Post lock pi_state and corner case management
int fixup_owner(u32 __user * uaddr, struct futex_q * q, int locked);
uaddr
user address of the futex
q
futex_q (contains pi_state and access to the rt_mutex)
locked
if the attempt to take the rt_mutex succeeded (1) or not (0)
After attempting to lock an rt_mutex, this function is called to cleanup the pi_state owner as well as handle race conditions that may allow us to acquire the lock. Must be called with the hb lock held.
1 - success, lock taken; 0 - success, lock not taken; <0 - on error (-EFAULT)
Rusty Russell <[email protected]>
Author.