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| author | Yu Kuai <yukuai3@huawei.com> | 2024-05-09 20:38:25 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-05-09 07:57:37 -0600 |
| commit | 060406c61c7cb4bbd82a02d179decca9c9bb3443 (patch) | |
| tree | b61bd7831d1740ac42c26dc78c38b3bc28772dea | |
| parent | 3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31 (diff) | |
| download | linux-stable-060406c61c7cb4bbd82a02d179decca9c9bb3443.tar.gz linux-stable-060406c61c7cb4bbd82a02d179decca9c9bb3443.tar.bz2 linux-stable-060406c61c7cb4bbd82a02d179decca9c9bb3443.zip | |
block: add plug while submitting IO
So that if caller didn't use plug, for example, __blkdev_direct_IO_simple()
and __blkdev_direct_IO_async(), block layer can still benefit from caching
nsec time in the plug.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240509123825.3225207-1-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 47400a4fe851..8efee8faa4b6 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -646,11 +646,13 @@ static void __submit_bio(struct bio *bio) static void __submit_bio_noacct(struct bio *bio) { struct bio_list bio_list_on_stack[2]; + struct blk_plug plug; BUG_ON(bio->bi_next); bio_list_init(&bio_list_on_stack[0]); current->bio_list = bio_list_on_stack; + blk_start_plug(&plug); do { struct request_queue *q = bdev_get_queue(bio->bi_bdev); @@ -684,19 +686,23 @@ static void __submit_bio_noacct(struct bio *bio) bio_list_merge(&bio_list_on_stack[0], &bio_list_on_stack[1]); } while ((bio = bio_list_pop(&bio_list_on_stack[0]))); + blk_finish_plug(&plug); current->bio_list = NULL; } static void __submit_bio_noacct_mq(struct bio *bio) { struct bio_list bio_list[2] = { }; + struct blk_plug plug; current->bio_list = bio_list; + blk_start_plug(&plug); do { __submit_bio(bio); } while ((bio = bio_list_pop(&bio_list[0]))); + blk_finish_plug(&plug); current->bio_list = NULL; } |