On (06/27/18 21:51), Andrew Morton wrote: > On Fri, 22 Jun 2018 11:51:30 +0800 "Huang, Ying" <ying.hu...@intel.com> wrote: > > > This is the final step of THP (Transparent Huge Page) swap > > optimization. After the first and second step, the splitting huge > > page is delayed from almost the first step of swapout to after swapout > > has been finished. In this step, we avoid splitting THP for swapout > > and swapout/swapin the THP in one piece. > > It's a tremendously good performance improvement. It's also a > tremendously large patchset :(
Will zswap gain a THP swap out/in support at some point? mm/zswap.c: static int zswap_frontswap_store(...) ... /* THP isn't supported */ if (PageTransHuge(page)) { ret = -EINVAL; goto reject; } -ss