From: Ming Lei <ming.lei@xxxxxxxxxx>
[ Upstream commit cb9516be7708a2a18ec0a19fe3a225b5b3bc92c7 ]
Commit 6e6fcbc27e77 ("blk-mq: support batching dispatch in case of io")
starts to support io batching submission by using hctx->dispatch_busy.
However, blk_mq_update_dispatch_busy() isn't changed to update hctx->dispatch_busy
in that commit, so fix the issue by updating hctx->dispatch_busy in case
of real scheduler.
Reported-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Fixes: 6e6fcbc27e77 ("blk-mq: support batching dispatch in case of io")
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210625020248.1630497-1-ming.lei@xxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
block/blk-mq.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 00d6ed2fe812..a368eb6dc647 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1242,9 +1242,6 @@ static void blk_mq_update_dispatch_busy(struct blk_mq_hw_ctx *hctx, bool busy)
{
unsigned int ewma;
- if (hctx->queue->elevator)
- return;
-
ewma = hctx->dispatch_busy;
if (!ewma && !busy)
--
2.30.2
