Commit | Line | Data |
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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 | */ | |
1da177e4 | 106 | STATIC void |
9412e318 | 107 | xfs_efi_item_unpin(xfs_efi_log_item_t *efip, int remove) |
1da177e4 | 108 | { |
783a2f65 | 109 | struct xfs_ail *ailp = efip->efi_item.li_ailp; |
1da177e4 | 110 | |
fc1829f3 | 111 | spin_lock(&ailp->xa_lock); |
1da177e4 | 112 | if (efip->efi_flags & XFS_EFI_CANCELED) { |
e98c414f CH |
113 | struct xfs_log_item *lip = &efip->efi_item; |
114 | ||
9412e318 CH |
115 | if (remove) |
116 | xfs_trans_del_item(lip); | |
783a2f65 DC |
117 | |
118 | /* xfs_trans_ail_delete() drops the AIL lock. */ | |
e98c414f | 119 | xfs_trans_ail_delete(ailp, lip); |
7d795ca3 | 120 | xfs_efi_item_free(efip); |
1da177e4 LT |
121 | } else { |
122 | efip->efi_flags |= XFS_EFI_COMMITTED; | |
fc1829f3 | 123 | spin_unlock(&ailp->xa_lock); |
1da177e4 | 124 | } |
1da177e4 LT |
125 | } |
126 | ||
127 | /* | |
128 | * Efi items have no locking or pushing. However, since EFIs are | |
129 | * pulled from the AIL when their corresponding EFDs are committed | |
130 | * to disk, their situation is very similar to being pinned. Return | |
131 | * XFS_ITEM_PINNED so that the caller will eventually flush the log. | |
132 | * This should help in getting the EFI out of the AIL. | |
133 | */ | |
134 | /*ARGSUSED*/ | |
135 | STATIC uint | |
136 | xfs_efi_item_trylock(xfs_efi_log_item_t *efip) | |
137 | { | |
138 | return XFS_ITEM_PINNED; | |
139 | } | |
140 | ||
141 | /* | |
142 | * Efi items have no locking, so just return. | |
143 | */ | |
144 | /*ARGSUSED*/ | |
145 | STATIC void | |
146 | xfs_efi_item_unlock(xfs_efi_log_item_t *efip) | |
147 | { | |
148 | if (efip->efi_item.li_flags & XFS_LI_ABORTED) | |
065d312e | 149 | xfs_efi_item_free(efip); |
1da177e4 LT |
150 | return; |
151 | } | |
152 | ||
153 | /* | |
154 | * The EFI is logged only once and cannot be moved in the log, so | |
155 | * simply return the lsn at which it's been logged. The canceled | |
156 | * flag is not paid any attention here. Checking for that is delayed | |
157 | * until the EFI is unpinned. | |
158 | */ | |
159 | /*ARGSUSED*/ | |
160 | STATIC xfs_lsn_t | |
161 | xfs_efi_item_committed(xfs_efi_log_item_t *efip, xfs_lsn_t lsn) | |
162 | { | |
163 | return lsn; | |
164 | } | |
165 | ||
1da177e4 LT |
166 | /* |
167 | * There isn't much you can do to push on an efi item. It is simply | |
168 | * stuck waiting for all of its corresponding efd items to be | |
169 | * committed to disk. | |
170 | */ | |
171 | /*ARGSUSED*/ | |
172 | STATIC void | |
173 | xfs_efi_item_push(xfs_efi_log_item_t *efip) | |
174 | { | |
175 | return; | |
176 | } | |
177 | ||
178 | /* | |
179 | * The EFI dependency tracking op doesn't do squat. It can't because | |
180 | * it doesn't know where the free extent is coming from. The dependency | |
181 | * tracking has to be handled by the "enclosing" metadata object. For | |
182 | * example, for inodes, the inode is locked throughout the extent freeing | |
183 | * so the dependency should be recorded there. | |
184 | */ | |
185 | /*ARGSUSED*/ | |
186 | STATIC void | |
187 | xfs_efi_item_committing(xfs_efi_log_item_t *efip, xfs_lsn_t lsn) | |
188 | { | |
189 | return; | |
190 | } | |
191 | ||
192 | /* | |
193 | * This is the ops vector shared by all efi log items. | |
194 | */ | |
7989cb8e | 195 | static struct xfs_item_ops xfs_efi_item_ops = { |
1da177e4 LT |
196 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_efi_item_size, |
197 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
198 | xfs_efi_item_format, | |
199 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_efi_item_pin, | |
9412e318 | 200 | .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_efi_item_unpin, |
1da177e4 LT |
201 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_efi_item_trylock, |
202 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_efi_item_unlock, | |
203 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
204 | xfs_efi_item_committed, | |
205 | .iop_push = (void(*)(xfs_log_item_t*))xfs_efi_item_push, | |
1da177e4 LT |
206 | .iop_pushbuf = NULL, |
207 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
208 | xfs_efi_item_committing | |
209 | }; | |
210 | ||
211 | ||
212 | /* | |
213 | * Allocate and initialize an efi item with the given number of extents. | |
214 | */ | |
215 | xfs_efi_log_item_t * | |
216 | xfs_efi_init(xfs_mount_t *mp, | |
217 | uint nextents) | |
218 | ||
219 | { | |
220 | xfs_efi_log_item_t *efip; | |
221 | uint size; | |
222 | ||
223 | ASSERT(nextents > 0); | |
224 | if (nextents > XFS_EFI_MAX_FAST_EXTENTS) { | |
225 | size = (uint)(sizeof(xfs_efi_log_item_t) + | |
226 | ((nextents - 1) * sizeof(xfs_extent_t))); | |
227 | efip = (xfs_efi_log_item_t*)kmem_zalloc(size, KM_SLEEP); | |
228 | } else { | |
229 | efip = (xfs_efi_log_item_t*)kmem_zone_zalloc(xfs_efi_zone, | |
230 | KM_SLEEP); | |
231 | } | |
232 | ||
43f5efc5 | 233 | xfs_log_item_init(mp, &efip->efi_item, XFS_LI_EFI, &xfs_efi_item_ops); |
1da177e4 LT |
234 | efip->efi_format.efi_nextents = nextents; |
235 | efip->efi_format.efi_id = (__psint_t)(void*)efip; | |
236 | ||
237 | return (efip); | |
238 | } | |
239 | ||
6d192a9b TS |
240 | /* |
241 | * Copy an EFI format buffer from the given buf, and into the destination | |
242 | * EFI format structure. | |
243 | * The given buffer can be in 32 bit or 64 bit form (which has different padding), | |
244 | * one of which will be the native format for this kernel. | |
245 | * It will handle the conversion of formats if necessary. | |
246 | */ | |
247 | int | |
248 | xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt) | |
249 | { | |
250 | xfs_efi_log_format_t *src_efi_fmt = (xfs_efi_log_format_t *)buf->i_addr; | |
251 | uint i; | |
252 | uint len = sizeof(xfs_efi_log_format_t) + | |
253 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_t); | |
254 | uint len32 = sizeof(xfs_efi_log_format_32_t) + | |
255 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_32_t); | |
256 | uint len64 = sizeof(xfs_efi_log_format_64_t) + | |
257 | (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_64_t); | |
258 | ||
259 | if (buf->i_len == len) { | |
260 | memcpy((char *)dst_efi_fmt, (char*)src_efi_fmt, len); | |
261 | return 0; | |
262 | } else if (buf->i_len == len32) { | |
263 | xfs_efi_log_format_32_t *src_efi_fmt_32 = | |
264 | (xfs_efi_log_format_32_t *)buf->i_addr; | |
265 | ||
266 | dst_efi_fmt->efi_type = src_efi_fmt_32->efi_type; | |
267 | dst_efi_fmt->efi_size = src_efi_fmt_32->efi_size; | |
268 | dst_efi_fmt->efi_nextents = src_efi_fmt_32->efi_nextents; | |
269 | dst_efi_fmt->efi_id = src_efi_fmt_32->efi_id; | |
270 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
271 | dst_efi_fmt->efi_extents[i].ext_start = | |
272 | src_efi_fmt_32->efi_extents[i].ext_start; | |
273 | dst_efi_fmt->efi_extents[i].ext_len = | |
274 | src_efi_fmt_32->efi_extents[i].ext_len; | |
275 | } | |
276 | return 0; | |
277 | } else if (buf->i_len == len64) { | |
278 | xfs_efi_log_format_64_t *src_efi_fmt_64 = | |
279 | (xfs_efi_log_format_64_t *)buf->i_addr; | |
280 | ||
281 | dst_efi_fmt->efi_type = src_efi_fmt_64->efi_type; | |
282 | dst_efi_fmt->efi_size = src_efi_fmt_64->efi_size; | |
283 | dst_efi_fmt->efi_nextents = src_efi_fmt_64->efi_nextents; | |
284 | dst_efi_fmt->efi_id = src_efi_fmt_64->efi_id; | |
285 | for (i = 0; i < dst_efi_fmt->efi_nextents; i++) { | |
286 | dst_efi_fmt->efi_extents[i].ext_start = | |
287 | src_efi_fmt_64->efi_extents[i].ext_start; | |
288 | dst_efi_fmt->efi_extents[i].ext_len = | |
289 | src_efi_fmt_64->efi_extents[i].ext_len; | |
290 | } | |
291 | return 0; | |
292 | } | |
293 | return EFSCORRUPTED; | |
294 | } | |
295 | ||
1da177e4 LT |
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 | { | |
783a2f65 | 311 | struct xfs_ail *ailp = efip->efi_item.li_ailp; |
fc1829f3 | 312 | int extents_left; |
1da177e4 | 313 | |
1da177e4 LT |
314 | ASSERT(efip->efi_next_extent > 0); |
315 | ASSERT(efip->efi_flags & XFS_EFI_COMMITTED); | |
316 | ||
fc1829f3 | 317 | spin_lock(&ailp->xa_lock); |
1da177e4 LT |
318 | ASSERT(efip->efi_next_extent >= nextents); |
319 | efip->efi_next_extent -= nextents; | |
320 | extents_left = efip->efi_next_extent; | |
321 | if (extents_left == 0) { | |
783a2f65 DC |
322 | /* xfs_trans_ail_delete() drops the AIL lock. */ |
323 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)efip); | |
7d795ca3 | 324 | xfs_efi_item_free(efip); |
1da177e4 | 325 | } else { |
fc1829f3 | 326 | spin_unlock(&ailp->xa_lock); |
1da177e4 | 327 | } |
1da177e4 LT |
328 | } |
329 | ||
7d795ca3 CH |
330 | STATIC void |
331 | xfs_efd_item_free(xfs_efd_log_item_t *efdp) | |
332 | { | |
333 | int nexts = efdp->efd_format.efd_nextents; | |
1da177e4 | 334 | |
7d795ca3 | 335 | if (nexts > XFS_EFD_MAX_FAST_EXTENTS) { |
f0e2d93c | 336 | kmem_free(efdp); |
7d795ca3 CH |
337 | } else { |
338 | kmem_zone_free(xfs_efd_zone, efdp); | |
339 | } | |
340 | } | |
1da177e4 LT |
341 | |
342 | /* | |
343 | * This returns the number of iovecs needed to log the given efd item. | |
344 | * We only need 1 iovec for an efd item. It just logs the efd_log_format | |
345 | * structure. | |
346 | */ | |
347 | /*ARGSUSED*/ | |
348 | STATIC uint | |
349 | xfs_efd_item_size(xfs_efd_log_item_t *efdp) | |
350 | { | |
351 | return 1; | |
352 | } | |
353 | ||
354 | /* | |
355 | * This is called to fill in the vector of log iovecs for the | |
356 | * given efd log item. We use only 1 iovec, and we point that | |
357 | * at the efd_log_format structure embedded in the efd item. | |
358 | * It is at this point that we assert that all of the extent | |
359 | * slots in the efd item have been filled. | |
360 | */ | |
361 | STATIC void | |
362 | xfs_efd_item_format(xfs_efd_log_item_t *efdp, | |
363 | xfs_log_iovec_t *log_vector) | |
364 | { | |
365 | uint size; | |
366 | ||
367 | ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents); | |
368 | ||
369 | efdp->efd_format.efd_type = XFS_LI_EFD; | |
370 | ||
371 | size = sizeof(xfs_efd_log_format_t); | |
372 | size += (efdp->efd_format.efd_nextents - 1) * sizeof(xfs_extent_t); | |
373 | efdp->efd_format.efd_size = 1; | |
374 | ||
375 | log_vector->i_addr = (xfs_caddr_t)&(efdp->efd_format); | |
376 | log_vector->i_len = size; | |
4139b3b3 | 377 | log_vector->i_type = XLOG_REG_TYPE_EFD_FORMAT; |
1da177e4 LT |
378 | ASSERT(size >= sizeof(xfs_efd_log_format_t)); |
379 | } | |
380 | ||
381 | ||
382 | /* | |
383 | * Pinning has no meaning for an efd item, so just return. | |
384 | */ | |
385 | /*ARGSUSED*/ | |
386 | STATIC void | |
387 | xfs_efd_item_pin(xfs_efd_log_item_t *efdp) | |
388 | { | |
389 | return; | |
390 | } | |
391 | ||
392 | ||
393 | /* | |
394 | * Since pinning has no meaning for an efd item, unpinning does | |
395 | * not either. | |
396 | */ | |
397 | /*ARGSUSED*/ | |
398 | STATIC void | |
9412e318 | 399 | xfs_efd_item_unpin(xfs_efd_log_item_t *efdp, int remove) |
1da177e4 LT |
400 | { |
401 | return; | |
402 | } | |
403 | ||
404 | /* | |
405 | * Efd items have no locking, so just return success. | |
406 | */ | |
407 | /*ARGSUSED*/ | |
408 | STATIC uint | |
409 | xfs_efd_item_trylock(xfs_efd_log_item_t *efdp) | |
410 | { | |
411 | return XFS_ITEM_LOCKED; | |
412 | } | |
413 | ||
414 | /* | |
415 | * Efd items have no locking or pushing, so return failure | |
416 | * so that the caller doesn't bother with us. | |
417 | */ | |
418 | /*ARGSUSED*/ | |
419 | STATIC void | |
420 | xfs_efd_item_unlock(xfs_efd_log_item_t *efdp) | |
421 | { | |
422 | if (efdp->efd_item.li_flags & XFS_LI_ABORTED) | |
065d312e | 423 | xfs_efd_item_free(efdp); |
1da177e4 LT |
424 | return; |
425 | } | |
426 | ||
427 | /* | |
428 | * When the efd item is committed to disk, all we need to do | |
429 | * is delete our reference to our partner efi item and then | |
430 | * free ourselves. Since we're freeing ourselves we must | |
431 | * return -1 to keep the transaction code from further referencing | |
432 | * this item. | |
433 | */ | |
434 | /*ARGSUSED*/ | |
435 | STATIC xfs_lsn_t | |
436 | xfs_efd_item_committed(xfs_efd_log_item_t *efdp, xfs_lsn_t lsn) | |
437 | { | |
1da177e4 LT |
438 | /* |
439 | * If we got a log I/O error, it's always the case that the LR with the | |
440 | * EFI got unpinned and freed before the EFD got aborted. | |
441 | */ | |
442 | if ((efdp->efd_item.li_flags & XFS_LI_ABORTED) == 0) | |
443 | xfs_efi_release(efdp->efd_efip, efdp->efd_format.efd_nextents); | |
444 | ||
7d795ca3 | 445 | xfs_efd_item_free(efdp); |
1da177e4 LT |
446 | return (xfs_lsn_t)-1; |
447 | } | |
448 | ||
1da177e4 LT |
449 | /* |
450 | * There isn't much you can do to push on an efd item. It is simply | |
451 | * stuck waiting for the log to be flushed to disk. | |
452 | */ | |
453 | /*ARGSUSED*/ | |
454 | STATIC void | |
455 | xfs_efd_item_push(xfs_efd_log_item_t *efdp) | |
456 | { | |
457 | return; | |
458 | } | |
459 | ||
460 | /* | |
461 | * The EFD dependency tracking op doesn't do squat. It can't because | |
462 | * it doesn't know where the free extent is coming from. The dependency | |
463 | * tracking has to be handled by the "enclosing" metadata object. For | |
464 | * example, for inodes, the inode is locked throughout the extent freeing | |
465 | * so the dependency should be recorded there. | |
466 | */ | |
467 | /*ARGSUSED*/ | |
468 | STATIC void | |
469 | xfs_efd_item_committing(xfs_efd_log_item_t *efip, xfs_lsn_t lsn) | |
470 | { | |
471 | return; | |
472 | } | |
473 | ||
474 | /* | |
475 | * This is the ops vector shared by all efd log items. | |
476 | */ | |
7989cb8e | 477 | static struct xfs_item_ops xfs_efd_item_ops = { |
1da177e4 LT |
478 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_efd_item_size, |
479 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) | |
480 | xfs_efd_item_format, | |
481 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_efd_item_pin, | |
9412e318 | 482 | .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_efd_item_unpin, |
1da177e4 LT |
483 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_efd_item_trylock, |
484 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_efd_item_unlock, | |
485 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) | |
486 | xfs_efd_item_committed, | |
487 | .iop_push = (void(*)(xfs_log_item_t*))xfs_efd_item_push, | |
1da177e4 LT |
488 | .iop_pushbuf = NULL, |
489 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) | |
490 | xfs_efd_item_committing | |
491 | }; | |
492 | ||
493 | ||
494 | /* | |
495 | * Allocate and initialize an efd item with the given number of extents. | |
496 | */ | |
497 | xfs_efd_log_item_t * | |
498 | xfs_efd_init(xfs_mount_t *mp, | |
499 | xfs_efi_log_item_t *efip, | |
500 | uint nextents) | |
501 | ||
502 | { | |
503 | xfs_efd_log_item_t *efdp; | |
504 | uint size; | |
505 | ||
506 | ASSERT(nextents > 0); | |
507 | if (nextents > XFS_EFD_MAX_FAST_EXTENTS) { | |
508 | size = (uint)(sizeof(xfs_efd_log_item_t) + | |
509 | ((nextents - 1) * sizeof(xfs_extent_t))); | |
510 | efdp = (xfs_efd_log_item_t*)kmem_zalloc(size, KM_SLEEP); | |
511 | } else { | |
512 | efdp = (xfs_efd_log_item_t*)kmem_zone_zalloc(xfs_efd_zone, | |
513 | KM_SLEEP); | |
514 | } | |
515 | ||
43f5efc5 | 516 | xfs_log_item_init(mp, &efdp->efd_item, XFS_LI_EFD, &xfs_efd_item_ops); |
1da177e4 LT |
517 | efdp->efd_efip = efip; |
518 | efdp->efd_format.efd_nextents = nextents; | |
519 | efdp->efd_format.efd_efi_id = efip->efi_format.efi_id; | |
520 | ||
521 | return (efdp); | |
522 | } |