From owner-cvs-all Wed Dec 13 10:53:42 2000 From owner-cvs-all@FreeBSD.ORG Wed Dec 13 10:53:38 2000 Return-Path: Delivered-To: cvs-all@freebsd.org Received: from pike.osd.bsdi.com (pike.osd.bsdi.com [204.216.28.222]) by hub.freebsd.org (Postfix) with ESMTP id D23FB37B400; Wed, 13 Dec 2000 10:53:37 -0800 (PST) Received: from foo.osd.bsdi.com (root@foo.osd.bsdi.com [204.216.28.137]) by pike.osd.bsdi.com (8.11.1/8.9.3) with ESMTP id eBDIrUE34203; Wed, 13 Dec 2000 10:53:30 -0800 (PST) (envelope-from jhb@foo.osd.bsdi.com) Received: (from jhb@localhost) by foo.osd.bsdi.com (8.11.1/8.11.0) id eBDIqit29573; Wed, 13 Dec 2000 10:52:44 -0800 (PST) (envelope-from jhb) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <200012130513.eBD5D4s83055@freefall.freebsd.org> Date: Wed, 13 Dec 2000 10:52:44 -0800 (PST) Organization: BSD, Inc. From: John Baldwin To: Bosko Milekic Subject: RE: cvs commit: src/sys/sys mbuf.h Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org Sender: jhb@foo.osd.bsdi.com Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 13-Dec-00 Bosko Milekic wrote: > bmilekic 2000/12/12 21:13:03 PST > > Modified files: > sys/sys mbuf.h > Log: > Eliminate a race in MEXTFREE(). The reference counter decrement and test > was not atomic. We now make sure that we free the ext buf if the reference > count is about to reach 0 but also make sure that nobody else has done it > before us. > > While I'm here, change refcnt to u_int (from long). This fixes a compiler > warning regarding use of atomic_cmpset_long on i386. If you are using atomic_cmpset_long, then use u_long for the refcount instead of u_int please. Eitehr that, or use atomic_cmpset_int. -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.Baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message