From owner-freebsd-hackers@FreeBSD.ORG Sat Jun 4 16:44:53 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org 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 BAAB016A41C for ; Sat, 4 Jun 2005 16:44:53 +0000 (GMT) (envelope-from imp@bsdimp.com) Received: from harmony.village.org (berlin-qwest.village.org [168.103.84.175]) by mx1.FreeBSD.org (Postfix) with ESMTP id C1BAC43D1F for ; Sat, 4 Jun 2005 16:44:52 +0000 (GMT) (envelope-from imp@bsdimp.com) Received: from localhost (warner@rover2.village.org [10.0.0.1]) by harmony.village.org (8.13.3/8.13.1) with ESMTP id j54Gg8L7052663; Sat, 4 Jun 2005 10:42:08 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Sat, 04 Jun 2005 10:42:54 -0600 (MDT) Message-Id: <20050604.104254.56970090.imp@bsdimp.com> To: baozhaolinuxer@yahoo.com From: "M. Warner Losh" In-Reply-To: <20050603091519.31175.qmail@web31707.mail.mud.yahoo.com> References: <20050603091519.31175.qmail@web31707.mail.mud.yahoo.com> X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-hackers@freebsd.org Subject: Re: How FREEBSD deals with request for continuous physical pages X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 Jun 2005 16:44:53 -0000 In message: <20050603091519.31175.qmail@web31707.mail.mud.yahoo.com> Bao Zhao writes: : Linux use buddy allocator.but I find it seems that : FREEBSD uses single page linked list. but SLAB and : some drivers need continuous physical pages, so I : wonder how FREEBSD solved this problem. contigmalloc() Warner