linux-kernel - Re: [PATCH 0/6 v7] overlay filesystem

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Message-ID: <AANLkTikouwE+3ysKrnubHLG=egW9=GtYZMWQwTCSDoEr@mail.gmail.com>
Date:	Tue, 22 Mar 2011 11:27:45 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Felix Fietkau <nbd@...nwrt.org>
Cc:	Miklos Szeredi <miklos@...redi.hu>, viro@...iv.linux.org.uk,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, apw@...onical.com, neilb@...e.de
Subject: Re: [PATCH 0/6 v7] overlay filesystem - request for inclusion

On Tue, Mar 22, 2011 at 11:22 AM, Felix Fietkau <nbd@...nwrt.org> wrote:
>
> We're using it in OpenWrt (an Embedded Linux distribution) for devices
> with tiny amounts of flash for the entire system (e.g. 4 MB).
> We're using it to provide a writable on-flash root filesystem with
> squashfs for the read-only part and jffs2 for the writable overlay. This
> saves some precious flash space compared to using only jffs2, and it
> makes it easy for users to reset their device to defaults without having
> to reflash.
> With a backport of v6 of this series + my fixes that went into v7 this
> is working quite well on 2.6.37 and 2.6.38 - I'm using it on a few
> wireless access points at home.

Ok - sounds like an eminently sane and reasonable usage scenario.

Al?

                        Linus
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