linux-kernel - [RFC][PATCH 0/5] VM

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Message-Id: <20140526145605.016140154@infradead.org>
Date:	Mon, 26 May 2014 16:56:05 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:	Christoph Lameter <cl@...ux.com>,
	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>,
	Peter Zijlstra <peterz@...radead.org>
Subject: [RFC][PATCH 0/5] VM_PINNED

Hi all,

I mentioned at LSF/MM that I wanted to revive this, and at the time there were
no disagreements.

I finally got around to refreshing the patch(es) so here goes.

These patches introduce VM_PINNED infrastructure, vma tracking of persistent
'pinned' page ranges. Pinned is anything that has a fixed phys address (as
required for say IO DMA engines) and thus cannot use the weaker VM_LOCKED. One
popular way to pin pages is through get_user_pages() but that not nessecarily
the only way.

Roland, as said, I need some IB assistance, see patches 4 and 5, where I got
lost in the qib and ipath code.

Patches 1-3 compile tested.

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