[XFS] Export pagevec_lookup for use on the XFS page writeout path,

[karo-tx-linux.git] / include / asm-arm / system.h

diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index 3f9c3626a73cc6bc4cddd47738979be95bb0d915..5621d61ebc07958e9e7a671def64f410fe26dcb1 100644 (file)
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -93,8 +93,6 @@ void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int,
                                       struct pt_regs *),
                     int sig, const char *name);
 
-#include <asm/proc-fns.h>
-
 #define xchg(ptr,x) \
        ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
 
@@ -102,6 +100,8 @@ void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int,
 
 extern asmlinkage void __backtrace(void);
 extern asmlinkage void c_backtrace(unsigned long fp, int pmode);
+
+struct mm_struct;
 extern void show_pte(struct mm_struct *mm, unsigned long addr);
 extern void __show_regs(struct pt_regs *);
 
@@ -139,7 +139,12 @@ extern unsigned int user_debug;
 #define vectors_high() (0)
 #endif
 
+#if __LINUX_ARM_ARCH__ >= 6
+#define mb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \
+                                   : : "r" (0) : "memory")
+#else
 #define mb() __asm__ __volatile__ ("" : : : "memory")
+#endif
 #define rmb() mb()
 #define wmb() mb()
 #define read_barrier_depends() do { } while(0)