From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.newsguy.com ([74.209.136.69]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1RYMJU-0007NQ-8V for linux-mtd@lists.infradead.org; Wed, 07 Dec 2011 18:33:52 +0000 Message-ID: <4EDFB185.8030802@newsguy.com> Date: Wed, 07 Dec 2011 10:33:41 -0800 From: Mike Dunn MIME-Version: 1.0 To: Peter Horton Subject: Re: [PATCH v2] MTD: modify mtd api to return bitflip info on read operations References: <1322943640-11728-1-git-send-email-mikedunn@newsguy.com> <4EDB3295.6040201@bitbox.co.uk> <4EDB7B1D.60603@newsguy.com> <1323009827.9400.75.camel@sauron.fi.intel.com> <4EDB89E9.6070306@newsguy.com> <1323065234.2316.2.camel@koala> <4EDCF840.7050107@newsguy.com> <4EDCFAAC.90709@bitbox.co.uk> <4EDD142B.6090303@newsguy.com> <87hb1de5b6.fsf@free.fr> <4EDF350D.9030104@bitbox.co.uk> In-Reply-To: <4EDF350D.9030104@bitbox.co.uk> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-mtd@lists.infradead.org, Robert Jarzmik , dedekind1@gmail.com List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 12/07/2011 01:42 AM, Peter Horton wrote: > > It's not policy, it's a property of the NAND device. > I respectfully disagree. Device property is how error prone it is and its error correction capability. Policy is how cautious you want to be with regard to data integrity vis-a-vis erase block management. But it *is* a fine line, and one affects the other. Plus Ricard makes a good point about devices with other properties besides ecc strength that could potentially influence the policy decision. Thanks, Mike