3870 static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg, int bCommit){  in incrVacuumStep()  argument
3875   assert( iLastPg>nFin );  in incrVacuumStep()
3877   if( !PTRMAP_ISPAGE(pBt, iLastPg) && iLastPg!=PENDING_BYTE_PAGE(pBt) ){  in incrVacuumStep()
3886     rc = ptrmapGet(pBt, iLastPg, &eType, &iPtrPage);  in incrVacuumStep()
3903         rc = allocateBtreePage(pBt, &pFreePg, &iFreePg, iLastPg, BTALLOC_EXACT);  in incrVacuumStep()
3907         assert( iFreePg==iLastPg );  in incrVacuumStep()
3916       rc = btreeGetPage(pBt, iLastPg, &pLastPg, 0);  in incrVacuumStep()
3946       assert( iFreePg<iLastPg );  in incrVacuumStep()
3958       iLastPg--;  in incrVacuumStep()
3959     }while( iLastPg==PENDING_BYTE_PAGE(pBt) || PTRMAP_ISPAGE(pBt, iLastPg) );  in incrVacuumStep()
3961     pBt->nPage = iLastPg;  in incrVacuumStep()