Re: [PATCH RFC v4 23/25] fs: start all kthreads in nullfs

[Christian Brauner]

 > The following lockdep splat can be triggered on mainline, which is built
> with arm64's defconfig plus
> 
> 	CONFIG_SHRINKER_DEBUG
> 	CONFIG_PROVE_LOCKING
> 	CONFIG_FTRACE
> 
> .  Reverting this patch (as pointed out by AI) makes this warn disappear.

This is benign and caused by holding LOCK_MOUNT_EXACT() for longer than
necessary. I'm adding the appended fix to vfs.fixes.