On Tue, Aug 31, 2021 at 10:28:24PM +0800, Su Yue wrote:

On Tue 31 Aug 2021 at 06:41, Anand Jain [off-list ref] 
wrote:

quoted

Ping.

In the past week, I spent some time on testing this patchset and
the patch 'btrfs: fix lockdep warning while mounting sprout fs'.

Same as you, I wonder if there is any race condition. Just wrote
some scripts including device removal, replace and sprout while
busy looping showing mount info. It runned well and passed 
xfstests
in my two VMs. I'm not a pundit in btrfs device field so I can't 
give my
RBs even these patches looks almost okay to me.

So this could be a Tested-by if you want.