linux-kernel - Re: [RFC] persistent store

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Message-ID: <AANLkTimqn+qS5RxETz1DznsMDS4gZBGxkLkdCgTQ7qG-@mail.gmail.com>
Date:	Mon, 22 Nov 2010 19:24:12 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Tony Luck <tony.luck@...el.com>
Cc:	Huang Ying <ying.huang@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"mingo@...e.hu" <mingo@...e.hu>, "greg@...ah.com" <greg@...ah.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	Linux Embedded <linux-embedded@...r.kernel.org>
Subject: Re: [RFC] persistent store

On Mon, Nov 22, 2010 at 17:55, Tony Luck <tony.luck@...el.com> wrote:
> On Sun, Nov 21, 2010 at 5:59 PM, Huang Ying <ying.huang@...el.com> wrote:
>> This patch provides a general "read" interface for kmsg_dumper and some
>> other persistent storage users. Another possible choice is to just
>> extend the original interface to add persistent store support. For
>> example, we can add a "read" function in kmsg_dumper, and output the
>> content of persistent store via extend /dev/kmsg via prefix every line
>> comes from persistent store or adding some "ioctl" to do that. (But it
>> seems that nobody likes "ioctl").
>
> In Linux (and Unix before it) "everything is a file" ... but this
> doesn't work very well if the file has internal structure (e.g.
> is made of records that can be individually changed or
> deleted).  A filesystem seems a much better model.

Any tangents with "pramfs: persistent and protected RAM filesystem"
on linux-embedded?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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