multiple fir 16 module usage on f28027 Piccolo

Hi everyone. I'm using fir16 module on sprc082 library downloaded from this site. I don't understand if I have to create, in order to filter with the same coefficients two differents variables, two different memory sectors for these variables. More specifically, could  I create a memory section for any of FIR16 type variables and so for relative delay buffers? The only well-working solution I've found is the following:

FIR16 lpf=FIR16_DEFAULTS;   
FIR16 lpf1=FIR16_DEFAULTS;
#pragma DATA_SECTION(fir,"firfilt");
FIR16 fir=FIR16_DEFAULTS;
#pragma DATA_SECTION(dbuffer,"firldb");
long dbuffer[(FIR_ORDER+2)/2];
#pragma DATA_SECTION(dbuffer1,"firldb1");
long dbuffer1[(FIR_ORDER+2)/2];
const long coeff[(FIR_ORDER+2)/2]=FIR16_LPF50_CUSTOM;

void filterInit()
{

   lpf.dbuffer_ptr=dbuffer;
   lpf.coeff_ptr=(long*)coeff;  //same coefficients for both variables
   lpf.order=FIR_ORDER;
   lpf.init(&lpf);

   lpf1.dbuffer_ptr=dbuffer1;
   lpf1.coeff_ptr=(long*)coeff; //same coefficients for both variables
   lpf1.order=FIR_ORDER;
   lpf1.init(&lpf1);

}

If this solution is correct, what is the role of the variable fir? Thank you!