EXT2F_INCOMPAT_SUPP_FSCK
((sblock.e2fs.e2fs_features_incompat & ~EXT2F_INCOMPAT_SUPP_FSCK) ||
if ((sblock.e2fs.e2fs_features_incompat & ~EXT2F_INCOMPAT_SUPP_FSCK)) {
sblock.e2fs.e2fs_features_incompat & ~EXT2F_INCOMPAT_SUPP_FSCK);