Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932528AbWCBUkc (ORCPT ); Thu, 2 Mar 2006 15:40:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932540AbWCBUkb (ORCPT ); Thu, 2 Mar 2006 15:40:31 -0500 Received: from mail.tv-sign.ru ([213.234.233.51]:29657 "EHLO several.ru") by vger.kernel.org with ESMTP id S932500AbWCBUka (ORCPT ); Thu, 2 Mar 2006 15:40:30 -0500 Message-ID: <4407577F.951E50BC@tv-sign.ru> Date: Thu, 02 Mar 2006 23:37:19 +0300 From: Oleg Nesterov X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.2.20 i686) X-Accept-Language: en MIME-Version: 1.0 To: "Eric W. Biederman" , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [PATCH 01/23] tref: Implement task references. References: <44074479.15D306EB@tv-sign.ru> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 582 Lines: 18 Oleg Nesterov wrote: > > void put_pid_ref(struct pid_ref *ref) > { > if (!ref || !atomic_dec_and_test(&ref->count)) > return; > > write_lock_irq(&tasklist_lock); > if (!atomic_read(&ref->count)) { Ok, this is racy, but the fix is possible. Oleg. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/