Hi all, Kent and I went on a little sprint of figuring out if there were any pieces of bcachefs that we could steal for XFS. It turns out that there are -- the timestats code is useful for measuring delays due to lock contention, and thread_with_file will be very helpful for exporting filesystem metadata health events to userspace. So here's a pile of patchsets lifting those pieces of bcachefs to lib and fixing a bunch of bugs in them. These patches have already been soaking in Kent's testing tree (and -next) for a few days, but apparently not all of them got emailed so here I am blasting out the entire thing. If you want to see what XFS does with this, have a look at [1] and [2]. For 6.9 it'd be helpful to get these modules lifted. --Darrick [1] https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/log/?h=health-monitoring_2024-02-23 [2] https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/tag/?h=contention-timestats_2024-02-23
