Re: [PATCH v7 4/7] mm/memory_hotplug: Support memmap_on_memory when memmap is not aligned to pageblocks

[Michal Hocko <mhocko@xxxxxxxx>]

On Tue 01-08-23 10:11:13, Aneesh Kumar K.V wrote:
[...]
> +	if (mode == MEMMAP_ON_MEMORY_FORCE) {
> +		unsigned long memmap_pages = memory_block_memmap_on_memory_pages();
		unsigned long wastage = memmap_pages - PFN_UP(memory_block_memmap_size());

		if (wastage)
			pr_info_once("memmap_on_memory=force will waste %ld pages in each memory block %ld\n",
				wastage, memory_block_size_bytes() >> PAGE_SHIFT);

would be more useful IMHO.

> +
> +		pr_info_once("Memory hotplug will waste %ld pages in each memory block\n",
> +			     memmap_pages - PFN_UP(memory_block_memmap_size()));
-- 
Michal Hocko
SUSE Labs