1185 struct mem_section {  struct
1216 #define SECTIONS_PER_ROOT       (PAGE_SIZE / sizeof (struct mem_section))
1226 extern struct mem_section **mem_section;
1228 extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT];
1231 static inline unsigned long *section_to_usemap(struct mem_section *ms)  in section_to_usemap()
1236 static inline struct mem_section *__nr_to_section(unsigned long nr)  in __nr_to_section()
1239 	if (!mem_section)  in __nr_to_section()
1242 	if (!mem_section[SECTION_NR_TO_ROOT(nr)])  in __nr_to_section()
1244 	return &mem_section[SECTION_NR_TO_ROOT(nr)][nr & SECTION_ROOT_MASK];  in __nr_to_section()
1246 extern unsigned long __section_nr(struct mem_section *ms);
1270 static inline struct page *__section_mem_map_addr(struct mem_section *section)  in __section_mem_map_addr()
1277 static inline int present_section(struct mem_section *section)  in present_section()
1287 static inline int valid_section(struct mem_section *section)  in valid_section()
1292 static inline int early_section(struct mem_section *section)  in early_section()
1302 static inline int online_section(struct mem_section *section)  in online_section()
1319 static inline struct mem_section *__pfn_to_section(unsigned long pfn)  in __pfn_to_section()
1332 static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn)  in pfn_section_valid()
1339 static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn)  in pfn_section_valid()
1348 	struct mem_section *ms;  in pfn_valid()