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Date:      Wed, 13 Jun 2018 13:35:48 -0600
From:      Ian Lepore <ian@freebsd.org>
To:        Warner Losh <imp@bsdimp.com>, Ravi Pokala <rpokala@freebsd.org>
Cc:        Warner Losh <imp@freebsd.org>, src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r335066 - in head/sys: kern sys
Message-ID:  <1528918548.12122.74.camel@freebsd.org>
In-Reply-To: <CANCZdfoNA5vZt7zX=hx4mxn8c5LSZpRcy8%2B6OhtDjx9%2BHsX%2BeQ@mail.gmail.com>
References:  <201806131648.w5DGm7i4037714@repo.freebsd.org> <7D695D8A-D273-4914-9980-F4BD096A80A2@panasas.com> <CANCZdfoNA5vZt7zX=hx4mxn8c5LSZpRcy8%2B6OhtDjx9%2BHsX%2BeQ@mail.gmail.com>

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On Wed, 2018-06-13 at 13:22 -0600, Warner Losh wrote:
> So we implement the elevator algorithm, but limit the number of requests
> that we can put in each 'car'. Elevators themselves are sometimes call
> 'cars' for reasons I have no clue about.

An "elevator" is an entire system for moving something vertically. It
includes a lift mechanism, guide system (rails, etc), control
mechanisms, etc. When the portion of the system that moves is an
enclosed space (not a simple platform or bucket) which carries people
and/or goods, that part is called a "carriage" or "car".

-- Ian (who was oddly fascinated by elevators as a child)



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