zfs-fuse-oom.service

[Unit]
Description=zfs-fuse OOM killer immunization
After=zfs-fuse-pid.service
ConditionPathExists=/var/run/zfs/zfs-fuse.pid

[Service]
Type=oneshot
ExecStart=/bin/bash -c '/bin/echo -1000 > /proc/`cat /var/run/zfs/zfs-fuse.pid`/oom_score_adj'
RemainAfterExit=yes

[Install]
WantedBy=basic.target