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

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Message-ID: <alpine.DEB.2.21.1912041524290.18825@www.lameter.com>
Date:   Wed, 4 Dec 2019 15:25:43 +0000 (UTC)
From:   Christopher Lameter <cl@...ux.com>
To:     Michal Hocko <mhocko@...nel.org>
cc:     LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Re: SLUB: purpose of sysfs events on cache creation/removal

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.