Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
e98c414f | 3 | * Copyright (C) 2010 Red Hat, Inc. |
7b718769 | 4 | * All Rights Reserved. |
1da177e4 | 5 | * |
7b718769 NS |
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 | |
1da177e4 LT |
8 | * published by the Free Software Foundation. |
9 | * | |
7b718769 NS |
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. | |
1da177e4 | 14 | * |
7b718769 NS |
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 | |
1da177e4 | 18 | */ |
1da177e4 | 19 | #include "xfs.h" |
a844f451 | 20 | #include "xfs_fs.h" |
1da177e4 | 21 | #include "xfs_types.h" |
1da177e4 LT |
22 | #include "xfs_log.h" |
23 | #include "xfs_trans.h" | |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 LT |
26 | #include "xfs_mount.h" |
27 | #include "xfs_error.h" | |
a844f451 | 28 | #include "xfs_da_btree.h" |
1da177e4 | 29 | #include "xfs_bmap_btree.h" |
a844f451 | 30 | #include "xfs_alloc_btree.h" |
1da177e4 | 31 | #include "xfs_ialloc_btree.h" |
1da177e4 LT |
32 | #include "xfs_dinode.h" |
33 | #include "xfs_inode.h" | |
a844f451 NS |
34 | #include "xfs_btree.h" |
35 | #include "xfs_ialloc.h" | |
36 | #include "xfs_alloc.h" | |
efc27b52 | 37 | #include "xfs_extent_busy.h" |
1da177e4 | 38 | #include "xfs_bmap.h" |
1da177e4 | 39 | #include "xfs_quota.h" |
4f3b5783 | 40 | #include "xfs_qm.h" |
a844f451 | 41 | #include "xfs_trans_priv.h" |
1da177e4 | 42 | #include "xfs_trans_space.h" |
322ff6b8 | 43 | #include "xfs_inode_item.h" |
4f3b5783 JL |
44 | #include "xfs_log_priv.h" |
45 | #include "xfs_buf_item.h" | |
ed3b4d6c | 46 | #include "xfs_trace.h" |
1da177e4 | 47 | |
8f794055 | 48 | kmem_zone_t *xfs_trans_zone; |
e98c414f | 49 | kmem_zone_t *xfs_log_item_desc_zone; |
1da177e4 | 50 | |
4f3b5783 JL |
51 | /* |
52 | * A buffer has a format structure overhead in the log in addition | |
53 | * to the data, so we need to take this into account when reserving | |
54 | * space in a transaction for a buffer. Round the space required up | |
55 | * to a multiple of 128 bytes so that we don't change the historical | |
56 | * reservation that has been used for this overhead. | |
57 | */ | |
58 | STATIC uint | |
59 | xfs_buf_log_overhead(void) | |
60 | { | |
61 | return round_up(sizeof(struct xlog_op_header) + | |
62 | sizeof(struct xfs_buf_log_format), 128); | |
63 | } | |
64 | ||
65 | /* | |
66 | * Calculate out transaction log reservation per item in bytes. | |
67 | * | |
68 | * The nbufs argument is used to indicate the number of items that | |
69 | * will be changed in a transaction. size is used to tell how many | |
70 | * bytes should be reserved per item. | |
71 | */ | |
72 | STATIC uint | |
73 | xfs_calc_buf_res( | |
74 | uint nbufs, | |
75 | uint size) | |
76 | { | |
77 | return nbufs * (size + xfs_buf_log_overhead()); | |
78 | } | |
025101dc | 79 | |
8f794055 | 80 | /* |
025101dc CH |
81 | * Various log reservation values. |
82 | * | |
83 | * These are based on the size of the file system block because that is what | |
84 | * most transactions manipulate. Each adds in an additional 128 bytes per | |
85 | * item logged to try to account for the overhead of the transaction mechanism. | |
86 | * | |
87 | * Note: Most of the reservations underestimate the number of allocation | |
88 | * groups into which they could free extents in the xfs_bmap_finish() call. | |
89 | * This is because the number in the worst case is quite high and quite | |
90 | * unusual. In order to fix this we need to change xfs_bmap_finish() to free | |
91 | * extents in only a single AG at a time. This will require changes to the | |
92 | * EFI code as well, however, so that the EFI for the extents not freed is | |
93 | * logged again in each transaction. See SGI PV #261917. | |
94 | * | |
95 | * Reservation functions here avoid a huge stack in xfs_trans_init due to | |
96 | * register overflow from temporaries in the calculations. | |
97 | */ | |
98 | ||
99 | ||
100 | /* | |
101 | * In a write transaction we can allocate a maximum of 2 | |
102 | * extents. This gives: | |
103 | * the inode getting the new extents: inode size | |
104 | * the inode's bmap btree: max depth * block size | |
105 | * the agfs of the ags from which the extents are allocated: 2 * sector | |
106 | * the superblock free block counter: sector size | |
107 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
108 | * And the bmap_finish transaction can free bmap blocks in a join: | |
109 | * the agfs of the ags containing the blocks: 2 * sector size | |
110 | * the agfls of the ags containing the blocks: 2 * sector size | |
111 | * the super block free block counter: sector size | |
112 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
8f794055 | 113 | */ |
8f794055 | 114 | STATIC uint |
025101dc CH |
115 | xfs_calc_write_reservation( |
116 | struct xfs_mount *mp) | |
8f794055 | 117 | { |
025101dc | 118 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
119 | MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + |
120 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), | |
121 | XFS_FSB_TO_B(mp, 1)) + | |
122 | xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
123 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
124 | XFS_FSB_TO_B(mp, 1))), | |
125 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
126 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
127 | XFS_FSB_TO_B(mp, 1)))); | |
8f794055 NS |
128 | } |
129 | ||
025101dc CH |
130 | /* |
131 | * In truncating a file we free up to two extents at once. We can modify: | |
132 | * the inode being truncated: inode size | |
133 | * the inode's bmap btree: (max depth + 1) * block size | |
134 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
135 | * the agf for each of the ags: 4 * sector size | |
136 | * the agfl for each of the ags: 4 * sector size | |
137 | * the super block to reflect the freed blocks: sector size | |
138 | * worst case split in allocation btrees per extent assuming 4 extents: | |
139 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
140 | * the inode btree: max depth * blocksize | |
141 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
142 | */ | |
8f794055 | 143 | STATIC uint |
025101dc CH |
144 | xfs_calc_itruncate_reservation( |
145 | struct xfs_mount *mp) | |
8f794055 | 146 | { |
025101dc | 147 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
148 | MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + |
149 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, | |
150 | XFS_FSB_TO_B(mp, 1))), | |
151 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
152 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
153 | XFS_FSB_TO_B(mp, 1)) + | |
154 | xfs_calc_buf_res(5, 0) + | |
155 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
156 | XFS_FSB_TO_B(mp, 1)) + | |
157 | xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + | |
158 | mp->m_in_maxlevels, 0))); | |
8f794055 NS |
159 | } |
160 | ||
025101dc CH |
161 | /* |
162 | * In renaming a files we can modify: | |
163 | * the four inodes involved: 4 * inode size | |
164 | * the two directory btrees: 2 * (max depth + v2) * dir block size | |
165 | * the two directory bmap btrees: 2 * max depth * block size | |
166 | * And the bmap_finish transaction can free dir and bmap blocks (two sets | |
167 | * of bmap blocks) giving: | |
168 | * the agf for the ags in which the blocks live: 3 * sector size | |
169 | * the agfl for the ags in which the blocks live: 3 * sector size | |
170 | * the superblock for the free block count: sector size | |
171 | * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size | |
172 | */ | |
8f794055 | 173 | STATIC uint |
025101dc CH |
174 | xfs_calc_rename_reservation( |
175 | struct xfs_mount *mp) | |
8f794055 | 176 | { |
025101dc | 177 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
178 | MAX((xfs_calc_buf_res(4, mp->m_sb.sb_inodesize) + |
179 | xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), | |
180 | XFS_FSB_TO_B(mp, 1))), | |
181 | (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + | |
182 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3), | |
183 | XFS_FSB_TO_B(mp, 1)))); | |
8f794055 NS |
184 | } |
185 | ||
025101dc CH |
186 | /* |
187 | * For creating a link to an inode: | |
188 | * the parent directory inode: inode size | |
189 | * the linked inode: inode size | |
190 | * the directory btree could split: (max depth + v2) * dir block size | |
191 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
192 | * And the bmap_finish transaction can free some bmap blocks giving: | |
193 | * the agf for the ag in which the blocks live: sector size | |
194 | * the agfl for the ag in which the blocks live: sector size | |
195 | * the superblock for the free block count: sector size | |
196 | * the allocation btrees: 2 trees * (2 * max depth - 1) * block size | |
197 | */ | |
8f794055 | 198 | STATIC uint |
025101dc CH |
199 | xfs_calc_link_reservation( |
200 | struct xfs_mount *mp) | |
8f794055 | 201 | { |
025101dc | 202 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
203 | MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + |
204 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), | |
205 | XFS_FSB_TO_B(mp, 1))), | |
206 | (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + | |
207 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
208 | XFS_FSB_TO_B(mp, 1)))); | |
8f794055 NS |
209 | } |
210 | ||
025101dc CH |
211 | /* |
212 | * For removing a directory entry we can modify: | |
213 | * the parent directory inode: inode size | |
214 | * the removed inode: inode size | |
215 | * the directory btree could join: (max depth + v2) * dir block size | |
216 | * the directory bmap btree could join or split: (max depth + v2) * blocksize | |
217 | * And the bmap_finish transaction can free the dir and bmap blocks giving: | |
218 | * the agf for the ag in which the blocks live: 2 * sector size | |
219 | * the agfl for the ag in which the blocks live: 2 * sector size | |
220 | * the superblock for the free block count: sector size | |
221 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
222 | */ | |
8f794055 | 223 | STATIC uint |
025101dc CH |
224 | xfs_calc_remove_reservation( |
225 | struct xfs_mount *mp) | |
8f794055 | 226 | { |
025101dc | 227 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
228 | MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + |
229 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), | |
230 | XFS_FSB_TO_B(mp, 1))), | |
231 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
232 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
233 | XFS_FSB_TO_B(mp, 1)))); | |
8f794055 NS |
234 | } |
235 | ||
025101dc CH |
236 | /* |
237 | * For symlink we can modify: | |
238 | * the parent directory inode: inode size | |
239 | * the new inode: inode size | |
240 | * the inode btree entry: 1 block | |
241 | * the directory btree: (max depth + v2) * dir block size | |
242 | * the directory inode's bmap btree: (max depth + v2) * block size | |
243 | * the blocks for the symlink: 1 kB | |
244 | * Or in the first xact we allocate some inodes giving: | |
245 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
246 | * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize | |
247 | * the inode btree: max depth * blocksize | |
248 | * the allocation btrees: 2 trees * (2 * max depth - 1) * block size | |
249 | */ | |
8f794055 | 250 | STATIC uint |
025101dc CH |
251 | xfs_calc_symlink_reservation( |
252 | struct xfs_mount *mp) | |
8f794055 | 253 | { |
025101dc | 254 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
255 | MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + |
256 | xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + | |
257 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), | |
258 | XFS_FSB_TO_B(mp, 1)) + | |
259 | xfs_calc_buf_res(1, 1024)), | |
260 | (xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
261 | xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), | |
262 | XFS_FSB_TO_B(mp, 1)) + | |
263 | xfs_calc_buf_res(mp->m_in_maxlevels, | |
264 | XFS_FSB_TO_B(mp, 1)) + | |
265 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
266 | XFS_FSB_TO_B(mp, 1)))); | |
8f794055 NS |
267 | } |
268 | ||
025101dc CH |
269 | /* |
270 | * For create we can modify: | |
271 | * the parent directory inode: inode size | |
272 | * the new inode: inode size | |
273 | * the inode btree entry: block size | |
274 | * the superblock for the nlink flag: sector size | |
275 | * the directory btree: (max depth + v2) * dir block size | |
276 | * the directory inode's bmap btree: (max depth + v2) * block size | |
277 | * Or in the first xact we allocate some inodes giving: | |
278 | * the agi and agf of the ag getting the new inodes: 2 * sectorsize | |
279 | * the superblock for the nlink flag: sector size | |
280 | * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize | |
281 | * the inode btree: max depth * blocksize | |
282 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
283 | */ | |
8f794055 | 284 | STATIC uint |
025101dc CH |
285 | xfs_calc_create_reservation( |
286 | struct xfs_mount *mp) | |
8f794055 | 287 | { |
025101dc | 288 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
289 | MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + |
290 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
291 | (uint)XFS_FSB_TO_B(mp, 1) + | |
292 | xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), | |
293 | XFS_FSB_TO_B(mp, 1))), | |
294 | (xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
025101dc | 295 | mp->m_sb.sb_sectsize + |
5b292ae3 JL |
296 | xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), |
297 | XFS_FSB_TO_B(mp, 1)) + | |
298 | xfs_calc_buf_res(mp->m_in_maxlevels, | |
299 | XFS_FSB_TO_B(mp, 1)) + | |
300 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
301 | XFS_FSB_TO_B(mp, 1)))); | |
8f794055 NS |
302 | } |
303 | ||
025101dc CH |
304 | /* |
305 | * Making a new directory is the same as creating a new file. | |
306 | */ | |
8f794055 | 307 | STATIC uint |
025101dc CH |
308 | xfs_calc_mkdir_reservation( |
309 | struct xfs_mount *mp) | |
8f794055 | 310 | { |
025101dc | 311 | return xfs_calc_create_reservation(mp); |
8f794055 NS |
312 | } |
313 | ||
025101dc CH |
314 | /* |
315 | * In freeing an inode we can modify: | |
316 | * the inode being freed: inode size | |
317 | * the super block free inode counter: sector size | |
318 | * the agi hash list and counters: sector size | |
319 | * the inode btree entry: block size | |
320 | * the on disk inode before ours in the agi hash list: inode cluster size | |
321 | * the inode btree: max depth * blocksize | |
322 | * the allocation btrees: 2 trees * (max depth - 1) * block size | |
323 | */ | |
8f794055 | 324 | STATIC uint |
025101dc CH |
325 | xfs_calc_ifree_reservation( |
326 | struct xfs_mount *mp) | |
8f794055 | 327 | { |
025101dc | 328 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
329 | xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + |
330 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
331 | xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) + | |
025101dc CH |
332 | MAX((__uint16_t)XFS_FSB_TO_B(mp, 1), |
333 | XFS_INODE_CLUSTER_SIZE(mp)) + | |
5b292ae3 JL |
334 | xfs_calc_buf_res(1, 0) + |
335 | xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) + | |
336 | mp->m_in_maxlevels, 0) + | |
337 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
338 | XFS_FSB_TO_B(mp, 1)); | |
8f794055 NS |
339 | } |
340 | ||
025101dc CH |
341 | /* |
342 | * When only changing the inode we log the inode and possibly the superblock | |
343 | * We also add a bit of slop for the transaction stuff. | |
344 | */ | |
8f794055 | 345 | STATIC uint |
025101dc CH |
346 | xfs_calc_ichange_reservation( |
347 | struct xfs_mount *mp) | |
8f794055 | 348 | { |
025101dc CH |
349 | return XFS_DQUOT_LOGRES(mp) + |
350 | mp->m_sb.sb_inodesize + | |
351 | mp->m_sb.sb_sectsize + | |
352 | 512; | |
353 | ||
8f794055 NS |
354 | } |
355 | ||
025101dc CH |
356 | /* |
357 | * Growing the data section of the filesystem. | |
358 | * superblock | |
359 | * agi and agf | |
360 | * allocation btrees | |
361 | */ | |
8f794055 | 362 | STATIC uint |
025101dc CH |
363 | xfs_calc_growdata_reservation( |
364 | struct xfs_mount *mp) | |
8f794055 | 365 | { |
5b292ae3 JL |
366 | return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + |
367 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
368 | XFS_FSB_TO_B(mp, 1)); | |
8f794055 NS |
369 | } |
370 | ||
025101dc CH |
371 | /* |
372 | * Growing the rt section of the filesystem. | |
373 | * In the first set of transactions (ALLOC) we allocate space to the | |
374 | * bitmap or summary files. | |
375 | * superblock: sector size | |
376 | * agf of the ag from which the extent is allocated: sector size | |
377 | * bmap btree for bitmap/summary inode: max depth * blocksize | |
378 | * bitmap/summary inode: inode size | |
379 | * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize | |
380 | */ | |
8f794055 | 381 | STATIC uint |
025101dc CH |
382 | xfs_calc_growrtalloc_reservation( |
383 | struct xfs_mount *mp) | |
8f794055 | 384 | { |
5b292ae3 JL |
385 | return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + |
386 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), | |
387 | XFS_FSB_TO_B(mp, 1)) + | |
388 | xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + | |
389 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
390 | XFS_FSB_TO_B(mp, 1)); | |
8f794055 NS |
391 | } |
392 | ||
025101dc CH |
393 | /* |
394 | * Growing the rt section of the filesystem. | |
395 | * In the second set of transactions (ZERO) we zero the new metadata blocks. | |
396 | * one bitmap/summary block: blocksize | |
397 | */ | |
8f794055 | 398 | STATIC uint |
025101dc CH |
399 | xfs_calc_growrtzero_reservation( |
400 | struct xfs_mount *mp) | |
8f794055 | 401 | { |
5b292ae3 | 402 | return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize); |
8f794055 NS |
403 | } |
404 | ||
025101dc CH |
405 | /* |
406 | * Growing the rt section of the filesystem. | |
407 | * In the third set of transactions (FREE) we update metadata without | |
408 | * allocating any new blocks. | |
409 | * superblock: sector size | |
410 | * bitmap inode: inode size | |
411 | * summary inode: inode size | |
412 | * one bitmap block: blocksize | |
413 | * summary blocks: new summary size | |
414 | */ | |
8f794055 | 415 | STATIC uint |
025101dc CH |
416 | xfs_calc_growrtfree_reservation( |
417 | struct xfs_mount *mp) | |
8f794055 | 418 | { |
5b292ae3 JL |
419 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + |
420 | xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) + | |
421 | xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) + | |
422 | xfs_calc_buf_res(1, mp->m_rsumsize); | |
8f794055 NS |
423 | } |
424 | ||
025101dc CH |
425 | /* |
426 | * Logging the inode modification timestamp on a synchronous write. | |
427 | * inode | |
428 | */ | |
8f794055 | 429 | STATIC uint |
025101dc CH |
430 | xfs_calc_swrite_reservation( |
431 | struct xfs_mount *mp) | |
8f794055 | 432 | { |
5b292ae3 | 433 | return xfs_calc_buf_res(1, mp->m_sb.sb_inodesize); |
8f794055 NS |
434 | } |
435 | ||
025101dc CH |
436 | /* |
437 | * Logging the inode mode bits when writing a setuid/setgid file | |
438 | * inode | |
439 | */ | |
8f794055 NS |
440 | STATIC uint |
441 | xfs_calc_writeid_reservation(xfs_mount_t *mp) | |
442 | { | |
5b292ae3 | 443 | return xfs_calc_buf_res(1, mp->m_sb.sb_inodesize); |
8f794055 NS |
444 | } |
445 | ||
025101dc CH |
446 | /* |
447 | * Converting the inode from non-attributed to attributed. | |
448 | * the inode being converted: inode size | |
449 | * agf block and superblock (for block allocation) | |
450 | * the new block (directory sized) | |
451 | * bmap blocks for the new directory block | |
452 | * allocation btrees | |
453 | */ | |
8f794055 | 454 | STATIC uint |
025101dc CH |
455 | xfs_calc_addafork_reservation( |
456 | struct xfs_mount *mp) | |
8f794055 | 457 | { |
025101dc | 458 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
459 | xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + |
460 | xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + | |
461 | xfs_calc_buf_res(1, mp->m_dirblksize) + | |
462 | xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, | |
463 | XFS_FSB_TO_B(mp, 1)) + | |
464 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), | |
465 | XFS_FSB_TO_B(mp, 1)); | |
8f794055 NS |
466 | } |
467 | ||
025101dc CH |
468 | /* |
469 | * Removing the attribute fork of a file | |
470 | * the inode being truncated: inode size | |
471 | * the inode's bmap btree: max depth * block size | |
472 | * And the bmap_finish transaction can free the blocks and bmap blocks: | |
473 | * the agf for each of the ags: 4 * sector size | |
474 | * the agfl for each of the ags: 4 * sector size | |
475 | * the super block to reflect the freed blocks: sector size | |
476 | * worst case split in allocation btrees per extent assuming 4 extents: | |
477 | * 4 exts * 2 trees * (2 * max depth - 1) * block size | |
478 | */ | |
8f794055 | 479 | STATIC uint |
025101dc CH |
480 | xfs_calc_attrinval_reservation( |
481 | struct xfs_mount *mp) | |
8f794055 | 482 | { |
5b292ae3 JL |
483 | return MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + |
484 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), | |
485 | XFS_FSB_TO_B(mp, 1))), | |
486 | (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + | |
487 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), | |
488 | XFS_FSB_TO_B(mp, 1)))); | |
8f794055 NS |
489 | } |
490 | ||
025101dc CH |
491 | /* |
492 | * Setting an attribute. | |
493 | * the inode getting the attribute | |
494 | * the superblock for allocations | |
495 | * the agfs extents are allocated from | |
496 | * the attribute btree * max depth | |
497 | * the inode allocation btree | |
498 | * Since attribute transaction space is dependent on the size of the attribute, | |
499 | * the calculation is done partially at mount time and partially at runtime. | |
500 | */ | |
8f794055 | 501 | STATIC uint |
025101dc CH |
502 | xfs_calc_attrset_reservation( |
503 | struct xfs_mount *mp) | |
8f794055 | 504 | { |
025101dc | 505 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
506 | xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + |
507 | xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) + | |
508 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1)); | |
8f794055 NS |
509 | } |
510 | ||
025101dc CH |
511 | /* |
512 | * Removing an attribute. | |
513 | * the inode: inode size | |
514 | * the attribute btree could join: max depth * block size | |
515 | * the inode bmap btree could join or split: max depth * block size | |
516 | * And the bmap_finish transaction can free the attr blocks freed giving: | |
517 | * the agf for the ag in which the blocks live: 2 * sector size | |
518 | * the agfl for the ag in which the blocks live: 2 * sector size | |
519 | * the superblock for the free block count: sector size | |
520 | * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size | |
521 | */ | |
8f794055 | 522 | STATIC uint |
025101dc CH |
523 | xfs_calc_attrrm_reservation( |
524 | struct xfs_mount *mp) | |
8f794055 | 525 | { |
025101dc | 526 | return XFS_DQUOT_LOGRES(mp) + |
5b292ae3 JL |
527 | MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) + |
528 | xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, | |
529 | XFS_FSB_TO_B(mp, 1)) + | |
530 | (uint)XFS_FSB_TO_B(mp, | |
531 | XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + | |
532 | xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), | |
533 | (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + | |
534 | xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), | |
535 | XFS_FSB_TO_B(mp, 1)))); | |
8f794055 NS |
536 | } |
537 | ||
025101dc CH |
538 | /* |
539 | * Clearing a bad agino number in an agi hash bucket. | |
540 | */ | |
8f794055 | 541 | STATIC uint |
025101dc CH |
542 | xfs_calc_clear_agi_bucket_reservation( |
543 | struct xfs_mount *mp) | |
8f794055 | 544 | { |
5b292ae3 | 545 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); |
8f794055 NS |
546 | } |
547 | ||
b0c10b98 JL |
548 | /* |
549 | * Clearing the quotaflags in the superblock. | |
550 | * the super block for changing quota flags: sector size | |
551 | */ | |
552 | STATIC uint | |
553 | xfs_calc_qm_sbchange_reservation( | |
554 | struct xfs_mount *mp) | |
555 | { | |
556 | return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize); | |
557 | } | |
558 | ||
f0f2df94 JL |
559 | /* |
560 | * Adjusting quota limits. | |
561 | * the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot) | |
562 | */ | |
563 | STATIC uint | |
564 | xfs_calc_qm_setqlim_reservation( | |
565 | struct xfs_mount *mp) | |
566 | { | |
567 | return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot)); | |
568 | } | |
569 | ||
1da177e4 LT |
570 | /* |
571 | * Initialize the precomputed transaction reservation values | |
572 | * in the mount structure. | |
573 | */ | |
574 | void | |
575 | xfs_trans_init( | |
025101dc | 576 | struct xfs_mount *mp) |
1da177e4 | 577 | { |
025101dc | 578 | struct xfs_trans_reservations *resp = &mp->m_reservations; |
1da177e4 | 579 | |
8f794055 NS |
580 | resp->tr_write = xfs_calc_write_reservation(mp); |
581 | resp->tr_itruncate = xfs_calc_itruncate_reservation(mp); | |
582 | resp->tr_rename = xfs_calc_rename_reservation(mp); | |
583 | resp->tr_link = xfs_calc_link_reservation(mp); | |
584 | resp->tr_remove = xfs_calc_remove_reservation(mp); | |
585 | resp->tr_symlink = xfs_calc_symlink_reservation(mp); | |
586 | resp->tr_create = xfs_calc_create_reservation(mp); | |
587 | resp->tr_mkdir = xfs_calc_mkdir_reservation(mp); | |
588 | resp->tr_ifree = xfs_calc_ifree_reservation(mp); | |
589 | resp->tr_ichange = xfs_calc_ichange_reservation(mp); | |
590 | resp->tr_growdata = xfs_calc_growdata_reservation(mp); | |
591 | resp->tr_swrite = xfs_calc_swrite_reservation(mp); | |
592 | resp->tr_writeid = xfs_calc_writeid_reservation(mp); | |
593 | resp->tr_addafork = xfs_calc_addafork_reservation(mp); | |
594 | resp->tr_attrinval = xfs_calc_attrinval_reservation(mp); | |
595 | resp->tr_attrset = xfs_calc_attrset_reservation(mp); | |
596 | resp->tr_attrrm = xfs_calc_attrrm_reservation(mp); | |
597 | resp->tr_clearagi = xfs_calc_clear_agi_bucket_reservation(mp); | |
598 | resp->tr_growrtalloc = xfs_calc_growrtalloc_reservation(mp); | |
599 | resp->tr_growrtzero = xfs_calc_growrtzero_reservation(mp); | |
600 | resp->tr_growrtfree = xfs_calc_growrtfree_reservation(mp); | |
b0c10b98 | 601 | resp->tr_qm_sbchange = xfs_calc_qm_sbchange_reservation(mp); |
f0f2df94 | 602 | resp->tr_qm_setqlim = xfs_calc_qm_setqlim_reservation(mp); |
1da177e4 LT |
603 | } |
604 | ||
605 | /* | |
606 | * This routine is called to allocate a transaction structure. | |
607 | * The type parameter indicates the type of the transaction. These | |
608 | * are enumerated in xfs_trans.h. | |
b2ce3974 AE |
609 | * |
610 | * Dynamically allocate the transaction structure from the transaction | |
611 | * zone, initialize it, and return it to the caller. | |
1da177e4 | 612 | */ |
b2ce3974 AE |
613 | xfs_trans_t * |
614 | xfs_trans_alloc( | |
615 | xfs_mount_t *mp, | |
616 | uint type) | |
617 | { | |
d9457dc0 JK |
618 | xfs_trans_t *tp; |
619 | ||
620 | sb_start_intwrite(mp->m_super); | |
621 | tp = _xfs_trans_alloc(mp, type, KM_SLEEP); | |
622 | tp->t_flags |= XFS_TRANS_FREEZE_PROT; | |
623 | return tp; | |
b2ce3974 AE |
624 | } |
625 | ||
626 | xfs_trans_t * | |
1da177e4 | 627 | _xfs_trans_alloc( |
b2ce3974 AE |
628 | xfs_mount_t *mp, |
629 | uint type, | |
77ba7877 | 630 | xfs_km_flags_t memflags) |
1da177e4 | 631 | { |
b2ce3974 | 632 | xfs_trans_t *tp; |
1da177e4 | 633 | |
d9457dc0 | 634 | WARN_ON(mp->m_super->s_writers.frozen == SB_FREEZE_COMPLETE); |
34327e13 | 635 | atomic_inc(&mp->m_active_trans); |
1da177e4 | 636 | |
80641dc6 | 637 | tp = kmem_zone_zalloc(xfs_trans_zone, memflags); |
1da177e4 LT |
638 | tp->t_magic = XFS_TRANS_MAGIC; |
639 | tp->t_type = type; | |
640 | tp->t_mountp = mp; | |
e98c414f | 641 | INIT_LIST_HEAD(&tp->t_items); |
ed3b4d6c | 642 | INIT_LIST_HEAD(&tp->t_busy); |
34327e13 | 643 | return tp; |
1da177e4 LT |
644 | } |
645 | ||
b1c1b5b6 DC |
646 | /* |
647 | * Free the transaction structure. If there is more clean up | |
648 | * to do when the structure is freed, add it here. | |
649 | */ | |
650 | STATIC void | |
651 | xfs_trans_free( | |
ed3b4d6c | 652 | struct xfs_trans *tp) |
b1c1b5b6 | 653 | { |
4ecbfe63 DC |
654 | xfs_extent_busy_sort(&tp->t_busy); |
655 | xfs_extent_busy_clear(tp->t_mountp, &tp->t_busy, false); | |
ed3b4d6c | 656 | |
b1c1b5b6 | 657 | atomic_dec(&tp->t_mountp->m_active_trans); |
d9457dc0 JK |
658 | if (tp->t_flags & XFS_TRANS_FREEZE_PROT) |
659 | sb_end_intwrite(tp->t_mountp->m_super); | |
b1c1b5b6 DC |
660 | xfs_trans_free_dqinfo(tp); |
661 | kmem_zone_free(xfs_trans_zone, tp); | |
662 | } | |
663 | ||
1da177e4 LT |
664 | /* |
665 | * This is called to create a new transaction which will share the | |
666 | * permanent log reservation of the given transaction. The remaining | |
667 | * unused block and rt extent reservations are also inherited. This | |
668 | * implies that the original transaction is no longer allowed to allocate | |
669 | * blocks. Locks and log items, however, are no inherited. They must | |
670 | * be added to the new transaction explicitly. | |
671 | */ | |
672 | xfs_trans_t * | |
673 | xfs_trans_dup( | |
674 | xfs_trans_t *tp) | |
675 | { | |
676 | xfs_trans_t *ntp; | |
677 | ||
678 | ntp = kmem_zone_zalloc(xfs_trans_zone, KM_SLEEP); | |
679 | ||
680 | /* | |
681 | * Initialize the new transaction structure. | |
682 | */ | |
683 | ntp->t_magic = XFS_TRANS_MAGIC; | |
684 | ntp->t_type = tp->t_type; | |
685 | ntp->t_mountp = tp->t_mountp; | |
e98c414f | 686 | INIT_LIST_HEAD(&ntp->t_items); |
ed3b4d6c | 687 | INIT_LIST_HEAD(&ntp->t_busy); |
1da177e4 LT |
688 | |
689 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
1da177e4 | 690 | ASSERT(tp->t_ticket != NULL); |
cfcbbbd0 | 691 | |
d9457dc0 JK |
692 | ntp->t_flags = XFS_TRANS_PERM_LOG_RES | |
693 | (tp->t_flags & XFS_TRANS_RESERVE) | | |
694 | (tp->t_flags & XFS_TRANS_FREEZE_PROT); | |
695 | /* We gave our writer reference to the new transaction */ | |
696 | tp->t_flags &= ~XFS_TRANS_FREEZE_PROT; | |
cc09c0dc | 697 | ntp->t_ticket = xfs_log_ticket_get(tp->t_ticket); |
1da177e4 LT |
698 | ntp->t_blk_res = tp->t_blk_res - tp->t_blk_res_used; |
699 | tp->t_blk_res = tp->t_blk_res_used; | |
700 | ntp->t_rtx_res = tp->t_rtx_res - tp->t_rtx_res_used; | |
701 | tp->t_rtx_res = tp->t_rtx_res_used; | |
59c1b082 | 702 | ntp->t_pflags = tp->t_pflags; |
1da177e4 | 703 | |
7d095257 | 704 | xfs_trans_dup_dqinfo(tp, ntp); |
1da177e4 LT |
705 | |
706 | atomic_inc(&tp->t_mountp->m_active_trans); | |
707 | return ntp; | |
708 | } | |
709 | ||
710 | /* | |
711 | * This is called to reserve free disk blocks and log space for the | |
712 | * given transaction. This must be done before allocating any resources | |
713 | * within the transaction. | |
714 | * | |
715 | * This will return ENOSPC if there are not enough blocks available. | |
716 | * It will sleep waiting for available log space. | |
717 | * The only valid value for the flags parameter is XFS_RES_LOG_PERM, which | |
718 | * is used by long running transactions. If any one of the reservations | |
719 | * fails then they will all be backed out. | |
720 | * | |
721 | * This does not do quota reservations. That typically is done by the | |
722 | * caller afterwards. | |
723 | */ | |
724 | int | |
725 | xfs_trans_reserve( | |
726 | xfs_trans_t *tp, | |
727 | uint blocks, | |
728 | uint logspace, | |
729 | uint rtextents, | |
730 | uint flags, | |
731 | uint logcount) | |
732 | { | |
59c1b082 NS |
733 | int error = 0; |
734 | int rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; | |
1da177e4 LT |
735 | |
736 | /* Mark this thread as being in a transaction */ | |
59c1b082 | 737 | current_set_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 LT |
738 | |
739 | /* | |
740 | * Attempt to reserve the needed disk blocks by decrementing | |
741 | * the number needed from the number available. This will | |
742 | * fail if the count would go below zero. | |
743 | */ | |
744 | if (blocks > 0) { | |
96540c78 | 745 | error = xfs_icsb_modify_counters(tp->t_mountp, XFS_SBS_FDBLOCKS, |
20f4ebf2 | 746 | -((int64_t)blocks), rsvd); |
1da177e4 | 747 | if (error != 0) { |
59c1b082 | 748 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 LT |
749 | return (XFS_ERROR(ENOSPC)); |
750 | } | |
751 | tp->t_blk_res += blocks; | |
752 | } | |
753 | ||
754 | /* | |
755 | * Reserve the log space needed for this transaction. | |
756 | */ | |
757 | if (logspace > 0) { | |
9006fb91 CH |
758 | bool permanent = false; |
759 | ||
760 | ASSERT(tp->t_log_res == 0 || tp->t_log_res == logspace); | |
761 | ASSERT(tp->t_log_count == 0 || tp->t_log_count == logcount); | |
762 | ||
1da177e4 | 763 | if (flags & XFS_TRANS_PERM_LOG_RES) { |
1da177e4 | 764 | tp->t_flags |= XFS_TRANS_PERM_LOG_RES; |
9006fb91 | 765 | permanent = true; |
1da177e4 LT |
766 | } else { |
767 | ASSERT(tp->t_ticket == NULL); | |
768 | ASSERT(!(tp->t_flags & XFS_TRANS_PERM_LOG_RES)); | |
1da177e4 LT |
769 | } |
770 | ||
9006fb91 CH |
771 | if (tp->t_ticket != NULL) { |
772 | ASSERT(flags & XFS_TRANS_PERM_LOG_RES); | |
773 | error = xfs_log_regrant(tp->t_mountp, tp->t_ticket); | |
774 | } else { | |
775 | error = xfs_log_reserve(tp->t_mountp, logspace, | |
776 | logcount, &tp->t_ticket, | |
777 | XFS_TRANSACTION, permanent, | |
778 | tp->t_type); | |
1da177e4 | 779 | } |
9006fb91 CH |
780 | |
781 | if (error) | |
782 | goto undo_blocks; | |
783 | ||
1da177e4 LT |
784 | tp->t_log_res = logspace; |
785 | tp->t_log_count = logcount; | |
786 | } | |
787 | ||
788 | /* | |
789 | * Attempt to reserve the needed realtime extents by decrementing | |
790 | * the number needed from the number available. This will | |
791 | * fail if the count would go below zero. | |
792 | */ | |
793 | if (rtextents > 0) { | |
794 | error = xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FREXTENTS, | |
20f4ebf2 | 795 | -((int64_t)rtextents), rsvd); |
1da177e4 LT |
796 | if (error) { |
797 | error = XFS_ERROR(ENOSPC); | |
798 | goto undo_log; | |
799 | } | |
800 | tp->t_rtx_res += rtextents; | |
801 | } | |
802 | ||
803 | return 0; | |
804 | ||
805 | /* | |
806 | * Error cases jump to one of these labels to undo any | |
807 | * reservations which have already been performed. | |
808 | */ | |
809 | undo_log: | |
810 | if (logspace > 0) { | |
9006fb91 CH |
811 | int log_flags; |
812 | ||
1da177e4 LT |
813 | if (flags & XFS_TRANS_PERM_LOG_RES) { |
814 | log_flags = XFS_LOG_REL_PERM_RESERV; | |
815 | } else { | |
816 | log_flags = 0; | |
817 | } | |
818 | xfs_log_done(tp->t_mountp, tp->t_ticket, NULL, log_flags); | |
819 | tp->t_ticket = NULL; | |
820 | tp->t_log_res = 0; | |
821 | tp->t_flags &= ~XFS_TRANS_PERM_LOG_RES; | |
822 | } | |
823 | ||
824 | undo_blocks: | |
825 | if (blocks > 0) { | |
96540c78 | 826 | xfs_icsb_modify_counters(tp->t_mountp, XFS_SBS_FDBLOCKS, |
20f4ebf2 | 827 | (int64_t)blocks, rsvd); |
1da177e4 LT |
828 | tp->t_blk_res = 0; |
829 | } | |
830 | ||
59c1b082 | 831 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 | 832 | |
59c1b082 | 833 | return error; |
1da177e4 LT |
834 | } |
835 | ||
1da177e4 LT |
836 | /* |
837 | * Record the indicated change to the given field for application | |
838 | * to the file system's superblock when the transaction commits. | |
839 | * For now, just store the change in the transaction structure. | |
840 | * | |
841 | * Mark the transaction structure to indicate that the superblock | |
842 | * needs to be updated before committing. | |
92821e2b DC |
843 | * |
844 | * Because we may not be keeping track of allocated/free inodes and | |
845 | * used filesystem blocks in the superblock, we do not mark the | |
846 | * superblock dirty in this transaction if we modify these fields. | |
847 | * We still need to update the transaction deltas so that they get | |
848 | * applied to the incore superblock, but we don't want them to | |
849 | * cause the superblock to get locked and logged if these are the | |
850 | * only fields in the superblock that the transaction modifies. | |
1da177e4 LT |
851 | */ |
852 | void | |
853 | xfs_trans_mod_sb( | |
854 | xfs_trans_t *tp, | |
855 | uint field, | |
20f4ebf2 | 856 | int64_t delta) |
1da177e4 | 857 | { |
92821e2b DC |
858 | uint32_t flags = (XFS_TRANS_DIRTY|XFS_TRANS_SB_DIRTY); |
859 | xfs_mount_t *mp = tp->t_mountp; | |
1da177e4 LT |
860 | |
861 | switch (field) { | |
862 | case XFS_TRANS_SB_ICOUNT: | |
863 | tp->t_icount_delta += delta; | |
92821e2b DC |
864 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
865 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
866 | break; |
867 | case XFS_TRANS_SB_IFREE: | |
868 | tp->t_ifree_delta += delta; | |
92821e2b DC |
869 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
870 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
871 | break; |
872 | case XFS_TRANS_SB_FDBLOCKS: | |
873 | /* | |
874 | * Track the number of blocks allocated in the | |
875 | * transaction. Make sure it does not exceed the | |
876 | * number reserved. | |
877 | */ | |
878 | if (delta < 0) { | |
879 | tp->t_blk_res_used += (uint)-delta; | |
880 | ASSERT(tp->t_blk_res_used <= tp->t_blk_res); | |
881 | } | |
882 | tp->t_fdblocks_delta += delta; | |
92821e2b DC |
883 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
884 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
885 | break; |
886 | case XFS_TRANS_SB_RES_FDBLOCKS: | |
887 | /* | |
888 | * The allocation has already been applied to the | |
889 | * in-core superblock's counter. This should only | |
890 | * be applied to the on-disk superblock. | |
891 | */ | |
892 | ASSERT(delta < 0); | |
893 | tp->t_res_fdblocks_delta += delta; | |
92821e2b DC |
894 | if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |
895 | flags &= ~XFS_TRANS_SB_DIRTY; | |
1da177e4 LT |
896 | break; |
897 | case XFS_TRANS_SB_FREXTENTS: | |
898 | /* | |
899 | * Track the number of blocks allocated in the | |
900 | * transaction. Make sure it does not exceed the | |
901 | * number reserved. | |
902 | */ | |
903 | if (delta < 0) { | |
904 | tp->t_rtx_res_used += (uint)-delta; | |
905 | ASSERT(tp->t_rtx_res_used <= tp->t_rtx_res); | |
906 | } | |
907 | tp->t_frextents_delta += delta; | |
908 | break; | |
909 | case XFS_TRANS_SB_RES_FREXTENTS: | |
910 | /* | |
911 | * The allocation has already been applied to the | |
c41564b5 | 912 | * in-core superblock's counter. This should only |
1da177e4 LT |
913 | * be applied to the on-disk superblock. |
914 | */ | |
915 | ASSERT(delta < 0); | |
916 | tp->t_res_frextents_delta += delta; | |
917 | break; | |
918 | case XFS_TRANS_SB_DBLOCKS: | |
919 | ASSERT(delta > 0); | |
920 | tp->t_dblocks_delta += delta; | |
921 | break; | |
922 | case XFS_TRANS_SB_AGCOUNT: | |
923 | ASSERT(delta > 0); | |
924 | tp->t_agcount_delta += delta; | |
925 | break; | |
926 | case XFS_TRANS_SB_IMAXPCT: | |
927 | tp->t_imaxpct_delta += delta; | |
928 | break; | |
929 | case XFS_TRANS_SB_REXTSIZE: | |
930 | tp->t_rextsize_delta += delta; | |
931 | break; | |
932 | case XFS_TRANS_SB_RBMBLOCKS: | |
933 | tp->t_rbmblocks_delta += delta; | |
934 | break; | |
935 | case XFS_TRANS_SB_RBLOCKS: | |
936 | tp->t_rblocks_delta += delta; | |
937 | break; | |
938 | case XFS_TRANS_SB_REXTENTS: | |
939 | tp->t_rextents_delta += delta; | |
940 | break; | |
941 | case XFS_TRANS_SB_REXTSLOG: | |
942 | tp->t_rextslog_delta += delta; | |
943 | break; | |
944 | default: | |
945 | ASSERT(0); | |
946 | return; | |
947 | } | |
948 | ||
210c6f1c | 949 | tp->t_flags |= flags; |
1da177e4 LT |
950 | } |
951 | ||
952 | /* | |
953 | * xfs_trans_apply_sb_deltas() is called from the commit code | |
954 | * to bring the superblock buffer into the current transaction | |
955 | * and modify it as requested by earlier calls to xfs_trans_mod_sb(). | |
956 | * | |
957 | * For now we just look at each field allowed to change and change | |
958 | * it if necessary. | |
959 | */ | |
960 | STATIC void | |
961 | xfs_trans_apply_sb_deltas( | |
962 | xfs_trans_t *tp) | |
963 | { | |
2bdf7cd0 | 964 | xfs_dsb_t *sbp; |
1da177e4 LT |
965 | xfs_buf_t *bp; |
966 | int whole = 0; | |
967 | ||
968 | bp = xfs_trans_getsb(tp, tp->t_mountp, 0); | |
969 | sbp = XFS_BUF_TO_SBP(bp); | |
970 | ||
971 | /* | |
972 | * Check that superblock mods match the mods made to AGF counters. | |
973 | */ | |
974 | ASSERT((tp->t_fdblocks_delta + tp->t_res_fdblocks_delta) == | |
975 | (tp->t_ag_freeblks_delta + tp->t_ag_flist_delta + | |
976 | tp->t_ag_btree_delta)); | |
977 | ||
92821e2b DC |
978 | /* |
979 | * Only update the superblock counters if we are logging them | |
980 | */ | |
981 | if (!xfs_sb_version_haslazysbcount(&(tp->t_mountp->m_sb))) { | |
2bdf7cd0 | 982 | if (tp->t_icount_delta) |
413d57c9 | 983 | be64_add_cpu(&sbp->sb_icount, tp->t_icount_delta); |
2bdf7cd0 | 984 | if (tp->t_ifree_delta) |
413d57c9 | 985 | be64_add_cpu(&sbp->sb_ifree, tp->t_ifree_delta); |
2bdf7cd0 | 986 | if (tp->t_fdblocks_delta) |
413d57c9 | 987 | be64_add_cpu(&sbp->sb_fdblocks, tp->t_fdblocks_delta); |
2bdf7cd0 | 988 | if (tp->t_res_fdblocks_delta) |
413d57c9 | 989 | be64_add_cpu(&sbp->sb_fdblocks, tp->t_res_fdblocks_delta); |
1da177e4 LT |
990 | } |
991 | ||
2bdf7cd0 | 992 | if (tp->t_frextents_delta) |
413d57c9 | 993 | be64_add_cpu(&sbp->sb_frextents, tp->t_frextents_delta); |
2bdf7cd0 | 994 | if (tp->t_res_frextents_delta) |
413d57c9 | 995 | be64_add_cpu(&sbp->sb_frextents, tp->t_res_frextents_delta); |
2bdf7cd0 CH |
996 | |
997 | if (tp->t_dblocks_delta) { | |
413d57c9 | 998 | be64_add_cpu(&sbp->sb_dblocks, tp->t_dblocks_delta); |
1da177e4 LT |
999 | whole = 1; |
1000 | } | |
2bdf7cd0 | 1001 | if (tp->t_agcount_delta) { |
413d57c9 | 1002 | be32_add_cpu(&sbp->sb_agcount, tp->t_agcount_delta); |
1da177e4 LT |
1003 | whole = 1; |
1004 | } | |
2bdf7cd0 CH |
1005 | if (tp->t_imaxpct_delta) { |
1006 | sbp->sb_imax_pct += tp->t_imaxpct_delta; | |
1da177e4 LT |
1007 | whole = 1; |
1008 | } | |
2bdf7cd0 | 1009 | if (tp->t_rextsize_delta) { |
413d57c9 | 1010 | be32_add_cpu(&sbp->sb_rextsize, tp->t_rextsize_delta); |
1da177e4 LT |
1011 | whole = 1; |
1012 | } | |
2bdf7cd0 | 1013 | if (tp->t_rbmblocks_delta) { |
413d57c9 | 1014 | be32_add_cpu(&sbp->sb_rbmblocks, tp->t_rbmblocks_delta); |
1da177e4 LT |
1015 | whole = 1; |
1016 | } | |
2bdf7cd0 | 1017 | if (tp->t_rblocks_delta) { |
413d57c9 | 1018 | be64_add_cpu(&sbp->sb_rblocks, tp->t_rblocks_delta); |
1da177e4 LT |
1019 | whole = 1; |
1020 | } | |
2bdf7cd0 | 1021 | if (tp->t_rextents_delta) { |
413d57c9 | 1022 | be64_add_cpu(&sbp->sb_rextents, tp->t_rextents_delta); |
1da177e4 LT |
1023 | whole = 1; |
1024 | } | |
2bdf7cd0 CH |
1025 | if (tp->t_rextslog_delta) { |
1026 | sbp->sb_rextslog += tp->t_rextslog_delta; | |
1da177e4 LT |
1027 | whole = 1; |
1028 | } | |
1029 | ||
1030 | if (whole) | |
1031 | /* | |
c41564b5 | 1032 | * Log the whole thing, the fields are noncontiguous. |
1da177e4 | 1033 | */ |
2bdf7cd0 | 1034 | xfs_trans_log_buf(tp, bp, 0, sizeof(xfs_dsb_t) - 1); |
1da177e4 LT |
1035 | else |
1036 | /* | |
1037 | * Since all the modifiable fields are contiguous, we | |
1038 | * can get away with this. | |
1039 | */ | |
2bdf7cd0 CH |
1040 | xfs_trans_log_buf(tp, bp, offsetof(xfs_dsb_t, sb_icount), |
1041 | offsetof(xfs_dsb_t, sb_frextents) + | |
1da177e4 | 1042 | sizeof(sbp->sb_frextents) - 1); |
1da177e4 LT |
1043 | } |
1044 | ||
1045 | /* | |
45c34141 DC |
1046 | * xfs_trans_unreserve_and_mod_sb() is called to release unused reservations |
1047 | * and apply superblock counter changes to the in-core superblock. The | |
1048 | * t_res_fdblocks_delta and t_res_frextents_delta fields are explicitly NOT | |
1049 | * applied to the in-core superblock. The idea is that that has already been | |
1050 | * done. | |
1da177e4 LT |
1051 | * |
1052 | * This is done efficiently with a single call to xfs_mod_incore_sb_batch(). | |
45c34141 DC |
1053 | * However, we have to ensure that we only modify each superblock field only |
1054 | * once because the application of the delta values may not be atomic. That can | |
1055 | * lead to ENOSPC races occurring if we have two separate modifcations of the | |
1056 | * free space counter to put back the entire reservation and then take away | |
1057 | * what we used. | |
1058 | * | |
1059 | * If we are not logging superblock counters, then the inode allocated/free and | |
1060 | * used block counts are not updated in the on disk superblock. In this case, | |
1061 | * XFS_TRANS_SB_DIRTY will not be set when the transaction is updated but we | |
1062 | * still need to update the incore superblock with the changes. | |
1da177e4 | 1063 | */ |
71e330b5 | 1064 | void |
1da177e4 LT |
1065 | xfs_trans_unreserve_and_mod_sb( |
1066 | xfs_trans_t *tp) | |
1067 | { | |
1b040712 | 1068 | xfs_mod_sb_t msb[9]; /* If you add cases, add entries */ |
1da177e4 | 1069 | xfs_mod_sb_t *msbp; |
92821e2b | 1070 | xfs_mount_t *mp = tp->t_mountp; |
1da177e4 LT |
1071 | /* REFERENCED */ |
1072 | int error; | |
1073 | int rsvd; | |
45c34141 DC |
1074 | int64_t blkdelta = 0; |
1075 | int64_t rtxdelta = 0; | |
1b040712 CH |
1076 | int64_t idelta = 0; |
1077 | int64_t ifreedelta = 0; | |
1da177e4 LT |
1078 | |
1079 | msbp = msb; | |
1080 | rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; | |
1081 | ||
1b040712 | 1082 | /* calculate deltas */ |
45c34141 DC |
1083 | if (tp->t_blk_res > 0) |
1084 | blkdelta = tp->t_blk_res; | |
45c34141 DC |
1085 | if ((tp->t_fdblocks_delta != 0) && |
1086 | (xfs_sb_version_haslazysbcount(&mp->m_sb) || | |
1087 | (tp->t_flags & XFS_TRANS_SB_DIRTY))) | |
1088 | blkdelta += tp->t_fdblocks_delta; | |
1089 | ||
45c34141 DC |
1090 | if (tp->t_rtx_res > 0) |
1091 | rtxdelta = tp->t_rtx_res; | |
45c34141 DC |
1092 | if ((tp->t_frextents_delta != 0) && |
1093 | (tp->t_flags & XFS_TRANS_SB_DIRTY)) | |
1094 | rtxdelta += tp->t_frextents_delta; | |
1095 | ||
1b040712 CH |
1096 | if (xfs_sb_version_haslazysbcount(&mp->m_sb) || |
1097 | (tp->t_flags & XFS_TRANS_SB_DIRTY)) { | |
1098 | idelta = tp->t_icount_delta; | |
1099 | ifreedelta = tp->t_ifree_delta; | |
1100 | } | |
1101 | ||
1102 | /* apply the per-cpu counters */ | |
1103 | if (blkdelta) { | |
1104 | error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, | |
1105 | blkdelta, rsvd); | |
1106 | if (error) | |
1107 | goto out; | |
1108 | } | |
1109 | ||
1110 | if (idelta) { | |
1111 | error = xfs_icsb_modify_counters(mp, XFS_SBS_ICOUNT, | |
1112 | idelta, rsvd); | |
1113 | if (error) | |
1114 | goto out_undo_fdblocks; | |
1115 | } | |
1116 | ||
1117 | if (ifreedelta) { | |
1118 | error = xfs_icsb_modify_counters(mp, XFS_SBS_IFREE, | |
1119 | ifreedelta, rsvd); | |
1120 | if (error) | |
1121 | goto out_undo_icount; | |
1122 | } | |
1123 | ||
1124 | /* apply remaining deltas */ | |
45c34141 | 1125 | if (rtxdelta != 0) { |
1da177e4 | 1126 | msbp->msb_field = XFS_SBS_FREXTENTS; |
45c34141 | 1127 | msbp->msb_delta = rtxdelta; |
1da177e4 LT |
1128 | msbp++; |
1129 | } | |
1130 | ||
92821e2b | 1131 | if (tp->t_flags & XFS_TRANS_SB_DIRTY) { |
1da177e4 LT |
1132 | if (tp->t_dblocks_delta != 0) { |
1133 | msbp->msb_field = XFS_SBS_DBLOCKS; | |
20f4ebf2 | 1134 | msbp->msb_delta = tp->t_dblocks_delta; |
1da177e4 LT |
1135 | msbp++; |
1136 | } | |
1137 | if (tp->t_agcount_delta != 0) { | |
1138 | msbp->msb_field = XFS_SBS_AGCOUNT; | |
20f4ebf2 | 1139 | msbp->msb_delta = tp->t_agcount_delta; |
1da177e4 LT |
1140 | msbp++; |
1141 | } | |
1142 | if (tp->t_imaxpct_delta != 0) { | |
1143 | msbp->msb_field = XFS_SBS_IMAX_PCT; | |
20f4ebf2 | 1144 | msbp->msb_delta = tp->t_imaxpct_delta; |
1da177e4 LT |
1145 | msbp++; |
1146 | } | |
1147 | if (tp->t_rextsize_delta != 0) { | |
1148 | msbp->msb_field = XFS_SBS_REXTSIZE; | |
20f4ebf2 | 1149 | msbp->msb_delta = tp->t_rextsize_delta; |
1da177e4 LT |
1150 | msbp++; |
1151 | } | |
1152 | if (tp->t_rbmblocks_delta != 0) { | |
1153 | msbp->msb_field = XFS_SBS_RBMBLOCKS; | |
20f4ebf2 | 1154 | msbp->msb_delta = tp->t_rbmblocks_delta; |
1da177e4 LT |
1155 | msbp++; |
1156 | } | |
1157 | if (tp->t_rblocks_delta != 0) { | |
1158 | msbp->msb_field = XFS_SBS_RBLOCKS; | |
20f4ebf2 | 1159 | msbp->msb_delta = tp->t_rblocks_delta; |
1da177e4 LT |
1160 | msbp++; |
1161 | } | |
1162 | if (tp->t_rextents_delta != 0) { | |
1163 | msbp->msb_field = XFS_SBS_REXTENTS; | |
20f4ebf2 | 1164 | msbp->msb_delta = tp->t_rextents_delta; |
1da177e4 LT |
1165 | msbp++; |
1166 | } | |
1167 | if (tp->t_rextslog_delta != 0) { | |
1168 | msbp->msb_field = XFS_SBS_REXTSLOG; | |
20f4ebf2 | 1169 | msbp->msb_delta = tp->t_rextslog_delta; |
1da177e4 LT |
1170 | msbp++; |
1171 | } | |
1172 | } | |
1173 | ||
1174 | /* | |
1175 | * If we need to change anything, do it. | |
1176 | */ | |
1177 | if (msbp > msb) { | |
1178 | error = xfs_mod_incore_sb_batch(tp->t_mountp, msb, | |
1179 | (uint)(msbp - msb), rsvd); | |
1b040712 CH |
1180 | if (error) |
1181 | goto out_undo_ifreecount; | |
1da177e4 | 1182 | } |
1b040712 CH |
1183 | |
1184 | return; | |
1185 | ||
1186 | out_undo_ifreecount: | |
1187 | if (ifreedelta) | |
1188 | xfs_icsb_modify_counters(mp, XFS_SBS_IFREE, -ifreedelta, rsvd); | |
1189 | out_undo_icount: | |
1190 | if (idelta) | |
1191 | xfs_icsb_modify_counters(mp, XFS_SBS_ICOUNT, -idelta, rsvd); | |
1192 | out_undo_fdblocks: | |
1193 | if (blkdelta) | |
1194 | xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, -blkdelta, rsvd); | |
1195 | out: | |
1884bd83 | 1196 | ASSERT(error == 0); |
1b040712 | 1197 | return; |
1da177e4 LT |
1198 | } |
1199 | ||
e98c414f CH |
1200 | /* |
1201 | * Add the given log item to the transaction's list of log items. | |
1202 | * | |
1203 | * The log item will now point to its new descriptor with its li_desc field. | |
1204 | */ | |
1205 | void | |
1206 | xfs_trans_add_item( | |
1207 | struct xfs_trans *tp, | |
1208 | struct xfs_log_item *lip) | |
1209 | { | |
1210 | struct xfs_log_item_desc *lidp; | |
1211 | ||
f65020a8 JJ |
1212 | ASSERT(lip->li_mountp == tp->t_mountp); |
1213 | ASSERT(lip->li_ailp == tp->t_mountp->m_ail); | |
e98c414f | 1214 | |
43869706 | 1215 | lidp = kmem_zone_zalloc(xfs_log_item_desc_zone, KM_SLEEP | KM_NOFS); |
e98c414f CH |
1216 | |
1217 | lidp->lid_item = lip; | |
1218 | lidp->lid_flags = 0; | |
e98c414f CH |
1219 | list_add_tail(&lidp->lid_trans, &tp->t_items); |
1220 | ||
1221 | lip->li_desc = lidp; | |
1222 | } | |
1223 | ||
1224 | STATIC void | |
1225 | xfs_trans_free_item_desc( | |
1226 | struct xfs_log_item_desc *lidp) | |
1227 | { | |
1228 | list_del_init(&lidp->lid_trans); | |
1229 | kmem_zone_free(xfs_log_item_desc_zone, lidp); | |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | * Unlink and free the given descriptor. | |
1234 | */ | |
1235 | void | |
1236 | xfs_trans_del_item( | |
1237 | struct xfs_log_item *lip) | |
1238 | { | |
1239 | xfs_trans_free_item_desc(lip->li_desc); | |
1240 | lip->li_desc = NULL; | |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * Unlock all of the items of a transaction and free all the descriptors | |
1245 | * of that transaction. | |
1246 | */ | |
d17c701c | 1247 | void |
e98c414f CH |
1248 | xfs_trans_free_items( |
1249 | struct xfs_trans *tp, | |
1250 | xfs_lsn_t commit_lsn, | |
1251 | int flags) | |
1252 | { | |
1253 | struct xfs_log_item_desc *lidp, *next; | |
1254 | ||
1255 | list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) { | |
1256 | struct xfs_log_item *lip = lidp->lid_item; | |
1257 | ||
1258 | lip->li_desc = NULL; | |
1259 | ||
1260 | if (commit_lsn != NULLCOMMITLSN) | |
1261 | IOP_COMMITTING(lip, commit_lsn); | |
1262 | if (flags & XFS_TRANS_ABORT) | |
1263 | lip->li_flags |= XFS_LI_ABORTED; | |
1264 | IOP_UNLOCK(lip); | |
1265 | ||
1266 | xfs_trans_free_item_desc(lidp); | |
1267 | } | |
1268 | } | |
1269 | ||
0e57f6a3 DC |
1270 | static inline void |
1271 | xfs_log_item_batch_insert( | |
1272 | struct xfs_ail *ailp, | |
1d8c95a3 | 1273 | struct xfs_ail_cursor *cur, |
0e57f6a3 DC |
1274 | struct xfs_log_item **log_items, |
1275 | int nr_items, | |
1276 | xfs_lsn_t commit_lsn) | |
1277 | { | |
1278 | int i; | |
1279 | ||
1280 | spin_lock(&ailp->xa_lock); | |
1281 | /* xfs_trans_ail_update_bulk drops ailp->xa_lock */ | |
1d8c95a3 | 1282 | xfs_trans_ail_update_bulk(ailp, cur, log_items, nr_items, commit_lsn); |
0e57f6a3 DC |
1283 | |
1284 | for (i = 0; i < nr_items; i++) | |
1285 | IOP_UNPIN(log_items[i], 0); | |
1286 | } | |
1287 | ||
1288 | /* | |
1289 | * Bulk operation version of xfs_trans_committed that takes a log vector of | |
1290 | * items to insert into the AIL. This uses bulk AIL insertion techniques to | |
1291 | * minimise lock traffic. | |
e34a314c DC |
1292 | * |
1293 | * If we are called with the aborted flag set, it is because a log write during | |
1294 | * a CIL checkpoint commit has failed. In this case, all the items in the | |
1295 | * checkpoint have already gone through IOP_COMMITED and IOP_UNLOCK, which | |
1296 | * means that checkpoint commit abort handling is treated exactly the same | |
1297 | * as an iclog write error even though we haven't started any IO yet. Hence in | |
1298 | * this case all we need to do is IOP_COMMITTED processing, followed by an | |
1299 | * IOP_UNPIN(aborted) call. | |
1d8c95a3 DC |
1300 | * |
1301 | * The AIL cursor is used to optimise the insert process. If commit_lsn is not | |
1302 | * at the end of the AIL, the insert cursor avoids the need to walk | |
1303 | * the AIL to find the insertion point on every xfs_log_item_batch_insert() | |
1304 | * call. This saves a lot of needless list walking and is a net win, even | |
1305 | * though it slightly increases that amount of AIL lock traffic to set it up | |
1306 | * and tear it down. | |
0e57f6a3 DC |
1307 | */ |
1308 | void | |
1309 | xfs_trans_committed_bulk( | |
1310 | struct xfs_ail *ailp, | |
1311 | struct xfs_log_vec *log_vector, | |
1312 | xfs_lsn_t commit_lsn, | |
1313 | int aborted) | |
1314 | { | |
1315 | #define LOG_ITEM_BATCH_SIZE 32 | |
1316 | struct xfs_log_item *log_items[LOG_ITEM_BATCH_SIZE]; | |
1317 | struct xfs_log_vec *lv; | |
1d8c95a3 | 1318 | struct xfs_ail_cursor cur; |
0e57f6a3 DC |
1319 | int i = 0; |
1320 | ||
1d8c95a3 DC |
1321 | spin_lock(&ailp->xa_lock); |
1322 | xfs_trans_ail_cursor_last(ailp, &cur, commit_lsn); | |
1323 | spin_unlock(&ailp->xa_lock); | |
1324 | ||
0e57f6a3 DC |
1325 | /* unpin all the log items */ |
1326 | for (lv = log_vector; lv; lv = lv->lv_next ) { | |
1327 | struct xfs_log_item *lip = lv->lv_item; | |
1328 | xfs_lsn_t item_lsn; | |
1329 | ||
1330 | if (aborted) | |
1331 | lip->li_flags |= XFS_LI_ABORTED; | |
1332 | item_lsn = IOP_COMMITTED(lip, commit_lsn); | |
1333 | ||
1316d4da | 1334 | /* item_lsn of -1 means the item needs no further processing */ |
0e57f6a3 DC |
1335 | if (XFS_LSN_CMP(item_lsn, (xfs_lsn_t)-1) == 0) |
1336 | continue; | |
1337 | ||
e34a314c DC |
1338 | /* |
1339 | * if we are aborting the operation, no point in inserting the | |
1340 | * object into the AIL as we are in a shutdown situation. | |
1341 | */ | |
1342 | if (aborted) { | |
1343 | ASSERT(XFS_FORCED_SHUTDOWN(ailp->xa_mount)); | |
1344 | IOP_UNPIN(lip, 1); | |
1345 | continue; | |
1346 | } | |
1347 | ||
0e57f6a3 DC |
1348 | if (item_lsn != commit_lsn) { |
1349 | ||
1350 | /* | |
1351 | * Not a bulk update option due to unusual item_lsn. | |
1352 | * Push into AIL immediately, rechecking the lsn once | |
1d8c95a3 DC |
1353 | * we have the ail lock. Then unpin the item. This does |
1354 | * not affect the AIL cursor the bulk insert path is | |
1355 | * using. | |
0e57f6a3 DC |
1356 | */ |
1357 | spin_lock(&ailp->xa_lock); | |
1358 | if (XFS_LSN_CMP(item_lsn, lip->li_lsn) > 0) | |
1359 | xfs_trans_ail_update(ailp, lip, item_lsn); | |
1360 | else | |
1361 | spin_unlock(&ailp->xa_lock); | |
1362 | IOP_UNPIN(lip, 0); | |
1363 | continue; | |
1364 | } | |
1365 | ||
1366 | /* Item is a candidate for bulk AIL insert. */ | |
1367 | log_items[i++] = lv->lv_item; | |
1368 | if (i >= LOG_ITEM_BATCH_SIZE) { | |
1d8c95a3 | 1369 | xfs_log_item_batch_insert(ailp, &cur, log_items, |
0e57f6a3 DC |
1370 | LOG_ITEM_BATCH_SIZE, commit_lsn); |
1371 | i = 0; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | /* make sure we insert the remainder! */ | |
1376 | if (i) | |
1d8c95a3 DC |
1377 | xfs_log_item_batch_insert(ailp, &cur, log_items, i, commit_lsn); |
1378 | ||
1379 | spin_lock(&ailp->xa_lock); | |
1380 | xfs_trans_ail_cursor_done(ailp, &cur); | |
1381 | spin_unlock(&ailp->xa_lock); | |
0e57f6a3 DC |
1382 | } |
1383 | ||
0924378a | 1384 | /* |
b1037058 | 1385 | * Commit the given transaction to the log. |
0924378a DC |
1386 | * |
1387 | * XFS disk error handling mechanism is not based on a typical | |
1388 | * transaction abort mechanism. Logically after the filesystem | |
1389 | * gets marked 'SHUTDOWN', we can't let any new transactions | |
1390 | * be durable - ie. committed to disk - because some metadata might | |
1391 | * be inconsistent. In such cases, this returns an error, and the | |
1392 | * caller may assume that all locked objects joined to the transaction | |
1393 | * have already been unlocked as if the commit had succeeded. | |
1394 | * Do not reference the transaction structure after this call. | |
1395 | */ | |
0924378a | 1396 | int |
b1037058 | 1397 | xfs_trans_commit( |
a3ccd2ca | 1398 | struct xfs_trans *tp, |
b1037058 | 1399 | uint flags) |
0924378a | 1400 | { |
a3ccd2ca | 1401 | struct xfs_mount *mp = tp->t_mountp; |
0924378a | 1402 | xfs_lsn_t commit_lsn = -1; |
a3ccd2ca | 1403 | int error = 0; |
0924378a DC |
1404 | int log_flags = 0; |
1405 | int sync = tp->t_flags & XFS_TRANS_SYNC; | |
0924378a DC |
1406 | |
1407 | /* | |
1408 | * Determine whether this commit is releasing a permanent | |
1409 | * log reservation or not. | |
1410 | */ | |
1411 | if (flags & XFS_TRANS_RELEASE_LOG_RES) { | |
1412 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
1413 | log_flags = XFS_LOG_REL_PERM_RESERV; | |
1414 | } | |
1415 | ||
1416 | /* | |
1417 | * If there is nothing to be logged by the transaction, | |
1418 | * then unlock all of the items associated with the | |
1419 | * transaction and free the transaction structure. | |
1420 | * Also make sure to return any reserved blocks to | |
1421 | * the free pool. | |
1422 | */ | |
a3ccd2ca CH |
1423 | if (!(tp->t_flags & XFS_TRANS_DIRTY)) |
1424 | goto out_unreserve; | |
1425 | ||
1426 | if (XFS_FORCED_SHUTDOWN(mp)) { | |
1427 | error = XFS_ERROR(EIO); | |
1428 | goto out_unreserve; | |
0924378a | 1429 | } |
a3ccd2ca | 1430 | |
0924378a DC |
1431 | ASSERT(tp->t_ticket != NULL); |
1432 | ||
1433 | /* | |
1434 | * If we need to update the superblock, then do it now. | |
1435 | */ | |
1436 | if (tp->t_flags & XFS_TRANS_SB_DIRTY) | |
1437 | xfs_trans_apply_sb_deltas(tp); | |
1438 | xfs_trans_apply_dquot_deltas(tp); | |
1439 | ||
0244b960 | 1440 | error = xfs_log_commit_cil(mp, tp, &commit_lsn, flags); |
0924378a DC |
1441 | if (error == ENOMEM) { |
1442 | xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR); | |
a3ccd2ca CH |
1443 | error = XFS_ERROR(EIO); |
1444 | goto out_unreserve; | |
0924378a | 1445 | } |
1da177e4 | 1446 | |
0244b960 CH |
1447 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1448 | xfs_trans_free(tp); | |
1449 | ||
1da177e4 LT |
1450 | /* |
1451 | * If the transaction needs to be synchronous, then force the | |
1452 | * log out now and wait for it. | |
1453 | */ | |
1454 | if (sync) { | |
f538d4da | 1455 | if (!error) { |
a14a348b | 1456 | error = _xfs_log_force_lsn(mp, commit_lsn, |
b1037058 | 1457 | XFS_LOG_SYNC, NULL); |
f538d4da | 1458 | } |
1da177e4 LT |
1459 | XFS_STATS_INC(xs_trans_sync); |
1460 | } else { | |
1461 | XFS_STATS_INC(xs_trans_async); | |
1462 | } | |
1463 | ||
a3ccd2ca CH |
1464 | return error; |
1465 | ||
1466 | out_unreserve: | |
1467 | xfs_trans_unreserve_and_mod_sb(tp); | |
1468 | ||
1469 | /* | |
1470 | * It is indeed possible for the transaction to be not dirty but | |
1471 | * the dqinfo portion to be. All that means is that we have some | |
1472 | * (non-persistent) quota reservations that need to be unreserved. | |
1473 | */ | |
1474 | xfs_trans_unreserve_and_mod_dquots(tp); | |
1475 | if (tp->t_ticket) { | |
1476 | commit_lsn = xfs_log_done(mp, tp->t_ticket, NULL, log_flags); | |
1477 | if (commit_lsn == -1 && !error) | |
1478 | error = XFS_ERROR(EIO); | |
1479 | } | |
1480 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); | |
71e330b5 | 1481 | xfs_trans_free_items(tp, NULLCOMMITLSN, error ? XFS_TRANS_ABORT : 0); |
a3ccd2ca CH |
1482 | xfs_trans_free(tp); |
1483 | ||
1484 | XFS_STATS_INC(xs_trans_empty); | |
1485 | return error; | |
1da177e4 LT |
1486 | } |
1487 | ||
1da177e4 LT |
1488 | /* |
1489 | * Unlock all of the transaction's items and free the transaction. | |
1490 | * The transaction must not have modified any of its items, because | |
1491 | * there is no way to restore them to their previous state. | |
1492 | * | |
1493 | * If the transaction has made a log reservation, make sure to release | |
1494 | * it as well. | |
1495 | */ | |
1496 | void | |
1497 | xfs_trans_cancel( | |
1498 | xfs_trans_t *tp, | |
1499 | int flags) | |
1500 | { | |
1501 | int log_flags; | |
0733af21 | 1502 | xfs_mount_t *mp = tp->t_mountp; |
1da177e4 LT |
1503 | |
1504 | /* | |
1505 | * See if the caller is being too lazy to figure out if | |
1506 | * the transaction really needs an abort. | |
1507 | */ | |
1508 | if ((flags & XFS_TRANS_ABORT) && !(tp->t_flags & XFS_TRANS_DIRTY)) | |
1509 | flags &= ~XFS_TRANS_ABORT; | |
1510 | /* | |
1511 | * See if the caller is relying on us to shut down the | |
1512 | * filesystem. This happens in paths where we detect | |
1513 | * corruption and decide to give up. | |
1514 | */ | |
60a204f0 | 1515 | if ((tp->t_flags & XFS_TRANS_DIRTY) && !XFS_FORCED_SHUTDOWN(mp)) { |
0733af21 | 1516 | XFS_ERROR_REPORT("xfs_trans_cancel", XFS_ERRLEVEL_LOW, mp); |
7d04a335 | 1517 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
60a204f0 | 1518 | } |
1da177e4 | 1519 | #ifdef DEBUG |
e98c414f CH |
1520 | if (!(flags & XFS_TRANS_ABORT) && !XFS_FORCED_SHUTDOWN(mp)) { |
1521 | struct xfs_log_item_desc *lidp; | |
1522 | ||
1523 | list_for_each_entry(lidp, &tp->t_items, lid_trans) | |
1524 | ASSERT(!(lidp->lid_item->li_type == XFS_LI_EFD)); | |
1da177e4 LT |
1525 | } |
1526 | #endif | |
1527 | xfs_trans_unreserve_and_mod_sb(tp); | |
7d095257 | 1528 | xfs_trans_unreserve_and_mod_dquots(tp); |
1da177e4 LT |
1529 | |
1530 | if (tp->t_ticket) { | |
1531 | if (flags & XFS_TRANS_RELEASE_LOG_RES) { | |
1532 | ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); | |
1533 | log_flags = XFS_LOG_REL_PERM_RESERV; | |
1534 | } else { | |
1535 | log_flags = 0; | |
1536 | } | |
0733af21 | 1537 | xfs_log_done(mp, tp->t_ticket, NULL, log_flags); |
1da177e4 LT |
1538 | } |
1539 | ||
1540 | /* mark this thread as no longer being in a transaction */ | |
59c1b082 | 1541 | current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); |
1da177e4 | 1542 | |
71e330b5 | 1543 | xfs_trans_free_items(tp, NULLCOMMITLSN, flags); |
1da177e4 LT |
1544 | xfs_trans_free(tp); |
1545 | } | |
1546 | ||
322ff6b8 NS |
1547 | /* |
1548 | * Roll from one trans in the sequence of PERMANENT transactions to | |
1549 | * the next: permanent transactions are only flushed out when | |
1550 | * committed with XFS_TRANS_RELEASE_LOG_RES, but we still want as soon | |
1551 | * as possible to let chunks of it go to the log. So we commit the | |
1552 | * chunk we've been working on and get a new transaction to continue. | |
1553 | */ | |
1554 | int | |
1555 | xfs_trans_roll( | |
1556 | struct xfs_trans **tpp, | |
1557 | struct xfs_inode *dp) | |
1558 | { | |
1559 | struct xfs_trans *trans; | |
1560 | unsigned int logres, count; | |
1561 | int error; | |
1562 | ||
1563 | /* | |
1564 | * Ensure that the inode is always logged. | |
1565 | */ | |
1566 | trans = *tpp; | |
1567 | xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE); | |
1568 | ||
1569 | /* | |
1570 | * Copy the critical parameters from one trans to the next. | |
1571 | */ | |
1572 | logres = trans->t_log_res; | |
1573 | count = trans->t_log_count; | |
1574 | *tpp = xfs_trans_dup(trans); | |
1575 | ||
1576 | /* | |
1577 | * Commit the current transaction. | |
1578 | * If this commit failed, then it'd just unlock those items that | |
1579 | * are not marked ihold. That also means that a filesystem shutdown | |
1580 | * is in progress. The caller takes the responsibility to cancel | |
1581 | * the duplicate transaction that gets returned. | |
1582 | */ | |
1583 | error = xfs_trans_commit(trans, 0); | |
1584 | if (error) | |
1585 | return (error); | |
1586 | ||
1587 | trans = *tpp; | |
1588 | ||
cc09c0dc DC |
1589 | /* |
1590 | * transaction commit worked ok so we can drop the extra ticket | |
1591 | * reference that we gained in xfs_trans_dup() | |
1592 | */ | |
1593 | xfs_log_ticket_put(trans->t_ticket); | |
1594 | ||
1595 | ||
322ff6b8 NS |
1596 | /* |
1597 | * Reserve space in the log for th next transaction. | |
1598 | * This also pushes items in the "AIL", the list of logged items, | |
1599 | * out to disk if they are taking up space at the tail of the log | |
1600 | * that we want to use. This requires that either nothing be locked | |
1601 | * across this call, or that anything that is locked be logged in | |
1602 | * the prior and the next transactions. | |
1603 | */ | |
1604 | error = xfs_trans_reserve(trans, 0, logres, 0, | |
1605 | XFS_TRANS_PERM_LOG_RES, count); | |
1606 | /* | |
1607 | * Ensure that the inode is in the new transaction and locked. | |
1608 | */ | |
1609 | if (error) | |
1610 | return error; | |
1611 | ||
ddc3415a | 1612 | xfs_trans_ijoin(trans, dp, 0); |
322ff6b8 NS |
1613 | return 0; |
1614 | } |