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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,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 C99C8C433DB for ; Tue, 12 Jan 2021 01:09:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0CD422D58 for ; Tue, 12 Jan 2021 01:09:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731572AbhALBJa (ORCPT ); Mon, 11 Jan 2021 20:09:30 -0500 Received: from mail110.syd.optusnet.com.au ([211.29.132.97]:51494 "EHLO mail110.syd.optusnet.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731358AbhALBJ3 (ORCPT ); Mon, 11 Jan 2021 20:09:29 -0500 Received: from dread.disaster.area (pa49-179-167-107.pa.nsw.optusnet.com.au [49.179.167.107]) by mail110.syd.optusnet.com.au (Postfix) with ESMTPS id 5BB4211717A; Tue, 12 Jan 2021 12:07:50 +1100 (AEDT) Received: from discord.disaster.area ([192.168.253.110]) by dread.disaster.area with esmtp (Exim 4.92.3) (envelope-from ) id 1kz8A1-005WbE-Hb; Tue, 12 Jan 2021 12:07:49 +1100 Received: from dave by discord.disaster.area with local (Exim 4.94) (envelope-from ) id 1kz8A1-004qb2-AB; Tue, 12 Jan 2021 12:07:49 +1100 From: Dave Chinner To: linux-xfs@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, avi@scylladb.com, andres@anarazel.de Subject: [PATCH 3/6] xfs: factor out a xfs_ilock_iocb helper Date: Tue, 12 Jan 2021 12:07:43 +1100 Message-Id: <20210112010746.1154363-4-david@fromorbit.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210112010746.1154363-1-david@fromorbit.com> References: <20210112010746.1154363-1-david@fromorbit.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.3 cv=Ubgvt5aN c=1 sm=1 tr=0 cx=a_idp_d a=+wqVUQIkAh0lLYI+QRsciw==:117 a=+wqVUQIkAh0lLYI+QRsciw==:17 a=EmqxpYm9HcoA:10 a=Wfw2kvrMWTjfDHER2ywA:9 a=R76ju1TwCYIA:10 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org From: Christoph Hellwig Add a helper to factor out the nowait locking logical for the read/write helpers. Signed-off-by: Christoph Hellwig --- fs/xfs/xfs_file.c | 55 +++++++++++++++++++++++++---------------------- 1 file changed, 29 insertions(+), 26 deletions(-) diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 3ced2746db4d..4eb4555516e4 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -197,6 +197,23 @@ xfs_file_fsync( return error; } +static int +xfs_ilock_iocb( + struct kiocb *iocb, + unsigned int lock_mode) +{ + struct xfs_inode *ip = XFS_I(file_inode(iocb->ki_filp)); + + if (iocb->ki_flags & IOCB_NOWAIT) { + if (!xfs_ilock_nowait(ip, lock_mode)) + return -EAGAIN; + } else { + xfs_ilock(ip, lock_mode); + } + + return 0; +} + STATIC ssize_t xfs_file_dio_aio_read( struct kiocb *iocb, @@ -220,12 +237,9 @@ xfs_file_dio_aio_read( file_accessed(iocb->ki_filp); - if (iocb->ki_flags & IOCB_NOWAIT) { - if (!xfs_ilock_nowait(ip, XFS_IOLOCK_SHARED)) - return -EAGAIN; - } else { - xfs_ilock(ip, XFS_IOLOCK_SHARED); - } + ret = xfs_ilock_iocb(iocb, XFS_IOLOCK_SHARED); + if (ret) + return ret; ret = iomap_dio_rw(&args); xfs_iunlock(ip, XFS_IOLOCK_SHARED); @@ -246,13 +260,9 @@ xfs_file_dax_read( if (!count) return 0; /* skip atime */ - if (iocb->ki_flags & IOCB_NOWAIT) { - if (!xfs_ilock_nowait(ip, XFS_IOLOCK_SHARED)) - return -EAGAIN; - } else { - xfs_ilock(ip, XFS_IOLOCK_SHARED); - } - + ret = xfs_ilock_iocb(iocb, XFS_IOLOCK_SHARED); + if (ret) + return ret; ret = dax_iomap_rw(iocb, to, &xfs_read_iomap_ops); xfs_iunlock(ip, XFS_IOLOCK_SHARED); @@ -270,12 +280,9 @@ xfs_file_buffered_aio_read( trace_xfs_file_buffered_read(ip, iov_iter_count(to), iocb->ki_pos); - if (iocb->ki_flags & IOCB_NOWAIT) { - if (!xfs_ilock_nowait(ip, XFS_IOLOCK_SHARED)) - return -EAGAIN; - } else { - xfs_ilock(ip, XFS_IOLOCK_SHARED); - } + ret = xfs_ilock_iocb(iocb, XFS_IOLOCK_SHARED); + if (ret) + return ret; ret = generic_file_read_iter(iocb, to); xfs_iunlock(ip, XFS_IOLOCK_SHARED); @@ -622,13 +629,9 @@ xfs_file_dax_write( size_t count; loff_t pos; - if (iocb->ki_flags & IOCB_NOWAIT) { - if (!xfs_ilock_nowait(ip, iolock)) - return -EAGAIN; - } else { - xfs_ilock(ip, iolock); - } - + ret = xfs_ilock_iocb(iocb, iolock); + if (ret) + return ret; ret = xfs_file_aio_write_checks(iocb, from, &iolock); if (ret) goto out; -- 2.28.0