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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
Nathan Scotta844f452005-11-02 14:38:42 +110019#include "xfs_fs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include "xfs_types.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include "xfs_log.h"
Nathan Scotta844f452005-11-02 14:38:42 +110022#include "xfs_inum.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include "xfs_trans.h"
24#include "xfs_sb.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#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}