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>
This commit is contained in:
parent
a32079ce17
commit
99c75e3130
|
@ -52,6 +52,16 @@ static inline void bio_list_add(struct bio_list *bl, struct bio *bio)
|
||||||
bl->tail = 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)
|
static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)
|
||||||
{
|
{
|
||||||
if (!bl2->head)
|
if (!bl2->head)
|
||||||
|
|
Reference in New Issue