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| author | Miklos Szeredi <miklos@szeredi.hu> | 2014-10-27 15:42:01 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-10-28 23:32:47 +0100 |
| commit | d1b72cc6d8cb766c802fdc70a5edc2f0ba8a2b57 (patch) | |
| tree | 35e1ed80b8a78b53538d73bd99525d17def9a7f5 /fs/overlayfs | |
| parent | ovl: fix check for cursor (diff) | |
| download | linux-d1b72cc6d8cb766c802fdc70a5edc2f0ba8a2b57.tar.xz linux-d1b72cc6d8cb766c802fdc70a5edc2f0ba8a2b57.zip | |
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/overlayfs')
| -rw-r--r-- | fs/overlayfs/readdir.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c index 3fbf0d306e12..401f0840f5cc 100644 --- a/fs/overlayfs/readdir.c +++ b/fs/overlayfs/readdir.c @@ -571,7 +571,7 @@ void ovl_cleanup_whiteouts(struct dentry *upper, struct list_head *list) { struct ovl_cache_entry *p; - mutex_lock_nested(&upper->d_inode->i_mutex, I_MUTEX_PARENT); + mutex_lock_nested(&upper->d_inode->i_mutex, I_MUTEX_CHILD); list_for_each_entry(p, list, l_node) { struct dentry *dentry; |