The patch titled
Subject: page-flags: move code around
has been removed from the -mm tree. Its filename was
page-flags-move-code-around.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: page-flags: move code around
The preparation patch: we are going to use compound_head(), PageTail() and
PageCompound() to define page-flags helpers.
Let's define them before macros.
We cannot user PageHead() helper in PageCompound() as it's not yet
defined -- use test_bit(PG_head, &page->flags) instead.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Steve Capper <steve.capper@xxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Jerome Marchand <jmarchan@xxxxxxxxxx>
Cc: Jérôme Glisse <jglisse@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/page-flags.h | 41 +++++++++++++++++------------------
1 file changed, 21 insertions(+), 20 deletions(-)
diff -puN include/linux/page-flags.h~page-flags-move-code-around include/linux/page-flags.h
--- a/include/linux/page-flags.h~page-flags-move-code-around
+++ a/include/linux/page-flags.h
@@ -133,6 +133,27 @@ enum pageflags {
#ifndef __GENERATING_BOUNDS_H
+struct page; /* forward declaration */
+
+static inline struct page *compound_head(struct page *page)
+{
+ unsigned long head = READ_ONCE(page->compound_head);
+
+ if (unlikely(head & 1))
+ return (struct page *) (head - 1);
+ return page;
+}
+
+static inline int PageTail(struct page *page)
+{
+ return READ_ONCE(page->compound_head) & 1;
+}
+
+static inline int PageCompound(struct page *page)
+{
+ return test_bit(PG_head, &page->flags) || PageTail(page);
+}
+
/*
* Macros to create function definitions for page flags
*/
@@ -204,7 +225,6 @@ static inline int __TestClearPage##uname
#define TESTSCFLAG_FALSE(uname) \
TESTSETFLAG_FALSE(uname) TESTCLEARFLAG_FALSE(uname)
-struct page; /* forward declaration */
TESTPAGEFLAG(Locked, locked)
PAGEFLAG(Error, error) TESTCLEARFLAG(Error, error)
@@ -395,11 +415,6 @@ static inline void set_page_writeback_ke
__PAGEFLAG(Head, head) CLEARPAGEFLAG(Head, head)
-static inline int PageTail(struct page *page)
-{
- return READ_ONCE(page->compound_head) & 1;
-}
-
static inline void set_compound_head(struct page *page, struct page *head)
{
WRITE_ONCE(page->compound_head, (unsigned long)head + 1);
@@ -410,20 +425,6 @@ static inline void clear_compound_head(s
WRITE_ONCE(page->compound_head, 0);
}
-static inline struct page *compound_head(struct page *page)
-{
- unsigned long head = READ_ONCE(page->compound_head);
-
- if (unlikely(head & 1))
- return (struct page *) (head - 1);
- return page;
-}
-
-static inline int PageCompound(struct page *page)
-{
- return PageHead(page) || PageTail(page);
-
-}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline void ClearPageCompound(struct page *page)
{
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
thp-update-documentation.patch
thp-allow-mlocked-thp-again.patch
mm-prepare-page_referenced-and-page_idle-to-new-thp-refcounting.patch
thp-add-debugfs-handle-to-split-all-huge-pages.patch
thp-increase-split_huge_page-success-rate.patch
thp-fix-split_huge_page-after-mremap-of-thp.patch
memblock-fix-section-mismatch.patch
mm-fix-locking-order-in-mm_take_all_locks.patch
mm-make-optimistic-check-for-swapin-readahead-fix.patch
mm-make-swapin-readahead-to-improve-thp-collapse-rate-fix.patch
mm-make-swapin-readahead-to-improve-thp-collapse-rate-fix-2.patch
mm-make-swapin-readahead-to-improve-thp-collapse-rate-fix-3.patch
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