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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" |
d6cf1305 | 29 | #include "xfs_da_btree.h" |
7fd36c44 | 30 | #include "xfs_inode.h" |
a4fbe6ab | 31 | #include "xfs_bmap_btree.h" |
7fd36c44 | 32 | #include "xfs_ialloc.h" |
7fd36c44 | 33 | #include "xfs_quota.h" |
239880ef | 34 | #include "xfs_trans.h" |
7fd36c44 DC |
35 | #include "xfs_qm.h" |
36 | #include "xfs_trans_space.h" | |
37 | #include "xfs_trace.h" | |
38 | ||
39 | /* | |
40 | * A buffer has a format structure overhead in the log in addition | |
41 | * to the data, so we need to take this into account when reserving | |
42 | * space in a transaction for a buffer. Round the space required up | |
43 | * to a multiple of 128 bytes so that we don't change the historical | |
44 | * reservation that has been used for this overhead. | |
45 | */ | |
46 | STATIC uint | |
47 | xfs_buf_log_overhead(void) | |
48 | { | |
49 | return round_up(sizeof(struct xlog_op_header) + | |
50 | sizeof(struct xfs_buf_log_format), 128); | |
51 | } | |
52 | ||
53 | /* | |
54 | * Calculate out transaction log reservation per item in bytes. | |
55 | * | |
56 | * The nbufs argument is used to indicate the number of items that | |
57 | * will be changed in a transaction. size is used to tell how many | |
58 | * bytes should be reserved per item. | |
59 | */ | |
60 | STATIC uint | |
61 | xfs_calc_buf_res( | |
62 | uint nbufs, | |
63 | uint size) | |
64 | { | |
65 | return nbufs * (size + xfs_buf_log_overhead()); | |
66 | } | |
67 | ||
23956703 DC |
68 | /* |
69 | * Logging inodes is really tricksy. They are logged in memory format, | |
70 | * which means that what we write into the log doesn't directly translate into | |
71 | * the amount of space they use on disk. | |
72 | * | |
73 | * Case in point - btree format forks in memory format use more space than the | |
74 | * on-disk format. In memory, the buffer contains a normal btree block header so | |
75 | * the btree code can treat it as though it is just another generic buffer. | |
76 | * However, when we write it to the inode fork, we don't write all of this | |
77 | * header as it isn't needed. e.g. the root is only ever in the inode, so | |
78 | * there's no need for sibling pointers which would waste 16 bytes of space. | |
79 | * | |
80 | * Hence when we have an inode with a maximally sized btree format fork, then | |
81 | * amount of information we actually log is greater than the size of the inode | |
82 | * on disk. Hence we need an inode reservation function that calculates all this | |
83 | * correctly. So, we log: | |
84 | * | |
fe4c224a DC |
85 | * - 4 log op headers for object |
86 | * - for the ilf, the inode core and 2 forks | |
23956703 | 87 | * - inode log format object |
fe4c224a DC |
88 | * - the inode core |
89 | * - two inode forks containing bmap btree root blocks. | |
90 | * - the btree data contained by both forks will fit into the inode size, | |
91 | * hence when combined with the inode core above, we have a total of the | |
92 | * actual inode size. | |
93 | * - the BMBT headers need to be accounted separately, as they are | |
94 | * additional to the records and pointers that fit inside the inode | |
95 | * forks. | |
23956703 DC |
96 | */ |
97 | STATIC uint | |
98 | xfs_calc_inode_res( | |
99 | struct xfs_mount *mp, | |
100 | uint ninodes) | |
101 | { | |
fe4c224a DC |
102 | return ninodes * |
103 | (4 * 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)); | |
23956703 DC |
107 | } |
108 | ||
9d43b180 BF |
109 | /* |
110 | * The free inode btree is a conditional feature and the log reservation | |
111 | * requirements differ slightly from that of the traditional inode allocation | |
112 | * btree. The finobt tracks records for inode chunks with at least one free | |
113 | * inode. A record can be removed from the tree for an inode allocation | |
114 | * or free and thus the finobt reservation is unconditional across: | |
115 | * | |
116 | * - inode allocation | |
117 | * - inode free | |
118 | * - inode chunk allocation | |
119 | * | |
120 | * The 'modify' param indicates to include the record modification scenario. The | |
121 | * 'alloc' param indicates to include the reservation for free space btree | |
122 | * modifications on behalf of finobt modifications. This is required only for | |
123 | * transactions that do not already account for free space btree modifications. | |
124 | * | |
125 | * the free inode btree: max depth * block size | |
126 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
127 | * the free inode btree entry: block size | |
128 | */ | |
129 | STATIC uint | |
130 | xfs_calc_finobt_res( | |
131 | struct xfs_mount *mp, | |
132 | int alloc, | |
133 | int modify) | |
134 | { | |
135 | uint res; | |
136 | ||
137 | if (!xfs_sb_version_hasfinobt(&mp->m_sb)) | |
138 | return 0; | |
139 | ||
140 | res = xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)); | |
141 | if (alloc) | |
142 | res += xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
143 | XFS_FSB_TO_B(mp, 1)); | |
144 | if (modify) | |
145 | res += (uint)XFS_FSB_TO_B(mp, 1); | |
146 | ||
147 | return res; | |
148 | } | |
149 | ||
7fd36c44 DC |
150 | /* |
151 | * Various log reservation values. | |
152 | * | |
153 | * These are based on the size of the file system block because that is what | |
154 | * most transactions manipulate. Each adds in an additional 128 bytes per | |
155 | * item logged to try to account for the overhead of the transaction mechanism. | |
156 | * | |
157 | * Note: Most of the reservations underestimate the number of allocation | |
158 | * groups into which they could free extents in the xfs_bmap_finish() call. | |
159 | * This is because the number in the worst case is quite high and quite | |
160 | * unusual. In order to fix this we need to change xfs_bmap_finish() to free | |
161 | * extents in only a single AG at a time. This will require changes to the | |
162 | * EFI code as well, however, so that the EFI for the extents not freed is | |
163 | * logged again in each transaction. See SGI PV #261917. | |
164 | * | |
165 | * Reservation functions here avoid a huge stack in xfs_trans_init due to | |
166 | * register overflow from temporaries in the calculations. | |
167 | */ | |
168 | ||
169 | ||
170 | /* | |
171 | * In a write transaction we can allocate a maximum of 2 | |
172 | * extents. This gives: | |
173 | * the inode getting the new extents: inode size | |
174 | * the inode's bmap btree: max depth * block size | |
175 | * the agfs of the ags from which the extents are allocated: 2 * sector | |
176 | * the superblock free block counter: sector size | |
177 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
178 | * And the bmap_finish transaction can free bmap blocks in a join: | |
179 | * the agfs of the ags containing the blocks: 2 * sector size | |
180 | * the agfls of the ags containing the blocks: 2 * sector size | |
181 | * the super block free block counter: sector size | |
182 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
183 | */ | |
184 | STATIC uint | |
185 | xfs_calc_write_reservation( | |
186 | struct xfs_mount *mp) | |
187 | { | |
188 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 189 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
190 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), |
191 | XFS_FSB_TO_B(mp, 1)) + | |
192 | xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
193 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
194 | XFS_FSB_TO_B(mp, 1))), | |
195 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
196 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
197 | XFS_FSB_TO_B(mp, 1)))); | |
198 | } | |
199 | ||
200 | /* | |
201 | * In truncating a file we free up to two extents at once. We can modify: | |
202 | * the inode being truncated: inode size | |
203 | * the inode's bmap btree: (max depth + 1) * block size | |
204 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
205 | * the agf for each of the ags: 4 * sector size | |
206 | * the agfl for each of the ags: 4 * sector size | |
207 | * the super block to reflect the freed blocks: sector size | |
208 | * worst case split in allocation btrees per extent assuming 4 extents: | |
209 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
210 | * the inode btree: max depth * blocksize | |
211 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
212 | */ | |
213 | STATIC uint | |
214 | xfs_calc_itruncate_reservation( | |
215 | struct xfs_mount *mp) | |
216 | { | |
217 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 218 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
219 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, |
220 | XFS_FSB_TO_B(mp, 1))), | |
221 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
222 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
223 | XFS_FSB_TO_B(mp, 1)) + | |
224 | xfs_calc_buf_res(5, 0) + | |
225 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
226 | XFS_FSB_TO_B(mp, 1)) + | |
126cd105 | 227 | xfs_calc_buf_res(2 + mp->m_ialloc_blks + |
7fd36c44 DC |
228 | mp->m_in_maxlevels, 0))); |
229 | } | |
230 | ||
231 | /* | |
232 | * In renaming a files we can modify: | |
233 | * the four inodes involved: 4 * inode size | |
234 | * the two directory btrees: 2 * (max depth + v2) * dir block size | |
235 | * the two directory bmap btrees: 2 * max depth * block size | |
236 | * And the bmap_finish transaction can free dir and bmap blocks (two sets | |
237 | * of bmap blocks) giving: | |
238 | * the agf for the ags in which the blocks live: 3 * sector size | |
239 | * the agfl for the ags in which the blocks live: 3 * sector size | |
240 | * the superblock for the free block count: sector size | |
241 | * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size | |
242 | */ | |
243 | STATIC uint | |
244 | xfs_calc_rename_reservation( | |
245 | struct xfs_mount *mp) | |
246 | { | |
247 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 248 | MAX((xfs_calc_inode_res(mp, 4) + |
7fd36c44 DC |
249 | xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), |
250 | XFS_FSB_TO_B(mp, 1))), | |
251 | (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + | |
252 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3), | |
253 | XFS_FSB_TO_B(mp, 1)))); | |
254 | } | |
255 | ||
ab297431 ZYW |
256 | /* |
257 | * For removing an inode from unlinked list at first, we can modify: | |
258 | * the agi hash list and counters: sector size | |
259 | * the on disk inode before ours in the agi hash list: inode cluster size | |
260 | */ | |
261 | STATIC uint | |
262 | xfs_calc_iunlink_remove_reservation( | |
263 | struct xfs_mount *mp) | |
264 | { | |
265 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
fe986f9d | 266 | max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size); |
ab297431 ZYW |
267 | } |
268 | ||
7fd36c44 DC |
269 | /* |
270 | * For creating a link to an inode: | |
271 | * the parent directory inode: inode size | |
272 | * the linked inode: inode size | |
273 | * the directory btree could split: (max depth + v2) * dir block size | |
274 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
275 | * And the bmap_finish transaction can free some bmap blocks giving: | |
276 | * the agf for the ag in which the blocks live: sector size | |
277 | * the agfl for the ag in which the blocks live: sector size | |
278 | * the superblock for the free block count: sector size | |
279 | * the allocation btrees: 2 trees * (2 * max depth - 1) * block size | |
280 | */ | |
281 | STATIC uint | |
282 | xfs_calc_link_reservation( | |
283 | struct xfs_mount *mp) | |
284 | { | |
285 | return XFS_DQUOT_LOGRES(mp) + | |
ab297431 | 286 | xfs_calc_iunlink_remove_reservation(mp) + |
23956703 | 287 | MAX((xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
288 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
289 | XFS_FSB_TO_B(mp, 1))), | |
290 | (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
291 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
292 | XFS_FSB_TO_B(mp, 1)))); | |
293 | } | |
294 | ||
99b6436b ZYW |
295 | /* |
296 | * For adding an inode to unlinked list we can modify: | |
297 | * the agi hash list: sector size | |
298 | * the unlinked inode: inode size | |
299 | */ | |
300 | STATIC uint | |
301 | xfs_calc_iunlink_add_reservation(xfs_mount_t *mp) | |
302 | { | |
303 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
304 | xfs_calc_inode_res(mp, 1); | |
305 | } | |
306 | ||
7fd36c44 DC |
307 | /* |
308 | * For removing a directory entry we can modify: | |
309 | * the parent directory inode: inode size | |
310 | * the removed inode: inode size | |
311 | * the directory btree could join: (max depth + v2) * dir block size | |
312 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
313 | * And the bmap_finish transaction can free the dir and bmap blocks giving: | |
314 | * the agf for the ag in which the blocks live: 2 * sector size | |
315 | * the agfl for the ag in which the blocks live: 2 * sector size | |
316 | * the superblock for the free block count: sector size | |
317 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
318 | */ | |
319 | STATIC uint | |
320 | xfs_calc_remove_reservation( | |
321 | struct xfs_mount *mp) | |
322 | { | |
323 | return XFS_DQUOT_LOGRES(mp) + | |
99b6436b ZYW |
324 | xfs_calc_iunlink_add_reservation(mp) + |
325 | MAX((xfs_calc_inode_res(mp, 1) + | |
7fd36c44 DC |
326 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
327 | XFS_FSB_TO_B(mp, 1))), | |
99b6436b | 328 | (xfs_calc_buf_res(4, mp->m_sb.sb_sectsize) + |
7fd36c44 DC |
329 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), |
330 | XFS_FSB_TO_B(mp, 1)))); | |
331 | } | |
332 | ||
333 | /* | |
334 | * For create, break it in to the two cases that the transaction | |
335 | * covers. We start with the modify case - allocation done by modification | |
336 | * of the state of existing inodes - and the allocation case. | |
337 | */ | |
338 | ||
339 | /* | |
340 | * For create we can modify: | |
341 | * the parent directory inode: inode size | |
342 | * the new inode: inode size | |
343 | * the inode btree entry: block size | |
344 | * the superblock for the nlink flag: sector size | |
345 | * the directory btree: (max depth + v2) * dir block size | |
346 | * the directory inode's bmap btree: (max depth + v2) * block size | |
9d43b180 | 347 | * the finobt (record modification and allocation btrees) |
7fd36c44 DC |
348 | */ |
349 | STATIC uint | |
350 | xfs_calc_create_resv_modify( | |
351 | struct xfs_mount *mp) | |
352 | { | |
23956703 | 353 | return xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
354 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
355 | (uint)XFS_FSB_TO_B(mp, 1) + | |
9d43b180 BF |
356 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1)) + |
357 | xfs_calc_finobt_res(mp, 1, 1); | |
7fd36c44 DC |
358 | } |
359 | ||
360 | /* | |
361 | * For create we can allocate some inodes giving: | |
362 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
363 | * the superblock for the nlink flag: sector size | |
126cd105 | 364 | * the inode blocks allocated: mp->m_ialloc_blks * blocksize |
7fd36c44 DC |
365 | * the inode btree: max depth * blocksize |
366 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
367 | */ | |
368 | STATIC uint | |
369 | xfs_calc_create_resv_alloc( | |
370 | struct xfs_mount *mp) | |
371 | { | |
372 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
373 | mp->m_sb.sb_sectsize + | |
126cd105 | 374 | xfs_calc_buf_res(mp->m_ialloc_blks, XFS_FSB_TO_B(mp, 1)) + |
7fd36c44 DC |
375 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + |
376 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
377 | XFS_FSB_TO_B(mp, 1)); | |
378 | } | |
379 | ||
380 | STATIC uint | |
381 | __xfs_calc_create_reservation( | |
382 | struct xfs_mount *mp) | |
383 | { | |
384 | return XFS_DQUOT_LOGRES(mp) + | |
385 | MAX(xfs_calc_create_resv_alloc(mp), | |
386 | xfs_calc_create_resv_modify(mp)); | |
387 | } | |
388 | ||
389 | /* | |
390 | * For icreate we can allocate some inodes giving: | |
391 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
392 | * the superblock for the nlink flag: sector size | |
393 | * the inode btree: max depth * blocksize | |
394 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
9d43b180 | 395 | * the finobt (record insertion) |
7fd36c44 DC |
396 | */ |
397 | STATIC uint | |
398 | xfs_calc_icreate_resv_alloc( | |
399 | struct xfs_mount *mp) | |
400 | { | |
401 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
402 | mp->m_sb.sb_sectsize + | |
403 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + | |
404 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
9d43b180 BF |
405 | XFS_FSB_TO_B(mp, 1)) + |
406 | xfs_calc_finobt_res(mp, 0, 0); | |
7fd36c44 DC |
407 | } |
408 | ||
409 | STATIC uint | |
410 | xfs_calc_icreate_reservation(xfs_mount_t *mp) | |
411 | { | |
412 | return XFS_DQUOT_LOGRES(mp) + | |
413 | MAX(xfs_calc_icreate_resv_alloc(mp), | |
414 | xfs_calc_create_resv_modify(mp)); | |
415 | } | |
416 | ||
417 | STATIC uint | |
418 | xfs_calc_create_reservation( | |
419 | struct xfs_mount *mp) | |
420 | { | |
421 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
422 | return xfs_calc_icreate_reservation(mp); | |
423 | return __xfs_calc_create_reservation(mp); | |
424 | ||
425 | } | |
426 | ||
99b6436b ZYW |
427 | STATIC uint |
428 | xfs_calc_create_tmpfile_reservation( | |
429 | struct xfs_mount *mp) | |
430 | { | |
431 | uint res = XFS_DQUOT_LOGRES(mp); | |
432 | ||
433 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
434 | res += xfs_calc_icreate_resv_alloc(mp); | |
435 | else | |
436 | res += xfs_calc_create_resv_alloc(mp); | |
437 | ||
438 | return res + xfs_calc_iunlink_add_reservation(mp); | |
439 | } | |
440 | ||
7fd36c44 DC |
441 | /* |
442 | * Making a new directory is the same as creating a new file. | |
443 | */ | |
444 | STATIC uint | |
445 | xfs_calc_mkdir_reservation( | |
446 | struct xfs_mount *mp) | |
447 | { | |
448 | return xfs_calc_create_reservation(mp); | |
449 | } | |
450 | ||
451 | ||
452 | /* | |
453 | * Making a new symplink is the same as creating a new file, but | |
454 | * with the added blocks for remote symlink data which can be up to 1kB in | |
455 | * length (MAXPATHLEN). | |
456 | */ | |
457 | STATIC uint | |
458 | xfs_calc_symlink_reservation( | |
459 | struct xfs_mount *mp) | |
460 | { | |
461 | return xfs_calc_create_reservation(mp) + | |
462 | xfs_calc_buf_res(1, MAXPATHLEN); | |
463 | } | |
464 | ||
465 | /* | |
466 | * In freeing an inode we can modify: | |
467 | * the inode being freed: inode size | |
468 | * the super block free inode counter: sector size | |
469 | * the agi hash list and counters: sector size | |
470 | * the inode btree entry: block size | |
471 | * the on disk inode before ours in the agi hash list: inode cluster size | |
472 | * the inode btree: max depth * blocksize | |
473 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
9d43b180 | 474 | * the finobt (record insertion, removal or modification) |
7fd36c44 DC |
475 | */ |
476 | STATIC uint | |
477 | xfs_calc_ifree_reservation( | |
478 | struct xfs_mount *mp) | |
479 | { | |
480 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 481 | xfs_calc_inode_res(mp, 1) + |
ab297431 | 482 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
7fd36c44 | 483 | xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + |
ab297431 | 484 | xfs_calc_iunlink_remove_reservation(mp) + |
7fd36c44 | 485 | xfs_calc_buf_res(1, 0) + |
126cd105 | 486 | xfs_calc_buf_res(2 + mp->m_ialloc_blks + |
7fd36c44 DC |
487 | mp->m_in_maxlevels, 0) + |
488 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
9d43b180 BF |
489 | XFS_FSB_TO_B(mp, 1)) + |
490 | xfs_calc_finobt_res(mp, 0, 1); | |
7fd36c44 DC |
491 | } |
492 | ||
493 | /* | |
494 | * When only changing the inode we log the inode and possibly the superblock | |
495 | * We also add a bit of slop for the transaction stuff. | |
496 | */ | |
497 | STATIC uint | |
498 | xfs_calc_ichange_reservation( | |
499 | struct xfs_mount *mp) | |
500 | { | |
501 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 DC |
502 | xfs_calc_inode_res(mp, 1) + |
503 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
7fd36c44 DC |
504 | |
505 | } | |
506 | ||
507 | /* | |
508 | * Growing the data section of the filesystem. | |
509 | * superblock | |
510 | * agi and agf | |
511 | * allocation btrees | |
512 | */ | |
513 | STATIC uint | |
514 | xfs_calc_growdata_reservation( | |
515 | struct xfs_mount *mp) | |
516 | { | |
517 | return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
518 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
519 | XFS_FSB_TO_B(mp, 1)); | |
520 | } | |
521 | ||
522 | /* | |
523 | * Growing the rt section of the filesystem. | |
524 | * In the first set of transactions (ALLOC) we allocate space to the | |
525 | * bitmap or summary files. | |
526 | * superblock: sector size | |
527 | * agf of the ag from which the extent is allocated: sector size | |
528 | * bmap btree for bitmap/summary inode: max depth * blocksize | |
529 | * bitmap/summary inode: inode size | |
530 | * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize | |
531 | */ | |
532 | STATIC uint | |
533 | xfs_calc_growrtalloc_reservation( | |
534 | struct xfs_mount *mp) | |
535 | { | |
536 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
537 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), | |
538 | XFS_FSB_TO_B(mp, 1)) + | |
23956703 | 539 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
540 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), |
541 | XFS_FSB_TO_B(mp, 1)); | |
542 | } | |
543 | ||
544 | /* | |
545 | * Growing the rt section of the filesystem. | |
546 | * In the second set of transactions (ZERO) we zero the new metadata blocks. | |
547 | * one bitmap/summary block: blocksize | |
548 | */ | |
549 | STATIC uint | |
550 | xfs_calc_growrtzero_reservation( | |
551 | struct xfs_mount *mp) | |
552 | { | |
553 | return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize); | |
554 | } | |
555 | ||
556 | /* | |
557 | * Growing the rt section of the filesystem. | |
558 | * In the third set of transactions (FREE) we update metadata without | |
559 | * allocating any new blocks. | |
560 | * superblock: sector size | |
561 | * bitmap inode: inode size | |
562 | * summary inode: inode size | |
563 | * one bitmap block: blocksize | |
564 | * summary blocks: new summary size | |
565 | */ | |
566 | STATIC uint | |
567 | xfs_calc_growrtfree_reservation( | |
568 | struct xfs_mount *mp) | |
569 | { | |
570 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
23956703 | 571 | xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
572 | xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) + |
573 | xfs_calc_buf_res(1, mp->m_rsumsize); | |
574 | } | |
575 | ||
576 | /* | |
577 | * Logging the inode modification timestamp on a synchronous write. | |
578 | * inode | |
579 | */ | |
580 | STATIC uint | |
581 | xfs_calc_swrite_reservation( | |
582 | struct xfs_mount *mp) | |
583 | { | |
23956703 | 584 | return xfs_calc_inode_res(mp, 1); |
7fd36c44 DC |
585 | } |
586 | ||
587 | /* | |
588 | * Logging the inode mode bits when writing a setuid/setgid file | |
589 | * inode | |
590 | */ | |
591 | STATIC uint | |
23956703 DC |
592 | xfs_calc_writeid_reservation( |
593 | struct xfs_mount *mp) | |
7fd36c44 | 594 | { |
23956703 | 595 | return xfs_calc_inode_res(mp, 1); |
7fd36c44 DC |
596 | } |
597 | ||
598 | /* | |
599 | * Converting the inode from non-attributed to attributed. | |
600 | * the inode being converted: inode size | |
601 | * agf block and superblock (for block allocation) | |
602 | * the new block (directory sized) | |
603 | * bmap blocks for the new directory block | |
604 | * allocation btrees | |
605 | */ | |
606 | STATIC uint | |
607 | xfs_calc_addafork_reservation( | |
608 | struct xfs_mount *mp) | |
609 | { | |
610 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 611 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 | 612 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + |
8f66193c | 613 | xfs_calc_buf_res(1, mp->m_dir_geo->blksize) + |
7fd36c44 DC |
614 | xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, |
615 | XFS_FSB_TO_B(mp, 1)) + | |
616 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
617 | XFS_FSB_TO_B(mp, 1)); | |
618 | } | |
619 | ||
620 | /* | |
621 | * Removing the attribute fork of a file | |
622 | * the inode being truncated: inode size | |
623 | * the inode's bmap btree: max depth * block size | |
624 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
625 | * the agf for each of the ags: 4 * sector size | |
626 | * the agfl for each of the ags: 4 * sector size | |
627 | * the super block to reflect the freed blocks: sector size | |
628 | * worst case split in allocation btrees per extent assuming 4 extents: | |
629 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
630 | */ | |
631 | STATIC uint | |
632 | xfs_calc_attrinval_reservation( | |
633 | struct xfs_mount *mp) | |
634 | { | |
23956703 | 635 | return MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
636 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), |
637 | XFS_FSB_TO_B(mp, 1))), | |
638 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
639 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
640 | XFS_FSB_TO_B(mp, 1)))); | |
641 | } | |
642 | ||
643 | /* | |
644 | * Setting an attribute at mount time. | |
645 | * the inode getting the attribute | |
646 | * the superblock for allocations | |
647 | * the agfs extents are allocated from | |
648 | * the attribute btree * max depth | |
649 | * the inode allocation btree | |
650 | * Since attribute transaction space is dependent on the size of the attribute, | |
651 | * the calculation is done partially at mount time and partially at runtime(see | |
652 | * below). | |
653 | */ | |
654 | STATIC uint | |
655 | xfs_calc_attrsetm_reservation( | |
656 | struct xfs_mount *mp) | |
657 | { | |
658 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 659 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
660 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
661 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1)); | |
662 | } | |
663 | ||
664 | /* | |
665 | * Setting an attribute at runtime, transaction space unit per block. | |
666 | * the superblock for allocations: sector size | |
667 | * the inode bmap btree could join or split: max depth * block size | |
668 | * Since the runtime attribute transaction space is dependent on the total | |
669 | * blocks needed for the 1st bmap, here we calculate out the space unit for | |
670 | * one block so that the caller could figure out the total space according | |
3d3c8b52 JL |
671 | * to the attibute extent length in blocks by: |
672 | * ext * M_RES(mp)->tr_attrsetrt.tr_logres | |
7fd36c44 DC |
673 | */ |
674 | STATIC uint | |
675 | xfs_calc_attrsetrt_reservation( | |
676 | struct xfs_mount *mp) | |
677 | { | |
678 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
679 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), | |
680 | XFS_FSB_TO_B(mp, 1)); | |
681 | } | |
682 | ||
683 | /* | |
684 | * Removing an attribute. | |
685 | * the inode: inode size | |
686 | * the attribute btree could join: max depth * block size | |
687 | * the inode bmap btree could join or split: max depth * block size | |
688 | * And the bmap_finish transaction can free the attr blocks freed giving: | |
689 | * the agf for the ag in which the blocks live: 2 * sector size | |
690 | * the agfl for the ag in which the blocks live: 2 * sector size | |
691 | * the superblock for the free block count: sector size | |
692 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
693 | */ | |
694 | STATIC uint | |
695 | xfs_calc_attrrm_reservation( | |
696 | struct xfs_mount *mp) | |
697 | { | |
698 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 699 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
700 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, |
701 | XFS_FSB_TO_B(mp, 1)) + | |
702 | (uint)XFS_FSB_TO_B(mp, | |
703 | XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + | |
704 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), | |
705 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
706 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
707 | XFS_FSB_TO_B(mp, 1)))); | |
708 | } | |
709 | ||
710 | /* | |
711 | * Clearing a bad agino number in an agi hash bucket. | |
712 | */ | |
713 | STATIC uint | |
714 | xfs_calc_clear_agi_bucket_reservation( | |
715 | struct xfs_mount *mp) | |
716 | { | |
717 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
718 | } | |
719 | ||
720 | /* | |
721 | * Clearing the quotaflags in the superblock. | |
722 | * the super block for changing quota flags: sector size | |
723 | */ | |
724 | STATIC uint | |
725 | xfs_calc_qm_sbchange_reservation( | |
726 | struct xfs_mount *mp) | |
727 | { | |
728 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
729 | } | |
730 | ||
731 | /* | |
732 | * Adjusting quota limits. | |
733 | * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) | |
734 | */ | |
735 | STATIC uint | |
736 | xfs_calc_qm_setqlim_reservation( | |
737 | struct xfs_mount *mp) | |
738 | { | |
739 | return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot)); | |
740 | } | |
741 | ||
742 | /* | |
743 | * Allocating quota on disk if needed. | |
410b11a6 | 744 | * the write transaction log space for quota file extent allocation |
7fd36c44 DC |
745 | * the unit of quota allocation: one system block size |
746 | */ | |
747 | STATIC uint | |
748 | xfs_calc_qm_dqalloc_reservation( | |
749 | struct xfs_mount *mp) | |
750 | { | |
410b11a6 | 751 | return xfs_calc_write_reservation(mp) + |
7fd36c44 DC |
752 | xfs_calc_buf_res(1, |
753 | XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1); | |
754 | } | |
755 | ||
756 | /* | |
757 | * Turning off quotas. | |
758 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
759 | * the superblock for the quota flags: sector size | |
760 | */ | |
761 | STATIC uint | |
762 | xfs_calc_qm_quotaoff_reservation( | |
763 | struct xfs_mount *mp) | |
764 | { | |
765 | return sizeof(struct xfs_qoff_logitem) * 2 + | |
766 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
767 | } | |
768 | ||
769 | /* | |
770 | * End of turning off quotas. | |
771 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
772 | */ | |
773 | STATIC uint | |
774 | xfs_calc_qm_quotaoff_end_reservation( | |
775 | struct xfs_mount *mp) | |
776 | { | |
777 | return sizeof(struct xfs_qoff_logitem) * 2; | |
778 | } | |
779 | ||
780 | /* | |
781 | * Syncing the incore super block changes to disk. | |
782 | * the super block to reflect the changes: sector size | |
783 | */ | |
784 | STATIC uint | |
785 | xfs_calc_sb_reservation( | |
786 | struct xfs_mount *mp) | |
787 | { | |
788 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
789 | } | |
790 | ||
791 | void | |
792 | xfs_trans_resv_calc( | |
793 | struct xfs_mount *mp, | |
794 | struct xfs_trans_resv *resp) | |
795 | { | |
0eadd102 JL |
796 | /* |
797 | * The following transactions are logged in physical format and | |
798 | * require a permanent reservation on space. | |
799 | */ | |
800 | resp->tr_write.tr_logres = xfs_calc_write_reservation(mp); | |
801 | resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT; | |
802 | resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
803 | ||
804 | resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp); | |
805 | resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT; | |
806 | resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
807 | ||
808 | resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp); | |
809 | resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT; | |
810 | resp->tr_rename.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
811 | ||
812 | resp->tr_link.tr_logres = xfs_calc_link_reservation(mp); | |
813 | resp->tr_link.tr_logcount = XFS_LINK_LOG_COUNT; | |
814 | resp->tr_link.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
815 | ||
816 | resp->tr_remove.tr_logres = xfs_calc_remove_reservation(mp); | |
817 | resp->tr_remove.tr_logcount = XFS_REMOVE_LOG_COUNT; | |
818 | resp->tr_remove.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
819 | ||
820 | resp->tr_symlink.tr_logres = xfs_calc_symlink_reservation(mp); | |
821 | resp->tr_symlink.tr_logcount = XFS_SYMLINK_LOG_COUNT; | |
822 | resp->tr_symlink.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
823 | ||
824 | resp->tr_create.tr_logres = xfs_calc_create_reservation(mp); | |
825 | resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT; | |
826 | resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
827 | ||
99b6436b ZYW |
828 | resp->tr_create_tmpfile.tr_logres = |
829 | xfs_calc_create_tmpfile_reservation(mp); | |
830 | resp->tr_create_tmpfile.tr_logcount = XFS_CREATE_TMPFILE_LOG_COUNT; | |
831 | resp->tr_create_tmpfile.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
832 | ||
0eadd102 JL |
833 | resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); |
834 | resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; | |
835 | resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
836 | ||
837 | resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp); | |
838 | resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT; | |
839 | resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
840 | ||
841 | resp->tr_addafork.tr_logres = xfs_calc_addafork_reservation(mp); | |
842 | resp->tr_addafork.tr_logcount = XFS_ADDAFORK_LOG_COUNT; | |
843 | resp->tr_addafork.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
844 | ||
845 | resp->tr_attrinval.tr_logres = xfs_calc_attrinval_reservation(mp); | |
846 | resp->tr_attrinval.tr_logcount = XFS_ATTRINVAL_LOG_COUNT; | |
847 | resp->tr_attrinval.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
848 | ||
849 | resp->tr_attrsetm.tr_logres = xfs_calc_attrsetm_reservation(mp); | |
850 | resp->tr_attrsetm.tr_logcount = XFS_ATTRSET_LOG_COUNT; | |
851 | resp->tr_attrsetm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
852 | ||
853 | resp->tr_attrrm.tr_logres = xfs_calc_attrrm_reservation(mp); | |
854 | resp->tr_attrrm.tr_logcount = XFS_ATTRRM_LOG_COUNT; | |
855 | resp->tr_attrrm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
856 | ||
857 | resp->tr_growrtalloc.tr_logres = xfs_calc_growrtalloc_reservation(mp); | |
858 | resp->tr_growrtalloc.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT; | |
859 | resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
860 | ||
861 | resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp); | |
862 | resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT; | |
863 | resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
864 | ||
865 | /* | |
866 | * The following transactions are logged in logical format with | |
867 | * a default log count. | |
868 | */ | |
869 | resp->tr_qm_sbchange.tr_logres = xfs_calc_qm_sbchange_reservation(mp); | |
870 | resp->tr_qm_sbchange.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
871 | ||
872 | resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp); | |
873 | resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
874 | ||
875 | resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp); | |
876 | resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
877 | ||
878 | resp->tr_qm_equotaoff.tr_logres = | |
879 | xfs_calc_qm_quotaoff_end_reservation(mp); | |
880 | resp->tr_qm_equotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
881 | ||
882 | resp->tr_sb.tr_logres = xfs_calc_sb_reservation(mp); | |
883 | resp->tr_sb.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
884 | ||
885 | /* The following transaction are logged in logical format */ | |
886 | resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp); | |
887 | resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp); | |
20996c93 | 888 | resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp); |
0eadd102 JL |
889 | resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp); |
890 | resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp); | |
891 | resp->tr_clearagi.tr_logres = xfs_calc_clear_agi_bucket_reservation(mp); | |
892 | resp->tr_growrtzero.tr_logres = xfs_calc_growrtzero_reservation(mp); | |
893 | resp->tr_growrtfree.tr_logres = xfs_calc_growrtfree_reservation(mp); | |
7fd36c44 | 894 | } |