12 	.mmap_lock = __RWSEM_INITIALIZER((name).mmap_lock),
65 	lockdep_assert_held(&mm->mmap_lock);  in mmap_assert_locked()
66 	VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm);  in mmap_assert_locked()
71 	lockdep_assert_held_write(&mm->mmap_lock);  in mmap_assert_write_locked()
72 	VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm);  in mmap_assert_write_locked()
102 	init_rwsem(&mm->mmap_lock);  in mmap_init_lock()
108 	down_write(&mm->mmap_lock);  in mmap_write_lock()
115 	down_write_nested(&mm->mmap_lock, subclass);  in mmap_write_lock_nested()
124 	ret = down_write_killable(&mm->mmap_lock);  in mmap_write_lock_killable()
133 	up_write(&mm->mmap_lock);  in mmap_write_unlock()
140 	downgrade_write(&mm->mmap_lock);  in mmap_write_downgrade()
146 	down_read(&mm->mmap_lock);  in mmap_read_lock()
155 	ret = down_read_killable(&mm->mmap_lock);  in mmap_read_lock_killable()
165 	ret = down_read_trylock(&mm->mmap_lock) != 0;  in mmap_read_trylock()
173 	up_read(&mm->mmap_lock);  in mmap_read_unlock()
179 	up_read_non_owner(&mm->mmap_lock);  in mmap_read_unlock_non_owner()
184 	return rwsem_is_contended(&mm->mmap_lock);  in mmap_lock_is_contended()