From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga09.intel.com ([134.134.136.24]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zs8on-0002lm-FL for linux-mtd@lists.infradead.org; Fri, 30 Oct 2015 12:30:06 +0000 Message-ID: <1446208181.6126.79.camel@gmail.com> Subject: Re: UBI/UBIFS: dealing with MLC's paired pages From: Artem Bityutskiy Reply-To: dedekind1@gmail.com To: Richard Weinberger , Boris Brezillon Cc: linux-mtd@lists.infradead.org, David Woodhouse , Brian Norris , Andrea Scian , Iwo Mergler , "Jeff Lauruhn (jlauruhn)" , Bean Huo =?UTF-8?Q?=E9=9C=8D=E6=96=8C=E6=96=8C?= "\"\"(beanhuo)\"\"" Date: Fri, 30 Oct 2015 14:29:41 +0200 In-Reply-To: <56335BB7.1020403@nod.at> References: <20150917152240.757c9e90@bbrezillon> <20151023101406.6d1490e5@bbrezillon> <1446035085.12536.71.camel@gmail.com> <20151030091521.439f436b@bbrezillon> <1446196090.6126.48.camel@gmail.com> <20151030104537.2196c4a8@bbrezillon> <1446205395.6126.69.camel@gmail.com> <56335BB7.1020403@nod.at> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, 2015-10-30 at 12:59 +0100, Richard Weinberger wrote: > That is a valid concern. > But to me the idea sounds promising and is worth a try. > We will stress test it and figure how much the actual overhead is. Well, for me the question of "do we double-write or try to do a better job" is more of a fundamental question, not a concern. Right now I personally do not share the opinion that doing a better job is hard, and double write is easy. I may be wrong though. So for me it does not look like - "hey, we'll just write twice, it is worth a try" is a good starting point. And then "hey, we did not try to do a better job, so we write twice, let's have this upstream" is a strong position.