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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>
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@@ -69,6 +69,7 @@ |
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static void __d_free(struct dentry *dentry) |
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{ |
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+ WARN_ON(!list_empty(&dentry->d_alias)); |
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if (dname_external(dentry)) |
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kfree(dentry->d_name.name); |
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kmem_cache_free(dentry_cache, dentry); |
Al Viro