From: Yu Kuai <yukuai3@xxxxxxxxxx>
To avoid abuse of bdi_dev_name().
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
block/blk-iolatency.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/block/blk-iolatency.c b/block/blk-iolatency.c
index ebb522788d97..9c9ab4a73e0b 100644
--- a/block/blk-iolatency.c
+++ b/block/blk-iolatency.c
@@ -898,12 +898,15 @@ static u64 iolatency_prfill_limit(struct seq_file *sf,
struct blkg_policy_data *pd, int off)
{
struct iolatency_grp *iolat = pd_to_lat(pd);
- const char *dname = blkg_dev_name(pd->blkg);
- if (!dname || !iolat->min_lat_nsec)
+ if (!iolat->min_lat_nsec)
return 0;
- seq_printf(sf, "%s target=%llu\n",
- dname, div_u64(iolat->min_lat_nsec, NSEC_PER_USEC));
+
+ if (!blkg_print_dev_name(sf, pd->blkg))
+ return 0;
+
+ seq_printf(sf, " target=%llu\n",
+ div_u64(iolat->min_lat_nsec, NSEC_PER_USEC));
return 0;
}
--
2.39.2
