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    SubjectRe: [PATCH 09/17] netvm: Allow the use of __GFP_MEMALLOC by specific sockets
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    From: Mel Gorman <mgorman@suse.de>
    Date: Thu, 10 May 2012 14:45:02 +0100

    > Allow specific sockets to be tagged SOCK_MEMALLOC and use
    > __GFP_MEMALLOC for their allocations. These sockets will be able to go
    > below watermarks and allocate from the emergency reserve. Such sockets
    > are to be used to service the VM (iow. to swap over). They must be
    > handled kernel side, exposing such a socket to user-space is a bug.
    >
    > There is a risk that the reserves be depleted so for now, the
    > administrator is responsible for increasing min_free_kbytes as
    > necessary to prevent deadlock for their workloads.
    >
    > [a.p.zijlstra@chello.nl: Original patches]
    > Signed-off-by: Mel Gorman <mgorman@suse.de>

    After sk_allocation() is adjusted to be sk_gfp_atomic() as I suggested
    in my feedback for patch #8, this is fine.


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