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 56E4C29898F; Thu, 3 Sep 2026 01:03:43 +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=1788397424; cv=none; b=ekSbxE/zziJSWz80YSCwLM3u3W7mLNHpxbkMty5TxYl4/g6aR0agYg1WsCUrjGtcUb4jcnbPwMnz3gXRDWQ+zheAf/WjyyZWClmA958HrIJs0bbA5S3uhPLScjTLyP4ylO+fKCTH9R8PnCH/8jHrntf4o8tA/n3i+m45/zOddmw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788397424; c=relaxed/simple; bh=wAZLCviLOkwAGlvhZFB48gga6WtfFacHiZ14c/z8NiE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gWGy/YEtI58cOkBlG4Mekgimwx5/XsVx0WSskBr2pHnOMXoif/MFYc2Y1fAUqaJ8fEQNNLgi7Lk6fTyZEy/ElCa5kU0K9ji1pgUU42B6JK1H0Bg67e8ZBO7rxGD1It/eTrn1GwYmA1Sq+bm2Jaw/XVe3h5NdPkvSP4biRp5soAU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=W21hnb7e; 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="W21hnb7e" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 16CB21F00A3F; Thu, 3 Sep 2026 01:03:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788397423; bh=bFqUVYf2n04Uixau/NkzvcP/6puf0JnXDQxViDXP7BQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=W21hnb7eXdHFi5C1WDTJxhG7jrXJ3GRTxTkW9kXHLAflDXVKTfvdNeQzKfzYZJDIM OkyuKIY20zYacrL6Y26G9sSwNzVPZ4nvRHrnky32h5IIPr/oVwCa2C/PZzglsSq35q i2VcWvgmSs40pPuPwUtSTJMM1UPrOr00aRXUPck0Uz10xwYvokDhPHA22vBhQuwKYl Seudwxv3FLimUuSQindVD9+RBkBQpqcL2X/K11Y8AgJo9aX4/KSeFiVA/HMxNUFXnE 2dXpn67RadvEj2yUpBivnV2xL+IaInOeiH0beKyN1yX8XsbBl8W2eOWka1L608IIm/ 64zleUSZnJ+6g== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 3/4] mm/damon/reclaim: remove unnecessary damon_call() param validation Date: Wed, 2 Sep 2026 18:03:32 -0700 Message-ID: <20260903010334.93622-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260903010334.93622-1-sj@kernel.org> References: <20260903010334.93622-1-sj@kernel.org> Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit DAMON_RECLAIM avoids passing NULL or unstarted damon_ctx to damon_call() with its own validation. The validation is no longer needed, because the DAMON core layer now handles the corner cases itself. Remove the unnecessary check. Signed-off-by: SJ Park --- mm/damon/reclaim.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/mm/damon/reclaim.c b/mm/damon/reclaim.c index 45d5557cc575a..42a2c9cb13431 100644 --- a/mm/damon/reclaim.c +++ b/mm/damon/reclaim.c @@ -271,8 +271,6 @@ static int damon_reclaim_commit_inputs_fn(void *arg) return damon_reclaim_apply_parameters(); } -static bool damon_reclaim_damon_has_started; - static int damon_reclaim_commit_inputs_store(const char *val, const struct kernel_param *kp) { @@ -293,10 +291,6 @@ static int damon_reclaim_commit_inputs_store(const char *val, if (!commit_inputs_request) return 0; - /* Skip damon_call() if ctx has not successfully started. */ - if (!damon_reclaim_damon_has_started) - return -EINVAL; - err = damon_call(ctx, &control); return err ? err : control.return_code; @@ -343,8 +337,6 @@ static int damon_reclaim_turn(bool on) err = damon_start(&ctx, 1, true); if (err) return err; - if (!damon_reclaim_damon_has_started) - damon_reclaim_damon_has_started = true; return damon_call(ctx, &call_control); } -- 2.47.3