1746 	size_t iosize;  in btrfs_do_readpage()  local
1762 			iosize = PAGE_SIZE - zero_offset;  in btrfs_do_readpage()
1763 			memzero_page(page, zero_offset, iosize);  in btrfs_do_readpage()
1777 			iosize = PAGE_SIZE - pg_offset;  in btrfs_do_readpage()
1778 			memzero_page(page, pg_offset, iosize);  in btrfs_do_readpage()
1779 			set_extent_uptodate(tree, cur, cur + iosize - 1,  in btrfs_do_readpage()
1781 			unlock_extent(tree, cur, cur + iosize - 1, &cached);  in btrfs_do_readpage()
1782 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
1800 		iosize = min(extent_map_end(em) - cur, end - cur + 1);  in btrfs_do_readpage()
1801 		iosize = ALIGN(iosize, blocksize);  in btrfs_do_readpage()
1859 			memzero_page(page, pg_offset, iosize);  in btrfs_do_readpage()
1861 			set_extent_uptodate(tree, cur, cur + iosize - 1,  in btrfs_do_readpage()
1863 			unlock_extent(tree, cur, cur + iosize - 1, &cached);  in btrfs_do_readpage()
1864 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
1865 			cur = cur + iosize;  in btrfs_do_readpage()
1866 			pg_offset += iosize;  in btrfs_do_readpage()
1871 			unlock_extent(tree, cur, cur + iosize - 1, NULL);  in btrfs_do_readpage()
1872 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
1873 			cur = cur + iosize;  in btrfs_do_readpage()
1874 			pg_offset += iosize;  in btrfs_do_readpage()
1879 					 bio_ctrl, disk_bytenr, page, iosize,  in btrfs_do_readpage()
1891 		cur = cur + iosize;  in btrfs_do_readpage()
1892 		pg_offset += iosize;  in btrfs_do_readpage()
2106 		u32 iosize;  in __extent_writepage_io()  local
2154 		iosize = min(min(em_end, end + 1), dirty_range_end) - cur;  in __extent_writepage_io()
2172 						page, cur, cur + iosize - 1, true);  in __extent_writepage_io()
2173 			btrfs_page_clear_dirty(fs_info, page, cur, iosize);  in __extent_writepage_io()
2174 			cur += iosize;  in __extent_writepage_io()
2178 		btrfs_set_range_writeback(inode, cur, cur + iosize - 1);  in __extent_writepage_io()
2191 		btrfs_page_clear_dirty(fs_info, page, cur, iosize);  in __extent_writepage_io()
2195 					 page, iosize,  in __extent_writepage_io()
2203 			btrfs_page_set_error(fs_info, page, cur, iosize);  in __extent_writepage_io()
2206 							   iosize);  in __extent_writepage_io()
2209 		cur += iosize;  in __extent_writepage_io()