summaryrefslogtreecommitdiff
path: root/include/linux/page-flags.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/page-flags.h')
-rw-r--r--include/linux/page-flags.h18
1 files changed, 10 insertions, 8 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 908ee0aad554..2220bfec278e 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -689,6 +689,13 @@ static __always_inline bool folio_test_anon(const struct folio *folio)
return ((unsigned long)folio->mapping & PAGE_MAPPING_ANON) != 0;
}
+static __always_inline bool PageAnonNotKsm(const struct page *page)
+{
+ unsigned long flags = (unsigned long)page_folio(page)->mapping;
+
+ return (flags & PAGE_MAPPING_FLAGS) == PAGE_MAPPING_ANON;
+}
+
static __always_inline bool PageAnon(const struct page *page)
{
return folio_test_anon(page_folio(page));
@@ -718,13 +725,8 @@ static __always_inline bool folio_test_ksm(const struct folio *folio)
return ((unsigned long)folio->mapping & PAGE_MAPPING_FLAGS) ==
PAGE_MAPPING_KSM;
}
-
-static __always_inline bool PageKsm(const struct page *page)
-{
- return folio_test_ksm(page_folio(page));
-}
#else
-TESTPAGEFLAG_FALSE(Ksm, ksm)
+FOLIO_TEST_FLAG_FALSE(ksm)
#endif
u64 stable_page_flags(const struct page *page);
@@ -1137,14 +1139,14 @@ static __always_inline int PageAnonExclusive(const struct page *page)
static __always_inline void SetPageAnonExclusive(struct page *page)
{
- VM_BUG_ON_PGFLAGS(!PageAnon(page) || PageKsm(page), page);
+ VM_BUG_ON_PGFLAGS(!PageAnonNotKsm(page), page);
VM_BUG_ON_PGFLAGS(PageHuge(page) && !PageHead(page), page);
set_bit(PG_anon_exclusive, &PF_ANY(page, 1)->flags);
}
static __always_inline void ClearPageAnonExclusive(struct page *page)
{
- VM_BUG_ON_PGFLAGS(!PageAnon(page) || PageKsm(page), page);
+ VM_BUG_ON_PGFLAGS(!PageAnonNotKsm(page), page);
VM_BUG_ON_PGFLAGS(PageHuge(page) && !PageHead(page), page);
clear_bit(PG_anon_exclusive, &PF_ANY(page, 1)->flags);
}