md/raid1: use bio_clone_bioset_partial() in case of write behind

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Write behind need to replace pages in bio's bvecs, and we have
to clone a fresh bio with new bvec table, so use the introduced
bio_clone_bioset_partial() for it.

For other bio_clone_mddev() cases, we will use fast clone since
they don't need to touch bvec table.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Shaohua Li <shli@fb.com>

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Ming Lei 2017-02-14 23:29:01 +08:00 • committed by Shaohua Li

parent 10273170fd

commit 8e58e327e2

1 changed files with 15 additions and 5 deletions

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drivers/md/raid1.c

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