ECRYPTFS_AUTH_TOK_INVALID
if (!(auth_tok->flags & ECRYPTFS_AUTH_TOK_INVALID))
if (walker->flags & ECRYPTFS_AUTH_TOK_INVALID) {
walker->flags |= ECRYPTFS_AUTH_TOK_INVALID;
global_auth_tok->flags |= ECRYPTFS_AUTH_TOK_INVALID;
global_auth_tok->flags &= ~ECRYPTFS_AUTH_TOK_INVALID;