aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorKundan Kumar2023-11-24 00:33:31 +0530
committerJens Axboe2023-12-01 18:29:18 -0700
commit847c5bcdfb41704e52930783b028302f415a3209 (patch)
tree5d4f1b58567dfda825648d621c88be920555693d
parent8fadb86d4ced8b8349a3b227d6d66736ff150819 (diff)
block: skip QUEUE_FLAG_STATS and rq-qos for passthrough io
Write-back throttling (WBT) enables QUEUE_FLAG_STATS on the request queue. But WBT does not make sense for passthrough io, so skip QUEUE_FLAG_STATS processing. Also skip rq_qos_issue/done for passthrough io. Overall, the change gives ~11% hike in peak performance. Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com> Signed-off-by: Kanchan Joshi <joshi.k@samsung.com> Link: https://lore.kernel.org/r/20231123190331.7934-1-kundan.kumar@samsung.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--block/blk-mq.c3
-rw-r--r--block/blk-rq-qos.h2
2 files changed, 3 insertions, 2 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 900c1be1fee1..fb29ff5cc281 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1248,7 +1248,8 @@ void blk_mq_start_request(struct request *rq)
trace_block_rq_issue(rq);
- if (test_bit(QUEUE_FLAG_STATS, &q->queue_flags)) {
+ if (test_bit(QUEUE_FLAG_STATS, &q->queue_flags) &&
+ !blk_rq_is_passthrough(rq)) {
rq->io_start_time_ns = ktime_get_ns();
rq->stats_sectors = blk_rq_sectors(rq);
rq->rq_flags |= RQF_STATS;
diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h
index f48ee150d667..37245c97ee61 100644
--- a/block/blk-rq-qos.h
+++ b/block/blk-rq-qos.h
@@ -118,7 +118,7 @@ static inline void rq_qos_cleanup(struct request_queue *q, struct bio *bio)
static inline void rq_qos_done(struct request_queue *q, struct request *rq)
{
- if (q->rq_qos)
+ if (q->rq_qos && !blk_rq_is_passthrough(rq))
__rq_qos_done(q->rq_qos, rq);
}