Hello!
> ok, that WARN_ON is over-eager. Fix is below:
Nevertheless, I cannot figure out what's happening here.
This local_bh_disable() is called right after schedule().
No way irqs can be disabled there. What is wrong?
static void netlink_table_grab(void)
{
write_lock_bh(&nl_table_lock);
if (atomic_read(&nl_table_users)) {
DECLARE_WAITQUEUE(wait, current);
add_wait_queue_exclusive(&nl_table_wait, &wait);
for(;;) {
set_current_state(TASK_UNINTERRUPTIBLE);
if (atomic_read(&nl_table_users) == 0)
break;
write_unlock_bh(&nl_table_lock);
schedule();
write_lock_bh(&nl_table_lock);
}
__set_current_state(TASK_RUNNING);
remove_wait_queue(&nl_table_wait, &wait);
}
}
Alexey
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