Provided by:
linux-doc-2.6.15_2.6.15-23.39_all 
NAME
typedef journal_t - The journal_t maintains all of the journaling state
information for a single filesystem.
SYNOPSIS
typedef journal_t;
DESCRIPTION
journal_t is linked to from the fs superblock structure.
We use the journal_t to keep track of all outstanding transaction
activity on the filesystem, and to manage the state of the log writing
process.
This is an opaque datatype.
AUTHORS
Roger Gammans <rgammans@computer-surgery.co.uk>, Stephen Tweedie
<sct@redhat.com>.