diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 65872340e301eb51bbb9e418f2e4c6e0495dc45c..133be3c689af2f4db0661f54930c42045b66afd0 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  file.c - part of debugfs, a tiny little debug file system
  *
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 9dca4da059b322fdb42e611999b4a507cc974bf1..7c107b3b9c935126726cb8c023556975d9b66635 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  inode.c - part of debugfs, a tiny little debug file system
  *
diff --git a/fs/debugfs/internal.h b/fs/debugfs/internal.h
index cb1e8139c398f141b0692da3062c45396fde8e21..b9567541b7378683c15e066dbb6416bde11a928f 100644
--- a/fs/debugfs/internal.h
+++ b/fs/debugfs/internal.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  internal.h - declarations internal to debugfs
  *
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 9f821a43bb0dd9f67f1a0c213a1390324eccf896..7beab3fd2f1aa43472c09e09f35e6770182ec1ad 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  debugfs.h - a tiny little debug file system
  *