linux-kernel - Re: [Nbd] [PATCH 3/3]nbd: make nbd device wait for its users

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Message-ID: <CA+aCy1EQjrDM7ipYqTEg1NJvm6zwQZdaJARYkbiz_YWaC9E5cg@mail.gmail.com>
Date:	Sat, 25 Jun 2016 23:26:42 +0530
From:	Pranay Srivastava <pranjas@...il.com>
To:	Eric Blake <eblake@...hat.com>
Cc:	Markus Pargmann <mpa@...gutronix.de>,
	nbd-general@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	Wouter Verhelst <w@...r.be>
Subject: Re: [Nbd] [PATCH 3/3]nbd: make nbd device wait for its users

Hi Eric,

On Fri, Jun 24, 2016 at 7:12 PM, Eric Blake <eblake@...hat.com> wrote:
> On 06/24/2016 04:09 AM, Pranay Kr. Srivastava wrote:
>> When a timeout occurs or a recv fails, then
>> instead of abruplty killing nbd block device
>
> s/abruplty/abruptly/
>
>> wait for it's users to finish.
>
> s/it's/its/
>
>>
>> This is more required when filesystem(s) like
>> ext2 or ext3 don't expect their buffer heads to
>> disappear while the filesystem is mounted.
>>
>> Each open of a nbd device is refcounted, while
>> the userland program [nbd-client] doing the
>> NBD_DO_IT ioctl would now wait for any other users
>> of this device before invalidating the nbd device.
>>
>> A timedout or a disconnected device, if in use, can't
>> be used until it has been resetted. The resetting happens
>
> s/resetted/reset/
>

Thanks for going through the patch. Can I get some review on the
code as well so I can fix and resend that too, along with fixes of grammatical
errors.

>> when all tasks having this bdev open closes this bdev.
>>
>> Signed-off-by: Pranay Kr. Srivastava <pranjas@...il.com>
>> ---
>>  drivers/block/nbd.c | 124 ++++++++++++++++++++++++++++++++++++++++------------
>>  1 file changed, 96 insertions(+), 28 deletions(-)
>>
>
>
> --
> Eric Blake   eblake redhat com    +1-919-301-3266
> Libvirt virtualization library http://libvirt.org
>



-- 
        ---P.K.S