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[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>
This commit is contained in:
Arjan van de Ven 2008-10-21 06:47:33 -07:00 committed by Al Viro
parent 08b9fe6b12
commit fd217f4d70
1 changed files with 1 additions and 0 deletions
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1
fs/dcache.c
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@ -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);