From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pop.scorch.co.nz ([203.167.210.162] helo=firstline.co.nz) by canuck.infradead.org with smtp (Exim 4.63 #1 (Red Hat Linux)) id 1HMrxI-0002xV-DH for linux-mtd@lists.infradead.org; Thu, 01 Mar 2007 15:32:51 -0500 From: Charles Manning To: linux-mtd@lists.infradead.org Subject: Re: JFFS2 Max Flash Size? Date: Fri, 2 Mar 2007 09:37:15 +1300 References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703020937.15812.manningc2@actrix.gen.nz> Cc: "Johnson, Charles F" List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thursday 01 March 2007 10:17, Johnson, Charles F wrote: > I've heard there is scalability issues with JFFS2 with large flash > sizes. So my question on this list is for a NAND flash design, is > there a maximum size that JFFS2 can handle ?? 4GB, 8GB, ???? I don't know where JFFS2 hits the wall, theoretically or practically, but I do know that people are using YAFFS on 6GB partitions. YAFFS does use u32s internally but only thinks in pages and 32-bits worth of pages go a long way. You'll hit practical limits (like RAM required) long before that. -- Charles