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powerpc/mm: Use pmd_lockptr instead of opencoding it

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In later patch we switch pmd_lock from mm->page_table_lock to split pmd ptlock.
It avoid compilations issues, use pmd_lockptr helper.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2018-04-16 16:57:16 +05:30 committed by Michael Ellerman
parent 59879d542a
commit af60a4cf87
3 changed files with 8 additions and 6 deletions
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4
arch/powerpc/mm/pgtable-book3s64.c
View file

@ -37,7 +37,7 @@ int pmdp_set_access_flags(struct vm_area_struct *vma, unsigned long address,
int changed;
#ifdef CONFIG_DEBUG_VM
WARN_ON(!pmd_trans_huge(*pmdp) && !pmd_devmap(*pmdp));
assert_spin_locked(&vma->vm_mm->page_table_lock);
assert_spin_locked(pmd_lockptr(vma->vm_mm, pmdp));
#endif
changed = !pmd_same(*(pmdp), entry);
if (changed) {
@ -62,7 +62,7 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr,
{
#ifdef CONFIG_DEBUG_VM
WARN_ON(pte_present(pmd_pte(*pmdp)) && !pte_protnone(pmd_pte(*pmdp)));
assert_spin_locked(&mm->page_table_lock);
assert_spin_locked(pmd_lockptr(mm, pmdp));
WARN_ON(!(pmd_trans_huge(pmd) || pmd_devmap(pmd)));
#endif
trace_hugepage_set_pmd(addr, pmd_val(pmd));

8
arch/powerpc/mm/pgtable-hash64.c
View file

@ -193,7 +193,7 @@ unsigned long hash__pmd_hugepage_update(struct mm_struct *mm, unsigned long addr
#ifdef CONFIG_DEBUG_VM
WARN_ON(!hash__pmd_trans_huge(*pmdp) && !pmd_devmap(*pmdp));
assert_spin_locked(&mm->page_table_lock);
assert_spin_locked(pmd_lockptr(mm, pmdp));
#endif
__asm__ __volatile__(
@ -265,7 +265,8 @@ void hash__pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pgtable)
{
pgtable_t *pgtable_slot;
assert_spin_locked(&mm->page_table_lock);
assert_spin_locked(pmd_lockptr(mm, pmdp));
/*
* we store the pgtable in the second half of PMD
*/
@ -285,7 +286,8 @@ pgtable_t hash__pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
pgtable_t pgtable;
pgtable_t *pgtable_slot;
assert_spin_locked(&mm->page_table_lock);
assert_spin_locked(pmd_lockptr(mm, pmdp));
pgtable_slot = (pgtable_t *)pmdp + PTRS_PER_PMD;
pgtable = *pgtable_slot;
/*

2
arch/powerpc/mm/pgtable-radix.c
View file

@ -975,7 +975,7 @@ unsigned long radix__pmd_hugepage_update(struct mm_struct *mm, unsigned long add
#ifdef CONFIG_DEBUG_VM
WARN_ON(!radix__pmd_trans_huge(*pmdp) && !pmd_devmap(*pmdp));
assert_spin_locked(&mm->page_table_lock);
assert_spin_locked(pmd_lockptr(mm, pmdp));
#endif
old = radix__pte_update(mm, addr, (pte_t *)pmdp, clr, set, 1);