Re: [PATCH REPOST REPOST v2] fscache: Use only one fscache_object_cong_wait.

[Andrew Morton]

On Thu, 23 Dec 2021 19:15:09 +0100 Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote:

> On 2021-12-23 17:17:09 [+0000], David Howells wrote:
> > Thanks, but this is gone in the upcoming fscache rewrite.  I'm hoping that
> > will get in the next merge window.
> 
> Yes, I noticed that. What about current tree, v5.16-rc6 and less?
> Shouldn't this be addressed?

If the bug is serious enough to justify a -stable backport then yes, we
should merge a fix such as this ahead of the fscache rewrite, so we
have something suitable for backporting.

Is the bug serious enough?

Or is the bug in a not-yet-noticed state?  In other words, is it
possible that four years from now, someone will hit this bug in a
5.15-based kernel and will then wish we'd backported a fix?