[PATCH] dm snapshot: fix metadata error handling
Fix the error handling when store.read_metadata is called: the error should be
returned immediately.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 89f8dd1..58c444f 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -387,17 +387,6 @@
return (n + size) & ~size;
}
-static void read_snapshot_metadata(struct dm_snapshot *s)
-{
- if (s->store.read_metadata(&s->store)) {
- down_write(&s->lock);
- s->valid = 0;
- up_write(&s->lock);
-
- dm_table_event(s->table);
- }
-}
-
static int set_chunk_size(struct dm_snapshot *s, const char *chunk_size_arg,
char **error)
{
@@ -528,7 +517,11 @@
}
/* Metadata must only be loaded into one table at once */
- read_snapshot_metadata(s);
+ r = s->store.read_metadata(&s->store);
+ if (r) {
+ ti->error = "Failed to read snapshot metadata";
+ goto bad6;
+ }
/* Add snapshot to the list of snapshots for this origin */
/* Exceptions aren't triggered till snapshot_resume() is called */