block: use bio_add_page in bio_iov_iter_get_pages

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Replace a nasty hack with a different nasty hack to prepare for multipage
bio_vecs.  By moving the temporary page array as far up as possible in
the space allocated for the bio_vec array we can iterate forward over it
and thus use bio_add_page.  Using bio_add_page means we'll be able to
merge physically contiguous pages once support for multipath bio_vecs is
merged.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2018-09-20 08:28:21 +02:00 • committed by Jens Axboe

parent c8765de0ad

commit 576ed91354

1 changed files with 20 additions and 21 deletions

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block/bio.c

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