Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933742AbZDJCes (ORCPT ); Thu, 9 Apr 2009 22:34:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932906AbZDJCeM (ORCPT ); Thu, 9 Apr 2009 22:34:12 -0400 Received: from fg-out-1718.google.com ([72.14.220.153]:45875 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932905AbZDJCeK (ORCPT ); Thu, 9 Apr 2009 22:34:10 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:mime-version:content-type :content-disposition:user-agent; b=CiuXTJyiSluDbc1BQaDBXEWNN9cJasfA98GVLE9e3cn56v1N50r8q1gfNxAgSb8oXS EwWHbxCZvAS0SBHz2W+yPX1jsi6VmBD0R2ql2tBvAud5EIqBHDzlObJO7e/XGDronLII y4ubxnf27DI8agmUAiJpdDzrQqKKa6SZkM7NM= Date: Fri, 10 Apr 2009 06:34:13 +0400 From: Alexey Dobriyan To: akpm@linux-foundation.org, containers@lists.linux-foundation.org Cc: xemul@parallels.com, serue@us.ibm.com, dave@linux.vnet.ibm.com, mingo@elte.hu, orenl@cs.columbia.edu, hch@infradead.org, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH 05/30] nsproxy: add create_nsproxy() Message-ID: <20090410023413.GF27788@x200.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1548 Lines: 54 clone_nsproxy() does useless copying of old nsproxy -- every pointer will be rewritten to new ns or to old ns. Remove copying, rename clone_nsproxy(), it will be used by C/R code to create fresh nsproxy on restart. Signed-off-by: Alexey Dobriyan --- kernel/nsproxy.c | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) --- a/kernel/nsproxy.c +++ b/kernel/nsproxy.c @@ -26,19 +26,14 @@ static struct kmem_cache *nsproxy_cachep; struct nsproxy init_nsproxy = INIT_NSPROXY(init_nsproxy); -/* - * creates a copy of "orig" with refcount 1. - */ -static inline struct nsproxy *clone_nsproxy(struct nsproxy *orig) +static inline struct nsproxy *create_nsproxy(void) { - struct nsproxy *ns; + struct nsproxy *nsproxy; - ns = kmem_cache_alloc(nsproxy_cachep, GFP_KERNEL); - if (ns) { - memcpy(ns, orig, sizeof(struct nsproxy)); - atomic_set(&ns->count, 1); - } - return ns; + nsproxy = kmem_cache_alloc(nsproxy_cachep, GFP_KERNEL); + if (nsproxy) + atomic_set(&nsproxy->count, 1); + return nsproxy; } /* @@ -52,7 +47,7 @@ static struct nsproxy *create_new_namespaces(unsigned long flags, struct nsproxy *new_nsp; int err; - new_nsp = clone_nsproxy(tsk->nsproxy); + new_nsp = create_nsproxy(); if (!new_nsp) return ERR_PTR(-ENOMEM); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/