Sorry what your patch claims is that the raid array can change the number of array's otherwise there is no need for an rcu. > What makes you think that md is static when you array itself can grow. > md contains information pertaining to the array it holds. This is what I saying my the md is built statically on top of the raid. -- -- Sujit K M -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html