srcu: Explain the reason behind the read side critical section on GP start

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Tell about the need to protect against concurrent updaters who may
overflow the GP counter behind the current update.

Reported-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Frederic Weisbecker 2022-10-13 19:22:43 +02:00 • committed by Paul E. McKenney

parent 6b77bb9b99

commit ae3c070616

1 changed files with 5 additions and 0 deletions

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kernel/rcu/srcutree.c

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