[Cluster-devel] [PATCH dlm/next] fs: dlm: make dlm_callback_resume quite

[Alexander Aring]

This patch makes dlm_callback_resume info printout less noisy by
accumulate all callback queues into one printout not in 25 times steps.
It seems this printout became lately quite noisy in relationship with
gfs2.

Before:

[241767.849302] dlm: bin: dlm_callback_resume 25
[241767.854846] dlm: bin: dlm_callback_resume 25
[241767.860373] dlm: bin: dlm_callback_resume 25
...
[241767.865920] dlm: bin: dlm_callback_resume 25
[241767.871352] dlm: bin: dlm_callback_resume 25
[241767.876733] dlm: bin: dlm_callback_resume 25

After the patch:

[  385.485728] dlm: gfs2: dlm_callback_resume 175

if zero it will not be printed out.

Reported-by: Barry Marson <bmarson at redhat.com>
Signed-off-by: Alexander Aring <aahringo at redhat.com>
---
 fs/dlm/ast.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/fs/dlm/ast.c b/fs/dlm/ast.c
index 283c7b94edda..6600930497cc 100644
--- a/fs/dlm/ast.c
+++ b/fs/dlm/ast.c
@@ -295,7 +295,7 @@ void dlm_callback_suspend(struct dlm_ls *ls)
 void dlm_callback_resume(struct dlm_ls *ls)
 {
 	struct dlm_lkb *lkb, *safe;
-	int count = 0;
+	int count = 0, sum = 0;
 
 	clear_bit(LSFL_CB_DELAY, &ls->ls_flags);
 
@@ -313,12 +313,14 @@ void dlm_callback_resume(struct dlm_ls *ls)
 	}
 	mutex_unlock(&ls->ls_cb_mutex);
 
-	if (count)
-		log_rinfo(ls, "dlm_callback_resume %d", count);
+	sum += count;
 	if (count == MAX_CB_QUEUE) {
 		count = 0;
 		cond_resched();
 		goto more;
 	}
+
+	if (sum)
+		log_rinfo(ls, "%s %d", __func__, sum);
 }
 
-- 
2.27.0