From 1950267e6e9dc2531f2790bf217aa7aadc9aa324 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 5 May 2013 20:20:25 -0400
Subject: [PATCH] hfs: SMP race on directory close()

->open_dir_list needs protection...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/hfs/dir.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 17c22a8fd40a..e0101b6fb0d7 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -176,7 +176,9 @@ static int hfs_dir_release(struct inode *inode, struct file *file)
 {
 	struct hfs_readdir_data *rd = file->private_data;
 	if (rd) {
+		mutex_lock(&inode->i_mutex);
 		list_del(&rd->list);
+		mutex_unlock(&inode->i_mutex);
 		kfree(rd);
 	}
 	return 0;