[PATCH] mm: consolidate get_order

Someone mentioned that almost all the architectures used basically the same
implementation of get_order.  This patch consolidates them into
asm-generic/page.h and includes that in the appropriate places.  The
exceptions are ia64 and ppc which have their own (presumably optimised)
versions.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 14 deletions

diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h
index 431318764af6..fcf890aa8c81 100644
--- a/include/asm-x86_64/page.h
+++ b/include/asm-x86_64/page.h
@@ -92,20 +92,6 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 
 #include <asm/bug.h>
 
-/* Pure 2^n version of get_order */
-extern __inline__ int get_order(unsigned long size)
-{
-        int order;
-
-        size = (size-1) >> (PAGE_SHIFT-1);
-        order = -1;
-        do {
-                size >>= 1;
-                order++;
-        } while (size);
-        return order;
-}
-
 #endif /* __ASSEMBLY__ */
 
 #define PAGE_OFFSET             ((unsigned long)__PAGE_OFFSET)
@@ -141,4 +127,6 @@ extern __inline__ int get_order(unsigned long size)
 
 #endif /* __KERNEL__ */
 
+#include <asm-generic/page.h>
+
 #endif /* _X86_64_PAGE_H */