From patchwork Wed May 17 23:38:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dai Ngo X-Patchwork-Id: 13245994 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 4BBC3C7EE22 for ; Wed, 17 May 2023 23:39:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229724AbjEQXjZ (ORCPT ); Wed, 17 May 2023 19:39:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59088 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229512AbjEQXjW (ORCPT ); Wed, 17 May 2023 19:39:22 -0400 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE00146BF; Wed, 17 May 2023 16:39:19 -0700 (PDT) Received: from pps.filterd (m0246617.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 34HIGupC021073; Wed, 17 May 2023 23:39:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id; s=corp-2023-03-30; bh=Tpp1J48e4AmmjSYL6utEn8Ps6uSUBOgkJhYinUpqL+o=; b=hpnClH0xwmSWKA82dHJLe8kl7Dr/8Z+1N37jaah+4xKOEGeJRz4GUorFdeWDcZZNS87K jyedg8+R+jJMmmntYF1OxkhEiMxZZEBEKeFFX6N2taE8btny4mAF4spGVTBKOuHdhJqR o4SBUXfI4oWJg9mj22uO0NBw5Kq4wfaOshTdaN3ChSuEu+kyKzCdbUuI5TqMjumDHq+k 3MDUHmXtK6mlm4Q9VuDz4N5u3PJJKmCmlzy/8slekiCIlJhIwwWJub20Tddl0tFsknWG bFE8WsN8dU1fW1kjR5kkt255V3RWmigqAW5Bps/gD/kBBU+KieUZ2uc3stsNrvRTLd4f sA== Received: from iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta01.appoci.oracle.com [130.35.100.223]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3qj33uxr5q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 17 May 2023 23:39:12 +0000 Received: from pps.filterd (iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 34HMFhGx032130; Wed, 17 May 2023 23:39:11 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3qj10c3ukd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 17 May 2023 23:39:11 +0000 Received: from iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 34HNdABh015880; Wed, 17 May 2023 23:39:10 GMT Received: from ca-common-hq.us.oracle.com (ca-common-hq.us.oracle.com [10.211.9.209]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3qj10c3u5n-1; Wed, 17 May 2023 23:39:10 +0000 From: Dai Ngo To: chuck.lever@oracle.com, jlayton@kernel.org Cc: linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v3 0/2] NFSD: add support for NFSv4 write delegation Date: Wed, 17 May 2023 16:38:08 -0700 Message-Id: <1684366690-28029-1-git-send-email-dai.ngo@oracle.com> X-Mailer: git-send-email 1.8.3.1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-17_04,2023-05-17_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=630 adultscore=0 malwarescore=0 mlxscore=0 spamscore=0 bulkscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305170194 X-Proofpoint-GUID: tHcDuRihIJGVvsBPRiCF7nkcSQSPyEK0 X-Proofpoint-ORIG-GUID: tHcDuRihIJGVvsBPRiCF7nkcSQSPyEK0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org NFSD: add support for NFSv4 write delegation The NFSv4 server currently supports read delegation using VFS lease which is implemented using file_lock. This patch series add write delegation support for NFSv4 server by: . remove the check for F_WRLCK in generic_add_lease to allow file_lock to be used for write delegation. . grant write delegation for OPEN with NFS4_SHARE_ACCESS_WRITE if there is no conflict with other OPENs. Write delegation conflict with another OPEN, REMOVE, RENAME and SETATTR are handled the same as read delegation using notify_change, try_break_deleg. Changes since v1: [PATCH 3/4] NFSD: add supports for CB_GETATTR callback - remove WARN_ON_ONCE from encode_bitmap4 - replace decode_bitmap4 with xdr_stream_decode_uint32_array - replace xdr_inline_decode and xdr_decode_hyper in decode_cb_getattr with xdr_stream_decode_u64. Also remove the un-needed likely(). - modify signature of encode_cb_getattr4args to take pointer to nfs4_cb_fattr - replace decode_attr_length with xdr_stream_decode_u32 - rename decode_cb_getattr to decode_cb_fattr4 - fold the initialization of cb_cinfo and cb_fsize into decode_cb_fattr4 - rename ncf_cb_cinfo to ncf_cb_change to avoid confusion of cindo usage in fs/nfsd/nfs4xdr.c - correct NFS4_dec_cb_getattr_sz and update size description [PATCH 4/4] NFSD: handle GETATTR conflict with write delegation - change nfs4_handle_wrdeleg_conflict returns __be32 to fix test robot - change ncf_cb_cinfo to ncf_cb_change to avoid confusion of cindo usage in fs/nfsd/nfs4xdr.c Changes since v2: [PATCH 2/4] NFSD: enable support for write delegation - rename 'deleg' to 'dl_type' in nfs4_set_delegation - remove 'wdeleg' in nfs4_open_delegation - drop [PATCH 3/4] NFSD: add supports for CB_GETATTR callback and [PATCH 4/4] NFSD: handle GETATTR conflict with write delegation for futher clarification of the benefits of using CB_GETATTR for handling GETATTR from the 2nd client Reviewed-by: Jeff Layton