Re: Random panics seen in 2.6.18-rc1

[Ingo Molnar]

* Andrew Morton <akpm@xxxxxxxx> wrote:

> > yeah, i'll fix this. Any suggestions of how to avoid the parameter 
> > passing? (without ugly #ifdeffery)
> 
> No, I don't see a way apart from inlining __cache_free(), or inlining 
> cache_free_alien() into both kfree() and kmem_cache_free(), both of 
> which are unattractive.

Arjan has an idea that looks nice to me: passing the nesting level via a 
special type that has zero size on non-lockdep. This means that the 
current "nesting + 1" arithmetics has to be turned into something like: 
lockdep_deeper_nesting(var), and that all explicit uses of '0' have to 
become symbolic - the former is acceptable and the later is desirable. 
This could possibly also be used to clean up some of the VFS-internal 
nesting. Hm?

	Ingo
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