From patchwork Wed May 31 02:35:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dai Ngo X-Patchwork-Id: 13261370 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 5926AC7EE23 for ; Wed, 31 May 2023 02:35:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233828AbjEaCfd (ORCPT ); Tue, 30 May 2023 22:35:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231842AbjEaCf0 (ORCPT ); Tue, 30 May 2023 22:35:26 -0400 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 74A80123; Tue, 30 May 2023 19:35:25 -0700 (PDT) Received: from pps.filterd (m0246631.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 34UNOgXq015320; Wed, 31 May 2023 02:35:22 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2023-03-30; bh=J/dLiyzOlqOVO3IWRV52xWq8Kl3J1LMJAHb4zxE2SxI=; b=b/udPmEb8Mr4B1l3J5Ar4A01XFauaIdAmBvsnqz5oarMcPuw2nIe6bAuGzZzpOstsZJ/ 98LVX2bEak0hRh75i1YgCVFf9302dkQht6vdIJK5sb6zV6HOLEmXa8FjdOp8cs6qt+Gr E25U1awf0ffGH8mOJCd+ur+9beL9KkEEbmpKRcCmCU3nWOF8FGNa7ZLF3zj+y7rRZMEk gZGQcmBJl5W58Sr0kriTXqcSPPqHOvTK1eMDiBp3eG7qSB9X/JthS6d+uUNjdgmYeaJp VSclxYOZIE45pbOh8oBQe/3s4rgPvIvVq6KGvLQmod3GUXviUWpy/hGm36cqa2wJSUss OQ== Received: from iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta02.appoci.oracle.com [147.154.18.20]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3qvhj4vfr3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 31 May 2023 02:35:22 +0000 Received: from pps.filterd (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 34V07Cc8000380; Wed, 31 May 2023 02:35:21 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3qu8q99hu4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 31 May 2023 02:35:21 +0000 Received: from iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 34V2TtqZ012906; Wed, 31 May 2023 02:35:21 GMT Received: from ca-common-hq.us.oracle.com (ca-common-hq.us.oracle.com [10.211.9.209]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3qu8q99hsx-3; Wed, 31 May 2023 02:35:21 +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 2/2] NFSD: add counter for write delegation recall due to conflict with GETATTR Date: Tue, 30 May 2023 19:35:07 -0700 Message-Id: <1685500507-23598-3-git-send-email-dai.ngo@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1685500507-23598-1-git-send-email-dai.ngo@oracle.com> References: <1685500507-23598-1-git-send-email-dai.ngo@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-05-30_18,2023-05-30_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 mlxscore=0 mlxlogscore=999 suspectscore=0 malwarescore=0 adultscore=0 phishscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305310019 X-Proofpoint-GUID: xMXQOQwd2makauZuOtD8QRpHd-A_1eBz X-Proofpoint-ORIG-GUID: xMXQOQwd2makauZuOtD8QRpHd-A_1eBz Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add counter to keep track of how many times write delegations are recalled due to conflict with GETATTR. Signed-off-by: Dai Ngo Reviewed-by: Jeff Layton --- fs/nfsd/nfs4state.c | 1 + fs/nfsd/stats.c | 2 ++ fs/nfsd/stats.h | 7 +++++++ 3 files changed, 10 insertions(+) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 29ed2e72b665..cba27dfa39e8 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -8402,6 +8402,7 @@ nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct inode *inode) } break_lease: spin_unlock(&ctx->flc_lock); + nfsd_stats_wdeleg_getattr_inc(); status = nfserrno(nfsd_open_break_lease(inode, NFSD_MAY_READ)); if (status != nfserr_jukebox || !nfsd_wait_for_delegreturn(rqstp, inode)) diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c index 777e24e5da33..63797635e1c3 100644 --- a/fs/nfsd/stats.c +++ b/fs/nfsd/stats.c @@ -65,6 +65,8 @@ static int nfsd_show(struct seq_file *seq, void *v) seq_printf(seq, " %lld", percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_NFS4_OP(i)])); } + seq_printf(seq, "\nwdeleg_getattr %lld", + percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_WDELEG_GETATTR])); seq_putc(seq, '\n'); #endif diff --git a/fs/nfsd/stats.h b/fs/nfsd/stats.h index 9b43dc3d9991..cf5524e7ca06 100644 --- a/fs/nfsd/stats.h +++ b/fs/nfsd/stats.h @@ -22,6 +22,7 @@ enum { NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */ NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP, #define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op)) + NFSD_STATS_WDELEG_GETATTR, /* count of getattr conflict with wdeleg */ #endif NFSD_STATS_COUNTERS_NUM }; @@ -93,4 +94,10 @@ static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount) percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount); } +#ifdef CONFIG_NFSD_V4 +static inline void nfsd_stats_wdeleg_getattr_inc(void) +{ + percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_WDELEG_GETATTR]); +} +#endif #endif /* _NFSD_STATS_H */