From: Peter Zijlstra <peterz@infradead.org>
To: David Woodhouse <dwmw2@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
kay.sievers@vrfy.org, folkert@vanheusden.com, jacmet@sunsite.dk,
linux-kernel@vger.kernel.org
Subject: Re: bdi: register sysfs bdi device only once per queue
Date: Fri, 07 Nov 2008 15:11:18 +0100 [thread overview]
Message-ID: <1226067078.2697.36.camel@twins> (raw)
In-Reply-To: <1225923040.3882.0.camel@macbook.infradead.org>
On Wed, 2008-11-05 at 23:10 +0100, David Woodhouse wrote:
> On Wed, 2008-11-05 at 12:10 -0800, Andrew Morton wrote:
> > > > Devices which share the same queue, like floppies and mtd devices,
> > > > get registered multiple times in the bdi interface, but bdi accounts
> > > > only the last registered device of the devices sharing one queue.
> > >
> > > David, is there any reason the mtd devices do this?
> >
> > [tap tap - is this thing turned on?]
>
> No particular reason. It's been done that way since the dawn of time,
> when it was perfectly normal. Nobody's yet bothered to change that, when
> changing the rules.
It looks to be the consequence of using one queue for a bunch of devices
(which seems odd), and its all tied into this translation layer which
starts a thread per queue.
Do you want me to rip this up and make it do one queue/thread per
device? - seems invasive...
prev parent reply other threads:[~2008-11-07 14:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-03 15:53 bdi: register sysfs bdi device only once per queue Kay Sievers
2008-11-03 16:08 ` Peter Zijlstra
2008-11-05 20:10 ` Andrew Morton
2008-11-05 22:10 ` David Woodhouse
2008-11-05 22:21 ` Peter Zijlstra
2008-11-07 14:11 ` Peter Zijlstra [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1226067078.2697.36.camel@twins \
--to=peterz@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=dwmw2@infradead.org \
--cc=folkert@vanheusden.com \
--cc=jacmet@sunsite.dk \
--cc=kay.sievers@vrfy.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.