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From: Dan Carpenter <error27@gmail.com>
To: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Len Brown <lenb@kernel.org>, Shaohua Li <shaohua.li@intel.com>,
	Zhang Rui <rui.zhang@intel.com>,
	Zhao Yakui <yakui.zhao@intel.com>,
	linux-acpi@vger.kernel.org, vegardno@ifi.uio.no,
	casteyde.christian@free.fr
Subject: Re: [patch] acpi: silence kmemcheck false positive
Date: Fri, 23 Apr 2010 21:17:14 +0200	[thread overview]
Message-ID: <20100423191714.GJ29093@bicker> (raw)
In-Reply-To: <201004221632.21129.bjorn.helgaas@hp.com>

On Thu, Apr 22, 2010 at 04:32:20PM -0600, Bjorn Helgaas wrote:
> > > -	event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
> > > +	event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC | __GFP_NOTRACK_FALSE_POSITIVE);
> 
> Just in terms of reading the code, this solution is fairly ugly.
> I think __GFP_NOTRACK should be sort of the last resort, after we've
> ruled out all the more conventional strategies.
> 
> Has anybody tried any of the alternatives Vegard suggested here:
> https://bugzilla.kernel.org/show_bug.cgi?id=14998#c35 ?

Another potential solution would be to change the kmalloc() to a
kzalloc().

This isn't really my code, I was just randomly poking through bugzilla.
Tell me which approach you prefer and I'll do it.

regards,
dan carpenter


  reply	other threads:[~2010-04-23 19:17 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-22 19:43 [patch] acpi: silence kmemcheck false positive Dan Carpenter
2010-04-22 20:02 ` Dan Carpenter
2010-04-22 22:32   ` Bjorn Helgaas
2010-04-23 19:17     ` Dan Carpenter [this message]
2010-04-26 22:19     ` Dan Carpenter
2010-04-26 22:23     ` [patch v2] " Dan Carpenter
2010-04-27  7:15       ` Len Brown

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