On Wed, 16 Oct 2024 at 23:27, Shakeel Butt <shakeel.butt@xxxxxxxxx> wrote: > Why is it bad? I can understand fuse server getting blocked on fuse > folios is bad but why it is bad for other applications/tasks? I am > wondering network filesystems have to handle similar situation then why > is it bad just for fuse? You need privileges (physical access) to unplug the network cable. You don't need privileges (in most setups) to run a fuse server. > It might be a bit more than sprinkling. The reclaim code has to activate > the folio to avoid reclaiming the folio in near future. I am not sure > what we will need to do for move_pages() syscall. Maybe move_pages() is okay, because it is explicitly targeting a fuse mmap. Is this the only way to trigger MIGRATE_SYNC? Thanks, Miklos
