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1 | /* |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. |
4 | * |
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 |
7 | * published by the Free Software Foundation. |
8 | * |
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. |
13 | * |
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 |
17 | */ |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" |
20 | #include "xfs_types.h" |
21 | #include "xfs_bit.h" |
22 | #include "xfs_log.h" |
23 | #include "xfs_inum.h" |
24 | #include "xfs_trans.h" |
25 | #include "xfs_sb.h" |
26 | #include "xfs_ag.h" |
27 | #include "xfs_dmapi.h" |
28 | #include "xfs_mount.h" |
29 | #include "xfs_buf_item.h" |
30 | #include "xfs_trans_priv.h" |
31 | #include "xfs_error.h" |
32 | |
33 | |
34 | kmem_zone_t *xfs_buf_item_zone; |
35 | |
36 | #ifdef XFS_TRANS_DEBUG |
37 | /* |
38 | * This function uses an alternate strategy for tracking the bytes |
39 | * that the user requests to be logged. This can then be used |
40 | * in conjunction with the bli_orig array in the buf log item to |
41 | * catch bugs in our callers' code. |
42 | * |
43 | * We also double check the bits set in xfs_buf_item_log using a |
44 | * simple algorithm to check that every byte is accounted for. |
45 | */ |
46 | STATIC void |
47 | xfs_buf_item_log_debug( |
48 | xfs_buf_log_item_t *bip, |
49 | uint first, |
50 | uint last) |
51 | { |
52 | uint x; |
53 | uint byte; |
54 | uint nbytes; |
55 | uint chunk_num; |
56 | uint word_num; |
57 | uint bit_num; |
58 | uint bit_set; |
59 | uint *wordp; |
60 | |
61 | ASSERT(bip->bli_logged != NULL); |
62 | byte = first; |
63 | nbytes = last - first + 1; |
64 | bfset(bip->bli_logged, first, nbytes); |
65 | for (x = 0; x < nbytes; x++) { |
66 | chunk_num = byte >> XFS_BLI_SHIFT; |
67 | word_num = chunk_num >> BIT_TO_WORD_SHIFT; |
68 | bit_num = chunk_num & (NBWORD - 1); |
69 | wordp = &(bip->bli_format.blf_data_map[word_num]); |
70 | bit_set = *wordp & (1 << bit_num); |
71 | ASSERT(bit_set); |
72 | byte++; |
73 | } |
74 | } |
75 | |
76 | /* |
77 | * This function is called when we flush something into a buffer without |
78 | * logging it. This happens for things like inodes which are logged |
79 | * separately from the buffer. |
80 | */ |
81 | void |
82 | xfs_buf_item_flush_log_debug( |
83 | xfs_buf_t *bp, |
84 | uint first, |
85 | uint last) |
86 | { |
87 | xfs_buf_log_item_t *bip; |
88 | uint nbytes; |
89 | |
90 | bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*); |
91 | if ((bip == NULL) || (bip->bli_item.li_type != XFS_LI_BUF)) { |
92 | return; |
93 | } |
94 | |
95 | ASSERT(bip->bli_logged != NULL); |
96 | nbytes = last - first + 1; |
97 | bfset(bip->bli_logged, first, nbytes); |
98 | } |
99 | |
100 | /* |
101 | * This function is called to verify that our callers have logged |
102 | * all the bytes that they changed. |
103 | * |
104 | * It does this by comparing the original copy of the buffer stored in |
105 | * the buf log item's bli_orig array to the current copy of the buffer |
106 | * and ensuring that all bytes which mismatch are set in the bli_logged |
107 | * array of the buf log item. |
108 | */ |
109 | STATIC void |
110 | xfs_buf_item_log_check( |
111 | xfs_buf_log_item_t *bip) |
112 | { |
113 | char *orig; |
114 | char *buffer; |
115 | int x; |
116 | xfs_buf_t *bp; |
117 | |
118 | ASSERT(bip->bli_orig != NULL); |
119 | ASSERT(bip->bli_logged != NULL); |
120 | |
121 | bp = bip->bli_buf; |
122 | ASSERT(XFS_BUF_COUNT(bp) > 0); |
123 | ASSERT(XFS_BUF_PTR(bp) != NULL); |
124 | orig = bip->bli_orig; |
125 | buffer = XFS_BUF_PTR(bp); |
126 | for (x = 0; x < XFS_BUF_COUNT(bp); x++) { |
127 | if (orig[x] != buffer[x] && !btst(bip->bli_logged, x)) |
128 | cmn_err(CE_PANIC, |
129 | "xfs_buf_item_log_check bip %x buffer %x orig %x index %d", |
130 | bip, bp, orig, x); |
131 | } |
132 | } |
133 | #else |
134 | #define xfs_buf_item_log_debug(x,y,z) |
135 | #define xfs_buf_item_log_check(x) |
136 | #endif |
137 | |
138 | STATIC void xfs_buf_error_relse(xfs_buf_t *bp); |
139 | STATIC void xfs_buf_do_callbacks(xfs_buf_t *bp, xfs_log_item_t *lip); |
140 | |
141 | /* |
142 | * This returns the number of log iovecs needed to log the |
143 | * given buf log item. |
144 | * |
145 | * It calculates this as 1 iovec for the buf log format structure |
146 | * and 1 for each stretch of non-contiguous chunks to be logged. |
147 | * Contiguous chunks are logged in a single iovec. |
148 | * |
149 | * If the XFS_BLI_STALE flag has been set, then log nothing. |
150 | */ |
151 | STATIC uint |
152 | xfs_buf_item_size( |
153 | xfs_buf_log_item_t *bip) |
154 | { |
155 | uint nvecs; |
156 | int next_bit; |
157 | int last_bit; |
158 | xfs_buf_t *bp; |
159 | |
160 | ASSERT(atomic_read(&bip->bli_refcount) > 0); |
161 | if (bip->bli_flags & XFS_BLI_STALE) { |
162 | /* |
163 | * The buffer is stale, so all we need to log |
164 | * is the buf log format structure with the |
165 | * cancel flag in it. |
166 | */ |
167 | xfs_buf_item_trace("SIZE STALE", bip); |
168 | ASSERT(bip->bli_format.blf_flags & XFS_BLI_CANCEL); |
169 | return 1; |
170 | } |
171 | |
172 | bp = bip->bli_buf; |
173 | ASSERT(bip->bli_flags & XFS_BLI_LOGGED); |
174 | nvecs = 1; |
175 | last_bit = xfs_next_bit(bip->bli_format.blf_data_map, |
176 | bip->bli_format.blf_map_size, 0); |
177 | ASSERT(last_bit != -1); |
178 | nvecs++; |
179 | while (last_bit != -1) { |
180 | /* |
181 | * This takes the bit number to start looking from and |
182 | * returns the next set bit from there. It returns -1 |
183 | * if there are no more bits set or the start bit is |
184 | * beyond the end of the bitmap. |
185 | */ |
186 | next_bit = xfs_next_bit(bip->bli_format.blf_data_map, |
187 | bip->bli_format.blf_map_size, |
188 | last_bit + 1); |
189 | /* |
190 | * If we run out of bits, leave the loop, |
191 | * else if we find a new set of bits bump the number of vecs, |
192 | * else keep scanning the current set of bits. |
193 | */ |
194 | if (next_bit == -1) { |
195 | last_bit = -1; |
196 | } else if (next_bit != last_bit + 1) { |
197 | last_bit = next_bit; |
198 | nvecs++; |
199 | } else if (xfs_buf_offset(bp, next_bit * XFS_BLI_CHUNK) != |
200 | (xfs_buf_offset(bp, last_bit * XFS_BLI_CHUNK) + |
201 | XFS_BLI_CHUNK)) { |
202 | last_bit = next_bit; |
203 | nvecs++; |
204 | } else { |
205 | last_bit++; |
206 | } |
207 | } |
208 | |
209 | xfs_buf_item_trace("SIZE NORM", bip); |
210 | return nvecs; |
211 | } |
212 | |
213 | /* |
214 | * This is called to fill in the vector of log iovecs for the |
215 | * given log buf item. It fills the first entry with a buf log |
216 | * format structure, and the rest point to contiguous chunks |
217 | * within the buffer. |
218 | */ |
219 | STATIC void |
220 | xfs_buf_item_format( |
221 | xfs_buf_log_item_t *bip, |
222 | xfs_log_iovec_t *log_vector) |
223 | { |
224 | uint base_size; |
225 | uint nvecs; |
226 | xfs_log_iovec_t *vecp; |
227 | xfs_buf_t *bp; |
228 | int first_bit; |
229 | int last_bit; |
230 | int next_bit; |
231 | uint nbits; |
232 | uint buffer_offset; |
233 | |
234 | ASSERT(atomic_read(&bip->bli_refcount) > 0); |
235 | ASSERT((bip->bli_flags & XFS_BLI_LOGGED) || |
236 | (bip->bli_flags & XFS_BLI_STALE)); |
237 | bp = bip->bli_buf; |
238 | vecp = log_vector; |
239 | |
240 | /* |
241 | * The size of the base structure is the size of the |
242 | * declared structure plus the space for the extra words |
243 | * of the bitmap. We subtract one from the map size, because |
244 | * the first element of the bitmap is accounted for in the |
245 | * size of the base structure. |
246 | */ |
247 | base_size = |
248 | (uint)(sizeof(xfs_buf_log_format_t) + |
249 | ((bip->bli_format.blf_map_size - 1) * sizeof(uint))); |
250 | vecp->i_addr = (xfs_caddr_t)&bip->bli_format; |
251 | vecp->i_len = base_size; |
252 | XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BFORMAT); |
253 | vecp++; |
254 | nvecs = 1; |
255 | |
256 | if (bip->bli_flags & XFS_BLI_STALE) { |
257 | /* |
258 | * The buffer is stale, so all we need to log |
259 | * is the buf log format structure with the |
260 | * cancel flag in it. |
261 | */ |
262 | xfs_buf_item_trace("FORMAT STALE", bip); |
263 | ASSERT(bip->bli_format.blf_flags & XFS_BLI_CANCEL); |
264 | bip->bli_format.blf_size = nvecs; |
265 | return; |
266 | } |
267 | |
268 | /* |
269 | * Fill in an iovec for each set of contiguous chunks. |
270 | */ |
271 | first_bit = xfs_next_bit(bip->bli_format.blf_data_map, |
272 | bip->bli_format.blf_map_size, 0); |
273 | ASSERT(first_bit != -1); |
274 | last_bit = first_bit; |
275 | nbits = 1; |
276 | for (;;) { |
277 | /* |
278 | * This takes the bit number to start looking from and |
279 | * returns the next set bit from there. It returns -1 |
280 | * if there are no more bits set or the start bit is |
281 | * beyond the end of the bitmap. |
282 | */ |
283 | next_bit = xfs_next_bit(bip->bli_format.blf_data_map, |
284 | bip->bli_format.blf_map_size, |
285 | (uint)last_bit + 1); |
286 | /* |
287 | * If we run out of bits fill in the last iovec and get |
288 | * out of the loop. |
289 | * Else if we start a new set of bits then fill in the |
290 | * iovec for the series we were looking at and start |
291 | * counting the bits in the new one. |
292 | * Else we're still in the same set of bits so just |
293 | * keep counting and scanning. |
294 | */ |
295 | if (next_bit == -1) { |
296 | buffer_offset = first_bit * XFS_BLI_CHUNK; |
297 | vecp->i_addr = xfs_buf_offset(bp, buffer_offset); |
298 | vecp->i_len = nbits * XFS_BLI_CHUNK; |
299 | XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK); |
300 | nvecs++; |
301 | break; |
302 | } else if (next_bit != last_bit + 1) { |
303 | buffer_offset = first_bit * XFS_BLI_CHUNK; |
304 | vecp->i_addr = xfs_buf_offset(bp, buffer_offset); |
305 | vecp->i_len = nbits * XFS_BLI_CHUNK; |
306 | XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK); |
307 | nvecs++; |
308 | vecp++; |
309 | first_bit = next_bit; |
310 | last_bit = next_bit; |
311 | nbits = 1; |
312 | } else if (xfs_buf_offset(bp, next_bit << XFS_BLI_SHIFT) != |
313 | (xfs_buf_offset(bp, last_bit << XFS_BLI_SHIFT) + |
314 | XFS_BLI_CHUNK)) { |
315 | buffer_offset = first_bit * XFS_BLI_CHUNK; |
316 | vecp->i_addr = xfs_buf_offset(bp, buffer_offset); |
317 | vecp->i_len = nbits * XFS_BLI_CHUNK; |
318 | XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK); |
319 | /* You would think we need to bump the nvecs here too, but we do not |
320 | * this number is used by recovery, and it gets confused by the boundary |
321 | * split here |
322 | * nvecs++; |
323 | */ |
324 | vecp++; |
325 | first_bit = next_bit; |
326 | last_bit = next_bit; |
327 | nbits = 1; |
328 | } else { |
329 | last_bit++; |
330 | nbits++; |
331 | } |
332 | } |
333 | bip->bli_format.blf_size = nvecs; |
334 | |
335 | /* |
336 | * Check to make sure everything is consistent. |
337 | */ |
338 | xfs_buf_item_trace("FORMAT NORM", bip); |
339 | xfs_buf_item_log_check(bip); |
340 | } |
341 | |
342 | /* |
343 | * This is called to pin the buffer associated with the buf log |
344 | * item in memory so it cannot be written out. Simply call bpin() |
345 | * on the buffer to do this. |
346 | */ |
347 | STATIC void |
348 | xfs_buf_item_pin( |
349 | xfs_buf_log_item_t *bip) |
350 | { |
351 | xfs_buf_t *bp; |
352 | |
353 | bp = bip->bli_buf; |
354 | ASSERT(XFS_BUF_ISBUSY(bp)); |
355 | ASSERT(atomic_read(&bip->bli_refcount) > 0); |
356 | ASSERT((bip->bli_flags & XFS_BLI_LOGGED) || |
357 | (bip->bli_flags & XFS_BLI_STALE)); |
358 | xfs_buf_item_trace("PIN", bip); |
359 | xfs_buftrace("XFS_PIN", bp); |
360 | xfs_bpin(bp); |
361 | } |
362 | |
363 | |
364 | /* |
365 | * This is called to unpin the buffer associated with the buf log |
366 | * item which was previously pinned with a call to xfs_buf_item_pin(). |
367 | * Just call bunpin() on the buffer to do this. |
368 | * |
369 | * Also drop the reference to the buf item for the current transaction. |
370 | * If the XFS_BLI_STALE flag is set and we are the last reference, |
371 | * then free up the buf log item and unlock the buffer. |
372 | */ |
373 | STATIC void |
374 | xfs_buf_item_unpin( |
375 | xfs_buf_log_item_t *bip, |
376 | int stale) |
377 | { |
378 | struct xfs_ail *ailp; |
379 | xfs_buf_t *bp; |
380 | int freed; |
381 | |
382 | bp = bip->bli_buf; |
383 | ASSERT(bp != NULL); |
384 | ASSERT(XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *) == bip); |
385 | ASSERT(atomic_read(&bip->bli_refcount) > 0); |
386 | xfs_buf_item_trace("UNPIN", bip); |
387 | xfs_buftrace("XFS_UNPIN", bp); |
388 | |
389 | freed = atomic_dec_and_test(&bip->bli_refcount); |
390 | ailp = bip->bli_item.li_ailp; |
391 | xfs_bunpin(bp); |
392 | if (freed && stale) { |
393 | ASSERT(bip->bli_flags & XFS_BLI_STALE); |
394 | ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); |
395 | ASSERT(!(XFS_BUF_ISDELAYWRITE(bp))); |
396 | ASSERT(XFS_BUF_ISSTALE(bp)); |
397 | ASSERT(bip->bli_format.blf_flags & XFS_BLI_CANCEL); |
398 | xfs_buf_item_trace("UNPIN STALE", bip); |
399 | xfs_buftrace("XFS_UNPIN STALE", bp); |
400 | /* |
401 | * If we get called here because of an IO error, we may |
402 | * or may not have the item on the AIL. xfs_trans_ail_delete() |
403 | * will take care of that situation. |
404 | * xfs_trans_ail_delete() drops the AIL lock. |
405 | */ |
406 | if (bip->bli_flags & XFS_BLI_STALE_INODE) { |
407 | xfs_buf_do_callbacks(bp, (xfs_log_item_t *)bip); |
408 | XFS_BUF_SET_FSPRIVATE(bp, NULL); |
409 | XFS_BUF_CLR_IODONE_FUNC(bp); |
410 | } else { |
411 | spin_lock(&ailp->xa_lock); |
412 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)bip); |
413 | xfs_buf_item_relse(bp); |
414 | ASSERT(XFS_BUF_FSPRIVATE(bp, void *) == NULL); |
415 | } |
416 | xfs_buf_relse(bp); |
417 | } |
418 | } |
419 | |
420 | /* |
421 | * this is called from uncommit in the forced-shutdown path. |
422 | * we need to check to see if the reference count on the log item |
423 | * is going to drop to zero. If so, unpin will free the log item |
424 | * so we need to free the item's descriptor (that points to the item) |
425 | * in the transaction. |
426 | */ |
427 | STATIC void |
428 | xfs_buf_item_unpin_remove( |
429 | xfs_buf_log_item_t *bip, |
430 | xfs_trans_t *tp) |
431 | { |
432 | xfs_buf_t *bp; |
433 | xfs_log_item_desc_t *lidp; |
434 | int stale = 0; |
435 | |
436 | bp = bip->bli_buf; |
437 | /* |
438 | * will xfs_buf_item_unpin() call xfs_buf_item_relse()? |
439 | */ |
440 | if ((atomic_read(&bip->bli_refcount) == 1) && |
441 | (bip->bli_flags & XFS_BLI_STALE)) { |
442 | ASSERT(XFS_BUF_VALUSEMA(bip->bli_buf) <= 0); |
443 | xfs_buf_item_trace("UNPIN REMOVE", bip); |
444 | xfs_buftrace("XFS_UNPIN_REMOVE", bp); |
445 | /* |
446 | * yes -- clear the xaction descriptor in-use flag |
447 | * and free the chunk if required. We can safely |
448 | * do some work here and then call buf_item_unpin |
449 | * to do the rest because if the if is true, then |
450 | * we are holding the buffer locked so no one else |
451 | * will be able to bump up the refcount. |
452 | */ |
453 | lidp = xfs_trans_find_item(tp, (xfs_log_item_t *) bip); |
454 | stale = lidp->lid_flags & XFS_LID_BUF_STALE; |
455 | xfs_trans_free_item(tp, lidp); |
456 | /* |
457 | * Since the transaction no longer refers to the buffer, |
458 | * the buffer should no longer refer to the transaction. |
459 | */ |
460 | XFS_BUF_SET_FSPRIVATE2(bp, NULL); |
461 | } |
462 | |
463 | xfs_buf_item_unpin(bip, stale); |
464 | |
465 | return; |
466 | } |
467 | |
468 | /* |
469 | * This is called to attempt to lock the buffer associated with this |
470 | * buf log item. Don't sleep on the buffer lock. If we can't get |
471 | * the lock right away, return 0. If we can get the lock, pull the |
472 | * buffer from the free list, mark it busy, and return 1. |
473 | */ |
474 | STATIC uint |
475 | xfs_buf_item_trylock( |
476 | xfs_buf_log_item_t *bip) |
477 | { |
478 | xfs_buf_t *bp; |
479 | |
480 | bp = bip->bli_buf; |
481 | |
482 | if (XFS_BUF_ISPINNED(bp)) { |
483 | return XFS_ITEM_PINNED; |
484 | } |
485 | |
486 | if (!XFS_BUF_CPSEMA(bp)) { |
487 | return XFS_ITEM_LOCKED; |
488 | } |
489 | |
490 | /* |
491 | * Remove the buffer from the free list. Only do this |
492 | * if it's on the free list. Private buffers like the |
493 | * superblock buffer are not. |
494 | */ |
495 | XFS_BUF_HOLD(bp); |
496 | |
497 | ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); |
498 | xfs_buf_item_trace("TRYLOCK SUCCESS", bip); |
499 | return XFS_ITEM_SUCCESS; |
500 | } |
501 | |
502 | /* |
503 | * Release the buffer associated with the buf log item. |
504 | * If there is no dirty logged data associated with the |
505 | * buffer recorded in the buf log item, then free the |
506 | * buf log item and remove the reference to it in the |
507 | * buffer. |
508 | * |
509 | * This call ignores the recursion count. It is only called |
510 | * when the buffer should REALLY be unlocked, regardless |
511 | * of the recursion count. |
512 | * |
513 | * If the XFS_BLI_HOLD flag is set in the buf log item, then |
514 | * free the log item if necessary but do not unlock the buffer. |
515 | * This is for support of xfs_trans_bhold(). Make sure the |
516 | * XFS_BLI_HOLD field is cleared if we don't free the item. |
517 | */ |
518 | STATIC void |
519 | xfs_buf_item_unlock( |
520 | xfs_buf_log_item_t *bip) |
521 | { |
522 | int aborted; |
523 | xfs_buf_t *bp; |
524 | uint hold; |
525 | |
526 | bp = bip->bli_buf; |
527 | xfs_buftrace("XFS_UNLOCK", bp); |
528 | |
529 | /* |
530 | * Clear the buffer's association with this transaction. |
531 | */ |
532 | XFS_BUF_SET_FSPRIVATE2(bp, NULL); |
533 | |
534 | /* |
535 | * If this is a transaction abort, don't return early. |
536 | * Instead, allow the brelse to happen. |
537 | * Normally it would be done for stale (cancelled) buffers |
538 | * at unpin time, but we'll never go through the pin/unpin |
539 | * cycle if we abort inside commit. |
540 | */ |
541 | aborted = (bip->bli_item.li_flags & XFS_LI_ABORTED) != 0; |
542 | |
543 | /* |
544 | * If the buf item is marked stale, then don't do anything. |
545 | * We'll unlock the buffer and free the buf item when the |
546 | * buffer is unpinned for the last time. |
547 | */ |
548 | if (bip->bli_flags & XFS_BLI_STALE) { |
549 | bip->bli_flags &= ~XFS_BLI_LOGGED; |
550 | xfs_buf_item_trace("UNLOCK STALE", bip); |
551 | ASSERT(bip->bli_format.blf_flags & XFS_BLI_CANCEL); |
552 | if (!aborted) |
553 | return; |
554 | } |
555 | |
556 | /* |
557 | * Drop the transaction's reference to the log item if |
558 | * it was not logged as part of the transaction. Otherwise |
559 | * we'll drop the reference in xfs_buf_item_unpin() when |
560 | * the transaction is really through with the buffer. |
561 | */ |
562 | if (!(bip->bli_flags & XFS_BLI_LOGGED)) { |
563 | atomic_dec(&bip->bli_refcount); |
564 | } else { |
565 | /* |
566 | * Clear the logged flag since this is per |
567 | * transaction state. |
568 | */ |
569 | bip->bli_flags &= ~XFS_BLI_LOGGED; |
570 | } |
571 | |
572 | /* |
573 | * Before possibly freeing the buf item, determine if we should |
574 | * release the buffer at the end of this routine. |
575 | */ |
576 | hold = bip->bli_flags & XFS_BLI_HOLD; |
577 | xfs_buf_item_trace("UNLOCK", bip); |
578 | |
579 | /* |
580 | * If the buf item isn't tracking any data, free it. |
581 | * Otherwise, if XFS_BLI_HOLD is set clear it. |
582 | */ |
583 | if (xfs_bitmap_empty(bip->bli_format.blf_data_map, |
584 | bip->bli_format.blf_map_size)) { |
585 | xfs_buf_item_relse(bp); |
586 | } else if (hold) { |
587 | bip->bli_flags &= ~XFS_BLI_HOLD; |
588 | } |
589 | |
590 | /* |
591 | * Release the buffer if XFS_BLI_HOLD was not set. |
592 | */ |
593 | if (!hold) { |
594 | xfs_buf_relse(bp); |
595 | } |
596 | } |
597 | |
598 | /* |
599 | * This is called to find out where the oldest active copy of the |
600 | * buf log item in the on disk log resides now that the last log |
601 | * write of it completed at the given lsn. |
602 | * We always re-log all the dirty data in a buffer, so usually the |
603 | * latest copy in the on disk log is the only one that matters. For |
604 | * those cases we simply return the given lsn. |
605 | * |
606 | * The one exception to this is for buffers full of newly allocated |
607 | * inodes. These buffers are only relogged with the XFS_BLI_INODE_BUF |
608 | * flag set, indicating that only the di_next_unlinked fields from the |
609 | * inodes in the buffers will be replayed during recovery. If the |
610 | * original newly allocated inode images have not yet been flushed |
611 | * when the buffer is so relogged, then we need to make sure that we |
612 | * keep the old images in the 'active' portion of the log. We do this |
613 | * by returning the original lsn of that transaction here rather than |
614 | * the current one. |
615 | */ |
616 | STATIC xfs_lsn_t |
617 | xfs_buf_item_committed( |
618 | xfs_buf_log_item_t *bip, |
619 | xfs_lsn_t lsn) |
620 | { |
621 | xfs_buf_item_trace("COMMITTED", bip); |
622 | if ((bip->bli_flags & XFS_BLI_INODE_ALLOC_BUF) && |
623 | (bip->bli_item.li_lsn != 0)) { |
624 | return bip->bli_item.li_lsn; |
625 | } |
626 | return (lsn); |
627 | } |
628 | |
629 | /* |
630 | * This is called to asynchronously write the buffer associated with this |
631 | * buf log item out to disk. The buffer will already have been locked by |
632 | * a successful call to xfs_buf_item_trylock(). If the buffer still has |
633 | * B_DELWRI set, then get it going out to disk with a call to bawrite(). |
634 | * If not, then just release the buffer. |
635 | */ |
636 | STATIC void |
637 | xfs_buf_item_push( |
638 | xfs_buf_log_item_t *bip) |
639 | { |
640 | xfs_buf_t *bp; |
641 | |
642 | ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); |
643 | xfs_buf_item_trace("PUSH", bip); |
644 | |
645 | bp = bip->bli_buf; |
646 | |
647 | if (XFS_BUF_ISDELAYWRITE(bp)) { |
648 | int error; |
649 | error = xfs_bawrite(bip->bli_item.li_mountp, bp); |
650 | if (error) |
651 | xfs_fs_cmn_err(CE_WARN, bip->bli_item.li_mountp, |
652 | "xfs_buf_item_push: pushbuf error %d on bip %p, bp %p", |
653 | error, bip, bp); |
654 | } else { |
655 | xfs_buf_relse(bp); |
656 | } |
657 | } |
658 | |
659 | /* ARGSUSED */ |
660 | STATIC void |
661 | xfs_buf_item_committing(xfs_buf_log_item_t *bip, xfs_lsn_t commit_lsn) |
662 | { |
663 | } |
664 | |
665 | /* |
666 | * This is the ops vector shared by all buf log items. |
667 | */ |
668 | static struct xfs_item_ops xfs_buf_item_ops = { |
669 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_buf_item_size, |
670 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) |
671 | xfs_buf_item_format, |
672 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_buf_item_pin, |
673 | .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_buf_item_unpin, |
674 | .iop_unpin_remove = (void(*)(xfs_log_item_t*, xfs_trans_t *)) |
675 | xfs_buf_item_unpin_remove, |
676 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_buf_item_trylock, |
677 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_buf_item_unlock, |
678 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) |
679 | xfs_buf_item_committed, |
680 | .iop_push = (void(*)(xfs_log_item_t*))xfs_buf_item_push, |
681 | .iop_pushbuf = NULL, |
682 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) |
683 | xfs_buf_item_committing |
684 | }; |
685 | |
686 | |
687 | /* |
688 | * Allocate a new buf log item to go with the given buffer. |
689 | * Set the buffer's b_fsprivate field to point to the new |
690 | * buf log item. If there are other item's attached to the |
691 | * buffer (see xfs_buf_attach_iodone() below), then put the |
692 | * buf log item at the front. |
693 | */ |
694 | void |
695 | xfs_buf_item_init( |
696 | xfs_buf_t *bp, |
697 | xfs_mount_t *mp) |
698 | { |
699 | xfs_log_item_t *lip; |
700 | xfs_buf_log_item_t *bip; |
701 | int chunks; |
702 | int map_size; |
703 | |
704 | /* |
705 | * Check to see if there is already a buf log item for |
706 | * this buffer. If there is, it is guaranteed to be |
707 | * the first. If we do already have one, there is |
708 | * nothing to do here so return. |
709 | */ |
710 | if (bp->b_mount != mp) |
711 | bp->b_mount = mp; |
712 | XFS_BUF_SET_BDSTRAT_FUNC(bp, xfs_bdstrat_cb); |
713 | if (XFS_BUF_FSPRIVATE(bp, void *) != NULL) { |
714 | lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *); |
715 | if (lip->li_type == XFS_LI_BUF) { |
716 | return; |
717 | } |
718 | } |
719 | |
720 | /* |
721 | * chunks is the number of XFS_BLI_CHUNK size pieces |
722 | * the buffer can be divided into. Make sure not to |
723 | * truncate any pieces. map_size is the size of the |
724 | * bitmap needed to describe the chunks of the buffer. |
725 | */ |
726 | chunks = (int)((XFS_BUF_COUNT(bp) + (XFS_BLI_CHUNK - 1)) >> XFS_BLI_SHIFT); |
727 | map_size = (int)((chunks + NBWORD) >> BIT_TO_WORD_SHIFT); |
728 | |
729 | bip = (xfs_buf_log_item_t*)kmem_zone_zalloc(xfs_buf_item_zone, |
730 | KM_SLEEP); |
731 | bip->bli_item.li_type = XFS_LI_BUF; |
732 | bip->bli_item.li_ops = &xfs_buf_item_ops; |
733 | bip->bli_item.li_mountp = mp; |
734 | bip->bli_item.li_ailp = mp->m_ail; |
735 | bip->bli_buf = bp; |
736 | xfs_buf_hold(bp); |
737 | bip->bli_format.blf_type = XFS_LI_BUF; |
738 | bip->bli_format.blf_blkno = (__int64_t)XFS_BUF_ADDR(bp); |
739 | bip->bli_format.blf_len = (ushort)BTOBB(XFS_BUF_COUNT(bp)); |
740 | bip->bli_format.blf_map_size = map_size; |
741 | #ifdef XFS_BLI_TRACE |
742 | bip->bli_trace = ktrace_alloc(XFS_BLI_TRACE_SIZE, KM_NOFS); |
743 | #endif |
744 | |
745 | #ifdef XFS_TRANS_DEBUG |
746 | /* |
747 | * Allocate the arrays for tracking what needs to be logged |
748 | * and what our callers request to be logged. bli_orig |
749 | * holds a copy of the original, clean buffer for comparison |
750 | * against, and bli_logged keeps a 1 bit flag per byte in |
751 | * the buffer to indicate which bytes the callers have asked |
752 | * to have logged. |
753 | */ |
754 | bip->bli_orig = (char *)kmem_alloc(XFS_BUF_COUNT(bp), KM_SLEEP); |
755 | memcpy(bip->bli_orig, XFS_BUF_PTR(bp), XFS_BUF_COUNT(bp)); |
756 | bip->bli_logged = (char *)kmem_zalloc(XFS_BUF_COUNT(bp) / NBBY, KM_SLEEP); |
757 | #endif |
758 | |
759 | /* |
760 | * Put the buf item into the list of items attached to the |
761 | * buffer at the front. |
762 | */ |
763 | if (XFS_BUF_FSPRIVATE(bp, void *) != NULL) { |
764 | bip->bli_item.li_bio_list = |
765 | XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *); |
766 | } |
767 | XFS_BUF_SET_FSPRIVATE(bp, bip); |
768 | } |
769 | |
770 | |
771 | /* |
772 | * Mark bytes first through last inclusive as dirty in the buf |
773 | * item's bitmap. |
774 | */ |
775 | void |
776 | xfs_buf_item_log( |
777 | xfs_buf_log_item_t *bip, |
778 | uint first, |
779 | uint last) |
780 | { |
781 | uint first_bit; |
782 | uint last_bit; |
783 | uint bits_to_set; |
784 | uint bits_set; |
785 | uint word_num; |
786 | uint *wordp; |
787 | uint bit; |
788 | uint end_bit; |
789 | uint mask; |
790 | |
791 | /* |
792 | * Mark the item as having some dirty data for |
793 | * quick reference in xfs_buf_item_dirty. |
794 | */ |
795 | bip->bli_flags |= XFS_BLI_DIRTY; |
796 | |
797 | /* |
798 | * Convert byte offsets to bit numbers. |
799 | */ |
800 | first_bit = first >> XFS_BLI_SHIFT; |
801 | last_bit = last >> XFS_BLI_SHIFT; |
802 | |
803 | /* |
804 | * Calculate the total number of bits to be set. |
805 | */ |
806 | bits_to_set = last_bit - first_bit + 1; |
807 | |
808 | /* |
809 | * Get a pointer to the first word in the bitmap |
810 | * to set a bit in. |
811 | */ |
812 | word_num = first_bit >> BIT_TO_WORD_SHIFT; |
813 | wordp = &(bip->bli_format.blf_data_map[word_num]); |
814 | |
815 | /* |
816 | * Calculate the starting bit in the first word. |
817 | */ |
818 | bit = first_bit & (uint)(NBWORD - 1); |
819 | |
820 | /* |
821 | * First set any bits in the first word of our range. |
822 | * If it starts at bit 0 of the word, it will be |
823 | * set below rather than here. That is what the variable |
824 | * bit tells us. The variable bits_set tracks the number |
825 | * of bits that have been set so far. End_bit is the number |
826 | * of the last bit to be set in this word plus one. |
827 | */ |
828 | if (bit) { |
829 | end_bit = MIN(bit + bits_to_set, (uint)NBWORD); |
830 | mask = ((1 << (end_bit - bit)) - 1) << bit; |
831 | *wordp |= mask; |
832 | wordp++; |
833 | bits_set = end_bit - bit; |
834 | } else { |
835 | bits_set = 0; |
836 | } |
837 | |
838 | /* |
839 | * Now set bits a whole word at a time that are between |
840 | * first_bit and last_bit. |
841 | */ |
842 | while ((bits_to_set - bits_set) >= NBWORD) { |
843 | *wordp |= 0xffffffff; |
844 | bits_set += NBWORD; |
845 | wordp++; |
846 | } |
847 | |
848 | /* |
849 | * Finally, set any bits left to be set in one last partial word. |
850 | */ |
851 | end_bit = bits_to_set - bits_set; |
852 | if (end_bit) { |
853 | mask = (1 << end_bit) - 1; |
854 | *wordp |= mask; |
855 | } |
856 | |
857 | xfs_buf_item_log_debug(bip, first, last); |
858 | } |
859 | |
860 | |
861 | /* |
862 | * Return 1 if the buffer has some data that has been logged (at any |
863 | * point, not just the current transaction) and 0 if not. |
864 | */ |
865 | uint |
866 | xfs_buf_item_dirty( |
867 | xfs_buf_log_item_t *bip) |
868 | { |
869 | return (bip->bli_flags & XFS_BLI_DIRTY); |
870 | } |
871 | |
872 | STATIC void |
873 | xfs_buf_item_free( |
874 | xfs_buf_log_item_t *bip) |
875 | { |
876 | #ifdef XFS_TRANS_DEBUG |
877 | kmem_free(bip->bli_orig); |
878 | kmem_free(bip->bli_logged); |
879 | #endif /* XFS_TRANS_DEBUG */ |
880 | |
881 | #ifdef XFS_BLI_TRACE |
882 | ktrace_free(bip->bli_trace); |
883 | #endif |
884 | kmem_zone_free(xfs_buf_item_zone, bip); |
885 | } |
886 | |
887 | /* |
888 | * This is called when the buf log item is no longer needed. It should |
889 | * free the buf log item associated with the given buffer and clear |
890 | * the buffer's pointer to the buf log item. If there are no more |
891 | * items in the list, clear the b_iodone field of the buffer (see |
892 | * xfs_buf_attach_iodone() below). |
893 | */ |
894 | void |
895 | xfs_buf_item_relse( |
896 | xfs_buf_t *bp) |
897 | { |
898 | xfs_buf_log_item_t *bip; |
899 | |
900 | xfs_buftrace("XFS_RELSE", bp); |
901 | bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*); |
902 | XFS_BUF_SET_FSPRIVATE(bp, bip->bli_item.li_bio_list); |
903 | if ((XFS_BUF_FSPRIVATE(bp, void *) == NULL) && |
904 | (XFS_BUF_IODONE_FUNC(bp) != NULL)) { |
905 | XFS_BUF_CLR_IODONE_FUNC(bp); |
906 | } |
907 | xfs_buf_rele(bp); |
908 | xfs_buf_item_free(bip); |
909 | } |
910 | |
911 | |
912 | /* |
913 | * Add the given log item with its callback to the list of callbacks |
914 | * to be called when the buffer's I/O completes. If it is not set |
915 | * already, set the buffer's b_iodone() routine to be |
916 | * xfs_buf_iodone_callbacks() and link the log item into the list of |
917 | * items rooted at b_fsprivate. Items are always added as the second |
918 | * entry in the list if there is a first, because the buf item code |
919 | * assumes that the buf log item is first. |
920 | */ |
921 | void |
922 | xfs_buf_attach_iodone( |
923 | xfs_buf_t *bp, |
924 | void (*cb)(xfs_buf_t *, xfs_log_item_t *), |
925 | xfs_log_item_t *lip) |
926 | { |
927 | xfs_log_item_t *head_lip; |
928 | |
929 | ASSERT(XFS_BUF_ISBUSY(bp)); |
930 | ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); |
931 | |
932 | lip->li_cb = cb; |
933 | if (XFS_BUF_FSPRIVATE(bp, void *) != NULL) { |
934 | head_lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *); |
935 | lip->li_bio_list = head_lip->li_bio_list; |
936 | head_lip->li_bio_list = lip; |
937 | } else { |
938 | XFS_BUF_SET_FSPRIVATE(bp, lip); |
939 | } |
940 | |
941 | ASSERT((XFS_BUF_IODONE_FUNC(bp) == xfs_buf_iodone_callbacks) || |
942 | (XFS_BUF_IODONE_FUNC(bp) == NULL)); |
943 | XFS_BUF_SET_IODONE_FUNC(bp, xfs_buf_iodone_callbacks); |
944 | } |
945 | |
946 | STATIC void |
947 | xfs_buf_do_callbacks( |
948 | xfs_buf_t *bp, |
949 | xfs_log_item_t *lip) |
950 | { |
951 | xfs_log_item_t *nlip; |
952 | |
953 | while (lip != NULL) { |
954 | nlip = lip->li_bio_list; |
955 | ASSERT(lip->li_cb != NULL); |
956 | /* |
957 | * Clear the next pointer so we don't have any |
958 | * confusion if the item is added to another buf. |
959 | * Don't touch the log item after calling its |
960 | * callback, because it could have freed itself. |
961 | */ |
962 | lip->li_bio_list = NULL; |
963 | lip->li_cb(bp, lip); |
964 | lip = nlip; |
965 | } |
966 | } |
967 | |
968 | /* |
969 | * This is the iodone() function for buffers which have had callbacks |
970 | * attached to them by xfs_buf_attach_iodone(). It should remove each |
971 | * log item from the buffer's list and call the callback of each in turn. |
972 | * When done, the buffer's fsprivate field is set to NULL and the buffer |
973 | * is unlocked with a call to iodone(). |
974 | */ |
975 | void |
976 | xfs_buf_iodone_callbacks( |
977 | xfs_buf_t *bp) |
978 | { |
979 | xfs_log_item_t *lip; |
980 | static ulong lasttime; |
981 | static xfs_buftarg_t *lasttarg; |
982 | xfs_mount_t *mp; |
983 | |
984 | ASSERT(XFS_BUF_FSPRIVATE(bp, void *) != NULL); |
985 | lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *); |
986 | |
987 | if (XFS_BUF_GETERROR(bp) != 0) { |
988 | /* |
989 | * If we've already decided to shutdown the filesystem |
990 | * because of IO errors, there's no point in giving this |
991 | * a retry. |
992 | */ |
993 | mp = lip->li_mountp; |
994 | if (XFS_FORCED_SHUTDOWN(mp)) { |
995 | ASSERT(XFS_BUF_TARGET(bp) == mp->m_ddev_targp); |
996 | XFS_BUF_SUPER_STALE(bp); |
997 | xfs_buftrace("BUF_IODONE_CB", bp); |
998 | xfs_buf_do_callbacks(bp, lip); |
999 | XFS_BUF_SET_FSPRIVATE(bp, NULL); |
1000 | XFS_BUF_CLR_IODONE_FUNC(bp); |
1001 | xfs_biodone(bp); |
1002 | return; |
1003 | } |
1004 | |
1005 | if ((XFS_BUF_TARGET(bp) != lasttarg) || |
1006 | (time_after(jiffies, (lasttime + 5*HZ)))) { |
1007 | lasttime = jiffies; |
1008 | cmn_err(CE_ALERT, "Device %s, XFS metadata write error" |
1009 | " block 0x%llx in %s", |
1010 | XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)), |
1011 | (__uint64_t)XFS_BUF_ADDR(bp), mp->m_fsname); |
1012 | } |
1013 | lasttarg = XFS_BUF_TARGET(bp); |
1014 | |
1015 | if (XFS_BUF_ISASYNC(bp)) { |
1016 | /* |
1017 | * If the write was asynchronous then noone will be |
1018 | * looking for the error. Clear the error state |
1019 | * and write the buffer out again delayed write. |
1020 | * |
1021 | * XXXsup This is OK, so long as we catch these |
1022 | * before we start the umount; we don't want these |
1023 | * DELWRI metadata bufs to be hanging around. |
1024 | */ |
1025 | XFS_BUF_ERROR(bp,0); /* errno of 0 unsets the flag */ |
1026 | |
1027 | if (!(XFS_BUF_ISSTALE(bp))) { |
1028 | XFS_BUF_DELAYWRITE(bp); |
1029 | XFS_BUF_DONE(bp); |
1030 | XFS_BUF_SET_START(bp); |
1031 | } |
1032 | ASSERT(XFS_BUF_IODONE_FUNC(bp)); |
1033 | xfs_buftrace("BUF_IODONE ASYNC", bp); |
1034 | xfs_buf_relse(bp); |
1035 | } else { |
1036 | /* |
1037 | * If the write of the buffer was not asynchronous, |
1038 | * then we want to make sure to return the error |
1039 | * to the caller of bwrite(). Because of this we |
1040 | * cannot clear the B_ERROR state at this point. |
1041 | * Instead we install a callback function that |
1042 | * will be called when the buffer is released, and |
1043 | * that routine will clear the error state and |
1044 | * set the buffer to be written out again after |
1045 | * some delay. |
1046 | */ |
1047 | /* We actually overwrite the existing b-relse |
1048 | function at times, but we're gonna be shutting down |
1049 | anyway. */ |
1050 | XFS_BUF_SET_BRELSE_FUNC(bp,xfs_buf_error_relse); |
1051 | XFS_BUF_DONE(bp); |
1052 | XFS_BUF_FINISH_IOWAIT(bp); |
1053 | } |
1054 | return; |
1055 | } |
1056 | #ifdef XFSERRORDEBUG |
1057 | xfs_buftrace("XFS BUFCB NOERR", bp); |
1058 | #endif |
1059 | xfs_buf_do_callbacks(bp, lip); |
1060 | XFS_BUF_SET_FSPRIVATE(bp, NULL); |
1061 | XFS_BUF_CLR_IODONE_FUNC(bp); |
1062 | xfs_biodone(bp); |
1063 | } |
1064 | |
1065 | /* |
1066 | * This is a callback routine attached to a buffer which gets an error |
1067 | * when being written out synchronously. |
1068 | */ |
1069 | STATIC void |
1070 | xfs_buf_error_relse( |
1071 | xfs_buf_t *bp) |
1072 | { |
1073 | xfs_log_item_t *lip; |
1074 | xfs_mount_t *mp; |
1075 | |
1076 | lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *); |
1077 | mp = (xfs_mount_t *)lip->li_mountp; |
1078 | ASSERT(XFS_BUF_TARGET(bp) == mp->m_ddev_targp); |
1079 | |
1080 | XFS_BUF_STALE(bp); |
1081 | XFS_BUF_DONE(bp); |
1082 | XFS_BUF_UNDELAYWRITE(bp); |
1083 | XFS_BUF_ERROR(bp,0); |
1084 | xfs_buftrace("BUF_ERROR_RELSE", bp); |
1085 | if (! XFS_FORCED_SHUTDOWN(mp)) |
1086 | xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR); |
1087 | /* |
1088 | * We have to unpin the pinned buffers so do the |
1089 | * callbacks. |
1090 | */ |
1091 | xfs_buf_do_callbacks(bp, lip); |
1092 | XFS_BUF_SET_FSPRIVATE(bp, NULL); |
1093 | XFS_BUF_CLR_IODONE_FUNC(bp); |
1094 | XFS_BUF_SET_BRELSE_FUNC(bp,NULL); |
1095 | xfs_buf_relse(bp); |
1096 | } |
1097 | |
1098 | |
1099 | /* |
1100 | * This is the iodone() function for buffers which have been |
1101 | * logged. It is called when they are eventually flushed out. |
1102 | * It should remove the buf item from the AIL, and free the buf item. |
1103 | * It is called by xfs_buf_iodone_callbacks() above which will take |
1104 | * care of cleaning up the buffer itself. |
1105 | */ |
1106 | /* ARGSUSED */ |
1107 | void |
1108 | xfs_buf_iodone( |
1109 | xfs_buf_t *bp, |
1110 | xfs_buf_log_item_t *bip) |
1111 | { |
1112 | struct xfs_ail *ailp = bip->bli_item.li_ailp; |
1113 | |
1114 | ASSERT(bip->bli_buf == bp); |
1115 | |
1116 | xfs_buf_rele(bp); |
1117 | |
1118 | /* |
1119 | * If we are forcibly shutting down, this may well be |
1120 | * off the AIL already. That's because we simulate the |
1121 | * log-committed callbacks to unpin these buffers. Or we may never |
1122 | * have put this item on AIL because of the transaction was |
1123 | * aborted forcibly. xfs_trans_ail_delete() takes care of these. |
1124 | * |
1125 | * Either way, AIL is useless if we're forcing a shutdown. |
1126 | */ |
1127 | spin_lock(&ailp->xa_lock); |
1128 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)bip); |
1129 | xfs_buf_item_free(bip); |
1130 | } |
1131 | |
1132 | #if defined(XFS_BLI_TRACE) |
1133 | void |
1134 | xfs_buf_item_trace( |
1135 | char *id, |
1136 | xfs_buf_log_item_t *bip) |
1137 | { |
1138 | xfs_buf_t *bp; |
1139 | ASSERT(bip->bli_trace != NULL); |
1140 | |
1141 | bp = bip->bli_buf; |
1142 | ktrace_enter(bip->bli_trace, |
1143 | (void *)id, |
1144 | (void *)bip->bli_buf, |
1145 | (void *)((unsigned long)bip->bli_flags), |
1146 | (void *)((unsigned long)bip->bli_recur), |
1147 | (void *)((unsigned long)atomic_read(&bip->bli_refcount)), |
1148 | (void *)((unsigned long) |
1149 | (0xFFFFFFFF & XFS_BUF_ADDR(bp) >> 32)), |
1150 | (void *)((unsigned long)(0xFFFFFFFF & XFS_BUF_ADDR(bp))), |
1151 | (void *)((unsigned long)XFS_BUF_COUNT(bp)), |
1152 | (void *)((unsigned long)XFS_BUF_BFLAGS(bp)), |
1153 | XFS_BUF_FSPRIVATE(bp, void *), |
1154 | XFS_BUF_FSPRIVATE2(bp, void *), |
1155 | (void *)(unsigned long)XFS_BUF_ISPINNED(bp), |
1156 | (void *)XFS_BUF_IODONE_FUNC(bp), |
1157 | (void *)((unsigned long)(XFS_BUF_VALUSEMA(bp))), |
1158 | (void *)bip->bli_item.li_desc, |
1159 | (void *)((unsigned long)bip->bli_item.li_flags)); |
1160 | } |
1161 | #endif /* XFS_BLI_TRACE */ |
1162 |
Branches:
ben-wpan
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javiroman/ks7010
jz-2.6.34
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9