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block: move the BIO_NO_PAGE_REF check into bio_release_pages

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Move the BIO_NO_PAGE_REF check into bio_release_pages instead of
duplicating it in both callers.

Also make the function available outside of bio.c so that we can
reuse it in other direct I/O implementations.

Reviewed-by: Minwoo Im <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig 2019-06-26 15:49:20 +02:00 • committed by Jens Axboe
commit b2d0d99135
2 changed files with 7 additions and 5 deletions
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11
block/bio.c
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@ -845,11 +845,14 @@ static void bio_get_pages(struct bio *bio)
get_page(bvec->bv_page);
}
static void bio_release_pages(struct bio *bio)
void bio_release_pages(struct bio *bio)
{
struct bvec_iter_all iter_all;
struct bio_vec *bvec;
if (bio_flagged(bio, BIO_NO_PAGE_REF))
return;
bio_for_each_segment_all(bvec, bio, iter_all)
put_page(bvec->bv_page);
}
@ -1681,8 +1684,7 @@ static void bio_dirty_fn(struct work_struct *work)
next = bio->bi_private;
bio_set_pages_dirty(bio);
if (!bio_flagged(bio, BIO_NO_PAGE_REF))
bio_release_pages(bio);
bio_release_pages(bio);
bio_put(bio);
}
}
@ -1698,8 +1700,7 @@ void bio_check_pages_dirty(struct bio *bio)
goto defer;
}
if (!bio_flagged(bio, BIO_NO_PAGE_REF))
bio_release_pages(bio);
bio_release_pages(bio);
bio_put(bio);
return;
defer: