From patchwork Fri Apr 10 00:09:42 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Grover X-Patchwork-Id: 25815 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 [209.132.176.167]) by ozlabs.org (Postfix) with ESMTP id E9D70DE1FA for ; Fri, 10 Apr 2009 10:10:59 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937566AbZDJAKZ (ORCPT ); Thu, 9 Apr 2009 20:10:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S937545AbZDJAKS (ORCPT ); Thu, 9 Apr 2009 20:10:18 -0400 Received: from rcsinet13.oracle.com ([148.87.113.125]:23061 "EHLO rgminet13.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S937461AbZDJAKI (ORCPT ); Thu, 9 Apr 2009 20:10:08 -0400 Received: from acsinet13.oracle.com (acsinet13.oracle.com [141.146.126.235]) by rgminet13.oracle.com (Switch-3.3.1/Switch-3.3.1) with ESMTP id n3A0A9pV008916 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 10 Apr 2009 00:10:10 GMT Received: from acsmt702.oracle.com (acsmt702.oracle.com [141.146.40.80]) by acsinet13.oracle.com (Switch-3.3.1/Switch-3.3.1) with ESMTP id n3A0AT2q022959; Fri, 10 Apr 2009 00:10:30 GMT Received: from localhost.localdomain (/139.185.48.5) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 09 Apr 2009 17:10:01 -0700 From: Andy Grover To: netdev@vger.kernel.org Cc: rds-devel@oss.oracle.com Subject: [PATCH 07/12] RDS: use get_user_pages_fast() Date: Thu, 9 Apr 2009 17:09:42 -0700 Message-Id: <1239322187-3764-8-git-send-email-andy.grover@oracle.com> X-Mailer: git-send-email 1.5.6.3 In-Reply-To: <1239322187-3764-1-git-send-email-andy.grover@oracle.com> References: <1239322187-3764-1-git-send-email-andy.grover@oracle.com> X-Source-IP: acsmt702.oracle.com [141.146.40.80] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090201.49DE8E5B.00F9:SCFMA4539814,ss=1,fgs=0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use the new function that is simpler and faster. Signed-off-by: Andy Grover --- net/rds/info.c | 5 +---- net/rds/rdma.c | 5 +---- 2 files changed, 2 insertions(+), 8 deletions(-) diff --git a/net/rds/info.c b/net/rds/info.c index 1d88553..62aeef3 100644 --- a/net/rds/info.c +++ b/net/rds/info.c @@ -188,10 +188,7 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval, ret = -ENOMEM; goto out; } - down_read(¤t->mm->mmap_sem); - ret = get_user_pages(current, current->mm, start, nr_pages, 1, 0, - pages, NULL); - up_read(¤t->mm->mmap_sem); + ret = get_user_pages_fast(start, nr_pages, 1, pages); if (ret != nr_pages) { if (ret > 0) nr_pages = ret; diff --git a/net/rds/rdma.c b/net/rds/rdma.c index e390dc7..8dc83d2 100644 --- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -150,10 +150,7 @@ static int rds_pin_pages(unsigned long user_addr, unsigned int nr_pages, { int ret; - down_read(¤t->mm->mmap_sem); - ret = get_user_pages(current, current->mm, user_addr, - nr_pages, write, 0, pages, NULL); - up_read(¤t->mm->mmap_sem); + ret = get_user_pages_fast(user_addr, nr_pages, write, pages); if (ret >= 0 && ret < nr_pages) { while (ret--)