PWN-Hunter/android_kernel_xiaomi_sdm845
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[PATCH] md: fix bug when raid1 attempts a partial reconstruct.

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The logic here is wrong.  if fullsync is 0, it WILL BUG.

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>
This commit is contained in:
NeilBrown 2005-06-21 17:17:23 -07:00 committed by Linus Torvalds
parent 191ea9b2c7
commit ab7a30c705
1 changed files with 10 additions and 7 deletions
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5
drivers/md/raid1.c
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@ -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 (!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];