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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
3ebe7d2d DC |
2 | /* |
3 | * Copyright (c) 2008-2010, 2013 Dave Chinner | |
4 | * All Rights Reserved. | |
3ebe7d2d DC |
5 | */ |
6 | #include "xfs.h" | |
7 | #include "xfs_fs.h" | |
70a9883c | 8 | #include "xfs_shared.h" |
3ec6efa7 | 9 | #include "xfs_format.h" |
239880ef | 10 | #include "xfs_log_format.h" |
3ec6efa7 DW |
11 | #include "xfs_trans_resv.h" |
12 | #include "xfs_mount.h" | |
13 | #include "xfs_inode.h" | |
239880ef | 14 | #include "xfs_trans.h" |
3ebe7d2d | 15 | #include "xfs_trans_priv.h" |
3ebe7d2d | 16 | #include "xfs_icreate_item.h" |
1234351c | 17 | #include "xfs_log.h" |
86ffa471 DW |
18 | #include "xfs_log_priv.h" |
19 | #include "xfs_log_recover.h" | |
3ec6efa7 DW |
20 | #include "xfs_ialloc.h" |
21 | #include "xfs_trace.h" | |
3ebe7d2d | 22 | |
182696fb | 23 | struct kmem_cache *xfs_icreate_cache; /* inode create item */ |
3ebe7d2d DC |
24 | |
25 | static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip) | |
26 | { | |
27 | return container_of(lip, struct xfs_icreate_item, ic_item); | |
28 | } | |
29 | ||
30 | /* | |
31 | * This returns the number of iovecs needed to log the given inode item. | |
32 | * | |
33 | * We only need one iovec for the icreate log structure. | |
34 | */ | |
166d1368 | 35 | STATIC void |
3ebe7d2d | 36 | xfs_icreate_item_size( |
166d1368 DC |
37 | struct xfs_log_item *lip, |
38 | int *nvecs, | |
39 | int *nbytes) | |
3ebe7d2d | 40 | { |
166d1368 DC |
41 | *nvecs += 1; |
42 | *nbytes += sizeof(struct xfs_icreate_log); | |
3ebe7d2d DC |
43 | } |
44 | ||
45 | /* | |
46 | * This is called to fill in the vector of log iovecs for the | |
47 | * given inode create log item. | |
48 | */ | |
49 | STATIC void | |
50 | xfs_icreate_item_format( | |
51 | struct xfs_log_item *lip, | |
bde7cff6 | 52 | struct xfs_log_vec *lv) |
3ebe7d2d DC |
53 | { |
54 | struct xfs_icreate_item *icp = ICR_ITEM(lip); | |
bde7cff6 | 55 | struct xfs_log_iovec *vecp = NULL; |
3ebe7d2d | 56 | |
bde7cff6 | 57 | xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE, |
1234351c CH |
58 | &icp->ic_format, |
59 | sizeof(struct xfs_icreate_log)); | |
3ebe7d2d DC |
60 | } |
61 | ||
3ebe7d2d | 62 | STATIC void |
ddf92053 | 63 | xfs_icreate_item_release( |
3ebe7d2d DC |
64 | struct xfs_log_item *lip) |
65 | { | |
c230a4a8 | 66 | kmem_free(ICR_ITEM(lip)->ic_item.li_lv_shadow); |
182696fb | 67 | kmem_cache_free(xfs_icreate_cache, ICR_ITEM(lip)); |
3ebe7d2d DC |
68 | } |
69 | ||
bb6e0ebe | 70 | static const struct xfs_item_ops xfs_icreate_item_ops = { |
9ce632a2 | 71 | .flags = XFS_ITEM_RELEASE_WHEN_COMMITTED, |
3ebe7d2d DC |
72 | .iop_size = xfs_icreate_item_size, |
73 | .iop_format = xfs_icreate_item_format, | |
ddf92053 | 74 | .iop_release = xfs_icreate_item_release, |
3ebe7d2d DC |
75 | }; |
76 | ||
77 | ||
78 | /* | |
79 | * Initialize the inode log item for a newly allocated (in-core) inode. | |
80 | * | |
81 | * Inode extents can only reside within an AG. Hence specify the starting | |
82 | * block for the inode chunk by offset within an AG as well as the | |
83 | * length of the allocated extent. | |
84 | * | |
85 | * This joins the item to the transaction and marks it dirty so | |
86 | * that we don't need a separate call to do this, nor does the | |
87 | * caller need to know anything about the icreate item. | |
88 | */ | |
89 | void | |
90 | xfs_icreate_log( | |
91 | struct xfs_trans *tp, | |
92 | xfs_agnumber_t agno, | |
93 | xfs_agblock_t agbno, | |
94 | unsigned int count, | |
95 | unsigned int inode_size, | |
96 | xfs_agblock_t length, | |
97 | unsigned int generation) | |
98 | { | |
99 | struct xfs_icreate_item *icp; | |
100 | ||
182696fb | 101 | icp = kmem_cache_zalloc(xfs_icreate_cache, GFP_KERNEL | __GFP_NOFAIL); |
3ebe7d2d DC |
102 | |
103 | xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE, | |
104 | &xfs_icreate_item_ops); | |
105 | ||
106 | icp->ic_format.icl_type = XFS_LI_ICREATE; | |
107 | icp->ic_format.icl_size = 1; /* single vector */ | |
108 | icp->ic_format.icl_ag = cpu_to_be32(agno); | |
109 | icp->ic_format.icl_agbno = cpu_to_be32(agbno); | |
110 | icp->ic_format.icl_count = cpu_to_be32(count); | |
111 | icp->ic_format.icl_isize = cpu_to_be32(inode_size); | |
112 | icp->ic_format.icl_length = cpu_to_be32(length); | |
113 | icp->ic_format.icl_gen = cpu_to_be32(generation); | |
114 | ||
115 | xfs_trans_add_item(tp, &icp->ic_item); | |
116 | tp->t_flags |= XFS_TRANS_DIRTY; | |
e6631f85 | 117 | set_bit(XFS_LI_DIRTY, &icp->ic_item.li_flags); |
3ebe7d2d | 118 | } |
86ffa471 DW |
119 | |
120 | static enum xlog_recover_reorder | |
121 | xlog_recover_icreate_reorder( | |
122 | struct xlog_recover_item *item) | |
123 | { | |
124 | /* | |
125 | * Inode allocation buffers must be replayed before subsequent inode | |
126 | * items try to modify those buffers. ICREATE items are the logical | |
127 | * equivalent of logging a newly initialized inode buffer, so recover | |
128 | * these at the same time that we recover logged buffers. | |
129 | */ | |
130 | return XLOG_REORDER_BUFFER_LIST; | |
131 | } | |
132 | ||
3ec6efa7 DW |
133 | /* |
134 | * This routine is called when an inode create format structure is found in a | |
135 | * committed transaction in the log. It's purpose is to initialise the inodes | |
136 | * being allocated on disk. This requires us to get inode cluster buffers that | |
137 | * match the range to be initialised, stamped with inode templates and written | |
138 | * by delayed write so that subsequent modifications will hit the cached buffer | |
139 | * and only need writing out at the end of recovery. | |
140 | */ | |
141 | STATIC int | |
142 | xlog_recover_icreate_commit_pass2( | |
143 | struct xlog *log, | |
144 | struct list_head *buffer_list, | |
145 | struct xlog_recover_item *item, | |
146 | xfs_lsn_t lsn) | |
147 | { | |
148 | struct xfs_mount *mp = log->l_mp; | |
149 | struct xfs_icreate_log *icl; | |
150 | struct xfs_ino_geometry *igeo = M_IGEO(mp); | |
151 | xfs_agnumber_t agno; | |
152 | xfs_agblock_t agbno; | |
153 | unsigned int count; | |
154 | unsigned int isize; | |
155 | xfs_agblock_t length; | |
156 | int bb_per_cluster; | |
157 | int cancel_count; | |
158 | int nbufs; | |
159 | int i; | |
160 | ||
161 | icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr; | |
162 | if (icl->icl_type != XFS_LI_ICREATE) { | |
163 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad type"); | |
164 | return -EINVAL; | |
165 | } | |
166 | ||
167 | if (icl->icl_size != 1) { | |
168 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad icl size"); | |
169 | return -EINVAL; | |
170 | } | |
171 | ||
172 | agno = be32_to_cpu(icl->icl_ag); | |
173 | if (agno >= mp->m_sb.sb_agcount) { | |
174 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agno"); | |
175 | return -EINVAL; | |
176 | } | |
177 | agbno = be32_to_cpu(icl->icl_agbno); | |
178 | if (!agbno || agbno == NULLAGBLOCK || agbno >= mp->m_sb.sb_agblocks) { | |
179 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agbno"); | |
180 | return -EINVAL; | |
181 | } | |
182 | isize = be32_to_cpu(icl->icl_isize); | |
183 | if (isize != mp->m_sb.sb_inodesize) { | |
184 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad isize"); | |
185 | return -EINVAL; | |
186 | } | |
187 | count = be32_to_cpu(icl->icl_count); | |
188 | if (!count) { | |
189 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad count"); | |
190 | return -EINVAL; | |
191 | } | |
192 | length = be32_to_cpu(icl->icl_length); | |
193 | if (!length || length >= mp->m_sb.sb_agblocks) { | |
194 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad length"); | |
195 | return -EINVAL; | |
196 | } | |
197 | ||
198 | /* | |
199 | * The inode chunk is either full or sparse and we only support | |
200 | * m_ino_geo.ialloc_min_blks sized sparse allocations at this time. | |
201 | */ | |
202 | if (length != igeo->ialloc_blks && | |
203 | length != igeo->ialloc_min_blks) { | |
204 | xfs_warn(log->l_mp, | |
edf27485 | 205 | "%s: unsupported chunk length", __func__); |
3ec6efa7 DW |
206 | return -EINVAL; |
207 | } | |
208 | ||
209 | /* verify inode count is consistent with extent length */ | |
210 | if ((count >> mp->m_sb.sb_inopblog) != length) { | |
211 | xfs_warn(log->l_mp, | |
212 | "%s: inconsistent inode count and chunk length", | |
edf27485 | 213 | __func__); |
3ec6efa7 DW |
214 | return -EINVAL; |
215 | } | |
216 | ||
217 | /* | |
218 | * The icreate transaction can cover multiple cluster buffers and these | |
219 | * buffers could have been freed and reused. Check the individual | |
220 | * buffers for cancellation so we don't overwrite anything written after | |
221 | * a cancellation. | |
222 | */ | |
223 | bb_per_cluster = XFS_FSB_TO_BB(mp, igeo->blocks_per_cluster); | |
224 | nbufs = length / igeo->blocks_per_cluster; | |
225 | for (i = 0, cancel_count = 0; i < nbufs; i++) { | |
226 | xfs_daddr_t daddr; | |
227 | ||
228 | daddr = XFS_AGB_TO_DADDR(mp, agno, | |
229 | agbno + i * igeo->blocks_per_cluster); | |
230 | if (xlog_is_buffer_cancelled(log, daddr, bb_per_cluster)) | |
231 | cancel_count++; | |
232 | } | |
233 | ||
234 | /* | |
235 | * We currently only use icreate for a single allocation at a time. This | |
236 | * means we should expect either all or none of the buffers to be | |
237 | * cancelled. Be conservative and skip replay if at least one buffer is | |
238 | * cancelled, but warn the user that something is awry if the buffers | |
239 | * are not consistent. | |
240 | * | |
241 | * XXX: This must be refined to only skip cancelled clusters once we use | |
242 | * icreate for multiple chunk allocations. | |
243 | */ | |
244 | ASSERT(!cancel_count || cancel_count == nbufs); | |
245 | if (cancel_count) { | |
246 | if (cancel_count != nbufs) | |
247 | xfs_warn(mp, | |
248 | "WARNING: partial inode chunk cancellation, skipped icreate."); | |
249 | trace_xfs_log_recover_icreate_cancel(log, icl); | |
250 | return 0; | |
251 | } | |
252 | ||
253 | trace_xfs_log_recover_icreate_recover(log, icl); | |
254 | return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno, | |
255 | length, be32_to_cpu(icl->icl_gen)); | |
256 | } | |
257 | ||
86ffa471 DW |
258 | const struct xlog_recover_item_ops xlog_icreate_item_ops = { |
259 | .item_type = XFS_LI_ICREATE, | |
260 | .reorder = xlog_recover_icreate_reorder, | |
3ec6efa7 | 261 | .commit_pass2 = xlog_recover_icreate_commit_pass2, |
86ffa471 | 262 | }; |