ceph: track laggy state of mds from mdsmap

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

1 files changed, 8 insertions, 0 deletions

diff --git a/fs/ceph/mdsmap.h b/fs/ceph/mdsmap.h
index eacc131aa5c..4c5cb0880bb 100644
--- a/fs/ceph/mdsmap.h
+++ b/fs/ceph/mdsmap.h
@@ -13,6 +13,7 @@ struct ceph_mds_info {
         struct ceph_entity_addr addr;
         s32 state;
         int num_export_targets;
+        bool laggy;
         u32 *export_targets;
 };
 
@@ -47,6 +48,13 @@ static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w)
         return m->m_info[w].state;
 }
 
+static inline bool ceph_mdsmap_is_laggy(struct ceph_mdsmap *m, int w)
+{
+        if (w >= 0 && w < m->m_max_mds)
+                return m->m_info[w].laggy;
+        return false;
+}
+
 extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m);
 extern struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end);
 extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m);