621 			   struct buffer_head *map_bh)  in get_more_blocks()  argument
644 		map_bh->b_state = 0;  in get_more_blocks()
645 		map_bh->b_size = fs_count << i_blkbits;  in get_more_blocks()
666 						map_bh, create);  in get_more_blocks()
669 		dio->private = map_bh->b_private;  in get_more_blocks()
671 		if (ret == 0 && buffer_defer_completion(map_bh))  in get_more_blocks()
681 		sector_t start_sector, struct buffer_head *map_bh)  in dio_new_bio()  argument
692 	dio_bio_alloc(dio, sdio, map_bh->b_bdev, sector, nr_pages);  in dio_new_bio()
738 		struct buffer_head *map_bh)  in dio_send_cur_page()  argument
767 		ret = dio_new_bio(dio, sdio, sdio->cur_page_block, map_bh);  in dio_send_cur_page()
774 		ret = dio_new_bio(dio, sdio, sdio->cur_page_block, map_bh);  in dio_send_cur_page()
804 		    struct buffer_head *map_bh)  in submit_page_section()  argument
832 		ret = dio_send_cur_page(dio, sdio, map_bh);  in submit_page_section()
851 		ret = dio_send_cur_page(dio, sdio, map_bh);  in submit_page_section()
870 		int end, struct buffer_head *map_bh)  in dio_zero_block()  argument
878 	if (!sdio->blkfactor || !buffer_new(map_bh))  in dio_zero_block()
898 				sdio->next_block_for_io, map_bh))  in dio_zero_block()
921 			struct buffer_head *map_bh)  in do_direct_IO()  argument
953 				ret = get_more_blocks(dio, sdio, map_bh);  in do_direct_IO()
958 				if (!buffer_mapped(map_bh))  in do_direct_IO()
962 						map_bh->b_size >> blkbits;  in do_direct_IO()
964 					map_bh->b_blocknr << sdio->blkfactor;  in do_direct_IO()
965 				if (buffer_new(map_bh)) {  in do_direct_IO()
967 						map_bh->b_bdev,  in do_direct_IO()
968 						map_bh->b_blocknr,  in do_direct_IO()
969 						map_bh->b_size >> i_blkbits);  in do_direct_IO()
989 				if (!buffer_new(map_bh))  in do_direct_IO()
995 			if (!buffer_mapped(map_bh)) {  in do_direct_IO()
1029 				dio_zero_block(dio, sdio, 0, map_bh);  in do_direct_IO()
1046 				sdio->boundary = buffer_boundary(map_bh);  in do_direct_IO()
1051 						  map_bh);  in do_direct_IO()
1136 	struct buffer_head map_bh = { 0, };  in __blockdev_direct_IO()  local
1266 	retval = do_direct_IO(dio, &sdio, &map_bh);  in __blockdev_direct_IO()
1281 	dio_zero_block(dio, &sdio, 1, &map_bh);  in __blockdev_direct_IO()
1286 		ret2 = dio_send_cur_page(dio, &sdio, &map_bh);  in __blockdev_direct_IO()