Commit-ID: 468d01bec544286bb5283f012b95b5b84636565b
Gitweb: http://git.kernel.org/tip/468d01bec544286bb5283f012b95b5b84636565b
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Thu, 2 Feb 2017 11:40:15 -0800
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Wed, 19 Apr 2017 09:29:17 -0700
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is obsolete: The new requirement is that only the bottom bit need be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 <paulmck@xxxxxxxxxxxxxxxxxx>
---
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 1e7bd24..258099a 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.
*
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