Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 28 Nov 2001 16:13:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 28 Nov 2001 16:13:26 -0500 Received: from vasquez.zip.com.au ([203.12.97.41]:8968 "EHLO vasquez.zip.com.au") by vger.kernel.org with ESMTP id ; Wed, 28 Nov 2001 16:13:16 -0500 Message-ID: <3C05533D.98DCE6D1@zip.com.au> Date: Wed, 28 Nov 2001 13:12:29 -0800 From: Andrew Morton X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.14-pre8 i686) X-Accept-Language: en MIME-Version: 1.0 To: Andreas Dilger CC: "'lkml'" Subject: Re: Unresponiveness of 2.4.16 In-Reply-To: <3C03FE2F.63D7ACFD@zip.com.au> <3C054992.48F5C9E7@zip.com.au>, <3C054992.48F5C9E7@zip.com.au>; from akpm@zip.com.au on Wed, Nov 28, 2001 at 12:31:14PM -0800 <20011128135611.D856@lynx.no> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andreas Dilger wrote: > > On Nov 28, 2001 12:31 -0800, Andrew Morton wrote: > > write-cluster.patch > > ext2 metadata prereading and various other hacks which > > prevent writes from stumbling over reads, and thus ruining > > write clustering. This patch is in the early prototype stage > > Shouldn't the ext2_inode_preread() code use "ll_rw_block(READ_AHEAD,...)" > just to be proper? > Yes, especially now the request queues are shorter than they have historically been. READA also needs to be propagated through the pagecache readhead, which may prove tricky. But so little code is actually using READA at this stage that I didn't bother - I first need to go through those paths and make sure that they are in fact complete, working and useful... - - 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/