linux-kernel - Re: [PATCH 01/37] x86: move range related operation to one file

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Date:	Wed, 20 Jan 2010 11:59:54 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Christoph Lameter <cl@...ux-foundation.org>
CC:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH 01/37] x86: move range related operation to one file

On 01/20/2010 11:51 AM, Christoph Lameter wrote:
> On Wed, 20 Jan 2010, Yinghai Lu wrote:
> 
>>> Subtract range can now do what update_range did? How so?
>>
>> update_range was introduced at first. and actually it did sth like subtract range.
>>
>> and subtract range is more accurate.
> 
> Subtract range suggest that you may be removing the range.
> 
> subtract_from_range?

void subtract_range(struct range *range, int az, u64 start, u64 end)

struct range *range, int az : is the original range holder.

and will remove [start,  end)

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