From patchwork Tue Jun 28 18:06:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Lever III X-Patchwork-Id: 12898642 X-Patchwork-Delegate: kuba@kernel.org 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 CC302CCA479 for ; Tue, 28 Jun 2022 18:07:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233958AbiF1SHC (ORCPT ); Tue, 28 Jun 2022 14:07:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233952AbiF1SHA (ORCPT ); Tue, 28 Jun 2022 14:07:00 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC8E31DA79; Tue, 28 Jun 2022 11:06:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8BAA961ADD; Tue, 28 Jun 2022 18:06:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A0A70C3411D; Tue, 28 Jun 2022 18:06:58 +0000 (UTC) Subject: [PATCH v2 11/31] NFSD: Zero counters when the filecache is re-initialized From: Chuck Lever To: linux-nfs@vger.kernel.org, netdev@vger.kernel.org Cc: david@fromorbit.com, jlayton@redhat.com, tgraf@suug.ch Date: Tue, 28 Jun 2022 14:06:57 -0400 Message-ID: <165643961771.84360.11939022369957909175.stgit@manet.1015granger.net> In-Reply-To: <165643915086.84360.2809940286726976517.stgit@manet.1015granger.net> References: <165643915086.84360.2809940286726976517.stgit@manet.1015granger.net> User-Agent: StGit/1.5.dev2+g9ce680a5 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org If nfsd_file_cache_init() is called after a shutdown, be sure the stat counters are reset. Signed-off-by: Chuck Lever --- fs/nfsd/filecache.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index 7b532449b93f..3055a04eeabe 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -830,6 +830,8 @@ nfsd_file_cache_shutdown_net(struct net *net) void nfsd_file_cache_shutdown(void) { + int i; + set_bit(NFSD_FILE_SHUTDOWN, &nfsd_file_lru_flags); lease_unregister_notifier(&nfsd_file_lease_notifier); @@ -853,6 +855,15 @@ nfsd_file_cache_shutdown(void) nfsd_file_hashtbl = NULL; destroy_workqueue(nfsd_filecache_wq); nfsd_filecache_wq = NULL; + + for_each_possible_cpu(i) { + per_cpu(nfsd_file_cache_hits, i) = 0; + per_cpu(nfsd_file_acquisitions, i) = 0; + per_cpu(nfsd_file_releases, i) = 0; + per_cpu(nfsd_file_total_age, i) = 0; + per_cpu(nfsd_file_pages_flushed, i) = 0; + per_cpu(nfsd_file_evictions, i) = 0; + } } static bool