xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

block: bio: pass bvec table to bio_init()

Browse Source 
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>
This commit is contained in:
Ming Lei
2016-11-22 08:57:21 -07:00
committed by Jens Axboe
parent 9a794fb9bd
commit 3a83f46775
17 changed files with 28 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/bio.h
View File

@@ -420,7 +420,8 @@ extern int bio_phys_segments(struct request_queue *, struct bio *);
extern int submit_bio_wait(struct bio *bio);
extern void bio_advance(struct bio *, unsigned);
extern void bio_init(struct bio *);
extern void bio_init(struct bio *bio, struct bio_vec *table,
unsigned short max_vecs);
extern void bio_reset(struct bio *);
void bio_chain(struct bio *, struct bio *);