Hi all, This series introduces simple usage and performance counters for the online fsck subsystem. The goal here is to enable developers and sysadmins to look at summary counts of how many objects were checked and repaired; what the outcomes were; and how much time the kernel has spent on these operations. The counter file is exposed in debugfs because that's easier than cramming it into the device model, and debugfs doesn't have rules against complex file contents, unlike sysfs. If you're going to start using this mess, you probably ought to just pull from my git trees, which are linked below. This is an extraordinary way to destroy everything. Enjoy! Comments and questions are, as always, welcome. --D kernel git tree: https://git.kernel.org/cgit/linux/kernel/git/djwong/xfs-linux.git/log/?h=scrub-usage-stats --- fs/xfs/Kconfig | 17 ++ fs/xfs/Makefile | 1 fs/xfs/scrub/repair.c | 11 + fs/xfs/scrub/repair.h | 7 + fs/xfs/scrub/scrub.c | 11 + fs/xfs/scrub/stats.c | 405 +++++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/scrub/stats.h | 59 +++++++ fs/xfs/xfs_linux.h | 1 fs/xfs/xfs_mount.c | 9 + fs/xfs/xfs_mount.h | 4 fs/xfs/xfs_super.c | 53 ++++++ fs/xfs/xfs_super.h | 2 12 files changed, 569 insertions(+), 11 deletions(-) create mode 100644 fs/xfs/scrub/stats.c create mode 100644 fs/xfs/scrub/stats.h
