On Sat, 2011-07-16 at 19:04 -0600, Matthew Wilcox wrote: > 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. > I've sent out a trial patch a while ago on this problem, but didn't get a response back. Nick or Al, can you take another look at this patch now that other folks are also running into this issue? http://marc.info/?l=linux-fsdevel&m=130273200502778&w=2 Thanks. Tim -- 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
