On Mon, Nov 25, 2019 at 8:46 AM J . Bruce Fields <bfields@xxxxxxxxxxxx> wrote: > > On Sun, Nov 24, 2019 at 09:31:45PM +0200, Amir Goldstein wrote: > > Push clamping timestamps down the call stack into notify_change(), so > > in-kernel callers like nfsd and overlayfs will get similar timestamp > > set behavior as utimes. > > So, nfsd has always bypassed timestamp_truncate() and we've never > noticed till now? What are the symptoms? (Do timestamps go backwards > after cache eviction on filesystems with large time granularity?) > > Looks like generic/402 has never run in my tests: > > generic/402 [not run] no kernel support for y2038 sysfs switch You need this in your xfstest: https://patchwork.kernel.org/patch/11049745/ . The test has been updated recently. And, you need a change like for overlayfs as Amir pointed out. -Deepa
