linux-kernel - Re: [patch 06/52] fs: scale files

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Message-ID: <1277365937.1875.883.camel@laptop>
Date:	Thu, 24 Jun 2010 09:52:17 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	npiggin@...e.de
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	John Stultz <johnstul@...ibm.com>,
	Frank Mayhar <fmayhar@...gle.com>
Subject: Re: [patch 06/52] fs: scale files_lock

On Thu, 2010-06-24 at 13:02 +1000, npiggin@...e.de wrote:
> 
> One difficulty with this approach is that a file can be removed from the list
> by another CPU. We must track which per-cpu list the file is on.  Scalability
> could suffer if files are frequently removed from different cpu's list.


Is this really a lot less complex than what I did with my fine-grained
locked list?


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