huge mm: move_huge_pmd does not need new_vma

Remove move_huge_pmd()'s redundant new_vma arg: all it was used for was
a VM_NOHUGEPAGE check on new_vma flags, but the new_vma is cloned from
the old vma, so a trans_huge_pmd in the new_vma will be as acceptable as
it was in the old vma, alignment and size permitting.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andres Lagar-Cavilla <andreslc@google.com>
Cc: Yang Shi <yang.shi@linaro.org>
Cc: Ning Qu <quning@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Andres Lagar-Cavilla <andreslc@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 3 deletions

diff --git a/mm/mremap.c b/mm/mremap.c
index 3fa0a467df66..7d98fe1adc12 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -198,9 +198,8 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
                                 /* See comment in move_ptes() */
                                 if (need_rmap_locks)
                                         anon_vma_lock_write(vma->anon_vma);
-                                moved = move_huge_pmd(vma, new_vma, old_addr,
-                                                    new_addr, old_end,
-                                                    old_pmd, new_pmd);
+                                moved = move_huge_pmd(vma, old_addr, new_addr,
+                                                    old_end, old_pmd, new_pmd);
                                 if (need_rmap_locks)
                                         anon_vma_unlock_write(vma->anon_vma);
                                 if (moved) {