linux-kernel - [PATCH -mmotm] mm: fix kmemcheck.c build errors

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Date:	Fri,  5 Sep 2014 16:28:06 +0900
From:	Joonsoo Kim <iamjoonsoo.kim@....com>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-next@...r.kernel.org, sfr@...b.auug.org.au, mhocko@...e.cz,
	Pekka Enberg <penberg@...nel.org>,
	Vegard Nossum <vegardno@....uio.no>,
	Christoph Lameter <cl@...ux.com>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Randy Dunlap <rdunlap@...radead.org>
Subject: [PATCH -mmotm] mm: fix kmemcheck.c build errors

mm-slab_common-move-kmem_cache-definition-to-internal-header.patch
in mmotm makes following build failure.

../mm/kmemcheck.c:70:7: error: dereferencing pointer to incomplete type
../mm/kmemcheck.c:83:15: error: dereferencing pointer to incomplete type
../mm/kmemcheck.c:95:8: error: dereferencing pointer to incomplete type
../mm/kmemcheck.c:95:21: error: dereferencing pointer to incomplete type

../mm/slab.h: In function 'cache_from_obj':
../mm/slab.h:283:2: error: implicit declaration of function
'memcg_kmem_enabled' [-Werror=implicit-function-declaration]

Add header files to fix kmemcheck.c build errors.

[iamjoonsoo.kim@....com] move up memcontrol.h header
to fix build failure if CONFIG_MEMCG_KMEM=y too.
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
---
 mm/kmemcheck.c |    1 +
 mm/slab.h      |    2 ++
 2 files changed, 3 insertions(+)

diff --git a/mm/kmemcheck.c b/mm/kmemcheck.c
index fd814fd..cab58bb 100644
--- a/mm/kmemcheck.c
+++ b/mm/kmemcheck.c
@@ -2,6 +2,7 @@
 #include <linux/mm_types.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
+#include "slab.h"
 #include <linux/kmemcheck.h>
 
 void kmemcheck_alloc_shadow(struct page *page, int order, gfp_t flags, int node)
diff --git a/mm/slab.h b/mm/slab.h
index 13845d0..963a3f8 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -37,6 +37,8 @@ struct kmem_cache {
 #include <linux/slub_def.h>
 #endif
 
+#include <linux/memcontrol.h>
+
 /*
  * State of the slab allocator.
  *
-- 
1.7.9.5

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