522 	u64 start_pos;  in btrfs_dirty_pages()  local
528 	start_pos = pos & ~((u64) fs_info->sectorsize - 1);  in btrfs_dirty_pages()
529 	num_bytes = round_up(write_bytes + pos - start_pos,  in btrfs_dirty_pages()
532 	end_of_last_block = start_pos + num_bytes - 1;  in btrfs_dirty_pages()
538 	clear_extent_bit(&BTRFS_I(inode)->io_tree, start_pos, end_of_last_block,  in btrfs_dirty_pages()
543 		if (start_pos >= isize &&  in btrfs_dirty_pages()
553 							    start_pos,  in btrfs_dirty_pages()
560 	err = btrfs_set_extent_delalloc(inode, start_pos, end_of_last_block,  in btrfs_dirty_pages()
1478 	u64 start_pos;  in lock_and_cleanup_extent_if_need()  local
1483 	start_pos = round_down(pos, fs_info->sectorsize);  in lock_and_cleanup_extent_if_need()
1484 	last_pos = start_pos  in lock_and_cleanup_extent_if_need()
1485 		+ round_up(pos + write_bytes - start_pos,  in lock_and_cleanup_extent_if_need()
1488 	if (start_pos < inode->vfs_inode.i_size) {  in lock_and_cleanup_extent_if_need()
1491 		lock_extent_bits(&inode->io_tree, start_pos, last_pos,  in lock_and_cleanup_extent_if_need()
1493 		ordered = btrfs_lookup_ordered_range(inode, start_pos,  in lock_and_cleanup_extent_if_need()
1494 						     last_pos - start_pos + 1);  in lock_and_cleanup_extent_if_need()
1496 		    ordered->file_offset + ordered->len > start_pos &&  in lock_and_cleanup_extent_if_need()
1498 			unlock_extent_cached(&inode->io_tree, start_pos,  in lock_and_cleanup_extent_if_need()
1512 		*lockstart = start_pos;  in lock_and_cleanup_extent_if_need()
1892 	u64 start_pos;  in btrfs_file_write_iter()  local
1961 	start_pos = round_down(pos, fs_info->sectorsize);  in btrfs_file_write_iter()
1963 	if (start_pos > oldsize) {  in btrfs_file_write_iter()
1972 		if (start_pos > round_up(oldsize, fs_info->sectorsize))  in btrfs_file_write_iter()