> +/* Discard pages backing a range of the xfile. */
> +void
> +xfile_discard(
> + struct xfile *xf,
> + loff_t pos,
> + u64 count)
> +{
> + trace_xfile_discard(xf, pos, count);
> +
> + shmem_truncate_range(file_inode(xf->file), pos, pos + count - 1);
> +}
Can you split this xfile infrastructure addition into a separate patch
instead of hiding it here?
Otherwise looks good:
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
