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From: Gao Xiang <gaoxiang25@huawei.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	devel@driverdev.osuosl.org, linux-fsdevel@vger.kernel.org,
	"Sasha Levin" <alexander.levin@microsoft.com>,
	"Valdis Klētnieks" <valdis.kletnieks@vt.edu>,
	linux-kernel@vger.kernel.org, yuchao0@huawei.com,
	miaoxie@huawei.com, "Theodore Y. Ts'o" <tytso@mit.edu>,
	"Eric Biggers" <ebiggers@kernel.org>,
	"Zefan Li" <lizefan@huawei.com>
Subject: Re: [PATCH] staging: exfat: add exfat filesystem code to staging
Date: Thu, 29 Aug 2019 16:24:09 +0800	[thread overview]
Message-ID: <20190829082409.GA83154@architecture4> (raw)
In-Reply-To: <20190829070149.GA155353@architecture4>

Hi Christoph,

On Thu, Aug 29, 2019 at 03:01:49PM +0800, Gao Xiang wrote:
> Hi Christoph,
> 
> On Wed, Aug 28, 2019 at 11:23:40PM -0700, Christoph Hellwig wrote:
> > Can we please just review the damn thing and get it into the proper
> > tree?  That whole concept of staging file systems just has been one
> > fricking disaster, including Greg just moving not fully reviewed ones
> > over like erofs just because he feels like it.  I'm getting sick and
> > tired of this scheme.
> 
> I just want to a word on EROFS stuff (I'm not suitable to comment
> on the current exfat implementation). Since EROFS stuff has been
> in staging tree for more than a year, anyone who wants to review
> it can review this filesystem at any time.
> 
> EROFS is not just a homebrew or experimental fs for now, it has been
> widely used for many commerical smartphones, and we will upstream it
> to AOSP for more Android smartphones after it gets merged to upstream.
> I personally cc-ed you for a month, and I didn't get any objection
> from others (including Linus) for about 2 months. That isn't because
> of someone likes it, rather we cannot make no progress compared with
> some exist fs community because this is our love work.
> 
> And it's self-contained driver at least, and it's disabled by default,
> It cannot be stayed in staging tree to do a lot of EROFS feature
> improvements itself forever (since it is cleaned enough).
> It has proven its validity as well.

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.

[1] https://lore.kernel.org/r/20190325045744.GK2217@ZenIV.linux.org.uk/
[2] https://lore.kernel.org/r/20190720224955.GD17978@ZenIV.linux.org.uk/

Thanks,
Gao Xiang

> 
> Thanks,
> Gao Xiang
> 

  reply	other threads:[~2019-08-29  8:25 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-28 16:08 [PATCH] staging: exfat: add exfat filesystem code to staging Greg Kroah-Hartman
2019-08-28 17:00 ` Greg Kroah-Hartman
2019-08-29  6:23   ` Christoph Hellwig
2019-08-29  6:39     ` Greg Kroah-Hartman
2019-08-29  9:41       ` Christoph Hellwig
2019-08-29  9:50         ` Greg Kroah-Hartman
2019-08-29 10:37           ` Christoph Hellwig
2019-08-29 11:04             ` Gao Xiang
2019-08-29 11:18               ` Greg Kroah-Hartman
2019-08-29 11:18             ` Greg Kroah-Hartman
2019-08-29 15:11               ` Dan Carpenter
2019-08-29 15:27                 ` Gao Xiang
2019-08-29 15:43                   ` Dan Carpenter
2019-08-29 15:51                     ` Gao Xiang
2019-08-29 16:04                       ` Gao Xiang
2019-08-30  8:34                         ` Dan Carpenter
2019-08-30  8:43                           ` Gao Xiang
2019-08-30 11:26                             ` Dan Carpenter
2019-08-30 12:04                               ` Gao Xiang
2019-08-29 16:44                     ` Gao Xiang
2019-08-29 16:59                       ` Joe Perches
2019-08-29 17:02                         ` Gao Xiang
2019-08-30  2:06                     ` Chao Yu
2019-08-30  6:38                       ` Gao Xiang
2019-08-30 12:00                         ` Checking usage of likeliness annotations Markus Elfring
2019-08-30 11:51                       ` [PATCH] staging: exfat: add exfat filesystem code to staging David Sterba
2019-08-31  3:50                         ` Chao Yu
2019-08-30 15:36               ` Christoph Hellwig
2019-08-30 21:54               ` Dave Chinner
2019-08-31 10:31                 ` Valdis Klētnieks
2019-09-01  0:04                   ` Dave Chinner
2019-08-29  7:01     ` Gao Xiang
2019-08-29  8:24       ` Gao Xiang [this message]
2019-08-29  9:51         ` Christoph Hellwig
2019-08-29 12:14 ` Pali Rohár
2019-08-29 12:34   ` Valdis Klētnieks
2019-08-29 12:46     ` Pali Rohár
2019-08-29 14:08 ` Markus Elfring
2019-08-29 15:44 ` Markus Elfring
2019-08-29 20:56 ` Pali Rohár
2019-08-29 23:18   ` Valdis Klētnieks
2019-08-29 23:35     ` Sasha Levin
2019-08-30  7:56       ` Pali Rohár
2019-10-16 14:03         ` Pali Rohár
2019-10-16 14:31           ` Sasha Levin
2019-10-16 16:03             ` Pali Rohár
2019-10-16 16:20               ` Sasha Levin
2019-10-16 16:22               ` Greg Kroah-Hartman
2019-10-16 16:32                 ` Pali Rohár
2019-10-16 16:50                   ` Greg Kroah-Hartman
2019-10-16 20:33               ` Sasha Levin
2019-10-16 21:53                 ` Valdis Klētnieks
2019-10-17  7:53                   ` Pali Rohár
2019-10-17  7:50                 ` Pali Rohár
2020-02-13  0:06                   ` Pali Rohár
2020-02-13 21:18                     ` Sasha Levin
2020-02-14 22:16                       ` Valdis Klētnieks
2020-02-14 22:43                         ` Pali Rohár
2020-02-14 23:25                           ` Valdis Klētnieks
2020-04-21 21:30                       ` exfat upcase table for code points above U+FFFF (Was: Re: [PATCH] staging: exfat: add exfat filesystem code to staging) Pali Rohár
2020-04-27 15:49                         ` Sasha Levin
2020-04-28  7:46                           ` Pali Rohár
2019-10-16 16:05             ` [PATCH] staging: exfat: add exfat filesystem code to staging Valdis Klētnieks
2019-08-30  8:03     ` Pali Rohár
2019-08-30 15:40   ` Christoph Hellwig
2019-08-30 15:43     ` Pali Rohár
2019-09-14 13:39 ` [PATCH] staging: exfat: add exfat filesystem code to Park Ju Hyung
2019-09-15 13:54   ` Greg KH
2019-09-15 16:11     ` Ju Hyung Park
     [not found] ` <20190918195920.25210-1-qkrwngud825@gmail.com>
2019-09-18 20:12   ` [PATCH] staging: exfat: rebase to sdFAT v2.2.0 Greg KH
2019-09-18 20:13   ` Greg KH
2019-09-18 20:22     ` Ju Hyung Park
2019-09-18 20:26       ` Greg KH
2019-09-18 20:31         ` Ju Hyung Park
2019-09-18 20:46           ` Valdis Klētnieks
2019-09-18 21:31   ` kbuild test robot
2019-09-18 21:31   ` kbuild test robot
2019-09-18 22:17     ` Ju Hyung Park
2019-10-24  9:39 ` [PATCH] staging: exfat: add exfat filesystem code to staging Pali Rohár

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