reserved = OSD_STATFS_RESERVED_SIZE >> bshift;
if (likely(osfs->os_blocks >= reserved << OSD_STATFS_RESERVED_SHIFT))
reserved = osfs->os_blocks >> OSD_STATFS_RESERVED_SHIFT;
reserved = OSD_STATFS_RESERVED_SIZE >> bshift;
if (likely(osfs->os_blocks >= reserved << OSD_STATFS_RESERVED_SHIFT))
reserved = osfs->os_blocks >> OSD_STATFS_RESERVED_SHIFT;