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blk-mq: update hctx->dispatch_busy in case of real scheduler
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>
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@ -1224,9 +1224,6 @@ static void blk_mq_update_dispatch_busy(struct blk_mq_hw_ctx *hctx, bool busy)
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{
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unsigned int ewma;
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if (hctx->queue->elevator)
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return;
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ewma = hctx->dispatch_busy;
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if (!ewma && !busy)
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