On Tue, 18 Jun 2024 14:54:12 +0800 Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx> wrote: > Shmem will support large folio allocation [1] [2] to get a better performance, > however, the memory reclaim still splits the precious large folios when trying > to swap-out shmem, which may lead to the memory fragmentation issue and can not > take advantage of the large folio for shmeme. > > Moreover, the swap code already supports for swapping out large folio without > split, and large folio swap-in[3] series is queued into mm-unstable branch. > Hence this patch set also supports the large folio swap-out and swap-in for > shmem. I'll add this to mm-unstable for some exposure, but I wonder how much testing it will have recieved by the time the next merge window opens? > Functional testing > ================== > I use the latest mm-unstable branch to test with reverting Chris's > "mm: swap: mTHP swap allocator base on swap cluster order" series which > can cause some problems (Hugh also reported in [4]). I dropped Chris's series from mm-unstable.
