tree 778e6ebb516e7a6301305b077e31ee40d9fe96c2
parent fee25ce12504ff071254fd213055c3f1d3004622
author Al Viro <viro@zeniv.linux.org.uk> 1453510067 -0500
committer Mike Marshall <hubcap@omnibond.com> 1453572192 -0500

orangefs: hopefully saner op refcounting and locking

* create with refcount 1
* make op_release() decrement and free if zero (i.e. old put_op()
  has become that).
* mark when submitter has given up waiting; from that point nobody
  else can move between the lists, change state, etc.
* have daemon read/write_iter grab a reference when picking op
  and *always* give it up in the end
* don't put into hash until we know it's been successfully passed to
  daemon

* move op->lock _lower_ than htab_in_progress_lock (and make sure
  to take it in purge_inprogress_ops())

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>