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| author |   jblunck@suse.de <jblunck@suse.de> | 2005-11-21 21:32:36 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-22 09:14:31 -0800 |
| commit | 233886dd32ad71daf9c21bf3728c0933a94870f0 (patch) | |
| tree | 4c60f5639c0983a76a43f51917868bce48acc4f9 | |
| parent | [PATCH] device-mapper dm-mpath: endio spinlock fix (diff) | |
| download | linux-dev-233886dd32ad71daf9c21bf3728c0933a94870f0.tar.xz linux-dev-233886dd32ad71daf9c21bf3728c0933a94870f0.zip | |
[PATCH] device-mapper snapshot: bio_list fix
bio_list_merge() should do nothing if the second list is empty - not oops.
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/md/dm-bio-list.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/dm-bio-list.h b/drivers/md/dm-bio-list.h index bc021e1fd4d1..bbf4615f0e30 100644 --- a/drivers/md/dm-bio-list.h +++ b/drivers/md/dm-bio-list.h @@ -33,6 +33,9 @@ static inline void bio_list_add(struct bio_list *bl, struct bio *bio) static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2) { + if (!bl2->head) + return; + if (bl->tail) bl->tail->bi_next = bl2->head; else |