1790 	u64 page_start;  in btrfs_page_mkwrite()  local
1799 	page_start = folio_pos(folio);  in btrfs_page_mkwrite()
1800 	page_end = page_start + folio_size(folio) - 1;  in btrfs_page_mkwrite()
1812 					    page_start, reserved_space);  in btrfs_page_mkwrite()
1832 	    (page_start >= size)) {  in btrfs_page_mkwrite()
1838 	lock_extent(io_tree, page_start, page_end, &cached_state);  in btrfs_page_mkwrite()
1842 		unlock_extent(io_tree, page_start, page_end, &cached_state);  in btrfs_page_mkwrite()
1850 	ordered = btrfs_lookup_ordered_range(BTRFS_I(inode), page_start, PAGE_SIZE);  in btrfs_page_mkwrite()
1852 		unlock_extent(io_tree, page_start, page_end, &cached_state);  in btrfs_page_mkwrite()
1861 		reserved_space = round_up(size - page_start, fs_info->sectorsize);  in btrfs_page_mkwrite()
1863 			end = page_start + reserved_space - 1;  in btrfs_page_mkwrite()
1865 					data_reserved, page_start,  in btrfs_page_mkwrite()
1877 	clear_extent_bit(&BTRFS_I(inode)->io_tree, page_start, end,  in btrfs_page_mkwrite()
1881 	ret2 = btrfs_set_extent_delalloc(BTRFS_I(inode), page_start, end, 0,  in btrfs_page_mkwrite()
1884 		unlock_extent(io_tree, page_start, page_end, &cached_state);  in btrfs_page_mkwrite()
1890 	if (page_start + folio_size(folio) > size)  in btrfs_page_mkwrite()
1898 	btrfs_folio_clear_checked(fs_info, folio, page_start, PAGE_SIZE);  in btrfs_page_mkwrite()
1899 	btrfs_folio_set_dirty(fs_info, folio, page_start, end + 1 - page_start);  in btrfs_page_mkwrite()
1900 	btrfs_folio_set_uptodate(fs_info, folio, page_start, end + 1 - page_start);  in btrfs_page_mkwrite()
1904 	unlock_extent(io_tree, page_start, page_end, &cached_state);  in btrfs_page_mkwrite()
1917 	btrfs_delalloc_release_space(BTRFS_I(inode), data_reserved, page_start,  in btrfs_page_mkwrite()