Re: [PATCH] block: revert pushing the final release of request_queue to a workqueue.

[yukuai (C)]

On 2020/2/7 14:02, yukuai (C) wrote:
> And I do agree that commit 7b36a7189fc3 is the right
> one.

My apologize that this is a mistake. Commit db6d99523560 is the one that
makes it safe to revert commit dc9edc44de6c. Because Commit db6d99523560
remove blk_exit_rl() from blkg_free().

blkg_release
  call_rcu --> can't sleep inside this
    __blkg_release
      blkg_free
        blk_exit_rl
	  blk_put_queue