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From: johnb@codexdigital.com (John Beard)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Block device driver: how to terminate the block device if media disappears?
Date: Mon, 07 Jan 2013 10:49:31 +0000	[thread overview]
Message-ID: <50EAA83B.7010004@codexdigital.com> (raw)
In-Reply-To: <CALF0-+XuNEqJgSxqzNjSZrBFS+cEVtGHsAoaiYKeTU56Fb+A9g@mail.gmail.com>

On 21/12/12 18:23, Ezequiel Garcia wrote:

> On Thu, Dec 13, 2012 at 12:31 PM, John Beard <johnb@codexdigital.com> wrote:
>>
>> What is the right way to terminate requests and delete the gendisk in
>> the case of physically vanished PCI devices (or even devices in general)?
>>
> 
> There are several block driver examples in drivers/block.
> Or you might want to take a loot at mtdblock.c, or perhaps
> this simple ubiblock implementation:
> 
> http://lwn.net/Articles/525957/

Thanks, Ezequiel - sorry for the delay, I haven't had a chance to touch
my development computer over the break. The workqueue-based approach
from ubiblock.c seems to have solved the problem and the device can now
shut down happily once the request queue is emptied in the submit_req
call following device removal.

Thanks again for your help!

John Beard

  reply	other threads:[~2013-01-07 10:49 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-13 15:31 Block device driver: how to terminate the block device if media disappears? John Beard
2012-12-21 18:23 ` Ezequiel Garcia
2013-01-07 10:49   ` John Beard [this message]
2013-01-12 17:39     ` Ezequiel Garcia
2013-01-12 17:56       ` anish kumar

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