From 454b3bb942fe6ca9c1e4e917c619b0434147fd9f Mon Sep 17 00:00:00 2001
From: pschwan <pschwan>
Date: Mon, 24 Jun 2002 03:32:43 +0000
Subject: [PATCH] more locking hackery

---
 lustre/ldlm/ldlm_lock.c    | 24 +++++++++++++-----------
 lustre/ldlm/ldlm_request.c | 10 +++++-----
 2 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/lustre/ldlm/ldlm_lock.c b/lustre/ldlm/ldlm_lock.c
index ac10c5f..e54a0a9 100644
--- a/lustre/ldlm/ldlm_lock.c
+++ b/lustre/ldlm/ldlm_lock.c
@@ -594,18 +594,21 @@ int ldlm_local_lock_match(struct ldlm_namespace *ns, __u64 *res_id, __u32 type,
         ldlm_resource_put(res);
         l_unlock(&ns->ns_lock);
 
+        wait_event_interruptible(lock->l_waitq, lock->l_req_mode ==
+                                 lock->l_granted_mode);
+
         return rc;
 }
 
 /* Must be called without the resource lock held.  Returns a referenced,
  * unlocked ldlm_lock. */
-ldlm_error_t ldlm_local_lock_create(struct ldlm_namespace *ns,
-                                    struct lustre_handle *parent_lock_handle,
-                                    __u64 *res_id, __u32 type,
-                                     ldlm_mode_t mode,
-                                    void *data,
-                                    __u32 data_len,
-                                    struct lustre_handle *lockh)
+struct ldlm_lock *
+ldlm_local_lock_create(struct ldlm_namespace *ns,
+                       struct lustre_handle *parent_lock_handle,
+                       __u64 *res_id, __u32 type,
+                       ldlm_mode_t mode,
+                       void *data,
+                       __u32 data_len)
 {
         struct ldlm_resource *res, *parent_res = NULL;
         struct ldlm_lock *lock, *parent_lock;
@@ -616,12 +619,12 @@ ldlm_error_t ldlm_local_lock_create(struct ldlm_namespace *ns,
 
         res = ldlm_resource_get(ns, parent_res, res_id, type, 1);
         if (res == NULL)
-                RETURN(-ENOMEM);
+                RETURN(NULL);
 
         lock = ldlm_lock_new(parent_lock, res);
         if (lock == NULL) {
                 ldlm_resource_put(res);
-                RETURN(-ENOMEM);
+                RETURN(NULL);
         }
 
         lock->l_req_mode = mode;
@@ -629,8 +632,7 @@ ldlm_error_t ldlm_local_lock_create(struct ldlm_namespace *ns,
         lock->l_data_len = data_len;
         ldlm_lock_addref(lock, mode);
 
-        ldlm_object2handle(lock, lockh);
-        return ELDLM_OK;
+        return lock;
 }
 
 /* Must be called with lock->l_lock and lock->l_resource->lr_lock not held */
diff --git a/lustre/ldlm/ldlm_request.c b/lustre/ldlm/ldlm_request.c
index b079b3b..d81c6b3 100644
--- a/lustre/ldlm/ldlm_request.c
+++ b/lustre/ldlm/ldlm_request.c
@@ -34,12 +34,12 @@ int ldlm_cli_enqueue(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
         ENTRY;
 
         *flags = 0;
-        rc = ldlm_local_lock_create(ns, parent_lock_handle, res_id, type, mode,
-                                    data, data_len, lockh);
-        if (rc != ELDLM_OK)
-                GOTO(out, rc);
+        lock = ldlm_local_lock_create(ns, parent_lock_handle, res_id, type,
+                                      mode, data, data_len);
+        if (lock == NULL)
+                GOTO(out, rc = -ENOMEM);
 
-        lock = lustre_handle2object(lockh);
+        ldlm_lock2handle(lock, &lockh);
         LDLM_DEBUG(lock, "client-side enqueue START");
 
         if (req == NULL) {
-- 
1.8.3.1