[PATCH] md: initialise sync_blocks in raid1 resync

Otherwise it could have a random value and might BUG.  This fixes a BUG
during resync problem in raid1 introduced by the bitmap-based-intent-loggin
patches.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 9d9acc3e51a7..c3b4772cfaea 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1230,6 +1230,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
         }
 
         nr_sectors = 0;
+        sync_blocks = 0;
         do {
                 struct page *page;
                 int len = PAGE_SIZE;