linux-kernel - Re: Resurrecting the VM

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Message-ID: <20150305211306.GV21418@twins.programming.kicks-ass.net>
Date:	Thu, 5 Mar 2015 22:13:06 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Eric B Munson <emunson@...mai.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	Mike Marciniszyn <infinipath@...el.com>
Subject: Re: Resurrecting the VM_PINNED discussion

On Thu, Mar 05, 2015 at 03:09:42PM -0600, Christoph Lameter wrote:
> On Thu, 5 Mar 2015, Peter Zijlstra wrote:
> 
> > > Am I missing something about why it was never merged?
> >
> > Because I got lost in IB code and didn't manage to bribe anyone into
> > fixing that for me.
> 
> Well the complexity increased since then with the on demand pinning,
> mmu notifiers etc etc ...

Clearly I've not been paying attention, what? Is this that drug induced
stuff benh was babbling about a while back?

> I thought the clear distinction between pinning and mlocking would do the
> trick?

Nah, it still leaves the accounting up shit creek.
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