linux-kernel - Re: [PATCH] scsi: sd: Make protection lookup tables static

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Date:   Mon, 07 Jan 2019 08:57:23 -0800
From:   Bart Van Assche <bvanassche@....org>
To:     John Garry <john.garry@...wei.com>, jejb@...ux.vnet.ibm.com,
        martin.petersen@...cle.com
Cc:     linuxarm@...wei.com, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org
Subject: Re: [PATCH] scsi: sd: Make protection lookup tables static

On Mon, 2019-01-07 at 22:41 +0800, John Garry wrote:
> Currently the protection lookup tables in sd_prot_flag_mask() and
> sd_prot_op() are declared non-static. As such, they will be rebuilt for
> each respective function call.
> 
> Optimise by making them static.
> 
> This saves ~100B object code for sd.c:
> 
> Before:
>    text	   data	    bss	    dec	    hex	filename
>   25403	   1024	     16	  26443	   674b	drivers/scsi/sd.o
> 
> After:
>   text	   data	    bss	    dec	    hex	filename
>   25299	   1024	     16	  26339	   66e3	drivers/scsi/sd.o

Since the sd_prot_op() function only has a single caller, please move it from sd.h
into sd.c.

Thanks,

Bart.