Re: parallel lookups on NFS

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On Sat, 2016-04-30 at 21:57 +0100, Al Viro wrote:
> On Sat, Apr 30, 2016 at 04:39:25PM -0400, Jeff Layton wrote:
> 
> > 
> > Attached. Also I ran the same test on a 4.6.0-rc1 kernel and it worked
> > fine, so it does seem to be a regression introduced somewhere in your
> > patch pile. Also, FWIW the machine is a KVM guest.
> OK...  Could you try #work.lookups on your setup?  That doesn't contain the
> last commit; the deadlock ought to be dealt with, though.  I'm trying to
> reproduce the corruption with KASAN enabled, will try your config once that's
> finished...


That branch seems to work fine. The same test didn't hang and didn't crash.

Cheers,
-- 
Jeff Layton <jlayton@xxxxxxxxxxxxxxx>

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