linux-kernel - Re: [PATCH V2 1/2] mm: Update generic gup implementation to handle hugepage directory

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Message-Id: <20141023.235511.1672975903756808524.davem@davemloft.net>
Date:	Thu, 23 Oct 2014 23:55:11 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	benh@...nel.crashing.org
Cc:	akpm@...ux-foundation.org, aneesh.kumar@...ux.vnet.ibm.com,
	steve.capper@...aro.org, aarcange@...hat.com, mpe@...erman.id.au,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-arch@...r.kernel.org,
	hannes@...xchg.org
Subject: Re: [PATCH V2 1/2] mm: Update generic gup implementation to handle
 hugepage directory

From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Date: Fri, 24 Oct 2014 10:40:35 +1100

> Another option would be to make the generic code use something defined
> by the arch to decide whether to use speculative get or
> not. I like the idea of keeping the bulk of that code generic...

Me too.  We could have inlines that do either speculative or
non-speculative gets on the pages in some header file and hide
the ifdefs in there.
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