Date: Thu, 17 May 2012 16:11:09 -0400 (EDT)
Message-Id: <20120517.161109.1822721470409742316.davem@davemloft.net>
To: mgorman@suse.de
Cc: akpm@linux-foundation.org, linux-mm@kvack.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, neilb@suse.de, a.p.zijlstra@chello.nl,
        michaelc@cs.wisc.edu, emunson@mgebm.net
Subject: Re: [PATCH 09/17] netvm: Allow the use of __GFP_MEMALLOC by
 specific sockets
From: David Miller <davem@davemloft.net>
In-Reply-To: <1337266231-8031-10-git-send-email-mgorman@suse.de>
References: <1337266231-8031-1-git-send-email-mgorman@suse.de>
	<1337266231-8031-10-git-send-email-mgorman@suse.de>
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From: Mel Gorman <mgorman@suse.de>
Date: Thu, 17 May 2012 15:50:23 +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>

Acked-by: David S. Miller <davem@davemloft.net>
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