linux-kernel - Re: Switching TestSetPageLocked to trylock

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Date:	Tue, 05 Aug 2008 14:01:59 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Nick Piggin <nickpiggin@...oo.com.au>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Switching TestSetPageLocked to trylock_page


> Yup.  A mechanical rename-foo-to-bar can be prepared and merged late -
> there's little payback for the pain of maintaining it for a couple of
> months.
> 
> Would prefer either that we hold off until after 2.6.27 is released or
> just do it now.

I'd like to have the performance improvement on powerpc in 2.6.27 :-)

I've always hated the way we abused bitops as locks, it's terribly
inefficient for us, so that's a nice cleanup as far as I'm concerned.

Cheers,
Ben.


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