[PATCH] md: Restore 'remaining' count when retrying an write operation

When retrying a write due to barrier failure, we don't reset 'remaining', so
it goes negative and never hits 0 again.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 04418e10d1dc..3cb0872a845d 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1402,6 +1402,9 @@ static void raid1d(mddev_t *mddev)
                         clear_bit(R1BIO_BarrierRetry, &r1_bio->state);
                         clear_bit(R1BIO_Barrier, &r1_bio->state);
                         for (i=0; i < conf->raid_disks; i++)
+                                if (r1_bio->bios[i])
+                                        atomic_inc(&r1_bio->remaining);
+                        for (i=0; i < conf->raid_disks; i++)
                                 if (r1_bio->bios[i]) {
                                         struct bio_vec *bvec;
                                         int j;