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[XFS] remove dead code for old inode item recovery
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1da177e4 1/*
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2 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
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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
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7 * published by the Free Software Foundation.
8 *
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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 *
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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
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17 */
18#ifndef __XFS_IALLOC_H__
19#define __XFS_IALLOC_H__
20
21struct xfs_buf;
22struct xfs_dinode;
23struct xfs_mount;
24struct xfs_trans;
25
26/*
27 * Allocation parameters for inode allocation.
28 */
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29#define XFS_IALLOC_INODES(mp) (mp)->m_ialloc_inos
30#define XFS_IALLOC_BLOCKS(mp) (mp)->m_ialloc_blks
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31
32/*
425f9ddd 33 * Move inodes in clusters of this size.
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34 */
35#define XFS_INODE_BIG_CLUSTER_SIZE 8192
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36#define XFS_INODE_CLUSTER_SIZE(mp) (mp)->m_inode_cluster_size
37
38/*
39 * Make an inode pointer out of the buffer/offset.
40 */
1da177e4 41#define XFS_MAKE_IPTR(mp,b,o) xfs_make_iptr(mp,b,o)
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42static inline struct xfs_dinode *
43xfs_make_iptr(struct xfs_mount *mp, struct xfs_buf *b, int o)
44{
45 return (xfs_dinode_t *)
46 (xfs_buf_offset(b, o << (mp)->m_sb.sb_inodelog));
47}
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48
49/*
50 * Find a free (set) bit in the inode bitmask.
51 */
1da177e4 52#define XFS_IALLOC_FIND_FREE(fp) xfs_ialloc_find_free(fp)
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53static inline int xfs_ialloc_find_free(xfs_inofree_t *fp)
54{
55 return xfs_lowbit64(*fp);
56}
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57
58
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59/*
60 * Allocate an inode on disk.
61 * Mode is used to tell whether the new inode will need space, and whether
62 * it is a directory.
63 *
64 * To work within the constraint of one allocation per transaction,
65 * xfs_dialloc() is designed to be called twice if it has to do an
66 * allocation to make more free inodes. If an inode is
67 * available without an allocation, agbp would be set to the current
68 * agbp and alloc_done set to false.
69 * If an allocation needed to be done, agbp would be set to the
70 * inode header of the allocation group and alloc_done set to true.
71 * The caller should then commit the current transaction and allocate a new
72 * transaction. xfs_dialloc() should then be called again with
73 * the agbp value returned from the previous call.
74 *
75 * Once we successfully pick an inode its number is returned and the
76 * on-disk data structures are updated. The inode itself is not read
77 * in, since doing so would break ordering constraints with xfs_reclaim.
78 *
79 * *agbp should be set to NULL on the first call, *alloc_done set to FALSE.
80 */
81int /* error */
82xfs_dialloc(
83 struct xfs_trans *tp, /* transaction pointer */
84 xfs_ino_t parent, /* parent inode (directory) */
85 mode_t mode, /* mode bits for new inode */
86 int okalloc, /* ok to allocate more space */
87 struct xfs_buf **agbp, /* buf for a.g. inode header */
88 boolean_t *alloc_done, /* an allocation was done to replenish
89 the free inodes */
90 xfs_ino_t *inop); /* inode number allocated */
91
92/*
93 * Free disk inode. Carefully avoids touching the incore inode, all
94 * manipulations incore are the caller's responsibility.
95 * The on-disk inode is not changed by this operation, only the
96 * btree (free inode mask) is changed.
97 */
98int /* error */
99xfs_difree(
100 struct xfs_trans *tp, /* transaction pointer */
101 xfs_ino_t inode, /* inode to be freed */
102 struct xfs_bmap_free *flist, /* extents to free */
103 int *delete, /* set if inode cluster was deleted */
104 xfs_ino_t *first_ino); /* first inode in deleted cluster */
105
106/*
107 * Return the location of the inode in bno/len/off,
108 * for mapping it into a buffer.
109 */
110int
111xfs_dilocate(
112 struct xfs_mount *mp, /* file system mount structure */
113 struct xfs_trans *tp, /* transaction pointer */
114 xfs_ino_t ino, /* inode to locate */
115 xfs_fsblock_t *bno, /* output: block containing inode */
116 int *len, /* output: num blocks in cluster*/
117 int *off, /* output: index in block of inode */
118 uint flags); /* flags for inode btree lookup */
119
120/*
121 * Compute and fill in value of m_in_maxlevels.
122 */
123void
124xfs_ialloc_compute_maxlevels(
125 struct xfs_mount *mp); /* file system mount structure */
126
127/*
128 * Log specified fields for the ag hdr (inode section)
129 */
130void
131xfs_ialloc_log_agi(
132 struct xfs_trans *tp, /* transaction pointer */
133 struct xfs_buf *bp, /* allocation group header buffer */
134 int fields); /* bitmask of fields to log */
135
136/*
137 * Read in the allocation group header (inode allocation section)
138 */
139int /* error */
140xfs_ialloc_read_agi(
141 struct xfs_mount *mp, /* file system mount structure */
142 struct xfs_trans *tp, /* transaction pointer */
143 xfs_agnumber_t agno, /* allocation group number */
144 struct xfs_buf **bpp); /* allocation group hdr buf */
145
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146/*
147 * Read in the allocation group header to initialise the per-ag data
148 * in the mount structure
149 */
150int
151xfs_ialloc_pagi_init(
152 struct xfs_mount *mp, /* file system mount structure */
153 struct xfs_trans *tp, /* transaction pointer */
154 xfs_agnumber_t agno); /* allocation group number */
155
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156/*
157 * Lookup the first record greater than or equal to ino
158 * in the btree given by cur.
159 */
160int xfs_inobt_lookup_ge(struct xfs_btree_cur *cur, xfs_agino_t ino,
161 __int32_t fcnt, xfs_inofree_t free, int *stat);
162
163/*
164 * Lookup the first record less than or equal to ino
165 * in the btree given by cur.
166 */
167int xfs_inobt_lookup_le(struct xfs_btree_cur *cur, xfs_agino_t ino,
168 __int32_t fcnt, xfs_inofree_t free, int *stat);
169
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170/*
171 * Get the data from the pointed-to record.
172 */
173extern int xfs_inobt_get_rec(struct xfs_btree_cur *cur, xfs_agino_t *ino,
174 __int32_t *fcnt, xfs_inofree_t *free, int *stat);
fe033cc8 175
1da177e4 176#endif /* __XFS_IALLOC_H__ */