From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2157884-1520521299-2-18226739857562650599 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no ("Email failed DMARC policy for domain") X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, FREEMAIL_FORGED_FROMDOMAIN 0.249, FREEMAIL_FROM 0.001, FREEMAIL_REPLYTO_END_DIGIT 0.25, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='com', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-IgnoreVacation: yes ("Email failed DMARC policy for domain") X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1520521298; b=CLNls6z37p0N9HlXqQORjxFqihpcVVLcFR2VN7C9UqKbv40 t5hbv7vR1LFYDul0XE4flUzF8to+oi2mE4uDo7GHhT8+245iFY2DQxcAdChg98Ez 4/UROfXlAt4HuRcJqTMneOuY8CorKtm4gDF83rIk0GqmUwLbHXXbvxhE9ABVI1Vq 3GlLEyaeMHgEmThvoSBCPWxa2hJC63UKuPwC3eZwmfKX3AMrA673HvyPaUhul0aO 7cQyyZCtuIVCWUM2qJI9yq7krvRPm90Od7YrZbGUFrI4VIk22mSO6nLXPrC+JPXq DvS/Q4yCSngXZw8vveQ37tTZjWCEnpn/ybul/sA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=message-id:subject:from:reply-to:to:cc :date:in-reply-to:references:content-type:mime-version :content-transfer-encoding:sender:list-id; s=arctest; t= 1520521298; bh=3g17Ex0JfXZQHlin12dIuIEMAVVc4fZuX/and/TS874=; b=a AWjmoU4mPhXMhSMqZVGjEafZmov/3hKkwoht+PvWOAddMFHny+NeCk2PliRxSWGL kIpO1tHuOxcz0NM+OxVSXzzkdT2NRFwBvsnYNlplPLZg+4QKehTnlPlD5mSoixGa Cm1UwQ07nruR96ILoxyoNk+T+B5J3rUyT8qIsLfNdaP9p3gDeYQ/rPYmaBA4ZOcN JACOpMVFZY/aeAI1ezEUhtTB70IjI2Ep5ROq5KUQs0nB3Fgf3d4zkhWvkPAZT/IG yF6fPzG5eE8vw2IhdqDAqVkKB16eu0r1m0c4xCdFnkTJkD1FsQ3qT0rvoCz4mRxz dkkGaNLUT3Dyuh78PdYdQ== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=fail (p=none,has-list-id=yes,d=none) header.from=gmail.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-category=clean score=-100 state=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=gmail.com header.result=pass header_is_org_domain=yes Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=fail (p=none,has-list-id=yes,d=none) header.from=gmail.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-category=clean score=-100 state=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=gmail.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756000AbeCHPBX (ORCPT ); Thu, 8 Mar 2018 10:01:23 -0500 Received: from mga03.intel.com ([134.134.136.65]:18914 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755468AbeCHPBV (ORCPT ); Thu, 8 Mar 2018 10:01:21 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,441,1515484800"; d="scan'208";a="26310555" Message-ID: <1520521275.20980.41.camel@gmail.com> Subject: Re: [PATCH] ubi: Reject MLC NAND From: Artem Bityutskiy Reply-To: dedekind1@gmail.com To: Richard Weinberger , Linus Walleij Cc: linux-mtd@lists.infradead.org, "linux-kernel@vger.kernel.org" , Cyrille Pitchen , Mark Vasut , Boris BREZILLON , Brian Norris , David Woodhouse , tharvey@gateworks.com, stable , Ulf Hansson Date: Thu, 08 Mar 2018 17:01:15 +0200 In-Reply-To: <3797589.z8fAhu5iDP@blindfold> References: <20180303104554.5958-1-richard@nod.at> <3797589.z8fAhu5iDP@blindfold> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.5 (3.26.5-1.fc27) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Thu, 2018-03-08 at 15:43 +0100, Richard Weinberger wrote: > As stated by David Woodhouse, it was a huge mistake by UBI to not > reject MLC > NAND from the very beginning. Correction: when we were developing UBI/UBIFS and upstreamed them, MLC was widely used yet we did not really know about it. So there was nothing to reject yet. The mistake is that we did not add the reject timely. When people started reporting MLC issues we were answering that UBI/UBIFS stack needs more work to make MLC safe to use, and we hoped someone would do the work. Artem.