From patchwork Tue Jan 31 10:09:25 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Kinsbursky X-Patchwork-Id: 138743 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 5F8051007D1 for ; Tue, 31 Jan 2012 21:09:48 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753838Ab2AaKJq (ORCPT ); Tue, 31 Jan 2012 05:09:46 -0500 Received: from mailhub.sw.ru ([195.214.232.25]:21302 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753990Ab2AaKJm (ORCPT ); Tue, 31 Jan 2012 05:09:42 -0500 Received: from localhost6.localdomain6 ([10.30.20.35]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id q0VA9PKq010524; Tue, 31 Jan 2012 14:09:26 +0400 (MSK) Subject: [PATCH v2 4/4] SUNRPC: service shutdown function in network namespace context introduced To: Trond.Myklebust@netapp.com From: Stanislav Kinsbursky Cc: linux-nfs@vger.kernel.org, xemul@parallels.com, neilb@suse.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, jbottomley@parallels.com, bfields@fieldses.org, davem@davemloft.net, devel@openvz.org Date: Tue, 31 Jan 2012 14:09:25 +0400 Message-ID: <20120131100925.4342.34740.stgit@localhost6.localdomain6> In-Reply-To: <20120131100625.4342.34539.stgit@localhost6.localdomain6> References: <20120131100625.4342.34539.stgit@localhost6.localdomain6> User-Agent: StGit/0.15 MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This function is enough for releasing resources, allocated for network namespace context, in case of sharing service between them. IOW, each service "user" (LockD, NFSd, etc), which wants to share service between network namespaces, have to release related resources by the function, introduced in this patch, instead of performing service shutdown (of course in case the service is shared already to the moment of release). Signed-off-by: Stanislav Kinsbursky --- net/sunrpc/svc.c | 33 ++++++++++++++++++++------------- 1 files changed, 20 insertions(+), 13 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index 6cc0ea3..78abac4 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -510,6 +510,24 @@ svc_create_pooled(struct svc_program *prog, unsigned int bufsize, } EXPORT_SYMBOL_GPL(svc_create_pooled); +void svc_shutdown_net(struct svc_serv *serv, struct net *net) +{ + /* + * The set of xprts (contained in the sv_tempsocks and + * sv_permsocks lists) is now constant, since it is modified + * only by accepting new sockets (done by service threads in + * svc_recv) or aging old ones (done by sv_temptimer), or + * configuration changes (excluded by whatever locking the + * caller is using--nfsd_mutex in the case of nfsd). So it's + * safe to traverse those lists and shut everything down: + */ + svc_close_net(serv, net); + + if (serv->sv_shutdown) + serv->sv_shutdown(serv, net); +} +EXPORT_SYMBOL_GPL(svc_shutdown_net); + /* * Destroy an RPC service. Should be called with appropriate locking to * protect the sv_nrthreads, sv_permsocks and sv_tempsocks. @@ -532,16 +550,8 @@ svc_destroy(struct svc_serv *serv) printk("svc_destroy: no threads for serv=%p!\n", serv); del_timer_sync(&serv->sv_temptimer); - /* - * The set of xprts (contained in the sv_tempsocks and - * sv_permsocks lists) is now constant, since it is modified - * only by accepting new sockets (done by service threads in - * svc_recv) or aging old ones (done by sv_temptimer), or - * configuration changes (excluded by whatever locking the - * caller is using--nfsd_mutex in the case of nfsd). So it's - * safe to traverse those lists and shut everything down: - */ - svc_close_net(serv, net); + + svc_shutdown_net(serv, net); /* * The last user is gone and thus all sockets have to be destroyed to @@ -550,9 +560,6 @@ svc_destroy(struct svc_serv *serv) BUG_ON(!list_empty(&serv->sv_permsocks)); BUG_ON(!list_empty(&serv->sv_tempsocks)); - if (serv->sv_shutdown) - serv->sv_shutdown(serv, net); - cache_clean_deferred(serv); if (svc_serv_is_pooled(serv))