3566 	size_t iosize;  in btrfs_do_readpage()  local
3591 			iosize = PAGE_SIZE - zero_offset;  in btrfs_do_readpage()
3592 			memzero_page(page, zero_offset, iosize);  in btrfs_do_readpage()
3605 			iosize = PAGE_SIZE - pg_offset;  in btrfs_do_readpage()
3606 			memzero_page(page, pg_offset, iosize);  in btrfs_do_readpage()
3608 			set_extent_uptodate(tree, cur, cur + iosize - 1,  in btrfs_do_readpage()
3611 					     cur + iosize - 1, &cached);  in btrfs_do_readpage()
3612 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
3632 		iosize = min(extent_map_end(em) - cur, end - cur + 1);  in btrfs_do_readpage()
3634 		iosize = ALIGN(iosize, blocksize);  in btrfs_do_readpage()
3692 			memzero_page(page, pg_offset, iosize);  in btrfs_do_readpage()
3695 			set_extent_uptodate(tree, cur, cur + iosize - 1,  in btrfs_do_readpage()
3698 					     cur + iosize - 1, &cached);  in btrfs_do_readpage()
3699 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
3700 			cur = cur + iosize;  in btrfs_do_readpage()
3701 			pg_offset += iosize;  in btrfs_do_readpage()
3707 			unlock_extent(tree, cur, cur + iosize - 1);  in btrfs_do_readpage()
3708 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
3709 			cur = cur + iosize;  in btrfs_do_readpage()
3710 			pg_offset += iosize;  in btrfs_do_readpage()
3717 			unlock_extent(tree, cur, cur + iosize - 1);  in btrfs_do_readpage()
3718 			end_page_read(page, false, cur, iosize);  in btrfs_do_readpage()
3719 			cur = cur + iosize;  in btrfs_do_readpage()
3720 			pg_offset += iosize;  in btrfs_do_readpage()
3725 					 bio_ctrl, page, disk_bytenr, iosize,  in btrfs_do_readpage()
3733 			unlock_extent(tree, cur, cur + iosize - 1);  in btrfs_do_readpage()
3734 			end_page_read(page, false, cur, iosize);  in btrfs_do_readpage()
3737 		cur = cur + iosize;  in btrfs_do_readpage()
3738 		pg_offset += iosize;  in btrfs_do_readpage()
3934 		u32 iosize;  in __extent_writepage_io()  local
3979 		iosize = min(min(em_end, end + 1), dirty_range_end) - cur;  in __extent_writepage_io()
3997 						page, cur, cur + iosize - 1, true);  in __extent_writepage_io()
3998 			btrfs_page_clear_dirty(fs_info, page, cur, iosize);  in __extent_writepage_io()
3999 			cur += iosize;  in __extent_writepage_io()
4003 		btrfs_set_range_writeback(inode, cur, cur + iosize - 1);  in __extent_writepage_io()
4016 		btrfs_page_clear_dirty(fs_info, page, cur, iosize);  in __extent_writepage_io()
4020 					 disk_bytenr, iosize,  in __extent_writepage_io()
4025 			btrfs_page_set_error(fs_info, page, cur, iosize);  in __extent_writepage_io()
4028 							   iosize);  in __extent_writepage_io()
4031 		cur += iosize;  in __extent_writepage_io()