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locktorture: Cannot hold read and write lock
... trigger an error if so. Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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@ -453,14 +453,19 @@ static int lock_torture_writer(void *arg)
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do {
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if ((torture_random(&rand) & 0xfffff) == 0)
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schedule_timeout_uninterruptible(1);
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cxt.cur_ops->writelock();
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if (WARN_ON_ONCE(lock_is_write_held))
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lwsp->n_lock_fail++;
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lock_is_write_held = 1;
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if (WARN_ON_ONCE(lock_is_read_held))
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lwsp->n_lock_fail++; /* rare, but... */
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lwsp->n_lock_acquired++;
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cxt.cur_ops->write_delay(&rand);
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lock_is_write_held = 0;
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cxt.cur_ops->writeunlock();
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stutter_wait("lock_torture_writer");
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} while (!torture_must_stop());
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torture_kthread_stopping("lock_torture_writer");
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@ -482,12 +487,17 @@ static int lock_torture_reader(void *arg)
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do {
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if ((torture_random(&rand) & 0xfffff) == 0)
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schedule_timeout_uninterruptible(1);
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cxt.cur_ops->readlock();
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lock_is_read_held = 1;
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if (WARN_ON_ONCE(lock_is_write_held))
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lrsp->n_lock_fail++; /* rare, but... */
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lrsp->n_lock_acquired++;
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cxt.cur_ops->read_delay(&rand);
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lock_is_read_held = 0;
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cxt.cur_ops->readunlock();
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stutter_wait("lock_torture_reader");
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} while (!torture_must_stop());
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torture_kthread_stopping("lock_torture_reader");
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