[PATCH] Clean up arch-overrides in linux/string.h

Some string functions were safely overrideable in lib/string.c, but their
corresponding declarations in linux/string.h were not.  Correct this, and
make strcspn overrideable.

Odds of someone wanting to do optimized assembly of these are small, but
for the sake of cleanliness, might as well bring them into line with the
rest of the file.

Signed-off-by: Kyle McMartin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

include/linux/string.h

@@ -13,11 +13,6 @@
 extern "C" {
 #endif
 
-extern char * strpbrk(const char *,const char *);
-extern char * strsep(char **,const char *);
-extern __kernel_size_t strspn(const char *,const char *);
-extern __kernel_size_t strcspn(const char *,const char *);
-
 extern char *strndup_user(const char __user *, long);
 
 /*
@@ -70,6 +65,18 @@ extern __kernel_size_t strlen(const char *);
 #ifndef __HAVE_ARCH_STRNLEN
 extern __kernel_size_t strnlen(const char *,__kernel_size_t);
 #endif
+#ifndef __HAVE_ARCH_STRPBRK
+extern char * strpbrk(const char *,const char *);
+#endif
+#ifndef __HAVE_ARCH_STRSEP
+extern char * strsep(char **,const char *);
+#endif
+#ifndef __HAVE_ARCH_STRSPN
+extern __kernel_size_t strspn(const char *,const char *);
+#endif
+#ifndef __HAVE_ARCH_STRCSPN
+extern __kernel_size_t strcspn(const char *,const char *);
+#endif
 
 #ifndef __HAVE_ARCH_MEMSET
 extern void * memset(void *,int,__kernel_size_t);

lib/string.c

@@ -362,6 +362,7 @@ size_t strspn(const char *s, const char *accept)
 EXPORT_SYMBOL(strspn);
 #endif
 
+#ifndef __HAVE_ARCH_STRCSPN
 /**
  * strcspn - Calculate the length of the initial substring of @s which does
  * 	not contain letters in @reject
@@ -384,6 +385,7 @@ size_t strcspn(const char *s, const char *reject)
 	return count;
 }
 EXPORT_SYMBOL(strcspn);
+#endif
 
 #ifndef __HAVE_ARCH_STRPBRK
 /**