do_clone_file_range  142 fs/overlayfs/copy_up.c 	cloned = do_clone_file_range(old_file, 0, new_file, 0, len, 0);
do_clone_file_range 2067 fs/read_write.c EXPORT_SYMBOL(do_clone_file_range);
do_clone_file_range 2076 fs/read_write.c 	ret = do_clone_file_range(file_in, pos_in, file_out, pos_out, len,
do_clone_file_range 1930 include/linux/fs.h extern loff_t do_clone_file_range(struct file *file_in, loff_t pos_in,