52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
#ifndef __LINUX_PAGE_OWNER_H
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#define __LINUX_PAGE_OWNER_H
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#ifdef CONFIG_PAGE_OWNER
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extern bool 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 gfp_t __get_page_owner_gfp(struct page *page);
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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 (likely(!page_owner_inited))
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return;
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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 (likely(!page_owner_inited))
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return;
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__set_page_owner(page, order, gfp_mask);
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}
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static inline gfp_t get_page_owner_gfp(struct page *page)
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{
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if (likely(!page_owner_inited))
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return 0;
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return __get_page_owner_gfp(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 gfp_t get_page_owner_gfp(struct page *page)
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{
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return 0;
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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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