afs: Show more a bit more server state in /proc/net/afs/servers

Display more information about the state of a server record, including the
flags, rtt and break counter plus the probe state for each server in
/proc/net/afs/servers.

Rearrange the server flags a bit to make them easier to read at a glance in
the proc file.
Signed-off-by: David Howells <dhowells@redhat.com>

fs/afs/internal.h

@@ -497,15 +497,15 @@ struct afs_server {
 	time64_t		unuse_time;	/* Time at which last unused */
 	unsigned long		flags;
 #define AFS_SERVER_FL_RESPONDING 0		/* The server is responding */
-#define AFS_SERVER_FL_NOT_READY	1		/* The record is not ready for use */
-#define AFS_SERVER_FL_NOT_FOUND	2		/* VL server says no such server */
-#define AFS_SERVER_FL_VL_FAIL	3		/* Failed to access VL server */
-#define AFS_SERVER_FL_UPDATING	4
-#define AFS_SERVER_FL_NO_IBULK	7		/* Fileserver doesn't support FS.InlineBulkStatus */
+#define AFS_SERVER_FL_UPDATING	1
+#define AFS_SERVER_FL_NEEDS_UPDATE 2		/* Fileserver address list is out of date */
+#define AFS_SERVER_FL_NOT_READY	4		/* The record is not ready for use */
+#define AFS_SERVER_FL_NOT_FOUND	5		/* VL server says no such server */
+#define AFS_SERVER_FL_VL_FAIL	6		/* Failed to access VL server */
 #define AFS_SERVER_FL_MAY_HAVE_CB 8		/* May have callbacks on this fileserver */
-#define AFS_SERVER_FL_IS_YFS	9		/* Server is YFS not AFS */
-#define AFS_SERVER_FL_NO_RM2	10		/* Fileserver doesn't support YFS.RemoveFile2 */
-#define AFS_SERVER_FL_NEEDS_UPDATE 12		/* Fileserver address list is out of date */
+#define AFS_SERVER_FL_IS_YFS	16		/* Server is YFS not AFS */
+#define AFS_SERVER_FL_NO_IBULK	17		/* Fileserver doesn't support FS.InlineBulkStatus */
+#define AFS_SERVER_FL_NO_RM2	18		/* Fileserver doesn't support YFS.RemoveFile2 */
 	atomic_t		ref;		/* Object refcount */
 	atomic_t		active;		/* Active user count */
 	u32			addr_version;	/* Address list version */

fs/afs/proc.c

@@ -386,9 +386,13 @@ static int afs_proc_servers_show(struct seq_file *m, void *v)
 		   &server->uuid,
 		   atomic_read(&server->ref),
 		   atomic_read(&server->active));
-	seq_printf(m, "  - ALIST v=%u osp=%u r=%lx f=%lx\n",
-		   alist->version, atomic_read(&server->probe_outstanding),
-		   alist->responded, alist->failed);
+	seq_printf(m, "  - info: fl=%lx rtt=%u brk=%x\n",
+		   server->flags, server->rtt, server->cb_s_break);
+	seq_printf(m, "  - probe: last=%d out=%d\n",
+		   (int)(jiffies - server->probed_at) / HZ,
+		   atomic_read(&server->probe_outstanding));
+	seq_printf(m, "  - ALIST v=%u rsp=%lx f=%lx\n",
+		   alist->version, alist->responded, alist->failed);
 	for (i = 0; i < alist->nr_addrs; i++)
 		seq_printf(m, "    [%x] %pISpc%s\n",
 			   i, &alist->addrs[i].transport,