linux-kernel - Re: [PATCH] mtd: fix: avoid race condition when accessing mtd->usecount

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Message-ID: <20150512180423.GA11598@ld-irv-0074>
Date:	Tue, 12 May 2015 11:04:23 -0700
From:	Brian Norris <computersforpeace@...il.com>
To:	"Cantavenera, Giuseppe (EXT-Other - DE/Ulm)" 
	<giuseppe.cantavenera.ext@...ia.com>
Cc:	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"Restelli, Lorenzo (EXT-Other - DE/Ulm)" 
	<lorenzo.restelli.ext@...ia.com>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>,
	"Sverdlin, Alexander (Nokia - DE/Ulm)" <alexander.sverdlin@...ia.com>,
	zhangxingcai <zhangxingcai@...wei.com>,
	"fengfuqiu@...wei.com" <fengfuqiu@...wei.com>,
	"tanhaijun@...wei.com" <tanhaijun@...wei.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mtd: fix: avoid race condition when accessing
 mtd->usecount

On Tue, May 12, 2015 at 06:38:34AM +0000, Cantavenera, Giuseppe (EXT-Other - DE/Ulm) wrote:
> > -----Original Message-----
> > From: ext Brian Norris [mailto:computersforpeace@...il.com]
> > Sent: Tuesday, May 12, 2015 12:25 AM
> > To: Cantavenera, Giuseppe (EXT-Other - DE/Ulm)
> > Cc: linux-mtd@...ts.infradead.org; Restelli, Lorenzo (EXT-Other -
> > DE/Ulm); dwmw2@...radead.org; stable@...r.kernel.org; Sverdlin,
> > Alexander (Nokia - DE/Ulm); zhangxingcai; fengfuqiu@...wei.com;
> > tanhaijun@...wei.com; linux-kernel@...r.kernel.org
> > Subject: Re: [PATCH] mtd: fix: avoid race condition when accessing mtd-
> > >usecount
> > 
> > On Mon, May 11, 2015 at 07:44:26AM +0000, Cantavenera, Giuseppe (EXT-
> > Other - DE/Ulm) wrote:
> > > > -----Original Message-----
> > > > From: ext Brian Norris [mailto:computersforpeace@...il.com]
> > > > Sent: Friday, May 08, 2015 2:27 AM
> > > > To: Cantavenera, Giuseppe (EXT-Other - DE/Ulm)
> > > > Cc: linux-mtd@...ts.infradead.org; Restelli, Lorenzo (EXT-Other -
> > > > DE/Ulm); dwmw2@...radead.org; stable@...r.kernel.org; Sverdlin,
> > > > Alexander (Nokia - DE/Ulm); zhangxingcai; fengfuqiu@...wei.com;
> > > > tanhaijun@...wei.com; linux-kernel@...r.kernel.org
> > > > Subject: Re: [PATCH] mtd: fix: avoid race condition when accessing
> > mtd-
> > > > >usecount
> > > >
> > > > On Thu, May 07, 2015 at 05:17:45PM -0700, Brian Norris wrote:
> > > > > On Thu, May 07, 2015 at 05:10:12PM -0700, Brian Norris wrote:
> > > > > > On Tue, Apr 21, 2015 at 12:20:22PM +0200, Giuseppe Cantavenera
> > > > wrote:
> 
> > Can I get a 'Tested-by', or at least an 'Acked-by' for the patch? I
> > tested it, but I don't think I can reproduce your original problem very
> > easily.
> > 
> > Brian
> 
> Hello Brian,
> 
> We were able to do some long runs last night and as expected
> this patch seems to address the issue pretty well.
> 
> Thanks,
> Giuseppe
> 
> Tested-by: Giuseppe Cantavenera <giuseppe.cantavenera.ext@...ia.com>

Great, thanks to all of you. I reworked the patch description and
applied this to l2-mtd.git.

Brian
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