$ busybox dd if=/dev/zero of=/dev/loop0 bs=100M count=8; echo $?
8+0 records in
7+0 records out <=========== FIXED, was 7+1
805220352 bytes (767.9MB) copied, 0.464010 seconds, 1.6GB/s
1
function old new delta
write_and_stats 97 99 +2
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>