From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f47.google.com (mail-pa0-f47.google.com [209.85.220.47]) by kanga.kvack.org (Postfix) with ESMTP id 138786B0038 for ; Wed, 1 Oct 2014 17:48:37 -0400 (EDT) Received: by mail-pa0-f47.google.com with SMTP id rd3so990618pab.6 for ; Wed, 01 Oct 2014 14:48:36 -0700 (PDT) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id gm1si2108744pbd.6.2014.10.01.14.48.35 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Oct 2014 14:48:35 -0700 (PDT) Date: Wed, 1 Oct 2014 14:48:34 -0700 From: Andrew Morton 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> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Sasha Levin Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, hughd@google.com, mgorman@suse.de 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, 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