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 5301137AA70; Sun, 5 Jul 2026 15:56:06 +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=1783266967; cv=none; b=HhR/0Mgr63sb6gYBPmt+GyFzh3dZkOuGL29z2EuuwuOXmROxbNQ4wM4ngiM6yape+6TBBk3g4YLCfvdX+0peltyzMjInvBr1WZIH64VixnKvXE/58LZ8XzrxvSsvL9rMqhhgWP8YOvQ6tSMrCUiMDxC23Yo9VRjUadZxVZjT5e0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783266967; c=relaxed/simple; bh=bVI/yoXGy31smQ7HrzpZhw/q4TPXvx89CW3lmyFpUZY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SttF3rNV7WY/Lai6nFSm3CVrkz5TEnxQ5TWNVDvtapgLkMQ/U0uEp0yZByiPbcQXrKiRkQ9BTxcZodyxjAUBJ4FnFyACrkYgXYlBUjj2B//5zwoKtVxPCLKzmXpTmLTgpT5HHKwWHGMlNBm49EhyFzYfeKz/HPxJuDXqCVQPD7w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=B0KOOB1v; 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="B0KOOB1v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE2C71F00AC4; Sun, 5 Jul 2026 15:56:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783266966; bh=z4feI/qU1SbwMydOJY76MHjKjfYHnoO820guZYu+4uI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=B0KOOB1vokuwb80M4eI7jlPbhSZfGFRBd+Dw9CLV57xwAGfJHlTnfX+eM+xLnASqG S0Btv1Ykwk3sSzloClyfGKdCOMFgXCY0mC+vP9zbB1bKt5T3364+sTMduxm+FNRyZf o44W808vD0BwHDU+4d7iuQe4CfR7+DMCGPwxCHGvV04jJKc6FXDUGijAazry20Xj9V qw/vk2nA53vKZ6SsiAQ1JN1eGHE2ZGYTme8CB/SbTty/TWcncWUyMQPwB26aPaywq2 Oq6KLUwQE3PJH72GtzMlUePxyfmruDAYZGWbHonJnC6m9U8/wM9o5jGl8QZC8zndTK q6BQYZoE1y1+g== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 4/8] mm/damon/reclaim: remove duplicated min_region_sz power of 2 check Date: Sun, 5 Jul 2026 08:55:55 -0700 Message-ID: <20260705155600.96555-5-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260705155600.96555-1-sj@kernel.org> References: <20260705155600.96555-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit DAMON_RECLAIM validates the user input for min_region_sz. The same validation is done inside damon_start() and damon_commit_ctx(). Remove the duplicate. Signed-off-by: SJ Park --- mm/damon/reclaim.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c index 11b70d0a9a6f0..6469b25cc34f9 100644 --- a/mm/damon/reclaim.c +++ b/mm/damon/reclaim.c @@ -208,11 +208,6 @@ static int damon_reclaim_apply_parameters(void) param_ctx->addr_unit = addr_unit; param_ctx->min_region_sz = max(DAMON_MIN_REGION_SZ / addr_unit, 1); - if (!is_power_of_2(param_ctx->min_region_sz)) { - err = -EINVAL; - goto out; - } - if (!damon_reclaim_mon_attrs.aggr_interval) { err = -EINVAL; goto out; -- 2.47.3