linux-kernel - Re: SLUB: purpose of sysfs events on cache creation/removal

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Message-ID: <20191204153225.GM25242@dhcp22.suse.cz>
Date:   Wed, 4 Dec 2019 16:32:25 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Christopher Lameter <cl@...ux.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Re: SLUB: purpose of sysfs events on cache creation/removal

On Wed 04-12-19 15:25:43, Cristopher Lameter wrote:
> On Wed, 4 Dec 2019, Michal Hocko wrote:
> 
> > > > Just drop the events may be best. Then we know if someone is using it.
> > >
> > > I would be worried that a lack of events might be surprising and a
> > > potential userspace wouldn't know that something has changed.
> >
> > It would be great to land with some decision here.
> 
> Drop the events. These are internal kernel structures and supporting
> notifiers to userspace is a bit unusual.
 
As I've said I believe it is quite risky. But if you as a maintainer
believe this is the right thing to do I will not object. Care to send a
patch?

-- 
Michal Hocko
SUSE Labs