Re: [Xen-devel] [PATCH for-4.6 02/13] libxl: properly clean up array in libxl_list_cpupool failure path

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

On Thu, 2015-07-23 at 10:22 +0100, Ian Campbell wrote:
> On Thu, 2015-07-23 at 08:59 +0100, Wei Liu wrote:

> > There is change of behaviour. Previously if memory allocation fails 
> > the
> > said function returns NULL. Now memory allocation failure is fatal. 
> > This
> > is in line with how we deal with memory allocation failure in other
> > places in libxl though.
> 
> I think this function would benefit from making the out: label be the
> error path and the success case just a return ptr (just before the
> label).
> 
> Then your error handling for cpupool_info would become
>             libxl_cpupoolinfo_dispose(&info);
>             if (errno != ENOENT) goto out;
>             break;
> 
> and the "if (failed)" block would be at the out label (without the
> iff).
> 
I was about to give my Reviewed-by, but yes, I like Ian's suggestion
too.

In any case, apart from how error handling is done, I think this patch
is fine, as far as dealing with cpupools goes.

Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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