From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0806DC433E0 for ; Thu, 28 Jan 2021 09:01:49 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9D72B64DD1 for ; Thu, 28 Jan 2021 09:01:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9D72B64DD1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mU/2ffCh3V9kzWqpfeDgPnWEac6p9gyaRruCMGt0QnY=; b=2VNvEP0O6VOu3AX3MAf91dOX0 DdOcHwzXAy75LjzSOnYXBqKwGyk2chGRkQ9P4ZeRPXEqTAvFfcdL3wobH1Bn+9IoWaTr1GfqN0ZNg fPn5Vqj6797rc+D7usvwr4pidG6X8h+Yv416OPrbZKXBndc5KhON6JzJJXcNgtMC8zyEIG9LqGg/8 MzIDUU2M3e+fWUtKTCWLyKGJvl+Q58vSgLq4lFXeU8L2LMKy7Wtj6+hv74DUei7ABFqyKCpVDsaGr u4jfus2puC305VPB+Eaj9HEdUa2qbAlCZBk8m+Myv8OU3uL2oZSFVDjcTy9S2KVzQX4RRRhdRdcu+ 9pzi1sHhg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l53AQ-0006Z6-FE; Thu, 28 Jan 2021 09:00:42 +0000 Received: from relay9-d.mail.gandi.net ([217.70.183.199]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l53AM-0006YP-QB for linux-mtd@lists.infradead.org; Thu, 28 Jan 2021 09:00:40 +0000 X-Originating-IP: 86.210.203.150 Received: from xps13 (lfbn-tou-1-972-150.w86-210.abo.wanadoo.fr [86.210.203.150]) (Authenticated sender: miquel.raynal@bootlin.com) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id A1B11FF818; Thu, 28 Jan 2021 09:00:33 +0000 (UTC) Date: Thu, 28 Jan 2021 10:00:32 +0100 From: Miquel Raynal To: "Winkler, Tomas" Subject: Re: [PATCH] mtd: use refcount to prevent corruption Message-ID: <20210128100032.5eb542c6@xps13> In-Reply-To: References: <20210127200319.662842-1-tomas.winkler@intel.com> <9732911.325628.1611780400338.JavaMail.zimbra@nod.at> <1776363776.325713.1611782270873.JavaMail.zimbra@nod.at> <1665542284.336646.1611820031174.JavaMail.zimbra@nod.at> Organization: Bootlin X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210128_040039_051287_31F7AB11 X-CRM114-Status: GOOD ( 25.01 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Weinberger , linux-mtd , Vignesh Raghavendra , linux-kernel Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org SGkgVG9tYXMsCgoiV2lua2xlciwgVG9tYXMiIDx0b21hcy53aW5rbGVyQGludGVsLmNvbT4gd3Jv dGUgb24gVGh1LCAyOCBKYW4gMjAyMQowODo1Mzo0MyArMDAwMDoKCj4gPiBUb21hcywKPiA+IAo+ ID4gLS0tLS0gVXJzcHLDvG5nbGljaGUgTWFpbCAtLS0tLSAgCj4gPiA+PiA+PiBDYW4geW91IHBs ZWFzZSBleHBsYWluIGEgbGl0dGxlIG1vcmUgd2hhdCBkZXZpY2VzIGFyZSBpbnZvbHZlZD8KPiA+ ID4+ID4+IERvZXMgaXQgaW1wbGVtZW50IF9nZXRfZGV2aWNlKCkgYW5kIF9wdXRfZGV2aWNlKCk/ ICAKPiA+ID4+ID4gTm8gdGhpcyBpcyBub3QgY29ubmVjdGVkIHRvIHRob3NlIGhhbmRsZXJzIG9m IHRoZSB1bmRlcmx5aW5nIGRldmljZQo+ID4gPj4gPiBhbmQgdGhvc2Ugd29uJ3QgaGVscC4KPiA+ ID4+ID4gSSBoYXZlIGEgc3BpIGRldmljZSBwcm92aWRlZCBieSBNRkQgZnJhbWV3b3JrIHNvIGl0 IGNhbiBnbyBhd2F5IGFueXRpbWUuICAKPiA+ID4+Cj4gPiA+PiBDYW4gaXQgZ28gYXdheSBwaHlz aWNhbGx5IG9yIGp1c3QgaW4gc29mdHdhcmU/ICAKPiA+ID4gU29mdHdhcmUsIGJ1dCBzaW5jZSB0 aGlzIGlzIG1mZCBpdCdzIGJhc2ljYWxseSBob3RwbHVnLiBUaGUga2VybmVsIGlzCj4gPiA+IGNy YXNoaW5nIHdoZW4gSSBzaW11bGF0ZSBoYXJkd2FyZSBmYWlsdXJlLiAgCj4gPiA+Pgo+ID4gPj4g VXN1YWxseSB0aGUgcGF0dGVybiBpcyB0aGF0IHlvdSBtYWtlIHN1cmUgaW4gdGhlIGRldmljZSBk cml2ZXIgdGhhdAo+ID4gPj4gbm9ib2R5IGNhbiBvcnBoYW4gdGhlIE1URCB3aGlsZSBpdCBpcyBp biB1c2UuCj4gPiA+PiBlLmcuIGRyaXZlcnMvbXRkL3ViaS9nbHVlYmkuYyBkb2VzIHNvLiBJbiBf Z2V0X2RldmljZSgpIGl0IGdyYWJzIGEKPiA+ID4+IHJlZmVyZW5jZSBvbiB0aGUgdW5kZXJseWlu ZyBVQkkgdm9sdW1lIHRvIG1ha2Ugc3VyZSBpdCBjYW5ub3QgZ28gYXdheQo+ID4gPj4gd2hpbGUg dGhlIE1URCAob24gdG9wIG9mIFVCSSkgaXMgaW4gdXNlLiAgCj4gPiA+Cj4gPiA+IEkgY2FuIHRy eSB0aGF0IGlmIGl0IGhlbHBzLCBiZWNhdXNlIHdlIGFyZSBzaW11bGF0aW5nIHBvc3NpYmxlIGxv d2VyCj4gPiA+IGxldmVsIGNyYXNoLgo+ID4gPiBJbiBhbiBjYXNlIEkgYmVsaWV2ZSB0aGF0IHRo ZSBwcm9wZXIgcmVmY291dGluZyBpcyBtdWNoIG1vcmUgcm9idXN0Cj4gPiA+IHNvbHV0aW9uLCB0 aGFuIHRoZSBjdXJyZW50IG9uZS4KPiA+ID4gSSdkIGFwcHJlY2lhdGUgaWYgc29tZW9uZSBjYW4g cmV2aWV3IHRoZSBhY3R1YWwgaW1wbGVtZW50YXRpb24uICAKPiA+IAo+ID4gVGhpcyBoYXBwZW5z IHJpZ2h0IG5vdywgSSB0cnkgdG8gdW5kZXJzdGFuZCB3aHkgZXhhY3RseSB0aGUgY3VycmVudCB3 YXkgaXMgbm90Cj4gPiBnb29kIGluIGVub3VnaC4gOi0pCj4gPiAKPiA+IFlvdXIgYXBwcm9hY2gg bWFrZXMgc3VyZSB0aGF0IHRoZSBNVEQgaXRzZWxmIGRvZXMgbm90IGdvIGF3YXkgd2hpbGUgaXQg aGFzCj4gPiB1c2VycyBidXQgaG93IGRvZXMgdGhpcyBoZWxwIGluIHRoZSBjYXNlIHdoZXJlIHRo ZSB1bmRlcmx5aW5nIE1GRCBqdXN0Cj4gPiB2YW5pc2hlcz8KPiA+IFRoZSBNVEQgY2FuIGJlIGlu IHVzZSBhbmQgdGhlIE1GRCBjYW4gZ28gYXdheSB3aGlsZSBlLmcuIG10ZF9yZWFkKCkgb3Igc3Vj aAo+ID4gdGFrZXMgcGxhY2UuICAKPiAKPiBSZWFkIHdpbGwgZmFpbCwgYnV0IGtlcm5lbCB3b24n dCBjcmFzaCBvbiBhY2Nlc3MgdG8gbWVtb3J5IHRoYXQgd2FzIGZyZWVkLgoKQXMgUmljaGFyZCB3 YXMgc2F5aW5nLCB3ZSBhcmUgcmVhbGx5IG9wZW4gdG8gZW5oYW5jZSBNVEQgcmVmY291bnRpbmcu CgpIb3dldmVyLCB0aGUgaXNzdWUgeW91IGFyZSBmYWNpbmcgaXMsIElNSE8sIG5vdCByZWxhdGVk IHRvIE1URCBidXQgdG8KTUZELiBUaGVyZSBzaG91bGQgYmUgYSB3YXkgdG8gYXZvaWQgTUZEIHRv IHZhbmlzaCBieSB0YWtpbmcgYSByZWZlcmVuY2UKb2YgaXQgdGhyb3VnaCBtdGQtPl9nZXRfZGV2 aWNlKCkuIEkgZG9uJ3QgdGhpbmsgYWRkcmVzc2luZyB0aGUgY2FzZQp3aGVyZSBNRkQgdmFuaXNo ZXMgd2hpbGUgTVREIChhcyBhIHVzZXIpIGlzIHN0aWxsIGFjdGl2ZSBpcyB0aGUKcmlnaHQgYXBw cm9hY2guCgpUaGFua3MsCk1pcXXDqGwKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwpMaW51eCBNVEQgZGlzY3Vzc2lvbiBtYWlsaW5nIGxpc3QK aHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1tdGQvCg==