With respect to congestion_wait function in mm/backing-dev.c, does congestion mean a situation where a process have to wait (to write more) in D state because dirty page flushing to disk is in progress? During congestion, do every process have to wait? Regards, Ram -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ