linux-kernel - Re: RFC: named anonymous vmas

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Message-ID: <20130622103158.GA16304@infradead.org>
Date:	Sat, 22 Jun 2013 03:31:58 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Colin Cross <ccross@...gle.com>
Cc:	lkml <linux-kernel@...r.kernel.org>, Linux-MM <linux-mm@...ck.org>,
	Android Kernel Team <kernel-team@...roid.com>,
	John Stultz <john.stultz@...aro.org>
Subject: Re: RFC: named anonymous vmas

On Fri, Jun 21, 2013 at 04:42:41PM -0700, Colin Cross wrote:
> ranges, which John Stultz has been implementing.  The second is
> anonymous shareable memory without having a world-writable tmpfs that
> untrusted apps could fill with files.

I still haven't seen any explanation of what ashmem buys over a shared
mmap of /dev/zero in that respect, btw.

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