linux-kernel - Re: [PATCH v8 11/24] erofs: introduce xattr & posixacl support

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Date:   Mon, 2 Sep 2019 21:05:08 +0800
From:   Gao Xiang <gaoxiang25@...wei.com>
To:     Christoph Hellwig <hch@...radead.org>
CC:     <linux-fsdevel@...r.kernel.org>, <devel@...verdev.osuosl.org>,
        "Alexander Viro" <viro@...iv.linux.org.uk>,
        LKML <linux-kernel@...r.kernel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Theodore Ts'o <tytso@....edu>, Pavel Machek <pavel@...x.de>,
        David Sterba <dsterba@...e.cz>,
        Amir Goldstein <amir73il@...il.com>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Dave Chinner <david@...morbit.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Jan Kara <jack@...e.cz>,
        Richard Weinberger <richard@....at>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        <linux-erofs@...ts.ozlabs.org>, Chao Yu <yuchao0@...wei.com>,
        Miao Xie <miaoxie@...wei.com>,
        Li Guifu <bluce.liguifu@...wei.com>,
        Fang Wei <fangwei1@...wei.com>
Subject: Re: [PATCH v8 11/24] erofs: introduce xattr & posixacl support

Hi Christoph,

On Mon, Sep 02, 2019 at 05:57:11AM -0700, Christoph Hellwig wrote:
> > +config EROFS_FS_XATTR
> > +	bool "EROFS extended attributes"
> > +	depends on EROFS_FS
> > +	default y
> > +	help
> > +	  Extended attributes are name:value pairs associated with inodes by
> > +	  the kernel or by users (see the attr(5) manual page, or visit
> > +	  <http://acl.bestbits.at/> for details).
> > +
> > +	  If unsure, say N.
> > +
> > +config EROFS_FS_POSIX_ACL
> > +	bool "EROFS Access Control Lists"
> > +	depends on EROFS_FS_XATTR
> > +	select FS_POSIX_ACL
> > +	default y
> 
> Is there any good reason to make these optional these days?

...Android (like smartphones) will not use it at least
   (just my personal thought, an option though...)

Thanks,
Gao Xiang