[PATCH 28/30] drbd: finally report ms, not jiffies, in log message

From: Philipp Reisner
Date: Mon Jun 13 2016 - 18:27:42 EST


From: Lars Ellenberg <lars.ellenberg@xxxxxxxxxx>

Also skip the message unless bitmap IO took longer than 5 ms.

Signed-off-by: Philipp Reisner <philipp.reisner@xxxxxxxxxx>
Signed-off-by: Lars Ellenberg <lars.ellenberg@xxxxxxxxxx>
---
drivers/block/drbd/drbd_bitmap.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 095625b..0807fcb 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -1121,10 +1121,14 @@ static int bm_rw(struct drbd_device *device, const unsigned int flags, unsigned
kref_put(&ctx->kref, &drbd_bm_aio_ctx_destroy);

/* summary for global bitmap IO */
- if (flags == 0)
- drbd_info(device, "bitmap %s of %u pages took %lu jiffies\n",
- (flags & BM_AIO_READ) ? "READ" : "WRITE",
- count, jiffies - now);
+ if (flags == 0) {
+ unsigned int ms = jiffies_to_msecs(jiffies - now);
+ if (ms > 5) {
+ drbd_info(device, "bitmap %s of %u pages took %u ms\n",
+ (flags & BM_AIO_READ) ? "READ" : "WRITE",
+ count, ms);
+ }
+ }

if (ctx->error) {
drbd_alert(device, "we had at least one MD IO ERROR during bitmap IO\n");
--
2.7.4