[LTP] [PATCH 6.1.y 00/18] Backport "make svc_stat per-net instead of global"

[cel@kernel.org]

From: Chuck Lever <chuck.lever@oracle.com>

Following up on

https://lore.kernel.org/linux-nfs/d4b235df-4ee5-4824-9d48-e3b3c1f1f4d1@oracle.com/

Here is a backport series targeting origin/linux-6.1.y that closes
the information leak described in the above thread.

I started with v6.1.y because that is the most recent LTS kernel
and thus the closest to upstream. I plan to look at 5.15 and 5.10
LTS too if this series is applied to v6.1.y.

Review comments welcome.

Chuck Lever (6):
  NFSD: Refactor nfsd_reply_cache_free_locked()
  NFSD: Rename nfsd_reply_cache_alloc()
  NFSD: Replace nfsd_prune_bucket()
  NFSD: Refactor the duplicate reply cache shrinker
  NFSD: Rewrite synopsis of nfsd_percpu_counters_init()
  NFSD: Fix frame size warning in svc_export_parse()

Jeff Layton (2):
  nfsd: move reply cache initialization into nfsd startup
  nfsd: move init of percpu reply_cache_stats counters back to
    nfsd_init_net

Josef Bacik (10):
  sunrpc: don't change ->sv_stats if it doesn't exist
  nfsd: stop setting ->pg_stats for unused stats
  sunrpc: pass in the sv_stats struct through svc_create_pooled
  sunrpc: remove ->pg_stats from svc_program
  sunrpc: use the struct net as the svc proc private
  nfsd: rename NFSD_NET_* to NFSD_STATS_*
  nfsd: expose /proc/net/sunrpc/nfsd in net namespaces
  nfsd: make all of the nfsd stats per-network namespace
  nfsd: remove nfsd_stats, make th_cnt a global counter
  nfsd: make svc_stat per-network namespace instead of global

 fs/lockd/svc.c             |   3 -
 fs/nfs/callback.c          |   3 -
 fs/nfsd/export.c           |  32 ++++--
 fs/nfsd/export.h           |   4 +-
 fs/nfsd/netns.h            |  25 ++++-
 fs/nfsd/nfs4proc.c         |   6 +-
 fs/nfsd/nfscache.c         | 201 ++++++++++++++++++++++---------------
 fs/nfsd/nfsctl.c           |  24 ++---
 fs/nfsd/nfsd.h             |   1 +
 fs/nfsd/nfsfh.c            |   3 +-
 fs/nfsd/nfssvc.c           |  24 +++--
 fs/nfsd/stats.c            |  52 ++++------
 fs/nfsd/stats.h            |  83 ++++++---------
 fs/nfsd/trace.h            |  22 ++++
 fs/nfsd/vfs.c              |   6 +-
 include/linux/sunrpc/svc.h |   5 +-
 net/sunrpc/stats.c         |   2 +-
 net/sunrpc/svc.c           |  36 ++++---
 18 files changed, 301 insertions(+), 231 deletions(-)

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2.45.1