fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / linux / err.h

diff --git a/include/linux/err.h b/include/linux/err.h
index 92cab64..1ab1d44 100644 (file)
--- a/include/linux/err.h
+++ b/include/linux/err.h
@@ -1,6 +1,8 @@
 #ifndef _LINUX_ERR_H
 #define _LINUX_ERR_H
 
+#include <linux/compiler.h>
+
 #include <asm/errno.h>
 
 /*
@@ -11,6 +13,12 @@
  * This should be a per-architecture thing, to allow different
  * error and pointer decisions.
  */
+#define MAX_ERRNO      4095
+
+#ifndef __ASSEMBLY__
+
+#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
+
 static inline void *ERR_PTR(long error)
 {
        return (void *) error;
@@ -23,7 +31,9 @@ static inline long PTR_ERR(const void *ptr)
 
 static inline long IS_ERR(const void *ptr)
 {
-       return (unsigned long)ptr > (unsigned long)-1000L;
+       return IS_ERR_VALUE((unsigned long)ptr);
 }
 
+#endif
+
 #endif /* _LINUX_ERR_H */