| From 3a58ae0d787019727ab82e40034512c543d0bd07 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Fri, 25 Jun 2021 10:02:48 +0800 |
| Subject: blk-mq: update hctx->dispatch_busy in case of real scheduler |
| |
| From: Ming Lei <ming.lei@redhat.com> |
| |
| [ 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@suse.cz> |
| Reviewed-by: Jan Kara <jack@suse.cz> |
| Fixes: 6e6fcbc27e77 ("blk-mq: support batching dispatch in case of io") |
| Signed-off-by: Ming Lei <ming.lei@redhat.com> |
| Link: https://lore.kernel.org/r/20210625020248.1630497-1-ming.lei@redhat.com |
| Signed-off-by: Jens Axboe <axboe@kernel.dk> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| 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 |
| |
