* [merged] mm-page_owner-change-split_page_owner-to-take-a-count.patch removed from -mm tree
@ 2020-10-16 20:48 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2020-10-16 20:48 UTC (permalink / raw
To: kirill.shutemov, mm-commits, sjpark, willy, ying.huang
The patch titled
Subject: mm/page_owner: change split_page_owner to take a count
has been removed from the -mm tree. Its filename was
mm-page_owner-change-split_page_owner-to-take-a-count.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: mm/page_owner: change split_page_owner to take a count
The implementation of split_page_owner() prefers a count rather than the
old order of the page. When we support a variable size THP, we won't
have the order at this point, but we will have the number of pages.
So change the interface to what the caller and callee would prefer.
Link: https://lkml.kernel.org/r/20200908195539.25896-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: SeongJae Park <sjpark@amazon.de>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
include/linux/page_owner.h | 6 +++---
mm/huge_memory.c | 2 +-
mm/page_owner.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
--- a/include/linux/page_owner.h~mm-page_owner-change-split_page_owner-to-take-a-count
+++ a/include/linux/page_owner.h
@@ -11,7 +11,7 @@ extern struct page_ext_operations page_o
extern void __reset_page_owner(struct page *page, unsigned int order);
extern void __set_page_owner(struct page *page,
unsigned int order, gfp_t gfp_mask);
-extern void __split_page_owner(struct page *page, unsigned int order);
+extern void __split_page_owner(struct page *page, unsigned int nr);
extern void __copy_page_owner(struct page *oldpage, struct page *newpage);
extern void __set_page_owner_migrate_reason(struct page *page, int reason);
extern void __dump_page_owner(struct page *page);
@@ -31,10 +31,10 @@ static inline void set_page_owner(struct
__set_page_owner(page, order, gfp_mask);
}
-static inline void split_page_owner(struct page *page, unsigned int order)
+static inline void split_page_owner(struct page *page, unsigned int nr)
{
if (static_branch_unlikely(&page_owner_inited))
- __split_page_owner(page, order);
+ __split_page_owner(page, nr);
}
static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
{
--- a/mm/huge_memory.c~mm-page_owner-change-split_page_owner-to-take-a-count
+++ a/mm/huge_memory.c
@@ -2454,7 +2454,7 @@ static void __split_huge_page(struct pag
ClearPageCompound(head);
- split_page_owner(head, HPAGE_PMD_ORDER);
+ split_page_owner(head, HPAGE_PMD_NR);
/* See comment in __split_huge_page_tail() */
if (PageAnon(head)) {
--- a/mm/page_owner.c~mm-page_owner-change-split_page_owner-to-take-a-count
+++ a/mm/page_owner.c
@@ -204,7 +204,7 @@ void __set_page_owner_migrate_reason(str
page_owner->last_migrate_reason = reason;
}
-void __split_page_owner(struct page *page, unsigned int order)
+void __split_page_owner(struct page *page, unsigned int nr)
{
int i;
struct page_ext *page_ext = lookup_page_ext(page);
@@ -213,7 +213,7 @@ void __split_page_owner(struct page *pag
if (unlikely(!page_ext))
return;
- for (i = 0; i < (1 << order); i++) {
+ for (i = 0; i < nr; i++) {
page_owner = get_page_owner(page_ext);
page_owner->order = 0;
page_ext = page_ext_next(page_ext);
_
Patches currently in -mm which might be from willy@infradead.org are
mm-update-the-documentation-for-vfree.patch
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2020-10-16 20:48 [merged] mm-page_owner-change-split_page_owner-to-take-a-count.patch removed from -mm tree akpm
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