linux-kernel - Re: [PATCH 0/5] Some vmevent fixes...

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: <CAOJsxLGbX33TfGvMEzV4By=n8JojHcXV32FRueb3kmti38jBPQ@mail.gmail.com>
Date:	Tue, 5 Jun 2012 10:52:06 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
Cc:	Anton Vorontsov <cbouatmailru@...il.com>,
	Minchan Kim <minchan@...nel.org>,
	Leonid Moiseichuk <leonid.moiseichuk@...ia.com>,
	John Stultz <john.stultz@...aro.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	patches@...aro.org, kernel-team@...roid.com
Subject: Re: [PATCH 0/5] Some vmevent fixes...

On Mon, Jun 4, 2012 at 11:05 PM, KOSAKI Motohiro
<kosaki.motohiro@...il.com> wrote:
>> - On desktops, apps can drop their caches on demand if they want to
>>   and can avoid swap activity?
>
> In this case, fallocate(VOLATILE) is work more better.

For some cases, yes, but probably not for all.

For example, if userspace doesn't know about "about to swap real soon"
condition, it can continue to grow its caches making
fallocate(VOLATILE) pretty much useless.
--
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/