netdev - Re: nfs client lockdep warning

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Date:	Mon, 12 Jan 2009 13:10:39 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	"J. Bruce Fields" <bfields@...ldses.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	netdev@...r.kernel.org, linux-nfs@...r.kernel.org,
	Trond Myklebust <trond@...app.com>,
	Nick Piggin <npiggin@...e.de>
Subject: Re: nfs client lockdep warning


* Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> Subject: lockdep,mm: fix might_fault() annotation
> 
> Some code (nfs/sunrpc) uses socket ops on kernel memory while holding
> the mmap_sem, this is safe because kernel memory doesn't get paged out,
> therefore we'll never actually fault, and the might_fault() annotations
> will generate false positives.
> 
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>

applied to tip/core/urgent, thanks guys!

I also added a:

 Reported-by: "J. Bruce Fields" <bfields@...ldses.org>

line as we always want to preserve the chain of bug reports and attribute 
them.

	Ingo
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