diff options
Diffstat (limited to 'mm/ksm.c')
| -rw-r--r-- | mm/ksm.c | 10 |
1 files changed, 5 insertions, 5 deletions
@@ -542,7 +542,7 @@ static struct page *get_ksm_page(struct stable_node *stable_node, bool lock_it) expected_mapping = (void *)stable_node + (PAGE_MAPPING_ANON | PAGE_MAPPING_KSM); again: - kpfn = ACCESS_ONCE(stable_node->kpfn); + kpfn = READ_ONCE(stable_node->kpfn); page = pfn_to_page(kpfn); /* @@ -551,7 +551,7 @@ again: * but on Alpha we need to be more careful. */ smp_read_barrier_depends(); - if (ACCESS_ONCE(page->mapping) != expected_mapping) + if (READ_ONCE(page->mapping) != expected_mapping) goto stale; /* @@ -577,14 +577,14 @@ again: cpu_relax(); } - if (ACCESS_ONCE(page->mapping) != expected_mapping) { + if (READ_ONCE(page->mapping) != expected_mapping) { put_page(page); goto stale; } if (lock_it) { lock_page(page); - if (ACCESS_ONCE(page->mapping) != expected_mapping) { + if (READ_ONCE(page->mapping) != expected_mapping) { unlock_page(page); put_page(page); goto stale; @@ -600,7 +600,7 @@ stale: * before checking whether node->kpfn has been changed. */ smp_rmb(); - if (ACCESS_ONCE(stable_node->kpfn) != kpfn) + if (READ_ONCE(stable_node->kpfn) != kpfn) goto again; remove_node_from_stable_tree(stable_node); return NULL; |