linux-kernel - Re: [0/2] powerpc/powernv/vas: Adjustments for two function implementations

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Date: Tue, 16 Apr 2024 21:11:15 +1000
From: Michael Ellerman <mpe@...erman.id.au>
To: Markus Elfring <Markus.Elfring@....de>, linuxppc-dev@...ts.ozlabs.org,
 kernel-janitors@...r.kernel.org, "Aneesh Kumar K.V"
 <aneesh.kumar@...nel.org>, Christophe Leroy <christophe.leroy@...roup.eu>,
 "Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>, Nicholas Piggin
 <npiggin@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>, cocci@...ia.fr
Subject: Re: [0/2] powerpc/powernv/vas: Adjustments for two function
 implementations

Markus Elfring <Markus.Elfring@....de> writes:
>> A few update suggestions were taken into account
>> from static source code analysis.
>>
>> Markus Elfring (2):
>
> I would appreciate a bit more information about the reasons
> why this patch series was rejected.
>
>
>>   One function call less in vas_window_alloc() after error detection
>
> https://patchwork.ozlabs.org/project/linuxppc-dev/patch/1f1c21cf-c34c-418c-b00c-8e6474f12612@web.de/

It introduced a new goto and label to avoid a kfree(NULL) call, but
kfree() explicitly accepts NULL and handles it. So it complicates the
source code for no gain.

>>   Return directly after a failed kasprintf() in map_paste_region()
>
> https://patchwork.ozlabs.org/project/linuxppc-dev/patch/f46f04bc-613c-4e98-b602-4c5120556b09@web.de/

Basically the same reasoning. And it also changes the function from
having two return paths (success and error), to three.

cheers