Re: [PATCH v4 5/9] mm/memory_hotplug: add multi-range hotunplug

["David Hildenbrand (Arm)" <david@kernel.org>]

>  EXPORT_SYMBOL_GPL(offline_and_remove_memory);
> +
> +/**
> + * offline_and_remove_memory_ranges - offline and remove multiple memory ranges
> + * @ranges: array of physical address ranges to offline and remove
> + * @nr_ranges: number of entries in @ranges
> + *
> + * Offline and remove several memory ranges as one operation, serialized
> + * against other hotplug operations by a single lock_device_hotplug().
> + *
> + * Unlike calling offline_and_remove_memory() in a loop, this offlines *all*
> + * ranges before removing any of them.  If offlining any range fails, the
> + * offlining of the ranges processed so far is reverted and nothing is
> + * removed, leaving every range online as it was before the call.  This gives
> + * callers all-or-nothing semantics for the offline step, so a failed unplug
> + * does not leave a device split between online and removed ranges.
> + *
> + * Each range must be memory-block aligned in start and size.
> + *
> + * Return: 0 on success, negative errno otherwise.  On failure no range has
> + * been removed.
> + */
> +int offline_and_remove_memory_ranges(const struct range *ranges, int nr_ranges)
> +{

Is there a way to just generalize the logic in offline_and_remove_memory() to
multiple ranges, making offline_and_remove_memory() then a simple wrapper around
the new offline_and_remove_memory_ranges(), providing only a single range?

-- 
Cheers,

David