Defined in 3 files as a macro:

• include/uapi/linux/pidfd.h, line 114 (as a macro)
• samples/vfs/samples-vfs.h, line 97 (as a macro)
• tools/testing/selftests/pidfd/pidfd.h, line 96 (as a macro)

Referenced in 6 files:

• fs/pidfs.c
  • line 505
  • line 589
• samples/vfs/mountinfo.c, line 243
• samples/vfs/samples-vfs.h, line 96
• samples/vfs/test-list-all-mounts.c, line 82
• tools/testing/selftests/pidfd/pidfd.h, line 95
• tools/testing/selftests/pidfd/pidfd_setns_test.c, line 43