linux-kernel - Re: [PATCH] block: flush queued bios when the process blocks

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Date:	Tue, 27 May 2014 12:26:12 -0400 (EDT)
From:	Mikulas Patocka <mpatocka@...hat.com>
To:	Jens Axboe <axboe@...nel.dk>
cc:	Kent Overstreet <kmo@...erainc.com>, linux-kernel@...r.kernel.org,
	dm-devel@...hat.com, "Alasdair G. Kergon" <agk@...hat.com>,
	Mike Snitzer <msnitzer@...hat.com>
Subject: Re: [PATCH] block: flush queued bios when the process blocks

On Tue, 27 May 2014, Jens Axboe wrote:

> On 2014-05-27 09:23, Mikulas Patocka wrote:
> 
> > The patch adds bio list flushing to the scheduler just besides plug
> > flushsing.
> 
> ... which is exactly why I'm commenting. It'd be great to avoid yet one more
> scheduler hook for this sort of thing.
> 
> -- 
> Jens Axboe

One could create something like schedule notifier chain, but I'm not sure 
if it is worth the complexity because of just two users. If more users 
come in the future, it could be generalized.

Mikulas
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