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由 Paul E. McKenney 提交于
If a process invokes synchronize_srcu(), is delayed just the right amount of time, and thus does not sleep when waiting for the grace period to complete, there is no ordering between the end of the grace period and the code following the synchronize_srcu(). Similarly, there can be a lack of ordering between the end of the SRCU grace period and callback invocation. This commit adds the necessary ordering. Reported-by: NLance Roy <ldr709@gmail.com> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> [ paulmck: Further smp_mb() adjustment per email with Lance Roy. ]
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