7 	.mmap_lock = __RWSEM_INITIALIZER((name).mmap_lock),
11 	init_rwsem(&mm->mmap_lock);  in mmap_init_lock()
16 	down_write(&mm->mmap_lock);  in mmap_write_lock()
21 	down_write_nested(&mm->mmap_lock, subclass);  in mmap_write_lock_nested()
26 	return down_write_killable(&mm->mmap_lock);  in mmap_write_lock_killable()
31 	return down_write_trylock(&mm->mmap_lock) != 0;  in mmap_write_trylock()
36 	up_write(&mm->mmap_lock);  in mmap_write_unlock()
41 	downgrade_write(&mm->mmap_lock);  in mmap_write_downgrade()
46 	down_read(&mm->mmap_lock);  in mmap_read_lock()
51 	return down_read_killable(&mm->mmap_lock);  in mmap_read_lock_killable()
56 	return down_read_trylock(&mm->mmap_lock) != 0;  in mmap_read_trylock()
61 	up_read(&mm->mmap_lock);  in mmap_read_unlock()
66 	if (down_read_trylock(&mm->mmap_lock)) {  in mmap_read_trylock_non_owner()
67 		rwsem_release(&mm->mmap_lock.dep_map, _RET_IP_);  in mmap_read_trylock_non_owner()
75 	up_read_non_owner(&mm->mmap_lock);  in mmap_read_unlock_non_owner()
80 	lockdep_assert_held(&mm->mmap_lock);  in mmap_assert_locked()
81 	VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm);  in mmap_assert_locked()
86 	lockdep_assert_held_write(&mm->mmap_lock);  in mmap_assert_write_locked()
87 	VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm);  in mmap_assert_write_locked()
92 	return rwsem_is_contended(&mm->mmap_lock);  in mmap_lock_is_contended()