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-rw-r--r--block/parallels.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/parallels.c b/block/parallels.c
index 99fc0f77ef..b9b5c6dc3d 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -204,7 +204,7 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
return -EINVAL;
}
- to_allocate = (sector_num + *pnum + s->tracks - 1) / s->tracks - idx;
+ to_allocate = DIV_ROUND_UP(sector_num + *pnum, s->tracks) - idx;
space = to_allocate * s->tracks;
if (s->data_end + space > bdrv_getlength(bs->file->bs) >> BDRV_SECTOR_BITS) {
int ret;