bio: add a helper calculating nr segments to alloc

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Add a helper function calculating the number of bvec segments we need to
allocate to construct a bio. It doesn't change anything functionally,
but will be used to not duplicate special cases in the future.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-01-09 16:03:02 +00:00 • committed by Jens Axboe

parent 54c8195b4e

commit 3e1a88ec96

3 changed files with 18 additions and 8 deletions

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include/linux/bio.h

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