From patchwork Wed Jun 22 14:12:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Lever X-Patchwork-Id: 12890752 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 3202ECCA47D for ; Wed, 22 Jun 2022 14:13:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358096AbiFVONL (ORCPT ); Wed, 22 Jun 2022 10:13:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358055AbiFVOM6 (ORCPT ); Wed, 22 Jun 2022 10:12:58 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AD1F321A2; Wed, 22 Jun 2022 07:12:56 -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 4575DB81F57; Wed, 22 Jun 2022 14:12:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B65FC3411B; Wed, 22 Jun 2022 14:12:53 +0000 (UTC) Subject: [PATCH RFC 01/30] NFSD: Report filecache LRU size 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 10:12:52 -0400 Message-ID: <165590717261.75778.17678554642003559686.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 Surface the NFSD filecache's LRU list length to help field troubleshooters monitor filecache issues. Signed-off-by: Chuck Lever --- fs/nfsd/filecache.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index 9cb2d590c036..932db96f854a 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -1089,6 +1089,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) seq_printf(m, "total entries: %u\n", count); seq_printf(m, "longest chain: %u\n", longest); + seq_printf(m, "lru entries: %lu\n", list_lru_count(&nfsd_file_lru)); seq_printf(m, "cache hits: %lu\n", hits); return 0; }