> +/* Update inode timestamps and remove security privileges when remapping. */
> +int generic_remap_file_range_touch(struct file *file, bool is_dedupe)
> +{
> + int ret;
> +
> + /* If can't alter the file contents, we're done. */
> + if (is_dedupe)
> + return 0;
> +
> + /* Update the timestamps, since we can alter file contents. */
> + if (!(file->f_mode & FMODE_NOCMTIME)) {
> + ret = file_update_time(file);
> + if (ret)
> + return ret;
> + }
> +
> + /*
> + * Clear the security bits if the process is not being run by root.
> + * This keeps people from modifying setuid and setgid binaries.
> + */
> + return file_remove_privs(file);
> +}
> +EXPORT_SYMBOL(generic_remap_file_range_touch);
The name seems a little out of touch with what it actually does.
Also why a bool argument instead of the more descriptive flags which
introduced a few patches ago?
