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thp: change split_huge_page_pmd() interface

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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 <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kirill A. Shutemov 2012-12-12 13:50:59 -08:00 • committed by Linus Torvalds
commit e180377f1a
10 changed files with 37 additions and 16 deletions
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2
mm/mremap.c
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@ -182,7 +182,7 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
need_flush = true;
continue;
} else if (!err) {
split_huge_page_pmd(vma->vm_mm, old_pmd);
split_huge_page_pmd(vma, old_addr, old_pmd);
}
VM_BUG_ON(pmd_trans_huge(*old_pmd));
}