afs: security: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
The use of "rcu_assign_pointer()" is NULLing out the pointer. According to RCU_INIT_POINTER()'s block comment: "1. This use of RCU_INIT_POINTER() is NULLing out the pointer" it is better to use it instead of rcu_assign_pointer() because it has a smaller overhead. The following Coccinelle semantic patch was used: @@ @@ - rcu_assign_pointer + RCU_INIT_POINTER (..., NULL) Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com>
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@ -114,7 +114,7 @@ void afs_clear_permits(struct afs_vnode *vnode)
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mutex_lock(&vnode->permits_lock);
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permits = vnode->permits;
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rcu_assign_pointer(vnode->permits, NULL);
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RCU_INIT_POINTER(vnode->permits, NULL);
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mutex_unlock(&vnode->permits_lock);
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if (permits)
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