100 bool shmem_mapping(struct address_space *mapping);
102 static inline bool shmem_mapping(struct address_space *mapping)  in shmem_mapping()  argument
107 extern void shmem_unlock_mapping(struct address_space *mapping);
108 extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
134 extern unsigned long shmem_partial_swap_usage(struct address_space *mapping,
148 struct folio *shmem_read_folio_gfp(struct address_space *mapping,
151 static inline struct folio *shmem_read_folio(struct address_space *mapping,  in shmem_read_folio()  argument
154 	return shmem_read_folio_gfp(mapping, index, mapping_gfp_mask(mapping));  in shmem_read_folio()
158 				struct address_space *mapping, pgoff_t index)  in shmem_read_mapping_page()  argument
160 	return shmem_read_mapping_page_gfp(mapping, index,  in shmem_read_mapping_page()
161 					mapping_gfp_mask(mapping));  in shmem_read_mapping_page()