protocol/client: Unserialize xdata even if lookup fails

Problem: AFR relies on xdata returned by lookup to determine
if there are any files that need healing. This info is further
used to optimize readdirp.

In case of lookups with negative return value, client xlator was
sending NULL xdata. Due to absence of xdata, AFR conservatively
assumes that there are files that need healing, which is incorrect.

Solution: Even in case of unsuccessful lookups, send the xdata
received by protocol client so that higher xlators can get the
info that they rely on.

	>Change-Id: Id3a1023eb536180888eb2c0b39050000b76f7226
	>BUG: 1366284
	>Signed-off-by: Anuradha Talur <atalur@redhat.com>
	>Reviewed-on: http://review.gluster.org/15120
	>Smoke: Gluster Build System <jenkins@build.gluster.org>
	>Reviewed-by: Poornima G <pgurusid@redhat.com>
	>Tested-by: Poornima G <pgurusid@redhat.com>
	>CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
	>NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
	>Reviewed-by: Ashish Pandey <aspandey@redhat.com>
	>Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
	>Signed-off-by: Anuradha Talur <atalur@redhat.com>

Change-Id: Ia22bcb200d599b78677e429d25877c78f7d27612
BUG: 1369211
Signed-off-by: Anuradha Talur <atalur@redhat.com>
Reviewed-on: http://review.gluster.org/15259
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>

0 files changed, 0 insertions, 0 deletions