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thp: mprotect: transparent huge page support
Natively handle huge pmds when changing page tables on behalf of mprotect(). I left out update_mmu_cache() because we do not need it on x86 anyway but more importantly the interface works on ptes, not pmds. Signed-off-by: Johannes Weiner <firstname.lastname@example.org> Signed-off-by: Andrea Arcangeli <email@example.com> Reviewed-by: Rik van Riel <firstname.lastname@example.org> Signed-off-by: Andrew Morton <email@example.com> Signed-off-by: Linus Torvalds <firstname.lastname@example.org>
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