fuse: annotate lock in fuse_reverse_inval_entry()

Add missing inode lock annotatation; found by syzbot.

Reported-and-tested-by: syzbot+9f747458f5990eaa8d43@syzkaller.appspotmail.com
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 2798fbe..80a2181 100644 (file)
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1079,7 +1079,7 @@ int fuse_reverse_inval_entry(struct fuse_conn *fc, u64 parent_nodeid,
        if (!parent)
                return -ENOENT;
 
-       inode_lock(parent);
+       inode_lock_nested(parent, I_MUTEX_PARENT);
        if (!S_ISDIR(parent->i_mode))
                goto unlock;