gfs2: improvements to sysfs status

This patch adds some new fields to the gfs2 status file in sysfs to aid
in debugging.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

fs/gfs2/sys.c

@@ -98,7 +98,10 @@ static ssize_t status_show(struct gfs2_sbd *sdp, char *buf)
 		     "sd_log_flush_head:        %d\n"
 		     "sd_log_flush_tail:        %d\n"
 		     "sd_log_blks_reserved:     %d\n"
-		     "sd_log_revokes_available: %d\n",
+		     "sd_log_revokes_available: %d\n"
+		     "sd_log_pinned:            %d\n"
+		     "sd_log_thresh1:           %d\n"
+		     "sd_log_thresh2:           %d\n",
 		     test_bit(SDF_JOURNAL_CHECKED, &f),
 		     test_bit(SDF_JOURNAL_LIVE, &f),
 		     (sdp->sd_jdesc ? sdp->sd_jdesc->jd_jid : 0),
@@ -128,7 +131,10 @@ static ssize_t status_show(struct gfs2_sbd *sdp, char *buf)
 		     sdp->sd_log_flush_head,
 		     sdp->sd_log_flush_tail,
 		     sdp->sd_log_blks_reserved,
-		     atomic_read(&sdp->sd_log_revokes_available));
+		     atomic_read(&sdp->sd_log_revokes_available),
+		     atomic_read(&sdp->sd_log_pinned),
+		     atomic_read(&sdp->sd_log_thresh1),
+		     atomic_read(&sdp->sd_log_thresh2));
 	return s;
 }