diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
index 6c2327e..fea99b0 100644
--- a/arch/arm/include/asm/barrier.h
+++ b/arch/arm/include/asm/barrier.h
@@ -2,7 +2,6 @@
 #define __ASM_BARRIER_H
 
 #ifndef __ASSEMBLY__
-#include <asm/outercache.h>
 
 #define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
 
@@ -37,12 +36,19 @@
 #define dmb(x) __asm__ __volatile__ ("" : : : "memory")
 #endif
 
+#ifdef CONFIG_ARM_HEAVY_MB
+extern void arm_heavy_mb(void);
+#define __arm_heavy_mb(x...) do { dsb(x); arm_heavy_mb(); } while (0)
+#else
+#define __arm_heavy_mb(x...) dsb(x)
+#endif
+
 #ifdef CONFIG_ARCH_HAS_BARRIERS
 #include <mach/barriers.h>
 #elif defined(CONFIG_ARM_DMA_MEM_BUFFERABLE) || defined(CONFIG_SMP)
-#define mb()		do { dsb(); outer_sync(); } while (0)
+#define mb()		__arm_heavy_mb()
 #define rmb()		dsb()
-#define wmb()		do { dsb(st); outer_sync(); } while (0)
+#define wmb()		__arm_heavy_mb(st)
 #define dma_rmb()	dmb(osh)
 #define dma_wmb()	dmb(oshst)
 #else
diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h
index 563b92f..c2bf24f 100644
--- a/arch/arm/include/asm/outercache.h
+++ b/arch/arm/include/asm/outercache.h
@@ -129,21 +129,4 @@
 
 #endif
 
-#ifdef CONFIG_OUTER_CACHE_SYNC
-/**
- * outer_sync - perform a sync point for outer cache
- *
- * Ensure that all outer cache operations are complete and any store
- * buffers are drained.
- */
-static inline void outer_sync(void)
-{
-	if (outer_cache.sync)
-		outer_cache.sync();
-}
-#else
-static inline void outer_sync(void)
-{ }
-#endif
-
 #endif	/* __ASM_OUTERCACHE_H */
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 350f188..b96c8ed 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -39,6 +39,7 @@
 #include <linux/export.h>
 
 #include <asm/hardware/cache-l2x0.h>
+#include <asm/outercache.h>
 #include <asm/exception.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/irq.h>
diff --git a/arch/arm/mach-mmp/pm-pxa910.c b/arch/arm/mach-mmp/pm-pxa910.c
index 04c9daf..7db5870 100644
--- a/arch/arm/mach-mmp/pm-pxa910.c
+++ b/arch/arm/mach-mmp/pm-pxa910.c
@@ -18,6 +18,7 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <asm/mach-types.h>
+#include <asm/outercache.h>
 #include <mach/hardware.h>
 #include <mach/cputype.h>
 #include <mach/addr-map.h>
diff --git a/arch/arm/mach-prima2/pm.c b/arch/arm/mach-prima2/pm.c
index d99d08e..83e94c9 100644
--- a/arch/arm/mach-prima2/pm.c
+++ b/arch/arm/mach-prima2/pm.c
@@ -16,6 +16,7 @@
 #include <linux/of_platform.h>
 #include <linux/io.h>
 #include <linux/rtc/sirfsoc_rtciobrg.h>
+#include <asm/outercache.h>
 #include <asm/suspend.h>
 #include <asm/hardware/cache-l2x0.h>
 
diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c
index 7557bed..780bd13 100644
--- a/arch/arm/mach-ux500/cache-l2x0.c
+++ b/arch/arm/mach-ux500/cache-l2x0.c
@@ -8,6 +8,7 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 
+#include <asm/outercache.h>
 #include <asm/hardware/cache-l2x0.h>
 
 #include "db8500-regs.h"
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 7c6b976..df7537f 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -883,6 +883,7 @@
 
 config OUTER_CACHE_SYNC
 	bool
+	select ARM_HEAVY_MB
 	help
 	  The outer cache has a outer_cache_fns.sync function pointer
 	  that can be used to drain the write buffer of the outer cache.
@@ -1031,6 +1032,9 @@
 	  This option allows the use of custom mandatory barriers
 	  included via the mach/barriers.h file.
 
+config ARM_HEAVY_MB
+	bool
+
 config ARCH_SUPPORTS_BIG_ENDIAN
 	bool
 	help
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 34b66af..ce6c296 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -21,6 +21,17 @@
 
 #include "mm.h"
 
+#ifdef CONFIG_ARM_HEAVY_MB
+void arm_heavy_mb(void)
+{
+#ifdef CONFIG_OUTER_CACHE_SYNC
+	if (outer_cache.sync)
+		outer_cache.sync();
+#endif
+}
+EXPORT_SYMBOL(arm_heavy_mb);
+#endif
+
 #ifdef CONFIG_CPU_CACHE_VIPT
 
 static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)