Thanx aboo, But how can i differentiate b/w TASK_INTERRUPTABLE and TASK_UNINTERRUPTABLE? so Do u mean both d states belon to what we call as sleepin state? Regards Hari ===== Musically With Love , Hari Prashanth __________________________________ Do you Yahoo!? Send a seasonal email greeting and help others. Do good. http://celebrity.mail.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/