From: Miklos Szeredi <miklos@szeredi.hu>
Date: Mon, 27 Oct 2014 14:42:01 +0000 (+0100)
Subject: overlayfs: fix lockdep misannotation
X-Git-Tag: omap-for-v3.19/fixes-not-urgent-part1~14^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d1b72cc6d8cb766c802fdc70a5edc2f0ba8a2b57;p=pandora-kernel.git

overlayfs: fix lockdep misannotation

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

It's actually harmless, but needs another level of nesting between
I_MUTEX_CHILD and I_MUTEX_NORMAL.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Tested-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

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