2.4.10-xfs with dmapi option panic

[Takayuki Sasaki <sasaki@xxxxxxxxxxxxxxxxxx>]

Hi there,

While testing the XFS filesystem with dmapi option,
I encountered panic with the following operations:

# mkfs.xfs /dev/foo
# mount -t xfs -o dmapi /dev/foo /mnt/foo
# umount /mnt/foo

kernel panic: dm_change_fsys_entry: can't find DMAPI fsrp for vfsp c6965860

backtrace process using KDB is:
    schedule+0x520 (0xc048fa40,0x0,0x0,0xc0382580)
    notifier_caller_chain+0x23(0xc0508da0,0x0,0x0,0x0)
    panic+0x87 (0xc0382580,0xc303e65c,0xc303e584)
    dm_change_fsys_entry+0x30 (0xc303e65c)
    dm_send_namesp_event+0x60 (0x2, 0xc1b26260,0x0,0xc1b26260,0x0)
    xfs_unmount+0x74 (0xc1248400,0x0,0xc05132c0)
    fs_dounmount+0x59
    linvfs_put_super+0x36
    kill_super+0x14d
    __mntput+0x39
    path_release+0x2a
    sys_umount+0x194
    sys_oldumount+0xe
    system_call+0x33

Kernel:    linux-2.4.10-xfs (20010925 CVS Tree)
gcc:       gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
Box:       Pentium III (Coppermine) 733MHz + SiS 630 chip set + 128MB RAM

This is not critical issue so far for me, however, I couldn't
find same errors in the archive, so report to the list.

Cheers,

Takayuki