From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750921AbVHHPYU (ORCPT ); Mon, 8 Aug 2005 11:24:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750936AbVHHPYU (ORCPT ); Mon, 8 Aug 2005 11:24:20 -0400 Received: from gold.veritas.com ([143.127.12.110]:62655 "EHLO gold.veritas.com") by vger.kernel.org with ESMTP id S1750921AbVHHPYU (ORCPT ); Mon, 8 Aug 2005 11:24:20 -0400 Date: Mon, 8 Aug 2005 16:26:11 +0100 (BST) From: Hugh Dickins X-X-Sender: hugh@goblin.wat.veritas.com To: Dipankar Sarma cc: Andrew Morton , Manfred Spraul , linux-kernel@vger.kernel.org Subject: Re: Fw: two 2.6.13-rc3-mm3 oddities In-Reply-To: <20050808140536.GC4558@in.ibm.com> Message-ID: References: <20050803095644.78b58cb4.akpm@osdl.org> <20050808140536.GC4558@in.ibm.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-OriginalArrivalTime: 08 Aug 2005 15:24:19.0725 (UTC) FILETIME=[3F2C33D0:01C59C2D] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 8 Aug 2005, Dipankar Sarma wrote: > On Wed, Aug 03, 2005 at 09:56:44AM +1000, Andrew Morton forwarded from Hugh: > > > > Subject: two 2.6.13-rc3-mm3 oddities > > > > One time my tmpfs-and-looped-tmpfs-kernel-builds collapsed with lots of > > VFS: file-max limit 49778 reached > > messages, which I imagine was a side-effect of the struct file RCU > > patches you've dropped from -rc4-mm1, perhaps a grace period problem. > > Hugh, could you please try this with the experimental patch below ? I'll give it a go. But first I ought to try to reproduce the problem more easily - it happened after about two hours of a test which had run for two or more hours (before hitting the apparently unrelated problem) at least twice each on at least two machines. So until I can reproduce the problem more easily, it'll take some while to have confidence that your patch addresses it. Therefore worth a little effort at my end to cut it down (and if I can't cut it down, I may have to solve the odder locked page issue to get the original test to run long enough to hit the file-max problem with any likelihood). > Hugh, can you mail me the exact test you run ? I would like to run > it myself and see if I can reproduce it. It'll waste less of both our time if I at least try to reproduce it more quickly first. Hold on... Hugh