From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966483AbcHBN3H (ORCPT ); Tue, 2 Aug 2016 09:29:07 -0400 Received: from smtprelay0118.hostedemail.com ([216.40.44.118]:38289 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S966658AbcHBN05 (ORCPT ); Tue, 2 Aug 2016 09:26:57 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::::::::::::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1541:1593:1594:1711:1730:1747:1777:1792:2393:2553:2559:2562:2901:3138:3139:3140:3141:3142:3352:3622:3865:3866:3868:3871:3874:5007:6261:6742:7875:9040:10004:10400:10848:10967:11026:11232:11473:11658:11914:12043:12296:12438:12517:12519:12555:12740:13069:13311:13357:13439:14096:14097:14181:14659:14721:21080:21324:30012:30054:30064:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:2,LUA_SUMMARY:none X-HE-Tag: tree20_3c367d9758b0c X-Filterd-Recvd-Size: 2534 Date: Tue, 2 Aug 2016 09:26:52 -0400 From: Steven Rostedt To: Baole Ni Cc: jbaron@akamai.com, jiangshanlai@gmail.com, mathieu.desnoyers@efficios.com, m.chehab@samsung.com, gregkh@linuxfoundation.org, m.szyprowski@samsung.com, kyungmin.park@samsung.com, k.kozlowski@samsung.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, kirill.shutemov@linux.intel.com, oleg@redhat.com, gang.chen.5i5j@gmail.com, mhocko@suse.com, koct9i@gmail.com, aarcange@redhat.com, aryabinin@virtuozzo.com, chuansheng.liu@intel.com Subject: Re: [PATCH 1081/1285] Replace numeric parameter like 0444 with macro Message-ID: <20160802092652.52b7c58f@gandalf.local.home> In-Reply-To: <20160802121443.22191-1-baolex.ni@intel.com> References: <20160802121443.22191-1-baolex.ni@intel.com> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2 Aug 2016 20:14:43 +0800 Baole Ni wrote: > I find that the developers often just specified the numeric value > when calling a macro which is defined with a parameter for access permission. > As we know, these numeric value for access permission have had the corresponding macro, > and that using macro can improve the robustness and readability of the code, > thus, I suggest replacing the numeric parameter with the macro. > NACK! I find 0444 more readable than S_IRUSR | S_IRGRP | S_IROTH. -- Steve > Signed-off-by: Chuansheng Liu > Signed-off-by: Baole Ni > --- > mm/mmap.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/mmap.c b/mm/mmap.c > index de2c176..fad009c 100644 > --- a/mm/mmap.c > +++ b/mm/mmap.c > @@ -67,7 +67,7 @@ int mmap_rnd_compat_bits __read_mostly = CONFIG_ARCH_MMAP_RND_COMPAT_BITS; > #endif > > static bool ignore_rlimit_data; > -core_param(ignore_rlimit_data, ignore_rlimit_data, bool, 0644); > +core_param(ignore_rlimit_data, ignore_rlimit_data, bool, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); > > static void unmap_region(struct mm_struct *mm, > struct vm_area_struct *vma, struct vm_area_struct *prev,