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Date: Tue, 25 May 2010 08:16:11 -0700 (PDT)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Peter Zijlstra <peterz@infradead.org>
cc: Michel Lespinasse <walken@google.com>, David Howells <dhowells@redhat.com>,
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       Mike Waychison <mikew@google.com>,
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Subject: Re: [PATCH 00/11] V4: rwsem changes + down_read_critical()
 proposal
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On Tue, 25 May 2010, Peter Zijlstra wrote:
> 
> So what happened to those patches that dropped mmap_sem during I/O?

They were horrible. The amount of retrying was just nasty. I don't think 
it's going to ever be a viable approach.

Feel free to prove me wrong with clean patches, but I doubt you can.

		Linus