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