AVAIL
.f_bavail = AVAIL / BSIZE,
.f_bresvd = (TOTAL - USED) / BSIZE - AVAIL / BSIZE,
.f_bavail = AVAIL / BSIZE,
.f_bresvd = (TOTAL - USED) / BSIZE - AVAIL / BSIZE,
.f_bavail = AVAIL,
.f_bresvd = TOTAL - USED - AVAIL,