ubuntu 10.04 move mount - Linux

又有問題了orz.

剛剛心血來潮試試看
# mount -M /media/garage/wine /dev/shm/wine1
mount: wrong fs type, bad option, bad superblock on /media/garage/wine,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

可是dmesg下什麼都沒有
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# strace mount -M /media/garage/wine /dev/shm/wine1 看到這一行
mmount("/media/garage/wine", "/dev/shm/wineorig", 0x8055dbc, \
MS_MGC_VAL|MS_MOVE, NULL) = -1 EINVAL (Invalid argument)

# uname -r => 2.6.32-30-generic

可是當我用bind mount時(-B)就都好好的
請問大家有什麼建議嗎？ 謝謝大家 <(_ _)>

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