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 301B03612E8; Thu, 13 Aug 2026 03:50:10 +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=1786593013; cv=none; b=Xc3Rx71QsGKgptOpz3koyqo63wrfEy9/Q/tkP0Ll+7KFlw99nPFOtrualPYE2Ppec3IkquBLC+AnWrJ3045mrDOFpHMViwtoeLoi+w7vXg6ULHpzbJ1jfmNzfb7No5rEybgJe+RFYloAvjAclF1uhmeBBc63U0rFOelKTakzfRo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786593013; c=relaxed/simple; bh=wAZLCviLOkwAGlvhZFB48gga6WtfFacHiZ14c/z8NiE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ds8cokYh9NZBFzRJvTMxuwD7VtzMhv4qJIC2aaoOjhr2ZkDjvpc/nrpLCRjcLYISiLhIVfGaTwX6AzNOTm0I9KW5uZK+JFaykuS6uk//TQG4ePFi+AZStvh5fV3OgyHGURqUiSf7RIwOHW4ipTWCgqCV2nLOhR0OZ56mXJTsWN4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZOj3dCJ/; 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="ZOj3dCJ/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6A9CF1F00A3E; Thu, 13 Aug 2026 03:50:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786593009; bh=bFqUVYf2n04Uixau/NkzvcP/6puf0JnXDQxViDXP7BQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZOj3dCJ/1d3ON081pPcVJreuyCmWBp+g9lWZeT672RpxyAgNE0u/xEa0VbttpZVSB RXQi/h/A/XyUh6lqJXEMCowjcMLF9EvJsIFKiUx0o+LFheHNXSrZ4Jr5aTOUdnmEOw 0966Xms2D6m+ziu5O+Z75zFAdTnDlx0BybIKL6n0gJWTFRVK94enFhCM+1o1HJyHGO Weo4J041qAte4Gawte5oeZ2B298hmFP0Dg9/IB8mowtQHU+w+550V3OWS3vBqp4Zo8 282vrVqncGxGDbyZtUGyenSjZQwvewRbSRsW+qT3+0MgNgerYhRkYk0RfspjGKVS+X jtrvCMexIeW3g== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 3/4] mm/damon/reclaim: remove unnecessary damon_call() param validation Date: Wed, 12 Aug 2026 20:49:58 -0700 Message-ID: <20260813035001.97364-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260813035001.97364-1-sj@kernel.org> References: <20260813035001.97364-1-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 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