From 01bf20f3a5f8faf92586f2e70b38dc9754fa14da Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Mon, 20 Aug 2007 21:36:29 +0900
Subject: [PATCH] --- yaml --- r: 67971 b: refs/heads/master c:
 253280267a7f1ced0c434fb24b7bef92d7d22628 h: refs/heads/master i:   67969:
 d9015459e05793791daebdaa2791652589007aac   67967:
 a3690ac9b5efc3113786e9e12351fb8ece5e7491 v: v3

---
 [refs]               | 2 +-
 trunk/fs/sysfs/dir.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 1a2898e747d4..a76bc20b5a6d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1359555eb77d240b7c1d7ee75bb07e89e89770e4
+refs/heads/master: 253280267a7f1ced0c434fb24b7bef92d7d22628
diff --git a/trunk/fs/sysfs/dir.c b/trunk/fs/sysfs/dir.c
index a0da2b05a754..54ca4bc02dcf 100644
--- a/trunk/fs/sysfs/dir.c
+++ b/trunk/fs/sysfs/dir.c
@@ -130,8 +130,10 @@ struct dentry *sysfs_get_dentry(struct sysfs_dirent *sd)
 
 		/* look it up */
 		parent_dentry = dentry;
+		mutex_lock(&parent_dentry->d_inode->i_mutex);
 		dentry = lookup_one_len_kern(cur->s_name, parent_dentry,
 					     strlen(cur->s_name));
+		mutex_unlock(&parent_dentry->d_inode->i_mutex);
 		dput(parent_dentry);
 
 		if (IS_ERR(dentry)) {