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[PATCH] dm snapshot: fix metadata error handling

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Fix the error handling when store.read_metadata is called: the error should be
returned immediately.

Signed-off-by: Mark McLoughlin <[email protected]>
Signed-off-by: Alasdair G Kergon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Mark McLoughlin 2006-10-03 01:15:25 -07:00 • committed by Linus Torvalds
commit f9cea4f707
1 changed files with 5 additions and 12 deletions
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17
drivers/md/dm-snap.c
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@ -387,17 +387,6 @@ static inline ulong round_up(ulong n, ulong size)
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 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
}
/* 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 */