journal_forget(9) centos man page | unix.com

JOURNAL_FORGET(9)					     The Linux Journalling API						 JOURNAL_FORGET(9)

NAME
       journal_forget - bforget for potentially-journaled buffers.

SYNOPSIS
       int 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@computer-surgery.co.uk>
	   Author.

       Stephen Tweedie <sct@redhat.com>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							 JOURNAL_FORGET(9)