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Date: Thu, 17 May 2012 01:54:25 -0400
From: Christoph Hellwig <hch@infradead.org>
To: Eitan Adler <lists@eitanadler.com>
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Cc: Dag-Erling Sm??rgrav <des@des.no>, Adrian Chadd <adrian@freebsd.org>,
	d@delphij.net, freebsd-arch@freebsd.org
Subject: Re: Allow small amount of memory be mlock()'ed by unprivileged
 process?
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On Wed, May 16, 2012 at 06:36:18PM -0400, Eitan Adler wrote:
> On 16 May 2012 18:32, Adrian Chadd <adrian@freebsd.org> wrote:
> > .. what's to stop a fork() bomb from grabbing all pages?
> 
> <quote>+ possibly limiting the number of pages per user, ?? la
> maxprocperuid.</quote>

Linux has added a RLIMIT_MEMLOCK opcode for setrlimit that allows
controlling the amount of memory users can lock down, with a default
of a single page for unprivilegued processes.