From: Amir Goldstein <amir73il@gmail.com>
To: Gao Xiang <gaoxiang25@huawei.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
"Theodore Ts'o" <tytso@mit.edu>, Pavel Machek <pavel@denx.de>,
David Sterba <dsterba@suse.cz>,
"Darrick J . Wong" <darrick.wong@oracle.com>,
Dave Chinner <david@fromorbit.com>,
Jaegeuk Kim <jaegeuk@kernel.org>, Jan Kara <jack@suse.cz>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
devel@driverdev.osuosl.org, LKML <linux-kernel@vger.kernel.org>,
linux-erofs@lists.ozlabs.org, Chao Yu <yuchao0@huawei.com>,
Miao Xie <miaoxie@huawei.com>,
Li Guifu <bluce.liguifu@huawei.com>,
Fang Wei <fangwei1@huawei.com>
Subject: Re: [PATCH v6 03/24] erofs: add super block operations
Date: Sat, 31 Aug 2019 09:34:44 +0300 [thread overview]
Message-ID: <CAOQ4uxichLUsPyg5Fqg-pSL85oqoDFcQHZbzdrkXX_-kK=CjDQ@mail.gmail.com> (raw)
In-Reply-To: <20190830171510.GC107220@architecture4>
On Fri, Aug 30, 2019 at 8:16 PM Gao Xiang <gaoxiang25@huawei.com> wrote:
>
> Hi Christoph,
>
> On Fri, Aug 30, 2019 at 09:39:10AM -0700, Christoph Hellwig wrote:
> > On Thu, Aug 29, 2019 at 06:50:48PM +0800, Gao Xiang wrote:
> > > > Please use an erofs_ prefix for all your functions.
> > >
> > > It is already a static function, I have no idea what is wrong here.
> >
> > Which part of all wasn't clear? Have you looked at the prefixes for
> > most functions in the various other big filesystems?
>
> I will add erofs prefix to free_inode as you said.
>
> At least, all non-prefix functions in erofs are all static functions,
> it won't pollute namespace... I will add "erofs_" to other meaningful
> callbacks...And as you can see...
>
> cifs/cifsfs.c
> 1303:cifs_init_inodecache(void)
> 1509: rc = cifs_init_inodecache();
>
> hpfs/super.c
> 254:static int init_inodecache(void)
> 771: int err = init_inodecache();
>
> minix/inode.c
> 84:static int __init init_inodecache(void)
> 665: int err = init_inodecache();
>
Hi Gao,
"They did it first" is never a good reply for code review comments.
Nobody cares if you copy&paste code with init_inodecache().
I understand why you thought static function names do not pollute
the (linker) namespace, but they do pollute the global namespace.
free_inode() as a local function name is one of the worst examples
for VFS namespace pollution.
VFS code uses function names like those a lot in the global namespace, e.g.:
clear_inode(),new_inode().
For example from recent history of namespace collision caused by your line
of thinking, see:
e6fd2093a85d md: namespace private helper names
Besides, you really have nothing to loose from prefixing everything
with erofs_, do you? It's better for review, for debugging...
Thanks,
Amir.
next prev parent reply other threads:[~2019-08-31 6:35 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 12:53 [PATCH v6 00/24] erofs: promote erofs from staging Gao Xiang
2019-08-02 12:53 ` [PATCH v6 01/24] erofs: add on-disk layout Gao Xiang
2019-08-29 9:59 ` Christoph Hellwig
2019-08-29 10:32 ` Gao Xiang
2019-08-29 10:36 ` Christoph Hellwig
2019-08-29 10:58 ` Gao Xiang
2019-08-29 15:58 ` Joe Perches
2019-08-29 17:26 ` Gao Xiang
2019-08-30 12:07 ` David Sterba
2019-08-30 12:18 ` Gao Xiang
2019-09-02 8:43 ` Pavel Machek
2019-09-02 14:07 ` David Sterba
2019-09-03 11:27 ` Pavel Machek
2019-08-29 15:41 ` Gao Xiang
2019-09-01 7:54 ` Gao Xiang
2019-09-02 12:45 ` Christoph Hellwig
2019-09-02 13:02 ` Gao Xiang
2019-09-02 8:40 ` Pavel Machek
2019-09-02 10:35 ` Gao Xiang
2019-08-02 12:53 ` [PATCH v6 02/24] erofs: add erofs in-memory stuffs Gao Xiang
2019-08-02 12:53 ` [PATCH v6 03/24] erofs: add super block operations Gao Xiang
2019-08-29 10:15 ` Christoph Hellwig
2019-08-29 10:50 ` Gao Xiang
2019-08-30 16:39 ` Christoph Hellwig
2019-08-30 17:15 ` Gao Xiang
2019-08-31 0:54 ` Gao Xiang
2019-08-31 6:34 ` Amir Goldstein [this message]
2019-08-31 6:48 ` Gao Xiang
2019-09-01 8:54 ` Gao Xiang
2019-09-02 12:51 ` Christoph Hellwig
2019-09-02 14:43 ` Gao Xiang
2019-09-02 15:19 ` Christoph Hellwig
2019-09-02 15:24 ` Gao Xiang
2019-08-02 12:53 ` [PATCH v6 04/24] erofs: add raw address_space operations Gao Xiang
2019-08-29 10:17 ` Christoph Hellwig
2019-08-29 11:46 ` Gao Xiang
2019-08-30 16:40 ` Christoph Hellwig
2019-08-30 17:23 ` Gao Xiang
2019-08-02 12:53 ` [PATCH v6 05/24] erofs: add inode operations Gao Xiang
2019-08-29 10:24 ` Christoph Hellwig
2019-08-29 11:59 ` Gao Xiang
2019-08-30 16:42 ` Christoph Hellwig
2019-08-30 18:46 ` Gao Xiang
2019-09-01 9:34 ` Gao Xiang
2019-09-02 12:53 ` Christoph Hellwig
2019-09-02 13:43 ` David Sterba
2019-09-02 13:55 ` Gao Xiang
2019-08-02 12:53 ` [PATCH v6 06/24] erofs: support special inode Gao Xiang
2019-08-29 10:25 ` Christoph Hellwig
2019-09-01 9:39 ` Gao Xiang
2019-08-02 12:53 ` [PATCH v6 07/24] erofs: add directory operations Gao Xiang
2019-08-02 12:53 ` [PATCH v6 08/24] erofs: add namei functions Gao Xiang
2019-08-29 10:28 ` Christoph Hellwig
2019-08-29 11:28 ` Gao Xiang
2019-08-02 12:53 ` [PATCH v6 09/24] erofs: support tracepoint Gao Xiang
2019-08-02 12:53 ` [PATCH v6 10/24] erofs: update Kconfig and Makefile Gao Xiang
2019-08-02 12:53 ` [PATCH v6 11/24] erofs: introduce xattr & posixacl support Gao Xiang
2019-08-02 12:53 ` [PATCH v6 12/24] erofs: introduce tagged pointer Gao Xiang
2019-08-02 12:53 ` [PATCH v6 13/24] erofs: add compression indexes support Gao Xiang
2019-08-02 12:53 ` [PATCH v6 14/24] erofs: introduce superblock registration Gao Xiang
2019-08-02 12:53 ` [PATCH v6 15/24] erofs: introduce erofs shrinker Gao Xiang
2019-08-02 12:53 ` [PATCH v6 16/24] erofs: introduce workstation for decompression Gao Xiang
2019-08-02 12:53 ` [PATCH v6 17/24] erofs: introduce per-CPU buffers implementation Gao Xiang
2019-08-02 12:53 ` [PATCH v6 18/24] erofs: introduce pagevec for decompression subsystem Gao Xiang
2019-08-02 12:53 ` [PATCH v6 19/24] erofs: add erofs_allocpage() Gao Xiang
2019-08-02 12:53 ` [PATCH v6 20/24] erofs: introduce generic decompression backend Gao Xiang
2019-08-02 12:53 ` [PATCH v6 21/24] erofs: introduce LZ4 decompression inplace Gao Xiang
2019-08-02 12:53 ` [PATCH v6 22/24] erofs: introduce the decompression frontend Gao Xiang
2019-08-02 12:53 ` [PATCH v6 23/24] erofs: introduce cached decompression Gao Xiang
2019-08-02 12:53 ` [PATCH v6 24/24] erofs: add document Gao Xiang
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