1ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* -*- mode: c; c-basic-offset: 8; -*- 2ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * vim: noexpandtab sw=8 ts=8 sts=0: 3ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 4ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * suballoc.c 5ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 6ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * metadata alloc and free 7ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * Inspired by ext3 block groups. 8ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 9ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * Copyright (C) 2002, 2004 Oracle. All rights reserved. 10ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 11ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * This program is free software; you can redistribute it and/or 12ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * modify it under the terms of the GNU General Public 13ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * License as published by the Free Software Foundation; either 14ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * version 2 of the License, or (at your option) any later version. 15ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 16ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * This program is distributed in the hope that it will be useful, 17ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * but WITHOUT ANY WARRANTY; without even the implied warranty of 18ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * General Public License for more details. 20ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 21ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * You should have received a copy of the GNU General Public 22ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * License along with this program; if not, write to the 23ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 24ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * Boston, MA 021110-1307, USA. 25ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh */ 26ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 27ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include <linux/fs.h> 28ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include <linux/types.h> 29ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include <linux/slab.h> 30ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include <linux/highmem.h> 31ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 32ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include <cluster/masklog.h> 33ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 34ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "ocfs2.h" 35ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 36ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "alloc.h" 37d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker#include "blockcheck.h" 38ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "dlmglue.h" 39ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "inode.h" 40ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "journal.h" 41ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "localalloc.h" 42ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "suballoc.h" 43ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "super.h" 44ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "sysfile.h" 45ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "uptodate.h" 462f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma#include "ocfs2_trace.h" 47ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 48ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh#include "buffer_head_io.h" 49ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 50ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma#define NOT_ALLOC_NEW_GROUP 0 5160ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma#define ALLOC_NEW_GROUP 0x1 5260ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma#define ALLOC_GROUPS_FROM_GLOBAL 0x2 53ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma 54b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang#define OCFS2_MAX_TO_STEAL 1024 554d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma 567d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Beckerstruct ocfs2_suballoc_result { 572b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker u64 sr_bg_blkno; /* The bg we allocated from. Set 582b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker to 0 when a block group is 592b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker contiguous. */ 60e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh u64 sr_bg_stable_blkno; /* 61e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * Doesn't change, always 62e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * set to target block 63e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * group descriptor 64e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * block. 65e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh */ 66ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker u64 sr_blkno; /* The first allocated block */ 677d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker unsigned int sr_bit_offset; /* The bit in the bg */ 687d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker unsigned int sr_bits; /* How many bits we claimed */ 697d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker}; 707d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker 71b2b6ebf5f740e015b2155343958f067e594323eaMark Fashehstatic u64 ocfs2_group_from_res(struct ocfs2_suballoc_result *res) 72b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh{ 73b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh if (res->sr_blkno == 0) 74b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh return 0; 75b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh 76b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh if (res->sr_bg_blkno) 77b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh return res->sr_bg_blkno; 78b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh 79b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh return ocfs2_which_suballoc_group(res->sr_blkno, res->sr_bit_offset); 80b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh} 81b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh 82ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline void ocfs2_debug_bg(struct ocfs2_group_desc *bg); 83ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline void ocfs2_debug_suballoc_inode(struct ocfs2_dinode *fe); 84ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline u16 ocfs2_find_victim_chain(struct ocfs2_chain_list *cl); 851fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fashehstatic int ocfs2_block_group_fill(handle_t *handle, 86ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *alloc_inode, 87ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *bg_bh, 88ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 group_blkno, 89798db35f4649eac2778381c390ed7d12de9ec767Joel Becker unsigned int group_clusters, 90ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 my_chain, 91ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_chain_list *cl); 92ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_block_group_alloc(struct ocfs2_super *osb, 93ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *alloc_inode, 941187c968852e3c668f3b9376083851f81f6eee22Joel Becker struct buffer_head *bh, 9560ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma u64 max_block, 96feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma u64 *last_alloc_group, 9760ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma int flags); 98ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 99ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_cluster_group_search(struct inode *inode, 100ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *group_bh, 101ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted, u32 min_bits, 1021187c968852e3c668f3b9376083851f81f6eee22Joel Becker u64 max_block, 1037d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res); 104ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_block_group_search(struct inode *inode, 105ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *group_bh, 106ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted, u32 min_bits, 1071187c968852e3c668f3b9376083851f81f6eee22Joel Becker u64 max_block, 1087d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res); 109aa8f8e93c898a0319bcd6c79a9a42fe52abac7d7Joel Beckerstatic int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *ac, 1101fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fasheh handle_t *handle, 111ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted, 112ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 min_bits, 1137d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res); 114ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh, 115ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int nr); 1161fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fashehstatic int ocfs2_relink_block_group(handle_t *handle, 117ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *alloc_inode, 118ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *fe_bh, 119ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *bg_bh, 120ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *prev_bg_bh, 121ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 chain); 122ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline int ocfs2_block_group_reasonably_empty(struct ocfs2_group_desc *bg, 123ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 wanted); 124ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline u32 ocfs2_desc_bitmap_to_cluster_off(struct inode *inode, 125ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 bg_blkno, 126ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 bg_bit_off); 127ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline void ocfs2_block_to_cluster_group(struct inode *inode, 128ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 data_blkno, 129ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 *bg_blkno, 130ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 *bg_bit_off); 1311187c968852e3c668f3b9376083851f81f6eee22Joel Beckerstatic int ocfs2_reserve_clusters_with_limit(struct ocfs2_super *osb, 1321187c968852e3c668f3b9376083851f81f6eee22Joel Becker u32 bits_wanted, u64 max_block, 13360ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma int flags, 1341187c968852e3c668f3b9376083851f81f6eee22Joel Becker struct ocfs2_alloc_context **ac); 135ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1369c7af40b210e87f8fddd97b0badc0a352862234aMark Fashehvoid ocfs2_free_ac_resource(struct ocfs2_alloc_context *ac) 137ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 138da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh struct inode *inode = ac->ac_inode; 139da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh 140da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh if (inode) { 141da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh if (ac->ac_which != OCFS2_AC_USE_LOCAL) 142e63aecb651ba73dffc62f9608ee1b7ae2a0ffd4bMark Fasheh ocfs2_inode_unlock(inode, 1); 143da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh 144da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh mutex_unlock(&inode->i_mutex); 145da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh 146da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh iput(inode); 1474d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma ac->ac_inode = NULL; 148da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh } 149a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh brelse(ac->ac_bh); 150a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh ac->ac_bh = NULL; 151e3b4a97dbe9741a3227c3ed857a0632532fcd386Mark Fasheh ac->ac_resv = NULL; 152e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (ac->ac_find_loc_priv) { 153e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh kfree(ac->ac_find_loc_priv); 154e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ac->ac_find_loc_priv = NULL; 155e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh } 1564d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma} 1574d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma 1584d0ddb2ce25db2254d468233d942276ecf40bff8Tao Mavoid ocfs2_free_alloc_context(struct ocfs2_alloc_context *ac) 1594d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma{ 1604d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma ocfs2_free_ac_resource(ac); 161ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh kfree(ac); 162ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 163ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 164ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic u32 ocfs2_bits_per_group(struct ocfs2_chain_list *cl) 165ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 166ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return (u32)le16_to_cpu(cl->cl_cpg) * (u32)le16_to_cpu(cl->cl_bpc); 167ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 168ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 16957e3e7971136003c96766346049aa73b82cab079Joel Becker#define do_error(fmt, ...) \ 17057e3e7971136003c96766346049aa73b82cab079Joel Becker do{ \ 17178c37eb0d5e6a9727b12ea0f1821795ffaa66cfeTao Ma if (resize) \ 17257e3e7971136003c96766346049aa73b82cab079Joel Becker mlog(ML_ERROR, fmt "\n", ##__VA_ARGS__); \ 17357e3e7971136003c96766346049aa73b82cab079Joel Becker else \ 17457e3e7971136003c96766346049aa73b82cab079Joel Becker ocfs2_error(sb, fmt, ##__VA_ARGS__); \ 17557e3e7971136003c96766346049aa73b82cab079Joel Becker } while (0) 17657e3e7971136003c96766346049aa73b82cab079Joel Becker 177970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Beckerstatic int ocfs2_validate_gd_self(struct super_block *sb, 178970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker struct buffer_head *bh, 17978c37eb0d5e6a9727b12ea0f1821795ffaa66cfeTao Ma int resize) 180970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker{ 181970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; 182970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 1837bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh if (!OCFS2_IS_VALID_GROUP_DESC(gd)) { 18468f64d471be38631d7196b938d9809802dd467faJoel Becker do_error("Group descriptor #%llu has bad signature %.*s", 18568f64d471be38631d7196b938d9809802dd467faJoel Becker (unsigned long long)bh->b_blocknr, 7, 18657e3e7971136003c96766346049aa73b82cab079Joel Becker gd->bg_signature); 18757e3e7971136003c96766346049aa73b82cab079Joel Becker return -EINVAL; 1887bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh } 1897bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 19068f64d471be38631d7196b938d9809802dd467faJoel Becker if (le64_to_cpu(gd->bg_blkno) != bh->b_blocknr) { 19168f64d471be38631d7196b938d9809802dd467faJoel Becker do_error("Group descriptor #%llu has an invalid bg_blkno " 19268f64d471be38631d7196b938d9809802dd467faJoel Becker "of %llu", 19368f64d471be38631d7196b938d9809802dd467faJoel Becker (unsigned long long)bh->b_blocknr, 19468f64d471be38631d7196b938d9809802dd467faJoel Becker (unsigned long long)le64_to_cpu(gd->bg_blkno)); 19568f64d471be38631d7196b938d9809802dd467faJoel Becker return -EINVAL; 19668f64d471be38631d7196b938d9809802dd467faJoel Becker } 19768f64d471be38631d7196b938d9809802dd467faJoel Becker 19868f64d471be38631d7196b938d9809802dd467faJoel Becker if (le32_to_cpu(gd->bg_generation) != OCFS2_SB(sb)->fs_generation) { 19968f64d471be38631d7196b938d9809802dd467faJoel Becker do_error("Group descriptor #%llu has an invalid " 20068f64d471be38631d7196b938d9809802dd467faJoel Becker "fs_generation of #%u", 20168f64d471be38631d7196b938d9809802dd467faJoel Becker (unsigned long long)bh->b_blocknr, 20268f64d471be38631d7196b938d9809802dd467faJoel Becker le32_to_cpu(gd->bg_generation)); 20368f64d471be38631d7196b938d9809802dd467faJoel Becker return -EINVAL; 20468f64d471be38631d7196b938d9809802dd467faJoel Becker } 20568f64d471be38631d7196b938d9809802dd467faJoel Becker 206970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits)) { 207970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker do_error("Group descriptor #%llu has bit count %u but " 208970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker "claims that %u are free", 209970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker (unsigned long long)bh->b_blocknr, 210970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker le16_to_cpu(gd->bg_bits), 211970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker le16_to_cpu(gd->bg_free_bits_count)); 212970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker return -EINVAL; 213970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker } 214970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 215970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size))) { 216970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker do_error("Group descriptor #%llu has bit count %u but " 217970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker "max bitmap bits of %u", 218970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker (unsigned long long)bh->b_blocknr, 219970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker le16_to_cpu(gd->bg_bits), 220970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 8 * le16_to_cpu(gd->bg_size)); 221970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker return -EINVAL; 222970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker } 223970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 224970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker return 0; 225970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker} 226970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 227970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Beckerstatic int ocfs2_validate_gd_parent(struct super_block *sb, 228970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker struct ocfs2_dinode *di, 229970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker struct buffer_head *bh, 23078c37eb0d5e6a9727b12ea0f1821795ffaa66cfeTao Ma int resize) 231970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker{ 232970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker unsigned int max_bits; 233970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; 234970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 2357bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh if (di->i_blkno != gd->bg_parent_dinode) { 23668f64d471be38631d7196b938d9809802dd467faJoel Becker do_error("Group descriptor #%llu has bad parent " 23757e3e7971136003c96766346049aa73b82cab079Joel Becker "pointer (%llu, expected %llu)", 23868f64d471be38631d7196b938d9809802dd467faJoel Becker (unsigned long long)bh->b_blocknr, 23957e3e7971136003c96766346049aa73b82cab079Joel Becker (unsigned long long)le64_to_cpu(gd->bg_parent_dinode), 24057e3e7971136003c96766346049aa73b82cab079Joel Becker (unsigned long long)le64_to_cpu(di->i_blkno)); 24157e3e7971136003c96766346049aa73b82cab079Joel Becker return -EINVAL; 2427bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh } 2437bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 2447bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh max_bits = le16_to_cpu(di->id2.i_chain.cl_cpg) * le16_to_cpu(di->id2.i_chain.cl_bpc); 2457bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh if (le16_to_cpu(gd->bg_bits) > max_bits) { 24668f64d471be38631d7196b938d9809802dd467faJoel Becker do_error("Group descriptor #%llu has bit count of %u", 24768f64d471be38631d7196b938d9809802dd467faJoel Becker (unsigned long long)bh->b_blocknr, 24857e3e7971136003c96766346049aa73b82cab079Joel Becker le16_to_cpu(gd->bg_bits)); 24957e3e7971136003c96766346049aa73b82cab079Joel Becker return -EINVAL; 2507bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh } 2517bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 25278c37eb0d5e6a9727b12ea0f1821795ffaa66cfeTao Ma /* In resize, we may meet the case bg_chain == cl_next_free_rec. */ 25378c37eb0d5e6a9727b12ea0f1821795ffaa66cfeTao Ma if ((le16_to_cpu(gd->bg_chain) > 25478c37eb0d5e6a9727b12ea0f1821795ffaa66cfeTao Ma le16_to_cpu(di->id2.i_chain.cl_next_free_rec)) || 25578c37eb0d5e6a9727b12ea0f1821795ffaa66cfeTao Ma ((le16_to_cpu(gd->bg_chain) == 25678c37eb0d5e6a9727b12ea0f1821795ffaa66cfeTao Ma le16_to_cpu(di->id2.i_chain.cl_next_free_rec)) && !resize)) { 25768f64d471be38631d7196b938d9809802dd467faJoel Becker do_error("Group descriptor #%llu has bad chain %u", 25868f64d471be38631d7196b938d9809802dd467faJoel Becker (unsigned long long)bh->b_blocknr, 25957e3e7971136003c96766346049aa73b82cab079Joel Becker le16_to_cpu(gd->bg_chain)); 26057e3e7971136003c96766346049aa73b82cab079Joel Becker return -EINVAL; 2617bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh } 2627bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 263970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker return 0; 264970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker} 2657bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 26657e3e7971136003c96766346049aa73b82cab079Joel Becker#undef do_error 2677bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 268970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker/* 269970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker * This version only prints errors. It does not fail the filesystem, and 270970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker * exists only for resize. 271970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker */ 272970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Beckerint ocfs2_check_group_descriptor(struct super_block *sb, 273970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker struct ocfs2_dinode *di, 274970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker struct buffer_head *bh) 275970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker{ 276970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker int rc; 277d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; 278d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker 279d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker BUG_ON(!buffer_uptodate(bh)); 280970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 281d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker /* 282d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker * If the ecc fails, we return the error but otherwise 283d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker * leave the filesystem running. We know any error is 284d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker * local to this block. 285d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker */ 286d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &gd->bg_check); 28713723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker if (rc) { 28813723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker mlog(ML_ERROR, 28913723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker "Checksum failed for group descriptor %llu\n", 29013723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker (unsigned long long)bh->b_blocknr); 29113723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker } else 292d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker rc = ocfs2_validate_gd_self(sb, bh, 1); 293970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker if (!rc) 294970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker rc = ocfs2_validate_gd_parent(sb, di, bh, 1); 295970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 296970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker return rc; 297970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker} 298970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 299970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Beckerstatic int ocfs2_validate_group_descriptor(struct super_block *sb, 300970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker struct buffer_head *bh) 301970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker{ 302d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker int rc; 303d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *)bh->b_data; 304d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker 3052f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_validate_group_descriptor( 3062f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)bh->b_blocknr); 307970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker 308d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker BUG_ON(!buffer_uptodate(bh)); 309d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker 310d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker /* 311d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker * If the ecc fails, we return the error but otherwise 312d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker * leave the filesystem running. We know any error is 313d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker * local to this block. 314d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker */ 315d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &gd->bg_check); 316d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker if (rc) 317d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker return rc; 318d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker 319d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker /* 320d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker * Errors after here are fatal. 321d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker */ 322d6b32bbb3eae3fb787f1c33bf9f767ca1ddeb208Joel Becker 323970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker return ocfs2_validate_gd_self(sb, bh, 0); 3247bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh} 3257bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 32668f64d471be38631d7196b938d9809802dd467faJoel Beckerint ocfs2_read_group_descriptor(struct inode *inode, struct ocfs2_dinode *di, 32768f64d471be38631d7196b938d9809802dd467faJoel Becker u64 gd_blkno, struct buffer_head **bh) 32868f64d471be38631d7196b938d9809802dd467faJoel Becker{ 32968f64d471be38631d7196b938d9809802dd467faJoel Becker int rc; 33068f64d471be38631d7196b938d9809802dd467faJoel Becker struct buffer_head *tmp = *bh; 33168f64d471be38631d7196b938d9809802dd467faJoel Becker 3328cb471e8f82506937fe5e2e9fb0bf90f6b1f1170Joel Becker rc = ocfs2_read_block(INODE_CACHE(inode), gd_blkno, &tmp, 333970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker ocfs2_validate_group_descriptor); 33468f64d471be38631d7196b938d9809802dd467faJoel Becker if (rc) 33568f64d471be38631d7196b938d9809802dd467faJoel Becker goto out; 33668f64d471be38631d7196b938d9809802dd467faJoel Becker 337970e4936d7d15f35d00fd15a14f5343ba78b2fc8Joel Becker rc = ocfs2_validate_gd_parent(inode->i_sb, di, tmp, 0); 33868f64d471be38631d7196b938d9809802dd467faJoel Becker if (rc) { 33968f64d471be38631d7196b938d9809802dd467faJoel Becker brelse(tmp); 34068f64d471be38631d7196b938d9809802dd467faJoel Becker goto out; 34168f64d471be38631d7196b938d9809802dd467faJoel Becker } 34268f64d471be38631d7196b938d9809802dd467faJoel Becker 34368f64d471be38631d7196b938d9809802dd467faJoel Becker /* If ocfs2_read_block() got us a new bh, pass it up. */ 34468f64d471be38631d7196b938d9809802dd467faJoel Becker if (!*bh) 34568f64d471be38631d7196b938d9809802dd467faJoel Becker *bh = tmp; 34668f64d471be38631d7196b938d9809802dd467faJoel Becker 34768f64d471be38631d7196b938d9809802dd467faJoel Beckerout: 34868f64d471be38631d7196b938d9809802dd467faJoel Becker return rc; 34968f64d471be38631d7196b938d9809802dd467faJoel Becker} 35068f64d471be38631d7196b938d9809802dd467faJoel Becker 351798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerstatic void ocfs2_bg_discontig_add_extent(struct ocfs2_super *osb, 352798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_group_desc *bg, 353798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_chain_list *cl, 35447dea423799d98c53793237ab386a94976f305d5Tao Ma u64 p_blkno, unsigned int clusters) 355798db35f4649eac2778381c390ed7d12de9ec767Joel Becker{ 356798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_extent_list *el = &bg->bg_list; 357798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_extent_rec *rec; 358798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 3594711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma BUG_ON(!ocfs2_supports_discontig_bg(osb)); 360798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (!el->l_next_free_rec) 361798db35f4649eac2778381c390ed7d12de9ec767Joel Becker el->l_count = cpu_to_le16(ocfs2_extent_recs_per_gd(osb->sb)); 362798db35f4649eac2778381c390ed7d12de9ec767Joel Becker rec = &el->l_recs[le16_to_cpu(el->l_next_free_rec)]; 3634711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma rec->e_blkno = cpu_to_le64(p_blkno); 364798db35f4649eac2778381c390ed7d12de9ec767Joel Becker rec->e_cpos = cpu_to_le32(le16_to_cpu(bg->bg_bits) / 365798db35f4649eac2778381c390ed7d12de9ec767Joel Becker le16_to_cpu(cl->cl_bpc)); 36647dea423799d98c53793237ab386a94976f305d5Tao Ma rec->e_leaf_clusters = cpu_to_le16(clusters); 367798db35f4649eac2778381c390ed7d12de9ec767Joel Becker le16_add_cpu(&bg->bg_bits, clusters * le16_to_cpu(cl->cl_bpc)); 3684711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma le16_add_cpu(&bg->bg_free_bits_count, 3694711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma clusters * le16_to_cpu(cl->cl_bpc)); 370798db35f4649eac2778381c390ed7d12de9ec767Joel Becker le16_add_cpu(&el->l_next_free_rec, 1); 371798db35f4649eac2778381c390ed7d12de9ec767Joel Becker} 372798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 3731fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fashehstatic int ocfs2_block_group_fill(handle_t *handle, 374ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *alloc_inode, 375ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *bg_bh, 376ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 group_blkno, 377798db35f4649eac2778381c390ed7d12de9ec767Joel Becker unsigned int group_clusters, 378ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 my_chain, 379ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_chain_list *cl) 380ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 381ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status = 0; 382798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_super *osb = OCFS2_SB(alloc_inode->i_sb); 383ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; 384ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct super_block * sb = alloc_inode->i_sb; 385ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 386ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (((unsigned long long) bg_bh->b_blocknr) != group_blkno) { 387b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh ocfs2_error(alloc_inode->i_sb, "group block (%llu) != " 388b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh "b_blocknr (%llu)", 389b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh (unsigned long long)group_blkno, 390ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (unsigned long long) bg_bh->b_blocknr); 391ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -EIO; 392ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 393ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 394ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 39513723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker status = ocfs2_journal_access_gd(handle, 3960cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker INODE_CACHE(alloc_inode), 39713723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker bg_bh, 39813723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker OCFS2_JOURNAL_ACCESS_CREATE); 399ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 400ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 401ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 402ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 403ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 404ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh memset(bg, 0, sb->s_blocksize); 405ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh strcpy(bg->bg_signature, OCFS2_GROUP_DESC_SIGNATURE); 406ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg->bg_generation = cpu_to_le32(OCFS2_SB(sb)->fs_generation); 4078571882c21e5073b2f96147ec4ff9b7042339e1bTao Ma bg->bg_size = cpu_to_le16(ocfs2_group_bitmap_size(sb, 1, 4088571882c21e5073b2f96147ec4ff9b7042339e1bTao Ma osb->s_feature_incompat)); 409ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg->bg_chain = cpu_to_le16(my_chain); 410ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg->bg_next_group = cl->cl_recs[my_chain].c_blkno; 411ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg->bg_parent_dinode = cpu_to_le64(OCFS2_I(alloc_inode)->ip_blkno); 412ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg->bg_blkno = cpu_to_le64(group_blkno); 413798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (group_clusters == le16_to_cpu(cl->cl_cpg)) 414798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg->bg_bits = cpu_to_le16(ocfs2_bits_per_group(cl)); 415798db35f4649eac2778381c390ed7d12de9ec767Joel Becker else 4164711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma ocfs2_bg_discontig_add_extent(osb, bg, cl, group_blkno, 417798db35f4649eac2778381c390ed7d12de9ec767Joel Becker group_clusters); 418798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 419ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* set the 1st bit in the bitmap to account for the descriptor block */ 420ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_set_bit(0, (unsigned long *)bg->bg_bitmap); 421ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg->bg_free_bits_count = cpu_to_le16(le16_to_cpu(bg->bg_bits) - 1); 422ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 423ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, bg_bh); 424ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 425ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* There is no need to zero out or otherwise initialize the 426ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * other blocks in a group - All valid FS metadata in a block 427ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * group stores the superblock fs_generation value at 428ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * allocation time. */ 429ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 430ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 431c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 432c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 433ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 434ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 435ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 436ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline u16 ocfs2_find_smallest_chain(struct ocfs2_chain_list *cl) 437ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 438ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 curr, best; 439ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 440ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh best = curr = 0; 441ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh while (curr < le16_to_cpu(cl->cl_count)) { 442ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (le32_to_cpu(cl->cl_recs[best].c_total) > 443ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(cl->cl_recs[curr].c_total)) 444ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh best = curr; 445ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh curr++; 446ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 447ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return best; 448ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 449ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 450798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerstatic struct buffer_head * 451798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerocfs2_block_group_alloc_contig(struct ocfs2_super *osb, handle_t *handle, 452798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct inode *alloc_inode, 453798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_alloc_context *ac, 454798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_chain_list *cl) 455798db35f4649eac2778381c390ed7d12de9ec767Joel Becker{ 456798db35f4649eac2778381c390ed7d12de9ec767Joel Becker int status; 457798db35f4649eac2778381c390ed7d12de9ec767Joel Becker u32 bit_off, num_bits; 458798db35f4649eac2778381c390ed7d12de9ec767Joel Becker u64 bg_blkno; 459798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct buffer_head *bg_bh; 460798db35f4649eac2778381c390ed7d12de9ec767Joel Becker unsigned int alloc_rec = ocfs2_find_smallest_chain(cl); 461798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 4621ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Becker status = ocfs2_claim_clusters(handle, ac, 463798db35f4649eac2778381c390ed7d12de9ec767Joel Becker le16_to_cpu(cl->cl_cpg), &bit_off, 464798db35f4649eac2778381c390ed7d12de9ec767Joel Becker &num_bits); 465798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status < 0) { 466798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status != -ENOSPC) 467798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 468798db35f4649eac2778381c390ed7d12de9ec767Joel Becker goto bail; 469798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 470798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 471798db35f4649eac2778381c390ed7d12de9ec767Joel Becker /* setup the group */ 472798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_blkno = ocfs2_clusters_to_blocks(osb->sb, bit_off); 4732f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_block_group_alloc_contig( 4742f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)bg_blkno, alloc_rec); 475798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 476798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_bh = sb_getblk(osb->sb, bg_blkno); 477798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (!bg_bh) { 4787391a294b861bf2c3b762dfdcf61b9c5f1bffa1fRui Xiang status = -ENOMEM; 479798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 480798db35f4649eac2778381c390ed7d12de9ec767Joel Becker goto bail; 481798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 482798db35f4649eac2778381c390ed7d12de9ec767Joel Becker ocfs2_set_new_buffer_uptodate(INODE_CACHE(alloc_inode), bg_bh); 483798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 484798db35f4649eac2778381c390ed7d12de9ec767Joel Becker status = ocfs2_block_group_fill(handle, alloc_inode, bg_bh, 485798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_blkno, num_bits, alloc_rec, cl); 486798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status < 0) { 487798db35f4649eac2778381c390ed7d12de9ec767Joel Becker brelse(bg_bh); 488798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 489798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 490798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 491798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerbail: 492798db35f4649eac2778381c390ed7d12de9ec767Joel Becker return status ? ERR_PTR(status) : bg_bh; 493798db35f4649eac2778381c390ed7d12de9ec767Joel Becker} 494798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 495798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerstatic int ocfs2_block_group_claim_bits(struct ocfs2_super *osb, 496798db35f4649eac2778381c390ed7d12de9ec767Joel Becker handle_t *handle, 497798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_alloc_context *ac, 498798db35f4649eac2778381c390ed7d12de9ec767Joel Becker unsigned int min_bits, 499798db35f4649eac2778381c390ed7d12de9ec767Joel Becker u32 *bit_off, u32 *num_bits) 500798db35f4649eac2778381c390ed7d12de9ec767Joel Becker{ 50118d3a98f3c1b0e27ce026afa4d1ef042f2903726Joel Becker int status = 0; 502798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 503798db35f4649eac2778381c390ed7d12de9ec767Joel Becker while (min_bits) { 5041ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Becker status = ocfs2_claim_clusters(handle, ac, min_bits, 505798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bit_off, num_bits); 506798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status != -ENOSPC) 507798db35f4649eac2778381c390ed7d12de9ec767Joel Becker break; 508798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 509798db35f4649eac2778381c390ed7d12de9ec767Joel Becker min_bits >>= 1; 510798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 511798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 512798db35f4649eac2778381c390ed7d12de9ec767Joel Becker return status; 513798db35f4649eac2778381c390ed7d12de9ec767Joel Becker} 514798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 515798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerstatic int ocfs2_block_group_grow_discontig(handle_t *handle, 516798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct inode *alloc_inode, 517798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct buffer_head *bg_bh, 518798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_alloc_context *ac, 519798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_chain_list *cl, 520798db35f4649eac2778381c390ed7d12de9ec767Joel Becker unsigned int min_bits) 521798db35f4649eac2778381c390ed7d12de9ec767Joel Becker{ 522798db35f4649eac2778381c390ed7d12de9ec767Joel Becker int status; 523798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_super *osb = OCFS2_SB(alloc_inode->i_sb); 524798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_group_desc *bg = 525798db35f4649eac2778381c390ed7d12de9ec767Joel Becker (struct ocfs2_group_desc *)bg_bh->b_data; 5264711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma unsigned int needed = le16_to_cpu(cl->cl_cpg) - 5274711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma le16_to_cpu(bg->bg_bits) / le16_to_cpu(cl->cl_bpc); 528798db35f4649eac2778381c390ed7d12de9ec767Joel Becker u32 p_cpos, clusters; 529798db35f4649eac2778381c390ed7d12de9ec767Joel Becker u64 p_blkno; 530798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_extent_list *el = &bg->bg_list; 531798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 532798db35f4649eac2778381c390ed7d12de9ec767Joel Becker status = ocfs2_journal_access_gd(handle, 533798db35f4649eac2778381c390ed7d12de9ec767Joel Becker INODE_CACHE(alloc_inode), 534798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_bh, 535798db35f4649eac2778381c390ed7d12de9ec767Joel Becker OCFS2_JOURNAL_ACCESS_CREATE); 536798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status < 0) { 537798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 538798db35f4649eac2778381c390ed7d12de9ec767Joel Becker goto bail; 539798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 540798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 541798db35f4649eac2778381c390ed7d12de9ec767Joel Becker while ((needed > 0) && (le16_to_cpu(el->l_next_free_rec) < 542798db35f4649eac2778381c390ed7d12de9ec767Joel Becker le16_to_cpu(el->l_count))) { 543798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (min_bits > needed) 544798db35f4649eac2778381c390ed7d12de9ec767Joel Becker min_bits = needed; 545798db35f4649eac2778381c390ed7d12de9ec767Joel Becker status = ocfs2_block_group_claim_bits(osb, handle, ac, 546798db35f4649eac2778381c390ed7d12de9ec767Joel Becker min_bits, &p_cpos, 547798db35f4649eac2778381c390ed7d12de9ec767Joel Becker &clusters); 548798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status < 0) { 549798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status != -ENOSPC) 550798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 551798db35f4649eac2778381c390ed7d12de9ec767Joel Becker goto bail; 552798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 553798db35f4649eac2778381c390ed7d12de9ec767Joel Becker p_blkno = ocfs2_clusters_to_blocks(osb->sb, p_cpos); 554798db35f4649eac2778381c390ed7d12de9ec767Joel Becker ocfs2_bg_discontig_add_extent(osb, bg, cl, p_blkno, 555798db35f4649eac2778381c390ed7d12de9ec767Joel Becker clusters); 556798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 557798db35f4649eac2778381c390ed7d12de9ec767Joel Becker min_bits = clusters; 5584711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma needed = le16_to_cpu(cl->cl_cpg) - 5594711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma le16_to_cpu(bg->bg_bits) / le16_to_cpu(cl->cl_bpc); 560798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 561798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 562798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (needed > 0) { 5634711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma /* 5644711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma * We have used up all the extent rec but can't fill up 5654711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma * the cpg. So bail out. 5664711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma */ 5674711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma status = -ENOSPC; 5684711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma goto bail; 569798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 570798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 571798db35f4649eac2778381c390ed7d12de9ec767Joel Becker ocfs2_journal_dirty(handle, bg_bh); 572798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 573798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerbail: 574798db35f4649eac2778381c390ed7d12de9ec767Joel Becker return status; 575798db35f4649eac2778381c390ed7d12de9ec767Joel Becker} 576798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 5778b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Beckerstatic void ocfs2_bg_alloc_cleanup(handle_t *handle, 5788b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker struct ocfs2_alloc_context *cluster_ac, 5798b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker struct inode *alloc_inode, 5808b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker struct buffer_head *bg_bh) 581798db35f4649eac2778381c390ed7d12de9ec767Joel Becker{ 5828b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker int i, ret; 583798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_group_desc *bg; 584798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_extent_list *el; 585798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_extent_rec *rec; 586798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 587798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (!bg_bh) 588798db35f4649eac2778381c390ed7d12de9ec767Joel Becker return; 589798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 590798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg = (struct ocfs2_group_desc *)bg_bh->b_data; 591798db35f4649eac2778381c390ed7d12de9ec767Joel Becker el = &bg->bg_list; 592798db35f4649eac2778381c390ed7d12de9ec767Joel Becker for (i = 0; i < le16_to_cpu(el->l_next_free_rec); i++) { 593798db35f4649eac2778381c390ed7d12de9ec767Joel Becker rec = &el->l_recs[i]; 5948b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker ret = ocfs2_free_clusters(handle, cluster_ac->ac_inode, 5958b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker cluster_ac->ac_bh, 5968b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker le64_to_cpu(rec->e_blkno), 59772094e43e3af5020510f920321d71f1798fa896dAl Viro le16_to_cpu(rec->e_leaf_clusters)); 5988b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker if (ret) 5998b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker mlog_errno(ret); 6008b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker /* Try all the clusters to free */ 601798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 602798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 603798db35f4649eac2778381c390ed7d12de9ec767Joel Becker ocfs2_remove_from_cache(INODE_CACHE(alloc_inode), bg_bh); 604798db35f4649eac2778381c390ed7d12de9ec767Joel Becker brelse(bg_bh); 605798db35f4649eac2778381c390ed7d12de9ec767Joel Becker} 606798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 607798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerstatic struct buffer_head * 608798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerocfs2_block_group_alloc_discontig(handle_t *handle, 609798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct inode *alloc_inode, 610798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_alloc_context *ac, 6118b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker struct ocfs2_chain_list *cl) 612798db35f4649eac2778381c390ed7d12de9ec767Joel Becker{ 613798db35f4649eac2778381c390ed7d12de9ec767Joel Becker int status; 614798db35f4649eac2778381c390ed7d12de9ec767Joel Becker u32 bit_off, num_bits; 615798db35f4649eac2778381c390ed7d12de9ec767Joel Becker u64 bg_blkno; 616798db35f4649eac2778381c390ed7d12de9ec767Joel Becker unsigned int min_bits = le16_to_cpu(cl->cl_cpg) >> 1; 617798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct buffer_head *bg_bh = NULL; 618798db35f4649eac2778381c390ed7d12de9ec767Joel Becker unsigned int alloc_rec = ocfs2_find_smallest_chain(cl); 619798db35f4649eac2778381c390ed7d12de9ec767Joel Becker struct ocfs2_super *osb = OCFS2_SB(alloc_inode->i_sb); 620798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 6214711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma if (!ocfs2_supports_discontig_bg(osb)) { 622798db35f4649eac2778381c390ed7d12de9ec767Joel Becker status = -ENOSPC; 623798db35f4649eac2778381c390ed7d12de9ec767Joel Becker goto bail; 624798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 625798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 6268b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker status = ocfs2_extend_trans(handle, 6278b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker ocfs2_calc_bg_discontig_credits(osb->sb)); 6288b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker if (status) { 6298b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker mlog_errno(status); 6308b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker goto bail; 6318b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker } 6328b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker 63395ec0adf0b56d6a3f0ca1ec87173311898486b2eJoel Becker /* 63495ec0adf0b56d6a3f0ca1ec87173311898486b2eJoel Becker * We're going to be grabbing from multiple cluster groups. 63595ec0adf0b56d6a3f0ca1ec87173311898486b2eJoel Becker * We don't have enough credits to relink them all, and the 63695ec0adf0b56d6a3f0ca1ec87173311898486b2eJoel Becker * cluster groups will be staying in cache for the duration of 63795ec0adf0b56d6a3f0ca1ec87173311898486b2eJoel Becker * this operation. 63895ec0adf0b56d6a3f0ca1ec87173311898486b2eJoel Becker */ 639309a85b6861fedbb48a22d45e0e079d1be993b3aXiaowei.Hu ac->ac_disable_chain_relink = 1; 64095ec0adf0b56d6a3f0ca1ec87173311898486b2eJoel Becker 641798db35f4649eac2778381c390ed7d12de9ec767Joel Becker /* Claim the first region */ 642798db35f4649eac2778381c390ed7d12de9ec767Joel Becker status = ocfs2_block_group_claim_bits(osb, handle, ac, min_bits, 643798db35f4649eac2778381c390ed7d12de9ec767Joel Becker &bit_off, &num_bits); 644798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status < 0) { 645798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status != -ENOSPC) 646798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 647798db35f4649eac2778381c390ed7d12de9ec767Joel Becker goto bail; 648798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 649798db35f4649eac2778381c390ed7d12de9ec767Joel Becker min_bits = num_bits; 650798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 651798db35f4649eac2778381c390ed7d12de9ec767Joel Becker /* setup the group */ 652798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_blkno = ocfs2_clusters_to_blocks(osb->sb, bit_off); 6532f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_block_group_alloc_discontig( 6542f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)bg_blkno, alloc_rec); 655798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 656798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_bh = sb_getblk(osb->sb, bg_blkno); 657798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (!bg_bh) { 6587391a294b861bf2c3b762dfdcf61b9c5f1bffa1fRui Xiang status = -ENOMEM; 659798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 660798db35f4649eac2778381c390ed7d12de9ec767Joel Becker goto bail; 661798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 662798db35f4649eac2778381c390ed7d12de9ec767Joel Becker ocfs2_set_new_buffer_uptodate(INODE_CACHE(alloc_inode), bg_bh); 663798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 664798db35f4649eac2778381c390ed7d12de9ec767Joel Becker status = ocfs2_block_group_fill(handle, alloc_inode, bg_bh, 665798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_blkno, num_bits, alloc_rec, cl); 666798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status < 0) { 667798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 668798db35f4649eac2778381c390ed7d12de9ec767Joel Becker goto bail; 669798db35f4649eac2778381c390ed7d12de9ec767Joel Becker } 670798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 671798db35f4649eac2778381c390ed7d12de9ec767Joel Becker status = ocfs2_block_group_grow_discontig(handle, alloc_inode, 672798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_bh, ac, cl, min_bits); 673798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status) 674798db35f4649eac2778381c390ed7d12de9ec767Joel Becker mlog_errno(status); 675798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 676798db35f4649eac2778381c390ed7d12de9ec767Joel Beckerbail: 677798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (status) 6788b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker ocfs2_bg_alloc_cleanup(handle, ac, alloc_inode, bg_bh); 679798db35f4649eac2778381c390ed7d12de9ec767Joel Becker return status ? ERR_PTR(status) : bg_bh; 680798db35f4649eac2778381c390ed7d12de9ec767Joel Becker} 681798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 682ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* 683ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * We expect the block group allocator to already be locked. 684ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh */ 685ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_block_group_alloc(struct ocfs2_super *osb, 686ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *alloc_inode, 6871187c968852e3c668f3b9376083851f81f6eee22Joel Becker struct buffer_head *bh, 68860ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma u64 max_block, 689feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma u64 *last_alloc_group, 69060ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma int flags) 691ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 692ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status, credits; 693ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; 694ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_chain_list *cl; 695ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_alloc_context *ac = NULL; 6961fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fasheh handle_t *handle = NULL; 6974711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma u16 alloc_rec; 698ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *bg_bh = NULL; 699ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *bg; 700ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 701ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ocfs2_is_cluster_bitmap(alloc_inode)); 702ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 703ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh cl = &fe->id2.i_chain; 7041187c968852e3c668f3b9376083851f81f6eee22Joel Becker status = ocfs2_reserve_clusters_with_limit(osb, 7051187c968852e3c668f3b9376083851f81f6eee22Joel Becker le16_to_cpu(cl->cl_cpg), 70660ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma max_block, flags, &ac); 707ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 708ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status != -ENOSPC) 709ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 710ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 711ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 712ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 713ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh credits = ocfs2_calc_group_alloc_credits(osb->sb, 714ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le16_to_cpu(cl->cl_cpg)); 71565eff9ccf86d63eb5c3e9071450a36e4e4fa9564Mark Fasheh handle = ocfs2_start_trans(osb, credits); 716ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (IS_ERR(handle)) { 717ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = PTR_ERR(handle); 718ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh handle = NULL; 719ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 720ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 721ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 722ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 723feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma if (last_alloc_group && *last_alloc_group != 0) { 7242f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_block_group_alloc( 7252f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)*last_alloc_group); 726feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma ac->ac_last_group = *last_alloc_group; 727feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma } 728798db35f4649eac2778381c390ed7d12de9ec767Joel Becker 729798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_bh = ocfs2_block_group_alloc_contig(osb, handle, alloc_inode, 730798db35f4649eac2778381c390ed7d12de9ec767Joel Becker ac, cl); 731798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (IS_ERR(bg_bh) && (PTR_ERR(bg_bh) == -ENOSPC)) 732798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_bh = ocfs2_block_group_alloc_discontig(handle, 733798db35f4649eac2778381c390ed7d12de9ec767Joel Becker alloc_inode, 7348b06bc592ebc5a31e8d0b9c2ab17c6e78dde1f86Joel Becker ac, cl); 735798db35f4649eac2778381c390ed7d12de9ec767Joel Becker if (IS_ERR(bg_bh)) { 736798db35f4649eac2778381c390ed7d12de9ec767Joel Becker status = PTR_ERR(bg_bh); 737798db35f4649eac2778381c390ed7d12de9ec767Joel Becker bg_bh = NULL; 738ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status != -ENOSPC) 739ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 740ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 741ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 742ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg = (struct ocfs2_group_desc *) bg_bh->b_data; 743ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 7440cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker status = ocfs2_journal_access_di(handle, INODE_CACHE(alloc_inode), 74513723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker bh, OCFS2_JOURNAL_ACCESS_WRITE); 746ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 747ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 748ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 749ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 750ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 7514711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma alloc_rec = le16_to_cpu(bg->bg_chain); 7524711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma le32_add_cpu(&cl->cl_recs[alloc_rec].c_free, 753ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le16_to_cpu(bg->bg_free_bits_count)); 7544711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma le32_add_cpu(&cl->cl_recs[alloc_rec].c_total, 755798db35f4649eac2778381c390ed7d12de9ec767Joel Becker le16_to_cpu(bg->bg_bits)); 7560a463b74e7e6856b24e613de2b85237c6e11890bTao Ma cl->cl_recs[alloc_rec].c_blkno = bg->bg_blkno; 757ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (le16_to_cpu(cl->cl_next_free_rec) < le16_to_cpu(cl->cl_count)) 758ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le16_add_cpu(&cl->cl_next_free_rec, 1); 759ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 760ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_add_cpu(&fe->id1.bitmap1.i_used, le16_to_cpu(bg->bg_bits) - 761ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le16_to_cpu(bg->bg_free_bits_count)); 762ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_add_cpu(&fe->id1.bitmap1.i_total, le16_to_cpu(bg->bg_bits)); 763ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_add_cpu(&fe->i_clusters, le16_to_cpu(cl->cl_cpg)); 764ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 765ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, bh); 766ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 767ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh spin_lock(&OCFS2_I(alloc_inode)->ip_lock); 768ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh OCFS2_I(alloc_inode)->ip_clusters = le32_to_cpu(fe->i_clusters); 769ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe->i_size = cpu_to_le64(ocfs2_clusters_to_bytes(alloc_inode->i_sb, 770ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(fe->i_clusters))); 771ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh spin_unlock(&OCFS2_I(alloc_inode)->ip_lock); 772ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh i_size_write(alloc_inode, le64_to_cpu(fe->i_size)); 7738110b073a9135acf0a71bccfc20c0d1023f179c6Mark Fasheh alloc_inode->i_blocks = ocfs2_inode_sector_count(alloc_inode); 7746fdb702d6262b18b1b41a35f1f81903b0a2bc2c9Darrick J. Wong ocfs2_update_inode_fsync_trans(handle, alloc_inode, 0); 775ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 776ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = 0; 777feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma 778feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma /* save the new last alloc group so that the caller can cache it. */ 779feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma if (last_alloc_group) 780feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma *last_alloc_group = ac->ac_last_group; 781feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma 782ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 783ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (handle) 78402dc1af44e9fa4b8801169891b3a1ba4047537adMark Fasheh ocfs2_commit_trans(osb, handle); 785ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 786ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (ac) 787ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_free_alloc_context(ac); 788ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 789a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh brelse(bg_bh); 790ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 791c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 792c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 793ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 794ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 795ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 796ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb, 797da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh struct ocfs2_alloc_context *ac, 798da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh int type, 799ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma u32 slot, 800feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma u64 *last_alloc_group, 80160ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma int flags) 802ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 803ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 804ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted = ac->ac_bits_wanted; 805da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh struct inode *alloc_inode; 806ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *bh = NULL; 807ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_dinode *fe; 808ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 free_bits; 809ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 810da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh alloc_inode = ocfs2_get_system_file_inode(osb, type, slot); 811da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh if (!alloc_inode) { 812da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh mlog_errno(-EINVAL); 813da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh return -EINVAL; 814da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh } 815ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 816da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh mutex_lock(&alloc_inode->i_mutex); 817da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh 818e63aecb651ba73dffc62f9608ee1b7ae2a0ffd4bMark Fasheh status = ocfs2_inode_lock(alloc_inode, &bh, 1); 819ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 820da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh mutex_unlock(&alloc_inode->i_mutex); 821da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh iput(alloc_inode); 822da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh 823ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 824da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh return status; 825ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 826ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 827da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh ac->ac_inode = alloc_inode; 828a4a4891164d4f6f383cc17e7c90828a7ca6a1146Tao Ma ac->ac_alloc_slot = slot; 829da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh 830ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe = (struct ocfs2_dinode *) bh->b_data; 83110995aa2451afa20b721cc7de856cae1a13dba57Joel Becker 83210995aa2451afa20b721cc7de856cae1a13dba57Joel Becker /* The bh was validated by the inode read inside 83310995aa2451afa20b721cc7de856cae1a13dba57Joel Becker * ocfs2_inode_lock(). Any corruption is a code bug. */ 83410995aa2451afa20b721cc7de856cae1a13dba57Joel Becker BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); 83510995aa2451afa20b721cc7de856cae1a13dba57Joel Becker 836ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!(fe->i_flags & cpu_to_le32(OCFS2_CHAIN_FL))) { 837b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh ocfs2_error(alloc_inode->i_sb, "Invalid chain allocator %llu", 838b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh (unsigned long long)le64_to_cpu(fe->i_blkno)); 839ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -EIO; 840ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 841ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 842ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 843ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh free_bits = le32_to_cpu(fe->id1.bitmap1.i_total) - 844ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(fe->id1.bitmap1.i_used); 845ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 846ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (bits_wanted > free_bits) { 847ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* cluster bitmap never grows */ 848ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (ocfs2_is_cluster_bitmap(alloc_inode)) { 8492f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_reserve_suballoc_bits_nospc(bits_wanted, 8502f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma free_bits); 851ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -ENOSPC; 852ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 853ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 854ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 85560ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma if (!(flags & ALLOC_NEW_GROUP)) { 8562f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_reserve_suballoc_bits_no_new_group( 8572f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma slot, bits_wanted, free_bits); 858ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma status = -ENOSPC; 859ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma goto bail; 860ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma } 861ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma 8621187c968852e3c668f3b9376083851f81f6eee22Joel Becker status = ocfs2_block_group_alloc(osb, alloc_inode, bh, 863feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma ac->ac_max_block, 864feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma last_alloc_group, flags); 865ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 866ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status != -ENOSPC) 867ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 868ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 869ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 870ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh atomic_inc(&osb->alloc_stats.bg_extends); 871ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 872ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* You should never ask for this much metadata */ 873ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(bits_wanted > 874ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (le32_to_cpu(fe->id1.bitmap1.i_total) 875ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh - le32_to_cpu(fe->id1.bitmap1.i_used))); 876ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 877ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 878ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh get_bh(bh); 879ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ac->ac_bh = bh; 880ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 881a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh brelse(bh); 882ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 883c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 884c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 885ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 886ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 887ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 888b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic void ocfs2_init_inode_steal_slot(struct ocfs2_super *osb) 889b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 890b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang spin_lock(&osb->osb_lock); 891b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang osb->s_inode_steal_slot = OCFS2_INVALID_SLOT; 892b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang spin_unlock(&osb->osb_lock); 893b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang atomic_set(&osb->s_num_inodes_stolen, 0); 894b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 895b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 896b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic void ocfs2_init_meta_steal_slot(struct ocfs2_super *osb) 897b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 898b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang spin_lock(&osb->osb_lock); 899b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang osb->s_meta_steal_slot = OCFS2_INVALID_SLOT; 900b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang spin_unlock(&osb->osb_lock); 901b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang atomic_set(&osb->s_num_meta_stolen, 0); 902b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 903b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 904b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangvoid ocfs2_init_steal_slots(struct ocfs2_super *osb) 905b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 906b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang ocfs2_init_inode_steal_slot(osb); 907b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang ocfs2_init_meta_steal_slot(osb); 908b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 909b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 910b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic void __ocfs2_set_steal_slot(struct ocfs2_super *osb, int slot, int type) 911b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 912b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang spin_lock(&osb->osb_lock); 913b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (type == INODE_ALLOC_SYSTEM_INODE) 914b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang osb->s_inode_steal_slot = slot; 915b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang else if (type == EXTENT_ALLOC_SYSTEM_INODE) 916b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang osb->s_meta_steal_slot = slot; 917b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang spin_unlock(&osb->osb_lock); 918b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 919b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 920b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic int __ocfs2_get_steal_slot(struct ocfs2_super *osb, int type) 921b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 922b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang int slot = OCFS2_INVALID_SLOT; 923b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 924b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang spin_lock(&osb->osb_lock); 925b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (type == INODE_ALLOC_SYSTEM_INODE) 926b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang slot = osb->s_inode_steal_slot; 927b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang else if (type == EXTENT_ALLOC_SYSTEM_INODE) 928b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang slot = osb->s_meta_steal_slot; 929b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang spin_unlock(&osb->osb_lock); 930b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 931b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang return slot; 932b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 933b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 934b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic int ocfs2_get_inode_steal_slot(struct ocfs2_super *osb) 935b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 936b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang return __ocfs2_get_steal_slot(osb, INODE_ALLOC_SYSTEM_INODE); 937b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 938b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 939b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic int ocfs2_get_meta_steal_slot(struct ocfs2_super *osb) 940b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 941b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang return __ocfs2_get_steal_slot(osb, EXTENT_ALLOC_SYSTEM_INODE); 942b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 943b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 944b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic int ocfs2_steal_resource(struct ocfs2_super *osb, 945b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang struct ocfs2_alloc_context *ac, 946b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang int type) 947b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 948b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang int i, status = -ENOSPC; 949b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang int slot = __ocfs2_get_steal_slot(osb, type); 950b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 951b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang /* Start to steal resource from the first slot after ours. */ 952b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (slot == OCFS2_INVALID_SLOT) 953b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang slot = osb->slot_num + 1; 954b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 955b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang for (i = 0; i < osb->max_slots; i++, slot++) { 956b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (slot == osb->max_slots) 957b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang slot = 0; 958b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 959b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (slot == osb->slot_num) 960b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang continue; 961b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 962b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang status = ocfs2_reserve_suballoc_bits(osb, ac, 963b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang type, 964b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang (u32)slot, NULL, 965b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang NOT_ALLOC_NEW_GROUP); 966b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (status >= 0) { 967b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang __ocfs2_set_steal_slot(osb, slot, type); 968b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang break; 969b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang } 970b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 971b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang ocfs2_free_ac_resource(ac); 972b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang } 973b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 974b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang return status; 975b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 976b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 977b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic int ocfs2_steal_inode(struct ocfs2_super *osb, 978b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang struct ocfs2_alloc_context *ac) 979b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 980b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang return ocfs2_steal_resource(osb, ac, INODE_ALLOC_SYSTEM_INODE); 981b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 982b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 983b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangstatic int ocfs2_steal_meta(struct ocfs2_super *osb, 984b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang struct ocfs2_alloc_context *ac) 985b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang{ 986b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang return ocfs2_steal_resource(osb, ac, EXTENT_ALLOC_SYSTEM_INODE); 987b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang} 988b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 989cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yangint ocfs2_reserve_new_metadata_blocks(struct ocfs2_super *osb, 990cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang int blocks, 991cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang struct ocfs2_alloc_context **ac) 992ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 993ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 994b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang int slot = ocfs2_get_meta_steal_slot(osb); 995ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 996cd86128088554d64fea1679191509f00e6353c5bRobert P. J. Day *ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL); 997ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!(*ac)) { 998ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -ENOMEM; 999ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1000ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1001ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1002ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1003cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang (*ac)->ac_bits_wanted = blocks; 1004ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (*ac)->ac_which = OCFS2_AC_USE_META; 1005ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (*ac)->ac_group_search = ocfs2_block_group_search; 1006ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1007b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (slot != OCFS2_INVALID_SLOT && 1008b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang atomic_read(&osb->s_num_meta_stolen) < OCFS2_MAX_TO_STEAL) 1009b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang goto extent_steal; 1010b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 1011b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang atomic_set(&osb->s_num_meta_stolen, 0); 1012da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh status = ocfs2_reserve_suballoc_bits(osb, (*ac), 1013ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma EXTENT_ALLOC_SYSTEM_INODE, 1014b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang (u32)osb->slot_num, NULL, 101533d5d380d667ad264675cfdb297dfc3c5b6542ccMark Fasheh ALLOC_GROUPS_FROM_GLOBAL|ALLOC_NEW_GROUP); 1016b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 1017b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 1018b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (status >= 0) { 1019b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang status = 0; 1020b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang if (slot != OCFS2_INVALID_SLOT) 1021b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang ocfs2_init_meta_steal_slot(osb); 1022b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang goto bail; 1023b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang } else if (status < 0 && status != -ENOSPC) { 1024b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang mlog_errno(status); 1025b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang goto bail; 1026b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang } 1027b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 1028b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang ocfs2_free_ac_resource(*ac); 1029b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang 1030b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yangextent_steal: 1031b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang status = ocfs2_steal_meta(osb, *ac); 1032b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang atomic_inc(&osb->s_num_meta_stolen); 1033ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1034ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status != -ENOSPC) 1035ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1036ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1037ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1038ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1039ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = 0; 1040ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 1041ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if ((status < 0) && *ac) { 1042ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_free_alloc_context(*ac); 1043ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh *ac = NULL; 1044ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1045ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1046c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 1047c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 1048ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 1049ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1050ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1051cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yangint ocfs2_reserve_new_metadata(struct ocfs2_super *osb, 1052cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang struct ocfs2_extent_list *root_el, 1053cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang struct ocfs2_alloc_context **ac) 1054cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang{ 1055cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang return ocfs2_reserve_new_metadata_blocks(osb, 1056cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang ocfs2_extend_meta_needed(root_el), 1057cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang ac); 1058cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang} 1059cf1d6c763fbcb115263114302485ad17e7933d87Tiger Yang 1060ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehint ocfs2_reserve_new_inode(struct ocfs2_super *osb, 1061ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_alloc_context **ac) 1062ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1063ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 1064b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang int slot = ocfs2_get_inode_steal_slot(osb); 1065feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma u64 alloc_group; 1066ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1067cd86128088554d64fea1679191509f00e6353c5bRobert P. J. Day *ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL); 1068ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!(*ac)) { 1069ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -ENOMEM; 1070ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1071ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1072ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1073ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1074ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (*ac)->ac_bits_wanted = 1; 1075ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (*ac)->ac_which = OCFS2_AC_USE_INODE; 1076ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1077ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (*ac)->ac_group_search = ocfs2_block_group_search; 1078ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 10794d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma /* 10801187c968852e3c668f3b9376083851f81f6eee22Joel Becker * stat(2) can't handle i_ino > 32bits, so we tell the 10811187c968852e3c668f3b9376083851f81f6eee22Joel Becker * lower levels not to allocate us a block group past that 108212462f1d9f0b96389497438dc2730c6f7410be82Joel Becker * limit. The 'inode64' mount option avoids this behavior. 10831187c968852e3c668f3b9376083851f81f6eee22Joel Becker */ 108412462f1d9f0b96389497438dc2730c6f7410be82Joel Becker if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64)) 108512462f1d9f0b96389497438dc2730c6f7410be82Joel Becker (*ac)->ac_max_block = (u32)~0U; 10861187c968852e3c668f3b9376083851f81f6eee22Joel Becker 10871187c968852e3c668f3b9376083851f81f6eee22Joel Becker /* 10884d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * slot is set when we successfully steal inode from other nodes. 10894d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * It is reset in 3 places: 10904d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * 1. when we flush the truncate log 10914d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * 2. when we complete local alloc recovery. 10924d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * 3. when we successfully allocate from our own slot. 10934d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * After it is set, we will go on stealing inodes until we find the 10944d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * need to check our slots to see whether there is some space for us. 10954d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma */ 10964d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma if (slot != OCFS2_INVALID_SLOT && 1097b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang atomic_read(&osb->s_num_inodes_stolen) < OCFS2_MAX_TO_STEAL) 10984d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma goto inode_steal; 10994d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma 11004d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma atomic_set(&osb->s_num_inodes_stolen, 0); 1101feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma alloc_group = osb->osb_inode_alloc_group; 1102da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh status = ocfs2_reserve_suballoc_bits(osb, *ac, 1103da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh INODE_ALLOC_SYSTEM_INODE, 1104b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang (u32)osb->slot_num, 1105feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma &alloc_group, 110660ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma ALLOC_NEW_GROUP | 110760ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma ALLOC_GROUPS_FROM_GLOBAL); 11084d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma if (status >= 0) { 11094d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma status = 0; 11104d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma 1111feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma spin_lock(&osb->osb_lock); 1112feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma osb->osb_inode_alloc_group = alloc_group; 1113feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma spin_unlock(&osb->osb_lock); 11142f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_reserve_new_inode_new_group( 11152f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)alloc_group); 1116feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma 11174d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma /* 11184d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * Some inodes must be freed by us, so try to allocate 11194d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma * from our own next time. 11204d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma */ 11214d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma if (slot != OCFS2_INVALID_SLOT) 11224d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma ocfs2_init_inode_steal_slot(osb); 11234d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma goto bail; 11244d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma } else if (status < 0 && status != -ENOSPC) { 11254d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma mlog_errno(status); 11264d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma goto bail; 11274d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma } 11284d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma 11294d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma ocfs2_free_ac_resource(*ac); 11304d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma 11314d0ddb2ce25db2254d468233d942276ecf40bff8Tao Mainode_steal: 1132b89c54282db0c8634a2d2dc200f196d571750ce5Tiger Yang status = ocfs2_steal_inode(osb, *ac); 11334d0ddb2ce25db2254d468233d942276ecf40bff8Tao Ma atomic_inc(&osb->s_num_inodes_stolen); 1134ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1135ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status != -ENOSPC) 1136ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1137ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1138ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1139ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1140ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = 0; 1141ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 1142ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if ((status < 0) && *ac) { 1143ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_free_alloc_context(*ac); 1144ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh *ac = NULL; 1145ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1146ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1147c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 1148c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 1149ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 1150ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1151ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1152ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* local alloc code has to do the same thing, so rather than do this 1153ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * twice.. */ 1154ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehint ocfs2_reserve_cluster_bitmap_bits(struct ocfs2_super *osb, 1155ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_alloc_context *ac) 1156ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1157ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 1158ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1159ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ac->ac_which = OCFS2_AC_USE_MAIN; 1160ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ac->ac_group_search = ocfs2_cluster_group_search; 1161ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1162da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh status = ocfs2_reserve_suballoc_bits(osb, ac, 1163da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh GLOBAL_BITMAP_SYSTEM_INODE, 1164feb473a6e8bd19297d0f3bb377b25055c0228c0aTao Ma OCFS2_INVALID_SLOT, NULL, 1165ffda89a3bf3b968bdc268584c6bc1da5c173cf12Tao Ma ALLOC_NEW_GROUP); 1166da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh if (status < 0 && status != -ENOSPC) { 1167ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1168da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh goto bail; 1169da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh } 1170da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh 1171ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 1172ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 1173ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1174ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1175ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* Callers don't need to care which bitmap (local alloc or main) to 1176ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * use so we figure it out for them, but unfortunately this clutters 1177ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * things a bit. */ 11781187c968852e3c668f3b9376083851f81f6eee22Joel Beckerstatic int ocfs2_reserve_clusters_with_limit(struct ocfs2_super *osb, 11791187c968852e3c668f3b9376083851f81f6eee22Joel Becker u32 bits_wanted, u64 max_block, 118060ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma int flags, 11811187c968852e3c668f3b9376083851f81f6eee22Joel Becker struct ocfs2_alloc_context **ac) 1182ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1183ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 1184ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1185cd86128088554d64fea1679191509f00e6353c5bRobert P. J. Day *ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL); 1186ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!(*ac)) { 1187ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -ENOMEM; 1188ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1189ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1190ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1191ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1192ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (*ac)->ac_bits_wanted = bits_wanted; 11931187c968852e3c668f3b9376083851f81f6eee22Joel Becker (*ac)->ac_max_block = max_block; 1194ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1195ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -ENOSPC; 119660ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma if (!(flags & ALLOC_GROUPS_FROM_GLOBAL) && 119760ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma ocfs2_alloc_should_use_local(osb, bits_wanted)) { 1198ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = ocfs2_reserve_local_alloc_bits(osb, 1199ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bits_wanted, 1200ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh *ac); 1201a57c8fd2ad238258cc983049008aea5f985804b2Mark Fasheh if ((status < 0) && (status != -ENOSPC)) { 1202ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1203ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1204ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1205ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1206ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1207ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status == -ENOSPC) { 1208ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = ocfs2_reserve_cluster_bitmap_bits(osb, *ac); 1209ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1210ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status != -ENOSPC) 1211ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1212ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1213ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1214ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1215ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1216ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = 0; 1217ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 1218ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if ((status < 0) && *ac) { 1219ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_free_alloc_context(*ac); 1220ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh *ac = NULL; 1221ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1222ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1223c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 1224c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 1225ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 1226ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1227ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 12281187c968852e3c668f3b9376083851f81f6eee22Joel Beckerint ocfs2_reserve_clusters(struct ocfs2_super *osb, 12291187c968852e3c668f3b9376083851f81f6eee22Joel Becker u32 bits_wanted, 12301187c968852e3c668f3b9376083851f81f6eee22Joel Becker struct ocfs2_alloc_context **ac) 12311187c968852e3c668f3b9376083851f81f6eee22Joel Becker{ 123260ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma return ocfs2_reserve_clusters_with_limit(osb, bits_wanted, 0, 123360ca81e82dae4aa2e8ae84cf96b4d08535931669Tao Ma ALLOC_NEW_GROUP, ac); 12341187c968852e3c668f3b9376083851f81f6eee22Joel Becker} 12351187c968852e3c668f3b9376083851f81f6eee22Joel Becker 1236ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* 1237ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * More or less lifted from ext3. I'll leave their description below: 1238ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 1239ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * "For ext3 allocations, we must not reuse any blocks which are 1240ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * allocated in the bitmap buffer's "last committed data" copy. This 1241ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * prevents deletes from freeing up the page for reuse until we have 1242ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * committed the delete transaction. 1243ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 1244ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * If we didn't do this, then deleting something and reallocating it as 1245ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * data would allow the old block to be overwritten before the 1246ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * transaction committed (because we force data to disk before commit). 1247ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * This would lead to corruption if we crashed between overwriting the 1248ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * data and committing the delete. 1249ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 1250ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * @@@ We may want to make this allocation behaviour conditional on 1251ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * data-writes at some point, and disable it for metadata allocations or 1252ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * sync-data inodes." 1253ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 1254ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * Note: OCFS2 already does this differently for metadata vs data 1255c78bad11fbf1272ea021f56458025dc98486d6f4Joe Perches * allocations, as those bitmaps are separate and undo access is never 1256ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * called on a metadata group descriptor. 1257ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh */ 1258ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_test_bg_bit_allocatable(struct buffer_head *bg_bh, 1259ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int nr) 1260ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1261ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; 126294e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran int ret; 1263ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1264ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap)) 1265ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return 0; 126694e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran 126794e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran if (!buffer_jbd(bg_bh)) 1268ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return 1; 1269ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 127094e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran jbd_lock_bh_state(bg_bh); 1271ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg = (struct ocfs2_group_desc *) bh2jh(bg_bh)->b_committed_data; 127294e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran if (bg) 127394e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran ret = !ocfs2_test_bit(nr, (unsigned long *)bg->bg_bitmap); 127494e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran else 127594e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran ret = 1; 127694e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran jbd_unlock_bh_state(bg_bh); 127794e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran 127894e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran return ret; 1279ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1280ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1281ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_block_group_find_clear_bits(struct ocfs2_super *osb, 1282ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *bg_bh, 1283ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh unsigned int bits_wanted, 12847bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh unsigned int total_bits, 12857d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res) 1286ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1287ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh void *bitmap; 1288ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 best_offset, best_size; 1289ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int offset, start, found, status = 0; 1290ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; 1291ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 12924203530613280281868b3ca36c817530bca3825cJoel Becker /* Callers got this descriptor from 12934203530613280281868b3ca36c817530bca3825cJoel Becker * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ 12944203530613280281868b3ca36c817530bca3825cJoel Becker BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); 1295ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1296ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh found = start = best_offset = best_size = 0; 1297ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bitmap = bg->bg_bitmap; 1298ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 12997bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh while((offset = ocfs2_find_next_zero_bit(bitmap, total_bits, start)) != -1) { 13007bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh if (offset == total_bits) 1301ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh break; 1302ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1303ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!ocfs2_test_bg_bit_allocatable(bg_bh, offset)) { 1304ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* We found a zero, but we can't use it as it 1305ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * hasn't been put to disk yet! */ 1306ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh found = 0; 1307ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh start = offset + 1; 1308ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } else if (offset == start) { 1309ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* we found a zero */ 1310ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh found++; 1311ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* move start to the next bit to test */ 1312ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh start++; 1313ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } else { 1314ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* got a zero after some ones */ 1315ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh found = 1; 1316ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh start = offset + 1; 1317ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1318ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (found > best_size) { 1319ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh best_size = found; 1320ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh best_offset = start - found; 1321ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1322ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* we got everything we needed */ 1323ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (found == bits_wanted) { 1324ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* mlog(0, "Found it all!\n"); */ 1325ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh break; 1326ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1327ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1328ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 13297d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker if (best_size) { 13307d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bit_offset = best_offset; 13317d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bits = best_size; 1332ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } else { 1333ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -ENOSPC; 1334ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* No error log here -- see the comment above 1335ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * ocfs2_test_bg_bit_allocatable */ 1336ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1337ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1338ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 1339ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1340ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 13410a2fcd8988ac682f443fd5b0a7c48154a7b42ef2Younger Liuint ocfs2_block_group_set_bits(handle_t *handle, 1342ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *alloc_inode, 1343ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *bg, 1344ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *group_bh, 1345ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh unsigned int bit_off, 1346ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh unsigned int num_bits) 1347ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1348ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 1349ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh void *bitmap = bg->bg_bitmap; 1350ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int journal_type = OCFS2_JOURNAL_ACCESS_WRITE; 1351ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 13524203530613280281868b3ca36c817530bca3825cJoel Becker /* All callers get the descriptor via 13534203530613280281868b3ca36c817530bca3825cJoel Becker * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ 13544203530613280281868b3ca36c817530bca3825cJoel Becker BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); 1355ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(le16_to_cpu(bg->bg_free_bits_count) < num_bits); 1356ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 13572f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_block_group_set_bits(bit_off, num_bits); 1358ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1359ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (ocfs2_is_cluster_bitmap(alloc_inode)) 1360ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh journal_type = OCFS2_JOURNAL_ACCESS_UNDO; 1361ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 136213723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker status = ocfs2_journal_access_gd(handle, 13630cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker INODE_CACHE(alloc_inode), 136413723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker group_bh, 136513723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker journal_type); 1366ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1367ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1368ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1369ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1370ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1371ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le16_add_cpu(&bg->bg_free_bits_count, -num_bits); 13729b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda if (le16_to_cpu(bg->bg_free_bits_count) > le16_to_cpu(bg->bg_bits)) { 13739b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda ocfs2_error(alloc_inode->i_sb, "Group descriptor # %llu has bit" 13749b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda " count %u but claims %u are freed. num_bits %d", 13759b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda (unsigned long long)le64_to_cpu(bg->bg_blkno), 13769b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda le16_to_cpu(bg->bg_bits), 13779b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda le16_to_cpu(bg->bg_free_bits_count), num_bits); 13789b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda return -EROFS; 13799b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda } 1380ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh while(num_bits--) 1381ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_set_bit(bit_off++, bitmap); 1382ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1383ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, group_bh); 1384ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1385ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 1386ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 1387ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1388ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1389ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* find the one with the most empty bits */ 1390ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline u16 ocfs2_find_victim_chain(struct ocfs2_chain_list *cl) 1391ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1392ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 curr, best; 1393ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1394ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(!cl->cl_next_free_rec); 1395ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1396ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh best = curr = 0; 1397ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh while (curr < le16_to_cpu(cl->cl_next_free_rec)) { 1398ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (le32_to_cpu(cl->cl_recs[curr].c_free) > 1399ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(cl->cl_recs[best].c_free)) 1400ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh best = curr; 1401ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh curr++; 1402ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1403ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1404ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(best >= le16_to_cpu(cl->cl_next_free_rec)); 1405ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return best; 1406ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1407ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 14081fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fashehstatic int ocfs2_relink_block_group(handle_t *handle, 1409ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *alloc_inode, 1410ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *fe_bh, 1411ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *bg_bh, 1412ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *prev_bg_bh, 1413ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 chain) 1414ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1415ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 1416ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* there is a really tiny chance the journal calls could fail, 1417ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * but we wouldn't want inconsistent blocks in *any* case. */ 1418493098413bdb45f223ff0552e2f734849491dbbeJie Liu u64 bg_ptr, prev_bg_ptr; 1419ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; 1420ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) bg_bh->b_data; 1421ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *prev_bg = (struct ocfs2_group_desc *) prev_bg_bh->b_data; 1422ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 14234203530613280281868b3ca36c817530bca3825cJoel Becker /* The caller got these descriptors from 14244203530613280281868b3ca36c817530bca3825cJoel Becker * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ 14254203530613280281868b3ca36c817530bca3825cJoel Becker BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); 14264203530613280281868b3ca36c817530bca3825cJoel Becker BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(prev_bg)); 1427ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 14282f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_relink_block_group( 14292f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)le64_to_cpu(fe->i_blkno), chain, 14302f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)le64_to_cpu(bg->bg_blkno), 14312f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)le64_to_cpu(prev_bg->bg_blkno)); 1432ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1433ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg_ptr = le64_to_cpu(bg->bg_next_group); 1434ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh prev_bg_ptr = le64_to_cpu(prev_bg->bg_next_group); 1435ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 14360cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker status = ocfs2_journal_access_gd(handle, INODE_CACHE(alloc_inode), 14370cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker prev_bg_bh, 143813723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker OCFS2_JOURNAL_ACCESS_WRITE); 143925e2892101ba541dce8593c698d70ccc278bc1fdAndrew Morton if (status < 0) 1440493098413bdb45f223ff0552e2f734849491dbbeJie Liu goto out; 1441ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1442ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh prev_bg->bg_next_group = bg->bg_next_group; 1443ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, prev_bg_bh); 1444ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 14450cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker status = ocfs2_journal_access_gd(handle, INODE_CACHE(alloc_inode), 14460cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker bg_bh, OCFS2_JOURNAL_ACCESS_WRITE); 144725e2892101ba541dce8593c698d70ccc278bc1fdAndrew Morton if (status < 0) 1448493098413bdb45f223ff0552e2f734849491dbbeJie Liu goto out_rollback_prev_bg; 1449ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1450ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg->bg_next_group = fe->id2.i_chain.cl_recs[chain].c_blkno; 1451ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, bg_bh); 1452ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 14530cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker status = ocfs2_journal_access_di(handle, INODE_CACHE(alloc_inode), 14540cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker fe_bh, OCFS2_JOURNAL_ACCESS_WRITE); 145525e2892101ba541dce8593c698d70ccc278bc1fdAndrew Morton if (status < 0) 1456493098413bdb45f223ff0552e2f734849491dbbeJie Liu goto out_rollback_bg; 1457ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1458ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe->id2.i_chain.cl_recs[chain].c_blkno = bg->bg_blkno; 1459ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, fe_bh); 1460ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1461493098413bdb45f223ff0552e2f734849491dbbeJie Liuout: 146225e2892101ba541dce8593c698d70ccc278bc1fdAndrew Morton if (status < 0) 146325e2892101ba541dce8593c698d70ccc278bc1fdAndrew Morton mlog_errno(status); 1464493098413bdb45f223ff0552e2f734849491dbbeJie Liu return status; 14654203530613280281868b3ca36c817530bca3825cJoel Becker 1466493098413bdb45f223ff0552e2f734849491dbbeJie Liuout_rollback_bg: 1467493098413bdb45f223ff0552e2f734849491dbbeJie Liu bg->bg_next_group = cpu_to_le64(bg_ptr); 1468493098413bdb45f223ff0552e2f734849491dbbeJie Liuout_rollback_prev_bg: 1469493098413bdb45f223ff0552e2f734849491dbbeJie Liu prev_bg->bg_next_group = cpu_to_le64(prev_bg_ptr); 147025e2892101ba541dce8593c698d70ccc278bc1fdAndrew Morton goto out; 1471ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1472ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1473ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline int ocfs2_block_group_reasonably_empty(struct ocfs2_group_desc *bg, 1474ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 wanted) 1475ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1476ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return le16_to_cpu(bg->bg_free_bits_count) > wanted; 1477ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1478ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1479ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* return 0 on success, -ENOSPC to keep searching and any other < 0 1480ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * value on error. */ 1481ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_cluster_group_search(struct inode *inode, 1482ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *group_bh, 1483ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted, u32 min_bits, 14841187c968852e3c668f3b9376083851f81f6eee22Joel Becker u64 max_block, 14857d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res) 1486ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1487ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int search = -ENOSPC; 1488ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int ret; 14891187c968852e3c668f3b9376083851f81f6eee22Joel Becker u64 blkoff; 14907bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh struct ocfs2_group_desc *gd = (struct ocfs2_group_desc *) group_bh->b_data; 14919c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 14927bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh unsigned int max_bits, gd_cluster_off; 1493ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1494ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(!ocfs2_is_cluster_bitmap(inode)); 1495ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 14967bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh if (gd->bg_free_bits_count) { 14977bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh max_bits = le16_to_cpu(gd->bg_bits); 14987bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 14997bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh /* Tail groups in cluster bitmaps which aren't cpg 150025985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * aligned are prone to partial extension by a failed 15017bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh * fs resize. If the file system resize never got to 15027bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh * update the dinode cluster count, then we don't want 15037bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh * to trust any clusters past it, regardless of what 15047bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh * the group descriptor says. */ 15057bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh gd_cluster_off = ocfs2_blocks_to_clusters(inode->i_sb, 15067bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh le64_to_cpu(gd->bg_blkno)); 15077bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh if ((gd_cluster_off + max_bits) > 15087bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh OCFS2_I(inode)->ip_clusters) { 15097bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh max_bits = OCFS2_I(inode)->ip_clusters - gd_cluster_off; 15102f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_cluster_group_search_wrong_max_bits( 15112f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)le64_to_cpu(gd->bg_blkno), 15122f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma le16_to_cpu(gd->bg_bits), 15132f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma OCFS2_I(inode)->ip_clusters, max_bits); 15147bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh } 15157bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh 1516ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ret = ocfs2_block_group_find_clear_bits(OCFS2_SB(inode->i_sb), 1517ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh group_bh, bits_wanted, 15187d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker max_bits, res); 1519ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (ret) 1520ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return ret; 1521ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 15221187c968852e3c668f3b9376083851f81f6eee22Joel Becker if (max_block) { 15231187c968852e3c668f3b9376083851f81f6eee22Joel Becker blkoff = ocfs2_clusters_to_blocks(inode->i_sb, 15241187c968852e3c668f3b9376083851f81f6eee22Joel Becker gd_cluster_off + 15257d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bit_offset + 15267d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bits); 15272f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_cluster_group_search_max_block( 15282f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)blkoff, 15292f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)max_block); 15301187c968852e3c668f3b9376083851f81f6eee22Joel Becker if (blkoff > max_block) 15311187c968852e3c668f3b9376083851f81f6eee22Joel Becker return -ENOSPC; 15321187c968852e3c668f3b9376083851f81f6eee22Joel Becker } 15331187c968852e3c668f3b9376083851f81f6eee22Joel Becker 1534ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* ocfs2_block_group_find_clear_bits() might 1535ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * return success, but we still want to return 1536ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * -ENOSPC unless it found the minimum number 1537ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * of bits. */ 15387d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker if (min_bits <= res->sr_bits) 1539ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh search = 0; /* success */ 15407d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker else if (res->sr_bits) { 15419c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh /* 15429c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh * Don't show bits which we'll be returning 15439c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh * for allocation to the local alloc bitmap. 15449c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh */ 15457d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker ocfs2_local_alloc_seen_free_bits(osb, res->sr_bits); 1546ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1547ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1548ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1549ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return search; 1550ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1551ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1552ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_block_group_search(struct inode *inode, 1553ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *group_bh, 1554ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted, u32 min_bits, 15551187c968852e3c668f3b9376083851f81f6eee22Joel Becker u64 max_block, 15567d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res) 1557ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1558ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int ret = -ENOSPC; 15591187c968852e3c668f3b9376083851f81f6eee22Joel Becker u64 blkoff; 1560ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *bg = (struct ocfs2_group_desc *) group_bh->b_data; 1561ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1562ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(min_bits != 1); 1563ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ocfs2_is_cluster_bitmap(inode)); 1564ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 15651187c968852e3c668f3b9376083851f81f6eee22Joel Becker if (bg->bg_free_bits_count) { 1566ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ret = ocfs2_block_group_find_clear_bits(OCFS2_SB(inode->i_sb), 1567ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh group_bh, bits_wanted, 15687bf72edee614e10b8d470c40a326f47bfdd69992Mark Fasheh le16_to_cpu(bg->bg_bits), 15697d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res); 15701187c968852e3c668f3b9376083851f81f6eee22Joel Becker if (!ret && max_block) { 15717d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker blkoff = le64_to_cpu(bg->bg_blkno) + 15727d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bit_offset + res->sr_bits; 15732f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_block_group_search_max_block( 15742f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)blkoff, 15752f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)max_block); 15761187c968852e3c668f3b9376083851f81f6eee22Joel Becker if (blkoff > max_block) 15771187c968852e3c668f3b9376083851f81f6eee22Joel Becker ret = -ENOSPC; 15781187c968852e3c668f3b9376083851f81f6eee22Joel Becker } 15791187c968852e3c668f3b9376083851f81f6eee22Joel Becker } 1580ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1581ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return ret; 1582ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1583ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 15840a2fcd8988ac682f443fd5b0a7c48154a7b42ef2Younger Liuint ocfs2_alloc_dinode_update_counts(struct inode *inode, 15851fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fasheh handle_t *handle, 1586883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh struct buffer_head *di_bh, 1587883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh u32 num_bits, 1588883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh u16 chain) 1589883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh{ 1590883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh int ret; 1591883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh u32 tmp_used; 1592883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; 1593883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh struct ocfs2_chain_list *cl = (struct ocfs2_chain_list *) &di->id2.i_chain; 1594883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 15950cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, 159613723d00e374c2a6d6ccb5af6de965e89c3e1b01Joel Becker OCFS2_JOURNAL_ACCESS_WRITE); 1597883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh if (ret < 0) { 1598883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh mlog_errno(ret); 1599883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh goto out; 1600883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh } 1601883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1602883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh tmp_used = le32_to_cpu(di->id1.bitmap1.i_used); 1603883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh di->id1.bitmap1.i_used = cpu_to_le32(num_bits + tmp_used); 1604883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh le32_add_cpu(&cl->cl_recs[chain].c_free, -num_bits); 1605ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, di_bh); 1606883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1607883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fashehout: 1608883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh return ret; 1609883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh} 1610883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1611db66c71577d525c0cd65e66ff675747565783ba4Younger Liuvoid ocfs2_rollback_alloc_dinode_counts(struct inode *inode, 1612db66c71577d525c0cd65e66ff675747565783ba4Younger Liu struct buffer_head *di_bh, 1613db66c71577d525c0cd65e66ff675747565783ba4Younger Liu u32 num_bits, 1614db66c71577d525c0cd65e66ff675747565783ba4Younger Liu u16 chain) 1615db66c71577d525c0cd65e66ff675747565783ba4Younger Liu{ 1616db66c71577d525c0cd65e66ff675747565783ba4Younger Liu u32 tmp_used; 1617db66c71577d525c0cd65e66ff675747565783ba4Younger Liu struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; 1618db66c71577d525c0cd65e66ff675747565783ba4Younger Liu struct ocfs2_chain_list *cl; 1619db66c71577d525c0cd65e66ff675747565783ba4Younger Liu 1620db66c71577d525c0cd65e66ff675747565783ba4Younger Liu cl = (struct ocfs2_chain_list *)&di->id2.i_chain; 1621db66c71577d525c0cd65e66ff675747565783ba4Younger Liu tmp_used = le32_to_cpu(di->id1.bitmap1.i_used); 1622db66c71577d525c0cd65e66ff675747565783ba4Younger Liu di->id1.bitmap1.i_used = cpu_to_le32(tmp_used - num_bits); 1623db66c71577d525c0cd65e66ff675747565783ba4Younger Liu le32_add_cpu(&cl->cl_recs[chain].c_free, num_bits); 1624db66c71577d525c0cd65e66ff675747565783ba4Younger Liu} 1625db66c71577d525c0cd65e66ff675747565783ba4Younger Liu 1626ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Beckerstatic int ocfs2_bg_discontig_fix_by_rec(struct ocfs2_suballoc_result *res, 1627ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker struct ocfs2_extent_rec *rec, 1628ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker struct ocfs2_chain_list *cl) 162913e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker{ 163013e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker unsigned int bpc = le16_to_cpu(cl->cl_bpc); 163113e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker unsigned int bitoff = le32_to_cpu(rec->e_cpos) * bpc; 163272094e43e3af5020510f920321d71f1798fa896dAl Viro unsigned int bitcount = le16_to_cpu(rec->e_leaf_clusters) * bpc; 163313e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker 163413e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker if (res->sr_bit_offset < bitoff) 163513e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker return 0; 163613e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker if (res->sr_bit_offset >= (bitoff + bitcount)) 163713e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker return 0; 1638ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker res->sr_blkno = le64_to_cpu(rec->e_blkno) + 1639ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker (res->sr_bit_offset - bitoff); 164013e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker if ((res->sr_bit_offset + res->sr_bits) > (bitoff + bitcount)) 164113e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker res->sr_bits = (bitoff + bitcount) - res->sr_bit_offset; 164213e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker return 1; 164313e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker} 164413e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker 1645ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Beckerstatic void ocfs2_bg_discontig_fix_result(struct ocfs2_alloc_context *ac, 1646ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker struct ocfs2_group_desc *bg, 1647ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker struct ocfs2_suballoc_result *res) 164813e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker{ 164913e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker int i; 16502b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker u64 bg_blkno = res->sr_bg_blkno; /* Save off */ 165113e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker struct ocfs2_extent_rec *rec; 165213e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker struct ocfs2_dinode *di = (struct ocfs2_dinode *)ac->ac_bh->b_data; 165313e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker struct ocfs2_chain_list *cl = &di->id2.i_chain; 165413e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker 1655ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker if (ocfs2_is_cluster_bitmap(ac->ac_inode)) { 1656ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker res->sr_blkno = 0; 165713e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker return; 1658ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker } 165913e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker 1660ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker res->sr_blkno = res->sr_bg_blkno + res->sr_bit_offset; 16612b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker res->sr_bg_blkno = 0; /* Clear it for contig block groups */ 16624711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma if (!ocfs2_supports_discontig_bg(OCFS2_SB(ac->ac_inode->i_sb)) || 1663ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker !bg->bg_list.l_next_free_rec) 166413e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker return; 166513e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker 166613e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker for (i = 0; i < le16_to_cpu(bg->bg_list.l_next_free_rec); i++) { 166713e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker rec = &bg->bg_list.l_recs[i]; 16682b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker if (ocfs2_bg_discontig_fix_by_rec(res, rec, cl)) { 16692b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker res->sr_bg_blkno = bg_blkno; /* Restore */ 167013e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker break; 16712b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker } 167213e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker } 167313e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker} 167413e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker 1675883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fashehstatic int ocfs2_search_one_group(struct ocfs2_alloc_context *ac, 16761fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fasheh handle_t *handle, 1677883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh u32 bits_wanted, 1678883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh u32 min_bits, 16797d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res, 1680883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh u16 *bits_left) 1681883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh{ 1682883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh int ret; 1683883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh struct buffer_head *group_bh = NULL; 1684883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh struct ocfs2_group_desc *gd; 168568f64d471be38631d7196b938d9809802dd467faJoel Becker struct ocfs2_dinode *di = (struct ocfs2_dinode *)ac->ac_bh->b_data; 1686883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh struct inode *alloc_inode = ac->ac_inode; 1687883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 16887d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker ret = ocfs2_read_group_descriptor(alloc_inode, di, 16897d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bg_blkno, &group_bh); 1690883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh if (ret < 0) { 1691883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh mlog_errno(ret); 1692883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh return ret; 1693883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh } 1694883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1695883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh gd = (struct ocfs2_group_desc *) group_bh->b_data; 1696883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh ret = ac->ac_group_search(alloc_inode, group_bh, bits_wanted, min_bits, 16977d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker ac->ac_max_block, res); 1698883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh if (ret < 0) { 1699883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh if (ret != -ENOSPC) 1700883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh mlog_errno(ret); 1701883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh goto out; 1702883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh } 1703883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 170413e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker if (!ret) 1705ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker ocfs2_bg_discontig_fix_result(ac, gd, res); 170613e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker 1707e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh /* 1708e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * sr_bg_blkno might have been changed by 1709e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * ocfs2_bg_discontig_fix_result 1710e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh */ 1711e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh res->sr_bg_stable_blkno = group_bh->b_blocknr; 1712e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 1713e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (ac->ac_find_loc_only) 1714e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh goto out_loc_only; 1715e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 1716883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh ret = ocfs2_alloc_dinode_update_counts(alloc_inode, handle, ac->ac_bh, 17177d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bits, 1718883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh le16_to_cpu(gd->bg_chain)); 1719883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh if (ret < 0) { 1720883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh mlog_errno(ret); 1721883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh goto out; 1722883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh } 1723883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1724883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh ret = ocfs2_block_group_set_bits(handle, alloc_inode, gd, group_bh, 17257d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bit_offset, res->sr_bits); 1726db66c71577d525c0cd65e66ff675747565783ba4Younger Liu if (ret < 0) { 1727db66c71577d525c0cd65e66ff675747565783ba4Younger Liu ocfs2_rollback_alloc_dinode_counts(alloc_inode, ac->ac_bh, 1728db66c71577d525c0cd65e66ff675747565783ba4Younger Liu res->sr_bits, 1729db66c71577d525c0cd65e66ff675747565783ba4Younger Liu le16_to_cpu(gd->bg_chain)); 1730883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh mlog_errno(ret); 1731db66c71577d525c0cd65e66ff675747565783ba4Younger Liu } 1732883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1733e49e27674d1dd2717ad90b21ece8f83102153315Mark Fashehout_loc_only: 1734883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh *bits_left = le16_to_cpu(gd->bg_free_bits_count); 1735883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1736883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fashehout: 1737883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh brelse(group_bh); 1738883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1739883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh return ret; 1740883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh} 1741883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1742ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic int ocfs2_search_chain(struct ocfs2_alloc_context *ac, 17431fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fasheh handle_t *handle, 1744ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted, 1745ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 min_bits, 17467d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res, 1747883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh u16 *bits_left) 1748ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1749ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 17507d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker u16 chain; 1751ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 next_group; 1752ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *alloc_inode = ac->ac_inode; 1753ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *group_bh = NULL; 1754ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *prev_group_bh = NULL; 1755ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_dinode *fe = (struct ocfs2_dinode *) ac->ac_bh->b_data; 1756ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_chain_list *cl = (struct ocfs2_chain_list *) &fe->id2.i_chain; 1757ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *bg; 1758ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1759ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh chain = ac->ac_chain; 17602f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_search_chain_begin( 17612f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)OCFS2_I(alloc_inode)->ip_blkno, 17622f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma bits_wanted, chain); 1763ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 176468f64d471be38631d7196b938d9809802dd467faJoel Becker status = ocfs2_read_group_descriptor(alloc_inode, fe, 176568f64d471be38631d7196b938d9809802dd467faJoel Becker le64_to_cpu(cl->cl_recs[chain].c_blkno), 176668f64d471be38631d7196b938d9809802dd467faJoel Becker &group_bh); 1767ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1768ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1769ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1770ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1771ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg = (struct ocfs2_group_desc *) group_bh->b_data; 1772ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1773ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -ENOSPC; 1774ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* for now, the chain search is a bit simplistic. We just use 1775ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * the 1st group with any empty bits. */ 17761187c968852e3c668f3b9376083851f81f6eee22Joel Becker while ((status = ac->ac_group_search(alloc_inode, group_bh, 17771187c968852e3c668f3b9376083851f81f6eee22Joel Becker bits_wanted, min_bits, 17787d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker ac->ac_max_block, 17797d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res)) == -ENOSPC) { 1780ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!bg->bg_next_group) 1781ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh break; 1782a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh 1783a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh brelse(prev_group_bh); 1784a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh prev_group_bh = NULL; 1785a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh 1786ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh next_group = le64_to_cpu(bg->bg_next_group); 1787ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh prev_group_bh = group_bh; 1788ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh group_bh = NULL; 178968f64d471be38631d7196b938d9809802dd467faJoel Becker status = ocfs2_read_group_descriptor(alloc_inode, fe, 179068f64d471be38631d7196b938d9809802dd467faJoel Becker next_group, &group_bh); 1791ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1792ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1793ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1794ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1795ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg = (struct ocfs2_group_desc *) group_bh->b_data; 1796ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1797ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1798ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status != -ENOSPC) 1799ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1800ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1801ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1802ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 18032f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_search_chain_succ( 18042f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)le64_to_cpu(bg->bg_blkno), res->sr_bits); 1805ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 18067d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bg_blkno = le64_to_cpu(bg->bg_blkno); 1807ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 18087d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker BUG_ON(res->sr_bits == 0); 180913e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker if (!status) 1810ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker ocfs2_bg_discontig_fix_result(ac, bg, res); 181113e434cf0cacd2f03a7f4cd077e3e995ef5ef710Joel Becker 1812e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh /* 1813e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * sr_bg_blkno might have been changed by 1814e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * ocfs2_bg_discontig_fix_result 1815e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh */ 1816e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh res->sr_bg_stable_blkno = group_bh->b_blocknr; 1817ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1818ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* 1819ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * Keep track of previous block descriptor read. When 1820ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * we find a target, if we have read more than X 1821ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * number of descriptors, and the target is reasonably 1822ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * empty, relink him to top of his chain. 1823ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 1824ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * We've read 0 extra blocks and only send one more to 1825ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * the transaction, yet the next guy to search has a 1826ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * much easier time. 1827ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * 1828ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * Do this *after* figuring out how many bits we're taking out 1829ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * of our target group. 1830ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh */ 1831309a85b6861fedbb48a22d45e0e079d1be993b3aXiaowei.Hu if (!ac->ac_disable_chain_relink && 1832ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (prev_group_bh) && 18337d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker (ocfs2_block_group_reasonably_empty(bg, res->sr_bits))) { 1834ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = ocfs2_relink_block_group(handle, alloc_inode, 1835ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ac->ac_bh, group_bh, 1836ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh prev_group_bh, chain); 1837ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1838ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1839ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1840ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1841ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1842ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1843e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (ac->ac_find_loc_only) 1844e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh goto out_loc_only; 1845e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 1846d51349829c378c06ba4aa7d4b16ca23739858608Mark Fasheh status = ocfs2_alloc_dinode_update_counts(alloc_inode, handle, 1847d51349829c378c06ba4aa7d4b16ca23739858608Mark Fasheh ac->ac_bh, res->sr_bits, 1848d51349829c378c06ba4aa7d4b16ca23739858608Mark Fasheh chain); 1849d51349829c378c06ba4aa7d4b16ca23739858608Mark Fasheh if (status) { 1850ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1851ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1852ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1853ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1854ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = ocfs2_block_group_set_bits(handle, 1855ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh alloc_inode, 1856ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bg, 1857ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh group_bh, 18587d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bit_offset, 18597d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res->sr_bits); 1860ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 1861db66c71577d525c0cd65e66ff675747565783ba4Younger Liu ocfs2_rollback_alloc_dinode_counts(alloc_inode, 1862db66c71577d525c0cd65e66ff675747565783ba4Younger Liu ac->ac_bh, res->sr_bits, chain); 1863ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1864ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1865ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1866ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 18672f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_search_chain_end( 18682f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)le64_to_cpu(fe->i_blkno), 18692f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma res->sr_bits); 1870ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1871e49e27674d1dd2717ad90b21ece8f83102153315Mark Fashehout_loc_only: 1872883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh *bits_left = le16_to_cpu(bg->bg_free_bits_count); 1873ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 1874a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh brelse(group_bh); 1875a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh brelse(prev_group_bh); 1876ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1877c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 1878c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 1879ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 1880ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1881ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1882ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* will give out up to bits_wanted contiguous bits. */ 1883aa8f8e93c898a0319bcd6c79a9a42fe52abac7d7Joel Beckerstatic int ocfs2_claim_suballoc_bits(struct ocfs2_alloc_context *ac, 18841fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fasheh handle_t *handle, 1885ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted, 1886ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 min_bits, 18877d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker struct ocfs2_suballoc_result *res) 1888ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 1889ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 1890ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 victim, i; 1891883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh u16 bits_left = 0; 1892b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh u64 hint = ac->ac_last_group; 1893ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_chain_list *cl; 1894ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_dinode *fe; 1895ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1896ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ac->ac_bits_given >= ac->ac_bits_wanted); 1897ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(bits_wanted > (ac->ac_bits_wanted - ac->ac_bits_given)); 1898ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(!ac->ac_bh); 1899ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1900ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe = (struct ocfs2_dinode *) ac->ac_bh->b_data; 190110995aa2451afa20b721cc7de856cae1a13dba57Joel Becker 190210995aa2451afa20b721cc7de856cae1a13dba57Joel Becker /* The bh was validated by the inode read during 190310995aa2451afa20b721cc7de856cae1a13dba57Joel Becker * ocfs2_reserve_suballoc_bits(). Any corruption is a code bug. */ 190410995aa2451afa20b721cc7de856cae1a13dba57Joel Becker BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); 190510995aa2451afa20b721cc7de856cae1a13dba57Joel Becker 1906ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (le32_to_cpu(fe->id1.bitmap1.i_used) >= 1907ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(fe->id1.bitmap1.i_total)) { 1908aa8f8e93c898a0319bcd6c79a9a42fe52abac7d7Joel Becker ocfs2_error(ac->ac_inode->i_sb, 1909aa8f8e93c898a0319bcd6c79a9a42fe52abac7d7Joel Becker "Chain allocator dinode %llu has %u used " 1910b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh "bits but only %u total.", 1911b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh (unsigned long long)le64_to_cpu(fe->i_blkno), 1912ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(fe->id1.bitmap1.i_used), 1913ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(fe->id1.bitmap1.i_total)); 1914ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -EIO; 1915ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1916ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1917ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1918b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh res->sr_bg_blkno = hint; 19197d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker if (res->sr_bg_blkno) { 1920883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh /* Attempt to short-circuit the usual search mechanism 1921883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh * by jumping straight to the most recently used 1922b595076a180a56d1bb170e6eceda6eb9d76f4cd3Uwe Kleine-König * allocation group. This helps us maintain some 1923883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh * contiguousness across allocations. */ 1924da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh status = ocfs2_search_one_group(ac, handle, bits_wanted, 19257d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker min_bits, res, &bits_left); 19267d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker if (!status) 1927883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh goto set_hint; 1928883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh if (status < 0 && status != -ENOSPC) { 1929883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh mlog_errno(status); 1930883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh goto bail; 1931883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh } 1932883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh } 1933883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1934ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh cl = (struct ocfs2_chain_list *) &fe->id2.i_chain; 1935ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1936ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh victim = ocfs2_find_victim_chain(cl); 1937ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ac->ac_chain = victim; 1938ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 19397d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits, 19407d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res, &bits_left); 1941b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh if (!status) { 1942b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh hint = ocfs2_group_from_res(res); 1943883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh goto set_hint; 1944b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh } 1945ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0 && status != -ENOSPC) { 1946ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1947ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1948ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1949ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 19502f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_claim_suballoc_bits(victim); 1951ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1952ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* If we didn't pick a good victim, then just default to 1953ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * searching each chain in order. Don't allow chain relinking 1954ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * because we only calculate enough journal credits for one 1955ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * relink per alloc. */ 1956309a85b6861fedbb48a22d45e0e079d1be993b3aXiaowei.Hu ac->ac_disable_chain_relink = 1; 1957ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh for (i = 0; i < le16_to_cpu(cl->cl_next_free_rec); i ++) { 1958ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (i == victim) 1959ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh continue; 1960ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!cl->cl_recs[i].c_free) 1961ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh continue; 1962ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1963ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ac->ac_chain = i; 1964da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh status = ocfs2_search_chain(ac, handle, bits_wanted, min_bits, 19657d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res, &bits_left); 1966b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh if (!status) { 1967b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh hint = ocfs2_group_from_res(res); 1968ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh break; 1969b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh } 1970ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0 && status != -ENOSPC) { 1971ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 1972ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 1973ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1974ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 1975ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1976883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fashehset_hint: 1977883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh if (status != -ENOSPC) { 1978883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh /* If the next search of this group is not likely to 1979883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh * yield a suitable extent, then we reset the last 1980883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh * group hint so as to not waste a disk read */ 1981883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh if (bits_left < min_bits) 1982883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh ac->ac_last_group = 0; 1983883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh else 1984b2b6ebf5f740e015b2155343958f067e594323eaMark Fasheh ac->ac_last_group = hint; 1985883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh } 1986883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fasheh 1987883d4cae4a2b01a05193cf2665c77b7489a8b6a0Mark Fashehbail: 1988c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 1989c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 1990ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 1991ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 1992ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 19931ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Beckerint ocfs2_claim_metadata(handle_t *handle, 1994ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_alloc_context *ac, 1995ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 bits_wanted, 19962b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker u64 *suballoc_loc, 1997ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 *suballoc_bit_start, 1998ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh unsigned int *num_bits, 1999ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 *blkno_start) 2000ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2001ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 2002ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker struct ocfs2_suballoc_result res = { .sr_blkno = 0, }; 2003ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2004ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(!ac); 2005ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ac->ac_bits_wanted < (ac->ac_bits_given + bits_wanted)); 2006ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ac->ac_which != OCFS2_AC_USE_META); 2007ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2008aa8f8e93c898a0319bcd6c79a9a42fe52abac7d7Joel Becker status = ocfs2_claim_suballoc_bits(ac, 2009da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh handle, 2010ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bits_wanted, 2011ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1, 20127d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker &res); 2013ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 2014ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 2015ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 2016ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 20171ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Becker atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); 2018ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 20192b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker *suballoc_loc = res.sr_bg_blkno; 20207d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker *suballoc_bit_start = res.sr_bit_offset; 2021ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker *blkno_start = res.sr_blkno; 20227d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker ac->ac_bits_given += res.sr_bits; 20237d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker *num_bits = res.sr_bits; 2024ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = 0; 2025ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 2026c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 2027c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 2028ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 2029ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2030ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2031138211515c102807a16c02fdc15feef1f6ef8124Tao Mastatic void ocfs2_init_inode_ac_group(struct inode *dir, 2032abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma struct buffer_head *parent_di_bh, 2033138211515c102807a16c02fdc15feef1f6ef8124Tao Ma struct ocfs2_alloc_context *ac) 2034138211515c102807a16c02fdc15feef1f6ef8124Tao Ma{ 2035abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma struct ocfs2_dinode *di = (struct ocfs2_dinode *)parent_di_bh->b_data; 2036138211515c102807a16c02fdc15feef1f6ef8124Tao Ma /* 2037138211515c102807a16c02fdc15feef1f6ef8124Tao Ma * Try to allocate inodes from some specific group. 2038138211515c102807a16c02fdc15feef1f6ef8124Tao Ma * 2039138211515c102807a16c02fdc15feef1f6ef8124Tao Ma * If the parent dir has recorded the last group used in allocation, 2040138211515c102807a16c02fdc15feef1f6ef8124Tao Ma * cool, use it. Otherwise if we try to allocate new inode from the 2041138211515c102807a16c02fdc15feef1f6ef8124Tao Ma * same slot the parent dir belongs to, use the same chunk. 2042138211515c102807a16c02fdc15feef1f6ef8124Tao Ma * 2043138211515c102807a16c02fdc15feef1f6ef8124Tao Ma * We are very careful here to avoid the mistake of setting 2044138211515c102807a16c02fdc15feef1f6ef8124Tao Ma * ac_last_group to a group descriptor from a different (unlocked) slot. 2045138211515c102807a16c02fdc15feef1f6ef8124Tao Ma */ 2046138211515c102807a16c02fdc15feef1f6ef8124Tao Ma if (OCFS2_I(dir)->ip_last_used_group && 2047138211515c102807a16c02fdc15feef1f6ef8124Tao Ma OCFS2_I(dir)->ip_last_used_slot == ac->ac_alloc_slot) 2048138211515c102807a16c02fdc15feef1f6ef8124Tao Ma ac->ac_last_group = OCFS2_I(dir)->ip_last_used_group; 2049abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma else if (le16_to_cpu(di->i_suballoc_slot) == ac->ac_alloc_slot) { 2050abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma if (di->i_suballoc_loc) 2051abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma ac->ac_last_group = le64_to_cpu(di->i_suballoc_loc); 2052abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma else 2053abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma ac->ac_last_group = ocfs2_which_suballoc_group( 2054abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma le64_to_cpu(di->i_blkno), 2055abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma le16_to_cpu(di->i_suballoc_bit)); 2056abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma } 2057138211515c102807a16c02fdc15feef1f6ef8124Tao Ma} 2058138211515c102807a16c02fdc15feef1f6ef8124Tao Ma 2059138211515c102807a16c02fdc15feef1f6ef8124Tao Mastatic inline void ocfs2_save_inode_ac_group(struct inode *dir, 2060138211515c102807a16c02fdc15feef1f6ef8124Tao Ma struct ocfs2_alloc_context *ac) 2061138211515c102807a16c02fdc15feef1f6ef8124Tao Ma{ 2062138211515c102807a16c02fdc15feef1f6ef8124Tao Ma OCFS2_I(dir)->ip_last_used_group = ac->ac_last_group; 2063138211515c102807a16c02fdc15feef1f6ef8124Tao Ma OCFS2_I(dir)->ip_last_used_slot = ac->ac_alloc_slot; 2064138211515c102807a16c02fdc15feef1f6ef8124Tao Ma} 2065138211515c102807a16c02fdc15feef1f6ef8124Tao Ma 2066e49e27674d1dd2717ad90b21ece8f83102153315Mark Fashehint ocfs2_find_new_inode_loc(struct inode *dir, 2067e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct buffer_head *parent_fe_bh, 2068e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct ocfs2_alloc_context *ac, 2069e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh u64 *fe_blkno) 2070e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh{ 2071e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh int ret; 2072e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh handle_t *handle = NULL; 2073e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct ocfs2_suballoc_result *res; 2074e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2075e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh BUG_ON(!ac); 2076e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh BUG_ON(ac->ac_bits_given != 0); 2077e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh BUG_ON(ac->ac_bits_wanted != 1); 2078e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh BUG_ON(ac->ac_which != OCFS2_AC_USE_INODE); 2079e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2080e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh res = kzalloc(sizeof(*res), GFP_NOFS); 2081e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (res == NULL) { 2082e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ret = -ENOMEM; 2083e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh mlog_errno(ret); 2084e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh goto out; 2085e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh } 2086e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2087e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ocfs2_init_inode_ac_group(dir, parent_fe_bh, ac); 2088e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2089e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh /* 2090e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * The handle started here is for chain relink. Alternatively, 2091e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * we could just disable relink for these calls. 2092e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh */ 2093e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh handle = ocfs2_start_trans(OCFS2_SB(dir->i_sb), OCFS2_SUBALLOC_ALLOC); 2094e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (IS_ERR(handle)) { 2095e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ret = PTR_ERR(handle); 2096e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh handle = NULL; 2097e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh mlog_errno(ret); 2098e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh goto out; 2099e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh } 2100e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2101e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh /* 2102e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * This will instruct ocfs2_claim_suballoc_bits and 2103e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * ocfs2_search_one_group to search but save actual allocation 2104e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * for later. 2105e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh */ 2106e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ac->ac_find_loc_only = 1; 2107e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2108e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ret = ocfs2_claim_suballoc_bits(ac, handle, 1, 1, res); 2109e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (ret < 0) { 2110e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh mlog_errno(ret); 2111e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh goto out; 2112e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh } 2113e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2114e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ac->ac_find_loc_priv = res; 2115e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh *fe_blkno = res->sr_blkno; 21166fdb702d6262b18b1b41a35f1f81903b0a2bc2c9Darrick J. Wong ocfs2_update_inode_fsync_trans(handle, dir, 0); 2117e49e27674d1dd2717ad90b21ece8f83102153315Mark Fashehout: 2118e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (handle) 2119e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ocfs2_commit_trans(OCFS2_SB(dir->i_sb), handle); 2120e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2121e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (ret) 2122e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh kfree(res); 2123e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2124e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh return ret; 2125e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh} 2126e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2127e49e27674d1dd2717ad90b21ece8f83102153315Mark Fashehint ocfs2_claim_new_inode_at_loc(handle_t *handle, 2128e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct inode *dir, 2129e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct ocfs2_alloc_context *ac, 2130e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh u64 *suballoc_loc, 2131e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh u16 *suballoc_bit, 2132e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh u64 di_blkno) 2133e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh{ 2134e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh int ret; 2135e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh u16 chain; 2136e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct ocfs2_suballoc_result *res = ac->ac_find_loc_priv; 2137e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct buffer_head *bg_bh = NULL; 2138e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct ocfs2_group_desc *bg; 2139e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh struct ocfs2_dinode *di = (struct ocfs2_dinode *) ac->ac_bh->b_data; 2140e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2141e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh /* 2142e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * Since di_blkno is being passed back in, we check for any 2143e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * inconsistencies which may have happened between 2144e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * calls. These are code bugs as di_blkno is not expected to 2145e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh * change once returned from ocfs2_find_new_inode_loc() 2146e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh */ 2147e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh BUG_ON(res->sr_blkno != di_blkno); 2148e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2149e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ret = ocfs2_read_group_descriptor(ac->ac_inode, di, 2150e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh res->sr_bg_stable_blkno, &bg_bh); 2151e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (ret) { 2152e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh mlog_errno(ret); 2153e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh goto out; 2154e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh } 2155e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2156e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh bg = (struct ocfs2_group_desc *) bg_bh->b_data; 2157e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh chain = le16_to_cpu(bg->bg_chain); 2158e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2159e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ret = ocfs2_alloc_dinode_update_counts(ac->ac_inode, handle, 2160e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ac->ac_bh, res->sr_bits, 2161e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh chain); 2162e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (ret) { 2163e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh mlog_errno(ret); 2164e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh goto out; 2165e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh } 2166e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2167e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ret = ocfs2_block_group_set_bits(handle, 2168e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ac->ac_inode, 2169e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh bg, 2170e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh bg_bh, 2171e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh res->sr_bit_offset, 2172e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh res->sr_bits); 2173e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh if (ret < 0) { 2174db66c71577d525c0cd65e66ff675747565783ba4Younger Liu ocfs2_rollback_alloc_dinode_counts(ac->ac_inode, 2175db66c71577d525c0cd65e66ff675747565783ba4Younger Liu ac->ac_bh, res->sr_bits, chain); 2176e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh mlog_errno(ret); 2177e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh goto out; 2178e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh } 2179e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 21802f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_claim_new_inode_at_loc((unsigned long long)di_blkno, 21812f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma res->sr_bits); 2182e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2183e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); 2184e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2185e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh BUG_ON(res->sr_bits != 1); 2186e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2187e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh *suballoc_loc = res->sr_bg_blkno; 2188e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh *suballoc_bit = res->sr_bit_offset; 2189e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ac->ac_bits_given++; 2190e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh ocfs2_save_inode_ac_group(dir, ac); 2191e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2192e49e27674d1dd2717ad90b21ece8f83102153315Mark Fashehout: 2193e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh brelse(bg_bh); 2194e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 2195e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh return ret; 2196e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh} 2197e49e27674d1dd2717ad90b21ece8f83102153315Mark Fasheh 21981ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Beckerint ocfs2_claim_new_inode(handle_t *handle, 2199138211515c102807a16c02fdc15feef1f6ef8124Tao Ma struct inode *dir, 2200138211515c102807a16c02fdc15feef1f6ef8124Tao Ma struct buffer_head *parent_fe_bh, 2201ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_alloc_context *ac, 22022b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker u64 *suballoc_loc, 2203ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 *suballoc_bit, 2204ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 *fe_blkno) 2205ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2206ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 22072b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker struct ocfs2_suballoc_result res; 2208ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2209ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(!ac); 2210ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ac->ac_bits_given != 0); 2211ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ac->ac_bits_wanted != 1); 2212ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ac->ac_which != OCFS2_AC_USE_INODE); 2213ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2214138211515c102807a16c02fdc15feef1f6ef8124Tao Ma ocfs2_init_inode_ac_group(dir, parent_fe_bh, ac); 2215138211515c102807a16c02fdc15feef1f6ef8124Tao Ma 2216aa8f8e93c898a0319bcd6c79a9a42fe52abac7d7Joel Becker status = ocfs2_claim_suballoc_bits(ac, 2217da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh handle, 2218ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1, 2219ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 1, 22207d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker &res); 2221ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 2222ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 2223ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 2224ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 22251ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Becker atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs); 2226ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 22277d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker BUG_ON(res.sr_bits != 1); 2228ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 22292b6cb576aa80611f1f6a3c88708d1e68a8d97985Joel Becker *suballoc_loc = res.sr_bg_blkno; 22307d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker *suballoc_bit = res.sr_bit_offset; 2231ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker *fe_blkno = res.sr_blkno; 2232ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ac->ac_bits_given++; 2233138211515c102807a16c02fdc15feef1f6ef8124Tao Ma ocfs2_save_inode_ac_group(dir, ac); 2234ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = 0; 2235ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 2236c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 2237c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 2238ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 2239ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2240ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2241ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* translate a group desc. blkno and it's bitmap offset into 2242ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * disk cluster offset. */ 2243ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline u32 ocfs2_desc_bitmap_to_cluster_off(struct inode *inode, 2244ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 bg_blkno, 2245ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 bg_bit_off) 2246ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2247ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 2248ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 cluster = 0; 2249ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2250ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(!ocfs2_is_cluster_bitmap(inode)); 2251ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2252ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (bg_blkno != osb->first_cluster_group_blkno) 2253ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh cluster = ocfs2_blocks_to_clusters(inode->i_sb, bg_blkno); 2254ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh cluster += (u32) bg_bit_off; 2255ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return cluster; 2256ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2257ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2258ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* given a cluster offset, calculate which block group it belongs to 2259ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * and return that block offset. */ 2260d659072f736837e56b6433d58e5315ad1d4d5ccfTao Mau64 ocfs2_which_cluster_group(struct inode *inode, u32 cluster) 2261ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2262ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 2263ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 group_no; 2264ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2265ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(!ocfs2_is_cluster_bitmap(inode)); 2266ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2267ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh group_no = cluster / osb->bitmap_cpg; 2268ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!group_no) 2269ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return osb->first_cluster_group_blkno; 2270ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return ocfs2_clusters_to_blocks(inode->i_sb, 2271ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh group_no * osb->bitmap_cpg); 2272ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2273ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2274ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* given the block number of a cluster start, calculate which cluster 2275ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * group and descriptor bitmap offset that corresponds to. */ 2276ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline void ocfs2_block_to_cluster_group(struct inode *inode, 2277ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 data_blkno, 2278ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 *bg_blkno, 2279ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 *bg_bit_off) 2280ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2281ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 2282ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 data_cluster = ocfs2_blocks_to_clusters(osb->sb, data_blkno); 2283ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2284ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(!ocfs2_is_cluster_bitmap(inode)); 2285ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2286ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh *bg_blkno = ocfs2_which_cluster_group(inode, 2287ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh data_cluster); 2288ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2289ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (*bg_blkno == osb->first_cluster_group_blkno) 2290ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh *bg_bit_off = (u16) data_cluster; 2291ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh else 2292ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh *bg_bit_off = (u16) ocfs2_blocks_to_clusters(osb->sb, 2293ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh data_blkno - *bg_blkno); 2294ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2295ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2296ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* 2297ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * min_bits - minimum contiguous chunk from this total allocation we 2298ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * can handle. set to what we asked for originally for a full 2299ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * contig. allocation, set to '1' to indicate we can deal with extents 2300ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * of any size. 2301ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh */ 23021ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Beckerint __ocfs2_claim_clusters(handle_t *handle, 2303415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh struct ocfs2_alloc_context *ac, 2304415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh u32 min_clusters, 2305415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh u32 max_clusters, 2306415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh u32 *cluster_start, 2307415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh u32 *num_clusters) 2308ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2309ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 2310415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh unsigned int bits_wanted = max_clusters; 2311ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker struct ocfs2_suballoc_result res = { .sr_blkno = 0, }; 23121ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Becker struct ocfs2_super *osb = OCFS2_SB(ac->ac_inode->i_sb); 2313ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2314ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ac->ac_bits_given >= ac->ac_bits_wanted); 2315ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2316ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(ac->ac_which != OCFS2_AC_USE_LOCAL 2317ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh && ac->ac_which != OCFS2_AC_USE_MAIN); 2318ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2319ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (ac->ac_which == OCFS2_AC_USE_LOCAL) { 232033d5d380d667ad264675cfdb297dfc3c5b6542ccMark Fasheh WARN_ON(min_clusters > 1); 232133d5d380d667ad264675cfdb297dfc3c5b6542ccMark Fasheh 2322ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = ocfs2_claim_local_alloc_bits(osb, 2323ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh handle, 2324ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ac, 2325ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bits_wanted, 2326ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh cluster_start, 2327ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh num_clusters); 2328ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!status) 2329ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh atomic_inc(&osb->alloc_stats.local_data); 2330ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } else { 2331ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (min_clusters > (osb->bitmap_cpg - 1)) { 2332ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* The only paths asking for contiguousness 2333ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * should know about this already. */ 23342fbe8d1ebe004425b4f7b8bba345623d2280be82Sunil Mushran mlog(ML_ERROR, "minimum allocation requested %u exceeds " 23352fbe8d1ebe004425b4f7b8bba345623d2280be82Sunil Mushran "group bitmap size %u!\n", min_clusters, 23362fbe8d1ebe004425b4f7b8bba345623d2280be82Sunil Mushran osb->bitmap_cpg); 2337ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = -ENOSPC; 2338ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 2339ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2340ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* clamp the current request down to a realistic size. */ 2341ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (bits_wanted > (osb->bitmap_cpg - 1)) 2342ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bits_wanted = osb->bitmap_cpg - 1; 2343ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2344aa8f8e93c898a0319bcd6c79a9a42fe52abac7d7Joel Becker status = ocfs2_claim_suballoc_bits(ac, 2345da5cbf2f9df922cfdafa39351691fa83517f1e25Mark Fasheh handle, 2346ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh bits_wanted, 2347ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh min_clusters, 23487d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker &res); 2349ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (!status) { 2350ba2066351b630f0205ebf725f5c81a2a07a77cd7Joel Becker BUG_ON(res.sr_blkno); /* cluster alloc can't set */ 2351ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh *cluster_start = 2352ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_desc_bitmap_to_cluster_off(ac->ac_inode, 23537d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res.sr_bg_blkno, 23547d1fe093bf04124dcc50c5dde1765bd098464bfaJoel Becker res.sr_bit_offset); 2355ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh atomic_inc(&osb->alloc_stats.bitmap_data); 23564711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma *num_clusters = res.sr_bits; 2357ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2358ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2359ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 2360ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status != -ENOSPC) 2361ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 2362ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 2363ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2364ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 23654711954eaa8d30f653fda238cecf919f1ae40d6fTao Ma ac->ac_bits_given += *num_clusters; 2366ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2367ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 2368c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 2369c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 2370ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 2371ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2372ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 23731ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Beckerint ocfs2_claim_clusters(handle_t *handle, 2374415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh struct ocfs2_alloc_context *ac, 2375415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh u32 min_clusters, 2376415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh u32 *cluster_start, 2377415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh u32 *num_clusters) 2378415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh{ 2379415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh unsigned int bits_wanted = ac->ac_bits_wanted - ac->ac_bits_given; 2380415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh 23811ed9b777f77929ae961d6f9cdf828a07200ba71cJoel Becker return __ocfs2_claim_clusters(handle, ac, min_clusters, 2382415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh bits_wanted, cluster_start, num_clusters); 2383415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh} 2384415cb800375cc4e89fb5a6a454e484bd4adbffb4Mark Fasheh 2385b4414eea0e7b9c134262c801a87e338bf675962cMark Fashehstatic int ocfs2_block_group_clear_bits(handle_t *handle, 2386b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct inode *alloc_inode, 2387b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct ocfs2_group_desc *bg, 2388b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct buffer_head *group_bh, 2389b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int bit_off, 2390b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int num_bits, 2391b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh void (*undo_fn)(unsigned int bit, 2392b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned long *bmap)) 2393ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2394ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 2395ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh unsigned int tmp; 2396ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *undo_bg = NULL; 2397ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 23984203530613280281868b3ca36c817530bca3825cJoel Becker /* The caller got this descriptor from 23994203530613280281868b3ca36c817530bca3825cJoel Becker * ocfs2_read_group_descriptor(). Any corruption is a code bug. */ 24004203530613280281868b3ca36c817530bca3825cJoel Becker BUG_ON(!OCFS2_IS_VALID_GROUP_DESC(bg)); 2401ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 24022f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_block_group_clear_bits(bit_off, num_bits); 2403ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2404b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh BUG_ON(undo_fn && !ocfs2_is_cluster_bitmap(alloc_inode)); 24050cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker status = ocfs2_journal_access_gd(handle, INODE_CACHE(alloc_inode), 2406b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh group_bh, 2407b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh undo_fn ? 2408b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh OCFS2_JOURNAL_ACCESS_UNDO : 2409b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh OCFS2_JOURNAL_ACCESS_WRITE); 2410ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 2411ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 2412ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 2413ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2414ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2415b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh if (undo_fn) { 241694e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran jbd_lock_bh_state(group_bh); 241794e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran undo_bg = (struct ocfs2_group_desc *) 241894e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran bh2jh(group_bh)->b_committed_data; 241994e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran BUG_ON(!undo_bg); 242094e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran } 2421ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2422ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh tmp = num_bits; 2423ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh while(tmp--) { 2424ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_clear_bit((bit_off + tmp), 2425ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh (unsigned long *) bg->bg_bitmap); 2426b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh if (undo_fn) 2427b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh undo_fn(bit_off + tmp, 2428b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh (unsigned long *) undo_bg->bg_bitmap); 2429ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2430ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le16_add_cpu(&bg->bg_free_bits_count, num_bits); 24319b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda if (le16_to_cpu(bg->bg_free_bits_count) > le16_to_cpu(bg->bg_bits)) { 24329b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda ocfs2_error(alloc_inode->i_sb, "Group descriptor # %llu has bit" 24339b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda " count %u but claims %u are freed. num_bits %d", 24349b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda (unsigned long long)le64_to_cpu(bg->bg_blkno), 24359b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda le16_to_cpu(bg->bg_bits), 24369b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda le16_to_cpu(bg->bg_free_bits_count), num_bits); 24379b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda return -EROFS; 24389b5cd10e4c14a1a642076ace6a73be3d33c91fb6Srinivas Eeda } 2439ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2440b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh if (undo_fn) 244194e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran jbd_unlock_bh_state(group_bh); 244294e41ecfe0f202df948fdbb19a53308a58cf2184Sunil Mushran 2443ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, group_bh); 2444ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 2445ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 2446ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2447ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2448ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh/* 2449ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * expects the suballoc inode to already be locked. 2450ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh */ 2451b4414eea0e7b9c134262c801a87e338bf675962cMark Fashehstatic int _ocfs2_free_suballoc_bits(handle_t *handle, 2452b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct inode *alloc_inode, 2453b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct buffer_head *alloc_bh, 2454b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int start_bit, 2455b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh u64 bg_blkno, 2456b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int count, 2457b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh void (*undo_fn)(unsigned int bit, 2458b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned long *bitmap)) 2459ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2460ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status = 0; 2461ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u32 tmp_used; 2462ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_dinode *fe = (struct ocfs2_dinode *) alloc_bh->b_data; 2463ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_chain_list *cl = &fe->id2.i_chain; 2464ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *group_bh = NULL; 2465ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_group_desc *group; 2466ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 246710995aa2451afa20b721cc7de856cae1a13dba57Joel Becker /* The alloc_bh comes from ocfs2_free_dinode() or 246810995aa2451afa20b721cc7de856cae1a13dba57Joel Becker * ocfs2_free_clusters(). The callers have all locked the 246910995aa2451afa20b721cc7de856cae1a13dba57Joel Becker * allocator and gotten alloc_bh from the lock call. This 247025985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * validates the dinode buffer. Any corruption that has happened 247110995aa2451afa20b721cc7de856cae1a13dba57Joel Becker * is a code bug. */ 247210995aa2451afa20b721cc7de856cae1a13dba57Joel Becker BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); 2473ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON((count + start_bit) > ocfs2_bits_per_group(cl)); 2474ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 24752f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_free_suballoc_bits( 24762f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)OCFS2_I(alloc_inode)->ip_blkno, 24772f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)bg_blkno, 24782f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma start_bit, count); 2479ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 248068f64d471be38631d7196b938d9809802dd467faJoel Becker status = ocfs2_read_group_descriptor(alloc_inode, fe, bg_blkno, 248168f64d471be38631d7196b938d9809802dd467faJoel Becker &group_bh); 2482ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 2483ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 2484ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 2485ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2486ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh group = (struct ocfs2_group_desc *) group_bh->b_data; 248768f64d471be38631d7196b938d9809802dd467faJoel Becker 2488ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON((count + start_bit) > le16_to_cpu(group->bg_bits)); 2489ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2490ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh status = ocfs2_block_group_clear_bits(handle, alloc_inode, 2491ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh group, group_bh, 2492b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh start_bit, count, undo_fn); 2493ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 2494ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 2495ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 2496ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2497ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 24980cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker status = ocfs2_journal_access_di(handle, INODE_CACHE(alloc_inode), 24990cf2f7632b1789b811ab20b611c4156e6de2b055Joel Becker alloc_bh, OCFS2_JOURNAL_ACCESS_WRITE); 2500ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh if (status < 0) { 2501ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 2502ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh goto bail; 2503ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2504ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2505ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_add_cpu(&cl->cl_recs[le16_to_cpu(group->bg_chain)].c_free, 2506ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh count); 2507ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh tmp_used = le32_to_cpu(fe->id1.bitmap1.i_used); 2508ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe->id1.bitmap1.i_used = cpu_to_le32(tmp_used - count); 2509ec20cec7a351584ca6c70ead012e73d61f9a8e04Joel Becker ocfs2_journal_dirty(handle, alloc_bh); 2510ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2511ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehbail: 2512a81cb88b64a479b78c6dd5666678d50171865db8Mark Fasheh brelse(group_bh); 2513ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2514c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 2515c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 2516ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 2517ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2518ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2519b4414eea0e7b9c134262c801a87e338bf675962cMark Fashehint ocfs2_free_suballoc_bits(handle_t *handle, 2520b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct inode *alloc_inode, 2521b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct buffer_head *alloc_bh, 2522b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int start_bit, 2523b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh u64 bg_blkno, 2524b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int count) 2525b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh{ 2526b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh return _ocfs2_free_suballoc_bits(handle, alloc_inode, alloc_bh, 2527b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh start_bit, bg_blkno, count, NULL); 2528b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh} 2529b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh 25301fabe1481fac9e01bf8bffa60a2307ef379aa5deMark Fashehint ocfs2_free_dinode(handle_t *handle, 2531ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct inode *inode_alloc_inode, 2532ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct buffer_head *inode_alloc_bh, 2533ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_dinode *di) 2534ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2535ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 blk = le64_to_cpu(di->i_blkno); 2536ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 bit = le16_to_cpu(di->i_suballoc_bit); 2537ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 bg_blkno = ocfs2_which_suballoc_group(blk, bit); 2538ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 253974380c479ad83addeff8a172ab95f59557b5b0c3Tao Ma if (di->i_suballoc_loc) 254074380c479ad83addeff8a172ab95f59557b5b0c3Tao Ma bg_blkno = le64_to_cpu(di->i_suballoc_loc); 2541ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return ocfs2_free_suballoc_bits(handle, inode_alloc_inode, 2542ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh inode_alloc_bh, bit, bg_blkno, 1); 2543ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2544ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2545b4414eea0e7b9c134262c801a87e338bf675962cMark Fashehstatic int _ocfs2_free_clusters(handle_t *handle, 2546b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct inode *bitmap_inode, 2547b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct buffer_head *bitmap_bh, 2548b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh u64 start_blk, 2549b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int num_clusters, 2550b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh void (*undo_fn)(unsigned int bit, 2551b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned long *bitmap)) 2552ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2553ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int status; 2554ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u16 bg_start_bit; 2555ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh u64 bg_blkno; 2556ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh struct ocfs2_dinode *fe; 2557ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2558ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh /* You can't ever have a contiguous set of clusters 2559ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * bigger than a block group bitmap so we never have to worry 2560ef6b689b63b9f5227ccee6f16dd9ee3faf58a464Tao Ma * about looping on them. 2561ef6b689b63b9f5227ccee6f16dd9ee3faf58a464Tao Ma * This is expensive. We can safely remove once this stuff has 2562ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh * gotten tested really well. */ 2563ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh BUG_ON(start_blk != ocfs2_clusters_to_blocks(bitmap_inode->i_sb, ocfs2_blocks_to_clusters(bitmap_inode->i_sb, start_blk))); 2564ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2565ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe = (struct ocfs2_dinode *) bitmap_bh->b_data; 2566ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2567ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh ocfs2_block_to_cluster_group(bitmap_inode, start_blk, &bg_blkno, 2568ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh &bg_start_bit); 2569ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 25702f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_free_clusters((unsigned long long)bg_blkno, 25712f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned long long)start_blk, 25722f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma bg_start_bit, num_clusters); 2573ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2574b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh status = _ocfs2_free_suballoc_bits(handle, bitmap_inode, bitmap_bh, 2575b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh bg_start_bit, bg_blkno, 2576b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh num_clusters, undo_fn); 25779c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh if (status < 0) { 2578ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh mlog_errno(status); 25799c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh goto out; 25809c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh } 25819c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh 25829c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh ocfs2_local_alloc_seen_free_bits(OCFS2_SB(bitmap_inode->i_sb), 25839c7af40b210e87f8fddd97b0badc0a352862234aMark Fasheh num_clusters); 2584ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 25859c7af40b210e87f8fddd97b0badc0a352862234aMark Fashehout: 2586c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 2587c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 2588ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh return status; 2589ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2590ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2591b4414eea0e7b9c134262c801a87e338bf675962cMark Fashehint ocfs2_free_clusters(handle_t *handle, 2592b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct inode *bitmap_inode, 2593b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct buffer_head *bitmap_bh, 2594b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh u64 start_blk, 2595b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int num_clusters) 2596b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh{ 2597b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh return _ocfs2_free_clusters(handle, bitmap_inode, bitmap_bh, 2598b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh start_blk, num_clusters, 2599b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh _ocfs2_set_bit); 2600b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh} 2601b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh 2602b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh/* 2603b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh * Give never-used clusters back to the global bitmap. We don't need 2604b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh * to protect these bits in the undo buffer. 2605b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh */ 2606b4414eea0e7b9c134262c801a87e338bf675962cMark Fashehint ocfs2_release_clusters(handle_t *handle, 2607b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct inode *bitmap_inode, 2608b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh struct buffer_head *bitmap_bh, 2609b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh u64 start_blk, 2610b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh unsigned int num_clusters) 2611b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh{ 2612b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh return _ocfs2_free_clusters(handle, bitmap_inode, bitmap_bh, 2613b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh start_blk, num_clusters, 2614b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh _ocfs2_clear_bit); 2615b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh} 2616b4414eea0e7b9c134262c801a87e338bf675962cMark Fasheh 2617ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline void ocfs2_debug_bg(struct ocfs2_group_desc *bg) 2618ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2619ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("Block Group:\n"); 2620ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("bg_signature: %s\n", bg->bg_signature); 2621ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("bg_size: %u\n", bg->bg_size); 2622ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("bg_bits: %u\n", bg->bg_bits); 2623ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("bg_free_bits_count: %u\n", bg->bg_free_bits_count); 2624ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("bg_chain: %u\n", bg->bg_chain); 2625ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("bg_generation: %u\n", le32_to_cpu(bg->bg_generation)); 2626b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh printk("bg_next_group: %llu\n", 2627b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh (unsigned long long)bg->bg_next_group); 2628b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh printk("bg_parent_dinode: %llu\n", 2629b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh (unsigned long long)bg->bg_parent_dinode); 2630b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh printk("bg_blkno: %llu\n", 2631b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh (unsigned long long)bg->bg_blkno); 2632ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2633ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2634ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fashehstatic inline void ocfs2_debug_suballoc_inode(struct ocfs2_dinode *fe) 2635ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh{ 2636ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh int i; 2637ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh 2638b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh printk("Suballoc Inode %llu:\n", (unsigned long long)fe->i_blkno); 2639ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("i_signature: %s\n", fe->i_signature); 2640b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh printk("i_size: %llu\n", 2641b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh (unsigned long long)fe->i_size); 2642ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("i_clusters: %u\n", fe->i_clusters); 2643ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("i_generation: %u\n", 2644ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(fe->i_generation)); 2645ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("id1.bitmap1.i_used: %u\n", 2646ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(fe->id1.bitmap1.i_used)); 2647ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("id1.bitmap1.i_total: %u\n", 2648ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh le32_to_cpu(fe->id1.bitmap1.i_total)); 2649ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("id2.i_chain.cl_cpg: %u\n", fe->id2.i_chain.cl_cpg); 2650ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("id2.i_chain.cl_bpc: %u\n", fe->id2.i_chain.cl_bpc); 2651ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("id2.i_chain.cl_count: %u\n", fe->id2.i_chain.cl_count); 2652ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("id2.i_chain.cl_next_free_rec: %u\n", 2653ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe->id2.i_chain.cl_next_free_rec); 2654ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh for(i = 0; i < fe->id2.i_chain.cl_next_free_rec; i++) { 2655ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("fe->id2.i_chain.cl_recs[%d].c_free: %u\n", i, 2656ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe->id2.i_chain.cl_recs[i].c_free); 2657ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh printk("fe->id2.i_chain.cl_recs[%d].c_total: %u\n", i, 2658ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh fe->id2.i_chain.cl_recs[i].c_total); 2659b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh printk("fe->id2.i_chain.cl_recs[%d].c_blkno: %llu\n", i, 2660b0697053f9e8de9cea3d510d9e290851ece9460bMark Fasheh (unsigned long long)fe->id2.i_chain.cl_recs[i].c_blkno); 2661ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh } 2662ccd979bdbce9fba8412beb3f1de68a9d0171b12cMark Fasheh} 2663e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2664e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma/* 2665e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * For a given allocation, determine which allocators will need to be 2666e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * accessed, and lock them, reserving the appropriate number of bits. 2667e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * 2668e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * Sparse file systems call this from ocfs2_write_begin_nolock() 2669e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * and ocfs2_allocate_unwritten_extents(). 2670e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * 2671e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * File systems which don't support holes call this from 2672e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * ocfs2_extend_allocation(). 2673e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma */ 2674f99b9b7ccf6a691f653cec45f36bfdd1e94769c7Joel Beckerint ocfs2_lock_allocators(struct inode *inode, 2675f99b9b7ccf6a691f653cec45f36bfdd1e94769c7Joel Becker struct ocfs2_extent_tree *et, 2676e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma u32 clusters_to_add, u32 extents_to_split, 2677e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma struct ocfs2_alloc_context **data_ac, 2678f99b9b7ccf6a691f653cec45f36bfdd1e94769c7Joel Becker struct ocfs2_alloc_context **meta_ac) 2679e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma{ 2680e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma int ret = 0, num_free_extents; 2681e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma unsigned int max_recs_needed = clusters_to_add + 2 * extents_to_split; 2682e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 2683e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2684e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma *meta_ac = NULL; 2685e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (data_ac) 2686e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma *data_ac = NULL; 2687e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2688e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma BUG_ON(clusters_to_add != 0 && data_ac == NULL); 2689e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 26903d03a305ded8057155bd3c801e64ffef9f534827Joel Becker num_free_extents = ocfs2_num_free_extents(osb, et); 2691e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (num_free_extents < 0) { 2692e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma ret = num_free_extents; 2693e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma mlog_errno(ret); 2694e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma goto out; 2695e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma } 2696e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2697e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma /* 2698e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * Sparse allocation file systems need to be more conservative 2699e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * with reserving room for expansion - the actual allocation 2700e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * happens while we've got a journal handle open so re-taking 2701e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * a cluster lock (because we ran out of room for another 2702e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * extent) will violate ordering rules. 2703e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * 2704e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * Most of the time we'll only be seeing this 1 cluster at a time 2705e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * anyway. 2706e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * 2707e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * Always lock for any unwritten extents - we might want to 2708e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * add blocks during a split. 2709e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma */ 2710e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (!num_free_extents || 2711e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma (ocfs2_sparse_alloc(osb) && num_free_extents < max_recs_needed)) { 2712f99b9b7ccf6a691f653cec45f36bfdd1e94769c7Joel Becker ret = ocfs2_reserve_new_metadata(osb, et->et_root_el, meta_ac); 2713e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (ret < 0) { 2714e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (ret != -ENOSPC) 2715e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma mlog_errno(ret); 2716e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma goto out; 2717e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma } 2718e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma } 2719e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2720e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (clusters_to_add == 0) 2721e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma goto out; 2722e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2723e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma ret = ocfs2_reserve_clusters(osb, clusters_to_add, data_ac); 2724e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (ret < 0) { 2725e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (ret != -ENOSPC) 2726e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma mlog_errno(ret); 2727e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma goto out; 2728e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma } 2729e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2730e7d4cb6bc19658646357eeff134645cd9bc3479fTao Maout: 2731e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (ret) { 2732e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma if (*meta_ac) { 2733e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma ocfs2_free_alloc_context(*meta_ac); 2734e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma *meta_ac = NULL; 2735e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma } 2736e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2737e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma /* 2738e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma * We cannot have an error and a non null *data_ac. 2739e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma */ 2740e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma } 2741e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma 2742e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma return ret; 2743e7d4cb6bc19658646357eeff134645cd9bc3479fTao Ma} 27446ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 27456ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang/* 27466ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * Read the inode specified by blkno to get suballoc_slot and 27476ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * suballoc_bit. 27486ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang */ 27496ca497a83e592d64e050c4d04b6dedb8c915f39awengang wangstatic int ocfs2_get_suballoc_slot_bit(struct ocfs2_super *osb, u64 blkno, 2750889f004a8c83d515f275078687f859bc0d5ede9dTao Ma u16 *suballoc_slot, u64 *group_blkno, 2751889f004a8c83d515f275078687f859bc0d5ede9dTao Ma u16 *suballoc_bit) 27526ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang{ 27536ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang int status; 27546ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang struct buffer_head *inode_bh = NULL; 27556ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang struct ocfs2_dinode *inode_fe; 27566ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 27572f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_get_suballoc_slot_bit((unsigned long long)blkno); 27586ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 27596ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang /* dirty read disk */ 27606ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang status = ocfs2_read_blocks_sync(osb, blkno, 1, &inode_bh); 27616ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (status < 0) { 27625b09b507daaa882d888b6cd78ee89ba9caace44bJoel Becker mlog(ML_ERROR, "read block %llu failed %d\n", 27635b09b507daaa882d888b6cd78ee89ba9caace44bJoel Becker (unsigned long long)blkno, status); 27646ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang goto bail; 27656ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang } 27666ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 27676ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang inode_fe = (struct ocfs2_dinode *) inode_bh->b_data; 27686ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (!OCFS2_IS_VALID_DINODE(inode_fe)) { 27695b09b507daaa882d888b6cd78ee89ba9caace44bJoel Becker mlog(ML_ERROR, "invalid inode %llu requested\n", 27705b09b507daaa882d888b6cd78ee89ba9caace44bJoel Becker (unsigned long long)blkno); 27716ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang status = -EINVAL; 27726ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang goto bail; 27736ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang } 27746ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 27750fba813748f16f4eaf24d492c505226c4026d58fTao Ma if (le16_to_cpu(inode_fe->i_suballoc_slot) != (u16)OCFS2_INVALID_SLOT && 27766ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang (u32)le16_to_cpu(inode_fe->i_suballoc_slot) > osb->max_slots - 1) { 27776ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mlog(ML_ERROR, "inode %llu has invalid suballoc slot %u\n", 27785b09b507daaa882d888b6cd78ee89ba9caace44bJoel Becker (unsigned long long)blkno, 27795b09b507daaa882d888b6cd78ee89ba9caace44bJoel Becker (u32)le16_to_cpu(inode_fe->i_suballoc_slot)); 27806ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang status = -EINVAL; 27816ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang goto bail; 27826ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang } 27836ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 27846ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (suballoc_slot) 27856ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang *suballoc_slot = le16_to_cpu(inode_fe->i_suballoc_slot); 27866ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (suballoc_bit) 27876ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang *suballoc_bit = le16_to_cpu(inode_fe->i_suballoc_bit); 2788889f004a8c83d515f275078687f859bc0d5ede9dTao Ma if (group_blkno) 2789889f004a8c83d515f275078687f859bc0d5ede9dTao Ma *group_blkno = le64_to_cpu(inode_fe->i_suballoc_loc); 27906ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 27916ca497a83e592d64e050c4d04b6dedb8c915f39awengang wangbail: 27926ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang brelse(inode_bh); 27936ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 2794c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 2795c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 27966ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang return status; 27976ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang} 27986ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 27996ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang/* 28006ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * test whether bit is SET in allocator bitmap or not. on success, 0 28016ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * is returned and *res is 1 for SET; 0 otherwise. when fails, errno 28026ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * is returned and *res is meaningless. Call this after you have 28036ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * cluster locked against suballoc, or you may get a result based on 28046ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * non-up2date contents 28056ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang */ 28066ca497a83e592d64e050c4d04b6dedb8c915f39awengang wangstatic int ocfs2_test_suballoc_bit(struct ocfs2_super *osb, 28076ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang struct inode *suballoc, 2808889f004a8c83d515f275078687f859bc0d5ede9dTao Ma struct buffer_head *alloc_bh, 2809889f004a8c83d515f275078687f859bc0d5ede9dTao Ma u64 group_blkno, u64 blkno, 28106ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang u16 bit, int *res) 28116ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang{ 2812abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma struct ocfs2_dinode *alloc_di; 28136ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang struct ocfs2_group_desc *group; 28146ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang struct buffer_head *group_bh = NULL; 28156ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang u64 bg_blkno; 28166ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang int status; 28176ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 28182f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_test_suballoc_bit((unsigned long long)blkno, 28192f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma (unsigned int)bit); 28206ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 2821abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma alloc_di = (struct ocfs2_dinode *)alloc_bh->b_data; 2822abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma if ((bit + 1) > ocfs2_bits_per_group(&alloc_di->id2.i_chain)) { 28236ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mlog(ML_ERROR, "suballoc bit %u out of range of %u\n", 28246ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang (unsigned int)bit, 2825abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma ocfs2_bits_per_group(&alloc_di->id2.i_chain)); 28266ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang status = -EINVAL; 28276ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang goto bail; 28286ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang } 28296ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 2830889f004a8c83d515f275078687f859bc0d5ede9dTao Ma bg_blkno = group_blkno ? group_blkno : 2831889f004a8c83d515f275078687f859bc0d5ede9dTao Ma ocfs2_which_suballoc_group(blkno, bit); 2832abf1b3cb5b20fbad27ca9c7497235eeb4dd3f4fdTao Ma status = ocfs2_read_group_descriptor(suballoc, alloc_di, bg_blkno, 28336ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang &group_bh); 28346ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (status < 0) { 28355b09b507daaa882d888b6cd78ee89ba9caace44bJoel Becker mlog(ML_ERROR, "read group %llu failed %d\n", 28365b09b507daaa882d888b6cd78ee89ba9caace44bJoel Becker (unsigned long long)bg_blkno, status); 28376ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang goto bail; 28386ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang } 28396ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 28406ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang group = (struct ocfs2_group_desc *) group_bh->b_data; 28416ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang *res = ocfs2_test_bit(bit, (unsigned long *)group->bg_bitmap); 28426ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 28436ca497a83e592d64e050c4d04b6dedb8c915f39awengang wangbail: 28446ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang brelse(group_bh); 28456ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 2846c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 2847c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 28486ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang return status; 28496ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang} 28506ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 28516ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang/* 28526ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * Test if the bit representing this inode (blkno) is set in the 28536ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * suballocator. 28546ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * 28556ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * On success, 0 is returned and *res is 1 for SET; 0 otherwise. 28566ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * 28576ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * In the event of failure, a negative value is returned and *res is 28586ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * meaningless. 28596ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * 28606ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * Callers must make sure to hold nfs_sync_lock to prevent 28616ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * ocfs2_delete_inode() on another node from accessing the same 28626ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * suballocator concurrently. 28636ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang */ 28646ca497a83e592d64e050c4d04b6dedb8c915f39awengang wangint ocfs2_test_inode_bit(struct ocfs2_super *osb, u64 blkno, int *res) 28656ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang{ 28666ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang int status; 2867889f004a8c83d515f275078687f859bc0d5ede9dTao Ma u64 group_blkno = 0; 28686ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang u16 suballoc_bit = 0, suballoc_slot = 0; 28696ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang struct inode *inode_alloc_inode; 28706ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang struct buffer_head *alloc_bh = NULL; 28716ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 28722f73e135b83c5001dad84cbd1d445d23fd045b83Tao Ma trace_ocfs2_test_inode_bit((unsigned long long)blkno); 28736ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 28746ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang status = ocfs2_get_suballoc_slot_bit(osb, blkno, &suballoc_slot, 2875889f004a8c83d515f275078687f859bc0d5ede9dTao Ma &group_blkno, &suballoc_bit); 28766ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (status < 0) { 28776ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mlog(ML_ERROR, "get alloc slot and bit failed %d\n", status); 28786ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang goto bail; 28796ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang } 28806ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 28816ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang inode_alloc_inode = 28826ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, 28836ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang suballoc_slot); 28846ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (!inode_alloc_inode) { 28856ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang /* the error code could be inaccurate, but we are not able to 28866ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang * get the correct one. */ 28876ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang status = -EINVAL; 28886ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mlog(ML_ERROR, "unable to get alloc inode in slot %u\n", 28896ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang (u32)suballoc_slot); 28906ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang goto bail; 28916ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang } 28926ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 28936ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mutex_lock(&inode_alloc_inode->i_mutex); 28946ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang status = ocfs2_inode_lock(inode_alloc_inode, &alloc_bh, 0); 28956ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (status < 0) { 28966ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mutex_unlock(&inode_alloc_inode->i_mutex); 28977dc3e83901b342ea7fe36262329c3784f2937361jiangyiwen iput(inode_alloc_inode); 28986ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mlog(ML_ERROR, "lock on alloc inode on slot %u failed %d\n", 28996ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang (u32)suballoc_slot, status); 29006ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang goto bail; 29016ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang } 29026ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 29036ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang status = ocfs2_test_suballoc_bit(osb, inode_alloc_inode, alloc_bh, 2904889f004a8c83d515f275078687f859bc0d5ede9dTao Ma group_blkno, blkno, suballoc_bit, res); 29056ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang if (status < 0) 29066ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mlog(ML_ERROR, "test suballoc bit failed %d\n", status); 29076ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 29086ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang ocfs2_inode_unlock(inode_alloc_inode, 0); 29096ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang mutex_unlock(&inode_alloc_inode->i_mutex); 29106ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang 29116ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang iput(inode_alloc_inode); 29126ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang brelse(alloc_bh); 29136ca497a83e592d64e050c4d04b6dedb8c915f39awengang wangbail: 2914c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma if (status) 2915c1e8d35ef5ffb393b94a192034b5e3541e005d75Tao Ma mlog_errno(status); 29166ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang return status; 29176ca497a83e592d64e050c4d04b6dedb8c915f39awengang wang} 2918