On Sat, 12 Jun 2021 17:45:52 +0800 Muchun Song <songmuchun@xxxxxxxxxxxxx> wrote: > In order to reduce the difficulty of code review in series[1]. We disable > huge PMD mapping of vmemmap pages when that feature is enabled. In this > series, we do not disable huge PMD mapping of vmemmap pages anymore. We > will split huge PMD mapping when needed. When HugeTLB pages are freed from > the pool we do not attempt coalasce and move back to a PMD mapping because > it is much more complex. > > [1] https://lore.kernel.org/linux-doc/20210510030027.56044-1-songmuchun@xxxxxxxxxxxxx/ [1] had a nice [0/n] description but the v2 series lost that. I could copy/paste the v1 changelogging but I am unsure that it has been maintained appropriately for the v2 series. I think I'll pass on this v2 pending additional review input. Please reinstate the [0/n] overview if/when resending?