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11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/buffer_head.h>
14#include <linux/backing-dev.h>
15#include <linux/writeback.h>
16
17#include "f2fs.h"
18#include "node.h"
19
20#include <trace/events/f2fs.h>
21
22void f2fs_mark_inode_dirty_sync(struct inode *inode)
23{
24 if (f2fs_inode_dirtied(inode))
25 return;
26 mark_inode_dirty_sync(inode);
27}
28
29void f2fs_set_inode_flags(struct inode *inode)
30{
31 unsigned int flags = F2FS_I(inode)->i_flags;
32 unsigned int new_fl = 0;
33
34 if (flags & FS_SYNC_FL)
35 new_fl |= S_SYNC;
36 if (flags & FS_APPEND_FL)
37 new_fl |= S_APPEND;
38 if (flags & FS_IMMUTABLE_FL)
39 new_fl |= S_IMMUTABLE;
40 if (flags & FS_NOATIME_FL)
41 new_fl |= S_NOATIME;
42 if (flags & FS_DIRSYNC_FL)
43 new_fl |= S_DIRSYNC;
44 inode_set_flags(inode, new_fl,
45 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
46 f2fs_mark_inode_dirty_sync(inode);
47}
48
49static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
50{
51 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
52 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
53 if (ri->i_addr[0])
54 inode->i_rdev =
55 old_decode_dev(le32_to_cpu(ri->i_addr[0]));
56 else
57 inode->i_rdev =
58 new_decode_dev(le32_to_cpu(ri->i_addr[1]));
59 }
60}
61
62static bool __written_first_block(struct f2fs_inode *ri)
63{
64 block_t addr = le32_to_cpu(ri->i_addr[0]);
65
66 if (addr != NEW_ADDR && addr != NULL_ADDR)
67 return true;
68 return false;
69}
70
71static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
72{
73 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
74 if (old_valid_dev(inode->i_rdev)) {
75 ri->i_addr[0] =
76 cpu_to_le32(old_encode_dev(inode->i_rdev));
77 ri->i_addr[1] = 0;
78 } else {
79 ri->i_addr[0] = 0;
80 ri->i_addr[1] =
81 cpu_to_le32(new_encode_dev(inode->i_rdev));
82 ri->i_addr[2] = 0;
83 }
84 }
85}
86
87static void __recover_inline_status(struct inode *inode, struct page *ipage)
88{
89 void *inline_data = inline_data_addr(ipage);
90 __le32 *start = inline_data;
91 __le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
92
93 while (start < end) {
94 if (*start++) {
95 f2fs_wait_on_page_writeback(ipage, NODE, true);
96
97 set_inode_flag(inode, FI_DATA_EXIST);
98 set_raw_inline(inode, F2FS_INODE(ipage));
99 set_page_dirty(ipage);
100 return;
101 }
102 }
103 return;
104}
105
106static int do_read_inode(struct inode *inode)
107{
108 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
109 struct f2fs_inode_info *fi = F2FS_I(inode);
110 struct page *node_page;
111 struct f2fs_inode *ri;
112
113
114 if (check_nid_range(sbi, inode->i_ino)) {
115 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
116 (unsigned long) inode->i_ino);
117 WARN_ON(1);
118 return -EINVAL;
119 }
120
121 node_page = get_node_page(sbi, inode->i_ino);
122 if (IS_ERR(node_page))
123 return PTR_ERR(node_page);
124
125 ri = F2FS_INODE(node_page);
126
127 inode->i_mode = le16_to_cpu(ri->i_mode);
128 i_uid_write(inode, le32_to_cpu(ri->i_uid));
129 i_gid_write(inode, le32_to_cpu(ri->i_gid));
130 set_nlink(inode, le32_to_cpu(ri->i_links));
131 inode->i_size = le64_to_cpu(ri->i_size);
132 inode->i_blocks = le64_to_cpu(ri->i_blocks);
133
134 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
135 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
136 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
137 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
138 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
139 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
140 inode->i_generation = le32_to_cpu(ri->i_generation);
141
142 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
143 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
144 fi->i_flags = le32_to_cpu(ri->i_flags);
145 fi->flags = 0;
146 fi->i_advise = ri->i_advise;
147 fi->i_pino = le32_to_cpu(ri->i_pino);
148 fi->i_dir_level = ri->i_dir_level;
149
150 if (f2fs_init_extent_tree(inode, &ri->i_ext))
151 set_page_dirty(node_page);
152
153 get_inline_info(inode, ri);
154
155
156 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
157 __recover_inline_status(inode, node_page);
158
159
160 __get_inode_rdev(inode, ri);
161
162 if (__written_first_block(ri))
163 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
164
165 if (!need_inode_block_update(sbi, inode->i_ino))
166 fi->last_disk_size = inode->i_size;
167
168 f2fs_put_page(node_page, 1);
169
170 stat_inc_inline_xattr(inode);
171 stat_inc_inline_inode(inode);
172 stat_inc_inline_dir(inode);
173
174 return 0;
175}
176
177struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
178{
179 struct f2fs_sb_info *sbi = F2FS_SB(sb);
180 struct inode *inode;
181 int ret = 0;
182
183 inode = iget_locked(sb, ino);
184 if (!inode)
185 return ERR_PTR(-ENOMEM);
186
187 if (!(inode->i_state & I_NEW)) {
188 trace_f2fs_iget(inode);
189 return inode;
190 }
191 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
192 goto make_now;
193
194 ret = do_read_inode(inode);
195 if (ret)
196 goto bad_inode;
197make_now:
198 if (ino == F2FS_NODE_INO(sbi)) {
199 inode->i_mapping->a_ops = &f2fs_node_aops;
200 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
201 } else if (ino == F2FS_META_INO(sbi)) {
202 inode->i_mapping->a_ops = &f2fs_meta_aops;
203 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
204 } else if (S_ISREG(inode->i_mode)) {
205 inode->i_op = &f2fs_file_inode_operations;
206 inode->i_fop = &f2fs_file_operations;
207 inode->i_mapping->a_ops = &f2fs_dblock_aops;
208 } else if (S_ISDIR(inode->i_mode)) {
209 inode->i_op = &f2fs_dir_inode_operations;
210 inode->i_fop = &f2fs_dir_operations;
211 inode->i_mapping->a_ops = &f2fs_dblock_aops;
212 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
213 } else if (S_ISLNK(inode->i_mode)) {
214 if (f2fs_encrypted_inode(inode))
215 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
216 else
217 inode->i_op = &f2fs_symlink_inode_operations;
218 inode_nohighmem(inode);
219 inode->i_mapping->a_ops = &f2fs_dblock_aops;
220 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
221 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
222 inode->i_op = &f2fs_special_inode_operations;
223 init_special_inode(inode, inode->i_mode, inode->i_rdev);
224 } else {
225 ret = -EIO;
226 goto bad_inode;
227 }
228 unlock_new_inode(inode);
229 trace_f2fs_iget(inode);
230 return inode;
231
232bad_inode:
233 iget_failed(inode);
234 trace_f2fs_iget_exit(inode, ret);
235 return ERR_PTR(ret);
236}
237
238struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
239{
240 struct inode *inode;
241retry:
242 inode = f2fs_iget(sb, ino);
243 if (IS_ERR(inode)) {
244 if (PTR_ERR(inode) == -ENOMEM) {
245 congestion_wait(BLK_RW_ASYNC, HZ/50);
246 goto retry;
247 }
248 }
249 return inode;
250}
251
252int update_inode(struct inode *inode, struct page *node_page)
253{
254 struct f2fs_inode *ri;
255
256 f2fs_inode_synced(inode);
257
258 f2fs_wait_on_page_writeback(node_page, NODE, true);
259
260 ri = F2FS_INODE(node_page);
261
262 ri->i_mode = cpu_to_le16(inode->i_mode);
263 ri->i_advise = F2FS_I(inode)->i_advise;
264 ri->i_uid = cpu_to_le32(i_uid_read(inode));
265 ri->i_gid = cpu_to_le32(i_gid_read(inode));
266 ri->i_links = cpu_to_le32(inode->i_nlink);
267 ri->i_size = cpu_to_le64(i_size_read(inode));
268 ri->i_blocks = cpu_to_le64(inode->i_blocks);
269
270 if (F2FS_I(inode)->extent_tree)
271 set_raw_extent(&F2FS_I(inode)->extent_tree->largest,
272 &ri->i_ext);
273 else
274 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
275 set_raw_inline(inode, ri);
276
277 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
278 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
279 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
280 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
281 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
282 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
283 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
284 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
285 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
286 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
287 ri->i_generation = cpu_to_le32(inode->i_generation);
288 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
289
290 __set_inode_rdev(inode, ri);
291 set_cold_node(inode, node_page);
292
293
294 if (inode->i_nlink == 0)
295 clear_inline_node(node_page);
296
297 return set_page_dirty(node_page);
298}
299
300int update_inode_page(struct inode *inode)
301{
302 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
303 struct page *node_page;
304 int ret = 0;
305retry:
306 node_page = get_node_page(sbi, inode->i_ino);
307 if (IS_ERR(node_page)) {
308 int err = PTR_ERR(node_page);
309 if (err == -ENOMEM) {
310 cond_resched();
311 goto retry;
312 } else if (err != -ENOENT) {
313 f2fs_stop_checkpoint(sbi, false);
314 }
315 f2fs_inode_synced(inode);
316 return 0;
317 }
318 ret = update_inode(inode, node_page);
319 f2fs_put_page(node_page, 1);
320 return ret;
321}
322
323int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
324{
325 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
326
327 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
328 inode->i_ino == F2FS_META_INO(sbi))
329 return 0;
330
331 if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
332 return 0;
333
334
335
336
337
338 if (update_inode_page(inode))
339 f2fs_balance_fs(sbi, true);
340 return 0;
341}
342
343
344
345
346void f2fs_evict_inode(struct inode *inode)
347{
348 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
349 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
350 int err = 0;
351
352
353 if (f2fs_is_atomic_file(inode))
354 drop_inmem_pages(inode);
355
356 trace_f2fs_evict_inode(inode);
357 truncate_inode_pages_final(&inode->i_data);
358
359 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
360 inode->i_ino == F2FS_META_INO(sbi))
361 goto out_clear;
362
363 f2fs_bug_on(sbi, get_dirty_pages(inode));
364 remove_dirty_inode(inode);
365
366 f2fs_destroy_extent_tree(inode);
367
368 if (inode->i_nlink || is_bad_inode(inode))
369 goto no_delete;
370
371#ifdef CONFIG_F2FS_FAULT_INJECTION
372 if (time_to_inject(sbi, FAULT_EVICT_INODE))
373 goto no_delete;
374#endif
375
376 sb_start_intwrite(inode->i_sb);
377 set_inode_flag(inode, FI_NO_ALLOC);
378 i_size_write(inode, 0);
379retry:
380 if (F2FS_HAS_BLOCKS(inode))
381 err = f2fs_truncate(inode);
382
383 if (!err) {
384 f2fs_lock_op(sbi);
385 err = remove_inode_page(inode);
386 f2fs_unlock_op(sbi);
387 }
388
389
390 if (err == -ENOMEM) {
391 err = 0;
392 goto retry;
393 }
394
395 if (err)
396 update_inode_page(inode);
397 sb_end_intwrite(inode->i_sb);
398no_delete:
399 stat_dec_inline_xattr(inode);
400 stat_dec_inline_dir(inode);
401 stat_dec_inline_inode(inode);
402
403 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
404 if (xnid)
405 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
406 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
407 add_ino_entry(sbi, inode->i_ino, APPEND_INO);
408 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
409 add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
410 if (is_inode_flag_set(inode, FI_FREE_NID)) {
411 alloc_nid_failed(sbi, inode->i_ino);
412 clear_inode_flag(inode, FI_FREE_NID);
413 }
414 f2fs_bug_on(sbi, err &&
415 !exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
416out_clear:
417 fscrypt_put_encryption_info(inode, NULL);
418 clear_inode(inode);
419}
420
421
422void handle_failed_inode(struct inode *inode)
423{
424 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
425 struct node_info ni;
426
427
428 unlock_new_inode(inode);
429
430
431
432
433
434
435 get_node_info(sbi, inode->i_ino, &ni);
436
437 if (ni.blk_addr != NULL_ADDR) {
438 int err = acquire_orphan_inode(sbi);
439 if (err) {
440 set_sbi_flag(sbi, SBI_NEED_FSCK);
441 f2fs_msg(sbi->sb, KERN_WARNING,
442 "Too many orphan inodes, run fsck to fix.");
443 } else {
444 add_orphan_inode(inode);
445 }
446 alloc_nid_done(sbi, inode->i_ino);
447 } else {
448 set_inode_flag(inode, FI_FREE_NID);
449 }
450
451 f2fs_unlock_op(sbi);
452
453
454 iput(inode);
455}
456
