keyring_serialise_restrict_sem 991 security/keys/keyring.c static DECLARE_RWSEM(keyring_serialise_restrict_sem); keyring_serialise_restrict_sem 1057 security/keys/keyring.c down_write(&keyring_serialise_restrict_sem); keyring_serialise_restrict_sem 1066 security/keys/keyring.c up_write(&keyring_serialise_restrict_sem);