linux-kernel - Re: [mm][RFC][PATCH 0/11] mm accessor updates.

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Date:	Wed, 16 Dec 2009 11:28:06 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>, cl@...ux-foundation.org,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"mingo@...e.hu" <mingo@...e.hu>, minchan.kim@...il.com
Subject: Re: [mm][RFC][PATCH 0/11] mm accessor updates.

> > Also the patches didn't fare too well in testing unfortunately.
> > 
> > I suspect we'll rather need multiple locks split per address
> > space range.
> 
> This set doesn't include any changes of the logic. Just replace all mmap_sem.
> I think this is good start point (for introducing another logic etc..)

The problem is that for range locking simple wrapping the locks
in macros is not enough. You need more changes.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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