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    SubjectRe: [ 36/40] mm: vmscan: convert global reclaim to per-memcg LRU lists
    On Mon, Jul 30, 2012 at 01:25:17AM +0100, Ben Hutchings wrote:
    > On Thu, 2012-07-26 at 14:29 -0700, Greg Kroah-Hartman wrote:
    > > From: Greg KH <gregkh@linuxfoundation.org>
    > >
    > > 3.0-stable review patch. If anyone has any objections, please let me know.
    > >
    > > ------------------
    > >
    > > From: Johannes Weiner <jweiner@redhat.com>
    > >
    > > commit b95a2f2d486d0d768a92879c023a03757b9c7e58 upstream - WARNING: this is a substitute patch.
    > >
    > > Stable note: Not tracked in Bugzilla. This is a partial backport of an
    > > upstream commit addressing a completely different issue
    > > that accidentally contained an important fix. The workload
    > > this patch helps was memcached when IO is started in the
    > > background. memcached should stay resident but without this patch
    > > it gets swapped. Sometimes this manifests as a drop in throughput
    > > but mostly it was observed through /proc/vmstat.
    > [...]
    > > The impact of the accidental fix is to make it harder for kswapd to force
    > > scan small targets by taking zone->all_unreclaimable into account. This
    > > patch is the closest equivalent available based on what is backported.
    > >
    > > ---
    > > mm/vmscan.c | 3 ++-
    > > 1 file changed, 2 insertions(+), 1 deletion(-)
    > [...]
    >
    > This is missing sign-offs.

    Oops, my fault, somehow they got lost, I'll go add them back (it's just
    Mel's and mine.)

    greg k-h


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