[dm-devel] dm mpath: remove unusable kmultipathd work queue

[Mike Snitzer]

Commit 76e33fe4e2c43 ("dm mpath: reinstate bio-based support") was
included in Linux 4.8.  Not sure how you missed this.

On Thu, Nov 03 2016 at  9:07pm -0400,
tang.junhui at zte.com.cn <tang.junhui at zte.com.cn> wrote:

> Hello Mike,
> 
> I used the master branch, the code seems a little older,
> It's true that the newer branches such as dm-4.10 have reused 
> kmultipathd.
> 
> Thanks,
> Tang
> 
> 
> 
> 发件人:         Mike Snitzer <snitzer at redhat.com>
> 收件人:         tang.junhui at zte.com.cn, 
> 抄送:   zhang.kai16 at zte.com.cn, dm-devel at redhat.com, agk at redhat.com
> 日期:   2016/11/03 22:57
> 主题:   Re: [dm-devel] dm mpath: remove unusable kmultipathd work queue
> 发件人: dm-devel-bounces at redhat.com
> 
> 
> 
> On Thu, Nov 03 2016 at  6:29am -0400,
> tang.junhui at zte.com.cn <tang.junhui at zte.com.cn> wrote:
> 
> > From: "tang.junhui" <tang.junhui at zte.com.cn>
> > 
> > kmultipathd work queue is used to process queued IOs for multipath
> > target when IOs need to retry, but now these IOs have been requeued
> > to block queue of DM device, hence this work queue is not useful
> > anymore, and this patch deletes it.
> > 
> > Signed-off-by: tang.junhui <tang.junhui at zte.com.cn>
> 
> Nack, you must be looking at older code.  bio-based DM multipath makes
> use of kmultipathd.
> 
> When suggesting changes please always make sure you're working with the
> latest upstream Linux code.
> 
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