Commit 7687201e authored by Peter Zijlstra's avatar Peter Zijlstra
Browse files

locking/rwbase: Properly match set_and_save_state() to restore_state() 



Noticed while looking at the readers race.

Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarWill Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20210909110203.828203010@infradead.org
parent 6880fa6c

kernel/locking/rwbase_rt.c

+1 −1
Original line number Diff line number Diff line
@@ -220,7 +220,7 @@ static int __sched rwbase_write_lock(struct rwbase_rt *rwb, 
	for (; atomic_read(&rwb->readers);) {

		/* Optimized out for rwlocks */

		if (rwbase_signal_pending_state(state, current)) {

			__set_current_state(TASK_RUNNING);

			rwbase_restore_current_state();

			__rwbase_write_unlock(rwb, 0, flags);

			return -EINTR;

		}