31 struct anon_vma {  struct
32 	struct anon_vma *root;		/* Root of this anon_vma tree */  argument
54 	struct anon_vma *parent;	/* Parent of this anon_vma */  argument
84 	struct anon_vma *anon_vma;  member
106 static inline void get_anon_vma(struct anon_vma *anon_vma)  in get_anon_vma()  argument
108 	atomic_inc(&anon_vma->refcount);  in get_anon_vma()
111 void __put_anon_vma(struct anon_vma *anon_vma);
113 static inline void put_anon_vma(struct anon_vma *anon_vma)  in put_anon_vma()  argument
115 	if (atomic_dec_and_test(&anon_vma->refcount))  in put_anon_vma()
116 		__put_anon_vma(anon_vma);  in put_anon_vma()
119 static inline void anon_vma_lock_write(struct anon_vma *anon_vma)  in anon_vma_lock_write()  argument
121 	down_write(&anon_vma->root->rwsem);  in anon_vma_lock_write()
124 static inline void anon_vma_unlock_write(struct anon_vma *anon_vma)  in anon_vma_unlock_write()  argument
126 	up_write(&anon_vma->root->rwsem);  in anon_vma_unlock_write()
129 static inline void anon_vma_lock_read(struct anon_vma *anon_vma)  in anon_vma_lock_read()  argument
131 	down_read(&anon_vma->root->rwsem);  in anon_vma_lock_read()
134 static inline int anon_vma_trylock_read(struct anon_vma *anon_vma)  in anon_vma_trylock_read()  argument
136 	return down_read_trylock(&anon_vma->root->rwsem);  in anon_vma_trylock_read()
139 static inline void anon_vma_unlock_read(struct anon_vma *anon_vma)  in anon_vma_unlock_read()  argument
141 	up_read(&anon_vma->root->rwsem);  in anon_vma_unlock_read()
156 	if (likely(vma->anon_vma))  in anon_vma_prepare()
165 	VM_BUG_ON_VMA(vma->anon_vma != next->anon_vma, vma);  in anon_vma_merge()
169 struct anon_vma *folio_get_anon_vma(struct folio *folio);
468 	struct anon_vma *(*anon_lock)(struct folio *folio,
475 struct anon_vma *folio_lock_anon_vma_read(struct folio *folio,