On Fri, Apr 05, 2013 at 12:05:26PM -0500, Nathan Zimmer wrote: > On 04/04/2013 03:44 PM, Al Viro wrote: > >On Thu, Apr 04, 2013 at 12:12:05PM -0500, Nathan Zimmer wrote: > > > >>Ok I am cloning the tree now. > >>It does look like the patches would conflict. > >>I'll run some tests and take a deeper look. > >FWIW, I've just pushed there a tentative patch that switches to hopefully > >saner locking (head should be at cb673c115c1f99d3480471ca5d8cb3f89a1e3bee). > >Is that more or less what you want wrt spinlock contention? > > > >One note: for any given pde_opener, close_pdeo() can be called at most > >by two threads - final fput() and remove_proc_entry() resp. I think > >the use of completion + flag is safe there; pde->pde_unload_lock > >should serialize the critical areas. > > Something isn't quite right. I keep getting hung during boot. > dracut: Mounted root filesystem /dev/sda8 > dracut: Switching root > > I'll try to get some more info on a smaller box.
Umm... Try to add WARN_ON(1) in entry_rundown(), just to see what's getting hit (don't bother with entry name, stack trace will be enough). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
