Return-Path: Received: from one.firstfloor.org ([213.235.205.2]:51760 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754518Ab0KBSAx (ORCPT ); Tue, 2 Nov 2010 14:00:53 -0400 Date: Tue, 2 Nov 2010 19:00:51 +0100 From: Andi Kleen To: Trond.Myklebust@netapp.com, bjschuma@netapp.com, torvalds@linux-foundation.org, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [regression] NFS readdir change break fully cached nfs root Message-ID: <20101102180051.GA26089@basil.fritz.box> Content-Type: text/plain; charset=us-ascii Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 My NFS root test systems stopped booting with 2.6.37-rc1. It just hangs after entering user space. The NFS root setup uses a slightly fancy parameter setup to minimize network traffic: nfsroot=10.23.204.1:/home/nfsroot/edwin,nocto,acregmin=86400,acregmax=86400,acdirmin=86400,acdirmax=86400 root=/dev/nfs I bisected it down to this commit from Bryan. Unfortunately it's not trivially revertable because that conflicts with later patches. commit d1bacf9eb2fd0e7ef870acf84b9e3b157dcfa7dc Author: Bryan Schumaker Date: Fri Sep 24 14:48:42 2010 -0400 NFS: add readdir cache array -Andi -- ak@linux.intel.com -- Speaking for myself only.