From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 CEA8E32572F; Fri, 23 Jan 2026 14:44:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769179502; cv=none; b=bKSHOhfGv0GIqibm9aeTilzsp81M8gLJYhFD76e4gwQB0zzuptd3sKTPcoukUetIWZ78AZfQKrjwBD2A1Cz/qxOZtrhy32m4M4tscYVsIRo5LOPKZCcZ6VJDxlYaFsMYbMuo2PXrP8tPUexOOx6rrMBXKpqm5BFnRghnUkUYh5k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769179502; c=relaxed/simple; bh=1fsOFH6vEkmEjbUP8ep2GCcNgAXEKeAW1MDUSgfC5ok=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=XQmk5oSdTU1y0PF3m7mBepcuNgV5XMsTSNDZWtMBtkS4xpI1scdUurNdrHBtVod+lDz6vGNBoneZlS9iiSoziT1QaDILuiklUUleOlaVUfcT+kN3sW3qDEwpN0XqTYG5Un3QP2jTb4Ske9GgKCS1wdcefoYr+8Z0FzB0VzqWHdk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=yD/PCj8t; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="yD/PCj8t" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=snVK1veFV1gsSfQW62KqY7I36fn5Lz9zL5oe6gesiPw=; b=yD/PCj8tH8iUKwuLmGuuaRZAZ4 b9Y4GP+ZFXRJxd8IETUTeRpoMA9EGtzEYyd7gQRocXKZRkzAHfuVOV4PzfLQKIDyOXkcfW4Zl6viQ xh9Yo++ttvJ18GBsu1YZsP44o10p3mUEuX2PUV3lwLmTeWHAWERBvlPHzJHKp1ZEia+p4LwwOPgoG LKQRfArxUM71d08Br/pmTk2inJo4ASiFz15PEufQYhrwjyh1XJiHBCzG1eKScbTU5xR3UEQeyqIuH fxPqKM4C9Yhsb/7bPjVv5KH1i+PTsMRKCmZ5iqxgYrtnr8lbdWgmo3r6UkTGnNG/uAlx9TfvyD1tF 4aDcDj+g==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1vjIP6-000000093cF-1yfQ; Fri, 23 Jan 2026 14:44:52 +0000 Date: Fri, 23 Jan 2026 06:44:52 -0800 From: Christoph Hellwig To: "D. Wythe" Cc: "David S. Miller" , Andrew Morton , Dust Li , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Sidraya Jayagond , Uladzislau Rezki , Wenjia Zhang , Mahanta Jambigi , Simon Horman , Tony Lu , Wen Gu , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, oliver.yang@linux.alibaba.com Subject: Re: [PATCH net-next 2/3] mm: vmalloc: export find_vm_area() Message-ID: References: <20260123082349.42663-1-alibuda@linux.alibaba.com> <20260123082349.42663-3-alibuda@linux.alibaba.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260123082349.42663-3-alibuda@linux.alibaba.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Fri, Jan 23, 2026 at 04:23:48PM +0800, D. Wythe wrote: > find_vm_area() provides a way to find the vm_struct associated with a > virtual address. Export this symbol to modules so that modularized > subsystems can perform lookups on vmalloc addresses. No, they have absolutely no business doing that. This functionality is very intentionally kept private.