On Thu, Aug 18, 2022 at 9:50 PM Chris Murphy [off-list ref] wrote:

On Thu, Aug 18, 2022, at 1:24 AM, Ming Lei wrote:

quoted

Also please test the following one too:

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5ee62b95f3e5..d01c64be08e2 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c

@@ -1991,7 +1991,8 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx

*hctx, struct list_head *list,
              if (!needs_restart ||
                  (no_tag && list_empty_careful(&hctx->dispatch_wait.entry)))
                      blk_mq_run_hw_queue(hctx, true);
-             else if (needs_restart && needs_resource)
+             else if (needs_restart && (needs_resource ||
+                                     blk_mq_is_shared_tags(hctx->flags)))
                      blk_mq_delay_run_hw_queue(hctx, BLK_MQ_RESOURCE_DELAY);

              blk_mq_update_dispatch_busy(hctx, true);

Should I test both patches at the same time, or separately? On top of v5.17 clean, or with b6e68ee82585 still reverted?

Please test it separately against v5.17.

thanks,