netdev - Re: [PATCH net-next] tun: Report "persist" flag to userspace

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Message-Id: <20130612.150744.527671463418307561.davem@davemloft.net>
Date:	Wed, 12 Jun 2013 15:07:44 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	xemul@...allels.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] tun: Report "persist" flag to userspace

From: Pavel Emelyanov <xemul@...allels.com>
Date: Tue, 11 Jun 2013 14:41:24 +0400

> The TUN_PERSIST flag is not reported at all -- both TUNGETIFF, and sysfs
> "flags" attribute skip one. Knowing whether a device is persistent or not
> is critical for checkpoint-restore, thus I propose to add the read-only
> IFF_PERSIST one for this.
> 
> Setting this new IFF_PERSIST is hardly possible, as TUNSETIFF doesn't check
> for unknown flags being zero and thus there can be trash.
> 
> Signed-off-by: Pavel Emelyanov <xemul@...allels.com>

Applied, thanks.
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