block: bio: pass bvec table to bio_init()
Some drivers often use external bvec table, so introduce
this helper for this case. It is always safe to access the
bio->bi_io_vec in this way for this case.
After converting to this usage, it will becomes a bit easier
to evaluate the remaining direct access to bio->bi_io_vec,
so it can help to prepare for the following multipage bvec
support.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Fixed up the new O_DIRECT cases.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 0d99b5f..f49c541 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -623,7 +623,7 @@ static void do_bio_hook(struct search *s, struct bio *orig_bio)
{
struct bio *bio = &s->bio.bio;
- bio_init(bio);
+ bio_init(bio, NULL, 0);
__bio_clone_fast(bio, orig_bio);
bio->bi_end_io = request_endio;
bio->bi_private = &s->cl;