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Date: Thu, 5 Feb 2004 19:34:49 -0800
From: Andrew Morton <akpm@osdl.org>
To: Nick Piggin <piggin@cyberone.com.au>
Cc: lord@xfs.org, ak@suse.de, linux-kernel@vger.kernel.org,
       kenneth.w.chen@intel.com
Subject: Re: Limit hash table size
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Nick Piggin <piggin@cyberone.com.au> wrote:
>
> >Was it a highmem box?  If so, was the filesystem in question placing
>  >directory pagecache in highmem?  If so, that was really bad on older 2.4:
>  >the directory pagecache in highmem pins down all directory inodes.
>  >
>  >
> 
>  2.6.2-mm1 should fix this I think.

2.6.anything should fix it.  It used to, anyway.

>  In particular, this hunk in vm-shrink-zone.patch

That's on the direct reclaim path - for sane workloads most of the freeing
activity is via kswapd.