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arch/powerpc/mm/subpage-prot.c: use walk->vma and walk_page_vma() 

We don't have to use mm_walk->private to pass vma to the callback function
because of mm_walk->vma.  And walk_page_vma() is useful if we walk over a
single vma.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Naoya Horiguchi 2015-02-11 15:28:00 -08:00 committed by Linus Torvalds
parent 26bcd64aa9
commit 1757bbd9c5
1 changed files with 2 additions and 4 deletions
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6
arch/powerpc/mm/subpage-prot.c
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@ -134,7 +134,7 @@ static void subpage_prot_clear(unsigned long addr, unsigned long len)
static int subpage_walk_pmd_entry(pmd_t *pmd, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
struct vm_area_struct *vma = walk->private;
struct vm_area_struct *vma = walk->vma;
split_huge_page_pmd(vma, addr, pmd);
return 0;
}
@ -163,9 +163,7 @@ static void subpage_mark_vma_nohuge(struct mm_struct *mm, unsigned long addr,
if (vma->vm_start >= (addr + len))
break;
vma->vm_flags |= VM_NOHUGEPAGE;
subpage_proto_walk.private = vma;
walk_page_range(vma->vm_start, vma->vm_end,
&subpage_proto_walk);
walk_page_vma(vma, &subpage_proto_walk);
vma = vma->vm_next;
}
}