From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="boRv2crS" Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 522C999; Tue, 12 Dec 2023 05:06:32 -0800 (PST) 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=67rvxc8KF4Am0jhrdB27CpUPgtiBS4+Z+YV3L6uI8NY=; b=boRv2crSvsM4V861vsFYqPudVo oG6u3FHR4FHHElcP1zSEgNE+5kwcrLl8Uz1eXzDuU+QSB05HYIyBVVwkOtXpg6sFkZYx9mqFKQjJM CXisjMmelC2DPUsL58SML8bx6tCM58JvtFZQEwgmQOs8rP7cRr4IW8hQuQzWegRit+rlMtWPUetU0 KpVjNA38PW2wXGCw2uTGgg9BxSr2A9zNj44dE7KI91wfU5RQzskEfu8I4zBHr9uonz3WBXwvKc/s5 KmNCYBg+ld1Sb/eG3XxK7KRizFgVP0sSFjlESHL+pIF2sj7jbF+BxiL0+eJ/kF74k423hjI106Lm6 x5CzPzPg==; Received: from hch by bombadil.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1rD2Sy-00Bko8-0I; Tue, 12 Dec 2023 13:06:28 +0000 Date: Tue, 12 Dec 2023 05:06:28 -0800 From: Christoph Hellwig To: Gao Xiang Cc: Christoph Hellwig , Eric Curtin , Linux Kernel Mailing List , linux-unionfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, Daan De Meyer , Stephen Smoogen , Yariv Rachmani , Daniel Walsh , Douglas Landgraf , Alexander Larsson , Colin Walters , Brian Masney , Eric Chanudet , Pavol Brilla , Lokesh Mandvekar , Petr =?utf-8?Q?=C5=A0abata?= , Lennart Poettering , Luca Boccassi , Neal Gompa , nvdimm@lists.linux.dev Subject: Re: [RFC KERNEL] initoverlayfs - a scalable initial filesystem Message-ID: References: <941aff31-6aa4-4c37-bb94-547c46250304@linux.alibaba.com> <58d175f8-a06e-4b00-95fe-1bd5a79106df@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-unionfs@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: <58d175f8-a06e-4b00-95fe-1bd5a79106df@linux.alibaba.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Tue, Dec 12, 2023 at 03:50:25PM +0800, Gao Xiang wrote: > I have no idea how it's faster than the current initramfs or initrd. > So if it's really useful, maybe some numbers can be posted first > with the current `memmap` hack and see it's worth going further with > some new infrastructure like initdax. Agreed.