From: Eric Sandeen Subject: Re: [PATCH 1/2] ext2: speed up file creates by optimizing rec_len functions Date: Tue, 07 Dec 2010 15:36:32 -0600 Message-ID: <4CFEA8E0.9030501@redhat.com> References: <4CFE7347.8030807@redhat.com> <4CFE7409.9090609@redhat.com> <20101207130708.71c894e9.akpm@linux-foundation.org> <4CFEA5AF.2000702@redhat.com> <20101207133308.eb2144da.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: ext4 development , Jan Kara To: Andrew Morton Return-path: Received: from mx1.redhat.com ([209.132.183.28]:53206 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752288Ab0LGVgj (ORCPT ); Tue, 7 Dec 2010 16:36:39 -0500 In-Reply-To: <20101207133308.eb2144da.akpm@linux-foundation.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: On 12/7/10 3:33 PM, Andrew Morton wrote: > I bet other tweaks in there would yield similar goodliness. Yep, probably so ... We could also speed up ext3/4 a bit by not doing the extN_check_dir_entry call on every single access, but only when we read it from disk. Given that I've talked about it for 4 years and never done it, maybe I'll try to find a volunteer ;) -Eric