linux-kernel - [PATCH] fix2 to putback_lru_page()/unevictable page handling rework v3

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Date:	Tue, 24 Jun 2008 13:29:32 -0400
From:	Lee Schermerhorn <Lee.Schermerhorn@...com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-mm <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Rik van Riel <riel@...hat.com>
Subject: [PATCH] fix2 to putback_lru_page()/unevictable page handling
	rework v3

PATCH revert shmem_lock() prototypes to return int

Against: 26-rc5-mm3 with Kosaki Motohiro's splitlru unevictable lru
fixes.

Fix to putback_lru_page()/unevictable page handling rework v3 patch.

The subject patch reverted a prior change to shmem_lock() to return a
struct address_space pointer back to returning an int.  This patch
updates the prototypes in mm.h to match.  

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@...com>

 include/linux/mm.h |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

Index: linux-2.6.26-rc5-mm3/include/linux/mm.h
===================================================================
--- linux-2.6.26-rc5-mm3.orig/include/linux/mm.h	2008-06-24 12:54:41.000000000 -0400
+++ linux-2.6.26-rc5-mm3/include/linux/mm.h	2008-06-24 13:25:29.000000000 -0400
@@ -706,13 +706,12 @@ static inline int page_mapped(struct pag
 extern void show_free_areas(void);
 
 #ifdef CONFIG_SHMEM
-extern struct address_space *shmem_lock(struct file *file, int lock,
-					struct user_struct *user);
+extern int shmem_lock(struct file *file, int lock, struct user_struct *user);
 #else
-static inline struct address_space *shmem_lock(struct file *file, int lock,
+static inline int shmem_lock(struct file *file, int lock,
 					struct user_struct *user)
 {
-	return NULL;
+	return 0;
 }
 #endif
 struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags);


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