From: Huang Shijie <shijie8@gmail.com>
Date: Fri, 2 Apr 2010 09:37:13 +0000 (+0800)
Subject: namei.c : update mnt when it needed
X-Git-Tag: firefly_0821_release~9833^2~2046^2~28
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9a2296832c43da93a88e1edd59f3d17acffca36c;p=firefly-linux-kernel-4.4.55.git

namei.c : update mnt when it needed

update the mnt of the path when it is not equal to the new one.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/namei.c b/fs/namei.c
index b86b96fe1dc3..48e1f60520ea 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -523,9 +523,10 @@ static void path_put_conditional(struct path *path, struct nameidata *nd)
 static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
 {
 	dput(nd->path.dentry);
-	if (nd->path.mnt != path->mnt)
+	if (nd->path.mnt != path->mnt) {
 		mntput(nd->path.mnt);
-	nd->path.mnt = path->mnt;
+		nd->path.mnt = path->mnt;
+	}
 	nd->path.dentry = path->dentry;
 }