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Re: [Qemu-devel] [PULL 4/7] hostmem-file: add the 'pmem' option


From: Peter Maydell
Subject: Re: [Qemu-devel] [PULL 4/7] hostmem-file: add the 'pmem' option
Date: Fri, 24 Aug 2018 17:57:06 +0100

On 24 August 2018 at 17:53, Michael S. Tsirkin <address@hidden> wrote:
> On Fri, Aug 24, 2018 at 04:13:18PM +0100, Peter Maydell wrote:
>> object_get_canonical_path_component() returns a string which
>> must be freed using g_free().

> Like the following? Junyan, could you pls try this one and confirm?
>
> Signed-off-by: Michael S. Tsirkin <address@hidden>
>
> diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
> index 2476dcb435..d88125b86e 100644
> --- a/backends/hostmem-file.c
> +++ b/backends/hostmem-file.c
> @@ -154,11 +154,14 @@ static void file_memory_backend_set_pmem(Object *o, 
> bool value, Error **errp)
>  #ifndef CONFIG_LIBPMEM
>      if (value) {
>          Error *local_err = NULL;
> +        char *path = object_get_canonical_path_component(o);
> +
>          error_setg(&local_err,
>                     "Lack of libpmem support while setting the 'pmem=on'"
>                     " of %s '%s'. We can't ensure data persistence.",
>                     object_get_typename(o),
> -                   object_get_canonical_path_component(o));
> +                   );
> +        g_free(path);
>          error_propagate(errp, local_err);
>          return;

Yep, like that (though I would put the closing ");" on
the line with object_get_typename() and delete the trailing comma).

thanks
-- PMM



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