Hi, For a critical section protected by a spin lock, kernel preemption is disabled explicitly, probably to make the critical section atomic. But, suppose that an interrupt occures in this critical section, allowing interrupts can wreck the atomicity. So, why don't we disable interrupts as a critical section is executing? -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ