589 			   struct buffer_head *map_bh)  in get_more_blocks()  argument
610 		map_bh->b_state = 0;  in get_more_blocks()
611 		map_bh->b_size = fs_count << i_blkbits;  in get_more_blocks()
632 						map_bh, create);  in get_more_blocks()
635 		dio->private = map_bh->b_private;  in get_more_blocks()
637 		if (ret == 0 && buffer_defer_completion(map_bh))  in get_more_blocks()
647 		sector_t start_sector, struct buffer_head *map_bh)  in dio_new_bio()  argument
656 	nr_pages = min(sdio->pages_in_io, bio_get_nr_vecs(map_bh->b_bdev));  in dio_new_bio()
658 	dio_bio_alloc(dio, sdio, map_bh->b_bdev, sector, nr_pages);  in dio_new_bio()
704 		struct buffer_head *map_bh)  in dio_send_cur_page()  argument
733 		ret = dio_new_bio(dio, sdio, sdio->cur_page_block, map_bh);  in dio_send_cur_page()
740 		ret = dio_new_bio(dio, sdio, sdio->cur_page_block, map_bh);  in dio_send_cur_page()
770 		    struct buffer_head *map_bh)  in submit_page_section()  argument
796 		ret = dio_send_cur_page(dio, sdio, map_bh);  in submit_page_section()
815 		ret = dio_send_cur_page(dio, sdio, map_bh);  in submit_page_section()
828 static void clean_blockdev_aliases(struct dio *dio, struct buffer_head *map_bh)  in clean_blockdev_aliases()  argument
833 	nblocks = map_bh->b_size >> dio->inode->i_blkbits;  in clean_blockdev_aliases()
836 		unmap_underlying_metadata(map_bh->b_bdev,  in clean_blockdev_aliases()
837 					  map_bh->b_blocknr + i);  in clean_blockdev_aliases()
851 		int end, struct buffer_head *map_bh)  in dio_zero_block()  argument
859 	if (!sdio->blkfactor || !buffer_new(map_bh))  in dio_zero_block()
879 				sdio->next_block_for_io, map_bh))  in dio_zero_block()
902 			struct buffer_head *map_bh)  in do_direct_IO()  argument
932 				ret = get_more_blocks(dio, sdio, map_bh);  in do_direct_IO()
937 				if (!buffer_mapped(map_bh))  in do_direct_IO()
941 						map_bh->b_size >> sdio->blkbits;  in do_direct_IO()
943 					map_bh->b_blocknr << sdio->blkfactor;  in do_direct_IO()
944 				if (buffer_new(map_bh))  in do_direct_IO()
945 					clean_blockdev_aliases(dio, map_bh);  in do_direct_IO()
964 				if (!buffer_new(map_bh))  in do_direct_IO()
970 			if (!buffer_mapped(map_bh)) {  in do_direct_IO()
1004 				dio_zero_block(dio, sdio, 0, map_bh);  in do_direct_IO()
1021 				sdio->boundary = buffer_boundary(map_bh);  in do_direct_IO()
1026 						  map_bh);  in do_direct_IO()
1111 	struct buffer_head map_bh = { 0, };  in do_blockdev_direct_IO()  local
1244 	retval = do_direct_IO(dio, &sdio, &map_bh);  in do_blockdev_direct_IO()
1259 	dio_zero_block(dio, &sdio, 1, &map_bh);  in do_blockdev_direct_IO()
1264 		ret2 = dio_send_cur_page(dio, &sdio, &map_bh);  in do_blockdev_direct_IO()