afr: allow readdir to proceed for directories in split-brain

Problem:
afr_read_txn() bails out if read_subvol==-1. This meant that for
directories that were in entry split-brain, FOPS like readdir, access,
stat etc were not allowed.

Fix:
Except for getxattr, all other FOPS are wound on the first up child
of afr.

Change-Id: Iacec8fbb1e75c4d2094baa304f62331c81a6f670
BUG: 1218863
BUG:
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/10776
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Anuradha Talur <atalur@redhat.com>
(cherry picked from commit 49b428433a03fcf709fdc8c08603b4cf02198e0a)
Reviewed-on: http://review.gluster.org/10962
Tested-by: NetBSD Build System
Tested-by: Gluster Build System <jenkins@build.gluster.com>

0 files changed, 0 insertions, 0 deletions