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authorAndreas Sandberg <andreas@sandberg.pp.se>2014-01-21 15:49:09 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-21 16:19:44 -0800
commite8569dd299dbc7bac878325c0bdc7aa449eae479 (patch)
treedd512bba20e9413ee8bf1a0eff169d9e017051ad /include/linux/mempolicy.h
parent549543dff797ae1081f61a69f8511c61806c3735 (diff)
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mm/hugetlb.c: call MMU notifiers when copying a hugetlb page range
When copy_hugetlb_page_range() is called to copy a range of hugetlb mappings, the secondary MMUs are not notified if there is a protection downgrade, which breaks COW semantics in KVM. This patch adds the necessary MMU notifier calls. Signed-off-by: Andreas Sandberg <andreas@sandberg.pp.se> Acked-by: Steve Capper <steve.capper@linaro.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mempolicy.h')
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