Data Types

The journalling layer uses typedefs to 'hide' the concrete definitions of the structures used. As a client of the JBD layer you can just rely on the using the pointer as a magic cookie of some sort. Obviously the hiding is not enforced as this is 'C'.

Structures

Table of Contents
typedef handle_t --  The handle_t type represents a single atomic update being performed by some process.
typedef journal_t --  The journal_t maintains all of the journaling state information for a single filesystem.
struct journal_s --  The journal_s type is the concrete type associated with journal_t.