Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_fs.h" |
1da177e4 | 20 | #include "xfs_types.h" |
1da177e4 LT |
21 | #include "xfs_log.h" |
22 | #include "xfs_trans.h" | |
23 | #include "xfs_sb.h" | |
da353b0d | 24 | #include "xfs_ag.h" |
1da177e4 LT |
25 | #include "xfs_mount.h" |
26 | #include "xfs_trans_priv.h" | |
27 | #include "xfs_extfree_item.h" | |
28 | ||
29 | /* | |
30 | * This routine is called to allocate an "extent free intention" | |
31 | * log item that will hold nextents worth of extents. The | |
32 | * caller must use all nextents extents, because we are not | |
33 | * flexible about this at all. | |
34 | */ | |
35 | xfs_efi_log_item_t * | |
36 | xfs_trans_get_efi(xfs_trans_t *tp, | |
37 | uint nextents) | |
38 | { | |
39 | xfs_efi_log_item_t *efip; | |
40 | ||
41 | ASSERT(tp != NULL); | |
42 | ASSERT(nextents > 0); | |
43 | ||
44 | efip = xfs_efi_init(tp->t_mountp, nextents); | |
45 | ASSERT(efip != NULL); | |
46 | ||
47 | /* | |
48 | * Get a log_item_desc to point at the new item. | |
49 | */ | |
e98c414f CH |
50 | xfs_trans_add_item(tp, &efip->efi_item); |
51 | return efip; | |
1da177e4 LT |
52 | } |
53 | ||
54 | /* | |
55 | * This routine is called to indicate that the described | |
56 | * extent is to be logged as needing to be freed. It should | |
57 | * be called once for each extent to be freed. | |
58 | */ | |
59 | void | |
60 | xfs_trans_log_efi_extent(xfs_trans_t *tp, | |
61 | xfs_efi_log_item_t *efip, | |
62 | xfs_fsblock_t start_block, | |
63 | xfs_extlen_t ext_len) | |
64 | { | |
1da177e4 LT |
65 | uint next_extent; |
66 | xfs_extent_t *extp; | |
67 | ||
1da177e4 | 68 | tp->t_flags |= XFS_TRANS_DIRTY; |
e98c414f | 69 | efip->efi_item.li_desc->lid_flags |= XFS_LID_DIRTY; |
1da177e4 | 70 | |
b199c8a4 DC |
71 | /* |
72 | * atomic_inc_return gives us the value after the increment; | |
73 | * we want to use it as an array index so we need to subtract 1 from | |
74 | * it. | |
75 | */ | |
76 | next_extent = atomic_inc_return(&efip->efi_next_extent) - 1; | |
1da177e4 LT |
77 | ASSERT(next_extent < efip->efi_format.efi_nextents); |
78 | extp = &(efip->efi_format.efi_extents[next_extent]); | |
79 | extp->ext_start = start_block; | |
80 | extp->ext_len = ext_len; | |
1da177e4 LT |
81 | } |
82 | ||
83 | ||
84 | /* | |
85 | * This routine is called to allocate an "extent free done" | |
86 | * log item that will hold nextents worth of extents. The | |
87 | * caller must use all nextents extents, because we are not | |
88 | * flexible about this at all. | |
89 | */ | |
90 | xfs_efd_log_item_t * | |
91 | xfs_trans_get_efd(xfs_trans_t *tp, | |
92 | xfs_efi_log_item_t *efip, | |
93 | uint nextents) | |
94 | { | |
95 | xfs_efd_log_item_t *efdp; | |
96 | ||
97 | ASSERT(tp != NULL); | |
98 | ASSERT(nextents > 0); | |
99 | ||
100 | efdp = xfs_efd_init(tp->t_mountp, efip, nextents); | |
101 | ASSERT(efdp != NULL); | |
102 | ||
103 | /* | |
104 | * Get a log_item_desc to point at the new item. | |
105 | */ | |
e98c414f CH |
106 | xfs_trans_add_item(tp, &efdp->efd_item); |
107 | return efdp; | |
1da177e4 LT |
108 | } |
109 | ||
110 | /* | |
111 | * This routine is called to indicate that the described | |
112 | * extent is to be logged as having been freed. It should | |
113 | * be called once for each extent freed. | |
114 | */ | |
115 | void | |
116 | xfs_trans_log_efd_extent(xfs_trans_t *tp, | |
117 | xfs_efd_log_item_t *efdp, | |
118 | xfs_fsblock_t start_block, | |
119 | xfs_extlen_t ext_len) | |
120 | { | |
1da177e4 LT |
121 | uint next_extent; |
122 | xfs_extent_t *extp; | |
123 | ||
1da177e4 | 124 | tp->t_flags |= XFS_TRANS_DIRTY; |
e98c414f | 125 | efdp->efd_item.li_desc->lid_flags |= XFS_LID_DIRTY; |
1da177e4 LT |
126 | |
127 | next_extent = efdp->efd_next_extent; | |
128 | ASSERT(next_extent < efdp->efd_format.efd_nextents); | |
129 | extp = &(efdp->efd_format.efd_extents[next_extent]); | |
130 | extp->ext_start = start_block; | |
131 | extp->ext_len = ext_len; | |
132 | efdp->efd_next_extent++; | |
133 | } |