Linux Drops Multi-Grain Timestamps in Latest Release
The multi-grain timestamps feature, which was intended to address issues with coarse-grained timestamps in the Linux kernel, has been removed after a few weeks due to problems it exposed. The feature was meant to provide more robust timestamp updates for creation/modification times, particularly for file systems like NFS. However, the feature caused subtle bugs and performance impacts, leading to its removal from the kernel. The developers will explore alternative solutions that involve exposing fine-grained timestamps only internally to NFS and not to userspace.