linux-kernel - [PATCH 2.6.19-rc3] VFS: extra check inside dentry

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Message-ID: <454878ED.1080405@sw.ru>
Date:	Wed, 01 Nov 2006 13:37:33 +0300
From:	Vasily Averin <vvs@...ru>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>, Jan Blunck <jblunck@...e.de>,
	Alexander Viro <viro@...iv.linux.org.uk>
CC:	devel@...nvz.org
Subject: [PATCH 2.6.19-rc3] VFS: extra check inside dentry_unhash()

From:	Vasily Averin <vvs@...ru>

d_count check after dget() is always true

Signed-off-by:	Vasily Averin <vvs@...ru>

--- linux-2.6.19-rc3-mm1/fs/namei.c.duhsh	2006-10-30 14:20:19.000000000 +0300
+++ linux-2.6.19-rc3-mm1/fs/namei.c	2006-11-01 13:17:17.000000000 +0300
@@ -1993,8 +1993,7 @@ asmlinkage long sys_mkdir(const char __u
 void dentry_unhash(struct dentry *dentry)
 {
 	dget(dentry);
-	if (atomic_read(&dentry->d_count))
-		shrink_dcache_parent(dentry);
+	shrink_dcache_parent(dentry);
 	spin_lock(&dcache_lock);
 	spin_lock(&dentry->d_lock);
 	if (atomic_read(&dentry->d_count) == 2)


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