empty_fops        740 fs/open.c      	static const struct file_operations empty_fops = {};
empty_fops        752 fs/open.c      		f->f_op = &empty_fops;
empty_fops         65 fs/ubifs/xattr.c static const struct file_operations empty_fops;
empty_fops        122 fs/ubifs/xattr.c 	inode->i_fop = &empty_fops;