Commit | Line | Data |
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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 | 25 | #include "xfs_mount.h" |
57062787 | 26 | #include "xfs_da_format.h" |
d6cf1305 | 27 | #include "xfs_da_btree.h" |
7fd36c44 | 28 | #include "xfs_inode.h" |
a4fbe6ab | 29 | #include "xfs_bmap_btree.h" |
7fd36c44 | 30 | #include "xfs_ialloc.h" |
7fd36c44 | 31 | #include "xfs_quota.h" |
239880ef | 32 | #include "xfs_trans.h" |
7fd36c44 DC |
33 | #include "xfs_qm.h" |
34 | #include "xfs_trans_space.h" | |
35 | #include "xfs_trace.h" | |
36 | ||
37 | /* | |
38 | * A buffer has a format structure overhead in the log in addition | |
39 | * to the data, so we need to take this into account when reserving | |
40 | * space in a transaction for a buffer. Round the space required up | |
41 | * to a multiple of 128 bytes so that we don't change the historical | |
42 | * reservation that has been used for this overhead. | |
43 | */ | |
44 | STATIC uint | |
45 | xfs_buf_log_overhead(void) | |
46 | { | |
47 | return round_up(sizeof(struct xlog_op_header) + | |
48 | sizeof(struct xfs_buf_log_format), 128); | |
49 | } | |
50 | ||
51 | /* | |
52 | * Calculate out transaction log reservation per item in bytes. | |
53 | * | |
54 | * The nbufs argument is used to indicate the number of items that | |
55 | * will be changed in a transaction. size is used to tell how many | |
56 | * bytes should be reserved per item. | |
57 | */ | |
58 | STATIC uint | |
59 | xfs_calc_buf_res( | |
60 | uint nbufs, | |
61 | uint size) | |
62 | { | |
63 | return nbufs * (size + xfs_buf_log_overhead()); | |
64 | } | |
65 | ||
23956703 DC |
66 | /* |
67 | * Logging inodes is really tricksy. They are logged in memory format, | |
68 | * which means that what we write into the log doesn't directly translate into | |
69 | * the amount of space they use on disk. | |
70 | * | |
71 | * Case in point - btree format forks in memory format use more space than the | |
72 | * on-disk format. In memory, the buffer contains a normal btree block header so | |
73 | * the btree code can treat it as though it is just another generic buffer. | |
74 | * However, when we write it to the inode fork, we don't write all of this | |
75 | * header as it isn't needed. e.g. the root is only ever in the inode, so | |
76 | * there's no need for sibling pointers which would waste 16 bytes of space. | |
77 | * | |
78 | * Hence when we have an inode with a maximally sized btree format fork, then | |
79 | * amount of information we actually log is greater than the size of the inode | |
80 | * on disk. Hence we need an inode reservation function that calculates all this | |
81 | * correctly. So, we log: | |
82 | * | |
fe4c224a DC |
83 | * - 4 log op headers for object |
84 | * - for the ilf, the inode core and 2 forks | |
23956703 | 85 | * - inode log format object |
fe4c224a DC |
86 | * - the inode core |
87 | * - two inode forks containing bmap btree root blocks. | |
88 | * - the btree data contained by both forks will fit into the inode size, | |
89 | * hence when combined with the inode core above, we have a total of the | |
90 | * actual inode size. | |
91 | * - the BMBT headers need to be accounted separately, as they are | |
92 | * additional to the records and pointers that fit inside the inode | |
93 | * forks. | |
23956703 DC |
94 | */ |
95 | STATIC uint | |
96 | xfs_calc_inode_res( | |
97 | struct xfs_mount *mp, | |
98 | uint ninodes) | |
99 | { | |
fe4c224a DC |
100 | return ninodes * |
101 | (4 * sizeof(struct xlog_op_header) + | |
102 | sizeof(struct xfs_inode_log_format) + | |
103 | mp->m_sb.sb_inodesize + | |
104 | 2 * XFS_BMBT_BLOCK_LEN(mp)); | |
23956703 DC |
105 | } |
106 | ||
9d43b180 BF |
107 | /* |
108 | * The free inode btree is a conditional feature and the log reservation | |
109 | * requirements differ slightly from that of the traditional inode allocation | |
110 | * btree. The finobt tracks records for inode chunks with at least one free | |
111 | * inode. A record can be removed from the tree for an inode allocation | |
112 | * or free and thus the finobt reservation is unconditional across: | |
113 | * | |
114 | * - inode allocation | |
115 | * - inode free | |
116 | * - inode chunk allocation | |
117 | * | |
118 | * The 'modify' param indicates to include the record modification scenario. The | |
119 | * 'alloc' param indicates to include the reservation for free space btree | |
120 | * modifications on behalf of finobt modifications. This is required only for | |
121 | * transactions that do not already account for free space btree modifications. | |
122 | * | |
123 | * the free inode btree: max depth * block size | |
124 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
125 | * the free inode btree entry: block size | |
126 | */ | |
127 | STATIC uint | |
128 | xfs_calc_finobt_res( | |
129 | struct xfs_mount *mp, | |
130 | int alloc, | |
131 | int modify) | |
132 | { | |
133 | uint res; | |
134 | ||
135 | if (!xfs_sb_version_hasfinobt(&mp->m_sb)) | |
136 | return 0; | |
137 | ||
138 | res = xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)); | |
139 | if (alloc) | |
140 | res += xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
141 | XFS_FSB_TO_B(mp, 1)); | |
142 | if (modify) | |
143 | res += (uint)XFS_FSB_TO_B(mp, 1); | |
144 | ||
145 | return res; | |
146 | } | |
147 | ||
7fd36c44 DC |
148 | /* |
149 | * Various log reservation values. | |
150 | * | |
151 | * These are based on the size of the file system block because that is what | |
152 | * most transactions manipulate. Each adds in an additional 128 bytes per | |
153 | * item logged to try to account for the overhead of the transaction mechanism. | |
154 | * | |
155 | * Note: Most of the reservations underestimate the number of allocation | |
156 | * groups into which they could free extents in the xfs_bmap_finish() call. | |
157 | * This is because the number in the worst case is quite high and quite | |
158 | * unusual. In order to fix this we need to change xfs_bmap_finish() to free | |
159 | * extents in only a single AG at a time. This will require changes to the | |
160 | * EFI code as well, however, so that the EFI for the extents not freed is | |
161 | * logged again in each transaction. See SGI PV #261917. | |
162 | * | |
163 | * Reservation functions here avoid a huge stack in xfs_trans_init due to | |
164 | * register overflow from temporaries in the calculations. | |
165 | */ | |
166 | ||
167 | ||
168 | /* | |
169 | * In a write transaction we can allocate a maximum of 2 | |
170 | * extents. This gives: | |
171 | * the inode getting the new extents: inode size | |
172 | * the inode's bmap btree: max depth * block size | |
173 | * the agfs of the ags from which the extents are allocated: 2 * sector | |
174 | * the superblock free block counter: sector size | |
175 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
176 | * And the bmap_finish transaction can free bmap blocks in a join: | |
177 | * the agfs of the ags containing the blocks: 2 * sector size | |
178 | * the agfls of the ags containing the blocks: 2 * sector size | |
179 | * the super block free block counter: sector size | |
180 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
181 | */ | |
182 | STATIC uint | |
183 | xfs_calc_write_reservation( | |
184 | struct xfs_mount *mp) | |
185 | { | |
186 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 187 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
188 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), |
189 | XFS_FSB_TO_B(mp, 1)) + | |
190 | xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
191 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
192 | XFS_FSB_TO_B(mp, 1))), | |
193 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
194 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
195 | XFS_FSB_TO_B(mp, 1)))); | |
196 | } | |
197 | ||
198 | /* | |
199 | * In truncating a file we free up to two extents at once. We can modify: | |
200 | * the inode being truncated: inode size | |
201 | * the inode's bmap btree: (max depth + 1) * block size | |
202 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
203 | * the agf for each of the ags: 4 * sector size | |
204 | * the agfl for each of the ags: 4 * sector size | |
205 | * the super block to reflect the freed blocks: sector size | |
206 | * worst case split in allocation btrees per extent assuming 4 extents: | |
207 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
208 | * the inode btree: max depth * blocksize | |
209 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
210 | */ | |
211 | STATIC uint | |
212 | xfs_calc_itruncate_reservation( | |
213 | struct xfs_mount *mp) | |
214 | { | |
215 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 216 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
217 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, |
218 | XFS_FSB_TO_B(mp, 1))), | |
219 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
220 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
221 | XFS_FSB_TO_B(mp, 1)) + | |
222 | xfs_calc_buf_res(5, 0) + | |
223 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
224 | XFS_FSB_TO_B(mp, 1)) + | |
126cd105 | 225 | xfs_calc_buf_res(2 + mp->m_ialloc_blks + |
7fd36c44 DC |
226 | mp->m_in_maxlevels, 0))); |
227 | } | |
228 | ||
229 | /* | |
230 | * In renaming a files we can modify: | |
231 | * the four inodes involved: 4 * inode size | |
232 | * the two directory btrees: 2 * (max depth + v2) * dir block size | |
233 | * the two directory bmap btrees: 2 * max depth * block size | |
234 | * And the bmap_finish transaction can free dir and bmap blocks (two sets | |
235 | * of bmap blocks) giving: | |
236 | * the agf for the ags in which the blocks live: 3 * sector size | |
237 | * the agfl for the ags in which the blocks live: 3 * sector size | |
238 | * the superblock for the free block count: sector size | |
239 | * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size | |
240 | */ | |
241 | STATIC uint | |
242 | xfs_calc_rename_reservation( | |
243 | struct xfs_mount *mp) | |
244 | { | |
245 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 246 | MAX((xfs_calc_inode_res(mp, 4) + |
7fd36c44 DC |
247 | xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), |
248 | XFS_FSB_TO_B(mp, 1))), | |
249 | (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + | |
250 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3), | |
251 | XFS_FSB_TO_B(mp, 1)))); | |
252 | } | |
253 | ||
ab297431 ZYW |
254 | /* |
255 | * For removing an inode from unlinked list at first, we can modify: | |
256 | * the agi hash list and counters: sector size | |
257 | * the on disk inode before ours in the agi hash list: inode cluster size | |
258 | */ | |
259 | STATIC uint | |
260 | xfs_calc_iunlink_remove_reservation( | |
261 | struct xfs_mount *mp) | |
262 | { | |
263 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
fe986f9d | 264 | max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size); |
ab297431 ZYW |
265 | } |
266 | ||
7fd36c44 DC |
267 | /* |
268 | * For creating a link to an inode: | |
269 | * the parent directory inode: inode size | |
270 | * the linked inode: inode size | |
271 | * the directory btree could split: (max depth + v2) * dir block size | |
272 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
273 | * And the bmap_finish transaction can free some bmap blocks giving: | |
274 | * the agf for the ag in which the blocks live: sector size | |
275 | * the agfl for the ag in which the blocks live: sector size | |
276 | * the superblock for the free block count: sector size | |
277 | * the allocation btrees: 2 trees * (2 * max depth - 1) * block size | |
278 | */ | |
279 | STATIC uint | |
280 | xfs_calc_link_reservation( | |
281 | struct xfs_mount *mp) | |
282 | { | |
283 | return XFS_DQUOT_LOGRES(mp) + | |
ab297431 | 284 | xfs_calc_iunlink_remove_reservation(mp) + |
23956703 | 285 | MAX((xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
286 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
287 | XFS_FSB_TO_B(mp, 1))), | |
288 | (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
289 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
290 | XFS_FSB_TO_B(mp, 1)))); | |
291 | } | |
292 | ||
99b6436b ZYW |
293 | /* |
294 | * For adding an inode to unlinked list we can modify: | |
295 | * the agi hash list: sector size | |
296 | * the unlinked inode: inode size | |
297 | */ | |
298 | STATIC uint | |
299 | xfs_calc_iunlink_add_reservation(xfs_mount_t *mp) | |
300 | { | |
301 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
302 | xfs_calc_inode_res(mp, 1); | |
303 | } | |
304 | ||
7fd36c44 DC |
305 | /* |
306 | * For removing a directory entry we can modify: | |
307 | * the parent directory inode: inode size | |
308 | * the removed inode: inode size | |
309 | * the directory btree could join: (max depth + v2) * dir block size | |
310 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
311 | * And the bmap_finish transaction can free the dir and bmap blocks giving: | |
312 | * the agf for the ag in which the blocks live: 2 * sector size | |
313 | * the agfl for the ag in which the blocks live: 2 * sector size | |
314 | * the superblock for the free block count: sector size | |
315 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
316 | */ | |
317 | STATIC uint | |
318 | xfs_calc_remove_reservation( | |
319 | struct xfs_mount *mp) | |
320 | { | |
321 | return XFS_DQUOT_LOGRES(mp) + | |
99b6436b ZYW |
322 | xfs_calc_iunlink_add_reservation(mp) + |
323 | MAX((xfs_calc_inode_res(mp, 1) + | |
7fd36c44 DC |
324 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
325 | XFS_FSB_TO_B(mp, 1))), | |
99b6436b | 326 | (xfs_calc_buf_res(4, mp->m_sb.sb_sectsize) + |
7fd36c44 DC |
327 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), |
328 | XFS_FSB_TO_B(mp, 1)))); | |
329 | } | |
330 | ||
331 | /* | |
332 | * For create, break it in to the two cases that the transaction | |
333 | * covers. We start with the modify case - allocation done by modification | |
334 | * of the state of existing inodes - and the allocation case. | |
335 | */ | |
336 | ||
337 | /* | |
338 | * For create we can modify: | |
339 | * the parent directory inode: inode size | |
340 | * the new inode: inode size | |
341 | * the inode btree entry: block size | |
342 | * the superblock for the nlink flag: sector size | |
343 | * the directory btree: (max depth + v2) * dir block size | |
344 | * the directory inode's bmap btree: (max depth + v2) * block size | |
9d43b180 | 345 | * the finobt (record modification and allocation btrees) |
7fd36c44 DC |
346 | */ |
347 | STATIC uint | |
348 | xfs_calc_create_resv_modify( | |
349 | struct xfs_mount *mp) | |
350 | { | |
23956703 | 351 | return xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
352 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
353 | (uint)XFS_FSB_TO_B(mp, 1) + | |
9d43b180 BF |
354 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1)) + |
355 | xfs_calc_finobt_res(mp, 1, 1); | |
7fd36c44 DC |
356 | } |
357 | ||
358 | /* | |
359 | * For create we can allocate some inodes giving: | |
360 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
361 | * the superblock for the nlink flag: sector size | |
126cd105 | 362 | * the inode blocks allocated: mp->m_ialloc_blks * blocksize |
7fd36c44 DC |
363 | * the inode btree: max depth * blocksize |
364 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
365 | */ | |
366 | STATIC uint | |
367 | xfs_calc_create_resv_alloc( | |
368 | struct xfs_mount *mp) | |
369 | { | |
370 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
371 | mp->m_sb.sb_sectsize + | |
126cd105 | 372 | xfs_calc_buf_res(mp->m_ialloc_blks, XFS_FSB_TO_B(mp, 1)) + |
7fd36c44 DC |
373 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + |
374 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
375 | XFS_FSB_TO_B(mp, 1)); | |
376 | } | |
377 | ||
378 | STATIC uint | |
379 | __xfs_calc_create_reservation( | |
380 | struct xfs_mount *mp) | |
381 | { | |
382 | return XFS_DQUOT_LOGRES(mp) + | |
383 | MAX(xfs_calc_create_resv_alloc(mp), | |
384 | xfs_calc_create_resv_modify(mp)); | |
385 | } | |
386 | ||
387 | /* | |
388 | * For icreate we can allocate some inodes giving: | |
389 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
390 | * the superblock for the nlink flag: sector size | |
391 | * the inode btree: max depth * blocksize | |
392 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
9d43b180 | 393 | * the finobt (record insertion) |
7fd36c44 DC |
394 | */ |
395 | STATIC uint | |
396 | xfs_calc_icreate_resv_alloc( | |
397 | struct xfs_mount *mp) | |
398 | { | |
399 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
400 | mp->m_sb.sb_sectsize + | |
401 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + | |
402 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
9d43b180 BF |
403 | XFS_FSB_TO_B(mp, 1)) + |
404 | xfs_calc_finobt_res(mp, 0, 0); | |
7fd36c44 DC |
405 | } |
406 | ||
407 | STATIC uint | |
408 | xfs_calc_icreate_reservation(xfs_mount_t *mp) | |
409 | { | |
410 | return XFS_DQUOT_LOGRES(mp) + | |
411 | MAX(xfs_calc_icreate_resv_alloc(mp), | |
412 | xfs_calc_create_resv_modify(mp)); | |
413 | } | |
414 | ||
415 | STATIC uint | |
416 | xfs_calc_create_reservation( | |
417 | struct xfs_mount *mp) | |
418 | { | |
419 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
420 | return xfs_calc_icreate_reservation(mp); | |
421 | return __xfs_calc_create_reservation(mp); | |
422 | ||
423 | } | |
424 | ||
99b6436b ZYW |
425 | STATIC uint |
426 | xfs_calc_create_tmpfile_reservation( | |
427 | struct xfs_mount *mp) | |
428 | { | |
429 | uint res = XFS_DQUOT_LOGRES(mp); | |
430 | ||
431 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
432 | res += xfs_calc_icreate_resv_alloc(mp); | |
433 | else | |
434 | res += xfs_calc_create_resv_alloc(mp); | |
435 | ||
436 | return res + xfs_calc_iunlink_add_reservation(mp); | |
437 | } | |
438 | ||
7fd36c44 DC |
439 | /* |
440 | * Making a new directory is the same as creating a new file. | |
441 | */ | |
442 | STATIC uint | |
443 | xfs_calc_mkdir_reservation( | |
444 | struct xfs_mount *mp) | |
445 | { | |
446 | return xfs_calc_create_reservation(mp); | |
447 | } | |
448 | ||
449 | ||
450 | /* | |
451 | * Making a new symplink is the same as creating a new file, but | |
452 | * with the added blocks for remote symlink data which can be up to 1kB in | |
453 | * length (MAXPATHLEN). | |
454 | */ | |
455 | STATIC uint | |
456 | xfs_calc_symlink_reservation( | |
457 | struct xfs_mount *mp) | |
458 | { | |
459 | return xfs_calc_create_reservation(mp) + | |
460 | xfs_calc_buf_res(1, MAXPATHLEN); | |
461 | } | |
462 | ||
463 | /* | |
464 | * In freeing an inode we can modify: | |
465 | * the inode being freed: inode size | |
466 | * the super block free inode counter: sector size | |
467 | * the agi hash list and counters: sector size | |
468 | * the inode btree entry: block size | |
469 | * the on disk inode before ours in the agi hash list: inode cluster size | |
470 | * the inode btree: max depth * blocksize | |
471 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
9d43b180 | 472 | * the finobt (record insertion, removal or modification) |
7fd36c44 DC |
473 | */ |
474 | STATIC uint | |
475 | xfs_calc_ifree_reservation( | |
476 | struct xfs_mount *mp) | |
477 | { | |
478 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 479 | xfs_calc_inode_res(mp, 1) + |
ab297431 | 480 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
7fd36c44 | 481 | xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + |
ab297431 | 482 | xfs_calc_iunlink_remove_reservation(mp) + |
7fd36c44 | 483 | xfs_calc_buf_res(1, 0) + |
126cd105 | 484 | xfs_calc_buf_res(2 + mp->m_ialloc_blks + |
7fd36c44 DC |
485 | mp->m_in_maxlevels, 0) + |
486 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
9d43b180 BF |
487 | XFS_FSB_TO_B(mp, 1)) + |
488 | xfs_calc_finobt_res(mp, 0, 1); | |
7fd36c44 DC |
489 | } |
490 | ||
491 | /* | |
492 | * When only changing the inode we log the inode and possibly the superblock | |
493 | * We also add a bit of slop for the transaction stuff. | |
494 | */ | |
495 | STATIC uint | |
496 | xfs_calc_ichange_reservation( | |
497 | struct xfs_mount *mp) | |
498 | { | |
499 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 DC |
500 | xfs_calc_inode_res(mp, 1) + |
501 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
7fd36c44 DC |
502 | |
503 | } | |
504 | ||
505 | /* | |
506 | * Growing the data section of the filesystem. | |
507 | * superblock | |
508 | * agi and agf | |
509 | * allocation btrees | |
510 | */ | |
511 | STATIC uint | |
512 | xfs_calc_growdata_reservation( | |
513 | struct xfs_mount *mp) | |
514 | { | |
515 | return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
516 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
517 | XFS_FSB_TO_B(mp, 1)); | |
518 | } | |
519 | ||
520 | /* | |
521 | * Growing the rt section of the filesystem. | |
522 | * In the first set of transactions (ALLOC) we allocate space to the | |
523 | * bitmap or summary files. | |
524 | * superblock: sector size | |
525 | * agf of the ag from which the extent is allocated: sector size | |
526 | * bmap btree for bitmap/summary inode: max depth * blocksize | |
527 | * bitmap/summary inode: inode size | |
528 | * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize | |
529 | */ | |
530 | STATIC uint | |
531 | xfs_calc_growrtalloc_reservation( | |
532 | struct xfs_mount *mp) | |
533 | { | |
534 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
535 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), | |
536 | XFS_FSB_TO_B(mp, 1)) + | |
23956703 | 537 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
538 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), |
539 | XFS_FSB_TO_B(mp, 1)); | |
540 | } | |
541 | ||
542 | /* | |
543 | * Growing the rt section of the filesystem. | |
544 | * In the second set of transactions (ZERO) we zero the new metadata blocks. | |
545 | * one bitmap/summary block: blocksize | |
546 | */ | |
547 | STATIC uint | |
548 | xfs_calc_growrtzero_reservation( | |
549 | struct xfs_mount *mp) | |
550 | { | |
551 | return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize); | |
552 | } | |
553 | ||
554 | /* | |
555 | * Growing the rt section of the filesystem. | |
556 | * In the third set of transactions (FREE) we update metadata without | |
557 | * allocating any new blocks. | |
558 | * superblock: sector size | |
559 | * bitmap inode: inode size | |
560 | * summary inode: inode size | |
561 | * one bitmap block: blocksize | |
562 | * summary blocks: new summary size | |
563 | */ | |
564 | STATIC uint | |
565 | xfs_calc_growrtfree_reservation( | |
566 | struct xfs_mount *mp) | |
567 | { | |
568 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
23956703 | 569 | xfs_calc_inode_res(mp, 2) + |
7fd36c44 DC |
570 | xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) + |
571 | xfs_calc_buf_res(1, mp->m_rsumsize); | |
572 | } | |
573 | ||
574 | /* | |
575 | * Logging the inode modification timestamp on a synchronous write. | |
576 | * inode | |
577 | */ | |
578 | STATIC uint | |
579 | xfs_calc_swrite_reservation( | |
580 | struct xfs_mount *mp) | |
581 | { | |
23956703 | 582 | return xfs_calc_inode_res(mp, 1); |
7fd36c44 DC |
583 | } |
584 | ||
585 | /* | |
586 | * Logging the inode mode bits when writing a setuid/setgid file | |
587 | * inode | |
588 | */ | |
589 | STATIC uint | |
23956703 DC |
590 | xfs_calc_writeid_reservation( |
591 | struct xfs_mount *mp) | |
7fd36c44 | 592 | { |
23956703 | 593 | return xfs_calc_inode_res(mp, 1); |
7fd36c44 DC |
594 | } |
595 | ||
596 | /* | |
597 | * Converting the inode from non-attributed to attributed. | |
598 | * the inode being converted: inode size | |
599 | * agf block and superblock (for block allocation) | |
600 | * the new block (directory sized) | |
601 | * bmap blocks for the new directory block | |
602 | * allocation btrees | |
603 | */ | |
604 | STATIC uint | |
605 | xfs_calc_addafork_reservation( | |
606 | struct xfs_mount *mp) | |
607 | { | |
608 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 609 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 | 610 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + |
8f66193c | 611 | xfs_calc_buf_res(1, mp->m_dir_geo->blksize) + |
7fd36c44 DC |
612 | xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, |
613 | XFS_FSB_TO_B(mp, 1)) + | |
614 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
615 | XFS_FSB_TO_B(mp, 1)); | |
616 | } | |
617 | ||
618 | /* | |
619 | * Removing the attribute fork of a file | |
620 | * the inode being truncated: inode size | |
621 | * the inode's bmap btree: max depth * block size | |
622 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
623 | * the agf for each of the ags: 4 * sector size | |
624 | * the agfl for each of the ags: 4 * sector size | |
625 | * the super block to reflect the freed blocks: sector size | |
626 | * worst case split in allocation btrees per extent assuming 4 extents: | |
627 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
628 | */ | |
629 | STATIC uint | |
630 | xfs_calc_attrinval_reservation( | |
631 | struct xfs_mount *mp) | |
632 | { | |
23956703 | 633 | return MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
634 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), |
635 | XFS_FSB_TO_B(mp, 1))), | |
636 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
637 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
638 | XFS_FSB_TO_B(mp, 1)))); | |
639 | } | |
640 | ||
641 | /* | |
642 | * Setting an attribute at mount time. | |
643 | * the inode getting the attribute | |
644 | * the superblock for allocations | |
645 | * the agfs extents are allocated from | |
646 | * the attribute btree * max depth | |
647 | * the inode allocation btree | |
648 | * Since attribute transaction space is dependent on the size of the attribute, | |
649 | * the calculation is done partially at mount time and partially at runtime(see | |
650 | * below). | |
651 | */ | |
652 | STATIC uint | |
653 | xfs_calc_attrsetm_reservation( | |
654 | struct xfs_mount *mp) | |
655 | { | |
656 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 657 | xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
658 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
659 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1)); | |
660 | } | |
661 | ||
662 | /* | |
663 | * Setting an attribute at runtime, transaction space unit per block. | |
664 | * the superblock for allocations: sector size | |
665 | * the inode bmap btree could join or split: max depth * block size | |
666 | * Since the runtime attribute transaction space is dependent on the total | |
667 | * blocks needed for the 1st bmap, here we calculate out the space unit for | |
668 | * one block so that the caller could figure out the total space according | |
3d3c8b52 JL |
669 | * to the attibute extent length in blocks by: |
670 | * ext * M_RES(mp)->tr_attrsetrt.tr_logres | |
7fd36c44 DC |
671 | */ |
672 | STATIC uint | |
673 | xfs_calc_attrsetrt_reservation( | |
674 | struct xfs_mount *mp) | |
675 | { | |
676 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
677 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), | |
678 | XFS_FSB_TO_B(mp, 1)); | |
679 | } | |
680 | ||
681 | /* | |
682 | * Removing an attribute. | |
683 | * the inode: inode size | |
684 | * the attribute btree could join: max depth * block size | |
685 | * the inode bmap btree could join or split: max depth * block size | |
686 | * And the bmap_finish transaction can free the attr blocks freed giving: | |
687 | * the agf for the ag in which the blocks live: 2 * sector size | |
688 | * the agfl for the ag in which the blocks live: 2 * sector size | |
689 | * the superblock for the free block count: sector size | |
690 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
691 | */ | |
692 | STATIC uint | |
693 | xfs_calc_attrrm_reservation( | |
694 | struct xfs_mount *mp) | |
695 | { | |
696 | return XFS_DQUOT_LOGRES(mp) + | |
23956703 | 697 | MAX((xfs_calc_inode_res(mp, 1) + |
7fd36c44 DC |
698 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, |
699 | XFS_FSB_TO_B(mp, 1)) + | |
700 | (uint)XFS_FSB_TO_B(mp, | |
701 | XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + | |
702 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), | |
703 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
704 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
705 | XFS_FSB_TO_B(mp, 1)))); | |
706 | } | |
707 | ||
708 | /* | |
709 | * Clearing a bad agino number in an agi hash bucket. | |
710 | */ | |
711 | STATIC uint | |
712 | xfs_calc_clear_agi_bucket_reservation( | |
713 | struct xfs_mount *mp) | |
714 | { | |
715 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
716 | } | |
717 | ||
7fd36c44 DC |
718 | /* |
719 | * Adjusting quota limits. | |
720 | * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) | |
721 | */ | |
722 | STATIC uint | |
723 | xfs_calc_qm_setqlim_reservation( | |
724 | struct xfs_mount *mp) | |
725 | { | |
726 | return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot)); | |
727 | } | |
728 | ||
729 | /* | |
730 | * Allocating quota on disk if needed. | |
410b11a6 | 731 | * the write transaction log space for quota file extent allocation |
7fd36c44 DC |
732 | * the unit of quota allocation: one system block size |
733 | */ | |
734 | STATIC uint | |
735 | xfs_calc_qm_dqalloc_reservation( | |
736 | struct xfs_mount *mp) | |
737 | { | |
410b11a6 | 738 | return xfs_calc_write_reservation(mp) + |
7fd36c44 DC |
739 | xfs_calc_buf_res(1, |
740 | XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1); | |
741 | } | |
742 | ||
743 | /* | |
744 | * Turning off quotas. | |
745 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
746 | * the superblock for the quota flags: sector size | |
747 | */ | |
748 | STATIC uint | |
749 | xfs_calc_qm_quotaoff_reservation( | |
750 | struct xfs_mount *mp) | |
751 | { | |
752 | return sizeof(struct xfs_qoff_logitem) * 2 + | |
753 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
754 | } | |
755 | ||
756 | /* | |
757 | * End of turning off quotas. | |
758 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
759 | */ | |
760 | STATIC uint | |
761 | xfs_calc_qm_quotaoff_end_reservation( | |
762 | struct xfs_mount *mp) | |
763 | { | |
764 | return sizeof(struct xfs_qoff_logitem) * 2; | |
765 | } | |
766 | ||
767 | /* | |
768 | * Syncing the incore super block changes to disk. | |
769 | * the super block to reflect the changes: sector size | |
770 | */ | |
771 | STATIC uint | |
772 | xfs_calc_sb_reservation( | |
773 | struct xfs_mount *mp) | |
774 | { | |
775 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
776 | } | |
777 | ||
778 | void | |
779 | xfs_trans_resv_calc( | |
780 | struct xfs_mount *mp, | |
781 | struct xfs_trans_resv *resp) | |
782 | { | |
0eadd102 JL |
783 | /* |
784 | * The following transactions are logged in physical format and | |
785 | * require a permanent reservation on space. | |
786 | */ | |
787 | resp->tr_write.tr_logres = xfs_calc_write_reservation(mp); | |
788 | resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT; | |
789 | resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
790 | ||
791 | resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp); | |
792 | resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT; | |
793 | resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
794 | ||
795 | resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp); | |
796 | resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT; | |
797 | resp->tr_rename.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
798 | ||
799 | resp->tr_link.tr_logres = xfs_calc_link_reservation(mp); | |
800 | resp->tr_link.tr_logcount = XFS_LINK_LOG_COUNT; | |
801 | resp->tr_link.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
802 | ||
803 | resp->tr_remove.tr_logres = xfs_calc_remove_reservation(mp); | |
804 | resp->tr_remove.tr_logcount = XFS_REMOVE_LOG_COUNT; | |
805 | resp->tr_remove.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
806 | ||
807 | resp->tr_symlink.tr_logres = xfs_calc_symlink_reservation(mp); | |
808 | resp->tr_symlink.tr_logcount = XFS_SYMLINK_LOG_COUNT; | |
809 | resp->tr_symlink.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
810 | ||
811 | resp->tr_create.tr_logres = xfs_calc_create_reservation(mp); | |
812 | resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT; | |
813 | resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
814 | ||
99b6436b ZYW |
815 | resp->tr_create_tmpfile.tr_logres = |
816 | xfs_calc_create_tmpfile_reservation(mp); | |
817 | resp->tr_create_tmpfile.tr_logcount = XFS_CREATE_TMPFILE_LOG_COUNT; | |
818 | resp->tr_create_tmpfile.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
819 | ||
0eadd102 JL |
820 | resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); |
821 | resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; | |
822 | resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
823 | ||
824 | resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp); | |
825 | resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT; | |
826 | resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
827 | ||
828 | resp->tr_addafork.tr_logres = xfs_calc_addafork_reservation(mp); | |
829 | resp->tr_addafork.tr_logcount = XFS_ADDAFORK_LOG_COUNT; | |
830 | resp->tr_addafork.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
831 | ||
832 | resp->tr_attrinval.tr_logres = xfs_calc_attrinval_reservation(mp); | |
833 | resp->tr_attrinval.tr_logcount = XFS_ATTRINVAL_LOG_COUNT; | |
834 | resp->tr_attrinval.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
835 | ||
836 | resp->tr_attrsetm.tr_logres = xfs_calc_attrsetm_reservation(mp); | |
837 | resp->tr_attrsetm.tr_logcount = XFS_ATTRSET_LOG_COUNT; | |
838 | resp->tr_attrsetm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
839 | ||
840 | resp->tr_attrrm.tr_logres = xfs_calc_attrrm_reservation(mp); | |
841 | resp->tr_attrrm.tr_logcount = XFS_ATTRRM_LOG_COUNT; | |
842 | resp->tr_attrrm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
843 | ||
844 | resp->tr_growrtalloc.tr_logres = xfs_calc_growrtalloc_reservation(mp); | |
845 | resp->tr_growrtalloc.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT; | |
846 | resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
847 | ||
848 | resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp); | |
849 | resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT; | |
850 | resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
851 | ||
852 | /* | |
853 | * The following transactions are logged in logical format with | |
854 | * a default log count. | |
855 | */ | |
0eadd102 JL |
856 | resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp); |
857 | resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
858 | ||
859 | resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp); | |
860 | resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
861 | ||
862 | resp->tr_qm_equotaoff.tr_logres = | |
863 | xfs_calc_qm_quotaoff_end_reservation(mp); | |
864 | resp->tr_qm_equotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
865 | ||
866 | resp->tr_sb.tr_logres = xfs_calc_sb_reservation(mp); | |
867 | resp->tr_sb.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
868 | ||
869 | /* The following transaction are logged in logical format */ | |
870 | resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp); | |
871 | resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp); | |
20996c93 | 872 | resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp); |
0eadd102 JL |
873 | resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp); |
874 | resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp); | |
875 | resp->tr_clearagi.tr_logres = xfs_calc_clear_agi_bucket_reservation(mp); | |
876 | resp->tr_growrtzero.tr_logres = xfs_calc_growrtzero_reservation(mp); | |
877 | resp->tr_growrtfree.tr_logres = xfs_calc_growrtfree_reservation(mp); | |
7fd36c44 | 878 | } |