ocfs2: Fix ocfs2_osb_dump()

Skip printing information that is not valid for local mounts.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

1 files changed, 18 insertions, 14 deletions

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index d33767f17ba3..d64739b593e9 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -234,20 +234,24 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
                         "%10s => Opts: 0x%lX  AtimeQuanta: %u\n", "Mount",
                         osb->s_mount_opt, osb->s_atime_quantum);
 
-        out += snprintf(buf + out, len - out,
-                        "%10s => Stack: %s  Name: %*s  Version: %d.%d\n",
-                        "Cluster",
-                        (*osb->osb_cluster_stack == '\0' ?
-                         "o2cb" : osb->osb_cluster_stack),
-                        cconn->cc_namelen, cconn->cc_name,
-                        cconn->cc_version.pv_major, cconn->cc_version.pv_minor);
+        if (cconn) {
+                out += snprintf(buf + out, len - out,
+                                "%10s => Stack: %s  Name: %*s  "
+                                "Version: %d.%d\n", "Cluster",
+                                (*osb->osb_cluster_stack == '\0' ?
+                                 "o2cb" : osb->osb_cluster_stack),
+                                cconn->cc_namelen, cconn->cc_name,
+                                cconn->cc_version.pv_major,
+                                cconn->cc_version.pv_minor);
+        }
 
         spin_lock(&osb->dc_task_lock);
         out += snprintf(buf + out, len - out,
                         "%10s => Pid: %d  Count: %lu  WakeSeq: %lu  "
                         "WorkSeq: %lu\n", "DownCnvt",
-                        task_pid_nr(osb->dc_task), osb->blocked_lock_count,
-                        osb->dc_wake_sequence, osb->dc_work_sequence);
+                        (osb->dc_task ?  task_pid_nr(osb->dc_task) : -1),
+                        osb->blocked_lock_count, osb->dc_wake_sequence,
+                        osb->dc_work_sequence);
         spin_unlock(&osb->dc_task_lock);
 
         spin_lock(&osb->osb_lock);
@@ -267,14 +271,15 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
 
         out += snprintf(buf + out, len - out,
                         "%10s => Pid: %d  Interval: %lu  Needs: %d\n", "Commit",
-                        task_pid_nr(osb->commit_task), osb->osb_commit_interval,
+                        (osb->commit_task ? task_pid_nr(osb->commit_task) : -1),
+                        osb->osb_commit_interval,
                         atomic_read(&osb->needs_checkpoint));
 
         out += snprintf(buf + out, len - out,
-                        "%10s => State: %d  NumTxns: %d  TxnId: %lu\n",
+                        "%10s => State: %d  TxnId: %lu  NumTxns: %d\n",
                         "Journal", osb->journal->j_state,
-                        atomic_read(&osb->journal->j_num_trans),
-                        osb->journal->j_trans_id);
+                        osb->journal->j_trans_id,
+                        atomic_read(&osb->journal->j_num_trans));
 
         out += snprintf(buf + out, len - out,
                         "%10s => GlobalAllocs: %d  LocalAllocs: %d  "
@@ -302,7 +307,6 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
 
         out += snprintf(buf + out, len - out, "%10s => %3s  %10s\n",
                         "Slots", "Num", "RecoGen");
-
         for (i = 0; i < osb->max_slots; ++i) {
                 out += snprintf(buf + out, len - out,
                                 "%10s  %c %3d  %10d\n",