linux-kernel - Re: [PATCH mm-unstable] mm/damon/core: increase regions merge aggressiveness while respecting min_nr

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Date: Thu, 27 Jun 2024 09:33:25 -0700
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: SeongJae Park <sj@...nel.org>,
	damon@...ts.linux.dev,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH mm-unstable] mm/damon/core: increase regions merge aggressiveness while respecting min_nr_regions

Hi Andrew,

On Wed, 26 Jun 2024 15:05:16 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote:

> On Wed, 26 Jun 2024 14:49:54 -0700 SeongJae Park <sj@...nel.org> wrote:
> 
[...]
> > I'll send the fix of the fix as a formal patch soon.
> > 
> > FYI, the original fix is definitely better to be merged in stable kernels, but
> > not urgent in my opinion, since the problematic case is not common and the
> > behavior was same since the beginning of DAMON.  Andrew, if you feel the
> > original fix is not stable yet, please feel free to delay moving it to
> > hotfix-stable for one week or two.
> 
> That's fine - we can merge cc:stable patches any time, really - they
> will still get backported.  There's only a hurry to get fixes merged up
> if they're security-related or if the issue is causing people problems.
> 
> In this case I'll await your -fix-2.patch and we can merge the patch
> next week.

All sounds good, thank you Andrew!  I just posted the -fix-2.patch:
https://lore.kernel.org/20240627163153.75969-1-sj@kernel.org


Thanks,
SJ