Defined in 2 files as a macro:

• include/uapi/linux/userfaultfd.h, line 165 (as a macro)
• tools/include/uapi/linux/userfaultfd.h, line 165 (as a macro)

Referenced in 2 files:

• mm/userfaultfd.c, line 3229
• tools/testing/selftests/mm/uffd-common.c, line 589