linux-kernel - Re: Fwd: Control page reclaim granularity

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Message-ID: <CAFPAmTSR_Lvsi2+Uid3a9RQK5bBnN3vD_cje6o02f-gBusCJHQ@mail.gmail.com>
Date:	Tue, 13 Mar 2012 13:34:39 +0530
From:	Kautuk Consul <consul.kautuk@...il.com>
To:	Kautuk Consul <consul.kautuk@...il.com>, minchan@...nel.org,
	riel@...hat.com, kosaki.motohiro@...fujitsu.com,
	Zheng Liu <wenqing.lz@...bao.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: Fwd: Control page reclaim granularity

>
> Hi Kautuk,
>
> IMHO, running application with root privilege is too dangerous.  We
> should avoid it.
>

I agree, but that's not my point.

All I'm saying is that we probably don't want to give normal
unprivileged usermode apps
the capability to set the mapping to AS_UNEVICTABLE as anyone can then
write an application
that hogs memory without allowing the kernel to free it through memory reclaim.
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