diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-10-16 06:05:29 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 21:11:15 +0300 |
| commit | 8fb156c9ee2db94f7127c930c89917634a1a9f56 (patch) | |
| tree | b02badb7e12ebf85d4f6239ed0d6f02ee89da7df /mm | |
| parent | d01ac3c35214ce362f50cada37cb7bab8c801896 (diff) | |
| download | linux-8fb156c9ee2db94f7127c930c89917634a1a9f56.tar.xz | |
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.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: SeongJae Park <sjpark@amazon.de>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Link: https://lkml.kernel.org/r/20200908195539.25896-4-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/huge_memory.c | 2 | ||||
| -rw-r--r-- | mm/page_alloc.c | 2 | ||||
| -rw-r--r-- | mm/page_owner.c | 4 |
3 files changed, 4 insertions, 4 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 65c289c13b58..aa612cc5b3fe 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2454,7 +2454,7 @@ static void __split_huge_page(struct page *page, struct list_head *list, 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)) { diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 05fe1ddb033c..febb2d731f9e 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3209,7 +3209,7 @@ void split_page(struct page *page, unsigned int order) for (i = 1; i < (1 << order); i++) set_page_refcounted(page + i); - split_page_owner(page, order); + split_page_owner(page, 1 << order); } EXPORT_SYMBOL_GPL(split_page); diff --git a/mm/page_owner.c b/mm/page_owner.c index 360461509423..4ca3051a1035 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -204,7 +204,7 @@ void __set_page_owner_migrate_reason(struct page *page, int reason) 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 *page, unsigned int order) 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); |