JBD2_HAS_INCOMPAT_FEATURE 1312 include/linux/jbd2.h if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2) || JBD2_HAS_INCOMPAT_FEATURE 1313 include/linux/jbd2.h JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3))