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Date: Wed, 16 Nov 2011 09:12:10 +0200 (EET)
From: Pekka Enberg <penberg@kernel.org>
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To: Cong Wang <amwang@redhat.com>
cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
        Hugh Dickins <hughd@google.com>, linux-mm@kvack.org,
        kay.sievers@vrfy.org
Subject: Re: [Patch] tmpfs: add fallocate support
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On Wed, 16 Nov 2011, Cong Wang wrote:
>> What's the use case for this?
>
> Systemd needs it, see http://lkml.org/lkml/2011/10/20/275.
> I am adding Kay into Cc.

The post doesn't mention why it needs it, though.

 			Pekka