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

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Message-ID: <20091218184321.GC17509@basil.fritz.box>
Date:	Fri, 18 Dec 2009 19:43:21 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Christoph Lameter <cl@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Avi Kivity <avi@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Andi Kleen <andi@...stfloor.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	minchan.kim@...il.com
Subject: Re: [mm][RFC][PATCH 0/11] mm accessor updates.

> The existing locking APIs are all hiding lock details at various levels.
> We have various specific APIs for specialized locks already Page locking
> etc.
> 
> How can we make progress on this if we cannot look at the mmap_sem

The point was to really make progress on vma locking we need new
semantics (finer grained range locking) that cannot be provided by a
simple wrapper.

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