Yu Watanabe
6a04c1e518
Unfortunately, the kernel may send events in a random order: ``` [ 25.769624] systemd-udevd[194]: sdi7: Device is queued (SEQNUM=2843, ACTION=add) [ 25.769893] systemd-udevd[194]: sda5: Device is queued (SEQNUM=2842, ACTION=add) [ 25.770517] systemd-udevd[194]: sdi8: Device is queued (SEQNUM=2844, ACTION=add) ``` As you can see, udevd receives the event with SEQNUM=2843 earlier than one with SEQNUM=2842. Let's make queued events sorted, as our logic of determining which event is ready for being processed assumes that queued events are sorted. See event_build_dependencies(). Also, refuse to queue an event if another event with the same seqnum is already queued.
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