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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" | |
70a9883c | 21 | #include "xfs_shared.h" |
239880ef DC |
22 | #include "xfs_format.h" |
23 | #include "xfs_log_format.h" | |
7fd36c44 | 24 | #include "xfs_trans_resv.h" |
7fd36c44 DC |
25 | #include "xfs_sb.h" |
26 | #include "xfs_ag.h" | |
27 | #include "xfs_mount.h" | |
57062787 | 28 | #include "xfs_da_format.h" |
7fd36c44 | 29 | #include "xfs_inode.h" |
a4fbe6ab | 30 | #include "xfs_bmap_btree.h" |
7fd36c44 | 31 | #include "xfs_ialloc.h" |
7fd36c44 | 32 | #include "xfs_quota.h" |
239880ef | 33 | #include "xfs_trans.h" |
7fd36c44 DC |
34 | #include "xfs_qm.h" |
35 | #include "xfs_trans_space.h" | |
36 | #include "xfs_trace.h" | |
37 | ||
38 | /* | |
39 | * A buffer has a format structure overhead in the log in addition | |
40 | * to the data, so we need to take this into account when reserving | |
41 | * space in a transaction for a buffer. Round the space required up | |
42 | * to a multiple of 128 bytes so that we don't change the historical | |
43 | * reservation that has been used for this overhead. | |
44 | */ | |
45 | STATIC uint | |
46 | xfs_buf_log_overhead(void) | |
47 | { | |
48 | return round_up(sizeof(struct xlog_op_header) + | |
49 | sizeof(struct xfs_buf_log_format), 128); | |
50 | } | |
51 | ||
52 | /* | |
53 | * Calculate out transaction log reservation per item in bytes. | |
54 | * | |
55 | * The nbufs argument is used to indicate the number of items that | |
56 | * will be changed in a transaction. size is used to tell how many | |
57 | * bytes should be reserved per item. | |
58 | */ | |
59 | STATIC uint | |
60 | xfs_calc_buf_res( | |
61 | uint nbufs, | |
62 | uint size) | |
63 | { | |
64 | return nbufs * (size + xfs_buf_log_overhead()); | |
65 | } | |
66 | ||
23956703 DC |
67 | /* |
68 | * Logging inodes is really tricksy. They are logged in memory format, | |
69 | * which means that what we write into the log doesn't directly translate into | |
70 | * the amount of space they use on disk. | |
71 | * | |
72 | * Case in point - btree format forks in memory format use more space than the | |
73 | * on-disk format. In memory, the buffer contains a normal btree block header so | |
74 | * the btree code can treat it as though it is just another generic buffer. | |
75 | * However, when we write it to the inode fork, we don't write all of this | |
76 | * header as it isn't needed. e.g. the root is only ever in the inode, so | |
77 | * there's no need for sibling pointers which would waste 16 bytes of space. | |
78 | * | |
79 | * Hence when we have an inode with a maximally sized btree format fork, then | |
80 | * amount of information we actually log is greater than the size of the inode | |
81 | * on disk. Hence we need an inode reservation function that calculates all this | |
82 | * correctly. So, we log: | |
83 | * | |
84 | * - log op headers for object | |
85 | * - inode log format object | |
86 | * - the entire inode contents (core + 2 forks) | |
87 | * - two bmap btree block headers | |
88 | */ | |
89 | STATIC uint | |
90 | xfs_calc_inode_res( | |
91 | struct xfs_mount *mp, | |
92 | uint ninodes) | |
93 | { | |
94 | return ninodes * (sizeof(struct xlog_op_header) + | |
95 | sizeof(struct xfs_inode_log_format) + | |
96 | mp->m_sb.sb_inodesize + | |
97 | 2 * XFS_BMBT_BLOCK_LEN(mp)); | |
98 | } | |
99 | ||
7fd36c44 DC |
100 | /* |
101 | * Various log reservation values. | |
102 | * | |
103 | * These are based on the size of the file system block because that is what | |
104 | * most transactions manipulate. Each adds in an additional 128 bytes per | |
105 | * item logged to try to account for the overhead of the transaction mechanism. | |
106 | * | |
107 | * Note: Most of the reservations underestimate the number of allocation | |
108 | * groups into which they could free extents in the xfs_bmap_finish() call. | |
109 | * This is because the number in the worst case is quite high and quite | |
110 | * unusual. In order to fix this we need to change xfs_bmap_finish() to free | |
111 | * extents in only a single AG at a time. This will require changes to the | |
112 | * EFI code as well, however, so that the EFI for the extents not freed is | |
113 | * logged again in each transaction. See SGI PV #261917. | |
114 | * | |
115 | * Reservation functions here avoid a huge stack in xfs_trans_init due to | |
116 | * register overflow from temporaries in the calculations. | |
117 | */ | |
118 | ||
119 | ||
120 | /* | |
121 | * In a write transaction we can allocate a maximum of 2 | |
122 | * extents. This gives: | |
123 | * the inode getting the new extents: inode size | |
124 | * the inode's bmap btree: max depth * block size | |
125 | * the agfs of the ags from which the extents are allocated: 2 * sector | |
126 | * the superblock free block counter: sector size | |
127 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
128 | * And the bmap_finish transaction can free bmap blocks in a join: | |
129 | * the agfs of the ags containing the blocks: 2 * sector size | |
130 | * the agfls of the ags containing the blocks: 2 * sector size | |
131 | * the super block free block counter: sector size | |
132 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
133 | */ | |
134 | STATIC uint | |
135 | xfs_calc_write_reservation( | |
136 | struct xfs_mount *mp) | |
137 | { | |
138 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 139 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
140 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), |
141 | XFS_FSB_TO_B(mp, 1)) + | |
142 | xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
143 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
144 | XFS_FSB_TO_B(mp, 1))), | |
145 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
146 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
147 | XFS_FSB_TO_B(mp, 1)))); | |
148 | } | |
149 | ||
150 | /* | |
151 | * In truncating a file we free up to two extents at once. We can modify: | |
152 | * the inode being truncated: inode size | |
153 | * the inode's bmap btree: (max depth + 1) * block size | |
154 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
155 | * the agf for each of the ags: 4 * sector size | |
156 | * the agfl for each of the ags: 4 * sector size | |
157 | * the super block to reflect the freed blocks: sector size | |
158 | * worst case split in allocation btrees per extent assuming 4 extents: | |
159 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
160 | * the inode btree: max depth * blocksize | |
161 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
162 | */ | |
163 | STATIC uint | |
164 | xfs_calc_itruncate_reservation( | |
165 | struct xfs_mount *mp) | |
166 | { | |
167 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 168 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
169 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, |
170 | XFS_FSB_TO_B(mp, 1))), | |
171 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
172 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
173 | XFS_FSB_TO_B(mp, 1)) + | |
174 | xfs_calc_buf_res(5, 0) + | |
175 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
176 | XFS_FSB_TO_B(mp, 1)) + | |
177 | xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + | |
178 | mp->m_in_maxlevels, 0))); | |
179 | } | |
180 | ||
181 | /* | |
182 | * In renaming a files we can modify: | |
183 | * the four inodes involved: 4 * inode size | |
184 | * the two directory btrees: 2 * (max depth + v2) * dir block size | |
185 | * the two directory bmap btrees: 2 * max depth * block size | |
186 | * And the bmap_finish transaction can free dir and bmap blocks (two sets | |
187 | * of bmap blocks) giving: | |
188 | * the agf for the ags in which the blocks live: 3 * sector size | |
189 | * the agfl for the ags in which the blocks live: 3 * sector size | |
190 | * the superblock for the free block count: sector size | |
191 | * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size | |
192 | */ | |
193 | STATIC uint | |
194 | xfs_calc_rename_reservation( | |
195 | struct xfs_mount *mp) | |
196 | { | |
197 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 198 | MAX((xfs_calc_inode_res(mp, 4) + |
7fd36c44 DC |
199 | xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), |
200 | XFS_FSB_TO_B(mp, 1))), | |
201 | (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + | |
202 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3), | |
203 | XFS_FSB_TO_B(mp, 1)))); | |
204 | } | |
205 | ||
206 | /* | |
207 | * For creating a link to an inode: | |
208 | * the parent directory inode: inode size | |
209 | * the linked inode: inode size | |
210 | * the directory btree could split: (max depth + v2) * dir block size | |
211 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
212 | * And the bmap_finish transaction can free some bmap blocks giving: | |
213 | * the agf for the ag in which the blocks live: sector size | |
214 | * the agfl for the ag in which the blocks live: sector size | |
215 | * the superblock for the free block count: sector size | |
216 | * the allocation btrees: 2 trees * (2 * max depth - 1) * block size | |
217 | */ | |
218 | STATIC uint | |
219 | xfs_calc_link_reservation( | |
220 | struct xfs_mount *mp) | |
221 | { | |
222 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 223 | MAX((xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
224 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
225 | XFS_FSB_TO_B(mp, 1))), | |
226 | (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
227 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
228 | XFS_FSB_TO_B(mp, 1)))); | |
229 | } | |
230 | ||
231 | /* | |
232 | * For removing a directory entry we can modify: | |
233 | * the parent directory inode: inode size | |
234 | * the removed inode: inode size | |
235 | * the directory btree could join: (max depth + v2) * dir block size | |
236 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
237 | * And the bmap_finish transaction can free the dir and bmap blocks giving: | |
238 | * the agf for the ag in which the blocks live: 2 * sector size | |
239 | * the agfl for the ag in which the blocks live: 2 * sector size | |
240 | * the superblock for the free block count: sector size | |
241 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
242 | */ | |
243 | STATIC uint | |
244 | xfs_calc_remove_reservation( | |
245 | struct xfs_mount *mp) | |
246 | { | |
247 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 248 | MAX((xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
249 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
250 | XFS_FSB_TO_B(mp, 1))), | |
251 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
252 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
253 | XFS_FSB_TO_B(mp, 1)))); | |
254 | } | |
255 | ||
256 | /* | |
257 | * For create, break it in to the two cases that the transaction | |
258 | * covers. We start with the modify case - allocation done by modification | |
259 | * of the state of existing inodes - and the allocation case. | |
260 | */ | |
261 | ||
262 | /* | |
263 | * For create we can modify: | |
264 | * the parent directory inode: inode size | |
265 | * the new inode: inode size | |
266 | * the inode btree entry: block size | |
267 | * the superblock for the nlink flag: sector size | |
268 | * the directory btree: (max depth + v2) * dir block size | |
269 | * the directory inode's bmap btree: (max depth + v2) * block size | |
270 | */ | |
271 | STATIC uint | |
272 | xfs_calc_create_resv_modify( | |
273 | struct xfs_mount *mp) | |
274 | { | |
23956703 | 275 | return xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
276 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
277 | (uint)XFS_FSB_TO_B(mp, 1) + | |
278 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1)); | |
279 | } | |
280 | ||
281 | /* | |
282 | * For create we can allocate some inodes giving: | |
283 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
284 | * the superblock for the nlink flag: sector size | |
285 | * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize | |
286 | * the inode btree: max depth * blocksize | |
287 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
288 | */ | |
289 | STATIC uint | |
290 | xfs_calc_create_resv_alloc( | |
291 | struct xfs_mount *mp) | |
292 | { | |
293 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
294 | mp->m_sb.sb_sectsize + | |
295 | xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), XFS_FSB_TO_B(mp, 1)) + | |
296 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + | |
297 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
298 | XFS_FSB_TO_B(mp, 1)); | |
299 | } | |
300 | ||
301 | STATIC uint | |
302 | __xfs_calc_create_reservation( | |
303 | struct xfs_mount *mp) | |
304 | { | |
305 | return XFS_DQUOT_LOGRES(mp) + | |
306 | MAX(xfs_calc_create_resv_alloc(mp), | |
307 | xfs_calc_create_resv_modify(mp)); | |
308 | } | |
309 | ||
310 | /* | |
311 | * For icreate we can allocate some inodes giving: | |
312 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
313 | * the superblock for the nlink flag: sector size | |
314 | * the inode btree: max depth * blocksize | |
315 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
316 | */ | |
317 | STATIC uint | |
318 | xfs_calc_icreate_resv_alloc( | |
319 | struct xfs_mount *mp) | |
320 | { | |
321 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
322 | mp->m_sb.sb_sectsize + | |
323 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + | |
324 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
325 | XFS_FSB_TO_B(mp, 1)); | |
326 | } | |
327 | ||
328 | STATIC uint | |
329 | xfs_calc_icreate_reservation(xfs_mount_t *mp) | |
330 | { | |
331 | return XFS_DQUOT_LOGRES(mp) + | |
332 | MAX(xfs_calc_icreate_resv_alloc(mp), | |
333 | xfs_calc_create_resv_modify(mp)); | |
334 | } | |
335 | ||
336 | STATIC uint | |
337 | xfs_calc_create_reservation( | |
338 | struct xfs_mount *mp) | |
339 | { | |
340 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
341 | return xfs_calc_icreate_reservation(mp); | |
342 | return __xfs_calc_create_reservation(mp); | |
343 | ||
344 | } | |
345 | ||
346 | /* | |
347 | * Making a new directory is the same as creating a new file. | |
348 | */ | |
349 | STATIC uint | |
350 | xfs_calc_mkdir_reservation( | |
351 | struct xfs_mount *mp) | |
352 | { | |
353 | return xfs_calc_create_reservation(mp); | |
354 | } | |
355 | ||
356 | ||
357 | /* | |
358 | * Making a new symplink is the same as creating a new file, but | |
359 | * with the added blocks for remote symlink data which can be up to 1kB in | |
360 | * length (MAXPATHLEN). | |
361 | */ | |
362 | STATIC uint | |
363 | xfs_calc_symlink_reservation( | |
364 | struct xfs_mount *mp) | |
365 | { | |
366 | return xfs_calc_create_reservation(mp) + | |
367 | xfs_calc_buf_res(1, MAXPATHLEN); | |
368 | } | |
369 | ||
370 | /* | |
371 | * In freeing an inode we can modify: | |
372 | * the inode being freed: inode size | |
373 | * the super block free inode counter: sector size | |
374 | * the agi hash list and counters: sector size | |
375 | * the inode btree entry: block size | |
376 | * the on disk inode before ours in the agi hash list: inode cluster size | |
377 | * the inode btree: max depth * blocksize | |
378 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
379 | */ | |
380 | STATIC uint | |
381 | xfs_calc_ifree_reservation( | |
382 | struct xfs_mount *mp) | |
383 | { | |
384 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 385 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
386 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + |
387 | xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + | |
388 | MAX((__uint16_t)XFS_FSB_TO_B(mp, 1), | |
389 | XFS_INODE_CLUSTER_SIZE(mp)) + | |
390 | xfs_calc_buf_res(1, 0) + | |
391 | xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + | |
392 | mp->m_in_maxlevels, 0) + | |
393 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
394 | XFS_FSB_TO_B(mp, 1)); | |
395 | } | |
396 | ||
397 | /* | |
398 | * When only changing the inode we log the inode and possibly the superblock | |
399 | * We also add a bit of slop for the transaction stuff. | |
400 | */ | |
401 | STATIC uint | |
402 | xfs_calc_ichange_reservation( | |
403 | struct xfs_mount *mp) | |
404 | { | |
405 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 DC |
406 | xfs_calc_inode_res(mp, 1) + |
407 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
7fd36c44 DC |
408 | |
409 | } | |
410 | ||
411 | /* | |
412 | * Growing the data section of the filesystem. | |
413 | * superblock | |
414 | * agi and agf | |
415 | * allocation btrees | |
416 | */ | |
417 | STATIC uint | |
418 | xfs_calc_growdata_reservation( | |
419 | struct xfs_mount *mp) | |
420 | { | |
421 | return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
422 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
423 | XFS_FSB_TO_B(mp, 1)); | |
424 | } | |
425 | ||
426 | /* | |
427 | * Growing the rt section of the filesystem. | |
428 | * In the first set of transactions (ALLOC) we allocate space to the | |
429 | * bitmap or summary files. | |
430 | * superblock: sector size | |
431 | * agf of the ag from which the extent is allocated: sector size | |
432 | * bmap btree for bitmap/summary inode: max depth * blocksize | |
433 | * bitmap/summary inode: inode size | |
434 | * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize | |
435 | */ | |
436 | STATIC uint | |
437 | xfs_calc_growrtalloc_reservation( | |
438 | struct xfs_mount *mp) | |
439 | { | |
440 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
441 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), | |
442 | XFS_FSB_TO_B(mp, 1)) + | |
23956703 | 443 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
444 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), |
445 | XFS_FSB_TO_B(mp, 1)); | |
446 | } | |
447 | ||
448 | /* | |
449 | * Growing the rt section of the filesystem. | |
450 | * In the second set of transactions (ZERO) we zero the new metadata blocks. | |
451 | * one bitmap/summary block: blocksize | |
452 | */ | |
453 | STATIC uint | |
454 | xfs_calc_growrtzero_reservation( | |
455 | struct xfs_mount *mp) | |
456 | { | |
457 | return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize); | |
458 | } | |
459 | ||
460 | /* | |
461 | * Growing the rt section of the filesystem. | |
462 | * In the third set of transactions (FREE) we update metadata without | |
463 | * allocating any new blocks. | |
464 | * superblock: sector size | |
465 | * bitmap inode: inode size | |
466 | * summary inode: inode size | |
467 | * one bitmap block: blocksize | |
468 | * summary blocks: new summary size | |
469 | */ | |
470 | STATIC uint | |
471 | xfs_calc_growrtfree_reservation( | |
472 | struct xfs_mount *mp) | |
473 | { | |
474 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
23956703 | 475 | xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
476 | xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) + |
477 | xfs_calc_buf_res(1, mp->m_rsumsize); | |
478 | } | |
479 | ||
480 | /* | |
481 | * Logging the inode modification timestamp on a synchronous write. | |
482 | * inode | |
483 | */ | |
484 | STATIC uint | |
485 | xfs_calc_swrite_reservation( | |
486 | struct xfs_mount *mp) | |
487 | { | |
23956703 | 488 | return xfs_calc_inode_res(mp, 1); |
7fd36c44 DC |
489 | } |
490 | ||
491 | /* | |
492 | * Logging the inode mode bits when writing a setuid/setgid file | |
493 | * inode | |
494 | */ | |
495 | STATIC uint | |
23956703 DC |
496 | xfs_calc_writeid_reservation( |
497 | struct xfs_mount *mp) | |
7fd36c44 | 498 | { |
23956703 | 499 | return xfs_calc_inode_res(mp, 1); |
7fd36c44 DC |
500 | } |
501 | ||
502 | /* | |
503 | * Converting the inode from non-attributed to attributed. | |
504 | * the inode being converted: inode size | |
505 | * agf block and superblock (for block allocation) | |
506 | * the new block (directory sized) | |
507 | * bmap blocks for the new directory block | |
508 | * allocation btrees | |
509 | */ | |
510 | STATIC uint | |
511 | xfs_calc_addafork_reservation( | |
512 | struct xfs_mount *mp) | |
513 | { | |
514 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 515 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
516 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + |
517 | xfs_calc_buf_res(1, mp->m_dirblksize) + | |
518 | xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, | |
519 | XFS_FSB_TO_B(mp, 1)) + | |
520 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
521 | XFS_FSB_TO_B(mp, 1)); | |
522 | } | |
523 | ||
524 | /* | |
525 | * Removing the attribute fork of a file | |
526 | * the inode being truncated: inode size | |
527 | * the inode's bmap btree: max depth * block size | |
528 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
529 | * the agf for each of the ags: 4 * sector size | |
530 | * the agfl for each of the ags: 4 * sector size | |
531 | * the super block to reflect the freed blocks: sector size | |
532 | * worst case split in allocation btrees per extent assuming 4 extents: | |
533 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
534 | */ | |
535 | STATIC uint | |
536 | xfs_calc_attrinval_reservation( | |
537 | struct xfs_mount *mp) | |
538 | { | |
23956703 | 539 | return MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
540 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), |
541 | XFS_FSB_TO_B(mp, 1))), | |
542 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
543 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
544 | XFS_FSB_TO_B(mp, 1)))); | |
545 | } | |
546 | ||
547 | /* | |
548 | * Setting an attribute at mount time. | |
549 | * the inode getting the attribute | |
550 | * the superblock for allocations | |
551 | * the agfs extents are allocated from | |
552 | * the attribute btree * max depth | |
553 | * the inode allocation btree | |
554 | * Since attribute transaction space is dependent on the size of the attribute, | |
555 | * the calculation is done partially at mount time and partially at runtime(see | |
556 | * below). | |
557 | */ | |
558 | STATIC uint | |
559 | xfs_calc_attrsetm_reservation( | |
560 | struct xfs_mount *mp) | |
561 | { | |
562 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 563 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
564 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
565 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1)); | |
566 | } | |
567 | ||
568 | /* | |
569 | * Setting an attribute at runtime, transaction space unit per block. | |
570 | * the superblock for allocations: sector size | |
571 | * the inode bmap btree could join or split: max depth * block size | |
572 | * Since the runtime attribute transaction space is dependent on the total | |
573 | * blocks needed for the 1st bmap, here we calculate out the space unit for | |
574 | * one block so that the caller could figure out the total space according | |
3d3c8b52 JL |
575 | * to the attibute extent length in blocks by: |
576 | * ext * M_RES(mp)->tr_attrsetrt.tr_logres | |
7fd36c44 DC |
577 | */ |
578 | STATIC uint | |
579 | xfs_calc_attrsetrt_reservation( | |
580 | struct xfs_mount *mp) | |
581 | { | |
582 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
583 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), | |
584 | XFS_FSB_TO_B(mp, 1)); | |
585 | } | |
586 | ||
587 | /* | |
588 | * Removing an attribute. | |
589 | * the inode: inode size | |
590 | * the attribute btree could join: max depth * block size | |
591 | * the inode bmap btree could join or split: max depth * block size | |
592 | * And the bmap_finish transaction can free the attr blocks freed giving: | |
593 | * the agf for the ag in which the blocks live: 2 * sector size | |
594 | * the agfl for the ag in which the blocks live: 2 * sector size | |
595 | * the superblock for the free block count: sector size | |
596 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
597 | */ | |
598 | STATIC uint | |
599 | xfs_calc_attrrm_reservation( | |
600 | struct xfs_mount *mp) | |
601 | { | |
602 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 603 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
604 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, |
605 | XFS_FSB_TO_B(mp, 1)) + | |
606 | (uint)XFS_FSB_TO_B(mp, | |
607 | XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + | |
608 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), | |
609 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
610 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
611 | XFS_FSB_TO_B(mp, 1)))); | |
612 | } | |
613 | ||
614 | /* | |
615 | * Clearing a bad agino number in an agi hash bucket. | |
616 | */ | |
617 | STATIC uint | |
618 | xfs_calc_clear_agi_bucket_reservation( | |
619 | struct xfs_mount *mp) | |
620 | { | |
621 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
622 | } | |
623 | ||
624 | /* | |
625 | * Clearing the quotaflags in the superblock. | |
626 | * the super block for changing quota flags: sector size | |
627 | */ | |
628 | STATIC uint | |
629 | xfs_calc_qm_sbchange_reservation( | |
630 | struct xfs_mount *mp) | |
631 | { | |
632 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
633 | } | |
634 | ||
635 | /* | |
636 | * Adjusting quota limits. | |
637 | * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) | |
638 | */ | |
639 | STATIC uint | |
640 | xfs_calc_qm_setqlim_reservation( | |
641 | struct xfs_mount *mp) | |
642 | { | |
643 | return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot)); | |
644 | } | |
645 | ||
646 | /* | |
647 | * Allocating quota on disk if needed. | |
3d3c8b52 | 648 | * the write transaction log space: M_RES(mp)->tr_write.tr_logres |
7fd36c44 DC |
649 | * the unit of quota allocation: one system block size |
650 | */ | |
651 | STATIC uint | |
652 | xfs_calc_qm_dqalloc_reservation( | |
653 | struct xfs_mount *mp) | |
654 | { | |
23956703 | 655 | ASSERT(M_RES(mp)->tr_write.tr_logres); |
3d3c8b52 | 656 | return M_RES(mp)->tr_write.tr_logres + |
7fd36c44 DC |
657 | xfs_calc_buf_res(1, |
658 | XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1); | |
659 | } | |
660 | ||
661 | /* | |
662 | * Turning off quotas. | |
663 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
664 | * the superblock for the quota flags: sector size | |
665 | */ | |
666 | STATIC uint | |
667 | xfs_calc_qm_quotaoff_reservation( | |
668 | struct xfs_mount *mp) | |
669 | { | |
670 | return sizeof(struct xfs_qoff_logitem) * 2 + | |
671 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
672 | } | |
673 | ||
674 | /* | |
675 | * End of turning off quotas. | |
676 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
677 | */ | |
678 | STATIC uint | |
679 | xfs_calc_qm_quotaoff_end_reservation( | |
680 | struct xfs_mount *mp) | |
681 | { | |
682 | return sizeof(struct xfs_qoff_logitem) * 2; | |
683 | } | |
684 | ||
685 | /* | |
686 | * Syncing the incore super block changes to disk. | |
687 | * the super block to reflect the changes: sector size | |
688 | */ | |
689 | STATIC uint | |
690 | xfs_calc_sb_reservation( | |
691 | struct xfs_mount *mp) | |
692 | { | |
693 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
694 | } | |
695 | ||
696 | void | |
697 | xfs_trans_resv_calc( | |
698 | struct xfs_mount *mp, | |
699 | struct xfs_trans_resv *resp) | |
700 | { | |
0eadd102 JL |
701 | /* |
702 | * The following transactions are logged in physical format and | |
703 | * require a permanent reservation on space. | |
704 | */ | |
705 | resp->tr_write.tr_logres = xfs_calc_write_reservation(mp); | |
706 | resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT; | |
707 | resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
708 | ||
709 | resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp); | |
710 | resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT; | |
711 | resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
712 | ||
713 | resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp); | |
714 | resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT; | |
715 | resp->tr_rename.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
716 | ||
717 | resp->tr_link.tr_logres = xfs_calc_link_reservation(mp); | |
718 | resp->tr_link.tr_logcount = XFS_LINK_LOG_COUNT; | |
719 | resp->tr_link.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
720 | ||
721 | resp->tr_remove.tr_logres = xfs_calc_remove_reservation(mp); | |
722 | resp->tr_remove.tr_logcount = XFS_REMOVE_LOG_COUNT; | |
723 | resp->tr_remove.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
724 | ||
725 | resp->tr_symlink.tr_logres = xfs_calc_symlink_reservation(mp); | |
726 | resp->tr_symlink.tr_logcount = XFS_SYMLINK_LOG_COUNT; | |
727 | resp->tr_symlink.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
728 | ||
729 | resp->tr_create.tr_logres = xfs_calc_create_reservation(mp); | |
730 | resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT; | |
731 | resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
732 | ||
733 | resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); | |
734 | resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; | |
735 | resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
736 | ||
737 | resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp); | |
738 | resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT; | |
739 | resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
740 | ||
741 | resp->tr_addafork.tr_logres = xfs_calc_addafork_reservation(mp); | |
742 | resp->tr_addafork.tr_logcount = XFS_ADDAFORK_LOG_COUNT; | |
743 | resp->tr_addafork.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
744 | ||
745 | resp->tr_attrinval.tr_logres = xfs_calc_attrinval_reservation(mp); | |
746 | resp->tr_attrinval.tr_logcount = XFS_ATTRINVAL_LOG_COUNT; | |
747 | resp->tr_attrinval.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
748 | ||
749 | resp->tr_attrsetm.tr_logres = xfs_calc_attrsetm_reservation(mp); | |
750 | resp->tr_attrsetm.tr_logcount = XFS_ATTRSET_LOG_COUNT; | |
751 | resp->tr_attrsetm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
752 | ||
753 | resp->tr_attrrm.tr_logres = xfs_calc_attrrm_reservation(mp); | |
754 | resp->tr_attrrm.tr_logcount = XFS_ATTRRM_LOG_COUNT; | |
755 | resp->tr_attrrm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
756 | ||
757 | resp->tr_growrtalloc.tr_logres = xfs_calc_growrtalloc_reservation(mp); | |
758 | resp->tr_growrtalloc.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT; | |
759 | resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
760 | ||
761 | resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp); | |
762 | resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT; | |
763 | resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
764 | ||
765 | /* | |
766 | * The following transactions are logged in logical format with | |
767 | * a default log count. | |
768 | */ | |
769 | resp->tr_qm_sbchange.tr_logres = xfs_calc_qm_sbchange_reservation(mp); | |
770 | resp->tr_qm_sbchange.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
771 | ||
772 | resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp); | |
773 | resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
774 | ||
775 | resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp); | |
776 | resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
777 | ||
778 | resp->tr_qm_equotaoff.tr_logres = | |
779 | xfs_calc_qm_quotaoff_end_reservation(mp); | |
780 | resp->tr_qm_equotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
781 | ||
782 | resp->tr_sb.tr_logres = xfs_calc_sb_reservation(mp); | |
783 | resp->tr_sb.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
784 | ||
785 | /* The following transaction are logged in logical format */ | |
786 | resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp); | |
787 | resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp); | |
788 | resp->tr_swrite.tr_logres = xfs_calc_swrite_reservation(mp); | |
20996c93 | 789 | resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp); |
0eadd102 JL |
790 | resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp); |
791 | resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp); | |
792 | resp->tr_clearagi.tr_logres = xfs_calc_clear_agi_bucket_reservation(mp); | |
793 | resp->tr_growrtzero.tr_logres = xfs_calc_growrtzero_reservation(mp); | |
794 | resp->tr_growrtfree.tr_logres = xfs_calc_growrtfree_reservation(mp); | |
7fd36c44 | 795 | } |