[PATCH 1/4] fsx: add missing file size update on zero range operations

[fdmanana@kernel.org]

From: Filipe Manana <fdmanana@suse.com>

When a zero range operation increases the size of the test file we were
not updating the global variable 'file_size' which tracks the current
size of the test file. This variable is used to for example compute the
offset for a source range of clone, dedupe and copy file range operations.

So just fix it by updating the 'file_size' global variable whenever a zero
range operation does not use the keep size flag and its range goes beyond
the current file size.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
---
 ltp/fsx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ltp/fsx.c b/ltp/fsx.c
index 9d598a4f..fa383c94 100644
--- a/ltp/fsx.c
+++ b/ltp/fsx.c
@@ -1212,6 +1212,8 @@ do_zero_range(unsigned offset, unsigned length, int keep_size)
 	}
 
 	end_offset = keep_size ? 0 : offset + length;
+	if (!keep_size && end_offset > file_size)
+		file_size = end_offset;
 
 	if (end_offset > biggest) {
 		biggest = end_offset;
-- 
2.11.0