From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Thu, 5 Dec 2013 22:56:54 +0000 (-0800)
Subject: documentation: Document call_rcu() safety mechanisms and limitations
X-Git-Tag: v3.15-rc1~183^2~1^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e67669678d2d51b2bcf0411aeb629b4353a9880;p=pandora-kernel.git

documentation: Document call_rcu() safety mechanisms and limitations

The call_rcu() family of primitives will take action to accelerate
grace periods when the number of callbacks pending on a given CPU
becomes excessive.  Although this safety mechanism can be useful,
it is no substitute for users of call_rcu() having rate-limit controls
in place.  This commit adds this nuance to the documentation.

Reported-by: "Michael S. Tsirkin" <mst@redhat.com>
Reported-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
---

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