From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [PATCH 00/14] Pramfs: Persistent and protected ram filesystem Date: Tue, 23 Jun 2009 00:38:55 +0200 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 Cc: Marco , Jamie Lokier , Linux Embedded , Linux Kernel , Linux FS Devel , Daniel Walker To: Tim Bird Return-path: Content-Disposition: inline In-Reply-To: <20090622215753.GA25434@elf.ucw.cz> Sender: linux-embedded-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org 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