Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755956AbZFVWjP (ORCPT ); Mon, 22 Jun 2009 18:39:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751585AbZFVWi7 (ORCPT ); Mon, 22 Jun 2009 18:38:59 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:33718 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751551AbZFVWi6 (ORCPT ); Mon, 22 Jun 2009 18:38:58 -0400 Date: Tue, 23 Jun 2009 00:38:55 +0200 From: Pavel Machek To: Tim Bird Cc: Marco , Jamie Lokier , Linux Embedded , Linux Kernel , Linux FS Devel , Daniel Walker Subject: Re: [PATCH 00/14] Pramfs: Persistent and protected ram filesystem Message-ID: <20090622223855.GA25996@elf.ucw.cz> References: <4A3E6F28.4090404@gmail.com> <20090621205245.GC3254@elf.ucw.cz> <2ea1731b0906212333r20deb71q2f021fc79bcc8a8e@mail.gmail.com> <20090622172003.GB21149@elf.ucw.cz> <4A3FBFF0.40006@am.sony.com> <20090622173704.GC21299@elf.ucw.cz> <4A3FC84A.6060608@gmail.com> <20090622204031.GA24236@elf.ucw.cz> <4A3FFC89.4070006@am.sony.com> <20090622215753.GA25434@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090622215753.GA25434@elf.ucw.cz> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1172 Lines: 28 On Mon 2009-06-22 23:57:53, Pavel Machek wrote: > On Mon 2009-06-22 14:50:01, Tim Bird wrote: > > Pavel Machek wrote: > > >> block of fast non-volatile RAM that need to access data on it using a > > >> standard filesytem interface." > > > > > > Turns a block of fast RAM into 13MB/sec disk. Hmm. I believe you are > > > better with ext2. > > > > Not if you want the RAM-based filesystem to persist over a kernel > > invocation. > > Yes, you'll need to code Persistent, RAM-based _block_device_. More politely said: "I believe you would be better off modifying ramdisk to include the functionality for persistence." New filesystem should not really be neccessary. ext2 for performance, ext3 if you need robustness from journalling, maybe something else makes sense, too. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/