Check if features specified are used.
int journal_check_used_features(journal_t * journal, unsigned long compat, unsigned long ro, unsigned long incompat);
journal
Journal to check.
compat
bitmask of compatible features
ro
bitmask of features that force read-only mount
incompat
bitmask of incompatible features
Check whether the journal uses all of a given set of features. Return true (non-zero) if it does.