btrfs/085: check flakey device instead of backend device

btrfs/085 mount and works on $FLAKEY_DEV, but it's inspecting the
underlying $SCRATCH_DEV. Since writing to dm-flakey does not
invalidate page cache of $SCRATCH_DEV, the btrfs command can read a
stalled data from page cache. We should check the flakey device to
avoid such cache inconsistency.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

diff --git a/tests/btrfs/085 b/tests/btrfs/085
index 4773ed8041fdb50e7a4439122157a0f78053e4d3..2a31eefd2013092e817731cc1ebb8df61f5d1ad3 100755 (executable)
--- a/tests/btrfs/085
+++ b/tests/btrfs/085
@@ -46,7 +46,7 @@ rm -f $seqres.full
 has_orphan_item()
 {
        INO=$1
-       if $BTRFS_UTIL_PROG inspect-internal dump-tree $SCRATCH_DEV | \
+       if $BTRFS_UTIL_PROG inspect-internal dump-tree $FLAKEY_DEV | \
                grep -q "key (ORPHAN ORPHAN_ITEM $INO)"; then
                return 0
        fi