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

Commit 6e6fcbc ("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 <[email protected]> Reviewed-by: Jan Kara <[email protected]> Fixes: 6e6fcbc ("blk-mq: support batching dispatch in case of io") Signed-off-by: Ming Lei <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jens Axboe <[email protected]>
mrcsosa · Jun 25, 2021 · cb9516b · cb9516b
1 parent fd2ef39
commit cb9516b
Showing 1 changed file with 0 additions and 3 deletions.
diff --git a/block/blk-mq.c b/block/blk-mq.c
@@ -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)