1/*
2 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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.
8 *
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.
13 *
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
17 */
18#include "xfs.h"
19#include "xfs_fs.h"
20#include "xfs_types.h"
21#include "xfs_log.h"
22#include "xfs_inum.h"
23#include "xfs_trans.h"
24#include "xfs_sb.h"
25#include "xfs_dmapi.h"
26#include "xfs_mount.h"
27#include "xfs_trans_priv.h"
28#include "xfs_extfree_item.h"
29
30/*
31 * This routine is called to allocate an "extent free intention"
32 * log item that will hold nextents worth of extents.  The
33 * caller must use all nextents extents, because we are not
34 * flexible about this at all.
35 */
36xfs_efi_log_item_t *
37xfs_trans_get_efi(xfs_trans_t	*tp,
38		  uint		nextents)
39{
40	xfs_efi_log_item_t	*efip;
41
42	ASSERT(tp != NULL);
43	ASSERT(nextents > 0);
44
45	efip = xfs_efi_init(tp->t_mountp, nextents);
46	ASSERT(efip != NULL);
47
48	/*
49	 * Get a log_item_desc to point at the new item.
50	 */
51	(void) xfs_trans_add_item(tp, (xfs_log_item_t*)efip);
52
53	return (efip);
54}
55
56/*
57 * This routine is called to indicate that the described
58 * extent is to be logged as needing to be freed.  It should
59 * be called once for each extent to be freed.
60 */
61void
62xfs_trans_log_efi_extent(xfs_trans_t		*tp,
63			 xfs_efi_log_item_t	*efip,
64			 xfs_fsblock_t		start_block,
65			 xfs_extlen_t		ext_len)
66{
67	xfs_log_item_desc_t	*lidp;
68	uint			next_extent;
69	xfs_extent_t		*extp;
70
71	lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efip);
72	ASSERT(lidp != NULL);
73
74	tp->t_flags |= XFS_TRANS_DIRTY;
75	lidp->lid_flags |= XFS_LID_DIRTY;
76
77	next_extent = efip->efi_next_extent;
78	ASSERT(next_extent < efip->efi_format.efi_nextents);
79	extp = &(efip->efi_format.efi_extents[next_extent]);
80	extp->ext_start = start_block;
81	extp->ext_len = ext_len;
82	efip->efi_next_extent++;
83}
84
85
86/*
87 * This routine is called to allocate an "extent free done"
88 * log item that will hold nextents worth of extents.  The
89 * caller must use all nextents extents, because we are not
90 * flexible about this at all.
91 */
92xfs_efd_log_item_t *
93xfs_trans_get_efd(xfs_trans_t		*tp,
94		  xfs_efi_log_item_t	*efip,
95		  uint			nextents)
96{
97	xfs_efd_log_item_t	*efdp;
98
99	ASSERT(tp != NULL);
100	ASSERT(nextents > 0);
101
102	efdp = xfs_efd_init(tp->t_mountp, efip, nextents);
103	ASSERT(efdp != NULL);
104
105	/*
106	 * Get a log_item_desc to point at the new item.
107	 */
108	(void) xfs_trans_add_item(tp, (xfs_log_item_t*)efdp);
109
110	return (efdp);
111}
112
113/*
114 * This routine is called to indicate that the described
115 * extent is to be logged as having been freed.  It should
116 * be called once for each extent freed.
117 */
118void
119xfs_trans_log_efd_extent(xfs_trans_t		*tp,
120			 xfs_efd_log_item_t	*efdp,
121			 xfs_fsblock_t		start_block,
122			 xfs_extlen_t		ext_len)
123{
124	xfs_log_item_desc_t	*lidp;
125	uint			next_extent;
126	xfs_extent_t		*extp;
127
128	lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efdp);
129	ASSERT(lidp != NULL);
130
131	tp->t_flags |= XFS_TRANS_DIRTY;
132	lidp->lid_flags |= XFS_LID_DIRTY;
133
134	next_extent = efdp->efd_next_extent;
135	ASSERT(next_extent < efdp->efd_format.efd_nextents);
136	extp = &(efdp->efd_format.efd_extents[next_extent]);
137	extp->ext_start = start_block;
138	extp->ext_len = ext_len;
139	efdp->efd_next_extent++;
140}
141