Commit | Line | Data |
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328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
fa60ce2c | 2 | /* |
d659072f TM |
3 | * resize.c |
4 | * | |
5 | * volume resize. | |
6 | * Inspired by ext3/resize.c. | |
7 | * | |
8 | * Copyright (C) 2007 Oracle. All rights reserved. | |
d659072f TM |
9 | */ |
10 | ||
11 | #include <linux/fs.h> | |
12 | #include <linux/types.h> | |
13 | ||
d659072f TM |
14 | #include <cluster/masklog.h> |
15 | ||
16 | #include "ocfs2.h" | |
17 | ||
18 | #include "alloc.h" | |
19 | #include "dlmglue.h" | |
20 | #include "inode.h" | |
21 | #include "journal.h" | |
22 | #include "super.h" | |
23 | #include "sysfile.h" | |
24 | #include "uptodate.h" | |
a5438702 | 25 | #include "ocfs2_trace.h" |
d659072f TM |
26 | |
27 | #include "buffer_head_io.h" | |
28 | #include "suballoc.h" | |
29 | #include "resize.h" | |
30 | ||
31 | /* | |
32 | * Check whether there are new backup superblocks exist | |
33 | * in the last group. If there are some, mark them or clear | |
34 | * them in the bitmap. | |
35 | * | |
36 | * Return how many backups we find in the last group. | |
37 | */ | |
38 | static u16 ocfs2_calc_new_backup_super(struct inode *inode, | |
39 | struct ocfs2_group_desc *gd, | |
d659072f | 40 | u16 cl_cpg, |
5c9ee4cb | 41 | u16 old_bg_clusters, |
d659072f TM |
42 | int set) |
43 | { | |
44 | int i; | |
45 | u16 backups = 0; | |
5c9ee4cb | 46 | u32 cluster, lgd_cluster; |
d659072f TM |
47 | u64 blkno, gd_blkno, lgd_blkno = le64_to_cpu(gd->bg_blkno); |
48 | ||
49 | for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) { | |
50 | blkno = ocfs2_backup_super_blkno(inode->i_sb, i); | |
51 | cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno); | |
52 | ||
53 | gd_blkno = ocfs2_which_cluster_group(inode, cluster); | |
54 | if (gd_blkno < lgd_blkno) | |
55 | continue; | |
56 | else if (gd_blkno > lgd_blkno) | |
57 | break; | |
58 | ||
5c9ee4cb JQ |
59 | /* check if already done backup super */ |
60 | lgd_cluster = ocfs2_blocks_to_clusters(inode->i_sb, lgd_blkno); | |
61 | lgd_cluster += old_bg_clusters; | |
62 | if (lgd_cluster >= cluster) | |
63 | continue; | |
64 | ||
d659072f TM |
65 | if (set) |
66 | ocfs2_set_bit(cluster % cl_cpg, | |
67 | (unsigned long *)gd->bg_bitmap); | |
68 | else | |
69 | ocfs2_clear_bit(cluster % cl_cpg, | |
70 | (unsigned long *)gd->bg_bitmap); | |
71 | backups++; | |
72 | } | |
73 | ||
d659072f TM |
74 | return backups; |
75 | } | |
76 | ||
77 | static int ocfs2_update_last_group_and_inode(handle_t *handle, | |
78 | struct inode *bm_inode, | |
79 | struct buffer_head *bm_bh, | |
80 | struct buffer_head *group_bh, | |
81 | u32 first_new_cluster, | |
82 | int new_clusters) | |
83 | { | |
84 | int ret = 0; | |
85 | struct ocfs2_super *osb = OCFS2_SB(bm_inode->i_sb); | |
86 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bm_bh->b_data; | |
87 | struct ocfs2_chain_list *cl = &fe->id2.i_chain; | |
88 | struct ocfs2_chain_rec *cr; | |
89 | struct ocfs2_group_desc *group; | |
90 | u16 chain, num_bits, backups = 0; | |
91 | u16 cl_bpc = le16_to_cpu(cl->cl_bpc); | |
92 | u16 cl_cpg = le16_to_cpu(cl->cl_cpg); | |
5c9ee4cb | 93 | u16 old_bg_clusters; |
4eb7b93e HZ |
94 | u16 contig_bits; |
95 | __le16 old_bg_contig_free_bits; | |
d659072f | 96 | |
a5438702 TM |
97 | trace_ocfs2_update_last_group_and_inode(new_clusters, |
98 | first_new_cluster); | |
d659072f | 99 | |
0cf2f763 JB |
100 | ret = ocfs2_journal_access_gd(handle, INODE_CACHE(bm_inode), |
101 | group_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
d659072f TM |
102 | if (ret < 0) { |
103 | mlog_errno(ret); | |
104 | goto out; | |
105 | } | |
106 | ||
107 | group = (struct ocfs2_group_desc *)group_bh->b_data; | |
108 | ||
5c9ee4cb | 109 | old_bg_clusters = le16_to_cpu(group->bg_bits) / cl_bpc; |
d659072f TM |
110 | /* update the group first. */ |
111 | num_bits = new_clusters * cl_bpc; | |
112 | le16_add_cpu(&group->bg_bits, num_bits); | |
113 | le16_add_cpu(&group->bg_free_bits_count, num_bits); | |
114 | ||
115 | /* | |
116 | * check whether there are some new backup superblocks exist in | |
117 | * this group and update the group bitmap accordingly. | |
118 | */ | |
119 | if (OCFS2_HAS_COMPAT_FEATURE(osb->sb, | |
120 | OCFS2_FEATURE_COMPAT_BACKUP_SB)) { | |
121 | backups = ocfs2_calc_new_backup_super(bm_inode, | |
122 | group, | |
5c9ee4cb | 123 | cl_cpg, old_bg_clusters, 1); |
d659072f TM |
124 | le16_add_cpu(&group->bg_free_bits_count, -1 * backups); |
125 | } | |
126 | ||
4eb7b93e HZ |
127 | contig_bits = ocfs2_find_max_contig_free_bits(group->bg_bitmap, |
128 | le16_to_cpu(group->bg_bits), 0); | |
129 | old_bg_contig_free_bits = group->bg_contig_free_bits; | |
130 | group->bg_contig_free_bits = cpu_to_le16(contig_bits); | |
131 | ||
ec20cec7 | 132 | ocfs2_journal_dirty(handle, group_bh); |
d659072f TM |
133 | |
134 | /* update the inode accordingly. */ | |
0cf2f763 | 135 | ret = ocfs2_journal_access_di(handle, INODE_CACHE(bm_inode), bm_bh, |
13723d00 | 136 | OCFS2_JOURNAL_ACCESS_WRITE); |
d659072f TM |
137 | if (ret < 0) { |
138 | mlog_errno(ret); | |
139 | goto out_rollback; | |
140 | } | |
141 | ||
142 | chain = le16_to_cpu(group->bg_chain); | |
143 | cr = (&cl->cl_recs[chain]); | |
144 | le32_add_cpu(&cr->c_total, num_bits); | |
145 | le32_add_cpu(&cr->c_free, num_bits); | |
146 | le32_add_cpu(&fe->id1.bitmap1.i_total, num_bits); | |
147 | le32_add_cpu(&fe->i_clusters, new_clusters); | |
148 | ||
149 | if (backups) { | |
150 | le32_add_cpu(&cr->c_free, -1 * backups); | |
151 | le32_add_cpu(&fe->id1.bitmap1.i_used, backups); | |
152 | } | |
153 | ||
154 | spin_lock(&OCFS2_I(bm_inode)->ip_lock); | |
155 | OCFS2_I(bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
17bf1418 | 156 | le64_add_cpu(&fe->i_size, (u64)new_clusters << osb->s_clustersize_bits); |
d659072f TM |
157 | spin_unlock(&OCFS2_I(bm_inode)->ip_lock); |
158 | i_size_write(bm_inode, le64_to_cpu(fe->i_size)); | |
159 | ||
160 | ocfs2_journal_dirty(handle, bm_bh); | |
161 | ||
162 | out_rollback: | |
163 | if (ret < 0) { | |
164 | ocfs2_calc_new_backup_super(bm_inode, | |
165 | group, | |
5c9ee4cb | 166 | cl_cpg, old_bg_clusters, 0); |
d659072f TM |
167 | le16_add_cpu(&group->bg_free_bits_count, backups); |
168 | le16_add_cpu(&group->bg_bits, -1 * num_bits); | |
169 | le16_add_cpu(&group->bg_free_bits_count, -1 * num_bits); | |
4eb7b93e | 170 | group->bg_contig_free_bits = old_bg_contig_free_bits; |
d659072f TM |
171 | } |
172 | out: | |
c1e8d35e TM |
173 | if (ret) |
174 | mlog_errno(ret); | |
d659072f TM |
175 | return ret; |
176 | } | |
177 | ||
178 | static int update_backups(struct inode * inode, u32 clusters, char *data) | |
179 | { | |
180 | int i, ret = 0; | |
181 | u32 cluster; | |
182 | u64 blkno; | |
183 | struct buffer_head *backup = NULL; | |
184 | struct ocfs2_dinode *backup_di = NULL; | |
185 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
186 | ||
187 | /* calculate the real backups we need to update. */ | |
188 | for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) { | |
189 | blkno = ocfs2_backup_super_blkno(inode->i_sb, i); | |
190 | cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno); | |
584dca34 | 191 | if (cluster >= clusters) |
d659072f TM |
192 | break; |
193 | ||
da1e9098 | 194 | ret = ocfs2_read_blocks_sync(osb, blkno, 1, &backup); |
d659072f TM |
195 | if (ret < 0) { |
196 | mlog_errno(ret); | |
197 | break; | |
198 | } | |
199 | ||
200 | memcpy(backup->b_data, data, inode->i_sb->s_blocksize); | |
201 | ||
202 | backup_di = (struct ocfs2_dinode *)backup->b_data; | |
203 | backup_di->i_blkno = cpu_to_le64(blkno); | |
204 | ||
205 | ret = ocfs2_write_super_or_backup(osb, backup); | |
206 | brelse(backup); | |
207 | backup = NULL; | |
208 | if (ret < 0) { | |
209 | mlog_errno(ret); | |
210 | break; | |
211 | } | |
212 | } | |
213 | ||
214 | return ret; | |
215 | } | |
216 | ||
217 | static void ocfs2_update_super_and_backups(struct inode *inode, | |
218 | int new_clusters) | |
219 | { | |
220 | int ret; | |
221 | u32 clusters = 0; | |
222 | struct buffer_head *super_bh = NULL; | |
223 | struct ocfs2_dinode *super_di = NULL; | |
224 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
225 | ||
226 | /* | |
227 | * update the superblock last. | |
228 | * It doesn't matter if the write failed. | |
229 | */ | |
da1e9098 JB |
230 | ret = ocfs2_read_blocks_sync(osb, OCFS2_SUPER_BLOCK_BLKNO, 1, |
231 | &super_bh); | |
d659072f TM |
232 | if (ret < 0) { |
233 | mlog_errno(ret); | |
234 | goto out; | |
235 | } | |
236 | ||
237 | super_di = (struct ocfs2_dinode *)super_bh->b_data; | |
238 | le32_add_cpu(&super_di->i_clusters, new_clusters); | |
239 | clusters = le32_to_cpu(super_di->i_clusters); | |
240 | ||
241 | ret = ocfs2_write_super_or_backup(osb, super_bh); | |
242 | if (ret < 0) { | |
243 | mlog_errno(ret); | |
244 | goto out; | |
245 | } | |
246 | ||
247 | if (OCFS2_HAS_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_COMPAT_BACKUP_SB)) | |
248 | ret = update_backups(inode, clusters, super_bh->b_data); | |
249 | ||
250 | out: | |
2fe5c1d7 | 251 | brelse(super_bh); |
d659072f TM |
252 | if (ret) |
253 | printk(KERN_WARNING "ocfs2: Failed to update super blocks on %s" | |
254 | " during fs resize. This condition is not fatal," | |
255 | " but fsck.ocfs2 should be run to fix it\n", | |
256 | osb->dev_str); | |
257 | return; | |
258 | } | |
259 | ||
260 | /* | |
261 | * Extend the filesystem to the new number of clusters specified. This entry | |
262 | * point is only used to extend the current filesystem to the end of the last | |
263 | * existing group. | |
264 | */ | |
265 | int ocfs2_group_extend(struct inode * inode, int new_clusters) | |
266 | { | |
267 | int ret; | |
268 | handle_t *handle; | |
269 | struct buffer_head *main_bm_bh = NULL; | |
270 | struct buffer_head *group_bh = NULL; | |
271 | struct inode *main_bm_inode = NULL; | |
272 | struct ocfs2_dinode *fe = NULL; | |
273 | struct ocfs2_group_desc *group = NULL; | |
274 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
275 | u16 cl_bpc; | |
276 | u32 first_new_cluster; | |
277 | u64 lgd_blkno; | |
278 | ||
d659072f TM |
279 | if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) |
280 | return -EROFS; | |
281 | ||
282 | if (new_clusters < 0) | |
283 | return -EINVAL; | |
284 | else if (new_clusters == 0) | |
285 | return 0; | |
286 | ||
287 | main_bm_inode = ocfs2_get_system_file_inode(osb, | |
288 | GLOBAL_BITMAP_SYSTEM_INODE, | |
289 | OCFS2_INVALID_SLOT); | |
290 | if (!main_bm_inode) { | |
291 | ret = -EINVAL; | |
292 | mlog_errno(ret); | |
293 | goto out; | |
294 | } | |
295 | ||
5955102c | 296 | inode_lock(main_bm_inode); |
d659072f TM |
297 | |
298 | ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1); | |
299 | if (ret < 0) { | |
300 | mlog_errno(ret); | |
301 | goto out_mutex; | |
302 | } | |
303 | ||
304 | fe = (struct ocfs2_dinode *)main_bm_bh->b_data; | |
305 | ||
10995aa2 JB |
306 | /* main_bm_bh is validated by inode read inside ocfs2_inode_lock(), |
307 | * so any corruption is a code bug. */ | |
308 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); | |
309 | ||
d659072f | 310 | if (le16_to_cpu(fe->id2.i_chain.cl_cpg) != |
8571882c TM |
311 | ocfs2_group_bitmap_size(osb->sb, 0, |
312 | osb->s_feature_incompat) * 8) { | |
d659072f TM |
313 | mlog(ML_ERROR, "The disk is too old and small. " |
314 | "Force to do offline resize."); | |
315 | ret = -EINVAL; | |
316 | goto out_unlock; | |
d659072f TM |
317 | } |
318 | ||
319 | first_new_cluster = le32_to_cpu(fe->i_clusters); | |
320 | lgd_blkno = ocfs2_which_cluster_group(main_bm_inode, | |
321 | first_new_cluster - 1); | |
322 | ||
68f64d47 JB |
323 | ret = ocfs2_read_group_descriptor(main_bm_inode, fe, lgd_blkno, |
324 | &group_bh); | |
d659072f TM |
325 | if (ret < 0) { |
326 | mlog_errno(ret); | |
327 | goto out_unlock; | |
328 | } | |
d659072f TM |
329 | group = (struct ocfs2_group_desc *)group_bh->b_data; |
330 | ||
d659072f TM |
331 | cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc); |
332 | if (le16_to_cpu(group->bg_bits) / cl_bpc + new_clusters > | |
333 | le16_to_cpu(fe->id2.i_chain.cl_cpg)) { | |
334 | ret = -EINVAL; | |
335 | goto out_unlock; | |
336 | } | |
337 | ||
a5438702 TM |
338 | |
339 | trace_ocfs2_group_extend( | |
7909f2bf | 340 | (unsigned long long)le64_to_cpu(group->bg_blkno), new_clusters); |
d659072f TM |
341 | |
342 | handle = ocfs2_start_trans(osb, OCFS2_GROUP_EXTEND_CREDITS); | |
343 | if (IS_ERR(handle)) { | |
344 | mlog_errno(PTR_ERR(handle)); | |
345 | ret = -EINVAL; | |
346 | goto out_unlock; | |
347 | } | |
348 | ||
349 | /* update the last group descriptor and inode. */ | |
350 | ret = ocfs2_update_last_group_and_inode(handle, main_bm_inode, | |
351 | main_bm_bh, group_bh, | |
352 | first_new_cluster, | |
353 | new_clusters); | |
354 | if (ret) { | |
355 | mlog_errno(ret); | |
356 | goto out_commit; | |
357 | } | |
358 | ||
359 | ocfs2_update_super_and_backups(main_bm_inode, new_clusters); | |
360 | ||
361 | out_commit: | |
362 | ocfs2_commit_trans(osb, handle); | |
363 | out_unlock: | |
2fe5c1d7 MF |
364 | brelse(group_bh); |
365 | brelse(main_bm_bh); | |
d659072f TM |
366 | |
367 | ocfs2_inode_unlock(main_bm_inode, 1); | |
368 | ||
369 | out_mutex: | |
5955102c | 370 | inode_unlock(main_bm_inode); |
d659072f TM |
371 | iput(main_bm_inode); |
372 | ||
373 | out: | |
d659072f TM |
374 | return ret; |
375 | } | |
7909f2bf TM |
376 | |
377 | static int ocfs2_check_new_group(struct inode *inode, | |
378 | struct ocfs2_dinode *di, | |
379 | struct ocfs2_new_group_input *input, | |
380 | struct buffer_head *group_bh) | |
381 | { | |
382 | int ret; | |
57e3e797 JB |
383 | struct ocfs2_group_desc *gd = |
384 | (struct ocfs2_group_desc *)group_bh->b_data; | |
7909f2bf | 385 | u16 cl_bpc = le16_to_cpu(di->id2.i_chain.cl_bpc); |
7909f2bf | 386 | |
970e4936 | 387 | ret = ocfs2_check_group_descriptor(inode->i_sb, di, group_bh); |
57e3e797 JB |
388 | if (ret) |
389 | goto out; | |
7909f2bf | 390 | |
57e3e797 JB |
391 | ret = -EINVAL; |
392 | if (le16_to_cpu(gd->bg_chain) != input->chain) | |
7909f2bf TM |
393 | mlog(ML_ERROR, "Group descriptor # %llu has bad chain %u " |
394 | "while input has %u set.\n", | |
395 | (unsigned long long)le64_to_cpu(gd->bg_blkno), | |
396 | le16_to_cpu(gd->bg_chain), input->chain); | |
397 | else if (le16_to_cpu(gd->bg_bits) != input->clusters * cl_bpc) | |
398 | mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but " | |
399 | "input has %u clusters set\n", | |
400 | (unsigned long long)le64_to_cpu(gd->bg_blkno), | |
401 | le16_to_cpu(gd->bg_bits), input->clusters); | |
402 | else if (le16_to_cpu(gd->bg_free_bits_count) != input->frees * cl_bpc) | |
403 | mlog(ML_ERROR, "Group descriptor # %llu has free bit count %u " | |
404 | "but it should have %u set\n", | |
405 | (unsigned long long)le64_to_cpu(gd->bg_blkno), | |
406 | le16_to_cpu(gd->bg_bits), | |
407 | input->frees * cl_bpc); | |
408 | else | |
409 | ret = 0; | |
410 | ||
57e3e797 | 411 | out: |
7909f2bf TM |
412 | return ret; |
413 | } | |
414 | ||
415 | static int ocfs2_verify_group_and_input(struct inode *inode, | |
416 | struct ocfs2_dinode *di, | |
417 | struct ocfs2_new_group_input *input, | |
418 | struct buffer_head *group_bh) | |
419 | { | |
420 | u16 cl_count = le16_to_cpu(di->id2.i_chain.cl_count); | |
421 | u16 cl_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg); | |
422 | u16 next_free = le16_to_cpu(di->id2.i_chain.cl_next_free_rec); | |
423 | u32 cluster = ocfs2_blocks_to_clusters(inode->i_sb, input->group); | |
424 | u32 total_clusters = le32_to_cpu(di->i_clusters); | |
425 | int ret = -EINVAL; | |
426 | ||
427 | if (cluster < total_clusters) | |
428 | mlog(ML_ERROR, "add a group which is in the current volume.\n"); | |
429 | else if (input->chain >= cl_count) | |
430 | mlog(ML_ERROR, "input chain exceeds the limit.\n"); | |
431 | else if (next_free != cl_count && next_free != input->chain) | |
432 | mlog(ML_ERROR, | |
433 | "the add group should be in chain %u\n", next_free); | |
434 | else if (total_clusters + input->clusters < total_clusters) | |
435 | mlog(ML_ERROR, "add group's clusters overflow.\n"); | |
436 | else if (input->clusters > cl_cpg) | |
437 | mlog(ML_ERROR, "the cluster exceeds the maximum of a group\n"); | |
438 | else if (input->frees > input->clusters) | |
439 | mlog(ML_ERROR, "the free cluster exceeds the total clusters\n"); | |
440 | else if (total_clusters % cl_cpg != 0) | |
441 | mlog(ML_ERROR, | |
442 | "the last group isn't full. Use group extend first.\n"); | |
443 | else if (input->group != ocfs2_which_cluster_group(inode, cluster)) | |
444 | mlog(ML_ERROR, "group blkno is invalid\n"); | |
445 | else if ((ret = ocfs2_check_new_group(inode, di, input, group_bh))) | |
446 | mlog(ML_ERROR, "group descriptor check failed.\n"); | |
447 | else | |
448 | ret = 0; | |
449 | ||
450 | return ret; | |
451 | } | |
452 | ||
453 | /* Add a new group descriptor to global_bitmap. */ | |
454 | int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input) | |
455 | { | |
456 | int ret; | |
457 | handle_t *handle; | |
458 | struct buffer_head *main_bm_bh = NULL; | |
459 | struct inode *main_bm_inode = NULL; | |
460 | struct ocfs2_dinode *fe = NULL; | |
461 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
462 | struct buffer_head *group_bh = NULL; | |
463 | struct ocfs2_group_desc *group = NULL; | |
464 | struct ocfs2_chain_list *cl; | |
465 | struct ocfs2_chain_rec *cr; | |
466 | u16 cl_bpc; | |
eedd40e1 | 467 | u64 bg_ptr; |
7909f2bf | 468 | |
7909f2bf TM |
469 | if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) |
470 | return -EROFS; | |
471 | ||
472 | main_bm_inode = ocfs2_get_system_file_inode(osb, | |
473 | GLOBAL_BITMAP_SYSTEM_INODE, | |
474 | OCFS2_INVALID_SLOT); | |
475 | if (!main_bm_inode) { | |
476 | ret = -EINVAL; | |
477 | mlog_errno(ret); | |
478 | goto out; | |
479 | } | |
480 | ||
5955102c | 481 | inode_lock(main_bm_inode); |
7909f2bf TM |
482 | |
483 | ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1); | |
484 | if (ret < 0) { | |
485 | mlog_errno(ret); | |
486 | goto out_mutex; | |
487 | } | |
488 | ||
489 | fe = (struct ocfs2_dinode *)main_bm_bh->b_data; | |
490 | ||
491 | if (le16_to_cpu(fe->id2.i_chain.cl_cpg) != | |
8571882c TM |
492 | ocfs2_group_bitmap_size(osb->sb, 0, |
493 | osb->s_feature_incompat) * 8) { | |
7909f2bf TM |
494 | mlog(ML_ERROR, "The disk is too old and small." |
495 | " Force to do offline resize."); | |
496 | ret = -EINVAL; | |
497 | goto out_unlock; | |
498 | } | |
499 | ||
da1e9098 | 500 | ret = ocfs2_read_blocks_sync(osb, input->group, 1, &group_bh); |
7909f2bf TM |
501 | if (ret < 0) { |
502 | mlog(ML_ERROR, "Can't read the group descriptor # %llu " | |
503 | "from the device.", (unsigned long long)input->group); | |
504 | goto out_unlock; | |
505 | } | |
506 | ||
8cb471e8 | 507 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), group_bh); |
7909f2bf TM |
508 | |
509 | ret = ocfs2_verify_group_and_input(main_bm_inode, fe, input, group_bh); | |
510 | if (ret) { | |
511 | mlog_errno(ret); | |
8abaae8d | 512 | goto out_free_group_bh; |
7909f2bf TM |
513 | } |
514 | ||
a5438702 TM |
515 | trace_ocfs2_group_add((unsigned long long)input->group, |
516 | input->chain, input->clusters, input->frees); | |
7909f2bf TM |
517 | |
518 | handle = ocfs2_start_trans(osb, OCFS2_GROUP_ADD_CREDITS); | |
519 | if (IS_ERR(handle)) { | |
520 | mlog_errno(PTR_ERR(handle)); | |
521 | ret = -EINVAL; | |
8abaae8d | 522 | goto out_free_group_bh; |
7909f2bf TM |
523 | } |
524 | ||
525 | cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc); | |
526 | cl = &fe->id2.i_chain; | |
527 | cr = &cl->cl_recs[input->chain]; | |
528 | ||
0cf2f763 JB |
529 | ret = ocfs2_journal_access_gd(handle, INODE_CACHE(main_bm_inode), |
530 | group_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
7909f2bf TM |
531 | if (ret < 0) { |
532 | mlog_errno(ret); | |
533 | goto out_commit; | |
534 | } | |
535 | ||
536 | group = (struct ocfs2_group_desc *)group_bh->b_data; | |
eedd40e1 | 537 | bg_ptr = le64_to_cpu(group->bg_next_group); |
7909f2bf | 538 | group->bg_next_group = cr->c_blkno; |
ec20cec7 | 539 | ocfs2_journal_dirty(handle, group_bh); |
7909f2bf | 540 | |
0cf2f763 JB |
541 | ret = ocfs2_journal_access_di(handle, INODE_CACHE(main_bm_inode), |
542 | main_bm_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
7909f2bf | 543 | if (ret < 0) { |
eedd40e1 | 544 | group->bg_next_group = cpu_to_le64(bg_ptr); |
7909f2bf TM |
545 | mlog_errno(ret); |
546 | goto out_commit; | |
547 | } | |
548 | ||
549 | if (input->chain == le16_to_cpu(cl->cl_next_free_rec)) { | |
550 | le16_add_cpu(&cl->cl_next_free_rec, 1); | |
551 | memset(cr, 0, sizeof(struct ocfs2_chain_rec)); | |
552 | } | |
553 | ||
4338ab6a | 554 | cr->c_blkno = cpu_to_le64(input->group); |
7909f2bf TM |
555 | le32_add_cpu(&cr->c_total, input->clusters * cl_bpc); |
556 | le32_add_cpu(&cr->c_free, input->frees * cl_bpc); | |
557 | ||
558 | le32_add_cpu(&fe->id1.bitmap1.i_total, input->clusters *cl_bpc); | |
559 | le32_add_cpu(&fe->id1.bitmap1.i_used, | |
560 | (input->clusters - input->frees) * cl_bpc); | |
561 | le32_add_cpu(&fe->i_clusters, input->clusters); | |
562 | ||
563 | ocfs2_journal_dirty(handle, main_bm_bh); | |
564 | ||
565 | spin_lock(&OCFS2_I(main_bm_inode)->ip_lock); | |
566 | OCFS2_I(main_bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
17bf1418 | 567 | le64_add_cpu(&fe->i_size, (u64)input->clusters << osb->s_clustersize_bits); |
7909f2bf TM |
568 | spin_unlock(&OCFS2_I(main_bm_inode)->ip_lock); |
569 | i_size_write(main_bm_inode, le64_to_cpu(fe->i_size)); | |
570 | ||
571 | ocfs2_update_super_and_backups(main_bm_inode, input->clusters); | |
572 | ||
573 | out_commit: | |
574 | ocfs2_commit_trans(osb, handle); | |
8abaae8d YL |
575 | |
576 | out_free_group_bh: | |
2fe5c1d7 | 577 | brelse(group_bh); |
8abaae8d YL |
578 | |
579 | out_unlock: | |
2fe5c1d7 | 580 | brelse(main_bm_bh); |
7909f2bf TM |
581 | |
582 | ocfs2_inode_unlock(main_bm_inode, 1); | |
583 | ||
584 | out_mutex: | |
5955102c | 585 | inode_unlock(main_bm_inode); |
7909f2bf TM |
586 | iput(main_bm_inode); |
587 | ||
588 | out: | |
7909f2bf TM |
589 | return ret; |
590 | } |