Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763856AbZDBHiN (ORCPT ); Thu, 2 Apr 2009 03:38:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755008AbZDBHh5 (ORCPT ); Thu, 2 Apr 2009 03:37:57 -0400 Received: from gw-ca.panasas.com ([209.116.51.66]:32854 "EHLO laguna.int.panasas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750897AbZDBHh4 (ORCPT ); Thu, 2 Apr 2009 03:37:56 -0400 Message-ID: <49D46A8E.2090002@panasas.com> Date: Thu, 02 Apr 2009 10:34:38 +0300 From: Boaz Harrosh User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090315 Remi/3.0-0.b2.fc10.remi Thunderbird/3.0b2 MIME-Version: 1.0 To: Tejun Heo CC: axboe@kernel.dk, linux-kernel@vger.kernel.org, fujita.tomonori@lab.ntt.co.jp Subject: Re: [PATCH 08/17] bio: reimplement bio_copy_user_iov() References: <1238593472-30360-1-git-send-email-tj@kernel.org> <1238593472-30360-9-git-send-email-tj@kernel.org> <49D38D4B.7020701@panasas.com> <49D41729.4030407@kernel.org> In-Reply-To: <49D41729.4030407@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 02 Apr 2009 07:36:39.0270 (UTC) FILETIME=[C27B5060:01C9B365] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 619 Lines: 22 On 04/02/2009 04:38 AM, Tejun Heo wrote: > Hello, Boaz. > > Boaz Harrosh wrote: >> Please consider that this code-path is used by me, in exofs and >> pNFS-objcets in a very very hot path, where memory pressure is a >> common scenario. > > One quick question. Don't the above paths map kernel pages to a > request? > Well vfs-page-cache pages. Any ideas? > Thanks. > -- 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/