[RFC PATCH v3 5/9] generic/613: write some actual data for btrfs

[Sweet Tea Dorminy <sweettea-kernel@dorminy.me>]

Currently, the test touches a file and assumes that that is sufficient
to generate a new nonce to test for that file. However, btrfs doesn't
store an encryption context for a leaf inode, and doesn't store an
encryption context for data within a leaf inode until data is actually
written. Thus, merely touching the file on btrfs doesn't actually
generate a testable nonce.

Instead, write a trivial bit of data to each file, which provokes btrfs
to generate a encryption context for the data and thus a testable nonce.

Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
---
 tests/generic/613 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/generic/613 b/tests/generic/613
index 279b1bfb..11f28c74 100755
--- a/tests/generic/613
+++ b/tests/generic/613
@@ -53,11 +53,11 @@ for i in {1..50}; do
 done
 for i in {1..50}; do
 	file=$SCRATCH_MNT/v1_policy_dir_1/$i
-	touch $file
+	echo "0" > $file
 	inodes+=("$(stat -c %i $file)")
 
 	file=$SCRATCH_MNT/v2_policy_dir_1/$i
-	touch $file
+	echo "0" > $file
 	inodes+=("$(stat -c %i $file)")
 done
 _scratch_unmount
-- 
2.41.0