On Tue, 2012-01-10 at 16:58 +0400, Stanislav Kinsbursky wrote: 

06.01.2012 00:58, Trond Myklebust пишет:

quoted

The second problem that was highlighted was the fact that as they stand
today, these patchsets do not allow for bisection. When we hit the Oops,
I had Bryan try to bisect where the problem arose. He ended up pointing
at the patch "SUNRPC: handle RPC client pipefs dentries by network
namespace aware routine", which is indeed the cause, but which is one of
the _dependencies_ for all the PipeFS notifier patches that fix the
problem.

I'm confused here. Does this means, that I have to fix patch "SUNRPC: handle RPC 
client pipefs dentries by network namespace aware routine" to make it able to 
bisect?

What I mean is that currently, I have various ways to Oops the kernel
when I apply "SUNRPC: handle RPC client pipefs dentries by network
namespace aware routine" before all these other followup patches are
applied.

One way to could fix this, might be to add dummy versions of
rpc_pipefs_notifier_register()/unregister() so that "NFS: idmap PipeFS
notifier introduced" and the other such patches can be applied without
compilation errors or Oopses before the "handle RPC client pipefs
dentries..." patch is applied. The latter could then enable the real
rpc_pipefs_notifier_register()/....

The point is to not have these patches add _known_ bugs to the kernel at
any point, so that someone who is trying to track down an unknown bug
via "git bisect" doesn't have to also cope with these avoidable
issues...

-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org
www.netapp.com

--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html