From owner-svn-src-all@freebsd.org Wed Jun 22 09:08:19 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D6025A7A08F; Wed, 22 Jun 2016 09:08:19 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 8A335250C; Wed, 22 Jun 2016 09:08:19 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u5M98Iae018908; Wed, 22 Jun 2016 09:08:18 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u5M98IvT018907; Wed, 22 Jun 2016 09:08:18 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201606220908.u5M98IvT018907@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Wed, 22 Jun 2016 09:08:18 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r302078 - stable/10/sys/fs/devfs X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Jun 2016 09:08:19 -0000 Author: kib Date: Wed Jun 22 09:08:18 2016 New Revision: 302078 URL: https://svnweb.freebsd.org/changeset/base/302078 Log: MFC r301928: Only access vp->v_rdev for VCHR vnodes in devfs_reclaim(). Modified: stable/10/sys/fs/devfs/devfs_vnops.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/fs/devfs/devfs_vnops.c ============================================================================== --- stable/10/sys/fs/devfs/devfs_vnops.c Wed Jun 22 09:05:21 2016 (r302077) +++ stable/10/sys/fs/devfs/devfs_vnops.c Wed Jun 22 09:08:18 2016 (r302078) @@ -1325,10 +1325,10 @@ devfs_readlink(struct vop_readlink_args static int devfs_reclaim(struct vop_reclaim_args *ap) { - struct vnode *vp = ap->a_vp; + struct vnode *vp; struct devfs_dirent *de; - struct cdev *dev; + vp = ap->a_vp; mtx_lock(&devfs_de_interlock); de = vp->v_data; if (de != NULL) { @@ -1336,24 +1336,31 @@ devfs_reclaim(struct vop_reclaim_args *a vp->v_data = NULL; } mtx_unlock(&devfs_de_interlock); - vnode_destroy_vobject(vp); + return (0); +} + +static int +devfs_reclaim_vchr(struct vop_reclaim_args *ap) +{ + struct vnode *vp; + struct cdev *dev; + + vp = ap->a_vp; + MPASS(vp->v_type == VCHR); + + devfs_reclaim(ap); VI_LOCK(vp); dev_lock(); dev = vp->v_rdev; vp->v_rdev = NULL; - - if (dev == NULL) { - dev_unlock(); - VI_UNLOCK(vp); - return (0); - } - - dev->si_usecount -= vp->v_usecount; + if (dev != NULL) + dev->si_usecount -= vp->v_usecount; dev_unlock(); VI_UNLOCK(vp); - dev_rel(dev); + if (dev != NULL) + dev_rel(dev); return (0); } @@ -1791,7 +1798,7 @@ static struct vop_vector devfs_specops = .vop_readdir = VOP_PANIC, .vop_readlink = VOP_PANIC, .vop_reallocblks = VOP_PANIC, - .vop_reclaim = devfs_reclaim, + .vop_reclaim = devfs_reclaim_vchr, .vop_remove = devfs_remove, .vop_rename = VOP_PANIC, .vop_revoke = devfs_revoke,