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 B40423B993B; Sun, 28 Jun 2026 22:01:26 +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=1782684088; cv=none; b=jhPoK0qQkzmOeIm94mFjt6mY931pfwT2VymAM2LzYYz/OkGCwhvjYJvv6M3RNsohOrRcZCgzeOhOnAtuLHNdsU9ua+43ZqxEAOQUBkxG6MIqmcRpNjoW/b1AuoNz5LVxJXz11JGJMrD4J7EuyyVB5bryjJdd9Pn2q6YhW2K3/eo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782684088; c=relaxed/simple; bh=+HqDYSfJRqMjE30x6P+7tsUTx5xC+f6+iwrRC3CA6TQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Y5WcY47OGgC1pOrSmCjdYgUoaS/NSomzDUwo6O82gwMDxaMdU7h5ng+6bS2YgIsM/y4qC7VUkzxAk7hybSsArHvG7BRAttA7bgqCEP5kqHr8P3yHqrL/GMOCwutjSZCXNzxxzboNiRX8Zhplx7ts5v6rc1Jvy9oQ8jhojN29ij0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k7snI7ds; 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="k7snI7ds" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C9C31F00A3E; Sun, 28 Jun 2026 22:01:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782684086; bh=NXkhSNQJNDKDyNoOpZwIsSL2pL1PP1RKf/KNfR1efPU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=k7snI7dsYQUBKz+sEXAwEJ0jGoB9h7VmSZbnukrtFhNlKgg15CBOgF4ez3l7Yz1zZ UhN6WecoYgfpASxnzeLpWiE0xxUi2Xtzu+qd8iNdgnbe4o0GvWz23YEU4USNP+uyb4 dLdMpwRVQUFQhu8qVbN4Zwp4Lo2nkfOo8DQikfnNwcZAH/U+cfiQq+Zw4V3g1QZfkj QvDnc6khpqr0OygI0Pjlr/sOB9zPGiwuhXI/honAzHMywIJyoofAafC1Ud+qf1PiVA tBf/BzCaWvCTsTDlNQ9wQyt5zMyczTsXLhkjl5bLV4B7RLUK+ZStT5ohRolTSRJYSn cBz4JzhrUw6IQ== From: SJ Park To: Andrew Morton Cc: SJ Park , "# 5 . 18 . x" , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 03/11] mm/damon/sysfs-schemes: kobject_del() scheme dirs Date: Sun, 28 Jun 2026 15:01:12 -0700 Message-ID: <20260628220121.97360-4-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260628220121.97360-1-sj@kernel.org> References: <20260628220121.97360-1-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 On CONFIG_DEBUG_KOBJECT_RELEASE enabled kernel, lack of kobject_del() could cause directories creation failures due to the name conflicts. Fix those issues for scheme directories by adding kobject_del() calls. Fixes: 7e84b1f8212a ("mm/damon/sysfs: support DAMON-based Operation Schemes") Cc: # 5.18.x Signed-off-by: SJ Park --- mm/damon/sysfs-schemes.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 3cbeccd436e40..db496d2e493a4 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -2681,6 +2681,7 @@ void damon_sysfs_schemes_rm_dirs(struct damon_sysfs_schemes *schemes) for (i = 0; i < schemes->nr; i++) { damon_sysfs_scheme_rm_dirs(schemes_arr[i]); + kobject_del(&schemes_arr[i]->kobj); kobject_put(&schemes_arr[i]->kobj); } schemes->nr = 0; @@ -2722,13 +2723,15 @@ static int damon_sysfs_schemes_add_dirs(struct damon_sysfs_schemes *schemes, goto out; err = damon_sysfs_scheme_add_dirs(scheme); if (err) - goto out; + goto del_out; schemes_arr[i] = scheme; schemes->nr++; } return 0; +del_out: + kobject_del(&scheme->kobj); out: damon_sysfs_schemes_rm_dirs(schemes); kobject_put(&scheme->kobj); -- 2.47.3