From: Nick Piggin <npiggin@suse.de>
Date: Wed, 30 Jul 2008 05:23:13 +0000 (+1000)
Subject: powerpc/mm: Lockless get_user_pages_fast() for 64-bit (v3)
X-Git-Tag: v2.6.27-rc2~117^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f;p=pandora-kernel.git

powerpc/mm: Lockless get_user_pages_fast() for 64-bit (v3)

Implement lockless get_user_pages_fast for 64-bit powerpc.

Page table existence is guaranteed with RCU, and speculative page references
are used to take a reference to the pages without having a prior existence
guarantee on them.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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