From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f46.google.com (mail-pa0-f46.google.com [209.85.220.46]) by kanga.kvack.org (Postfix) with ESMTP id 33F7C6B0032 for ; Thu, 4 Dec 2014 01:52:53 -0500 (EST) Received: by mail-pa0-f46.google.com with SMTP id lj1so17433661pab.33 for ; Wed, 03 Dec 2014 22:52:52 -0800 (PST) Received: from lgemrelse7q.lge.com (LGEMRELSE7Q.lge.com. [156.147.1.151]) by mx.google.com with ESMTP id af2si41715679pbc.24.2014.12.03.22.52.50 for ; Wed, 03 Dec 2014 22:52:51 -0800 (PST) Date: Thu, 4 Dec 2014 15:56:22 +0900 From: Joonsoo Kim Subject: Re: [PATCH v3 6/8] mm/page_owner: keep track of page owners Message-ID: <20141204065622.GB12141@js1304-P5Q-DELUXE> References: <1416816926-7756-1-git-send-email-iamjoonsoo.kim@lge.com> <1416816926-7756-7-git-send-email-iamjoonsoo.kim@lge.com> <547F0EF8.5030402@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <547F0EF8.5030402@codeaurora.org> Sender: owner-linux-mm@kvack.org List-ID: To: Chintan Pandya Cc: Andrew Morton , Mel Gorman , Johannes Weiner , Minchan Kim , Dave Hansen , Michal Nazarewicz , Jungsoo Son , Ingo Molnar , linux-mm@kvack.org, linux-kernel@vger.kernel.org On Wed, Dec 03, 2014 at 06:54:08PM +0530, Chintan Pandya wrote: > Hi Kim, Hello, Chintan. > > This is really useful stuff that you are doing. And the runtime > allocation for storing page owner stack is a good call. > > Along with that, we also use extended version of the original > page_owner patch. The extension is, to store stack trace at the time > of freeing the page. That will indeed eat up space like anything > (just double of original page_owner) but it helps in debugging some > crucial issues. Like, illegitimate free, finding leaked pages (if we Sound really interesting. I hope to see it. > store their time stamps) etc. The same has been useful in finding > double-free cases in drivers. But we have never got a chance to > upstream that. Now that these patches are being discussed again, do > you think it would be good idea to integrate in the same league of > patches ? Good to hear. I think that you can upstream it separately. If you send the patch, I will review it and help to merge it. Thanks. -- 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