RCU_BARRIER(9)                            Driver Basics                            RCU_BARRIER(9)



NAME
       rcu_barrier - Wait until all in-flight call_rcu callbacks complete.

SYNOPSIS
       void rcu_barrier(void);

ARGUMENTS
       void
           no arguments

DESCRIPTION
       Note that this primitive does not necessarily wait for an RCU grace period to complete.
       For example, if there are no RCU callbacks queued anywhere in the system, then rcu_barrier
       is within its rights to return immediately, without waiting for anything, much less an RCU
       grace period.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                            RCU_BARRIER(9)