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block: allow bio_for_each_segment_all() to iterate over multi-page bvec

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This patch introduces one extra iterator variable to bio_for_each_segment_all(),
then we can allow bio_for_each_segment_all() to iterate over multi-page bvec.

Given it is just one mechannical & simple change on all bio_for_each_segment_all()
users, this patch does tree-wide change in one single patch, so that we can
avoid to use a temporary helper for this conversion.

Reviewed-by: Omar Sandoval <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Ming Lei <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Ming Lei 2019-02-15 19:13:19 +08:00 • committed by Jens Axboe
commit 6dc4f100c1
27 changed files with 127 additions and 46 deletions
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3
fs/mpage.c
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@ -48,8 +48,9 @@ static void mpage_end_io(struct bio *bio)
{
struct bio_vec *bv;
int i;
struct bvec_iter_all iter_all;
bio_for_each_segment_all(bv, bio, i) {
bio_for_each_segment_all(bv, bio, i, iter_all) {
struct page *page = bv->bv_page;
page_endio(page, bio_op(bio),
blk_status_to_errno(bio->bi_status));