Commit | Line | Data |
---|---|---|
a17564f5 KS |
1 | /* |
2 | * dat.c - NILFS disk address translation. | |
3 | * | |
4 | * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | * | |
20 | * Written by Koji Sato <koji@osrg.net>. | |
21 | */ | |
22 | ||
23 | #include <linux/types.h> | |
24 | #include <linux/buffer_head.h> | |
25 | #include <linux/string.h> | |
26 | #include <linux/errno.h> | |
27 | #include "nilfs.h" | |
28 | #include "mdt.h" | |
29 | #include "alloc.h" | |
30 | #include "dat.h" | |
31 | ||
32 | ||
33 | #define NILFS_CNO_MIN ((__u64)1) | |
34 | #define NILFS_CNO_MAX (~(__u64)0) | |
35 | ||
f5974c8f VD |
36 | /** |
37 | * struct nilfs_dat_info - on-memory private data of DAT file | |
38 | * @mi: on-memory private data of metadata file | |
39 | * @palloc_cache: persistent object allocator cache of DAT file | |
40 | * @shadow: shadow map of DAT file | |
41 | */ | |
8908b2f7 RK |
42 | struct nilfs_dat_info { |
43 | struct nilfs_mdt_info mi; | |
44 | struct nilfs_palloc_cache palloc_cache; | |
c1c1d709 | 45 | struct nilfs_shadow_map shadow; |
8908b2f7 RK |
46 | }; |
47 | ||
48 | static inline struct nilfs_dat_info *NILFS_DAT_I(struct inode *dat) | |
49 | { | |
50 | return (struct nilfs_dat_info *)NILFS_MDT(dat); | |
51 | } | |
52 | ||
a17564f5 KS |
53 | static int nilfs_dat_prepare_entry(struct inode *dat, |
54 | struct nilfs_palloc_req *req, int create) | |
55 | { | |
56 | return nilfs_palloc_get_entry_block(dat, req->pr_entry_nr, | |
57 | create, &req->pr_entry_bh); | |
58 | } | |
59 | ||
60 | static void nilfs_dat_commit_entry(struct inode *dat, | |
61 | struct nilfs_palloc_req *req) | |
62 | { | |
5fc7b141 | 63 | mark_buffer_dirty(req->pr_entry_bh); |
a17564f5 KS |
64 | nilfs_mdt_mark_dirty(dat); |
65 | brelse(req->pr_entry_bh); | |
66 | } | |
67 | ||
68 | static void nilfs_dat_abort_entry(struct inode *dat, | |
69 | struct nilfs_palloc_req *req) | |
70 | { | |
71 | brelse(req->pr_entry_bh); | |
72 | } | |
73 | ||
74 | int nilfs_dat_prepare_alloc(struct inode *dat, struct nilfs_palloc_req *req) | |
75 | { | |
76 | int ret; | |
77 | ||
78 | ret = nilfs_palloc_prepare_alloc_entry(dat, req); | |
79 | if (ret < 0) | |
80 | return ret; | |
81 | ||
82 | ret = nilfs_dat_prepare_entry(dat, req, 1); | |
83 | if (ret < 0) | |
84 | nilfs_palloc_abort_alloc_entry(dat, req); | |
85 | ||
86 | return ret; | |
87 | } | |
88 | ||
89 | void nilfs_dat_commit_alloc(struct inode *dat, struct nilfs_palloc_req *req) | |
90 | { | |
91 | struct nilfs_dat_entry *entry; | |
92 | void *kaddr; | |
93 | ||
7b9c0976 | 94 | kaddr = kmap_atomic(req->pr_entry_bh->b_page); |
a17564f5 KS |
95 | entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, |
96 | req->pr_entry_bh, kaddr); | |
97 | entry->de_start = cpu_to_le64(NILFS_CNO_MIN); | |
98 | entry->de_end = cpu_to_le64(NILFS_CNO_MAX); | |
99 | entry->de_blocknr = cpu_to_le64(0); | |
7b9c0976 | 100 | kunmap_atomic(kaddr); |
a17564f5 KS |
101 | |
102 | nilfs_palloc_commit_alloc_entry(dat, req); | |
103 | nilfs_dat_commit_entry(dat, req); | |
104 | } | |
105 | ||
106 | void nilfs_dat_abort_alloc(struct inode *dat, struct nilfs_palloc_req *req) | |
107 | { | |
108 | nilfs_dat_abort_entry(dat, req); | |
109 | nilfs_palloc_abort_alloc_entry(dat, req); | |
110 | } | |
111 | ||
abc0b50b JS |
112 | static void nilfs_dat_commit_free(struct inode *dat, |
113 | struct nilfs_palloc_req *req) | |
a17564f5 KS |
114 | { |
115 | struct nilfs_dat_entry *entry; | |
116 | void *kaddr; | |
117 | ||
7b9c0976 | 118 | kaddr = kmap_atomic(req->pr_entry_bh->b_page); |
a17564f5 KS |
119 | entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, |
120 | req->pr_entry_bh, kaddr); | |
121 | entry->de_start = cpu_to_le64(NILFS_CNO_MIN); | |
122 | entry->de_end = cpu_to_le64(NILFS_CNO_MIN); | |
123 | entry->de_blocknr = cpu_to_le64(0); | |
7b9c0976 | 124 | kunmap_atomic(kaddr); |
a17564f5 KS |
125 | |
126 | nilfs_dat_commit_entry(dat, req); | |
127 | nilfs_palloc_commit_free_entry(dat, req); | |
128 | } | |
129 | ||
a17564f5 KS |
130 | int nilfs_dat_prepare_start(struct inode *dat, struct nilfs_palloc_req *req) |
131 | { | |
132 | int ret; | |
133 | ||
134 | ret = nilfs_dat_prepare_entry(dat, req, 0); | |
1f5abe7e | 135 | WARN_ON(ret == -ENOENT); |
a17564f5 KS |
136 | return ret; |
137 | } | |
138 | ||
139 | void nilfs_dat_commit_start(struct inode *dat, struct nilfs_palloc_req *req, | |
140 | sector_t blocknr) | |
141 | { | |
142 | struct nilfs_dat_entry *entry; | |
143 | void *kaddr; | |
144 | ||
7b9c0976 | 145 | kaddr = kmap_atomic(req->pr_entry_bh->b_page); |
a17564f5 KS |
146 | entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, |
147 | req->pr_entry_bh, kaddr); | |
148 | entry->de_start = cpu_to_le64(nilfs_mdt_cno(dat)); | |
a17564f5 | 149 | entry->de_blocknr = cpu_to_le64(blocknr); |
7b9c0976 | 150 | kunmap_atomic(kaddr); |
a17564f5 KS |
151 | |
152 | nilfs_dat_commit_entry(dat, req); | |
153 | } | |
154 | ||
a17564f5 KS |
155 | int nilfs_dat_prepare_end(struct inode *dat, struct nilfs_palloc_req *req) |
156 | { | |
157 | struct nilfs_dat_entry *entry; | |
a17564f5 KS |
158 | sector_t blocknr; |
159 | void *kaddr; | |
160 | int ret; | |
161 | ||
162 | ret = nilfs_dat_prepare_entry(dat, req, 0); | |
163 | if (ret < 0) { | |
1f5abe7e | 164 | WARN_ON(ret == -ENOENT); |
a17564f5 KS |
165 | return ret; |
166 | } | |
167 | ||
7b9c0976 | 168 | kaddr = kmap_atomic(req->pr_entry_bh->b_page); |
a17564f5 KS |
169 | entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, |
170 | req->pr_entry_bh, kaddr); | |
a17564f5 | 171 | blocknr = le64_to_cpu(entry->de_blocknr); |
7b9c0976 | 172 | kunmap_atomic(kaddr); |
a17564f5 KS |
173 | |
174 | if (blocknr == 0) { | |
175 | ret = nilfs_palloc_prepare_free_entry(dat, req); | |
176 | if (ret < 0) { | |
177 | nilfs_dat_abort_entry(dat, req); | |
178 | return ret; | |
179 | } | |
180 | } | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | void nilfs_dat_commit_end(struct inode *dat, struct nilfs_palloc_req *req, | |
186 | int dead) | |
187 | { | |
188 | struct nilfs_dat_entry *entry; | |
189 | __u64 start, end; | |
190 | sector_t blocknr; | |
191 | void *kaddr; | |
192 | ||
7b9c0976 | 193 | kaddr = kmap_atomic(req->pr_entry_bh->b_page); |
a17564f5 KS |
194 | entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, |
195 | req->pr_entry_bh, kaddr); | |
196 | end = start = le64_to_cpu(entry->de_start); | |
197 | if (!dead) { | |
198 | end = nilfs_mdt_cno(dat); | |
1f5abe7e | 199 | WARN_ON(start > end); |
a17564f5 KS |
200 | } |
201 | entry->de_end = cpu_to_le64(end); | |
202 | blocknr = le64_to_cpu(entry->de_blocknr); | |
7b9c0976 | 203 | kunmap_atomic(kaddr); |
a17564f5 KS |
204 | |
205 | if (blocknr == 0) | |
206 | nilfs_dat_commit_free(dat, req); | |
207 | else | |
208 | nilfs_dat_commit_entry(dat, req); | |
209 | } | |
210 | ||
211 | void nilfs_dat_abort_end(struct inode *dat, struct nilfs_palloc_req *req) | |
212 | { | |
213 | struct nilfs_dat_entry *entry; | |
214 | __u64 start; | |
215 | sector_t blocknr; | |
216 | void *kaddr; | |
217 | ||
7b9c0976 | 218 | kaddr = kmap_atomic(req->pr_entry_bh->b_page); |
a17564f5 KS |
219 | entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr, |
220 | req->pr_entry_bh, kaddr); | |
221 | start = le64_to_cpu(entry->de_start); | |
222 | blocknr = le64_to_cpu(entry->de_blocknr); | |
7b9c0976 | 223 | kunmap_atomic(kaddr); |
a17564f5 KS |
224 | |
225 | if (start == nilfs_mdt_cno(dat) && blocknr == 0) | |
226 | nilfs_palloc_abort_free_entry(dat, req); | |
227 | nilfs_dat_abort_entry(dat, req); | |
228 | } | |
229 | ||
bd8169ef RK |
230 | int nilfs_dat_prepare_update(struct inode *dat, |
231 | struct nilfs_palloc_req *oldreq, | |
232 | struct nilfs_palloc_req *newreq) | |
233 | { | |
234 | int ret; | |
235 | ||
236 | ret = nilfs_dat_prepare_end(dat, oldreq); | |
237 | if (!ret) { | |
238 | ret = nilfs_dat_prepare_alloc(dat, newreq); | |
239 | if (ret < 0) | |
240 | nilfs_dat_abort_end(dat, oldreq); | |
241 | } | |
242 | return ret; | |
243 | } | |
244 | ||
245 | void nilfs_dat_commit_update(struct inode *dat, | |
246 | struct nilfs_palloc_req *oldreq, | |
247 | struct nilfs_palloc_req *newreq, int dead) | |
248 | { | |
249 | nilfs_dat_commit_end(dat, oldreq, dead); | |
250 | nilfs_dat_commit_alloc(dat, newreq); | |
251 | } | |
252 | ||
253 | void nilfs_dat_abort_update(struct inode *dat, | |
254 | struct nilfs_palloc_req *oldreq, | |
255 | struct nilfs_palloc_req *newreq) | |
256 | { | |
257 | nilfs_dat_abort_end(dat, oldreq); | |
258 | nilfs_dat_abort_alloc(dat, newreq); | |
259 | } | |
260 | ||
a17564f5 KS |
261 | /** |
262 | * nilfs_dat_mark_dirty - | |
263 | * @dat: DAT file inode | |
264 | * @vblocknr: virtual block number | |
265 | * | |
266 | * Description: | |
267 | * | |
268 | * Return Value: On success, 0 is returned. On error, one of the following | |
269 | * negative error codes is returned. | |
270 | * | |
271 | * %-EIO - I/O error. | |
272 | * | |
273 | * %-ENOMEM - Insufficient amount of memory available. | |
274 | */ | |
275 | int nilfs_dat_mark_dirty(struct inode *dat, __u64 vblocknr) | |
276 | { | |
277 | struct nilfs_palloc_req req; | |
278 | int ret; | |
279 | ||
280 | req.pr_entry_nr = vblocknr; | |
281 | ret = nilfs_dat_prepare_entry(dat, &req, 0); | |
282 | if (ret == 0) | |
283 | nilfs_dat_commit_entry(dat, &req); | |
284 | return ret; | |
285 | } | |
286 | ||
287 | /** | |
288 | * nilfs_dat_freev - free virtual block numbers | |
289 | * @dat: DAT file inode | |
290 | * @vblocknrs: array of virtual block numbers | |
291 | * @nitems: number of virtual block numbers | |
292 | * | |
293 | * Description: nilfs_dat_freev() frees the virtual block numbers specified by | |
294 | * @vblocknrs and @nitems. | |
295 | * | |
296 | * Return Value: On success, 0 is returned. On error, one of the following | |
7a65004b | 297 | * negative error codes is returned. |
a17564f5 KS |
298 | * |
299 | * %-EIO - I/O error. | |
300 | * | |
301 | * %-ENOMEM - Insufficient amount of memory available. | |
302 | * | |
303 | * %-ENOENT - The virtual block number have not been allocated. | |
304 | */ | |
305 | int nilfs_dat_freev(struct inode *dat, __u64 *vblocknrs, size_t nitems) | |
306 | { | |
307 | return nilfs_palloc_freev(dat, vblocknrs, nitems); | |
308 | } | |
309 | ||
310 | /** | |
311 | * nilfs_dat_move - change a block number | |
312 | * @dat: DAT file inode | |
313 | * @vblocknr: virtual block number | |
314 | * @blocknr: block number | |
315 | * | |
316 | * Description: nilfs_dat_move() changes the block number associated with | |
317 | * @vblocknr to @blocknr. | |
318 | * | |
319 | * Return Value: On success, 0 is returned. On error, one of the following | |
320 | * negative error codes is returned. | |
321 | * | |
322 | * %-EIO - I/O error. | |
323 | * | |
324 | * %-ENOMEM - Insufficient amount of memory available. | |
325 | */ | |
326 | int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr) | |
327 | { | |
328 | struct buffer_head *entry_bh; | |
329 | struct nilfs_dat_entry *entry; | |
330 | void *kaddr; | |
331 | int ret; | |
332 | ||
333 | ret = nilfs_palloc_get_entry_block(dat, vblocknr, 0, &entry_bh); | |
334 | if (ret < 0) | |
335 | return ret; | |
c1c1d709 RK |
336 | |
337 | /* | |
338 | * The given disk block number (blocknr) is not yet written to | |
339 | * the device at this point. | |
340 | * | |
341 | * To prevent nilfs_dat_translate() from returning the | |
f6c26ec5 | 342 | * uncommitted block number, this makes a copy of the entry |
c1c1d709 RK |
343 | * buffer and redirects nilfs_dat_translate() to the copy. |
344 | */ | |
345 | if (!buffer_nilfs_redirected(entry_bh)) { | |
346 | ret = nilfs_mdt_freeze_buffer(dat, entry_bh); | |
347 | if (ret) { | |
348 | brelse(entry_bh); | |
349 | return ret; | |
350 | } | |
351 | } | |
352 | ||
7b9c0976 | 353 | kaddr = kmap_atomic(entry_bh->b_page); |
a17564f5 | 354 | entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr); |
1f5abe7e | 355 | if (unlikely(entry->de_blocknr == cpu_to_le64(0))) { |
a17564f5 KS |
356 | printk(KERN_CRIT "%s: vbn = %llu, [%llu, %llu)\n", __func__, |
357 | (unsigned long long)vblocknr, | |
358 | (unsigned long long)le64_to_cpu(entry->de_start), | |
359 | (unsigned long long)le64_to_cpu(entry->de_end)); | |
7b9c0976 | 360 | kunmap_atomic(kaddr); |
1f5abe7e RK |
361 | brelse(entry_bh); |
362 | return -EINVAL; | |
a17564f5 | 363 | } |
1f5abe7e | 364 | WARN_ON(blocknr == 0); |
a17564f5 | 365 | entry->de_blocknr = cpu_to_le64(blocknr); |
7b9c0976 | 366 | kunmap_atomic(kaddr); |
a17564f5 | 367 | |
5fc7b141 | 368 | mark_buffer_dirty(entry_bh); |
a17564f5 KS |
369 | nilfs_mdt_mark_dirty(dat); |
370 | ||
371 | brelse(entry_bh); | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | /** | |
377 | * nilfs_dat_translate - translate a virtual block number to a block number | |
378 | * @dat: DAT file inode | |
379 | * @vblocknr: virtual block number | |
380 | * @blocknrp: pointer to a block number | |
381 | * | |
382 | * Description: nilfs_dat_translate() maps the virtual block number @vblocknr | |
383 | * to the corresponding block number. | |
384 | * | |
385 | * Return Value: On success, 0 is returned and the block number associated | |
386 | * with @vblocknr is stored in the place pointed by @blocknrp. On error, one | |
387 | * of the following negative error codes is returned. | |
388 | * | |
389 | * %-EIO - I/O error. | |
390 | * | |
391 | * %-ENOMEM - Insufficient amount of memory available. | |
392 | * | |
393 | * %-ENOENT - A block number associated with @vblocknr does not exist. | |
394 | */ | |
395 | int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp) | |
396 | { | |
c1c1d709 | 397 | struct buffer_head *entry_bh, *bh; |
a17564f5 KS |
398 | struct nilfs_dat_entry *entry; |
399 | sector_t blocknr; | |
400 | void *kaddr; | |
401 | int ret; | |
402 | ||
403 | ret = nilfs_palloc_get_entry_block(dat, vblocknr, 0, &entry_bh); | |
404 | if (ret < 0) | |
405 | return ret; | |
406 | ||
c1c1d709 RK |
407 | if (!nilfs_doing_gc() && buffer_nilfs_redirected(entry_bh)) { |
408 | bh = nilfs_mdt_get_frozen_buffer(dat, entry_bh); | |
409 | if (bh) { | |
410 | WARN_ON(!buffer_uptodate(bh)); | |
411 | brelse(entry_bh); | |
412 | entry_bh = bh; | |
413 | } | |
414 | } | |
415 | ||
7b9c0976 | 416 | kaddr = kmap_atomic(entry_bh->b_page); |
a17564f5 KS |
417 | entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr); |
418 | blocknr = le64_to_cpu(entry->de_blocknr); | |
419 | if (blocknr == 0) { | |
420 | ret = -ENOENT; | |
421 | goto out; | |
422 | } | |
086d1764 | 423 | *blocknrp = blocknr; |
a17564f5 KS |
424 | |
425 | out: | |
7b9c0976 | 426 | kunmap_atomic(kaddr); |
a17564f5 KS |
427 | brelse(entry_bh); |
428 | return ret; | |
429 | } | |
430 | ||
003ff182 | 431 | ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned visz, |
a17564f5 KS |
432 | size_t nvi) |
433 | { | |
434 | struct buffer_head *entry_bh; | |
435 | struct nilfs_dat_entry *entry; | |
003ff182 | 436 | struct nilfs_vinfo *vinfo = buf; |
a17564f5 KS |
437 | __u64 first, last; |
438 | void *kaddr; | |
439 | unsigned long entries_per_block = NILFS_MDT(dat)->mi_entries_per_block; | |
440 | int i, j, n, ret; | |
441 | ||
442 | for (i = 0; i < nvi; i += n) { | |
003ff182 | 443 | ret = nilfs_palloc_get_entry_block(dat, vinfo->vi_vblocknr, |
a17564f5 KS |
444 | 0, &entry_bh); |
445 | if (ret < 0) | |
446 | return ret; | |
7b9c0976 | 447 | kaddr = kmap_atomic(entry_bh->b_page); |
a17564f5 | 448 | /* last virtual block number in this block */ |
003ff182 | 449 | first = vinfo->vi_vblocknr; |
a17564f5 KS |
450 | do_div(first, entries_per_block); |
451 | first *= entries_per_block; | |
452 | last = first + entries_per_block - 1; | |
453 | for (j = i, n = 0; | |
003ff182 RK |
454 | j < nvi && vinfo->vi_vblocknr >= first && |
455 | vinfo->vi_vblocknr <= last; | |
456 | j++, n++, vinfo = (void *)vinfo + visz) { | |
a17564f5 | 457 | entry = nilfs_palloc_block_get_entry( |
003ff182 RK |
458 | dat, vinfo->vi_vblocknr, entry_bh, kaddr); |
459 | vinfo->vi_start = le64_to_cpu(entry->de_start); | |
460 | vinfo->vi_end = le64_to_cpu(entry->de_end); | |
461 | vinfo->vi_blocknr = le64_to_cpu(entry->de_blocknr); | |
a17564f5 | 462 | } |
7b9c0976 | 463 | kunmap_atomic(kaddr); |
a17564f5 KS |
464 | brelse(entry_bh); |
465 | } | |
466 | ||
467 | return nvi; | |
468 | } | |
79739565 | 469 | |
8707df38 | 470 | /** |
f1e89c86 RK |
471 | * nilfs_dat_read - read or get dat inode |
472 | * @sb: super block instance | |
79739565 | 473 | * @entry_size: size of a dat entry |
f1e89c86 RK |
474 | * @raw_inode: on-disk dat inode |
475 | * @inodep: buffer to store the inode | |
79739565 | 476 | */ |
f1e89c86 RK |
477 | int nilfs_dat_read(struct super_block *sb, size_t entry_size, |
478 | struct nilfs_inode *raw_inode, struct inode **inodep) | |
79739565 RK |
479 | { |
480 | static struct lock_class_key dat_lock_key; | |
481 | struct inode *dat; | |
8908b2f7 | 482 | struct nilfs_dat_info *di; |
79739565 RK |
483 | int err; |
484 | ||
0ec060d1 RK |
485 | if (entry_size > sb->s_blocksize) { |
486 | printk(KERN_ERR | |
487 | "NILFS: too large DAT entry size: %zu bytes.\n", | |
488 | entry_size); | |
489 | return -EINVAL; | |
490 | } else if (entry_size < NILFS_MIN_DAT_ENTRY_SIZE) { | |
491 | printk(KERN_ERR | |
492 | "NILFS: too small DAT entry size: %zu bytes.\n", | |
493 | entry_size); | |
494 | return -EINVAL; | |
495 | } | |
496 | ||
f1e89c86 RK |
497 | dat = nilfs_iget_locked(sb, NULL, NILFS_DAT_INO); |
498 | if (unlikely(!dat)) | |
499 | return -ENOMEM; | |
500 | if (!(dat->i_state & I_NEW)) | |
501 | goto out; | |
8908b2f7 | 502 | |
f1e89c86 RK |
503 | err = nilfs_mdt_init(dat, NILFS_MDT_GFP, sizeof(*di)); |
504 | if (err) | |
505 | goto failed; | |
506 | ||
507 | err = nilfs_palloc_init_blockgroup(dat, entry_size); | |
508 | if (err) | |
509 | goto failed; | |
510 | ||
511 | di = NILFS_DAT_I(dat); | |
512 | lockdep_set_class(&di->mi.mi_sem, &dat_lock_key); | |
513 | nilfs_palloc_setup_cache(dat, &di->palloc_cache); | |
514 | nilfs_mdt_setup_shadow_map(dat, &di->shadow); | |
515 | ||
516 | err = nilfs_read_inode_common(dat, raw_inode); | |
517 | if (err) | |
518 | goto failed; | |
519 | ||
520 | unlock_new_inode(dat); | |
521 | out: | |
522 | *inodep = dat; | |
523 | return 0; | |
524 | failed: | |
525 | iget_failed(dat); | |
526 | return err; | |
79739565 | 527 | } |