4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/f2fs_fs.h>
13 #include <linux/buffer_head.h>
14 #include <linux/writeback.h>
19 #include <trace/events/f2fs.h>
21 void f2fs_set_inode_flags(struct inode
*inode
)
23 unsigned int flags
= F2FS_I(inode
)->i_flags
;
24 unsigned int new_fl
= 0;
26 if (flags
& FS_SYNC_FL
)
28 if (flags
& FS_APPEND_FL
)
30 if (flags
& FS_IMMUTABLE_FL
)
31 new_fl
|= S_IMMUTABLE
;
32 if (flags
& FS_NOATIME_FL
)
34 if (flags
& FS_DIRSYNC_FL
)
36 inode_set_flags(inode
, new_fl
,
37 S_SYNC
|S_APPEND
|S_IMMUTABLE
|S_NOATIME
|S_DIRSYNC
);
38 mark_inode_dirty_sync(inode
);
41 static void __get_inode_rdev(struct inode
*inode
, struct f2fs_inode
*ri
)
43 if (S_ISCHR(inode
->i_mode
) || S_ISBLK(inode
->i_mode
) ||
44 S_ISFIFO(inode
->i_mode
) || S_ISSOCK(inode
->i_mode
)) {
47 old_decode_dev(le32_to_cpu(ri
->i_addr
[0]));
50 new_decode_dev(le32_to_cpu(ri
->i_addr
[1]));
54 static bool __written_first_block(struct f2fs_inode
*ri
)
56 block_t addr
= le32_to_cpu(ri
->i_addr
[0]);
58 if (addr
!= NEW_ADDR
&& addr
!= NULL_ADDR
)
63 static void __set_inode_rdev(struct inode
*inode
, struct f2fs_inode
*ri
)
65 if (S_ISCHR(inode
->i_mode
) || S_ISBLK(inode
->i_mode
)) {
66 if (old_valid_dev(inode
->i_rdev
)) {
68 cpu_to_le32(old_encode_dev(inode
->i_rdev
));
73 cpu_to_le32(new_encode_dev(inode
->i_rdev
));
79 static void __recover_inline_status(struct inode
*inode
, struct page
*ipage
)
81 void *inline_data
= inline_data_addr(ipage
);
82 __le32
*start
= inline_data
;
83 __le32
*end
= start
+ MAX_INLINE_DATA
/ sizeof(__le32
);
87 f2fs_wait_on_page_writeback(ipage
, NODE
, true);
89 set_inode_flag(inode
, FI_DATA_EXIST
);
90 set_raw_inline(inode
, F2FS_INODE(ipage
));
91 set_page_dirty(ipage
);
98 static int do_read_inode(struct inode
*inode
)
100 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
101 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
102 struct page
*node_page
;
103 struct f2fs_inode
*ri
;
105 /* Check if ino is within scope */
106 if (check_nid_range(sbi
, inode
->i_ino
)) {
107 f2fs_msg(inode
->i_sb
, KERN_ERR
, "bad inode number: %lu",
108 (unsigned long) inode
->i_ino
);
113 node_page
= get_node_page(sbi
, inode
->i_ino
);
114 if (IS_ERR(node_page
))
115 return PTR_ERR(node_page
);
117 ri
= F2FS_INODE(node_page
);
119 inode
->i_mode
= le16_to_cpu(ri
->i_mode
);
120 i_uid_write(inode
, le32_to_cpu(ri
->i_uid
));
121 i_gid_write(inode
, le32_to_cpu(ri
->i_gid
));
122 set_nlink(inode
, le32_to_cpu(ri
->i_links
));
123 inode
->i_size
= le64_to_cpu(ri
->i_size
);
124 inode
->i_blocks
= le64_to_cpu(ri
->i_blocks
);
126 inode
->i_atime
.tv_sec
= le64_to_cpu(ri
->i_atime
);
127 inode
->i_ctime
.tv_sec
= le64_to_cpu(ri
->i_ctime
);
128 inode
->i_mtime
.tv_sec
= le64_to_cpu(ri
->i_mtime
);
129 inode
->i_atime
.tv_nsec
= le32_to_cpu(ri
->i_atime_nsec
);
130 inode
->i_ctime
.tv_nsec
= le32_to_cpu(ri
->i_ctime_nsec
);
131 inode
->i_mtime
.tv_nsec
= le32_to_cpu(ri
->i_mtime_nsec
);
132 inode
->i_generation
= le32_to_cpu(ri
->i_generation
);
134 fi
->i_current_depth
= le32_to_cpu(ri
->i_current_depth
);
135 fi
->i_xattr_nid
= le32_to_cpu(ri
->i_xattr_nid
);
136 fi
->i_flags
= le32_to_cpu(ri
->i_flags
);
138 fi
->i_advise
= ri
->i_advise
;
139 fi
->i_pino
= le32_to_cpu(ri
->i_pino
);
140 fi
->i_dir_level
= ri
->i_dir_level
;
142 if (f2fs_init_extent_tree(inode
, &ri
->i_ext
))
143 set_page_dirty(node_page
);
145 get_inline_info(inode
, ri
);
147 /* check data exist */
148 if (f2fs_has_inline_data(inode
) && !f2fs_exist_data(inode
))
149 __recover_inline_status(inode
, node_page
);
151 /* get rdev by using inline_info */
152 __get_inode_rdev(inode
, ri
);
154 if (__written_first_block(ri
))
155 set_inode_flag(inode
, FI_FIRST_BLOCK_WRITTEN
);
157 if (!need_inode_block_update(sbi
, inode
->i_ino
))
158 fi
->last_disk_size
= inode
->i_size
;
160 f2fs_put_page(node_page
, 1);
162 stat_inc_inline_xattr(inode
);
163 stat_inc_inline_inode(inode
);
164 stat_inc_inline_dir(inode
);
169 struct inode
*f2fs_iget(struct super_block
*sb
, unsigned long ino
)
171 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
175 inode
= iget_locked(sb
, ino
);
177 return ERR_PTR(-ENOMEM
);
179 if (!(inode
->i_state
& I_NEW
)) {
180 trace_f2fs_iget(inode
);
183 if (ino
== F2FS_NODE_INO(sbi
) || ino
== F2FS_META_INO(sbi
))
186 ret
= do_read_inode(inode
);
190 if (ino
== F2FS_NODE_INO(sbi
)) {
191 inode
->i_mapping
->a_ops
= &f2fs_node_aops
;
192 mapping_set_gfp_mask(inode
->i_mapping
, GFP_F2FS_ZERO
);
193 } else if (ino
== F2FS_META_INO(sbi
)) {
194 inode
->i_mapping
->a_ops
= &f2fs_meta_aops
;
195 mapping_set_gfp_mask(inode
->i_mapping
, GFP_F2FS_ZERO
);
196 } else if (S_ISREG(inode
->i_mode
)) {
197 inode
->i_op
= &f2fs_file_inode_operations
;
198 inode
->i_fop
= &f2fs_file_operations
;
199 inode
->i_mapping
->a_ops
= &f2fs_dblock_aops
;
200 } else if (S_ISDIR(inode
->i_mode
)) {
201 inode
->i_op
= &f2fs_dir_inode_operations
;
202 inode
->i_fop
= &f2fs_dir_operations
;
203 inode
->i_mapping
->a_ops
= &f2fs_dblock_aops
;
204 mapping_set_gfp_mask(inode
->i_mapping
, GFP_F2FS_HIGH_ZERO
);
205 } else if (S_ISLNK(inode
->i_mode
)) {
206 if (f2fs_encrypted_inode(inode
))
207 inode
->i_op
= &f2fs_encrypted_symlink_inode_operations
;
209 inode
->i_op
= &f2fs_symlink_inode_operations
;
210 inode_nohighmem(inode
);
211 inode
->i_mapping
->a_ops
= &f2fs_dblock_aops
;
212 } else if (S_ISCHR(inode
->i_mode
) || S_ISBLK(inode
->i_mode
) ||
213 S_ISFIFO(inode
->i_mode
) || S_ISSOCK(inode
->i_mode
)) {
214 inode
->i_op
= &f2fs_special_inode_operations
;
215 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
220 unlock_new_inode(inode
);
221 trace_f2fs_iget(inode
);
226 trace_f2fs_iget_exit(inode
, ret
);
230 int update_inode(struct inode
*inode
, struct page
*node_page
)
232 struct f2fs_inode
*ri
;
234 f2fs_wait_on_page_writeback(node_page
, NODE
, true);
236 ri
= F2FS_INODE(node_page
);
238 ri
->i_mode
= cpu_to_le16(inode
->i_mode
);
239 ri
->i_advise
= F2FS_I(inode
)->i_advise
;
240 ri
->i_uid
= cpu_to_le32(i_uid_read(inode
));
241 ri
->i_gid
= cpu_to_le32(i_gid_read(inode
));
242 ri
->i_links
= cpu_to_le32(inode
->i_nlink
);
243 ri
->i_size
= cpu_to_le64(i_size_read(inode
));
244 ri
->i_blocks
= cpu_to_le64(inode
->i_blocks
);
246 if (F2FS_I(inode
)->extent_tree
)
247 set_raw_extent(&F2FS_I(inode
)->extent_tree
->largest
,
250 memset(&ri
->i_ext
, 0, sizeof(ri
->i_ext
));
251 set_raw_inline(inode
, ri
);
253 ri
->i_atime
= cpu_to_le64(inode
->i_atime
.tv_sec
);
254 ri
->i_ctime
= cpu_to_le64(inode
->i_ctime
.tv_sec
);
255 ri
->i_mtime
= cpu_to_le64(inode
->i_mtime
.tv_sec
);
256 ri
->i_atime_nsec
= cpu_to_le32(inode
->i_atime
.tv_nsec
);
257 ri
->i_ctime_nsec
= cpu_to_le32(inode
->i_ctime
.tv_nsec
);
258 ri
->i_mtime_nsec
= cpu_to_le32(inode
->i_mtime
.tv_nsec
);
259 ri
->i_current_depth
= cpu_to_le32(F2FS_I(inode
)->i_current_depth
);
260 ri
->i_xattr_nid
= cpu_to_le32(F2FS_I(inode
)->i_xattr_nid
);
261 ri
->i_flags
= cpu_to_le32(F2FS_I(inode
)->i_flags
);
262 ri
->i_pino
= cpu_to_le32(F2FS_I(inode
)->i_pino
);
263 ri
->i_generation
= cpu_to_le32(inode
->i_generation
);
264 ri
->i_dir_level
= F2FS_I(inode
)->i_dir_level
;
266 __set_inode_rdev(inode
, ri
);
267 set_cold_node(inode
, node_page
);
268 f2fs_inode_synced(inode
);
271 if (inode
->i_nlink
== 0)
272 clear_inline_node(node_page
);
274 return set_page_dirty(node_page
);
277 int update_inode_page(struct inode
*inode
)
279 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
280 struct page
*node_page
;
283 node_page
= get_node_page(sbi
, inode
->i_ino
);
284 if (IS_ERR(node_page
)) {
285 int err
= PTR_ERR(node_page
);
286 if (err
== -ENOMEM
) {
289 } else if (err
!= -ENOENT
) {
290 f2fs_stop_checkpoint(sbi
, false);
292 f2fs_inode_synced(inode
);
295 ret
= update_inode(inode
, node_page
);
296 f2fs_put_page(node_page
, 1);
300 int f2fs_write_inode(struct inode
*inode
, struct writeback_control
*wbc
)
302 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
304 if (inode
->i_ino
== F2FS_NODE_INO(sbi
) ||
305 inode
->i_ino
== F2FS_META_INO(sbi
))
308 if (!is_inode_flag_set(inode
, FI_DIRTY_INODE
))
312 * We need to balance fs here to prevent from producing dirty node pages
313 * during the urgent cleaning time when runing out of free sections.
315 if (update_inode_page(inode
))
316 f2fs_balance_fs(sbi
, true);
321 * Called at the last iput() if i_nlink is zero
323 void f2fs_evict_inode(struct inode
*inode
)
325 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
326 nid_t xnid
= F2FS_I(inode
)->i_xattr_nid
;
329 /* some remained atomic pages should discarded */
330 if (f2fs_is_atomic_file(inode
))
331 drop_inmem_pages(inode
);
333 trace_f2fs_evict_inode(inode
);
334 truncate_inode_pages_final(&inode
->i_data
);
336 if (inode
->i_ino
== F2FS_NODE_INO(sbi
) ||
337 inode
->i_ino
== F2FS_META_INO(sbi
))
340 f2fs_bug_on(sbi
, get_dirty_pages(inode
));
341 remove_dirty_inode(inode
);
343 f2fs_destroy_extent_tree(inode
);
345 if (inode
->i_nlink
|| is_bad_inode(inode
))
348 #ifdef CONFIG_F2FS_FAULT_INJECTION
349 if (time_to_inject(FAULT_EVICT_INODE
))
353 sb_start_intwrite(inode
->i_sb
);
354 set_inode_flag(inode
, FI_NO_ALLOC
);
355 i_size_write(inode
, 0);
357 if (F2FS_HAS_BLOCKS(inode
))
358 err
= f2fs_truncate(inode
, true);
362 err
= remove_inode_page(inode
);
366 /* give more chances, if ENOMEM case */
367 if (err
== -ENOMEM
) {
373 update_inode_page(inode
);
374 sb_end_intwrite(inode
->i_sb
);
376 stat_dec_inline_xattr(inode
);
377 stat_dec_inline_dir(inode
);
378 stat_dec_inline_inode(inode
);
380 invalidate_mapping_pages(NODE_MAPPING(sbi
), inode
->i_ino
, inode
->i_ino
);
382 invalidate_mapping_pages(NODE_MAPPING(sbi
), xnid
, xnid
);
383 if (is_inode_flag_set(inode
, FI_APPEND_WRITE
))
384 add_ino_entry(sbi
, inode
->i_ino
, APPEND_INO
);
385 if (is_inode_flag_set(inode
, FI_UPDATE_WRITE
))
386 add_ino_entry(sbi
, inode
->i_ino
, UPDATE_INO
);
387 if (is_inode_flag_set(inode
, FI_FREE_NID
)) {
388 alloc_nid_failed(sbi
, inode
->i_ino
);
389 clear_inode_flag(inode
, FI_FREE_NID
);
391 f2fs_bug_on(sbi
, err
&&
392 !exist_written_data(sbi
, inode
->i_ino
, ORPHAN_INO
));
394 fscrypt_put_encryption_info(inode
, NULL
);
396 f2fs_bug_on(sbi
, is_inode_flag_set(inode
, FI_DIRTY_INODE
));
400 /* caller should call f2fs_lock_op() */
401 void handle_failed_inode(struct inode
*inode
)
403 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
406 /* don't make bad inode, since it becomes a regular file. */
407 unlock_new_inode(inode
);
410 * Note: we should add inode to orphan list before f2fs_unlock_op()
411 * so we can prevent losing this orphan when encoutering checkpoint
412 * and following suddenly power-off.
414 get_node_info(sbi
, inode
->i_ino
, &ni
);
416 if (ni
.blk_addr
!= NULL_ADDR
) {
417 int err
= acquire_orphan_inode(sbi
);
419 set_sbi_flag(sbi
, SBI_NEED_FSCK
);
420 f2fs_msg(sbi
->sb
, KERN_WARNING
,
421 "Too many orphan inodes, run fsck to fix.");
423 add_orphan_inode(sbi
, inode
->i_ino
);
425 alloc_nid_done(sbi
, inode
->i_ino
);
427 set_inode_flag(inode
, FI_FREE_NID
);
432 /* iput will drop the inode object */