| [Unit] | |
| Description=Disallow dropping I/O caches | |
| DefaultDependencies=off | |
| Conflicts=shutdown.target | |
| After=systemd-modules-load.service systemd-sysctl.service sysctl.service | |
| Before=shutdown.target | |
| ConditionPathExists=/proc/sys/vm/drop_caches | |
| [Service] | |
| Type=oneshot | |
| ExecStart=/bin/sh -c "mkfifo /run/$$$$ && trap 'rm -f /run/$$$$' EXIT && mount --bind /run/$$$$ /proc/sys/vm/drop_caches" | |
| TimeoutSec=10s | |
| RemainAfterExit=on | |
| [Install] | |
| WantedBy=sysinit.target |