cluster/afr : Examine data/metadata readable for read-subvol

During lookup and discover, currently read_subvol is based
only on data_readable. read_subvol should be decided based
on both data_readable and metadata_readable.

Credits to Ravishankar N for the logic of afr_first_up_child
from http://review.gluster.org/10905/ .

> Change-Id: I98580b23c278172ee2902be08eeaafb6722e830c
> BUG: 1240244
> Signed-off-by: Anuradha Talur <atalur@redhat.com>
> Reviewed-on: http://review.gluster.org/11551
> Reviewed-by: Ravishankar N <ravishankar@redhat.com>
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
> Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
> (cherry picked from commit 36349fa250ace6109002dfa41305d9dcd54ce0a9)

Change-Id: Ia068ef9deb97f7bc48ea0c56d5ab6851f8860118
BUG: 1256909
Signed-off-by: Anuradha Talur <atalur@redhat.com>
Reviewed-on: http://review.gluster.org/12011
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>

0 files changed, 0 insertions, 0 deletions