linux-ext4 - Re: ext4: convert file system to meta

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Message-ID: <20120919035132.GB18707@thunk.org>
Date:	Tue, 18 Sep 2012 23:51:32 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	linux-ext4@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Fengguang Wu <fengguang.wu@...el.com>
Subject: Re: ext4: convert file system to meta_bg if needed during resizing

On Tue, Sep 18, 2012 at 02:46:35PM +0300, Dan Carpenter wrote:
>   1775          struct ext4_inode_info *ei = 0;
>                                         ^^^^^^
> Sparse is going to complain.  Not sure why Fengguang hasn't emailed you.

>   1791                  ei = EXT4_I(inode);
>                         ^^^^^^^^^^^^^^^^^^
> We only set "ei" if EXT4_FEATURE_COMPAT_RESIZE_INODE.
> ...

>   1829                  nr = le32_to_cpu(ei->i_data[EXT4_DIND_BLOCK]);
>                                          ^^^^^^^^^^
> Null deref.  Perhaps inode implies EXT4_FEATURE_COMPAT_RESIZE_INODE?

Inode does imply EXT4_FEATURE_COMPAT_RESIZE_INODE, but I should make
the code cleaner.

Thanks for pointing this out.

							- Ted
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