On Wed, Apr 28, 2010 at 04:23:52PM +0800, Changli Gao wrote: > On Wed, Apr 28, 2010 at 4:15 PM, Yong Zhang <yong.zhang@xxxxxxxxxxxxx> wrote: > > > > What do you mean "we don't need these processes"? > > If the work is less than the workers, we don't need the workers at the > tail of the exculsive list. Have you checked how exclusive waitqueues are even used? > > So some processs(at the tail of exclusive list)will be treated abnormally > > and it will sleep for a long time, is this reasonable? > > > > If there isn't enough work to be done, we'd better not disrupt them > and leave them sleeping forever to keep the scheduler happier. Do we > have reason to keep fair to all the workers? Does it have benefit? How about starving lock contenders? See wait_on_bit_lock() and grep for the users e.g. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
