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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 DC |
22 | |
23 | kmem_zone_t *xfs_icreate_zone; /* inode create item zone */ | |
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 | { | |
377bcd5f | 66 | kmem_cache_free(xfs_icreate_zone, ICR_ITEM(lip)); |
3ebe7d2d DC |
67 | } |
68 | ||
bb6e0ebe | 69 | static const struct xfs_item_ops xfs_icreate_item_ops = { |
9ce632a2 | 70 | .flags = XFS_ITEM_RELEASE_WHEN_COMMITTED, |
3ebe7d2d DC |
71 | .iop_size = xfs_icreate_item_size, |
72 | .iop_format = xfs_icreate_item_format, | |
ddf92053 | 73 | .iop_release = xfs_icreate_item_release, |
3ebe7d2d DC |
74 | }; |
75 | ||
76 | ||
77 | /* | |
78 | * Initialize the inode log item for a newly allocated (in-core) inode. | |
79 | * | |
80 | * Inode extents can only reside within an AG. Hence specify the starting | |
81 | * block for the inode chunk by offset within an AG as well as the | |
82 | * length of the allocated extent. | |
83 | * | |
84 | * This joins the item to the transaction and marks it dirty so | |
85 | * that we don't need a separate call to do this, nor does the | |
86 | * caller need to know anything about the icreate item. | |
87 | */ | |
88 | void | |
89 | xfs_icreate_log( | |
90 | struct xfs_trans *tp, | |
91 | xfs_agnumber_t agno, | |
92 | xfs_agblock_t agbno, | |
93 | unsigned int count, | |
94 | unsigned int inode_size, | |
95 | xfs_agblock_t length, | |
96 | unsigned int generation) | |
97 | { | |
98 | struct xfs_icreate_item *icp; | |
99 | ||
32a2b11f | 100 | icp = kmem_cache_zalloc(xfs_icreate_zone, GFP_KERNEL | __GFP_NOFAIL); |
3ebe7d2d DC |
101 | |
102 | xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE, | |
103 | &xfs_icreate_item_ops); | |
104 | ||
105 | icp->ic_format.icl_type = XFS_LI_ICREATE; | |
106 | icp->ic_format.icl_size = 1; /* single vector */ | |
107 | icp->ic_format.icl_ag = cpu_to_be32(agno); | |
108 | icp->ic_format.icl_agbno = cpu_to_be32(agbno); | |
109 | icp->ic_format.icl_count = cpu_to_be32(count); | |
110 | icp->ic_format.icl_isize = cpu_to_be32(inode_size); | |
111 | icp->ic_format.icl_length = cpu_to_be32(length); | |
112 | icp->ic_format.icl_gen = cpu_to_be32(generation); | |
113 | ||
114 | xfs_trans_add_item(tp, &icp->ic_item); | |
115 | tp->t_flags |= XFS_TRANS_DIRTY; | |
e6631f85 | 116 | set_bit(XFS_LI_DIRTY, &icp->ic_item.li_flags); |
3ebe7d2d | 117 | } |
86ffa471 DW |
118 | |
119 | static enum xlog_recover_reorder | |
120 | xlog_recover_icreate_reorder( | |
121 | struct xlog_recover_item *item) | |
122 | { | |
123 | /* | |
124 | * Inode allocation buffers must be replayed before subsequent inode | |
125 | * items try to modify those buffers. ICREATE items are the logical | |
126 | * equivalent of logging a newly initialized inode buffer, so recover | |
127 | * these at the same time that we recover logged buffers. | |
128 | */ | |
129 | return XLOG_REORDER_BUFFER_LIST; | |
130 | } | |
131 | ||
3ec6efa7 DW |
132 | /* |
133 | * This routine is called when an inode create format structure is found in a | |
134 | * committed transaction in the log. It's purpose is to initialise the inodes | |
135 | * being allocated on disk. This requires us to get inode cluster buffers that | |
136 | * match the range to be initialised, stamped with inode templates and written | |
137 | * by delayed write so that subsequent modifications will hit the cached buffer | |
138 | * and only need writing out at the end of recovery. | |
139 | */ | |
140 | STATIC int | |
141 | xlog_recover_icreate_commit_pass2( | |
142 | struct xlog *log, | |
143 | struct list_head *buffer_list, | |
144 | struct xlog_recover_item *item, | |
145 | xfs_lsn_t lsn) | |
146 | { | |
147 | struct xfs_mount *mp = log->l_mp; | |
148 | struct xfs_icreate_log *icl; | |
149 | struct xfs_ino_geometry *igeo = M_IGEO(mp); | |
150 | xfs_agnumber_t agno; | |
151 | xfs_agblock_t agbno; | |
152 | unsigned int count; | |
153 | unsigned int isize; | |
154 | xfs_agblock_t length; | |
155 | int bb_per_cluster; | |
156 | int cancel_count; | |
157 | int nbufs; | |
158 | int i; | |
159 | ||
160 | icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr; | |
161 | if (icl->icl_type != XFS_LI_ICREATE) { | |
162 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad type"); | |
163 | return -EINVAL; | |
164 | } | |
165 | ||
166 | if (icl->icl_size != 1) { | |
167 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad icl size"); | |
168 | return -EINVAL; | |
169 | } | |
170 | ||
171 | agno = be32_to_cpu(icl->icl_ag); | |
172 | if (agno >= mp->m_sb.sb_agcount) { | |
173 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agno"); | |
174 | return -EINVAL; | |
175 | } | |
176 | agbno = be32_to_cpu(icl->icl_agbno); | |
177 | if (!agbno || agbno == NULLAGBLOCK || agbno >= mp->m_sb.sb_agblocks) { | |
178 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agbno"); | |
179 | return -EINVAL; | |
180 | } | |
181 | isize = be32_to_cpu(icl->icl_isize); | |
182 | if (isize != mp->m_sb.sb_inodesize) { | |
183 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad isize"); | |
184 | return -EINVAL; | |
185 | } | |
186 | count = be32_to_cpu(icl->icl_count); | |
187 | if (!count) { | |
188 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad count"); | |
189 | return -EINVAL; | |
190 | } | |
191 | length = be32_to_cpu(icl->icl_length); | |
192 | if (!length || length >= mp->m_sb.sb_agblocks) { | |
193 | xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad length"); | |
194 | return -EINVAL; | |
195 | } | |
196 | ||
197 | /* | |
198 | * The inode chunk is either full or sparse and we only support | |
199 | * m_ino_geo.ialloc_min_blks sized sparse allocations at this time. | |
200 | */ | |
201 | if (length != igeo->ialloc_blks && | |
202 | length != igeo->ialloc_min_blks) { | |
203 | xfs_warn(log->l_mp, | |
edf27485 | 204 | "%s: unsupported chunk length", __func__); |
3ec6efa7 DW |
205 | return -EINVAL; |
206 | } | |
207 | ||
208 | /* verify inode count is consistent with extent length */ | |
209 | if ((count >> mp->m_sb.sb_inopblog) != length) { | |
210 | xfs_warn(log->l_mp, | |
211 | "%s: inconsistent inode count and chunk length", | |
edf27485 | 212 | __func__); |
3ec6efa7 DW |
213 | return -EINVAL; |
214 | } | |
215 | ||
216 | /* | |
217 | * The icreate transaction can cover multiple cluster buffers and these | |
218 | * buffers could have been freed and reused. Check the individual | |
219 | * buffers for cancellation so we don't overwrite anything written after | |
220 | * a cancellation. | |
221 | */ | |
222 | bb_per_cluster = XFS_FSB_TO_BB(mp, igeo->blocks_per_cluster); | |
223 | nbufs = length / igeo->blocks_per_cluster; | |
224 | for (i = 0, cancel_count = 0; i < nbufs; i++) { | |
225 | xfs_daddr_t daddr; | |
226 | ||
227 | daddr = XFS_AGB_TO_DADDR(mp, agno, | |
228 | agbno + i * igeo->blocks_per_cluster); | |
229 | if (xlog_is_buffer_cancelled(log, daddr, bb_per_cluster)) | |
230 | cancel_count++; | |
231 | } | |
232 | ||
233 | /* | |
234 | * We currently only use icreate for a single allocation at a time. This | |
235 | * means we should expect either all or none of the buffers to be | |
236 | * cancelled. Be conservative and skip replay if at least one buffer is | |
237 | * cancelled, but warn the user that something is awry if the buffers | |
238 | * are not consistent. | |
239 | * | |
240 | * XXX: This must be refined to only skip cancelled clusters once we use | |
241 | * icreate for multiple chunk allocations. | |
242 | */ | |
243 | ASSERT(!cancel_count || cancel_count == nbufs); | |
244 | if (cancel_count) { | |
245 | if (cancel_count != nbufs) | |
246 | xfs_warn(mp, | |
247 | "WARNING: partial inode chunk cancellation, skipped icreate."); | |
248 | trace_xfs_log_recover_icreate_cancel(log, icl); | |
249 | return 0; | |
250 | } | |
251 | ||
252 | trace_xfs_log_recover_icreate_recover(log, icl); | |
253 | return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno, | |
254 | length, be32_to_cpu(icl->icl_gen)); | |
255 | } | |
256 | ||
86ffa471 DW |
257 | const struct xlog_recover_item_ops xlog_icreate_item_ops = { |
258 | .item_type = XFS_LI_ICREATE, | |
259 | .reorder = xlog_recover_icreate_reorder, | |
3ec6efa7 | 260 | .commit_pass2 = xlog_recover_icreate_commit_pass2, |
86ffa471 | 261 | }; |