linux-kernel - Re: [PATCH v3 3/3] mm: Change __remove_pages() to call release_mem_region

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Date:	Wed, 10 Apr 2013 15:13:39 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Toshi Kani <toshi.kani@...com>
cc:	akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linuxram@...ibm.com,
	guz.fnst@...fujitsu.com, tmac@...com,
	isimatu.yasuaki@...fujitsu.com, wency@...fujitsu.com,
	tangchen@...fujitsu.com, jiang.liu@...wei.com
Subject: Re: [PATCH v3 3/3] mm: Change __remove_pages() to call
 release_mem_region_adjustable()

On Wed, 10 Apr 2013, Toshi Kani wrote:

> Changed __remove_pages() to call release_mem_region_adjustable().
> This allows a requested memory range to be released from
> the iomem_resource table even if it does not match exactly to
> an resource entry but still fits into.  The resource entries
> initialized at bootup usually cover the whole contiguous
> memory ranges and may not necessarily match with the size of
> memory hot-delete requests.
> 
> If release_mem_region_adjustable() failed, __remove_pages() emits
> a warning message and continues to proceed as it was the case
> with release_mem_region().  release_mem_region(), which is defined
> to __release_region(), emits a warning message and returns no error
> since a void function.
> 
> Signed-off-by: Toshi Kani <toshi.kani@...com>
> Reviewed-by : Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>

Acked-by: David Rientjes <rientjes@...gle.com>
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