osc_internal.h revision c52f69c57885d9414e1fe7a0d879f9bff5868579
1/* 2 * GPL HEADER START 3 * 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 only, 8 * as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License version 2 for more details (a copy is included 14 * in the LICENSE file that accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License 17 * version 2 along with this program; If not, see 18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf 19 * 20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 21 * CA 95054 USA or visit www.sun.com if you need additional information or 22 * have any questions. 23 * 24 * GPL HEADER END 25 */ 26/* 27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 28 * Use is subject to license terms. 29 * 30 * Copyright (c) 2011, 2012, Intel Corporation. 31 */ 32/* 33 * This file is part of Lustre, http://www.lustre.org/ 34 * Lustre is a trademark of Sun Microsystems, Inc. 35 */ 36 37#ifndef OSC_INTERNAL_H 38#define OSC_INTERNAL_H 39 40#define OAP_MAGIC 8675309 41 42struct lu_env; 43 44enum async_flags { 45 ASYNC_READY = 0x1, /* ap_make_ready will not be called before this 46 page is added to an rpc */ 47 ASYNC_URGENT = 0x2, /* page must be put into an RPC before return */ 48 ASYNC_COUNT_STABLE = 0x4, /* ap_refresh_count will not be called 49 to give the caller a chance to update 50 or cancel the size of the io */ 51 ASYNC_HP = 0x10, 52}; 53 54struct osc_async_page { 55 int oap_magic; 56 unsigned short oap_cmd; 57 unsigned short oap_interrupted:1; 58 59 struct list_head oap_pending_item; 60 struct list_head oap_rpc_item; 61 62 obd_off oap_obj_off; 63 unsigned oap_page_off; 64 enum async_flags oap_async_flags; 65 66 struct brw_page oap_brw_page; 67 68 struct ptlrpc_request *oap_request; 69 struct client_obd *oap_cli; 70 struct osc_object *oap_obj; 71 72 struct ldlm_lock *oap_ldlm_lock; 73 spinlock_t oap_lock; 74}; 75 76#define oap_page oap_brw_page.pg 77#define oap_count oap_brw_page.count 78#define oap_brw_flags oap_brw_page.flag 79 80struct osc_cache_waiter { 81 struct list_head ocw_entry; 82 wait_queue_head_t ocw_waitq; 83 struct osc_async_page *ocw_oap; 84 int ocw_grant; 85 int ocw_rc; 86}; 87 88int osc_create(const struct lu_env *env, struct obd_export *exp, 89 struct obdo *oa, struct lov_stripe_md **ea, 90 struct obd_trans_info *oti); 91int osc_real_create(struct obd_export *exp, struct obdo *oa, 92 struct lov_stripe_md **ea, struct obd_trans_info *oti); 93void osc_wake_cache_waiters(struct client_obd *cli); 94int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes); 95void osc_update_next_shrink(struct client_obd *cli); 96 97/* 98 * cl integration. 99 */ 100#include <cl_object.h> 101 102extern struct ptlrpc_request_set *PTLRPCD_SET; 103 104int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id, 105 __u64 *flags, ldlm_policy_data_t *policy, 106 struct ost_lvb *lvb, int kms_valid, 107 obd_enqueue_update_f upcall, 108 void *cookie, struct ldlm_enqueue_info *einfo, 109 struct lustre_handle *lockh, 110 struct ptlrpc_request_set *rqset, int async, int agl); 111int osc_cancel_base(struct lustre_handle *lockh, __u32 mode); 112 113int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id, 114 __u32 type, ldlm_policy_data_t *policy, __u32 mode, 115 int *flags, void *data, struct lustre_handle *lockh, 116 int unref); 117 118int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo, 119 struct obd_trans_info *oti, 120 obd_enqueue_update_f upcall, void *cookie, 121 struct ptlrpc_request_set *rqset); 122int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo, 123 obd_enqueue_update_f upcall, void *cookie, 124 struct ptlrpc_request_set *rqset); 125int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo, 126 obd_enqueue_update_f upcall, void *cookie, 127 struct ptlrpc_request_set *rqset); 128 129int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *cfg); 130int osc_build_rpc(const struct lu_env *env, struct client_obd *cli, 131 struct list_head *ext_list, int cmd, pdl_policy_t p); 132int osc_lru_shrink(struct client_obd *cli, int target); 133 134extern spinlock_t osc_ast_guard; 135 136int osc_cleanup(struct obd_device *obd); 137int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg); 138 139#ifdef LPROCFS 140int lproc_osc_attach_seqstat(struct obd_device *dev); 141void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars); 142#else 143static inline int lproc_osc_attach_seqstat(struct obd_device *dev) {return 0;} 144static inline void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars) 145{ 146 memset(lvars, 0, sizeof(*lvars)); 147} 148#endif 149 150extern struct lu_device_type osc_device_type; 151 152static inline int osc_recoverable_error(int rc) 153{ 154 return (rc == -EIO || rc == -EROFS || rc == -ENOMEM || 155 rc == -EAGAIN || rc == -EINPROGRESS); 156} 157 158static inline unsigned long rpcs_in_flight(struct client_obd *cli) 159{ 160 return cli->cl_r_in_flight + cli->cl_w_in_flight; 161} 162 163#ifndef min_t 164#define min_t(type,x,y) \ 165 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) 166#endif 167 168struct osc_device { 169 struct cl_device od_cl; 170 struct obd_export *od_exp; 171 172 /* Write stats is actually protected by client_obd's lock. */ 173 struct osc_stats { 174 uint64_t os_lockless_writes; /* by bytes */ 175 uint64_t os_lockless_reads; /* by bytes */ 176 uint64_t os_lockless_truncates; /* by times */ 177 } od_stats; 178 179 /* configuration item(s) */ 180 int od_contention_time; 181 int od_lockless_truncate; 182}; 183 184static inline struct osc_device *obd2osc_dev(const struct obd_device *d) 185{ 186 return container_of0(d->obd_lu_dev, struct osc_device, od_cl.cd_lu_dev); 187} 188 189int osc_dlm_lock_pageref(struct ldlm_lock *dlm); 190 191extern struct kmem_cache *osc_quota_kmem; 192struct osc_quota_info { 193 /** linkage for quota hash table */ 194 struct hlist_node oqi_hash; 195 obd_uid oqi_id; 196}; 197int osc_quota_setup(struct obd_device *obd); 198int osc_quota_cleanup(struct obd_device *obd); 199int osc_quota_setdq(struct client_obd *cli, const unsigned int qid[], 200 obd_flag valid, obd_flag flags); 201int osc_quota_chkdq(struct client_obd *cli, const unsigned int qid[]); 202int osc_quotactl(struct obd_device *unused, struct obd_export *exp, 203 struct obd_quotactl *oqctl); 204int osc_quotacheck(struct obd_device *unused, struct obd_export *exp, 205 struct obd_quotactl *oqctl); 206int osc_quota_poll_check(struct obd_export *exp, struct if_quotacheck *qchk); 207 208#endif /* OSC_INTERNAL_H */ 209