599 			   struct buffer_head *map_bh)  in get_more_blocks()  argument
620 		map_bh->b_state = 0;  in get_more_blocks()
621 		map_bh->b_size = fs_count << i_blkbits;  in get_more_blocks()
642 						map_bh, create);  in get_more_blocks()
645 		dio->private = map_bh->b_private;  in get_more_blocks()
647 		if (ret == 0 && buffer_defer_completion(map_bh))  in get_more_blocks()
657 		sector_t start_sector, struct buffer_head *map_bh)  in dio_new_bio()  argument
668 	dio_bio_alloc(dio, sdio, map_bh->b_bdev, sector, nr_pages);  in dio_new_bio()
714 		struct buffer_head *map_bh)  in dio_send_cur_page()  argument
743 		ret = dio_new_bio(dio, sdio, sdio->cur_page_block, map_bh);  in dio_send_cur_page()
750 		ret = dio_new_bio(dio, sdio, sdio->cur_page_block, map_bh);  in dio_send_cur_page()
780 		    struct buffer_head *map_bh)  in submit_page_section()  argument
806 		ret = dio_send_cur_page(dio, sdio, map_bh);  in submit_page_section()
825 		ret = dio_send_cur_page(dio, sdio, map_bh);  in submit_page_section()
838 static void clean_blockdev_aliases(struct dio *dio, struct buffer_head *map_bh)  in clean_blockdev_aliases()  argument
843 	nblocks = map_bh->b_size >> dio->inode->i_blkbits;  in clean_blockdev_aliases()
846 		unmap_underlying_metadata(map_bh->b_bdev,  in clean_blockdev_aliases()
847 					  map_bh->b_blocknr + i);  in clean_blockdev_aliases()
861 		int end, struct buffer_head *map_bh)  in dio_zero_block()  argument
869 	if (!sdio->blkfactor || !buffer_new(map_bh))  in dio_zero_block()
889 				sdio->next_block_for_io, map_bh))  in dio_zero_block()
912 			struct buffer_head *map_bh)  in do_direct_IO()  argument
942 				ret = get_more_blocks(dio, sdio, map_bh);  in do_direct_IO()
947 				if (!buffer_mapped(map_bh))  in do_direct_IO()
951 						map_bh->b_size >> sdio->blkbits;  in do_direct_IO()
953 					map_bh->b_blocknr << sdio->blkfactor;  in do_direct_IO()
954 				if (buffer_new(map_bh))  in do_direct_IO()
955 					clean_blockdev_aliases(dio, map_bh);  in do_direct_IO()
974 				if (!buffer_new(map_bh))  in do_direct_IO()
980 			if (!buffer_mapped(map_bh)) {  in do_direct_IO()
1014 				dio_zero_block(dio, sdio, 0, map_bh);  in do_direct_IO()
1031 				sdio->boundary = buffer_boundary(map_bh);  in do_direct_IO()
1036 						  map_bh);  in do_direct_IO()
1121 	struct buffer_head map_bh = { 0, };  in do_blockdev_direct_IO()  local
1255 	retval = do_direct_IO(dio, &sdio, &map_bh);  in do_blockdev_direct_IO()
1270 	dio_zero_block(dio, &sdio, 1, &map_bh);  in do_blockdev_direct_IO()
1275 		ret2 = dio_send_cur_page(dio, &sdio, &map_bh);  in do_blockdev_direct_IO()