Re: [PATCH v2] mm/page_alloc: Return nr_populated when the array is full

On Mon, Jun 28, 2021 at 02:12:59PM -0400, Chuck Lever wrote:

The SUNRPC consumer of __alloc_bulk_pages() legitimately calls it
with a full array sometimes. In that case, the correct return code,
according to the API contract, is to return the number of pages
already in the array/list.

Let's clean up the return logic to make it clear that the returned
value is always the total number of pages in the array/list, not the
number of pages that were allocated during this call.

This is more complicated than either v1 or the version that Mel sent
earlier today.  Is it worth it?