d1b72cc6d8cb766c802fdc70a5edc2f0ba8a2b57 - linux

commit	d1b72cc6d8cb766c802fdc70a5edc2f0ba8a2b57	[log] [tgz]
author	Miklos Szeredi <miklos@szeredi.hu>	Mon Oct 27 15:42:01 2014 +0100
committer	Al Viro <viro@zeniv.linux.org.uk>	Tue Oct 28 18:32:47 2014 -0400
tree	35e1ed80b8a78b53538d73bd99525d17def9a7f5
parent	c2096537d40f026672c4c6adfcd7247ce5799604 [diff]

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>

fs/namei.c[diff]
fs/overlayfs/readdir.c[diff]
include/linux/fs.h[diff]

3 files changed

tree: 35e1ed80b8a78b53538d73bd99525d17def9a7f5