cf62e00295
inotify FD may take several milliseconds to close. We measured
daemon-reload
default: (0.427 ± 0.05) s
async: (0.323 ± 0.02) s
with 5 path units out of 422 units. I.e. ~1% of units cause ~25% of
delay, hence this fix seems like low-hanging fruit on the daemon-reload
critical path.
Particular inotify slowness pointed out by @fbuihuu.
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