From: David Howells <dhowells@redhat.com>
Date: Thu, 25 Mar 2010 16:48:38 +0000 (+0000)
Subject: NOMMU: Revert 'nommu: get_user_pages(): pin last page on non-page-aligned start'
X-Git-Tag: v2.6.34-rc3~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7561e8ca0dfaf6fca3feef982830de3b65300e5b;p=pandora-kernel.git

NOMMU: Revert 'nommu: get_user_pages(): pin last page on non-page-aligned start'

Revert the following patch:

	commit c08c6e1f54c85fc299cf9f88cf330d6dd28a9a1d
	Author: Steven J. Magnani <steve@digidescorp.com>
	Date:   Fri Mar 5 13:42:24 2010 -0800

	nommu: get_user_pages(): pin last page on non-page-aligned start

As it assumes that the mappings begin at the start of pages - something that
isn't necessarily true on NOMMU systems.  On NOMMU systems, it is possible for
a mapping to only occupy part of the page, and not necessarily touch either end
of it; in fact it's also possible for multiple non-overlapping mappings to
coexist on one page (consider direct mappings of ROMFS files, for example).

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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