From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH 08/17] fs: icache protect inode state Date: Fri, 1 Oct 2010 02:02:27 -0400 Message-ID: <20101001060227.GF32349@infradead.org> References: <1285762729-17928-1-git-send-email-david@fromorbit.com> <1285762729-17928-9-git-send-email-david@fromorbit.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org To: Dave Chinner Return-path: Content-Disposition: inline In-Reply-To: <1285762729-17928-9-git-send-email-david@fromorbit.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Wed, Sep 29, 2010 at 10:18:40PM +1000, Dave Chinner wrote: > From: Nick Piggin > > Before removing the inode_lock, we need to protect the inode list > operations with the inode->i_lock. This ensures that all inode state > changes are serialised regardless of the fact that the lists they > are moving around might be protected by different locks. Hence we > can safely protect an inode in transit from one list to another > without needing to hold all the list locks at the same time. The subject does not seem to match the patch description and content.