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[PATCH -mm 12/25] pageflag helpers for configed-out flags

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From: Rik van Riel <riel@...>
To: <linux-kernel@...>
Cc: Andrew Morton <akpm@...>, Lee Schermerhorn <lee.schermerhorn@...>, Kosaki Motohiro <kosaki.motohiro@...>
Subject: [PATCH -mm 12/25] pageflag helpers for configed-out flags
Date: Friday, June 6, 2008 - 4:28 pm

From: Lee Schermerhorn <lee.schermerhorn@hp.com>

Define proper false/noop inline functions for noreclaim page
flags when !defined(CONFIG_NORECLAIM_LRU)

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Rik van Riel <riel@redhat.com>

---
 include/linux/page-flags.h |   12 ++++++++++++
 1 file changed, 12 insertions(+)

Index: linux-2.6.26-rc2-mm1/include/linux/page-flags.h
===================================================================
--- linux-2.6.26-rc2-mm1.orig/include/linux/page-flags.h	2008-05-28 09:40:59.000000000 -0400
+++ linux-2.6.26-rc2-mm1/include/linux/page-flags.h	2008-05-28 09:42:35.000000000 -0400
@@ -147,6 +147,18 @@ static inline int Page##uname(struct pag
 #define TESTSCFLAG(uname, lname)					\
 	TESTSETFLAG(uname, lname) TESTCLEARFLAG(uname, lname)
 
+#define SETPAGEFLAG_NOOP(uname)						\
+static inline void SetPage##uname(struct page *page) {  }
+
+#define CLEARPAGEFLAG_NOOP(uname)					\
+static inline void ClearPage##uname(struct page *page) {  }
+
+#define __CLEARPAGEFLAG_NOOP(uname)					\
+static inline void __ClearPage##uname(struct page *page) {  }
+
+#define TESTCLEARFLAG_FALSE(uname)					\
+static inline int TestClearPage##uname(struct page *page) { return 0; }
+
 struct page;	/* forward declaration */
 
 PAGEFLAG(Locked, locked) TESTSCFLAG(Locked, locked)

-- 
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[PATCH -mm 12/25] pageflag helpers for configed-out flags, Rik van Riel, (Fri Jun 6, 4:28 pm)