linux-kernel - [-mm][PATCH] make inlining to __alloc

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Date:	Mon, 05 May 2008 01:17:08 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Lee Schermerhorn <lee.schermerhorn@...com>,
	Mel Gorman <mel@....ul.ie>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	kosaki.motohiro@...fujitsu.com
Subject: [-mm][PATCH] make inlining to __alloc_pages()

Two zonelist patch series rewriten __page_alloc() largely.
Now, it is just wrapper function.

thus, that change inline function is better.



CC: Lee Schermerhorn <lee.schermerhorn@...com>
CC: Mel Gorman <mel@....ul.ie>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

---
 include/linux/gfp.h |   21 +++++++++++++++++----
 mm/page_alloc.c     |   18 +-----------------
 2 files changed, 18 insertions(+), 21 deletions(-)

Index: b/include/linux/gfp.h
===================================================================
--- a/include/linux/gfp.h	2008-05-05 01:32:00.000000000 +0900
+++ b/include/linux/gfp.h	2008-05-05 01:38:35.000000000 +0900
@@ -173,11 +173,24 @@ static inline void arch_free_page(struct
 static inline void arch_alloc_page(struct page *page, int order) { }
 #endif
 
-extern struct page *__alloc_pages(gfp_t, unsigned int, struct zonelist *);
+struct page *
+__alloc_pages_internal(gfp_t gfp_mask, unsigned int order,
+		       struct zonelist *zonelist, nodemask_t *nodemask);
+
+static inline struct page *
+__alloc_pages(gfp_t gfp_mask, unsigned int order,
+		struct zonelist *zonelist)
+{
+	return __alloc_pages_internal(gfp_mask, order, zonelist, NULL);
+}
+
+static inline struct page *
+__alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
+		struct zonelist *zonelist, nodemask_t *nodemask)
+{
+	return __alloc_pages_internal(gfp_mask, order, zonelist, nodemask);
+}
 
-extern struct page *
-__alloc_pages_nodemask(gfp_t, unsigned int,
-				struct zonelist *, nodemask_t *nodemask);
 
 static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask,
 						unsigned int order)
Index: b/mm/page_alloc.c
===================================================================
--- a/mm/page_alloc.c	2008-05-05 01:32:28.000000000 +0900
+++ b/mm/page_alloc.c	2008-05-05 01:38:22.000000000 +0900
@@ -1528,7 +1528,7 @@ static void set_page_owner(struct page *
 /*
  * This is the 'heart' of the zoned buddy allocator.
  */
-static struct page *
+struct page *
 __alloc_pages_internal(gfp_t gfp_mask, unsigned int order,
 			struct zonelist *zonelist, nodemask_t *nodemask)
 {
@@ -1736,22 +1736,6 @@ got_pg:
 	return page;
 }
 
-struct page *
-__alloc_pages(gfp_t gfp_mask, unsigned int order,
-		struct zonelist *zonelist)
-{
-	return __alloc_pages_internal(gfp_mask, order, zonelist, NULL);
-}
-
-struct page *
-__alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
-		struct zonelist *zonelist, nodemask_t *nodemask)
-{
-	return __alloc_pages_internal(gfp_mask, order, zonelist, nodemask);
-}
-
-EXPORT_SYMBOL(__alloc_pages);
-
 /*
  * Common helper functions.
  */


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