linux-kernel - Re: [PATCH v3 2/2] mm: memcg: introduce new event to trace shrink

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Message-Id: <20231129093341.02605a16142fc3e04384c52e@linux-foundation.org>
Date:   Wed, 29 Nov 2023 09:33:41 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Dmitry Rokosov <ddrokosov@...utedevices.com>
Cc:     Michal Hocko <mhocko@...e.com>, <rostedt@...dmis.org>,
        <mhiramat@...nel.org>, <hannes@...xchg.org>,
        <roman.gushchin@...ux.dev>, <shakeelb@...gle.com>,
        <muchun.song@...ux.dev>, <kernel@...rdevices.ru>,
        <rockosov@...il.com>, <cgroups@...r.kernel.org>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <bpf@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] mm: memcg: introduce new event to trace
 shrink_memcg

On Wed, 29 Nov 2023 18:20:57 +0300 Dmitry Rokosov <ddrokosov@...utedevices.com> wrote:

> Okay, I will try to prepare a new patch version with memcg printing from
> lruvec and slab tracepoints.
> 
> Then Andrew should drop the previous patchsets, I suppose. Please advise
> on the correct workflow steps here.

This series is present in mm.git's mm-unstable branch.  Note
"unstable".  So dropping the v3 series and merging v4 is totally not a
problem.  It's why this branch exists - it's daily rebasing, in high
flux.

When a patchset is considered stabilized and ready, I'll move it into
the mm-stable branch, which is (supposed to be) the non-rebasing tree
for next merge window.

If you have small fixes then I prefer little fixup patches against what
is presently in mm-unstable.

If you send replacement patches then no problem, I'll check to see
whether I should turn them into little fixup deltas.

I prefer little fixups so that people can see what has changed, so I
can see which review/test issues were addressed and so that people
don't feel a need to re-review the whole patchset.

If generation of little fixups is impractical, I'll drop the old series
entirely and I'll merge the new one.

Each case is a judgement call, please send whatever you think makes
most sense given the above.