Commit ab7a30c7 authored by NeilBrown's avatar NeilBrown Committed by Linus Torvalds

[PATCH] md: fix bug when raid1 attempts a partial reconstruct.

The logic here is wrong.  if fullsync is 0, it WILL BUG.
Signed-off-by: default avatarNeil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 191ea9b2
......@@ -1237,13 +1237,16 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
len = (max_sector - sector_nr) << 9;
if (len == 0)
break;
if (!conf->fullsync && sync_blocks == 0)
if (!bitmap_start_sync(mddev->bitmap,
sector_nr, &sync_blocks))
break;
if (sync_blocks < (PAGE_SIZE>>9))
BUG();
if (len > (sync_blocks<<9)) len = sync_blocks<<9;
if (!conf->fullsync) {
if (sync_blocks == 0) {
if (!bitmap_start_sync(mddev->bitmap,
sector_nr, &sync_blocks))
break;
if (sync_blocks < (PAGE_SIZE>>9))
BUG();
if (len > (sync_blocks<<9)) len = sync_blocks<<9;
}
}
for (i=0 ; i < conf->raid_disks; i++) {
bio = r1_bio->bios[i];
......
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