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extern size_t copy_to_user_std(size_t, void __user *, const void *);
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extern size_t strnlen_user_std(size_t, const char __user *);
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extern size_t strncpy_from_user_std(size_t, const char __user *, char *);
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extern int futex_atomic_cmpxchg_std(int __user *, int, int);
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extern int futex_atomic_op_std(int, int __user *, int, int *);
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extern int futex_atomic_cmpxchg_std(u32 *, u32 __user *, u32, u32);
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extern int futex_atomic_op_std(int, u32 __user *, int, int *);
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extern size_t copy_from_user_pt(size_t, const void __user *, void *);
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extern size_t copy_to_user_pt(size_t, void __user *, const void *);
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extern int futex_atomic_op_pt(int, int __user *, int, int *);
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extern int futex_atomic_cmpxchg_pt(int __user *, int, int);
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extern int futex_atomic_op_pt(int, u32 __user *, int, int *);
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extern int futex_atomic_cmpxchg_pt(u32 *, u32 __user *, u32, u32);
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#endif /* __ARCH_S390_LIB_UACCESS_H */