Re: 2.6.29-git: cannot mount ext4/loop

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Alexander Beregalov wrote:
2009/4/2 Alexander Beregalov <a.beregalov@xxxxxxxxx>:
2009/4/2 Alexander Beregalov <a.beregalov@xxxxxxxxx>:
2009/4/2 Theodore Tso <tytso@xxxxxxx>:
On Thu, Apr 02, 2009 at 02:53:51AM +0400, Alexander Beregalov wrote:
On Thu, Apr 02, 2009 at 01:23:28AM +0400, Alexander Beregalov wrote:
Hi Theodore, Jens

kernel is 2.6.29-07099-g8b53ef3

Mount failed:

EXT4-fs: barriers enabled
kjournald2 starting: pid 1867, dev loop0:8, commit interval 5 seconds
EXT4-fs error (device loop0): ext4_iget: block reference 2703228928 >=
max (524288) in inode #2, offset=0
EXT4-fs: get root inode failed
EXT4-fs (device loop0): mount failed

This message indicates that the inode contains a reference to a block
outside the filesystem at inode->i_data[0].

When I added the block range checks, initially I was assuming that
when EXTENTS_FL is not set, the inode->i_data *always* contains
references to further blocks.  Ted showed me wrong and added the condition

	ISREG() || ISDIR() || ( ISLNK() && !is_fast_symlink() )

before that assumption can be made.  But maybe we need some further
restraints?

Kind regards,

Thiemo
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