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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" | |
da353b0d | 26 | #include "xfs_ag.h" |
1da177e4 LT |
27 | #include "xfs_mount.h" |
28 | #include "xfs_trans_priv.h" | |
29 | #include "xfs_extfree_item.h" | |
30 | ||
31 | ||
32 | kmem_zone_t *xfs_efi_zone; | |
33 | kmem_zone_t *xfs_efd_zone; | |
34 | ||
35 | STATIC void xfs_efi_item_unlock(xfs_efi_log_item_t *); | |
1da177e4 | 36 | |
7d795ca3 CH |
37 | void |
38 | xfs_efi_item_free(xfs_efi_log_item_t *efip) | |
39 | { | |
40 | int nexts = efip->efi_format.efi_nextents; | |
41 | ||
42 | if (nexts > XFS_EFI_MAX_FAST_EXTENTS) { | |
f0e2d93c | 43 | kmem_free(efip); |
7d795ca3 CH |
44 | } else { |
45 | kmem_zone_free(xfs_efi_zone, efip); | |
46 | } | |
47 | } | |
1da177e4 LT |
48 | |
49 | /* | |
50 | * This returns the number of iovecs needed to log the given efi item. | |
51 | * We only need 1 iovec for an efi item. It just logs the efi_log_format | |
52 | * structure. | |
53 | */ | |
54 | /*ARGSUSED*/ | |
55 | STATIC uint | |
56 | xfs_efi_item_size(xfs_efi_log_item_t *efip) | |
57 | { | |
58 | return 1; | |
59 | } | |
60 | ||
61 | /* | |
62 | * This is called to fill in the vector of log iovecs for the | |
63 | * given efi log item. We use only 1 iovec, and we point that | |
64 | * at the efi_log_format structure embedded in the efi item. | |
65 | * It is at this point that we assert that all of the extent | |
66 | * slots in the efi item have been filled. | |
67 | */ | |
68 | STATIC void | |
69 | xfs_efi_item_format(xfs_efi_log_item_t *efip, | |
70 | xfs_log_iovec_t *log_vector) | |
71 | { | |
72 | uint size; | |
73 | ||
74 | ASSERT(efip->efi_next_extent == efip->efi_format.efi_nextents); | |
75 | ||
76 | efip->efi_format.efi_type = XFS_LI_EFI; | |
77 | ||
78 | size = sizeof(xfs_efi_log_format_t); | |
79 | size += (efip->efi_format.efi_nextents - 1) * sizeof(xfs_extent_t); | |
80 | efip->efi_format.efi_size = 1; | |
81 | ||
82 | log_vector->i_addr = (xfs_caddr_t)&(efip->efi_format); | |
83 | log_vector->i_len = size; | |
4139b3b3 | 84 | log_vector->i_type = XLOG_REG_TYPE_EFI_FORMAT; |
1da177e4 LT |
85 | ASSERT(size >= sizeof(xfs_efi_log_format_t)); |
86 | } | |
87 | ||
88 | ||
89 | /* | |
90 | * Pinning has no meaning for an efi item, so just return. | |
91 | */ | |
92 | /*ARGSUSED*/ | |
93 | STATIC void | |
94 | xfs_efi_item_pin(xfs_efi_log_item_t *efip) | |
95 | { | |
96 | return; | |
97 | } | |
98 | ||
99 | ||
100 | /* | |
101 | * While EFIs cannot really be pinned, the unpin operation is the | |
102 | * last place at which the EFI is manipulated during a transaction. | |
103 | * Here we coordinate with xfs_efi_cancel() to determine who gets to | |
104 | * free the EFI. | |
105 | */ | |
106 | /*ARGSUSED*/ | |
107 | STATIC void | |
8e123850 | 108 | xfs_efi_item_unpin(xfs_efi_log_item_t *efip) |
1da177e4 | 109 | { |
783a2f65 | 110 | struct xfs_ail *ailp = efip->efi_item.li_ailp; |
1da177e4 | 111 | |
fc1829f3 | 112 | spin_lock(&ailp->xa_lock); |
1da177e4 | 113 | if (efip->efi_flags & XFS_EFI_CANCELED) { |
783a2f65 DC |
114 | /* xfs_trans_ail_delete() drops the AIL lock. */ |
115 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)efip); | |
7d795ca3 | 116 | xfs_efi_item_free(efip); |
1da177e4 LT |
117 | } else { |
118 | efip->efi_flags |= XFS_EFI_COMMITTED; | |
fc1829f3 | 119 | spin_unlock(&ailp->xa_lock); |
1da177e4 | 120 | } |
1da177e4 LT |
121 | } |
122 | ||
123 | /* | |
124 | * like unpin only we have to also clear the xaction descriptor | |
125 | * pointing the log item if we free the item. This routine duplicates | |
126 | * unpin because efi_flags is protected by the AIL lock. Freeing | |
127 | * the descriptor and then calling unpin would force us to drop the AIL | |
128 | * lock which would open up a race condition. | |
129 | */ | |
130 | STATIC void | |
131 | xfs_efi_item_unpin_remove(xfs_efi_log_item_t *efip, xfs_trans_t *tp) | |
132 | { | |
783a2f65 | 133 | struct xfs_ail *ailp = efip->efi_item.li_ailp; |
1da177e4 | 134 | xfs_log_item_desc_t *lidp; |
1da177e4 | 135 | |
fc1829f3 | 136 | spin_lock(&ailp->xa_lock); |
1da177e4 LT |
137 | if (efip->efi_flags & XFS_EFI_CANCELED) { |
138 | /* | |
139 | * free the xaction descriptor pointing to this item | |
140 | */ | |
141 | lidp = xfs_trans_find_item(tp, (xfs_log_item_t *) efip); | |
142 | xfs_trans_free_item(tp, lidp); | |
783a2f65 DC |
143 | |
144 | /* xfs_trans_ail_delete() drops the AIL lock. */ | |
145 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)efip); | |
7d795ca3 | 146 | xfs_efi_item_free(efip); |
1da177e4 LT |
147 | } else { |
148 | efip->efi_flags |= XFS_EFI_COMMITTED; | |
fc1829f3 | 149 | spin_unlock(&ailp->xa_lock); |
1da177e4 | 150 | } |
1da177e4 LT |
151 | } |
152 | ||
153 | /* | |
154 | * Efi items have no locking or pushing. However, since EFIs are | |
155 | * pulled from the AIL when their corresponding EFDs are committed | |
156 | * to disk, their situation is very similar to being pinned. Return | |
157 | * XFS_ITEM_PINNED so that the caller will eventually flush the log. | |
158 | * This should help in getting the EFI out of the AIL. | |
159 | */ | |
160 | /*ARGSUSED*/ | |
161 | STATIC uint | |
162 | xfs_efi_item_trylock(xfs_efi_log_item_t *efip) | |
163 | { | |
164 | return XFS_ITEM_PINNED; | |
165 | } | |
166 | ||
167 | /* | |
168 | * Efi items have no locking, so just return. | |
169 | */ | |
170 | /*ARGSUSED*/ | |
171 | STATIC void | |
172 | xfs_efi_item_unlock(xfs_efi_log_item_t *efip) | |
173 | { | |
174 | if (efip->efi_item.li_flags & XFS_LI_ABORTED) | |
065d312e | 175 | xfs_efi_item_free(efip); |
1da177e4 LT |
176 | return; |
177 | } | |
178 | ||
179 | /* | |
180 | * The EFI is logged only once and cannot be moved in the log, so | |
181 | * simply return the lsn at which it's been logged. The canceled | |
182 | * flag is not paid any attention here. Checking for that is delayed | |
183 | * until the EFI is unpinned. | |
184 | */ | |
185 | /*ARGSUSED*/ | |
186 | STATIC xfs_lsn_t | |
187 | xfs_efi_item_committed(xfs_efi_log_item_t *efip, xfs_lsn_t lsn) | |
188 | { | |
189 | return lsn; | |
190 | } | |
191 | ||
1da177e4 LT |
192 | /* |
193 | * There isn't much you can do to push on an efi item. It is simply | |
194 | * stuck waiting for all of its corresponding efd items to be | |
195 | * committed to disk. | |
196 | */ | |
197 | /*ARGSUSED*/ | |
198 | STATIC void | |
199 | xfs_efi_item_push(xfs_efi_log_item_t *efip) | |
200 | { | |
201 | return; | |
202 | } | |
203 | ||
204 | /* | |
205 | * The EFI dependency tracking op doesn't do squat. It can't because | |
206 | * it doesn't know where the free extent is coming from. The dependency | |
207 | * tracking has to be handled by the "enclosing" metadata object. For | |
208 | * example, for inodes, the inode is locked throughout the extent freeing | |
209 | * so the dependency should be recorded there. | |
210 | */ | |
211 | /*ARGSUSED*/ | |
212 | STATIC void | |
213 | xfs_efi_item_committing(xfs_efi_log_item_t *efip, xfs_lsn_t lsn) | |
214 | { | |
215 | return; | |
216 | } | |
217 | ||
218 | /* | |
219 | * This is the ops vector shared by all efi log items. | |
220 | */ | |
7989cb8e | 221 | static struct xfs_item_ops xfs_efi_item_ops = { |
1da177e4 LT |
222 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_efi_item_size, |
223 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
224 | xfs_efi_item_format, | |
225 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_efi_item_pin, | |
8e123850 | 226 | .iop_unpin = (void(*)(xfs_log_item_t*))xfs_efi_item_unpin, |
1da177e4 LT |
227 | .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t *)) |
228 | xfs_efi_item_unpin_remove, | |
229 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_efi_item_trylock, | |
230 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_efi_item_unlock, | |
231 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
232 | xfs_efi_item_committed, | |
233 | .iop_push = (void(*)(xfs_log_item_t*))xfs_efi_item_push, | |
1da177e4 LT |
234 | .iop_pushbuf = NULL, |
235 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
236 | xfs_efi_item_committing | |
237 | }; | |
238 | ||
239 | ||
240 | /* | |
241 | * Allocate and initialize an efi item with the given number of extents. | |
242 | */ | |
243 | xfs_efi_log_item_t * | |
244 | xfs_efi_init(xfs_mount_t *mp, | |
245 | uint nextents) | |
246 | ||
247 | { | |
248 | xfs_efi_log_item_t *efip; | |
249 | uint size; | |
250 | ||
251 | ASSERT(nextents > 0); | |
252 | if (nextents > XFS_EFI_MAX_FAST_EXTENTS) { | |
253 | size = (uint)(sizeof(xfs_efi_log_item_t) + | |
254 | ((nextents - 1) * sizeof(xfs_extent_t))); | |
255 | efip = (xfs_efi_log_item_t*)kmem_zalloc(size, KM_SLEEP); | |
256 | } else { | |
257 | efip = (xfs_efi_log_item_t*)kmem_zone_zalloc(xfs_efi_zone, | |
258 | KM_SLEEP); | |
259 | } | |
260 | ||
43f5efc5 | 261 | xfs_log_item_init(mp, &efip->efi_item, XFS_LI_EFI, &xfs_efi_item_ops); |
1da177e4 LT |
262 | efip->efi_format.efi_nextents = nextents; |
263 | efip->efi_format.efi_id = (__psint_t)(void*)efip; | |
264 | ||
265 | return (efip); | |
266 | } | |
267 | ||
6d192a9b TS |
268 | /* |
269 | * Copy an EFI format buffer from the given buf, and into the destination | |
270 | * EFI format structure. | |
271 | * The given buffer can be in 32 bit or 64 bit form (which has different padding), | |
272 | * one of which will be the native format for this kernel. | |
273 | * It will handle the conversion of formats if necessary. | |
274 | */ | |
275 | int | |
276 | xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt) | |
277 | { | |
278 | xfs_efi_log_format_t *src_efi_fmt = (xfs_efi_log_format_t *)buf->i_addr; | |
279 | uint i; | |
280 | uint len = sizeof(xfs_efi_log_format_t) + | |
281 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_t); | |
282 | uint len32 = sizeof(xfs_efi_log_format_32_t) + | |
283 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_32_t); | |
284 | uint len64 = sizeof(xfs_efi_log_format_64_t) + | |
285 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_64_t); | |
286 | ||
287 | if (buf->i_len == len) { | |
288 | memcpy((char *)dst_efi_fmt, (char*)src_efi_fmt, len); | |
289 | return 0; | |
290 | } else if (buf->i_len == len32) { | |
291 | xfs_efi_log_format_32_t *src_efi_fmt_32 = | |
292 | (xfs_efi_log_format_32_t *)buf->i_addr; | |
293 | ||
294 | dst_efi_fmt->efi_type = src_efi_fmt_32->efi_type; | |
295 | dst_efi_fmt->efi_size = src_efi_fmt_32->efi_size; | |
296 | dst_efi_fmt->efi_nextents = src_efi_fmt_32->efi_nextents; | |
297 | dst_efi_fmt->efi_id = src_efi_fmt_32->efi_id; | |
298 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
299 | dst_efi_fmt->efi_extents[i].ext_start = | |
300 | src_efi_fmt_32->efi_extents[i].ext_start; | |
301 | dst_efi_fmt->efi_extents[i].ext_len = | |
302 | src_efi_fmt_32->efi_extents[i].ext_len; | |
303 | } | |
304 | return 0; | |
305 | } else if (buf->i_len == len64) { | |
306 | xfs_efi_log_format_64_t *src_efi_fmt_64 = | |
307 | (xfs_efi_log_format_64_t *)buf->i_addr; | |
308 | ||
309 | dst_efi_fmt->efi_type = src_efi_fmt_64->efi_type; | |
310 | dst_efi_fmt->efi_size = src_efi_fmt_64->efi_size; | |
311 | dst_efi_fmt->efi_nextents = src_efi_fmt_64->efi_nextents; | |
312 | dst_efi_fmt->efi_id = src_efi_fmt_64->efi_id; | |
313 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
314 | dst_efi_fmt->efi_extents[i].ext_start = | |
315 | src_efi_fmt_64->efi_extents[i].ext_start; | |
316 | dst_efi_fmt->efi_extents[i].ext_len = | |
317 | src_efi_fmt_64->efi_extents[i].ext_len; | |
318 | } | |
319 | return 0; | |
320 | } | |
321 | return EFSCORRUPTED; | |
322 | } | |
323 | ||
1da177e4 LT |
324 | /* |
325 | * This is called by the efd item code below to release references to | |
326 | * the given efi item. Each efd calls this with the number of | |
327 | * extents that it has logged, and when the sum of these reaches | |
328 | * the total number of extents logged by this efi item we can free | |
329 | * the efi item. | |
330 | * | |
331 | * Freeing the efi item requires that we remove it from the AIL. | |
332 | * We'll use the AIL lock to protect our counters as well as | |
333 | * the removal from the AIL. | |
334 | */ | |
335 | void | |
336 | xfs_efi_release(xfs_efi_log_item_t *efip, | |
337 | uint nextents) | |
338 | { | |
783a2f65 | 339 | struct xfs_ail *ailp = efip->efi_item.li_ailp; |
fc1829f3 | 340 | int extents_left; |
1da177e4 | 341 | |
1da177e4 LT |
342 | ASSERT(efip->efi_next_extent > 0); |
343 | ASSERT(efip->efi_flags & XFS_EFI_COMMITTED); | |
344 | ||
fc1829f3 | 345 | spin_lock(&ailp->xa_lock); |
1da177e4 LT |
346 | ASSERT(efip->efi_next_extent >= nextents); |
347 | efip->efi_next_extent -= nextents; | |
348 | extents_left = efip->efi_next_extent; | |
349 | if (extents_left == 0) { | |
783a2f65 DC |
350 | /* xfs_trans_ail_delete() drops the AIL lock. */ |
351 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)efip); | |
7d795ca3 | 352 | xfs_efi_item_free(efip); |
1da177e4 | 353 | } else { |
fc1829f3 | 354 | spin_unlock(&ailp->xa_lock); |
1da177e4 | 355 | } |
1da177e4 LT |
356 | } |
357 | ||
7d795ca3 CH |
358 | STATIC void |
359 | xfs_efd_item_free(xfs_efd_log_item_t *efdp) | |
360 | { | |
361 | int nexts = efdp->efd_format.efd_nextents; | |
1da177e4 | 362 | |
7d795ca3 | 363 | if (nexts > XFS_EFD_MAX_FAST_EXTENTS) { |
f0e2d93c | 364 | kmem_free(efdp); |
7d795ca3 CH |
365 | } else { |
366 | kmem_zone_free(xfs_efd_zone, efdp); | |
367 | } | |
368 | } | |
1da177e4 LT |
369 | |
370 | /* | |
371 | * This returns the number of iovecs needed to log the given efd item. | |
372 | * We only need 1 iovec for an efd item. It just logs the efd_log_format | |
373 | * structure. | |
374 | */ | |
375 | /*ARGSUSED*/ | |
376 | STATIC uint | |
377 | xfs_efd_item_size(xfs_efd_log_item_t *efdp) | |
378 | { | |
379 | return 1; | |
380 | } | |
381 | ||
382 | /* | |
383 | * This is called to fill in the vector of log iovecs for the | |
384 | * given efd log item. We use only 1 iovec, and we point that | |
385 | * at the efd_log_format structure embedded in the efd item. | |
386 | * It is at this point that we assert that all of the extent | |
387 | * slots in the efd item have been filled. | |
388 | */ | |
389 | STATIC void | |
390 | xfs_efd_item_format(xfs_efd_log_item_t *efdp, | |
391 | xfs_log_iovec_t *log_vector) | |
392 | { | |
393 | uint size; | |
394 | ||
395 | ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents); | |
396 | ||
397 | efdp->efd_format.efd_type = XFS_LI_EFD; | |
398 | ||
399 | size = sizeof(xfs_efd_log_format_t); | |
400 | size += (efdp->efd_format.efd_nextents - 1) * sizeof(xfs_extent_t); | |
401 | efdp->efd_format.efd_size = 1; | |
402 | ||
403 | log_vector->i_addr = (xfs_caddr_t)&(efdp->efd_format); | |
404 | log_vector->i_len = size; | |
4139b3b3 | 405 | log_vector->i_type = XLOG_REG_TYPE_EFD_FORMAT; |
1da177e4 LT |
406 | ASSERT(size >= sizeof(xfs_efd_log_format_t)); |
407 | } | |
408 | ||
409 | ||
410 | /* | |
411 | * Pinning has no meaning for an efd item, so just return. | |
412 | */ | |
413 | /*ARGSUSED*/ | |
414 | STATIC void | |
415 | xfs_efd_item_pin(xfs_efd_log_item_t *efdp) | |
416 | { | |
417 | return; | |
418 | } | |
419 | ||
420 | ||
421 | /* | |
422 | * Since pinning has no meaning for an efd item, unpinning does | |
423 | * not either. | |
424 | */ | |
425 | /*ARGSUSED*/ | |
426 | STATIC void | |
8e123850 | 427 | xfs_efd_item_unpin(xfs_efd_log_item_t *efdp) |
1da177e4 LT |
428 | { |
429 | return; | |
430 | } | |
431 | ||
432 | /*ARGSUSED*/ | |
433 | STATIC void | |
434 | xfs_efd_item_unpin_remove(xfs_efd_log_item_t *efdp, xfs_trans_t *tp) | |
435 | { | |
436 | return; | |
437 | } | |
438 | ||
439 | /* | |
440 | * Efd items have no locking, so just return success. | |
441 | */ | |
442 | /*ARGSUSED*/ | |
443 | STATIC uint | |
444 | xfs_efd_item_trylock(xfs_efd_log_item_t *efdp) | |
445 | { | |
446 | return XFS_ITEM_LOCKED; | |
447 | } | |
448 | ||
449 | /* | |
450 | * Efd items have no locking or pushing, so return failure | |
451 | * so that the caller doesn't bother with us. | |
452 | */ | |
453 | /*ARGSUSED*/ | |
454 | STATIC void | |
455 | xfs_efd_item_unlock(xfs_efd_log_item_t *efdp) | |
456 | { | |
457 | if (efdp->efd_item.li_flags & XFS_LI_ABORTED) | |
065d312e | 458 | xfs_efd_item_free(efdp); |
1da177e4 LT |
459 | return; |
460 | } | |
461 | ||
462 | /* | |
463 | * When the efd item is committed to disk, all we need to do | |
464 | * is delete our reference to our partner efi item and then | |
465 | * free ourselves. Since we're freeing ourselves we must | |
466 | * return -1 to keep the transaction code from further referencing | |
467 | * this item. | |
468 | */ | |
469 | /*ARGSUSED*/ | |
470 | STATIC xfs_lsn_t | |
471 | xfs_efd_item_committed(xfs_efd_log_item_t *efdp, xfs_lsn_t lsn) | |
472 | { | |
1da177e4 LT |
473 | /* |
474 | * If we got a log I/O error, it's always the case that the LR with the | |
475 | * EFI got unpinned and freed before the EFD got aborted. | |
476 | */ | |
477 | if ((efdp->efd_item.li_flags & XFS_LI_ABORTED) == 0) | |
478 | xfs_efi_release(efdp->efd_efip, efdp->efd_format.efd_nextents); | |
479 | ||
7d795ca3 | 480 | xfs_efd_item_free(efdp); |
1da177e4 LT |
481 | return (xfs_lsn_t)-1; |
482 | } | |
483 | ||
1da177e4 LT |
484 | /* |
485 | * There isn't much you can do to push on an efd item. It is simply | |
486 | * stuck waiting for the log to be flushed to disk. | |
487 | */ | |
488 | /*ARGSUSED*/ | |
489 | STATIC void | |
490 | xfs_efd_item_push(xfs_efd_log_item_t *efdp) | |
491 | { | |
492 | return; | |
493 | } | |
494 | ||
495 | /* | |
496 | * The EFD dependency tracking op doesn't do squat. It can't because | |
497 | * it doesn't know where the free extent is coming from. The dependency | |
498 | * tracking has to be handled by the "enclosing" metadata object. For | |
499 | * example, for inodes, the inode is locked throughout the extent freeing | |
500 | * so the dependency should be recorded there. | |
501 | */ | |
502 | /*ARGSUSED*/ | |
503 | STATIC void | |
504 | xfs_efd_item_committing(xfs_efd_log_item_t *efip, xfs_lsn_t lsn) | |
505 | { | |
506 | return; | |
507 | } | |
508 | ||
509 | /* | |
510 | * This is the ops vector shared by all efd log items. | |
511 | */ | |
7989cb8e | 512 | static struct xfs_item_ops xfs_efd_item_ops = { |
1da177e4 LT |
513 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_efd_item_size, |
514 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
515 | xfs_efd_item_format, | |
516 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_efd_item_pin, | |
8e123850 | 517 | .iop_unpin = (void(*)(xfs_log_item_t*))xfs_efd_item_unpin, |
1da177e4 LT |
518 | .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t*)) |
519 | xfs_efd_item_unpin_remove, | |
520 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_efd_item_trylock, | |
521 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_efd_item_unlock, | |
522 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
523 | xfs_efd_item_committed, | |
524 | .iop_push = (void(*)(xfs_log_item_t*))xfs_efd_item_push, | |
1da177e4 LT |
525 | .iop_pushbuf = NULL, |
526 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
527 | xfs_efd_item_committing | |
528 | }; | |
529 | ||
530 | ||
531 | /* | |
532 | * Allocate and initialize an efd item with the given number of extents. | |
533 | */ | |
534 | xfs_efd_log_item_t * | |
535 | xfs_efd_init(xfs_mount_t *mp, | |
536 | xfs_efi_log_item_t *efip, | |
537 | uint nextents) | |
538 | ||
539 | { | |
540 | xfs_efd_log_item_t *efdp; | |
541 | uint size; | |
542 | ||
543 | ASSERT(nextents > 0); | |
544 | if (nextents > XFS_EFD_MAX_FAST_EXTENTS) { | |
545 | size = (uint)(sizeof(xfs_efd_log_item_t) + | |
546 | ((nextents - 1) * sizeof(xfs_extent_t))); | |
547 | efdp = (xfs_efd_log_item_t*)kmem_zalloc(size, KM_SLEEP); | |
548 | } else { | |
549 | efdp = (xfs_efd_log_item_t*)kmem_zone_zalloc(xfs_efd_zone, | |
550 | KM_SLEEP); | |
551 | } | |
552 | ||
43f5efc5 | 553 | xfs_log_item_init(mp, &efdp->efd_item, XFS_LI_EFD, &xfs_efd_item_ops); |
1da177e4 LT |
554 | efdp->efd_efip = efip; |
555 | efdp->efd_format.efd_nextents = nextents; | |
556 | efdp->efd_format.efd_efi_id = efip->efi_format.efi_id; | |
557 | ||
558 | return (efdp); | |
559 | } |