linux-kernel - Re: MD-RAID: Use seq_putc() in three status functions?

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Message-ID: <cb9beadc-3ea2-c09c-f621-a54cd73e3647@users.sourceforge.net>
Date:   Mon, 17 Oct 2016 16:30:43 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     Hannes Reinecke <hare@...e.de>, linux-raid@...r.kernel.org
Cc:     Bernd Petrovitsch <bernd@...rovitsch.priv.at>,
        Christoph Hellwig <hch@....de>,
        Guoqing Jiang <gqjiang@...e.com>, Jens Axboe <axboe@...com>,
        Joe Perches <coupons@...ches.com>,
        Mike Christie <mchristi@...hat.com>,
        Neil Brown <neilb@...e.com>, Shaohua Li <shli@...nel.org>,
        Tomasz Majchrzak <tomasz.majchrzak@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org, kbuild-all@...org,
        ltp@...ts.linux.it
Subject: Re: MD-RAID: Use seq_putc() in three status functions?

>> Am I the only software developer so far who would dare to reconsider
>> implementation details from three status functions?
>>
> No.

Thanks for this kind of promising feedback.

> But we're waiting for you showing is that it is an improvement.

Can this aspect also be clarified to some degree from a logical point of view?

* Would you really like to know under which circumstances data processing
  will be faster for a single character instead of using a string pointer
  and corresponding two characters?

* Do you care for a changed memory allocation characteristic?

* Will it occasionally be useful to avoid the storage for another string literal?

Regards,
Markus