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Diffstat (limited to 'arch/powerpc/mm/mmu_context_hash64.c')
-rw-r--r--arch/powerpc/mm/mmu_context_hash64.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/powerpc/mm/mmu_context_hash64.c b/arch/powerpc/mm/mmu_context_hash64.c
index 4e4efbc2658e..9ca6fe16cb29 100644
--- a/arch/powerpc/mm/mmu_context_hash64.c
+++ b/arch/powerpc/mm/mmu_context_hash64.c
@@ -118,8 +118,7 @@ static void destroy_pagetable_page(struct mm_struct *mm)
/* drop all the pending references */
count = ((unsigned long)pte_frag & ~PAGE_MASK) >> PTE_FRAG_SIZE_SHIFT;
/* We allow PTE_FRAG_NR fragments from a PTE page */
- count = atomic_sub_return(PTE_FRAG_NR - count, &page->_count);
- if (!count) {
+ if (page_ref_sub_and_test(page, PTE_FRAG_NR - count)) {
pgtable_page_dtor(page);
free_hot_cold_page(page, 0);
}