27 struct anon_vma {  struct
28 	struct anon_vma *root;		/* Root of this anon_vma tree */  argument
47 	struct anon_vma *parent;	/* Parent of this anon_vma */  argument
75 	struct anon_vma *anon_vma;  member
98 static inline void get_anon_vma(struct anon_vma *anon_vma)  in get_anon_vma()  argument
100 	atomic_inc(&anon_vma->refcount);  in get_anon_vma()
103 void __put_anon_vma(struct anon_vma *anon_vma);
105 static inline void put_anon_vma(struct anon_vma *anon_vma)  in put_anon_vma()  argument
107 	if (atomic_dec_and_test(&anon_vma->refcount))  in put_anon_vma()
108 		__put_anon_vma(anon_vma);  in put_anon_vma()
111 static inline void anon_vma_lock_write(struct anon_vma *anon_vma)  in anon_vma_lock_write()  argument
113 	down_write(&anon_vma->root->rwsem);  in anon_vma_lock_write()
116 static inline void anon_vma_unlock_write(struct anon_vma *anon_vma)  in anon_vma_unlock_write()  argument
118 	up_write(&anon_vma->root->rwsem);  in anon_vma_unlock_write()
121 static inline void anon_vma_lock_read(struct anon_vma *anon_vma)  in anon_vma_lock_read()  argument
123 	down_read(&anon_vma->root->rwsem);  in anon_vma_lock_read()
126 static inline void anon_vma_unlock_read(struct anon_vma *anon_vma)  in anon_vma_unlock_read()  argument
128 	up_read(&anon_vma->root->rwsem);  in anon_vma_unlock_read()
144 	VM_BUG_ON_VMA(vma->anon_vma != next->anon_vma, vma);  in anon_vma_merge()
148 struct anon_vma *page_get_anon_vma(struct page *page);
220 struct anon_vma *page_lock_anon_vma_read(struct page *page);
221 void page_unlock_anon_vma_read(struct anon_vma *anon_vma);
238 	struct anon_vma *(*anon_lock)(struct page *page);