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Date: Sat, 31 Aug 2002 13:26:42 -0700
From: Andrew Morton <akpm@zip.com.au>
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To: Daniel Phillips <phillips@arcor.de>
CC: Christian Ehrhardt <ehrhardt@mathematik.uni-ulm.de>,
       Linus Torvalds <torvalds@transmeta.com>,
       Marcelo Tosatti <marcelo@conectiva.com.br>,
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Subject: Re: [RFC] [PATCH] Include LRU in page count
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Daniel Phillips wrote:
> 
> Manfred suggested an approach to de-racing this race using
> atomic_dec_and_lock, which needs to be compared to the current approach.

Could simplify things, but not all architectures have an optimised
version.  So ia64, mips, parisc and s390 would end up taking
the lru lock on every page_cache_release.
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