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From: David Miller <davem@davemloft.net>
To: pagupta@redhat.com
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	jasowang@redhat.com, mst@redhat.com, dgibson@redhat.com,
	vfalico@gmail.com, edumazet@google.com, vyasevic@redhat.com,
	hkchu@google.com, wuzhy@linux.vnet.ibm.com, xemul@parallels.com,
	therbert@google.com, bhutchings@solarflare.com, xii@google.com,
	stephen@networkplumber.org, jiri@resnulli.us,
	sergei.shtylyov@cogentembedded.com
Subject: Re: [PATCH net-net 0/4] Increase the limit of tuntap queues
Date: Wed, 19 Nov 2014 15:16:28 -0500 (EST)	[thread overview]
Message-ID: <20141119.151628.768548269128919029.davem@davemloft.net> (raw)
In-Reply-To: <1416327778-17716-1-git-send-email-pagupta@redhat.com>

From: Pankaj Gupta <pagupta@redhat.com>
Date: Tue, 18 Nov 2014 21:52:54 +0530

> - Accept maximum number of queues as sysctl param so that any user space 
>   application like libvirt can use this value to limit number of queues. Also
>   Administrators can specify maximum number of queues by updating this sysctl
>   entry.

This is the only part I don't like.

Just let whoever has privileges to configure the tun device shoot
themselves in the foot if they want to by configuring "too many"
queues.

If the virtual entity runs itself out of resources by doing something
stupid, it's purely their problem.

  parent reply	other threads:[~2014-11-19 20:16 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-18 16:22 [PATCH net-net 0/4] Increase the limit of tuntap queues Pankaj Gupta
2014-11-18 16:22 ` [PATCH net-next 1/4] net: allow large number of rx queues Pankaj Gupta
2014-11-18 20:29   ` Cong Wang
2014-11-20 16:31     ` Pankaj Gupta
2014-11-18 16:22 ` [PATCH net-next 2/4] tuntap: Accept tuntap maximum number of queues as sysctl Pankaj Gupta
2014-11-18 16:22 ` [PATCH net-next 3/4] tuntap: reduce the size of tun_struct by using flex array Pankaj Gupta
2014-11-18 16:22 ` [PATCH net-next 4/4] tuntap: Increase the number of queues in tun Pankaj Gupta
2014-11-19  1:43 ` [PATCH net-net 0/4] Increase the limit of tuntap queues Alexei Starovoitov
2014-11-19 20:16 ` David Miller [this message]
2014-11-19 20:44   ` Michael S. Tsirkin
2014-11-23  5:22     ` Pankaj Gupta
2014-11-23 10:46     ` Michael S. Tsirkin
2014-11-23 18:43       ` David Miller
2014-11-23 20:30         ` Michael S. Tsirkin
2014-11-24  1:23           ` David Miller
2014-11-24  8:02             ` Michael S. Tsirkin
2014-11-24 14:28               ` Pankaj Gupta
2014-11-24  3:23       ` Jason Wang
2014-11-24  7:55         ` Michael S. Tsirkin

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