320 	if (!file->f_op->fallocate)  in vfs_fallocate()
324 	ret = file->f_op->fallocate(file, mode, offset, len);  in vfs_fallocate()
888 		f->f_op = &empty_fops;  in do_dentry_open()
910 	f->f_op = fops_get(inode->i_fop);  in do_dentry_open()
911 	if (WARN_ON(!f->f_op)) {  in do_dentry_open()
927 		open = f->f_op->open;  in do_dentry_open()
935 	     likely(f->f_op->read || f->f_op->read_iter))  in do_dentry_open()
938 	     likely(f->f_op->write || f->f_op->write_iter))  in do_dentry_open()
940 	if ((f->f_mode & FMODE_LSEEK) && !f->f_op->llseek)  in do_dentry_open()
991 	fops_put(f->f_op);  in do_dentry_open()
1526 			filp->f_op)) {  in filp_flush()
1530 	if (filp->f_op->flush)  in filp_flush()
1531 		retval = filp->f_op->flush(filp, id);  in filp_flush()