From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Fri, 23 Dec 2011 19:28:51 +0000 (+0000)
Subject: netem: dont call vfree() under spinlock and BH disabled
X-Git-Tag: v3.2~24^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb52c7acf871537a468433775151339f783d2e8c;p=pandora-kernel.git

netem: dont call vfree() under spinlock and BH disabled

commit 6373a9a286 (netem: use vmalloc for distribution table) added a
regression, since vfree() is called while holding a spinlock and BH
being disabled.

Fix this by doing the pointers swap in critical section, and freeing
after spinlock release.

Also add __GFP_NOWARN to the kmalloc() try, since we fallback to
vmalloc().

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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