ovl: make private mounts longterm

[linux-2.6-microblaze.git] / Documentation / filesystems / porting.rst

diff --git a/Documentation/filesystems/porting.rst b/Documentation/filesystems/porting.rst
index 26c0939..867036a 100644 (file)
--- a/Documentation/filesystems/porting.rst
+++ b/Documentation/filesystems/porting.rst
@@ -858,3 +858,10 @@ be misspelled d_alloc_anon().
 [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**
+
+clone_private_mount() returns a longterm mount now, so the proper destructor of
+its result is kern_unmount() or kern_unmount_array().