if (num_threads < 0)
num_threads = 4;
- if (num_threads > fs->group_desc_count)
+ if ((unsigned) num_threads > fs->group_desc_count)
num_threads = fs->group_desc_count;
average_group = fs->group_desc_count / num_threads;
if (ext2fs_has_feature_flex_bg(fs->super)) {