From: Wedson Almeida Filho <walmeida@xxxxxxxxxxxxx>
This makes it harder for accidental or malicious changes to
f2fs_xattr_handlers or f2fs_xattr_handler_map at runtime.
Cc: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Cc: Chao Yu <chao@xxxxxxxxxx>
Cc: linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Wedson Almeida Filho <walmeida@xxxxxxxxxxxxx>