From patchwork Mon Jan 28 19:41:20 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 2058131 Return-Path: X-Original-To: patchwork-linux-nfs@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 4601D3FD56 for ; Mon, 28 Jan 2013 19:48:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753109Ab3A1Tsi (ORCPT ); Mon, 28 Jan 2013 14:48:38 -0500 Received: from mail-gh0-f172.google.com ([209.85.160.172]:62886 "EHLO mail-gh0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753045Ab3A1Tsg (ORCPT ); Mon, 28 Jan 2013 14:48:36 -0500 Received: by mail-gh0-f172.google.com with SMTP id z22so477373ghb.31 for ; Mon, 28 Jan 2013 11:48:35 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:sender:from:to:cc:subject:date:message-id:x-mailer :in-reply-to:references:x-gm-message-state; bh=3zxbMWYUi6SZWN1QD70Z0TiJcZslmFO8CB6NwPj6AzA=; b=RC5MIq2oJvNY7iBKy/+GmSUQ3mu339MrYkFO6dDTWQvWHWwprVPn6h+kMnDvveVGIk QAuZxAAHKBhGXYLB5tX0BVWEttOvivOGzW/FNtIyCScn9KveyV17Tf7gKuoSPIHK1PYh CmDXmhSTVRx9snZvk5HuGKznnbYguS2KFfyo2EjV//cfaxRunpNoC7uwepSKb0OXJZm1 TToXfLInmSev2/D2uSrTcwE1jGt7poUlYmmQdl72GDB6Vph4UfCt3Fr3Xl89EzEePM2x CNOGwKb2mnkb7mwljHbckPa8bI3VjQ7TXNFALJlgp4NLHfFZrUo1sUKt2qHsCS6mlG/W BPpA== X-Received: by 10.100.239.3 with SMTP id m3mr4601702anh.22.1359402128894; Mon, 28 Jan 2013 11:42:08 -0800 (PST) Received: from salusa.poochiereds.net (cpe-107-015-113-143.nc.res.rr.com. [107.15.113.143]) by mx.google.com with ESMTPS id i24sm9712873ann.16.2013.01.28.11.42.06 (version=TLSv1 cipher=RC4-SHA bits=128/128); Mon, 28 Jan 2013 11:42:07 -0800 (PST) From: Jeff Layton To: bfields@fieldses.org Cc: linux-nfs@vger.kernel.org Subject: [PATCH v1 14/16] nfsd: track the number of DRC entries in the cache Date: Mon, 28 Jan 2013 14:41:20 -0500 Message-Id: <1359402082-29195-15-git-send-email-jlayton@redhat.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1359402082-29195-1-git-send-email-jlayton@redhat.com> References: <1359402082-29195-1-git-send-email-jlayton@redhat.com> X-Gm-Message-State: ALoCoQnZy4Uo+ikaj/K0kaww8zCuf0toDpH0v+OrNwNnTSPS2k7/8CLJVXliGzuFfyJ5VKfPIN3p Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Signed-off-by: Jeff Layton --- fs/nfsd/nfscache.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index 896e1c0..bd21230 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -21,6 +21,7 @@ static struct hlist_head * cache_hash; static struct list_head lru_head; static struct kmem_cache *drc_slab; +static unsigned int num_drc_entries; /* * Calculate the hash index from an XID. @@ -65,6 +66,7 @@ nfsd_reply_cache_free_locked(struct svc_cacherep *rp) kfree(rp->c_replvec.iov_base); hlist_del(&rp->c_hash); list_del(&rp->c_lru); + --num_drc_entries; kmem_cache_free(drc_slab, rp); } @@ -88,6 +90,7 @@ int nfsd_reply_cache_init(void) goto out_nomem; INIT_LIST_HEAD(&lru_head); + num_drc_entries = 0; return 0; out_nomem: printk(KERN_ERR "nfsd: failed to allocate reply cache\n"); @@ -257,6 +260,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) return RC_DOIT; } spin_lock(&cache_lock); + ++num_drc_entries; /* * Must search again just in case someone inserted one