fixup_owner
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Name

fixup_owner — Post lock pi_state and corner case management

Synopsis

int fixup_owner (u32 __user * uaddr,
 struct futex_q * q,
 int locked);
 

Arguments

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)

Description

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.

Return

1 - success, lock taken; 0 - success, lock not taken; <0 - on error (-EFAULT)

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