Cross Reference: /drivers/md/dm-snap-persistent.c

Lines Matching refs:store
8 #include "dm-exception-store.h"
29  * We need to store a record of which parts of the origin have
32  * of the COW store.  It makes sense therefore, to store the
99  * The top level structure for a persistent exception store.
102 	struct dm_exception_store *store;
138 	 * the exception store because chunks can be committed out of
171 	len = ps->store->chunk_size << SECTOR_SHIFT;
237 		.bdev = dm_snap_cow(ps->store->snap)->bdev,
238 		.sector = ps->store->chunk_size * chunk,
239 		.count = ps->store->chunk_size,
304 	memset(ps->area, 0, ps->store->chunk_size << SECTOR_SHIFT);
324 	if (!ps->store->chunk_size) {
325 		ps->store->chunk_size = max(DM_CHUNK_SIZE_DEFAULT_SECTORS,
326 		    bdev_logical_block_size(dm_snap_cow(ps->store->snap)->
328 		ps->store->chunk_mask = ps->store->chunk_size - 1;
329 		ps->store->chunk_shift = ffs(ps->store->chunk_size) - 1;
363 	if (ps->store->chunk_size == chunk_size)
369 		       chunk_size, ps->store->chunk_size);
374 	r = dm_exception_store_set_chunk_size(ps->store, chunk_size,
394 	memset(ps->header_area, 0, ps->store->chunk_size << SECTOR_SHIFT);
400 	dh->chunk_size = cpu_to_le32(ps->store->chunk_size);
504 	client = dm_bufio_client_create(dm_snap_cow(ps->store->snap)->bdev,
505 					ps->store->chunk_size << SECTOR_SHIFT,
550 			memcpy(ps->area, area, ps->store->chunk_size << SECTOR_SHIFT);
572 static struct pstore *get_info(struct dm_exception_store *store)
574 	return (struct pstore *) store->context;
577 static void persistent_usage(struct dm_exception_store *store,
582 	struct pstore *ps = get_info(store);
584 	*sectors_allocated = ps->next_free * store->chunk_size;
585 	*total_sectors = get_dev_size(dm_snap_cow(store->snap)->bdev);
593 			    store->chunk_size;
596 static void persistent_dtr(struct dm_exception_store *store)
598 	struct pstore *ps = get_info(store);
614 static int persistent_read_metadata(struct dm_exception_store *store,
620 	struct pstore *ps = get_info(store);
632 	ps->exceptions_per_area = (ps->store->chunk_size << SECTOR_SHIFT) /
679 static int persistent_prepare_exception(struct dm_exception_store *store,
682 	struct pstore *ps = get_info(store);
683 	sector_t size = get_dev_size(dm_snap_cow(store->snap)->bdev);
686 	if (size < ((ps->next_free + 1) * store->chunk_size))
702 static void persistent_commit_exception(struct dm_exception_store *store,
708 	struct pstore *ps = get_info(store);
764 static int persistent_prepare_merge(struct dm_exception_store *store,
768 	struct pstore *ps = get_info(store);
810 static int persistent_commit_merge(struct dm_exception_store *store,
814 	struct pstore *ps = get_info(store);
843 static void persistent_drop_snapshot(struct dm_exception_store *store)
845 	struct pstore *ps = get_info(store);
852 static int persistent_ctr(struct dm_exception_store *store,
862 	ps->store = store;
882 	store->context = ps;
887 static unsigned persistent_status(struct dm_exception_store *store,
897 		DMEMIT(" P %llu", (unsigned long long)store->chunk_size);
939 		DMERR("Unable to register persistent exception store type");
946 		      "store type");