Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_fs.h" |
1da177e4 | 20 | #include "xfs_types.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_buf_item.h" | |
25 | #include "xfs_sb.h" | |
26 | #include "xfs_dir.h" | |
27 | #include "xfs_dmapi.h" | |
28 | #include "xfs_mount.h" | |
29 | #include "xfs_trans_priv.h" | |
30 | #include "xfs_extfree_item.h" | |
31 | ||
32 | ||
33 | kmem_zone_t *xfs_efi_zone; | |
34 | kmem_zone_t *xfs_efd_zone; | |
35 | ||
36 | STATIC void xfs_efi_item_unlock(xfs_efi_log_item_t *); | |
37 | STATIC void xfs_efi_item_abort(xfs_efi_log_item_t *); | |
38 | STATIC void xfs_efd_item_abort(xfs_efd_log_item_t *); | |
39 | ||
40 | ||
7d795ca3 CH |
41 | void |
42 | xfs_efi_item_free(xfs_efi_log_item_t *efip) | |
43 | { | |
44 | int nexts = efip->efi_format.efi_nextents; | |
45 | ||
46 | if (nexts > XFS_EFI_MAX_FAST_EXTENTS) { | |
47 | kmem_free(efip, sizeof(xfs_efi_log_item_t) + | |
48 | (nexts - 1) * sizeof(xfs_extent_t)); | |
49 | } else { | |
50 | kmem_zone_free(xfs_efi_zone, efip); | |
51 | } | |
52 | } | |
1da177e4 LT |
53 | |
54 | /* | |
55 | * This returns the number of iovecs needed to log the given efi item. | |
56 | * We only need 1 iovec for an efi item. It just logs the efi_log_format | |
57 | * structure. | |
58 | */ | |
59 | /*ARGSUSED*/ | |
60 | STATIC uint | |
61 | xfs_efi_item_size(xfs_efi_log_item_t *efip) | |
62 | { | |
63 | return 1; | |
64 | } | |
65 | ||
66 | /* | |
67 | * This is called to fill in the vector of log iovecs for the | |
68 | * given efi log item. We use only 1 iovec, and we point that | |
69 | * at the efi_log_format structure embedded in the efi item. | |
70 | * It is at this point that we assert that all of the extent | |
71 | * slots in the efi item have been filled. | |
72 | */ | |
73 | STATIC void | |
74 | xfs_efi_item_format(xfs_efi_log_item_t *efip, | |
75 | xfs_log_iovec_t *log_vector) | |
76 | { | |
77 | uint size; | |
78 | ||
79 | ASSERT(efip->efi_next_extent == efip->efi_format.efi_nextents); | |
80 | ||
81 | efip->efi_format.efi_type = XFS_LI_EFI; | |
82 | ||
83 | size = sizeof(xfs_efi_log_format_t); | |
84 | size += (efip->efi_format.efi_nextents - 1) * sizeof(xfs_extent_t); | |
85 | efip->efi_format.efi_size = 1; | |
86 | ||
87 | log_vector->i_addr = (xfs_caddr_t)&(efip->efi_format); | |
88 | log_vector->i_len = size; | |
7e9c6396 | 89 | XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_EFI_FORMAT); |
1da177e4 LT |
90 | ASSERT(size >= sizeof(xfs_efi_log_format_t)); |
91 | } | |
92 | ||
93 | ||
94 | /* | |
95 | * Pinning has no meaning for an efi item, so just return. | |
96 | */ | |
97 | /*ARGSUSED*/ | |
98 | STATIC void | |
99 | xfs_efi_item_pin(xfs_efi_log_item_t *efip) | |
100 | { | |
101 | return; | |
102 | } | |
103 | ||
104 | ||
105 | /* | |
106 | * While EFIs cannot really be pinned, the unpin operation is the | |
107 | * last place at which the EFI is manipulated during a transaction. | |
108 | * Here we coordinate with xfs_efi_cancel() to determine who gets to | |
109 | * free the EFI. | |
110 | */ | |
111 | /*ARGSUSED*/ | |
112 | STATIC void | |
113 | xfs_efi_item_unpin(xfs_efi_log_item_t *efip, int stale) | |
114 | { | |
1da177e4 LT |
115 | xfs_mount_t *mp; |
116 | SPLDECL(s); | |
117 | ||
118 | mp = efip->efi_item.li_mountp; | |
119 | AIL_LOCK(mp, s); | |
120 | if (efip->efi_flags & XFS_EFI_CANCELED) { | |
121 | /* | |
122 | * xfs_trans_delete_ail() drops the AIL lock. | |
123 | */ | |
124 | xfs_trans_delete_ail(mp, (xfs_log_item_t *)efip, s); | |
7d795ca3 | 125 | xfs_efi_item_free(efip); |
1da177e4 LT |
126 | } else { |
127 | efip->efi_flags |= XFS_EFI_COMMITTED; | |
128 | AIL_UNLOCK(mp, s); | |
129 | } | |
1da177e4 LT |
130 | } |
131 | ||
132 | /* | |
133 | * like unpin only we have to also clear the xaction descriptor | |
134 | * pointing the log item if we free the item. This routine duplicates | |
135 | * unpin because efi_flags is protected by the AIL lock. Freeing | |
136 | * the descriptor and then calling unpin would force us to drop the AIL | |
137 | * lock which would open up a race condition. | |
138 | */ | |
139 | STATIC void | |
140 | xfs_efi_item_unpin_remove(xfs_efi_log_item_t *efip, xfs_trans_t *tp) | |
141 | { | |
1da177e4 LT |
142 | xfs_mount_t *mp; |
143 | xfs_log_item_desc_t *lidp; | |
144 | SPLDECL(s); | |
145 | ||
146 | mp = efip->efi_item.li_mountp; | |
147 | AIL_LOCK(mp, s); | |
148 | if (efip->efi_flags & XFS_EFI_CANCELED) { | |
149 | /* | |
150 | * free the xaction descriptor pointing to this item | |
151 | */ | |
152 | lidp = xfs_trans_find_item(tp, (xfs_log_item_t *) efip); | |
153 | xfs_trans_free_item(tp, lidp); | |
154 | /* | |
155 | * pull the item off the AIL. | |
156 | * xfs_trans_delete_ail() drops the AIL lock. | |
157 | */ | |
158 | xfs_trans_delete_ail(mp, (xfs_log_item_t *)efip, s); | |
7d795ca3 | 159 | xfs_efi_item_free(efip); |
1da177e4 LT |
160 | } else { |
161 | efip->efi_flags |= XFS_EFI_COMMITTED; | |
162 | AIL_UNLOCK(mp, s); | |
163 | } | |
1da177e4 LT |
164 | } |
165 | ||
166 | /* | |
167 | * Efi items have no locking or pushing. However, since EFIs are | |
168 | * pulled from the AIL when their corresponding EFDs are committed | |
169 | * to disk, their situation is very similar to being pinned. Return | |
170 | * XFS_ITEM_PINNED so that the caller will eventually flush the log. | |
171 | * This should help in getting the EFI out of the AIL. | |
172 | */ | |
173 | /*ARGSUSED*/ | |
174 | STATIC uint | |
175 | xfs_efi_item_trylock(xfs_efi_log_item_t *efip) | |
176 | { | |
177 | return XFS_ITEM_PINNED; | |
178 | } | |
179 | ||
180 | /* | |
181 | * Efi items have no locking, so just return. | |
182 | */ | |
183 | /*ARGSUSED*/ | |
184 | STATIC void | |
185 | xfs_efi_item_unlock(xfs_efi_log_item_t *efip) | |
186 | { | |
187 | if (efip->efi_item.li_flags & XFS_LI_ABORTED) | |
188 | xfs_efi_item_abort(efip); | |
189 | return; | |
190 | } | |
191 | ||
192 | /* | |
193 | * The EFI is logged only once and cannot be moved in the log, so | |
194 | * simply return the lsn at which it's been logged. The canceled | |
195 | * flag is not paid any attention here. Checking for that is delayed | |
196 | * until the EFI is unpinned. | |
197 | */ | |
198 | /*ARGSUSED*/ | |
199 | STATIC xfs_lsn_t | |
200 | xfs_efi_item_committed(xfs_efi_log_item_t *efip, xfs_lsn_t lsn) | |
201 | { | |
202 | return lsn; | |
203 | } | |
204 | ||
205 | /* | |
206 | * This is called when the transaction logging the EFI is aborted. | |
207 | * Free up the EFI and return. No need to clean up the slot for | |
208 | * the item in the transaction. That was done by the unpin code | |
209 | * which is called prior to this routine in the abort/fs-shutdown path. | |
210 | */ | |
211 | STATIC void | |
212 | xfs_efi_item_abort(xfs_efi_log_item_t *efip) | |
213 | { | |
7d795ca3 | 214 | xfs_efi_item_free(efip); |
1da177e4 LT |
215 | } |
216 | ||
217 | /* | |
218 | * There isn't much you can do to push on an efi item. It is simply | |
219 | * stuck waiting for all of its corresponding efd items to be | |
220 | * committed to disk. | |
221 | */ | |
222 | /*ARGSUSED*/ | |
223 | STATIC void | |
224 | xfs_efi_item_push(xfs_efi_log_item_t *efip) | |
225 | { | |
226 | return; | |
227 | } | |
228 | ||
229 | /* | |
230 | * The EFI dependency tracking op doesn't do squat. It can't because | |
231 | * it doesn't know where the free extent is coming from. The dependency | |
232 | * tracking has to be handled by the "enclosing" metadata object. For | |
233 | * example, for inodes, the inode is locked throughout the extent freeing | |
234 | * so the dependency should be recorded there. | |
235 | */ | |
236 | /*ARGSUSED*/ | |
237 | STATIC void | |
238 | xfs_efi_item_committing(xfs_efi_log_item_t *efip, xfs_lsn_t lsn) | |
239 | { | |
240 | return; | |
241 | } | |
242 | ||
243 | /* | |
244 | * This is the ops vector shared by all efi log items. | |
245 | */ | |
ba0f32d4 | 246 | STATIC struct xfs_item_ops xfs_efi_item_ops = { |
1da177e4 LT |
247 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_efi_item_size, |
248 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
249 | xfs_efi_item_format, | |
250 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_efi_item_pin, | |
251 | .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_efi_item_unpin, | |
252 | .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t *)) | |
253 | xfs_efi_item_unpin_remove, | |
254 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_efi_item_trylock, | |
255 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_efi_item_unlock, | |
256 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
257 | xfs_efi_item_committed, | |
258 | .iop_push = (void(*)(xfs_log_item_t*))xfs_efi_item_push, | |
259 | .iop_abort = (void(*)(xfs_log_item_t*))xfs_efi_item_abort, | |
260 | .iop_pushbuf = NULL, | |
261 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
262 | xfs_efi_item_committing | |
263 | }; | |
264 | ||
265 | ||
266 | /* | |
267 | * Allocate and initialize an efi item with the given number of extents. | |
268 | */ | |
269 | xfs_efi_log_item_t * | |
270 | xfs_efi_init(xfs_mount_t *mp, | |
271 | uint nextents) | |
272 | ||
273 | { | |
274 | xfs_efi_log_item_t *efip; | |
275 | uint size; | |
276 | ||
277 | ASSERT(nextents > 0); | |
278 | if (nextents > XFS_EFI_MAX_FAST_EXTENTS) { | |
279 | size = (uint)(sizeof(xfs_efi_log_item_t) + | |
280 | ((nextents - 1) * sizeof(xfs_extent_t))); | |
281 | efip = (xfs_efi_log_item_t*)kmem_zalloc(size, KM_SLEEP); | |
282 | } else { | |
283 | efip = (xfs_efi_log_item_t*)kmem_zone_zalloc(xfs_efi_zone, | |
284 | KM_SLEEP); | |
285 | } | |
286 | ||
287 | efip->efi_item.li_type = XFS_LI_EFI; | |
288 | efip->efi_item.li_ops = &xfs_efi_item_ops; | |
289 | efip->efi_item.li_mountp = mp; | |
290 | efip->efi_format.efi_nextents = nextents; | |
291 | efip->efi_format.efi_id = (__psint_t)(void*)efip; | |
292 | ||
293 | return (efip); | |
294 | } | |
295 | ||
296 | /* | |
297 | * This is called by the efd item code below to release references to | |
298 | * the given efi item. Each efd calls this with the number of | |
299 | * extents that it has logged, and when the sum of these reaches | |
300 | * the total number of extents logged by this efi item we can free | |
301 | * the efi item. | |
302 | * | |
303 | * Freeing the efi item requires that we remove it from the AIL. | |
304 | * We'll use the AIL lock to protect our counters as well as | |
305 | * the removal from the AIL. | |
306 | */ | |
307 | void | |
308 | xfs_efi_release(xfs_efi_log_item_t *efip, | |
309 | uint nextents) | |
310 | { | |
311 | xfs_mount_t *mp; | |
312 | int extents_left; | |
1da177e4 LT |
313 | SPLDECL(s); |
314 | ||
315 | mp = efip->efi_item.li_mountp; | |
316 | ASSERT(efip->efi_next_extent > 0); | |
317 | ASSERT(efip->efi_flags & XFS_EFI_COMMITTED); | |
318 | ||
319 | AIL_LOCK(mp, s); | |
320 | ASSERT(efip->efi_next_extent >= nextents); | |
321 | efip->efi_next_extent -= nextents; | |
322 | extents_left = efip->efi_next_extent; | |
323 | if (extents_left == 0) { | |
324 | /* | |
325 | * xfs_trans_delete_ail() drops the AIL lock. | |
326 | */ | |
327 | xfs_trans_delete_ail(mp, (xfs_log_item_t *)efip, s); | |
7d795ca3 | 328 | xfs_efi_item_free(efip); |
1da177e4 LT |
329 | } else { |
330 | AIL_UNLOCK(mp, s); | |
331 | } | |
1da177e4 LT |
332 | } |
333 | ||
334 | /* | |
335 | * This is called when the transaction that should be committing the | |
336 | * EFD corresponding to the given EFI is aborted. The committed and | |
337 | * canceled flags are used to coordinate the freeing of the EFI and | |
338 | * the references by the transaction that committed it. | |
339 | */ | |
340 | STATIC void | |
341 | xfs_efi_cancel( | |
342 | xfs_efi_log_item_t *efip) | |
343 | { | |
1da177e4 LT |
344 | xfs_mount_t *mp; |
345 | SPLDECL(s); | |
346 | ||
347 | mp = efip->efi_item.li_mountp; | |
348 | AIL_LOCK(mp, s); | |
349 | if (efip->efi_flags & XFS_EFI_COMMITTED) { | |
350 | /* | |
351 | * xfs_trans_delete_ail() drops the AIL lock. | |
352 | */ | |
353 | xfs_trans_delete_ail(mp, (xfs_log_item_t *)efip, s); | |
7d795ca3 | 354 | xfs_efi_item_free(efip); |
1da177e4 LT |
355 | } else { |
356 | efip->efi_flags |= XFS_EFI_CANCELED; | |
357 | AIL_UNLOCK(mp, s); | |
358 | } | |
1da177e4 LT |
359 | } |
360 | ||
7d795ca3 CH |
361 | STATIC void |
362 | xfs_efd_item_free(xfs_efd_log_item_t *efdp) | |
363 | { | |
364 | int nexts = efdp->efd_format.efd_nextents; | |
1da177e4 | 365 | |
7d795ca3 CH |
366 | if (nexts > XFS_EFD_MAX_FAST_EXTENTS) { |
367 | kmem_free(efdp, sizeof(xfs_efd_log_item_t) + | |
368 | (nexts - 1) * sizeof(xfs_extent_t)); | |
369 | } else { | |
370 | kmem_zone_free(xfs_efd_zone, efdp); | |
371 | } | |
372 | } | |
1da177e4 LT |
373 | |
374 | /* | |
375 | * This returns the number of iovecs needed to log the given efd item. | |
376 | * We only need 1 iovec for an efd item. It just logs the efd_log_format | |
377 | * structure. | |
378 | */ | |
379 | /*ARGSUSED*/ | |
380 | STATIC uint | |
381 | xfs_efd_item_size(xfs_efd_log_item_t *efdp) | |
382 | { | |
383 | return 1; | |
384 | } | |
385 | ||
386 | /* | |
387 | * This is called to fill in the vector of log iovecs for the | |
388 | * given efd log item. We use only 1 iovec, and we point that | |
389 | * at the efd_log_format structure embedded in the efd item. | |
390 | * It is at this point that we assert that all of the extent | |
391 | * slots in the efd item have been filled. | |
392 | */ | |
393 | STATIC void | |
394 | xfs_efd_item_format(xfs_efd_log_item_t *efdp, | |
395 | xfs_log_iovec_t *log_vector) | |
396 | { | |
397 | uint size; | |
398 | ||
399 | ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents); | |
400 | ||
401 | efdp->efd_format.efd_type = XFS_LI_EFD; | |
402 | ||
403 | size = sizeof(xfs_efd_log_format_t); | |
404 | size += (efdp->efd_format.efd_nextents - 1) * sizeof(xfs_extent_t); | |
405 | efdp->efd_format.efd_size = 1; | |
406 | ||
407 | log_vector->i_addr = (xfs_caddr_t)&(efdp->efd_format); | |
408 | log_vector->i_len = size; | |
7e9c6396 | 409 | XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_EFD_FORMAT); |
1da177e4 LT |
410 | ASSERT(size >= sizeof(xfs_efd_log_format_t)); |
411 | } | |
412 | ||
413 | ||
414 | /* | |
415 | * Pinning has no meaning for an efd item, so just return. | |
416 | */ | |
417 | /*ARGSUSED*/ | |
418 | STATIC void | |
419 | xfs_efd_item_pin(xfs_efd_log_item_t *efdp) | |
420 | { | |
421 | return; | |
422 | } | |
423 | ||
424 | ||
425 | /* | |
426 | * Since pinning has no meaning for an efd item, unpinning does | |
427 | * not either. | |
428 | */ | |
429 | /*ARGSUSED*/ | |
430 | STATIC void | |
431 | xfs_efd_item_unpin(xfs_efd_log_item_t *efdp, int stale) | |
432 | { | |
433 | return; | |
434 | } | |
435 | ||
436 | /*ARGSUSED*/ | |
437 | STATIC void | |
438 | xfs_efd_item_unpin_remove(xfs_efd_log_item_t *efdp, xfs_trans_t *tp) | |
439 | { | |
440 | return; | |
441 | } | |
442 | ||
443 | /* | |
444 | * Efd items have no locking, so just return success. | |
445 | */ | |
446 | /*ARGSUSED*/ | |
447 | STATIC uint | |
448 | xfs_efd_item_trylock(xfs_efd_log_item_t *efdp) | |
449 | { | |
450 | return XFS_ITEM_LOCKED; | |
451 | } | |
452 | ||
453 | /* | |
454 | * Efd items have no locking or pushing, so return failure | |
455 | * so that the caller doesn't bother with us. | |
456 | */ | |
457 | /*ARGSUSED*/ | |
458 | STATIC void | |
459 | xfs_efd_item_unlock(xfs_efd_log_item_t *efdp) | |
460 | { | |
461 | if (efdp->efd_item.li_flags & XFS_LI_ABORTED) | |
462 | xfs_efd_item_abort(efdp); | |
463 | return; | |
464 | } | |
465 | ||
466 | /* | |
467 | * When the efd item is committed to disk, all we need to do | |
468 | * is delete our reference to our partner efi item and then | |
469 | * free ourselves. Since we're freeing ourselves we must | |
470 | * return -1 to keep the transaction code from further referencing | |
471 | * this item. | |
472 | */ | |
473 | /*ARGSUSED*/ | |
474 | STATIC xfs_lsn_t | |
475 | xfs_efd_item_committed(xfs_efd_log_item_t *efdp, xfs_lsn_t lsn) | |
476 | { | |
1da177e4 LT |
477 | /* |
478 | * If we got a log I/O error, it's always the case that the LR with the | |
479 | * EFI got unpinned and freed before the EFD got aborted. | |
480 | */ | |
481 | if ((efdp->efd_item.li_flags & XFS_LI_ABORTED) == 0) | |
482 | xfs_efi_release(efdp->efd_efip, efdp->efd_format.efd_nextents); | |
483 | ||
7d795ca3 | 484 | xfs_efd_item_free(efdp); |
1da177e4 LT |
485 | return (xfs_lsn_t)-1; |
486 | } | |
487 | ||
488 | /* | |
489 | * The transaction of which this EFD is a part has been aborted. | |
490 | * Inform its companion EFI of this fact and then clean up after | |
491 | * ourselves. No need to clean up the slot for the item in the | |
492 | * transaction. That was done by the unpin code which is called | |
493 | * prior to this routine in the abort/fs-shutdown path. | |
494 | */ | |
495 | STATIC void | |
496 | xfs_efd_item_abort(xfs_efd_log_item_t *efdp) | |
497 | { | |
1da177e4 LT |
498 | /* |
499 | * If we got a log I/O error, it's always the case that the LR with the | |
500 | * EFI got unpinned and freed before the EFD got aborted. So don't | |
501 | * reference the EFI at all in that case. | |
502 | */ | |
503 | if ((efdp->efd_item.li_flags & XFS_LI_ABORTED) == 0) | |
504 | xfs_efi_cancel(efdp->efd_efip); | |
505 | ||
7d795ca3 | 506 | xfs_efd_item_free(efdp); |
1da177e4 LT |
507 | } |
508 | ||
509 | /* | |
510 | * There isn't much you can do to push on an efd item. It is simply | |
511 | * stuck waiting for the log to be flushed to disk. | |
512 | */ | |
513 | /*ARGSUSED*/ | |
514 | STATIC void | |
515 | xfs_efd_item_push(xfs_efd_log_item_t *efdp) | |
516 | { | |
517 | return; | |
518 | } | |
519 | ||
520 | /* | |
521 | * The EFD dependency tracking op doesn't do squat. It can't because | |
522 | * it doesn't know where the free extent is coming from. The dependency | |
523 | * tracking has to be handled by the "enclosing" metadata object. For | |
524 | * example, for inodes, the inode is locked throughout the extent freeing | |
525 | * so the dependency should be recorded there. | |
526 | */ | |
527 | /*ARGSUSED*/ | |
528 | STATIC void | |
529 | xfs_efd_item_committing(xfs_efd_log_item_t *efip, xfs_lsn_t lsn) | |
530 | { | |
531 | return; | |
532 | } | |
533 | ||
534 | /* | |
535 | * This is the ops vector shared by all efd log items. | |
536 | */ | |
ba0f32d4 | 537 | STATIC struct xfs_item_ops xfs_efd_item_ops = { |
1da177e4 LT |
538 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_efd_item_size, |
539 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
540 | xfs_efd_item_format, | |
541 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_efd_item_pin, | |
542 | .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_efd_item_unpin, | |
543 | .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*)) | |
544 | xfs_efd_item_unpin_remove, | |
545 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_efd_item_trylock, | |
546 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_efd_item_unlock, | |
547 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
548 | xfs_efd_item_committed, | |
549 | .iop_push = (void(*)(xfs_log_item_t*))xfs_efd_item_push, | |
550 | .iop_abort = (void(*)(xfs_log_item_t*))xfs_efd_item_abort, | |
551 | .iop_pushbuf = NULL, | |
552 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
553 | xfs_efd_item_committing | |
554 | }; | |
555 | ||
556 | ||
557 | /* | |
558 | * Allocate and initialize an efd item with the given number of extents. | |
559 | */ | |
560 | xfs_efd_log_item_t * | |
561 | xfs_efd_init(xfs_mount_t *mp, | |
562 | xfs_efi_log_item_t *efip, | |
563 | uint nextents) | |
564 | ||
565 | { | |
566 | xfs_efd_log_item_t *efdp; | |
567 | uint size; | |
568 | ||
569 | ASSERT(nextents > 0); | |
570 | if (nextents > XFS_EFD_MAX_FAST_EXTENTS) { | |
571 | size = (uint)(sizeof(xfs_efd_log_item_t) + | |
572 | ((nextents - 1) * sizeof(xfs_extent_t))); | |
573 | efdp = (xfs_efd_log_item_t*)kmem_zalloc(size, KM_SLEEP); | |
574 | } else { | |
575 | efdp = (xfs_efd_log_item_t*)kmem_zone_zalloc(xfs_efd_zone, | |
576 | KM_SLEEP); | |
577 | } | |
578 | ||
579 | efdp->efd_item.li_type = XFS_LI_EFD; | |
580 | efdp->efd_item.li_ops = &xfs_efd_item_ops; | |
581 | efdp->efd_item.li_mountp = mp; | |
582 | efdp->efd_efip = efip; | |
583 | efdp->efd_format.efd_nextents = nextents; | |
584 | efdp->efd_format.efd_efi_id = efip->efi_format.efi_id; | |
585 | ||
586 | return (efdp); | |
587 | } |