From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04C3F7E0FF; Mon, 8 Apr 2024 13:49:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712584189; cv=none; b=jWpnDbqgZLwhrpicEU6gQ0XFR7xE3Y8heHIs0VYdsQIZXSiufGpn25zb/gpTHXcrNZ60FXX6QK0TTRoRXI3SGymtmnyt2XA41eJ7CAHSHvjY8t41G4DdM1Rh8tUZM8kOmHRLNQIZ9NPG8Sbv9nzzykie+z03zfxYDkAiQBNJIVw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712584189; c=relaxed/simple; bh=PTiQizZ0fl0LwQX1waSo7p0sT89PFNhbEVuc6UnZC4I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lcR8/zDDSsFJO0VvlPtsh6+rxQgOXgjMADuMWTgP2YjHAYRE3wrRz9xvUiAyyMBRcG9bfX4H5ZhinVAl+GV5bAWfy7UynDhuuLhHBuWQyqyBR38O++7IO25s4Pv8WvksreEVQuJFphWylisMWfd7BsOQxZDa/AjrJS6Oj4FP+EI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=F1WnyzXP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="F1WnyzXP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 83327C433F1; Mon, 8 Apr 2024 13:49:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1712584188; bh=PTiQizZ0fl0LwQX1waSo7p0sT89PFNhbEVuc6UnZC4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F1WnyzXPY+rD49FvnimJtaQ86fo62COzXg2GUiOktGziS+ZXprHls480me1+4VAFQ ZhqWHVqY3qMlmrZWiHWmhUmJ0/zqD1aA4DDB5aaY+IFgPpX7VHMjbmBr7kudf60smJ C2Skavn32ktsoC7V6i7T25uUTnFc5+HHDOKCMNHI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jeff Layton , Chuck Lever Subject: [PATCH 5.15 354/690] NFSD: Record number of flush calls Date: Mon, 8 Apr 2024 14:53:40 +0200 Message-ID: <20240408125412.424212462@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240408125359.506372836@linuxfoundation.org> References: <20240408125359.506372836@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chuck Lever [ Upstream commit df2aff524faceaf743b7c5ab0f4fb86cb511f782 ] Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever --- fs/nfsd/filecache.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index e5bd9f06492c8..b9941d4ef20d6 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -45,6 +45,7 @@ static DEFINE_PER_CPU(unsigned long, nfsd_file_cache_hits); static DEFINE_PER_CPU(unsigned long, nfsd_file_acquisitions); static DEFINE_PER_CPU(unsigned long, nfsd_file_releases); static DEFINE_PER_CPU(unsigned long, nfsd_file_total_age); +static DEFINE_PER_CPU(unsigned long, nfsd_file_pages_flushed); static DEFINE_PER_CPU(unsigned long, nfsd_file_evictions); struct nfsd_fcache_disposal { @@ -242,7 +243,12 @@ nfsd_file_check_write_error(struct nfsd_file *nf) static void nfsd_file_flush(struct nfsd_file *nf) { - if (nf->nf_file && vfs_fsync(nf->nf_file, 1) != 0) + struct file *file = nf->nf_file; + + if (!file || !(file->f_mode & FMODE_WRITE)) + return; + this_cpu_add(nfsd_file_pages_flushed, file->f_mapping->nrpages); + if (vfs_fsync(file, 1) != 0) nfsd_reset_write_verifier(net_generic(nf->nf_net, nfsd_net_id)); } @@ -1069,7 +1075,8 @@ nfsd_file_create(struct svc_rqst *rqstp, struct svc_fh *fhp, */ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) { - unsigned long hits = 0, acquisitions = 0, releases = 0, evictions = 0; + unsigned long releases = 0, pages_flushed = 0, evictions = 0; + unsigned long hits = 0, acquisitions = 0; unsigned int i, count = 0, longest = 0; unsigned long lru = 0, total_age = 0; @@ -1094,6 +1101,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) releases += per_cpu(nfsd_file_releases, i); total_age += per_cpu(nfsd_file_total_age, i); evictions += per_cpu(nfsd_file_evictions, i); + pages_flushed += per_cpu(nfsd_file_pages_flushed, i); } seq_printf(m, "total entries: %u\n", count); @@ -1107,6 +1115,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) seq_printf(m, "mean age (ms): %ld\n", total_age / releases); else seq_printf(m, "mean age (ms): -\n"); + seq_printf(m, "pages flushed: %lu\n", pages_flushed); return 0; } -- 2.43.0