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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" |
5467b34b | 12 | #include "xfs_shared.h" |
1da177e4 | 13 | #include "xfs_mount.h" |
81f40041 | 14 | #include "xfs_defer.h" |
239880ef | 15 | #include "xfs_trans.h" |
1da177e4 LT |
16 | #include "xfs_trans_priv.h" |
17 | #include "xfs_extfree_item.h" | |
1234351c | 18 | #include "xfs_log.h" |
340785cc DW |
19 | #include "xfs_btree.h" |
20 | #include "xfs_rmap.h" | |
81f40041 CH |
21 | #include "xfs_alloc.h" |
22 | #include "xfs_bmap.h" | |
23 | #include "xfs_trace.h" | |
a5155b87 | 24 | #include "xfs_error.h" |
86ffa471 | 25 | #include "xfs_log_recover.h" |
1da177e4 LT |
26 | |
27 | kmem_zone_t *xfs_efi_zone; | |
28 | kmem_zone_t *xfs_efd_zone; | |
29 | ||
7bfa31d8 CH |
30 | static inline struct xfs_efi_log_item *EFI_ITEM(struct xfs_log_item *lip) |
31 | { | |
32 | return container_of(lip, struct xfs_efi_log_item, efi_item); | |
33 | } | |
1da177e4 | 34 | |
7d795ca3 | 35 | void |
7bfa31d8 CH |
36 | xfs_efi_item_free( |
37 | struct xfs_efi_log_item *efip) | |
7d795ca3 | 38 | { |
b1c5ebb2 | 39 | kmem_free(efip->efi_item.li_lv_shadow); |
7bfa31d8 | 40 | if (efip->efi_format.efi_nextents > XFS_EFI_MAX_FAST_EXTENTS) |
f0e2d93c | 41 | kmem_free(efip); |
7bfa31d8 | 42 | else |
377bcd5f | 43 | kmem_cache_free(xfs_efi_zone, efip); |
7d795ca3 | 44 | } |
1da177e4 | 45 | |
0612d116 DC |
46 | /* |
47 | * Freeing the efi requires that we remove it from the AIL if it has already | |
48 | * been placed there. However, the EFI may not yet have been placed in the AIL | |
49 | * when called by xfs_efi_release() from EFD processing due to the ordering of | |
50 | * committed vs unpin operations in bulk insert operations. Hence the reference | |
51 | * count to ensure only the last caller frees the EFI. | |
52 | */ | |
53 | void | |
54 | xfs_efi_release( | |
55 | struct xfs_efi_log_item *efip) | |
56 | { | |
57 | ASSERT(atomic_read(&efip->efi_refcount) > 0); | |
58 | if (atomic_dec_and_test(&efip->efi_refcount)) { | |
65587929 | 59 | xfs_trans_ail_delete(&efip->efi_item, SHUTDOWN_LOG_IO_ERROR); |
0612d116 DC |
60 | xfs_efi_item_free(efip); |
61 | } | |
62 | } | |
63 | ||
1da177e4 LT |
64 | /* |
65 | * This returns the number of iovecs needed to log the given efi item. | |
66 | * We only need 1 iovec for an efi item. It just logs the efi_log_format | |
67 | * structure. | |
68 | */ | |
166d1368 DC |
69 | static inline int |
70 | xfs_efi_item_sizeof( | |
71 | struct xfs_efi_log_item *efip) | |
72 | { | |
73 | return sizeof(struct xfs_efi_log_format) + | |
74 | (efip->efi_format.efi_nextents - 1) * sizeof(xfs_extent_t); | |
75 | } | |
76 | ||
77 | STATIC void | |
7bfa31d8 | 78 | xfs_efi_item_size( |
166d1368 DC |
79 | struct xfs_log_item *lip, |
80 | int *nvecs, | |
81 | int *nbytes) | |
1da177e4 | 82 | { |
166d1368 DC |
83 | *nvecs += 1; |
84 | *nbytes += xfs_efi_item_sizeof(EFI_ITEM(lip)); | |
1da177e4 LT |
85 | } |
86 | ||
87 | /* | |
88 | * This is called to fill in the vector of log iovecs for the | |
89 | * given efi log item. We use only 1 iovec, and we point that | |
90 | * at the efi_log_format structure embedded in the efi item. | |
91 | * It is at this point that we assert that all of the extent | |
92 | * slots in the efi item have been filled. | |
93 | */ | |
94 | STATIC void | |
7bfa31d8 CH |
95 | xfs_efi_item_format( |
96 | struct xfs_log_item *lip, | |
bde7cff6 | 97 | struct xfs_log_vec *lv) |
1da177e4 | 98 | { |
7bfa31d8 | 99 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
bde7cff6 | 100 | struct xfs_log_iovec *vecp = NULL; |
1da177e4 | 101 | |
b199c8a4 DC |
102 | ASSERT(atomic_read(&efip->efi_next_extent) == |
103 | efip->efi_format.efi_nextents); | |
1da177e4 LT |
104 | |
105 | efip->efi_format.efi_type = XFS_LI_EFI; | |
1da177e4 LT |
106 | efip->efi_format.efi_size = 1; |
107 | ||
bde7cff6 | 108 | xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFI_FORMAT, |
1234351c CH |
109 | &efip->efi_format, |
110 | xfs_efi_item_sizeof(efip)); | |
1da177e4 LT |
111 | } |
112 | ||
113 | ||
1da177e4 | 114 | /* |
8d99fe92 BF |
115 | * The unpin operation is the last place an EFI is manipulated in the log. It is |
116 | * either inserted in the AIL or aborted in the event of a log I/O error. In | |
117 | * either case, the EFI transaction has been successfully committed to make it | |
118 | * this far. Therefore, we expect whoever committed the EFI to either construct | |
119 | * and commit the EFD or drop the EFD's reference in the event of error. Simply | |
120 | * drop the log's EFI reference now that the log is done with it. | |
1da177e4 | 121 | */ |
1da177e4 | 122 | STATIC void |
7bfa31d8 CH |
123 | xfs_efi_item_unpin( |
124 | struct xfs_log_item *lip, | |
125 | int remove) | |
1da177e4 | 126 | { |
7bfa31d8 | 127 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
5e4b5386 | 128 | xfs_efi_release(efip); |
1da177e4 LT |
129 | } |
130 | ||
8d99fe92 BF |
131 | /* |
132 | * The EFI has been either committed or aborted if the transaction has been | |
133 | * cancelled. If the transaction was cancelled, an EFD isn't going to be | |
134 | * constructed and thus we free the EFI here directly. | |
135 | */ | |
1da177e4 | 136 | STATIC void |
ddf92053 | 137 | xfs_efi_item_release( |
7bfa31d8 | 138 | struct xfs_log_item *lip) |
1da177e4 | 139 | { |
ddf92053 | 140 | xfs_efi_release(EFI_ITEM(lip)); |
1da177e4 LT |
141 | } |
142 | ||
272e42b2 | 143 | static const struct xfs_item_ops xfs_efi_item_ops = { |
7bfa31d8 CH |
144 | .iop_size = xfs_efi_item_size, |
145 | .iop_format = xfs_efi_item_format, | |
7bfa31d8 | 146 | .iop_unpin = xfs_efi_item_unpin, |
ddf92053 | 147 | .iop_release = xfs_efi_item_release, |
1da177e4 LT |
148 | }; |
149 | ||
150 | ||
151 | /* | |
152 | * Allocate and initialize an efi item with the given number of extents. | |
153 | */ | |
7bfa31d8 CH |
154 | struct xfs_efi_log_item * |
155 | xfs_efi_init( | |
156 | struct xfs_mount *mp, | |
157 | uint nextents) | |
1da177e4 LT |
158 | |
159 | { | |
7bfa31d8 | 160 | struct xfs_efi_log_item *efip; |
1da177e4 LT |
161 | uint size; |
162 | ||
163 | ASSERT(nextents > 0); | |
164 | if (nextents > XFS_EFI_MAX_FAST_EXTENTS) { | |
82ff450b | 165 | size = (uint)(sizeof(struct xfs_efi_log_item) + |
1da177e4 | 166 | ((nextents - 1) * sizeof(xfs_extent_t))); |
707e0dda | 167 | efip = kmem_zalloc(size, 0); |
1da177e4 | 168 | } else { |
707e0dda | 169 | efip = kmem_zone_zalloc(xfs_efi_zone, 0); |
1da177e4 LT |
170 | } |
171 | ||
43f5efc5 | 172 | xfs_log_item_init(mp, &efip->efi_item, XFS_LI_EFI, &xfs_efi_item_ops); |
1da177e4 | 173 | efip->efi_format.efi_nextents = nextents; |
db9d67d6 | 174 | efip->efi_format.efi_id = (uintptr_t)(void *)efip; |
b199c8a4 | 175 | atomic_set(&efip->efi_next_extent, 0); |
666d644c | 176 | atomic_set(&efip->efi_refcount, 2); |
1da177e4 | 177 | |
7bfa31d8 | 178 | return efip; |
1da177e4 LT |
179 | } |
180 | ||
6d192a9b TS |
181 | /* |
182 | * Copy an EFI format buffer from the given buf, and into the destination | |
183 | * EFI format structure. | |
184 | * The given buffer can be in 32 bit or 64 bit form (which has different padding), | |
185 | * one of which will be the native format for this kernel. | |
186 | * It will handle the conversion of formats if necessary. | |
187 | */ | |
188 | int | |
189 | xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt) | |
190 | { | |
4e0d5f92 | 191 | xfs_efi_log_format_t *src_efi_fmt = buf->i_addr; |
6d192a9b TS |
192 | uint i; |
193 | uint len = sizeof(xfs_efi_log_format_t) + | |
194 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_t); | |
195 | uint len32 = sizeof(xfs_efi_log_format_32_t) + | |
196 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_32_t); | |
197 | uint len64 = sizeof(xfs_efi_log_format_64_t) + | |
198 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_64_t); | |
199 | ||
200 | if (buf->i_len == len) { | |
201 | memcpy((char *)dst_efi_fmt, (char*)src_efi_fmt, len); | |
202 | return 0; | |
203 | } else if (buf->i_len == len32) { | |
4e0d5f92 | 204 | xfs_efi_log_format_32_t *src_efi_fmt_32 = buf->i_addr; |
6d192a9b TS |
205 | |
206 | dst_efi_fmt->efi_type = src_efi_fmt_32->efi_type; | |
207 | dst_efi_fmt->efi_size = src_efi_fmt_32->efi_size; | |
208 | dst_efi_fmt->efi_nextents = src_efi_fmt_32->efi_nextents; | |
209 | dst_efi_fmt->efi_id = src_efi_fmt_32->efi_id; | |
210 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
211 | dst_efi_fmt->efi_extents[i].ext_start = | |
212 | src_efi_fmt_32->efi_extents[i].ext_start; | |
213 | dst_efi_fmt->efi_extents[i].ext_len = | |
214 | src_efi_fmt_32->efi_extents[i].ext_len; | |
215 | } | |
216 | return 0; | |
217 | } else if (buf->i_len == len64) { | |
4e0d5f92 | 218 | xfs_efi_log_format_64_t *src_efi_fmt_64 = buf->i_addr; |
6d192a9b TS |
219 | |
220 | dst_efi_fmt->efi_type = src_efi_fmt_64->efi_type; | |
221 | dst_efi_fmt->efi_size = src_efi_fmt_64->efi_size; | |
222 | dst_efi_fmt->efi_nextents = src_efi_fmt_64->efi_nextents; | |
223 | dst_efi_fmt->efi_id = src_efi_fmt_64->efi_id; | |
224 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
225 | dst_efi_fmt->efi_extents[i].ext_start = | |
226 | src_efi_fmt_64->efi_extents[i].ext_start; | |
227 | dst_efi_fmt->efi_extents[i].ext_len = | |
228 | src_efi_fmt_64->efi_extents[i].ext_len; | |
229 | } | |
230 | return 0; | |
231 | } | |
a5155b87 | 232 | XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, NULL); |
2451337d | 233 | return -EFSCORRUPTED; |
6d192a9b TS |
234 | } |
235 | ||
7bfa31d8 | 236 | static inline struct xfs_efd_log_item *EFD_ITEM(struct xfs_log_item *lip) |
7d795ca3 | 237 | { |
7bfa31d8 CH |
238 | return container_of(lip, struct xfs_efd_log_item, efd_item); |
239 | } | |
1da177e4 | 240 | |
7bfa31d8 CH |
241 | STATIC void |
242 | xfs_efd_item_free(struct xfs_efd_log_item *efdp) | |
243 | { | |
b1c5ebb2 | 244 | kmem_free(efdp->efd_item.li_lv_shadow); |
7bfa31d8 | 245 | if (efdp->efd_format.efd_nextents > XFS_EFD_MAX_FAST_EXTENTS) |
f0e2d93c | 246 | kmem_free(efdp); |
7bfa31d8 | 247 | else |
377bcd5f | 248 | kmem_cache_free(xfs_efd_zone, efdp); |
7d795ca3 | 249 | } |
1da177e4 LT |
250 | |
251 | /* | |
252 | * This returns the number of iovecs needed to log the given efd item. | |
253 | * We only need 1 iovec for an efd item. It just logs the efd_log_format | |
254 | * structure. | |
255 | */ | |
166d1368 DC |
256 | static inline int |
257 | xfs_efd_item_sizeof( | |
258 | struct xfs_efd_log_item *efdp) | |
259 | { | |
260 | return sizeof(xfs_efd_log_format_t) + | |
261 | (efdp->efd_format.efd_nextents - 1) * sizeof(xfs_extent_t); | |
262 | } | |
263 | ||
264 | STATIC void | |
7bfa31d8 | 265 | xfs_efd_item_size( |
166d1368 DC |
266 | struct xfs_log_item *lip, |
267 | int *nvecs, | |
268 | int *nbytes) | |
1da177e4 | 269 | { |
166d1368 DC |
270 | *nvecs += 1; |
271 | *nbytes += xfs_efd_item_sizeof(EFD_ITEM(lip)); | |
1da177e4 LT |
272 | } |
273 | ||
274 | /* | |
275 | * This is called to fill in the vector of log iovecs for the | |
276 | * given efd log item. We use only 1 iovec, and we point that | |
277 | * at the efd_log_format structure embedded in the efd item. | |
278 | * It is at this point that we assert that all of the extent | |
279 | * slots in the efd item have been filled. | |
280 | */ | |
281 | STATIC void | |
7bfa31d8 CH |
282 | xfs_efd_item_format( |
283 | struct xfs_log_item *lip, | |
bde7cff6 | 284 | struct xfs_log_vec *lv) |
1da177e4 | 285 | { |
7bfa31d8 | 286 | struct xfs_efd_log_item *efdp = EFD_ITEM(lip); |
bde7cff6 | 287 | struct xfs_log_iovec *vecp = NULL; |
1da177e4 LT |
288 | |
289 | ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents); | |
290 | ||
291 | efdp->efd_format.efd_type = XFS_LI_EFD; | |
1da177e4 LT |
292 | efdp->efd_format.efd_size = 1; |
293 | ||
bde7cff6 | 294 | xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFD_FORMAT, |
1234351c CH |
295 | &efdp->efd_format, |
296 | xfs_efd_item_sizeof(efdp)); | |
1da177e4 LT |
297 | } |
298 | ||
8d99fe92 BF |
299 | /* |
300 | * The EFD is either committed or aborted if the transaction is cancelled. If | |
301 | * the transaction is cancelled, drop our reference to the EFI and free the EFD. | |
302 | */ | |
1da177e4 | 303 | STATIC void |
ddf92053 | 304 | xfs_efd_item_release( |
7bfa31d8 | 305 | struct xfs_log_item *lip) |
1da177e4 | 306 | { |
8d99fe92 BF |
307 | struct xfs_efd_log_item *efdp = EFD_ITEM(lip); |
308 | ||
ddf92053 CH |
309 | xfs_efi_release(efdp->efd_efip); |
310 | xfs_efd_item_free(efdp); | |
1da177e4 LT |
311 | } |
312 | ||
272e42b2 | 313 | static const struct xfs_item_ops xfs_efd_item_ops = { |
9ce632a2 | 314 | .flags = XFS_ITEM_RELEASE_WHEN_COMMITTED, |
7bfa31d8 CH |
315 | .iop_size = xfs_efd_item_size, |
316 | .iop_format = xfs_efd_item_format, | |
ddf92053 | 317 | .iop_release = xfs_efd_item_release, |
1da177e4 LT |
318 | }; |
319 | ||
1da177e4 | 320 | /* |
9c5e7c2a CH |
321 | * Allocate an "extent free done" log item that will hold nextents worth of |
322 | * extents. The caller must use all nextents extents, because we are not | |
323 | * flexible about this at all. | |
1da177e4 | 324 | */ |
81f40041 | 325 | static struct xfs_efd_log_item * |
9c5e7c2a CH |
326 | xfs_trans_get_efd( |
327 | struct xfs_trans *tp, | |
328 | struct xfs_efi_log_item *efip, | |
329 | unsigned int nextents) | |
1da177e4 | 330 | { |
9c5e7c2a | 331 | struct xfs_efd_log_item *efdp; |
1da177e4 LT |
332 | |
333 | ASSERT(nextents > 0); | |
9c5e7c2a | 334 | |
1da177e4 | 335 | if (nextents > XFS_EFD_MAX_FAST_EXTENTS) { |
9c5e7c2a CH |
336 | efdp = kmem_zalloc(sizeof(struct xfs_efd_log_item) + |
337 | (nextents - 1) * sizeof(struct xfs_extent), | |
707e0dda | 338 | 0); |
1da177e4 | 339 | } else { |
707e0dda | 340 | efdp = kmem_zone_zalloc(xfs_efd_zone, 0); |
1da177e4 LT |
341 | } |
342 | ||
9c5e7c2a CH |
343 | xfs_log_item_init(tp->t_mountp, &efdp->efd_item, XFS_LI_EFD, |
344 | &xfs_efd_item_ops); | |
1da177e4 LT |
345 | efdp->efd_efip = efip; |
346 | efdp->efd_format.efd_nextents = nextents; | |
347 | efdp->efd_format.efd_efi_id = efip->efi_format.efi_id; | |
348 | ||
9c5e7c2a | 349 | xfs_trans_add_item(tp, &efdp->efd_item); |
7bfa31d8 | 350 | return efdp; |
1da177e4 | 351 | } |
dc42375d | 352 | |
81f40041 CH |
353 | /* |
354 | * Free an extent and log it to the EFD. Note that the transaction is marked | |
355 | * dirty regardless of whether the extent free succeeds or fails to support the | |
356 | * EFI/EFD lifecycle rules. | |
357 | */ | |
358 | static int | |
359 | xfs_trans_free_extent( | |
360 | struct xfs_trans *tp, | |
361 | struct xfs_efd_log_item *efdp, | |
362 | xfs_fsblock_t start_block, | |
363 | xfs_extlen_t ext_len, | |
364 | const struct xfs_owner_info *oinfo, | |
365 | bool skip_discard) | |
366 | { | |
367 | struct xfs_mount *mp = tp->t_mountp; | |
368 | struct xfs_extent *extp; | |
369 | uint next_extent; | |
370 | xfs_agnumber_t agno = XFS_FSB_TO_AGNO(mp, start_block); | |
371 | xfs_agblock_t agbno = XFS_FSB_TO_AGBNO(mp, | |
372 | start_block); | |
373 | int error; | |
374 | ||
375 | trace_xfs_bmap_free_deferred(tp->t_mountp, agno, 0, agbno, ext_len); | |
376 | ||
377 | error = __xfs_free_extent(tp, start_block, ext_len, | |
378 | oinfo, XFS_AG_RESV_NONE, skip_discard); | |
379 | /* | |
380 | * Mark the transaction dirty, even on error. This ensures the | |
381 | * transaction is aborted, which: | |
382 | * | |
383 | * 1.) releases the EFI and frees the EFD | |
384 | * 2.) shuts down the filesystem | |
385 | */ | |
386 | tp->t_flags |= XFS_TRANS_DIRTY; | |
387 | set_bit(XFS_LI_DIRTY, &efdp->efd_item.li_flags); | |
388 | ||
389 | next_extent = efdp->efd_next_extent; | |
390 | ASSERT(next_extent < efdp->efd_format.efd_nextents); | |
391 | extp = &(efdp->efd_format.efd_extents[next_extent]); | |
392 | extp->ext_start = start_block; | |
393 | extp->ext_len = ext_len; | |
394 | efdp->efd_next_extent++; | |
395 | ||
396 | return error; | |
397 | } | |
398 | ||
399 | /* Sort bmap items by AG. */ | |
400 | static int | |
401 | xfs_extent_free_diff_items( | |
402 | void *priv, | |
403 | struct list_head *a, | |
404 | struct list_head *b) | |
405 | { | |
406 | struct xfs_mount *mp = priv; | |
407 | struct xfs_extent_free_item *ra; | |
408 | struct xfs_extent_free_item *rb; | |
409 | ||
410 | ra = container_of(a, struct xfs_extent_free_item, xefi_list); | |
411 | rb = container_of(b, struct xfs_extent_free_item, xefi_list); | |
412 | return XFS_FSB_TO_AGNO(mp, ra->xefi_startblock) - | |
413 | XFS_FSB_TO_AGNO(mp, rb->xefi_startblock); | |
414 | } | |
415 | ||
81f40041 CH |
416 | /* Log a free extent to the intent item. */ |
417 | STATIC void | |
418 | xfs_extent_free_log_item( | |
419 | struct xfs_trans *tp, | |
c1f09188 CH |
420 | struct xfs_efi_log_item *efip, |
421 | struct xfs_extent_free_item *free) | |
81f40041 | 422 | { |
81f40041 CH |
423 | uint next_extent; |
424 | struct xfs_extent *extp; | |
425 | ||
81f40041 CH |
426 | tp->t_flags |= XFS_TRANS_DIRTY; |
427 | set_bit(XFS_LI_DIRTY, &efip->efi_item.li_flags); | |
428 | ||
429 | /* | |
430 | * atomic_inc_return gives us the value after the increment; | |
431 | * we want to use it as an array index so we need to subtract 1 from | |
432 | * it. | |
433 | */ | |
434 | next_extent = atomic_inc_return(&efip->efi_next_extent) - 1; | |
435 | ASSERT(next_extent < efip->efi_format.efi_nextents); | |
436 | extp = &efip->efi_format.efi_extents[next_extent]; | |
437 | extp->ext_start = free->xefi_startblock; | |
438 | extp->ext_len = free->xefi_blockcount; | |
439 | } | |
440 | ||
13a83333 | 441 | static struct xfs_log_item * |
c1f09188 CH |
442 | xfs_extent_free_create_intent( |
443 | struct xfs_trans *tp, | |
444 | struct list_head *items, | |
d367a868 CH |
445 | unsigned int count, |
446 | bool sort) | |
c1f09188 CH |
447 | { |
448 | struct xfs_mount *mp = tp->t_mountp; | |
449 | struct xfs_efi_log_item *efip = xfs_efi_init(mp, count); | |
450 | struct xfs_extent_free_item *free; | |
451 | ||
452 | ASSERT(count > 0); | |
453 | ||
454 | xfs_trans_add_item(tp, &efip->efi_item); | |
d367a868 CH |
455 | if (sort) |
456 | list_sort(mp, items, xfs_extent_free_diff_items); | |
c1f09188 CH |
457 | list_for_each_entry(free, items, xefi_list) |
458 | xfs_extent_free_log_item(tp, efip, free); | |
13a83333 | 459 | return &efip->efi_item; |
c1f09188 CH |
460 | } |
461 | ||
81f40041 | 462 | /* Get an EFD so we can process all the free extents. */ |
f09d167c | 463 | static struct xfs_log_item * |
81f40041 CH |
464 | xfs_extent_free_create_done( |
465 | struct xfs_trans *tp, | |
13a83333 | 466 | struct xfs_log_item *intent, |
81f40041 CH |
467 | unsigned int count) |
468 | { | |
f09d167c | 469 | return &xfs_trans_get_efd(tp, EFI_ITEM(intent), count)->efd_item; |
81f40041 CH |
470 | } |
471 | ||
472 | /* Process a free extent. */ | |
473 | STATIC int | |
474 | xfs_extent_free_finish_item( | |
475 | struct xfs_trans *tp, | |
f09d167c | 476 | struct xfs_log_item *done, |
81f40041 | 477 | struct list_head *item, |
3ec1b26c | 478 | struct xfs_btree_cur **state) |
81f40041 CH |
479 | { |
480 | struct xfs_extent_free_item *free; | |
481 | int error; | |
482 | ||
483 | free = container_of(item, struct xfs_extent_free_item, xefi_list); | |
f09d167c | 484 | error = xfs_trans_free_extent(tp, EFD_ITEM(done), |
81f40041 CH |
485 | free->xefi_startblock, |
486 | free->xefi_blockcount, | |
487 | &free->xefi_oinfo, free->xefi_skip_discard); | |
488 | kmem_free(free); | |
489 | return error; | |
490 | } | |
491 | ||
492 | /* Abort all pending EFIs. */ | |
493 | STATIC void | |
494 | xfs_extent_free_abort_intent( | |
13a83333 | 495 | struct xfs_log_item *intent) |
81f40041 | 496 | { |
13a83333 | 497 | xfs_efi_release(EFI_ITEM(intent)); |
81f40041 CH |
498 | } |
499 | ||
500 | /* Cancel a free extent. */ | |
501 | STATIC void | |
502 | xfs_extent_free_cancel_item( | |
503 | struct list_head *item) | |
504 | { | |
505 | struct xfs_extent_free_item *free; | |
506 | ||
507 | free = container_of(item, struct xfs_extent_free_item, xefi_list); | |
508 | kmem_free(free); | |
509 | } | |
510 | ||
511 | const struct xfs_defer_op_type xfs_extent_free_defer_type = { | |
512 | .max_items = XFS_EFI_MAX_FAST_EXTENTS, | |
81f40041 CH |
513 | .create_intent = xfs_extent_free_create_intent, |
514 | .abort_intent = xfs_extent_free_abort_intent, | |
81f40041 CH |
515 | .create_done = xfs_extent_free_create_done, |
516 | .finish_item = xfs_extent_free_finish_item, | |
517 | .cancel_item = xfs_extent_free_cancel_item, | |
518 | }; | |
519 | ||
520 | /* | |
521 | * AGFL blocks are accounted differently in the reserve pools and are not | |
522 | * inserted into the busy extent list. | |
523 | */ | |
524 | STATIC int | |
525 | xfs_agfl_free_finish_item( | |
526 | struct xfs_trans *tp, | |
f09d167c | 527 | struct xfs_log_item *done, |
81f40041 | 528 | struct list_head *item, |
3ec1b26c | 529 | struct xfs_btree_cur **state) |
81f40041 CH |
530 | { |
531 | struct xfs_mount *mp = tp->t_mountp; | |
f09d167c | 532 | struct xfs_efd_log_item *efdp = EFD_ITEM(done); |
81f40041 CH |
533 | struct xfs_extent_free_item *free; |
534 | struct xfs_extent *extp; | |
535 | struct xfs_buf *agbp; | |
536 | int error; | |
537 | xfs_agnumber_t agno; | |
538 | xfs_agblock_t agbno; | |
539 | uint next_extent; | |
540 | ||
541 | free = container_of(item, struct xfs_extent_free_item, xefi_list); | |
542 | ASSERT(free->xefi_blockcount == 1); | |
543 | agno = XFS_FSB_TO_AGNO(mp, free->xefi_startblock); | |
544 | agbno = XFS_FSB_TO_AGBNO(mp, free->xefi_startblock); | |
545 | ||
546 | trace_xfs_agfl_free_deferred(mp, agno, 0, agbno, free->xefi_blockcount); | |
547 | ||
548 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp); | |
549 | if (!error) | |
550 | error = xfs_free_agfl_block(tp, agno, agbno, agbp, | |
551 | &free->xefi_oinfo); | |
552 | ||
553 | /* | |
554 | * Mark the transaction dirty, even on error. This ensures the | |
555 | * transaction is aborted, which: | |
556 | * | |
557 | * 1.) releases the EFI and frees the EFD | |
558 | * 2.) shuts down the filesystem | |
559 | */ | |
560 | tp->t_flags |= XFS_TRANS_DIRTY; | |
561 | set_bit(XFS_LI_DIRTY, &efdp->efd_item.li_flags); | |
562 | ||
563 | next_extent = efdp->efd_next_extent; | |
564 | ASSERT(next_extent < efdp->efd_format.efd_nextents); | |
565 | extp = &(efdp->efd_format.efd_extents[next_extent]); | |
566 | extp->ext_start = free->xefi_startblock; | |
567 | extp->ext_len = free->xefi_blockcount; | |
568 | efdp->efd_next_extent++; | |
569 | ||
570 | kmem_free(free); | |
571 | return error; | |
572 | } | |
573 | ||
574 | /* sub-type with special handling for AGFL deferred frees */ | |
575 | const struct xfs_defer_op_type xfs_agfl_free_defer_type = { | |
576 | .max_items = XFS_EFI_MAX_FAST_EXTENTS, | |
81f40041 CH |
577 | .create_intent = xfs_extent_free_create_intent, |
578 | .abort_intent = xfs_extent_free_abort_intent, | |
81f40041 CH |
579 | .create_done = xfs_extent_free_create_done, |
580 | .finish_item = xfs_agfl_free_finish_item, | |
581 | .cancel_item = xfs_extent_free_cancel_item, | |
582 | }; | |
583 | ||
dc42375d DW |
584 | /* |
585 | * Process an extent free intent item that was recovered from | |
586 | * the log. We need to free the extents that it describes. | |
587 | */ | |
588 | int | |
589 | xfs_efi_recover( | |
590 | struct xfs_mount *mp, | |
591 | struct xfs_efi_log_item *efip) | |
592 | { | |
593 | struct xfs_efd_log_item *efdp; | |
594 | struct xfs_trans *tp; | |
595 | int i; | |
596 | int error = 0; | |
597 | xfs_extent_t *extp; | |
598 | xfs_fsblock_t startblock_fsb; | |
599 | ||
600 | ASSERT(!test_bit(XFS_EFI_RECOVERED, &efip->efi_flags)); | |
601 | ||
602 | /* | |
603 | * First check the validity of the extents described by the | |
604 | * EFI. If any are bad, then assume that all are bad and | |
605 | * just toss the EFI. | |
606 | */ | |
607 | for (i = 0; i < efip->efi_format.efi_nextents; i++) { | |
e127fafd | 608 | extp = &efip->efi_format.efi_extents[i]; |
dc42375d DW |
609 | startblock_fsb = XFS_BB_TO_FSB(mp, |
610 | XFS_FSB_TO_DADDR(mp, extp->ext_start)); | |
e127fafd DW |
611 | if (startblock_fsb == 0 || |
612 | extp->ext_len == 0 || | |
613 | startblock_fsb >= mp->m_sb.sb_dblocks || | |
614 | extp->ext_len >= mp->m_sb.sb_agblocks) { | |
dc42375d DW |
615 | /* |
616 | * This will pull the EFI from the AIL and | |
617 | * free the memory associated with it. | |
618 | */ | |
619 | set_bit(XFS_EFI_RECOVERED, &efip->efi_flags); | |
620 | xfs_efi_release(efip); | |
895e196f | 621 | return -EFSCORRUPTED; |
dc42375d DW |
622 | } |
623 | } | |
624 | ||
625 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp); | |
626 | if (error) | |
627 | return error; | |
628 | efdp = xfs_trans_get_efd(tp, efip, efip->efi_format.efi_nextents); | |
629 | ||
630 | for (i = 0; i < efip->efi_format.efi_nextents; i++) { | |
e127fafd | 631 | extp = &efip->efi_format.efi_extents[i]; |
dc42375d | 632 | error = xfs_trans_free_extent(tp, efdp, extp->ext_start, |
7280feda DW |
633 | extp->ext_len, |
634 | &XFS_RMAP_OINFO_ANY_OWNER, false); | |
dc42375d DW |
635 | if (error) |
636 | goto abort_error; | |
637 | ||
638 | } | |
639 | ||
640 | set_bit(XFS_EFI_RECOVERED, &efip->efi_flags); | |
641 | error = xfs_trans_commit(tp); | |
642 | return error; | |
643 | ||
644 | abort_error: | |
645 | xfs_trans_cancel(tp); | |
646 | return error; | |
647 | } | |
86ffa471 DW |
648 | |
649 | const struct xlog_recover_item_ops xlog_efi_item_ops = { | |
650 | .item_type = XFS_LI_EFI, | |
651 | }; | |
652 | ||
653 | const struct xlog_recover_item_ops xlog_efd_item_ops = { | |
654 | .item_type = XFS_LI_EFD, | |
655 | }; |