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(parent: bf33aae) | patch
call_rcu: drop mutex
authorPaolo Bonzini <pbonzini@redhat.com>
Thu, 9 Jun 2011 13:32:58 +0000 (09:32 -0400)
committerMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Thu, 9 Jun 2011 13:32:58 +0000 (09:32 -0400)
commit2870aa1ec4cc2472ec09f72e2d758bc8d4739181
tree9275061e2d440ab560afd2be7fc06267ea912aadtree | snapshot
parentbf33aaea06cbf8257cc49c38abca6d26c0c31c78commit | diff
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>
urcu-call-rcu-impl.h diff | blob | blame | history
Userspace RCU (urcu) for Linux
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