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dm snapshot: store pointer to target instance

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Save pointer to dm_target in dm_snapshot structure.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Mikulas Patocka
2008-04-24 21:43:11 +01:00
committed by Alasdair G Kergon
parent 769aef30f0
commit 72727bad54
2 changed files with 4 additions and 4 deletions
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drivers/md/dm-snap.c
+3 -3
View File
@@ -536,7 +536,7 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
s->last_percent = 0; s->last_percent = 0;
init_rwsem(&s->lock); init_rwsem(&s->lock);
spin_lock_init(&s->pe_lock); spin_lock_init(&s->pe_lock);
s->table = ti->table; s->ti = ti;
/* Allocate hash table for COW data */ /* Allocate hash table for COW data */
if (init_hash_tables(s)) { if (init_hash_tables(s)) {
@@ -699,7 +699,7 @@ static void __invalidate_snapshot(struct dm_snapshot *s, int err)
s->valid = 0; s->valid = 0;
dm_table_event(s->table); dm_table_event(s->ti->table);
} }
static void get_pending_exception(struct dm_snap_pending_exception *pe) static void get_pending_exception(struct dm_snap_pending_exception *pe)
@@ -1060,7 +1060,7 @@ static int __origin_write(struct list_head *snapshots, struct bio *bio)
goto next_snapshot; goto next_snapshot;
/* Nothing to do if writing beyond end of snapshot */ /* Nothing to do if writing beyond end of snapshot */
if (bio->bi_sector >= dm_table_get_size(snap->table)) if (bio->bi_sector >= dm_table_get_size(snap->ti->table))
goto next_snapshot; goto next_snapshot;
/* /*
drivers/md/dm-snap.h
+1 -1
View File
@@ -132,7 +132,7 @@ struct exception_store {
struct dm_snapshot { struct dm_snapshot {
struct rw_semaphore lock; struct rw_semaphore lock;
struct dm_table *table; struct dm_target *ti;
struct dm_dev *origin; struct dm_dev *origin;
struct dm_dev *cow; struct dm_dev *cow;