On Thu, Nov 07, 2024 at 02:24:20PM +0530, Shivank Garg wrote: > The folio allocation path from guest_memfd typically looks like this... > > kvm_gmem_get_folio > filemap_grab_folio > __filemap_get_folio > filemap_alloc_folio > __folio_alloc_node_noprof > -> goes to the buddy allocator > > Hence, I am trying to have a version of filemap_alloc_folio() that takes an mpol. It only takes that path if cpuset_do_page_mem_spread() is true. Is the real problem that you're trying to solve that cpusets are being used incorrectly? Backing up, it seems like you want to make a change to the page cache, you've had a long discussion with people who aren't the page cache maintainer, and you all understand the pros and cons of everything, and here you are dumping a solution on me without talking to me, even though I was at Plumbers, you didn't find me to tell me I needed to go to your talk. So you haven't explained a damned thing to me, and I'm annoyed at you. Do better. Starting with your cover letter.
