212 	struct bitmap_storage *store = &bitmap->storage;  in write_sb_page()  local
216 		node_offset = bitmap->cluster_slot * store->file_pages;  in write_sb_page()
224 		if (page->index == store->file_pages-1) {  in write_sb_page()
225 			int last_page_size = store->bytes & (PAGE_SIZE-1);  in write_sb_page()
723 static inline unsigned long file_page_index(struct bitmap_storage *store,  in file_page_index()  argument
726 	if (store->sb_page)  in file_page_index()
732 static inline unsigned long file_page_offset(struct bitmap_storage *store,  in file_page_offset()  argument
735 	if (store->sb_page)  in file_page_offset()
744 static inline struct page *filemap_get_page(struct bitmap_storage *store,  in filemap_get_page()  argument
747 	if (file_page_index(store, chunk) >= store->file_pages)  in filemap_get_page()
749 	return store->filemap[file_page_index(store, chunk)];  in filemap_get_page()
752 static int bitmap_storage_alloc(struct bitmap_storage *store,  in bitmap_storage_alloc()  argument
767 	store->filemap = kmalloc(sizeof(struct page *)  in bitmap_storage_alloc()
769 	if (!store->filemap)  in bitmap_storage_alloc()
772 	if (with_super && !store->sb_page) {  in bitmap_storage_alloc()
773 		store->sb_page = alloc_page(GFP_KERNEL|__GFP_ZERO);  in bitmap_storage_alloc()
774 		if (store->sb_page == NULL)  in bitmap_storage_alloc()
779 	if (store->sb_page) {  in bitmap_storage_alloc()
780 		store->filemap[0] = store->sb_page;  in bitmap_storage_alloc()
782 		store->sb_page->index = offset;  in bitmap_storage_alloc()
786 		store->filemap[pnum] = alloc_page(GFP_KERNEL|__GFP_ZERO);  in bitmap_storage_alloc()
787 		if (!store->filemap[pnum]) {  in bitmap_storage_alloc()
788 			store->file_pages = pnum;  in bitmap_storage_alloc()
791 		store->filemap[pnum]->index = pnum + offset;  in bitmap_storage_alloc()
793 	store->file_pages = pnum;  in bitmap_storage_alloc()
797 	store->filemap_attr = kzalloc(  in bitmap_storage_alloc()
800 	if (!store->filemap_attr)  in bitmap_storage_alloc()
803 	store->bytes = bytes;  in bitmap_storage_alloc()
808 static void bitmap_file_unmap(struct bitmap_storage *store)  in bitmap_file_unmap()  argument
814 	file = store->file;  in bitmap_file_unmap()
815 	map = store->filemap;  in bitmap_file_unmap()
816 	pages = store->file_pages;  in bitmap_file_unmap()
817 	sb_page = store->sb_page;  in bitmap_file_unmap()
823 	kfree(store->filemap_attr);  in bitmap_file_unmap()
1030 	struct bitmap_storage *store = &bitmap->storage;  in bitmap_init_from_disk()  local
1033 	file = store->file;  in bitmap_init_from_disk()
1037 		store->filemap = NULL;  in bitmap_init_from_disk()
1038 		store->file_pages = 0;  in bitmap_init_from_disk()
1055 	if (file && i_size_read(file->f_mapping->host) < store->bytes) {  in bitmap_init_from_disk()
1059 		       store->bytes);  in bitmap_init_from_disk()
1069 		node_offset = bitmap->cluster_slot * (DIV_ROUND_UP(store->bytes, PAGE_SIZE));  in bitmap_init_from_disk()
1078 			if (index == store->file_pages-1)  in bitmap_init_from_disk()
1079 				count = store->bytes - index * PAGE_SIZE;  in bitmap_init_from_disk()
1082 			page = store->filemap[index];  in bitmap_init_from_disk()
1135 	       bmname(bitmap), store->file_pages,  in bitmap_init_from_disk()
1953 	struct bitmap_storage store;  in bitmap_resize()  local
1999 	memset(&store, 0, sizeof(store));  in bitmap_resize()
2001 		ret = bitmap_storage_alloc(&store, chunks,  in bitmap_resize()
2013 		bitmap_file_unmap(&store);  in bitmap_resize()
2020 	store.file = bitmap->storage.file;  in bitmap_resize()
2023 	if (store.sb_page && bitmap->storage.sb_page)  in bitmap_resize()
2024 		memcpy(page_address(store.sb_page),  in bitmap_resize()
2028 	bitmap->storage = store;  in bitmap_resize()