xfs_free_file_space
error = xfs_free_file_space(ip, offset, len, ac);
int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
error = xfs_free_file_space(ip, offset, len, ac);
error = xfs_free_file_space(ip, offset, len, ac);
DEFINE_INODE_EVENT(xfs_free_file_space);