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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 | 6 | #include "xfs.h" |
a844f451 | 7 | #include "xfs_fs.h" |
4fb6e8ad | 8 | #include "xfs_format.h" |
239880ef DC |
9 | #include "xfs_log_format.h" |
10 | #include "xfs_trans_resv.h" | |
dc42375d | 11 | #include "xfs_bit.h" |
1da177e4 | 12 | #include "xfs_mount.h" |
239880ef | 13 | #include "xfs_trans.h" |
1da177e4 | 14 | #include "xfs_trans_priv.h" |
239880ef | 15 | #include "xfs_buf_item.h" |
1da177e4 | 16 | #include "xfs_extfree_item.h" |
1234351c | 17 | #include "xfs_log.h" |
340785cc DW |
18 | #include "xfs_btree.h" |
19 | #include "xfs_rmap.h" | |
1da177e4 LT |
20 | |
21 | ||
22 | kmem_zone_t *xfs_efi_zone; | |
23 | kmem_zone_t *xfs_efd_zone; | |
24 | ||
7bfa31d8 CH |
25 | static inline struct xfs_efi_log_item *EFI_ITEM(struct xfs_log_item *lip) |
26 | { | |
27 | return container_of(lip, struct xfs_efi_log_item, efi_item); | |
28 | } | |
1da177e4 | 29 | |
7d795ca3 | 30 | void |
7bfa31d8 CH |
31 | xfs_efi_item_free( |
32 | struct xfs_efi_log_item *efip) | |
7d795ca3 | 33 | { |
b1c5ebb2 | 34 | kmem_free(efip->efi_item.li_lv_shadow); |
7bfa31d8 | 35 | if (efip->efi_format.efi_nextents > XFS_EFI_MAX_FAST_EXTENTS) |
f0e2d93c | 36 | kmem_free(efip); |
7bfa31d8 | 37 | else |
7d795ca3 | 38 | kmem_zone_free(xfs_efi_zone, efip); |
7d795ca3 | 39 | } |
1da177e4 | 40 | |
0612d116 DC |
41 | /* |
42 | * Freeing the efi requires that we remove it from the AIL if it has already | |
43 | * been placed there. However, the EFI may not yet have been placed in the AIL | |
44 | * when called by xfs_efi_release() from EFD processing due to the ordering of | |
45 | * committed vs unpin operations in bulk insert operations. Hence the reference | |
46 | * count to ensure only the last caller frees the EFI. | |
47 | */ | |
48 | void | |
49 | xfs_efi_release( | |
50 | struct xfs_efi_log_item *efip) | |
51 | { | |
52 | ASSERT(atomic_read(&efip->efi_refcount) > 0); | |
53 | if (atomic_dec_and_test(&efip->efi_refcount)) { | |
54 | xfs_trans_ail_remove(&efip->efi_item, SHUTDOWN_LOG_IO_ERROR); | |
55 | xfs_efi_item_free(efip); | |
56 | } | |
57 | } | |
58 | ||
1da177e4 LT |
59 | /* |
60 | * This returns the number of iovecs needed to log the given efi item. | |
61 | * We only need 1 iovec for an efi item. It just logs the efi_log_format | |
62 | * structure. | |
63 | */ | |
166d1368 DC |
64 | static inline int |
65 | xfs_efi_item_sizeof( | |
66 | struct xfs_efi_log_item *efip) | |
67 | { | |
68 | return sizeof(struct xfs_efi_log_format) + | |
69 | (efip->efi_format.efi_nextents - 1) * sizeof(xfs_extent_t); | |
70 | } | |
71 | ||
72 | STATIC void | |
7bfa31d8 | 73 | xfs_efi_item_size( |
166d1368 DC |
74 | struct xfs_log_item *lip, |
75 | int *nvecs, | |
76 | int *nbytes) | |
1da177e4 | 77 | { |
166d1368 DC |
78 | *nvecs += 1; |
79 | *nbytes += xfs_efi_item_sizeof(EFI_ITEM(lip)); | |
1da177e4 LT |
80 | } |
81 | ||
82 | /* | |
83 | * This is called to fill in the vector of log iovecs for the | |
84 | * given efi log item. We use only 1 iovec, and we point that | |
85 | * at the efi_log_format structure embedded in the efi item. | |
86 | * It is at this point that we assert that all of the extent | |
87 | * slots in the efi item have been filled. | |
88 | */ | |
89 | STATIC void | |
7bfa31d8 CH |
90 | xfs_efi_item_format( |
91 | struct xfs_log_item *lip, | |
bde7cff6 | 92 | struct xfs_log_vec *lv) |
1da177e4 | 93 | { |
7bfa31d8 | 94 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
bde7cff6 | 95 | struct xfs_log_iovec *vecp = NULL; |
1da177e4 | 96 | |
b199c8a4 DC |
97 | ASSERT(atomic_read(&efip->efi_next_extent) == |
98 | efip->efi_format.efi_nextents); | |
1da177e4 LT |
99 | |
100 | efip->efi_format.efi_type = XFS_LI_EFI; | |
1da177e4 LT |
101 | efip->efi_format.efi_size = 1; |
102 | ||
bde7cff6 | 103 | xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFI_FORMAT, |
1234351c CH |
104 | &efip->efi_format, |
105 | xfs_efi_item_sizeof(efip)); | |
1da177e4 LT |
106 | } |
107 | ||
108 | ||
109 | /* | |
110 | * Pinning has no meaning for an efi item, so just return. | |
111 | */ | |
1da177e4 | 112 | STATIC void |
7bfa31d8 CH |
113 | xfs_efi_item_pin( |
114 | struct xfs_log_item *lip) | |
1da177e4 | 115 | { |
1da177e4 LT |
116 | } |
117 | ||
1da177e4 | 118 | /* |
8d99fe92 BF |
119 | * The unpin operation is the last place an EFI is manipulated in the log. It is |
120 | * either inserted in the AIL or aborted in the event of a log I/O error. In | |
121 | * either case, the EFI transaction has been successfully committed to make it | |
122 | * this far. Therefore, we expect whoever committed the EFI to either construct | |
123 | * and commit the EFD or drop the EFD's reference in the event of error. Simply | |
124 | * drop the log's EFI reference now that the log is done with it. | |
1da177e4 | 125 | */ |
1da177e4 | 126 | STATIC void |
7bfa31d8 CH |
127 | xfs_efi_item_unpin( |
128 | struct xfs_log_item *lip, | |
129 | int remove) | |
1da177e4 | 130 | { |
7bfa31d8 | 131 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
5e4b5386 | 132 | xfs_efi_release(efip); |
1da177e4 LT |
133 | } |
134 | ||
135 | /* | |
43ff2122 CH |
136 | * Efi items have no locking or pushing. However, since EFIs are pulled from |
137 | * the AIL when their corresponding EFDs are committed to disk, their situation | |
138 | * is very similar to being pinned. Return XFS_ITEM_PINNED so that the caller | |
139 | * will eventually flush the log. This should help in getting the EFI out of | |
140 | * the AIL. | |
1da177e4 | 141 | */ |
1da177e4 | 142 | STATIC uint |
43ff2122 CH |
143 | xfs_efi_item_push( |
144 | struct xfs_log_item *lip, | |
145 | struct list_head *buffer_list) | |
1da177e4 LT |
146 | { |
147 | return XFS_ITEM_PINNED; | |
148 | } | |
149 | ||
8d99fe92 BF |
150 | /* |
151 | * The EFI has been either committed or aborted if the transaction has been | |
152 | * cancelled. If the transaction was cancelled, an EFD isn't going to be | |
153 | * constructed and thus we free the EFI here directly. | |
154 | */ | |
1da177e4 | 155 | STATIC void |
7bfa31d8 CH |
156 | xfs_efi_item_unlock( |
157 | struct xfs_log_item *lip) | |
1da177e4 | 158 | { |
22525c17 | 159 | if (test_bit(XFS_LI_ABORTED, &lip->li_flags)) |
0612d116 | 160 | xfs_efi_release(EFI_ITEM(lip)); |
1da177e4 LT |
161 | } |
162 | ||
163 | /* | |
b199c8a4 | 164 | * The EFI is logged only once and cannot be moved in the log, so simply return |
666d644c | 165 | * the lsn at which it's been logged. |
1da177e4 | 166 | */ |
1da177e4 | 167 | STATIC xfs_lsn_t |
7bfa31d8 CH |
168 | xfs_efi_item_committed( |
169 | struct xfs_log_item *lip, | |
170 | xfs_lsn_t lsn) | |
1da177e4 LT |
171 | { |
172 | return lsn; | |
173 | } | |
174 | ||
1da177e4 LT |
175 | /* |
176 | * The EFI dependency tracking op doesn't do squat. It can't because | |
177 | * it doesn't know where the free extent is coming from. The dependency | |
178 | * tracking has to be handled by the "enclosing" metadata object. For | |
179 | * example, for inodes, the inode is locked throughout the extent freeing | |
180 | * so the dependency should be recorded there. | |
181 | */ | |
1da177e4 | 182 | STATIC void |
7bfa31d8 CH |
183 | xfs_efi_item_committing( |
184 | struct xfs_log_item *lip, | |
185 | xfs_lsn_t lsn) | |
1da177e4 | 186 | { |
1da177e4 LT |
187 | } |
188 | ||
189 | /* | |
190 | * This is the ops vector shared by all efi log items. | |
191 | */ | |
272e42b2 | 192 | static const struct xfs_item_ops xfs_efi_item_ops = { |
7bfa31d8 CH |
193 | .iop_size = xfs_efi_item_size, |
194 | .iop_format = xfs_efi_item_format, | |
195 | .iop_pin = xfs_efi_item_pin, | |
196 | .iop_unpin = xfs_efi_item_unpin, | |
7bfa31d8 CH |
197 | .iop_unlock = xfs_efi_item_unlock, |
198 | .iop_committed = xfs_efi_item_committed, | |
199 | .iop_push = xfs_efi_item_push, | |
200 | .iop_committing = xfs_efi_item_committing | |
1da177e4 LT |
201 | }; |
202 | ||
203 | ||
204 | /* | |
205 | * Allocate and initialize an efi item with the given number of extents. | |
206 | */ | |
7bfa31d8 CH |
207 | struct xfs_efi_log_item * |
208 | xfs_efi_init( | |
209 | struct xfs_mount *mp, | |
210 | uint nextents) | |
1da177e4 LT |
211 | |
212 | { | |
7bfa31d8 | 213 | struct xfs_efi_log_item *efip; |
1da177e4 LT |
214 | uint size; |
215 | ||
216 | ASSERT(nextents > 0); | |
217 | if (nextents > XFS_EFI_MAX_FAST_EXTENTS) { | |
218 | size = (uint)(sizeof(xfs_efi_log_item_t) + | |
219 | ((nextents - 1) * sizeof(xfs_extent_t))); | |
7bfa31d8 | 220 | efip = kmem_zalloc(size, KM_SLEEP); |
1da177e4 | 221 | } else { |
7bfa31d8 | 222 | efip = kmem_zone_zalloc(xfs_efi_zone, KM_SLEEP); |
1da177e4 LT |
223 | } |
224 | ||
43f5efc5 | 225 | xfs_log_item_init(mp, &efip->efi_item, XFS_LI_EFI, &xfs_efi_item_ops); |
1da177e4 | 226 | efip->efi_format.efi_nextents = nextents; |
db9d67d6 | 227 | efip->efi_format.efi_id = (uintptr_t)(void *)efip; |
b199c8a4 | 228 | atomic_set(&efip->efi_next_extent, 0); |
666d644c | 229 | atomic_set(&efip->efi_refcount, 2); |
1da177e4 | 230 | |
7bfa31d8 | 231 | return efip; |
1da177e4 LT |
232 | } |
233 | ||
6d192a9b TS |
234 | /* |
235 | * Copy an EFI format buffer from the given buf, and into the destination | |
236 | * EFI format structure. | |
237 | * The given buffer can be in 32 bit or 64 bit form (which has different padding), | |
238 | * one of which will be the native format for this kernel. | |
239 | * It will handle the conversion of formats if necessary. | |
240 | */ | |
241 | int | |
242 | xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt) | |
243 | { | |
4e0d5f92 | 244 | xfs_efi_log_format_t *src_efi_fmt = buf->i_addr; |
6d192a9b TS |
245 | uint i; |
246 | uint len = sizeof(xfs_efi_log_format_t) + | |
247 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_t); | |
248 | uint len32 = sizeof(xfs_efi_log_format_32_t) + | |
249 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_32_t); | |
250 | uint len64 = sizeof(xfs_efi_log_format_64_t) + | |
251 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_64_t); | |
252 | ||
253 | if (buf->i_len == len) { | |
254 | memcpy((char *)dst_efi_fmt, (char*)src_efi_fmt, len); | |
255 | return 0; | |
256 | } else if (buf->i_len == len32) { | |
4e0d5f92 | 257 | xfs_efi_log_format_32_t *src_efi_fmt_32 = buf->i_addr; |
6d192a9b TS |
258 | |
259 | dst_efi_fmt->efi_type = src_efi_fmt_32->efi_type; | |
260 | dst_efi_fmt->efi_size = src_efi_fmt_32->efi_size; | |
261 | dst_efi_fmt->efi_nextents = src_efi_fmt_32->efi_nextents; | |
262 | dst_efi_fmt->efi_id = src_efi_fmt_32->efi_id; | |
263 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
264 | dst_efi_fmt->efi_extents[i].ext_start = | |
265 | src_efi_fmt_32->efi_extents[i].ext_start; | |
266 | dst_efi_fmt->efi_extents[i].ext_len = | |
267 | src_efi_fmt_32->efi_extents[i].ext_len; | |
268 | } | |
269 | return 0; | |
270 | } else if (buf->i_len == len64) { | |
4e0d5f92 | 271 | xfs_efi_log_format_64_t *src_efi_fmt_64 = buf->i_addr; |
6d192a9b TS |
272 | |
273 | dst_efi_fmt->efi_type = src_efi_fmt_64->efi_type; | |
274 | dst_efi_fmt->efi_size = src_efi_fmt_64->efi_size; | |
275 | dst_efi_fmt->efi_nextents = src_efi_fmt_64->efi_nextents; | |
276 | dst_efi_fmt->efi_id = src_efi_fmt_64->efi_id; | |
277 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
278 | dst_efi_fmt->efi_extents[i].ext_start = | |
279 | src_efi_fmt_64->efi_extents[i].ext_start; | |
280 | dst_efi_fmt->efi_extents[i].ext_len = | |
281 | src_efi_fmt_64->efi_extents[i].ext_len; | |
282 | } | |
283 | return 0; | |
284 | } | |
2451337d | 285 | return -EFSCORRUPTED; |
6d192a9b TS |
286 | } |
287 | ||
7bfa31d8 | 288 | static inline struct xfs_efd_log_item *EFD_ITEM(struct xfs_log_item *lip) |
7d795ca3 | 289 | { |
7bfa31d8 CH |
290 | return container_of(lip, struct xfs_efd_log_item, efd_item); |
291 | } | |
1da177e4 | 292 | |
7bfa31d8 CH |
293 | STATIC void |
294 | xfs_efd_item_free(struct xfs_efd_log_item *efdp) | |
295 | { | |
b1c5ebb2 | 296 | kmem_free(efdp->efd_item.li_lv_shadow); |
7bfa31d8 | 297 | if (efdp->efd_format.efd_nextents > XFS_EFD_MAX_FAST_EXTENTS) |
f0e2d93c | 298 | kmem_free(efdp); |
7bfa31d8 | 299 | else |
7d795ca3 | 300 | kmem_zone_free(xfs_efd_zone, efdp); |
7d795ca3 | 301 | } |
1da177e4 LT |
302 | |
303 | /* | |
304 | * This returns the number of iovecs needed to log the given efd item. | |
305 | * We only need 1 iovec for an efd item. It just logs the efd_log_format | |
306 | * structure. | |
307 | */ | |
166d1368 DC |
308 | static inline int |
309 | xfs_efd_item_sizeof( | |
310 | struct xfs_efd_log_item *efdp) | |
311 | { | |
312 | return sizeof(xfs_efd_log_format_t) + | |
313 | (efdp->efd_format.efd_nextents - 1) * sizeof(xfs_extent_t); | |
314 | } | |
315 | ||
316 | STATIC void | |
7bfa31d8 | 317 | xfs_efd_item_size( |
166d1368 DC |
318 | struct xfs_log_item *lip, |
319 | int *nvecs, | |
320 | int *nbytes) | |
1da177e4 | 321 | { |
166d1368 DC |
322 | *nvecs += 1; |
323 | *nbytes += xfs_efd_item_sizeof(EFD_ITEM(lip)); | |
1da177e4 LT |
324 | } |
325 | ||
326 | /* | |
327 | * This is called to fill in the vector of log iovecs for the | |
328 | * given efd log item. We use only 1 iovec, and we point that | |
329 | * at the efd_log_format structure embedded in the efd item. | |
330 | * It is at this point that we assert that all of the extent | |
331 | * slots in the efd item have been filled. | |
332 | */ | |
333 | STATIC void | |
7bfa31d8 CH |
334 | xfs_efd_item_format( |
335 | struct xfs_log_item *lip, | |
bde7cff6 | 336 | struct xfs_log_vec *lv) |
1da177e4 | 337 | { |
7bfa31d8 | 338 | struct xfs_efd_log_item *efdp = EFD_ITEM(lip); |
bde7cff6 | 339 | struct xfs_log_iovec *vecp = NULL; |
1da177e4 LT |
340 | |
341 | ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents); | |
342 | ||
343 | efdp->efd_format.efd_type = XFS_LI_EFD; | |
1da177e4 LT |
344 | efdp->efd_format.efd_size = 1; |
345 | ||
bde7cff6 | 346 | xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFD_FORMAT, |
1234351c CH |
347 | &efdp->efd_format, |
348 | xfs_efd_item_sizeof(efdp)); | |
1da177e4 LT |
349 | } |
350 | ||
1da177e4 LT |
351 | /* |
352 | * Pinning has no meaning for an efd item, so just return. | |
353 | */ | |
1da177e4 | 354 | STATIC void |
7bfa31d8 CH |
355 | xfs_efd_item_pin( |
356 | struct xfs_log_item *lip) | |
1da177e4 | 357 | { |
1da177e4 LT |
358 | } |
359 | ||
1da177e4 LT |
360 | /* |
361 | * Since pinning has no meaning for an efd item, unpinning does | |
362 | * not either. | |
363 | */ | |
1da177e4 | 364 | STATIC void |
7bfa31d8 CH |
365 | xfs_efd_item_unpin( |
366 | struct xfs_log_item *lip, | |
367 | int remove) | |
1da177e4 | 368 | { |
1da177e4 LT |
369 | } |
370 | ||
371 | /* | |
43ff2122 CH |
372 | * There isn't much you can do to push on an efd item. It is simply stuck |
373 | * waiting for the log to be flushed to disk. | |
1da177e4 | 374 | */ |
1da177e4 | 375 | STATIC uint |
43ff2122 CH |
376 | xfs_efd_item_push( |
377 | struct xfs_log_item *lip, | |
378 | struct list_head *buffer_list) | |
1da177e4 | 379 | { |
43ff2122 | 380 | return XFS_ITEM_PINNED; |
1da177e4 LT |
381 | } |
382 | ||
8d99fe92 BF |
383 | /* |
384 | * The EFD is either committed or aborted if the transaction is cancelled. If | |
385 | * the transaction is cancelled, drop our reference to the EFI and free the EFD. | |
386 | */ | |
1da177e4 | 387 | STATIC void |
7bfa31d8 CH |
388 | xfs_efd_item_unlock( |
389 | struct xfs_log_item *lip) | |
1da177e4 | 390 | { |
8d99fe92 BF |
391 | struct xfs_efd_log_item *efdp = EFD_ITEM(lip); |
392 | ||
22525c17 | 393 | if (test_bit(XFS_LI_ABORTED, &lip->li_flags)) { |
8d99fe92 BF |
394 | xfs_efi_release(efdp->efd_efip); |
395 | xfs_efd_item_free(efdp); | |
396 | } | |
1da177e4 LT |
397 | } |
398 | ||
399 | /* | |
8d99fe92 BF |
400 | * When the efd item is committed to disk, all we need to do is delete our |
401 | * reference to our partner efi item and then free ourselves. Since we're | |
402 | * freeing ourselves we must return -1 to keep the transaction code from further | |
403 | * referencing this item. | |
1da177e4 | 404 | */ |
1da177e4 | 405 | STATIC xfs_lsn_t |
7bfa31d8 CH |
406 | xfs_efd_item_committed( |
407 | struct xfs_log_item *lip, | |
408 | xfs_lsn_t lsn) | |
1da177e4 | 409 | { |
7bfa31d8 CH |
410 | struct xfs_efd_log_item *efdp = EFD_ITEM(lip); |
411 | ||
1da177e4 | 412 | /* |
8d99fe92 BF |
413 | * Drop the EFI reference regardless of whether the EFD has been |
414 | * aborted. Once the EFD transaction is constructed, it is the sole | |
415 | * responsibility of the EFD to release the EFI (even if the EFI is | |
416 | * aborted due to log I/O error). | |
1da177e4 | 417 | */ |
8d99fe92 | 418 | xfs_efi_release(efdp->efd_efip); |
7d795ca3 | 419 | xfs_efd_item_free(efdp); |
8d99fe92 | 420 | |
1da177e4 LT |
421 | return (xfs_lsn_t)-1; |
422 | } | |
423 | ||
1da177e4 LT |
424 | /* |
425 | * The EFD dependency tracking op doesn't do squat. It can't because | |
426 | * it doesn't know where the free extent is coming from. The dependency | |
427 | * tracking has to be handled by the "enclosing" metadata object. For | |
428 | * example, for inodes, the inode is locked throughout the extent freeing | |
429 | * so the dependency should be recorded there. | |
430 | */ | |
1da177e4 | 431 | STATIC void |
7bfa31d8 CH |
432 | xfs_efd_item_committing( |
433 | struct xfs_log_item *lip, | |
434 | xfs_lsn_t lsn) | |
1da177e4 | 435 | { |
1da177e4 LT |
436 | } |
437 | ||
438 | /* | |
439 | * This is the ops vector shared by all efd log items. | |
440 | */ | |
272e42b2 | 441 | static const struct xfs_item_ops xfs_efd_item_ops = { |
7bfa31d8 CH |
442 | .iop_size = xfs_efd_item_size, |
443 | .iop_format = xfs_efd_item_format, | |
444 | .iop_pin = xfs_efd_item_pin, | |
445 | .iop_unpin = xfs_efd_item_unpin, | |
7bfa31d8 CH |
446 | .iop_unlock = xfs_efd_item_unlock, |
447 | .iop_committed = xfs_efd_item_committed, | |
448 | .iop_push = xfs_efd_item_push, | |
449 | .iop_committing = xfs_efd_item_committing | |
1da177e4 LT |
450 | }; |
451 | ||
1da177e4 LT |
452 | /* |
453 | * Allocate and initialize an efd item with the given number of extents. | |
454 | */ | |
7bfa31d8 CH |
455 | struct xfs_efd_log_item * |
456 | xfs_efd_init( | |
457 | struct xfs_mount *mp, | |
458 | struct xfs_efi_log_item *efip, | |
459 | uint nextents) | |
1da177e4 LT |
460 | |
461 | { | |
7bfa31d8 | 462 | struct xfs_efd_log_item *efdp; |
1da177e4 LT |
463 | uint size; |
464 | ||
465 | ASSERT(nextents > 0); | |
466 | if (nextents > XFS_EFD_MAX_FAST_EXTENTS) { | |
467 | size = (uint)(sizeof(xfs_efd_log_item_t) + | |
468 | ((nextents - 1) * sizeof(xfs_extent_t))); | |
7bfa31d8 | 469 | efdp = kmem_zalloc(size, KM_SLEEP); |
1da177e4 | 470 | } else { |
7bfa31d8 | 471 | efdp = kmem_zone_zalloc(xfs_efd_zone, KM_SLEEP); |
1da177e4 LT |
472 | } |
473 | ||
43f5efc5 | 474 | xfs_log_item_init(mp, &efdp->efd_item, XFS_LI_EFD, &xfs_efd_item_ops); |
1da177e4 LT |
475 | efdp->efd_efip = efip; |
476 | efdp->efd_format.efd_nextents = nextents; | |
477 | efdp->efd_format.efd_efi_id = efip->efi_format.efi_id; | |
478 | ||
7bfa31d8 | 479 | return efdp; |
1da177e4 | 480 | } |
dc42375d DW |
481 | |
482 | /* | |
483 | * Process an extent free intent item that was recovered from | |
484 | * the log. We need to free the extents that it describes. | |
485 | */ | |
486 | int | |
487 | xfs_efi_recover( | |
488 | struct xfs_mount *mp, | |
489 | struct xfs_efi_log_item *efip) | |
490 | { | |
491 | struct xfs_efd_log_item *efdp; | |
492 | struct xfs_trans *tp; | |
493 | int i; | |
494 | int error = 0; | |
495 | xfs_extent_t *extp; | |
496 | xfs_fsblock_t startblock_fsb; | |
497 | ||
498 | ASSERT(!test_bit(XFS_EFI_RECOVERED, &efip->efi_flags)); | |
499 | ||
500 | /* | |
501 | * First check the validity of the extents described by the | |
502 | * EFI. If any are bad, then assume that all are bad and | |
503 | * just toss the EFI. | |
504 | */ | |
505 | for (i = 0; i < efip->efi_format.efi_nextents; i++) { | |
e127fafd | 506 | extp = &efip->efi_format.efi_extents[i]; |
dc42375d DW |
507 | startblock_fsb = XFS_BB_TO_FSB(mp, |
508 | XFS_FSB_TO_DADDR(mp, extp->ext_start)); | |
e127fafd DW |
509 | if (startblock_fsb == 0 || |
510 | extp->ext_len == 0 || | |
511 | startblock_fsb >= mp->m_sb.sb_dblocks || | |
512 | extp->ext_len >= mp->m_sb.sb_agblocks) { | |
dc42375d DW |
513 | /* |
514 | * This will pull the EFI from the AIL and | |
515 | * free the memory associated with it. | |
516 | */ | |
517 | set_bit(XFS_EFI_RECOVERED, &efip->efi_flags); | |
518 | xfs_efi_release(efip); | |
519 | return -EIO; | |
520 | } | |
521 | } | |
522 | ||
523 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp); | |
524 | if (error) | |
525 | return error; | |
526 | efdp = xfs_trans_get_efd(tp, efip, efip->efi_format.efi_nextents); | |
527 | ||
528 | for (i = 0; i < efip->efi_format.efi_nextents; i++) { | |
e127fafd | 529 | extp = &efip->efi_format.efi_extents[i]; |
dc42375d | 530 | error = xfs_trans_free_extent(tp, efdp, extp->ext_start, |
7280feda DW |
531 | extp->ext_len, |
532 | &XFS_RMAP_OINFO_ANY_OWNER, false); | |
dc42375d DW |
533 | if (error) |
534 | goto abort_error; | |
535 | ||
536 | } | |
537 | ||
538 | set_bit(XFS_EFI_RECOVERED, &efip->efi_flags); | |
539 | error = xfs_trans_commit(tp); | |
540 | return error; | |
541 | ||
542 | abort_error: | |
543 | xfs_trans_cancel(tp); | |
544 | return error; | |
545 | } |