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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>
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_PAGE_OWNER_H
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#define __LINUX_PAGE_OWNER_H
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#include <linux/jump_label.h>
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#ifdef CONFIG_PAGE_OWNER
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extern struct static_key_false page_owner_inited;
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extern struct page_ext_operations page_owner_ops;
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extern void __reset_page_owner(struct page *page, unsigned int order);
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extern void __set_page_owner(struct page *page,
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unsigned int order, gfp_t gfp_mask);
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extern void __split_page_owner(struct page *page, unsigned int nr);
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extern void __copy_page_owner(struct page *oldpage, struct page *newpage);
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extern void __set_page_owner_migrate_reason(struct page *page, int reason);
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extern void __dump_page_owner(struct page *page);
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extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
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pg_data_t *pgdat, struct zone *zone);
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static inline void reset_page_owner(struct page *page, unsigned int order)
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{
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if (static_branch_unlikely(&page_owner_inited))
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__reset_page_owner(page, order);
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}
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static inline void set_page_owner(struct page *page,
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unsigned int order, gfp_t gfp_mask)
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{
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if (static_branch_unlikely(&page_owner_inited))
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__set_page_owner(page, order, gfp_mask);
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}
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static inline void split_page_owner(struct page *page, unsigned int nr)
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{
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if (static_branch_unlikely(&page_owner_inited))
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__split_page_owner(page, nr);
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}
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static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
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{
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if (static_branch_unlikely(&page_owner_inited))
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__copy_page_owner(oldpage, newpage);
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}
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static inline void set_page_owner_migrate_reason(struct page *page, int reason)
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{
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if (static_branch_unlikely(&page_owner_inited))
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__set_page_owner_migrate_reason(page, reason);
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}
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static inline void dump_page_owner(struct page *page)
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{
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if (static_branch_unlikely(&page_owner_inited))
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__dump_page_owner(page);
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}
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#else
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static inline void reset_page_owner(struct page *page, unsigned int order)
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{
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}
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static inline void set_page_owner(struct page *page,
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unsigned int order, gfp_t gfp_mask)
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{
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}
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static inline void split_page_owner(struct page *page,
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unsigned int order)
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{
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}
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static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
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{
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}
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static inline void set_page_owner_migrate_reason(struct page *page, int reason)
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{
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}
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static inline void dump_page_owner(struct page *page)
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{
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}
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#endif /* CONFIG_PAGE_OWNER */
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#endif /* __LINUX_PAGE_OWNER_H */
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