From owner-svn-src-all@FreeBSD.ORG Sun Dec 8 00:59:05 2013 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 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 71F066B6; Sun, 8 Dec 2013 00:59:05 +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)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 5E5C115B9; Sun, 8 Dec 2013 00:59:05 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id rB80x5YF008669; Sun, 8 Dec 2013 00:59:05 GMT (envelope-from rmacklem@svn.freebsd.org) Received: (from rmacklem@localhost) by svn.freebsd.org (8.14.7/8.14.7/Submit) id rB80x50a008668; Sun, 8 Dec 2013 00:59:05 GMT (envelope-from rmacklem@svn.freebsd.org) Message-Id: <201312080059.rB80x50a008668@svn.freebsd.org> From: Rick Macklem Date: Sun, 8 Dec 2013 00:59:05 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r259089 - head/sbin/mount_nfs X-SVN-Group: head 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: 2.1.17 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, 08 Dec 2013 00:59:05 -0000 Author: rmacklem Date: Sun Dec 8 00:59:04 2013 New Revision: 259089 URL: http://svnweb.freebsd.org/changeset/base/259089 Log: Document the noncontigwr NFS mount option. This is a content change. MFC after: 3 weeks Modified: head/sbin/mount_nfs/mount_nfs.8 Modified: head/sbin/mount_nfs/mount_nfs.8 ============================================================================== --- head/sbin/mount_nfs/mount_nfs.8 Sun Dec 8 00:08:03 2013 (r259088) +++ head/sbin/mount_nfs/mount_nfs.8 Sun Dec 8 00:59:04 2013 (r259089) @@ -28,7 +28,7 @@ .\" @(#)mount_nfs.8 8.3 (Berkeley) 3/29/95 .\" $FreeBSD$ .\" -.Dd July 8, 2013 +.Dd December 7, 2013 .Dt MOUNT_NFS 8 .Os .Sh NAME @@ -257,6 +257,19 @@ servers on the client. Note that this option will only be honored when performing the initial mount, it will be silently ignored if used while updating the mount options. +.It Cm noncontigwr +This mount option allows the NFS client to +combine non-contiguous byte ranges being written +such that the dirty byte range becomes a superset of the bytes +that are dirty. +This reduces the number of writes significantly for software +builds. +The merging of byte ranges isn't done if the file has been file +locked, since most applications modifying a file from multiple +clients will use file locking. +As such, this option could result in a corrupted file for the +rare case of an application modifying the file from multiple +clients concurrently without using file locking. .It Cm principal For the RPCSEC_GSS security flavors, such as krb5, krb5i and krb5p, this option sets the name of the host based principal name expected