From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f178.google.com (mail-wi0-f178.google.com [209.85.212.178]) by kanga.kvack.org (Postfix) with ESMTP id D4FA76B025F for ; Thu, 23 Jul 2015 10:02:25 -0400 (EDT) Received: by wibxm9 with SMTP id xm9so209987160wib.0 for ; Thu, 23 Jul 2015 07:02:25 -0700 (PDT) Received: from mail-wi0-x231.google.com (mail-wi0-x231.google.com. [2a00:1450:400c:c05::231]) by mx.google.com with ESMTPS id bl7si6925896wjc.28.2015.07.23.07.02.23 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 Jul 2015 07:02:24 -0700 (PDT) Received: by wibud3 with SMTP id ud3so220664788wib.0 for ; Thu, 23 Jul 2015 07:02:23 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20150723134714.GA29224@quack.suse.cz> References: <1437650286-117629-1-git-send-email-valentinrothberg@gmail.com> <20150723134714.GA29224@quack.suse.cz> From: Valentin Rothberg Date: Thu, 23 Jul 2015 16:01:53 +0200 Message-ID: Subject: Re: [PATCH] mm/Kconfig: NEED_BOUNCE_POOL: clean-up condition Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Jan Kara Cc: akpm@linux-foundation.org, minchan@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Paul Bolle , hengelein Stefan Hi Jan, On Thu, Jul 23, 2015 at 3:47 PM, Jan Kara wrote: > On Thu 23-07-15 13:18:06, Valentin Rothberg wrote: >> commit 106542e7987c ("fs: Remove ext3 filesystem driver") removed ext3 >> and JBD, hence remove the superfluous condition. >> >> Signed-off-by: Valentin Rothberg >> --- >> I detected the issue with undertaker-checkpatch >> (https://undertaker.cs.fau.de) > > Thanks. I have added your patch into my tree. BTW, is the checker automated > enough that it could be made part of the 0-day tests Fengguang runs? The checker is automated, but it also produces false positives for certain kinds of bugs/defects, so we decided to run the bot on our servers at the University of Erlangen-Nuremberg. It runs daily on linux-next; we check the reports and fix the issue as above or we report it to the authors and maintainers. So we catch things as soon as they are in linux-next. If you want to check for symbolic issues (i.e., references on undefined Kconfig opionts/symbols) you can use scripts/checkkconfigsymbols.py which detects most of the cases. However, this script did not catch the upper case (I will check why). Kind regards, Valentin > Honza > >> mm/Kconfig | 8 +------- >> 1 file changed, 1 insertion(+), 7 deletions(-) >> >> diff --git a/mm/Kconfig b/mm/Kconfig >> index e79de2bd12cd..d4e6495a720f 100644 >> --- a/mm/Kconfig >> +++ b/mm/Kconfig >> @@ -299,15 +299,9 @@ config BOUNCE >> # On the 'tile' arch, USB OHCI needs the bounce pool since tilegx will often >> # have more than 4GB of memory, but we don't currently use the IOTLB to present >> # a 32-bit address to OHCI. So we need to use a bounce pool instead. >> -# >> -# We also use the bounce pool to provide stable page writes for jbd. jbd >> -# initiates buffer writeback without locking the page or setting PG_writeback, >> -# and fixing that behavior (a second time; jbd2 doesn't have this problem) is >> -# a major rework effort. Instead, use the bounce buffer to snapshot pages >> -# (until jbd goes away). The only jbd user is ext3. >> config NEED_BOUNCE_POOL >> bool >> - default y if (TILE && USB_OHCI_HCD) || (BLK_DEV_INTEGRITY && JBD) >> + default y if TILE && USB_OHCI_HCD >> >> config NR_QUICK >> int >> -- >> 1.9.1 >> > -- > Jan Kara > SUSE Labs, CR -- 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