[CRIU] [PATCH] aio: Add plugin for waiting AIO in-flight reqs

[Cyrill Gorcunov]

On Tue, Apr 05, 2016 at 01:10:50PM +0300, Kirill Tkhai wrote:
> This is possibility to wait AIO in-flight reqs before
> we collect AIO rings info.
> 
> Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
...
>  
> -int parasite_collect_aios(struct parasite_ctl *ctl, struct vm_area_list *vmas)
> +int parasite_collect_aios(struct parasite_ctl *ctl, pid_t pid, struct vm_area_list *vmas)
>  {
>  	struct vma_area *vma;
>  	struct parasite_check_aios_args *aa;
>  	struct parasite_aio *pa;
> -	int i;
> +	int i, ret;
>  
>  	if (!vmas->nr_aios)
>  		return 0;
> @@ -106,6 +107,14 @@ int parasite_collect_aios(struct parasite_ctl *ctl, struct vm_area_list *vmas)
>  	}
>  	aa->nr_rings = vmas->nr_aios;
>  
> +	ret = run_plugins(AIO_WAIT_REQS, pid);
> +	if (ret == -ENOTSUP) {
> +		pr_info_once("AIO_WAIT_REQS plugin was not found\n");
> +	} else if (ret < 0) {
> +		pr_err("Can't execute AIO_WAIT_REQS plugin: ret=%d\n", ret);
> +		return -1;
> +	}
> +

What about restore stage, we won't need plugin there?

	Cyrill