From: Paolo Bonzini <pbonzini@redhat.com>
Date: Thu, 9 Jun 2011 13:32:58 +0000 (-0400)
Subject: call_rcu: drop mutex
X-Git-Tag: v0.6.0~29
X-Git-Url: https://git.liburcu.org/?a=commitdiff_plain;ds=sidebyside;h=2870aa1ec4cc2472ec09f72e2d758bc8d4739181;hp=2870aa1ec4cc2472ec09f72e2d758bc8d4739181;p=urcu.git

call_rcu: drop mutex

The mutex is being used only to protect OR accesses to the flags.
Just use atomic operations for that.

[ Edit: this also fixes busy-looping on flags that were previously read
without volatile access, which could lead to never-ending loop given the
appropriate set of compiler optimisations. ]

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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