Ming Lei 3a83f46775
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 >
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3a83f46775