For the moment, ceph has to continue using PG_private_2. It doesn't use netfs_writepages(). I have mostly complete patches to fix that, but they got popped onto the back burner for a bit. I've finally managed to get cephfs set up and can now reproduce the hang you're seeing. David To unsubscribe from this group and stop receiving emails from it, send an email to linux-cachefs+unsubscribe@xxxxxxxxxx.