Introduce a hack that will make geom_gate to work with read-only mounts. Now, when trying to mount file system in read-only mode it tries to opened a device for writting to be able to update to read-write mode latter. Ehh.
Introduce a hack that will make geom_gate to work with read-only mounts.
Now, when trying to mount file system in read-only mode it tries to
opened a device for writting to be able to update to read-write mode
latter. Ehh.

Discussed with:	phk

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