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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 90320C433FE for ; Fri, 20 May 2022 18:37:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352905AbiETSh4 (ORCPT ); Fri, 20 May 2022 14:37:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352967AbiETShu (ORCPT ); Fri, 20 May 2022 14:37:50 -0400 Received: from mx0a-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D15FA195BF5 for ; Fri, 20 May 2022 11:37:48 -0700 (PDT) Received: from pps.filterd (m0001303.ppops.net [127.0.0.1]) by m0001303.ppops.net (8.17.1.5/8.17.1.5) with ESMTP id 24KHSdkU008600 for ; Fri, 20 May 2022 11:37:48 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=xpR2o1MxE5h1TGY+8JuoVPirJk4Gk5FbraTEzaT2FUw=; b=B+D0y/UOBtUJH2ThPdBKyBqjNoqp7Rs5HNASL+1AjHHDZ/k9j2dF4CH5z+0pQsMCunNp Ovaq6ag0+uprirMFmdaRjr+whE7wyzHYLOfiCOoBsWiqRPE9HHKmDXUh1Ggz2Ak5/eUE bVfkc5UczODbgZLKw4PoDCYBOpAEV0LkTj0= Received: from mail.thefacebook.com ([163.114.132.120]) by m0001303.ppops.net (PPS) with ESMTPS id 3g5wkre7q1-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 20 May 2022 11:37:47 -0700 Received: from twshared8307.18.frc3.facebook.com (2620:10d:c085:108::8) by mail.thefacebook.com (2620:10d:c085:11d::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Fri, 20 May 2022 11:37:46 -0700 Received: by devvm225.atn0.facebook.com (Postfix, from userid 425415) id B6C7BF5E5B3F; Fri, 20 May 2022 11:37:16 -0700 (PDT) From: Stefan Roesch To: , , , , CC: , , , Subject: [RFC PATCH v4 15/17] xfs: Add iomap async buffered write support Date: Fri, 20 May 2022 11:36:44 -0700 Message-ID: <20220520183646.2002023-16-shr@fb.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220520183646.2002023-1-shr@fb.com> References: <20220520183646.2002023-1-shr@fb.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-GUID: QmQQP-JUbU2X0m5BN8wQcUCibnFx1bUZ X-Proofpoint-ORIG-GUID: QmQQP-JUbU2X0m5BN8wQcUCibnFx1bUZ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-20_06,2022-05-20_02,2022-02-23_01 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org This adds the async buffered write support to the iomap layer of XFS. If a lock cannot be acquired or additional reads need to be performed, the request will return -EAGAIN in case this is an async buffered write request. This patch changes the helper function xfs_ilock_for_iomap such that the lock mode needs to be passed in. Signed-off-by: Stefan Roesch --- fs/xfs/xfs_iomap.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index e552ce541ec2..1aea962262ad 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -659,7 +659,7 @@ xfs_ilock_for_iomap( unsigned flags, unsigned *lockmode) { - unsigned mode =3D XFS_ILOCK_SHARED; + unsigned int mode =3D *lockmode; bool is_write =3D flags & (IOMAP_WRITE | IOMAP_ZERO); =20 /* @@ -737,7 +737,7 @@ xfs_direct_write_iomap_begin( int nimaps =3D 1, error =3D 0; bool shared =3D false; u16 iomap_flags =3D 0; - unsigned lockmode; + unsigned int lockmode =3D XFS_ILOCK_SHARED; =20 ASSERT(flags & (IOMAP_WRITE | IOMAP_ZERO)); =20 @@ -881,18 +881,22 @@ xfs_buffered_write_iomap_begin( bool eof =3D false, cow_eof =3D false, shared =3D false; int allocfork =3D XFS_DATA_FORK; int error =3D 0; + unsigned int lockmode =3D XFS_ILOCK_EXCL; =20 if (xfs_is_shutdown(mp)) return -EIO; =20 /* we can't use delayed allocations when using extent size hints */ - if (xfs_get_extsz_hint(ip)) + if (xfs_get_extsz_hint(ip)) { return xfs_direct_write_iomap_begin(inode, offset, count, flags, iomap, srcmap); + } =20 ASSERT(!XFS_IS_REALTIME_INODE(ip)); =20 - xfs_ilock(ip, XFS_ILOCK_EXCL); + error =3D xfs_ilock_for_iomap(ip, flags, &lockmode); + if (error) + return error; =20 if (XFS_IS_CORRUPT(mp, !xfs_ifork_has_extents(&ip->i_df)) || XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BMAPIFORMAT)) { @@ -1167,7 +1171,7 @@ xfs_read_iomap_begin( xfs_fileoff_t end_fsb =3D xfs_iomap_end_fsb(mp, offset, length); int nimaps =3D 1, error =3D 0; bool shared =3D false; - unsigned lockmode; + unsigned int lockmode =3D XFS_ILOCK_SHARED; =20 ASSERT(!(flags & (IOMAP_WRITE | IOMAP_ZERO))); =20 --=20 2.30.2