locking/rwsem: Remove a few useless comments

Our rwsem code (xadd, at least) is rather well documented, but
there are a few really annoying comments in there that serve
no purpose and we shouldn't bother with them.

Signed-off-by: Davidlohr Bueso <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/kernel/locking/rwsem-xadd.c b/kernel/locking/rwsem-xadd.c
index b036231722771cea5b66efab149761b1058c4d5e..e02fe3289b5a9e43afa661196c247126c3434391 100644 (file)
--- a/kernel/locking/rwsem-xadd.c
+++ b/kernel/locking/rwsem-xadd.c
@@ -234,7 +234,6 @@ struct rw_semaphore __sched *rwsem_down_read_failed(struct rw_semaphore *sem)
        struct task_struct *tsk = current;
        WAKE_Q(wake_q);
 
-       /* set up my own style of waitqueue */
        waiter.task = tsk;
        waiter.type = RWSEM_WAITING_FOR_READ;
 
@@ -613,7 +612,6 @@ struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem)
        raw_spin_lock_irqsave(&sem->wait_lock, flags);
 locked:
 
-       /* do nothing if list empty */
        if (!list_empty(&sem->wait_list))
                __rwsem_mark_wake(sem, RWSEM_WAKE_ANY, &wake_q);
 
@@ -637,7 +635,6 @@ struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem)
 
        raw_spin_lock_irqsave(&sem->wait_lock, flags);
 
-       /* do nothing if list empty */
        if (!list_empty(&sem->wait_list))
                __rwsem_mark_wake(sem, RWSEM_WAKE_READ_OWNED, &wake_q);