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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 | { |
b1c5ebb2 | 43 | kmem_free(efip->efi_item.li_lv_shadow); |
7bfa31d8 | 44 | if (efip->efi_format.efi_nextents > XFS_EFI_MAX_FAST_EXTENTS) |
f0e2d93c | 45 | kmem_free(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 | { | |
b1c5ebb2 | 232 | kmem_free(efdp->efd_item.li_lv_shadow); |
7bfa31d8 | 233 | if (efdp->efd_format.efd_nextents > XFS_EFD_MAX_FAST_EXTENTS) |
f0e2d93c | 234 | kmem_free(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 | ||
1da177e4 | 306 | /* |
9c5e7c2a CH |
307 | * Allocate an "extent free done" log item that will hold nextents worth of |
308 | * extents. The caller must use all nextents extents, because we are not | |
309 | * flexible about this at all. | |
1da177e4 | 310 | */ |
81f40041 | 311 | static struct xfs_efd_log_item * |
9c5e7c2a CH |
312 | xfs_trans_get_efd( |
313 | struct xfs_trans *tp, | |
314 | struct xfs_efi_log_item *efip, | |
315 | unsigned int nextents) | |
1da177e4 | 316 | { |
9c5e7c2a | 317 | struct xfs_efd_log_item *efdp; |
1da177e4 LT |
318 | |
319 | ASSERT(nextents > 0); | |
9c5e7c2a | 320 | |
1da177e4 | 321 | if (nextents > XFS_EFD_MAX_FAST_EXTENTS) { |
3c5aaace DW |
322 | efdp = kzalloc(xfs_efd_log_item_sizeof(nextents), |
323 | GFP_KERNEL | __GFP_NOFAIL); | |
1da177e4 | 324 | } else { |
182696fb | 325 | efdp = kmem_cache_zalloc(xfs_efd_cache, |
32a2b11f | 326 | GFP_KERNEL | __GFP_NOFAIL); |
1da177e4 LT |
327 | } |
328 | ||
9c5e7c2a CH |
329 | xfs_log_item_init(tp->t_mountp, &efdp->efd_item, XFS_LI_EFD, |
330 | &xfs_efd_item_ops); | |
1da177e4 LT |
331 | efdp->efd_efip = efip; |
332 | efdp->efd_format.efd_nextents = nextents; | |
333 | efdp->efd_format.efd_efi_id = efip->efi_format.efi_id; | |
334 | ||
9c5e7c2a | 335 | xfs_trans_add_item(tp, &efdp->efd_item); |
7bfa31d8 | 336 | return efdp; |
1da177e4 | 337 | } |
dc42375d | 338 | |
81f40041 CH |
339 | /* |
340 | * Free an extent and log it to the EFD. Note that the transaction is marked | |
341 | * dirty regardless of whether the extent free succeeds or fails to support the | |
342 | * EFI/EFD lifecycle rules. | |
343 | */ | |
344 | static int | |
345 | xfs_trans_free_extent( | |
346 | struct xfs_trans *tp, | |
347 | struct xfs_efd_log_item *efdp, | |
578c714b | 348 | struct xfs_extent_free_item *xefi) |
81f40041 | 349 | { |
72ba4555 | 350 | struct xfs_owner_info oinfo = { }; |
81f40041 CH |
351 | struct xfs_mount *mp = tp->t_mountp; |
352 | struct xfs_extent *extp; | |
353 | uint next_extent; | |
81f40041 | 354 | xfs_agblock_t agbno = XFS_FSB_TO_AGBNO(mp, |
578c714b | 355 | xefi->xefi_startblock); |
81f40041 CH |
356 | int error; |
357 | ||
578c714b DW |
358 | oinfo.oi_owner = xefi->xefi_owner; |
359 | if (xefi->xefi_flags & XFS_EFI_ATTR_FORK) | |
72ba4555 | 360 | oinfo.oi_flags |= XFS_OWNER_INFO_ATTR_FORK; |
578c714b | 361 | if (xefi->xefi_flags & XFS_EFI_BMBT_BLOCK) |
72ba4555 DW |
362 | oinfo.oi_flags |= XFS_OWNER_INFO_BMBT_BLOCK; |
363 | ||
f6b38463 DW |
364 | trace_xfs_bmap_free_deferred(tp->t_mountp, xefi->xefi_pag->pag_agno, 0, |
365 | agbno, xefi->xefi_blockcount); | |
81f40041 | 366 | |
f6b38463 DW |
367 | error = __xfs_free_extent(tp, xefi->xefi_pag, agbno, |
368 | xefi->xefi_blockcount, &oinfo, XFS_AG_RESV_NONE, | |
578c714b | 369 | xefi->xefi_flags & XFS_EFI_SKIP_DISCARD); |
b2ccab31 | 370 | |
81f40041 CH |
371 | /* |
372 | * Mark the transaction dirty, even on error. This ensures the | |
373 | * transaction is aborted, which: | |
374 | * | |
375 | * 1.) releases the EFI and frees the EFD | |
376 | * 2.) shuts down the filesystem | |
377 | */ | |
bb7b1c9c | 378 | tp->t_flags |= XFS_TRANS_DIRTY | XFS_TRANS_HAS_INTENT_DONE; |
81f40041 CH |
379 | set_bit(XFS_LI_DIRTY, &efdp->efd_item.li_flags); |
380 | ||
381 | next_extent = efdp->efd_next_extent; | |
382 | ASSERT(next_extent < efdp->efd_format.efd_nextents); | |
383 | extp = &(efdp->efd_format.efd_extents[next_extent]); | |
578c714b DW |
384 | extp->ext_start = xefi->xefi_startblock; |
385 | extp->ext_len = xefi->xefi_blockcount; | |
81f40041 CH |
386 | efdp->efd_next_extent++; |
387 | ||
388 | return error; | |
389 | } | |
390 | ||
391 | /* Sort bmap items by AG. */ | |
392 | static int | |
393 | xfs_extent_free_diff_items( | |
394 | void *priv, | |
4f0f586b ST |
395 | const struct list_head *a, |
396 | const struct list_head *b) | |
81f40041 | 397 | { |
81f40041 CH |
398 | struct xfs_extent_free_item *ra; |
399 | struct xfs_extent_free_item *rb; | |
400 | ||
401 | ra = container_of(a, struct xfs_extent_free_item, xefi_list); | |
402 | rb = container_of(b, struct xfs_extent_free_item, xefi_list); | |
f6b38463 DW |
403 | |
404 | return ra->xefi_pag->pag_agno - rb->xefi_pag->pag_agno; | |
81f40041 CH |
405 | } |
406 | ||
81f40041 CH |
407 | /* Log a free extent to the intent item. */ |
408 | STATIC void | |
409 | xfs_extent_free_log_item( | |
410 | struct xfs_trans *tp, | |
c1f09188 | 411 | struct xfs_efi_log_item *efip, |
578c714b | 412 | struct xfs_extent_free_item *xefi) |
81f40041 | 413 | { |
81f40041 CH |
414 | uint next_extent; |
415 | struct xfs_extent *extp; | |
416 | ||
81f40041 CH |
417 | tp->t_flags |= XFS_TRANS_DIRTY; |
418 | set_bit(XFS_LI_DIRTY, &efip->efi_item.li_flags); | |
419 | ||
420 | /* | |
421 | * atomic_inc_return gives us the value after the increment; | |
422 | * we want to use it as an array index so we need to subtract 1 from | |
423 | * it. | |
424 | */ | |
425 | next_extent = atomic_inc_return(&efip->efi_next_extent) - 1; | |
426 | ASSERT(next_extent < efip->efi_format.efi_nextents); | |
427 | extp = &efip->efi_format.efi_extents[next_extent]; | |
578c714b DW |
428 | extp->ext_start = xefi->xefi_startblock; |
429 | extp->ext_len = xefi->xefi_blockcount; | |
81f40041 CH |
430 | } |
431 | ||
13a83333 | 432 | static struct xfs_log_item * |
c1f09188 CH |
433 | xfs_extent_free_create_intent( |
434 | struct xfs_trans *tp, | |
435 | struct list_head *items, | |
d367a868 CH |
436 | unsigned int count, |
437 | bool sort) | |
c1f09188 CH |
438 | { |
439 | struct xfs_mount *mp = tp->t_mountp; | |
440 | struct xfs_efi_log_item *efip = xfs_efi_init(mp, count); | |
578c714b | 441 | struct xfs_extent_free_item *xefi; |
c1f09188 CH |
442 | |
443 | ASSERT(count > 0); | |
444 | ||
445 | xfs_trans_add_item(tp, &efip->efi_item); | |
d367a868 CH |
446 | if (sort) |
447 | list_sort(mp, items, xfs_extent_free_diff_items); | |
578c714b DW |
448 | list_for_each_entry(xefi, items, xefi_list) |
449 | xfs_extent_free_log_item(tp, efip, xefi); | |
13a83333 | 450 | return &efip->efi_item; |
c1f09188 CH |
451 | } |
452 | ||
81f40041 | 453 | /* Get an EFD so we can process all the free extents. */ |
f09d167c | 454 | static struct xfs_log_item * |
81f40041 CH |
455 | xfs_extent_free_create_done( |
456 | struct xfs_trans *tp, | |
13a83333 | 457 | struct xfs_log_item *intent, |
81f40041 CH |
458 | unsigned int count) |
459 | { | |
f09d167c | 460 | return &xfs_trans_get_efd(tp, EFI_ITEM(intent), count)->efd_item; |
81f40041 CH |
461 | } |
462 | ||
f6b38463 DW |
463 | /* Take a passive ref to the AG containing the space we're freeing. */ |
464 | void | |
465 | xfs_extent_free_get_group( | |
466 | struct xfs_mount *mp, | |
467 | struct xfs_extent_free_item *xefi) | |
468 | { | |
469 | xfs_agnumber_t agno; | |
470 | ||
471 | agno = XFS_FSB_TO_AGNO(mp, xefi->xefi_startblock); | |
d5c88131 | 472 | xefi->xefi_pag = xfs_perag_intent_get(mp, agno); |
f6b38463 DW |
473 | } |
474 | ||
475 | /* Release a passive AG ref after some freeing work. */ | |
476 | static inline void | |
477 | xfs_extent_free_put_group( | |
478 | struct xfs_extent_free_item *xefi) | |
479 | { | |
d5c88131 | 480 | xfs_perag_intent_put(xefi->xefi_pag); |
f6b38463 DW |
481 | } |
482 | ||
81f40041 CH |
483 | /* Process a free extent. */ |
484 | STATIC int | |
485 | xfs_extent_free_finish_item( | |
486 | struct xfs_trans *tp, | |
f09d167c | 487 | struct xfs_log_item *done, |
81f40041 | 488 | struct list_head *item, |
3ec1b26c | 489 | struct xfs_btree_cur **state) |
81f40041 | 490 | { |
578c714b | 491 | struct xfs_extent_free_item *xefi; |
81f40041 CH |
492 | int error; |
493 | ||
578c714b | 494 | xefi = container_of(item, struct xfs_extent_free_item, xefi_list); |
72ba4555 | 495 | |
578c714b | 496 | error = xfs_trans_free_extent(tp, EFD_ITEM(done), xefi); |
f6b38463 DW |
497 | |
498 | xfs_extent_free_put_group(xefi); | |
578c714b | 499 | kmem_cache_free(xfs_extfree_item_cache, xefi); |
81f40041 CH |
500 | return error; |
501 | } | |
502 | ||
503 | /* Abort all pending EFIs. */ | |
504 | STATIC void | |
505 | xfs_extent_free_abort_intent( | |
13a83333 | 506 | struct xfs_log_item *intent) |
81f40041 | 507 | { |
13a83333 | 508 | xfs_efi_release(EFI_ITEM(intent)); |
81f40041 CH |
509 | } |
510 | ||
511 | /* Cancel a free extent. */ | |
512 | STATIC void | |
513 | xfs_extent_free_cancel_item( | |
514 | struct list_head *item) | |
515 | { | |
578c714b | 516 | struct xfs_extent_free_item *xefi; |
81f40041 | 517 | |
578c714b | 518 | xefi = container_of(item, struct xfs_extent_free_item, xefi_list); |
f6b38463 DW |
519 | |
520 | xfs_extent_free_put_group(xefi); | |
578c714b | 521 | kmem_cache_free(xfs_extfree_item_cache, xefi); |
81f40041 CH |
522 | } |
523 | ||
524 | const struct xfs_defer_op_type xfs_extent_free_defer_type = { | |
525 | .max_items = XFS_EFI_MAX_FAST_EXTENTS, | |
81f40041 CH |
526 | .create_intent = xfs_extent_free_create_intent, |
527 | .abort_intent = xfs_extent_free_abort_intent, | |
81f40041 CH |
528 | .create_done = xfs_extent_free_create_done, |
529 | .finish_item = xfs_extent_free_finish_item, | |
530 | .cancel_item = xfs_extent_free_cancel_item, | |
531 | }; | |
532 | ||
533 | /* | |
534 | * AGFL blocks are accounted differently in the reserve pools and are not | |
535 | * inserted into the busy extent list. | |
536 | */ | |
537 | STATIC int | |
538 | xfs_agfl_free_finish_item( | |
539 | struct xfs_trans *tp, | |
f09d167c | 540 | struct xfs_log_item *done, |
81f40041 | 541 | struct list_head *item, |
3ec1b26c | 542 | struct xfs_btree_cur **state) |
81f40041 | 543 | { |
b3b5ff41 | 544 | struct xfs_owner_info oinfo = { }; |
81f40041 | 545 | struct xfs_mount *mp = tp->t_mountp; |
f09d167c | 546 | struct xfs_efd_log_item *efdp = EFD_ITEM(done); |
578c714b | 547 | struct xfs_extent_free_item *xefi; |
81f40041 CH |
548 | struct xfs_extent *extp; |
549 | struct xfs_buf *agbp; | |
550 | int error; | |
81f40041 CH |
551 | xfs_agblock_t agbno; |
552 | uint next_extent; | |
553 | ||
578c714b DW |
554 | xefi = container_of(item, struct xfs_extent_free_item, xefi_list); |
555 | ASSERT(xefi->xefi_blockcount == 1); | |
578c714b DW |
556 | agbno = XFS_FSB_TO_AGBNO(mp, xefi->xefi_startblock); |
557 | oinfo.oi_owner = xefi->xefi_owner; | |
81f40041 | 558 | |
f6b38463 DW |
559 | trace_xfs_agfl_free_deferred(mp, xefi->xefi_pag->pag_agno, 0, agbno, |
560 | xefi->xefi_blockcount); | |
81f40041 | 561 | |
f6b38463 | 562 | error = xfs_alloc_read_agf(xefi->xefi_pag, tp, 0, &agbp); |
81f40041 | 563 | if (!error) |
f6b38463 DW |
564 | error = xfs_free_agfl_block(tp, xefi->xefi_pag->pag_agno, |
565 | agbno, agbp, &oinfo); | |
81f40041 CH |
566 | |
567 | /* | |
568 | * Mark the transaction dirty, even on error. This ensures the | |
569 | * transaction is aborted, which: | |
570 | * | |
571 | * 1.) releases the EFI and frees the EFD | |
572 | * 2.) shuts down the filesystem | |
573 | */ | |
574 | tp->t_flags |= XFS_TRANS_DIRTY; | |
575 | set_bit(XFS_LI_DIRTY, &efdp->efd_item.li_flags); | |
576 | ||
577 | next_extent = efdp->efd_next_extent; | |
578 | ASSERT(next_extent < efdp->efd_format.efd_nextents); | |
579 | extp = &(efdp->efd_format.efd_extents[next_extent]); | |
578c714b DW |
580 | extp->ext_start = xefi->xefi_startblock; |
581 | extp->ext_len = xefi->xefi_blockcount; | |
81f40041 CH |
582 | efdp->efd_next_extent++; |
583 | ||
f6b38463 | 584 | xfs_extent_free_put_group(xefi); |
578c714b | 585 | kmem_cache_free(xfs_extfree_item_cache, xefi); |
81f40041 CH |
586 | return error; |
587 | } | |
588 | ||
589 | /* sub-type with special handling for AGFL deferred frees */ | |
590 | const struct xfs_defer_op_type xfs_agfl_free_defer_type = { | |
591 | .max_items = XFS_EFI_MAX_FAST_EXTENTS, | |
81f40041 CH |
592 | .create_intent = xfs_extent_free_create_intent, |
593 | .abort_intent = xfs_extent_free_abort_intent, | |
81f40041 CH |
594 | .create_done = xfs_extent_free_create_done, |
595 | .finish_item = xfs_agfl_free_finish_item, | |
596 | .cancel_item = xfs_extent_free_cancel_item, | |
597 | }; | |
598 | ||
3c15df3d DW |
599 | /* Is this recovered EFI ok? */ |
600 | static inline bool | |
601 | xfs_efi_validate_ext( | |
602 | struct xfs_mount *mp, | |
603 | struct xfs_extent *extp) | |
604 | { | |
67457eb0 | 605 | return xfs_verify_fsbext(mp, extp->ext_start, extp->ext_len); |
3c15df3d DW |
606 | } |
607 | ||
dc42375d DW |
608 | /* |
609 | * Process an extent free intent item that was recovered from | |
610 | * the log. We need to free the extents that it describes. | |
611 | */ | |
10d0c6e0 | 612 | STATIC int |
96b60f82 DW |
613 | xfs_efi_item_recover( |
614 | struct xfs_log_item *lip, | |
e6fff81e | 615 | struct list_head *capture_list) |
dc42375d | 616 | { |
96b60f82 | 617 | struct xfs_efi_log_item *efip = EFI_ITEM(lip); |
d86142dd | 618 | struct xfs_mount *mp = lip->li_log->l_mp; |
96b60f82 DW |
619 | struct xfs_efd_log_item *efdp; |
620 | struct xfs_trans *tp; | |
96b60f82 DW |
621 | int i; |
622 | int error = 0; | |
dc42375d | 623 | |
dc42375d DW |
624 | /* |
625 | * First check the validity of the extents described by the | |
626 | * EFI. If any are bad, then assume that all are bad and | |
627 | * just toss the EFI. | |
628 | */ | |
629 | for (i = 0; i < efip->efi_format.efi_nextents; i++) { | |
3c15df3d DW |
630 | if (!xfs_efi_validate_ext(mp, |
631 | &efip->efi_format.efi_extents[i])) { | |
632 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, | |
633 | &efip->efi_format, | |
634 | sizeof(efip->efi_format)); | |
895e196f | 635 | return -EFSCORRUPTED; |
3c15df3d | 636 | } |
dc42375d DW |
637 | } |
638 | ||
639 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp); | |
640 | if (error) | |
641 | return error; | |
642 | efdp = xfs_trans_get_efd(tp, efip, efip->efi_format.efi_nextents); | |
643 | ||
644 | for (i = 0; i < efip->efi_format.efi_nextents; i++) { | |
72ba4555 DW |
645 | struct xfs_extent_free_item fake = { |
646 | .xefi_owner = XFS_RMAP_OWN_UNKNOWN, | |
647 | }; | |
648 | struct xfs_extent *extp; | |
649 | ||
e127fafd | 650 | extp = &efip->efi_format.efi_extents[i]; |
72ba4555 DW |
651 | |
652 | fake.xefi_startblock = extp->ext_start; | |
653 | fake.xefi_blockcount = extp->ext_len; | |
654 | ||
f6b38463 | 655 | xfs_extent_free_get_group(mp, &fake); |
72ba4555 | 656 | error = xfs_trans_free_extent(tp, efdp, &fake); |
f6b38463 | 657 | xfs_extent_free_put_group(&fake); |
43059d54 DW |
658 | if (error == -EFSCORRUPTED) |
659 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, | |
660 | extp, sizeof(*extp)); | |
dc42375d DW |
661 | if (error) |
662 | goto abort_error; | |
663 | ||
664 | } | |
665 | ||
512edfac | 666 | return xfs_defer_ops_capture_and_commit(tp, capture_list); |
dc42375d DW |
667 | |
668 | abort_error: | |
669 | xfs_trans_cancel(tp); | |
670 | return error; | |
671 | } | |
86ffa471 | 672 | |
154c733a DW |
673 | STATIC bool |
674 | xfs_efi_item_match( | |
675 | struct xfs_log_item *lip, | |
676 | uint64_t intent_id) | |
677 | { | |
678 | return EFI_ITEM(lip)->efi_format.efi_id == intent_id; | |
679 | } | |
680 | ||
4e919af7 DW |
681 | /* Relog an intent item to push the log tail forward. */ |
682 | static struct xfs_log_item * | |
683 | xfs_efi_item_relog( | |
684 | struct xfs_log_item *intent, | |
685 | struct xfs_trans *tp) | |
686 | { | |
687 | struct xfs_efd_log_item *efdp; | |
688 | struct xfs_efi_log_item *efip; | |
689 | struct xfs_extent *extp; | |
690 | unsigned int count; | |
691 | ||
692 | count = EFI_ITEM(intent)->efi_format.efi_nextents; | |
693 | extp = EFI_ITEM(intent)->efi_format.efi_extents; | |
694 | ||
695 | tp->t_flags |= XFS_TRANS_DIRTY; | |
696 | efdp = xfs_trans_get_efd(tp, EFI_ITEM(intent), count); | |
697 | efdp->efd_next_extent = count; | |
698 | memcpy(efdp->efd_format.efd_extents, extp, count * sizeof(*extp)); | |
699 | set_bit(XFS_LI_DIRTY, &efdp->efd_item.li_flags); | |
700 | ||
701 | efip = xfs_efi_init(tp->t_mountp, count); | |
702 | memcpy(efip->efi_format.efi_extents, extp, count * sizeof(*extp)); | |
703 | atomic_set(&efip->efi_next_extent, count); | |
704 | xfs_trans_add_item(tp, &efip->efi_item); | |
705 | set_bit(XFS_LI_DIRTY, &efip->efi_item.li_flags); | |
706 | return &efip->efi_item; | |
707 | } | |
708 | ||
10d0c6e0 | 709 | static const struct xfs_item_ops xfs_efi_item_ops = { |
f5b81200 | 710 | .flags = XFS_ITEM_INTENT, |
10d0c6e0 DW |
711 | .iop_size = xfs_efi_item_size, |
712 | .iop_format = xfs_efi_item_format, | |
713 | .iop_unpin = xfs_efi_item_unpin, | |
714 | .iop_release = xfs_efi_item_release, | |
715 | .iop_recover = xfs_efi_item_recover, | |
154c733a | 716 | .iop_match = xfs_efi_item_match, |
4e919af7 | 717 | .iop_relog = xfs_efi_item_relog, |
10d0c6e0 DW |
718 | }; |
719 | ||
9817aa80 DW |
720 | /* |
721 | * This routine is called to create an in-core extent free intent | |
722 | * item from the efi format structure which was logged on disk. | |
723 | * It allocates an in-core efi, copies the extents from the format | |
724 | * structure into it, and adds the efi to the AIL with the given | |
725 | * LSN. | |
726 | */ | |
727 | STATIC int | |
728 | xlog_recover_efi_commit_pass2( | |
729 | struct xlog *log, | |
730 | struct list_head *buffer_list, | |
731 | struct xlog_recover_item *item, | |
732 | xfs_lsn_t lsn) | |
733 | { | |
734 | struct xfs_mount *mp = log->l_mp; | |
735 | struct xfs_efi_log_item *efip; | |
736 | struct xfs_efi_log_format *efi_formatp; | |
737 | int error; | |
738 | ||
739 | efi_formatp = item->ri_buf[0].i_addr; | |
740 | ||
3c5aaace | 741 | if (item->ri_buf[0].i_len < xfs_efi_log_format_sizeof(0)) { |
950f0d50 DW |
742 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, |
743 | item->ri_buf[0].i_addr, item->ri_buf[0].i_len); | |
03a7485c DW |
744 | return -EFSCORRUPTED; |
745 | } | |
746 | ||
9817aa80 DW |
747 | efip = xfs_efi_init(mp, efi_formatp->efi_nextents); |
748 | error = xfs_efi_copy_format(&item->ri_buf[0], &efip->efi_format); | |
749 | if (error) { | |
750 | xfs_efi_item_free(efip); | |
751 | return error; | |
752 | } | |
753 | atomic_set(&efip->efi_next_extent, efi_formatp->efi_nextents); | |
9817aa80 | 754 | /* |
86a37174 DW |
755 | * Insert the intent into the AIL directly and drop one reference so |
756 | * that finishing or canceling the work will drop the other. | |
9817aa80 | 757 | */ |
86a37174 | 758 | xfs_trans_ail_insert(log->l_ailp, &efip->efi_item, lsn); |
9817aa80 DW |
759 | xfs_efi_release(efip); |
760 | return 0; | |
761 | } | |
762 | ||
86ffa471 DW |
763 | const struct xlog_recover_item_ops xlog_efi_item_ops = { |
764 | .item_type = XFS_LI_EFI, | |
9817aa80 | 765 | .commit_pass2 = xlog_recover_efi_commit_pass2, |
86ffa471 DW |
766 | }; |
767 | ||
9817aa80 DW |
768 | /* |
769 | * This routine is called when an EFD format structure is found in a committed | |
770 | * transaction in the log. Its purpose is to cancel the corresponding EFI if it | |
771 | * was still in the log. To do this it searches the AIL for the EFI with an id | |
772 | * equal to that in the EFD format structure. If we find it we drop the EFD | |
773 | * reference, which removes the EFI from the AIL and frees it. | |
774 | */ | |
775 | STATIC int | |
776 | xlog_recover_efd_commit_pass2( | |
777 | struct xlog *log, | |
778 | struct list_head *buffer_list, | |
779 | struct xlog_recover_item *item, | |
780 | xfs_lsn_t lsn) | |
781 | { | |
9817aa80 | 782 | struct xfs_efd_log_format *efd_formatp; |
921ed96b | 783 | int buflen = item->ri_buf[0].i_len; |
9817aa80 DW |
784 | |
785 | efd_formatp = item->ri_buf[0].i_addr; | |
921ed96b DW |
786 | |
787 | if (buflen < sizeof(struct xfs_efd_log_format)) { | |
788 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp, | |
789 | efd_formatp, buflen); | |
790 | return -EFSCORRUPTED; | |
791 | } | |
792 | ||
793 | if (item->ri_buf[0].i_len != xfs_efd_log_format32_sizeof( | |
794 | efd_formatp->efd_nextents) && | |
795 | item->ri_buf[0].i_len != xfs_efd_log_format64_sizeof( | |
796 | efd_formatp->efd_nextents)) { | |
797 | XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp, | |
798 | efd_formatp, buflen); | |
799 | return -EFSCORRUPTED; | |
800 | } | |
9817aa80 | 801 | |
154c733a | 802 | xlog_recover_release_intent(log, XFS_LI_EFI, efd_formatp->efd_efi_id); |
9817aa80 DW |
803 | return 0; |
804 | } | |
805 | ||
86ffa471 DW |
806 | const struct xlog_recover_item_ops xlog_efd_item_ops = { |
807 | .item_type = XFS_LI_EFD, | |
9817aa80 | 808 | .commit_pass2 = xlog_recover_efd_commit_pass2, |
86ffa471 | 809 | }; |