[Cluster-devel] [GFS2 PATCH 02/12] gfs2: add missing log_blocks trace points in gfs2_write_revokes

[Bob Peterson <rpeterso@redhat.com>]

Function gfs2_write_revokes was incrementing and decrementing the number
of log blocks free, but there was never a log_blocks trace point for it.
Thus, the free blocks from a log_blocks trace would jump around
mysteriously.

This patch adds the missing trace points so the trace makes more sense.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
---
 fs/gfs2/log.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index a58333e3980d..01a645652a7d 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -716,16 +716,24 @@ void gfs2_write_revokes(struct gfs2_sbd *sdp)
 		atomic_dec(&sdp->sd_log_blks_free);
 		/* If no blocks have been reserved, we need to also
 		 * reserve a block for the header */
-		if (!sdp->sd_log_blks_reserved)
+		if (!sdp->sd_log_blks_reserved) {
 			atomic_dec(&sdp->sd_log_blks_free);
+			trace_gfs2_log_blocks(sdp, -2);
+		} else {
+			trace_gfs2_log_blocks(sdp, -1);
+		}
 	}
 	gfs2_ail1_empty(sdp, max_revokes);
 	gfs2_log_unlock(sdp);
 
 	if (!sdp->sd_log_num_revoke) {
 		atomic_inc(&sdp->sd_log_blks_free);
-		if (!sdp->sd_log_blks_reserved)
+		if (!sdp->sd_log_blks_reserved) {
 			atomic_inc(&sdp->sd_log_blks_free);
+			trace_gfs2_log_blocks(sdp, 2);
+		} else {
+			trace_gfs2_log_blocks(sdp, 1);
+		}
 	}
 }
 
-- 
2.26.2