Operations that need access to the whole array must guarantee that there are
no simple operations ongoing. Right now this is achieved by
spin_unlock_wait(sem->lock) on all semaphores.
If complex_count is nonzero, then this spin_unlock_wait() is not necessary,
because it was already performed in
Operations that need access to the whole array must guarantee that there are
no simple operations ongoing. Right now this is achieved by
spin_unlock_wait(sem-lock) on all semaphores.
If complex_count is nonzero, then this spin_unlock_wait() is not necessary,
because it was already performed in
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