linux-kernel - Re: [PATCH -mm 05/15] free swap space on swap-in/activation

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: <482990FC.3020303@mxp.nes.nec.co.jp>
Date:	Tue, 13 May 2008 22:00:44 +0900
From:	Daisuke Nishimura <nishimura@....nes.nec.co.jp>
To:	Rik van Riel <riel@...hat.com>
CC:	lee.schermerhorn@...com, akpm@...ux-foundation.org,
	kosaki.motohiro@...fujitsu.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm 05/15] free swap space on swap-in/activation

On 2008/05/12 22:33 +0900, Rik van Riel wrote:
> On Mon, 12 May 2008 20:21:32 +0900
> Daisuke Nishimura <nishimura@....nes.nec.co.jp> wrote:
> 
>> So, the intention of this patch is
>> not to free a swap space of swap cache that has already swapped in
>> and only used one process as do_swap_page() does,
>> but to free a swap space that is only used as a swap cache
>> (not used by any processes), right?
> 
> No.  The code should also free the swap space of pages that are
> mapped by processes, in order to free up swap space for other
> uses.  This only happens if vm_swap_full() is true.
> 

OK.

I thought that current code cannot free the swap space
of pages that are mapped by processes(and I think it cannot),
so I asked the intention of this patch for clarification.


Thanks,
Daisuke Nishimura.

--
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/