linux-kernel - Re: [PATCH 2/8] Mark powerpc memory resources as busy

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Message-ID: <51FC0315.1010601@linux.vnet.ibm.com>
Date:	Fri, 02 Aug 2013 14:05:57 -0500
From:	Nathan Fontenot <nfont@...ux.vnet.ibm.com>
To:	Michael Ellerman <michael@...erman.id.au>
CC:	linux-mm <linux-mm@...ck.org>, isimatu.yasuaki@...fujitsu.com,
	linuxppc-dev@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 2/8] Mark powerpc memory resources as busy

On 08/01/2013 09:28 PM, Michael Ellerman wrote:
> On Wed, Jul 24, 2013 at 01:36:34PM -0500, Nathan Fontenot wrote:
>> Memory I/O resources need to be marked as busy or else we cannot remove
>> them when doing memory hot remove.
> 
> I would have thought it was the opposite?

Me too.

As it turns out the code in kernel/resource.c checks to make sure the
IORESOURCE_BUSY flag is set when trying to release a resource.

-Nathan

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