Changes since last update:
- Fix a stale kernel memory exposure when logging inodes.
- Fix some build problems with CONFIG_XFS_RT=n
- Don't change inode mode if the acl write fails, leaving the file totally
  inaccessible.
- Fix a dangling pointer problem when removing an attr fork under memory
  pressure.
- Don't crash while trying to invalidate a null buffer associated with a
  corrupt metadata pointer.