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FIXUP_OWNER(9) Futex API reference FIXUP_OWNER(9)

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)

AUTHOR

Rusty Russell <rusty@rustcorp.com.au>
Author.

COPYRIGHT

April 2019 Kernel Hackers Manual 4.9.