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11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/buffer_head.h>
14#include <linux/writeback.h>
15
16#include "f2fs.h"
17#include "node.h"
18
19#include <trace/events/f2fs.h>
20
21void f2fs_set_inode_flags(struct inode *inode)
22{
23 unsigned int flags = F2FS_I(inode)->i_flags;
24 unsigned int new_fl = 0;
25
26 if (flags & FS_SYNC_FL)
27 new_fl |= S_SYNC;
28 if (flags & FS_APPEND_FL)
29 new_fl |= S_APPEND;
30 if (flags & FS_IMMUTABLE_FL)
31 new_fl |= S_IMMUTABLE;
32 if (flags & FS_NOATIME_FL)
33 new_fl |= S_NOATIME;
34 if (flags & FS_DIRSYNC_FL)
35 new_fl |= S_DIRSYNC;
36 inode_set_flags(inode, new_fl,
37 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
38}
39
40static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
41{
42 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
43 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
44 if (ri->i_addr[0])
45 inode->i_rdev =
46 old_decode_dev(le32_to_cpu(ri->i_addr[0]));
47 else
48 inode->i_rdev =
49 new_decode_dev(le32_to_cpu(ri->i_addr[1]));
50 }
51}
52
53static bool __written_first_block(struct f2fs_inode *ri)
54{
55 block_t addr = le32_to_cpu(ri->i_addr[0]);
56
57 if (addr != NEW_ADDR && addr != NULL_ADDR)
58 return true;
59 return false;
60}
61
62static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
63{
64 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
65 if (old_valid_dev(inode->i_rdev)) {
66 ri->i_addr[0] =
67 cpu_to_le32(old_encode_dev(inode->i_rdev));
68 ri->i_addr[1] = 0;
69 } else {
70 ri->i_addr[0] = 0;
71 ri->i_addr[1] =
72 cpu_to_le32(new_encode_dev(inode->i_rdev));
73 ri->i_addr[2] = 0;
74 }
75 }
76}
77
78static void __recover_inline_status(struct inode *inode, struct page *ipage)
79{
80 void *inline_data = inline_data_addr(ipage);
81 __le32 *start = inline_data;
82 __le32 *end = start + MAX_INLINE_DATA / sizeof(__le32);
83
84 while (start < end) {
85 if (*start++) {
86 f2fs_wait_on_page_writeback(ipage, NODE);
87
88 set_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
89 set_raw_inline(F2FS_I(inode), F2FS_INODE(ipage));
90 set_page_dirty(ipage);
91 return;
92 }
93 }
94 return;
95}
96
97static int do_read_inode(struct inode *inode)
98{
99 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
100 struct f2fs_inode_info *fi = F2FS_I(inode);
101 struct page *node_page;
102 struct f2fs_inode *ri;
103
104
105 if (check_nid_range(sbi, inode->i_ino)) {
106 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
107 (unsigned long) inode->i_ino);
108 WARN_ON(1);
109 return -EINVAL;
110 }
111
112 node_page = get_node_page(sbi, inode->i_ino);
113 if (IS_ERR(node_page))
114 return PTR_ERR(node_page);
115
116 ri = F2FS_INODE(node_page);
117
118 inode->i_mode = le16_to_cpu(ri->i_mode);
119 i_uid_write(inode, le32_to_cpu(ri->i_uid));
120 i_gid_write(inode, le32_to_cpu(ri->i_gid));
121 set_nlink(inode, le32_to_cpu(ri->i_links));
122 inode->i_size = le64_to_cpu(ri->i_size);
123 inode->i_blocks = le64_to_cpu(ri->i_blocks);
124
125 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
126 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
127 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
128 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
129 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
130 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
131 inode->i_generation = le32_to_cpu(ri->i_generation);
132
133 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
134 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
135 fi->i_flags = le32_to_cpu(ri->i_flags);
136 fi->flags = 0;
137 fi->i_advise = ri->i_advise;
138 fi->i_pino = le32_to_cpu(ri->i_pino);
139 fi->i_dir_level = ri->i_dir_level;
140
141 f2fs_init_extent_tree(inode, &ri->i_ext);
142
143 get_inline_info(fi, ri);
144
145
146 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
147 __recover_inline_status(inode, node_page);
148
149
150 __get_inode_rdev(inode, ri);
151
152 if (__written_first_block(ri))
153 set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
154
155 f2fs_put_page(node_page, 1);
156
157 stat_inc_inline_xattr(inode);
158 stat_inc_inline_inode(inode);
159 stat_inc_inline_dir(inode);
160
161 return 0;
162}
163
164struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
165{
166 struct f2fs_sb_info *sbi = F2FS_SB(sb);
167 struct inode *inode;
168 int ret = 0;
169
170 inode = iget_locked(sb, ino);
171 if (!inode)
172 return ERR_PTR(-ENOMEM);
173
174 if (!(inode->i_state & I_NEW)) {
175 trace_f2fs_iget(inode);
176 return inode;
177 }
178 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
179 goto make_now;
180
181 ret = do_read_inode(inode);
182 if (ret)
183 goto bad_inode;
184make_now:
185 if (ino == F2FS_NODE_INO(sbi)) {
186 inode->i_mapping->a_ops = &f2fs_node_aops;
187 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
188 } else if (ino == F2FS_META_INO(sbi)) {
189 inode->i_mapping->a_ops = &f2fs_meta_aops;
190 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
191 } else if (S_ISREG(inode->i_mode)) {
192 inode->i_op = &f2fs_file_inode_operations;
193 inode->i_fop = &f2fs_file_operations;
194 inode->i_mapping->a_ops = &f2fs_dblock_aops;
195 } else if (S_ISDIR(inode->i_mode)) {
196 inode->i_op = &f2fs_dir_inode_operations;
197 inode->i_fop = &f2fs_dir_operations;
198 inode->i_mapping->a_ops = &f2fs_dblock_aops;
199 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO);
200 } else if (S_ISLNK(inode->i_mode)) {
201 if (f2fs_encrypted_inode(inode))
202 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
203 else
204 inode->i_op = &f2fs_symlink_inode_operations;
205 inode->i_mapping->a_ops = &f2fs_dblock_aops;
206 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
207 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
208 inode->i_op = &f2fs_special_inode_operations;
209 init_special_inode(inode, inode->i_mode, inode->i_rdev);
210 } else {
211 ret = -EIO;
212 goto bad_inode;
213 }
214 unlock_new_inode(inode);
215 trace_f2fs_iget(inode);
216 return inode;
217
218bad_inode:
219 iget_failed(inode);
220 trace_f2fs_iget_exit(inode, ret);
221 return ERR_PTR(ret);
222}
223
224void update_inode(struct inode *inode, struct page *node_page)
225{
226 struct f2fs_inode *ri;
227
228 f2fs_wait_on_page_writeback(node_page, NODE);
229
230 ri = F2FS_INODE(node_page);
231
232 ri->i_mode = cpu_to_le16(inode->i_mode);
233 ri->i_advise = F2FS_I(inode)->i_advise;
234 ri->i_uid = cpu_to_le32(i_uid_read(inode));
235 ri->i_gid = cpu_to_le32(i_gid_read(inode));
236 ri->i_links = cpu_to_le32(inode->i_nlink);
237 ri->i_size = cpu_to_le64(i_size_read(inode));
238 ri->i_blocks = cpu_to_le64(inode->i_blocks);
239
240 if (F2FS_I(inode)->extent_tree)
241 set_raw_extent(&F2FS_I(inode)->extent_tree->largest,
242 &ri->i_ext);
243 else
244 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
245 set_raw_inline(F2FS_I(inode), ri);
246
247 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
248 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
249 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
250 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
251 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
252 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
253 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
254 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
255 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
256 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
257 ri->i_generation = cpu_to_le32(inode->i_generation);
258 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
259
260 __set_inode_rdev(inode, ri);
261 set_cold_node(inode, node_page);
262 set_page_dirty(node_page);
263
264 clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
265}
266
267void update_inode_page(struct inode *inode)
268{
269 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
270 struct page *node_page;
271retry:
272 node_page = get_node_page(sbi, inode->i_ino);
273 if (IS_ERR(node_page)) {
274 int err = PTR_ERR(node_page);
275 if (err == -ENOMEM) {
276 cond_resched();
277 goto retry;
278 } else if (err != -ENOENT) {
279 f2fs_stop_checkpoint(sbi);
280 }
281 return;
282 }
283 update_inode(inode, node_page);
284 f2fs_put_page(node_page, 1);
285}
286
287int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
288{
289 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
290
291 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
292 inode->i_ino == F2FS_META_INO(sbi))
293 return 0;
294
295 if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE))
296 return 0;
297
298
299
300
301
302 f2fs_lock_op(sbi);
303 update_inode_page(inode);
304 f2fs_unlock_op(sbi);
305
306 if (wbc)
307 f2fs_balance_fs(sbi);
308
309 return 0;
310}
311
312
313
314
315void f2fs_evict_inode(struct inode *inode)
316{
317 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
318 struct f2fs_inode_info *fi = F2FS_I(inode);
319 nid_t xnid = fi->i_xattr_nid;
320 int err = 0;
321
322
323 if (f2fs_is_atomic_file(inode))
324 commit_inmem_pages(inode, true);
325
326 trace_f2fs_evict_inode(inode);
327 truncate_inode_pages_final(&inode->i_data);
328
329 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
330 inode->i_ino == F2FS_META_INO(sbi))
331 goto out_clear;
332
333 f2fs_bug_on(sbi, get_dirty_pages(inode));
334 remove_dirty_dir_inode(inode);
335
336 f2fs_destroy_extent_tree(inode);
337
338 if (inode->i_nlink || is_bad_inode(inode))
339 goto no_delete;
340
341 sb_start_intwrite(inode->i_sb);
342 set_inode_flag(fi, FI_NO_ALLOC);
343 i_size_write(inode, 0);
344
345 if (F2FS_HAS_BLOCKS(inode))
346 err = f2fs_truncate(inode, true);
347
348 if (!err) {
349 f2fs_lock_op(sbi);
350 err = remove_inode_page(inode);
351 f2fs_unlock_op(sbi);
352 }
353
354 sb_end_intwrite(inode->i_sb);
355no_delete:
356 stat_dec_inline_xattr(inode);
357 stat_dec_inline_dir(inode);
358 stat_dec_inline_inode(inode);
359
360 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
361 if (xnid)
362 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
363 if (is_inode_flag_set(fi, FI_APPEND_WRITE))
364 add_dirty_inode(sbi, inode->i_ino, APPEND_INO);
365 if (is_inode_flag_set(fi, FI_UPDATE_WRITE))
366 add_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
367 if (is_inode_flag_set(fi, FI_FREE_NID)) {
368 if (err && err != -ENOENT)
369 alloc_nid_done(sbi, inode->i_ino);
370 else
371 alloc_nid_failed(sbi, inode->i_ino);
372 clear_inode_flag(fi, FI_FREE_NID);
373 }
374
375 if (err && err != -ENOENT) {
376 if (!exist_written_data(sbi, inode->i_ino, ORPHAN_INO)) {
377
378
379
380
381
382 set_sbi_flag(sbi, SBI_NEED_FSCK);
383 f2fs_msg(sbi->sb, KERN_WARNING,
384 "inode (ino:%lu) resource leak, run fsck "
385 "to fix this issue!", inode->i_ino);
386 }
387 }
388out_clear:
389#ifdef CONFIG_F2FS_FS_ENCRYPTION
390 if (fi->i_crypt_info)
391 f2fs_free_encryption_info(inode, fi->i_crypt_info);
392#endif
393 clear_inode(inode);
394}
395
396
397void handle_failed_inode(struct inode *inode)
398{
399 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
400 int err = 0;
401
402 clear_nlink(inode);
403 make_bad_inode(inode);
404 unlock_new_inode(inode);
405
406 i_size_write(inode, 0);
407 if (F2FS_HAS_BLOCKS(inode))
408 err = f2fs_truncate(inode, false);
409
410 if (!err)
411 err = remove_inode_page(inode);
412
413
414
415
416
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418
419
420
421
422
423
424 if (err && err != -ENOENT) {
425 err = acquire_orphan_inode(sbi);
426 if (!err)
427 add_orphan_inode(sbi, inode->i_ino);
428 }
429
430 set_inode_flag(F2FS_I(inode), FI_FREE_NID);
431 f2fs_unlock_op(sbi);
432
433
434 iput(inode);
435}
436
