When using the old mount API, the linux kernel displays a warning for filesystems that lack support for timestamps after 2038. This same warning does not display when using the new mount API (fsopen/fsconfig/fsmount) util-linux 2.39 and higher use the new mount API when available which means the warning is effectively invisible for distributions with the newer util-linux. I noticed this after upgrading a box from Debian Bookworm to Trixie, but its also reproducible with stock upstream kernels.
