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Lock busdma operations and serialize detach against open/close

Description

Lock busdma operations and serialize detach against open/close

Use sx to allow M_WAITOK allocations (suggested by markj).

admbugs: 782
Reviewed by: markj

Details

Committed
marcelJul 4 2019, 2:51 AM
Parents
rS349713: Eliminate a goto and a label in vm_map_wire_locked by inserting an 'else'.
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