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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 D6773C3A589 for ; Sun, 18 Aug 2019 15:59:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9E7DC20851 for ; Sun, 18 Aug 2019 15:59:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Y6gYv1U3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726089AbfHRP7o (ORCPT ); Sun, 18 Aug 2019 11:59:44 -0400 Received: from mail-ed1-f68.google.com ([209.85.208.68]:35587 "EHLO mail-ed1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725786AbfHRP7o (ORCPT ); Sun, 18 Aug 2019 11:59:44 -0400 Received: by mail-ed1-f68.google.com with SMTP id w20so9116485edd.2 for ; Sun, 18 Aug 2019 08:59:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=YtQgJT4A494ui6fKTGfhBmRclNb93UrWDKY2hAFB+k0=; b=Y6gYv1U3OAAC3iCSlTkDucEcgde+5dSj+cWQU4xVBz20xWr1xp6L9DXeJ9mUQCkHJh MpAJVdafaECCC8ZhPuEBUd8titt9NTAIvw2QOkAeNJS7TcwABnE3pDOHpqUC/VIrEaZu FDhOMgCljVp/rcNzUYv6QAlvgr4ciMynWuzYErb2+dqZ8H3xB5gqjzmqT8BKlvly76pA WcqAvfYnsyKICgrQanWJutLxWDdfpjpwMZ4jL7tcjzsyq57N7YdoX5r9b69dwWd5x30p m3XEyM1PUyvydahmvmwweBsXuxaBgdqO4BuKGikfvA0HDD/nE75PPnrvuHLmslLvFZxS BY5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :mime-version:content-disposition:user-agent; bh=YtQgJT4A494ui6fKTGfhBmRclNb93UrWDKY2hAFB+k0=; b=ZDKhP6fjhkmKrmqoR41ecGDXVUacgvgfyz2p3Vwjh9BylD9Cb5TrE9Z85bt2eEW4gp CC4yveRukD2MiasUW7Q+VNpFFKmt84fguzeZsnaVmKVadgnkKXpq0W8Z4cUpRqkmwqiI mPxm3t4qeXwUlVC5ScYN6Nk8TR6OT6wA9SG7MSkJB6Ev9RPNACd7BjtiKUo4ZZZnRQxT Oxy4HIWjIeap/0a1zJ2zMJWAk4VMp2eNLN2WBjK+yqSXvBIq/89igWNfrYvPPdx0LzpO BtUQ0MZC+CwPlvichHkcTknrNcCwKi+XDzoLothK80mR7lESPXXZD3ctTC1P7WyjSgvV j10w== X-Gm-Message-State: APjAAAUk6aAf4Xc8WnaB1RjtHepS6VpRoal95BqviJGB4s2DXaOFCpMi KP89ANkO2bOgUeCrVgywNSg= X-Google-Smtp-Source: APXvYqw48WKeGICutTb+RMvs5fZM9ahepU3aXgbUsKlm8lRZy6FUoJj2ptG627uA0qJuXRZrmP8ORg== X-Received: by 2002:a17:906:c669:: with SMTP id ew9mr17858117ejb.217.1566143982421; Sun, 18 Aug 2019 08:59:42 -0700 (PDT) Received: from eldamar (80-218-24-251.dclient.hispeed.ch. [80.218.24.251]) by smtp.gmail.com with ESMTPSA id m23sm797415ejj.61.2019.08.18.08.59.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 18 Aug 2019 08:59:41 -0700 (PDT) Date: Sun, 18 Aug 2019 17:59:41 +0200 From: Salvatore Bonaccorso To: Greg Kroah-Hartman , Sasha Levin , Mike Snitzer Cc: stable@vger.kernel.org, Alasdair Kergon , dm-devel@redhat.com, Chris Hofstaedtler Subject: Backport request for bcb44433bba5 ("dm: disable DISCARD if the underlying storage no longer supports it") Message-ID: <20190818155941.GA26766@eldamar.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Hi In Debian bug https://bugs.debian.org/934331 ran into issues which match the upstream commit bcb44433bba5 ("dm: disable DISCARD if the underlying storage no longer supports it"). This commit was CC'ed to stable, but only got applied in v5.0.8 (and later on backported by Ben Hutchings to v3.16.72). Mike, I have not checked how easily that would be for older stable versions, but can the backport be considered for versions down to 4.9? Apparently Ben did succeed with some changes needed. To 4.19 it should apply with a small conflict in drivers/md/dm-core.h AFAICS. Regards, Salvatore