jbd2_has_feature_csum2 1555 fs/jbd2/journal.c if (jbd2_has_feature_csum2(journal) && jbd2_has_feature_csum2 2253 fs/jbd2/journal.c if (jbd2_has_feature_csum2(journal)) jbd2_has_feature_csum2 1552 include/linux/jbd2.h return jbd2_has_feature_csum2(j) || jbd2_has_feature_csum3(j);