From patchwork Tue Nov 26 03:14:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Goldwyn Rodrigues X-Patchwork-Id: 11261341 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2AC22109A for ; Tue, 26 Nov 2019 03:15:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0F3792071A for ; Tue, 26 Nov 2019 03:15:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727149AbfKZDPU (ORCPT ); Mon, 25 Nov 2019 22:15:20 -0500 Received: from mx2.suse.de ([195.135.220.15]:34090 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726016AbfKZDPT (ORCPT ); Mon, 25 Nov 2019 22:15:19 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 4163DAE00; Tue, 26 Nov 2019 03:15:18 +0000 (UTC) From: Goldwyn Rodrigues To: linux-btrfs@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, hch@infradead.org, darrick.wong@oracle.com, fdmanana@kernel.org Subject: [PATCH 0/5 v2] btrfs direct-io using iomap Date: Mon, 25 Nov 2019 21:14:51 -0600 Message-Id: <20191126031456.12150-1-rgoldwyn@suse.de> X-Mailer: git-send-email 2.16.4 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This is an effort to use iomap for direct I/O in btrfs. This would change the call from __blockdev_direct_io() to iomap_dio_rw(). The main objective is to lose the buffer head and use bio defined by iomap code, and hopefully to use more of generic-FS codebase. These patches are based on xfs/iomap-for-next, though I tested it against the patches on xfs/iomap-for-next on top of v5.4 (there are no changes to existing iomap patches). I have tested it against xfstests/btrfs. Changes since v1 - Incorporated back the efficiency change for inode locking - Review comments about coding style and git comments - Merge related patches into one - Direct read to go through btrfs_direct_IO() - Removal of no longer used function dio_end_io() fs/btrfs/ctree.h | 2 fs/btrfs/extent_io.c | 33 ++++----- fs/btrfs/file.c | 15 +++- fs/btrfs/inode.c | 171 +++++++++++++++++++++++--------------------------- fs/direct-io.c | 19 ----- fs/iomap/direct-io.c | 14 ++-- include/linux/fs.h | 3 include/linux/iomap.h | 2 mm/filemap.c | 13 ++- 9 files changed, 131 insertions(+), 141 deletions(-) --- Goldwyn