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7fd36c44 DC |
1 | /* |
2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. | |
3 | * Copyright (C) 2010 Red Hat, Inc. | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it would be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write the Free Software Foundation, | |
17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | #include "xfs.h" | |
20 | #include "xfs_fs.h" | |
21 | #include "xfs_format.h" | |
70a9883c | 22 | #include "xfs_shared.h" |
7fd36c44 DC |
23 | #include "xfs_log.h" |
24 | #include "xfs_trans_resv.h" | |
25 | #include "xfs_trans.h" | |
26 | #include "xfs_sb.h" | |
27 | #include "xfs_ag.h" | |
28 | #include "xfs_mount.h" | |
29 | #include "xfs_error.h" | |
30 | #include "xfs_da_btree.h" | |
31 | #include "xfs_bmap_btree.h" | |
32 | #include "xfs_alloc_btree.h" | |
33 | #include "xfs_ialloc_btree.h" | |
34 | #include "xfs_dinode.h" | |
35 | #include "xfs_inode.h" | |
36 | #include "xfs_btree.h" | |
37 | #include "xfs_ialloc.h" | |
38 | #include "xfs_alloc.h" | |
39 | #include "xfs_extent_busy.h" | |
40 | #include "xfs_bmap.h" | |
68988114 | 41 | #include "xfs_bmap_util.h" |
7fd36c44 DC |
42 | #include "xfs_quota.h" |
43 | #include "xfs_qm.h" | |
44 | #include "xfs_trans_space.h" | |
45 | #include "xfs_trace.h" | |
46 | ||
47 | /* | |
48 | * A buffer has a format structure overhead in the log in addition | |
49 | * to the data, so we need to take this into account when reserving | |
50 | * space in a transaction for a buffer. Round the space required up | |
51 | * to a multiple of 128 bytes so that we don't change the historical | |
52 | * reservation that has been used for this overhead. | |
53 | */ | |
54 | STATIC uint | |
55 | xfs_buf_log_overhead(void) | |
56 | { | |
57 | return round_up(sizeof(struct xlog_op_header) + | |
58 | sizeof(struct xfs_buf_log_format), 128); | |
59 | } | |
60 | ||
61 | /* | |
62 | * Calculate out transaction log reservation per item in bytes. | |
63 | * | |
64 | * The nbufs argument is used to indicate the number of items that | |
65 | * will be changed in a transaction. size is used to tell how many | |
66 | * bytes should be reserved per item. | |
67 | */ | |
68 | STATIC uint | |
69 | xfs_calc_buf_res( | |
70 | uint nbufs, | |
71 | uint size) | |
72 | { | |
73 | return nbufs * (size + xfs_buf_log_overhead()); | |
74 | } | |
75 | ||
23956703 DC |
76 | /* |
77 | * Logging inodes is really tricksy. They are logged in memory format, | |
78 | * which means that what we write into the log doesn't directly translate into | |
79 | * the amount of space they use on disk. | |
80 | * | |
81 | * Case in point - btree format forks in memory format use more space than the | |
82 | * on-disk format. In memory, the buffer contains a normal btree block header so | |
83 | * the btree code can treat it as though it is just another generic buffer. | |
84 | * However, when we write it to the inode fork, we don't write all of this | |
85 | * header as it isn't needed. e.g. the root is only ever in the inode, so | |
86 | * there's no need for sibling pointers which would waste 16 bytes of space. | |
87 | * | |
88 | * Hence when we have an inode with a maximally sized btree format fork, then | |
89 | * amount of information we actually log is greater than the size of the inode | |
90 | * on disk. Hence we need an inode reservation function that calculates all this | |
91 | * correctly. So, we log: | |
92 | * | |
93 | * - log op headers for object | |
94 | * - inode log format object | |
95 | * - the entire inode contents (core + 2 forks) | |
96 | * - two bmap btree block headers | |
97 | */ | |
98 | STATIC uint | |
99 | xfs_calc_inode_res( | |
100 | struct xfs_mount *mp, | |
101 | uint ninodes) | |
102 | { | |
103 | return ninodes * (sizeof(struct xlog_op_header) + | |
104 | sizeof(struct xfs_inode_log_format) + | |
105 | mp->m_sb.sb_inodesize + | |
106 | 2 * XFS_BMBT_BLOCK_LEN(mp)); | |
107 | } | |
108 | ||
7fd36c44 DC |
109 | /* |
110 | * Various log reservation values. | |
111 | * | |
112 | * These are based on the size of the file system block because that is what | |
113 | * most transactions manipulate. Each adds in an additional 128 bytes per | |
114 | * item logged to try to account for the overhead of the transaction mechanism. | |
115 | * | |
116 | * Note: Most of the reservations underestimate the number of allocation | |
117 | * groups into which they could free extents in the xfs_bmap_finish() call. | |
118 | * This is because the number in the worst case is quite high and quite | |
119 | * unusual. In order to fix this we need to change xfs_bmap_finish() to free | |
120 | * extents in only a single AG at a time. This will require changes to the | |
121 | * EFI code as well, however, so that the EFI for the extents not freed is | |
122 | * logged again in each transaction. See SGI PV #261917. | |
123 | * | |
124 | * Reservation functions here avoid a huge stack in xfs_trans_init due to | |
125 | * register overflow from temporaries in the calculations. | |
126 | */ | |
127 | ||
128 | ||
129 | /* | |
130 | * In a write transaction we can allocate a maximum of 2 | |
131 | * extents. This gives: | |
132 | * the inode getting the new extents: inode size | |
133 | * the inode's bmap btree: max depth * block size | |
134 | * the agfs of the ags from which the extents are allocated: 2 * sector | |
135 | * the superblock free block counter: sector size | |
136 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
137 | * And the bmap_finish transaction can free bmap blocks in a join: | |
138 | * the agfs of the ags containing the blocks: 2 * sector size | |
139 | * the agfls of the ags containing the blocks: 2 * sector size | |
140 | * the super block free block counter: sector size | |
141 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
142 | */ | |
143 | STATIC uint | |
144 | xfs_calc_write_reservation( | |
145 | struct xfs_mount *mp) | |
146 | { | |
147 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 148 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
149 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), |
150 | XFS_FSB_TO_B(mp, 1)) + | |
151 | xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
152 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
153 | XFS_FSB_TO_B(mp, 1))), | |
154 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
155 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
156 | XFS_FSB_TO_B(mp, 1)))); | |
157 | } | |
158 | ||
159 | /* | |
160 | * In truncating a file we free up to two extents at once. We can modify: | |
161 | * the inode being truncated: inode size | |
162 | * the inode's bmap btree: (max depth + 1) * block size | |
163 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
164 | * the agf for each of the ags: 4 * sector size | |
165 | * the agfl for each of the ags: 4 * sector size | |
166 | * the super block to reflect the freed blocks: sector size | |
167 | * worst case split in allocation btrees per extent assuming 4 extents: | |
168 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
169 | * the inode btree: max depth * blocksize | |
170 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
171 | */ | |
172 | STATIC uint | |
173 | xfs_calc_itruncate_reservation( | |
174 | struct xfs_mount *mp) | |
175 | { | |
176 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 177 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
178 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, |
179 | XFS_FSB_TO_B(mp, 1))), | |
180 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
181 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
182 | XFS_FSB_TO_B(mp, 1)) + | |
183 | xfs_calc_buf_res(5, 0) + | |
184 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
185 | XFS_FSB_TO_B(mp, 1)) + | |
186 | xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + | |
187 | mp->m_in_maxlevels, 0))); | |
188 | } | |
189 | ||
190 | /* | |
191 | * In renaming a files we can modify: | |
192 | * the four inodes involved: 4 * inode size | |
193 | * the two directory btrees: 2 * (max depth + v2) * dir block size | |
194 | * the two directory bmap btrees: 2 * max depth * block size | |
195 | * And the bmap_finish transaction can free dir and bmap blocks (two sets | |
196 | * of bmap blocks) giving: | |
197 | * the agf for the ags in which the blocks live: 3 * sector size | |
198 | * the agfl for the ags in which the blocks live: 3 * sector size | |
199 | * the superblock for the free block count: sector size | |
200 | * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size | |
201 | */ | |
202 | STATIC uint | |
203 | xfs_calc_rename_reservation( | |
204 | struct xfs_mount *mp) | |
205 | { | |
206 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 207 | MAX((xfs_calc_inode_res(mp, 4) + |
7fd36c44 DC |
208 | xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), |
209 | XFS_FSB_TO_B(mp, 1))), | |
210 | (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + | |
211 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3), | |
212 | XFS_FSB_TO_B(mp, 1)))); | |
213 | } | |
214 | ||
215 | /* | |
216 | * For creating a link to an inode: | |
217 | * the parent directory inode: inode size | |
218 | * the linked inode: inode size | |
219 | * the directory btree could split: (max depth + v2) * dir block size | |
220 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
221 | * And the bmap_finish transaction can free some bmap blocks giving: | |
222 | * the agf for the ag in which the blocks live: sector size | |
223 | * the agfl for the ag in which the blocks live: sector size | |
224 | * the superblock for the free block count: sector size | |
225 | * the allocation btrees: 2 trees * (2 * max depth - 1) * block size | |
226 | */ | |
227 | STATIC uint | |
228 | xfs_calc_link_reservation( | |
229 | struct xfs_mount *mp) | |
230 | { | |
231 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 232 | MAX((xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
233 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
234 | XFS_FSB_TO_B(mp, 1))), | |
235 | (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
236 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
237 | XFS_FSB_TO_B(mp, 1)))); | |
238 | } | |
239 | ||
240 | /* | |
241 | * For removing a directory entry we can modify: | |
242 | * the parent directory inode: inode size | |
243 | * the removed inode: inode size | |
244 | * the directory btree could join: (max depth + v2) * dir block size | |
245 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
246 | * And the bmap_finish transaction can free the dir and bmap blocks giving: | |
247 | * the agf for the ag in which the blocks live: 2 * sector size | |
248 | * the agfl for the ag in which the blocks live: 2 * sector size | |
249 | * the superblock for the free block count: sector size | |
250 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
251 | */ | |
252 | STATIC uint | |
253 | xfs_calc_remove_reservation( | |
254 | struct xfs_mount *mp) | |
255 | { | |
256 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 257 | MAX((xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
258 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
259 | XFS_FSB_TO_B(mp, 1))), | |
260 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
261 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
262 | XFS_FSB_TO_B(mp, 1)))); | |
263 | } | |
264 | ||
265 | /* | |
266 | * For create, break it in to the two cases that the transaction | |
267 | * covers. We start with the modify case - allocation done by modification | |
268 | * of the state of existing inodes - and the allocation case. | |
269 | */ | |
270 | ||
271 | /* | |
272 | * For create we can modify: | |
273 | * the parent directory inode: inode size | |
274 | * the new inode: inode size | |
275 | * the inode btree entry: block size | |
276 | * the superblock for the nlink flag: sector size | |
277 | * the directory btree: (max depth + v2) * dir block size | |
278 | * the directory inode's bmap btree: (max depth + v2) * block size | |
279 | */ | |
280 | STATIC uint | |
281 | xfs_calc_create_resv_modify( | |
282 | struct xfs_mount *mp) | |
283 | { | |
23956703 | 284 | return xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
285 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
286 | (uint)XFS_FSB_TO_B(mp, 1) + | |
287 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1)); | |
288 | } | |
289 | ||
290 | /* | |
291 | * For create we can allocate some inodes giving: | |
292 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
293 | * the superblock for the nlink flag: sector size | |
294 | * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize | |
295 | * the inode btree: max depth * blocksize | |
296 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
297 | */ | |
298 | STATIC uint | |
299 | xfs_calc_create_resv_alloc( | |
300 | struct xfs_mount *mp) | |
301 | { | |
302 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
303 | mp->m_sb.sb_sectsize + | |
304 | xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), XFS_FSB_TO_B(mp, 1)) + | |
305 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + | |
306 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
307 | XFS_FSB_TO_B(mp, 1)); | |
308 | } | |
309 | ||
310 | STATIC uint | |
311 | __xfs_calc_create_reservation( | |
312 | struct xfs_mount *mp) | |
313 | { | |
314 | return XFS_DQUOT_LOGRES(mp) + | |
315 | MAX(xfs_calc_create_resv_alloc(mp), | |
316 | xfs_calc_create_resv_modify(mp)); | |
317 | } | |
318 | ||
319 | /* | |
320 | * For icreate we can allocate some inodes giving: | |
321 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
322 | * the superblock for the nlink flag: sector size | |
323 | * the inode btree: max depth * blocksize | |
324 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
325 | */ | |
326 | STATIC uint | |
327 | xfs_calc_icreate_resv_alloc( | |
328 | struct xfs_mount *mp) | |
329 | { | |
330 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
331 | mp->m_sb.sb_sectsize + | |
332 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + | |
333 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
334 | XFS_FSB_TO_B(mp, 1)); | |
335 | } | |
336 | ||
337 | STATIC uint | |
338 | xfs_calc_icreate_reservation(xfs_mount_t *mp) | |
339 | { | |
340 | return XFS_DQUOT_LOGRES(mp) + | |
341 | MAX(xfs_calc_icreate_resv_alloc(mp), | |
342 | xfs_calc_create_resv_modify(mp)); | |
343 | } | |
344 | ||
345 | STATIC uint | |
346 | xfs_calc_create_reservation( | |
347 | struct xfs_mount *mp) | |
348 | { | |
349 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
350 | return xfs_calc_icreate_reservation(mp); | |
351 | return __xfs_calc_create_reservation(mp); | |
352 | ||
353 | } | |
354 | ||
355 | /* | |
356 | * Making a new directory is the same as creating a new file. | |
357 | */ | |
358 | STATIC uint | |
359 | xfs_calc_mkdir_reservation( | |
360 | struct xfs_mount *mp) | |
361 | { | |
362 | return xfs_calc_create_reservation(mp); | |
363 | } | |
364 | ||
365 | ||
366 | /* | |
367 | * Making a new symplink is the same as creating a new file, but | |
368 | * with the added blocks for remote symlink data which can be up to 1kB in | |
369 | * length (MAXPATHLEN). | |
370 | */ | |
371 | STATIC uint | |
372 | xfs_calc_symlink_reservation( | |
373 | struct xfs_mount *mp) | |
374 | { | |
375 | return xfs_calc_create_reservation(mp) + | |
376 | xfs_calc_buf_res(1, MAXPATHLEN); | |
377 | } | |
378 | ||
379 | /* | |
380 | * In freeing an inode we can modify: | |
381 | * the inode being freed: inode size | |
382 | * the super block free inode counter: sector size | |
383 | * the agi hash list and counters: sector size | |
384 | * the inode btree entry: block size | |
385 | * the on disk inode before ours in the agi hash list: inode cluster size | |
386 | * the inode btree: max depth * blocksize | |
387 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
388 | */ | |
389 | STATIC uint | |
390 | xfs_calc_ifree_reservation( | |
391 | struct xfs_mount *mp) | |
392 | { | |
393 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 394 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
395 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + |
396 | xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + | |
397 | MAX((__uint16_t)XFS_FSB_TO_B(mp, 1), | |
398 | XFS_INODE_CLUSTER_SIZE(mp)) + | |
399 | xfs_calc_buf_res(1, 0) + | |
400 | xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + | |
401 | mp->m_in_maxlevels, 0) + | |
402 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
403 | XFS_FSB_TO_B(mp, 1)); | |
404 | } | |
405 | ||
406 | /* | |
407 | * When only changing the inode we log the inode and possibly the superblock | |
408 | * We also add a bit of slop for the transaction stuff. | |
409 | */ | |
410 | STATIC uint | |
411 | xfs_calc_ichange_reservation( | |
412 | struct xfs_mount *mp) | |
413 | { | |
414 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 DC |
415 | xfs_calc_inode_res(mp, 1) + |
416 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
7fd36c44 DC |
417 | |
418 | } | |
419 | ||
420 | /* | |
421 | * Growing the data section of the filesystem. | |
422 | * superblock | |
423 | * agi and agf | |
424 | * allocation btrees | |
425 | */ | |
426 | STATIC uint | |
427 | xfs_calc_growdata_reservation( | |
428 | struct xfs_mount *mp) | |
429 | { | |
430 | return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
431 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
432 | XFS_FSB_TO_B(mp, 1)); | |
433 | } | |
434 | ||
435 | /* | |
436 | * Growing the rt section of the filesystem. | |
437 | * In the first set of transactions (ALLOC) we allocate space to the | |
438 | * bitmap or summary files. | |
439 | * superblock: sector size | |
440 | * agf of the ag from which the extent is allocated: sector size | |
441 | * bmap btree for bitmap/summary inode: max depth * blocksize | |
442 | * bitmap/summary inode: inode size | |
443 | * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize | |
444 | */ | |
445 | STATIC uint | |
446 | xfs_calc_growrtalloc_reservation( | |
447 | struct xfs_mount *mp) | |
448 | { | |
449 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
450 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), | |
451 | XFS_FSB_TO_B(mp, 1)) + | |
23956703 | 452 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
453 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), |
454 | XFS_FSB_TO_B(mp, 1)); | |
455 | } | |
456 | ||
457 | /* | |
458 | * Growing the rt section of the filesystem. | |
459 | * In the second set of transactions (ZERO) we zero the new metadata blocks. | |
460 | * one bitmap/summary block: blocksize | |
461 | */ | |
462 | STATIC uint | |
463 | xfs_calc_growrtzero_reservation( | |
464 | struct xfs_mount *mp) | |
465 | { | |
466 | return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize); | |
467 | } | |
468 | ||
469 | /* | |
470 | * Growing the rt section of the filesystem. | |
471 | * In the third set of transactions (FREE) we update metadata without | |
472 | * allocating any new blocks. | |
473 | * superblock: sector size | |
474 | * bitmap inode: inode size | |
475 | * summary inode: inode size | |
476 | * one bitmap block: blocksize | |
477 | * summary blocks: new summary size | |
478 | */ | |
479 | STATIC uint | |
480 | xfs_calc_growrtfree_reservation( | |
481 | struct xfs_mount *mp) | |
482 | { | |
483 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
23956703 | 484 | xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
485 | xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) + |
486 | xfs_calc_buf_res(1, mp->m_rsumsize); | |
487 | } | |
488 | ||
489 | /* | |
490 | * Logging the inode modification timestamp on a synchronous write. | |
491 | * inode | |
492 | */ | |
493 | STATIC uint | |
494 | xfs_calc_swrite_reservation( | |
495 | struct xfs_mount *mp) | |
496 | { | |
23956703 | 497 | return xfs_calc_inode_res(mp, 1); |
7fd36c44 DC |
498 | } |
499 | ||
500 | /* | |
501 | * Logging the inode mode bits when writing a setuid/setgid file | |
502 | * inode | |
503 | */ | |
504 | STATIC uint | |
23956703 DC |
505 | xfs_calc_writeid_reservation( |
506 | struct xfs_mount *mp) | |
7fd36c44 | 507 | { |
23956703 | 508 | return xfs_calc_inode_res(mp, 1); |
7fd36c44 DC |
509 | } |
510 | ||
511 | /* | |
512 | * Converting the inode from non-attributed to attributed. | |
513 | * the inode being converted: inode size | |
514 | * agf block and superblock (for block allocation) | |
515 | * the new block (directory sized) | |
516 | * bmap blocks for the new directory block | |
517 | * allocation btrees | |
518 | */ | |
519 | STATIC uint | |
520 | xfs_calc_addafork_reservation( | |
521 | struct xfs_mount *mp) | |
522 | { | |
523 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 524 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
525 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + |
526 | xfs_calc_buf_res(1, mp->m_dirblksize) + | |
527 | xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, | |
528 | XFS_FSB_TO_B(mp, 1)) + | |
529 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
530 | XFS_FSB_TO_B(mp, 1)); | |
531 | } | |
532 | ||
533 | /* | |
534 | * Removing the attribute fork of a file | |
535 | * the inode being truncated: inode size | |
536 | * the inode's bmap btree: max depth * block size | |
537 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
538 | * the agf for each of the ags: 4 * sector size | |
539 | * the agfl for each of the ags: 4 * sector size | |
540 | * the super block to reflect the freed blocks: sector size | |
541 | * worst case split in allocation btrees per extent assuming 4 extents: | |
542 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
543 | */ | |
544 | STATIC uint | |
545 | xfs_calc_attrinval_reservation( | |
546 | struct xfs_mount *mp) | |
547 | { | |
23956703 | 548 | return MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
549 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), |
550 | XFS_FSB_TO_B(mp, 1))), | |
551 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
552 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
553 | XFS_FSB_TO_B(mp, 1)))); | |
554 | } | |
555 | ||
556 | /* | |
557 | * Setting an attribute at mount time. | |
558 | * the inode getting the attribute | |
559 | * the superblock for allocations | |
560 | * the agfs extents are allocated from | |
561 | * the attribute btree * max depth | |
562 | * the inode allocation btree | |
563 | * Since attribute transaction space is dependent on the size of the attribute, | |
564 | * the calculation is done partially at mount time and partially at runtime(see | |
565 | * below). | |
566 | */ | |
567 | STATIC uint | |
568 | xfs_calc_attrsetm_reservation( | |
569 | struct xfs_mount *mp) | |
570 | { | |
571 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 572 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
573 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
574 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1)); | |
575 | } | |
576 | ||
577 | /* | |
578 | * Setting an attribute at runtime, transaction space unit per block. | |
579 | * the superblock for allocations: sector size | |
580 | * the inode bmap btree could join or split: max depth * block size | |
581 | * Since the runtime attribute transaction space is dependent on the total | |
582 | * blocks needed for the 1st bmap, here we calculate out the space unit for | |
583 | * one block so that the caller could figure out the total space according | |
3d3c8b52 JL |
584 | * to the attibute extent length in blocks by: |
585 | * ext * M_RES(mp)->tr_attrsetrt.tr_logres | |
7fd36c44 DC |
586 | */ |
587 | STATIC uint | |
588 | xfs_calc_attrsetrt_reservation( | |
589 | struct xfs_mount *mp) | |
590 | { | |
591 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
592 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), | |
593 | XFS_FSB_TO_B(mp, 1)); | |
594 | } | |
595 | ||
596 | /* | |
597 | * Removing an attribute. | |
598 | * the inode: inode size | |
599 | * the attribute btree could join: max depth * block size | |
600 | * the inode bmap btree could join or split: max depth * block size | |
601 | * And the bmap_finish transaction can free the attr blocks freed giving: | |
602 | * the agf for the ag in which the blocks live: 2 * sector size | |
603 | * the agfl for the ag in which the blocks live: 2 * sector size | |
604 | * the superblock for the free block count: sector size | |
605 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
606 | */ | |
607 | STATIC uint | |
608 | xfs_calc_attrrm_reservation( | |
609 | struct xfs_mount *mp) | |
610 | { | |
611 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 612 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
613 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, |
614 | XFS_FSB_TO_B(mp, 1)) + | |
615 | (uint)XFS_FSB_TO_B(mp, | |
616 | XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + | |
617 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), | |
618 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
619 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
620 | XFS_FSB_TO_B(mp, 1)))); | |
621 | } | |
622 | ||
623 | /* | |
624 | * Clearing a bad agino number in an agi hash bucket. | |
625 | */ | |
626 | STATIC uint | |
627 | xfs_calc_clear_agi_bucket_reservation( | |
628 | struct xfs_mount *mp) | |
629 | { | |
630 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
631 | } | |
632 | ||
633 | /* | |
634 | * Clearing the quotaflags in the superblock. | |
635 | * the super block for changing quota flags: sector size | |
636 | */ | |
637 | STATIC uint | |
638 | xfs_calc_qm_sbchange_reservation( | |
639 | struct xfs_mount *mp) | |
640 | { | |
641 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
642 | } | |
643 | ||
644 | /* | |
645 | * Adjusting quota limits. | |
646 | * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) | |
647 | */ | |
648 | STATIC uint | |
649 | xfs_calc_qm_setqlim_reservation( | |
650 | struct xfs_mount *mp) | |
651 | { | |
652 | return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot)); | |
653 | } | |
654 | ||
655 | /* | |
656 | * Allocating quota on disk if needed. | |
3d3c8b52 | 657 | * the write transaction log space: M_RES(mp)->tr_write.tr_logres |
7fd36c44 DC |
658 | * the unit of quota allocation: one system block size |
659 | */ | |
660 | STATIC uint | |
661 | xfs_calc_qm_dqalloc_reservation( | |
662 | struct xfs_mount *mp) | |
663 | { | |
23956703 | 664 | ASSERT(M_RES(mp)->tr_write.tr_logres); |
3d3c8b52 | 665 | return M_RES(mp)->tr_write.tr_logres + |
7fd36c44 DC |
666 | xfs_calc_buf_res(1, |
667 | XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1); | |
668 | } | |
669 | ||
670 | /* | |
671 | * Turning off quotas. | |
672 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
673 | * the superblock for the quota flags: sector size | |
674 | */ | |
675 | STATIC uint | |
676 | xfs_calc_qm_quotaoff_reservation( | |
677 | struct xfs_mount *mp) | |
678 | { | |
679 | return sizeof(struct xfs_qoff_logitem) * 2 + | |
680 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
681 | } | |
682 | ||
683 | /* | |
684 | * End of turning off quotas. | |
685 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
686 | */ | |
687 | STATIC uint | |
688 | xfs_calc_qm_quotaoff_end_reservation( | |
689 | struct xfs_mount *mp) | |
690 | { | |
691 | return sizeof(struct xfs_qoff_logitem) * 2; | |
692 | } | |
693 | ||
694 | /* | |
695 | * Syncing the incore super block changes to disk. | |
696 | * the super block to reflect the changes: sector size | |
697 | */ | |
698 | STATIC uint | |
699 | xfs_calc_sb_reservation( | |
700 | struct xfs_mount *mp) | |
701 | { | |
702 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
703 | } | |
704 | ||
705 | void | |
706 | xfs_trans_resv_calc( | |
707 | struct xfs_mount *mp, | |
708 | struct xfs_trans_resv *resp) | |
709 | { | |
0eadd102 JL |
710 | /* |
711 | * The following transactions are logged in physical format and | |
712 | * require a permanent reservation on space. | |
713 | */ | |
714 | resp->tr_write.tr_logres = xfs_calc_write_reservation(mp); | |
715 | resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT; | |
716 | resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
717 | ||
718 | resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp); | |
719 | resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT; | |
720 | resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
721 | ||
722 | resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp); | |
723 | resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT; | |
724 | resp->tr_rename.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
725 | ||
726 | resp->tr_link.tr_logres = xfs_calc_link_reservation(mp); | |
727 | resp->tr_link.tr_logcount = XFS_LINK_LOG_COUNT; | |
728 | resp->tr_link.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
729 | ||
730 | resp->tr_remove.tr_logres = xfs_calc_remove_reservation(mp); | |
731 | resp->tr_remove.tr_logcount = XFS_REMOVE_LOG_COUNT; | |
732 | resp->tr_remove.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
733 | ||
734 | resp->tr_symlink.tr_logres = xfs_calc_symlink_reservation(mp); | |
735 | resp->tr_symlink.tr_logcount = XFS_SYMLINK_LOG_COUNT; | |
736 | resp->tr_symlink.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
737 | ||
738 | resp->tr_create.tr_logres = xfs_calc_create_reservation(mp); | |
739 | resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT; | |
740 | resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
741 | ||
742 | resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); | |
743 | resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; | |
744 | resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
745 | ||
746 | resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp); | |
747 | resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT; | |
748 | resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
749 | ||
750 | resp->tr_addafork.tr_logres = xfs_calc_addafork_reservation(mp); | |
751 | resp->tr_addafork.tr_logcount = XFS_ADDAFORK_LOG_COUNT; | |
752 | resp->tr_addafork.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
753 | ||
754 | resp->tr_attrinval.tr_logres = xfs_calc_attrinval_reservation(mp); | |
755 | resp->tr_attrinval.tr_logcount = XFS_ATTRINVAL_LOG_COUNT; | |
756 | resp->tr_attrinval.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
757 | ||
758 | resp->tr_attrsetm.tr_logres = xfs_calc_attrsetm_reservation(mp); | |
759 | resp->tr_attrsetm.tr_logcount = XFS_ATTRSET_LOG_COUNT; | |
760 | resp->tr_attrsetm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
761 | ||
762 | resp->tr_attrrm.tr_logres = xfs_calc_attrrm_reservation(mp); | |
763 | resp->tr_attrrm.tr_logcount = XFS_ATTRRM_LOG_COUNT; | |
764 | resp->tr_attrrm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
765 | ||
766 | resp->tr_growrtalloc.tr_logres = xfs_calc_growrtalloc_reservation(mp); | |
767 | resp->tr_growrtalloc.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT; | |
768 | resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
769 | ||
770 | resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp); | |
771 | resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT; | |
772 | resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
773 | ||
774 | /* | |
775 | * The following transactions are logged in logical format with | |
776 | * a default log count. | |
777 | */ | |
778 | resp->tr_qm_sbchange.tr_logres = xfs_calc_qm_sbchange_reservation(mp); | |
779 | resp->tr_qm_sbchange.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
780 | ||
781 | resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp); | |
782 | resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
783 | ||
784 | resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp); | |
785 | resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
786 | ||
787 | resp->tr_qm_equotaoff.tr_logres = | |
788 | xfs_calc_qm_quotaoff_end_reservation(mp); | |
789 | resp->tr_qm_equotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
790 | ||
791 | resp->tr_sb.tr_logres = xfs_calc_sb_reservation(mp); | |
792 | resp->tr_sb.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
793 | ||
794 | /* The following transaction are logged in logical format */ | |
795 | resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp); | |
796 | resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp); | |
797 | resp->tr_swrite.tr_logres = xfs_calc_swrite_reservation(mp); | |
20996c93 | 798 | resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp); |
0eadd102 JL |
799 | resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp); |
800 | resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp); | |
801 | resp->tr_clearagi.tr_logres = xfs_calc_clear_agi_bucket_reservation(mp); | |
802 | resp->tr_growrtzero.tr_logres = xfs_calc_growrtzero_reservation(mp); | |
803 | resp->tr_growrtfree.tr_logres = xfs_calc_growrtfree_reservation(mp); | |
7fd36c44 | 804 | } |