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dm raid1: fix immutable biovec related BUG when retrying read bio 

When restoring bi_end_io, increase bi_remaining before retrying the bio
to avoid BUG_ON(atomic_read(&bio->bi_remaining) <= 0) in bio_endio().

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mikulas Patocka 2014-02-18 09:57:22 -05:00 committed by Mike Snitzer
parent d73f990729
commit f3a44fe060
1 changed files with 3 additions and 0 deletions
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3
drivers/md/dm-raid1.c
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@ -1244,6 +1244,9 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, int error)
dm_bio_restore(bd, bio); dm_bio_restore(bd, bio);
bio_record->details.bi_bdev = NULL; bio_record->details.bi_bdev = NULL;
atomic_inc(&bio->bi_remaining);
queue_bio(ms, bio, rw); queue_bio(ms, bio, rw);
return DM_ENDIO_INCOMPLETE; return DM_ENDIO_INCOMPLETE;
} }