Revocable references vs. krefs
Revocable references vs. krefs
Posted Sep 29, 2025 13:55 UTC (Mon) by Alan.Stern (subscriber, #12437)In reply to: Revocable references vs. krefs by farnz
Parent article: Revocable references for transient devices
Okay, that makes sense. Jon's original article did not draw any distinction between a subsystem claiming a removable device and the device's driver registering with a subsystem.
Posted Sep 30, 2025 0:50 UTC (Tue)
by riking (subscriber, #95706)
[Link]
Revocable references vs. krefs
Of course, for the subsystems that the removable device's driver does register with, it *cannot* process those unregistrations until it is satisfied that its consumers have stopped trying to use the device (now, via struct revokable). Once the SRCU critical section has passed, the subsystem deregistrations can happen.