From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757305Ab2EDCY7 (ORCPT ); Thu, 3 May 2012 22:24:59 -0400 Received: from LGEMRELSE6Q.lge.com ([156.147.1.121]:63572 "EHLO LGEMRELSE6Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755884Ab2EDCY6 (ORCPT ); Thu, 3 May 2012 22:24:58 -0400 X-AuditID: 9c930179-b7c19ae000000486-f8-4fa33df8a801 Message-ID: <4FA33DF6.8060107@kernel.org> Date: Fri, 04 May 2012 11:24:54 +0900 From: Minchan Kim User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120410 Thunderbird/11.0.1 MIME-Version: 1.0 Newsgroups: gmane.linux.kernel,gmane.linux.kernel.mm To: Seth Jennings CC: Nitin Gupta , Greg Kroah-Hartman , Dan Magenheimer , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Konrad Rzeszutek Wilk Subject: Re: [PATCH 3/4] zsmalloc use zs_handle instead of void * References: <1336027242-372-1-git-send-email-minchan@kernel.org> <1336027242-372-3-git-send-email-minchan@kernel.org> <4FA28907.9020300@vflare.org> <4FA2A2F0.3030509@linux.vnet.ibm.com> In-Reply-To: <4FA2A2F0.3030509@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/04/2012 12:23 AM, Seth Jennings wrote: > On 05/03/2012 08:32 AM, Nitin Gupta wrote: > >> On 5/3/12 2:40 AM, Minchan Kim wrote: >>> We should use zs_handle instead of void * to avoid any >>> confusion. Without this, users may just treat zs_malloc return value as >>> a pointer and try to deference it. >>> >>> Cc: Dan Magenheimer >>> Cc: Konrad Rzeszutek Wilk >>> Signed-off-by: Minchan Kim >>> --- >>> drivers/staging/zcache/zcache-main.c | 8 ++++---- >>> drivers/staging/zram/zram_drv.c | 8 ++++---- >>> drivers/staging/zram/zram_drv.h | 2 +- >>> drivers/staging/zsmalloc/zsmalloc-main.c | 28 >>> ++++++++++++++-------------- >>> drivers/staging/zsmalloc/zsmalloc.h | 15 +++++++++++---- >>> 5 files changed, 34 insertions(+), 27 deletions(-) >> >> This was a long pending change. Thanks! > > > The reason I hadn't done it before is that it introduces a checkpatch > warning: > > WARNING: do not add new typedefs > #303: FILE: drivers/staging/zsmalloc/zsmalloc.h:19: > +typedef void * zs_handle; > Yes. I did it but I think we are (a) of chapter 5: Typedefs in Documentation/CodingStyle. (a) totally opaque objects (where the typedef is actively used to _hide_ what the object is). No? > In addition this particular patch has a checkpatch error: > > ERROR: "foo * bar" should be "foo *bar" > #303: FILE: drivers/staging/zsmalloc/zsmalloc.h:19: > +typedef void * zs_handle; It was my mistake. Will fix. Thanks! -- Kind regards, Minchan Kim