1377 ssize_t generic_copy_file_range(struct file *file_in, loff_t pos_in,  in generic_copy_file_range()  argument
1381 	return do_splice_direct(file_in, &pos_in, file_out, &pos_out,  in generic_copy_file_range()
1386 static ssize_t do_copy_file_range(struct file *file_in, loff_t pos_in,  in do_copy_file_range()  argument
1400 		return file_out->f_op->copy_file_range(file_in, pos_in,  in do_copy_file_range()
1404 	return generic_copy_file_range(file_in, pos_in, file_out, pos_out, len,  in do_copy_file_range()
1415 static int generic_copy_file_checks(struct file *file_in, loff_t pos_in,  in generic_copy_file_checks()  argument
1437 	if (pos_in + count < pos_in || pos_out + count < pos_out)  in generic_copy_file_checks()
1442 	if (pos_in >= size_in)  in generic_copy_file_checks()
1445 		count = min(count, size_in - (uint64_t)pos_in);  in generic_copy_file_checks()
1453 	    pos_out + count > pos_in &&  in generic_copy_file_checks()
1454 	    pos_out < pos_in + count)  in generic_copy_file_checks()
1466 ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in,  in vfs_copy_file_range()  argument
1475 	ret = generic_copy_file_checks(file_in, pos_in, file_out, pos_out, &len,  in vfs_copy_file_range()
1480 	ret = rw_verify_area(READ, file_in, &pos_in, len);  in vfs_copy_file_range()
1501 		cloned = file_in->f_op->remap_file_range(file_in, pos_in,  in vfs_copy_file_range()
1511 	ret = do_copy_file_range(file_in, pos_in, file_out, pos_out, len,  in vfs_copy_file_range()
1535 	loff_t pos_in;  in SYSCALL_DEFINE6()  local
1551 		if (copy_from_user(&pos_in, off_in, sizeof(loff_t)))  in SYSCALL_DEFINE6()
1554 		pos_in = f_in.file->f_pos;  in SYSCALL_DEFINE6()
1564 	ret = vfs_copy_file_range(f_in.file, pos_in, f_out.file, pos_out, len,  in SYSCALL_DEFINE6()
1567 		pos_in += ret;  in SYSCALL_DEFINE6()
1571 			if (copy_to_user(off_in, &pos_in, sizeof(loff_t)))  in SYSCALL_DEFINE6()
1574 			f_in.file->f_pos = pos_in;  in SYSCALL_DEFINE6()