On Wed, 7 May 2008 10:08:18 -0700 (PDT) Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > Which is why I'm 100% convinced it's not even worth saving the old code. > It needs to use mutexes, or spinlocks. I bet it has *nothing* to do with > "slow path" other than the fact that it gets to that slow path much more > these days. Stupid question: why doesn't lock_kernel() use a mutex? (stupid answer: it'll trigger might_sleep() checks when we do it early in boot with irqs disabled, but we can fix that) (And __might_sleep()'s system_state check might even save us from that) Of course, we shouldn't change anything until we've worked out why the new semaphores got slower. -- 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
