[PATCH] generic/297: fix the delta time based on stat

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stat -c '%Y' report seconds as int, so the delta 2.01s may result as 3s.

Signed-off-by: Wang Yugui <wangyugui@xxxxxxxxxxxx>
---
 tests/generic/297 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/generic/297 b/tests/generic/297
index 6bdc3e1c..e3082202 100755
--- a/tests/generic/297
+++ b/tests/generic/297
@@ -51,7 +51,7 @@ for i in $(seq 0 $fnr); do
 	touch $TEST_DIR/after
 	before=$(stat -c '%Y' $TEST_DIR/before)
 	after=$(stat -c '%Y' $TEST_DIR/after)
-	delta=$((after - before))
+	delta=$((after - before -1)) # 2.01s may result as 3s; so -1
 	test $delta -gt $timeout && break
 done
 
@@ -64,7 +64,7 @@ $TIMEOUT_PROG -s INT ${kill_after}s $XFS_IO_PROG -f -c "reflink $testdir/file1 0
 touch $TEST_DIR/after
 before=$(stat -c '%Y' $TEST_DIR/before)
 after=$(stat -c '%Y' $TEST_DIR/after)
-delta=$((after - before))
+delta=$((after - before - 1)) # 2.01s may result as 3s; so -1
 echo "reflink of $n bytes took $delta seconds" >> $seqres.full
 test $delta -gt $timeout && _fail "reflink didn't stop in time, n=$n t=$delta"
 
-- 
2.36.1




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