diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2011-08-02 12:32:00 +0100 |
|---|---|---|
| committer | Jonas ABERG <jonas.aberg@stericsson.com> | 2011-10-28 11:16:58 +0200 |
| commit | e45beaf693e4d0923a28569f995dbacbf915265d (patch) | |
| tree | 41393ae1c528419e0838247089203aa8af1582c1 | |
| parent | 809a5aaf90d6468f67380f4e762b32495a524dcb (diff) | |
dm snapshot: flush disk cache when merging
commit 762a80d9fc9f690a3a35983f3b4619a220650808 upstream.
This patch makes dm-snapshot flush disk cache when writing metadata for
merging snapshot.
Without cache flushing the disk may reorder metadata write and other
data writes and there is a possibility of data corruption in case of
power fault.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Change-Id: Iea48c7db57774e0e0b841a42c67ddd7e1f2fad62
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35678
Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
| -rw-r--r-- | drivers/md/dm-snap-persistent.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c index 135c2f1fdbf..e4ecadf0548 100644 --- a/drivers/md/dm-snap-persistent.c +++ b/drivers/md/dm-snap-persistent.c @@ -753,7 +753,7 @@ static int persistent_commit_merge(struct dm_exception_store *store, for (i = 0; i < nr_merged; i++) clear_exception(ps, ps->current_committed - 1 - i); - r = area_io(ps, WRITE); + r = area_io(ps, WRITE_FLUSH_FUA); if (r < 0) return r; |