Chris Ayoub
0b87becb0a
When the manager tears down every unit during reload or shutdown, unit_free() removes each dependency from both endpoints. This work is redundant because every dependency map is about to disappear, and it scales poorly with thousands of synthesized mount units. Clear all unit dependency maps in one manager-wide pass before invoking the existing unit_free() cleanup. With 10,000 bind mounts, this reduced the mean daemon-reload time from 63.558s to 14.708s.
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