On Sun, May 26, 2024 at 07:43:10PM -0700, Dave Hansen wrote: > On 5/26/24 18:57, Byungchul Park wrote: > ... > > Plus, I will add another give-up at code changing the permission of vma > > to writable. > > I suspect you have a much more general problem on your hands. Just > tweaking the VFS or mmap() code likely isn't going to cut it. LUF is interested in limited folios that are migratable or reclaimable in lru for now. So, IMHO, fixing a few things is going to cut it. > I guess we'll see what you come up with next, but this email was really > just the result of Vlastimil and I chatting on IRC for five minutes > about this set. > > It has absolutely not been tested nor reviewed enough. <fud>I hope the > performance gains stick around once more of the bugs are gone.</fud> Sure. It should be. Byungchul