linux-kernel - [RFC][PATCH 3/3] mm: Remove unused page flags

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Date:	Sun, 11 Mar 2007 11:34:53 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Pavel Machek <pavel@....cz>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Nigel Cunningham <ncunningham@...uxmail.org>,
	Johannes Berg <johannes@...solutions.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Christoph Lameter <clameter@....com>,
	Nick Piggin <nickpiggin@...oo.com.au>
Subject: [RFC][PATCH 3/3] mm: Remove unused page flags

From: Rafael J. Wysocki <rjw@...k.pl>

Remove the two page flags that were previously used by swsusp and are no longer
needed.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 include/linux/page-flags.h |   12 ------------
 1 file changed, 12 deletions(-)

Index: linux-2.6.21-rc3/include/linux/page-flags.h
===================================================================
--- linux-2.6.21-rc3.orig/include/linux/page-flags.h
+++ linux-2.6.21-rc3/include/linux/page-flags.h
@@ -82,13 +82,11 @@
 #define PG_private		11	/* If pagecache, has fs-private data */
 
 #define PG_writeback		12	/* Page is under writeback */
-#define PG_nosave		13	/* Used for system suspend/resume */
 #define PG_compound		14	/* Part of a compound page */
 #define PG_swapcache		15	/* Swap page: swp_entry_t in private */
 
 #define PG_mappedtodisk		16	/* Has blocks allocated on-disk */
 #define PG_reclaim		17	/* To be reclaimed asap */
-#define PG_nosave_free		18	/* Used for system suspend/resume */
 #define PG_buddy		19	/* Page is free, on buddy lists */
 
 /* PG_owner_priv_1 users should have descriptive aliases */
@@ -214,16 +212,6 @@ static inline void SetPageUptodate(struc
 		ret;							\
 	})
 
-#define PageNosave(page)	test_bit(PG_nosave, &(page)->flags)
-#define SetPageNosave(page)	set_bit(PG_nosave, &(page)->flags)
-#define TestSetPageNosave(page)	test_and_set_bit(PG_nosave, &(page)->flags)
-#define ClearPageNosave(page)		clear_bit(PG_nosave, &(page)->flags)
-#define TestClearPageNosave(page)	test_and_clear_bit(PG_nosave, &(page)->flags)
-
-#define PageNosaveFree(page)	test_bit(PG_nosave_free, &(page)->flags)
-#define SetPageNosaveFree(page)	set_bit(PG_nosave_free, &(page)->flags)
-#define ClearPageNosaveFree(page)		clear_bit(PG_nosave_free, &(page)->flags)
-
 #define PageBuddy(page)		test_bit(PG_buddy, &(page)->flags)
 #define __SetPageBuddy(page)	__set_bit(PG_buddy, &(page)->flags)
 #define __ClearPageBuddy(page)	__clear_bit(PG_buddy, &(page)->flags)
-
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