From patchwork Thu Sep 28 18:54:25 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Goldwyn Rodrigues X-Patchwork-Id: 9976673 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 534C6603F2 for ; Thu, 28 Sep 2017 18:54:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 463A929704 for ; Thu, 28 Sep 2017 18:54:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3AFF729706; Thu, 28 Sep 2017 18:54:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E4D9529704 for ; Thu, 28 Sep 2017 18:54:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750821AbdI1Syf (ORCPT ); Thu, 28 Sep 2017 14:54:35 -0400 Received: from mx2.suse.de ([195.135.220.15]:53004 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750775AbdI1Sye (ORCPT ); Thu, 28 Sep 2017 14:54:34 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 757B3AABA; Thu, 28 Sep 2017 18:54:33 +0000 (UTC) From: Goldwyn Rodrigues To: linux-xfs@vger.kernel.org Cc: david@fromorbit.com, Goldwyn Rodrigues Subject: [PATCH 2/3] io/pwrite: Add RWF_NOWAIT to pwritev2() Date: Thu, 28 Sep 2017 13:54:25 -0500 Message-Id: <20170928185426.9070-2-rgoldwyn@suse.de> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20170928185426.9070-1-rgoldwyn@suse.de> References: <20170928185426.9070-1-rgoldwyn@suse.de> Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Goldwyn Rodrigues This allows to make pwritev2() calls with RWF_NOWAIT, which would fail in case the call blocks. Signed-off-by: Goldwyn Rodrigues Reviewed-by: Darrick J. Wong --- io/pwrite.c | 8 +++++++- man/man8/xfs_io.8 | 6 ++++++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/io/pwrite.c b/io/pwrite.c index 82eaf827..8289c3ee 100644 --- a/io/pwrite.c +++ b/io/pwrite.c @@ -52,6 +52,9 @@ pwrite_help(void) " (heh, zorry, the -s/-S arguments were already in use in pwrite)\n" #ifdef HAVE_PWRITEV " -V N -- use vectored IO with N iovecs of blocksize each (pwritev)\n" +#ifdef HAVE_PWRITEV2 +" -N -- Perform the pwritev2() with RWF_NOWAIT\n" +#endif #endif "\n")); } @@ -273,7 +276,7 @@ pwrite_f( init_cvtnum(&fsblocksize, &fssectsize); bsize = fsblocksize; - while ((c = getopt(argc, argv, "b:BCdf:Fi:qRs:S:uV:wWZ:")) != EOF) { + while ((c = getopt(argc, argv, "b:BCdf:Fi:NqRs:S:uV:wWZ:")) != EOF) { switch (c) { case 'b': tmp = cvtnum(fsblocksize, fssectsize, optarg); @@ -302,6 +305,9 @@ pwrite_f( case 'i': infile = optarg; break; + case 'N': + pwritev2_flags |= RWF_NOWAIT; + break; case 's': skip = cvtnum(fsblocksize, fssectsize, optarg); if (skip < 0) { diff --git a/man/man8/xfs_io.8 b/man/man8/xfs_io.8 index 2c56f092..f410ce9a 100644 --- a/man/man8/xfs_io.8 +++ b/man/man8/xfs_io.8 @@ -248,6 +248,12 @@ Use the vectored IO write syscall with a number of blocksize length iovecs. The number of iovecs is set by the .I vectors parameter. +.TP +.B \-N +Perform the +.BR pwritev2 (2) +call with +.I RWF_NOWAIT. .RE .PD .TP