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mm: create FOLIO_FLAG_FALSE and FOLIO_TYPE_OPS macros
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commit 12bbaae upstream.

Following the separation of FOLIO_FLAGS from PAGEFLAGS, separate
FOLIO_FLAG_FALSE from PAGEFLAG_FALSE and FOLIO_TYPE_OPS from
PAGE_TYPE_OPS.

Link: https://lkml.kernel.org/r/20240321142448.1645400-3-willy@infradead.org
Fixes: 9c5ccf2 ("mm: remove HUGETLB_PAGE_DTOR")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@gregkh
Matthew Wilcox (Oracle) authored and gregkh committed May 2, 2024
1 parent 56b99a5 commit 1eb691e
Showing 1 changed file with 47 additions and 23 deletions.
70 changes: 47 additions & 23 deletions include/linux/page-flags.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -432,30 +432,51 @@ static __always_inline int TestClearPage##uname(struct page *page) \
TESTSETFLAG(uname, lname, policy) \
TESTCLEARFLAG(uname, lname, policy)

#define FOLIO_TEST_FLAG_FALSE(name) \
static inline bool folio_test_##name(const struct folio *folio) \
{ return false; }
#define FOLIO_SET_FLAG_NOOP(name) \
static inline void folio_set_##name(struct folio *folio) { }
#define FOLIO_CLEAR_FLAG_NOOP(name) \
static inline void folio_clear_##name(struct folio *folio) { }
#define __FOLIO_SET_FLAG_NOOP(name) \
static inline void __folio_set_##name(struct folio *folio) { }
#define __FOLIO_CLEAR_FLAG_NOOP(name) \
static inline void __folio_clear_##name(struct folio *folio) { }
#define FOLIO_TEST_SET_FLAG_FALSE(name) \
static inline bool folio_test_set_##name(struct folio *folio) \
{ return false; }
#define FOLIO_TEST_CLEAR_FLAG_FALSE(name) \
static inline bool folio_test_clear_##name(struct folio *folio) \
{ return false; }

#define FOLIO_FLAG_FALSE(name) \
FOLIO_TEST_FLAG_FALSE(name) \
FOLIO_SET_FLAG_NOOP(name) \
FOLIO_CLEAR_FLAG_NOOP(name)

#define TESTPAGEFLAG_FALSE(uname, lname) \
static inline bool folio_test_##lname(const struct folio *folio) { return false; } \
FOLIO_TEST_FLAG_FALSE(lname) \
static inline int Page##uname(const struct page *page) { return 0; }

#define SETPAGEFLAG_NOOP(uname, lname) \
static inline void folio_set_##lname(struct folio *folio) { } \
FOLIO_SET_FLAG_NOOP(lname) \
static inline void SetPage##uname(struct page *page) { }

#define CLEARPAGEFLAG_NOOP(uname, lname) \
static inline void folio_clear_##lname(struct folio *folio) { } \
FOLIO_CLEAR_FLAG_NOOP(lname) \
static inline void ClearPage##uname(struct page *page) { }

#define __CLEARPAGEFLAG_NOOP(uname, lname) \
static inline void __folio_clear_##lname(struct folio *folio) { } \
__FOLIO_CLEAR_FLAG_NOOP(lname) \
static inline void __ClearPage##uname(struct page *page) { }

#define TESTSETFLAG_FALSE(uname, lname) \
static inline bool folio_test_set_##lname(struct folio *folio) \
{ return 0; } \
FOLIO_TEST_SET_FLAG_FALSE(lname) \
static inline int TestSetPage##uname(struct page *page) { return 0; }

#define TESTCLEARFLAG_FALSE(uname, lname) \
static inline bool folio_test_clear_##lname(struct folio *folio) \
{ return 0; } \
FOLIO_TEST_CLEAR_FLAG_FALSE(lname) \
static inline int TestClearPage##uname(struct page *page) { return 0; }

#define PAGEFLAG_FALSE(uname, lname) TESTPAGEFLAG_FALSE(uname, lname) \
Expand Down Expand Up @@ -937,35 +958,38 @@ static inline int page_has_type(struct page *page)
return page_type_has_type(page->page_type);
}

#define FOLIO_TYPE_OPS(lname, fname) \
static __always_inline bool folio_test_##fname(const struct folio *folio)\
{ \
return folio_test_type(folio, 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 __folio_clear_##fname(struct folio *folio) \
{ \
VM_BUG_ON_FOLIO(!folio_test_##fname(folio), folio); \
folio->page.page_type |= PG_##lname; \
}

#define PAGE_TYPE_OPS(uname, lname, fname) \
FOLIO_TYPE_OPS(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
Expand Down

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