- fixes manual_umount_client() in conf_sanity.sh to handle --force correctly as it is used by number of tests (this part should be missed in tests porting);

- add assert before decref mgc refcounter;
- fixed possible leaked niduuid in case of error;
- kill @rc in server_put_super() as it is not used;
- use OBD_FAIL_CHECK_ORSET in ptlrpc_check_set() to avoid assert;
- enable test_45 as it is working now.

 add b_hd_params_tree branch

i=Alexander.Zarochentsev
cos new test_33a

r=shadow,johann

- make sure that no new inflight rpcs may come after ptlrpcd_deactivate_import() for both
synchronous and asynchronous sending. To do so we make sure that imp_inflight++ is done only when
permission is granted by ptlrpc_import_delay_req() which makes decision should req be sent,
deferred or killed as import is not in the state to send it in observable future. For async
sending, rpc is only counted inflight when its added to sending or delaying list instead of just
adding it to set for processing.

This fixes assert in ptlrpc_invalidate_import() and as number of other issues;

- synchronize imp_inflight and the presence on sending or delaying list for ptlrpc_queue_wait()
case. So that, now it is guaranteed that if im_inflight != 0 we may always find hanging rpc either
in sending or in delaying list;

- make sure that in ptlrcp_queue_wait() we remove rpc from sending or delaying list and dec
inflight only after ptlrpc_unregister_reply() is done. This way we make sure that accounting is
correct. Rpc can't be returned to the pool or counted finished until lnet lets us go with finished
reply unlink;

- check for inflight and rq_list in pinger;

- comments, cleanups;

b=14166

b=17511
r=johann,adilger

  - removes deadlock possibility by disabling rehash in hash_del() operations and moving hash_add()
    out of spin_locks when calling. Hash table has own mechanisms for protecting its structures and it
    also has hash_add_unique() method for using in concurrent run contexts;

    - fixed missed lh_put() in hash_add_unique() which led to extra refs in some cases (extra ref to
    export) and inability to cleanup;

    - fixed __lustre_hash_set_theta() which set @max theta into ->lh_min_theta;

    - in lustre_hash_rehash_size() disable rehash also for the case when new and old hash sizes equal
    in corner cases (max_size or min_size). Before this fix it could be possible to do needless
    rehashes when size is actually did not change but we do this expensive operation;

    - disable rehash in hash_add_unique() if no actual add happened since entry with the same key is
    already found in the table;

    - some cleanups in hash table code;

i=Adilger
replace cleanup_and_setup_lustre fn by check_and_setup_lustre fn

b=17235
i=adigler@sun.com

add -r 'deletepath' option to createmany.c; createmany.c code cleanup.

i=Adilger
check config if lustre is mounted before acc-sm run

i=Brian
assert_DIR cleanup

r=tappro,johann

- proper locking in rq pool freeing time

- mark 45 HEAD_EXCEPT as it fails in HEAD (failure is not related to 17310 where this test was added) and new bug for it is filed - 17617.

mode of module_param is not correct

Support zero-copy receive of Chelsio driver

b=15093
i=Isaac
i=Maxim

r=johann,shadow

- fixes in ptlrcp to handle possible long reply unlink for HEAD.

b=17357

b=17357

Back the changes.

b=16578
o=adilger

A faster way to get long string.

i=Alexander.Zarochentsev
i=Adilger
COS replay-dual test_21b

b=15393
i=alex.zhuravlev@sun.com
i=tappro@sun.com

Commit on sharing. Eliminate inter-client dependencies between
uncommitted transactions by doing transaction commits.
Thereby clients may recovery independently.

i=Adilger
correct remote_[mds|ost] fn to work correctly on configuration with
several MDS/OSS nodes

b=17357
i=johann, yangsheng

Fixed the endian issues for HEAD.
Author: shadow

b=17083
i=yury.umanets
i=nikita.danilov

Before destroying the whole mdt stack, just wait a little bit for the
obd_zombie_impexp_thread to destroy all the exports.

removing mfd from 'closing_list' to fix ASSERTION(list_empty(&mfd->mfd_list))
in mdt_mfd_free in mdt_open.c

i=robert.read

b=17371
i=Johann Lombardi
i=Oleg Drokin

fix a possible race between umount  and requeue thread

b=16438
  i=adilger
  i=girish

  Mounting a filesystem with extents feature will fail on big-endian systems since ext3-based ldiskfs is not supported on big-endian systems. This can be over-riden with "bigendian_extents" mount option.

fix panic on debug_daemon
b=15878
i=shadow
i=zhenyu.xu

b=16438
i=adilger
i=girish

Mounting a filesystem with extents feature will fail on big-endian systems since ext3-based ldiskfs is not supported on big-endian systems. This can be over-riden with "bigendian_extents" mount option.

 - do cache invalidation once read is complete

b=15715
r=adilger,green

Fixed the race of destroying and enqueuing a ldlm lock at OST side.

b=16578
i=adilger

Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
Details    : If there is no extra space in the request for early cancels,
             ldlm_req_handles_avail() returns 0 instead of a negative value.

Replace LBUG with RETURN(-EINVAL) to avoid crashing
b=5135
i=adilger
i=johann

  b:12512
  i:grev, adilger

  b:16389
  i:rread,nathan

i=adilger

 - always flush page left by partial truncate

i=Nikita
sanity test_100 fix

i=Nikita
test_53 fix

Remove trailing whitespace

o=Robert.Read
i=grev
test_27u fix