Re: [PATCH] blk: optimization for classic polling

[Sagi Grimberg]

I think it'd be simpler to have blk_poll set it back to running if
need_resched is true rather than repeat this patter across all the
callers:

---
diff --git a/block/blk-mq.c b/block/blk-mq.c
index df93102e2149..40285fe1c8ad 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3164,6 +3164,7 @@ static bool __blk_mq_poll(struct blk_mq_hw_ctx *hctx, 
struct request *rq)
                cpu_relax();
        }

+ set_current_state(TASK_RUNNING);

        return false;
  }

--

Nice!