From: Christoph Hellwig <hch@infradead.org>
To: Alex Elsayed <eternaleye@gmail.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: RFC: named anonymous vmas
Date: Mon, 24 Jun 2013 04:48:32 -0700 [thread overview]
Message-ID: <20130624114832.GA9961@infradead.org> (raw)
In-Reply-To: <kq4v0b$p8p$3@ger.gmane.org>
On Sat, Jun 22, 2013 at 12:47:29PM -0700, Alex Elsayed wrote:
> Couldn't this be done by having a root-only tmpfs, and having a userspace
> component that creates per-app directories with restrictive permissions on
> startup/app install? Then each app creates files in its own directory, and
> can pass the fds around.
Honestly having a device that allows passing fds around that can be
mmaped sounds a lot simpler. I have to admit that I expect /dev/zero
to do this, but looking at the code it creates new file structures
at ->mmap time which would defeat this.
next prev parent reply other threads:[~2013-06-24 11:48 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-21 23:42 RFC: named anonymous vmas Colin Cross
2013-06-22 5:12 ` Kyungmin Park
2013-06-22 5:20 ` Colin Cross
2013-06-22 10:31 ` Christoph Hellwig
2013-06-22 17:30 ` Colin Cross
[not found] ` <kq4v0b$p8p$3@ger.gmane.org>
2013-06-24 11:48 ` Christoph Hellwig [this message]
2013-06-24 17:26 ` Colin Cross
2013-06-24 23:45 ` John Stultz
2013-07-14 0:57 ` Sam Ben
2013-08-01 8:29 ` Christoph Hellwig
2013-08-01 8:36 ` Rich Felker
2013-08-02 15:11 ` Christoph Hellwig
2013-08-03 23:54 ` KOSAKI Motohiro
2013-07-14 0:27 ` Sam Ben
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