Re: Limit hash table size

[Nick Piggin]

Andrew Morton wrote:

> Nick Piggin <piggin@xxxxxxxxxxxxxxx> 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.

OK - he said the try to free pages path was being called but
maybe he didn't actually mean try_to_free_pages.

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