diff --git a/block.c b/block.c
index e90f431..1fac189 100644
--- a/block.c
+++ b/block.c
@@ -3363,9 +3363,8 @@
 
     bdrv_set_dirty(bs, sector_num, nb_sectors);
 
-    if (bs->stats.wr_highest_sector < sector_num + nb_sectors - 1) {
-        bs->stats.wr_highest_sector = sector_num + nb_sectors - 1;
-    }
+    bdrv_acct_highest_sector(bs, sector_num, nb_sectors);
+
     if (bs->growable && ret >= 0) {
         bs->total_sectors = MAX(bs->total_sectors, sector_num + nb_sectors);
     }
@@ -5572,28 +5571,6 @@
     }
 }
 
-void
-bdrv_acct_start(BlockDriverState *bs, BlockAcctCookie *cookie, int64_t bytes,
-        enum BlockAcctType type)
-{
-    assert(type < BDRV_MAX_IOTYPE);
-
-    cookie->bytes = bytes;
-    cookie->start_time_ns = get_clock();
-    cookie->type = type;
-}
-
-void
-bdrv_acct_done(BlockDriverState *bs, BlockAcctCookie *cookie)
-{
-    assert(cookie->type < BDRV_MAX_IOTYPE);
-
-    bs->stats.nr_bytes[cookie->type] += cookie->bytes;
-    bs->stats.nr_ops[cookie->type]++;
-    bs->stats.total_time_ns[cookie->type] += get_clock() -
-                                             cookie->start_time_ns;
-}
-
 void bdrv_img_create(const char *filename, const char *fmt,
                      const char *base_filename, const char *base_fmt,
                      char *options, uint64_t img_size, int flags,