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powerpc/mm: pmd_devmap implies pmd_large().

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large devmap usage is dependent on THP. Hence once check is sufficient.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2019-05-14 11:33:01 +05:30 committed by Michael Ellerman
parent d6eacedd1f
commit 1ecf2cdc74
2 changed files with 2 additions and 2 deletions
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2
arch/powerpc/mm/book3s64/pgtable.c
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@ -76,7 +76,7 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr,
WARN_ON(pte_hw_valid(pmd_pte(*pmdp)) && !pte_protnone(pmd_pte(*pmdp)));
assert_spin_locked(pmd_lockptr(mm, pmdp));
WARN_ON(!(pmd_large(pmd) || pmd_devmap(pmd)));
WARN_ON(!(pmd_large(pmd)));
#endif
trace_hugepage_set_pmd(addr, pmd_val(pmd));
return set_pte_at(mm, addr, pmdp_ptep(pmdp), pmd_pte(pmd));

2
arch/powerpc/mm/pgtable_64.c
View File

@ -333,7 +333,7 @@ struct page *pud_page(pud_t pud)
struct page *pmd_page(pmd_t pmd)
{
if (pmd_is_leaf(pmd)) {
VM_WARN_ON(!(pmd_large(pmd) || pmd_huge(pmd) || pmd_devmap(pmd)));
VM_WARN_ON(!(pmd_large(pmd) || pmd_huge(pmd)));
return pte_page(pmd_pte(pmd));
}
return virt_to_page(pmd_page_vaddr(pmd));