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| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-04-02 20:55:36 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-04-02 20:55:36 +0200 |
| commit | 99c75e3130cff0c869c657ee97fb4a68958eeffc (patch) | |
| tree | cd3aaee7a0aeab15a3cc345046ef2020e62f21cd /drivers/md | |
| parent | dm snapshot: persistent fix dtr cleanup (diff) | |
| download | linux-99c75e3130cff0c869c657ee97fb4a68958eeffc.tar.xz linux-99c75e3130cff0c869c657ee97fb4a68958eeffc.zip | |
dm: bio list add bio_list_add_head
Introduce a function that adds a bio to the head of the list for
use by the patch that will support barriers.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-bio-list.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/md/dm-bio-list.h b/drivers/md/dm-bio-list.h index d4509be0fe67..345098b4ca77 100644 --- a/drivers/md/dm-bio-list.h +++ b/drivers/md/dm-bio-list.h @@ -52,6 +52,16 @@ static inline void bio_list_add(struct bio_list *bl, struct bio *bio) bl->tail = bio; } +static inline void bio_list_add_head(struct bio_list *bl, struct bio *bio) +{ + bio->bi_next = bl->head; + + bl->head = bio; + + if (!bl->tail) + bl->tail = bio; +} + static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2) { if (!bl2->head) |