From owner-svn-src-stable@freebsd.org Tue Sep 26 09:32:30 2017 Return-Path: Delivered-To: svn-src-stable@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 A96BFE04CCE; Tue, 26 Sep 2017 09:32:30 +0000 (UTC) (envelope-from avg@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 74F9182CD6; Tue, 26 Sep 2017 09:32:30 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v8Q9WTSO064665; Tue, 26 Sep 2017 09:32:29 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id v8Q9WTn3064664; Tue, 26 Sep 2017 09:32:29 GMT (envelope-from avg@FreeBSD.org) Message-Id: <201709260932.v8Q9WTn3064664@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Tue, 26 Sep 2017 09:32:29 +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: r324009 - stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-SVN-Group: stable-10 X-SVN-Commit-Author: avg X-SVN-Commit-Paths: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-SVN-Commit-Revision: 324009 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Sep 2017 09:32:30 -0000 Author: avg Date: Tue Sep 26 09:32:29 2017 New Revision: 324009 URL: https://svnweb.freebsd.org/changeset/base/324009 Log: MFC r323480: zfs_get_vfs: reference a requested filesystem instead of vfs_busy-ing it Sponsored by: Panzura Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Tue Sep 26 09:31:17 2017 (r324008) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Tue Sep 26 09:32:29 2017 (r324009) @@ -3040,13 +3040,11 @@ zfs_get_vfs(const char *resource) mtx_lock(&mountlist_mtx); TAILQ_FOREACH(vfsp, &mountlist, mnt_list) { if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) { - if (vfs_busy(vfsp, MBF_MNTLSTLOCK) != 0) - vfsp = NULL; + vfs_ref(vfsp); break; } } - if (vfsp == NULL) - mtx_unlock(&mountlist_mtx); + mtx_unlock(&mountlist_mtx); return (vfsp); } @@ -3533,7 +3531,9 @@ zfs_unmount_snap(const char *snapname) { vfs_t *vfsp; zfsvfs_t *zfsvfs; +#ifdef illumos int err; +#endif if (strchr(snapname, '@') == NULL) return (0); @@ -3545,23 +3545,19 @@ zfs_unmount_snap(const char *snapname) zfsvfs = vfsp->vfs_data; ASSERT(!dsl_pool_config_held(dmu_objset_pool(zfsvfs->z_os))); - err = vn_vfswlock(vfsp->vfs_vnodecovered); #ifdef illumos + err = vn_vfswlock(vfsp->vfs_vnodecovered); VFS_RELE(vfsp); -#else - vfs_unbusy(vfsp); -#endif if (err != 0) return (SET_ERROR(err)); +#endif /* * Always force the unmount for snapshots. */ - #ifdef illumos (void) dounmount(vfsp, MS_FORCE, kcred); #else - vfs_ref(vfsp); (void) dounmount(vfsp, MS_FORCE, curthread); #endif return (0);