File: [Development] / xfs-linux / xfs_log.h (download)
Revision 1.6, Wed Dec 15 03:19:05 1993 UTC (23 years, 10 months ago) by miken
Branch: MAIN
Changes since 1.5: +5 -19
lines
Redo indents and remove TICKET_INT code.
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#ifndef _XFS_LOG_H
#define _XFS_LOG_H
#define XFS_LSN_CMP(x,y) ((x) - (y))
#define XFS_LSN_DIFF(x,y) ((x) - (y))
#ifndef LOG_DEBUG
caddr_t xfs_log_alloc(size_t, uint, xfs_lsn_t*);
void xfs_log_free(caddr_t, size_t);
void xfs_log_notify(void(*)(void*), void*, xfs_lsn_t);
int xfs_log_reserve(struct xfs_mount *, int, int);
#ifndef SIM
xfs_lsn_t xfs_log_lsn(struct xfs_mount *);
void xfs_log_sync(xfs_lsn_t);
void xfs_log_unreserve(struct xfs_mount *, uint);
void xfs_log_wait(xfs_lsn_t);
#endif
#else
/*
* Macros, structures, prototypes for interface to the log manager.
*/
/*
* Flags to xfs_log_mount
*/
#define XFS_LOG_RECOVER 0x1
/*
* Flags to xfs_log_reserve()
*
* XFS_LOG_SLEEP: If space is not available, sleep
* XFS_LOG_NOSLEEP: If space is not available, return error
* XFS_LOG_PERM_RESERV: Permanent reservation. When writes are
* performed against this type of reservation, the reservation
* is not decreased. Long running transactions should use this.
*/
#define XFS_LOG_SLEEP 0x1
#define XFS_LOG_NOSLEEP 0x2
#define XFS_LOG_PERM_RESERV 0x4
/*
* Flags to xfs_log_force()
*
* XFS_LOG_SYNC: Synchronous force in-core log to disk.
* default: Force out asynchronously
* XFS_LOG_FORCE: Start in-core log write now.
* XFS_LOG_URGE: Start write within some window of time.
*/
#define XFS_LOG_SYNC 0x1
#define XFS_LOG_FORCE 0x2
#define XFS_LOG_URGE 0x4
/* Log Clients */
#define XFS_TRANSACTION_MANAGER 1
#define XFS_VOLUME_MANAGER 2
typedef struct xfs_log_iovec {
caddr_t i_addr; /* beginning address of region */
uint i_len; /* length in bytes of region */
xfs_lsn_t i_lsn; /* log sequence number of region */
} xfs_log_iovec_t;
typedef void* xfs_log_ticket_t;
/* Log manager interfaces */
void xfs_log_done(xfs_mount_t *mp, xfs_log_ticket_t ticket);
int xfs_log_force(xfs_mount_t *mp, xfs_log_ticket_t ticket, uint flags);
int xfs_log_init();
int xfs_log_mount(xfs_mount_t *mp, dev_t log_dev, uint flags);
int xfs_log_new_transaction(xfs_mount_t *mp, xfs_log_ticket_t ticket,
xfs_tid_t old_tid, xfs_tid_t new_tid);
void xfs_log_notify(xfs_mount_t *mp, xfs_lsn_t lsn,
void (*callback_func)(void*), void* callback_arg);
int xfs_log_reserve(xfs_mount_t *mp, xfs_tid_t tid, uint length,
xfs_log_ticket_t *ticket, char clientid, uint flags);
int xfs_log_write(xfs_mount_t *mp, xfs_log_iovec_t region[], int nentries,
xfs_log_ticket_t ticket);
/* Log manager utility interfaces */
void xfs_log_print(xfs_mount_t *mp, dev_t log_dev);
#endif /* LOG_DEBUG */
#endif /* _XFS_LOG_H */