From patchwork Wed Jun 22 14:13:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Lever X-Patchwork-Id: 12890775 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 698FEC433EF for ; Wed, 22 Jun 2022 14:15:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358088AbiFVOPh (ORCPT ); Wed, 22 Jun 2022 10:15:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358171AbiFVOOE (ORCPT ); Wed, 22 Jun 2022 10:14:04 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87429BBD; Wed, 22 Jun 2022 07:14:02 -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 ams.source.kernel.org (Postfix) with ESMTPS id 40257B81F5B; Wed, 22 Jun 2022 14:14:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 94C21C34114; Wed, 22 Jun 2022 14:13:59 +0000 (UTC) Subject: [PATCH RFC 11/30] 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, tgraf@suug.ch, jlayton@redhat.com Date: Wed, 22 Jun 2022 10:13:58 -0400 Message-ID: <165590723860.75778.13700894228554322207.stgit@manet.1015granger.net> In-Reply-To: <165590626293.75778.9843437418112335153.stgit@manet.1015granger.net> References: <165590626293.75778.9843437418112335153.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 X-Patchwork-State: RFC 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 a2a78163bf8d..0cf2e44e874f 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -832,6 +832,8 @@ 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); @@ -855,6 +857,15 @@ nfsd_file_cache_shutdown(void) nfsd_file_hashtbl = NULL; destroy_workqueue(nfsd_filecache_wq); nfsd_filecache_wq = NULL; + + for_each_possible_cpu(i) { + this_cpu_write(nfsd_file_cache_hits, 0); + this_cpu_write(nfsd_file_acquisitions, 0); + this_cpu_write(nfsd_file_releases, 0); + this_cpu_write(nfsd_file_evictions, 0); + this_cpu_write(nfsd_file_pages_flushed, 0); + this_cpu_write(nfsd_file_cons_fails, 0); + } } static bool