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From: SJ Park <sj@kernel.org>
To: Song Hu <husong@kylinos.cn>
Cc: SJ Park <sj@kernel.org>,
	damon@lists.linux.dev,
	linux-mm@kvack.org,
	linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] damon: update outdated comment about DAMOS filter handling
Date: Wed, 15 Jul 2026 06:56:40 -0700
Message-ID: <20260715135640.84147-1-sj@kernel.org>
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In-Reply-To: <20260715092634.1450702-1-husong@kylinos.cn>
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On Wed, 15 Jul 2026 17:26:34 +0800 Song Hu <husong@kylinos.cn> wrote:

> The kernel-doc comment above enum damos_filter_type states that only the
> anon and memcg type filters are handled by damon_operations (and therefore
> accounted as 'tried'), and that DAMON_OPS_VADDR and DAMON_OPS_FVADDR do
> not support those two filter types.
> 
> Neither is accurate anymore.  damos_filter_for_ops() routes every filter
> type except ADDR and TARGET to the operations layer, and the VADDR and
> FVADDR operations (the latter being a copy of the former) handle all of
> those types through damos_folio_filter_match() / damos_va_filter_out().
> Update the comment to match the code.

Thank you for updating this!
> 
> Signed-off-by: Song Hu <husong@kylinos.cn>

Reviewed-by: SJ Park <sj@kernel.org>

This patch is applied to damon/next [1] tree.  If this patch is not added to
mm.git in short term (~1 week?), I will ask mm.git maintainer (Andrew Morton)
to pick this.  So, no action from your side is needed for now.  If it seems I
also forgot doing that or you cannot wait for my action, please feel free to
directly ask that to Andrew.

[1] https://origin.kernel.org/doc/html/latest/mm/damon/maintainer-profile.html#scm-trees


Thanks,
SJ

[...]