synchronize_rcu_bh
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## Name

synchronize_rcu_bh — wait until an rcu_bh grace period has elapsed.

## Synopsis

`void synchronize_rcu_bh (` | void`)`;

## Arguments

`void`

  no arguments

## Description

Control will return to the caller some time after a full rcu_bh grace period has elapsed, in other words after all currently executing rcu_bh read-side critical sections have completed. RCU read-side critical sections are delimited by `rcu_read_lock_bh` and `rcu_read_unlock_bh`, and may be nested.

See the description of `synchronize_sched` for more detailed information on memory ordering guarantees.

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