linux-kernel - Re: [PATCH 00/14] Pramfs: Persistent and protected ram filesystem

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Message-ID: <4A3681C2.5010508@am.sony.com>
Date:	Mon, 15 Jun 2009 10:15:46 -0700
From:	Tim Bird <tim.bird@...sony.com>
To:	Marco <marco.stornelli@...il.com>
CC:	Linux FS Devel <linux-fsdevel@...r.kernel.org>,
	Linux Embedded <linux-embedded@...r.kernel.org>,
	linux-kernel@...r.kernel.org, Daniel Walker <dwalker@....ucsc.edu>
Subject: Re: [PATCH 00/14] Pramfs: Persistent and protected ram filesystem

Marco wrote:
> This is a second attempt at mainlining Pramfs. The first attempt was
> back in early 2004 by MontaVista. Since then the kernel code has almost
> been completely rewritten. So my first item on the list was porting the
> code on a recent kernel version. After that I added the XIP support.

It's very nice to see this technology revived.

Is the information at:
http://pramfs.sourceforge.net/
and
http://pramfs.sourceforge.net/pramfs-spec.html
still valid - particularly the latter?

It would be very nice to see this get mainlined.  I believe that
one of the main uses for this is to store crash information
over a reboot so the next kernel (not in crashing state) can have
a better chance of dealing with it.  As such, I think
it's important to keep the code paths for Pramfs short, synchronous,
and unentangled with other kernel systems (block IO, page cache, etc.).

Thanks,
 -- Tim

=============================
Tim Bird
Architecture Group Chair, CE Linux Forum
Senior Staff Engineer, Sony Corporation of America
=============================

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