On Thu, 21 Oct 2010, Andrew Morton wrote: > That isn't actually what I was suggesting. I was suggesting the use of > an inlined, this_cpu_add()-using percpu_counter_add() variant which > still does the batched spilling into ->count. IOW, just speed up the > current implementation along the lines of > > { > val = this_cpu_add_return(*fbc->counters, amount); this_cpu_add_return() is not in the kernel but could be realized using a variant offshoot of cmpxchg_local. I had something like that initially but omitted it since there was no use case. -- 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