[Devel] [PATCH VZ10 v8 0/7] Add per-VE failcount support

[Vladimir Riabchun <vladimir.riabchun@virtuozzo.com>]

This patchset introduces per-VE failcount support.
We have several resources, that have per-VE limits,
the users might want to know what limit hits make
operations fail.

- Patch 1 is cosmetic, nothing special.
- Patches 2-4 change mount number and limit processing,
  unifying it with other resources. VE selftest is updated
  in patch 3.
- Patch 5 greatly reduces the amount of copy-pasted code
  by introducing some useful macros.
- Patch 6 adds per-VE failcount file.
- Patch 7 introduces new VE selftest, that checks mounts
  accounting, limits and failcount updates.

NOTE: for running new selftest this change should be applied on
top of "[PATCH VZ10 v2 0/3] Improvements for ve selftests" patchset.

https://virtuozzo.atlassian.net/browse/VSTOR-135520

Changes since v7:
 - Rebased on h10-6.12.0-211.52.1.20.x.vz10-ovz
 - After rebase old patch 2 has gone.
 - Reworked mount count covered ve_mount_reown after rebase.
 - Failcount patch now has fancy ve_failcount_inc macro that
   prints error report to both CT and host dmesg.
 - Selftest harness improvements were moved to a separate
   change. Only new selftest was left.
 - The selftest was completely reworked - some copy-paste dropped,
   number tracking changed due to fixed mount ownership.

Vladimir Riabchun (7):
  ve/ve.{h,c}: Farewell to spaces as indents
  ve/fs: Rework per-ve mount count
  selftests/ve: Update ve_ns_owner_test
  ve: Move from global VE mounts limit to per-VE limit
  ve/ve.c: Generate VE resource accessors using macros
  ve: Introduce per-VE failcount
  selftests/ve: Add mount accounting selftest

 fs/aio.c                                      |   1 +
 fs/namespace.c                                |  80 +--
 include/linux/ve.h                            |  35 +-
 kernel/bpf/syscall.c                          |   1 +
 kernel/ve/ve.c                                | 277 +++++-----
 kernel/ve/veowner.c                           |  19 -
 net/core/dev.c                                |  10 +-
 net/core/neighbour.c                          |   3 +-
 net/core/net_namespace.c                      |   4 +-
 tools/testing/selftests/ve/.gitignore         |   1 +
 tools/testing/selftests/ve/Makefile           |   1 +
 .../selftests/ve/ve_mount_accounting_test.c   | 489 ++++++++++++++++++
 tools/testing/selftests/ve/ve_ns_owner_test.c |  37 +-
 13 files changed, 736 insertions(+), 222 deletions(-)
 create mode 100644 tools/testing/selftests/ve/ve_mount_accounting_test.c

-- 
2.47.1

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