[PATCH v5] procfs: Improve Scaling in proc

I am currently tracking a hotlock reported by a customer on a large system, 512 cores. I am currently running 3.8-rc7 but the issue looks like it has been this way for a very long time. The offending lock is proc_dir_entry->pde_unload_lock. This patch converts the lock to use the rcu. However

[PATCH v5] procfs: Improve Scaling in proc

I am currently tracking a hotlock reported by a customer on a large system, 512 cores. I am currently running 3.8-rc7 but the issue looks like it has been this way for a very long time. The offending lock is proc_dir_entry-pde_unload_lock. This patch converts the lock to use the rcu. However the