linux-kernel - Re: [PATCH] scsi: virtio_scsi: Remove unnecessary condition checks

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Message-ID: <072edd61-9b00-4c63-804f-e98bf271b683@web.de>
Date:   Thu, 9 Jul 2020 22:55:46 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Xianting Tian <xianting_tian@....com>,
        linux-scsi@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
        "James E. J. Bottomley" <jejb@...ux.ibm.com>,
        Jason Wang <jasowang@...hat.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>
Subject: Re: [PATCH] scsi: virtio_scsi: Remove unnecessary condition checks

>>> +	mempool_destroy(virtscsi_cmd_pool);
>>> +	virtscsi_cmd_pool = NULL;
>>> +	kmem_cache_destroy(virtscsi_cmd_cache);
>>> +	virtscsi_cmd_cache = NULL;
>>>  	return ret;
>>>  }
>>
>> How do you think about to add a jump target so that the execution
>> of a few statements can be avoided according to a previous
>> null pointer check?
>
> The point of the patch is precisely to simplify the code,

I propose another bit of fine-tuning there.


> executing a couple more instruction is not an issue.

Can an additional label help here besides a possible identifier renaming?

Regards,
Markus