nfsrv_hashfh
uint32_t nfsrv_hashfh(fhandle_t *);
(&NFSD_VNET(nfslockhash)[nfsrv_hashfh(f) % nfsrv_lockhashsize])
(&nfslayouthash[nfsrv_hashfh(f) % nfsrv_layouthashsize])