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    SubjectRe: hash table sizes
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    >>>>> "Andrew" == Andrew Morton <akpm@osdl.org> writes:

    Andrew> jbarnes@sgi.com (Jesse Barnes) wrote:
    >> Something like that might be ok, but on our system, all memory is
    >> in ZONE_DMA...

    Andrew> Well yes, we'd want

    Andrew> vfs_caches_init(min(num_physpages,
    Andrew> some_platform_limit()));

    Andrew> which on ia32 would evaluate to nr_free_buffer_pages() and on
    Andrew> ia64 would evaluate to the size of one of those zones.

    What about something like this? I believe node_present_pages should be
    the same as nym_physpages on a non-NUMA machine. If not we can make it
    min(num_physpages, NODE_DATA(0)->node_present_pages).

    Of course this might not work perfectly if one has multiple nodes and
    node 0 has no or very little memory. It would also be nice if one
    could spread the various caches onto various nodes, but we can leave
    that for stage 2 ;-)

    Cheers,
    Jes

    --- orig/linux-2.6.0-test10/init/main.c Sun Nov 23 17:31:14 2003
    +++ linux-2.6.0-test10/init/main.c Fri Nov 28 07:06:45 2003
    @@ -447,7 +447,7 @@
    proc_caches_init();
    buffer_init();
    security_scaffolding_startup();
    - vfs_caches_init(num_physpages);
    + vfs_caches_init(NODE_DATA(0)->node_present_pages);
    radix_tree_init();
    signals_init();
    /* rootfs populating might need page-writeback */
    -
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