EXT2_HAS_RO_COMPAT_FEATURE
if (EXT2_HAS_RO_COMPAT_FEATURE(sb,EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)&&
if (!EXT2_HAS_RO_COMPAT_FEATURE(sb,
__le32 ret = EXT2_HAS_RO_COMPAT_FEATURE(sb,
EXT2_HAS_RO_COMPAT_FEATURE(sb, ~0U) ||
if (!sb_rdonly(sb) && (features = EXT2_HAS_RO_COMPAT_FEATURE(sb, ~EXT2_FEATURE_RO_COMPAT_SUPP))){