From d9b7f22623b5fa9cc189581dcdfb2ac605933bf4 Mon Sep 17 00:00:00 2001
From: Glauber Costa <glommer@parallels.com>
Date: Fri, 3 Aug 2012 22:51:37 +0400
Subject: [PATCH] slub: use free_page instead of put_page for freeing kmalloc
 allocation

When freeing objects, the slub allocator will most of the time free
empty pages by calling __free_pages(). But high-order kmalloc will be
diposed by means of put_page() instead. It makes no sense to call
put_page() in kernel pages that are provided by the object allocators,
so we shouldn't be doing this ourselves. Aside from the consistency
change, we don't change the flow too much. put_page()'s would call its
dtor function, which is __free_pages. We also already do all of the
Compound page tests ourselves, and the Mlock test we lose don't really
matter.

Signed-off-by: Glauber Costa <glommer@parallels.com>
Acked-by: Christoph Lameter <cl@linux.com>
CC: David Rientjes <rientjes@google.com>
CC: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---
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