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| author |   Ming Lei <ming.lei@redhat.com> | 2021-12-03 16:17:03 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-12-03 06:36:28 -0700 |
| commit | 2385ebf38f94d4f7761b1e9a4973d04753da02c2 (patch) | |
| tree | d65257b171cf5644fa5e87a4949248815c364cae /drivers/block | |
| parent | floppy: Add max size check for user space request (diff) | |
| download | linux-dev-2385ebf38f94d4f7761b1e9a4973d04753da02c2.tar.xz linux-dev-2385ebf38f94d4f7761b1e9a4973d04753da02c2.zip | |
block: null_blk: batched complete poll requests
Complete poll requests via blk_mq_add_to_batch() and
blk_mq_end_request_batch(), so that we can cover batched complete
code path by running null_blk test.
Meantime this way shows ~14% IOPS boost on 't/io_uring /dev/nullb0'
in my test.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20211203081703.3506020-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/null_blk/main.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index b4ff5ae1f70c..20534a2daf17 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -1574,7 +1574,9 @@ static int null_poll(struct blk_mq_hw_ctx *hctx, struct io_comp_batch *iob) cmd = blk_mq_rq_to_pdu(req); cmd->error = null_process_cmd(cmd, req_op(req), blk_rq_pos(req), blk_rq_sectors(req)); - end_cmd(cmd); + if (!blk_mq_add_to_batch(req, iob, cmd->error, + blk_mq_end_request_batch)) + end_cmd(cmd); nr++; } |