From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 14 Oct 2009 08:19:46 +0000 (-0700)
Subject: net: Remove BKL from tun
X-Git-Tag: v2.6.33-rc1~388^2~803
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=deed49fbb68d7d07ec6c3dfd06bffc74e9abc6fa;p=pandora-kernel.git

net: Remove BKL from tun

The lock_kernel/unlock_kernel() in cycle_kernel_lock() which is called
in tun_chr_open() is not serializing against anything and safe to
remove.

tun_chr_fasync() is serialized by get/put_tun() and fasync_helper()
has no dependency on BKL. The modification of tun->flags is racy with
and without the BKL so removing it does not make it worse.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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