From owner-freebsd-hackers@FreeBSD.ORG Sun May 1 08:46:47 2005 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B1E4316A4CE for ; Sun, 1 May 2005 08:46:47 +0000 (GMT) Received: from wproxy.gmail.com (wproxy.gmail.com [64.233.184.194]) by mx1.FreeBSD.org (Postfix) with ESMTP id 626CA43D31 for ; Sun, 1 May 2005 08:46:47 +0000 (GMT) (envelope-from guomingyan@gmail.com) Received: by wproxy.gmail.com with SMTP id 69so1238264wri for ; Sun, 01 May 2005 01:46:46 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=kc7p0NHkvj751maXwPckId5NVouj0jRkwMGON18RW3Gnn/w9AcNH9/QfUawjfmV4i10pA+fff1Bjy9W5w/wIRTbCvQvWQhcAfEZLR3EepJqGFp5aL9iMQAqLxGlo1ldPNGSrCfDBJ4Nqlm8BA8BtHNzJ2idGvcWwjvvWBlSwOJo= Received: by 10.54.3.42 with SMTP id 42mr57502wrc; Sun, 01 May 2005 01:46:46 -0700 (PDT) Received: by 10.54.34.46 with HTTP; Sun, 1 May 2005 01:46:46 -0700 (PDT) Message-ID: <1fa17f8105050101464489a09@mail.gmail.com> Date: Sun, 1 May 2005 16:46:46 +0800 From: prime To: freebsd-hackers@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Subject: A question about /sys/kern/link_elf.c X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: prime List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 May 2005 08:46:47 -0000 There is a "#ifdef SPARSE_MAPPING" at line 701,and again a "#ifdef SPARSE_MAPPING" at line 713.I just can't understand the second one.Does it have any special mean ? thanks .