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ipc: sem_putref() does not need the semaphore lock any more
ipc_rcu_putref() uses atomics for the refcount, and the games to lock and unlock the semaphore just to try to keep the reference counting working are no longer useful. Acked-by: Davidlohr Bueso <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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