From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755069Ab0FCHGN (ORCPT ); Thu, 3 Jun 2010 03:06:13 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:33712 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754701Ab0FCHGK (ORCPT ); Thu, 3 Jun 2010 03:06:10 -0400 Date: Thu, 3 Jun 2010 03:06:08 -0400 From: Christoph Hellwig To: Arnd Bergmann Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Frederic Weisbecker , John Kacur , Ingo Molnar , Jan Blunck Subject: Re: [RFC 4/5] BKL: use no BKL in llseek Message-ID: <20100603070608.GA12123@infradead.org> References: <1275523999-27462-1-git-send-email-arnd@arndb.de> <1275523999-27462-5-git-send-email-arnd@arndb.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1275523999-27462-5-git-send-email-arnd@arndb.de> User-Agent: Mutt/1.5.19 (2009-01-05) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 03, 2010 at 02:13:18AM +0200, Arnd Bergmann wrote: > We have shown that the BKL in default_llseek and other > llseek operations never protects against concurrent access > from another function: >>From VFS POV no to the default_llseek conversion. As told you and others of the BKL brigade don't change this thing but get rid of it entirely. I was under the impression we had agreed on a road map for that anyway. Please don't forget that overall kernel improvement should at least be a side effect of your big sweap and clean.