From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936014AbYEURFa (ORCPT ); Wed, 21 May 2008 13:05:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S935863AbYEURFF (ORCPT ); Wed, 21 May 2008 13:05:05 -0400 Received: from gateway-1237.mvista.com ([63.81.120.158]:15179 "EHLO gateway-1237.mvista.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935789AbYEURFE (ORCPT ); Wed, 21 May 2008 13:05:04 -0400 Subject: Re: [PATCH] Introduce down_nowait() From: Daniel Walker To: Rusty Russell Cc: Andrew Morton , Linus Torvalds , linux-kernel@vger.kernel.org, Stephen Rothwell , Christoph Hellwig , Matthew Wilcox In-Reply-To: <200805211756.04731.rusty@rustcorp.com.au> References: <200805211600.16415.rusty@rustcorp.com.au> <20080520232903.6756b1c1.akpm@linux-foundation.org> <200805211756.04731.rusty@rustcorp.com.au> Content-Type: text/plain Date: Wed, 21 May 2008 10:04:58 -0700 Message-Id: <1211389499.18130.53.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 (2.12.3-3.fc8) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2008-05-21 at 17:56 +1000, Rusty Russell wrote: > Subject: [PATCH] Introduce down_try() > > I planned on removing the much-disliked down_trylock() (with its > backwards return codes) in 2.6.27, but it's creating something of a > logjam with other patches in -mm and linux-next. > > Andrew suggested introducing "down_try" as a wrapper now, to make > the transition easier. I must be missing something critical, but what's the logjam this is causing? Daniel