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authorJonathan Brassow <jbrassow@redhat.com>2009-01-06 03:05:19 +0000
committerAlasdair G Kergon <agk@redhat.com>2009-01-06 03:05:19 +0000
commita159c1ac5f33c6cf0f5aa3c9d1ccdc82c907ee46 (patch)
tree2cb6bfd3f376e2366f3e3820ebd07a0a86a01cfc /drivers/md/dm-snap.c
parent4db6bfe02bdc7dc5048f46dd682a94801d029adc (diff)
dm snapshot: extend exception store functions
Supply dm_add_exception as a callback to the read_metadata function. Add a status function ready for a later patch and name the functions consistently. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-snap.c')
-rw-r--r--drivers/md/dm-snap.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 018b567fc75..65ff82ff124 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -430,8 +430,13 @@ out:
list_add(&new_e->hash_list, e ? &e->hash_list : l);
}
-int dm_add_exception(struct dm_snapshot *s, chunk_t old, chunk_t new)
+/*
+ * Callback used by the exception stores to load exceptions when
+ * initialising.
+ */
+static int dm_add_exception(void *context, chunk_t old, chunk_t new)
{
+ struct dm_snapshot *s = context;
struct dm_snap_exception *e;
e = alloc_exception();
@@ -660,7 +665,7 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
spin_lock_init(&s->tracked_chunk_lock);
/* Metadata must only be loaded into one table at once */
- r = s->store.read_metadata(&s->store);
+ r = s->store.read_metadata(&s->store, dm_add_exception, (void *)s);
if (r < 0) {
ti->error = "Failed to read snapshot metadata";
goto bad_load_and_register;