471 	u64 start_pos;  in btrfs_dirty_pages()  local
483 	start_pos = round_down(pos, fs_info->sectorsize);  in btrfs_dirty_pages()
484 	num_bytes = round_up(write_bytes + pos - start_pos,  in btrfs_dirty_pages()
488 	end_of_last_block = start_pos + num_bytes - 1;  in btrfs_dirty_pages()
494 	clear_extent_bit(&inode->io_tree, start_pos, end_of_last_block,  in btrfs_dirty_pages()
498 	err = btrfs_set_extent_delalloc(inode, start_pos, end_of_last_block,  in btrfs_dirty_pages()
506 		btrfs_page_clamp_set_uptodate(fs_info, p, start_pos, num_bytes);  in btrfs_dirty_pages()
508 		btrfs_page_clamp_set_dirty(fs_info, p, start_pos, num_bytes);  in btrfs_dirty_pages()
1447 	u64 start_pos;  in lock_and_cleanup_extent_if_need()  local
1452 	start_pos = round_down(pos, fs_info->sectorsize);  in lock_and_cleanup_extent_if_need()
1455 	if (start_pos < inode->vfs_inode.i_size) {  in lock_and_cleanup_extent_if_need()
1458 		lock_extent_bits(&inode->io_tree, start_pos, last_pos,  in lock_and_cleanup_extent_if_need()
1460 		ordered = btrfs_lookup_ordered_range(inode, start_pos,  in lock_and_cleanup_extent_if_need()
1461 						     last_pos - start_pos + 1);  in lock_and_cleanup_extent_if_need()
1463 		    ordered->file_offset + ordered->num_bytes > start_pos &&  in lock_and_cleanup_extent_if_need()
1465 			unlock_extent_cached(&inode->io_tree, start_pos,  in lock_and_cleanup_extent_if_need()
1478 		*lockstart = start_pos;  in lock_and_cleanup_extent_if_need()
1610 	loff_t start_pos;  in btrfs_write_check()  local
1640 	start_pos = round_down(pos, fs_info->sectorsize);  in btrfs_write_check()
1642 	if (start_pos > oldsize) {  in btrfs_write_check()