Re: [PATCH v2 3/4] Docs/RCU/rculist_nulls: Fix hlist_head field name of 'obj'

From: Paul E. McKenney
Date: Wed Jun 14 2023 - 12:37:28 EST


On Tue, Jun 13, 2023 at 06:24:33PM +0000, SeongJae Park wrote:
> The example code snippets on rculist_nulls.rst are assuming 'obj' to
> have the 'hlist_head' field named 'obj_node', but a sentence is wrongly
> mentioning 'obj->obj_node.next' as 'obj->obj_next'. Fix it.
>
> Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
> Reviewed-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
> ---
> Documentation/RCU/rculist_nulls.rst | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Documentation/RCU/rculist_nulls.rst b/Documentation/RCU/rculist_nulls.rst
> index 94a8bfe9f560..5cd6f3f8810f 100644
> --- a/Documentation/RCU/rculist_nulls.rst
> +++ b/Documentation/RCU/rculist_nulls.rst
> @@ -86,7 +86,7 @@ Quoting Corey Minyard::
> 2) Insertion algorithm
> ----------------------
>
> -We need to make sure a reader cannot read the new 'obj->obj_next' value
> +We need to make sure a reader cannot read the new 'obj->obj_node.next' value

I do like this being more specific, but if we are going do add this
level of specificity, shouldn't we refer to a definition of ->obj_node?

(I queued and pushed 1/4 and 2/4, thank you, and stopped here.)

Thanx, Paul

> and previous value of 'obj->key'. Otherwise, an item could be deleted
> from a chain, and inserted into another chain. If new chain was empty
> before the move, 'next' pointer is NULL, and lockless reader can not
> --
> 2.25.1
>