Merge tag 'for-5.15/block-2021-08-30' of git://git.kernel.dk/linux-block

[linux-2.6-microblaze.git] / block / blk-iocost.c

diff --git a/block/blk-iocost.c b/block/blk-iocost.c
index 0e56557..b3880e4 100644 (file)
--- a/block/blk-iocost.c
+++ b/block/blk-iocost.c
@@ -2988,34 +2988,29 @@ static void ioc_pd_free(struct blkg_policy_data *pd)
        kfree(iocg);
 }
 
-static size_t ioc_pd_stat(struct blkg_policy_data *pd, char *buf, size_t size)
+static bool ioc_pd_stat(struct blkg_policy_data *pd, struct seq_file *s)
 {
        struct ioc_gq *iocg = pd_to_iocg(pd);
        struct ioc *ioc = iocg->ioc;
-       size_t pos = 0;
 
        if (!ioc->enabled)
-               return 0;
+               return false;
 
        if (iocg->level == 0) {
                unsigned vp10k = DIV64_U64_ROUND_CLOSEST(
                        ioc->vtime_base_rate * 10000,
                        VTIME_PER_USEC);
-               pos += scnprintf(buf + pos, size - pos, " cost.vrate=%u.%02u",
-                                 vp10k / 100, vp10k % 100);
+               seq_printf(s, " cost.vrate=%u.%02u", vp10k / 100, vp10k % 100);
        }
 
-       pos += scnprintf(buf + pos, size - pos, " cost.usage=%llu",
-                        iocg->last_stat.usage_us);
+       seq_printf(s, " cost.usage=%llu", iocg->last_stat.usage_us);
 
        if (blkcg_debug_stats)
-               pos += scnprintf(buf + pos, size - pos,
-                                " cost.wait=%llu cost.indebt=%llu cost.indelay=%llu",
-                                iocg->last_stat.wait_us,
-                                iocg->last_stat.indebt_us,
-                                iocg->last_stat.indelay_us);
-
-       return pos;
+               seq_printf(s, " cost.wait=%llu cost.indebt=%llu cost.indelay=%llu",
+                       iocg->last_stat.wait_us,
+                       iocg->last_stat.indebt_us,
+                       iocg->last_stat.indelay_us);
+       return true;
 }
 
 static u64 ioc_weight_prfill(struct seq_file *sf, struct blkg_policy_data *pd,