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364e85ec 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 | */ | |
9c799827 | 19 | #include "libxfs_priv.h" |
b626fb59 DC |
20 | #include "xfs_fs.h" |
21 | #include "xfs_shared.h" | |
22 | #include "xfs_format.h" | |
23 | #include "xfs_log_format.h" | |
24 | #include "xfs_trans_resv.h" | |
25 | #include "xfs_mount.h" | |
26 | #include "xfs_da_format.h" | |
27 | #include "xfs_da_btree.h" | |
28 | #include "xfs_inode.h" | |
29 | #include "xfs_bmap_btree.h" | |
30 | #include "xfs_ialloc.h" | |
31 | #include "xfs_trans.h" | |
32 | #include "xfs_trans_space.h" | |
33 | #include "xfs_trace.h" | |
34 | #include "xfs_quota_defs.h" | |
364e85ec DC |
35 | |
36 | /* | |
37 | * A buffer has a format structure overhead in the log in addition | |
38 | * to the data, so we need to take this into account when reserving | |
39 | * space in a transaction for a buffer. Round the space required up | |
40 | * to a multiple of 128 bytes so that we don't change the historical | |
41 | * reservation that has been used for this overhead. | |
42 | */ | |
43 | STATIC uint | |
44 | xfs_buf_log_overhead(void) | |
45 | { | |
46 | return round_up(sizeof(struct xlog_op_header) + | |
47 | sizeof(struct xfs_buf_log_format), 128); | |
48 | } | |
49 | ||
50 | /* | |
51 | * Calculate out transaction log reservation per item in bytes. | |
52 | * | |
53 | * The nbufs argument is used to indicate the number of items that | |
54 | * will be changed in a transaction. size is used to tell how many | |
55 | * bytes should be reserved per item. | |
56 | */ | |
57 | STATIC uint | |
58 | xfs_calc_buf_res( | |
59 | uint nbufs, | |
60 | uint size) | |
61 | { | |
62 | return nbufs * (size + xfs_buf_log_overhead()); | |
63 | } | |
64 | ||
e4ce00ba DW |
65 | /* |
66 | * Per-extent log reservation for the btree changes involved in freeing or | |
67 | * allocating an extent. In classic XFS there were two trees that will be | |
68 | * modified (bnobt + cntbt). With rmap enabled, there are three trees | |
dfa69e0a DW |
69 | * (rmapbt). With reflink, there are four trees (refcountbt). The number of |
70 | * blocks reserved is based on the formula: | |
e4ce00ba DW |
71 | * |
72 | * num trees * ((2 blocks/level * max depth) - 1) | |
73 | * | |
74 | * Keep in mind that max depth is calculated separately for each type of tree. | |
75 | */ | |
d8079fe0 | 76 | uint |
e4ce00ba DW |
77 | xfs_allocfree_log_count( |
78 | struct xfs_mount *mp, | |
79 | uint num_ops) | |
80 | { | |
81 | uint blocks; | |
82 | ||
83 | blocks = num_ops * 2 * (2 * mp->m_ag_maxlevels - 1); | |
84 | if (xfs_sb_version_hasrmapbt(&mp->m_sb)) | |
85 | blocks += num_ops * (2 * mp->m_rmap_maxlevels - 1); | |
dfa69e0a DW |
86 | if (xfs_sb_version_hasreflink(&mp->m_sb)) |
87 | blocks += num_ops * (2 * mp->m_refc_maxlevels - 1); | |
e4ce00ba DW |
88 | |
89 | return blocks; | |
90 | } | |
91 | ||
546abaa4 DC |
92 | /* |
93 | * Logging inodes is really tricksy. They are logged in memory format, | |
e6d77a21 | 94 | * which means that what we write into the log doesn't directly translate into |
546abaa4 DC |
95 | * the amount of space they use on disk. |
96 | * | |
97 | * Case in point - btree format forks in memory format use more space than the | |
98 | * on-disk format. In memory, the buffer contains a normal btree block header so | |
99 | * the btree code can treat it as though it is just another generic buffer. | |
100 | * However, when we write it to the inode fork, we don't write all of this | |
101 | * header as it isn't needed. e.g. the root is only ever in the inode, so | |
102 | * there's no need for sibling pointers which would waste 16 bytes of space. | |
103 | * | |
104 | * Hence when we have an inode with a maximally sized btree format fork, then | |
105 | * amount of information we actually log is greater than the size of the inode | |
106 | * on disk. Hence we need an inode reservation function that calculates all this | |
107 | * correctly. So, we log: | |
108 | * | |
ff105f75 DC |
109 | * - 4 log op headers for object |
110 | * - for the ilf, the inode core and 2 forks | |
546abaa4 | 111 | * - inode log format object |
ff105f75 DC |
112 | * - the inode core |
113 | * - two inode forks containing bmap btree root blocks. | |
114 | * - the btree data contained by both forks will fit into the inode size, | |
115 | * hence when combined with the inode core above, we have a total of the | |
116 | * actual inode size. | |
117 | * - the BMBT headers need to be accounted separately, as they are | |
118 | * additional to the records and pointers that fit inside the inode | |
119 | * forks. | |
546abaa4 DC |
120 | */ |
121 | STATIC uint | |
122 | xfs_calc_inode_res( | |
123 | struct xfs_mount *mp, | |
124 | uint ninodes) | |
125 | { | |
ff105f75 DC |
126 | return ninodes * |
127 | (4 * sizeof(struct xlog_op_header) + | |
128 | sizeof(struct xfs_inode_log_format) + | |
129 | mp->m_sb.sb_inodesize + | |
130 | 2 * XFS_BMBT_BLOCK_LEN(mp)); | |
546abaa4 DC |
131 | } |
132 | ||
0f88d64a BF |
133 | /* |
134 | * The free inode btree is a conditional feature and the log reservation | |
135 | * requirements differ slightly from that of the traditional inode allocation | |
ff105f75 DC |
136 | * btree. The finobt tracks records for inode chunks with at least one free |
137 | * inode. A record can be removed from the tree for an inode allocation | |
138 | * or free and thus the finobt reservation is unconditional across: | |
139 | * | |
140 | * - inode allocation | |
141 | * - inode free | |
142 | * - inode chunk allocation | |
143 | * | |
144 | * The 'modify' param indicates to include the record modification scenario. The | |
145 | * 'alloc' param indicates to include the reservation for free space btree | |
146 | * modifications on behalf of finobt modifications. This is required only for | |
147 | * transactions that do not already account for free space btree modifications. | |
0f88d64a BF |
148 | * |
149 | * the free inode btree: max depth * block size | |
ff105f75 | 150 | * the allocation btrees: 2 trees * (max depth - 1) * block size |
0f88d64a | 151 | * the free inode btree entry: block size |
0f88d64a BF |
152 | */ |
153 | STATIC uint | |
154 | xfs_calc_finobt_res( | |
e4ce00ba | 155 | struct xfs_mount *mp, |
ff105f75 | 156 | int alloc, |
0f88d64a BF |
157 | int modify) |
158 | { | |
159 | uint res; | |
160 | ||
161 | if (!xfs_sb_version_hasfinobt(&mp->m_sb)) | |
162 | return 0; | |
163 | ||
164 | res = xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)); | |
ff105f75 | 165 | if (alloc) |
e4ce00ba | 166 | res += xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), |
ff105f75 | 167 | XFS_FSB_TO_B(mp, 1)); |
0f88d64a BF |
168 | if (modify) |
169 | res += (uint)XFS_FSB_TO_B(mp, 1); | |
170 | ||
171 | return res; | |
172 | } | |
173 | ||
364e85ec DC |
174 | /* |
175 | * Various log reservation values. | |
176 | * | |
177 | * These are based on the size of the file system block because that is what | |
178 | * most transactions manipulate. Each adds in an additional 128 bytes per | |
179 | * item logged to try to account for the overhead of the transaction mechanism. | |
180 | * | |
181 | * Note: Most of the reservations underestimate the number of allocation | |
6f530e9a | 182 | * groups into which they could free extents in the xfs_defer_finish() call. |
364e85ec | 183 | * This is because the number in the worst case is quite high and quite |
6f530e9a | 184 | * unusual. In order to fix this we need to change xfs_defer_finish() to free |
364e85ec DC |
185 | * extents in only a single AG at a time. This will require changes to the |
186 | * EFI code as well, however, so that the EFI for the extents not freed is | |
187 | * logged again in each transaction. See SGI PV #261917. | |
188 | * | |
189 | * Reservation functions here avoid a huge stack in xfs_trans_init due to | |
190 | * register overflow from temporaries in the calculations. | |
191 | */ | |
192 | ||
193 | ||
194 | /* | |
195 | * In a write transaction we can allocate a maximum of 2 | |
196 | * extents. This gives: | |
197 | * the inode getting the new extents: inode size | |
198 | * the inode's bmap btree: max depth * block size | |
199 | * the agfs of the ags from which the extents are allocated: 2 * sector | |
200 | * the superblock free block counter: sector size | |
201 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
202 | * And the bmap_finish transaction can free bmap blocks in a join: | |
203 | * the agfs of the ags containing the blocks: 2 * sector size | |
204 | * the agfls of the ags containing the blocks: 2 * sector size | |
205 | * the super block free block counter: sector size | |
206 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
207 | */ | |
208 | STATIC uint | |
209 | xfs_calc_write_reservation( | |
210 | struct xfs_mount *mp) | |
211 | { | |
212 | return XFS_DQUOT_LOGRES(mp) + | |
546abaa4 | 213 | MAX((xfs_calc_inode_res(mp, 1) + |
364e85ec DC |
214 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), |
215 | XFS_FSB_TO_B(mp, 1)) + | |
216 | xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
e4ce00ba | 217 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2), |
364e85ec DC |
218 | XFS_FSB_TO_B(mp, 1))), |
219 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
e4ce00ba | 220 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2), |
364e85ec DC |
221 | XFS_FSB_TO_B(mp, 1)))); |
222 | } | |
223 | ||
224 | /* | |
225 | * In truncating a file we free up to two extents at once. We can modify: | |
226 | * the inode being truncated: inode size | |
227 | * the inode's bmap btree: (max depth + 1) * block size | |
228 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
229 | * the agf for each of the ags: 4 * sector size | |
230 | * the agfl for each of the ags: 4 * sector size | |
231 | * the super block to reflect the freed blocks: sector size | |
232 | * worst case split in allocation btrees per extent assuming 4 extents: | |
233 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
364e85ec DC |
234 | */ |
235 | STATIC uint | |
236 | xfs_calc_itruncate_reservation( | |
237 | struct xfs_mount *mp) | |
238 | { | |
239 | return XFS_DQUOT_LOGRES(mp) + | |
546abaa4 | 240 | MAX((xfs_calc_inode_res(mp, 1) + |
364e85ec DC |
241 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, |
242 | XFS_FSB_TO_B(mp, 1))), | |
243 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
e4ce00ba | 244 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 4), |
ec1b0fd9 | 245 | XFS_FSB_TO_B(mp, 1)))); |
364e85ec DC |
246 | } |
247 | ||
248 | /* | |
249 | * In renaming a files we can modify: | |
250 | * the four inodes involved: 4 * inode size | |
251 | * the two directory btrees: 2 * (max depth + v2) * dir block size | |
252 | * the two directory bmap btrees: 2 * max depth * block size | |
253 | * And the bmap_finish transaction can free dir and bmap blocks (two sets | |
254 | * of bmap blocks) giving: | |
255 | * the agf for the ags in which the blocks live: 3 * sector size | |
256 | * the agfl for the ags in which the blocks live: 3 * sector size | |
257 | * the superblock for the free block count: sector size | |
258 | * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size | |
259 | */ | |
260 | STATIC uint | |
261 | xfs_calc_rename_reservation( | |
262 | struct xfs_mount *mp) | |
263 | { | |
264 | return XFS_DQUOT_LOGRES(mp) + | |
546abaa4 | 265 | MAX((xfs_calc_inode_res(mp, 4) + |
364e85ec DC |
266 | xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), |
267 | XFS_FSB_TO_B(mp, 1))), | |
268 | (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + | |
e4ce00ba | 269 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 3), |
364e85ec DC |
270 | XFS_FSB_TO_B(mp, 1)))); |
271 | } | |
272 | ||
ff105f75 DC |
273 | /* |
274 | * For removing an inode from unlinked list at first, we can modify: | |
275 | * the agi hash list and counters: sector size | |
276 | * the on disk inode before ours in the agi hash list: inode cluster size | |
727b445b | 277 | * the on disk inode in the agi hash list: inode cluster size |
ff105f75 DC |
278 | */ |
279 | STATIC uint | |
280 | xfs_calc_iunlink_remove_reservation( | |
281 | struct xfs_mount *mp) | |
282 | { | |
283 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
727b445b | 284 | 2 * max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size); |
ff105f75 DC |
285 | } |
286 | ||
364e85ec DC |
287 | /* |
288 | * For creating a link to an inode: | |
289 | * the parent directory inode: inode size | |
290 | * the linked inode: inode size | |
291 | * the directory btree could split: (max depth + v2) * dir block size | |
292 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
293 | * And the bmap_finish transaction can free some bmap blocks giving: | |
294 | * the agf for the ag in which the blocks live: sector size | |
295 | * the agfl for the ag in which the blocks live: sector size | |
296 | * the superblock for the free block count: sector size | |
297 | * the allocation btrees: 2 trees * (2 * max depth - 1) * block size | |
298 | */ | |
299 | STATIC uint | |
300 | xfs_calc_link_reservation( | |
301 | struct xfs_mount *mp) | |
302 | { | |
303 | return XFS_DQUOT_LOGRES(mp) + | |
ff105f75 | 304 | xfs_calc_iunlink_remove_reservation(mp) + |
546abaa4 | 305 | MAX((xfs_calc_inode_res(mp, 2) + |
364e85ec DC |
306 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
307 | XFS_FSB_TO_B(mp, 1))), | |
308 | (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
e4ce00ba | 309 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), |
364e85ec DC |
310 | XFS_FSB_TO_B(mp, 1)))); |
311 | } | |
312 | ||
ff105f75 DC |
313 | /* |
314 | * For adding an inode to unlinked list we can modify: | |
315 | * the agi hash list: sector size | |
727b445b | 316 | * the on disk inode: inode cluster size |
ff105f75 DC |
317 | */ |
318 | STATIC uint | |
319 | xfs_calc_iunlink_add_reservation(xfs_mount_t *mp) | |
320 | { | |
321 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
727b445b | 322 | max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size); |
ff105f75 DC |
323 | } |
324 | ||
364e85ec DC |
325 | /* |
326 | * For removing a directory entry we can modify: | |
327 | * the parent directory inode: inode size | |
328 | * the removed inode: inode size | |
329 | * the directory btree could join: (max depth + v2) * dir block size | |
330 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
331 | * And the bmap_finish transaction can free the dir and bmap blocks giving: | |
332 | * the agf for the ag in which the blocks live: 2 * sector size | |
333 | * the agfl for the ag in which the blocks live: 2 * sector size | |
334 | * the superblock for the free block count: sector size | |
335 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
336 | */ | |
337 | STATIC uint | |
338 | xfs_calc_remove_reservation( | |
339 | struct xfs_mount *mp) | |
340 | { | |
341 | return XFS_DQUOT_LOGRES(mp) + | |
ff105f75 DC |
342 | xfs_calc_iunlink_add_reservation(mp) + |
343 | MAX((xfs_calc_inode_res(mp, 1) + | |
364e85ec DC |
344 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), |
345 | XFS_FSB_TO_B(mp, 1))), | |
ff105f75 | 346 | (xfs_calc_buf_res(4, mp->m_sb.sb_sectsize) + |
e4ce00ba | 347 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2), |
364e85ec DC |
348 | XFS_FSB_TO_B(mp, 1)))); |
349 | } | |
350 | ||
351 | /* | |
352 | * For create, break it in to the two cases that the transaction | |
353 | * covers. We start with the modify case - allocation done by modification | |
354 | * of the state of existing inodes - and the allocation case. | |
355 | */ | |
356 | ||
357 | /* | |
358 | * For create we can modify: | |
359 | * the parent directory inode: inode size | |
360 | * the new inode: inode size | |
361 | * the inode btree entry: block size | |
362 | * the superblock for the nlink flag: sector size | |
363 | * the directory btree: (max depth + v2) * dir block size | |
364 | * the directory inode's bmap btree: (max depth + v2) * block size | |
ff105f75 | 365 | * the finobt (record modification and allocation btrees) |
364e85ec DC |
366 | */ |
367 | STATIC uint | |
368 | xfs_calc_create_resv_modify( | |
369 | struct xfs_mount *mp) | |
370 | { | |
546abaa4 | 371 | return xfs_calc_inode_res(mp, 2) + |
364e85ec DC |
372 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
373 | (uint)XFS_FSB_TO_B(mp, 1) + | |
0f88d64a | 374 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1)) + |
ff105f75 | 375 | xfs_calc_finobt_res(mp, 1, 1); |
364e85ec DC |
376 | } |
377 | ||
378 | /* | |
379 | * For create we can allocate some inodes giving: | |
380 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
381 | * the superblock for the nlink flag: sector size | |
ff105f75 | 382 | * the inode blocks allocated: mp->m_ialloc_blks * blocksize |
364e85ec DC |
383 | * the inode btree: max depth * blocksize |
384 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
385 | */ | |
386 | STATIC uint | |
387 | xfs_calc_create_resv_alloc( | |
388 | struct xfs_mount *mp) | |
389 | { | |
390 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
391 | mp->m_sb.sb_sectsize + | |
ff105f75 | 392 | xfs_calc_buf_res(mp->m_ialloc_blks, XFS_FSB_TO_B(mp, 1)) + |
364e85ec | 393 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + |
e4ce00ba | 394 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), |
ff105f75 | 395 | XFS_FSB_TO_B(mp, 1)); |
364e85ec DC |
396 | } |
397 | ||
398 | STATIC uint | |
399 | __xfs_calc_create_reservation( | |
400 | struct xfs_mount *mp) | |
401 | { | |
402 | return XFS_DQUOT_LOGRES(mp) + | |
403 | MAX(xfs_calc_create_resv_alloc(mp), | |
404 | xfs_calc_create_resv_modify(mp)); | |
405 | } | |
406 | ||
407 | /* | |
408 | * For icreate we can allocate some inodes giving: | |
409 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
410 | * the superblock for the nlink flag: sector size | |
411 | * the inode btree: max depth * blocksize | |
412 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
ff105f75 | 413 | * the finobt (record insertion) |
364e85ec DC |
414 | */ |
415 | STATIC uint | |
416 | xfs_calc_icreate_resv_alloc( | |
417 | struct xfs_mount *mp) | |
418 | { | |
419 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
420 | mp->m_sb.sb_sectsize + | |
421 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + | |
e4ce00ba | 422 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), |
0f88d64a | 423 | XFS_FSB_TO_B(mp, 1)) + |
ff105f75 | 424 | xfs_calc_finobt_res(mp, 0, 0); |
364e85ec DC |
425 | } |
426 | ||
427 | STATIC uint | |
428 | xfs_calc_icreate_reservation(xfs_mount_t *mp) | |
429 | { | |
430 | return XFS_DQUOT_LOGRES(mp) + | |
431 | MAX(xfs_calc_icreate_resv_alloc(mp), | |
432 | xfs_calc_create_resv_modify(mp)); | |
433 | } | |
434 | ||
435 | STATIC uint | |
436 | xfs_calc_create_reservation( | |
437 | struct xfs_mount *mp) | |
438 | { | |
439 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
440 | return xfs_calc_icreate_reservation(mp); | |
441 | return __xfs_calc_create_reservation(mp); | |
442 | ||
443 | } | |
444 | ||
ff105f75 DC |
445 | STATIC uint |
446 | xfs_calc_create_tmpfile_reservation( | |
447 | struct xfs_mount *mp) | |
448 | { | |
449 | uint res = XFS_DQUOT_LOGRES(mp); | |
450 | ||
451 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
452 | res += xfs_calc_icreate_resv_alloc(mp); | |
453 | else | |
454 | res += xfs_calc_create_resv_alloc(mp); | |
455 | ||
456 | return res + xfs_calc_iunlink_add_reservation(mp); | |
457 | } | |
458 | ||
364e85ec DC |
459 | /* |
460 | * Making a new directory is the same as creating a new file. | |
461 | */ | |
462 | STATIC uint | |
463 | xfs_calc_mkdir_reservation( | |
464 | struct xfs_mount *mp) | |
465 | { | |
466 | return xfs_calc_create_reservation(mp); | |
467 | } | |
468 | ||
469 | ||
470 | /* | |
471 | * Making a new symplink is the same as creating a new file, but | |
472 | * with the added blocks for remote symlink data which can be up to 1kB in | |
b8fb8c95 | 473 | * length (XFS_SYMLINK_MAXLEN). |
364e85ec DC |
474 | */ |
475 | STATIC uint | |
476 | xfs_calc_symlink_reservation( | |
477 | struct xfs_mount *mp) | |
478 | { | |
479 | return xfs_calc_create_reservation(mp) + | |
b8fb8c95 | 480 | xfs_calc_buf_res(1, XFS_SYMLINK_MAXLEN); |
364e85ec DC |
481 | } |
482 | ||
483 | /* | |
484 | * In freeing an inode we can modify: | |
485 | * the inode being freed: inode size | |
12382cd2 BF |
486 | * the super block free inode counter, AGF and AGFL: sector size |
487 | * the on disk inode (agi unlinked list removal) | |
488 | * the inode chunk is marked stale (headers only) | |
364e85ec DC |
489 | * the inode btree: max depth * blocksize |
490 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
ff105f75 | 491 | * the finobt (record insertion, removal or modification) |
364e85ec DC |
492 | */ |
493 | STATIC uint | |
494 | xfs_calc_ifree_reservation( | |
495 | struct xfs_mount *mp) | |
496 | { | |
497 | return XFS_DQUOT_LOGRES(mp) + | |
546abaa4 | 498 | xfs_calc_inode_res(mp, 1) + |
12382cd2 | 499 | xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + |
ff105f75 | 500 | xfs_calc_iunlink_remove_reservation(mp) + |
12382cd2 BF |
501 | xfs_calc_buf_res(mp->m_ialloc_blks, 0) + |
502 | xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + | |
e4ce00ba | 503 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), |
0f88d64a | 504 | XFS_FSB_TO_B(mp, 1)) + |
ff105f75 | 505 | xfs_calc_finobt_res(mp, 0, 1); |
364e85ec DC |
506 | } |
507 | ||
508 | /* | |
509 | * When only changing the inode we log the inode and possibly the superblock | |
510 | * We also add a bit of slop for the transaction stuff. | |
511 | */ | |
512 | STATIC uint | |
513 | xfs_calc_ichange_reservation( | |
514 | struct xfs_mount *mp) | |
515 | { | |
516 | return XFS_DQUOT_LOGRES(mp) + | |
546abaa4 DC |
517 | xfs_calc_inode_res(mp, 1) + |
518 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
364e85ec DC |
519 | |
520 | } | |
521 | ||
522 | /* | |
523 | * Growing the data section of the filesystem. | |
524 | * superblock | |
525 | * agi and agf | |
526 | * allocation btrees | |
527 | */ | |
528 | STATIC uint | |
529 | xfs_calc_growdata_reservation( | |
530 | struct xfs_mount *mp) | |
531 | { | |
532 | return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
e4ce00ba | 533 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), |
364e85ec DC |
534 | XFS_FSB_TO_B(mp, 1)); |
535 | } | |
536 | ||
537 | /* | |
538 | * Growing the rt section of the filesystem. | |
539 | * In the first set of transactions (ALLOC) we allocate space to the | |
540 | * bitmap or summary files. | |
541 | * superblock: sector size | |
542 | * agf of the ag from which the extent is allocated: sector size | |
543 | * bmap btree for bitmap/summary inode: max depth * blocksize | |
544 | * bitmap/summary inode: inode size | |
545 | * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize | |
546 | */ | |
547 | STATIC uint | |
548 | xfs_calc_growrtalloc_reservation( | |
549 | struct xfs_mount *mp) | |
550 | { | |
551 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
552 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), | |
553 | XFS_FSB_TO_B(mp, 1)) + | |
546abaa4 | 554 | xfs_calc_inode_res(mp, 1) + |
e4ce00ba | 555 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), |
364e85ec DC |
556 | XFS_FSB_TO_B(mp, 1)); |
557 | } | |
558 | ||
559 | /* | |
560 | * Growing the rt section of the filesystem. | |
561 | * In the second set of transactions (ZERO) we zero the new metadata blocks. | |
562 | * one bitmap/summary block: blocksize | |
563 | */ | |
564 | STATIC uint | |
565 | xfs_calc_growrtzero_reservation( | |
566 | struct xfs_mount *mp) | |
567 | { | |
568 | return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize); | |
569 | } | |
570 | ||
571 | /* | |
572 | * Growing the rt section of the filesystem. | |
573 | * In the third set of transactions (FREE) we update metadata without | |
574 | * allocating any new blocks. | |
575 | * superblock: sector size | |
576 | * bitmap inode: inode size | |
577 | * summary inode: inode size | |
578 | * one bitmap block: blocksize | |
579 | * summary blocks: new summary size | |
580 | */ | |
581 | STATIC uint | |
582 | xfs_calc_growrtfree_reservation( | |
583 | struct xfs_mount *mp) | |
584 | { | |
585 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
546abaa4 | 586 | xfs_calc_inode_res(mp, 2) + |
364e85ec DC |
587 | xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) + |
588 | xfs_calc_buf_res(1, mp->m_rsumsize); | |
589 | } | |
590 | ||
591 | /* | |
592 | * Logging the inode modification timestamp on a synchronous write. | |
593 | * inode | |
594 | */ | |
595 | STATIC uint | |
596 | xfs_calc_swrite_reservation( | |
597 | struct xfs_mount *mp) | |
598 | { | |
546abaa4 | 599 | return xfs_calc_inode_res(mp, 1); |
364e85ec DC |
600 | } |
601 | ||
602 | /* | |
603 | * Logging the inode mode bits when writing a setuid/setgid file | |
604 | * inode | |
605 | */ | |
606 | STATIC uint | |
546abaa4 DC |
607 | xfs_calc_writeid_reservation( |
608 | struct xfs_mount *mp) | |
364e85ec | 609 | { |
546abaa4 | 610 | return xfs_calc_inode_res(mp, 1); |
364e85ec DC |
611 | } |
612 | ||
613 | /* | |
614 | * Converting the inode from non-attributed to attributed. | |
615 | * the inode being converted: inode size | |
616 | * agf block and superblock (for block allocation) | |
617 | * the new block (directory sized) | |
618 | * bmap blocks for the new directory block | |
619 | * allocation btrees | |
620 | */ | |
621 | STATIC uint | |
622 | xfs_calc_addafork_reservation( | |
623 | struct xfs_mount *mp) | |
624 | { | |
625 | return XFS_DQUOT_LOGRES(mp) + | |
546abaa4 | 626 | xfs_calc_inode_res(mp, 1) + |
364e85ec | 627 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + |
ff105f75 | 628 | xfs_calc_buf_res(1, mp->m_dir_geo->blksize) + |
364e85ec DC |
629 | xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, |
630 | XFS_FSB_TO_B(mp, 1)) + | |
e4ce00ba | 631 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), |
364e85ec DC |
632 | XFS_FSB_TO_B(mp, 1)); |
633 | } | |
634 | ||
635 | /* | |
636 | * Removing the attribute fork of a file | |
637 | * the inode being truncated: inode size | |
638 | * the inode's bmap btree: max depth * block size | |
639 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
640 | * the agf for each of the ags: 4 * sector size | |
641 | * the agfl for each of the ags: 4 * sector size | |
642 | * the super block to reflect the freed blocks: sector size | |
643 | * worst case split in allocation btrees per extent assuming 4 extents: | |
644 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
645 | */ | |
646 | STATIC uint | |
647 | xfs_calc_attrinval_reservation( | |
648 | struct xfs_mount *mp) | |
649 | { | |
546abaa4 | 650 | return MAX((xfs_calc_inode_res(mp, 1) + |
364e85ec DC |
651 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), |
652 | XFS_FSB_TO_B(mp, 1))), | |
653 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
e4ce00ba | 654 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 4), |
364e85ec DC |
655 | XFS_FSB_TO_B(mp, 1)))); |
656 | } | |
657 | ||
658 | /* | |
659 | * Setting an attribute at mount time. | |
660 | * the inode getting the attribute | |
661 | * the superblock for allocations | |
662 | * the agfs extents are allocated from | |
663 | * the attribute btree * max depth | |
664 | * the inode allocation btree | |
665 | * Since attribute transaction space is dependent on the size of the attribute, | |
666 | * the calculation is done partially at mount time and partially at runtime(see | |
667 | * below). | |
668 | */ | |
669 | STATIC uint | |
670 | xfs_calc_attrsetm_reservation( | |
671 | struct xfs_mount *mp) | |
672 | { | |
673 | return XFS_DQUOT_LOGRES(mp) + | |
546abaa4 | 674 | xfs_calc_inode_res(mp, 1) + |
364e85ec DC |
675 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
676 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1)); | |
677 | } | |
678 | ||
679 | /* | |
680 | * Setting an attribute at runtime, transaction space unit per block. | |
681 | * the superblock for allocations: sector size | |
682 | * the inode bmap btree could join or split: max depth * block size | |
683 | * Since the runtime attribute transaction space is dependent on the total | |
684 | * blocks needed for the 1st bmap, here we calculate out the space unit for | |
685 | * one block so that the caller could figure out the total space according | |
48ea6cb9 DC |
686 | * to the attibute extent length in blocks by: |
687 | * ext * M_RES(mp)->tr_attrsetrt.tr_logres | |
364e85ec DC |
688 | */ |
689 | STATIC uint | |
690 | xfs_calc_attrsetrt_reservation( | |
691 | struct xfs_mount *mp) | |
692 | { | |
693 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
694 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), | |
695 | XFS_FSB_TO_B(mp, 1)); | |
696 | } | |
697 | ||
698 | /* | |
699 | * Removing an attribute. | |
700 | * the inode: inode size | |
701 | * the attribute btree could join: max depth * block size | |
702 | * the inode bmap btree could join or split: max depth * block size | |
703 | * And the bmap_finish transaction can free the attr blocks freed giving: | |
704 | * the agf for the ag in which the blocks live: 2 * sector size | |
705 | * the agfl for the ag in which the blocks live: 2 * sector size | |
706 | * the superblock for the free block count: sector size | |
707 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
708 | */ | |
709 | STATIC uint | |
710 | xfs_calc_attrrm_reservation( | |
711 | struct xfs_mount *mp) | |
712 | { | |
713 | return XFS_DQUOT_LOGRES(mp) + | |
546abaa4 | 714 | MAX((xfs_calc_inode_res(mp, 1) + |
364e85ec DC |
715 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, |
716 | XFS_FSB_TO_B(mp, 1)) + | |
717 | (uint)XFS_FSB_TO_B(mp, | |
718 | XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + | |
719 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), | |
720 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
e4ce00ba | 721 | xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2), |
364e85ec DC |
722 | XFS_FSB_TO_B(mp, 1)))); |
723 | } | |
724 | ||
725 | /* | |
726 | * Clearing a bad agino number in an agi hash bucket. | |
727 | */ | |
728 | STATIC uint | |
729 | xfs_calc_clear_agi_bucket_reservation( | |
730 | struct xfs_mount *mp) | |
731 | { | |
732 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
733 | } | |
734 | ||
364e85ec DC |
735 | /* |
736 | * Adjusting quota limits. | |
737 | * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) | |
738 | */ | |
739 | STATIC uint | |
740 | xfs_calc_qm_setqlim_reservation( | |
741 | struct xfs_mount *mp) | |
742 | { | |
743 | return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot)); | |
744 | } | |
745 | ||
746 | /* | |
747 | * Allocating quota on disk if needed. | |
ff105f75 | 748 | * the write transaction log space for quota file extent allocation |
364e85ec DC |
749 | * the unit of quota allocation: one system block size |
750 | */ | |
751 | STATIC uint | |
752 | xfs_calc_qm_dqalloc_reservation( | |
753 | struct xfs_mount *mp) | |
754 | { | |
ff105f75 | 755 | return xfs_calc_write_reservation(mp) + |
364e85ec DC |
756 | xfs_calc_buf_res(1, |
757 | XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1); | |
758 | } | |
759 | ||
760 | /* | |
761 | * Turning off quotas. | |
762 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
763 | * the superblock for the quota flags: sector size | |
764 | */ | |
765 | STATIC uint | |
766 | xfs_calc_qm_quotaoff_reservation( | |
767 | struct xfs_mount *mp) | |
768 | { | |
769 | return sizeof(struct xfs_qoff_logitem) * 2 + | |
770 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
771 | } | |
772 | ||
773 | /* | |
774 | * End of turning off quotas. | |
775 | * the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2 | |
776 | */ | |
777 | STATIC uint | |
778 | xfs_calc_qm_quotaoff_end_reservation( | |
779 | struct xfs_mount *mp) | |
780 | { | |
781 | return sizeof(struct xfs_qoff_logitem) * 2; | |
782 | } | |
783 | ||
784 | /* | |
785 | * Syncing the incore super block changes to disk. | |
786 | * the super block to reflect the changes: sector size | |
787 | */ | |
788 | STATIC uint | |
789 | xfs_calc_sb_reservation( | |
790 | struct xfs_mount *mp) | |
791 | { | |
792 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
793 | } | |
794 | ||
795 | void | |
796 | xfs_trans_resv_calc( | |
797 | struct xfs_mount *mp, | |
798 | struct xfs_trans_resv *resp) | |
799 | { | |
cf52c730 DC |
800 | /* |
801 | * The following transactions are logged in physical format and | |
802 | * require a permanent reservation on space. | |
803 | */ | |
804 | resp->tr_write.tr_logres = xfs_calc_write_reservation(mp); | |
04398332 DW |
805 | if (xfs_sb_version_hasreflink(&mp->m_sb)) |
806 | resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT_REFLINK; | |
807 | else | |
808 | resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT; | |
cf52c730 DC |
809 | resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES; |
810 | ||
811 | resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp); | |
04398332 DW |
812 | if (xfs_sb_version_hasreflink(&mp->m_sb)) |
813 | resp->tr_itruncate.tr_logcount = | |
814 | XFS_ITRUNCATE_LOG_COUNT_REFLINK; | |
815 | else | |
816 | resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT; | |
cf52c730 DC |
817 | resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES; |
818 | ||
819 | resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp); | |
820 | resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT; | |
821 | resp->tr_rename.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
822 | ||
823 | resp->tr_link.tr_logres = xfs_calc_link_reservation(mp); | |
824 | resp->tr_link.tr_logcount = XFS_LINK_LOG_COUNT; | |
825 | resp->tr_link.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
826 | ||
827 | resp->tr_remove.tr_logres = xfs_calc_remove_reservation(mp); | |
828 | resp->tr_remove.tr_logcount = XFS_REMOVE_LOG_COUNT; | |
829 | resp->tr_remove.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
830 | ||
831 | resp->tr_symlink.tr_logres = xfs_calc_symlink_reservation(mp); | |
832 | resp->tr_symlink.tr_logcount = XFS_SYMLINK_LOG_COUNT; | |
833 | resp->tr_symlink.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
834 | ||
835 | resp->tr_create.tr_logres = xfs_calc_create_reservation(mp); | |
836 | resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT; | |
837 | resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
838 | ||
ff105f75 DC |
839 | resp->tr_create_tmpfile.tr_logres = |
840 | xfs_calc_create_tmpfile_reservation(mp); | |
841 | resp->tr_create_tmpfile.tr_logcount = XFS_CREATE_TMPFILE_LOG_COUNT; | |
842 | resp->tr_create_tmpfile.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
843 | ||
cf52c730 DC |
844 | resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp); |
845 | resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT; | |
846 | resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
847 | ||
848 | resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp); | |
849 | resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT; | |
850 | resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
851 | ||
852 | resp->tr_addafork.tr_logres = xfs_calc_addafork_reservation(mp); | |
853 | resp->tr_addafork.tr_logcount = XFS_ADDAFORK_LOG_COUNT; | |
854 | resp->tr_addafork.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
855 | ||
856 | resp->tr_attrinval.tr_logres = xfs_calc_attrinval_reservation(mp); | |
857 | resp->tr_attrinval.tr_logcount = XFS_ATTRINVAL_LOG_COUNT; | |
858 | resp->tr_attrinval.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
859 | ||
860 | resp->tr_attrsetm.tr_logres = xfs_calc_attrsetm_reservation(mp); | |
861 | resp->tr_attrsetm.tr_logcount = XFS_ATTRSET_LOG_COUNT; | |
862 | resp->tr_attrsetm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
863 | ||
864 | resp->tr_attrrm.tr_logres = xfs_calc_attrrm_reservation(mp); | |
865 | resp->tr_attrrm.tr_logcount = XFS_ATTRRM_LOG_COUNT; | |
866 | resp->tr_attrrm.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
867 | ||
868 | resp->tr_growrtalloc.tr_logres = xfs_calc_growrtalloc_reservation(mp); | |
869 | resp->tr_growrtalloc.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT; | |
870 | resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; | |
871 | ||
872 | resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp); | |
04398332 DW |
873 | if (xfs_sb_version_hasreflink(&mp->m_sb)) |
874 | resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT_REFLINK; | |
875 | else | |
876 | resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT; | |
cf52c730 DC |
877 | resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES; |
878 | ||
879 | /* | |
880 | * The following transactions are logged in logical format with | |
881 | * a default log count. | |
882 | */ | |
cf52c730 DC |
883 | resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp); |
884 | resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
885 | ||
886 | resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp); | |
887 | resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
888 | ||
889 | resp->tr_qm_equotaoff.tr_logres = | |
890 | xfs_calc_qm_quotaoff_end_reservation(mp); | |
891 | resp->tr_qm_equotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
892 | ||
893 | resp->tr_sb.tr_logres = xfs_calc_sb_reservation(mp); | |
894 | resp->tr_sb.tr_logcount = XFS_DEFAULT_LOG_COUNT; | |
895 | ||
896 | /* The following transaction are logged in logical format */ | |
897 | resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp); | |
898 | resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp); | |
60295fb3 | 899 | resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp); |
cf52c730 DC |
900 | resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp); |
901 | resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp); | |
902 | resp->tr_clearagi.tr_logres = xfs_calc_clear_agi_bucket_reservation(mp); | |
903 | resp->tr_growrtzero.tr_logres = xfs_calc_growrtzero_reservation(mp); | |
904 | resp->tr_growrtfree.tr_logres = xfs_calc_growrtfree_reservation(mp); | |
364e85ec | 905 | } |