210 	struct bitmap_storage *store = &bitmap->storage;  in write_sb_page()  local
220 		if (page->index == store->file_pages-1) {  in write_sb_page()
221 			int last_page_size = store->bytes & (PAGE_SIZE-1);  in write_sb_page()
741 static inline unsigned long file_page_index(struct bitmap_storage *store,  in file_page_index()  argument
744 	if (store->sb_page)  in file_page_index()
750 static inline unsigned long file_page_offset(struct bitmap_storage *store,  in file_page_offset()  argument
753 	if (store->sb_page)  in file_page_offset()
762 static inline struct page *filemap_get_page(struct bitmap_storage *store,  in filemap_get_page()  argument
765 	if (file_page_index(store, chunk) >= store->file_pages)  in filemap_get_page()
767 	return store->filemap[file_page_index(store, chunk)];  in filemap_get_page()
770 static int md_bitmap_storage_alloc(struct bitmap_storage *store,  in md_bitmap_storage_alloc()  argument
785 	store->filemap = kmalloc_array(num_pages, sizeof(struct page *),  in md_bitmap_storage_alloc()
787 	if (!store->filemap)  in md_bitmap_storage_alloc()
790 	if (with_super && !store->sb_page) {  in md_bitmap_storage_alloc()
791 		store->sb_page = alloc_page(GFP_KERNEL|__GFP_ZERO);  in md_bitmap_storage_alloc()
792 		if (store->sb_page == NULL)  in md_bitmap_storage_alloc()
797 	if (store->sb_page) {  in md_bitmap_storage_alloc()
798 		store->filemap[0] = store->sb_page;  in md_bitmap_storage_alloc()
800 		store->sb_page->index = offset;  in md_bitmap_storage_alloc()
804 		store->filemap[pnum] = alloc_page(GFP_KERNEL|__GFP_ZERO);  in md_bitmap_storage_alloc()
805 		if (!store->filemap[pnum]) {  in md_bitmap_storage_alloc()
806 			store->file_pages = pnum;  in md_bitmap_storage_alloc()
809 		store->filemap[pnum]->index = pnum + offset;  in md_bitmap_storage_alloc()
811 	store->file_pages = pnum;  in md_bitmap_storage_alloc()
815 	store->filemap_attr = kzalloc(  in md_bitmap_storage_alloc()
818 	if (!store->filemap_attr)  in md_bitmap_storage_alloc()
821 	store->bytes = bytes;  in md_bitmap_storage_alloc()
826 static void md_bitmap_file_unmap(struct bitmap_storage *store)  in md_bitmap_file_unmap()  argument
832 	file = store->file;  in md_bitmap_file_unmap()
833 	map = store->filemap;  in md_bitmap_file_unmap()
834 	pages = store->file_pages;  in md_bitmap_file_unmap()
835 	sb_page = store->sb_page;  in md_bitmap_file_unmap()
841 	kfree(store->filemap_attr);  in md_bitmap_file_unmap()
925 	struct bitmap_storage *store = &bitmap->storage;  in md_bitmap_file_set_bit()  local
929 		node_offset = bitmap->cluster_slot * store->file_pages;  in md_bitmap_file_set_bit()
954 	struct bitmap_storage *store = &bitmap->storage;  in md_bitmap_file_clear_bit()  local
958 		node_offset = bitmap->cluster_slot * store->file_pages;  in md_bitmap_file_clear_bit()
1059 	struct bitmap_storage *store = &bitmap->storage;  in md_bitmap_init_from_disk()  local
1062 	file = store->file;  in md_bitmap_init_from_disk()
1066 		store->filemap = NULL;  in md_bitmap_init_from_disk()
1067 		store->file_pages = 0;  in md_bitmap_init_from_disk()
1083 	if (file && i_size_read(file->f_mapping->host) < store->bytes) {  in md_bitmap_init_from_disk()
1087 			store->bytes);  in md_bitmap_init_from_disk()
1097 		node_offset = bitmap->cluster_slot * (DIV_ROUND_UP(store->bytes, PAGE_SIZE));  in md_bitmap_init_from_disk()
1106 			if (index == store->file_pages-1)  in md_bitmap_init_from_disk()
1107 				count = store->bytes - index * PAGE_SIZE;  in md_bitmap_init_from_disk()
1110 			page = store->filemap[index];  in md_bitmap_init_from_disk()
1162 		 bmname(bitmap), store->file_pages,  in md_bitmap_init_from_disk()
2069 	struct bitmap_storage store;  in md_bitmap_resize()  local
2116 	memset(&store, 0, sizeof(store));  in md_bitmap_resize()
2118 		ret = md_bitmap_storage_alloc(&store, chunks,  in md_bitmap_resize()
2123 		md_bitmap_file_unmap(&store);  in md_bitmap_resize()
2132 		md_bitmap_file_unmap(&store);  in md_bitmap_resize()
2139 	store.file = bitmap->storage.file;  in md_bitmap_resize()
2142 	if (store.sb_page && bitmap->storage.sb_page)  in md_bitmap_resize()
2143 		memcpy(page_address(store.sb_page),  in md_bitmap_resize()
2148 	bitmap->storage = store;  in md_bitmap_resize()