JBD2_JOURNAL_LOCK_UP(9)             The Linux Journalling API             JBD2_JOURNAL_LOCK_UP(9)



NAME
       jbd2_journal_lock_updates - establish a transaction barrier.

SYNOPSIS
       void jbd2_journal_lock_updates(journal_t * journal);

ARGUMENTS
       journal
           Journal to establish a barrier on.

DESCRIPTION
       This locks out any further updates from being started, and blocks until all existing
       updates have completed, returning only once the journal is in a quiescent state with no
       updates running.

       The journal lock should not be held on entry.

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_LOCK_UP(9)