From nobody Wed Nov 27 22:53:03 2024 Received: from out-179.mta0.migadu.com (out-179.mta0.migadu.com [91.218.175.179]) (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 C056818A6AD for ; Mon, 7 Oct 2024 11:46:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728301614; cv=none; b=mkHObswV2yxzc2iaCMewGJiM4Z0uy9HboDBjxIz+te+7jLdpZf8CQWvXjfUjJ13SSCrWbWRm8uzHHXW258WNSxD2g+ORfkvOFyNNBeyeG0oey8fgqKBpJ7M/flp3whMkH/G8RsQhcebsJOJRk8X0JQzcgNvUxZgIrhlO39ClFto= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728301614; c=relaxed/simple; bh=+FgrIbE/YvDLp+WWfmzWSJOntTSQcjxrlHLLvoQZAv0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=cZEdql9q/pYiG2S3kZgYgyP/FeckX1HPozeeKo5zSDWHE+ptOiV5bvMepzUjCQOpTKa1e+5YHTuvFXN/kPiN2IGgGq4gsjy/WHoao4Q4PJbHp0I6447AB3vc/rvtpmJT7nGgFy5mTDXRlG/1dSsYXV4rDz7eq1nGuxid56iHKTo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=P1QnB3s1; arc=none smtp.client-ip=91.218.175.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="P1QnB3s1" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1728301610; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=xI5pJ0sea7IKzkBw+m/YUJfJHhAPmQx7k7R0WfJFwcY=; b=P1QnB3s1jNHMoJzfQ5QSUUyUVQc0hHQOI9RIyF1XlH59b8CRoMARTdkvC+euwT5MjR+5KF /SLiYYZHuMVNFePzpFb1EI5yF0+46/r5yvzlxWK5gKiXwPH8gQsWICu8Z6YlsPsTCW+Wzr 6+JzbTcKzPO6fmZ/ihPmEr0lkghnUUE= From: Thorsten Blum To: Jaegeuk Kim , Chao Yu Cc: Thorsten Blum , linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: [RESEND PATCH] f2fs: Use struct_size() to improve f2fs_acl_clone() Date: Mon, 7 Oct 2024 13:46:37 +0200 Message-ID: <20241007114638.1337-1-thorsten.blum@linux.dev> 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 X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Use struct_size() to calculate the number of bytes to allocate for a cloned acl. Signed-off-by: Thorsten Blum Reviewed-by: Chao Yu --- fs/f2fs/acl.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c index 8bffdeccdbc3..1fbc0607363b 100644 --- a/fs/f2fs/acl.c +++ b/fs/f2fs/acl.c @@ -296,9 +296,8 @@ static struct posix_acl *f2fs_acl_clone(const struct po= six_acl *acl, struct posix_acl *clone =3D NULL; =20 if (acl) { - int size =3D sizeof(struct posix_acl) + acl->a_count * - sizeof(struct posix_acl_entry); - clone =3D kmemdup(acl, size, flags); + clone =3D kmemdup(acl, struct_size(acl, a_entries, acl->a_count), + flags); if (clone) refcount_set(&clone->a_refcount, 1); } --=20 2.46.2