linux-kernel - Re: mm: convert vma->vm

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Message-ID: <4EBC46FD.5010109@jp.fujitsu.com>
Date:	Thu, 10 Nov 2011 16:49:49 -0500
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	benh@...nel.crashing.org
CC:	nai.xia@...il.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, akpm@...ux-foundation.org, hughd@...gle.com,
	dave@...ux.vnet.ibm.com, kamezawa.hiroyu@...fujitsu.com,
	lethal@...ux-sh.org, linux@....linux.org.uk
Subject: Re: mm: convert vma->vm_flags to 64bit

On 11/10/2011 4:12 PM, Benjamin Herrenschmidt wrote:
> On Thu, 2011-11-10 at 12:22 -0500, KOSAKI Motohiro wrote:
>> On 11/9/2011 11:09 PM, Nai Xia wrote:
>>> Hi all,
>>>
>>> Did this patch get merged at last, or on this way being merged, or
>>> just dropped ?
>>
>> Dropped.
>> Linus said he dislike 64bit enhancement.
> 
> Do you have a pointer ? (And a rationale)
> 
> I still want to put some arch flags in there at some point...

I'm sorry. I had got a machine crash awhile ago and I don't have
a past mail. If my remember is correctly, Linus said he worry about
an impact against 32bit x86 and he don't think current vm_flags
usage is enough efficient.

Maybe we need to ban useless arch specific flags at first.
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