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authorYu Kuai <yukuai3@huawei.com>2024-05-09 20:38:25 +0800
committerJens Axboe <axboe@kernel.dk>2024-05-09 07:57:37 -0600
commit060406c61c7cb4bbd82a02d179decca9c9bb3443 (patch)
treeb61bd7831d1740ac42c26dc78c38b3bc28772dea
parent3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31 (diff)
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.c6
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;
}