Commit | Line | Data |
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1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2003 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f 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 | * | |
4ce3121f 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 | * |
4ce3121f 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 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
6ca1c906 | 20 | #include "xfs_format.h" |
1da177e4 LT |
21 | #include "xfs_log.h" |
22 | #include "xfs_trans.h" | |
23 | #include "xfs_sb.h" | |
24 | #include "xfs_ag.h" | |
1da177e4 | 25 | #include "xfs_alloc.h" |
1da177e4 LT |
26 | #include "xfs_quota.h" |
27 | #include "xfs_mount.h" | |
1da177e4 | 28 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
29 | #include "xfs_inode.h" |
30 | #include "xfs_bmap.h" | |
1da177e4 LT |
31 | #include "xfs_rtalloc.h" |
32 | #include "xfs_error.h" | |
33 | #include "xfs_itable.h" | |
1da177e4 LT |
34 | #include "xfs_attr.h" |
35 | #include "xfs_buf_item.h" | |
36 | #include "xfs_trans_priv.h" | |
1da177e4 LT |
37 | #include "xfs_qm.h" |
38 | ||
7bfa31d8 CH |
39 | static inline struct xfs_dq_logitem *DQUOT_ITEM(struct xfs_log_item *lip) |
40 | { | |
41 | return container_of(lip, struct xfs_dq_logitem, qli_item); | |
42 | } | |
43 | ||
1da177e4 LT |
44 | /* |
45 | * returns the number of iovecs needed to log the given dquot item. | |
46 | */ | |
166d1368 | 47 | STATIC void |
1da177e4 | 48 | xfs_qm_dquot_logitem_size( |
166d1368 DC |
49 | struct xfs_log_item *lip, |
50 | int *nvecs, | |
51 | int *nbytes) | |
1da177e4 | 52 | { |
166d1368 DC |
53 | *nvecs += 2; |
54 | *nbytes += sizeof(struct xfs_dq_logformat) + | |
55 | sizeof(struct xfs_disk_dquot); | |
1da177e4 LT |
56 | } |
57 | ||
58 | /* | |
59 | * fills in the vector of log iovecs for the given dquot log item. | |
60 | */ | |
61 | STATIC void | |
62 | xfs_qm_dquot_logitem_format( | |
7bfa31d8 CH |
63 | struct xfs_log_item *lip, |
64 | struct xfs_log_iovec *logvec) | |
1da177e4 | 65 | { |
7bfa31d8 | 66 | struct xfs_dq_logitem *qlip = DQUOT_ITEM(lip); |
1da177e4 | 67 | |
4e0d5f92 | 68 | logvec->i_addr = &qlip->qli_format; |
1da177e4 | 69 | logvec->i_len = sizeof(xfs_dq_logformat_t); |
4139b3b3 | 70 | logvec->i_type = XLOG_REG_TYPE_QFORMAT; |
1da177e4 | 71 | logvec++; |
4e0d5f92 | 72 | logvec->i_addr = &qlip->qli_dquot->q_core; |
1da177e4 | 73 | logvec->i_len = sizeof(xfs_disk_dquot_t); |
4139b3b3 | 74 | logvec->i_type = XLOG_REG_TYPE_DQUOT; |
1da177e4 | 75 | |
7bfa31d8 | 76 | qlip->qli_format.qlf_size = 2; |
1da177e4 LT |
77 | |
78 | } | |
79 | ||
80 | /* | |
81 | * Increment the pin count of the given dquot. | |
1da177e4 LT |
82 | */ |
83 | STATIC void | |
84 | xfs_qm_dquot_logitem_pin( | |
7bfa31d8 | 85 | struct xfs_log_item *lip) |
1da177e4 | 86 | { |
7bfa31d8 | 87 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 88 | |
1da177e4 | 89 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
d1de8021 | 90 | atomic_inc(&dqp->q_pincount); |
1da177e4 LT |
91 | } |
92 | ||
93 | /* | |
94 | * Decrement the pin count of the given dquot, and wake up | |
95 | * anyone in xfs_dqwait_unpin() if the count goes to 0. The | |
bc3048e3 PL |
96 | * dquot must have been previously pinned with a call to |
97 | * xfs_qm_dquot_logitem_pin(). | |
1da177e4 | 98 | */ |
1da177e4 LT |
99 | STATIC void |
100 | xfs_qm_dquot_logitem_unpin( | |
7bfa31d8 | 101 | struct xfs_log_item *lip, |
9412e318 | 102 | int remove) |
1da177e4 | 103 | { |
7bfa31d8 | 104 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 105 | |
bc3048e3 PL |
106 | ASSERT(atomic_read(&dqp->q_pincount) > 0); |
107 | if (atomic_dec_and_test(&dqp->q_pincount)) | |
108 | wake_up(&dqp->q_pinwait); | |
1da177e4 LT |
109 | } |
110 | ||
1da177e4 LT |
111 | STATIC xfs_lsn_t |
112 | xfs_qm_dquot_logitem_committed( | |
7bfa31d8 | 113 | struct xfs_log_item *lip, |
1da177e4 LT |
114 | xfs_lsn_t lsn) |
115 | { | |
116 | /* | |
117 | * We always re-log the entire dquot when it becomes dirty, | |
118 | * so, the latest copy _is_ the only one that matters. | |
119 | */ | |
7bfa31d8 | 120 | return lsn; |
1da177e4 LT |
121 | } |
122 | ||
1da177e4 LT |
123 | /* |
124 | * This is called to wait for the given dquot to be unpinned. | |
125 | * Most of these pin/unpin routines are plagiarized from inode code. | |
126 | */ | |
127 | void | |
128 | xfs_qm_dqunpin_wait( | |
7bfa31d8 | 129 | struct xfs_dquot *dqp) |
1da177e4 | 130 | { |
1da177e4 | 131 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
bc3048e3 | 132 | if (atomic_read(&dqp->q_pincount) == 0) |
1da177e4 | 133 | return; |
1da177e4 LT |
134 | |
135 | /* | |
136 | * Give the log a push so we don't wait here too long. | |
137 | */ | |
a14a348b | 138 | xfs_log_force(dqp->q_mount, 0); |
bc3048e3 | 139 | wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); |
1da177e4 LT |
140 | } |
141 | ||
1da177e4 | 142 | STATIC uint |
43ff2122 CH |
143 | xfs_qm_dquot_logitem_push( |
144 | struct xfs_log_item *lip, | |
145 | struct list_head *buffer_list) | |
1da177e4 | 146 | { |
7bfa31d8 | 147 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
43ff2122 CH |
148 | struct xfs_buf *bp = NULL; |
149 | uint rval = XFS_ITEM_SUCCESS; | |
150 | int error; | |
1da177e4 | 151 | |
bc3048e3 | 152 | if (atomic_read(&dqp->q_pincount) > 0) |
d808f617 | 153 | return XFS_ITEM_PINNED; |
1da177e4 | 154 | |
800b484e | 155 | if (!xfs_dqlock_nowait(dqp)) |
d808f617 | 156 | return XFS_ITEM_LOCKED; |
1da177e4 | 157 | |
fe7257fd CH |
158 | /* |
159 | * Re-check the pincount now that we stabilized the value by | |
160 | * taking the quota lock. | |
161 | */ | |
162 | if (atomic_read(&dqp->q_pincount) > 0) { | |
43ff2122 CH |
163 | rval = XFS_ITEM_PINNED; |
164 | goto out_unlock; | |
fe7257fd CH |
165 | } |
166 | ||
43ff2122 CH |
167 | /* |
168 | * Someone else is already flushing the dquot. Nothing we can do | |
169 | * here but wait for the flush to finish and remove the item from | |
170 | * the AIL. | |
171 | */ | |
e1f49cf2 | 172 | if (!xfs_dqflock_nowait(dqp)) { |
43ff2122 CH |
173 | rval = XFS_ITEM_FLUSHING; |
174 | goto out_unlock; | |
175 | } | |
176 | ||
177 | spin_unlock(&lip->li_ailp->xa_lock); | |
178 | ||
179 | error = xfs_qm_dqflush(dqp, &bp); | |
180 | if (error) { | |
181 | xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p", | |
182 | __func__, error, dqp); | |
183 | } else { | |
184 | if (!xfs_buf_delwri_queue(bp, buffer_list)) | |
185 | rval = XFS_ITEM_FLUSHING; | |
186 | xfs_buf_relse(bp); | |
1da177e4 LT |
187 | } |
188 | ||
43ff2122 CH |
189 | spin_lock(&lip->li_ailp->xa_lock); |
190 | out_unlock: | |
191 | xfs_dqunlock(dqp); | |
192 | return rval; | |
1da177e4 LT |
193 | } |
194 | ||
1da177e4 LT |
195 | /* |
196 | * Unlock the dquot associated with the log item. | |
197 | * Clear the fields of the dquot and dquot log item that | |
198 | * are specific to the current transaction. If the | |
199 | * hold flags is set, do not unlock the dquot. | |
200 | */ | |
201 | STATIC void | |
202 | xfs_qm_dquot_logitem_unlock( | |
7bfa31d8 | 203 | struct xfs_log_item *lip) |
1da177e4 | 204 | { |
7bfa31d8 | 205 | struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; |
1da177e4 | 206 | |
1da177e4 LT |
207 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
208 | ||
209 | /* | |
210 | * Clear the transaction pointer in the dquot | |
211 | */ | |
212 | dqp->q_transp = NULL; | |
213 | ||
214 | /* | |
215 | * dquots are never 'held' from getting unlocked at the end of | |
216 | * a transaction. Their locking and unlocking is hidden inside the | |
217 | * transaction layer, within trans_commit. Hence, no LI_HOLD flag | |
218 | * for the logitem. | |
219 | */ | |
220 | xfs_dqunlock(dqp); | |
221 | } | |
222 | ||
1da177e4 LT |
223 | /* |
224 | * this needs to stamp an lsn into the dquot, I think. | |
225 | * rpc's that look at user dquot's would then have to | |
226 | * push on the dependency recorded in the dquot | |
227 | */ | |
1da177e4 LT |
228 | STATIC void |
229 | xfs_qm_dquot_logitem_committing( | |
7bfa31d8 | 230 | struct xfs_log_item *lip, |
1da177e4 LT |
231 | xfs_lsn_t lsn) |
232 | { | |
1da177e4 LT |
233 | } |
234 | ||
1da177e4 LT |
235 | /* |
236 | * This is the ops vector for dquots | |
237 | */ | |
272e42b2 | 238 | static const struct xfs_item_ops xfs_dquot_item_ops = { |
7bfa31d8 CH |
239 | .iop_size = xfs_qm_dquot_logitem_size, |
240 | .iop_format = xfs_qm_dquot_logitem_format, | |
241 | .iop_pin = xfs_qm_dquot_logitem_pin, | |
242 | .iop_unpin = xfs_qm_dquot_logitem_unpin, | |
7bfa31d8 CH |
243 | .iop_unlock = xfs_qm_dquot_logitem_unlock, |
244 | .iop_committed = xfs_qm_dquot_logitem_committed, | |
245 | .iop_push = xfs_qm_dquot_logitem_push, | |
7bfa31d8 | 246 | .iop_committing = xfs_qm_dquot_logitem_committing |
1da177e4 LT |
247 | }; |
248 | ||
249 | /* | |
250 | * Initialize the dquot log item for a newly allocated dquot. | |
251 | * The dquot isn't locked at this point, but it isn't on any of the lists | |
252 | * either, so we don't care. | |
253 | */ | |
254 | void | |
255 | xfs_qm_dquot_logitem_init( | |
7bfa31d8 | 256 | struct xfs_dquot *dqp) |
1da177e4 | 257 | { |
7bfa31d8 | 258 | struct xfs_dq_logitem *lp = &dqp->q_logitem; |
1da177e4 | 259 | |
43f5efc5 DC |
260 | xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, |
261 | &xfs_dquot_item_ops); | |
1da177e4 LT |
262 | lp->qli_dquot = dqp; |
263 | lp->qli_format.qlf_type = XFS_LI_DQUOT; | |
1149d96a | 264 | lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); |
1da177e4 LT |
265 | lp->qli_format.qlf_blkno = dqp->q_blkno; |
266 | lp->qli_format.qlf_len = 1; | |
267 | /* | |
268 | * This is just the offset of this dquot within its buffer | |
269 | * (which is currently 1 FSB and probably won't change). | |
270 | * Hence 32 bits for this offset should be just fine. | |
271 | * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) | |
272 | * here, and recompute it at recovery time. | |
273 | */ | |
274 | lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; | |
275 | } | |
276 | ||
277 | /*------------------ QUOTAOFF LOG ITEMS -------------------*/ | |
278 | ||
7bfa31d8 CH |
279 | static inline struct xfs_qoff_logitem *QOFF_ITEM(struct xfs_log_item *lip) |
280 | { | |
281 | return container_of(lip, struct xfs_qoff_logitem, qql_item); | |
282 | } | |
283 | ||
284 | ||
1da177e4 LT |
285 | /* |
286 | * This returns the number of iovecs needed to log the given quotaoff item. | |
287 | * We only need 1 iovec for an quotaoff item. It just logs the | |
288 | * quotaoff_log_format structure. | |
289 | */ | |
166d1368 | 290 | STATIC void |
7bfa31d8 | 291 | xfs_qm_qoff_logitem_size( |
166d1368 DC |
292 | struct xfs_log_item *lip, |
293 | int *nvecs, | |
294 | int *nbytes) | |
1da177e4 | 295 | { |
166d1368 DC |
296 | *nvecs += 1; |
297 | *nbytes += sizeof(struct xfs_qoff_logitem); | |
1da177e4 LT |
298 | } |
299 | ||
300 | /* | |
301 | * This is called to fill in the vector of log iovecs for the | |
302 | * given quotaoff log item. We use only 1 iovec, and we point that | |
303 | * at the quotaoff_log_format structure embedded in the quotaoff item. | |
304 | * It is at this point that we assert that all of the extent | |
305 | * slots in the quotaoff item have been filled. | |
306 | */ | |
307 | STATIC void | |
7bfa31d8 CH |
308 | xfs_qm_qoff_logitem_format( |
309 | struct xfs_log_item *lip, | |
310 | struct xfs_log_iovec *log_vector) | |
1da177e4 | 311 | { |
7bfa31d8 | 312 | struct xfs_qoff_logitem *qflip = QOFF_ITEM(lip); |
1da177e4 | 313 | |
7bfa31d8 CH |
314 | ASSERT(qflip->qql_format.qf_type == XFS_LI_QUOTAOFF); |
315 | ||
4e0d5f92 | 316 | log_vector->i_addr = &qflip->qql_format; |
1da177e4 | 317 | log_vector->i_len = sizeof(xfs_qoff_logitem_t); |
4139b3b3 | 318 | log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; |
7bfa31d8 | 319 | qflip->qql_format.qf_size = 1; |
1da177e4 LT |
320 | } |
321 | ||
1da177e4 LT |
322 | /* |
323 | * Pinning has no meaning for an quotaoff item, so just return. | |
324 | */ | |
1da177e4 | 325 | STATIC void |
7bfa31d8 CH |
326 | xfs_qm_qoff_logitem_pin( |
327 | struct xfs_log_item *lip) | |
1da177e4 | 328 | { |
1da177e4 LT |
329 | } |
330 | ||
1da177e4 LT |
331 | /* |
332 | * Since pinning has no meaning for an quotaoff item, unpinning does | |
333 | * not either. | |
334 | */ | |
1da177e4 | 335 | STATIC void |
7bfa31d8 CH |
336 | xfs_qm_qoff_logitem_unpin( |
337 | struct xfs_log_item *lip, | |
338 | int remove) | |
1da177e4 | 339 | { |
1da177e4 LT |
340 | } |
341 | ||
342 | /* | |
43ff2122 CH |
343 | * There isn't much you can do to push a quotaoff item. It is simply |
344 | * stuck waiting for the log to be flushed to disk. | |
1da177e4 | 345 | */ |
1da177e4 | 346 | STATIC uint |
43ff2122 CH |
347 | xfs_qm_qoff_logitem_push( |
348 | struct xfs_log_item *lip, | |
349 | struct list_head *buffer_list) | |
1da177e4 LT |
350 | { |
351 | return XFS_ITEM_LOCKED; | |
352 | } | |
353 | ||
354 | /* | |
355 | * Quotaoff items have no locking or pushing, so return failure | |
356 | * so that the caller doesn't bother with us. | |
357 | */ | |
1da177e4 | 358 | STATIC void |
7bfa31d8 CH |
359 | xfs_qm_qoff_logitem_unlock( |
360 | struct xfs_log_item *lip) | |
1da177e4 | 361 | { |
1da177e4 LT |
362 | } |
363 | ||
364 | /* | |
365 | * The quotaoff-start-item is logged only once and cannot be moved in the log, | |
366 | * so simply return the lsn at which it's been logged. | |
367 | */ | |
1da177e4 | 368 | STATIC xfs_lsn_t |
7bfa31d8 CH |
369 | xfs_qm_qoff_logitem_committed( |
370 | struct xfs_log_item *lip, | |
371 | xfs_lsn_t lsn) | |
1da177e4 | 372 | { |
7bfa31d8 | 373 | return lsn; |
1da177e4 LT |
374 | } |
375 | ||
1da177e4 LT |
376 | STATIC xfs_lsn_t |
377 | xfs_qm_qoffend_logitem_committed( | |
7bfa31d8 CH |
378 | struct xfs_log_item *lip, |
379 | xfs_lsn_t lsn) | |
1da177e4 | 380 | { |
7bfa31d8 CH |
381 | struct xfs_qoff_logitem *qfe = QOFF_ITEM(lip); |
382 | struct xfs_qoff_logitem *qfs = qfe->qql_start_lip; | |
383 | struct xfs_ail *ailp = qfs->qql_item.li_ailp; | |
1da177e4 | 384 | |
1da177e4 LT |
385 | /* |
386 | * Delete the qoff-start logitem from the AIL. | |
783a2f65 | 387 | * xfs_trans_ail_delete() drops the AIL lock. |
1da177e4 | 388 | */ |
7bfa31d8 | 389 | spin_lock(&ailp->xa_lock); |
04913fdd | 390 | xfs_trans_ail_delete(ailp, &qfs->qql_item, SHUTDOWN_LOG_IO_ERROR); |
7bfa31d8 | 391 | |
f0e2d93c DV |
392 | kmem_free(qfs); |
393 | kmem_free(qfe); | |
1da177e4 LT |
394 | return (xfs_lsn_t)-1; |
395 | } | |
396 | ||
397 | /* | |
398 | * XXX rcc - don't know quite what to do with this. I think we can | |
399 | * just ignore it. The only time that isn't the case is if we allow | |
400 | * the client to somehow see that quotas have been turned off in which | |
401 | * we can't allow that to get back until the quotaoff hits the disk. | |
402 | * So how would that happen? Also, do we need different routines for | |
403 | * quotaoff start and quotaoff end? I suspect the answer is yes but | |
404 | * to be sure, I need to look at the recovery code and see how quota off | |
405 | * recovery is handled (do we roll forward or back or do something else). | |
406 | * If we roll forwards or backwards, then we need two separate routines, | |
407 | * one that does nothing and one that stamps in the lsn that matters | |
408 | * (truly makes the quotaoff irrevocable). If we do something else, | |
409 | * then maybe we don't need two. | |
410 | */ | |
1da177e4 | 411 | STATIC void |
7bfa31d8 CH |
412 | xfs_qm_qoff_logitem_committing( |
413 | struct xfs_log_item *lip, | |
414 | xfs_lsn_t commit_lsn) | |
1da177e4 | 415 | { |
1da177e4 LT |
416 | } |
417 | ||
272e42b2 | 418 | static const struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { |
7bfa31d8 CH |
419 | .iop_size = xfs_qm_qoff_logitem_size, |
420 | .iop_format = xfs_qm_qoff_logitem_format, | |
421 | .iop_pin = xfs_qm_qoff_logitem_pin, | |
422 | .iop_unpin = xfs_qm_qoff_logitem_unpin, | |
7bfa31d8 CH |
423 | .iop_unlock = xfs_qm_qoff_logitem_unlock, |
424 | .iop_committed = xfs_qm_qoffend_logitem_committed, | |
425 | .iop_push = xfs_qm_qoff_logitem_push, | |
426 | .iop_committing = xfs_qm_qoff_logitem_committing | |
1da177e4 LT |
427 | }; |
428 | ||
429 | /* | |
430 | * This is the ops vector shared by all quotaoff-start log items. | |
431 | */ | |
272e42b2 | 432 | static const struct xfs_item_ops xfs_qm_qoff_logitem_ops = { |
7bfa31d8 CH |
433 | .iop_size = xfs_qm_qoff_logitem_size, |
434 | .iop_format = xfs_qm_qoff_logitem_format, | |
435 | .iop_pin = xfs_qm_qoff_logitem_pin, | |
436 | .iop_unpin = xfs_qm_qoff_logitem_unpin, | |
7bfa31d8 CH |
437 | .iop_unlock = xfs_qm_qoff_logitem_unlock, |
438 | .iop_committed = xfs_qm_qoff_logitem_committed, | |
439 | .iop_push = xfs_qm_qoff_logitem_push, | |
440 | .iop_committing = xfs_qm_qoff_logitem_committing | |
1da177e4 LT |
441 | }; |
442 | ||
443 | /* | |
444 | * Allocate and initialize an quotaoff item of the correct quota type(s). | |
445 | */ | |
7bfa31d8 | 446 | struct xfs_qoff_logitem * |
1da177e4 | 447 | xfs_qm_qoff_logitem_init( |
7bfa31d8 CH |
448 | struct xfs_mount *mp, |
449 | struct xfs_qoff_logitem *start, | |
450 | uint flags) | |
1da177e4 | 451 | { |
7bfa31d8 | 452 | struct xfs_qoff_logitem *qf; |
1da177e4 | 453 | |
7bfa31d8 | 454 | qf = kmem_zalloc(sizeof(struct xfs_qoff_logitem), KM_SLEEP); |
1da177e4 | 455 | |
43f5efc5 DC |
456 | xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? |
457 | &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); | |
1da177e4 LT |
458 | qf->qql_item.li_mountp = mp; |
459 | qf->qql_format.qf_type = XFS_LI_QUOTAOFF; | |
460 | qf->qql_format.qf_flags = flags; | |
461 | qf->qql_start_lip = start; | |
7bfa31d8 | 462 | return qf; |
1da177e4 | 463 | } |