memcg: fix race in file_mapped accounting

[safe/jmp/linux-2.6] / include / linux / cache.h

diff --git a/include/linux/cache.h b/include/linux/cache.h
index 0b7ecf3..97e2488 100644 (file)
--- a/include/linux/cache.h
+++ b/include/linux/cache.h
@@ -2,7 +2,6 @@
 #define __LINUX_CACHE_H
 
 #include <linux/kernel.h>
-#include <linux/config.h>
 #include <asm/cache.h>
 
 #ifndef L1_CACHE_ALIGN
@@ -13,9 +12,7 @@
 #define SMP_CACHE_BYTES L1_CACHE_BYTES
 #endif
 
-#if defined(CONFIG_X86) || defined(CONFIG_SPARC64) || defined(CONFIG_IA64)
-#define __read_mostly __attribute__((__section__(".data.read_mostly")))
-#else
+#ifndef __read_mostly
 #define __read_mostly
 #endif
 
@@ -45,13 +42,26 @@
 #endif /* CONFIG_SMP */
 #endif
 
-#if !defined(____cacheline_maxaligned_in_smp)
+/*
+ * The maximum alignment needed for some critical structures
+ * These could be inter-node cacheline sizes/L3 cacheline
+ * size etc.  Define this in asm/cache.h for your arch
+ */
+#ifndef INTERNODE_CACHE_SHIFT
+#define INTERNODE_CACHE_SHIFT L1_CACHE_SHIFT
+#endif
+
+#if !defined(____cacheline_internodealigned_in_smp)
 #if defined(CONFIG_SMP)
-#define ____cacheline_maxaligned_in_smp \
-       __attribute__((__aligned__(1 << (L1_CACHE_SHIFT_MAX))))
+#define ____cacheline_internodealigned_in_smp \
+       __attribute__((__aligned__(1 << (INTERNODE_CACHE_SHIFT))))
 #else
-#define ____cacheline_maxaligned_in_smp
+#define ____cacheline_internodealigned_in_smp
 #endif
 #endif
 
+#ifndef CONFIG_ARCH_HAS_CACHE_LINE_SIZE
+#define cache_line_size()      L1_CACHE_BYTES
+#endif
+
 #endif /* __LINUX_CACHE_H */