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mm/page_alloc: move set_page_refcounted() to callers of post_alloc_hook()

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In preparation for allocating frozen pages, stop initialising the page
refcount in post_alloc_hook().

Link: https://lkml.kernel.org/r/20241125210149.2976098-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-11-25 21:01:36 +00:00 committed by Andrew Morton
parent 2a5fb4098d
commit 7b9e003785
3 changed files with 5 additions and 3 deletions
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2
mm/compaction.c
View File

@ -83,6 +83,7 @@ static inline bool is_via_compact_memory(int order) { return false; }
static struct page *mark_allocated_noprof(struct page *page, unsigned int order, gfp_t gfp_flags)
{
post_alloc_hook(page, order, __GFP_MOVABLE);
set_page_refcounted(page);
return page;
}
#define mark_allocated(...) alloc_hooks(mark_allocated_noprof(__VA_ARGS__))
@ -1868,6 +1869,7 @@ static struct folio *compaction_alloc_noprof(struct folio *src, unsigned long da
dst = (struct folio *)freepage;
post_alloc_hook(&dst->page, order, __GFP_MOVABLE);
set_page_refcounted(&dst->page);
if (order)
prep_compound_page(&dst->page, order);
cc->nr_freepages -= 1 << order;

3
mm/internal.h
View File

@ -735,8 +735,7 @@ static inline void prep_compound_tail(struct page *head, int tail_idx)
extern void prep_compound_page(struct page *page, unsigned int order);
extern void post_alloc_hook(struct page *page, unsigned int order,
gfp_t gfp_flags);
void post_alloc_hook(struct page *page, unsigned int order, gfp_t gfp_flags);
extern bool free_pages_prepare(struct page *page, unsigned int order);
extern int user_min_free_kbytes;

3
mm/page_alloc.c
View File

@ -1508,7 +1508,6 @@ inline void post_alloc_hook(struct page *page, unsigned int order,
int i;
set_page_private(page, 0);
set_page_refcounted(page);
arch_alloc_page(page, order);
debug_pagealloc_map_pages(page, 1 << order);
@ -1564,6 +1563,7 @@ static void prep_new_page(struct page *page, unsigned int order, gfp_t gfp_flags
unsigned int alloc_flags)
{
post_alloc_hook(page, order, gfp_flags);
set_page_refcounted(page);
if (order && (gfp_flags & __GFP_COMP))
prep_compound_page(page, order);
@ -6360,6 +6360,7 @@ static void split_free_pages(struct list_head *list)
int i;
post_alloc_hook(page, order, __GFP_MOVABLE);
set_page_refcounted(page);
if (!order)
continue;