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powerpc/mm: use generic version of pmdp_clear_flush()

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Also move the pmd_trans_huge check to generic code.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Aneesh Kumar K.V 2015-06-24 16:57:42 -07:00 committed by Linus Torvalds
parent 15a25b2ead
commit f28b6ff8c3
5 changed files with 27 additions and 22 deletions
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4
arch/powerpc/include/asm/pgtable-ppc64.h
View File

@ -573,10 +573,6 @@ extern int pmdp_clear_flush_young(struct vm_area_struct *vma,
extern pmd_t pmdp_get_and_clear(struct mm_struct *mm,
unsigned long addr, pmd_t *pmdp);
#define __HAVE_ARCH_PMDP_CLEAR_FLUSH
extern pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp);
#define __HAVE_ARCH_PMDP_SET_WRPROTECT
static inline void pmdp_set_wrprotect(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp)

11
arch/powerpc/mm/pgtable_64.c
View File

@ -554,17 +554,6 @@ unsigned long pmd_hugepage_update(struct mm_struct *mm, unsigned long addr,
return old;
}
pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
pmd_t pmd;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
VM_BUG_ON(!pmd_trans_huge(*pmdp));
pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
return pmd;
}
pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{

8
arch/s390/include/asm/pgtable.h
View File

@ -1548,6 +1548,14 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,
}
}
static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
unsigned long address,
pmd_t *pmdp)
{
return pmdp_get_and_clear(vma->vm_mm, address, pmdp);
}
#define pmdp_collapse_flush pmdp_collapse_flush
#define pfn_pmd(pfn, pgprot) mk_pmd_phys(__pa((pfn) << PAGE_SHIFT), (pgprot))
#define mk_pmd(page, pgprot) pfn_pmd(page_to_pfn(page), (pgprot))

9
include/asm-generic/pgtable.h
View File

@ -191,13 +191,8 @@ extern void pmdp_splitting_flush(struct vm_area_struct *vma,
#ifndef pmdp_collapse_flush
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
unsigned long address,
pmd_t *pmdp)
{
return pmdp_clear_flush(vma, address, pmdp);
}
#define pmdp_collapse_flush pmdp_collapse_flush
extern pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
#else
static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
unsigned long address,

17
mm/pgtable-generic.c
View File

@ -126,6 +126,7 @@ pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
{
pmd_t pmd;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
VM_BUG_ON(!pmd_trans_huge(*pmdp));
pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
return pmd;
@ -198,3 +199,19 @@ void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
#ifndef pmdp_collapse_flush
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
pmd_t pmd;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
VM_BUG_ON(pmd_trans_huge(*pmdp));
pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
return pmd;
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif