From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752386AbcEKRql (ORCPT ); Wed, 11 May 2016 13:46:41 -0400 Received: from merlin.infradead.org ([205.233.59.134]:60120 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751651AbcEKRqk (ORCPT ); Wed, 11 May 2016 13:46:40 -0400 Date: Wed, 11 May 2016 19:46:30 +0200 From: Peter Zijlstra To: Tetsuo Handa Cc: tglx@linutronix.de, mingo@kernel.org, akpm@linux-foundation.org, mgorman@techsingularity.net, mhocko@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: x86_64 Question: Are concurrent IPI requests safe? Message-ID: <20160511174630.GI3192@twins.programming.kicks-ass.net> References: <201605112219.HEB64012.FLQOFMJOVOtFHS@I-love.SAKURA.ne.jp> <20160511133928.GF3192@twins.programming.kicks-ass.net> <201605112309.AGJ18252.tOFMFQOJFLSOVH@I-love.SAKURA.ne.jp> <201605120019.CGI60411.OJSLHFQFtVMOOF@I-love.SAKURA.ne.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201605120019.CGI60411.OJSLHFQFtVMOOF@I-love.SAKURA.ne.jp> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 12, 2016 at 12:19:07AM +0900, Tetsuo Handa wrote: > Well, I came to feel that this is caused by down_write_killable() bug. > I guess we should fix down_write_killable() bug first. There's a patch you can try in that thread... lkml.kernel.org/r/20160511094128.GB3190@twins.programming.kicks-ass.net