Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932925AbZDBUcP (ORCPT ); Thu, 2 Apr 2009 16:32:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757831AbZDBUb4 (ORCPT ); Thu, 2 Apr 2009 16:31:56 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:50485 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751268AbZDBUb4 (ORCPT ); Thu, 2 Apr 2009 16:31:56 -0400 Date: Thu, 2 Apr 2009 16:31:53 -0400 From: Christoph Hellwig To: Dave Hansen Cc: Nick Piggin , Linux Kernel Mailing List , linux-fsdevel@vger.kernel.org, Andrew Morton Subject: Re: [patch 1/2] fs: mnt_want_write speedup Message-ID: <20090402203152.GA16600@infradead.org> References: <20090310143718.GB15977@wotan.suse.de> <1236809477.30142.83.camel@nimitz> <20090312041334.GB1893@wotan.suse.de> <1237403623.8286.196.camel@nimitz> <20090402182210.GB17175@wotan.suse.de> <1238697440.8846.46.camel@nimitz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1238697440.8846.46.camel@nimitz> User-Agent: Mutt/1.5.18 (2008-05-17) 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 Content-Length: 667 Lines: 17 On Thu, Apr 02, 2009 at 11:37:20AM -0700, Dave Hansen wrote: > > > Page faults themselves? Which path was that from? > > > > Yes. file_update_time. > > We should be able to use your mnt_clone_write() optimization separate > from the mnt_want_write() speedup here, right? Does file_update_time even need a separate mnt_want_write? It should always be after a mnt_want_write which we need for the actual data write. -- 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/