On Sun, Jun 16, 2024 at 12:16:10PM +1200, Barry Song wrote: > As I understand it, this isn't happening because we don't support > mTHP swapping out to a swapfile, whether it's on NFS or any > other filesystem. It does happen. The reason why I sent this patch is becaue I observed the BUG_ON trigger on a trivial swap generation workload (usemem.c from xfstests).