From 468d01bec544286bb5283f012b95b5b84636565b Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 2 Feb 2017 11:40:15 -0800 Subject: [PATCH] types: Update obsolete callback_head comment The comment header for callback_head (and thus for rcu_head) states that the bottom two bits of a pointer to these structures must be zero. This is obsolete: The new requirement is that only the bottom bit need be zero. This commit therefore updates this comment. Signed-off-by: Paul E. McKenney --- include/linux/types.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/types.h b/include/linux/types.h index 1e7bd24848fc..258099a4ed82 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -209,7 +209,7 @@ struct ustat { * naturally due ABI requirements, but some architectures (like CRIS) have * weird ABI and we need to ask it explicitly. * - * The alignment is required to guarantee that bits 0 and 1 of @next will be + * The alignment is required to guarantee that bit 0 of @next will be * clear under normal conditions -- as long as we use call_rcu(), * call_rcu_bh(), call_rcu_sched(), or call_srcu() to queue callback. * -- 2.20.1