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Subject: Re: [PATCH v1] scsi: Don't select SCSI_PROC_FS by default
To:     Bart Van Assche <bvanassche@acm.org>, dgilbert@interlog.com,
        Marc Gonzalez <marc.w.gonzalez@free.fr>,
        James Bottomley <jejb@linux.ibm.com>,
        Martin Petersen <martin.petersen@oracle.com>
Cc:     SCSI <linux-scsi@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Christoph Hellwig <hch@lst.de>
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From:   Hannes Reinecke <hare@suse.de>
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Message-ID: <719dd2ea-b5e5-c694-36ef-9513ed0c2d06@suse.de>
Date:   Fri, 5 Jul 2019 09:18:04 +0200
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On 6/18/19 5:28 AM, Bart Van Assche wrote:
> On 6/17/19 5:35 PM, Douglas Gilbert wrote:
>> For sg3_utils:
>>
>> $ find . -name '*.c' -exec grep "/proc/scsi" {} \; -print
>> static const char * proc_allow_dio = "/proc/scsi/sg/allow_dio";
>> ./src/sg_read.c
>> static const char * proc_allow_dio = "/proc/scsi/sg/allow_dio";
>> ./src/sgp_dd.c
>> static const char * proc_allow_dio = "/proc/scsi/sg/allow_dio";
>> ./src/sgm_dd.c
>> static const char * proc_allow_dio = "/proc/scsi/sg/allow_dio";
>> ./src/sg_dd.c
>>                  "'echo 1 > /proc/scsi/sg/allow_dio'\n", q_len,
>> dirio_count);
>> ./testing/sg_tst_bidi.c
>> static const char * proc_allow_dio = "/proc/scsi/sg/allow_dio";
>> ./examples/sgq_dd.c
>>  
>> That is 6 (not 38) by my count.
> 
> Hi Doug,
> 
> This is the command I ran:
> 
> $ git grep /proc/scsi | wc -l
> 38
> 
> I think your query excludes scripts/rescan-scsi-bus.sh.
> 
You can ignore rescan-scsi-bus.sh.
It's keeping /proc access as a fallback option only (as it's meant to be
kernel-independent); it will be using /sys per default and will happily
work without /proc/scsi.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@suse.de			               +49 911 74053 688
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