[Bug 12790] New: kernel build warning causes EXT4 boot warning

[Bug 12790] New: kernel build warning causes EXT4 boot warning

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12790

           Summary: kernel build warning causes EXT4 boot warning
           Product: File System
           Version: 2.5
     KernelVersion: 2.6.28.7
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext4
        AssignedTo: fs_ext4@kernel-bugs.osdl.org
        ReportedBy: thoralf.dassler@gmail.com


Latest working kernel version: unknown
Earliest failing kernel version: unknown
Distribution: Slamd64
Hardware Environment: Toshiba Satellite P200
Software Environment: n/a
Problem Description: Boot message: 
EXT4-fs warning (device sda1): ext4_fill_super: extents feature not enabled on
this filesystem, use tune2fs.
Steps to reproduce: boot into Linux

I get these lines when I build the kernel: 
CC      fs/ext4/super.o
fs/ext4/super.c: In function 'ext4_fill_super':
fs/ext4/super.c:2177: warning: format '%u' expects type 'unsigned int', but
argument 2 has type 'ext4_group_t'

See .config attached. I also noticed several patches on Google, but am
reluctant to apply them.


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[Bug 12790] kernel build warning causes EXT4 boot warning

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12790





------- Comment #1 from thoralf.dassler@gmail.com  2009-02-28 02:26 -------
Created an attachment (id=20388)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=20388&action=view)
.config


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[Bug 12790] kernel build warning causes EXT4 boot warning

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12790





------- Comment #2 from tytso@mit.edu  2009-02-28 06:12 -------
The two are unrelated.  The boot-time warning is because you are using the ext4
filesystem driver on a file system that does not have extents.  This is
harmless unless it's not what you wanted to do.  This might be because you have
ext4 built into a system where you have an ext2 root file system, or because
you explicitly asked for the filesystem to be mounted with ext4 even though it
doesn't have the extents feature enabled.

The build warning is harmless, and is fixed in 2.6.29 when we make ext4_group_t
be an unsigned int --- it has no need to be an unsigned long.


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[Bug 12790] kernel build warning causes EXT4 boot warning

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12790





------- Comment #3 from thoralf.dassler@gmail.com  2009-02-28 08:07 -------
Tahnks for clarifying.


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[Bug 12790] kernel build warning causes EXT4 boot warning

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=12790


Theodore Tso <tytso@mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |tytso@mit.edu
         Resolution|                            |INVALID
         Regression|---                         |No




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