29 struct anon_vma {  struct
30 	struct anon_vma *root;		/* Root of this anon_vma tree */  argument
49 	struct anon_vma *parent;	/* Parent of this anon_vma */  argument
79 	struct anon_vma *anon_vma;  member
105 static inline void get_anon_vma(struct anon_vma *anon_vma)  in get_anon_vma()  argument
107 	atomic_inc(&anon_vma->refcount);  in get_anon_vma()
110 void __put_anon_vma(struct anon_vma *anon_vma);
112 static inline void put_anon_vma(struct anon_vma *anon_vma)  in put_anon_vma()  argument
114 	if (atomic_dec_and_test(&anon_vma->refcount))  in put_anon_vma()
115 		__put_anon_vma(anon_vma);  in put_anon_vma()
118 static inline void anon_vma_lock_write(struct anon_vma *anon_vma)  in anon_vma_lock_write()  argument
120 	down_write(&anon_vma->root->rwsem);  in anon_vma_lock_write()
123 static inline void anon_vma_unlock_write(struct anon_vma *anon_vma)  in anon_vma_unlock_write()  argument
125 	up_write(&anon_vma->root->rwsem);  in anon_vma_unlock_write()
128 static inline void anon_vma_lock_read(struct anon_vma *anon_vma)  in anon_vma_lock_read()  argument
130 	down_read(&anon_vma->root->rwsem);  in anon_vma_lock_read()
133 static inline void anon_vma_unlock_read(struct anon_vma *anon_vma)  in anon_vma_unlock_read()  argument
135 	up_read(&anon_vma->root->rwsem);  in anon_vma_unlock_read()
150 	if (likely(vma->anon_vma))  in anon_vma_prepare()
159 	VM_BUG_ON_VMA(vma->anon_vma != next->anon_vma, vma);  in anon_vma_merge()
163 struct anon_vma *page_get_anon_vma(struct page *page);
249 struct anon_vma *page_lock_anon_vma_read(struct page *page);
250 void page_unlock_anon_vma_read(struct anon_vma *anon_vma);
271 	struct anon_vma *(*anon_lock)(struct page *page);