Re: [PATCH v2 4/4] mm/vmalloc: Hugepage vmalloc mappings

Nicholas Piggin
2020-04-14T14:48:35Z

Excerpts from Christoph Hellwig's message of April 14, 2020 11:02 pm:
> On Tue, Apr 14, 2020 at 10:13:44PM +1000, Nicholas Piggin wrote:
>> Which case? Usually the answer would be because you don't want to use
>> contiguous physical memory and/or you don't want to use the linear
>> mapping.
>
> But with huge pages you do by definition already use large contiguous
> areas. So you want allocations larger than "small" huge pages but not
> using gigantic pages using vmalloc?

Yes.

Thanks,
Nick