linux-kernel - Re: [PATCH v6 0/5] dma-mapping: Patches for speeding up allocation

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Date:	Tue, 26 Jan 2016 15:59:37 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Douglas Anderson <dianders@...omium.org>
Cc:	linux@....linux.org.uk, mchehab@....samsung.com,
	robin.murphy@....com, tfiga@...omium.org, m.szyprowski@...sung.com,
	pawel@...iak.com, Dmitry Torokhov <dmitry.torokhov@...il.com>,
	hch@...radead.org, k.debski@...sung.com,
	laurent.pinchart+renesas@...asonboard.com, corbet@....net,
	mike.looijmans@...ic.nl, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, will.deacon@....com,
	jtp.park@...sung.com, penguin-kernel@...ove.sakura.ne.jp,
	kyungmin.park@...sung.com, carlo@...one.org,
	linux-media@...r.kernel.org, dan.j.williams@...el.com,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 0/5] dma-mapping: Patches for speeding up allocation

On Mon, 11 Jan 2016 09:30:22 -0800 Douglas Anderson <dianders@...omium.org> wrote:

> This series of patches will speed up memory allocation in dma-mapping
> quite a bit.

This is pretty much all ARM and driver stuff so I think I'll duck it. 
But I can merge it if nobody else feels a need to.

I saw a few acked-by/tested-by/etc from the v5 posting which weren't
carried over into v6 (might have been a timing race), so please fix
that up if there's an opportunity.

Regarding the new DMA_ATTR_ALLOC_SINGLE_PAGES hint: I suggest adding
"DMA_ATTR_ALLOC_SINGLE_PAGES is presently implemented only on ARM" to
the docs.  Or perhaps have a shot at implementing it elsewhere.

Typo in 4/5 changelog: "reqiurements"