DMAPI Managed Region

["Francis Qu" <francis@xxxxxxxxxxxx>]

I set DM_REGION_WRITE | DM_REGION_TRUNC on a file. When I use vi to edit the
file, the write event is not generated as expected. The program is still
waiting and nothing happens. But the managed regions are cleared. Any ideas
on what happened in XFS?

Kernel: 2.4.18
DMAPI 2.0.0

Thanks,
Francis Qu