39 	return file->f_op->fop_flags & FOP_UNSIGNED_OFFSET;  in unsigned_offsets()
387 	return file->f_op->llseek(file, offset, whence);  in vfs_llseek()
489 	ret = filp->f_op->read_iter(&kiocb, &iter);  in new_sync_read()
522 	if (unlikely(!file->f_op->read_iter || file->f_op->read))  in __kernel_read()
528 	ret = file->f_op->read_iter(&kiocb, &iter);  in __kernel_read()
567 	if (file->f_op->read)  in vfs_read()
568 		ret = file->f_op->read(file, buf, count, pos);  in vfs_read()
569 	else if (file->f_op->read_iter)  in vfs_read()
591 	ret = filp->f_op->write_iter(&kiocb, &iter);  in new_sync_write()
612 	if (unlikely(!file->f_op->write_iter || file->f_op->write))  in __kernel_write_iter()
617 	ret = file->f_op->write_iter(&kiocb, from);  in __kernel_write_iter()
681 	if (file->f_op->write)  in vfs_write()
682 		ret = file->f_op->write(file, buf, count, pos);  in vfs_write()
683 	else if (file->f_op->write_iter)  in vfs_write()
823 		ret = filp->f_op->read_iter(&kiocb, iter);  in do_iter_readv_writev()
825 		ret = filp->f_op->write_iter(&kiocb, iter);  in do_iter_readv_writev()
845 			nr = filp->f_op->read(filp, iter_iov_addr(iter),  in do_loop_readv_writev()
848 			nr = filp->f_op->write(filp, iter_iov_addr(iter),  in do_loop_readv_writev()
872 	if (!file->f_op->read_iter)  in vfs_iocb_iter_read()
886 	ret = file->f_op->read_iter(iocb, iter);  in vfs_iocb_iter_read()
900 	if (!file->f_op->read_iter)  in vfs_iter_read()
932 	if (!file->f_op->write_iter)  in vfs_iocb_iter_write()
947 	ret = file->f_op->write_iter(iocb, iter);  in vfs_iocb_iter_write()
967 	if (!file->f_op->write_iter)  in vfs_iter_write()
1015 	if (file->f_op->read_iter)  in vfs_readv()
1054 	if (file->f_op->write_iter)  in vfs_writev()
1505 	} else if (file_out->f_op->copy_file_range) {  in generic_copy_file_checks()
1506 		if (file_in->f_op->copy_file_range !=  in generic_copy_file_checks()
1507 		    file_out->f_op->copy_file_range)  in generic_copy_file_checks()
1584 	if (!splice && file_out->f_op->copy_file_range) {  in vfs_copy_file_range()
1585 		ret = file_out->f_op->copy_file_range(file_in, pos_in,  in vfs_copy_file_range()
1588 	} else if (!splice && file_in->f_op->remap_file_range && samesb) {  in vfs_copy_file_range()
1589 		ret = file_in->f_op->remap_file_range(file_in, pos_in,  in vfs_copy_file_range()
1746 	      (file->f_op->fop_flags & FOP_BUFFER_WASYNC)))  in generic_write_checks_count()