Please refer to my IDE freeze patch last week: http://lkml.org/lkml/2005/8/25/140
It provides userspace with a method to freeze the queue and park the head (through sysfs), along with a timeout to unfreeze, and works quite well. It is in the process of being moved to the block layer however so that implementation for libata will be simpler. Yani - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/