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Date: Mon, 7 Nov 2011 02:31:27 -0500
From: Christoph Hellwig <hch@infradead.org>
To: Davidlohr Bueso <dave@gnu.org>
Cc: Hugh Dickins <hughd@google.com>,
        Lennart Poettering <lennart@poettering.net>,
        Andrew Morton <akpm@linux-foundation.org>,
        lkml <linux-kernel@vger.kernel.org>, linux-mm@kvack.org
Subject: Re: [RFC PATCH] tmpfs: support user quotas
Message-ID: <20111107073127.GA7410@infradead.org>
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On Sun, Nov 06, 2011 at 06:15:01PM -0300, Davidlohr Bueso wrote:
> From: Davidlohr Bueso <dave@gnu.org>
> 
> This patch adds a new RLIMIT_TMPFSQUOTA resource limit to restrict an individual user's quota across all mounted tmpfs filesystems.
> It's well known that a user can easily fill up commonly used directories (like /tmp, /dev/shm) causing programs to break through DoS.

Please jyst implement the normal user/group quota interfaces we use for other
filesystem.