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authorMiklos Szeredi <miklos@szeredi.hu>2014-10-27 17:42:01 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2014-10-29 01:32:47 +0300
commitd1b72cc6d8cb766c802fdc70a5edc2f0ba8a2b57 (patch)
tree35e1ed80b8a78b53538d73bd99525d17def9a7f5 /fs/namei.c
parentc2096537d40f026672c4c6adfcd7247ce5799604 (diff)
downloadlinux-d1b72cc6d8cb766c802fdc70a5edc2f0ba8a2b57.tar.xz
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>
Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 42df664e95e5..922f27068c4c 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2497,7 +2497,7 @@ struct dentry *lock_rename(struct dentry *p1, struct dentry *p2)
}
mutex_lock_nested(&p1->d_inode->i_mutex, I_MUTEX_PARENT);
- mutex_lock_nested(&p2->d_inode->i_mutex, I_MUTEX_CHILD);
+ mutex_lock_nested(&p2->d_inode->i_mutex, I_MUTEX_PARENT2);
return NULL;
}
EXPORT_SYMBOL(lock_rename);