The patch titled
Subject: mm: create FOLIO_FLAG_FALSE and FOLIO_TYPE_OPS macros
has been added to the -mm mm-unstable branch. Its filename is
mm-create-folio_flag_false-and-folio_type_ops-macros.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-create-folio_flag_false-and-folio_type_ops-macros.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm: create FOLIO_FLAG_FALSE and FOLIO_TYPE_OPS macros
Date: Thu, 21 Mar 2024 14:24:40 +0000
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@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Oscar Salvador <osalvador@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/page-flags.h | 70 +++++++++++++++++++++++------------
1 file changed, 47 insertions(+), 23 deletions(-)
--- a/include/linux/page-flags.h~mm-create-folio_flag_false-and-folio_type_ops-macros
+++ a/include/linux/page-flags.h
@@ -458,30 +458,51 @@ static __always_inline int TestClearPage
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) \
@@ -977,35 +998,38 @@ static inline int page_has_type(const st
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
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-increase-folio-batch-size.patch
mm-always-initialise-folio-_deferred_list.patch
mm-create-folio_flag_false-and-folio_type_ops-macros.patch
mm-remove-folio_prep_large_rmappable.patch
mm-support-page_mapcount-on-page_has_type-pages.patch
mm-turn-folio_test_hugetlb-into-a-pagetype.patch
mm-remove-a-call-to-compound_head-from-is_page_hwpoison.patch
mm-free-up-pg_slab.patch
mm-improve-dumping-of-mapcount-and-page_type.patch
hugetlb-remove-mention-of-destructors.patch
