Can you please take a look at bug39852?

DISCUSSION Tejun Heo 1 participant 1 message Jul 30, 2011 2 messages not in the archive

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Tejun Heo

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2011-07-30 12:46 UTC #2 lore raw

(cc'ing Jens and LKML)

Quoted 7 lines · Peter Osterlund

Quoted 4 lines · Tejun Heo
It looks like spurious lockdep warning via pkt_open(). Seems like the problem has been there since the beginning. What do you think?
https://bugzilla.kernel.org/show_bug.cgi?id=39852

Quoted 7 lines

Yes, it is a spurious warning that has been there since the beginning. There were patches to silence the warning back in 2006
	https://lkml.org/lkml/2006/7/25/41
but they were considered not the right approach. I don't know what the right approach is.

I see. I think the proper solution would be adding a variant of blkdev_get(), say blkdev_get_nested(), to give the inner open a different locking class. Jens, what do you think?

Thanks.

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tejun