Commit c6cd2e01 authored by Will Deacon's avatar Will Deacon
Browse files

include/linux: Remove smp_read_barrier_depends() from comments 



smp_read_barrier_depends() doesn't exist any more, so reword the two
comments that mention it to refer to "dependency ordering" instead.

Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: default avatarPaul E. McKenney <paulmck@kernel.org>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 628fd556

include/linux/percpu-refcount.h

+1 −1
Original line number Diff line number Diff line
@@ -155,7 +155,7 @@ static inline bool __ref_is_percpu(struct percpu_ref *ref, 
	 * between contaminating the pointer value, meaning that

	 * READ_ONCE() is required when fetching it.

	 *

	 * The smp_read_barrier_depends() implied by READ_ONCE() pairs

	 * The dependency ordering from the READ_ONCE() pairs

	 * with smp_store_release() in __percpu_ref_switch_to_percpu().

	 */

	percpu_ptr = READ_ONCE(ref->percpu_count_ptr);

include/linux/ptr_ring.h

+1 −1
Original line number Diff line number Diff line
@@ -107,7 +107,7 @@ static inline int __ptr_ring_produce(struct ptr_ring *r, void *ptr) 
		return -ENOSPC;



	/* Make sure the pointer we are storing points to a valid data. */

	/* Pairs with smp_read_barrier_depends in __ptr_ring_consume. */

	/* Pairs with the dependency ordering in __ptr_ring_consume. */

	smp_wmb();



	WRITE_ONCE(r->queue[r->producer++], ptr);

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