Sergey Senozhatsky <[email protected]> writes: > On (06/27/18 21:51), Andrew Morton wrote: >> On Fri, 22 Jun 2018 11:51:30 +0800 "Huang, Ying" <[email protected]> >> 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; > }
That's not on my TODO list. Do you have interest to work on this? Best Regards, Huang, Ying
