Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752007AbaFDRRe (ORCPT ); Wed, 4 Jun 2014 13:17:34 -0400 Received: from qmta01.emeryville.ca.mail.comcast.net ([76.96.30.16]:40890 "EHLO qmta01.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751063AbaFDRRd (ORCPT ); Wed, 4 Jun 2014 13:17:33 -0400 Date: Wed, 4 Jun 2014 12:17:31 -0500 (CDT) From: Christoph Lameter To: Tejun Heo cc: Sebastian Ott , Anatol Pomozov , Benjamin LaHaise , linux-aio@kvack.org, Kent Overstreet , Gu Zheng , Heiko Carstens , LKML Subject: Re: [PATCH] percpu-refcount: fix usage of this_cpu_ops (was Re: hanging aio process) In-Reply-To: <20140604164106.GI5004@htj.dyndns.org> Message-ID: References: <20140519180851.GD2915@kvack.org> <20140604164106.GI5004@htj.dyndns.org> Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 4 Jun 2014, Tejun Heo wrote: > Urgh... I really don't like the subtleties around __this_cpu_*(). > It's too easy to get it wrong and fail to notice it. :( Thats why we added the preemption check logic recently. Wonder why it did not trigger in this case. -- 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/