On Tue, Feb 21, 2023 at 10:08 AM Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx> wrote: > > > > On 2023/1/27 00:40, Matthew Wilcox wrote: > > I'd like to do another session on how the struct page dismemberment > > is going and what remains to be done. Given how widely struct page is > > used, I think there will be interest from more than just MM, so I'd > > suggest a plenary session. > > > > If I were hosting this session today, topics would include: > > > > Splitting out users: > > > > - slab (done!) > > - netmem (in progress) > > - hugetlb (in akpm) > > - tail pages (in akpm) > > - page tables > > - ZONE_DEVICE > > > > Users that really should have their own types: > > > > - zsmalloc > > - bootmem > > - percpu > > - buddy > > - vmalloc > > > > Converting filesystems to folios: > > > > - XFS (done) > > - AFS (done) > > - NFS (in progress) > > - ext4 (in progress) > > - f2fs (in progress) > > - ... others? > > > > Unresolved challenges: > > > > - mapcount > > - AnonExclusive > > - Splitting anon & file folios apart > > - Removing PG_error & PG_private > > I'm interested in this topic too, also I'd like to get some idea of the > future of the page dismemberment timeline so that I can have time to keep > the pace with it since some embedded use cases like Android are > memory-sensitive all the time. > > Minor, it seems some apis still use ->lru field to chain bulk pages, > perhaps it needs some changes as well: > https://lore.kernel.org/r/20221222124412.rpnl2vojnx7izoow@xxxxxxxxxxxxxxxxxxx > https://lore.kernel.org/r/20230214190221.1156876-2-shy828301@xxxxxxxxx The dm-crypt patches don't use list anymore. The bulk allocator still supports the list version, but so far there is no user, so it may be gone soon. > > Thanks, > Gao Xiang > > > > > This will probably all change before May. > > > > I'd like to nominate Vishal Moola & Sidhartha Kumar as invitees based on > > their work to convert various functions from pages to folios. >
