Re: [PATCH 13/14] multipath: use update_multipath_table/status in, check_useable_paths

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On Wed, Sep 02, 2020 at 03:25:28PM +0800, lixiaokeng wrote:
> The return values of dm_get_map, disassemble_map,dm_get_status
> and disassemble_status in check_usable_paths were not checked.
> Use update_multipath_table/status to instead of them.
> 
Reviewed-by: Benjamin Marzinski <bmarzins@xxxxxxxxxx>
> Signed-off-by: Lixiaokeng <lixiaokeng@xxxxxxxxxx>
> Signed-off-by: Zhiqiang Liu <liuzhiqiang26@xxxxxxxxxx>
> Signed-off-by: Linfeilong <linfeilong@xxxxxxxxxx>
> ---
>  multipath/main.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/multipath/main.c b/multipath/main.c
> index d227e0b3..9e920d89 100644
> --- a/multipath/main.c
> +++ b/multipath/main.c
> @@ -251,7 +251,6 @@ static int check_usable_paths(struct config *conf,
>  	struct path *pp;
>  	char *mapname;
>  	vector pathvec = NULL;
> -	char params[PARAMS_SIZE], status[PARAMS_SIZE];
>  	dev_t devt;
>  	int r = 1, i, j;
> 
> @@ -285,11 +284,9 @@ static int check_usable_paths(struct config *conf,
>  	if (mpp == NULL)
>  		goto free;
> 
> -	dm_get_map(mpp->alias, &mpp->size, params);
> -	dm_get_status(mpp->alias, status);
> -	disassemble_map(pathvec, params, mpp);
> -	update_pathvec_from_dm(pathvec, mpp, 0);
> -	disassemble_status(status, mpp);
> +	if (update_multipath_table(mpp, pathvec, 0) != DMP_OK ||
> +		    update_multipath_status(mpp) != DMP_OK)
> +		    goto free;
> 
>  	vector_foreach_slot (mpp->pg, pg, i) {
>  		vector_foreach_slot (pg->paths, pp, j) {
> -- 

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