From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qc0-f172.google.com (mail-qc0-f172.google.com [209.85.216.172]) by kanga.kvack.org (Postfix) with ESMTP id CF5F26B0032 for ; Thu, 22 Jan 2015 11:14:50 -0500 (EST) Received: by mail-qc0-f172.google.com with SMTP id i8so1972614qcq.3 for ; Thu, 22 Jan 2015 08:14:50 -0800 (PST) Received: from resqmta-ch2-02v.sys.comcast.net (resqmta-ch2-02v.sys.comcast.net. [2001:558:fe21:29:69:252:207:34]) by mx.google.com with ESMTPS id k95si5027012qgd.72.2015.01.22.08.14.49 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Thu, 22 Jan 2015 08:14:50 -0800 (PST) Date: Thu, 22 Jan 2015 10:14:48 -0600 (CST) From: Christoph Lameter Subject: Re: mmotm: mm-slub-optimize-alloc-free-fastpath-by-removing-preemption-on-off.patch is causing preemptible splats In-Reply-To: <20150121132308.GB23700@dhcp22.suse.cz> Message-ID: References: <20150121132308.GB23700@dhcp22.suse.cz> Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Joonsoo Kim , Jesper Dangaard Brouer , Andrew Morton , linux-mm@kvack.org, LKML > I am not sure how to fix this but it sounds like this_cpu_ptr should > offer the same preempt expectations as other this_cpu_* functions. One returns a pointer that may not be useful if the context is switched and the other completes a operationo on an opject. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org