From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f176.google.com (mail-pd0-f176.google.com [209.85.192.176]) by kanga.kvack.org (Postfix) with ESMTP id 0631A6B0035 for ; Thu, 12 Dec 2013 20:56:08 -0500 (EST) Received: by mail-pd0-f176.google.com with SMTP id w10so1547315pde.7 for ; Thu, 12 Dec 2013 17:56:08 -0800 (PST) Received: from LGEAMRELO02.lge.com (lgeamrelo02.lge.com. [156.147.1.126]) by mx.google.com with ESMTP id gn4si234252pbc.286.2013.12.12.17.56.06 for ; Thu, 12 Dec 2013 17:56:07 -0800 (PST) Date: Fri, 13 Dec 2013 10:59:09 +0900 From: Joonsoo Kim Subject: Re: possible regression on 3.13 when calling flush_dcache_page Message-ID: <20131213015909.GA8845@lge.com> References: <20131212143149.GI12099@ldesroches-Latitude-E6320> <20131212143618.GJ12099@ldesroches-Latitude-E6320> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131212143618.GJ12099@ldesroches-Latitude-E6320> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org On Thu, Dec 12, 2013 at 03:36:19PM +0100, Ludovic Desroches wrote: > fix mmc mailing list address error > > On Thu, Dec 12, 2013 at 03:31:50PM +0100, Ludovic Desroches wrote: > > Hi, > > > > With v3.13-rc3 I have an error when the atmel-mci driver calls > > flush_dcache_page (log at the end of the message). > > > > Since I didn't have it before, I did a git bisect and the commit introducing > > the error is the following one: > > > > 106a74e slab: replace free and inuse in struct slab with newly introduced active > > > > I don't know if this commit has introduced a bug or if it has revealed a bug > > in the atmel-mci driver. Hello, I think that this commit may not introduce a bug. This patch remove one variable on slab management structure and replace variable name. So there is no functional change. I doubt that side-effect of this patch reveals a bug in other place. Side-effect is reduced memory usage for slab management structure. It would makes some slabs have more objects with more density since slab management structure is sometimes on the page for objects. So if it diminishes, more objects can be in the page. Anyway, I will look at it more. If you have any progress, please let me know. 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