linux-ext4 - Re: [PATCH v1 14/22] mke2fs: add inline

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Message-ID: <20131012083250.GE14971@birch.djwong.org>
Date:	Sat, 12 Oct 2013 01:32:50 -0700
From:	"Darrick J. Wong" <darrick.wong@...cle.com>
To:	linux-ext4@...r.kernel.org, "Theodore Ts'o" <tytso@....edu>,
	Zheng Liu <wenqing.lz@...bao.com>
Subject: Re: [PATCH v1 14/22] mke2fs: add inline_data support in mke2fs

On Sat, Oct 12, 2013 at 04:31:17PM +0800, Zheng Liu wrote:
> On Sat, Oct 12, 2013 at 01:18:25AM -0700, Darrick J. Wong wrote:
> > On Sat, Oct 12, 2013 at 04:08:46PM +0800, Zheng Liu wrote:
> > > On Fri, Oct 11, 2013 at 05:27:18PM -0700, Darrick J. Wong wrote:
> > > [...]
> > > > > +	 */
> > > > > +	if ((fs_param.s_feature_incompat & EXT4_FEATURE_INCOMPAT_INLINE_DATA) &&
> > > > > +	    !(fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) {
> > > > > +		com_err(program_name, 0,
> > > > > +			_("Ext_attr feature not enabled, so inline_data "
> > > > > +			  "feature doesn't be specified"));
> > > > 
> > > > "The inline_data feature requires the ext_attr feature." ?
> > > 
> > > Ah, I have noticed that now we set xattr handler by default.  So, yes,
> > > inline_data feature doesn't require the ext_attr feature.
> > 
> > I think you /do/ still need this check, just in case someone tries to mkfs -O
> > ^ext_attr,inline_data.  Defaults can be overridden.
> 
> I have tested this ('mkfs -O ^ext_attr,inline_data') just a minute ago,
> and it seems that it works well.  BTW, when we use setfattr(1) to set
> xattr in a ext4 file system without ext_attr feature, this feature will
> be enabled in ext4_xattr_update_super_block().

Oh good!  My mistake, then.  That teaches me to squint at my computer at 1:30
in the morning. :)

--D
> 
>                                                 - Zheng
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