From owner-svn-src-all@FreeBSD.ORG Sun Nov 2 19:09:35 2014 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 98366618; Sun, 2 Nov 2014 19:09:35 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::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 833AB83C; Sun, 2 Nov 2014 19:09:35 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id sA2J9ZUZ078008; Sun, 2 Nov 2014 19:09:35 GMT (envelope-from delphij@FreeBSD.org) Received: (from delphij@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id sA2J9ZdK078007; Sun, 2 Nov 2014 19:09:35 GMT (envelope-from delphij@FreeBSD.org) Message-Id: <201411021909.sA2J9ZdK078007@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: delphij set sender to delphij@FreeBSD.org using -f From: Xin LI Date: Sun, 2 Nov 2014 19:09:35 +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: r273983 - stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs 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: 2.1.18-1 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: Sun, 02 Nov 2014 19:09:35 -0000 Author: delphij Date: Sun Nov 2 19:09:34 2014 New Revision: 273983 URL: https://svnweb.freebsd.org/changeset/base/273983 Log: MFC r273267: Add tunable vfs.zfs.space_map_blksz for space map's maximum block size. Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Sun Nov 2 17:31:45 2014 (r273982) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Sun Nov 2 19:09:34 2014 (r273983) @@ -37,6 +37,8 @@ #include #include +SYSCTL_DECL(_vfs_zfs); + /* * The data for a given space map can be kept on blocks of any size. * Larger blocks entail fewer i/o operations, but they also cause the @@ -44,6 +46,8 @@ * when only a few blocks have changed since the last transaction group. */ int space_map_blksz = (1 << 12); +SYSCTL_INT(_vfs_zfs, OID_AUTO, space_map_blksz, CTLFLAG_RDTUN, &space_map_blksz, 0, + "Maximum block size for space map. Must be power of 2 and greater than 4096."); /* * Load the space map disk into the specified range tree. Segments of maptype