On 12.12.23 08:37, Vivek Kasireddy wrote:
The first two patches were previously reviewed but not yet merged. These ones need to be merged first as the fourth patch depends on the changes introduced in them and they also fix bugs seen in very specific scenarios (running Qemu with hugetlb=on, blob=true and rebooting guest VM). The third patch introduces memfd_pin_folios() API and the fourth patch converts udmabuf driver to use folios. The fifth patch shows how the udmabuf driver can make use of the new API to longterm-pin the folios. The last patch adds two new udmabuf selftests to verify data coherency after potential page migration.
We should probably get started with the first two patches, they are independent of the remaining discussion regarding memfd_pin_folios(). -- Cheers, David / dhildenb
