block: bio: pass bvec table to bio_init()

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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>

...

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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

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include/linux/bio.h

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