[LTP] [PATCH v1 2/2] fsx-linux: Fix op_max_size handling in op_file_position()

[Jinseok Kim]

op_file_position() ignored op_max_size (-o option), causing operation
sizes to span up to the entire file size. Cap max_len with op_max_size
to honor the user option.

Signed-off-by: Jinseok Kim <always.starving0@gmail.com>
---
 testcases/kernel/fs/fsx-linux/fsx-linux.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/testcases/kernel/fs/fsx-linux/fsx-linux.c b/testcases/kernel/fs/fsx-linux/fsx-linux.c
index 21390c58c..81aca5dab 100644
--- a/testcases/kernel/fs/fsx-linux/fsx-linux.c
+++ b/testcases/kernel/fs/fsx-linux/fsx-linux.c
@@ -77,9 +77,15 @@ static void op_file_position(
 	struct file_pos_t *pos)
 {
 	long long diff;
+	long long max_len;

 	pos->offset = random() % fsize;
-	pos->size = random() % (fsize - pos->offset);
+
+	max_len = fsize - pos->offset;
+	if (max_len > op_max_size)
+		max_len = op_max_size;
+
+	pos->size = random() % max_len;

 	diff = pos->offset % align;

--
2.43.0