blocking_notifier_call_chain9
Call functions in a blocking notifier chain
Usage
int blocking_notifier_call_chain(struct blocking_notifier_head * nh, unsigned long val, void * v);
Arguments
nh
Pointer to head of the blocking notifier chain
val
Value passed unmodified to notifier function
v
Pointer passed unmodified to notifier function
Overview
Calls each function in a notifier chain in turn. The functions run in a process context, so they are allowed to block.
If the return value of the notifier can be and'ed with NOTIFY_STOP_MASK then blocking_notifier_call_chain will return immediately, with the return value of the notifier function which halted execution. Otherwise the return value is the return value of the last notifier function called.