From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932422AbWGLSYR (ORCPT ); Wed, 12 Jul 2006 14:24:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932328AbWGLSYM (ORCPT ); Wed, 12 Jul 2006 14:24:12 -0400 Received: from e36.co.us.ibm.com ([32.97.110.154]:46493 "EHLO e36.co.us.ibm.com") by vger.kernel.org with ESMTP id S932330AbWGLSRU (ORCPT ); Wed, 12 Jul 2006 14:17:20 -0400 Subject: [RFC][PATCH 08/27] increment sb writer count when nlink hits zero To: viro@ftp.linux.org.uk Cc: serue@us.ibm.com, linux-kernel@vger.kernel.org, Dave Hansen From: Dave Hansen Date: Wed, 12 Jul 2006 11:17:15 -0700 References: <20060712181709.5C1A4353@localhost.localdomain> In-Reply-To: <20060712181709.5C1A4353@localhost.localdomain> Message-Id: <20060712181715.624EC138@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org When a file is unlinked, there will soon be a write to the filesystem. Note this, and disallow remounts to r/o during the time when this write is pending. Signed-off-by: Dave Hansen --- lxc-dave/fs/libfs.c | 1 + 1 files changed, 1 insertion(+) diff -puN fs/libfs.c~C-inc-sb-writer-count-on-dec-nlink-to-zero fs/libfs.c --- lxc/fs/libfs.c~C-inc-sb-writer-count-on-dec-nlink-to-zero 2006-07-12 11:09:23.000000000 -0700 +++ lxc-dave/fs/libfs.c 2006-07-12 11:09:25.000000000 -0700 @@ -276,6 +276,7 @@ void inode_drop_nlink(struct inode *inod if (inode->i_nlink) return; inode->i_state |= I_WRITING_ON_SB; + atomic_inc(&inode->i_sb->s_mnt_writers); } int simple_unlink(struct inode *dir, struct dentry *dentry) _