linux-kernel - Re: [PATCH] s390/netiucv: handle memory allocation failure in conn_action

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Message-ID: <6a4b95aa-f3d1-4da1-9017-976420af988b@linux.ibm.com>
Date: Tue, 25 Jun 2024 11:08:49 +0200
From: Alexandra Winter <wintera@...ux.ibm.com>
To: Yunseong Kim <yskelg@...il.com>, Markus Elfring <Markus.Elfring@....de>,
        linux-s390@...r.kernel.org, netdev@...r.kernel.org,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Christian Bornträger <borntraeger@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Thorsten Winkler <twinkler@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>
Cc: LKML <linux-kernel@...r.kernel.org>, MichelleJin <shjy180909@...il.com>
Subject: Re: [PATCH] s390/netiucv: handle memory allocation failure in
 conn_action_start()

On 24.06.24 20:00, Yunseong Kim wrote:
>> 5. Under which circumstances will development interests grow for increasing
>>    the application of scope-based resource management?
>>    https://elixir.bootlin.com/linux/v6.10-rc4/source/include/linux/cleanup.h#L8
> I am considering the environment in which the micro Virtual Machine
> operates and testing the s390 architecture with QEMU on my Mac M2 PC.
> I have been reviewing the code under the assumption of using a lot of
> memory and having many micro Virtual Machines loaded simultaneously.
> 
>> Regards,
>> Markus
> I really appreciate code review Markus!
> 
> 
> Best regards,
> 
> Yunseong Kim

(answering the V1 thread first. Content related comments will follow in V2 thread)

s390/netiucv is more or less in maintenance mode and we are not aware of any users.
The enterprise distros do not provide this module. Other iucv modules are more popular.
But afaiu we cannot remove the source code, unless we can prove that nobody is using it.
(Community advice is welcome).

Yunseong, I'd be interested in why you are running this module with QEMU on your
Mac PC?

Alexandra

BTW, your full name is shown in this reply, but not when you send
the patches. See:
https://lore.kernel.org/lkml/?q=s390%2Fnetiucv%3A+handle+memory+allocation+failure+in+conn_action_start%28%29
You may want to check your settings.