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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2002,2005 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" | |
1da177e4 | 23 | #include "xfs_sb.h" |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 LT |
25 | #include "xfs_mount.h" |
26 | #include "xfs_trans_priv.h" | |
1da177e4 | 27 | #include "xfs_bmap_btree.h" |
1da177e4 | 28 | #include "xfs_dinode.h" |
1da177e4 | 29 | #include "xfs_inode.h" |
a844f451 | 30 | #include "xfs_inode_item.h" |
db7a19f2 | 31 | #include "xfs_error.h" |
0b1b213f | 32 | #include "xfs_trace.h" |
1da177e4 LT |
33 | |
34 | ||
35 | kmem_zone_t *xfs_ili_zone; /* inode log item zone */ | |
36 | ||
7bfa31d8 CH |
37 | static inline struct xfs_inode_log_item *INODE_ITEM(struct xfs_log_item *lip) |
38 | { | |
39 | return container_of(lip, struct xfs_inode_log_item, ili_item); | |
40 | } | |
41 | ||
42 | ||
1da177e4 LT |
43 | /* |
44 | * This returns the number of iovecs needed to log the given inode item. | |
45 | * | |
46 | * We need one iovec for the inode log format structure, one for the | |
47 | * inode core, and possibly one for the inode data/extents/b-tree root | |
48 | * and one for the inode attribute data/extents/b-tree root. | |
49 | */ | |
50 | STATIC uint | |
51 | xfs_inode_item_size( | |
7bfa31d8 | 52 | struct xfs_log_item *lip) |
1da177e4 | 53 | { |
7bfa31d8 CH |
54 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); |
55 | struct xfs_inode *ip = iip->ili_inode; | |
56 | uint nvecs = 2; | |
1da177e4 | 57 | |
1da177e4 LT |
58 | switch (ip->i_d.di_format) { |
59 | case XFS_DINODE_FMT_EXTENTS: | |
f5d8d5c4 | 60 | if ((iip->ili_fields & XFS_ILOG_DEXT) && |
339a5f5d CH |
61 | ip->i_d.di_nextents > 0 && |
62 | ip->i_df.if_bytes > 0) | |
1da177e4 | 63 | nvecs++; |
1da177e4 LT |
64 | break; |
65 | ||
66 | case XFS_DINODE_FMT_BTREE: | |
f5d8d5c4 | 67 | if ((iip->ili_fields & XFS_ILOG_DBROOT) && |
339a5f5d | 68 | ip->i_df.if_broot_bytes > 0) |
1da177e4 | 69 | nvecs++; |
1da177e4 LT |
70 | break; |
71 | ||
72 | case XFS_DINODE_FMT_LOCAL: | |
f5d8d5c4 | 73 | if ((iip->ili_fields & XFS_ILOG_DDATA) && |
339a5f5d | 74 | ip->i_df.if_bytes > 0) |
1da177e4 | 75 | nvecs++; |
1da177e4 LT |
76 | break; |
77 | ||
78 | case XFS_DINODE_FMT_DEV: | |
1da177e4 | 79 | case XFS_DINODE_FMT_UUID: |
1da177e4 LT |
80 | break; |
81 | ||
82 | default: | |
83 | ASSERT(0); | |
84 | break; | |
85 | } | |
86 | ||
339a5f5d | 87 | if (!XFS_IFORK_Q(ip)) |
1da177e4 | 88 | return nvecs; |
339a5f5d | 89 | |
1da177e4 LT |
90 | |
91 | /* | |
92 | * Log any necessary attribute data. | |
93 | */ | |
94 | switch (ip->i_d.di_aformat) { | |
95 | case XFS_DINODE_FMT_EXTENTS: | |
f5d8d5c4 | 96 | if ((iip->ili_fields & XFS_ILOG_AEXT) && |
339a5f5d CH |
97 | ip->i_d.di_anextents > 0 && |
98 | ip->i_afp->if_bytes > 0) | |
1da177e4 | 99 | nvecs++; |
1da177e4 LT |
100 | break; |
101 | ||
102 | case XFS_DINODE_FMT_BTREE: | |
f5d8d5c4 | 103 | if ((iip->ili_fields & XFS_ILOG_ABROOT) && |
339a5f5d | 104 | ip->i_afp->if_broot_bytes > 0) |
1da177e4 | 105 | nvecs++; |
1da177e4 LT |
106 | break; |
107 | ||
108 | case XFS_DINODE_FMT_LOCAL: | |
f5d8d5c4 | 109 | if ((iip->ili_fields & XFS_ILOG_ADATA) && |
339a5f5d | 110 | ip->i_afp->if_bytes > 0) |
1da177e4 | 111 | nvecs++; |
1da177e4 LT |
112 | break; |
113 | ||
114 | default: | |
115 | ASSERT(0); | |
116 | break; | |
117 | } | |
118 | ||
119 | return nvecs; | |
120 | } | |
121 | ||
e828776a DC |
122 | /* |
123 | * xfs_inode_item_format_extents - convert in-core extents to on-disk form | |
124 | * | |
125 | * For either the data or attr fork in extent format, we need to endian convert | |
126 | * the in-core extent as we place them into the on-disk inode. In this case, we | |
127 | * need to do this conversion before we write the extents into the log. Because | |
128 | * we don't have the disk inode to write into here, we allocate a buffer and | |
129 | * format the extents into it via xfs_iextents_copy(). We free the buffer in | |
130 | * the unlock routine after the copy for the log has been made. | |
131 | * | |
132 | * In the case of the data fork, the in-core and on-disk fork sizes can be | |
133 | * different due to delayed allocation extents. We only log on-disk extents | |
134 | * here, so always use the physical fork size to determine the size of the | |
135 | * buffer we need to allocate. | |
136 | */ | |
137 | STATIC void | |
138 | xfs_inode_item_format_extents( | |
139 | struct xfs_inode *ip, | |
140 | struct xfs_log_iovec *vecp, | |
141 | int whichfork, | |
142 | int type) | |
143 | { | |
144 | xfs_bmbt_rec_t *ext_buffer; | |
145 | ||
146 | ext_buffer = kmem_alloc(XFS_IFORK_SIZE(ip, whichfork), KM_SLEEP); | |
147 | if (whichfork == XFS_DATA_FORK) | |
148 | ip->i_itemp->ili_extents_buf = ext_buffer; | |
149 | else | |
150 | ip->i_itemp->ili_aextents_buf = ext_buffer; | |
151 | ||
152 | vecp->i_addr = ext_buffer; | |
153 | vecp->i_len = xfs_iextents_copy(ip, ext_buffer, whichfork); | |
154 | vecp->i_type = type; | |
155 | } | |
156 | ||
1da177e4 LT |
157 | /* |
158 | * This is called to fill in the vector of log iovecs for the | |
159 | * given inode log item. It fills the first item with an inode | |
160 | * log format structure, the second with the on-disk inode structure, | |
161 | * and a possible third and/or fourth with the inode data/extents/b-tree | |
162 | * root and inode attributes data/extents/b-tree root. | |
163 | */ | |
164 | STATIC void | |
165 | xfs_inode_item_format( | |
7bfa31d8 CH |
166 | struct xfs_log_item *lip, |
167 | struct xfs_log_iovec *vecp) | |
1da177e4 | 168 | { |
7bfa31d8 CH |
169 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); |
170 | struct xfs_inode *ip = iip->ili_inode; | |
1da177e4 | 171 | uint nvecs; |
1da177e4 | 172 | size_t data_bytes; |
1da177e4 LT |
173 | xfs_mount_t *mp; |
174 | ||
4e0d5f92 | 175 | vecp->i_addr = &iip->ili_format; |
1da177e4 | 176 | vecp->i_len = sizeof(xfs_inode_log_format_t); |
4139b3b3 | 177 | vecp->i_type = XLOG_REG_TYPE_IFORMAT; |
1da177e4 LT |
178 | vecp++; |
179 | nvecs = 1; | |
180 | ||
4e0d5f92 | 181 | vecp->i_addr = &ip->i_d; |
81591fe2 | 182 | vecp->i_len = sizeof(struct xfs_icdinode); |
4139b3b3 | 183 | vecp->i_type = XLOG_REG_TYPE_ICORE; |
1da177e4 LT |
184 | vecp++; |
185 | nvecs++; | |
1da177e4 LT |
186 | |
187 | /* | |
188 | * If this is really an old format inode, then we need to | |
189 | * log it as such. This means that we have to copy the link | |
190 | * count from the new field to the old. We don't have to worry | |
191 | * about the new fields, because nothing trusts them as long as | |
192 | * the old inode version number is there. If the superblock already | |
193 | * has a new version number, then we don't bother converting back. | |
194 | */ | |
195 | mp = ip->i_mount; | |
51ce16d5 CH |
196 | ASSERT(ip->i_d.di_version == 1 || xfs_sb_version_hasnlink(&mp->m_sb)); |
197 | if (ip->i_d.di_version == 1) { | |
62118709 | 198 | if (!xfs_sb_version_hasnlink(&mp->m_sb)) { |
1da177e4 LT |
199 | /* |
200 | * Convert it back. | |
201 | */ | |
202 | ASSERT(ip->i_d.di_nlink <= XFS_MAXLINK_1); | |
203 | ip->i_d.di_onlink = ip->i_d.di_nlink; | |
204 | } else { | |
205 | /* | |
206 | * The superblock version has already been bumped, | |
207 | * so just make the conversion to the new inode | |
208 | * format permanent. | |
209 | */ | |
51ce16d5 | 210 | ip->i_d.di_version = 2; |
1da177e4 LT |
211 | ip->i_d.di_onlink = 0; |
212 | memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad)); | |
213 | } | |
214 | } | |
215 | ||
216 | switch (ip->i_d.di_format) { | |
217 | case XFS_DINODE_FMT_EXTENTS: | |
f5d8d5c4 | 218 | iip->ili_fields &= |
339a5f5d CH |
219 | ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | |
220 | XFS_ILOG_DEV | XFS_ILOG_UUID); | |
221 | ||
f5d8d5c4 | 222 | if ((iip->ili_fields & XFS_ILOG_DEXT) && |
339a5f5d CH |
223 | ip->i_d.di_nextents > 0 && |
224 | ip->i_df.if_bytes > 0) { | |
1da177e4 | 225 | ASSERT(ip->i_df.if_u1.if_extents != NULL); |
339a5f5d | 226 | ASSERT(ip->i_df.if_bytes / sizeof(xfs_bmbt_rec_t) > 0); |
1da177e4 | 227 | ASSERT(iip->ili_extents_buf == NULL); |
339a5f5d | 228 | |
f016bad6 | 229 | #ifdef XFS_NATIVE_HOST |
696123fc DC |
230 | if (ip->i_d.di_nextents == ip->i_df.if_bytes / |
231 | (uint)sizeof(xfs_bmbt_rec_t)) { | |
1da177e4 LT |
232 | /* |
233 | * There are no delayed allocation | |
234 | * extents, so just point to the | |
235 | * real extents array. | |
236 | */ | |
4e0d5f92 | 237 | vecp->i_addr = ip->i_df.if_u1.if_extents; |
1da177e4 | 238 | vecp->i_len = ip->i_df.if_bytes; |
4139b3b3 | 239 | vecp->i_type = XLOG_REG_TYPE_IEXT; |
1da177e4 LT |
240 | } else |
241 | #endif | |
242 | { | |
e828776a DC |
243 | xfs_inode_item_format_extents(ip, vecp, |
244 | XFS_DATA_FORK, XLOG_REG_TYPE_IEXT); | |
1da177e4 LT |
245 | } |
246 | ASSERT(vecp->i_len <= ip->i_df.if_bytes); | |
247 | iip->ili_format.ilf_dsize = vecp->i_len; | |
248 | vecp++; | |
249 | nvecs++; | |
339a5f5d | 250 | } else { |
f5d8d5c4 | 251 | iip->ili_fields &= ~XFS_ILOG_DEXT; |
1da177e4 LT |
252 | } |
253 | break; | |
254 | ||
255 | case XFS_DINODE_FMT_BTREE: | |
f5d8d5c4 | 256 | iip->ili_fields &= |
339a5f5d CH |
257 | ~(XFS_ILOG_DDATA | XFS_ILOG_DEXT | |
258 | XFS_ILOG_DEV | XFS_ILOG_UUID); | |
259 | ||
f5d8d5c4 | 260 | if ((iip->ili_fields & XFS_ILOG_DBROOT) && |
339a5f5d | 261 | ip->i_df.if_broot_bytes > 0) { |
1da177e4 | 262 | ASSERT(ip->i_df.if_broot != NULL); |
4e0d5f92 | 263 | vecp->i_addr = ip->i_df.if_broot; |
1da177e4 | 264 | vecp->i_len = ip->i_df.if_broot_bytes; |
4139b3b3 | 265 | vecp->i_type = XLOG_REG_TYPE_IBROOT; |
1da177e4 LT |
266 | vecp++; |
267 | nvecs++; | |
268 | iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes; | |
339a5f5d | 269 | } else { |
f5d8d5c4 | 270 | ASSERT(!(iip->ili_fields & |
339a5f5d | 271 | XFS_ILOG_DBROOT)); |
f5d8d5c4 | 272 | iip->ili_fields &= ~XFS_ILOG_DBROOT; |
1da177e4 LT |
273 | } |
274 | break; | |
275 | ||
276 | case XFS_DINODE_FMT_LOCAL: | |
f5d8d5c4 | 277 | iip->ili_fields &= |
339a5f5d CH |
278 | ~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT | |
279 | XFS_ILOG_DEV | XFS_ILOG_UUID); | |
f5d8d5c4 | 280 | if ((iip->ili_fields & XFS_ILOG_DDATA) && |
339a5f5d | 281 | ip->i_df.if_bytes > 0) { |
1da177e4 LT |
282 | ASSERT(ip->i_df.if_u1.if_data != NULL); |
283 | ASSERT(ip->i_d.di_size > 0); | |
284 | ||
4e0d5f92 | 285 | vecp->i_addr = ip->i_df.if_u1.if_data; |
1da177e4 LT |
286 | /* |
287 | * Round i_bytes up to a word boundary. | |
288 | * The underlying memory is guaranteed to | |
289 | * to be there by xfs_idata_realloc(). | |
290 | */ | |
291 | data_bytes = roundup(ip->i_df.if_bytes, 4); | |
292 | ASSERT((ip->i_df.if_real_bytes == 0) || | |
293 | (ip->i_df.if_real_bytes == data_bytes)); | |
294 | vecp->i_len = (int)data_bytes; | |
4139b3b3 | 295 | vecp->i_type = XLOG_REG_TYPE_ILOCAL; |
1da177e4 LT |
296 | vecp++; |
297 | nvecs++; | |
298 | iip->ili_format.ilf_dsize = (unsigned)data_bytes; | |
339a5f5d | 299 | } else { |
f5d8d5c4 | 300 | iip->ili_fields &= ~XFS_ILOG_DDATA; |
1da177e4 LT |
301 | } |
302 | break; | |
303 | ||
304 | case XFS_DINODE_FMT_DEV: | |
f5d8d5c4 | 305 | iip->ili_fields &= |
339a5f5d CH |
306 | ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | |
307 | XFS_ILOG_DEXT | XFS_ILOG_UUID); | |
f5d8d5c4 | 308 | if (iip->ili_fields & XFS_ILOG_DEV) { |
1da177e4 LT |
309 | iip->ili_format.ilf_u.ilfu_rdev = |
310 | ip->i_df.if_u2.if_rdev; | |
311 | } | |
312 | break; | |
313 | ||
314 | case XFS_DINODE_FMT_UUID: | |
f5d8d5c4 | 315 | iip->ili_fields &= |
339a5f5d CH |
316 | ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT | |
317 | XFS_ILOG_DEXT | XFS_ILOG_DEV); | |
f5d8d5c4 | 318 | if (iip->ili_fields & XFS_ILOG_UUID) { |
1da177e4 LT |
319 | iip->ili_format.ilf_u.ilfu_uuid = |
320 | ip->i_df.if_u2.if_uuid; | |
321 | } | |
322 | break; | |
323 | ||
324 | default: | |
325 | ASSERT(0); | |
326 | break; | |
327 | } | |
328 | ||
329 | /* | |
339a5f5d | 330 | * If there are no attributes associated with the file, then we're done. |
1da177e4 LT |
331 | */ |
332 | if (!XFS_IFORK_Q(ip)) { | |
f5d8d5c4 | 333 | iip->ili_fields &= |
339a5f5d | 334 | ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT); |
f5d8d5c4 | 335 | goto out; |
1da177e4 LT |
336 | } |
337 | ||
338 | switch (ip->i_d.di_aformat) { | |
339 | case XFS_DINODE_FMT_EXTENTS: | |
f5d8d5c4 | 340 | iip->ili_fields &= |
339a5f5d CH |
341 | ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT); |
342 | ||
f5d8d5c4 | 343 | if ((iip->ili_fields & XFS_ILOG_AEXT) && |
339a5f5d CH |
344 | ip->i_d.di_anextents > 0 && |
345 | ip->i_afp->if_bytes > 0) { | |
346 | ASSERT(ip->i_afp->if_bytes / sizeof(xfs_bmbt_rec_t) == | |
347 | ip->i_d.di_anextents); | |
73523a2e | 348 | ASSERT(ip->i_afp->if_u1.if_extents != NULL); |
f016bad6 | 349 | #ifdef XFS_NATIVE_HOST |
1da177e4 LT |
350 | /* |
351 | * There are not delayed allocation extents | |
352 | * for attributes, so just point at the array. | |
353 | */ | |
4e0d5f92 | 354 | vecp->i_addr = ip->i_afp->if_u1.if_extents; |
1da177e4 | 355 | vecp->i_len = ip->i_afp->if_bytes; |
e828776a | 356 | vecp->i_type = XLOG_REG_TYPE_IATTR_EXT; |
1da177e4 LT |
357 | #else |
358 | ASSERT(iip->ili_aextents_buf == NULL); | |
e828776a DC |
359 | xfs_inode_item_format_extents(ip, vecp, |
360 | XFS_ATTR_FORK, XLOG_REG_TYPE_IATTR_EXT); | |
1da177e4 LT |
361 | #endif |
362 | iip->ili_format.ilf_asize = vecp->i_len; | |
363 | vecp++; | |
364 | nvecs++; | |
339a5f5d | 365 | } else { |
f5d8d5c4 | 366 | iip->ili_fields &= ~XFS_ILOG_AEXT; |
1da177e4 LT |
367 | } |
368 | break; | |
369 | ||
370 | case XFS_DINODE_FMT_BTREE: | |
f5d8d5c4 | 371 | iip->ili_fields &= |
339a5f5d CH |
372 | ~(XFS_ILOG_ADATA | XFS_ILOG_AEXT); |
373 | ||
f5d8d5c4 | 374 | if ((iip->ili_fields & XFS_ILOG_ABROOT) && |
339a5f5d | 375 | ip->i_afp->if_broot_bytes > 0) { |
1da177e4 | 376 | ASSERT(ip->i_afp->if_broot != NULL); |
339a5f5d | 377 | |
4e0d5f92 | 378 | vecp->i_addr = ip->i_afp->if_broot; |
1da177e4 | 379 | vecp->i_len = ip->i_afp->if_broot_bytes; |
4139b3b3 | 380 | vecp->i_type = XLOG_REG_TYPE_IATTR_BROOT; |
1da177e4 LT |
381 | vecp++; |
382 | nvecs++; | |
383 | iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes; | |
339a5f5d | 384 | } else { |
f5d8d5c4 | 385 | iip->ili_fields &= ~XFS_ILOG_ABROOT; |
1da177e4 LT |
386 | } |
387 | break; | |
388 | ||
389 | case XFS_DINODE_FMT_LOCAL: | |
f5d8d5c4 | 390 | iip->ili_fields &= |
339a5f5d CH |
391 | ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT); |
392 | ||
f5d8d5c4 | 393 | if ((iip->ili_fields & XFS_ILOG_ADATA) && |
339a5f5d | 394 | ip->i_afp->if_bytes > 0) { |
1da177e4 LT |
395 | ASSERT(ip->i_afp->if_u1.if_data != NULL); |
396 | ||
4e0d5f92 | 397 | vecp->i_addr = ip->i_afp->if_u1.if_data; |
1da177e4 LT |
398 | /* |
399 | * Round i_bytes up to a word boundary. | |
400 | * The underlying memory is guaranteed to | |
401 | * to be there by xfs_idata_realloc(). | |
402 | */ | |
403 | data_bytes = roundup(ip->i_afp->if_bytes, 4); | |
404 | ASSERT((ip->i_afp->if_real_bytes == 0) || | |
405 | (ip->i_afp->if_real_bytes == data_bytes)); | |
406 | vecp->i_len = (int)data_bytes; | |
4139b3b3 | 407 | vecp->i_type = XLOG_REG_TYPE_IATTR_LOCAL; |
1da177e4 LT |
408 | vecp++; |
409 | nvecs++; | |
410 | iip->ili_format.ilf_asize = (unsigned)data_bytes; | |
339a5f5d | 411 | } else { |
f5d8d5c4 | 412 | iip->ili_fields &= ~XFS_ILOG_ADATA; |
1da177e4 LT |
413 | } |
414 | break; | |
415 | ||
416 | default: | |
417 | ASSERT(0); | |
418 | break; | |
419 | } | |
420 | ||
f5d8d5c4 CH |
421 | out: |
422 | /* | |
423 | * Now update the log format that goes out to disk from the in-core | |
424 | * values. We always write the inode core to make the arithmetic | |
425 | * games in recovery easier, which isn't a big deal as just about any | |
426 | * transaction would dirty it anyway. | |
427 | */ | |
8f639dde CH |
428 | iip->ili_format.ilf_fields = XFS_ILOG_CORE | |
429 | (iip->ili_fields & ~XFS_ILOG_TIMESTAMP); | |
1da177e4 LT |
430 | iip->ili_format.ilf_size = nvecs; |
431 | } | |
432 | ||
433 | ||
434 | /* | |
435 | * This is called to pin the inode associated with the inode log | |
a14a5ab5 | 436 | * item in memory so it cannot be written out. |
1da177e4 LT |
437 | */ |
438 | STATIC void | |
439 | xfs_inode_item_pin( | |
7bfa31d8 | 440 | struct xfs_log_item *lip) |
1da177e4 | 441 | { |
7bfa31d8 | 442 | struct xfs_inode *ip = INODE_ITEM(lip)->ili_inode; |
a14a5ab5 | 443 | |
7bfa31d8 CH |
444 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
445 | ||
446 | trace_xfs_inode_pin(ip, _RET_IP_); | |
447 | atomic_inc(&ip->i_pincount); | |
1da177e4 LT |
448 | } |
449 | ||
450 | ||
451 | /* | |
452 | * This is called to unpin the inode associated with the inode log | |
453 | * item which was previously pinned with a call to xfs_inode_item_pin(). | |
a14a5ab5 CH |
454 | * |
455 | * Also wake up anyone in xfs_iunpin_wait() if the count goes to 0. | |
1da177e4 | 456 | */ |
1da177e4 LT |
457 | STATIC void |
458 | xfs_inode_item_unpin( | |
7bfa31d8 | 459 | struct xfs_log_item *lip, |
9412e318 | 460 | int remove) |
1da177e4 | 461 | { |
7bfa31d8 | 462 | struct xfs_inode *ip = INODE_ITEM(lip)->ili_inode; |
a14a5ab5 | 463 | |
4aaf15d1 | 464 | trace_xfs_inode_unpin(ip, _RET_IP_); |
a14a5ab5 CH |
465 | ASSERT(atomic_read(&ip->i_pincount) > 0); |
466 | if (atomic_dec_and_test(&ip->i_pincount)) | |
f392e631 | 467 | wake_up_bit(&ip->i_flags, __XFS_IPINNED_BIT); |
1da177e4 LT |
468 | } |
469 | ||
1da177e4 | 470 | STATIC uint |
43ff2122 CH |
471 | xfs_inode_item_push( |
472 | struct xfs_log_item *lip, | |
473 | struct list_head *buffer_list) | |
1da177e4 | 474 | { |
7bfa31d8 CH |
475 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); |
476 | struct xfs_inode *ip = iip->ili_inode; | |
43ff2122 CH |
477 | struct xfs_buf *bp = NULL; |
478 | uint rval = XFS_ITEM_SUCCESS; | |
479 | int error; | |
1da177e4 | 480 | |
7bfa31d8 | 481 | if (xfs_ipincount(ip) > 0) |
1da177e4 | 482 | return XFS_ITEM_PINNED; |
1da177e4 | 483 | |
7bfa31d8 | 484 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
1da177e4 | 485 | return XFS_ITEM_LOCKED; |
1da177e4 | 486 | |
4c46819a CH |
487 | /* |
488 | * Re-check the pincount now that we stabilized the value by | |
489 | * taking the ilock. | |
490 | */ | |
491 | if (xfs_ipincount(ip) > 0) { | |
43ff2122 CH |
492 | rval = XFS_ITEM_PINNED; |
493 | goto out_unlock; | |
4c46819a CH |
494 | } |
495 | ||
9a3a5dab BF |
496 | /* |
497 | * Stale inode items should force out the iclog. | |
498 | */ | |
499 | if (ip->i_flags & XFS_ISTALE) { | |
500 | rval = XFS_ITEM_PINNED; | |
501 | goto out_unlock; | |
502 | } | |
503 | ||
43ff2122 CH |
504 | /* |
505 | * Someone else is already flushing the inode. Nothing we can do | |
506 | * here but wait for the flush to finish and remove the item from | |
507 | * the AIL. | |
508 | */ | |
1da177e4 | 509 | if (!xfs_iflock_nowait(ip)) { |
43ff2122 CH |
510 | rval = XFS_ITEM_FLUSHING; |
511 | goto out_unlock; | |
1da177e4 LT |
512 | } |
513 | ||
43ff2122 CH |
514 | ASSERT(iip->ili_fields != 0 || XFS_FORCED_SHUTDOWN(ip->i_mount)); |
515 | ASSERT(iip->ili_logged == 0 || XFS_FORCED_SHUTDOWN(ip->i_mount)); | |
516 | ||
517 | spin_unlock(&lip->li_ailp->xa_lock); | |
518 | ||
519 | error = xfs_iflush(ip, &bp); | |
520 | if (!error) { | |
521 | if (!xfs_buf_delwri_queue(bp, buffer_list)) | |
522 | rval = XFS_ITEM_FLUSHING; | |
523 | xfs_buf_relse(bp); | |
1da177e4 | 524 | } |
43ff2122 CH |
525 | |
526 | spin_lock(&lip->li_ailp->xa_lock); | |
527 | out_unlock: | |
528 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
529 | return rval; | |
1da177e4 LT |
530 | } |
531 | ||
532 | /* | |
533 | * Unlock the inode associated with the inode log item. | |
534 | * Clear the fields of the inode and inode log item that | |
535 | * are specific to the current transaction. If the | |
536 | * hold flags is set, do not unlock the inode. | |
537 | */ | |
538 | STATIC void | |
539 | xfs_inode_item_unlock( | |
7bfa31d8 | 540 | struct xfs_log_item *lip) |
1da177e4 | 541 | { |
7bfa31d8 CH |
542 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); |
543 | struct xfs_inode *ip = iip->ili_inode; | |
898621d5 | 544 | unsigned short lock_flags; |
1da177e4 | 545 | |
f3ca8738 CH |
546 | ASSERT(ip->i_itemp != NULL); |
547 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
1da177e4 LT |
548 | |
549 | /* | |
550 | * If the inode needed a separate buffer with which to log | |
551 | * its extents, then free it now. | |
552 | */ | |
553 | if (iip->ili_extents_buf != NULL) { | |
554 | ASSERT(ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS); | |
555 | ASSERT(ip->i_d.di_nextents > 0); | |
f5d8d5c4 | 556 | ASSERT(iip->ili_fields & XFS_ILOG_DEXT); |
1da177e4 | 557 | ASSERT(ip->i_df.if_bytes > 0); |
f0e2d93c | 558 | kmem_free(iip->ili_extents_buf); |
1da177e4 LT |
559 | iip->ili_extents_buf = NULL; |
560 | } | |
561 | if (iip->ili_aextents_buf != NULL) { | |
562 | ASSERT(ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS); | |
563 | ASSERT(ip->i_d.di_anextents > 0); | |
f5d8d5c4 | 564 | ASSERT(iip->ili_fields & XFS_ILOG_AEXT); |
1da177e4 | 565 | ASSERT(ip->i_afp->if_bytes > 0); |
f0e2d93c | 566 | kmem_free(iip->ili_aextents_buf); |
1da177e4 LT |
567 | iip->ili_aextents_buf = NULL; |
568 | } | |
569 | ||
898621d5 CH |
570 | lock_flags = iip->ili_lock_flags; |
571 | iip->ili_lock_flags = 0; | |
ddc3415a | 572 | if (lock_flags) |
f3ca8738 | 573 | xfs_iunlock(ip, lock_flags); |
1da177e4 LT |
574 | } |
575 | ||
576 | /* | |
de25c181 DC |
577 | * This is called to find out where the oldest active copy of the inode log |
578 | * item in the on disk log resides now that the last log write of it completed | |
579 | * at the given lsn. Since we always re-log all dirty data in an inode, the | |
580 | * latest copy in the on disk log is the only one that matters. Therefore, | |
581 | * simply return the given lsn. | |
582 | * | |
583 | * If the inode has been marked stale because the cluster is being freed, we | |
584 | * don't want to (re-)insert this inode into the AIL. There is a race condition | |
585 | * where the cluster buffer may be unpinned before the inode is inserted into | |
586 | * the AIL during transaction committed processing. If the buffer is unpinned | |
587 | * before the inode item has been committed and inserted, then it is possible | |
1316d4da | 588 | * for the buffer to be written and IO completes before the inode is inserted |
de25c181 DC |
589 | * into the AIL. In that case, we'd be inserting a clean, stale inode into the |
590 | * AIL which will never get removed. It will, however, get reclaimed which | |
591 | * triggers an assert in xfs_inode_free() complaining about freein an inode | |
592 | * still in the AIL. | |
593 | * | |
1316d4da DC |
594 | * To avoid this, just unpin the inode directly and return a LSN of -1 so the |
595 | * transaction committed code knows that it does not need to do any further | |
596 | * processing on the item. | |
1da177e4 | 597 | */ |
1da177e4 LT |
598 | STATIC xfs_lsn_t |
599 | xfs_inode_item_committed( | |
7bfa31d8 | 600 | struct xfs_log_item *lip, |
1da177e4 LT |
601 | xfs_lsn_t lsn) |
602 | { | |
de25c181 DC |
603 | struct xfs_inode_log_item *iip = INODE_ITEM(lip); |
604 | struct xfs_inode *ip = iip->ili_inode; | |
605 | ||
1316d4da DC |
606 | if (xfs_iflags_test(ip, XFS_ISTALE)) { |
607 | xfs_inode_item_unpin(lip, 0); | |
608 | return -1; | |
609 | } | |
7bfa31d8 | 610 | return lsn; |
1da177e4 LT |
611 | } |
612 | ||
1da177e4 LT |
613 | /* |
614 | * XXX rcc - this one really has to do something. Probably needs | |
615 | * to stamp in a new field in the incore inode. | |
616 | */ | |
1da177e4 LT |
617 | STATIC void |
618 | xfs_inode_item_committing( | |
7bfa31d8 | 619 | struct xfs_log_item *lip, |
1da177e4 LT |
620 | xfs_lsn_t lsn) |
621 | { | |
7bfa31d8 | 622 | INODE_ITEM(lip)->ili_last_lsn = lsn; |
1da177e4 LT |
623 | } |
624 | ||
625 | /* | |
626 | * This is the ops vector shared by all buf log items. | |
627 | */ | |
272e42b2 | 628 | static const struct xfs_item_ops xfs_inode_item_ops = { |
7bfa31d8 CH |
629 | .iop_size = xfs_inode_item_size, |
630 | .iop_format = xfs_inode_item_format, | |
631 | .iop_pin = xfs_inode_item_pin, | |
632 | .iop_unpin = xfs_inode_item_unpin, | |
7bfa31d8 CH |
633 | .iop_unlock = xfs_inode_item_unlock, |
634 | .iop_committed = xfs_inode_item_committed, | |
635 | .iop_push = xfs_inode_item_push, | |
7bfa31d8 | 636 | .iop_committing = xfs_inode_item_committing |
1da177e4 LT |
637 | }; |
638 | ||
639 | ||
640 | /* | |
641 | * Initialize the inode log item for a newly allocated (in-core) inode. | |
642 | */ | |
643 | void | |
644 | xfs_inode_item_init( | |
7bfa31d8 CH |
645 | struct xfs_inode *ip, |
646 | struct xfs_mount *mp) | |
1da177e4 | 647 | { |
7bfa31d8 | 648 | struct xfs_inode_log_item *iip; |
1da177e4 LT |
649 | |
650 | ASSERT(ip->i_itemp == NULL); | |
651 | iip = ip->i_itemp = kmem_zone_zalloc(xfs_ili_zone, KM_SLEEP); | |
652 | ||
1da177e4 | 653 | iip->ili_inode = ip; |
43f5efc5 DC |
654 | xfs_log_item_init(mp, &iip->ili_item, XFS_LI_INODE, |
655 | &xfs_inode_item_ops); | |
1da177e4 LT |
656 | iip->ili_format.ilf_type = XFS_LI_INODE; |
657 | iip->ili_format.ilf_ino = ip->i_ino; | |
92bfc6e7 CH |
658 | iip->ili_format.ilf_blkno = ip->i_imap.im_blkno; |
659 | iip->ili_format.ilf_len = ip->i_imap.im_len; | |
660 | iip->ili_format.ilf_boffset = ip->i_imap.im_boffset; | |
1da177e4 LT |
661 | } |
662 | ||
663 | /* | |
664 | * Free the inode log item and any memory hanging off of it. | |
665 | */ | |
666 | void | |
667 | xfs_inode_item_destroy( | |
668 | xfs_inode_t *ip) | |
669 | { | |
1da177e4 LT |
670 | kmem_zone_free(xfs_ili_zone, ip->i_itemp); |
671 | } | |
672 | ||
673 | ||
674 | /* | |
675 | * This is the inode flushing I/O completion routine. It is called | |
676 | * from interrupt level when the buffer containing the inode is | |
677 | * flushed to disk. It is responsible for removing the inode item | |
678 | * from the AIL if it has not been re-logged, and unlocking the inode's | |
679 | * flush lock. | |
30136832 DC |
680 | * |
681 | * To reduce AIL lock traffic as much as possible, we scan the buffer log item | |
682 | * list for other inodes that will run this function. We remove them from the | |
683 | * buffer list so we can process all the inode IO completions in one AIL lock | |
684 | * traversal. | |
1da177e4 | 685 | */ |
1da177e4 LT |
686 | void |
687 | xfs_iflush_done( | |
ca30b2a7 CH |
688 | struct xfs_buf *bp, |
689 | struct xfs_log_item *lip) | |
1da177e4 | 690 | { |
30136832 DC |
691 | struct xfs_inode_log_item *iip; |
692 | struct xfs_log_item *blip; | |
693 | struct xfs_log_item *next; | |
694 | struct xfs_log_item *prev; | |
ca30b2a7 | 695 | struct xfs_ail *ailp = lip->li_ailp; |
30136832 DC |
696 | int need_ail = 0; |
697 | ||
698 | /* | |
699 | * Scan the buffer IO completions for other inodes being completed and | |
700 | * attach them to the current inode log item. | |
701 | */ | |
adadbeef | 702 | blip = bp->b_fspriv; |
30136832 DC |
703 | prev = NULL; |
704 | while (blip != NULL) { | |
705 | if (lip->li_cb != xfs_iflush_done) { | |
706 | prev = blip; | |
707 | blip = blip->li_bio_list; | |
708 | continue; | |
709 | } | |
710 | ||
711 | /* remove from list */ | |
712 | next = blip->li_bio_list; | |
713 | if (!prev) { | |
adadbeef | 714 | bp->b_fspriv = next; |
30136832 DC |
715 | } else { |
716 | prev->li_bio_list = next; | |
717 | } | |
718 | ||
719 | /* add to current list */ | |
720 | blip->li_bio_list = lip->li_bio_list; | |
721 | lip->li_bio_list = blip; | |
722 | ||
723 | /* | |
724 | * while we have the item, do the unlocked check for needing | |
725 | * the AIL lock. | |
726 | */ | |
727 | iip = INODE_ITEM(blip); | |
728 | if (iip->ili_logged && blip->li_lsn == iip->ili_flush_lsn) | |
729 | need_ail++; | |
730 | ||
731 | blip = next; | |
732 | } | |
733 | ||
734 | /* make sure we capture the state of the initial inode. */ | |
735 | iip = INODE_ITEM(lip); | |
736 | if (iip->ili_logged && lip->li_lsn == iip->ili_flush_lsn) | |
737 | need_ail++; | |
1da177e4 LT |
738 | |
739 | /* | |
740 | * We only want to pull the item from the AIL if it is | |
741 | * actually there and its location in the log has not | |
742 | * changed since we started the flush. Thus, we only bother | |
743 | * if the ili_logged flag is set and the inode's lsn has not | |
744 | * changed. First we check the lsn outside | |
745 | * the lock since it's cheaper, and then we recheck while | |
746 | * holding the lock before removing the inode from the AIL. | |
747 | */ | |
30136832 DC |
748 | if (need_ail) { |
749 | struct xfs_log_item *log_items[need_ail]; | |
750 | int i = 0; | |
783a2f65 | 751 | spin_lock(&ailp->xa_lock); |
30136832 DC |
752 | for (blip = lip; blip; blip = blip->li_bio_list) { |
753 | iip = INODE_ITEM(blip); | |
754 | if (iip->ili_logged && | |
755 | blip->li_lsn == iip->ili_flush_lsn) { | |
756 | log_items[i++] = blip; | |
757 | } | |
758 | ASSERT(i <= need_ail); | |
1da177e4 | 759 | } |
30136832 | 760 | /* xfs_trans_ail_delete_bulk() drops the AIL lock. */ |
04913fdd DC |
761 | xfs_trans_ail_delete_bulk(ailp, log_items, i, |
762 | SHUTDOWN_CORRUPT_INCORE); | |
1da177e4 LT |
763 | } |
764 | ||
1da177e4 LT |
765 | |
766 | /* | |
30136832 DC |
767 | * clean up and unlock the flush lock now we are done. We can clear the |
768 | * ili_last_fields bits now that we know that the data corresponding to | |
769 | * them is safely on disk. | |
1da177e4 | 770 | */ |
30136832 DC |
771 | for (blip = lip; blip; blip = next) { |
772 | next = blip->li_bio_list; | |
773 | blip->li_bio_list = NULL; | |
774 | ||
775 | iip = INODE_ITEM(blip); | |
776 | iip->ili_logged = 0; | |
777 | iip->ili_last_fields = 0; | |
778 | xfs_ifunlock(iip->ili_inode); | |
779 | } | |
1da177e4 LT |
780 | } |
781 | ||
782 | /* | |
04913fdd DC |
783 | * This is the inode flushing abort routine. It is called from xfs_iflush when |
784 | * the filesystem is shutting down to clean up the inode state. It is | |
785 | * responsible for removing the inode item from the AIL if it has not been | |
786 | * re-logged, and unlocking the inode's flush lock. | |
1da177e4 LT |
787 | */ |
788 | void | |
789 | xfs_iflush_abort( | |
04913fdd DC |
790 | xfs_inode_t *ip, |
791 | bool stale) | |
1da177e4 | 792 | { |
783a2f65 | 793 | xfs_inode_log_item_t *iip = ip->i_itemp; |
1da177e4 | 794 | |
1da177e4 | 795 | if (iip) { |
783a2f65 | 796 | struct xfs_ail *ailp = iip->ili_item.li_ailp; |
1da177e4 | 797 | if (iip->ili_item.li_flags & XFS_LI_IN_AIL) { |
783a2f65 | 798 | spin_lock(&ailp->xa_lock); |
1da177e4 | 799 | if (iip->ili_item.li_flags & XFS_LI_IN_AIL) { |
783a2f65 | 800 | /* xfs_trans_ail_delete() drops the AIL lock. */ |
04913fdd DC |
801 | xfs_trans_ail_delete(ailp, &iip->ili_item, |
802 | stale ? | |
803 | SHUTDOWN_LOG_IO_ERROR : | |
804 | SHUTDOWN_CORRUPT_INCORE); | |
1da177e4 | 805 | } else |
783a2f65 | 806 | spin_unlock(&ailp->xa_lock); |
1da177e4 LT |
807 | } |
808 | iip->ili_logged = 0; | |
809 | /* | |
810 | * Clear the ili_last_fields bits now that we know that the | |
811 | * data corresponding to them is safely on disk. | |
812 | */ | |
813 | iip->ili_last_fields = 0; | |
814 | /* | |
815 | * Clear the inode logging fields so no more flushes are | |
816 | * attempted. | |
817 | */ | |
f5d8d5c4 | 818 | iip->ili_fields = 0; |
1da177e4 LT |
819 | } |
820 | /* | |
821 | * Release the inode's flush lock since we're done with it. | |
822 | */ | |
823 | xfs_ifunlock(ip); | |
824 | } | |
825 | ||
826 | void | |
827 | xfs_istale_done( | |
ca30b2a7 CH |
828 | struct xfs_buf *bp, |
829 | struct xfs_log_item *lip) | |
1da177e4 | 830 | { |
04913fdd | 831 | xfs_iflush_abort(INODE_ITEM(lip)->ili_inode, true); |
1da177e4 | 832 | } |
6d192a9b TS |
833 | |
834 | /* | |
835 | * convert an xfs_inode_log_format struct from either 32 or 64 bit versions | |
836 | * (which can have different field alignments) to the native version | |
837 | */ | |
838 | int | |
839 | xfs_inode_item_format_convert( | |
840 | xfs_log_iovec_t *buf, | |
841 | xfs_inode_log_format_t *in_f) | |
842 | { | |
843 | if (buf->i_len == sizeof(xfs_inode_log_format_32_t)) { | |
4e0d5f92 | 844 | xfs_inode_log_format_32_t *in_f32 = buf->i_addr; |
6d192a9b | 845 | |
6d192a9b TS |
846 | in_f->ilf_type = in_f32->ilf_type; |
847 | in_f->ilf_size = in_f32->ilf_size; | |
848 | in_f->ilf_fields = in_f32->ilf_fields; | |
849 | in_f->ilf_asize = in_f32->ilf_asize; | |
850 | in_f->ilf_dsize = in_f32->ilf_dsize; | |
851 | in_f->ilf_ino = in_f32->ilf_ino; | |
852 | /* copy biggest field of ilf_u */ | |
853 | memcpy(in_f->ilf_u.ilfu_uuid.__u_bits, | |
854 | in_f32->ilf_u.ilfu_uuid.__u_bits, | |
855 | sizeof(uuid_t)); | |
856 | in_f->ilf_blkno = in_f32->ilf_blkno; | |
857 | in_f->ilf_len = in_f32->ilf_len; | |
858 | in_f->ilf_boffset = in_f32->ilf_boffset; | |
859 | return 0; | |
860 | } else if (buf->i_len == sizeof(xfs_inode_log_format_64_t)){ | |
4e0d5f92 | 861 | xfs_inode_log_format_64_t *in_f64 = buf->i_addr; |
6d192a9b | 862 | |
6d192a9b TS |
863 | in_f->ilf_type = in_f64->ilf_type; |
864 | in_f->ilf_size = in_f64->ilf_size; | |
865 | in_f->ilf_fields = in_f64->ilf_fields; | |
866 | in_f->ilf_asize = in_f64->ilf_asize; | |
867 | in_f->ilf_dsize = in_f64->ilf_dsize; | |
868 | in_f->ilf_ino = in_f64->ilf_ino; | |
869 | /* copy biggest field of ilf_u */ | |
870 | memcpy(in_f->ilf_u.ilfu_uuid.__u_bits, | |
871 | in_f64->ilf_u.ilfu_uuid.__u_bits, | |
872 | sizeof(uuid_t)); | |
873 | in_f->ilf_blkno = in_f64->ilf_blkno; | |
874 | in_f->ilf_len = in_f64->ilf_len; | |
875 | in_f->ilf_boffset = in_f64->ilf_boffset; | |
876 | return 0; | |
877 | } | |
878 | return EFSCORRUPTED; | |
879 | } |