Re: [PATCH V4 1/3] livepatch: remove 'struct completion finish' from klp_patch

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On Tue, 2 Nov 2021, Ming Lei wrote:

> The completion finish is just for waiting release of the klp_patch
> object, then releases module refcnt. We can simply drop the module
> refcnt in the kobject release handler of klp_patch.
> 
> This way also helps to support allocating klp_patch from heap.
> 
> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
> ---
>  include/linux/livepatch.h |  1 -
>  kernel/livepatch/core.c   | 12 +++---------
>  2 files changed, 3 insertions(+), 10 deletions(-)
> 
> diff --git a/include/linux/livepatch.h b/include/linux/livepatch.h
> index 2614247a9781..9712818997c5 100644
> --- a/include/linux/livepatch.h
> +++ b/include/linux/livepatch.h
> @@ -170,7 +170,6 @@ struct klp_patch {
>  	bool enabled;
>  	bool forced;
>  	struct work_struct free_work;
> -	struct completion finish;
>  };
>  
>  #define klp_for_each_object_static(patch, obj) \

Petr pointed out the main problem. I'll just add that if it comes to it, 
you could also remove the inclusion of completion.h header file and a 
description of finish struct member.

Miroslav



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