lkml.org 
[lkml]   [2008]   [Jul]   [1]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateTue, 1 Jul 2008 16:34:35 +0900
From"MinChan Kim" <>
SubjectRe: [PATCH -mm] split_lru: fix pagevec_move_tail() doesn't treat unevictable page
On Tue, Jul 1, 2008 at 4:01 PM, KOSAKI Motohiro
<kosaki.motohiro@jp.fujitsu.com> wrote:
> even under writebacking, page can move to unevictable list.
> so shouldn't pagevec_move_tail() check unevictable?
>
Hi, Kosaki-san.

I can't understand this race situation.
How the page can move to unevictable list while it is under writeback?

Could you explain for me ? :)

> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
>
> ---
>  mm/swap.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> Index: b/mm/swap.c
> ===================================================================
> --- a/mm/swap.c
> +++ b/mm/swap.c
> @@ -116,7 +116,7 @@ static void pagevec_move_tail(struct pag
>                        zone = pagezone;
>                        spin_lock(&zone->lru_lock);
>                }
> -               if (PageLRU(page) && !PageActive(page)) {
> +               if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
>                        int lru = page_is_file_cache(page);
>                        list_move_tail(&page->lru, &zone->lru[lru].list);
>                        pgmoved++;
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
>



-- 
Kinds regards,
MinChan Kim


\
 
 \ /
  Last update: 2008-07-01 09:37    [from the cache]
©2003-2008