What filesystems would be needing this, and when could we see live code
which actually uses it?
> +/*
> + * Helper function for invalidate_mmap_range().
> + * Both hba and hlen are page numbers in PAGE_SIZE units.
> + */
> +static void
> +invalidate_mmap_range_list(struct list_head *head,
> + unsigned long const hba,
> + unsigned long const hlen)
Be nice to consolidate this with vmtruncate_list, so that it gets
exercised.
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