JBD2_JOURNAL_FORGET(9)              The Linux Journalling API              JBD2_JOURNAL_FORGET(9)



NAME
       jbd2_journal_forget - bforget for potentially-journaled buffers.

SYNOPSIS
       int jbd2_journal_forget(handle_t * handle, struct buffer_head * bh);

ARGUMENTS
       handle
           transaction handle

       bh
           bh to 'forget'

DESCRIPTION
       We can only do the bforget if there are no commits pending against the buffer. If the
       buffer is dirty in the current running transaction we can safely unlink it.

       bh may not be a journalled buffer at all - it may be a non-JBD buffer which came off the
       hashtable. Check for this.

       Decrements bh->b_count by one.

       Allow this call even if the handle has aborted --- it may be part of the caller's cleanup
       after an abort.

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_FORGET(9)