linux-kernel - Re: [2.6 patch] mm/migrate.c: cleanups

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Message-Id: <20070802191502.B7A6.Y-GOTO@jp.fujitsu.com>
Date:	Thu, 02 Aug 2007 19:27:13 +0900
From:	Yasunori Goto <y-goto@...fujitsu.com>
To:	Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Christoph Lameter <clameter@....com>, linux-kernel@...r.kernel.org,
	Hiroyuki KAMEZAWA <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [2.6 patch] mm/migrate.c: cleanups

Sorry for late response.

But, this patch is the cause of compile error of memory unplug code of
2.6.23-rc1-mm2. It uses putback_lru_pages(). 
Don't make it static please... :-(

Bye.

----
 CC      mm/memory_hotplug.o
mm/memory_hotplug.c: In function ‘do_migrate_range’:
mm/memory_hotplug.c:402: error: implicit declaration of function ‘putback_lru_pages’
make[1]: *** [mm/memory_hotplug.o] Error 1

----


> This patch contains the following cleanups:
> - every file should include the headers containing the prototypes for
>   its global functions
> - make the needlessly global putback_lru_pages() static
> 
> Signed-off-by: Adrian Bunk <bunk@...sta.de>
> Acked-by: Christoph Lameter <clameter@....com>
> 
> ---
> 
> This patch has been sent on:
> - 6 Jul 2007
> 
>  include/linux/migrate.h |    2 --
>  mm/migrate.c            |    3 ++-
>  2 files changed, 2 insertions(+), 3 deletions(-)
> 
> --- linux-2.6.22-rc6-mm1/include/linux/migrate.h.old	2007-07-05 17:10:01.000000000 +0200
> +++ linux-2.6.22-rc6-mm1/include/linux/migrate.h	2007-07-05 17:10:10.000000000 +0200
> @@ -26,7 +26,6 @@
>  }
>  
>  extern int isolate_lru_page(struct page *p, struct list_head *pagelist);
> -extern int putback_lru_pages(struct list_head *l);
>  extern int migrate_page(struct address_space *,
>  			struct page *, struct page *);
>  extern int migrate_pages(struct list_head *l, new_page_t x, unsigned long);
> @@ -44,7 +43,6 @@
>  
>  static inline int isolate_lru_page(struct page *p, struct list_head *list)
>  					{ return -ENOSYS; }
> -static inline int putback_lru_pages(struct list_head *l) { return 0; }
>  static inline int migrate_pages(struct list_head *l, new_page_t x,
>  		unsigned long private) { return -ENOSYS; }
>  
> --- linux-2.6.22-rc6-mm1/mm/migrate.c.old	2007-07-05 17:10:16.000000000 +0200
> +++ linux-2.6.22-rc6-mm1/mm/migrate.c	2007-07-05 17:11:43.000000000 +0200
> @@ -28,6 +28,7 @@
>  #include <linux/mempolicy.h>
>  #include <linux/vmalloc.h>
>  #include <linux/security.h>
> +#include <linux/syscalls.h>
>  
>  #include "internal.h"
>  
> @@ -101,7 +102,7 @@
>   *
>   * returns the number of pages put back.
>   */
> -int putback_lru_pages(struct list_head *l)
> +static int putback_lru_pages(struct list_head *l)
>  {
>  	struct page *page;
>  	struct page *page2;
> 
> -
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-- 
Yasunori Goto 


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