From: Ian Kent <raven@themaw.net>
Date: Fri, 29 Sep 2006 09:00:53 +0000 (-0700)
Subject: [PATCH] autofs4: autofs4_follow_link false negative fix
X-Git-Tag: v2.6.19-rc1~721
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=be3ca7fecb1a9903c6253f49aec0af2a0f3a04e4;p=linux-2.6

[PATCH] autofs4: autofs4_follow_link false negative fix

The check for an empty directory in the autofs4_follow_link method fails
occassionally due to old dentrys.  We had the same problem
autofs4_revalidate ages ago.  I thought we wouldn't need this in
autofs4_follow_link, silly me.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 27e17f96ca..0ec2483523 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -359,7 +359,7 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
 	 * don't try to mount it again.
 	 */
 	spin_lock(&dcache_lock);
-	if (!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
+	if (!d_mountpoint(dentry) && __simple_empty(dentry)) {
 		spin_unlock(&dcache_lock);
 
 		status = try_to_fill_dentry(dentry, 0);