NS_GET_USERNS      10 include/uapi/linux/nsfs.h #define NS_GET_USERNS		_IO(NSIO, 0x1)
NS_GET_USERNS      17 tools/testing/selftests/nsfs/owner.c #define NS_GET_USERNS   _IO(NSIO, 0x1)
NS_GET_USERNS      24 tools/testing/selftests/nsfs/pidns.c #define NS_GET_USERNS   _IO(NSIO, 0x1)