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From: Hannes Reinecke <hare@suse.de>
To: Mike Snitzer <snitzer@redhat.com>
Cc: Junichi Nomura <j-nomura@ce.jp.nec.com>,
	dm-devel@redhat.com, Alasdair Kergon <agk@redhat.com>
Subject: Re: [PATCHv2 0/2] dm-multipath: push back requests instead of queueing
Date: Thu, 30 Jan 2014 07:53:04 +0100	[thread overview]
Message-ID: <52E9F6D0.9050703@suse.de> (raw)
In-Reply-To: <20140130013858.GA22108@redhat.com>

On 01/30/2014 02:38 AM, Mike Snitzer wrote:
> On Sat, Jan 18 2014 at 10:41am -0500,
> Mike Snitzer <snitzer@redhat.com> wrote:
> 
>> On Fri, Jan 17 2014 at  5:42am -0500,
>> Hannes Reinecke <hare@suse.de> wrote:
>>
>>> Hi all,
>>>
>>> dm-multipath still carries around it's own queueing framework for
>>> implementing 'queue_if_no_path'.
>>> However, there is no real reason for this; we could as well
>>> push back the requests onto the request_queue.
>>> In doing so we can also reduce the memory pressure during
>>> fail_if_no_path scenarios, as we don't have to allocate a
>>> context for each request when it need to be requeued.
>>>
>>> This patchset is the reworked version from the original, including
>>> the review by Jun'ichi.
>>
>> Much appreciated.  But unfortunately it is too late for 3.14.
>>
>> These will be my immediate priority once I transition to 3.15
>> development (likely by end of next week).
> 
> Hi Hannes,
> 
> Do you have a new patchset for this work based on the review Junichi
> provided?  I'd like to review/stage your latest once you have it.
> 
Hmm, the patchset should include the review.

But I'll check.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@suse.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)

      reply	other threads:[~2014-01-30  6:53 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-17 10:42 [PATCHv2 0/2] dm-multipath: push back requests instead of queueing Hannes Reinecke
2014-01-17 10:42 ` [PATCH 1/2] " Hannes Reinecke
2014-01-20 11:57   ` Junichi Nomura
2014-01-20 15:49     ` Hannes Reinecke
2014-01-21  9:07       ` Junichi Nomura
2014-01-30 15:08         ` Mike Snitzer
2014-01-17 10:42 ` [PATCH 2/2] dm-multipath: reduce memory pressure during requeuing Hannes Reinecke
2014-01-20 11:59   ` Junichi Nomura
2014-01-20 12:15     ` Hannes Reinecke
2014-01-30 15:09       ` Mike Snitzer
2014-01-18 15:41 ` [PATCHv2 0/2] dm-multipath: push back requests instead of queueing Mike Snitzer
2014-01-30  1:38   ` Mike Snitzer
2014-01-30  6:53     ` Hannes Reinecke [this message]

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