33 struct anon_vma {  struct
34 	struct anon_vma *root;		/* Root of this anon_vma tree */  argument
53 	struct anon_vma *parent;	/* Parent of this anon_vma */  argument
83 	struct anon_vma *anon_vma;  member
109 static inline void get_anon_vma(struct anon_vma *anon_vma)  in get_anon_vma()  argument
111 	atomic_inc(&anon_vma->refcount);  in get_anon_vma()
114 void __put_anon_vma(struct anon_vma *anon_vma);
116 static inline void put_anon_vma(struct anon_vma *anon_vma)  in put_anon_vma()  argument
118 	if (atomic_dec_and_test(&anon_vma->refcount))  in put_anon_vma()
119 		__put_anon_vma(anon_vma);  in put_anon_vma()
122 static inline void anon_vma_lock_write(struct anon_vma *anon_vma)  in anon_vma_lock_write()  argument
124 	down_write(&anon_vma->root->rwsem);  in anon_vma_lock_write()
127 static inline void anon_vma_unlock_write(struct anon_vma *anon_vma)  in anon_vma_unlock_write()  argument
129 	up_write(&anon_vma->root->rwsem);  in anon_vma_unlock_write()
132 static inline void anon_vma_lock_read(struct anon_vma *anon_vma)  in anon_vma_lock_read()  argument
134 	down_read(&anon_vma->root->rwsem);  in anon_vma_lock_read()
137 static inline int anon_vma_trylock_read(struct anon_vma *anon_vma)  in anon_vma_trylock_read()  argument
139 	return down_read_trylock(&anon_vma->root->rwsem);  in anon_vma_trylock_read()
142 static inline void anon_vma_unlock_read(struct anon_vma *anon_vma)  in anon_vma_unlock_read()  argument
144 	up_read(&anon_vma->root->rwsem);  in anon_vma_unlock_read()
159 	if (likely(vma->anon_vma))  in anon_vma_prepare()
168 	VM_BUG_ON_VMA(vma->anon_vma != next->anon_vma, vma);  in anon_vma_merge()
172 struct anon_vma *page_get_anon_vma(struct page *page);
293 	struct anon_vma *(*anon_lock)(struct page *page,
304 struct anon_vma *page_lock_anon_vma_read(struct page *page,
306 void page_unlock_anon_vma_read(struct anon_vma *anon_vma);