1387 ssize_t generic_copy_file_range(struct file *file_in, loff_t pos_in,  in generic_copy_file_range()  argument
1393 	return do_splice_direct(file_in, &pos_in, file_out, &pos_out,  in generic_copy_file_range()
1405 static int generic_copy_file_checks(struct file *file_in, loff_t pos_in,  in generic_copy_file_checks()  argument
1409 	struct inode *inode_in = file_inode(file_in);  in generic_copy_file_checks()
1415 	ret = generic_file_rw_checks(file_in, file_out);  in generic_copy_file_checks()
1432 		if (file_in->f_op->copy_file_range !=  in generic_copy_file_checks()
1435 	} else if (file_inode(file_in)->i_sb != file_inode(file_out)->i_sb) {  in generic_copy_file_checks()
1476 ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in,  in vfs_copy_file_range()  argument
1486 	ret = generic_copy_file_checks(file_in, pos_in, file_out, pos_out, &len,  in vfs_copy_file_range()
1491 	ret = rw_verify_area(READ, file_in, &pos_in, len);  in vfs_copy_file_range()
1510 		ret = file_out->f_op->copy_file_range(file_in, pos_in,  in vfs_copy_file_range()
1516 	if (!splice && file_in->f_op->remap_file_range &&  in vfs_copy_file_range()
1517 	    file_inode(file_in)->i_sb == file_inode(file_out)->i_sb) {  in vfs_copy_file_range()
1518 		ret = file_in->f_op->remap_file_range(file_in, pos_in,  in vfs_copy_file_range()
1539 	ret = generic_copy_file_range(file_in, pos_in, file_out, pos_out, len,  in vfs_copy_file_range()
1544 		fsnotify_access(file_in);  in vfs_copy_file_range()
1704 int generic_file_rw_checks(struct file *file_in, struct file *file_out)  in generic_file_rw_checks()  argument
1706 	struct inode *inode_in = file_inode(file_in);  in generic_file_rw_checks()
1715 	if (!(file_in->f_mode & FMODE_READ) ||  in generic_file_rw_checks()