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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" |
08d3e84f | 14 | #include "xfs_ag.h" |
81f40041 | 15 | #include "xfs_defer.h" |
239880ef | 16 | #include "xfs_trans.h" |
1da177e4 LT |
17 | #include "xfs_trans_priv.h" |
18 | #include "xfs_extfree_item.h" | |
1234351c | 19 | #include "xfs_log.h" |
340785cc DW |
20 | #include "xfs_btree.h" |
21 | #include "xfs_rmap.h" | |
81f40041 CH |
22 | #include "xfs_alloc.h" |
23 | #include "xfs_bmap.h" | |
24 | #include "xfs_trace.h" | |
a5155b87 | 25 | #include "xfs_error.h" |
9817aa80 | 26 | #include "xfs_log_priv.h" |
86ffa471 | 27 | #include "xfs_log_recover.h" |
1da177e4 | 28 | |
182696fb DW |
29 | struct kmem_cache *xfs_efi_cache; |
30 | struct kmem_cache *xfs_efd_cache; | |
1da177e4 | 31 | |
10d0c6e0 DW |
32 | static const struct xfs_item_ops xfs_efi_item_ops; |
33 | ||
7bfa31d8 CH |
34 | static inline struct xfs_efi_log_item *EFI_ITEM(struct xfs_log_item *lip) |
35 | { | |
36 | return container_of(lip, struct xfs_efi_log_item, efi_item); | |
37 | } | |
1da177e4 | 38 | |
9817aa80 | 39 | STATIC void |
7bfa31d8 CH |
40 | xfs_efi_item_free( |
41 | struct xfs_efi_log_item *efip) | |
7d795ca3 | 42 | { |
49292576 | 43 | kvfree(efip->efi_item.li_lv_shadow); |
7bfa31d8 | 44 | if (efip->efi_format.efi_nextents > XFS_EFI_MAX_FAST_EXTENTS) |
d4c75a1b | 45 | kfree(efip); |
7bfa31d8 | 46 | else |
182696fb | 47 | kmem_cache_free(xfs_efi_cache, efip); |
7d795ca3 | 48 | } |
1da177e4 | 49 | |
0612d116 DC |
50 | /* |
51 | * Freeing the efi requires that we remove it from the AIL if it has already | |
52 | * been placed there. However, the EFI may not yet have been placed in the AIL | |
53 | * when called by xfs_efi_release() from EFD processing due to the ordering of | |
54 | * committed vs unpin operations in bulk insert operations. Hence the reference | |
55 | * count to ensure only the last caller frees the EFI. | |
56 | */ | |
10d0c6e0 | 57 | STATIC void |
0612d116 DC |
58 | xfs_efi_release( |
59 | struct xfs_efi_log_item *efip) | |
60 | { | |
61 | ASSERT(atomic_read(&efip->efi_refcount) > 0); | |
3512fc1e DC |
62 | if (!atomic_dec_and_test(&efip->efi_refcount)) |
63 | return; | |
64 | ||
65 | xfs_trans_ail_delete(&efip->efi_item, 0); | |
66 | xfs_efi_item_free(efip); | |
0612d116 DC |
67 | } |
68 | ||
166d1368 | 69 | STATIC void |
7bfa31d8 | 70 | xfs_efi_item_size( |
166d1368 DC |
71 | struct xfs_log_item *lip, |
72 | int *nvecs, | |
73 | int *nbytes) | |
1da177e4 | 74 | { |
3c5aaace DW |
75 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
76 | ||
166d1368 | 77 | *nvecs += 1; |
3c5aaace | 78 | *nbytes += xfs_efi_log_format_sizeof(efip->efi_format.efi_nextents); |
1da177e4 LT |
79 | } |
80 | ||
81 | /* | |
82 | * This is called to fill in the vector of log iovecs for the | |
83 | * given efi log item. We use only 1 iovec, and we point that | |
84 | * at the efi_log_format structure embedded in the efi item. | |
85 | * It is at this point that we assert that all of the extent | |
86 | * slots in the efi item have been filled. | |
87 | */ | |
88 | STATIC void | |
7bfa31d8 CH |
89 | xfs_efi_item_format( |
90 | struct xfs_log_item *lip, | |
bde7cff6 | 91 | struct xfs_log_vec *lv) |
1da177e4 | 92 | { |
7bfa31d8 | 93 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
bde7cff6 | 94 | struct xfs_log_iovec *vecp = NULL; |
1da177e4 | 95 | |
b199c8a4 DC |
96 | ASSERT(atomic_read(&efip->efi_next_extent) == |
97 | efip->efi_format.efi_nextents); | |
1da177e4 LT |
98 | |
99 | efip->efi_format.efi_type = XFS_LI_EFI; | |
1da177e4 LT |
100 | efip->efi_format.efi_size = 1; |
101 | ||
bde7cff6 | 102 | xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFI_FORMAT, |
1234351c | 103 | &efip->efi_format, |
3c5aaace | 104 | xfs_efi_log_format_sizeof(efip->efi_format.efi_nextents)); |
1da177e4 LT |
105 | } |
106 | ||
107 | ||
1da177e4 | 108 | /* |
8d99fe92 BF |
109 | * The unpin operation is the last place an EFI is manipulated in the log. It is |
110 | * either inserted in the AIL or aborted in the event of a log I/O error. In | |
111 | * either case, the EFI transaction has been successfully committed to make it | |
112 | * this far. Therefore, we expect whoever committed the EFI to either construct | |
113 | * and commit the EFD or drop the EFD's reference in the event of error. Simply | |
114 | * drop the log's EFI reference now that the log is done with it. | |
1da177e4 | 115 | */ |
1da177e4 | 116 | STATIC void |
7bfa31d8 CH |
117 | xfs_efi_item_unpin( |
118 | struct xfs_log_item *lip, | |
119 | int remove) | |
1da177e4 | 120 | { |
7bfa31d8 | 121 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
5e4b5386 | 122 | xfs_efi_release(efip); |
1da177e4 LT |
123 | } |
124 | ||
8d99fe92 BF |
125 | /* |
126 | * The EFI has been either committed or aborted if the transaction has been | |
127 | * cancelled. If the transaction was cancelled, an EFD isn't going to be | |
128 | * constructed and thus we free the EFI here directly. | |
129 | */ | |
1da177e4 | 130 | STATIC void |
ddf92053 | 131 | xfs_efi_item_release( |
7bfa31d8 | 132 | struct xfs_log_item *lip) |
1da177e4 | 133 | { |
ddf92053 | 134 | xfs_efi_release(EFI_ITEM(lip)); |
1da177e4 LT |
135 | } |
136 | ||
1da177e4 LT |
137 | /* |
138 | * Allocate and initialize an efi item with the given number of extents. | |
139 | */ | |
9817aa80 | 140 | STATIC struct xfs_efi_log_item * |
7bfa31d8 CH |
141 | xfs_efi_init( |
142 | struct xfs_mount *mp, | |
143 | uint nextents) | |
1da177e4 LT |
144 | |
145 | { | |
7bfa31d8 | 146 | struct xfs_efi_log_item *efip; |
1da177e4 LT |
147 | |
148 | ASSERT(nextents > 0); | |
149 | if (nextents > XFS_EFI_MAX_FAST_EXTENTS) { | |
3c5aaace DW |
150 | efip = kzalloc(xfs_efi_log_item_sizeof(nextents), |
151 | GFP_KERNEL | __GFP_NOFAIL); | |
1da177e4 | 152 | } else { |
182696fb | 153 | efip = kmem_cache_zalloc(xfs_efi_cache, |
32a2b11f | 154 | GFP_KERNEL | __GFP_NOFAIL); |
1da177e4 LT |
155 | } |
156 | ||
43f5efc5 | 157 | xfs_log_item_init(mp, &efip->efi_item, XFS_LI_EFI, &xfs_efi_item_ops); |
1da177e4 | 158 | efip->efi_format.efi_nextents = nextents; |
db9d67d6 | 159 | efip->efi_format.efi_id = (uintptr_t)(void *)efip; |
b199c8a4 | 160 | atomic_set(&efip->efi_next_extent, 0); |
666d644c | 161 | atomic_set(&efip->efi_refcount, 2); |
1da177e4 | 162 | |
7bfa31d8 | 163 | return efip; |
1da177e4 LT |
164 | } |
165 | ||
6d192a9b TS |
166 | /* |
167 | * Copy an EFI format buffer from the given buf, and into the destination | |
168 | * EFI format structure. | |
169 | * The given buffer can be in 32 bit or 64 bit form (which has different padding), | |
170 | * one of which will be the native format for this kernel. | |
171 | * It will handle the conversion of formats if necessary. | |
172 | */ | |
9817aa80 | 173 | STATIC int |
6d192a9b TS |
174 | xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt) |
175 | { | |
4e0d5f92 | 176 | xfs_efi_log_format_t *src_efi_fmt = buf->i_addr; |
6d192a9b | 177 | uint i; |
3c5aaace DW |
178 | uint len = xfs_efi_log_format_sizeof(src_efi_fmt->efi_nextents); |
179 | uint len32 = xfs_efi_log_format32_sizeof(src_efi_fmt->efi_nextents); | |
180 | uint len64 = xfs_efi_log_format64_sizeof(src_efi_fmt->efi_nextents); | |
6d192a9b TS |
181 | |
182 | if (buf->i_len == len) { | |
03a7485c DW |
183 | memcpy(dst_efi_fmt, src_efi_fmt, |
184 | offsetof(struct xfs_efi_log_format, efi_extents)); | |
185 | for (i = 0; i < src_efi_fmt->efi_nextents; i++) | |
186 | memcpy(&dst_efi_fmt->efi_extents[i], | |
187 | &src_efi_fmt->efi_extents[i], | |
188 | sizeof(struct xfs_extent)); | |
6d192a9b TS |
189 | return 0; |
190 | } else if (buf->i_len == len32) { | |
4e0d5f92 | 191 | xfs_efi_log_format_32_t *src_efi_fmt_32 = buf->i_addr; |
6d192a9b TS |
192 | |
193 | dst_efi_fmt->efi_type = src_efi_fmt_32->efi_type; | |
194 | dst_efi_fmt->efi_size = src_efi_fmt_32->efi_size; | |
195 | dst_efi_fmt->efi_nextents = src_efi_fmt_32->efi_nextents; | |
196 | dst_efi_fmt->efi_id = src_efi_fmt_32->efi_id; | |
197 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
198 | dst_efi_fmt->efi_extents[i].ext_start = | |
199 | src_efi_fmt_32->efi_extents[i].ext_start; | |
200 | dst_efi_fmt->efi_extents[i].ext_len = | |
201 | src_efi_fmt_32->efi_extents[i].ext_len; | |
202 | } | |
203 | return 0; | |
204 | } else if (buf->i_len == len64) { | |
4e0d5f92 | 205 | xfs_efi_log_format_64_t *src_efi_fmt_64 = buf->i_addr; |
6d192a9b TS |
206 | |
207 | dst_efi_fmt->efi_type = src_efi_fmt_64->efi_type; | |
208 | dst_efi_fmt->efi_size = src_efi_fmt_64->efi_size; | |
209 | dst_efi_fmt->efi_nextents = src_efi_fmt_64->efi_nextents; | |
210 | dst_efi_fmt->efi_id = src_efi_fmt_64->efi_id; | |
211 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
212 | dst_efi_fmt->efi_extents[i].ext_start = | |
213 | src_efi_fmt_64->efi_extents[i].ext_start; | |
214 | dst_efi_fmt->efi_extents[i].ext_len = | |
215 | src_efi_fmt_64->efi_extents[i].ext_len; | |
216 | } | |
217 | return 0; | |
218 | } | |
950f0d50 DW |
219 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, NULL, buf->i_addr, |
220 | buf->i_len); | |
2451337d | 221 | return -EFSCORRUPTED; |
6d192a9b TS |
222 | } |
223 | ||
7bfa31d8 | 224 | static inline struct xfs_efd_log_item *EFD_ITEM(struct xfs_log_item *lip) |
7d795ca3 | 225 | { |
7bfa31d8 CH |
226 | return container_of(lip, struct xfs_efd_log_item, efd_item); |
227 | } | |
1da177e4 | 228 | |
7bfa31d8 CH |
229 | STATIC void |
230 | xfs_efd_item_free(struct xfs_efd_log_item *efdp) | |
231 | { | |
49292576 | 232 | kvfree(efdp->efd_item.li_lv_shadow); |
7bfa31d8 | 233 | if (efdp->efd_format.efd_nextents > XFS_EFD_MAX_FAST_EXTENTS) |
d4c75a1b | 234 | kfree(efdp); |
7bfa31d8 | 235 | else |
182696fb | 236 | kmem_cache_free(xfs_efd_cache, efdp); |
7d795ca3 | 237 | } |
1da177e4 | 238 | |
166d1368 | 239 | STATIC void |
7bfa31d8 | 240 | xfs_efd_item_size( |
166d1368 DC |
241 | struct xfs_log_item *lip, |
242 | int *nvecs, | |
243 | int *nbytes) | |
1da177e4 | 244 | { |
3c5aaace DW |
245 | struct xfs_efd_log_item *efdp = EFD_ITEM(lip); |
246 | ||
166d1368 | 247 | *nvecs += 1; |
3c5aaace | 248 | *nbytes += xfs_efd_log_format_sizeof(efdp->efd_format.efd_nextents); |
1da177e4 LT |
249 | } |
250 | ||
251 | /* | |
252 | * This is called to fill in the vector of log iovecs for the | |
253 | * given efd log item. We use only 1 iovec, and we point that | |
254 | * at the efd_log_format structure embedded in the efd item. | |
255 | * It is at this point that we assert that all of the extent | |
256 | * slots in the efd item have been filled. | |
257 | */ | |
258 | STATIC void | |
7bfa31d8 CH |
259 | xfs_efd_item_format( |
260 | struct xfs_log_item *lip, | |
bde7cff6 | 261 | struct xfs_log_vec *lv) |
1da177e4 | 262 | { |
7bfa31d8 | 263 | struct xfs_efd_log_item *efdp = EFD_ITEM(lip); |
bde7cff6 | 264 | struct xfs_log_iovec *vecp = NULL; |
1da177e4 LT |
265 | |
266 | ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents); | |
267 | ||
268 | efdp->efd_format.efd_type = XFS_LI_EFD; | |
1da177e4 LT |
269 | efdp->efd_format.efd_size = 1; |
270 | ||
bde7cff6 | 271 | xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFD_FORMAT, |
1234351c | 272 | &efdp->efd_format, |
3c5aaace | 273 | xfs_efd_log_format_sizeof(efdp->efd_format.efd_nextents)); |
1da177e4 LT |
274 | } |
275 | ||
8d99fe92 BF |
276 | /* |
277 | * The EFD is either committed or aborted if the transaction is cancelled. If | |
278 | * the transaction is cancelled, drop our reference to the EFI and free the EFD. | |
279 | */ | |
1da177e4 | 280 | STATIC void |
ddf92053 | 281 | xfs_efd_item_release( |
7bfa31d8 | 282 | struct xfs_log_item *lip) |
1da177e4 | 283 | { |
8d99fe92 BF |
284 | struct xfs_efd_log_item *efdp = EFD_ITEM(lip); |
285 | ||
ddf92053 CH |
286 | xfs_efi_release(efdp->efd_efip); |
287 | xfs_efd_item_free(efdp); | |
1da177e4 LT |
288 | } |
289 | ||
c23ab603 DC |
290 | static struct xfs_log_item * |
291 | xfs_efd_item_intent( | |
292 | struct xfs_log_item *lip) | |
293 | { | |
294 | return &EFD_ITEM(lip)->efd_efip->efi_item; | |
295 | } | |
296 | ||
272e42b2 | 297 | static const struct xfs_item_ops xfs_efd_item_ops = { |
f5b81200 DC |
298 | .flags = XFS_ITEM_RELEASE_WHEN_COMMITTED | |
299 | XFS_ITEM_INTENT_DONE, | |
7bfa31d8 CH |
300 | .iop_size = xfs_efd_item_size, |
301 | .iop_format = xfs_efd_item_format, | |
ddf92053 | 302 | .iop_release = xfs_efd_item_release, |
c23ab603 | 303 | .iop_intent = xfs_efd_item_intent, |
1da177e4 LT |
304 | }; |
305 | ||
0853b5de DC |
306 | /* |
307 | * Fill the EFD with all extents from the EFI when we need to roll the | |
308 | * transaction and continue with a new EFI. | |
309 | * | |
310 | * This simply copies all the extents in the EFI to the EFD rather than make | |
311 | * assumptions about which extents in the EFI have already been processed. We | |
312 | * currently keep the xefi list in the same order as the EFI extent list, but | |
313 | * that may not always be the case. Copying everything avoids leaving a landmine | |
314 | * were we fail to cancel all the extents in an EFI if the xefi list is | |
315 | * processed in a different order to the extents in the EFI. | |
316 | */ | |
317 | static void | |
318 | xfs_efd_from_efi( | |
319 | struct xfs_efd_log_item *efdp) | |
320 | { | |
321 | struct xfs_efi_log_item *efip = efdp->efd_efip; | |
322 | uint i; | |
323 | ||
324 | ASSERT(efip->efi_format.efi_nextents > 0); | |
325 | ASSERT(efdp->efd_next_extent < efip->efi_format.efi_nextents); | |
326 | ||
327 | for (i = 0; i < efip->efi_format.efi_nextents; i++) { | |
328 | efdp->efd_format.efd_extents[i] = | |
329 | efip->efi_format.efi_extents[i]; | |
330 | } | |
331 | efdp->efd_next_extent = efip->efi_format.efi_nextents; | |
332 | } | |
333 | ||
81f40041 CH |
334 | /* Sort bmap items by AG. */ |
335 | static int | |
336 | xfs_extent_free_diff_items( | |
337 | void *priv, | |
4f0f586b ST |
338 | const struct list_head *a, |
339 | const struct list_head *b) | |
81f40041 | 340 | { |
81f40041 CH |
341 | struct xfs_extent_free_item *ra; |
342 | struct xfs_extent_free_item *rb; | |
343 | ||
344 | ra = container_of(a, struct xfs_extent_free_item, xefi_list); | |
345 | rb = container_of(b, struct xfs_extent_free_item, xefi_list); | |
f6b38463 DW |
346 | |
347 | return ra->xefi_pag->pag_agno - rb->xefi_pag->pag_agno; | |
81f40041 CH |
348 | } |
349 | ||
81f40041 CH |
350 | /* Log a free extent to the intent item. */ |
351 | STATIC void | |
352 | xfs_extent_free_log_item( | |
353 | struct xfs_trans *tp, | |
c1f09188 | 354 | struct xfs_efi_log_item *efip, |
578c714b | 355 | struct xfs_extent_free_item *xefi) |
81f40041 | 356 | { |
81f40041 CH |
357 | uint next_extent; |
358 | struct xfs_extent *extp; | |
359 | ||
81f40041 CH |
360 | /* |
361 | * atomic_inc_return gives us the value after the increment; | |
362 | * we want to use it as an array index so we need to subtract 1 from | |
363 | * it. | |
364 | */ | |
365 | next_extent = atomic_inc_return(&efip->efi_next_extent) - 1; | |
366 | ASSERT(next_extent < efip->efi_format.efi_nextents); | |
367 | extp = &efip->efi_format.efi_extents[next_extent]; | |
578c714b DW |
368 | extp->ext_start = xefi->xefi_startblock; |
369 | extp->ext_len = xefi->xefi_blockcount; | |
81f40041 CH |
370 | } |
371 | ||
13a83333 | 372 | static struct xfs_log_item * |
c1f09188 CH |
373 | xfs_extent_free_create_intent( |
374 | struct xfs_trans *tp, | |
375 | struct list_head *items, | |
d367a868 CH |
376 | unsigned int count, |
377 | bool sort) | |
c1f09188 CH |
378 | { |
379 | struct xfs_mount *mp = tp->t_mountp; | |
380 | struct xfs_efi_log_item *efip = xfs_efi_init(mp, count); | |
578c714b | 381 | struct xfs_extent_free_item *xefi; |
c1f09188 CH |
382 | |
383 | ASSERT(count > 0); | |
384 | ||
d367a868 CH |
385 | if (sort) |
386 | list_sort(mp, items, xfs_extent_free_diff_items); | |
578c714b DW |
387 | list_for_each_entry(xefi, items, xefi_list) |
388 | xfs_extent_free_log_item(tp, efip, xefi); | |
13a83333 | 389 | return &efip->efi_item; |
c1f09188 CH |
390 | } |
391 | ||
81f40041 | 392 | /* Get an EFD so we can process all the free extents. */ |
f09d167c | 393 | static struct xfs_log_item * |
81f40041 CH |
394 | xfs_extent_free_create_done( |
395 | struct xfs_trans *tp, | |
13a83333 | 396 | struct xfs_log_item *intent, |
81f40041 CH |
397 | unsigned int count) |
398 | { | |
8a9aa763 DW |
399 | struct xfs_efi_log_item *efip = EFI_ITEM(intent); |
400 | struct xfs_efd_log_item *efdp; | |
401 | ||
402 | ASSERT(count > 0); | |
403 | ||
404 | if (count > XFS_EFD_MAX_FAST_EXTENTS) { | |
405 | efdp = kzalloc(xfs_efd_log_item_sizeof(count), | |
406 | GFP_KERNEL | __GFP_NOFAIL); | |
407 | } else { | |
408 | efdp = kmem_cache_zalloc(xfs_efd_cache, | |
409 | GFP_KERNEL | __GFP_NOFAIL); | |
410 | } | |
411 | ||
412 | xfs_log_item_init(tp->t_mountp, &efdp->efd_item, XFS_LI_EFD, | |
413 | &xfs_efd_item_ops); | |
414 | efdp->efd_efip = efip; | |
415 | efdp->efd_format.efd_nextents = count; | |
416 | efdp->efd_format.efd_efi_id = efip->efi_format.efi_id; | |
417 | ||
418 | return &efdp->efd_item; | |
81f40041 CH |
419 | } |
420 | ||
f6b38463 DW |
421 | /* Take a passive ref to the AG containing the space we're freeing. */ |
422 | void | |
423 | xfs_extent_free_get_group( | |
424 | struct xfs_mount *mp, | |
425 | struct xfs_extent_free_item *xefi) | |
426 | { | |
427 | xfs_agnumber_t agno; | |
428 | ||
429 | agno = XFS_FSB_TO_AGNO(mp, xefi->xefi_startblock); | |
d5c88131 | 430 | xefi->xefi_pag = xfs_perag_intent_get(mp, agno); |
f6b38463 DW |
431 | } |
432 | ||
433 | /* Release a passive AG ref after some freeing work. */ | |
434 | static inline void | |
435 | xfs_extent_free_put_group( | |
436 | struct xfs_extent_free_item *xefi) | |
437 | { | |
d5c88131 | 438 | xfs_perag_intent_put(xefi->xefi_pag); |
f6b38463 DW |
439 | } |
440 | ||
81f40041 CH |
441 | /* Process a free extent. */ |
442 | STATIC int | |
443 | xfs_extent_free_finish_item( | |
444 | struct xfs_trans *tp, | |
f09d167c | 445 | struct xfs_log_item *done, |
81f40041 | 446 | struct list_head *item, |
3ec1b26c | 447 | struct xfs_btree_cur **state) |
81f40041 | 448 | { |
e6e5299f | 449 | struct xfs_owner_info oinfo = { }; |
578c714b | 450 | struct xfs_extent_free_item *xefi; |
e6e5299f DW |
451 | struct xfs_efd_log_item *efdp = EFD_ITEM(done); |
452 | struct xfs_mount *mp = tp->t_mountp; | |
453 | struct xfs_extent *extp; | |
454 | uint next_extent; | |
455 | xfs_agblock_t agbno; | |
e3042be3 | 456 | int error = 0; |
81f40041 | 457 | |
578c714b | 458 | xefi = container_of(item, struct xfs_extent_free_item, xefi_list); |
e6e5299f | 459 | agbno = XFS_FSB_TO_AGBNO(mp, xefi->xefi_startblock); |
72ba4555 | 460 | |
e6e5299f DW |
461 | oinfo.oi_owner = xefi->xefi_owner; |
462 | if (xefi->xefi_flags & XFS_EFI_ATTR_FORK) | |
463 | oinfo.oi_flags |= XFS_OWNER_INFO_ATTR_FORK; | |
464 | if (xefi->xefi_flags & XFS_EFI_BMBT_BLOCK) | |
465 | oinfo.oi_flags |= XFS_OWNER_INFO_BMBT_BLOCK; | |
466 | ||
467 | trace_xfs_bmap_free_deferred(tp->t_mountp, xefi->xefi_pag->pag_agno, 0, | |
468 | agbno, xefi->xefi_blockcount); | |
f6b38463 | 469 | |
0853b5de | 470 | /* |
e6e5299f DW |
471 | * If we need a new transaction to make progress, the caller will log a |
472 | * new EFI with the current contents. It will also log an EFD to cancel | |
473 | * the existing EFI, and so we need to copy all the unprocessed extents | |
474 | * in this EFI to the EFD so this works correctly. | |
0853b5de | 475 | */ |
e3042be3 DW |
476 | if (!(xefi->xefi_flags & XFS_EFI_CANCELLED)) |
477 | error = __xfs_free_extent(tp, xefi->xefi_pag, agbno, | |
478 | xefi->xefi_blockcount, &oinfo, xefi->xefi_agresv, | |
479 | xefi->xefi_flags & XFS_EFI_SKIP_DISCARD); | |
e6e5299f DW |
480 | if (error == -EAGAIN) { |
481 | xfs_efd_from_efi(efdp); | |
0853b5de | 482 | return error; |
e6e5299f DW |
483 | } |
484 | ||
485 | /* Add the work we finished to the EFD, even though nobody uses that */ | |
486 | next_extent = efdp->efd_next_extent; | |
487 | ASSERT(next_extent < efdp->efd_format.efd_nextents); | |
488 | extp = &(efdp->efd_format.efd_extents[next_extent]); | |
489 | extp->ext_start = xefi->xefi_startblock; | |
490 | extp->ext_len = xefi->xefi_blockcount; | |
491 | efdp->efd_next_extent++; | |
0853b5de | 492 | |
f6b38463 | 493 | xfs_extent_free_put_group(xefi); |
578c714b | 494 | kmem_cache_free(xfs_extfree_item_cache, xefi); |
81f40041 CH |
495 | return error; |
496 | } | |
497 | ||
498 | /* Abort all pending EFIs. */ | |
499 | STATIC void | |
500 | xfs_extent_free_abort_intent( | |
13a83333 | 501 | struct xfs_log_item *intent) |
81f40041 | 502 | { |
13a83333 | 503 | xfs_efi_release(EFI_ITEM(intent)); |
81f40041 CH |
504 | } |
505 | ||
506 | /* Cancel a free extent. */ | |
507 | STATIC void | |
508 | xfs_extent_free_cancel_item( | |
509 | struct list_head *item) | |
510 | { | |
578c714b | 511 | struct xfs_extent_free_item *xefi; |
81f40041 | 512 | |
578c714b | 513 | xefi = container_of(item, struct xfs_extent_free_item, xefi_list); |
f6b38463 DW |
514 | |
515 | xfs_extent_free_put_group(xefi); | |
578c714b | 516 | kmem_cache_free(xfs_extfree_item_cache, xefi); |
81f40041 CH |
517 | } |
518 | ||
81f40041 CH |
519 | /* |
520 | * AGFL blocks are accounted differently in the reserve pools and are not | |
521 | * inserted into the busy extent list. | |
522 | */ | |
523 | STATIC int | |
524 | xfs_agfl_free_finish_item( | |
525 | struct xfs_trans *tp, | |
f09d167c | 526 | struct xfs_log_item *done, |
81f40041 | 527 | struct list_head *item, |
3ec1b26c | 528 | struct xfs_btree_cur **state) |
81f40041 | 529 | { |
b3b5ff41 | 530 | struct xfs_owner_info oinfo = { }; |
81f40041 | 531 | struct xfs_mount *mp = tp->t_mountp; |
f09d167c | 532 | struct xfs_efd_log_item *efdp = EFD_ITEM(done); |
578c714b | 533 | struct xfs_extent_free_item *xefi; |
81f40041 CH |
534 | struct xfs_extent *extp; |
535 | struct xfs_buf *agbp; | |
536 | int error; | |
81f40041 CH |
537 | xfs_agblock_t agbno; |
538 | uint next_extent; | |
539 | ||
578c714b DW |
540 | xefi = container_of(item, struct xfs_extent_free_item, xefi_list); |
541 | ASSERT(xefi->xefi_blockcount == 1); | |
578c714b DW |
542 | agbno = XFS_FSB_TO_AGBNO(mp, xefi->xefi_startblock); |
543 | oinfo.oi_owner = xefi->xefi_owner; | |
81f40041 | 544 | |
f6b38463 DW |
545 | trace_xfs_agfl_free_deferred(mp, xefi->xefi_pag->pag_agno, 0, agbno, |
546 | xefi->xefi_blockcount); | |
81f40041 | 547 | |
f6b38463 | 548 | error = xfs_alloc_read_agf(xefi->xefi_pag, tp, 0, &agbp); |
81f40041 | 549 | if (!error) |
f6b38463 DW |
550 | error = xfs_free_agfl_block(tp, xefi->xefi_pag->pag_agno, |
551 | agbno, agbp, &oinfo); | |
81f40041 | 552 | |
81f40041 CH |
553 | next_extent = efdp->efd_next_extent; |
554 | ASSERT(next_extent < efdp->efd_format.efd_nextents); | |
555 | extp = &(efdp->efd_format.efd_extents[next_extent]); | |
578c714b DW |
556 | extp->ext_start = xefi->xefi_startblock; |
557 | extp->ext_len = xefi->xefi_blockcount; | |
81f40041 CH |
558 | efdp->efd_next_extent++; |
559 | ||
f6b38463 | 560 | xfs_extent_free_put_group(xefi); |
578c714b | 561 | kmem_cache_free(xfs_extfree_item_cache, xefi); |
81f40041 CH |
562 | return error; |
563 | } | |
564 | ||
3c15df3d DW |
565 | /* Is this recovered EFI ok? */ |
566 | static inline bool | |
567 | xfs_efi_validate_ext( | |
568 | struct xfs_mount *mp, | |
569 | struct xfs_extent *extp) | |
570 | { | |
67457eb0 | 571 | return xfs_verify_fsbext(mp, extp->ext_start, extp->ext_len); |
3c15df3d DW |
572 | } |
573 | ||
e70fb328 DW |
574 | static inline void |
575 | xfs_efi_recover_work( | |
576 | struct xfs_mount *mp, | |
577 | struct xfs_defer_pending *dfp, | |
578 | struct xfs_extent *extp) | |
579 | { | |
580 | struct xfs_extent_free_item *xefi; | |
581 | ||
582 | xefi = kmem_cache_zalloc(xfs_extfree_item_cache, | |
583 | GFP_KERNEL | __GFP_NOFAIL); | |
584 | xefi->xefi_startblock = extp->ext_start; | |
585 | xefi->xefi_blockcount = extp->ext_len; | |
586 | xefi->xefi_agresv = XFS_AG_RESV_NONE; | |
587 | xefi->xefi_owner = XFS_RMAP_OWN_UNKNOWN; | |
e5f1a514 | 588 | xfs_extent_free_get_group(mp, xefi); |
e70fb328 DW |
589 | |
590 | xfs_defer_add_item(dfp, &xefi->xefi_list); | |
591 | } | |
592 | ||
dc42375d DW |
593 | /* |
594 | * Process an extent free intent item that was recovered from | |
595 | * the log. We need to free the extents that it describes. | |
596 | */ | |
10d0c6e0 | 597 | STATIC int |
db7ccc0b | 598 | xfs_extent_free_recover_work( |
a050acdf | 599 | struct xfs_defer_pending *dfp, |
e6fff81e | 600 | struct list_head *capture_list) |
dc42375d | 601 | { |
3c919b09 | 602 | struct xfs_trans_res resv; |
a050acdf | 603 | struct xfs_log_item *lip = dfp->dfp_intent; |
96b60f82 | 604 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
d86142dd | 605 | struct xfs_mount *mp = lip->li_log->l_mp; |
96b60f82 | 606 | struct xfs_trans *tp; |
96b60f82 DW |
607 | int i; |
608 | int error = 0; | |
dc42375d | 609 | |
dc42375d DW |
610 | /* |
611 | * First check the validity of the extents described by the | |
612 | * EFI. If any are bad, then assume that all are bad and | |
613 | * just toss the EFI. | |
614 | */ | |
615 | for (i = 0; i < efip->efi_format.efi_nextents; i++) { | |
3c15df3d DW |
616 | if (!xfs_efi_validate_ext(mp, |
617 | &efip->efi_format.efi_extents[i])) { | |
618 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, | |
619 | &efip->efi_format, | |
620 | sizeof(efip->efi_format)); | |
895e196f | 621 | return -EFSCORRUPTED; |
3c15df3d | 622 | } |
e70fb328 DW |
623 | |
624 | xfs_efi_recover_work(mp, dfp, &efip->efi_format.efi_extents[i]); | |
dc42375d DW |
625 | } |
626 | ||
3c919b09 DW |
627 | resv = xlog_recover_resv(&M_RES(mp)->tr_itruncate); |
628 | error = xfs_trans_alloc(mp, &resv, 0, 0, 0, &tp); | |
dc42375d DW |
629 | if (error) |
630 | return error; | |
deb4cd8b | 631 | |
e5f1a514 DW |
632 | error = xlog_recover_finish_intent(tp, dfp); |
633 | if (error == -EFSCORRUPTED) | |
634 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, | |
635 | &efip->efi_format, | |
636 | sizeof(efip->efi_format)); | |
637 | if (error) | |
638 | goto abort_error; | |
dc42375d | 639 | |
512edfac | 640 | return xfs_defer_ops_capture_and_commit(tp, capture_list); |
dc42375d DW |
641 | |
642 | abort_error: | |
643 | xfs_trans_cancel(tp); | |
644 | return error; | |
645 | } | |
86ffa471 | 646 | |
a49c708f DW |
647 | /* Relog an intent item to push the log tail forward. */ |
648 | static struct xfs_log_item * | |
649 | xfs_extent_free_relog_intent( | |
650 | struct xfs_trans *tp, | |
651 | struct xfs_log_item *intent, | |
652 | struct xfs_log_item *done_item) | |
653 | { | |
654 | struct xfs_efd_log_item *efdp = EFD_ITEM(done_item); | |
655 | struct xfs_efi_log_item *efip; | |
656 | struct xfs_extent *extp; | |
657 | unsigned int count; | |
658 | ||
659 | count = EFI_ITEM(intent)->efi_format.efi_nextents; | |
660 | extp = EFI_ITEM(intent)->efi_format.efi_extents; | |
661 | ||
662 | efdp->efd_next_extent = count; | |
663 | memcpy(efdp->efd_format.efd_extents, extp, count * sizeof(*extp)); | |
664 | ||
665 | efip = xfs_efi_init(tp->t_mountp, count); | |
666 | memcpy(efip->efi_format.efi_extents, extp, count * sizeof(*extp)); | |
667 | atomic_set(&efip->efi_next_extent, count); | |
668 | ||
669 | return &efip->efi_item; | |
670 | } | |
671 | ||
db7ccc0b | 672 | const struct xfs_defer_op_type xfs_extent_free_defer_type = { |
7f2f7531 | 673 | .name = "extent_free", |
db7ccc0b DW |
674 | .max_items = XFS_EFI_MAX_FAST_EXTENTS, |
675 | .create_intent = xfs_extent_free_create_intent, | |
676 | .abort_intent = xfs_extent_free_abort_intent, | |
677 | .create_done = xfs_extent_free_create_done, | |
678 | .finish_item = xfs_extent_free_finish_item, | |
679 | .cancel_item = xfs_extent_free_cancel_item, | |
680 | .recover_work = xfs_extent_free_recover_work, | |
a49c708f | 681 | .relog_intent = xfs_extent_free_relog_intent, |
db7ccc0b DW |
682 | }; |
683 | ||
684 | /* sub-type with special handling for AGFL deferred frees */ | |
685 | const struct xfs_defer_op_type xfs_agfl_free_defer_type = { | |
7f2f7531 | 686 | .name = "agfl_free", |
db7ccc0b DW |
687 | .max_items = XFS_EFI_MAX_FAST_EXTENTS, |
688 | .create_intent = xfs_extent_free_create_intent, | |
689 | .abort_intent = xfs_extent_free_abort_intent, | |
690 | .create_done = xfs_extent_free_create_done, | |
691 | .finish_item = xfs_agfl_free_finish_item, | |
692 | .cancel_item = xfs_extent_free_cancel_item, | |
693 | .recover_work = xfs_extent_free_recover_work, | |
a49c708f | 694 | .relog_intent = xfs_extent_free_relog_intent, |
db7ccc0b DW |
695 | }; |
696 | ||
154c733a DW |
697 | STATIC bool |
698 | xfs_efi_item_match( | |
699 | struct xfs_log_item *lip, | |
700 | uint64_t intent_id) | |
701 | { | |
702 | return EFI_ITEM(lip)->efi_format.efi_id == intent_id; | |
703 | } | |
704 | ||
10d0c6e0 | 705 | static const struct xfs_item_ops xfs_efi_item_ops = { |
f5b81200 | 706 | .flags = XFS_ITEM_INTENT, |
10d0c6e0 DW |
707 | .iop_size = xfs_efi_item_size, |
708 | .iop_format = xfs_efi_item_format, | |
709 | .iop_unpin = xfs_efi_item_unpin, | |
710 | .iop_release = xfs_efi_item_release, | |
154c733a | 711 | .iop_match = xfs_efi_item_match, |
10d0c6e0 DW |
712 | }; |
713 | ||
9817aa80 DW |
714 | /* |
715 | * This routine is called to create an in-core extent free intent | |
716 | * item from the efi format structure which was logged on disk. | |
717 | * It allocates an in-core efi, copies the extents from the format | |
718 | * structure into it, and adds the efi to the AIL with the given | |
719 | * LSN. | |
720 | */ | |
721 | STATIC int | |
722 | xlog_recover_efi_commit_pass2( | |
723 | struct xlog *log, | |
724 | struct list_head *buffer_list, | |
725 | struct xlog_recover_item *item, | |
726 | xfs_lsn_t lsn) | |
727 | { | |
728 | struct xfs_mount *mp = log->l_mp; | |
729 | struct xfs_efi_log_item *efip; | |
730 | struct xfs_efi_log_format *efi_formatp; | |
731 | int error; | |
732 | ||
733 | efi_formatp = item->ri_buf[0].i_addr; | |
734 | ||
3c5aaace | 735 | if (item->ri_buf[0].i_len < xfs_efi_log_format_sizeof(0)) { |
950f0d50 DW |
736 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, |
737 | item->ri_buf[0].i_addr, item->ri_buf[0].i_len); | |
03a7485c DW |
738 | return -EFSCORRUPTED; |
739 | } | |
740 | ||
9817aa80 DW |
741 | efip = xfs_efi_init(mp, efi_formatp->efi_nextents); |
742 | error = xfs_efi_copy_format(&item->ri_buf[0], &efip->efi_format); | |
743 | if (error) { | |
744 | xfs_efi_item_free(efip); | |
745 | return error; | |
746 | } | |
747 | atomic_set(&efip->efi_next_extent, efi_formatp->efi_nextents); | |
03f7767c DW |
748 | |
749 | xlog_recover_intent_item(log, &efip->efi_item, lsn, | |
dc22af64 | 750 | &xfs_extent_free_defer_type); |
9817aa80 DW |
751 | return 0; |
752 | } | |
753 | ||
86ffa471 DW |
754 | const struct xlog_recover_item_ops xlog_efi_item_ops = { |
755 | .item_type = XFS_LI_EFI, | |
9817aa80 | 756 | .commit_pass2 = xlog_recover_efi_commit_pass2, |
86ffa471 DW |
757 | }; |
758 | ||
9817aa80 DW |
759 | /* |
760 | * This routine is called when an EFD format structure is found in a committed | |
761 | * transaction in the log. Its purpose is to cancel the corresponding EFI if it | |
762 | * was still in the log. To do this it searches the AIL for the EFI with an id | |
763 | * equal to that in the EFD format structure. If we find it we drop the EFD | |
764 | * reference, which removes the EFI from the AIL and frees it. | |
765 | */ | |
766 | STATIC int | |
767 | xlog_recover_efd_commit_pass2( | |
768 | struct xlog *log, | |
769 | struct list_head *buffer_list, | |
770 | struct xlog_recover_item *item, | |
771 | xfs_lsn_t lsn) | |
772 | { | |
9817aa80 | 773 | struct xfs_efd_log_format *efd_formatp; |
921ed96b | 774 | int buflen = item->ri_buf[0].i_len; |
9817aa80 DW |
775 | |
776 | efd_formatp = item->ri_buf[0].i_addr; | |
921ed96b DW |
777 | |
778 | if (buflen < sizeof(struct xfs_efd_log_format)) { | |
779 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp, | |
780 | efd_formatp, buflen); | |
781 | return -EFSCORRUPTED; | |
782 | } | |
783 | ||
784 | if (item->ri_buf[0].i_len != xfs_efd_log_format32_sizeof( | |
785 | efd_formatp->efd_nextents) && | |
786 | item->ri_buf[0].i_len != xfs_efd_log_format64_sizeof( | |
787 | efd_formatp->efd_nextents)) { | |
788 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp, | |
789 | efd_formatp, buflen); | |
790 | return -EFSCORRUPTED; | |
791 | } | |
9817aa80 | 792 | |
154c733a | 793 | xlog_recover_release_intent(log, XFS_LI_EFI, efd_formatp->efd_efi_id); |
9817aa80 DW |
794 | return 0; |
795 | } | |
796 | ||
86ffa471 DW |
797 | const struct xlog_recover_item_ops xlog_efd_item_ops = { |
798 | .item_type = XFS_LI_EFD, | |
9817aa80 | 799 | .commit_pass2 = xlog_recover_efd_commit_pass2, |
86ffa471 | 800 | }; |