From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3F6EE446C1A for ; Tue, 11 Aug 2026 13:48:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786456122; cv=none; b=ailUPH52Nl4Zr0vdM5Gk/5v575kJdGFk1GRqOf4Kd5jrnTMhPlGgROBsuaYmYF+Fq511al0XIEb+Ob2e2CLdk4at70dFfhkyEtyugwvE8SPZJMvV++IMFvTGa3mEAglGMleokdr7MZSVJ9/iWYOTuxTKgS0QCPwkpCLdHxYl9qw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786456122; c=relaxed/simple; bh=we3aBzCgkMnOoLsS/31bDX/E4dMOuK8LT2upT9Eg2vM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HE/VdR61j5q+r4ip1dl9b46feY+EYZLDQYSxSsjHXilv1umJX9tLltJAxN6XQK0gp8/dzcUNH/KkJGZukbMUwRXOUU+OLdvywUEtjFPoOHG03I8jCA06SHzQ0Gy2pdrgWpBJbbq1DPZKTNqmIFrp9JBqEljS++fbx1fEMDGCqWw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=biAvzbCv; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="biAvzbCv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C71B71F000E9; Tue, 11 Aug 2026 13:48:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786456110; bh=aV2lGD3Wqra4hjarElg97Ux0YRUXDXkhMbbuBCPstkk=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=biAvzbCvtcpPGdF+4LoJsvRg70YEs6XO/sUAaX6ZWHkVDiPi4ag/BPVaaxSDtZ6VY 1gDgSNFO1pLJEqWPXXsV0R4bgd3qg1EiiuJD+2c1DM2QXLS305cyRsi+FpQ6h/7glz vJsGsDYwH8kz0NVES2Pd8NkHc+NgjFGw+NhycI52ECtTEHcuUMrDcihLa1j5rN6J53 DzR0kyoo1s2ufNTsNkEqQFCVqTJgRf273Ne8WF7eGLjJRbrEmIvPI3TiraPHeiEZ9z wa3RxAfpucJgOYGzRuxBx0m3c86F+Bo9hV44UpSLUL7c+vBE1yjmVVHFKOY3YOv49I CKlnYAVwz943A== From: SJ Park To: Liew Rui Yan Cc: SJ Park , damon@lists.linux.dev, linux-mm@kvack.org Subject: Re: [PATCH 2/3] docs/mm/damon/design: difference between watermarks and nr_snapshots Date: Tue, 11 Aug 2026 06:48:27 -0700 Message-ID: <20260811134827.4557-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260811101841.804596-3-aethernet65535@gmail.com> References: Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Tue, 11 Aug 2026 18:18:40 +0800 Liew Rui Yan wrote: > Explain the difference between nr_snapshots reaches max_nr_snapshots and > watermarks. > > Signed-off-by: Liew Rui Yan > --- > Documentation/mm/damon/design.rst | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst > index 939298f2a9b9..1fcf0b8c044b 100644 > --- a/Documentation/mm/damon/design.rst > +++ b/Documentation/mm/damon/design.rst > @@ -872,7 +872,8 @@ the action to the region will fail. > > Unlike normal stats, ``max_nr_snapshots`` is set by users. If it is set as > non-zero and ``nr_snapshots`` be same to or greater than ``nr_snapshots``, the > -scheme is deactivated. > +scheme is deactivated. Note that, unlike watermarks, even if a scheme's Let's use two spaces between sentences, like other pargraphs in this file. > +``nr_snapshots`` reaches ``max_nr_snapshots``, monitoring will not stop. > > To know how user-space can read the stats via :ref:`DAMON sysfs interface > `, refer to :ref:s`stats ` part of the > -- > 2.55.0 Thanks, SJ