linux-kernel - Re: [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear)

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Message-ID: <20070319120421.GZ18774@holomorphy.com>
Date:	Mon, 19 Mar 2007 05:04:21 -0700
From:	Bill Irwin <bill.irwin@...cle.com>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Blaisorblade <blaisorblade@...oo.it>,
	Bill Irwin <bill.irwin@...cle.com>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management <linux-mm@...ck.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear)

On Sun, Mar 18, 2007 at 03:50:10AM +0100, Nick Piggin wrote:
> Yes, that should be the case. So would this mean that nonlinear protections
> don't work on regular files? I guess that's OK if Oracle and UML both use
> tmpfs/shm?

Sometimes ramfs is also used in the Oracle case. I presume that's even
simpler than tmpfs. (Hugetlb, while also used in for the same general
buffer pool, is never used in conjunction with remap_file_pages() etc.)


-- wli
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