ceph: include migrating caps in issued set

We should include caps that are mid-migration (we've received the EXPORT,
but not the IMPORT) in the issued caps set.

Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 06f1979..295b7e54 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -655,7 +655,7 @@
  */
 int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented)
 {
-	int have = ci->i_snap_caps;
+	int have = ci->i_snap_caps | ci->i_cap_exporting_issued;
 	struct ceph_cap *cap;
 	struct rb_node *p;