linux-kernel - Re: [ofa-general] Re: [GIT PULL] please pull ummunotify

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Message-ID: <adazl8td35u.fsf@cisco.com>
Date:	Thu, 17 Sep 2009 08:03:25 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
	Paul Mackerras <paulus@...ba.org>,
	Anton Blanchard <anton@...ba.org>,
	general@...ts.openfabrics.org, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, Ingo Molnar <mingo@...e.hu>
Subject: Re: [ofa-general] Re: [GIT PULL] please pull ummunotify


 > Hmm, or are you saying you can only get 1 event per registered range and
 > allocate the thing on registration? That'd need some registration limit
 > to avoid DoS scenarios.

Yes, that's what I do.  You're right, I should add a limit... although
their are lots of ways for userspace to consume arbitrary amounts of
kernel resources already.

 - R.
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