[GFS2] Audit printk and kmalloc

All printk calls now have KERN_ set where required and a couple of
kmalloc(), memset(.., 0, ...) calls changed to kzalloc().

This is in response to comments from:
Pekka Enberg <penberg@cs.helsinki.fi> and
Eric Sesterhenn <snakebyte@gmx.de>

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/locking/dlm/plock.c b/fs/gfs2/locking/dlm/plock.c
index 3828472..f7ac582 100644
--- a/fs/gfs2/locking/dlm/plock.c
+++ b/fs/gfs2/locking/dlm/plock.c
@@ -83,7 +83,7 @@
 
 	spin_lock(&ops_lock);
 	if (!list_empty(&op->list)) {
-		printk("plock op on list\n");
+		printk(KERN_INFO "plock op on list\n");
 		list_del(&op->list);
 	}
 	spin_unlock(&ops_lock);
@@ -127,7 +127,7 @@
 
 	spin_lock(&ops_lock);
 	if (!list_empty(&op->list)) {
-		printk("punlock op on list\n");
+		printk(KERN_INFO "punlock op on list\n");
 		list_del(&op->list);
 	}
 	spin_unlock(&ops_lock);
@@ -162,7 +162,7 @@
 
 	spin_lock(&ops_lock);
 	if (!list_empty(&op->list)) {
-		printk("plock_get op on list\n");
+		printk(KERN_INFO "plock_get op on list\n");
 		list_del(&op->list);
 	}
 	spin_unlock(&ops_lock);
@@ -242,7 +242,7 @@
 	if (found)
 		wake_up(&recv_wq);
 	else
-		printk("gdlm dev_write no op %x %llx\n", info.fsid,
+		printk(KERN_INFO "gdlm dev_write no op %x %llx\n", info.fsid,
 			info.number);
 	return count;
 }
@@ -285,13 +285,14 @@
 
 	rv = misc_register(&plock_dev_misc);
 	if (rv)
-		printk("gdlm_plock_init: misc_register failed %d", rv);
+		printk(KERN_INFO "gdlm_plock_init: misc_register failed %d",
+		       rv);
 	return rv;
 }
 
 void gdlm_plock_exit(void)
 {
 	if (misc_deregister(&plock_dev_misc) < 0)
-		printk("gdlm_plock_exit: misc_deregister failed");
+		printk(KERN_INFO "gdlm_plock_exit: misc_deregister failed");
 }