From nobody Sat Feb 7 23:23:03 2026 Received: from mail-pj1-f43.google.com (mail-pj1-f43.google.com [209.85.216.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2A76E8F6F for ; Tue, 7 Oct 2025 16:46:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.43 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759855582; cv=none; b=BcK85L1Xo8v41IK1R6o8c9do21xUqFKbFsoLPF2IZf+cGckXOhXR+fciBqqbFgzVSgq2zlcJ2hErqzlW7bjvRBxZ8ltraz/Sp8Ha99X7ox5n0W7RYuVTgKCfHHQApzVHAEUc7vCJ7HscQ9PWkpTayLjLsYLJfwqMpwfUX2td/Ok= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759855582; c=relaxed/simple; bh=wYijfx82w/i+5cLwyYwuMtQXPPURM8z5k55rzxEZFLo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=rYZtN4VbEVygFSq8lE6FyW809ER/9tJUKOqe6tc5HjZrcXXp7l473ia3h0QIZ53JB23BqwTJT61oOAOWdeNFUq5mVk5TsH2r9zNo3vpSAMqkKaLKTh4lgGUKyHqkcJi3WPqubkyPdep7nlg0xHLurRMHhbgvuY+F2cyKCQow+t4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=eoy37p15; arc=none smtp.client-ip=209.85.216.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="eoy37p15" Received: by mail-pj1-f43.google.com with SMTP id 98e67ed59e1d1-3327f8ed081so7388537a91.1 for ; Tue, 07 Oct 2025 09:46:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1759855580; x=1760460380; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=oeG9oeMq3V/BRy9XfGgniPTDeM9j7ii3LAYxjxadWNg=; b=eoy37p15qPD5q4/QG3gzafcbim8yKyAFPZKD252CXP45fiE28KJ4UqPJLhVGA9zDKs eqYVAMuO44YHwHuBdaS9sHwxaGPKVrKItZ39zZpdhtg3pmfpjgPJpRLqw+4W0T2tD++5 Bgtze86FlCEgBHZaYDygrXTMIjWWI7+PRGQU+S6zEaIVF4AhCuWQcKs3glOmXJfoWTnS C8XcD4cRDt0zk98ihHSgzoI4a/sfLoWVUnwCuE1t40CuHC1EvXFr93JpZMEi9gvdgB0o w9n3n1EZqSgUoQp7j9aTAv8Jkb5dbYizwGzyOdW7xEOABEFTJHiCdDRKgFRLFg7nzd3E kyoQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759855580; x=1760460380; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=oeG9oeMq3V/BRy9XfGgniPTDeM9j7ii3LAYxjxadWNg=; b=JXC7SSwynxzjZZfESiwCUsV4haHpVITK5V801OWGTh4pvnUPgAf7xEYS4uv0xKCglu KMoGjmQlAilAILCYa9rI3ImXy0QUwIjcOw51jlCXf+XCgSN+TYnEFf56eQ92+wpLmy5c NMxlqWV2b7UJblLqs4HTXhNgW3CnRrxmlAR7wDz9xxVrUIrvbAY3TdtdXSFVUjPYXQ+k VDKpN36cLY4koGCKge9OAXAiv++lgD5agluWVXUmsq3GXVby0VKxgvprDSDSATT4qmI4 kjcNNlzUoul+d5ssIaYSBzmu6OOZFHgXJ3zmBQ7drabMjuMbuN0cSSBZhlYw7EokLUKQ TtAQ== X-Gm-Message-State: AOJu0Yy8msIw6uiKeVaYQ3se7AmhAUF9vr2wDwmRsnMIZUIwme03pPs6 3TfccCWjxJQe2AOn61psHak/MwEIsSZEkz1UZbpFDJNTlv5biuHOKsaVsNj3zw== X-Gm-Gg: ASbGncthT8pm9aXxyJTcpvOlpP2ekZD9KzLlc04AyQiXIdn7yBl4D/eRqN4ISWTnJ/e BYmCzxlFzj+TkiTuSE6sQSU0Qsr708tRMlf7RJWteGOKwPHTIYnMJbDs+osD/zivZ6D7X7cMiDX T6AWEMgFBbNRzT/K/0PYC5jxfcFN+2M6Nkp8aZ5CHw+fTjK9SPRCw33r4HB6wg9fUh34zXX3P0l Ed0SOmgPZ0O3dsif1ouYOnQbELPTilEEzhs4+N2DNhMqsLFBAnxfD0e1hcc7o1kCv16p4z+f0y/ LtzXjJe/bmA26xnDvcnWKQKwkE6nT8cahNCjOBc1u9MhT1EHLLBsWCWKfPb5owqZxFZDqHucYA4 bn1AWKTONQvPPp++U/LRFjqir+e7U3RrOOOaKDG5DoWB4n0/u84BDvYl0cRzqdNebGcVGH9gFoK Y43RGGvmJnlzfeo7POHjfTPR6Dake9MuyF14n7 X-Google-Smtp-Source: AGHT+IGgdyL9Z/s6avlLrqCHpOmrQPCcVtMXKZ1vrT7JttZd3PpRzeNrKsvQMIUPfcpRZ3c+WWGGhw== X-Received: by 2002:a17:90b:3890:b0:338:3156:fc44 with SMTP id 98e67ed59e1d1-33b513758bbmr187306a91.18.1759855580227; Tue, 07 Oct 2025 09:46:20 -0700 (PDT) Received: from daehojeong-desktop.mtv.corp.google.com ([2a00:79e0:2e7c:8:c285:14a:3e06:9c08]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b6099ad9405sm15548751a12.10.2025.10.07.09.46.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Oct 2025 09:46:19 -0700 (PDT) From: Daeho Jeong To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, kernel-team@android.com Cc: Daeho Jeong Subject: [PATCH] f2fs: set default valid_thresh_ratio to 80 for zoned devices Date: Tue, 7 Oct 2025 09:46:14 -0700 Message-ID: <20251007164614.3631594-1-daeho43@gmail.com> X-Mailer: git-send-email 2.51.0.618.g983fd99d29-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Daeho Jeong Zoned storage devices provide marginal over-capacity space, typically around 10%, for filesystem level storage control. By utilizing this extra capacity, we can safely reduce the default 'valid_thresh_ratio' to 80. This action helps to significantly prevent excessive garbage collection (GC) and the resulting power consumption, as the filesystem becomes less aggressive about cleaning segments that still hold a high percentage of valid data. Signed-off-by: Daeho Jeong --- fs/f2fs/gc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index 24e8b1c27acc..6c4d4567571e 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -25,7 +25,7 @@ #define DEF_GC_THREAD_CANDIDATE_RATIO 20 /* select 20% oldest sections as= candidates */ #define DEF_GC_THREAD_MAX_CANDIDATE_COUNT 10 /* select at most 10 sections= as candidates */ #define DEF_GC_THREAD_AGE_WEIGHT 60 /* age weight */ -#define DEF_GC_THREAD_VALID_THRESH_RATIO 95 /* do not GC over 95% valid bl= ock ratio for one time GC */ +#define DEF_GC_THREAD_VALID_THRESH_RATIO 80 /* do not GC over 80% valid bl= ock ratio for one time GC */ #define DEFAULT_ACCURACY_CLASS 10000 /* accuracy class */ =20 #define LIMIT_INVALID_BLOCK 40 /* percentage over total user space */ --=20 2.51.0.618.g983fd99d29-goog