fault_in_user_writeable

函数名称：ault_in_user_writeable() - Fault in user address and verify RW access*@uaddr: pointer to faulting user space address* Slow path to fixup the fault we just took in the atomic write* access to @uaddr

函数原型：static int fault_in_user_writeable(unsigned int __user *uaddr)

返回类型：int

参数：

类型	参数	名称
unsigned int __user *	uaddr

**调用者**
名称	描述
futex_wake_op	Wake up all waiters hashed on the physical page that is mapped* to this virtual address:
futex_requeue	ex_requeue() - Requeue waiters from uaddr1 to uaddr2@uaddr1: source futex user address@flags: futex flags (FLAGS_SHARED, etc
fixup_pi_state_owner
futex_lock_pi	Userspace tried a 0 -> TID atomic transition of the futex value* and failed. The kernel side here does the whole locking operation:* if there are waiters then it will block as a consequence of relying* on rt-mutexes, it does PI, etc
futex_unlock_pi	Userspace attempted a TID -> 0 atomic transition, and failed.* This is the in-kernel slowpath: we look up the PI state (if any),* and do the rt-mutex unlock.
handle_futex_death	Process a futex-list entry, check whether it's owned by the* dying task, and do notification if so:

函数逻辑报告