[RFC v6.8-rc6 0/7] dlm: fix race between callback and remove message

[Alexander Aring <aahringo@redhat.com>]

Hi,

this patch fixes some race I hit between the last callback from a lkb
and a potential remove message if this callback was not delivered yet.
The issue has something todo that we held in some situation the lkb
reference which we should not. There are also some other places affected
(e.g. debugfs dump) that I am also working on to solve them. I tried to
split my work in several patches to reduce the amount of changes in the
fix of patch "dlm: fix race between final callback and remove".

I also found a issue with the lvb copy for user space locks I introduced
that should be fixed, see "dlm: fix user space lock decision to copy
lvb".

- Alex

Alexander Aring (7):
  dlm: fix user space lock decision to copy lvb
  dlm: remove lkb from ast bast tracepoints
  dlm: remove callback queue debugfs functionality
  dlm: move lkb debug information out of callback
  dlm: combine switch case fail and default statements
  dlm: fix race between final callback and remove
  dlm: remove callback reference counting

 fs/dlm/ast.c               | 203 +++++++++++++++----------------------
 fs/dlm/ast.h               |  13 +--
 fs/dlm/debug_fs.c          |  98 +-----------------
 fs/dlm/dlm_internal.h      |  66 +++++++-----
 fs/dlm/lock.c              |  24 ++---
 fs/dlm/memory.c            |   4 -
 fs/dlm/user.c              | 107 +++++--------------
 include/trace/events/dlm.h |  46 ++++-----
 8 files changed, 182 insertions(+), 379 deletions(-)

-- 
2.43.0