rcu: Fix init_rcu_head() comment.
The current (and implicit) comment header for init_rcu_head() and destroy_rcu_head() incorrectly says that they are not needed for statically allocated rcu_head structures. This commit therefore fixes this comment. Reported-by: Bart Van Assche <Bart.VanAssche@wdc.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
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@ -214,10 +214,12 @@ do { \
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#endif
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/*
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* init_rcu_head_on_stack()/destroy_rcu_head_on_stack() are needed for dynamic
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* initialization and destruction of rcu_head on the stack. rcu_head structures
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* allocated dynamically in the heap or defined statically don't need any
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* initialization.
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* The init_rcu_head_on_stack() and destroy_rcu_head_on_stack() calls
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* are needed for dynamic initialization and destruction of rcu_head
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* on the stack, and init_rcu_head()/destroy_rcu_head() are needed for
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* dynamic initialization and destruction of statically allocated rcu_head
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* structures. However, rcu_head structures allocated dynamically in the
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* heap don't need any initialization.
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*/
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#ifdef CONFIG_DEBUG_OBJECTS_RCU_HEAD
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void init_rcu_head(struct rcu_head *head);
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