ceph: don't use ->d_time

Pretty simple: just use ceph_dentry_info.time instead (which was already
there, unused).

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 6e0fedf..8ff7bcc 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -59,7 +59,7 @@
 
 	di->dentry = dentry;
 	di->lease_session = NULL;
-	dentry->d_time = jiffies;
+	di->time = jiffies;
 	/* avoid reordering d_fsdata setup so that the check above is safe */
 	smp_mb();
 	dentry->d_fsdata = di;
@@ -1124,7 +1124,7 @@
 void ceph_invalidate_dentry_lease(struct dentry *dentry)
 {
 	spin_lock(&dentry->d_lock);
-	dentry->d_time = jiffies;
+	ceph_dentry(dentry)->time = jiffies;
 	ceph_dentry(dentry)->lease_shared_gen = 0;
 	spin_unlock(&dentry->d_lock);
 }
@@ -1154,7 +1154,7 @@
 		spin_unlock(&s->s_gen_ttl_lock);
 
 		if (di->lease_gen == gen &&
-		    time_before(jiffies, dentry->d_time) &&
+		    time_before(jiffies, di->time) &&
 		    time_before(jiffies, ttl)) {
 			valid = 1;
 			if (di->lease_renew_after &&