linux-kernel - Re: [RFC 5/5] pm: remove kernel thread freezing

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Date:   Fri, 6 Oct 2017 14:07:13 +0200
From:   Pavel Machek <pavel@....cz>
To:     "Luis R. Rodriguez" <mcgrof@...nel.org>
Cc:     viro@...iv.linux.org.uk, bart.vanassche@....com,
        ming.lei@...hat.com, tytso@....edu, darrick.wong@...cle.com,
        jikos@...nel.org, rjw@...ysocki.net, len.brown@...el.com,
        linux-fsdevel@...r.kernel.org, boris.ostrovsky@...cle.com,
        jgross@...e.com, todd.e.brandt@...ux.intel.com, nborisov@...e.com,
        jack@...e.cz, martin.petersen@...cle.com, ONeukum@...e.com,
        oleksandr@...alenko.name, oleg.b.antonyan@...il.com,
        linux-pm@...r.kernel.org, linux-block@...r.kernel.org,
        linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC 5/5] pm: remove kernel thread freezing

On Tue 2017-10-03 22:49:40, Luis R. Rodriguez wrote:
> On Tue, Oct 03, 2017 at 10:12:04PM +0200, Pavel Machek wrote:
> > On Tue 2017-10-03 11:53:13, Luis R. Rodriguez wrote:
> > > Now that all filesystems which used to rely on kthread
> > > freezing have been converted to filesystem freeze/thawing
> > > we can remove the kernel kthread freezer.
> > 
> > Are you surely-sure? You mentioned other in kernel sources of writes;
> > what about those?
> 
> You perhaps did not read the cover letter, it describes this patch will very
> likely take time to *ever* apply. We must cover tons of grounds first, to
> address precisely what you say.

Yeah, I was not careful enough reading cover letter. Having series
where 1-4/5 are ready to go, and 5/5 not-good-idea for years to come
is quite confusing.

Really relevant parts of cover letter should be moved to 5/5 and it
should be clearly marked as "not for application".
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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