E2FS_BG_BLOCK_UNINIT
(fs->e2fs_gd[cg].ext2bgd_flags & h2fs16(E2FS_BG_BLOCK_UNINIT)))) {
fs->e2fs_gd[cg].ext2bgd_flags &= h2fs16(~E2FS_BG_BLOCK_UNINIT);
(fs->e2fs_gd[cg].ext2bgd_flags & h2fs16(E2FS_BG_BLOCK_UNINIT)) == 0);