Re: Btrfs lockdep with 3.15 merge window v3.14-751-g683b6c6f82a6

From: Chris Mason
Date: Wed Apr 02 2014 - 15:43:55 EST


On 04/02/2014 12:47 PM, David Sterba wrote:
On Tue, Apr 01, 2014 at 06:23:11PM -0400, Josh Boyer wrote:
Below is a lockdep spew I have on a local VM running Linus' tree as of
this afternoon. The specific git commit is v3.14-751-g683b6c6f82a6.

[ 295.349016] CPU0 CPU1
[ 295.349016] ---- ----
[ 295.349016] lock(&found->groups_sem);
[ 295.349016] local_irq_disable();
[ 295.349016] lock(&delayed_node->mutex);
[ 295.349016] lock(&found->groups_sem);
[ 295.349016] <Interrupt>
[ 295.349016] lock(&delayed_node->mutex);

Fixed by https://urldefense.proofpoint.com/v1/url?u=https://patchwork.kernel.org/patch/3894781/&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=6%2FL0lzzDhu0Y1hL9xm%2BQyA%3D%3D%0A&m=R1vuFCUzlD4QksU2UH3APFiFgMVkwmMci%2Bktv%2BzqQnE%3D%0A&s=adbe2bfbb243d9781307cfff001f30c01afd35a32e0fb976ecca933ef4cebd26


I've got this lined up for my next pull as well. I sent early this time, but more is going in.

-chris
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