On Fri, 18 May 2018, John Hubbard wrote: > > In other words, get_user_pages_longterm() is just a short term > > band-aid for RDMA until we can get that infrastructure built. We don't > > need to go down any mmu-notifier rabbit holes. > > > > git grep claims that break_layouts is so far an XFS-only feature, though. > Were there plans to fix this for all filesystems? break_layouts? This sounds from my perspective like a mmu notifier callback with slightly different semantics. Maybe add another callback to generalize that functionality?