From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753896AbcC3NcY (ORCPT ); Wed, 30 Mar 2016 09:32:24 -0400 Received: from casper.infradead.org ([85.118.1.10]:47651 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752204AbcC3NcV (ORCPT ); Wed, 30 Mar 2016 09:32:21 -0400 Date: Wed, 30 Mar 2016 15:32:17 +0200 From: Peter Zijlstra To: Michal Hocko Cc: LKML , Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , "David S. Miller" , Tony Luck , Andrew Morton , Chris Zankel , Max Filippov , x86@kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, linux-arch@vger.kernel.org Subject: Re: [PATCH 0/11] introduce down_write_killable for rw_semaphore Message-ID: <20160330133217.GV3408@twins.programming.kicks-ass.net> References: <1456750705-7141-1-git-send-email-mhocko@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1456750705-7141-1-git-send-email-mhocko@kernel.org> 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 Mon, Feb 29, 2016 at 01:58:14PM +0100, Michal Hocko wrote: > I have tested on x86 with OOM situations with high mmap_sem contention > (basically many parallel page faults racing with many parallel mmap/munmap > tight loops) so the waiters for the write locks are routinely interrupted > by SIGKILL. Aside from the one niggle (as per the other email) they look good to me and I would take them through the tip/locking tree. Thanks!