redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

md: handle writes to broken raid10 arrays gracefully 

When writing to a broken array, raid10 currently happily emits empty bio
lists.  IOW, the master bio will never be completed, sending writers to
UNINTERRUPTIBLE_SLEEP forever.

Signed-off-by: Arne Redlich <agr@powerkom-dd.de>
Acked-by: Neil Brown <neilb@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Arne Redlich 2007-07-31 00:37:57 -07:00 committed by Linus Torvalds
parent 14e713446a
commit f6f953aa99
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/md/raid10.c
View File

@ -917,6 +917,13 @@ static int make_request(struct request_queue *q, struct bio * bio)
bio_list_add(&bl, mbio);
}
if (unlikely(!atomic_read(&r10_bio->remaining))) {
/* the array is dead */
md_write_end(mddev);
raid_end_bio_io(r10_bio);
return 0;
}
bitmap_startwrite(mddev->bitmap, bio->bi_sector, r10_bio->sectors, 0);
spin_lock_irqsave(&conf->device_lock, flags);
bio_list_merge(&conf->pending_bio_list, &bl);