tree 00bde7250b6753910a38b454c7a9cee2eb7e84e7
parent e56fa10e92e077d456cbc33b7025032887772b33
author Sage Weil <sage@newdream.net> 1281563483 -0700
committer Sage Weil <sage@newdream.net> 1282514683 -0700

ceph: fix multiple mds session shutdown

The use of a completion when waiting for session shutdown during umount is
inappropriate, given the complexity of the condition.  For multiple MDS's,
this resulted in the umount thread spinning, often preventing the session
close message from being processed in some cases.

Switch to a waitqueue and defined a condition helper.  This cleans things
up nicely.

Signed-off-by: Sage Weil <sage@newdream.net>