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    SubjectRe: [Bug #14141] order 2 page allocation failures (generic)
    On Mon, Oct 19, 2009 at 12:54:11PM +0300, Pekka Enberg wrote:
    > On Mon, 2009-10-19 at 11:49 +0200, Tobi Oetiker wrote:
    > > I have updated a fileserver to 2.6.31 today and I see page
    > > allocation failures from several parts of the system ... mostly nfs though ... (it is a nfs server).
    > > So I guess the problem must be quite generic:
    >
    > Yup, it almost certainly is. Does this patch help?
    >
    > http://lkml.org/lkml/2009/10/16/89

    This patch seems to help in some cases. Before applying this patch I
    was able to trigger alloc failures on different machine by booting
    kernel with "mem=256MB" and doing:

    $ gitk on-full-tree &
    # rmmod e100
    ... wait for few MBs in swap
    # modprobe e100; ifup --force ethX

    So here this patch helped -- with it, I was unable to trigger page
    allocation failures (testing was short, tough). However, as I said
    here[1], I applied both of Mel's patches (including this one) and that
    didn't help my orginal issue (failures after suspend).

    [1] http://lkml.org/lkml/2009/10/17/109

    Thanks.


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