Current code exit with floating point exception on a blank fs: # btrfs-calc-size -b /dev/sda6 Calculating size of root tree Total size: 16384 Inline data: 0 Total seeks: 0 Forward seeks: 0 Backward seeks: 0 Floating point exception
This patch add a condition check for above case. Signed-off-by: Zhao Lei <zhao...@cn.fujitsu.com> --- btrfs-calc-size.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/btrfs-calc-size.c b/btrfs-calc-size.c index b756693..17d44ae 100644 --- a/btrfs-calc-size.c +++ b/btrfs-calc-size.c @@ -372,8 +372,8 @@ out_print: printf("\tTotal seeks: %Lu\n", stat.total_seeks); printf("\t\tForward seeks: %Lu\n", stat.forward_seeks); printf("\t\tBackward seeks: %Lu\n", stat.backward_seeks); - printf("\t\tAvg seek len: %Lu\n", stat.total_seek_len / - stat.total_seeks); + printf("\t\tAvg seek len: %llu\n", stat.total_seeks ? + stat.total_seek_len / stat.total_seeks : 0); print_seek_histogram(&stat); printf("\tTotal clusters: %Lu\n", stat.total_clusters); printf("\t\tAvg cluster size: %Lu\n", stat.total_cluster_size / -- 1.8.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html