JBD2_JOURNAL_CHECK_U(9)             The Linux Journalling API             JBD2_JOURNAL_CHECK_U(9)



NAME
       jbd2_journal_check_used_features - Check if features specified are used.

SYNOPSIS
       int jbd2_journal_check_used_features(journal_t * journal, unsigned long compat,
                                            unsigned long ro, unsigned long incompat);

ARGUMENTS
       journal
           Journal to check.

       compat
           bitmask of compatible features

       ro
           bitmask of features that force read-only mount

       incompat
           bitmask of incompatible features

DESCRIPTION
       Check whether the journal uses all of a given set of features. Return true (non-zero) if
       it does.

AUTHORS
       Roger Gammans <rgammans AT computer-surgery.uk>
           Author.

       Stephen Tweedie <sct AT redhat.com>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   JBD2_JOURNAL_CHECK_U(9)