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authorHugh Dickins2016-05-19 17:12:54 -0700
committerLinus Torvalds2016-05-19 19:12:14 -0700
commitbf8616d5fa179d6c755f06726567c6d63c6fbbc7 (patch)
treee9bb568bea162e3f66da723d09d21449638b3878 /include
parent52b6f46bc163eef17ecba4cd552beeafe2b24453 (diff)
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/huge_mm.h4
1 files changed, 1 insertions, 3 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index d7b9e5346fba..419fb9e03447 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -28,9 +28,7 @@ extern int zap_huge_pmd(struct mmu_gather *tlb,
extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
unsigned long addr, unsigned long end,
unsigned char *vec);
-extern bool move_huge_pmd(struct vm_area_struct *vma,
- struct vm_area_struct *new_vma,
- unsigned long old_addr,
+extern bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr,
unsigned long new_addr, unsigned long old_end,
pmd_t *old_pmd, pmd_t *new_pmd);
extern int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,