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=-14.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 29B79C433DB for ; Wed, 3 Feb 2021 11:18:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DBB4B64F61 for ; Wed, 3 Feb 2021 11:18:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234043AbhBCLSg (ORCPT ); Wed, 3 Feb 2021 06:18:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:56516 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233878AbhBCLSb (ORCPT ); Wed, 3 Feb 2021 06:18:31 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7224F64F61 for ; Wed, 3 Feb 2021 11:17:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1612351070; bh=dkb2APu9lTa6pco7G8JNg4XQAE6Hhy/2dB++B59CIBY=; h=From:To:Subject:Date:From; b=fpE2yFiUw0w0u62vzYMXwPVlYhc6X5M9uKMqkOMd3pGz4p95zz6GQ/ktGLmKFTIK8 hX1fMKvBQ/j6OcD92QlucAEfMMeQqMxGeKIMbY8J3HfGa0Ndn7/AKMNeBuEm7bPTEC PlK7+eyllpONo7lY8nUeVzsA1yVjmOGufKb1A/NUu59pFaY/q4D4602tPS18KnfsUc A1TXbRLD+XNUqxAJcYGCtq0MxiDFSK+uehCuIYVoE/ELm6BjzxdW8Spn41Viq5NO0o GwlhLTHxImya4IERVGgtcCiF17eJ5k0+GrT2Q/C/9iW5FbqA1uo0dcOIUkMmyEwTtL eOOgBmTLf8v6Q== From: fdmanana@kernel.org To: linux-btrfs@vger.kernel.org Subject: [PATCH 0/4] btrfs: fix a couple swapfile support bugs Date: Wed, 3 Feb 2021 11:17:43 +0000 Message-Id: X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Filipe Manana The following patchset fixes 2 bugs with the swapfile support, where we can end up falling back to COW when writing to an active swapfile. As a bonus, it makes the NOCOW write patch, for both buffered and direct IO, more efficient by avoiding doing repeated worked when checking if the target block group is read-only. Filipe Manana (4): btrfs: avoid checking for RO block group twice during nocow writeback btrfs: fix race between writes to swap files and scrub btrfs: remove no longer used function btrfs_extent_readonly() btrfs: fix race between swap file activation and snapshot creation fs/btrfs/block-group.c | 33 ++++++++++++++++++++++++++++- fs/btrfs/block-group.h | 9 ++++++++ fs/btrfs/ctree.h | 6 +++++- fs/btrfs/extent-tree.c | 13 ------------ fs/btrfs/inode.c | 47 ++++++++++++++++++++++++++++++++++-------- fs/btrfs/scrub.c | 9 +++++++- 6 files changed, 92 insertions(+), 25 deletions(-) -- 2.28.0