Thanks for your advice.
The rescuer null pointer is intentionally passed by a data structure?
and also I read the code of workqueue again, when destroy_workqueue is
called, after "wq->rescuer = NULL" was executed, The scenario described
below does not happen
"if non-null pointers (according to valid rescuer objects) are
occasionally passed by the corresponding data structure member
for the callback function "rcu_free_wq"."
On 5/25/20 6:40 PM, Markus Elfring wrote:
I see, kfree does nothing with null pointers and direct return.
but again kfree is not a good suggestion.
I have got the impression that the implementation detail is important here
if non-null pointers (according to valid rescuer objects) are occasionally
passed by the corresponding data structure member for the callback
function “rcu_free_wq”.
Can another clarification attempt reduce unwanted confusion for this patch review?
Regards,
Markus
