Re: [PATCH v5] KEYS: key_garbage_collector(): process in chunks

[Jarkko Sakkinen <jarkko@kernel.org>]

On Fri, Oct 30, 2026 at 02:17:31AM +0200, Jarkko Sakkinen wrote:
> On Fri, Oct 30, 2026 at 07:41:48AM +0800, Hillf Danton wrote:
> > On Thu, 29 Oct 2026 19:29:17 +0200 Jarkko Sakkinen wrote:
> > > key_garbage_collector() has a design that is not resistant enough for
> > > workqueue lockups. The duration scales up relative to the number of items
> > > in the serial tree, which causes a reoccuring theme of being guilty of
> > > causing workqueue lockups.
> > >
> > Given cond_resched() the gc work is not a cpu hog, and given concurrency
> > workqueue can get individual cpu highly overloaded in short time, so what
> > you delivered is a half backed croissant, HBC, as you failed to make it
> > clear why lockup occurs when the number of gc items rockets up.
> 
> Please, read:
> 
> 1. Documentation/process/code-of-conduct-interpretation.rst
> 2. Documentation/process/code-of-conduct.rst

And: I'd suggest to do some self-reflection and not use LKML for
trolling. There's 4chan, Reddit and other more appriate forums for
doing that.

Br, Jarkko