SYSCALL_DEFINE1(orientunlock_read, struct orientation_range *, orient)
{
int should_wake = decrement_reference_count(orient);
if (should_wake == 0)
wake_up_interruptible(&write_wait_queue);
return 0;
}
static void
update_reference_counters_in_instruction( instruction *instruction, counter_update_type type ) {
assert( instruction != NULL );
if ( instruction->actions == NULL ) {
return;
}
for ( dlist_element *a = get_first_element( instruction->actions ); a != NULL; a = a->next ) {
if ( a->data == NULL ) {
continue;
}
action *action = a->data;
if ( action->type == OFPAT_GROUP ) {
if ( type == INCREMENT ) {
increment_reference_count( action->group_id );
}
else if ( type == DECREMENT ) {
decrement_reference_count( action->group_id );
}
else {
error( "Undefined counter update type ( %#x ).", type );
}
}
}
}
SYSCALL_DEFINE1(orientunlock_write, struct orientation_range *, orient)
{
decrement_reference_count(orient);
wake_up_interruptible(&read_wait_queue);
return 0;
}
