32 struct anon_vma {  struct
33 	struct anon_vma *root;		/* Root of this anon_vma tree */  argument
55 	struct anon_vma *parent;	/* Parent of this anon_vma */  argument
85 	struct anon_vma *anon_vma;  member
107 static inline void get_anon_vma(struct anon_vma *anon_vma)  in get_anon_vma()  argument
109 	atomic_inc(&anon_vma->refcount);  in get_anon_vma()
112 void __put_anon_vma(struct anon_vma *anon_vma);
114 static inline void put_anon_vma(struct anon_vma *anon_vma)  in put_anon_vma()  argument
116 	if (atomic_dec_and_test(&anon_vma->refcount))  in put_anon_vma()
117 		__put_anon_vma(anon_vma);  in put_anon_vma()
120 static inline void anon_vma_lock_write(struct anon_vma *anon_vma)  in anon_vma_lock_write()  argument
122 	down_write(&anon_vma->root->rwsem);  in anon_vma_lock_write()
125 static inline int anon_vma_trylock_write(struct anon_vma *anon_vma)  in anon_vma_trylock_write()  argument
127 	return down_write_trylock(&anon_vma->root->rwsem);  in anon_vma_trylock_write()
130 static inline void anon_vma_unlock_write(struct anon_vma *anon_vma)  in anon_vma_unlock_write()  argument
132 	up_write(&anon_vma->root->rwsem);  in anon_vma_unlock_write()
135 static inline void anon_vma_lock_read(struct anon_vma *anon_vma)  in anon_vma_lock_read()  argument
137 	down_read(&anon_vma->root->rwsem);  in anon_vma_lock_read()
140 static inline int anon_vma_trylock_read(struct anon_vma *anon_vma)  in anon_vma_trylock_read()  argument
142 	return down_read_trylock(&anon_vma->root->rwsem);  in anon_vma_trylock_read()
145 static inline void anon_vma_unlock_read(struct anon_vma *anon_vma)  in anon_vma_unlock_read()  argument
147 	up_read(&anon_vma->root->rwsem);  in anon_vma_unlock_read()
162 	if (likely(vma->anon_vma))  in anon_vma_prepare()
171 	VM_BUG_ON_VMA(vma->anon_vma != next->anon_vma, vma);  in anon_vma_merge()
175 struct anon_vma *folio_get_anon_vma(const struct folio *folio);
1011 	struct anon_vma *(*anon_lock)(const struct folio *folio,
1018 struct anon_vma *folio_lock_anon_vma_read(const struct folio *folio,