2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
23 #define BLOCK_LSN(lsn) ((uint)(lsn))
25 /* this is used in a spot where we might otherwise double-endian-flip */
26 #define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0])
30 * By comparing each component, we don't have to worry about extra
31 * endian issues in treating two 32 bit numbers as one 64 bit number
33 static inline xfs_lsn_t
_lsn_cmp(xfs_lsn_t lsn1
, xfs_lsn_t lsn2
)
35 if (CYCLE_LSN(lsn1
) != CYCLE_LSN(lsn2
))
36 return (CYCLE_LSN(lsn1
)<CYCLE_LSN(lsn2
))? -999 : 999;
38 if (BLOCK_LSN(lsn1
) != BLOCK_LSN(lsn2
))
39 return (BLOCK_LSN(lsn1
)<BLOCK_LSN(lsn2
))? -999 : 999;
44 #define XFS_LSN_CMP(x,y) _lsn_cmp(x,y)
47 * Macros, structures, prototypes for interface to the log manager.
51 * Flags to xfs_log_done()
53 #define XFS_LOG_REL_PERM_RESERV 0x1
56 * Flags to xfs_log_force()
58 * XFS_LOG_SYNC: Synchronous force in-core log to disk
60 #define XFS_LOG_SYNC 0x1
62 #endif /* __KERNEL__ */
66 #define XFS_TRANSACTION 0x69
67 #define XFS_VOLUME 0x2
71 /* Region types for iovec's i_type */
72 #define XLOG_REG_TYPE_BFORMAT 1
73 #define XLOG_REG_TYPE_BCHUNK 2
74 #define XLOG_REG_TYPE_EFI_FORMAT 3
75 #define XLOG_REG_TYPE_EFD_FORMAT 4
76 #define XLOG_REG_TYPE_IFORMAT 5
77 #define XLOG_REG_TYPE_ICORE 6
78 #define XLOG_REG_TYPE_IEXT 7
79 #define XLOG_REG_TYPE_IBROOT 8
80 #define XLOG_REG_TYPE_ILOCAL 9
81 #define XLOG_REG_TYPE_IATTR_EXT 10
82 #define XLOG_REG_TYPE_IATTR_BROOT 11
83 #define XLOG_REG_TYPE_IATTR_LOCAL 12
84 #define XLOG_REG_TYPE_QFORMAT 13
85 #define XLOG_REG_TYPE_DQUOT 14
86 #define XLOG_REG_TYPE_QUOTAOFF 15
87 #define XLOG_REG_TYPE_LRHEADER 16
88 #define XLOG_REG_TYPE_UNMOUNT 17
89 #define XLOG_REG_TYPE_COMMIT 18
90 #define XLOG_REG_TYPE_TRANSHDR 19
91 #define XLOG_REG_TYPE_MAX 19
93 typedef struct xfs_log_iovec
{
94 void *i_addr
; /* beginning address of region */
95 int i_len
; /* length in bytes of region */
96 uint i_type
; /* type of region */
100 struct xfs_log_vec
*lv_next
; /* next lv in build list */
101 int lv_niovecs
; /* number of iovecs in lv */
102 struct xfs_log_iovec
*lv_iovecp
; /* iovec array */
103 struct xfs_log_item
*lv_item
; /* owner */
104 char *lv_buf
; /* formatted buffer */
105 int lv_buf_len
; /* size of formatted buffer */
109 * Structure used to pass callback function and the function's argument
110 * to the log manager.
112 typedef struct xfs_log_callback
{
113 struct xfs_log_callback
*cb_next
;
114 void (*cb_func
)(void *, int);
116 } xfs_log_callback_t
;
120 /* Log manager interfaces */
128 void xfs_log_item_init(struct xfs_mount
*mp
,
129 struct xfs_log_item
*item
,
131 const struct xfs_item_ops
*ops
);
133 xfs_lsn_t
xfs_log_done(struct xfs_mount
*mp
,
134 struct xlog_ticket
*ticket
,
135 struct xlog_in_core
**iclog
,
137 int _xfs_log_force(struct xfs_mount
*mp
,
140 void xfs_log_force(struct xfs_mount
*mp
,
142 int _xfs_log_force_lsn(struct xfs_mount
*mp
,
146 void xfs_log_force_lsn(struct xfs_mount
*mp
,
149 int xfs_log_mount(struct xfs_mount
*mp
,
150 struct xfs_buftarg
*log_target
,
151 xfs_daddr_t start_block
,
153 int xfs_log_mount_finish(struct xfs_mount
*mp
);
154 xfs_lsn_t
xlog_assign_tail_lsn(struct xfs_mount
*mp
);
155 xfs_lsn_t
xlog_assign_tail_lsn_locked(struct xfs_mount
*mp
);
156 void xfs_log_space_wake(struct xfs_mount
*mp
);
157 int xfs_log_notify(struct xfs_mount
*mp
,
158 struct xlog_in_core
*iclog
,
159 xfs_log_callback_t
*callback_entry
);
160 int xfs_log_release_iclog(struct xfs_mount
*mp
,
161 struct xlog_in_core
*iclog
);
162 int xfs_log_reserve(struct xfs_mount
*mp
,
165 struct xlog_ticket
**ticket
,
169 int xfs_log_regrant(struct xfs_mount
*mp
, struct xlog_ticket
*tic
);
170 int xfs_log_unmount_write(struct xfs_mount
*mp
);
171 void xfs_log_unmount(struct xfs_mount
*mp
);
172 int xfs_log_force_umount(struct xfs_mount
*mp
, int logerror
);
173 int xfs_log_need_covered(struct xfs_mount
*mp
);
175 void xlog_iodone(struct xfs_buf
*);
177 struct xlog_ticket
*xfs_log_ticket_get(struct xlog_ticket
*ticket
);
178 void xfs_log_ticket_put(struct xlog_ticket
*ticket
);
180 int xfs_log_commit_cil(struct xfs_mount
*mp
, struct xfs_trans
*tp
,
181 xfs_lsn_t
*commit_lsn
, int flags
);
182 bool xfs_log_item_in_current_chkpt(struct xfs_log_item
*lip
);
185 #endif /* __XFS_LOG_H__ */
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