From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f51.google.com (mail-pa0-f51.google.com [209.85.220.51]) by kanga.kvack.org (Postfix) with ESMTP id 8BB756B02BC for ; Sun, 20 Oct 2013 14:05:24 -0400 (EDT) Received: by mail-pa0-f51.google.com with SMTP id ld10so3824106pab.10 for ; Sun, 20 Oct 2013 11:05:24 -0700 (PDT) Received: from psmtp.com ([74.125.245.126]) by mx.google.com with SMTP id if1si7110698pad.291.2013.10.20.11.05.22 for ; Sun, 20 Oct 2013 11:05:23 -0700 (PDT) Date: Sun, 20 Oct 2013 18:05:21 +0000 From: Christoph Lameter Subject: Re: [PATCH v2 13/15] slab: use struct page for slab management In-Reply-To: Message-ID: <00000141d70af320-21d92853-2cfb-4292-af09-dd57d406ab8b-000000@email.amazonses.com> References: <1381913052-23875-1-git-send-email-iamjoonsoo.kim@lge.com> <1381913052-23875-14-git-send-email-iamjoonsoo.kim@lge.com> <00000141c7d66282-aa92b1f2-2a69-424b-9498-8e5367304d32-000000@email.amazonses.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: JoonSoo Kim Cc: Joonsoo Kim , Pekka Enberg , Andrew Morton , David Rientjes , Linux Memory Management List , LKML , Wanpeng Li On Sat, 19 Oct 2013, JoonSoo Kim wrote: > I search the history of struct page and find that the SLUB use mapping field > in past (2007 year). At that time, you inserted VM_BUG_ON(PageSlab(page)) > ('b5fab14') into page_mapping() function to find remaining use. Recently, > I never hear that this is triggered and 6 years have passed since inserting > VM_BUG_ON(), so I guess there is no problem to use it. > If this argument is reasonable, please give me an ACK :) > > Thanks. Acked-by: Christoph Lameter -- 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