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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * file.c | |
5 | * | |
6 | * File open, close, extend, truncate | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
16f7e0fe | 26 | #include <linux/capability.h> |
ccd979bd MF |
27 | #include <linux/fs.h> |
28 | #include <linux/types.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/highmem.h> | |
31 | #include <linux/pagemap.h> | |
32 | #include <linux/uio.h> | |
e2057c5a | 33 | #include <linux/sched.h> |
d6b29d7c | 34 | #include <linux/splice.h> |
7f1a37e3 | 35 | #include <linux/mount.h> |
9517bac6 | 36 | #include <linux/writeback.h> |
385820a3 | 37 | #include <linux/falloc.h> |
ccd979bd MF |
38 | |
39 | #define MLOG_MASK_PREFIX ML_INODE | |
40 | #include <cluster/masklog.h> | |
41 | ||
42 | #include "ocfs2.h" | |
43 | ||
44 | #include "alloc.h" | |
45 | #include "aops.h" | |
46 | #include "dir.h" | |
47 | #include "dlmglue.h" | |
48 | #include "extent_map.h" | |
49 | #include "file.h" | |
50 | #include "sysfile.h" | |
51 | #include "inode.h" | |
ca4d147e | 52 | #include "ioctl.h" |
ccd979bd MF |
53 | #include "journal.h" |
54 | #include "mmap.h" | |
55 | #include "suballoc.h" | |
56 | #include "super.h" | |
57 | ||
58 | #include "buffer_head_io.h" | |
59 | ||
60 | static int ocfs2_sync_inode(struct inode *inode) | |
61 | { | |
62 | filemap_fdatawrite(inode->i_mapping); | |
63 | return sync_mapping_buffers(inode->i_mapping); | |
64 | } | |
65 | ||
66 | static int ocfs2_file_open(struct inode *inode, struct file *file) | |
67 | { | |
68 | int status; | |
69 | int mode = file->f_flags; | |
70 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
71 | ||
72 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", inode, file, | |
d28c9174 | 73 | file->f_path.dentry->d_name.len, file->f_path.dentry->d_name.name); |
ccd979bd MF |
74 | |
75 | spin_lock(&oi->ip_lock); | |
76 | ||
77 | /* Check that the inode hasn't been wiped from disk by another | |
78 | * node. If it hasn't then we're safe as long as we hold the | |
79 | * spin lock until our increment of open count. */ | |
80 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
81 | spin_unlock(&oi->ip_lock); | |
82 | ||
83 | status = -ENOENT; | |
84 | goto leave; | |
85 | } | |
86 | ||
87 | if (mode & O_DIRECT) | |
88 | oi->ip_flags |= OCFS2_INODE_OPEN_DIRECT; | |
89 | ||
90 | oi->ip_open_count++; | |
91 | spin_unlock(&oi->ip_lock); | |
92 | status = 0; | |
93 | leave: | |
94 | mlog_exit(status); | |
95 | return status; | |
96 | } | |
97 | ||
98 | static int ocfs2_file_release(struct inode *inode, struct file *file) | |
99 | { | |
100 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
101 | ||
102 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", inode, file, | |
d28c9174 JS |
103 | file->f_path.dentry->d_name.len, |
104 | file->f_path.dentry->d_name.name); | |
ccd979bd MF |
105 | |
106 | spin_lock(&oi->ip_lock); | |
107 | if (!--oi->ip_open_count) | |
108 | oi->ip_flags &= ~OCFS2_INODE_OPEN_DIRECT; | |
109 | spin_unlock(&oi->ip_lock); | |
110 | ||
111 | mlog_exit(0); | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | static int ocfs2_sync_file(struct file *file, | |
117 | struct dentry *dentry, | |
118 | int datasync) | |
119 | { | |
120 | int err = 0; | |
121 | journal_t *journal; | |
122 | struct inode *inode = dentry->d_inode; | |
123 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
124 | ||
125 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", file, dentry, datasync, | |
126 | dentry->d_name.len, dentry->d_name.name); | |
127 | ||
128 | err = ocfs2_sync_inode(dentry->d_inode); | |
129 | if (err) | |
130 | goto bail; | |
131 | ||
132 | journal = osb->journal->j_journal; | |
133 | err = journal_force_commit(journal); | |
134 | ||
135 | bail: | |
136 | mlog_exit(err); | |
137 | ||
138 | return (err < 0) ? -EIO : 0; | |
139 | } | |
140 | ||
7f1a37e3 TY |
141 | int ocfs2_should_update_atime(struct inode *inode, |
142 | struct vfsmount *vfsmnt) | |
143 | { | |
144 | struct timespec now; | |
145 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
146 | ||
147 | if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) | |
148 | return 0; | |
149 | ||
150 | if ((inode->i_flags & S_NOATIME) || | |
151 | ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))) | |
152 | return 0; | |
153 | ||
6c2aad05 MF |
154 | /* |
155 | * We can be called with no vfsmnt structure - NFSD will | |
156 | * sometimes do this. | |
157 | * | |
158 | * Note that our action here is different than touch_atime() - | |
159 | * if we can't tell whether this is a noatime mount, then we | |
160 | * don't know whether to trust the value of s_atime_quantum. | |
161 | */ | |
162 | if (vfsmnt == NULL) | |
163 | return 0; | |
164 | ||
7f1a37e3 TY |
165 | if ((vfsmnt->mnt_flags & MNT_NOATIME) || |
166 | ((vfsmnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))) | |
167 | return 0; | |
168 | ||
7e913c53 MF |
169 | if (vfsmnt->mnt_flags & MNT_RELATIME) { |
170 | if ((timespec_compare(&inode->i_atime, &inode->i_mtime) <= 0) || | |
171 | (timespec_compare(&inode->i_atime, &inode->i_ctime) <= 0)) | |
172 | return 1; | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
7f1a37e3 TY |
177 | now = CURRENT_TIME; |
178 | if ((now.tv_sec - inode->i_atime.tv_sec <= osb->s_atime_quantum)) | |
179 | return 0; | |
180 | else | |
181 | return 1; | |
182 | } | |
183 | ||
184 | int ocfs2_update_inode_atime(struct inode *inode, | |
185 | struct buffer_head *bh) | |
186 | { | |
187 | int ret; | |
188 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
189 | handle_t *handle; | |
c11e9faf | 190 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) bh->b_data; |
7f1a37e3 TY |
191 | |
192 | mlog_entry_void(); | |
193 | ||
194 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); | |
195 | if (handle == NULL) { | |
196 | ret = -ENOMEM; | |
197 | mlog_errno(ret); | |
198 | goto out; | |
199 | } | |
200 | ||
c11e9faf MF |
201 | ret = ocfs2_journal_access(handle, inode, bh, |
202 | OCFS2_JOURNAL_ACCESS_WRITE); | |
203 | if (ret) { | |
204 | mlog_errno(ret); | |
205 | goto out_commit; | |
206 | } | |
207 | ||
208 | /* | |
209 | * Don't use ocfs2_mark_inode_dirty() here as we don't always | |
210 | * have i_mutex to guard against concurrent changes to other | |
211 | * inode fields. | |
212 | */ | |
7f1a37e3 | 213 | inode->i_atime = CURRENT_TIME; |
c11e9faf MF |
214 | di->i_atime = cpu_to_le64(inode->i_atime.tv_sec); |
215 | di->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
216 | ||
217 | ret = ocfs2_journal_dirty(handle, bh); | |
7f1a37e3 TY |
218 | if (ret < 0) |
219 | mlog_errno(ret); | |
220 | ||
c11e9faf | 221 | out_commit: |
7f1a37e3 TY |
222 | ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle); |
223 | out: | |
224 | mlog_exit(ret); | |
225 | return ret; | |
226 | } | |
227 | ||
6cb129f5 AB |
228 | static int ocfs2_set_inode_size(handle_t *handle, |
229 | struct inode *inode, | |
230 | struct buffer_head *fe_bh, | |
231 | u64 new_i_size) | |
ccd979bd MF |
232 | { |
233 | int status; | |
234 | ||
235 | mlog_entry_void(); | |
236 | i_size_write(inode, new_i_size); | |
8110b073 | 237 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
238 | inode->i_ctime = inode->i_mtime = CURRENT_TIME; |
239 | ||
240 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
241 | if (status < 0) { | |
242 | mlog_errno(status); | |
243 | goto bail; | |
244 | } | |
245 | ||
246 | bail: | |
247 | mlog_exit(status); | |
248 | return status; | |
249 | } | |
250 | ||
251 | static int ocfs2_simple_size_update(struct inode *inode, | |
252 | struct buffer_head *di_bh, | |
253 | u64 new_i_size) | |
254 | { | |
255 | int ret; | |
256 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1fabe148 | 257 | handle_t *handle = NULL; |
ccd979bd | 258 | |
65eff9cc | 259 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
ccd979bd MF |
260 | if (handle == NULL) { |
261 | ret = -ENOMEM; | |
262 | mlog_errno(ret); | |
263 | goto out; | |
264 | } | |
265 | ||
266 | ret = ocfs2_set_inode_size(handle, inode, di_bh, | |
267 | new_i_size); | |
268 | if (ret < 0) | |
269 | mlog_errno(ret); | |
270 | ||
02dc1af4 | 271 | ocfs2_commit_trans(osb, handle); |
ccd979bd MF |
272 | out: |
273 | return ret; | |
274 | } | |
275 | ||
276 | static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb, | |
277 | struct inode *inode, | |
278 | struct buffer_head *fe_bh, | |
279 | u64 new_i_size) | |
280 | { | |
281 | int status; | |
1fabe148 | 282 | handle_t *handle; |
60b11392 | 283 | struct ocfs2_dinode *di; |
35edec1d | 284 | u64 cluster_bytes; |
ccd979bd MF |
285 | |
286 | mlog_entry_void(); | |
287 | ||
288 | /* TODO: This needs to actually orphan the inode in this | |
289 | * transaction. */ | |
290 | ||
65eff9cc | 291 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
ccd979bd MF |
292 | if (IS_ERR(handle)) { |
293 | status = PTR_ERR(handle); | |
294 | mlog_errno(status); | |
295 | goto out; | |
296 | } | |
297 | ||
60b11392 MF |
298 | status = ocfs2_journal_access(handle, inode, fe_bh, |
299 | OCFS2_JOURNAL_ACCESS_WRITE); | |
300 | if (status < 0) { | |
301 | mlog_errno(status); | |
302 | goto out_commit; | |
303 | } | |
304 | ||
305 | /* | |
306 | * Do this before setting i_size. | |
307 | */ | |
35edec1d MF |
308 | cluster_bytes = ocfs2_align_bytes_to_clusters(inode->i_sb, new_i_size); |
309 | status = ocfs2_zero_range_for_truncate(inode, handle, new_i_size, | |
310 | cluster_bytes); | |
60b11392 MF |
311 | if (status) { |
312 | mlog_errno(status); | |
313 | goto out_commit; | |
314 | } | |
315 | ||
316 | i_size_write(inode, new_i_size); | |
60b11392 MF |
317 | inode->i_ctime = inode->i_mtime = CURRENT_TIME; |
318 | ||
319 | di = (struct ocfs2_dinode *) fe_bh->b_data; | |
320 | di->i_size = cpu_to_le64(new_i_size); | |
321 | di->i_ctime = di->i_mtime = cpu_to_le64(inode->i_ctime.tv_sec); | |
322 | di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
323 | ||
324 | status = ocfs2_journal_dirty(handle, fe_bh); | |
ccd979bd MF |
325 | if (status < 0) |
326 | mlog_errno(status); | |
327 | ||
60b11392 | 328 | out_commit: |
02dc1af4 | 329 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 330 | out: |
60b11392 | 331 | |
ccd979bd MF |
332 | mlog_exit(status); |
333 | return status; | |
334 | } | |
335 | ||
336 | static int ocfs2_truncate_file(struct inode *inode, | |
337 | struct buffer_head *di_bh, | |
338 | u64 new_i_size) | |
339 | { | |
340 | int status = 0; | |
341 | struct ocfs2_dinode *fe = NULL; | |
342 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
343 | struct ocfs2_truncate_context *tc = NULL; | |
344 | ||
b0697053 MF |
345 | mlog_entry("(inode = %llu, new_i_size = %llu\n", |
346 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
347 | (unsigned long long)new_i_size); | |
ccd979bd | 348 | |
ccd979bd MF |
349 | fe = (struct ocfs2_dinode *) di_bh->b_data; |
350 | if (!OCFS2_IS_VALID_DINODE(fe)) { | |
351 | OCFS2_RO_ON_INVALID_DINODE(inode->i_sb, fe); | |
352 | status = -EIO; | |
353 | goto bail; | |
354 | } | |
355 | ||
356 | mlog_bug_on_msg(le64_to_cpu(fe->i_size) != i_size_read(inode), | |
b0697053 MF |
357 | "Inode %llu, inode i_size = %lld != di " |
358 | "i_size = %llu, i_flags = 0x%x\n", | |
359 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
ccd979bd | 360 | i_size_read(inode), |
b0697053 MF |
361 | (unsigned long long)le64_to_cpu(fe->i_size), |
362 | le32_to_cpu(fe->i_flags)); | |
ccd979bd MF |
363 | |
364 | if (new_i_size > le64_to_cpu(fe->i_size)) { | |
b0697053 MF |
365 | mlog(0, "asked to truncate file with size (%llu) to size (%llu)!\n", |
366 | (unsigned long long)le64_to_cpu(fe->i_size), | |
367 | (unsigned long long)new_i_size); | |
ccd979bd MF |
368 | status = -EINVAL; |
369 | mlog_errno(status); | |
370 | goto bail; | |
371 | } | |
372 | ||
b0697053 MF |
373 | mlog(0, "inode %llu, i_size = %llu, new_i_size = %llu\n", |
374 | (unsigned long long)le64_to_cpu(fe->i_blkno), | |
375 | (unsigned long long)le64_to_cpu(fe->i_size), | |
376 | (unsigned long long)new_i_size); | |
ccd979bd MF |
377 | |
378 | /* lets handle the simple truncate cases before doing any more | |
379 | * cluster locking. */ | |
380 | if (new_i_size == le64_to_cpu(fe->i_size)) | |
381 | goto bail; | |
382 | ||
2e89b2e4 MF |
383 | down_write(&OCFS2_I(inode)->ip_alloc_sem); |
384 | ||
ab0920ce MF |
385 | /* This forces other nodes to sync and drop their pages. Do |
386 | * this even if we have a truncate without allocation change - | |
387 | * ocfs2 cluster sizes can be much greater than page size, so | |
388 | * we have to truncate them anyway. */ | |
389 | status = ocfs2_data_lock(inode, 1); | |
390 | if (status < 0) { | |
2e89b2e4 MF |
391 | up_write(&OCFS2_I(inode)->ip_alloc_sem); |
392 | ||
ab0920ce MF |
393 | mlog_errno(status); |
394 | goto bail; | |
395 | } | |
ab0920ce | 396 | |
2e89b2e4 MF |
397 | unmap_mapping_range(inode->i_mapping, new_i_size + PAGE_SIZE - 1, 0, 1); |
398 | truncate_inode_pages(inode->i_mapping, new_i_size); | |
399 | ||
1afc32b9 MF |
400 | if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { |
401 | status = ocfs2_truncate_inline(inode, di_bh, new_i_size, | |
402 | i_size_read(inode), 0); | |
403 | if (status) | |
404 | mlog_errno(status); | |
405 | ||
406 | goto bail_unlock_data; | |
407 | } | |
408 | ||
ccd979bd MF |
409 | /* alright, we're going to need to do a full blown alloc size |
410 | * change. Orphan the inode so that recovery can complete the | |
411 | * truncate if necessary. This does the task of marking | |
412 | * i_size. */ | |
413 | status = ocfs2_orphan_for_truncate(osb, inode, di_bh, new_i_size); | |
414 | if (status < 0) { | |
415 | mlog_errno(status); | |
60b11392 | 416 | goto bail_unlock_data; |
ccd979bd MF |
417 | } |
418 | ||
419 | status = ocfs2_prepare_truncate(osb, inode, di_bh, &tc); | |
420 | if (status < 0) { | |
421 | mlog_errno(status); | |
60b11392 | 422 | goto bail_unlock_data; |
ccd979bd MF |
423 | } |
424 | ||
425 | status = ocfs2_commit_truncate(osb, inode, di_bh, tc); | |
426 | if (status < 0) { | |
427 | mlog_errno(status); | |
60b11392 | 428 | goto bail_unlock_data; |
ccd979bd MF |
429 | } |
430 | ||
431 | /* TODO: orphan dir cleanup here. */ | |
60b11392 MF |
432 | bail_unlock_data: |
433 | ocfs2_data_unlock(inode, 1); | |
434 | ||
2e89b2e4 MF |
435 | up_write(&OCFS2_I(inode)->ip_alloc_sem); |
436 | ||
ccd979bd MF |
437 | bail: |
438 | ||
439 | mlog_exit(status); | |
440 | return status; | |
441 | } | |
442 | ||
443 | /* | |
444 | * extend allocation only here. | |
445 | * we'll update all the disk stuff, and oip->alloc_size | |
446 | * | |
447 | * expect stuff to be locked, a transaction started and enough data / | |
448 | * metadata reservations in the contexts. | |
449 | * | |
450 | * Will return -EAGAIN, and a reason if a restart is needed. | |
451 | * If passed in, *reason will always be set, even in error. | |
452 | */ | |
453 | int ocfs2_do_extend_allocation(struct ocfs2_super *osb, | |
454 | struct inode *inode, | |
dcd0538f | 455 | u32 *logical_offset, |
ccd979bd | 456 | u32 clusters_to_add, |
2ae99a60 | 457 | int mark_unwritten, |
ccd979bd | 458 | struct buffer_head *fe_bh, |
1fabe148 | 459 | handle_t *handle, |
ccd979bd MF |
460 | struct ocfs2_alloc_context *data_ac, |
461 | struct ocfs2_alloc_context *meta_ac, | |
462 | enum ocfs2_alloc_restarted *reason_ret) | |
463 | { | |
464 | int status = 0; | |
465 | int free_extents; | |
466 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
467 | enum ocfs2_alloc_restarted reason = RESTART_NONE; | |
468 | u32 bit_off, num_bits; | |
469 | u64 block; | |
2ae99a60 | 470 | u8 flags = 0; |
ccd979bd MF |
471 | |
472 | BUG_ON(!clusters_to_add); | |
473 | ||
2ae99a60 MF |
474 | if (mark_unwritten) |
475 | flags = OCFS2_EXT_UNWRITTEN; | |
476 | ||
ccd979bd MF |
477 | free_extents = ocfs2_num_free_extents(osb, inode, fe); |
478 | if (free_extents < 0) { | |
479 | status = free_extents; | |
480 | mlog_errno(status); | |
481 | goto leave; | |
482 | } | |
483 | ||
484 | /* there are two cases which could cause us to EAGAIN in the | |
485 | * we-need-more-metadata case: | |
486 | * 1) we haven't reserved *any* | |
487 | * 2) we are so fragmented, we've needed to add metadata too | |
488 | * many times. */ | |
489 | if (!free_extents && !meta_ac) { | |
490 | mlog(0, "we haven't reserved any metadata!\n"); | |
491 | status = -EAGAIN; | |
492 | reason = RESTART_META; | |
493 | goto leave; | |
494 | } else if ((!free_extents) | |
495 | && (ocfs2_alloc_context_bits_left(meta_ac) | |
496 | < ocfs2_extend_meta_needed(fe))) { | |
497 | mlog(0, "filesystem is really fragmented...\n"); | |
498 | status = -EAGAIN; | |
499 | reason = RESTART_META; | |
500 | goto leave; | |
501 | } | |
502 | ||
415cb800 MF |
503 | status = __ocfs2_claim_clusters(osb, handle, data_ac, 1, |
504 | clusters_to_add, &bit_off, &num_bits); | |
ccd979bd MF |
505 | if (status < 0) { |
506 | if (status != -ENOSPC) | |
507 | mlog_errno(status); | |
508 | goto leave; | |
509 | } | |
510 | ||
511 | BUG_ON(num_bits > clusters_to_add); | |
512 | ||
513 | /* reserve our write early -- insert_extent may update the inode */ | |
514 | status = ocfs2_journal_access(handle, inode, fe_bh, | |
515 | OCFS2_JOURNAL_ACCESS_WRITE); | |
516 | if (status < 0) { | |
517 | mlog_errno(status); | |
518 | goto leave; | |
519 | } | |
520 | ||
521 | block = ocfs2_clusters_to_blocks(osb->sb, bit_off); | |
b0697053 MF |
522 | mlog(0, "Allocating %u clusters at block %u for inode %llu\n", |
523 | num_bits, bit_off, (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
dcd0538f MF |
524 | status = ocfs2_insert_extent(osb, handle, inode, fe_bh, |
525 | *logical_offset, block, num_bits, | |
2ae99a60 | 526 | flags, meta_ac); |
ccd979bd MF |
527 | if (status < 0) { |
528 | mlog_errno(status); | |
529 | goto leave; | |
530 | } | |
531 | ||
ccd979bd MF |
532 | status = ocfs2_journal_dirty(handle, fe_bh); |
533 | if (status < 0) { | |
534 | mlog_errno(status); | |
535 | goto leave; | |
536 | } | |
537 | ||
538 | clusters_to_add -= num_bits; | |
dcd0538f | 539 | *logical_offset += num_bits; |
ccd979bd MF |
540 | |
541 | if (clusters_to_add) { | |
542 | mlog(0, "need to alloc once more, clusters = %u, wanted = " | |
543 | "%u\n", fe->i_clusters, clusters_to_add); | |
544 | status = -EAGAIN; | |
545 | reason = RESTART_TRANS; | |
546 | } | |
547 | ||
548 | leave: | |
549 | mlog_exit(status); | |
550 | if (reason_ret) | |
551 | *reason_ret = reason; | |
552 | return status; | |
553 | } | |
554 | ||
abf8b156 MF |
555 | /* |
556 | * For a given allocation, determine which allocators will need to be | |
557 | * accessed, and lock them, reserving the appropriate number of bits. | |
558 | * | |
2ae99a60 MF |
559 | * Sparse file systems call this from ocfs2_write_begin_nolock() |
560 | * and ocfs2_allocate_unwritten_extents(). | |
561 | * | |
562 | * File systems which don't support holes call this from | |
563 | * ocfs2_extend_allocation(). | |
abf8b156 | 564 | */ |
9517bac6 | 565 | int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_dinode *di, |
b27b7cbc | 566 | u32 clusters_to_add, u32 extents_to_split, |
9517bac6 MF |
567 | struct ocfs2_alloc_context **data_ac, |
568 | struct ocfs2_alloc_context **meta_ac) | |
abf8b156 | 569 | { |
063c4561 | 570 | int ret = 0, num_free_extents; |
b27b7cbc | 571 | unsigned int max_recs_needed = clusters_to_add + 2 * extents_to_split; |
abf8b156 MF |
572 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
573 | ||
574 | *meta_ac = NULL; | |
063c4561 MF |
575 | if (data_ac) |
576 | *data_ac = NULL; | |
577 | ||
578 | BUG_ON(clusters_to_add != 0 && data_ac == NULL); | |
abf8b156 MF |
579 | |
580 | mlog(0, "extend inode %llu, i_size = %lld, di->i_clusters = %u, " | |
b27b7cbc | 581 | "clusters_to_add = %u, extents_to_split = %u\n", |
abf8b156 | 582 | (unsigned long long)OCFS2_I(inode)->ip_blkno, i_size_read(inode), |
b27b7cbc | 583 | le32_to_cpu(di->i_clusters), clusters_to_add, extents_to_split); |
abf8b156 MF |
584 | |
585 | num_free_extents = ocfs2_num_free_extents(osb, inode, di); | |
586 | if (num_free_extents < 0) { | |
587 | ret = num_free_extents; | |
588 | mlog_errno(ret); | |
589 | goto out; | |
590 | } | |
591 | ||
592 | /* | |
593 | * Sparse allocation file systems need to be more conservative | |
594 | * with reserving room for expansion - the actual allocation | |
595 | * happens while we've got a journal handle open so re-taking | |
596 | * a cluster lock (because we ran out of room for another | |
597 | * extent) will violate ordering rules. | |
598 | * | |
9517bac6 | 599 | * Most of the time we'll only be seeing this 1 cluster at a time |
abf8b156 | 600 | * anyway. |
b27b7cbc MF |
601 | * |
602 | * Always lock for any unwritten extents - we might want to | |
603 | * add blocks during a split. | |
abf8b156 MF |
604 | */ |
605 | if (!num_free_extents || | |
b27b7cbc | 606 | (ocfs2_sparse_alloc(osb) && num_free_extents < max_recs_needed)) { |
abf8b156 MF |
607 | ret = ocfs2_reserve_new_metadata(osb, di, meta_ac); |
608 | if (ret < 0) { | |
609 | if (ret != -ENOSPC) | |
610 | mlog_errno(ret); | |
611 | goto out; | |
612 | } | |
613 | } | |
614 | ||
063c4561 MF |
615 | if (clusters_to_add == 0) |
616 | goto out; | |
617 | ||
abf8b156 MF |
618 | ret = ocfs2_reserve_clusters(osb, clusters_to_add, data_ac); |
619 | if (ret < 0) { | |
620 | if (ret != -ENOSPC) | |
621 | mlog_errno(ret); | |
622 | goto out; | |
623 | } | |
624 | ||
625 | out: | |
626 | if (ret) { | |
627 | if (*meta_ac) { | |
628 | ocfs2_free_alloc_context(*meta_ac); | |
629 | *meta_ac = NULL; | |
630 | } | |
631 | ||
632 | /* | |
633 | * We cannot have an error and a non null *data_ac. | |
634 | */ | |
635 | } | |
636 | ||
637 | return ret; | |
638 | } | |
639 | ||
2ae99a60 MF |
640 | static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start, |
641 | u32 clusters_to_add, int mark_unwritten) | |
ccd979bd MF |
642 | { |
643 | int status = 0; | |
644 | int restart_func = 0; | |
abf8b156 | 645 | int credits; |
2ae99a60 | 646 | u32 prev_clusters; |
ccd979bd MF |
647 | struct buffer_head *bh = NULL; |
648 | struct ocfs2_dinode *fe = NULL; | |
1fabe148 | 649 | handle_t *handle = NULL; |
ccd979bd MF |
650 | struct ocfs2_alloc_context *data_ac = NULL; |
651 | struct ocfs2_alloc_context *meta_ac = NULL; | |
652 | enum ocfs2_alloc_restarted why; | |
653 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
654 | ||
655 | mlog_entry("(clusters_to_add = %u)\n", clusters_to_add); | |
656 | ||
dcd0538f MF |
657 | /* |
658 | * This function only exists for file systems which don't | |
659 | * support holes. | |
660 | */ | |
2ae99a60 | 661 | BUG_ON(mark_unwritten && !ocfs2_sparse_alloc(osb)); |
dcd0538f | 662 | |
ccd979bd MF |
663 | status = ocfs2_read_block(osb, OCFS2_I(inode)->ip_blkno, &bh, |
664 | OCFS2_BH_CACHED, inode); | |
665 | if (status < 0) { | |
666 | mlog_errno(status); | |
667 | goto leave; | |
668 | } | |
669 | ||
670 | fe = (struct ocfs2_dinode *) bh->b_data; | |
671 | if (!OCFS2_IS_VALID_DINODE(fe)) { | |
672 | OCFS2_RO_ON_INVALID_DINODE(inode->i_sb, fe); | |
673 | status = -EIO; | |
674 | goto leave; | |
675 | } | |
676 | ||
677 | restart_all: | |
678 | BUG_ON(le32_to_cpu(fe->i_clusters) != OCFS2_I(inode)->ip_clusters); | |
679 | ||
b27b7cbc | 680 | status = ocfs2_lock_allocators(inode, fe, clusters_to_add, 0, &data_ac, |
9517bac6 MF |
681 | &meta_ac); |
682 | if (status) { | |
683 | mlog_errno(status); | |
684 | goto leave; | |
685 | } | |
686 | ||
ccd979bd | 687 | credits = ocfs2_calc_extend_credits(osb->sb, fe, clusters_to_add); |
65eff9cc | 688 | handle = ocfs2_start_trans(osb, credits); |
ccd979bd MF |
689 | if (IS_ERR(handle)) { |
690 | status = PTR_ERR(handle); | |
691 | handle = NULL; | |
692 | mlog_errno(status); | |
693 | goto leave; | |
694 | } | |
695 | ||
696 | restarted_transaction: | |
697 | /* reserve a write to the file entry early on - that we if we | |
698 | * run out of credits in the allocation path, we can still | |
699 | * update i_size. */ | |
700 | status = ocfs2_journal_access(handle, inode, bh, | |
701 | OCFS2_JOURNAL_ACCESS_WRITE); | |
702 | if (status < 0) { | |
703 | mlog_errno(status); | |
704 | goto leave; | |
705 | } | |
706 | ||
707 | prev_clusters = OCFS2_I(inode)->ip_clusters; | |
708 | ||
709 | status = ocfs2_do_extend_allocation(osb, | |
710 | inode, | |
dcd0538f | 711 | &logical_start, |
ccd979bd | 712 | clusters_to_add, |
2ae99a60 | 713 | mark_unwritten, |
ccd979bd MF |
714 | bh, |
715 | handle, | |
716 | data_ac, | |
717 | meta_ac, | |
718 | &why); | |
719 | if ((status < 0) && (status != -EAGAIN)) { | |
720 | if (status != -ENOSPC) | |
721 | mlog_errno(status); | |
722 | goto leave; | |
723 | } | |
724 | ||
725 | status = ocfs2_journal_dirty(handle, bh); | |
726 | if (status < 0) { | |
727 | mlog_errno(status); | |
728 | goto leave; | |
729 | } | |
730 | ||
731 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
732 | clusters_to_add -= (OCFS2_I(inode)->ip_clusters - prev_clusters); | |
733 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
734 | ||
735 | if (why != RESTART_NONE && clusters_to_add) { | |
736 | if (why == RESTART_META) { | |
737 | mlog(0, "restarting function.\n"); | |
738 | restart_func = 1; | |
739 | } else { | |
740 | BUG_ON(why != RESTART_TRANS); | |
741 | ||
742 | mlog(0, "restarting transaction.\n"); | |
743 | /* TODO: This can be more intelligent. */ | |
744 | credits = ocfs2_calc_extend_credits(osb->sb, | |
745 | fe, | |
746 | clusters_to_add); | |
1fabe148 | 747 | status = ocfs2_extend_trans(handle, credits); |
ccd979bd MF |
748 | if (status < 0) { |
749 | /* handle still has to be committed at | |
750 | * this point. */ | |
751 | status = -ENOMEM; | |
752 | mlog_errno(status); | |
753 | goto leave; | |
754 | } | |
755 | goto restarted_transaction; | |
756 | } | |
757 | } | |
758 | ||
b0697053 | 759 | mlog(0, "fe: i_clusters = %u, i_size=%llu\n", |
1ca1a111 MF |
760 | le32_to_cpu(fe->i_clusters), |
761 | (unsigned long long)le64_to_cpu(fe->i_size)); | |
ccd979bd MF |
762 | mlog(0, "inode: ip_clusters=%u, i_size=%lld\n", |
763 | OCFS2_I(inode)->ip_clusters, i_size_read(inode)); | |
764 | ||
765 | leave: | |
ccd979bd | 766 | if (handle) { |
02dc1af4 | 767 | ocfs2_commit_trans(osb, handle); |
ccd979bd MF |
768 | handle = NULL; |
769 | } | |
770 | if (data_ac) { | |
771 | ocfs2_free_alloc_context(data_ac); | |
772 | data_ac = NULL; | |
773 | } | |
774 | if (meta_ac) { | |
775 | ocfs2_free_alloc_context(meta_ac); | |
776 | meta_ac = NULL; | |
777 | } | |
778 | if ((!status) && restart_func) { | |
779 | restart_func = 0; | |
780 | goto restart_all; | |
781 | } | |
782 | if (bh) { | |
783 | brelse(bh); | |
784 | bh = NULL; | |
785 | } | |
786 | ||
787 | mlog_exit(status); | |
788 | return status; | |
789 | } | |
790 | ||
791 | /* Some parts of this taken from generic_cont_expand, which turned out | |
792 | * to be too fragile to do exactly what we need without us having to | |
53013cba MF |
793 | * worry about recursive locking in ->prepare_write() and |
794 | * ->commit_write(). */ | |
ccd979bd MF |
795 | static int ocfs2_write_zero_page(struct inode *inode, |
796 | u64 size) | |
797 | { | |
798 | struct address_space *mapping = inode->i_mapping; | |
799 | struct page *page; | |
800 | unsigned long index; | |
801 | unsigned int offset; | |
1fabe148 | 802 | handle_t *handle = NULL; |
ccd979bd MF |
803 | int ret; |
804 | ||
805 | offset = (size & (PAGE_CACHE_SIZE-1)); /* Within page */ | |
806 | /* ugh. in prepare/commit_write, if from==to==start of block, we | |
807 | ** skip the prepare. make sure we never send an offset for the start | |
808 | ** of a block | |
809 | */ | |
810 | if ((offset & (inode->i_sb->s_blocksize - 1)) == 0) { | |
811 | offset++; | |
812 | } | |
813 | index = size >> PAGE_CACHE_SHIFT; | |
814 | ||
815 | page = grab_cache_page(mapping, index); | |
816 | if (!page) { | |
817 | ret = -ENOMEM; | |
818 | mlog_errno(ret); | |
819 | goto out; | |
820 | } | |
821 | ||
53013cba | 822 | ret = ocfs2_prepare_write_nolock(inode, page, offset, offset); |
ccd979bd MF |
823 | if (ret < 0) { |
824 | mlog_errno(ret); | |
825 | goto out_unlock; | |
826 | } | |
827 | ||
828 | if (ocfs2_should_order_data(inode)) { | |
829 | handle = ocfs2_start_walk_page_trans(inode, page, offset, | |
830 | offset); | |
831 | if (IS_ERR(handle)) { | |
832 | ret = PTR_ERR(handle); | |
833 | handle = NULL; | |
834 | goto out_unlock; | |
835 | } | |
836 | } | |
837 | ||
838 | /* must not update i_size! */ | |
839 | ret = block_commit_write(page, offset, offset); | |
840 | if (ret < 0) | |
841 | mlog_errno(ret); | |
842 | else | |
843 | ret = 0; | |
844 | ||
845 | if (handle) | |
02dc1af4 | 846 | ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle); |
ccd979bd MF |
847 | out_unlock: |
848 | unlock_page(page); | |
849 | page_cache_release(page); | |
850 | out: | |
851 | return ret; | |
852 | } | |
853 | ||
854 | static int ocfs2_zero_extend(struct inode *inode, | |
855 | u64 zero_to_size) | |
856 | { | |
857 | int ret = 0; | |
858 | u64 start_off; | |
859 | struct super_block *sb = inode->i_sb; | |
860 | ||
861 | start_off = ocfs2_align_bytes_to_blocks(sb, i_size_read(inode)); | |
862 | while (start_off < zero_to_size) { | |
863 | ret = ocfs2_write_zero_page(inode, start_off); | |
864 | if (ret < 0) { | |
865 | mlog_errno(ret); | |
866 | goto out; | |
867 | } | |
868 | ||
869 | start_off += sb->s_blocksize; | |
e2057c5a MF |
870 | |
871 | /* | |
872 | * Very large extends have the potential to lock up | |
873 | * the cpu for extended periods of time. | |
874 | */ | |
875 | cond_resched(); | |
ccd979bd MF |
876 | } |
877 | ||
878 | out: | |
879 | return ret; | |
880 | } | |
881 | ||
65ed39d6 MF |
882 | int ocfs2_extend_no_holes(struct inode *inode, u64 new_i_size, u64 zero_to) |
883 | { | |
884 | int ret; | |
885 | u32 clusters_to_add; | |
886 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
887 | ||
888 | clusters_to_add = ocfs2_clusters_for_bytes(inode->i_sb, new_i_size); | |
889 | if (clusters_to_add < oi->ip_clusters) | |
890 | clusters_to_add = 0; | |
891 | else | |
892 | clusters_to_add -= oi->ip_clusters; | |
893 | ||
894 | if (clusters_to_add) { | |
895 | ret = __ocfs2_extend_allocation(inode, oi->ip_clusters, | |
896 | clusters_to_add, 0); | |
897 | if (ret) { | |
898 | mlog_errno(ret); | |
899 | goto out; | |
900 | } | |
901 | } | |
902 | ||
903 | /* | |
904 | * Call this even if we don't add any clusters to the tree. We | |
905 | * still need to zero the area between the old i_size and the | |
906 | * new i_size. | |
907 | */ | |
908 | ret = ocfs2_zero_extend(inode, zero_to); | |
909 | if (ret < 0) | |
910 | mlog_errno(ret); | |
911 | ||
912 | out: | |
913 | return ret; | |
914 | } | |
915 | ||
ccd979bd MF |
916 | static int ocfs2_extend_file(struct inode *inode, |
917 | struct buffer_head *di_bh, | |
65ed39d6 | 918 | u64 new_i_size) |
ccd979bd | 919 | { |
1afc32b9 MF |
920 | int ret = 0, data_locked = 0; |
921 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
ccd979bd | 922 | |
65ed39d6 | 923 | BUG_ON(!di_bh); |
53013cba | 924 | |
ccd979bd MF |
925 | /* setattr sometimes calls us like this. */ |
926 | if (new_i_size == 0) | |
927 | goto out; | |
928 | ||
929 | if (i_size_read(inode) == new_i_size) | |
930 | goto out; | |
931 | BUG_ON(new_i_size < i_size_read(inode)); | |
932 | ||
1afc32b9 MF |
933 | /* |
934 | * Fall through for converting inline data, even if the fs | |
935 | * supports sparse files. | |
936 | * | |
937 | * The check for inline data here is legal - nobody can add | |
938 | * the feature since we have i_mutex. We must check it again | |
939 | * after acquiring ip_alloc_sem though, as paths like mmap | |
940 | * might have raced us to converting the inode to extents. | |
941 | */ | |
942 | if (!(oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) | |
943 | && ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) | |
3a0782d0 | 944 | goto out_update_size; |
ccd979bd | 945 | |
0effef77 MF |
946 | /* |
947 | * protect the pages that ocfs2_zero_extend is going to be | |
948 | * pulling into the page cache.. we do this before the | |
949 | * metadata extend so that we don't get into the situation | |
950 | * where we've extended the metadata but can't get the data | |
951 | * lock to zero. | |
952 | */ | |
953 | ret = ocfs2_data_lock(inode, 1); | |
954 | if (ret < 0) { | |
955 | mlog_errno(ret); | |
956 | goto out; | |
957 | } | |
1afc32b9 | 958 | data_locked = 1; |
ccd979bd | 959 | |
0effef77 | 960 | /* |
65ed39d6 MF |
961 | * The alloc sem blocks people in read/write from reading our |
962 | * allocation until we're done changing it. We depend on | |
963 | * i_mutex to block other extend/truncate calls while we're | |
964 | * here. | |
0effef77 | 965 | */ |
1afc32b9 MF |
966 | down_write(&oi->ip_alloc_sem); |
967 | ||
968 | if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) { | |
969 | /* | |
970 | * We can optimize small extends by keeping the inodes | |
971 | * inline data. | |
972 | */ | |
973 | if (ocfs2_size_fits_inline_data(di_bh, new_i_size)) { | |
974 | up_write(&oi->ip_alloc_sem); | |
975 | goto out_update_size; | |
976 | } | |
977 | ||
978 | ret = ocfs2_convert_inline_data_to_extents(inode, di_bh); | |
979 | if (ret) { | |
980 | up_write(&oi->ip_alloc_sem); | |
981 | ||
982 | mlog_errno(ret); | |
983 | goto out_unlock; | |
984 | } | |
985 | } | |
986 | ||
987 | if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) | |
988 | ret = ocfs2_extend_no_holes(inode, new_i_size, new_i_size); | |
989 | ||
990 | up_write(&oi->ip_alloc_sem); | |
65ed39d6 | 991 | |
0effef77 MF |
992 | if (ret < 0) { |
993 | mlog_errno(ret); | |
994 | goto out_unlock; | |
53013cba MF |
995 | } |
996 | ||
3a0782d0 | 997 | out_update_size: |
65ed39d6 MF |
998 | ret = ocfs2_simple_size_update(inode, di_bh, new_i_size); |
999 | if (ret < 0) | |
1000 | mlog_errno(ret); | |
ccd979bd | 1001 | |
53013cba | 1002 | out_unlock: |
1afc32b9 | 1003 | if (data_locked) |
3a0782d0 | 1004 | ocfs2_data_unlock(inode, 1); |
53013cba | 1005 | |
ccd979bd MF |
1006 | out: |
1007 | return ret; | |
1008 | } | |
1009 | ||
1010 | int ocfs2_setattr(struct dentry *dentry, struct iattr *attr) | |
1011 | { | |
1012 | int status = 0, size_change; | |
1013 | struct inode *inode = dentry->d_inode; | |
1014 | struct super_block *sb = inode->i_sb; | |
1015 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1016 | struct buffer_head *bh = NULL; | |
1fabe148 | 1017 | handle_t *handle = NULL; |
ccd979bd MF |
1018 | |
1019 | mlog_entry("(0x%p, '%.*s')\n", dentry, | |
1020 | dentry->d_name.len, dentry->d_name.name); | |
1021 | ||
1022 | if (attr->ia_valid & ATTR_MODE) | |
1023 | mlog(0, "mode change: %d\n", attr->ia_mode); | |
1024 | if (attr->ia_valid & ATTR_UID) | |
1025 | mlog(0, "uid change: %d\n", attr->ia_uid); | |
1026 | if (attr->ia_valid & ATTR_GID) | |
1027 | mlog(0, "gid change: %d\n", attr->ia_gid); | |
1028 | if (attr->ia_valid & ATTR_SIZE) | |
1029 | mlog(0, "size change...\n"); | |
1030 | if (attr->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME)) | |
1031 | mlog(0, "time change...\n"); | |
1032 | ||
1033 | #define OCFS2_VALID_ATTRS (ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE \ | |
1034 | | ATTR_GID | ATTR_UID | ATTR_MODE) | |
1035 | if (!(attr->ia_valid & OCFS2_VALID_ATTRS)) { | |
1036 | mlog(0, "can't handle attrs: 0x%x\n", attr->ia_valid); | |
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | status = inode_change_ok(inode, attr); | |
1041 | if (status) | |
1042 | return status; | |
1043 | ||
1044 | size_change = S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_SIZE; | |
1045 | if (size_change) { | |
1046 | status = ocfs2_rw_lock(inode, 1); | |
1047 | if (status < 0) { | |
1048 | mlog_errno(status); | |
1049 | goto bail; | |
1050 | } | |
1051 | } | |
1052 | ||
4bcec184 | 1053 | status = ocfs2_meta_lock(inode, &bh, 1); |
ccd979bd MF |
1054 | if (status < 0) { |
1055 | if (status != -ENOENT) | |
1056 | mlog_errno(status); | |
1057 | goto bail_unlock_rw; | |
1058 | } | |
1059 | ||
1060 | if (size_change && attr->ia_size != i_size_read(inode)) { | |
ce76fd30 MF |
1061 | if (attr->ia_size > sb->s_maxbytes) { |
1062 | status = -EFBIG; | |
1063 | goto bail_unlock; | |
1064 | } | |
1065 | ||
ccd979bd MF |
1066 | if (i_size_read(inode) > attr->ia_size) |
1067 | status = ocfs2_truncate_file(inode, bh, attr->ia_size); | |
1068 | else | |
65ed39d6 | 1069 | status = ocfs2_extend_file(inode, bh, attr->ia_size); |
ccd979bd MF |
1070 | if (status < 0) { |
1071 | if (status != -ENOSPC) | |
1072 | mlog_errno(status); | |
1073 | status = -ENOSPC; | |
1074 | goto bail_unlock; | |
1075 | } | |
1076 | } | |
1077 | ||
65eff9cc | 1078 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
ccd979bd MF |
1079 | if (IS_ERR(handle)) { |
1080 | status = PTR_ERR(handle); | |
1081 | mlog_errno(status); | |
1082 | goto bail_unlock; | |
1083 | } | |
1084 | ||
7307de80 MF |
1085 | /* |
1086 | * This will intentionally not wind up calling vmtruncate(), | |
1087 | * since all the work for a size change has been done above. | |
1088 | * Otherwise, we could get into problems with truncate as | |
1089 | * ip_alloc_sem is used there to protect against i_size | |
1090 | * changes. | |
1091 | */ | |
ccd979bd MF |
1092 | status = inode_setattr(inode, attr); |
1093 | if (status < 0) { | |
1094 | mlog_errno(status); | |
1095 | goto bail_commit; | |
1096 | } | |
1097 | ||
1098 | status = ocfs2_mark_inode_dirty(handle, inode, bh); | |
1099 | if (status < 0) | |
1100 | mlog_errno(status); | |
1101 | ||
1102 | bail_commit: | |
02dc1af4 | 1103 | ocfs2_commit_trans(osb, handle); |
ccd979bd MF |
1104 | bail_unlock: |
1105 | ocfs2_meta_unlock(inode, 1); | |
1106 | bail_unlock_rw: | |
1107 | if (size_change) | |
1108 | ocfs2_rw_unlock(inode, 1); | |
1109 | bail: | |
1110 | if (bh) | |
1111 | brelse(bh); | |
1112 | ||
1113 | mlog_exit(status); | |
1114 | return status; | |
1115 | } | |
1116 | ||
1117 | int ocfs2_getattr(struct vfsmount *mnt, | |
1118 | struct dentry *dentry, | |
1119 | struct kstat *stat) | |
1120 | { | |
1121 | struct inode *inode = dentry->d_inode; | |
1122 | struct super_block *sb = dentry->d_inode->i_sb; | |
1123 | struct ocfs2_super *osb = sb->s_fs_info; | |
1124 | int err; | |
1125 | ||
1126 | mlog_entry_void(); | |
1127 | ||
1128 | err = ocfs2_inode_revalidate(dentry); | |
1129 | if (err) { | |
1130 | if (err != -ENOENT) | |
1131 | mlog_errno(err); | |
1132 | goto bail; | |
1133 | } | |
1134 | ||
1135 | generic_fillattr(inode, stat); | |
1136 | ||
1137 | /* We set the blksize from the cluster size for performance */ | |
1138 | stat->blksize = osb->s_clustersize; | |
1139 | ||
1140 | bail: | |
1141 | mlog_exit(err); | |
1142 | ||
1143 | return err; | |
1144 | } | |
1145 | ||
d38eb8db TY |
1146 | int ocfs2_permission(struct inode *inode, int mask, struct nameidata *nd) |
1147 | { | |
1148 | int ret; | |
1149 | ||
1150 | mlog_entry_void(); | |
1151 | ||
1152 | ret = ocfs2_meta_lock(inode, NULL, 0); | |
1153 | if (ret) { | |
a9f5f707 MF |
1154 | if (ret != -ENOENT) |
1155 | mlog_errno(ret); | |
d38eb8db TY |
1156 | goto out; |
1157 | } | |
1158 | ||
1159 | ret = generic_permission(inode, mask, NULL); | |
d38eb8db TY |
1160 | |
1161 | ocfs2_meta_unlock(inode, 0); | |
1162 | out: | |
1163 | mlog_exit(ret); | |
1164 | return ret; | |
1165 | } | |
1166 | ||
b2580103 MF |
1167 | static int __ocfs2_write_remove_suid(struct inode *inode, |
1168 | struct buffer_head *bh) | |
ccd979bd MF |
1169 | { |
1170 | int ret; | |
1fabe148 | 1171 | handle_t *handle; |
ccd979bd MF |
1172 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
1173 | struct ocfs2_dinode *di; | |
1174 | ||
b0697053 | 1175 | mlog_entry("(Inode %llu, mode 0%o)\n", |
b2580103 | 1176 | (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_mode); |
ccd979bd | 1177 | |
65eff9cc | 1178 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
ccd979bd MF |
1179 | if (handle == NULL) { |
1180 | ret = -ENOMEM; | |
1181 | mlog_errno(ret); | |
1182 | goto out; | |
1183 | } | |
1184 | ||
ccd979bd MF |
1185 | ret = ocfs2_journal_access(handle, inode, bh, |
1186 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1187 | if (ret < 0) { | |
1188 | mlog_errno(ret); | |
b2580103 | 1189 | goto out_trans; |
ccd979bd MF |
1190 | } |
1191 | ||
1192 | inode->i_mode &= ~S_ISUID; | |
1193 | if ((inode->i_mode & S_ISGID) && (inode->i_mode & S_IXGRP)) | |
1194 | inode->i_mode &= ~S_ISGID; | |
1195 | ||
1196 | di = (struct ocfs2_dinode *) bh->b_data; | |
1197 | di->i_mode = cpu_to_le16(inode->i_mode); | |
1198 | ||
1199 | ret = ocfs2_journal_dirty(handle, bh); | |
1200 | if (ret < 0) | |
1201 | mlog_errno(ret); | |
b2580103 | 1202 | |
ccd979bd | 1203 | out_trans: |
02dc1af4 | 1204 | ocfs2_commit_trans(osb, handle); |
ccd979bd MF |
1205 | out: |
1206 | mlog_exit(ret); | |
1207 | return ret; | |
1208 | } | |
1209 | ||
9517bac6 MF |
1210 | /* |
1211 | * Will look for holes and unwritten extents in the range starting at | |
1212 | * pos for count bytes (inclusive). | |
1213 | */ | |
1214 | static int ocfs2_check_range_for_holes(struct inode *inode, loff_t pos, | |
1215 | size_t count) | |
1216 | { | |
1217 | int ret = 0; | |
49cb8d2d | 1218 | unsigned int extent_flags; |
9517bac6 MF |
1219 | u32 cpos, clusters, extent_len, phys_cpos; |
1220 | struct super_block *sb = inode->i_sb; | |
1221 | ||
1222 | cpos = pos >> OCFS2_SB(sb)->s_clustersize_bits; | |
1223 | clusters = ocfs2_clusters_for_bytes(sb, pos + count) - cpos; | |
1224 | ||
1225 | while (clusters) { | |
49cb8d2d MF |
1226 | ret = ocfs2_get_clusters(inode, cpos, &phys_cpos, &extent_len, |
1227 | &extent_flags); | |
9517bac6 MF |
1228 | if (ret < 0) { |
1229 | mlog_errno(ret); | |
1230 | goto out; | |
1231 | } | |
1232 | ||
49cb8d2d | 1233 | if (phys_cpos == 0 || (extent_flags & OCFS2_EXT_UNWRITTEN)) { |
9517bac6 MF |
1234 | ret = 1; |
1235 | break; | |
1236 | } | |
1237 | ||
1238 | if (extent_len > clusters) | |
1239 | extent_len = clusters; | |
1240 | ||
1241 | clusters -= extent_len; | |
1242 | cpos += extent_len; | |
1243 | } | |
1244 | out: | |
1245 | return ret; | |
1246 | } | |
1247 | ||
b2580103 MF |
1248 | static int ocfs2_write_remove_suid(struct inode *inode) |
1249 | { | |
1250 | int ret; | |
1251 | struct buffer_head *bh = NULL; | |
1252 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1253 | ||
1254 | ret = ocfs2_read_block(OCFS2_SB(inode->i_sb), | |
1255 | oi->ip_blkno, &bh, OCFS2_BH_CACHED, inode); | |
1256 | if (ret < 0) { | |
1257 | mlog_errno(ret); | |
1258 | goto out; | |
1259 | } | |
1260 | ||
1261 | ret = __ocfs2_write_remove_suid(inode, bh); | |
1262 | out: | |
1263 | brelse(bh); | |
1264 | return ret; | |
1265 | } | |
1266 | ||
2ae99a60 MF |
1267 | /* |
1268 | * Allocate enough extents to cover the region starting at byte offset | |
1269 | * start for len bytes. Existing extents are skipped, any extents | |
1270 | * added are marked as "unwritten". | |
1271 | */ | |
1272 | static int ocfs2_allocate_unwritten_extents(struct inode *inode, | |
1273 | u64 start, u64 len) | |
1274 | { | |
1275 | int ret; | |
1276 | u32 cpos, phys_cpos, clusters, alloc_size; | |
1afc32b9 MF |
1277 | u64 end = start + len; |
1278 | struct buffer_head *di_bh = NULL; | |
1279 | ||
1280 | if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { | |
1281 | ret = ocfs2_read_block(OCFS2_SB(inode->i_sb), | |
1282 | OCFS2_I(inode)->ip_blkno, &di_bh, | |
1283 | OCFS2_BH_CACHED, inode); | |
1284 | if (ret) { | |
1285 | mlog_errno(ret); | |
1286 | goto out; | |
1287 | } | |
1288 | ||
1289 | /* | |
1290 | * Nothing to do if the requested reservation range | |
1291 | * fits within the inode. | |
1292 | */ | |
1293 | if (ocfs2_size_fits_inline_data(di_bh, end)) | |
1294 | goto out; | |
1295 | ||
1296 | ret = ocfs2_convert_inline_data_to_extents(inode, di_bh); | |
1297 | if (ret) { | |
1298 | mlog_errno(ret); | |
1299 | goto out; | |
1300 | } | |
1301 | } | |
2ae99a60 MF |
1302 | |
1303 | /* | |
1304 | * We consider both start and len to be inclusive. | |
1305 | */ | |
1306 | cpos = start >> OCFS2_SB(inode->i_sb)->s_clustersize_bits; | |
1307 | clusters = ocfs2_clusters_for_bytes(inode->i_sb, start + len); | |
1308 | clusters -= cpos; | |
1309 | ||
1310 | while (clusters) { | |
1311 | ret = ocfs2_get_clusters(inode, cpos, &phys_cpos, | |
1312 | &alloc_size, NULL); | |
1313 | if (ret) { | |
1314 | mlog_errno(ret); | |
1315 | goto out; | |
1316 | } | |
1317 | ||
1318 | /* | |
1319 | * Hole or existing extent len can be arbitrary, so | |
1320 | * cap it to our own allocation request. | |
1321 | */ | |
1322 | if (alloc_size > clusters) | |
1323 | alloc_size = clusters; | |
1324 | ||
1325 | if (phys_cpos) { | |
1326 | /* | |
1327 | * We already have an allocation at this | |
1328 | * region so we can safely skip it. | |
1329 | */ | |
1330 | goto next; | |
1331 | } | |
1332 | ||
1333 | ret = __ocfs2_extend_allocation(inode, cpos, alloc_size, 1); | |
1334 | if (ret) { | |
1335 | if (ret != -ENOSPC) | |
1336 | mlog_errno(ret); | |
1337 | goto out; | |
1338 | } | |
1339 | ||
1340 | next: | |
1341 | cpos += alloc_size; | |
1342 | clusters -= alloc_size; | |
1343 | } | |
1344 | ||
1345 | ret = 0; | |
1346 | out: | |
1afc32b9 MF |
1347 | |
1348 | brelse(di_bh); | |
2ae99a60 MF |
1349 | return ret; |
1350 | } | |
1351 | ||
063c4561 MF |
1352 | static int __ocfs2_remove_inode_range(struct inode *inode, |
1353 | struct buffer_head *di_bh, | |
1354 | u32 cpos, u32 phys_cpos, u32 len, | |
1355 | struct ocfs2_cached_dealloc_ctxt *dealloc) | |
1356 | { | |
1357 | int ret; | |
1358 | u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos); | |
1359 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1360 | struct inode *tl_inode = osb->osb_tl_inode; | |
1361 | handle_t *handle; | |
1362 | struct ocfs2_alloc_context *meta_ac = NULL; | |
1363 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; | |
1364 | ||
1365 | ret = ocfs2_lock_allocators(inode, di, 0, 1, NULL, &meta_ac); | |
1366 | if (ret) { | |
1367 | mlog_errno(ret); | |
1368 | return ret; | |
1369 | } | |
1370 | ||
1371 | mutex_lock(&tl_inode->i_mutex); | |
1372 | ||
1373 | if (ocfs2_truncate_log_needs_flush(osb)) { | |
1374 | ret = __ocfs2_flush_truncate_log(osb); | |
1375 | if (ret < 0) { | |
1376 | mlog_errno(ret); | |
1377 | goto out; | |
1378 | } | |
1379 | } | |
1380 | ||
1381 | handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS); | |
1382 | if (handle == NULL) { | |
1383 | ret = -ENOMEM; | |
1384 | mlog_errno(ret); | |
1385 | goto out; | |
1386 | } | |
1387 | ||
1388 | ret = ocfs2_journal_access(handle, inode, di_bh, | |
1389 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1390 | if (ret) { | |
1391 | mlog_errno(ret); | |
1392 | goto out; | |
1393 | } | |
1394 | ||
1395 | ret = ocfs2_remove_extent(inode, di_bh, cpos, len, handle, meta_ac, | |
1396 | dealloc); | |
1397 | if (ret) { | |
1398 | mlog_errno(ret); | |
1399 | goto out_commit; | |
1400 | } | |
1401 | ||
1402 | OCFS2_I(inode)->ip_clusters -= len; | |
1403 | di->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
1404 | ||
1405 | ret = ocfs2_journal_dirty(handle, di_bh); | |
1406 | if (ret) { | |
1407 | mlog_errno(ret); | |
1408 | goto out_commit; | |
1409 | } | |
1410 | ||
1411 | ret = ocfs2_truncate_log_append(osb, handle, phys_blkno, len); | |
1412 | if (ret) | |
1413 | mlog_errno(ret); | |
1414 | ||
1415 | out_commit: | |
1416 | ocfs2_commit_trans(osb, handle); | |
1417 | out: | |
1418 | mutex_unlock(&tl_inode->i_mutex); | |
1419 | ||
1420 | if (meta_ac) | |
1421 | ocfs2_free_alloc_context(meta_ac); | |
1422 | ||
1423 | return ret; | |
1424 | } | |
1425 | ||
1426 | /* | |
1427 | * Truncate a byte range, avoiding pages within partial clusters. This | |
1428 | * preserves those pages for the zeroing code to write to. | |
1429 | */ | |
1430 | static void ocfs2_truncate_cluster_pages(struct inode *inode, u64 byte_start, | |
1431 | u64 byte_len) | |
1432 | { | |
1433 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1434 | loff_t start, end; | |
1435 | struct address_space *mapping = inode->i_mapping; | |
1436 | ||
1437 | start = (loff_t)ocfs2_align_bytes_to_clusters(inode->i_sb, byte_start); | |
1438 | end = byte_start + byte_len; | |
1439 | end = end & ~(osb->s_clustersize - 1); | |
1440 | ||
1441 | if (start < end) { | |
1442 | unmap_mapping_range(mapping, start, end - start, 0); | |
1443 | truncate_inode_pages_range(mapping, start, end - 1); | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | static int ocfs2_zero_partial_clusters(struct inode *inode, | |
1448 | u64 start, u64 len) | |
1449 | { | |
1450 | int ret = 0; | |
1451 | u64 tmpend, end = start + len; | |
1452 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1453 | unsigned int csize = osb->s_clustersize; | |
1454 | handle_t *handle; | |
1455 | ||
1456 | /* | |
1457 | * The "start" and "end" values are NOT necessarily part of | |
1458 | * the range whose allocation is being deleted. Rather, this | |
1459 | * is what the user passed in with the request. We must zero | |
1460 | * partial clusters here. There's no need to worry about | |
1461 | * physical allocation - the zeroing code knows to skip holes. | |
1462 | */ | |
1463 | mlog(0, "byte start: %llu, end: %llu\n", | |
1464 | (unsigned long long)start, (unsigned long long)end); | |
1465 | ||
1466 | /* | |
1467 | * If both edges are on a cluster boundary then there's no | |
1468 | * zeroing required as the region is part of the allocation to | |
1469 | * be truncated. | |
1470 | */ | |
1471 | if ((start & (csize - 1)) == 0 && (end & (csize - 1)) == 0) | |
1472 | goto out; | |
1473 | ||
1474 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); | |
1475 | if (handle == NULL) { | |
1476 | ret = -ENOMEM; | |
1477 | mlog_errno(ret); | |
1478 | goto out; | |
1479 | } | |
1480 | ||
1481 | /* | |
1482 | * We want to get the byte offset of the end of the 1st cluster. | |
1483 | */ | |
1484 | tmpend = (u64)osb->s_clustersize + (start & ~(osb->s_clustersize - 1)); | |
1485 | if (tmpend > end) | |
1486 | tmpend = end; | |
1487 | ||
1488 | mlog(0, "1st range: start: %llu, tmpend: %llu\n", | |
1489 | (unsigned long long)start, (unsigned long long)tmpend); | |
1490 | ||
1491 | ret = ocfs2_zero_range_for_truncate(inode, handle, start, tmpend); | |
1492 | if (ret) | |
1493 | mlog_errno(ret); | |
1494 | ||
1495 | if (tmpend < end) { | |
1496 | /* | |
1497 | * This may make start and end equal, but the zeroing | |
1498 | * code will skip any work in that case so there's no | |
1499 | * need to catch it up here. | |
1500 | */ | |
1501 | start = end & ~(osb->s_clustersize - 1); | |
1502 | ||
1503 | mlog(0, "2nd range: start: %llu, end: %llu\n", | |
1504 | (unsigned long long)start, (unsigned long long)end); | |
1505 | ||
1506 | ret = ocfs2_zero_range_for_truncate(inode, handle, start, end); | |
1507 | if (ret) | |
1508 | mlog_errno(ret); | |
1509 | } | |
1510 | ||
1511 | ocfs2_commit_trans(osb, handle); | |
1512 | out: | |
1513 | return ret; | |
1514 | } | |
1515 | ||
1516 | static int ocfs2_remove_inode_range(struct inode *inode, | |
1517 | struct buffer_head *di_bh, u64 byte_start, | |
1518 | u64 byte_len) | |
1519 | { | |
1520 | int ret = 0; | |
1521 | u32 trunc_start, trunc_len, cpos, phys_cpos, alloc_size; | |
1522 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1523 | struct ocfs2_cached_dealloc_ctxt dealloc; | |
1524 | ||
1525 | ocfs2_init_dealloc_ctxt(&dealloc); | |
1526 | ||
1527 | if (byte_len == 0) | |
1528 | return 0; | |
1529 | ||
1afc32b9 MF |
1530 | if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { |
1531 | ret = ocfs2_truncate_inline(inode, di_bh, byte_start, | |
1532 | byte_start + byte_len, 1); | |
1533 | if (ret) | |
1534 | mlog_errno(ret); | |
1535 | return ret; | |
1536 | } | |
1537 | ||
063c4561 MF |
1538 | trunc_start = ocfs2_clusters_for_bytes(osb->sb, byte_start); |
1539 | trunc_len = (byte_start + byte_len) >> osb->s_clustersize_bits; | |
1540 | if (trunc_len >= trunc_start) | |
1541 | trunc_len -= trunc_start; | |
1542 | else | |
1543 | trunc_len = 0; | |
1544 | ||
1545 | mlog(0, "Inode: %llu, start: %llu, len: %llu, cstart: %u, clen: %u\n", | |
1546 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1547 | (unsigned long long)byte_start, | |
1548 | (unsigned long long)byte_len, trunc_start, trunc_len); | |
1549 | ||
1550 | ret = ocfs2_zero_partial_clusters(inode, byte_start, byte_len); | |
1551 | if (ret) { | |
1552 | mlog_errno(ret); | |
1553 | goto out; | |
1554 | } | |
1555 | ||
1556 | cpos = trunc_start; | |
1557 | while (trunc_len) { | |
1558 | ret = ocfs2_get_clusters(inode, cpos, &phys_cpos, | |
1559 | &alloc_size, NULL); | |
1560 | if (ret) { | |
1561 | mlog_errno(ret); | |
1562 | goto out; | |
1563 | } | |
1564 | ||
1565 | if (alloc_size > trunc_len) | |
1566 | alloc_size = trunc_len; | |
1567 | ||
1568 | /* Only do work for non-holes */ | |
1569 | if (phys_cpos != 0) { | |
1570 | ret = __ocfs2_remove_inode_range(inode, di_bh, cpos, | |
1571 | phys_cpos, alloc_size, | |
1572 | &dealloc); | |
1573 | if (ret) { | |
1574 | mlog_errno(ret); | |
1575 | goto out; | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | cpos += alloc_size; | |
1580 | trunc_len -= alloc_size; | |
1581 | } | |
1582 | ||
1583 | ocfs2_truncate_cluster_pages(inode, byte_start, byte_len); | |
1584 | ||
1585 | out: | |
1586 | ocfs2_schedule_truncate_log_flush(osb, 1); | |
1587 | ocfs2_run_deallocs(osb, &dealloc); | |
1588 | ||
1589 | return ret; | |
1590 | } | |
1591 | ||
b2580103 MF |
1592 | /* |
1593 | * Parts of this function taken from xfs_change_file_space() | |
1594 | */ | |
385820a3 MF |
1595 | static int __ocfs2_change_file_space(struct file *file, struct inode *inode, |
1596 | loff_t f_pos, unsigned int cmd, | |
1597 | struct ocfs2_space_resv *sr, | |
1598 | int change_size) | |
b2580103 MF |
1599 | { |
1600 | int ret; | |
1601 | s64 llen; | |
385820a3 | 1602 | loff_t size; |
b2580103 MF |
1603 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
1604 | struct buffer_head *di_bh = NULL; | |
1605 | handle_t *handle; | |
a00cce35 | 1606 | unsigned long long max_off = inode->i_sb->s_maxbytes; |
b2580103 | 1607 | |
b2580103 MF |
1608 | if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) |
1609 | return -EROFS; | |
1610 | ||
1611 | mutex_lock(&inode->i_mutex); | |
1612 | ||
1613 | /* | |
1614 | * This prevents concurrent writes on other nodes | |
1615 | */ | |
1616 | ret = ocfs2_rw_lock(inode, 1); | |
1617 | if (ret) { | |
1618 | mlog_errno(ret); | |
1619 | goto out; | |
1620 | } | |
1621 | ||
1622 | ret = ocfs2_meta_lock(inode, &di_bh, 1); | |
1623 | if (ret) { | |
1624 | mlog_errno(ret); | |
1625 | goto out_rw_unlock; | |
1626 | } | |
1627 | ||
1628 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) { | |
1629 | ret = -EPERM; | |
1630 | goto out_meta_unlock; | |
1631 | } | |
1632 | ||
1633 | switch (sr->l_whence) { | |
1634 | case 0: /*SEEK_SET*/ | |
1635 | break; | |
1636 | case 1: /*SEEK_CUR*/ | |
385820a3 | 1637 | sr->l_start += f_pos; |
b2580103 MF |
1638 | break; |
1639 | case 2: /*SEEK_END*/ | |
1640 | sr->l_start += i_size_read(inode); | |
1641 | break; | |
1642 | default: | |
1643 | ret = -EINVAL; | |
1644 | goto out_meta_unlock; | |
1645 | } | |
1646 | sr->l_whence = 0; | |
1647 | ||
1648 | llen = sr->l_len > 0 ? sr->l_len - 1 : sr->l_len; | |
1649 | ||
1650 | if (sr->l_start < 0 | |
1651 | || sr->l_start > max_off | |
1652 | || (sr->l_start + llen) < 0 | |
1653 | || (sr->l_start + llen) > max_off) { | |
1654 | ret = -EINVAL; | |
1655 | goto out_meta_unlock; | |
1656 | } | |
385820a3 | 1657 | size = sr->l_start + sr->l_len; |
b2580103 MF |
1658 | |
1659 | if (cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) { | |
1660 | if (sr->l_len <= 0) { | |
1661 | ret = -EINVAL; | |
1662 | goto out_meta_unlock; | |
1663 | } | |
1664 | } | |
1665 | ||
385820a3 | 1666 | if (file && should_remove_suid(file->f_path.dentry)) { |
b2580103 MF |
1667 | ret = __ocfs2_write_remove_suid(inode, di_bh); |
1668 | if (ret) { | |
1669 | mlog_errno(ret); | |
1670 | goto out_meta_unlock; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | down_write(&OCFS2_I(inode)->ip_alloc_sem); | |
1675 | switch (cmd) { | |
1676 | case OCFS2_IOC_RESVSP: | |
1677 | case OCFS2_IOC_RESVSP64: | |
1678 | /* | |
1679 | * This takes unsigned offsets, but the signed ones we | |
1680 | * pass have been checked against overflow above. | |
1681 | */ | |
1682 | ret = ocfs2_allocate_unwritten_extents(inode, sr->l_start, | |
1683 | sr->l_len); | |
1684 | break; | |
1685 | case OCFS2_IOC_UNRESVSP: | |
1686 | case OCFS2_IOC_UNRESVSP64: | |
1687 | ret = ocfs2_remove_inode_range(inode, di_bh, sr->l_start, | |
1688 | sr->l_len); | |
1689 | break; | |
1690 | default: | |
1691 | ret = -EINVAL; | |
1692 | } | |
1693 | up_write(&OCFS2_I(inode)->ip_alloc_sem); | |
1694 | if (ret) { | |
1695 | mlog_errno(ret); | |
1696 | goto out_meta_unlock; | |
1697 | } | |
1698 | ||
1699 | /* | |
1700 | * We update c/mtime for these changes | |
1701 | */ | |
1702 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); | |
1703 | if (IS_ERR(handle)) { | |
1704 | ret = PTR_ERR(handle); | |
1705 | mlog_errno(ret); | |
1706 | goto out_meta_unlock; | |
1707 | } | |
1708 | ||
385820a3 MF |
1709 | if (change_size && i_size_read(inode) < size) |
1710 | i_size_write(inode, size); | |
1711 | ||
b2580103 MF |
1712 | inode->i_ctime = inode->i_mtime = CURRENT_TIME; |
1713 | ret = ocfs2_mark_inode_dirty(handle, inode, di_bh); | |
1714 | if (ret < 0) | |
1715 | mlog_errno(ret); | |
1716 | ||
1717 | ocfs2_commit_trans(osb, handle); | |
1718 | ||
1719 | out_meta_unlock: | |
1720 | brelse(di_bh); | |
1721 | ocfs2_meta_unlock(inode, 1); | |
1722 | out_rw_unlock: | |
1723 | ocfs2_rw_unlock(inode, 1); | |
1724 | ||
1725 | mutex_unlock(&inode->i_mutex); | |
1726 | out: | |
1727 | return ret; | |
1728 | } | |
1729 | ||
385820a3 MF |
1730 | int ocfs2_change_file_space(struct file *file, unsigned int cmd, |
1731 | struct ocfs2_space_resv *sr) | |
1732 | { | |
1733 | struct inode *inode = file->f_path.dentry->d_inode; | |
1734 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);; | |
1735 | ||
1736 | if ((cmd == OCFS2_IOC_RESVSP || cmd == OCFS2_IOC_RESVSP64) && | |
1737 | !ocfs2_writes_unwritten_extents(osb)) | |
1738 | return -ENOTTY; | |
1739 | else if ((cmd == OCFS2_IOC_UNRESVSP || cmd == OCFS2_IOC_UNRESVSP64) && | |
1740 | !ocfs2_sparse_alloc(osb)) | |
1741 | return -ENOTTY; | |
1742 | ||
1743 | if (!S_ISREG(inode->i_mode)) | |
1744 | return -EINVAL; | |
1745 | ||
1746 | if (!(file->f_mode & FMODE_WRITE)) | |
1747 | return -EBADF; | |
1748 | ||
1749 | return __ocfs2_change_file_space(file, inode, file->f_pos, cmd, sr, 0); | |
1750 | } | |
1751 | ||
1752 | static long ocfs2_fallocate(struct inode *inode, int mode, loff_t offset, | |
1753 | loff_t len) | |
1754 | { | |
1755 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
1756 | struct ocfs2_space_resv sr; | |
1757 | int change_size = 1; | |
1758 | ||
1759 | if (!ocfs2_writes_unwritten_extents(osb)) | |
1760 | return -EOPNOTSUPP; | |
1761 | ||
1762 | if (S_ISDIR(inode->i_mode)) | |
1763 | return -ENODEV; | |
1764 | ||
1765 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1766 | change_size = 0; | |
1767 | ||
1768 | sr.l_whence = 0; | |
1769 | sr.l_start = (s64)offset; | |
1770 | sr.l_len = (s64)len; | |
1771 | ||
1772 | return __ocfs2_change_file_space(NULL, inode, offset, | |
1773 | OCFS2_IOC_RESVSP64, &sr, change_size); | |
1774 | } | |
1775 | ||
8659ac25 TY |
1776 | static int ocfs2_prepare_inode_for_write(struct dentry *dentry, |
1777 | loff_t *ppos, | |
1778 | size_t count, | |
9517bac6 MF |
1779 | int appending, |
1780 | int *direct_io) | |
ccd979bd | 1781 | { |
65ed39d6 | 1782 | int ret = 0, meta_level = 0; |
8659ac25 | 1783 | struct inode *inode = dentry->d_inode; |
65ed39d6 | 1784 | loff_t saved_pos, end; |
ccd979bd | 1785 | |
ccd979bd | 1786 | /* |
65ed39d6 MF |
1787 | * We start with a read level meta lock and only jump to an ex |
1788 | * if we need to make modifications here. | |
ccd979bd | 1789 | */ |
ccd979bd | 1790 | for(;;) { |
4bcec184 | 1791 | ret = ocfs2_meta_lock(inode, NULL, meta_level); |
ccd979bd MF |
1792 | if (ret < 0) { |
1793 | meta_level = -1; | |
1794 | mlog_errno(ret); | |
1795 | goto out; | |
1796 | } | |
1797 | ||
1798 | /* Clear suid / sgid if necessary. We do this here | |
1799 | * instead of later in the write path because | |
1800 | * remove_suid() calls ->setattr without any hint that | |
1801 | * we may have already done our cluster locking. Since | |
1802 | * ocfs2_setattr() *must* take cluster locks to | |
1803 | * proceeed, this will lead us to recursively lock the | |
1804 | * inode. There's also the dinode i_size state which | |
1805 | * can be lost via setattr during extending writes (we | |
1806 | * set inode->i_size at the end of a write. */ | |
8659ac25 | 1807 | if (should_remove_suid(dentry)) { |
ccd979bd MF |
1808 | if (meta_level == 0) { |
1809 | ocfs2_meta_unlock(inode, meta_level); | |
1810 | meta_level = 1; | |
1811 | continue; | |
1812 | } | |
1813 | ||
1814 | ret = ocfs2_write_remove_suid(inode); | |
1815 | if (ret < 0) { | |
1816 | mlog_errno(ret); | |
8659ac25 | 1817 | goto out_unlock; |
ccd979bd MF |
1818 | } |
1819 | } | |
1820 | ||
1821 | /* work on a copy of ppos until we're sure that we won't have | |
1822 | * to recalculate it due to relocking. */ | |
8659ac25 | 1823 | if (appending) { |
ccd979bd MF |
1824 | saved_pos = i_size_read(inode); |
1825 | mlog(0, "O_APPEND: inode->i_size=%llu\n", saved_pos); | |
1826 | } else { | |
8659ac25 | 1827 | saved_pos = *ppos; |
ccd979bd | 1828 | } |
3a0782d0 | 1829 | |
65ed39d6 | 1830 | end = saved_pos + count; |
9517bac6 | 1831 | |
65ed39d6 MF |
1832 | /* |
1833 | * Skip the O_DIRECT checks if we don't need | |
1834 | * them. | |
1835 | */ | |
1836 | if (!direct_io || !(*direct_io)) | |
9517bac6 | 1837 | break; |
9517bac6 | 1838 | |
1afc32b9 MF |
1839 | /* |
1840 | * There's no sane way to do direct writes to an inode | |
1841 | * with inline data. | |
1842 | */ | |
1843 | if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) { | |
1844 | *direct_io = 0; | |
1845 | break; | |
1846 | } | |
1847 | ||
3a0782d0 | 1848 | /* |
65ed39d6 MF |
1849 | * Allowing concurrent direct writes means |
1850 | * i_size changes wouldn't be synchronized, so | |
1851 | * one node could wind up truncating another | |
1852 | * nodes writes. | |
3a0782d0 | 1853 | */ |
65ed39d6 MF |
1854 | if (end > i_size_read(inode)) { |
1855 | *direct_io = 0; | |
ccd979bd | 1856 | break; |
ccd979bd MF |
1857 | } |
1858 | ||
65ed39d6 MF |
1859 | /* |
1860 | * We don't fill holes during direct io, so | |
1861 | * check for them here. If any are found, the | |
1862 | * caller will have to retake some cluster | |
1863 | * locks and initiate the io as buffered. | |
1864 | */ | |
1865 | ret = ocfs2_check_range_for_holes(inode, saved_pos, count); | |
1866 | if (ret == 1) { | |
1867 | *direct_io = 0; | |
1868 | ret = 0; | |
1869 | } else if (ret < 0) | |
1870 | mlog_errno(ret); | |
ccd979bd MF |
1871 | break; |
1872 | } | |
1873 | ||
8659ac25 TY |
1874 | if (appending) |
1875 | *ppos = saved_pos; | |
1876 | ||
1877 | out_unlock: | |
ccd979bd | 1878 | ocfs2_meta_unlock(inode, meta_level); |
8659ac25 TY |
1879 | |
1880 | out: | |
1881 | return ret; | |
1882 | } | |
1883 | ||
1884 | static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, | |
1885 | const struct iovec *iov, | |
1886 | unsigned long nr_segs, | |
1887 | loff_t pos) | |
1888 | { | |
9517bac6 | 1889 | int ret, direct_io, appending, rw_level, have_alloc_sem = 0; |
b6af1bcd | 1890 | int can_do_direct; |
9517bac6 MF |
1891 | ssize_t written = 0; |
1892 | size_t ocount; /* original count */ | |
1893 | size_t count; /* after file limit checks */ | |
9ea2d32f MF |
1894 | loff_t old_size, *ppos = &iocb->ki_pos; |
1895 | u32 old_clusters; | |
9517bac6 MF |
1896 | struct file *file = iocb->ki_filp; |
1897 | struct inode *inode = file->f_path.dentry->d_inode; | |
9ea2d32f | 1898 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
9517bac6 MF |
1899 | |
1900 | mlog_entry("(0x%p, %u, '%.*s')\n", file, | |
8659ac25 | 1901 | (unsigned int)nr_segs, |
9517bac6 MF |
1902 | file->f_path.dentry->d_name.len, |
1903 | file->f_path.dentry->d_name.name); | |
8659ac25 | 1904 | |
8659ac25 TY |
1905 | if (iocb->ki_left == 0) |
1906 | return 0; | |
1907 | ||
9517bac6 MF |
1908 | vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE); |
1909 | ||
1910 | appending = file->f_flags & O_APPEND ? 1 : 0; | |
1911 | direct_io = file->f_flags & O_DIRECT ? 1 : 0; | |
1912 | ||
8659ac25 | 1913 | mutex_lock(&inode->i_mutex); |
9517bac6 MF |
1914 | |
1915 | relock: | |
8659ac25 | 1916 | /* to match setattr's i_mutex -> i_alloc_sem -> rw_lock ordering */ |
9517bac6 | 1917 | if (direct_io) { |
8659ac25 | 1918 | down_read(&inode->i_alloc_sem); |
9517bac6 | 1919 | have_alloc_sem = 1; |
8659ac25 TY |
1920 | } |
1921 | ||
1922 | /* concurrent O_DIRECT writes are allowed */ | |
9517bac6 | 1923 | rw_level = !direct_io; |
8659ac25 TY |
1924 | ret = ocfs2_rw_lock(inode, rw_level); |
1925 | if (ret < 0) { | |
8659ac25 | 1926 | mlog_errno(ret); |
9517bac6 | 1927 | goto out_sems; |
8659ac25 TY |
1928 | } |
1929 | ||
9517bac6 MF |
1930 | can_do_direct = direct_io; |
1931 | ret = ocfs2_prepare_inode_for_write(file->f_path.dentry, ppos, | |
1932 | iocb->ki_left, appending, | |
1933 | &can_do_direct); | |
8659ac25 TY |
1934 | if (ret < 0) { |
1935 | mlog_errno(ret); | |
1936 | goto out; | |
1937 | } | |
ccd979bd | 1938 | |
9517bac6 MF |
1939 | /* |
1940 | * We can't complete the direct I/O as requested, fall back to | |
1941 | * buffered I/O. | |
1942 | */ | |
1943 | if (direct_io && !can_do_direct) { | |
1944 | ocfs2_rw_unlock(inode, rw_level); | |
1945 | up_read(&inode->i_alloc_sem); | |
1946 | ||
1947 | have_alloc_sem = 0; | |
1948 | rw_level = -1; | |
1949 | ||
1950 | direct_io = 0; | |
9517bac6 MF |
1951 | goto relock; |
1952 | } | |
1953 | ||
9ea2d32f MF |
1954 | /* |
1955 | * To later detect whether a journal commit for sync writes is | |
1956 | * necessary, we sample i_size, and cluster count here. | |
1957 | */ | |
1958 | old_size = i_size_read(inode); | |
1959 | old_clusters = OCFS2_I(inode)->ip_clusters; | |
1960 | ||
ccd979bd | 1961 | /* communicate with ocfs2_dio_end_io */ |
7cdfc3a1 | 1962 | ocfs2_iocb_set_rw_locked(iocb, rw_level); |
ccd979bd | 1963 | |
9517bac6 | 1964 | if (direct_io) { |
b6af1bcd NP |
1965 | ret = generic_segment_checks(iov, &nr_segs, &ocount, |
1966 | VERIFY_READ); | |
1967 | if (ret) | |
1968 | goto out_dio; | |
1969 | ||
1970 | ret = generic_write_checks(file, ppos, &count, | |
1971 | S_ISBLK(inode->i_mode)); | |
1972 | if (ret) | |
1973 | goto out_dio; | |
1974 | ||
9517bac6 MF |
1975 | written = generic_file_direct_write(iocb, iov, &nr_segs, *ppos, |
1976 | ppos, count, ocount); | |
1977 | if (written < 0) { | |
1978 | ret = written; | |
1979 | goto out_dio; | |
1980 | } | |
1981 | } else { | |
b6af1bcd NP |
1982 | written = generic_file_aio_write_nolock(iocb, iov, nr_segs, |
1983 | *ppos); | |
9517bac6 | 1984 | } |
ccd979bd | 1985 | |
9517bac6 | 1986 | out_dio: |
ccd979bd | 1987 | /* buffered aio wouldn't have proper lock coverage today */ |
9517bac6 | 1988 | BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT)); |
ccd979bd | 1989 | |
9ea2d32f MF |
1990 | if ((file->f_flags & O_SYNC && !direct_io) || IS_SYNC(inode)) { |
1991 | /* | |
1992 | * The generic write paths have handled getting data | |
1993 | * to disk, but since we don't make use of the dirty | |
1994 | * inode list, a manual journal commit is necessary | |
1995 | * here. | |
1996 | */ | |
1997 | if (old_size != i_size_read(inode) || | |
1998 | old_clusters != OCFS2_I(inode)->ip_clusters) { | |
1999 | ret = journal_force_commit(osb->journal->j_journal); | |
2000 | if (ret < 0) | |
2001 | written = ret; | |
2002 | } | |
2003 | } | |
2004 | ||
ccd979bd MF |
2005 | /* |
2006 | * deep in g_f_a_w_n()->ocfs2_direct_IO we pass in a ocfs2_dio_end_io | |
2007 | * function pointer which is called when o_direct io completes so that | |
2008 | * it can unlock our rw lock. (it's the clustered equivalent of | |
2009 | * i_alloc_sem; protects truncate from racing with pending ios). | |
2010 | * Unfortunately there are error cases which call end_io and others | |
2011 | * that don't. so we don't have to unlock the rw_lock if either an | |
2012 | * async dio is going to do it in the future or an end_io after an | |
2013 | * error has already done it. | |
2014 | */ | |
2015 | if (ret == -EIOCBQUEUED || !ocfs2_iocb_is_rw_locked(iocb)) { | |
2016 | rw_level = -1; | |
2017 | have_alloc_sem = 0; | |
2018 | } | |
2019 | ||
2020 | out: | |
9517bac6 MF |
2021 | if (rw_level != -1) |
2022 | ocfs2_rw_unlock(inode, rw_level); | |
2023 | ||
2024 | out_sems: | |
ccd979bd MF |
2025 | if (have_alloc_sem) |
2026 | up_read(&inode->i_alloc_sem); | |
9517bac6 | 2027 | |
1b1dcc1b | 2028 | mutex_unlock(&inode->i_mutex); |
ccd979bd MF |
2029 | |
2030 | mlog_exit(ret); | |
9517bac6 | 2031 | return written ? written : ret; |
ccd979bd MF |
2032 | } |
2033 | ||
8659ac25 TY |
2034 | static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe, |
2035 | struct file *out, | |
2036 | loff_t *ppos, | |
2037 | size_t len, | |
2038 | unsigned int flags) | |
2039 | { | |
2040 | int ret; | |
d28c9174 | 2041 | struct inode *inode = out->f_path.dentry->d_inode; |
8659ac25 TY |
2042 | |
2043 | mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", out, pipe, | |
2044 | (unsigned int)len, | |
d28c9174 JS |
2045 | out->f_path.dentry->d_name.len, |
2046 | out->f_path.dentry->d_name.name); | |
8659ac25 TY |
2047 | |
2048 | inode_double_lock(inode, pipe->inode); | |
2049 | ||
2050 | ret = ocfs2_rw_lock(inode, 1); | |
2051 | if (ret < 0) { | |
2052 | mlog_errno(ret); | |
2053 | goto out; | |
2054 | } | |
2055 | ||
9517bac6 MF |
2056 | ret = ocfs2_prepare_inode_for_write(out->f_path.dentry, ppos, len, 0, |
2057 | NULL); | |
8659ac25 TY |
2058 | if (ret < 0) { |
2059 | mlog_errno(ret); | |
2060 | goto out_unlock; | |
2061 | } | |
2062 | ||
b6af1bcd | 2063 | ret = generic_file_splice_write_nolock(pipe, out, ppos, len, flags); |
8659ac25 TY |
2064 | |
2065 | out_unlock: | |
2066 | ocfs2_rw_unlock(inode, 1); | |
2067 | out: | |
2068 | inode_double_unlock(inode, pipe->inode); | |
2069 | ||
2070 | mlog_exit(ret); | |
2071 | return ret; | |
2072 | } | |
2073 | ||
2074 | static ssize_t ocfs2_file_splice_read(struct file *in, | |
2075 | loff_t *ppos, | |
2076 | struct pipe_inode_info *pipe, | |
2077 | size_t len, | |
2078 | unsigned int flags) | |
2079 | { | |
2080 | int ret = 0; | |
d28c9174 | 2081 | struct inode *inode = in->f_path.dentry->d_inode; |
8659ac25 TY |
2082 | |
2083 | mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", in, pipe, | |
2084 | (unsigned int)len, | |
d28c9174 JS |
2085 | in->f_path.dentry->d_name.len, |
2086 | in->f_path.dentry->d_name.name); | |
8659ac25 TY |
2087 | |
2088 | /* | |
2089 | * See the comment in ocfs2_file_aio_read() | |
2090 | */ | |
2091 | ret = ocfs2_meta_lock(inode, NULL, 0); | |
2092 | if (ret < 0) { | |
2093 | mlog_errno(ret); | |
2094 | goto bail; | |
2095 | } | |
2096 | ocfs2_meta_unlock(inode, 0); | |
2097 | ||
2098 | ret = generic_file_splice_read(in, ppos, pipe, len, flags); | |
2099 | ||
2100 | bail: | |
2101 | mlog_exit(ret); | |
2102 | return ret; | |
2103 | } | |
2104 | ||
ccd979bd | 2105 | static ssize_t ocfs2_file_aio_read(struct kiocb *iocb, |
027445c3 BP |
2106 | const struct iovec *iov, |
2107 | unsigned long nr_segs, | |
ccd979bd MF |
2108 | loff_t pos) |
2109 | { | |
25899dee | 2110 | int ret = 0, rw_level = -1, have_alloc_sem = 0, lock_level = 0; |
ccd979bd | 2111 | struct file *filp = iocb->ki_filp; |
d28c9174 | 2112 | struct inode *inode = filp->f_path.dentry->d_inode; |
ccd979bd | 2113 | |
027445c3 BP |
2114 | mlog_entry("(0x%p, %u, '%.*s')\n", filp, |
2115 | (unsigned int)nr_segs, | |
d28c9174 JS |
2116 | filp->f_path.dentry->d_name.len, |
2117 | filp->f_path.dentry->d_name.name); | |
ccd979bd MF |
2118 | |
2119 | if (!inode) { | |
2120 | ret = -EINVAL; | |
2121 | mlog_errno(ret); | |
2122 | goto bail; | |
2123 | } | |
2124 | ||
ccd979bd MF |
2125 | /* |
2126 | * buffered reads protect themselves in ->readpage(). O_DIRECT reads | |
2127 | * need locks to protect pending reads from racing with truncate. | |
2128 | */ | |
2129 | if (filp->f_flags & O_DIRECT) { | |
2130 | down_read(&inode->i_alloc_sem); | |
2131 | have_alloc_sem = 1; | |
2132 | ||
2133 | ret = ocfs2_rw_lock(inode, 0); | |
2134 | if (ret < 0) { | |
2135 | mlog_errno(ret); | |
2136 | goto bail; | |
2137 | } | |
2138 | rw_level = 0; | |
2139 | /* communicate with ocfs2_dio_end_io */ | |
7cdfc3a1 | 2140 | ocfs2_iocb_set_rw_locked(iocb, rw_level); |
ccd979bd MF |
2141 | } |
2142 | ||
c4374f8a MF |
2143 | /* |
2144 | * We're fine letting folks race truncates and extending | |
2145 | * writes with read across the cluster, just like they can | |
2146 | * locally. Hence no rw_lock during read. | |
2147 | * | |
2148 | * Take and drop the meta data lock to update inode fields | |
2149 | * like i_size. This allows the checks down below | |
2150 | * generic_file_aio_read() a chance of actually working. | |
2151 | */ | |
25899dee | 2152 | ret = ocfs2_meta_lock_atime(inode, filp->f_vfsmnt, &lock_level); |
c4374f8a MF |
2153 | if (ret < 0) { |
2154 | mlog_errno(ret); | |
2155 | goto bail; | |
2156 | } | |
25899dee | 2157 | ocfs2_meta_unlock(inode, lock_level); |
c4374f8a | 2158 | |
027445c3 | 2159 | ret = generic_file_aio_read(iocb, iov, nr_segs, iocb->ki_pos); |
ccd979bd MF |
2160 | if (ret == -EINVAL) |
2161 | mlog(ML_ERROR, "generic_file_aio_read returned -EINVAL\n"); | |
2162 | ||
2163 | /* buffered aio wouldn't have proper lock coverage today */ | |
2164 | BUG_ON(ret == -EIOCBQUEUED && !(filp->f_flags & O_DIRECT)); | |
2165 | ||
2166 | /* see ocfs2_file_aio_write */ | |
2167 | if (ret == -EIOCBQUEUED || !ocfs2_iocb_is_rw_locked(iocb)) { | |
2168 | rw_level = -1; | |
2169 | have_alloc_sem = 0; | |
2170 | } | |
2171 | ||
2172 | bail: | |
2173 | if (have_alloc_sem) | |
2174 | up_read(&inode->i_alloc_sem); | |
2175 | if (rw_level != -1) | |
2176 | ocfs2_rw_unlock(inode, rw_level); | |
2177 | mlog_exit(ret); | |
2178 | ||
2179 | return ret; | |
2180 | } | |
2181 | ||
92e1d5be | 2182 | const struct inode_operations ocfs2_file_iops = { |
ccd979bd MF |
2183 | .setattr = ocfs2_setattr, |
2184 | .getattr = ocfs2_getattr, | |
d38eb8db | 2185 | .permission = ocfs2_permission, |
385820a3 | 2186 | .fallocate = ocfs2_fallocate, |
ccd979bd MF |
2187 | }; |
2188 | ||
92e1d5be | 2189 | const struct inode_operations ocfs2_special_file_iops = { |
ccd979bd MF |
2190 | .setattr = ocfs2_setattr, |
2191 | .getattr = ocfs2_getattr, | |
d38eb8db | 2192 | .permission = ocfs2_permission, |
ccd979bd MF |
2193 | }; |
2194 | ||
4b6f5d20 | 2195 | const struct file_operations ocfs2_fops = { |
ccd979bd MF |
2196 | .read = do_sync_read, |
2197 | .write = do_sync_write, | |
ccd979bd MF |
2198 | .mmap = ocfs2_mmap, |
2199 | .fsync = ocfs2_sync_file, | |
2200 | .release = ocfs2_file_release, | |
2201 | .open = ocfs2_file_open, | |
2202 | .aio_read = ocfs2_file_aio_read, | |
2203 | .aio_write = ocfs2_file_aio_write, | |
ca4d147e | 2204 | .ioctl = ocfs2_ioctl, |
586d232b MF |
2205 | #ifdef CONFIG_COMPAT |
2206 | .compat_ioctl = ocfs2_compat_ioctl, | |
2207 | #endif | |
8659ac25 TY |
2208 | .splice_read = ocfs2_file_splice_read, |
2209 | .splice_write = ocfs2_file_splice_write, | |
ccd979bd MF |
2210 | }; |
2211 | ||
4b6f5d20 | 2212 | const struct file_operations ocfs2_dops = { |
ccd979bd MF |
2213 | .read = generic_read_dir, |
2214 | .readdir = ocfs2_readdir, | |
2215 | .fsync = ocfs2_sync_file, | |
ca4d147e | 2216 | .ioctl = ocfs2_ioctl, |
586d232b MF |
2217 | #ifdef CONFIG_COMPAT |
2218 | .compat_ioctl = ocfs2_compat_ioctl, | |
2219 | #endif | |
ccd979bd | 2220 | }; |