On Sun, Jul 17, 2011 at 10:50:27AM +1000, Anton Blanchard wrote: > Looking closer, all of these calls are in pipefs and sockfs. > Since we never mount either filesystem they never get a long term > reference and we always end up in the very slow write brlock path > that takes a lock for each online CPU. > > Here is a quick hack that takes a long term reference on pipefs > and sockfs which fixes the problem. Any thoughts on how we should > fix it properly? I know Tim and Andi have been looking into this ... I forget what their fix was though. -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- 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