57 	 * If vma is detached then only vma_mark_attached() can raise the  in __vma_enter_locked()
72 static inline void __vma_exit_locked(struct vm_area_struct *vma, bool *detached)  in __vma_exit_locked()  argument
74 	*detached = refcount_sub_and_test(VMA_LOCK_OFFSET, &vma->vm_refcnt);  in __vma_exit_locked()
98 		bool detached;  in __vma_start_write()  local
100 		__vma_exit_locked(vma, &detached);  in __vma_start_write()
101 		WARN_ON_ONCE(detached); /* vma should remain attached */  in __vma_start_write()
120 		/* Wait until vma is detached with no readers. */  in vma_mark_detached()
122 			bool detached;  in vma_mark_detached()  local
124 			__vma_exit_locked(vma, &detached);  in vma_mark_detached()
125 			WARN_ON_ONCE(!detached);  in vma_mark_detached()
225 		 * Retry immediately if the vma gets detached from under us.  in lock_next_vma()