From: Chao Yu <yuchao0@huawei.com>
To: <dsterba@suse.cz>, Chao Yu <chao@kernel.org>,
Christoph Hellwig <hch@infradead.org>,
Gao Xiang <gaoxiang25@huawei.com>,
<linux-fsdevel@vger.kernel.org>, <devel@driverdev.osuosl.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
LKML <linux-kernel@vger.kernel.org>,
"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>,
Amir Goldstein <amir73il@gmail.com>,
"Darrick J . Wong" <darrick.wong@oracle.com>,
"Dave Chinner" <david@fromorbit.com>,
Jaegeuk Kim <jaegeuk@kernel.org>, Jan Kara <jack@suse.cz>,
Richard Weinberger <richard@nod.at>,
Linus Torvalds <torvalds@linux-foundation.org>,
<linux-erofs@lists.ozlabs.org>, Miao Xie <miaoxie@huawei.com>,
Li Guifu <bluce.liguifu@huawei.com>,
Fang Wei <fangwei1@huawei.com>
Subject: Re: [PATCH v8 11/24] erofs: introduce xattr & posixacl support
Date: Tue, 3 Sep 2019 14:30:55 +0800 [thread overview]
Message-ID: <12d37c63-dd0e-04fb-91f8-f4b930e867e5@huawei.com> (raw)
In-Reply-To: <20190902142037.GW2752@twin.jikos.cz>
On 2019/9/2 22:20, David Sterba wrote:
> Oh right, I think the reasons are historical and that we can remove the
> options nowadays. From the compatibility POV this should be safe, with
> ACLs compiled out, no tool would use them, and no harm done when the
> code is present but not used.
>
> There were some efforts by embedded guys to make parts of kernel more
> configurable to allow removing subsystems to reduce the final image
> size. In this case I don't think it would make any noticeable
> difference, eg. the size of fs/btrfs/acl.o on release config is 1.6KiB,
> while the whole module is over 1.3MiB.
Actually, btrfs's LOC is about 20 times larger than erofs's, acl part's LOC
could be very small one in btrfs.
EROFS can be slimmed about 10% size if we disable XATTR/ACL config, which is
worth to keep that, at least for now.
Thanks,
next prev parent reply other threads:[~2019-09-03 6:33 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-15 4:41 [PATCH v8 00/24] erofs: promote erofs from staging v8 Gao Xiang
2019-08-15 4:41 ` [PATCH v8 01/24] erofs: add on-disk layout Gao Xiang
2019-08-15 4:41 ` [PATCH v8 02/24] erofs: add erofs in-memory stuffs Gao Xiang
2019-08-15 4:41 ` [PATCH v8 03/24] erofs: add super block operations Gao Xiang
2019-08-15 4:41 ` [PATCH v8 04/24] erofs: add raw address_space operations Gao Xiang
2019-08-15 4:41 ` [PATCH v8 05/24] erofs: add inode operations Gao Xiang
2019-08-15 4:41 ` [PATCH v8 06/24] erofs: support special inode Gao Xiang
2019-08-15 4:41 ` [PATCH v8 07/24] erofs: add directory operations Gao Xiang
2019-08-15 16:13 ` Linus Torvalds
2019-08-15 16:46 ` Gao Xiang
2019-08-15 4:41 ` [PATCH v8 08/24] erofs: add namei functions Gao Xiang
2019-08-15 4:41 ` [PATCH v8 09/24] erofs: support tracepoint Gao Xiang
2019-08-15 4:41 ` [PATCH v8 10/24] erofs: update Kconfig and Makefile Gao Xiang
2019-08-15 4:41 ` [PATCH v8 11/24] erofs: introduce xattr & posixacl support Gao Xiang
2019-09-02 12:57 ` Christoph Hellwig
2019-09-02 13:05 ` Gao Xiang
2019-09-02 13:06 ` David Sterba
2019-09-02 13:51 ` Chao Yu
2019-09-02 14:20 ` David Sterba
2019-09-02 15:06 ` Christoph Hellwig
2019-09-02 15:10 ` Gao Xiang
2019-09-02 15:21 ` Gao Xiang
2019-09-03 6:30 ` Chao Yu [this message]
2019-08-15 4:41 ` [PATCH v8 12/24] erofs: introduce tagged pointer Gao Xiang
2019-08-15 4:41 ` [PATCH v8 13/24] erofs: add compression indexes support Gao Xiang
2019-08-15 4:41 ` [PATCH v8 14/24] erofs: introduce superblock registration Gao Xiang
2019-08-15 4:41 ` [PATCH v8 15/24] erofs: introduce erofs shrinker Gao Xiang
2019-08-15 4:41 ` [PATCH v8 16/24] erofs: introduce workstation for decompression Gao Xiang
2019-08-15 4:41 ` [PATCH v8 17/24] erofs: introduce per-CPU buffers implementation Gao Xiang
2019-08-15 4:41 ` [PATCH v8 18/24] erofs: introduce pagevec for decompression subsystem Gao Xiang
2019-08-15 4:41 ` [PATCH v8 19/24] erofs: add erofs_allocpage() Gao Xiang
2019-08-15 4:41 ` [PATCH v8 20/24] erofs: introduce generic decompression backend Gao Xiang
2019-08-30 16:35 ` Christoph Hellwig
2019-08-30 16:52 ` Gao Xiang
2019-08-30 16:55 ` Christoph Hellwig
2019-08-15 4:41 ` [PATCH v8 21/24] erofs: introduce LZ4 decompression inplace Gao Xiang
2019-08-15 4:41 ` [PATCH v8 22/24] erofs: introduce the decompression frontend Gao Xiang
2019-08-15 4:41 ` [PATCH v8 23/24] erofs: introduce cached decompression Gao Xiang
2019-08-15 4:41 ` [PATCH v8 24/24] erofs: add document Gao Xiang
2019-08-15 9:06 ` [PATCH v8 00/24] erofs: promote erofs from staging v8 Greg Kroah-Hartman
2019-08-15 16:18 ` Linus Torvalds
2019-08-15 17:04 ` Gao Xiang
2019-08-22 14:16 ` Gao Xiang
2019-08-22 21:36 ` [PATCH v2] erofs: move erofs out of staging Gao Xiang via Linux-erofs
2019-08-29 17:11 ` [PATCH v8 00/24] erofs: promote erofs from staging v8 Miao Xie
2019-08-30 7:48 ` Chao Yu
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