--- zzzz-none-000/linux-5.4.213/Documentation/filesystems/porting.rst	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/Documentation/filesystems/porting.rst	2024-08-14 09:01:24.000000000 +0000
@@ -858,3 +858,12 @@
 [should've been added in 2016] stale comment in finish_open() nonwithstanding,
 failure exits in ->atomic_open() instances should *NOT* fput() the file,
 no matter what.  Everything is handled by the caller.
+
+---
+
+**mandatory**
+
+export_operations ->encode_fh() no longer has a default implementation to
+encode FILEID_INO32_GEN* file handles.
+Filesystems that used the default implementation may use the generic helper
+generic_encode_ino32_fh() explicitly.