staging: lustre: ldlm: ASSERTION(flock->blocking_export!=0) failed

Whole policy structure was zeroed twice. Once during enqueue
and second time during resend or replay. Policy structure
should be initialized with default values only in ldlm_lock_new().
Signed-off-by: NAndriy Skulysh <andriy.skulysh@seagate.com>
Signed-off-by: NBen Evans <bevans@cray.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8349
Seagate-bug-id: MRP-2536, MRP-2909
Reviewed-on: http://review.whamcloud.com/21061Reviewed-by: NAlexander Boyko <alexander.boyko@seagate.com>
Reviewed-by: NVitaly Fertman <vitaly.fertman@seagate.com>
Reviewed-by: NMike Pershin <mike.pershin@intel.com>
Reviewed-by: NOleg Drokin <oleg.drokin@intel.com>
Signed-off-by: NJames Simmons <jsimmons@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/ldlm/ldlm_extent.c

@@ -243,7 +243,6 @@ void ldlm_extent_unlink_lock(struct ldlm_lock *lock)
 void ldlm_extent_policy_wire_to_local(const union ldlm_wire_policy_data *wpolicy,
 				      union ldlm_policy_data *lpolicy)
 {
-	memset(lpolicy, 0, sizeof(*lpolicy));
 	lpolicy->l_extent.start = wpolicy->l_extent.start;
 	lpolicy->l_extent.end = wpolicy->l_extent.end;
 	lpolicy->l_extent.gid = wpolicy->l_extent.gid;

drivers/staging/lustre/lustre/ldlm/ldlm_flock.c

@@ -615,7 +615,6 @@ EXPORT_SYMBOL(ldlm_flock_completion_ast);
 void ldlm_flock_policy_wire_to_local(const union ldlm_wire_policy_data *wpolicy,
 				     union ldlm_policy_data *lpolicy)
 {
-	memset(lpolicy, 0, sizeof(*lpolicy));
 	lpolicy->l_flock.start = wpolicy->l_flock.lfw_start;
 	lpolicy->l_flock.end = wpolicy->l_flock.lfw_end;
 	lpolicy->l_flock.pid = wpolicy->l_flock.lfw_pid;

drivers/staging/lustre/lustre/ldlm/ldlm_inodebits.c

@@ -57,7 +57,6 @@
 void ldlm_ibits_policy_wire_to_local(const union ldlm_wire_policy_data *wpolicy,
 				     union ldlm_policy_data *lpolicy)
 {
-	memset(lpolicy, 0, sizeof(*lpolicy));
 	lpolicy->l_inodebits.bits = wpolicy->l_inodebits.bits;
 }