tree 1ecb6f35e572ba1e498390d1b09faf3c309bbaee
parent 5f21c96dd5c615341963036ae8f5e4f5227a818d
author Sage Weil <sage@newdream.net> 1311705043 -0700
committer Sage Weil <sage@newdream.net> 1311705043 -0700

ceph: protect d_parent access in ceph_d_revalidate

Protect d_parent with d_lock.  Carry a reference.  Simplify the flow so
that there is a single exit point and cleanup.

Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>