From: Keir Fraser <keir@cohodata.com>
Date: Mon, 7 Apr 2014 13:28:52 +0000 (+0100)
Subject: call_rcu threads should clear their PAUSED flag when they unpause
X-Git-Tag: v0.9.0~94
X-Git-Url: https://git.lttng.org/?a=commitdiff_plain;ds=sidebyside;h=fc236e5edb83c2273e251be4cd659f47491cc90c;hp=fc236e5edb83c2273e251be4cd659f47491cc90c;p=userspace-rcu.git

call_rcu threads should clear their PAUSED flag when they unpause

And call_rcu_after_fork_parent should spin-wait on this.

Otherwise a second fork in the parent will see the PAUSED flags
already set and call_rcu_before_fork will not correctly wait for the
call_rcu threads to quiesce on this second occasion.

Fixes #786

Signed-off-by: Keir Fraser <keir@cohodata.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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