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>
18 static unsigned long dir_blocks(struct inode *inode)
20 return ((unsigned long long) (i_size_read(inode) + PAGE_CACHE_SIZE - 1))
24 static unsigned int dir_buckets(unsigned int level, int dir_level)
26 if (level + dir_level < MAX_DIR_HASH_DEPTH / 2)
27 return 1 << (level + dir_level);
29 return MAX_DIR_BUCKETS;
32 static unsigned int bucket_blocks(unsigned int level)
34 if (level < MAX_DIR_HASH_DEPTH / 2)
40 unsigned char f2fs_filetype_table[F2FS_FT_MAX] = {
41 [F2FS_FT_UNKNOWN] = DT_UNKNOWN,
42 [F2FS_FT_REG_FILE] = DT_REG,
43 [F2FS_FT_DIR] = DT_DIR,
44 [F2FS_FT_CHRDEV] = DT_CHR,
45 [F2FS_FT_BLKDEV] = DT_BLK,
46 [F2FS_FT_FIFO] = DT_FIFO,
47 [F2FS_FT_SOCK] = DT_SOCK,
48 [F2FS_FT_SYMLINK] = DT_LNK,
52 static unsigned char f2fs_type_by_mode[S_IFMT >> S_SHIFT] = {
53 [S_IFREG >> S_SHIFT] = F2FS_FT_REG_FILE,
54 [S_IFDIR >> S_SHIFT] = F2FS_FT_DIR,
55 [S_IFCHR >> S_SHIFT] = F2FS_FT_CHRDEV,
56 [S_IFBLK >> S_SHIFT] = F2FS_FT_BLKDEV,
57 [S_IFIFO >> S_SHIFT] = F2FS_FT_FIFO,
58 [S_IFSOCK >> S_SHIFT] = F2FS_FT_SOCK,
59 [S_IFLNK >> S_SHIFT] = F2FS_FT_SYMLINK,
62 void set_de_type(struct f2fs_dir_entry *de, umode_t mode)
64 de->file_type = f2fs_type_by_mode[(mode & S_IFMT) >> S_SHIFT];
67 static unsigned long dir_block_index(unsigned int level,
68 int dir_level, unsigned int idx)
71 unsigned long bidx = 0;
73 for (i = 0; i < level; i++)
74 bidx += dir_buckets(i, dir_level) * bucket_blocks(i);
75 bidx += idx * bucket_blocks(level);
79 static struct f2fs_dir_entry *find_in_block(struct page *dentry_page,
80 struct f2fs_filename *fname,
83 struct page **res_page)
85 struct f2fs_dentry_block *dentry_blk;
86 struct f2fs_dir_entry *de;
87 struct f2fs_dentry_ptr d;
89 dentry_blk = (struct f2fs_dentry_block *)kmap(dentry_page);
91 make_dentry_ptr(NULL, &d, (void *)dentry_blk, 1);
92 de = find_target_dentry(fname, namehash, max_slots, &d);
94 *res_page = dentry_page;
99 * For the most part, it should be a bug when name_len is zero.
100 * We stop here for figuring out where the bugs has occurred.
102 f2fs_bug_on(F2FS_P_SB(dentry_page), d.max < 0);
106 struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *fname,
107 f2fs_hash_t namehash, int *max_slots,
108 struct f2fs_dentry_ptr *d)
110 struct f2fs_dir_entry *de;
111 unsigned long bit_pos = 0;
113 struct f2fs_str de_name = FSTR_INIT(NULL, 0);
114 struct f2fs_str *name = &fname->disk_name;
118 while (bit_pos < d->max) {
119 if (!test_bit_le(bit_pos, d->bitmap)) {
125 de = &d->dentry[bit_pos];
128 de_name.name = d->filename[bit_pos];
129 de_name.len = le16_to_cpu(de->name_len);
131 /* show encrypted name */
133 if (de->hash_code == fname->hash)
135 } else if (de_name.len == name->len &&
136 de->hash_code == namehash &&
137 !memcmp(de_name.name, name->name, name->len))
140 if (max_slots && max_len > *max_slots)
141 *max_slots = max_len;
144 /* remain bug on condition */
145 if (unlikely(!de->name_len))
148 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
153 if (max_slots && max_len > *max_slots)
154 *max_slots = max_len;
158 static struct f2fs_dir_entry *find_in_level(struct inode *dir,
160 struct f2fs_filename *fname,
161 struct page **res_page)
163 struct qstr name = FSTR_TO_QSTR(&fname->disk_name);
164 int s = GET_DENTRY_SLOTS(name.len);
165 unsigned int nbucket, nblock;
166 unsigned int bidx, end_block;
167 struct page *dentry_page;
168 struct f2fs_dir_entry *de = NULL;
171 f2fs_hash_t namehash;
173 namehash = f2fs_dentry_hash(&name);
175 f2fs_bug_on(F2FS_I_SB(dir), level > MAX_DIR_HASH_DEPTH);
177 nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level);
178 nblock = bucket_blocks(level);
180 bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level,
181 le32_to_cpu(namehash) % nbucket);
182 end_block = bidx + nblock;
184 for (; bidx < end_block; bidx++) {
185 /* no need to allocate new dentry pages to all the indices */
186 dentry_page = find_data_page(dir, bidx);
187 if (IS_ERR(dentry_page)) {
192 de = find_in_block(dentry_page, fname, namehash, &max_slots,
199 f2fs_put_page(dentry_page, 0);
202 if (!de && room && F2FS_I(dir)->chash != namehash) {
203 F2FS_I(dir)->chash = namehash;
204 F2FS_I(dir)->clevel = level;
211 * Find an entry in the specified directory with the wanted name.
212 * It returns the page where the entry was found (as a parameter - res_page),
213 * and the entry itself. Page is returned mapped and unlocked.
214 * Entry is guaranteed to be valid.
216 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
217 struct qstr *child, struct page **res_page)
219 unsigned long npages = dir_blocks(dir);
220 struct f2fs_dir_entry *de = NULL;
221 unsigned int max_depth;
223 struct f2fs_filename fname;
228 err = f2fs_fname_setup_filename(dir, child, 1, &fname);
232 if (f2fs_has_inline_dentry(dir)) {
233 de = find_in_inline_dir(dir, &fname, res_page);
240 max_depth = F2FS_I(dir)->i_current_depth;
242 for (level = 0; level < max_depth; level++) {
243 de = find_in_level(dir, level, &fname, res_page);
248 f2fs_fname_free_filename(&fname);
252 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p)
255 struct f2fs_dir_entry *de;
256 struct f2fs_dentry_block *dentry_blk;
258 if (f2fs_has_inline_dentry(dir))
259 return f2fs_parent_inline_dir(dir, p);
261 page = get_lock_data_page(dir, 0, false);
265 dentry_blk = kmap(page);
266 de = &dentry_blk->dentry[1];
272 ino_t f2fs_inode_by_name(struct inode *dir, struct qstr *qstr)
275 struct f2fs_dir_entry *de;
278 de = f2fs_find_entry(dir, qstr, &page);
280 res = le32_to_cpu(de->ino);
281 f2fs_dentry_kunmap(dir, page);
282 f2fs_put_page(page, 0);
288 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
289 struct page *page, struct inode *inode)
291 enum page_type type = f2fs_has_inline_dentry(dir) ? NODE : DATA;
293 f2fs_wait_on_page_writeback(page, type);
294 de->ino = cpu_to_le32(inode->i_ino);
295 set_de_type(de, inode->i_mode);
296 f2fs_dentry_kunmap(dir, page);
297 set_page_dirty(page);
298 dir->i_mtime = dir->i_ctime = CURRENT_TIME;
299 mark_inode_dirty(dir);
301 f2fs_put_page(page, 1);
304 static void init_dent_inode(const struct qstr *name, struct page *ipage)
306 struct f2fs_inode *ri;
308 f2fs_wait_on_page_writeback(ipage, NODE);
310 /* copy name info. to this inode page */
311 ri = F2FS_INODE(ipage);
312 ri->i_namelen = cpu_to_le32(name->len);
313 memcpy(ri->i_name, name->name, name->len);
314 set_page_dirty(ipage);
317 int update_dent_inode(struct inode *inode, struct inode *to,
318 const struct qstr *name)
322 if (file_enc_name(to))
325 page = get_node_page(F2FS_I_SB(inode), inode->i_ino);
327 return PTR_ERR(page);
329 init_dent_inode(name, page);
330 f2fs_put_page(page, 1);
335 void do_make_empty_dir(struct inode *inode, struct inode *parent,
336 struct f2fs_dentry_ptr *d)
338 struct f2fs_dir_entry *de;
341 de->name_len = cpu_to_le16(1);
343 de->ino = cpu_to_le32(inode->i_ino);
344 memcpy(d->filename[0], ".", 1);
345 set_de_type(de, inode->i_mode);
349 de->name_len = cpu_to_le16(2);
350 de->ino = cpu_to_le32(parent->i_ino);
351 memcpy(d->filename[1], "..", 2);
352 set_de_type(de, parent->i_mode);
354 test_and_set_bit_le(0, (void *)d->bitmap);
355 test_and_set_bit_le(1, (void *)d->bitmap);
358 static int make_empty_dir(struct inode *inode,
359 struct inode *parent, struct page *page)
361 struct page *dentry_page;
362 struct f2fs_dentry_block *dentry_blk;
363 struct f2fs_dentry_ptr d;
365 if (f2fs_has_inline_dentry(inode))
366 return make_empty_inline_dir(inode, parent, page);
368 dentry_page = get_new_data_page(inode, page, 0, true);
369 if (IS_ERR(dentry_page))
370 return PTR_ERR(dentry_page);
372 dentry_blk = kmap_atomic(dentry_page);
374 make_dentry_ptr(NULL, &d, (void *)dentry_blk, 1);
375 do_make_empty_dir(inode, parent, &d);
377 kunmap_atomic(dentry_blk);
379 set_page_dirty(dentry_page);
380 f2fs_put_page(dentry_page, 1);
384 struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
385 const struct qstr *name, struct page *dpage)
390 if (is_inode_flag_set(F2FS_I(inode), FI_NEW_INODE)) {
391 page = new_inode_page(inode);
395 if (S_ISDIR(inode->i_mode)) {
396 err = make_empty_dir(inode, dir, page);
401 err = f2fs_init_acl(inode, dir, page, dpage);
405 err = f2fs_init_security(inode, dir, name, page);
409 if (f2fs_encrypted_inode(dir) && f2fs_may_encrypt(inode)) {
410 err = f2fs_inherit_context(dir, inode, page);
415 page = get_node_page(F2FS_I_SB(dir), inode->i_ino);
419 set_cold_node(inode, page);
423 init_dent_inode(name, page);
426 * This file should be checkpointed during fsync.
427 * We lost i_pino from now on.
429 if (is_inode_flag_set(F2FS_I(inode), FI_INC_LINK)) {
430 file_lost_pino(inode);
432 * If link the tmpfile to alias through linkat path,
433 * we should remove this inode from orphan list.
435 if (inode->i_nlink == 0)
436 remove_orphan_inode(F2FS_I_SB(dir), inode->i_ino);
442 f2fs_put_page(page, 1);
444 /* once the failed inode becomes a bad inode, i_mode is S_IFREG */
445 truncate_inode_pages(&inode->i_data, 0);
446 truncate_blocks(inode, 0, false);
447 remove_dirty_dir_inode(inode);
448 remove_inode_page(inode);
452 void update_parent_metadata(struct inode *dir, struct inode *inode,
453 unsigned int current_depth)
455 if (inode && is_inode_flag_set(F2FS_I(inode), FI_NEW_INODE)) {
456 if (S_ISDIR(inode->i_mode)) {
458 set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR);
460 clear_inode_flag(F2FS_I(inode), FI_NEW_INODE);
462 dir->i_mtime = dir->i_ctime = CURRENT_TIME;
463 mark_inode_dirty(dir);
465 if (F2FS_I(dir)->i_current_depth != current_depth) {
466 F2FS_I(dir)->i_current_depth = current_depth;
467 set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR);
470 if (inode && is_inode_flag_set(F2FS_I(inode), FI_INC_LINK))
471 clear_inode_flag(F2FS_I(inode), FI_INC_LINK);
474 int room_for_filename(const void *bitmap, int slots, int max_slots)
477 int zero_start, zero_end;
479 zero_start = find_next_zero_bit_le(bitmap, max_slots, bit_start);
480 if (zero_start >= max_slots)
483 zero_end = find_next_bit_le(bitmap, max_slots, zero_start);
484 if (zero_end - zero_start >= slots)
487 bit_start = zero_end + 1;
489 if (zero_end + 1 >= max_slots)
494 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
495 const struct qstr *name, f2fs_hash_t name_hash,
496 unsigned int bit_pos)
498 struct f2fs_dir_entry *de;
499 int slots = GET_DENTRY_SLOTS(name->len);
502 de = &d->dentry[bit_pos];
503 de->hash_code = name_hash;
504 de->name_len = cpu_to_le16(name->len);
505 memcpy(d->filename[bit_pos], name->name, name->len);
506 de->ino = cpu_to_le32(ino);
507 set_de_type(de, mode);
508 for (i = 0; i < slots; i++)
509 test_and_set_bit_le(bit_pos + i, (void *)d->bitmap);
513 * Caller should grab and release a rwsem by calling f2fs_lock_op() and
516 int __f2fs_add_link(struct inode *dir, const struct qstr *name,
517 struct inode *inode, nid_t ino, umode_t mode)
519 unsigned int bit_pos;
521 unsigned int current_depth;
522 unsigned long bidx, block;
523 f2fs_hash_t dentry_hash;
524 unsigned int nbucket, nblock;
525 struct page *dentry_page = NULL;
526 struct f2fs_dentry_block *dentry_blk = NULL;
527 struct f2fs_dentry_ptr d;
528 struct page *page = NULL;
529 struct f2fs_filename fname;
530 struct qstr new_name;
533 err = f2fs_fname_setup_filename(dir, name, 0, &fname);
537 new_name.name = fname_name(&fname);
538 new_name.len = fname_len(&fname);
540 if (f2fs_has_inline_dentry(dir)) {
541 err = f2fs_add_inline_entry(dir, &new_name, inode, ino, mode);
542 if (!err || err != -EAGAIN)
549 slots = GET_DENTRY_SLOTS(new_name.len);
550 dentry_hash = f2fs_dentry_hash(&new_name);
552 current_depth = F2FS_I(dir)->i_current_depth;
553 if (F2FS_I(dir)->chash == dentry_hash) {
554 level = F2FS_I(dir)->clevel;
555 F2FS_I(dir)->chash = 0;
559 if (unlikely(current_depth == MAX_DIR_HASH_DEPTH)) {
564 /* Increase the depth, if required */
565 if (level == current_depth)
568 nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level);
569 nblock = bucket_blocks(level);
571 bidx = dir_block_index(level, F2FS_I(dir)->i_dir_level,
572 (le32_to_cpu(dentry_hash) % nbucket));
574 for (block = bidx; block <= (bidx + nblock - 1); block++) {
575 dentry_page = get_new_data_page(dir, NULL, block, true);
576 if (IS_ERR(dentry_page)) {
577 err = PTR_ERR(dentry_page);
581 dentry_blk = kmap(dentry_page);
582 bit_pos = room_for_filename(&dentry_blk->dentry_bitmap,
583 slots, NR_DENTRY_IN_BLOCK);
584 if (bit_pos < NR_DENTRY_IN_BLOCK)
588 f2fs_put_page(dentry_page, 1);
591 /* Move to next level to find the empty slot for new dentry */
595 f2fs_wait_on_page_writeback(dentry_page, DATA);
598 down_write(&F2FS_I(inode)->i_sem);
599 page = init_inode_metadata(inode, dir, &new_name, NULL);
604 if (f2fs_encrypted_inode(dir))
605 file_set_enc_name(inode);
608 make_dentry_ptr(NULL, &d, (void *)dentry_blk, 1);
609 f2fs_update_dentry(ino, mode, &d, &new_name, dentry_hash, bit_pos);
611 set_page_dirty(dentry_page);
614 /* we don't need to mark_inode_dirty now */
615 F2FS_I(inode)->i_pino = dir->i_ino;
616 update_inode(inode, page);
617 f2fs_put_page(page, 1);
620 update_parent_metadata(dir, inode, current_depth);
623 up_write(&F2FS_I(inode)->i_sem);
625 if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) {
626 update_inode_page(dir);
627 clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR);
630 f2fs_put_page(dentry_page, 1);
632 f2fs_fname_free_filename(&fname);
636 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir)
641 down_write(&F2FS_I(inode)->i_sem);
642 page = init_inode_metadata(inode, dir, NULL, NULL);
647 /* we don't need to mark_inode_dirty now */
648 update_inode(inode, page);
649 f2fs_put_page(page, 1);
651 clear_inode_flag(F2FS_I(inode), FI_NEW_INODE);
653 up_write(&F2FS_I(inode)->i_sem);
657 void f2fs_drop_nlink(struct inode *dir, struct inode *inode, struct page *page)
659 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
661 down_write(&F2FS_I(inode)->i_sem);
663 if (S_ISDIR(inode->i_mode)) {
666 update_inode(dir, page);
668 update_inode_page(dir);
670 inode->i_ctime = CURRENT_TIME;
673 if (S_ISDIR(inode->i_mode)) {
675 i_size_write(inode, 0);
677 up_write(&F2FS_I(inode)->i_sem);
678 update_inode_page(inode);
680 if (inode->i_nlink == 0)
681 add_orphan_inode(sbi, inode->i_ino);
683 release_orphan_inode(sbi);
687 * It only removes the dentry from the dentry page, corresponding name
688 * entry in name page does not need to be touched during deletion.
690 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
691 struct inode *dir, struct inode *inode)
693 struct f2fs_dentry_block *dentry_blk;
694 unsigned int bit_pos;
695 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
698 if (f2fs_has_inline_dentry(dir))
699 return f2fs_delete_inline_entry(dentry, page, dir, inode);
702 f2fs_wait_on_page_writeback(page, DATA);
704 dentry_blk = page_address(page);
705 bit_pos = dentry - dentry_blk->dentry;
706 for (i = 0; i < slots; i++)
707 clear_bit_le(bit_pos + i, &dentry_blk->dentry_bitmap);
709 /* Let's check and deallocate this dentry page */
710 bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap,
713 kunmap(page); /* kunmap - pair of f2fs_find_entry */
714 set_page_dirty(page);
716 dir->i_ctime = dir->i_mtime = CURRENT_TIME;
719 f2fs_drop_nlink(dir, inode, NULL);
721 if (bit_pos == NR_DENTRY_IN_BLOCK &&
722 !truncate_hole(dir, page->index, page->index + 1)) {
723 clear_page_dirty_for_io(page);
724 ClearPagePrivate(page);
725 ClearPageUptodate(page);
726 inode_dec_dirty_pages(dir);
728 f2fs_put_page(page, 1);
731 bool f2fs_empty_dir(struct inode *dir)
734 struct page *dentry_page;
735 unsigned int bit_pos;
736 struct f2fs_dentry_block *dentry_blk;
737 unsigned long nblock = dir_blocks(dir);
739 if (f2fs_has_inline_dentry(dir))
740 return f2fs_empty_inline_dir(dir);
742 for (bidx = 0; bidx < nblock; bidx++) {
743 dentry_page = get_lock_data_page(dir, bidx, false);
744 if (IS_ERR(dentry_page)) {
745 if (PTR_ERR(dentry_page) == -ENOENT)
751 dentry_blk = kmap_atomic(dentry_page);
756 bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap,
759 kunmap_atomic(dentry_blk);
761 f2fs_put_page(dentry_page, 1);
763 if (bit_pos < NR_DENTRY_IN_BLOCK)
769 bool f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
770 unsigned int start_pos, struct f2fs_str *fstr)
772 unsigned char d_type = DT_UNKNOWN;
773 unsigned int bit_pos;
774 struct f2fs_dir_entry *de = NULL;
775 struct f2fs_str de_name = FSTR_INIT(NULL, 0);
777 bit_pos = ((unsigned long)ctx->pos % d->max);
779 while (bit_pos < d->max) {
780 bit_pos = find_next_bit_le(d->bitmap, d->max, bit_pos);
781 if (bit_pos >= d->max)
784 de = &d->dentry[bit_pos];
785 if (de->file_type < F2FS_FT_MAX)
786 d_type = f2fs_filetype_table[de->file_type];
790 de_name.name = d->filename[bit_pos];
791 de_name.len = le16_to_cpu(de->name_len);
793 if (f2fs_encrypted_inode(d->inode)) {
794 int save_len = fstr->len;
797 de_name.name = kmalloc(de_name.len, GFP_NOFS);
801 memcpy(de_name.name, d->filename[bit_pos], de_name.len);
803 ret = f2fs_fname_disk_to_usr(d->inode, &de->hash_code,
810 fstr->len = save_len;
813 if (!dir_emit(ctx, de_name.name, de_name.len,
814 le32_to_cpu(de->ino), d_type))
817 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
818 ctx->pos = start_pos + bit_pos;
823 static int f2fs_readdir(struct file *file, struct dir_context *ctx)
825 struct inode *inode = file_inode(file);
826 unsigned long npages = dir_blocks(inode);
827 struct f2fs_dentry_block *dentry_blk = NULL;
828 struct page *dentry_page = NULL;
829 struct file_ra_state *ra = &file->f_ra;
830 unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK);
831 struct f2fs_dentry_ptr d;
832 struct f2fs_str fstr = FSTR_INIT(NULL, 0);
835 if (f2fs_encrypted_inode(inode)) {
836 err = f2fs_get_encryption_info(inode);
840 err = f2fs_fname_crypto_alloc_buffer(inode, F2FS_NAME_LEN,
846 if (f2fs_has_inline_dentry(inode)) {
847 err = f2fs_read_inline_dir(file, ctx, &fstr);
851 /* readahead for multi pages of dir */
852 if (npages - n > 1 && !ra_has_index(ra, n))
853 page_cache_sync_readahead(inode->i_mapping, ra, file, n,
854 min(npages - n, (pgoff_t)MAX_DIR_RA_PAGES));
856 for (; n < npages; n++) {
857 dentry_page = get_lock_data_page(inode, n, false);
858 if (IS_ERR(dentry_page)) {
859 err = PTR_ERR(dentry_page);
866 dentry_blk = kmap(dentry_page);
868 make_dentry_ptr(inode, &d, (void *)dentry_blk, 1);
870 if (f2fs_fill_dentries(ctx, &d, n * NR_DENTRY_IN_BLOCK, &fstr)) {
872 f2fs_put_page(dentry_page, 1);
876 ctx->pos = (n + 1) * NR_DENTRY_IN_BLOCK;
878 f2fs_put_page(dentry_page, 1);
881 f2fs_fname_crypto_free_buffer(&fstr);
885 const struct file_operations f2fs_dir_operations = {
886 .llseek = generic_file_llseek,
887 .read = generic_read_dir,
888 .iterate = f2fs_readdir,
889 .fsync = f2fs_sync_file,
890 .unlocked_ioctl = f2fs_ioctl,
892 .compat_ioctl = f2fs_compat_ioctl,