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Re: [dm-devel] [PATCH] dm-snapshot: workaround for a lockdep warning




On Tue, 17 Sep 2013, Mikulas Patocka wrote:

> BTW. this patch is no longer needed on 3.11 because md->io_lock was 
> removed there, so the false lockdep warning doesn't happen.
> 
> So we need to get this patch to stable trees 3.5 to 3.10, but not 
> upstream. How to push the patch there without pushing it upstream?
> 
> Mikulas

It's more complicated than that - the original Zdenek's report shows that 
the false warning happened on kernel "3.11.1-300.fc20.x86_64+debug". But I 
am not able to reproduce the bug on 3.11, I only reproduced it on 3.5-3.10 
kernels.

Zdenek, could you reproduce the bug on kernel 3.11?

Mikulas


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