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-rw-r--r--Documentation/filesystems/porting.rst12
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/filesystems/porting.rst b/Documentation/filesystems/porting.rst
index 78c3d07c0c08..7233b04668fc 100644
--- a/Documentation/filesystems/porting.rst
+++ b/Documentation/filesystems/porting.rst
@@ -1297,3 +1297,15 @@ Several functions are renamed:
- user_path_create -> start_creating_user_path
- user_path_locked_at -> start_removing_user_path_at
- done_path_create -> end_creating_path
+
+---
+
+**mandatory**
+
+Calling conventions for vfs_parse_fs_string() have changed; it does *not*
+take length anymore (value ? strlen(value) : 0 is used). If you want
+a different length, use
+
+ vfs_parse_fs_qstr(fc, key, &QSTR_LEN(value, len))
+
+instead.