linux-kernel - Re: [RFC][PATCH -mm 6/7] memcg: make-mapping-null-before-calling-uncharge.patch

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20080822135743.cc07f7de.nishimura@mxp.nes.nec.co.jp>
Date:	Fri, 22 Aug 2008 13:57:43 +0900
From:	Daisuke Nishimura <nishimura@....nes.nec.co.jp>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	nishimura@....nes.nec.co.jp, LKML <linux-kernel@...r.kernel.org>,
	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	"yamamoto@...inux.co.jp" <yamamoto@...inux.co.jp>,
	ryov@...inux.co.jp, "linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [RFC][PATCH -mm 6/7] memcg:
 make-mapping-null-before-calling-uncharge.patch

> @@ -379,6 +377,15 @@ static void migrate_page_copy(struct pag
>  	ClearPagePrivate(page);
>  	set_page_private(page, 0);
>  	page->mapping = NULL;
You forget to remove this line :)

Thanks,
Daisuke Nishimura.

> +	/* page->mapping contains a flag for PageAnon() */
> +	if (PageAnon(page)) {
> +		/* This page is uncharged at try_to_unmap(). */
> +		page->mapping = NULL;
> +	} else {
> +		/* Obsolete file cache should be uncharged */
> +		page->mapping = NULL;
> +		mem_cgroup_uncharge_cache_page(page);
> +	}
>  
>  	/*
>  	 * If any waiters have accumulated on the new page then
> 
--
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/