btrfs/028: use the helper _btrfs_kill_stress_balance_pid

Now that there's a helper to kill a background process that is running
_btrfs_stress_balance(), use it in btrfs/028. It's equivalent to the
existing code in btrfs/028.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>

diff --git a/tests/btrfs/028 b/tests/btrfs/028
index d860974ec207320d21929092d7c0eedf0c38b95f..8fbe8887f84bd95c6c5ff5e1b362dae601f4ed02 100755 (executable)
--- a/tests/btrfs/028
+++ b/tests/btrfs/028
@@ -44,12 +44,9 @@ balance_pid=$!
 
 # 30s is enough to trigger bug
 sleep $((30*$TIME_FACTOR))
-kill $fsstress_pid $balance_pid &> /dev/null
-wait
-
-# kill _btrfs_stress_balance can't end balance, so call btrfs balance cancel
-# to cancel running or paused balance.
-$BTRFS_UTIL_PROG balance cancel $SCRATCH_MNT &> /dev/null
+kill $fsstress_pid &> /dev/null
+wait $fsstress_pid &> /dev/null
+_btrfs_kill_stress_balance_pid $balance_pid
 
 _run_btrfs_util_prog filesystem sync $SCRATCH_MNT