Commit fd217f4d authored Oct 21, 2008 by Arjan van de Ven Committed by Al Viro Oct 23, 2008

[PATCH] fs: add a sanity check in d_free



Hi Al,

remember that debug session we did at KS? You suggested this patch back
then....

From 7751eaf30474b8cbfaea64795805a17eab05ac53 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Tue, 16 Sep 2008 16:51:17 -0700
Subject: [PATCH] fs: add a sanity check in d_free

we're seeing some corruption in the dentry->d_alias list that
appears like a free of an entry still on the list; this patch
adds a WARN_ON() to catch this scenario, as suggested by Al Viro

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

parent 08b9fe6b

fs/dcache.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -69,6 +69,7 @@ struct dentry_stat_t dentry_stat = {

		static void __d_free(struct dentry *dentry)
		{
		WARN_ON(!list_empty(&dentry->d_alias));
		if (dname_external(dentry))
		kfree(dentry->d_name.name);
		kmem_cache_free(dentry_cache, dentry);

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