Use helpers to obtain task pid in printks

The task_struct->pid member is going to be deprecated, so start
using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in
the kernel.

The first thing to start with is the pid, printed to dmesg - in
this case we may safely use task_pid_nr(). Besides, printks produce
more (much more) than a half of all the explicit pid usage.

[akpm@linux-foundation.org: git-drm went and changed lots of stuff]
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index a2c3316..2fde7bf 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -259,7 +259,7 @@
 	struct dlm_lock_resource *res;
 
 	mlog(ML_NOTICE, "%s(%d): recovery info, state=%s, dead=%u, master=%u\n",
-	     dlm->name, dlm->dlm_reco_thread_task->pid,
+	     dlm->name, task_pid_nr(dlm->dlm_reco_thread_task),
 	     dlm->reco.state & DLM_RECO_STATE_ACTIVE ? "ACTIVE" : "inactive",
 	     dlm->reco.dead_node, dlm->reco.new_master);
 
@@ -420,7 +420,7 @@
 	if (dlm_in_recovery(dlm)) {
 		mlog(0, "%s: reco thread %d in recovery: "
 		     "state=%d, master=%u, dead=%u\n",
-		     dlm->name, dlm->dlm_reco_thread_task->pid,
+		     dlm->name, task_pid_nr(dlm->dlm_reco_thread_task),
 		     dlm->reco.state, dlm->reco.new_master,
 		     dlm->reco.dead_node);
 	}
@@ -483,7 +483,7 @@
 		return 0;
 	}
 	mlog(0, "%s(%d):recovery thread found node %u in the recovery map!\n",
-	     dlm->name, dlm->dlm_reco_thread_task->pid,
+	     dlm->name, task_pid_nr(dlm->dlm_reco_thread_task),
 	     dlm->reco.dead_node);
 	spin_unlock(&dlm->spinlock);
 
@@ -507,7 +507,7 @@
 		mlog(0, "another node will master this recovery session.\n");
 	}
 	mlog(0, "dlm=%s (%d), new_master=%u, this node=%u, dead_node=%u\n",
-	     dlm->name, dlm->dlm_reco_thread_task->pid, dlm->reco.new_master,
+	     dlm->name, task_pid_nr(dlm->dlm_reco_thread_task), dlm->reco.new_master,
 	     dlm->node_num, dlm->reco.dead_node);
 
 	/* it is safe to start everything back up here
@@ -520,7 +520,7 @@
 
 master_here:
 	mlog(0, "(%d) mastering recovery of %s:%u here(this=%u)!\n",
-	     dlm->dlm_reco_thread_task->pid,
+	     task_pid_nr(dlm->dlm_reco_thread_task),
 	     dlm->name, dlm->reco.dead_node, dlm->node_num);
 
 	status = dlm_remaster_locks(dlm, dlm->reco.dead_node);