thp: change split_huge_page_pmd() interface

Pass vma instead of mm and add address parameter.

In most cases we already have vma on the stack. We provides
split_huge_page_pmd_mm() for few cases when we have mm, but not vma.

This change is preparation to huge zero pmd splitting implementation.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@linux.intel.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/memory.c b/mm/memory.c
index 259b34fe1347..f9a4b0cb8623 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1243,7 +1243,7 @@ static inline unsigned long zap_pmd_range(struct mmu_gather *tlb,
                                         BUG();
                                 }
 #endif
-                                split_huge_page_pmd(vma->vm_mm, pmd);
+                                split_huge_page_pmd(vma, addr, pmd);
                         } else if (zap_huge_pmd(tlb, vma, pmd, addr))
                                 goto next;
                         /* fall through */
@@ -1512,7 +1512,7 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
         }
         if (pmd_trans_huge(*pmd)) {
                 if (flags & FOLL_SPLIT) {
-                        split_huge_page_pmd(mm, pmd);
+                        split_huge_page_pmd(vma, address, pmd);
                         goto split_fallthrough;
                 }
                 spin_lock(&mm->page_table_lock);