From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5C3F5C3A59F for ; Thu, 29 Aug 2019 09:51:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 33AA423405 for ; Thu, 29 Aug 2019 09:51:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="IbneeKsW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727061AbfH2JvU (ORCPT ); Thu, 29 Aug 2019 05:51:20 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:46524 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726232AbfH2JvT (ORCPT ); Thu, 29 Aug 2019 05:51:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; 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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=pM3wcAf7FIhzSl23I8rKYxtK3wexClX83D/gf9S1f5A=; b=IbneeKsWWuv4rxcM7lu8P5kA3 doWzWkPrytBw/fszPm6xltgjTmTxL4JXhdnei6neL6afPwn9u60oKqq+j0LjxxyddOwzpI28yfX7z YqIOQk84pk3uiqKVHzitq1akCD1IhMzCmu/1Wlk0RbbBXe4jzjkDMDZ6K2domNXpvnEd/9SzBrhEy t4wPrN7JIs9cchyRrF8OQhxCd7qpHZcytVM+R4hsegY+/Ffs4w9XIzXznAsrcjlu8qZaKJOhaQfiX ZqnrA75QFzXsVcmfAYWUA/wxSpx7mPFqUZZLI6S7P5Yz5v6zJOSHgM4P2kghVVte5ohsYB48nqa5d 1aXJs9T6g==; Received: from hch by bombadil.infradead.org with local (Exim 4.92 #3 (Red Hat Linux)) id 1i3H5I-0005Pa-Tv; Thu, 29 Aug 2019 09:51:16 +0000 Date: Thu, 29 Aug 2019 02:51:16 -0700 From: Christoph Hellwig To: Gao Xiang Cc: Christoph Hellwig , Greg Kroah-Hartman , devel@driverdev.osuosl.org, linux-fsdevel@vger.kernel.org, Sasha Levin , Valdis =?utf-8?Q?Kl=C4=93tnieks?= , linux-kernel@vger.kernel.org, yuchao0@huawei.com, miaoxie@huawei.com, "Theodore Y. Ts'o" , Eric Biggers , Zefan Li Subject: Re: [PATCH] staging: exfat: add exfat filesystem code to staging Message-ID: <20190829095116.GA20598@infradead.org> References: <20190828160817.6250-1-gregkh@linuxfoundation.org> <20190828170022.GA7873@kroah.com> <20190829062340.GB3047@infradead.org> <20190829070149.GA155353@architecture4> <20190829082409.GA83154@architecture4> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190829082409.GA83154@architecture4> User-Agent: Mutt/1.11.4 (2019-03-13) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Thu, Aug 29, 2019 at 04:24:09PM +0800, Gao Xiang wrote: > It seems I misunderstood your idea, sorry about that... EROFS > properly uses vfs interfaces (e.g. we also considered RCU symlink > lookup path at the very beginning of our design as Al said [1], > except for mount interface as Al mentioned [2] (thanks him for > taking some time on it), it was used for our debugging use), > and it didn't cause any extra burden to vfs or other subsystems. It would still have been a lot less effort for everyone without the idiotic staging detour.