From owner-freebsd-multimedia@FreeBSD.ORG Fri May 6 16:11:36 2011 Return-Path: Delivered-To: multimedia@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 84D5F1065672; Fri, 6 May 2011 16:11:36 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 5F4A68FC1A; Fri, 6 May 2011 16:11:36 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id EF2E646B3C; Fri, 6 May 2011 12:11:35 -0400 (EDT) Received: from jhbbsd.localnet (unknown [209.249.190.124]) by bigwig.baldwin.cx (Postfix) with ESMTPSA id 89FEC8A01B; Fri, 6 May 2011 12:11:35 -0400 (EDT) From: John Baldwin To: freebsd-current@freebsd.org, multimedia@freebsd.org Date: Fri, 6 May 2011 09:00:08 -0400 User-Agent: KMail/1.13.5 (FreeBSD/8.2-CBSD-20110325; KDE/4.5.5; amd64; ; ) References: <4DC3B764.4030801@FreeBSD.org> In-Reply-To: <4DC3B764.4030801@FreeBSD.org> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201105060900.08672.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.6 (bigwig.baldwin.cx); Fri, 06 May 2011 12:11:35 -0400 (EDT) Cc: Andriy Gapon Subject: Re: dsp mmap change X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 May 2011 16:11:36 -0000 On Friday, May 06, 2011 4:55:00 am Andriy Gapon wrote: > > I would like to ask for a review and/or testing of the following patch: > http://people.freebsd.org/~avg/dev_dsp_mmap.diff > > It's supposed to fix an issue described here: > http://lists.freebsd.org/pipermail/freebsd-multimedia/2011- February/011691.html > > In short, the following pseudo-code should do the right thing: > fd = open(/dev/dsp, O_RDWR); > mmap(PROT_READ, fd); > mmap(PROT_WRITE, fd); Are the buffers statically allocated? -- John Baldwin