Re: [PATCH 2.4.19-pre8] FastWalk Dcache back port from 2.5

[Christoph Hellwig]

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.