lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 5 Mar 2012 09:17:19 +0900 From: Daisuke Nishimura <nishimura@....nes.nec.co.jp> To: Naoya Horiguchi <n-horiguchi@...jp.nec.com> Cc: Daisuke Nishimura <nishimura@....nes.nec.co.jp>, linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>, Andrea Arcangeli <aarcange@...hat.com>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, Hillf Danton <dhillf@...il.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH] memcg: fix mapcount check in move charge code for anonymous page Hi, Horiguchi-san. On Fri, 2 Mar 2012 15:35:08 -0500 Naoya Horiguchi <n-horiguchi@...jp.nec.com> wrote: > Currently charge on shared anonyous pages is supposed not to moved > in task migration. To implement this, we need to check that mapcount > 1, > instread of > 2. So this patch fixes it. > > Signed-off-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com> > --- > mm/memcontrol.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git linux-next-20120228.orig/mm/memcontrol.c linux-next-20120228/mm/memcontrol.c > index b6d1bab..785f6d3 100644 > --- linux-next-20120228.orig/mm/memcontrol.c > +++ linux-next-20120228/mm/memcontrol.c > @@ -5102,7 +5102,7 @@ static struct page *mc_handle_present_pte(struct vm_area_struct *vma, > return NULL; > if (PageAnon(page)) { > /* we don't move shared anon */ > - if (!move_anon() || page_mapcount(page) > 2) > + if (!move_anon() || page_mapcount(page) > 1) > return NULL; > } else if (!move_file()) > /* we ignore mapcount for file pages */ > -- > 1.7.7.6 > Sorry, it's my fault.. Thank you for catching this. Reviewed-by: Daisuke Nishimura <nishimura@....nes.nec.co.jp> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists