Commit c2e4bfe0 authored by Davidlohr Bueso's avatar Davidlohr Bueso Committed by Thomas Gleixner
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kernel/futex: Explicitly document pi_lock for pi_state owner fixup 



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: default avatarDavidlohr Bueso <dbueso@suse.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210226175029.50335-4-dave@stgolabs.net
parent a3f2428d

kernel/futex.c

+1 −0
Original line number Diff line number Diff line
@@ -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:

 *