search for: sync_extdelay

...time. The motivation for such updating policy is surprisingly not purely suicidal - it can allow disks on laptops to spin down immediately after I/O operations and stay idle for longer periods of time, thus saving considerable amount of battery power. The patch introduces a new sysctl tunable vfs.sync_extdelay which controls the delay duration in seconds. If the variable is set to 0, the standard UFS synching policy is restored. The tunable can be either modified by hand or controlled by APM daemon using the attached rc.syncdelay script. When enabled, the extended delaying policy introduces some additio...