From owner-freebsd-fs@FreeBSD.ORG Fri Apr 25 10:40:40 2008 Return-Path: Delivered-To: fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AF4BB1065673; Fri, 25 Apr 2008 10:40:40 +0000 (UTC) (envelope-from daichi@freebsd.org) Received: from natial.ongs.co.jp (natial.ongs.co.jp [202.216.246.90]) by mx1.freebsd.org (Postfix) with ESMTP id 6F7568FC24; Fri, 25 Apr 2008 10:40:40 +0000 (UTC) (envelope-from daichi@freebsd.org) Received: from parancell.ongs.co.jp (dullmdaler.ongs.co.jp [202.216.246.94]) by natial.ongs.co.jp (Postfix) with ESMTP id 694F6125439; Fri, 25 Apr 2008 19:21:21 +0900 (JST) Message-ID: <4811B0A0.8040702@freebsd.org> Date: Fri, 25 Apr 2008 19:21:20 +0900 From: Daichi GOTO User-Agent: Thunderbird 2.0.0.12 (X11/20080423) MIME-Version: 1.0 To: kib@freebsd.org Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: fs@freebsd.org Subject: Approval request of some additions to src/sys/kern/vfs_subr.c and src/sys/sys/vnode.h X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Apr 2008 10:40:40 -0000 Hi Konstantin :) To fix a unionfs issue of http://www.freebsd.org/cgi/query-pr.cgi?pr=109377, we need to add new functions void vkernrele(struct vnode *vp); void vkernref(struct vnode *vp); and one value int v_kernusecount; /* i ref count of kernel */ to src/sys/sys/vnode.h and rc/sys/kern/vfs_subr.c. Unionfs will be panic when lower fs layer is forced umounted by "umount -f". So to avoid this issue, we've added "v_kernusecount" value that means "a vnode count that kernel are using". vkernrele() and vkernref() are functions that manage "v_kernusecount" value. Please check those and give us an approve or some comments! -- Daichi GOTO, http://people.freebsd.org/~daichi