From: Christoph Hellwig <hch@infradead.org>
To: Hanna Linder <hannal@us.ibm.com>
Cc: alan@lxorguk.ukuu.org.uk, viro@math.psu.edu,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.4.19-pre8] FastWalk Dcache back port from 2.5
Date: Fri, 10 May 2002 00:58:52 +0100 [thread overview]
Message-ID: <20020510005851.B21332@infradead.org> (raw)
In-Reply-To: <16290000.1020988333@w-hlinder.des>
On Thu, May 09, 2002 at 04:52:13PM -0700, Hanna Linder wrote:
> Hello,
>
> Please consider this new and improved fast walk patch for
> inclusion in your 2.4.19 tree. This patch reduces cacheline bouncing
> due to numerous atomic increments and decrements of the d_count
> reference counter during path walking by holding the dcache_lock
> as long as the dentries are in the cache.
> Linus included my original patch in 2.5.11. Al Viro made a
> few great changes in 2.5.12 and Paul Menage added one fix. The following
> patch includes their changes as well. This code has been in 2.5 for
> almost 3 weeks and appears to be quite stable.
The fixed code isn't there for a long time yet.. I'd rather see the
path_lookup cleanup which already is in -ac go into 2.4.19 (and if I
understood Marcelo right that'll be release in the next time) and wait
for 2.4.20-pre<early> for the massive changes.
Just my .5 (Euro-)Cent.
next prev parent reply other threads:[~2002-05-09 23:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-09 23:52 Hanna Linder
2002-05-09 23:58 ` Christoph Hellwig [this message]
2002-05-10 2:18 ` Hanna V Linder
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