Re: Locking problem in overlayfs

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Miklos Szeredi <miklos@xxxxxxxxxx> wrote:

> Uh-oh.  We changed nesting late in the cycle and I didn't retest with lockdep.
> 
> And it's actually harmless, but AFAICS needs another level of nesting between
> I_MUTEX_CHILD and I_MUTEX_NORMAL.

In an overlay directory that shadows an empty lower directory, say
/mnt/a/empty102, do:

	touch /mnt/a/empty102/x
	unlink /mnt/a/empty102/x
	rmdir /mnt/a/empty102

David
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