File c7892373-libxl-remove-lock.patch of Package libvirt

commit c78923732d2067ec5d6e9b3fd82e4e3a1592df92
Author: Jim Fehlig <jfehlig@suse.com>
Date:   Thu Sep 18 15:05:34 2014 -0600

    libxl: Drop driver lock in libxlDomainDefineXML
    
    There is no need to acquire the driver-wide lock in
    libxlDomainDefineXML.  When switching to jobs in the libxl
    driver, most driver-wide locks were removed.  The locking here
    was preserved since I mistakenly thought virDomainObjListAdd
    needed protection.  This is not the case, so remove the
    unnecessary locking.

Index: libvirt-1.2.5/src/libxl/libxl_driver.c
===================================================================
--- libvirt-1.2.5.orig/src/libxl/libxl_driver.c
+++ libvirt-1.2.5/src/libxl/libxl_driver.c
@@ -2385,25 +2385,22 @@ libxlDomainDefineXML(virConnectPtr conn,
     virObjectEventPtr event = NULL;
     virDomainDefPtr oldDef = NULL;
 
-    /* Lock the driver until the virDomainObj is created and locked */
-    libxlDriverLock(driver);
     if (!(def = virDomainDefParseString(xml, cfg->caps, driver->xmlopt,
                                         1 << VIR_DOMAIN_VIRT_XEN,
                                         VIR_DOMAIN_XML_INACTIVE)))
-        goto cleanup_unlock;
+        goto cleanup;
 
     if (virDomainDefineXMLEnsureACL(conn, def) < 0)
-        goto cleanup_unlock;
+        goto cleanup;
 
     if (!(vm = virDomainObjListAdd(driver->domains, def,
                                    driver->xmlopt,
                                    0,
                                    &oldDef)))
-        goto cleanup_unlock;
+        goto cleanup;
 
     def = NULL;
     vm->persistent = 1;
-    libxlDriverUnlock(driver);
 
     if (virDomainSaveConfig(cfg->configDir,
                             vm->newDef ? vm->newDef : vm->def) < 0) {
@@ -2430,10 +2427,6 @@ libxlDomainDefineXML(virConnectPtr conn,
         libxlDomainEventQueue(driver, event);
     virObjectUnref(cfg);
     return dom;
-
- cleanup_unlock:
-    libxlDriverUnlock(driver);
-    goto cleanup;
 }
 
 static int