linux-kernel - Re: [PATCH] scsi: advansys: Replace zero-length array with flexible-array member

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Message-ID: <ceff9657-53f1-31a5-dfe9-94bf0dd00de0@embeddedor.com>
Date:   Thu, 13 Feb 2020 00:04:01 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Hannes Reinecke <hare@...e.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: advansys: Replace zero-length array with
 flexible-array member



On 2/12/20 19:14, Matthew Wilcox wrote:
> On Wed, Feb 12, 2020 at 06:02:11PM -0600, Gustavo A. R. Silva wrote:
>> Also, notice that, dynamic memory allocations won't be affected by
>> this change:
> 
> Shouldn't you also convert this:
>                 asc_sg_head = kzalloc(sizeof(asc_scsi_q->sg_head) +
>                         use_sg * sizeof(struct asc_sg_list), GFP_ATOMIC);
> to use struct_size()?
> 

It's not a requirement to do that prior to applying the change proposed by
this patch.

Thanks
--
Gustavo