Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752056AbaJAVsg (ORCPT ); Wed, 1 Oct 2014 17:48:36 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:44852 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751424AbaJAVsf (ORCPT ); Wed, 1 Oct 2014 17:48:35 -0400 Date: Wed, 1 Oct 2014 14:48:34 -0700 From: Andrew Morton To: Sasha Levin Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, hughd@google.com, mgorman@suse.de Subject: Re: [PATCH 0/5] mm: poison critical mm/ structs Message-Id: <20141001144834.ff3ff0349951df734d159fb3@linux-foundation.org> In-Reply-To: <542C749B.1040103@oracle.com> References: <1412041639-23617-1-git-send-email-sasha.levin@oracle.com> <20141001140725.fd7f1d0cf933fbc2aa9fc1b1@linux-foundation.org> <542C749B.1040103@oracle.com> X-Mailer: Sylpheed 3.2.0beta5 (GTK+ 2.24.10; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 01 Oct 2014 17:39:39 -0400 Sasha Levin wrote: > > It looks fairly cheap - I wonder if it should simply fall under > > CONFIG_DEBUG_VM rather than the new CONFIG_DEBUG_VM_POISON. > > Config options are cheap as well :) Thing is, lots of people are enabling CONFIG_DEBUG_VM, but a smaller number of people will enable CONFIG_DEBUG_VM_POISON. Less coverage. Defaulting to y if CONFIG_DEBUG_VM might help, but if people do `make oldconfig' when CONFIG_DEBUG_VM=n, their CONFIG_DEBUG_VM_POISON will get set to `n' and will remain that way when they set CONFIG_DEBUG_VM again. -- 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/