linux-kernel - Re: regression: nfs mount (even idle) eventually hangs server

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Message-ID: <f533c2e38c0619ea0c3b4346d1c7c99c5ae2122b.camel@gmx.de>
Date:   Thu, 22 Dec 2022 05:14:54 +0100
From:   Mike Galbraith <efault@....de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     linux-nfs@...r.kernel.org
Subject: Re: regression: nfs mount (even idle) eventually hangs server

On Thu, 2022-12-22 at 04:42 +0100, Mike Galbraith wrote:
> On Wed, 2022-12-21 at 10:56 +0100, Mike Galbraith wrote:
> > > 6.1 didn't reproduce either, so it would appear to be a merge window bug.
>
> Ah, not true, turning evolution loose in nfs mounted home and letting
> it refresh mailboxes while desktop box was kept busy jammed up 6.1.0 in
> fairly short order.  

Well crap.  That was _not_ virgin 6.1.0 after all, it was 6.1.0 with...

44df6f439a17 NFSD: add delegation reaper to react to low memory condition
3959066b697b NFSD: add support for sending CB_RECALL_ANY
a1049eb47f20 NFSD: refactoring courtesy_client_reaper to a generic low memory shrinker

...applied from poking about yesterday.  I had given up on those as
culprit, and intended to pop them off and rebuild, but they were in
fact in the booted kernel.  Oh well, booboo could have a bright side.

	-Mike