fscrypt_context_for_new_inode
ctxsize = fscrypt_context_for_new_inode(as->fscrypt_auth->cfa_blob,
EXPORT_SYMBOL_GPL(fscrypt_context_for_new_inode);
ctxsize = fscrypt_context_for_new_inode(&ctx, inode);
int fscrypt_context_for_new_inode(void *ctx, struct inode *inode);