call-stub: remove fall-through in ftruncate

Change-Id: I58bf6b881ff63d627051bef1ab30bd0337ab65e2
BUG: 913544
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/4564
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>

libglusterfs/src/call-stub.c

@@ -2487,6 +2487,7 @@ call_resume_unwind (call_stub_t *stub)
         case GF_FOP_FTRUNCATE:
 		STUB_UNWIND (stub, ftruncate, &stub->args_cbk.prestat,
 			     &stub->args_cbk.poststat, stub->args_cbk.xdata);
+                break;
         case GF_FOP_FSTAT:
 		STUB_UNWIND (stub, fstat, &stub->args_cbk.stat,
 			     stub->args_cbk.xdata);

tests/bugs/bug-913544.t

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+
+cleanup;
+
+#simulate a split-brain of a file and do truncate. This should not crash the mount point
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 replica 2 $H0:$B0/${V0}0 $H0:$B0/${V0}1
+TEST $CLI volume set $V0 stat-prefetch off
+TEST $CLI volume start $V0
+TEST glusterfs --volfile-id=/$V0 --volfile-server=$H0 $M0 --attribute-timeout=0 --entry-timeout=0
+cd $M0
+TEST touch a
+#simulate no-changelog data split-brain
+echo "abc" > $B0/${V0}1/a
+echo "abcd" > $B0/${V0}0/a
+TEST ! truncate -s 0 a
+TEST ls
+cd
+
+cleanup