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authorSage Weil <sage@newdream.net>2010-08-11 14:51:23 -0700
committerSage Weil <sage@newdream.net>2010-08-22 15:04:43 -0700
commitf3c60c5918f26ea16761ddc8b12d8401a3db626b (patch)
tree00bde7250b6753910a38b454c7a9cee2eb7e84e7 /fs/ceph/mds_client.h
parente56fa10e92e077d456cbc33b7025032887772b33 (diff)
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>
Diffstat (limited to 'fs/ceph/mds_client.h')
-rw-r--r--fs/ceph/mds_client.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index ab7e89f5e34..c98267ce6d2 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -234,7 +234,8 @@ struct ceph_mds_client {
struct mutex mutex; /* all nested structures */
struct ceph_mdsmap *mdsmap;
- struct completion safe_umount_waiters, session_close_waiters;
+ struct completion safe_umount_waiters;
+ wait_queue_head_t session_close_wq;
struct list_head waiting_for_map;
struct ceph_mds_session **sessions; /* NULL for mds if no session */