option to mount read-only subvolume with read-write access

[Eric Levy <contact@ericlevy.name>]

At times it is helpful to modify a subvolume to which has been assigned 
a read-only property, without changing the property. One reason for 
keeping the property is that the same subvolume may be reachable 
through another mount point. Another is to ensure that the property 
persists even if some operation fails to complete.

Would you consider adding a mount option to cause the system to ignore 
a read-only property for the subvolume accessed through the mount 
point, without affecting access to the same subvolume through other 
mount points?