[PATCH mm-unstable v9 01/31] mm: Add PAGE_TYPE_OP folio functions

["Vishal Moola (Oracle)" <vishal.moola@xxxxxxxxx>]

No folio equivalents for page type operations have been defined, so
define them for later folio conversions.

Also changes the Page##uname macros to take in const struct page* since
we only read the memory here.

Acked-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
---
 include/linux/page-flags.h | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 92a2063a0a23..9218028caf33 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -908,6 +908,8 @@ static inline bool is_page_hwpoison(struct page *page)
 
 #define PageType(page, flag)                                           \
        ((page->page_type & (PAGE_TYPE_BASE | flag)) == PAGE_TYPE_BASE)
+#define folio_test_type(folio, flag)                                   \
+       ((folio->page.page_type & (PAGE_TYPE_BASE | flag)) == PAGE_TYPE_BASE)
 
 static inline int page_type_has_type(unsigned int page_type)
 {
@@ -919,27 +921,41 @@ static inline int page_has_type(struct page *page)
        return page_type_has_type(page->page_type);
 }
 
-#define PAGE_TYPE_OPS(uname, lname)                                    \
-static __always_inline int Page##uname(struct page *page)              \
+#define PAGE_TYPE_OPS(uname, lname, fname)                             \
+static __always_inline int Page##uname(const struct page *page)                
\
 {                                                                      \
        return PageType(page, PG_##lname);                              \
 }                                                                      \
+static __always_inline int folio_test_##fname(const struct folio *folio)\
+{                                                                      \
+       return folio_test_type(folio, PG_##lname);                      \
+}                                                                      \
 static __always_inline void __SetPage##uname(struct page *page)                
\
 {                                                                      \
        VM_BUG_ON_PAGE(!PageType(page, 0), page);                       \
        page->page_type &= ~PG_##lname;                                 \
 }                                                                      \
+static __always_inline void __folio_set_##fname(struct folio *folio)   \
+{                                                                      \
+       VM_BUG_ON_FOLIO(!folio_test_type(folio, 0), folio);             \
+       folio->page.page_type &= ~PG_##lname;                           \
+}                                                                      \
 static __always_inline void __ClearPage##uname(struct page *page)      \
 {                                                                      \
        VM_BUG_ON_PAGE(!Page##uname(page), page);                       \
        page->page_type |= PG_##lname;                                  \
-}
+}                                                                      \
+static __always_inline void __folio_clear_##fname(struct folio *folio) \
+{                                                                      \
+       VM_BUG_ON_FOLIO(!folio_test_##fname(folio), folio);             \
+       folio->page.page_type |= PG_##lname;                            \
+}                                                                      \
 
 /*
  * PageBuddy() indicates that the page is free and in the buddy system
  * (see mm/page_alloc.c).
  */
-PAGE_TYPE_OPS(Buddy, buddy)
+PAGE_TYPE_OPS(Buddy, buddy, buddy)
 
 /*
  * PageOffline() indicates that the page is logically offline although the
@@ -963,7 +979,7 @@ PAGE_TYPE_OPS(Buddy, buddy)
  * pages should check PageOffline() and synchronize with such drivers using
  * page_offline_freeze()/page_offline_thaw().
  */
-PAGE_TYPE_OPS(Offline, offline)
+PAGE_TYPE_OPS(Offline, offline, offline)
 
 extern void page_offline_freeze(void);
 extern void page_offline_thaw(void);
@@ -973,12 +989,12 @@ extern void page_offline_end(void);
 /*
  * Marks pages in use as page tables.
  */
-PAGE_TYPE_OPS(Table, table)
+PAGE_TYPE_OPS(Table, table, pgtable)
 
 /*
  * Marks guardpages used with debug_pagealloc.
  */
-PAGE_TYPE_OPS(Guard, guard)
+PAGE_TYPE_OPS(Guard, guard, guard)
 
 extern bool is_free_buddy_page(struct page *page);
 
-- 
2.40.1