Re: [v2 00/16] mm: PMD-level swap entries for anonymous THPs

[Usama Arif]

On 13/06/2026 20:27, Zi Yan wrote:
> On 9 Jun 2026, at 10:29, Usama Arif wrote:
> 
>> On 02/06/2026 15:24, Usama Arif wrote:
>>> When reclaim swaps out a PMD-mapped anonymous THP today, the PMD is
>>> split into 512 PTE-level swap entries via TTU_SPLIT_HUGE_PMD before
>>> unmap.
>>>
>>> This series introduces a PMD-level swap entry. The huge mapping is
>>> preserved across the swap round-trip, and do_huge_pmd_swap_page()
>>> resolves the entire 2 MB region in a single fault on swap-in,
>>> no khugepaged involvement is needed. swap_map metadata is identical
>>> either way (512 single-slot counts), so the PTE split buys nothing
>>> on the swap side, it is purely a page-table representation change.
>>>
>>
>> Hello!
>>
>> Just following up if there were any reviews/comments on this series!
>>
>> I know its a large series but was just checking if there was any
>> feedback?
> 
> Maybe send first 6 clean-up patches separately to get them merged first?

Good idea! Will do that. Thanks! 


> 
> --
> Best Regards,
> Yan, Zi