From: Michal Hocko <mhocko@suse.cz>
Date: Tue, 10 Jan 2012 23:07:21 +0000 (-0800)
Subject: hugetlb: clarify hugetlb_instantiation_mutex usage
X-Git-Tag: v3.3-rc1~113^2~111
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef009b25f4f8a77d2b32067d424d5ac757dcdc5b;p=pandora-kernel.git

hugetlb: clarify hugetlb_instantiation_mutex usage

Let's make it clear that we cannot race with other fault handlers due to
hugetlb (global) mutex.  Also make it clear that we want to keep pte_same
checks anayway to have a transition from the global mutex easier.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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