diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-06-26 15:49:21 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-06-29 17:47:31 +0200 |
| commit | d241a95f3514a5eb544dfd8d9d141ffd1c89b707 (patch) | |
| tree | 4e0545aab26f747bbe890cc9756dff3d276a2de6 /block | |
| parent | block: move the BIO_NO_PAGE_REF check into bio_release_pages (diff) | |
| download | linux-d241a95f3514a5eb544dfd8d9d141ffd1c89b707.tar.xz linux-d241a95f3514a5eb544dfd8d9d141ffd1c89b707.zip | |
block: optionally mark pages dirty in bio_release_pages
A lot of callers of bio_release_pages also want to mark the released
pages as dirty. Add a mark_dirty parameter to avoid a second
relatively expensive bio_for_each_segment_all loop.
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/bio.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/block/bio.c b/block/bio.c index b35356c6093b..8a7b315630ce 100644 --- a/block/bio.c +++ b/block/bio.c @@ -845,7 +845,7 @@ static void bio_get_pages(struct bio *bio) get_page(bvec->bv_page); } -void bio_release_pages(struct bio *bio) +void bio_release_pages(struct bio *bio, bool mark_dirty) { struct bvec_iter_all iter_all; struct bio_vec *bvec; @@ -853,8 +853,11 @@ void bio_release_pages(struct bio *bio) if (bio_flagged(bio, BIO_NO_PAGE_REF)) return; - bio_for_each_segment_all(bvec, bio, iter_all) + bio_for_each_segment_all(bvec, bio, iter_all) { + if (mark_dirty && !PageCompound(bvec->bv_page)) + set_page_dirty_lock(bvec->bv_page); put_page(bvec->bv_page); + } } static int __bio_iov_bvec_add_pages(struct bio *bio, struct iov_iter *iter) @@ -1683,8 +1686,7 @@ static void bio_dirty_fn(struct work_struct *work) while ((bio = next) != NULL) { next = bio->bi_private; - bio_set_pages_dirty(bio); - bio_release_pages(bio); + bio_release_pages(bio, true); bio_put(bio); } } @@ -1700,7 +1702,7 @@ void bio_check_pages_dirty(struct bio *bio) goto defer; } - bio_release_pages(bio); + bio_release_pages(bio, false); bio_put(bio); return; defer: |