Hi All ,
Please correct me otherwise , if I am wrong here :
#define hlist_for_each_entry(tpos, pos, head, member) \
for (pos = (head)->first; \
pos && ({ prefetch(pos->next); 1;}) && \ <------------------(1)
({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ <-------------(2)
pos = pos->next)
In my understanding ({ prefetch(pos->next); 1;}) & ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;})
will always return 1 , and will do additional tasks ( which don't affect the final outcome of the _expression_ in the {})
of pre-fetching ( in (1) ) and casting the "current" pos into the typeof(*tpos) ( in (2) ).
Am I right ?
Regards,
Onkar
