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11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/buffer_head.h>
14#include <linux/mpage.h>
15#include <linux/aio.h>
16#include <linux/writeback.h>
17#include <linux/backing-dev.h>
18#include <linux/blkdev.h>
19#include <linux/bio.h>
20#include <linux/prefetch.h>
21
22#include "f2fs.h"
23#include "node.h"
24#include "segment.h"
25#include <trace/events/f2fs.h>
26
27
28
29
30
31
32
33static void __set_data_blkaddr(struct dnode_of_data *dn, block_t new_addr)
34{
35 struct f2fs_node *rn;
36 __le32 *addr_array;
37 struct page *node_page = dn->node_page;
38 unsigned int ofs_in_node = dn->ofs_in_node;
39
40 f2fs_wait_on_page_writeback(node_page, NODE, false);
41
42 rn = F2FS_NODE(node_page);
43
44
45 addr_array = blkaddr_in_node(rn);
46 addr_array[ofs_in_node] = cpu_to_le32(new_addr);
47 set_page_dirty(node_page);
48}
49
50int reserve_new_block(struct dnode_of_data *dn)
51{
52 struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb);
53
54 if (is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))
55 return -EPERM;
56 if (!inc_valid_block_count(sbi, dn->inode, 1))
57 return -ENOSPC;
58
59 trace_f2fs_reserve_new_block(dn->inode, dn->nid, dn->ofs_in_node);
60
61 __set_data_blkaddr(dn, NEW_ADDR);
62 dn->data_blkaddr = NEW_ADDR;
63 sync_inode_page(dn);
64 return 0;
65}
66
67static int check_extent_cache(struct inode *inode, pgoff_t pgofs,
68 struct buffer_head *bh_result)
69{
70 struct f2fs_inode_info *fi = F2FS_I(inode);
71#ifdef CONFIG_F2FS_STAT_FS
72 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
73#endif
74 pgoff_t start_fofs, end_fofs;
75 block_t start_blkaddr;
76
77 read_lock(&fi->ext.ext_lock);
78 if (fi->ext.len == 0) {
79 read_unlock(&fi->ext.ext_lock);
80 return 0;
81 }
82
83#ifdef CONFIG_F2FS_STAT_FS
84 sbi->total_hit_ext++;
85#endif
86 start_fofs = fi->ext.fofs;
87 end_fofs = fi->ext.fofs + fi->ext.len - 1;
88 start_blkaddr = fi->ext.blk_addr;
89
90 if (pgofs >= start_fofs && pgofs <= end_fofs) {
91 unsigned int blkbits = inode->i_sb->s_blocksize_bits;
92 size_t count;
93
94 clear_buffer_new(bh_result);
95 map_bh(bh_result, inode->i_sb,
96 start_blkaddr + pgofs - start_fofs);
97 count = end_fofs - pgofs + 1;
98 if (count < (UINT_MAX >> blkbits))
99 bh_result->b_size = (count << blkbits);
100 else
101 bh_result->b_size = UINT_MAX;
102
103#ifdef CONFIG_F2FS_STAT_FS
104 sbi->read_hit_ext++;
105#endif
106 read_unlock(&fi->ext.ext_lock);
107 return 1;
108 }
109 read_unlock(&fi->ext.ext_lock);
110 return 0;
111}
112
113void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn)
114{
115 struct f2fs_inode_info *fi = F2FS_I(dn->inode);
116 pgoff_t fofs, start_fofs, end_fofs;
117 block_t start_blkaddr, end_blkaddr;
118
119 BUG_ON(blk_addr == NEW_ADDR);
120 fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) +
121 dn->ofs_in_node;
122
123
124 __set_data_blkaddr(dn, blk_addr);
125
126 write_lock(&fi->ext.ext_lock);
127
128 start_fofs = fi->ext.fofs;
129 end_fofs = fi->ext.fofs + fi->ext.len - 1;
130 start_blkaddr = fi->ext.blk_addr;
131 end_blkaddr = fi->ext.blk_addr + fi->ext.len - 1;
132
133
134 if (fi->ext.len == 1 && fofs == start_fofs)
135 fi->ext.len = 0;
136
137
138 if (fi->ext.len == 0) {
139 if (blk_addr != NULL_ADDR) {
140 fi->ext.fofs = fofs;
141 fi->ext.blk_addr = blk_addr;
142 fi->ext.len = 1;
143 }
144 goto end_update;
145 }
146
147
148 if (fofs == start_fofs - 1 && blk_addr == start_blkaddr - 1) {
149 fi->ext.fofs--;
150 fi->ext.blk_addr--;
151 fi->ext.len++;
152 goto end_update;
153 }
154
155
156 if (fofs == end_fofs + 1 && blk_addr == end_blkaddr + 1) {
157 fi->ext.len++;
158 goto end_update;
159 }
160
161
162 if (fi->ext.len > 1 &&
163 fofs >= start_fofs && fofs <= end_fofs) {
164 if ((end_fofs - fofs) < (fi->ext.len >> 1)) {
165 fi->ext.len = fofs - start_fofs;
166 } else {
167 fi->ext.fofs = fofs + 1;
168 fi->ext.blk_addr = start_blkaddr +
169 fofs - start_fofs + 1;
170 fi->ext.len -= fofs - start_fofs + 1;
171 }
172 goto end_update;
173 }
174 write_unlock(&fi->ext.ext_lock);
175 return;
176
177end_update:
178 write_unlock(&fi->ext.ext_lock);
179 sync_inode_page(dn);
180}
181
182struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync)
183{
184 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
185 struct address_space *mapping = inode->i_mapping;
186 struct dnode_of_data dn;
187 struct page *page;
188 int err;
189
190 page = find_get_page(mapping, index);
191 if (page && PageUptodate(page))
192 return page;
193 f2fs_put_page(page, 0);
194
195 set_new_dnode(&dn, inode, NULL, NULL, 0);
196 err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
197 if (err)
198 return ERR_PTR(err);
199 f2fs_put_dnode(&dn);
200
201 if (dn.data_blkaddr == NULL_ADDR)
202 return ERR_PTR(-ENOENT);
203
204
205 if (dn.data_blkaddr == NEW_ADDR)
206 return ERR_PTR(-EINVAL);
207
208 page = grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
209 if (!page)
210 return ERR_PTR(-ENOMEM);
211
212 if (PageUptodate(page)) {
213 unlock_page(page);
214 return page;
215 }
216
217 err = f2fs_readpage(sbi, page, dn.data_blkaddr,
218 sync ? READ_SYNC : READA);
219 if (sync) {
220 wait_on_page_locked(page);
221 if (!PageUptodate(page)) {
222 f2fs_put_page(page, 0);
223 return ERR_PTR(-EIO);
224 }
225 }
226 return page;
227}
228
229
230
231
232
233
234struct page *get_lock_data_page(struct inode *inode, pgoff_t index)
235{
236 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
237 struct address_space *mapping = inode->i_mapping;
238 struct dnode_of_data dn;
239 struct page *page;
240 int err;
241
242repeat:
243 page = grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
244 if (!page)
245 return ERR_PTR(-ENOMEM);
246
247 set_new_dnode(&dn, inode, NULL, NULL, 0);
248 err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
249 if (err) {
250 f2fs_put_page(page, 1);
251 return ERR_PTR(err);
252 }
253 f2fs_put_dnode(&dn);
254
255 if (dn.data_blkaddr == NULL_ADDR) {
256 f2fs_put_page(page, 1);
257 return ERR_PTR(-ENOENT);
258 }
259
260 if (PageUptodate(page))
261 return page;
262
263
264
265
266
267
268
269 if (dn.data_blkaddr == NEW_ADDR) {
270 zero_user_segment(page, 0, PAGE_CACHE_SIZE);
271 SetPageUptodate(page);
272 return page;
273 }
274
275 err = f2fs_readpage(sbi, page, dn.data_blkaddr, READ_SYNC);
276 if (err)
277 return ERR_PTR(err);
278
279 lock_page(page);
280 if (!PageUptodate(page)) {
281 f2fs_put_page(page, 1);
282 return ERR_PTR(-EIO);
283 }
284 if (page->mapping != mapping) {
285 f2fs_put_page(page, 1);
286 goto repeat;
287 }
288 return page;
289}
290
291
292
293
294
295
296
297
298
299struct page *get_new_data_page(struct inode *inode,
300 struct page *npage, pgoff_t index, bool new_i_size)
301{
302 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
303 struct address_space *mapping = inode->i_mapping;
304 struct page *page;
305 struct dnode_of_data dn;
306 int err;
307
308 set_new_dnode(&dn, inode, npage, npage, 0);
309 err = get_dnode_of_data(&dn, index, ALLOC_NODE);
310 if (err)
311 return ERR_PTR(err);
312
313 if (dn.data_blkaddr == NULL_ADDR) {
314 if (reserve_new_block(&dn)) {
315 if (!npage)
316 f2fs_put_dnode(&dn);
317 return ERR_PTR(-ENOSPC);
318 }
319 }
320 if (!npage)
321 f2fs_put_dnode(&dn);
322repeat:
323 page = grab_cache_page(mapping, index);
324 if (!page)
325 return ERR_PTR(-ENOMEM);
326
327 if (PageUptodate(page))
328 return page;
329
330 if (dn.data_blkaddr == NEW_ADDR) {
331 zero_user_segment(page, 0, PAGE_CACHE_SIZE);
332 SetPageUptodate(page);
333 } else {
334 err = f2fs_readpage(sbi, page, dn.data_blkaddr, READ_SYNC);
335 if (err)
336 return ERR_PTR(err);
337 lock_page(page);
338 if (!PageUptodate(page)) {
339 f2fs_put_page(page, 1);
340 return ERR_PTR(-EIO);
341 }
342 if (page->mapping != mapping) {
343 f2fs_put_page(page, 1);
344 goto repeat;
345 }
346 }
347
348 if (new_i_size &&
349 i_size_read(inode) < ((index + 1) << PAGE_CACHE_SHIFT)) {
350 i_size_write(inode, ((index + 1) << PAGE_CACHE_SHIFT));
351
352 set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR);
353 mark_inode_dirty_sync(inode);
354 }
355 return page;
356}
357
358static void read_end_io(struct bio *bio, int err)
359{
360 const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
361 struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
362
363 do {
364 struct page *page = bvec->bv_page;
365
366 if (--bvec >= bio->bi_io_vec)
367 prefetchw(&bvec->bv_page->flags);
368
369 if (uptodate) {
370 SetPageUptodate(page);
371 } else {
372 ClearPageUptodate(page);
373 SetPageError(page);
374 }
375 unlock_page(page);
376 } while (bvec >= bio->bi_io_vec);
377 bio_put(bio);
378}
379
380
381
382
383
384int f2fs_readpage(struct f2fs_sb_info *sbi, struct page *page,
385 block_t blk_addr, int type)
386{
387 struct block_device *bdev = sbi->sb->s_bdev;
388 struct bio *bio;
389
390 trace_f2fs_readpage(page, blk_addr, type);
391
392 down_read(&sbi->bio_sem);
393
394
395 bio = f2fs_bio_alloc(bdev, 1);
396
397
398 bio->bi_sector = SECTOR_FROM_BLOCK(sbi, blk_addr);
399 bio->bi_end_io = read_end_io;
400
401 if (bio_add_page(bio, page, PAGE_CACHE_SIZE, 0) < PAGE_CACHE_SIZE) {
402 bio_put(bio);
403 up_read(&sbi->bio_sem);
404 f2fs_put_page(page, 1);
405 return -EFAULT;
406 }
407
408 submit_bio(type, bio);
409 up_read(&sbi->bio_sem);
410 return 0;
411}
412
413
414
415
416
417
418
419static int get_data_block_ro(struct inode *inode, sector_t iblock,
420 struct buffer_head *bh_result, int create)
421{
422 unsigned int blkbits = inode->i_sb->s_blocksize_bits;
423 unsigned maxblocks = bh_result->b_size >> blkbits;
424 struct dnode_of_data dn;
425 pgoff_t pgofs;
426 int err;
427
428
429 pgofs = (pgoff_t)(iblock >> (PAGE_CACHE_SHIFT - blkbits));
430
431 if (check_extent_cache(inode, pgofs, bh_result)) {
432 trace_f2fs_get_data_block(inode, iblock, bh_result, 0);
433 return 0;
434 }
435
436
437 set_new_dnode(&dn, inode, NULL, NULL, 0);
438 err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA);
439 if (err) {
440 trace_f2fs_get_data_block(inode, iblock, bh_result, err);
441 return (err == -ENOENT) ? 0 : err;
442 }
443
444
445 BUG_ON(create);
446
447 if (dn.data_blkaddr != NEW_ADDR && dn.data_blkaddr != NULL_ADDR) {
448 int i;
449 unsigned int end_offset;
450
451 end_offset = IS_INODE(dn.node_page) ?
452 ADDRS_PER_INODE(F2FS_I(inode)) :
453 ADDRS_PER_BLOCK;
454
455 clear_buffer_new(bh_result);
456
457
458 for (i = 0; i < end_offset - dn.ofs_in_node; i++)
459 if (((datablock_addr(dn.node_page,
460 dn.ofs_in_node + i))
461 != (dn.data_blkaddr + i)) || maxblocks == i)
462 break;
463 map_bh(bh_result, inode->i_sb, dn.data_blkaddr);
464 bh_result->b_size = (i << blkbits);
465 }
466 f2fs_put_dnode(&dn);
467 trace_f2fs_get_data_block(inode, iblock, bh_result, 0);
468 return 0;
469}
470
471static int f2fs_read_data_page(struct file *file, struct page *page)
472{
473 return mpage_readpage(page, get_data_block_ro);
474}
475
476static int f2fs_read_data_pages(struct file *file,
477 struct address_space *mapping,
478 struct list_head *pages, unsigned nr_pages)
479{
480 return mpage_readpages(mapping, pages, nr_pages, get_data_block_ro);
481}
482
483int do_write_data_page(struct page *page)
484{
485 struct inode *inode = page->mapping->host;
486 block_t old_blk_addr, new_blk_addr;
487 struct dnode_of_data dn;
488 int err = 0;
489
490 set_new_dnode(&dn, inode, NULL, NULL, 0);
491 err = get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
492 if (err)
493 return err;
494
495 old_blk_addr = dn.data_blkaddr;
496
497
498 if (old_blk_addr == NULL_ADDR)
499 goto out_writepage;
500
501 set_page_writeback(page);
502
503
504
505
506
507 if (unlikely(old_blk_addr != NEW_ADDR &&
508 !is_cold_data(page) &&
509 need_inplace_update(inode))) {
510 rewrite_data_page(F2FS_SB(inode->i_sb), page,
511 old_blk_addr);
512 } else {
513 write_data_page(inode, page, &dn,
514 old_blk_addr, &new_blk_addr);
515 update_extent_cache(new_blk_addr, &dn);
516 }
517out_writepage:
518 f2fs_put_dnode(&dn);
519 return err;
520}
521
522static int f2fs_write_data_page(struct page *page,
523 struct writeback_control *wbc)
524{
525 struct inode *inode = page->mapping->host;
526 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
527 loff_t i_size = i_size_read(inode);
528 const pgoff_t end_index = ((unsigned long long) i_size)
529 >> PAGE_CACHE_SHIFT;
530 unsigned offset;
531 bool need_balance_fs = false;
532 int err = 0;
533
534 if (page->index < end_index)
535 goto write;
536
537
538
539
540
541 offset = i_size & (PAGE_CACHE_SIZE - 1);
542 if ((page->index >= end_index + 1) || !offset) {
543 if (S_ISDIR(inode->i_mode)) {
544 dec_page_count(sbi, F2FS_DIRTY_DENTS);
545 inode_dec_dirty_dents(inode);
546 }
547 goto out;
548 }
549
550 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
551write:
552 if (sbi->por_doing) {
553 err = AOP_WRITEPAGE_ACTIVATE;
554 goto redirty_out;
555 }
556
557
558 if (S_ISDIR(inode->i_mode)) {
559 dec_page_count(sbi, F2FS_DIRTY_DENTS);
560 inode_dec_dirty_dents(inode);
561 err = do_write_data_page(page);
562 } else {
563 int ilock = mutex_lock_op(sbi);
564 err = do_write_data_page(page);
565 mutex_unlock_op(sbi, ilock);
566 need_balance_fs = true;
567 }
568 if (err == -ENOENT)
569 goto out;
570 else if (err)
571 goto redirty_out;
572
573 if (wbc->for_reclaim)
574 f2fs_submit_bio(sbi, DATA, true);
575
576 clear_cold_data(page);
577out:
578 unlock_page(page);
579 if (need_balance_fs)
580 f2fs_balance_fs(sbi);
581 return 0;
582
583redirty_out:
584 wbc->pages_skipped++;
585 set_page_dirty(page);
586 return err;
587}
588
589#define MAX_DESIRED_PAGES_WP 4096
590
591static int __f2fs_writepage(struct page *page, struct writeback_control *wbc,
592 void *data)
593{
594 struct address_space *mapping = data;
595 int ret = mapping->a_ops->writepage(page, wbc);
596 mapping_set_error(mapping, ret);
597 return ret;
598}
599
600static int f2fs_write_data_pages(struct address_space *mapping,
601 struct writeback_control *wbc)
602{
603 struct inode *inode = mapping->host;
604 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
605 bool locked = false;
606 int ret;
607 long excess_nrtw = 0, desired_nrtw;
608
609
610 if (!mapping->a_ops->writepage)
611 return 0;
612
613 if (wbc->nr_to_write < MAX_DESIRED_PAGES_WP) {
614 desired_nrtw = MAX_DESIRED_PAGES_WP;
615 excess_nrtw = desired_nrtw - wbc->nr_to_write;
616 wbc->nr_to_write = desired_nrtw;
617 }
618
619 if (!S_ISDIR(inode->i_mode)) {
620 mutex_lock(&sbi->writepages);
621 locked = true;
622 }
623 ret = write_cache_pages(mapping, wbc, __f2fs_writepage, mapping);
624 if (locked)
625 mutex_unlock(&sbi->writepages);
626 f2fs_submit_bio(sbi, DATA, (wbc->sync_mode == WB_SYNC_ALL));
627
628 remove_dirty_dir_inode(inode);
629
630 wbc->nr_to_write -= excess_nrtw;
631 return ret;
632}
633
634static int f2fs_write_begin(struct file *file, struct address_space *mapping,
635 loff_t pos, unsigned len, unsigned flags,
636 struct page **pagep, void **fsdata)
637{
638 struct inode *inode = mapping->host;
639 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
640 struct page *page;
641 pgoff_t index = ((unsigned long long) pos) >> PAGE_CACHE_SHIFT;
642 struct dnode_of_data dn;
643 int err = 0;
644 int ilock;
645
646 f2fs_balance_fs(sbi);
647repeat:
648 page = grab_cache_page_write_begin(mapping, index, flags);
649 if (!page)
650 return -ENOMEM;
651 *pagep = page;
652
653 ilock = mutex_lock_op(sbi);
654
655 set_new_dnode(&dn, inode, NULL, NULL, 0);
656 err = get_dnode_of_data(&dn, index, ALLOC_NODE);
657 if (err)
658 goto err;
659
660 if (dn.data_blkaddr == NULL_ADDR)
661 err = reserve_new_block(&dn);
662
663 f2fs_put_dnode(&dn);
664 if (err)
665 goto err;
666
667 mutex_unlock_op(sbi, ilock);
668
669 if ((len == PAGE_CACHE_SIZE) || PageUptodate(page))
670 return 0;
671
672 if ((pos & PAGE_CACHE_MASK) >= i_size_read(inode)) {
673 unsigned start = pos & (PAGE_CACHE_SIZE - 1);
674 unsigned end = start + len;
675
676
677 zero_user_segments(page, 0, start, end, PAGE_CACHE_SIZE);
678 goto out;
679 }
680
681 if (dn.data_blkaddr == NEW_ADDR) {
682 zero_user_segment(page, 0, PAGE_CACHE_SIZE);
683 } else {
684 err = f2fs_readpage(sbi, page, dn.data_blkaddr, READ_SYNC);
685 if (err)
686 return err;
687 lock_page(page);
688 if (!PageUptodate(page)) {
689 f2fs_put_page(page, 1);
690 return -EIO;
691 }
692 if (page->mapping != mapping) {
693 f2fs_put_page(page, 1);
694 goto repeat;
695 }
696 }
697out:
698 SetPageUptodate(page);
699 clear_cold_data(page);
700 return 0;
701
702err:
703 mutex_unlock_op(sbi, ilock);
704 f2fs_put_page(page, 1);
705 return err;
706}
707
708static int f2fs_write_end(struct file *file,
709 struct address_space *mapping,
710 loff_t pos, unsigned len, unsigned copied,
711 struct page *page, void *fsdata)
712{
713 struct inode *inode = page->mapping->host;
714
715 SetPageUptodate(page);
716 set_page_dirty(page);
717
718 if (pos + copied > i_size_read(inode)) {
719 i_size_write(inode, pos + copied);
720 mark_inode_dirty(inode);
721 update_inode_page(inode);
722 }
723
724 unlock_page(page);
725 page_cache_release(page);
726 return copied;
727}
728
729static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb,
730 const struct iovec *iov, loff_t offset, unsigned long nr_segs)
731{
732 struct file *file = iocb->ki_filp;
733 struct inode *inode = file->f_mapping->host;
734
735 if (rw == WRITE)
736 return 0;
737
738
739 return blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
740 get_data_block_ro);
741}
742
743static void f2fs_invalidate_data_page(struct page *page, unsigned int offset,
744 unsigned int length)
745{
746 struct inode *inode = page->mapping->host;
747 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
748 if (S_ISDIR(inode->i_mode) && PageDirty(page)) {
749 dec_page_count(sbi, F2FS_DIRTY_DENTS);
750 inode_dec_dirty_dents(inode);
751 }
752 ClearPagePrivate(page);
753}
754
755static int f2fs_release_data_page(struct page *page, gfp_t wait)
756{
757 ClearPagePrivate(page);
758 return 1;
759}
760
761static int f2fs_set_data_page_dirty(struct page *page)
762{
763 struct address_space *mapping = page->mapping;
764 struct inode *inode = mapping->host;
765
766 SetPageUptodate(page);
767 if (!PageDirty(page)) {
768 __set_page_dirty_nobuffers(page);
769 set_dirty_dir_page(inode, page);
770 return 1;
771 }
772 return 0;
773}
774
775static sector_t f2fs_bmap(struct address_space *mapping, sector_t block)
776{
777 return generic_block_bmap(mapping, block, get_data_block_ro);
778}
779
780const struct address_space_operations f2fs_dblock_aops = {
781 .readpage = f2fs_read_data_page,
782 .readpages = f2fs_read_data_pages,
783 .writepage = f2fs_write_data_page,
784 .writepages = f2fs_write_data_pages,
785 .write_begin = f2fs_write_begin,
786 .write_end = f2fs_write_end,
787 .set_page_dirty = f2fs_set_data_page_dirty,
788 .invalidatepage = f2fs_invalidate_data_page,
789 .releasepage = f2fs_release_data_page,
790 .direct_IO = f2fs_direct_IO,
791 .bmap = f2fs_bmap,
792};
793