[Ocfs2-devel] [PATCH 10/25] vfs: create generic_remap_file_range_touch to update inode metadata

[Christoph Hellwig]

> +/* 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?