Re: [RFC][PATCH 0/7] lockdep: Support recurise-read locks

[Tetsuo Handa]

Yong Zhang wrote:
> 2011/4/22 Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>:
> >> But if you call locktest1/locktest2 firstly, the chain will not be established
> >> just because recursive read is not added to prev->after.
> >
> > This part is not OK. At least, I think lockdep should be able to establish the
> > chain when locktest1 is called AGAIN after locktest2 is called (i.e.
> > "cat /proc/locktest1 /proc/locktest2 /proc/locktest1" case).
> 
> I guess lockdep will warn on "cat /proc/locktest1 /proc/locktest2
> /proc/locktest1"

It should warn, but it doesn't warn.
You can confirm it using locktest.c in this thread.
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