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kernel/futex: Explicitly document pi_lock for pi_state owner fixup

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This seems to belong in the serialization and lifetime rules section.
pi_state_update_owner() will take the pi_mutex's owner's pi_lock to
do whatever fixup, successful or not.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210226175029.50335-4-dave@stgolabs.net
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Davidlohr Bueso 2021-02-26 09:50:29 -08:00 committed by Thomas Gleixner
parent a3f2428d2b
commit c2e4bfe0ee
1 changed files with 1 additions and 0 deletions
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kernel/futex.c
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@ -981,6 +981,7 @@ static inline void exit_pi_state_list(struct task_struct *curr) { }
* p->pi_lock:
*
* p->pi_state_list -> pi_state->list, relation
* pi_mutex->owner -> pi_state->owner, relation
*
* pi_state->refcount:
*