Re: inode_cache / dentry_cache not being reclaimed aggressivelyenough on low-memory PCs

[Andrew Morton]

Alex Buell <alex.buell@xxxxxxxxxxxxx> wrote:
>
> On Sat, 3 Jan 2004, Andrew Morton wrote:
> 
> > John Lash <jlash@xxxxxxxxxxxxx> wrote:
> > >
> > > As it stands, it will maintain as many unused entries as there are used entries.
> > >  If this low memory system las a large, stable, number of inuse dentry objects,
> > >  the unused entries will match it thereby holding double the memory and possibly
> > >  causing the problem you see.
> > 
> > Yup.   There is a fix in 2.6.1-rc1 for this.
> 
> Which change would that be? It would be nice to back-port that to 2.4.x if 
> that's possible?

It is not backportable.

You could try increasing `count' in shrink_dcache_memory() and
shrink_icache_memory().  Also you should be using 2.4.23 or later because
it does have improvements in the memory reclaim area.


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