Branch b1_8_gate

This patch includes att18982, att18236, att18237,att18983 and att19061 in bz14840.
Slove "quota recovery deadlock during mds failover", it includes:
1. fix osts hang when mds does failover with quotaon
2. prevent watchdog storm when osts threads wait for the
   recovery of mds
b=14840
i=johann
i=shadow
i=panda

diff --git a/lustre/include/lustre_net.h b/lustre/include/lustre_net.h
index be69dc5..c148467 100644 (file)
--- a/lustre/include/lustre_net.h
+++ b/lustre/include/lustre_net.h
@@ -524,6 +524,8 @@ struct ptlrpc_thread {
         __u32 t_flags;
 
         unsigned int t_id; /* service thread index, from ptlrpc_start_threads */
+        struct lc_watchdog *t_watchdog; /* put watchdog in the structure per
+                                         * thread b=14840 */
         cfs_waitq_t t_ctl_waitq;
 };