On Wed, 3 Aug 2022 10:33:55 +0800, Yufen Yu wrote:

From: Yufen Yu <redacted>

We do test on a virtio scsi device (/dev/sda) and the default mq
scheduler is 'none'. We found a IO hung as following:

blk_finish_plug
  blk_mq_plug_issue_direct
      scsi_mq_get_budget
      //get budget_token fail and sdev->restarts=1

[...]

Applied, thanks!

[1/1] blk-mq: run queue no matter whether the request is the last request
      commit: d3b38596875dbc709b4e721a5873f4663d8a9ea2

Best regards,
-- 
Jens Axboe