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=-10.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham 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 9DEFFC10F0E for ; Mon, 15 Apr 2019 21:20:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5963520880 for ; Mon, 15 Apr 2019 21:20:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=cisco.com header.i=@cisco.com header.b="E0xCPl0j" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726635AbfDOVU1 (ORCPT ); Mon, 15 Apr 2019 17:20:27 -0400 Received: from rcdn-iport-3.cisco.com ([173.37.86.74]:30176 "EHLO rcdn-iport-3.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725804AbfDOVU1 (ORCPT ); Mon, 15 Apr 2019 17:20:27 -0400 X-Greylist: delayed 425 seconds by postgrey-1.27 at vger.kernel.org; Mon, 15 Apr 2019 17:20:27 EDT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=404; q=dns/txt; s=iport; t=1555363227; x=1556572827; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=f/WdhfG3pTiRRVi/EJOmdgVJ9y2tz3vO4Xc70lk4d9o=; b=E0xCPl0jkp7sU7gur67dR/P1/f7ZSIM34CzTWbKBn/SAFmcen4QbHolf rxzj+0/HcDT4aiqDrK9esYo37EUdqWvpQGb3q8eZ/2BHT9R485G37Y2ex z3wynysWT80tMZNP+LUFLBHthX4X+YoUahf8n1K1dC+fYP3KU0eQbzbig k=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AHAAA687Rc/5RdJa1mGgEBAQEBAgE?= =?us-ascii?q?BAQEHAgEBAQGBUQUBAQEBCwGCEIFsjFKWY48BgXsQhG0ChXojNAkOAQMBAQo?= =?us-ascii?q?BAgECbSiFSwYyAUYQUVcHgzSBdRMBqn+KLhSBHgGGc4RWF4FAP4RhiiUDima?= =?us-ascii?q?IImCSSgmCB5ILDBqBeAGSeQEtizmUQ4FPOIFWcBWDKJBrH45TKoIoAQE?= X-IronPort-AV: E=Sophos;i="5.60,355,1549929600"; d="scan'208";a="536758931" Received: from rcdn-core-12.cisco.com ([173.37.93.148]) by rcdn-iport-3.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 15 Apr 2019 21:13:22 +0000 Received: from sjc-ads-2720.cisco.com (sjc-ads-2720.cisco.com [171.70.32.155]) by rcdn-core-12.cisco.com (8.15.2/8.15.2) with ESMTP id x3FLDLDD014016; Mon, 15 Apr 2019 21:13:21 GMT From: grygorii tertychnyi To: jaegeuk@kernel.org, gwendal@chromium.org Cc: xe-linux-external@cisco.com, axboe@kernel.dk, linux-block@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: [PATCH] loop: drop caches if offset or block_size are changed Date: Mon, 15 Apr 2019 14:13:21 -0700 Message-Id: <20190415211321.58681-1-gtertych@cisco.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Auto-Response-Suppress: DR, OOF, AutoReply X-Outbound-SMTP-Client: 171.70.32.155, sjc-ads-2720.cisco.com X-Outbound-Node: rcdn-core-12.cisco.com Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Jaegeuk, We also observed an issue with this patch. After heavely working with image.bin (haxdump with different offsets) next mount call fails: # mount -o ro,loop,offset=45967633 -t squashfs image.bin /tmp/gi45 mount: image.bin: failed to setup loop device: Resource temporarily unavailable # dmesg | tail -n1 loop_set_status: loop2 () has still dirty pages (nrpages=1) -- Grygorii