Commit cb9516be authored by Ming Lei's avatar Ming Lei Committed by Jens Axboe
Browse files

blk-mq: update hctx->dispatch_busy in case of real scheduler 



Commit 6e6fcbc2 ("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: default avatarJan Kara <jack@suse.cz>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Fixes: 6e6fcbc2 ("blk-mq: support batching dispatch in case of io")
Signed-off-by: default avatarMing Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20210625020248.1630497-1-ming.lei@redhat.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent fd2ef39c

block/blk-mq.c

+0 −3
Original line number Diff line number Diff line
@@ -1224,9 +1224,6 @@ 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)