On Mon, 2007-08-06 at 14:53 +0400, Oleg Nesterov wrote: > But this makes ->lockdep_map meaningless? We always take wq->lockdep_map > for reading, now we can't detect deadlocks. > > read_lock(A); > lock(B); > > vs > lock(B); > read_lock(A); > > is valid, kernel/lockdep.c should not complain.
Ah, hmm. Good point, I guess you can always have multiple read locks. Then we'd have to make a new parameter or such to get rid of the recursive locking try message. But if you want to deprecate the API anyway then this is a good way to find it. johannes
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