RPC_CREDCACHE_HASHBITS   64 include/linux/sunrpc/auth.h #define RPC_CREDCACHE_NR	(1 << RPC_CREDCACHE_HASHBITS)
RPC_CREDCACHE_HASHBITS  294 net/sunrpc/auth.c 	nr = hash_long(acred->uid, RPC_CREDCACHE_HASHBITS);