Commit-ID: e3e740544173ef0dd8bffbf158182a7748e6c678 Gitweb: https://git.kernel.org/tip/e3e740544173ef0dd8bffbf158182a7748e6c678 Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> AuthorDate: Wed, 7 Nov 2018 13:53:34 -0800 Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> CommitDate: Sat, 1 Dec 2018 12:38:48 -0800 percpu-rwsem: Replace synchronize_sched() with synchronize_rcu() Now that synchronize_rcu() waits for preempt-disable regions of code as well as RCU read-side critical sections, synchronize_sched() can be replaced by synchronize_rcu(). This commit therefore makes this change, even though it is but a comment. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> Cc: Dennis Zhou <dennis@xxxxxxxxxx> Cc: Christoph Lameter <cl@xxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> --- include/linux/percpu-rwsem.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h index 79b99d653e03..71b75643c432 100644 --- a/include/linux/percpu-rwsem.h +++ b/include/linux/percpu-rwsem.h @@ -41,7 +41,7 @@ static inline void percpu_down_read_preempt_disable(struct percpu_rw_semaphore * * cannot both change sem->state from readers_fast and start checking * counters while we are here. So if we see !sem->state, we know that * the writer won't be checking until we're past the preempt_enable() - * and that one the synchronize_sched() is done, the writer will see + * and that once the synchronize_rcu() is done, the writer will see * anything we did within this RCU-sched read-size critical section. */ __this_cpu_inc(*sem->read_count);
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