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

[Lance Yang]

On 2026/6/14 03:34, Usama Arif wrote:
> 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!

Yeah, sounds good. Less churn, and the cleanups can land first, and
life is easier for everyone :D