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/stat.h>
14 #include <linux/buffer_head.h>
15 #include <linux/writeback.h>
16 #include <linux/blkdev.h>
17 #include <linux/falloc.h>
18 #include <linux/types.h>
19 #include <linux/compat.h>
20 #include <linux/uaccess.h>
21 #include <linux/mount.h>
22 #include <linux/pagevec.h>
23 #include <linux/random.h>
32 #include <trace/events/f2fs.h>
34 static int f2fs_vm_page_mkwrite(struct vm_area_struct
*vma
,
37 struct page
*page
= vmf
->page
;
38 struct inode
*inode
= file_inode(vma
->vm_file
);
39 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
40 struct dnode_of_data dn
;
43 sb_start_pagefault(inode
->i_sb
);
45 f2fs_bug_on(sbi
, f2fs_has_inline_data(inode
));
47 /* block allocation */
49 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
50 err
= f2fs_reserve_block(&dn
, page
->index
);
58 f2fs_balance_fs(sbi
, dn
.node_changed
);
60 file_update_time(vma
->vm_file
);
62 if (unlikely(page
->mapping
!= inode
->i_mapping
||
63 page_offset(page
) > i_size_read(inode
) ||
64 !PageUptodate(page
))) {
71 * check to see if the page is mapped already (no holes)
73 if (PageMappedToDisk(page
))
76 /* page is wholly or partially inside EOF */
77 if (((loff_t
)(page
->index
+ 1) << PAGE_CACHE_SHIFT
) >
80 offset
= i_size_read(inode
) & ~PAGE_CACHE_MASK
;
81 zero_user_segment(page
, offset
, PAGE_CACHE_SIZE
);
84 SetPageUptodate(page
);
86 trace_f2fs_vm_page_mkwrite(page
, DATA
);
89 f2fs_wait_on_page_writeback(page
, DATA
);
91 /* wait for GCed encrypted page writeback */
92 if (f2fs_encrypted_inode(inode
) && S_ISREG(inode
->i_mode
))
93 f2fs_wait_on_encrypted_page_writeback(sbi
, dn
.data_blkaddr
);
95 /* if gced page is attached, don't write to cold segment */
96 clear_cold_data(page
);
98 sb_end_pagefault(inode
->i_sb
);
99 f2fs_update_time(sbi
, REQ_TIME
);
100 return block_page_mkwrite_return(err
);
103 static const struct vm_operations_struct f2fs_file_vm_ops
= {
104 .fault
= filemap_fault
,
105 .map_pages
= filemap_map_pages
,
106 .page_mkwrite
= f2fs_vm_page_mkwrite
,
109 static int get_parent_ino(struct inode
*inode
, nid_t
*pino
)
111 struct dentry
*dentry
;
113 inode
= igrab(inode
);
114 dentry
= d_find_any_alias(inode
);
119 if (update_dent_inode(inode
, inode
, &dentry
->d_name
)) {
124 *pino
= parent_ino(dentry
);
129 static inline bool need_do_checkpoint(struct inode
*inode
)
131 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
132 bool need_cp
= false;
134 if (!S_ISREG(inode
->i_mode
) || inode
->i_nlink
!= 1)
136 else if (file_enc_name(inode
) && need_dentry_mark(sbi
, inode
->i_ino
))
138 else if (file_wrong_pino(inode
))
140 else if (!space_for_roll_forward(sbi
))
142 else if (!is_checkpointed_node(sbi
, F2FS_I(inode
)->i_pino
))
144 else if (F2FS_I(inode
)->xattr_ver
== cur_cp_version(F2FS_CKPT(sbi
)))
146 else if (test_opt(sbi
, FASTBOOT
))
148 else if (sbi
->active_logs
== 2)
154 static bool need_inode_page_update(struct f2fs_sb_info
*sbi
, nid_t ino
)
156 struct page
*i
= find_get_page(NODE_MAPPING(sbi
), ino
);
158 /* But we need to avoid that there are some inode updates */
159 if ((i
&& PageDirty(i
)) || need_inode_block_update(sbi
, ino
))
165 static void try_to_fix_pino(struct inode
*inode
)
167 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
170 down_write(&fi
->i_sem
);
172 if (file_wrong_pino(inode
) && inode
->i_nlink
== 1 &&
173 get_parent_ino(inode
, &pino
)) {
175 file_got_pino(inode
);
176 up_write(&fi
->i_sem
);
178 mark_inode_dirty_sync(inode
);
179 f2fs_write_inode(inode
, NULL
);
181 up_write(&fi
->i_sem
);
185 int f2fs_sync_file(struct file
*file
, loff_t start
, loff_t end
, int datasync
)
187 struct inode
*inode
= file
->f_mapping
->host
;
188 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
189 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
190 nid_t ino
= inode
->i_ino
;
192 bool need_cp
= false;
193 struct writeback_control wbc
= {
194 .sync_mode
= WB_SYNC_ALL
,
195 .nr_to_write
= LONG_MAX
,
199 if (unlikely(f2fs_readonly(inode
->i_sb
)))
202 trace_f2fs_sync_file_enter(inode
);
204 /* if fdatasync is triggered, let's do in-place-update */
205 if (datasync
|| get_dirty_pages(inode
) <= SM_I(sbi
)->min_fsync_blocks
)
206 set_inode_flag(fi
, FI_NEED_IPU
);
207 ret
= filemap_write_and_wait_range(inode
->i_mapping
, start
, end
);
208 clear_inode_flag(fi
, FI_NEED_IPU
);
211 trace_f2fs_sync_file_exit(inode
, need_cp
, datasync
, ret
);
215 /* if the inode is dirty, let's recover all the time */
217 f2fs_write_inode(inode
, NULL
);
222 * if there is no written data, don't waste time to write recovery info.
224 if (!is_inode_flag_set(fi
, FI_APPEND_WRITE
) &&
225 !exist_written_data(sbi
, ino
, APPEND_INO
)) {
227 /* it may call write_inode just prior to fsync */
228 if (need_inode_page_update(sbi
, ino
))
231 if (is_inode_flag_set(fi
, FI_UPDATE_WRITE
) ||
232 exist_written_data(sbi
, ino
, UPDATE_INO
))
238 * Both of fdatasync() and fsync() are able to be recovered from
241 down_read(&fi
->i_sem
);
242 need_cp
= need_do_checkpoint(inode
);
246 /* all the dirty node pages should be flushed for POR */
247 ret
= f2fs_sync_fs(inode
->i_sb
, 1);
250 * We've secured consistency through sync_fs. Following pino
251 * will be used only for fsynced inodes after checkpoint.
253 try_to_fix_pino(inode
);
254 clear_inode_flag(fi
, FI_APPEND_WRITE
);
255 clear_inode_flag(fi
, FI_UPDATE_WRITE
);
259 sync_node_pages(sbi
, ino
, &wbc
);
261 /* if cp_error was enabled, we should avoid infinite loop */
262 if (unlikely(f2fs_cp_error(sbi
))) {
267 if (need_inode_block_update(sbi
, ino
)) {
268 mark_inode_dirty_sync(inode
);
269 f2fs_write_inode(inode
, NULL
);
273 ret
= wait_on_node_pages_writeback(sbi
, ino
);
277 /* once recovery info is written, don't need to tack this */
278 remove_ino_entry(sbi
, ino
, APPEND_INO
);
279 clear_inode_flag(fi
, FI_APPEND_WRITE
);
281 remove_ino_entry(sbi
, ino
, UPDATE_INO
);
282 clear_inode_flag(fi
, FI_UPDATE_WRITE
);
283 ret
= f2fs_issue_flush(sbi
);
284 f2fs_update_time(sbi
, REQ_TIME
);
286 trace_f2fs_sync_file_exit(inode
, need_cp
, datasync
, ret
);
287 f2fs_trace_ios(NULL
, 1);
291 static pgoff_t
__get_first_dirty_index(struct address_space
*mapping
,
292 pgoff_t pgofs
, int whence
)
297 if (whence
!= SEEK_DATA
)
300 /* find first dirty page index */
301 pagevec_init(&pvec
, 0);
302 nr_pages
= pagevec_lookup_tag(&pvec
, mapping
, &pgofs
,
303 PAGECACHE_TAG_DIRTY
, 1);
304 pgofs
= nr_pages
? pvec
.pages
[0]->index
: LONG_MAX
;
305 pagevec_release(&pvec
);
309 static bool __found_offset(block_t blkaddr
, pgoff_t dirty
, pgoff_t pgofs
,
314 if ((blkaddr
== NEW_ADDR
&& dirty
== pgofs
) ||
315 (blkaddr
!= NEW_ADDR
&& blkaddr
!= NULL_ADDR
))
319 if (blkaddr
== NULL_ADDR
)
326 static loff_t
f2fs_seek_block(struct file
*file
, loff_t offset
, int whence
)
328 struct inode
*inode
= file
->f_mapping
->host
;
329 loff_t maxbytes
= inode
->i_sb
->s_maxbytes
;
330 struct dnode_of_data dn
;
331 pgoff_t pgofs
, end_offset
, dirty
;
332 loff_t data_ofs
= offset
;
338 isize
= i_size_read(inode
);
342 /* handle inline data case */
343 if (f2fs_has_inline_data(inode
) || f2fs_has_inline_dentry(inode
)) {
344 if (whence
== SEEK_HOLE
)
349 pgofs
= (pgoff_t
)(offset
>> PAGE_CACHE_SHIFT
);
351 dirty
= __get_first_dirty_index(inode
->i_mapping
, pgofs
, whence
);
353 for (; data_ofs
< isize
; data_ofs
= (loff_t
)pgofs
<< PAGE_CACHE_SHIFT
) {
354 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
355 err
= get_dnode_of_data(&dn
, pgofs
, LOOKUP_NODE_RA
);
356 if (err
&& err
!= -ENOENT
) {
358 } else if (err
== -ENOENT
) {
359 /* direct node does not exists */
360 if (whence
== SEEK_DATA
) {
361 pgofs
= PGOFS_OF_NEXT_DNODE(pgofs
,
369 end_offset
= ADDRS_PER_PAGE(dn
.node_page
, F2FS_I(inode
));
371 /* find data/hole in dnode block */
372 for (; dn
.ofs_in_node
< end_offset
;
373 dn
.ofs_in_node
++, pgofs
++,
374 data_ofs
= (loff_t
)pgofs
<< PAGE_CACHE_SHIFT
) {
376 blkaddr
= datablock_addr(dn
.node_page
, dn
.ofs_in_node
);
378 if (__found_offset(blkaddr
, dirty
, pgofs
, whence
)) {
386 if (whence
== SEEK_DATA
)
389 if (whence
== SEEK_HOLE
&& data_ofs
> isize
)
392 return vfs_setpos(file
, data_ofs
, maxbytes
);
398 static loff_t
f2fs_llseek(struct file
*file
, loff_t offset
, int whence
)
400 struct inode
*inode
= file
->f_mapping
->host
;
401 loff_t maxbytes
= inode
->i_sb
->s_maxbytes
;
407 return generic_file_llseek_size(file
, offset
, whence
,
408 maxbytes
, i_size_read(inode
));
413 return f2fs_seek_block(file
, offset
, whence
);
419 static int f2fs_file_mmap(struct file
*file
, struct vm_area_struct
*vma
)
421 struct inode
*inode
= file_inode(file
);
424 if (f2fs_encrypted_inode(inode
)) {
425 err
= f2fs_get_encryption_info(inode
);
430 /* we don't need to use inline_data strictly */
431 err
= f2fs_convert_inline_inode(inode
);
436 vma
->vm_ops
= &f2fs_file_vm_ops
;
440 static int f2fs_file_open(struct inode
*inode
, struct file
*filp
)
442 int ret
= generic_file_open(inode
, filp
);
444 if (!ret
&& f2fs_encrypted_inode(inode
)) {
445 ret
= f2fs_get_encryption_info(inode
);
452 int truncate_data_blocks_range(struct dnode_of_data
*dn
, int count
)
454 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dn
->inode
);
455 struct f2fs_node
*raw_node
;
456 int nr_free
= 0, ofs
= dn
->ofs_in_node
, len
= count
;
459 raw_node
= F2FS_NODE(dn
->node_page
);
460 addr
= blkaddr_in_node(raw_node
) + ofs
;
462 for (; count
> 0; count
--, addr
++, dn
->ofs_in_node
++) {
463 block_t blkaddr
= le32_to_cpu(*addr
);
464 if (blkaddr
== NULL_ADDR
)
467 dn
->data_blkaddr
= NULL_ADDR
;
468 set_data_blkaddr(dn
);
469 invalidate_blocks(sbi
, blkaddr
);
470 if (dn
->ofs_in_node
== 0 && IS_INODE(dn
->node_page
))
471 clear_inode_flag(F2FS_I(dn
->inode
),
472 FI_FIRST_BLOCK_WRITTEN
);
479 * once we invalidate valid blkaddr in range [ofs, ofs + count],
480 * we will invalidate all blkaddr in the whole range.
482 fofs
= start_bidx_of_node(ofs_of_node(dn
->node_page
),
483 F2FS_I(dn
->inode
)) + ofs
;
484 f2fs_update_extent_cache_range(dn
, fofs
, 0, len
);
485 dec_valid_block_count(sbi
, dn
->inode
, nr_free
);
488 dn
->ofs_in_node
= ofs
;
490 f2fs_update_time(sbi
, REQ_TIME
);
491 trace_f2fs_truncate_data_blocks_range(dn
->inode
, dn
->nid
,
492 dn
->ofs_in_node
, nr_free
);
496 void truncate_data_blocks(struct dnode_of_data
*dn
)
498 truncate_data_blocks_range(dn
, ADDRS_PER_BLOCK
);
501 static int truncate_partial_data_page(struct inode
*inode
, u64 from
,
504 unsigned offset
= from
& (PAGE_CACHE_SIZE
- 1);
505 pgoff_t index
= from
>> PAGE_CACHE_SHIFT
;
506 struct address_space
*mapping
= inode
->i_mapping
;
509 if (!offset
&& !cache_only
)
513 page
= f2fs_grab_cache_page(mapping
, index
, false);
514 if (page
&& PageUptodate(page
))
516 f2fs_put_page(page
, 1);
520 page
= get_lock_data_page(inode
, index
, true);
524 f2fs_wait_on_page_writeback(page
, DATA
);
525 zero_user(page
, offset
, PAGE_CACHE_SIZE
- offset
);
526 if (!cache_only
|| !f2fs_encrypted_inode(inode
) || !S_ISREG(inode
->i_mode
))
527 set_page_dirty(page
);
528 f2fs_put_page(page
, 1);
532 int truncate_blocks(struct inode
*inode
, u64 from
, bool lock
)
534 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
535 unsigned int blocksize
= inode
->i_sb
->s_blocksize
;
536 struct dnode_of_data dn
;
538 int count
= 0, err
= 0;
540 bool truncate_page
= false;
542 trace_f2fs_truncate_blocks_enter(inode
, from
);
544 free_from
= (pgoff_t
)F2FS_BYTES_TO_BLK(from
+ blocksize
- 1);
549 ipage
= get_node_page(sbi
, inode
->i_ino
);
551 err
= PTR_ERR(ipage
);
555 if (f2fs_has_inline_data(inode
)) {
556 if (truncate_inline_inode(ipage
, from
))
557 set_page_dirty(ipage
);
558 f2fs_put_page(ipage
, 1);
559 truncate_page
= true;
563 set_new_dnode(&dn
, inode
, ipage
, NULL
, 0);
564 err
= get_dnode_of_data(&dn
, free_from
, LOOKUP_NODE
);
571 count
= ADDRS_PER_PAGE(dn
.node_page
, F2FS_I(inode
));
573 count
-= dn
.ofs_in_node
;
574 f2fs_bug_on(sbi
, count
< 0);
576 if (dn
.ofs_in_node
|| IS_INODE(dn
.node_page
)) {
577 truncate_data_blocks_range(&dn
, count
);
583 err
= truncate_inode_blocks(inode
, free_from
);
588 /* lastly zero out the first data page */
590 err
= truncate_partial_data_page(inode
, from
, truncate_page
);
592 trace_f2fs_truncate_blocks_exit(inode
, err
);
596 int f2fs_truncate(struct inode
*inode
, bool lock
)
600 if (!(S_ISREG(inode
->i_mode
) || S_ISDIR(inode
->i_mode
) ||
601 S_ISLNK(inode
->i_mode
)))
604 trace_f2fs_truncate(inode
);
606 /* we should check inline_data size */
607 if (!f2fs_may_inline_data(inode
)) {
608 err
= f2fs_convert_inline_inode(inode
);
613 err
= truncate_blocks(inode
, i_size_read(inode
), lock
);
617 inode
->i_mtime
= inode
->i_ctime
= CURRENT_TIME
;
618 mark_inode_dirty(inode
);
622 int f2fs_getattr(struct vfsmount
*mnt
,
623 struct dentry
*dentry
, struct kstat
*stat
)
625 struct inode
*inode
= d_inode(dentry
);
626 generic_fillattr(inode
, stat
);
631 #ifdef CONFIG_F2FS_FS_POSIX_ACL
632 static void __setattr_copy(struct inode
*inode
, const struct iattr
*attr
)
634 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
635 unsigned int ia_valid
= attr
->ia_valid
;
637 if (ia_valid
& ATTR_UID
)
638 inode
->i_uid
= attr
->ia_uid
;
639 if (ia_valid
& ATTR_GID
)
640 inode
->i_gid
= attr
->ia_gid
;
641 if (ia_valid
& ATTR_ATIME
)
642 inode
->i_atime
= timespec_trunc(attr
->ia_atime
,
643 inode
->i_sb
->s_time_gran
);
644 if (ia_valid
& ATTR_MTIME
)
645 inode
->i_mtime
= timespec_trunc(attr
->ia_mtime
,
646 inode
->i_sb
->s_time_gran
);
647 if (ia_valid
& ATTR_CTIME
)
648 inode
->i_ctime
= timespec_trunc(attr
->ia_ctime
,
649 inode
->i_sb
->s_time_gran
);
650 if (ia_valid
& ATTR_MODE
) {
651 umode_t mode
= attr
->ia_mode
;
653 if (!in_group_p(inode
->i_gid
) && !capable(CAP_FSETID
))
655 set_acl_inode(fi
, mode
);
659 #define __setattr_copy setattr_copy
662 int f2fs_setattr(struct dentry
*dentry
, struct iattr
*attr
)
664 struct inode
*inode
= d_inode(dentry
);
665 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
668 err
= inode_change_ok(inode
, attr
);
672 if (attr
->ia_valid
& ATTR_SIZE
) {
673 if (f2fs_encrypted_inode(inode
) &&
674 f2fs_get_encryption_info(inode
))
677 if (attr
->ia_size
<= i_size_read(inode
)) {
678 truncate_setsize(inode
, attr
->ia_size
);
679 err
= f2fs_truncate(inode
, true);
682 f2fs_balance_fs(F2FS_I_SB(inode
), true);
685 * do not trim all blocks after i_size if target size is
686 * larger than i_size.
688 truncate_setsize(inode
, attr
->ia_size
);
690 /* should convert inline inode here */
691 if (!f2fs_may_inline_data(inode
)) {
692 err
= f2fs_convert_inline_inode(inode
);
696 inode
->i_mtime
= inode
->i_ctime
= CURRENT_TIME
;
700 __setattr_copy(inode
, attr
);
702 if (attr
->ia_valid
& ATTR_MODE
) {
703 err
= posix_acl_chmod(inode
, get_inode_mode(inode
));
704 if (err
|| is_inode_flag_set(fi
, FI_ACL_MODE
)) {
705 inode
->i_mode
= fi
->i_acl_mode
;
706 clear_inode_flag(fi
, FI_ACL_MODE
);
710 mark_inode_dirty(inode
);
714 const struct inode_operations f2fs_file_inode_operations
= {
715 .getattr
= f2fs_getattr
,
716 .setattr
= f2fs_setattr
,
717 .get_acl
= f2fs_get_acl
,
718 .set_acl
= f2fs_set_acl
,
719 #ifdef CONFIG_F2FS_FS_XATTR
720 .setxattr
= generic_setxattr
,
721 .getxattr
= generic_getxattr
,
722 .listxattr
= f2fs_listxattr
,
723 .removexattr
= generic_removexattr
,
725 .fiemap
= f2fs_fiemap
,
728 static int fill_zero(struct inode
*inode
, pgoff_t index
,
729 loff_t start
, loff_t len
)
731 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
737 f2fs_balance_fs(sbi
, true);
740 page
= get_new_data_page(inode
, NULL
, index
, false);
744 return PTR_ERR(page
);
746 f2fs_wait_on_page_writeback(page
, DATA
);
747 zero_user(page
, start
, len
);
748 set_page_dirty(page
);
749 f2fs_put_page(page
, 1);
753 int truncate_hole(struct inode
*inode
, pgoff_t pg_start
, pgoff_t pg_end
)
757 while (pg_start
< pg_end
) {
758 struct dnode_of_data dn
;
759 pgoff_t end_offset
, count
;
761 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
762 err
= get_dnode_of_data(&dn
, pg_start
, LOOKUP_NODE
);
764 if (err
== -ENOENT
) {
771 end_offset
= ADDRS_PER_PAGE(dn
.node_page
, F2FS_I(inode
));
772 count
= min(end_offset
- dn
.ofs_in_node
, pg_end
- pg_start
);
774 f2fs_bug_on(F2FS_I_SB(inode
), count
== 0 || count
> end_offset
);
776 truncate_data_blocks_range(&dn
, count
);
784 static int punch_hole(struct inode
*inode
, loff_t offset
, loff_t len
)
786 pgoff_t pg_start
, pg_end
;
787 loff_t off_start
, off_end
;
790 ret
= f2fs_convert_inline_inode(inode
);
794 pg_start
= ((unsigned long long) offset
) >> PAGE_CACHE_SHIFT
;
795 pg_end
= ((unsigned long long) offset
+ len
) >> PAGE_CACHE_SHIFT
;
797 off_start
= offset
& (PAGE_CACHE_SIZE
- 1);
798 off_end
= (offset
+ len
) & (PAGE_CACHE_SIZE
- 1);
800 if (pg_start
== pg_end
) {
801 ret
= fill_zero(inode
, pg_start
, off_start
,
802 off_end
- off_start
);
807 ret
= fill_zero(inode
, pg_start
++, off_start
,
808 PAGE_CACHE_SIZE
- off_start
);
813 ret
= fill_zero(inode
, pg_end
, 0, off_end
);
818 if (pg_start
< pg_end
) {
819 struct address_space
*mapping
= inode
->i_mapping
;
820 loff_t blk_start
, blk_end
;
821 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
823 f2fs_balance_fs(sbi
, true);
825 blk_start
= (loff_t
)pg_start
<< PAGE_CACHE_SHIFT
;
826 blk_end
= (loff_t
)pg_end
<< PAGE_CACHE_SHIFT
;
827 truncate_inode_pages_range(mapping
, blk_start
,
831 ret
= truncate_hole(inode
, pg_start
, pg_end
);
839 static int __exchange_data_block(struct inode
*inode
, pgoff_t src
,
840 pgoff_t dst
, bool full
)
842 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
843 struct dnode_of_data dn
;
845 bool do_replace
= false;
848 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
849 ret
= get_dnode_of_data(&dn
, src
, LOOKUP_NODE_RA
);
850 if (ret
&& ret
!= -ENOENT
) {
852 } else if (ret
== -ENOENT
) {
853 new_addr
= NULL_ADDR
;
855 new_addr
= dn
.data_blkaddr
;
856 if (!is_checkpointed_data(sbi
, new_addr
)) {
857 dn
.data_blkaddr
= NULL_ADDR
;
858 /* do not invalidate this block address */
859 set_data_blkaddr(&dn
);
860 f2fs_update_extent_cache(&dn
);
866 if (new_addr
== NULL_ADDR
)
867 return full
? truncate_hole(inode
, dst
, dst
+ 1) : 0;
870 struct page
*ipage
= get_node_page(sbi
, inode
->i_ino
);
874 ret
= PTR_ERR(ipage
);
878 set_new_dnode(&dn
, inode
, ipage
, NULL
, 0);
879 ret
= f2fs_reserve_block(&dn
, dst
);
883 truncate_data_blocks_range(&dn
, 1);
885 get_node_info(sbi
, dn
.nid
, &ni
);
886 f2fs_replace_block(sbi
, &dn
, dn
.data_blkaddr
, new_addr
,
890 struct page
*psrc
, *pdst
;
892 psrc
= get_lock_data_page(inode
, src
, true);
894 return PTR_ERR(psrc
);
895 pdst
= get_new_data_page(inode
, NULL
, dst
, false);
897 f2fs_put_page(psrc
, 1);
898 return PTR_ERR(pdst
);
900 f2fs_copy_page(psrc
, pdst
);
901 set_page_dirty(pdst
);
902 f2fs_put_page(pdst
, 1);
903 f2fs_put_page(psrc
, 1);
905 return truncate_hole(inode
, src
, src
+ 1);
910 if (!get_dnode_of_data(&dn
, src
, LOOKUP_NODE
)) {
911 dn
.data_blkaddr
= new_addr
;
912 set_data_blkaddr(&dn
);
913 f2fs_update_extent_cache(&dn
);
919 static int f2fs_do_collapse(struct inode
*inode
, pgoff_t start
, pgoff_t end
)
921 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
922 pgoff_t nrpages
= (i_size_read(inode
) + PAGE_SIZE
- 1) / PAGE_SIZE
;
925 for (; end
< nrpages
; start
++, end
++) {
926 f2fs_balance_fs(sbi
, true);
928 ret
= __exchange_data_block(inode
, end
, start
, true);
936 static int f2fs_collapse_range(struct inode
*inode
, loff_t offset
, loff_t len
)
938 pgoff_t pg_start
, pg_end
;
942 if (offset
+ len
>= i_size_read(inode
))
945 /* collapse range should be aligned to block size of f2fs. */
946 if (offset
& (F2FS_BLKSIZE
- 1) || len
& (F2FS_BLKSIZE
- 1))
949 ret
= f2fs_convert_inline_inode(inode
);
953 pg_start
= offset
>> PAGE_CACHE_SHIFT
;
954 pg_end
= (offset
+ len
) >> PAGE_CACHE_SHIFT
;
956 /* write out all dirty pages from offset */
957 ret
= filemap_write_and_wait_range(inode
->i_mapping
, offset
, LLONG_MAX
);
961 truncate_pagecache(inode
, offset
);
963 ret
= f2fs_do_collapse(inode
, pg_start
, pg_end
);
967 /* write out all moved pages, if possible */
968 filemap_write_and_wait_range(inode
->i_mapping
, offset
, LLONG_MAX
);
969 truncate_pagecache(inode
, offset
);
971 new_size
= i_size_read(inode
) - len
;
972 truncate_pagecache(inode
, new_size
);
974 ret
= truncate_blocks(inode
, new_size
, true);
976 i_size_write(inode
, new_size
);
981 static int f2fs_zero_range(struct inode
*inode
, loff_t offset
, loff_t len
,
984 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
985 struct address_space
*mapping
= inode
->i_mapping
;
986 pgoff_t index
, pg_start
, pg_end
;
987 loff_t new_size
= i_size_read(inode
);
988 loff_t off_start
, off_end
;
991 ret
= inode_newsize_ok(inode
, (len
+ offset
));
995 ret
= f2fs_convert_inline_inode(inode
);
999 ret
= filemap_write_and_wait_range(mapping
, offset
, offset
+ len
- 1);
1003 truncate_pagecache_range(inode
, offset
, offset
+ len
- 1);
1005 pg_start
= ((unsigned long long) offset
) >> PAGE_CACHE_SHIFT
;
1006 pg_end
= ((unsigned long long) offset
+ len
) >> PAGE_CACHE_SHIFT
;
1008 off_start
= offset
& (PAGE_CACHE_SIZE
- 1);
1009 off_end
= (offset
+ len
) & (PAGE_CACHE_SIZE
- 1);
1011 if (pg_start
== pg_end
) {
1012 ret
= fill_zero(inode
, pg_start
, off_start
,
1013 off_end
- off_start
);
1017 if (offset
+ len
> new_size
)
1018 new_size
= offset
+ len
;
1019 new_size
= max_t(loff_t
, new_size
, offset
+ len
);
1022 ret
= fill_zero(inode
, pg_start
++, off_start
,
1023 PAGE_CACHE_SIZE
- off_start
);
1027 new_size
= max_t(loff_t
, new_size
,
1028 (loff_t
)pg_start
<< PAGE_CACHE_SHIFT
);
1031 for (index
= pg_start
; index
< pg_end
; index
++) {
1032 struct dnode_of_data dn
;
1037 ipage
= get_node_page(sbi
, inode
->i_ino
);
1038 if (IS_ERR(ipage
)) {
1039 ret
= PTR_ERR(ipage
);
1040 f2fs_unlock_op(sbi
);
1044 set_new_dnode(&dn
, inode
, ipage
, NULL
, 0);
1045 ret
= f2fs_reserve_block(&dn
, index
);
1047 f2fs_unlock_op(sbi
);
1051 if (dn
.data_blkaddr
!= NEW_ADDR
) {
1052 invalidate_blocks(sbi
, dn
.data_blkaddr
);
1054 dn
.data_blkaddr
= NEW_ADDR
;
1055 set_data_blkaddr(&dn
);
1057 dn
.data_blkaddr
= NULL_ADDR
;
1058 f2fs_update_extent_cache(&dn
);
1060 f2fs_put_dnode(&dn
);
1061 f2fs_unlock_op(sbi
);
1063 new_size
= max_t(loff_t
, new_size
,
1064 (loff_t
)(index
+ 1) << PAGE_CACHE_SHIFT
);
1068 ret
= fill_zero(inode
, pg_end
, 0, off_end
);
1072 new_size
= max_t(loff_t
, new_size
, offset
+ len
);
1077 if (!(mode
& FALLOC_FL_KEEP_SIZE
) && i_size_read(inode
) < new_size
) {
1078 i_size_write(inode
, new_size
);
1079 mark_inode_dirty(inode
);
1080 update_inode_page(inode
);
1086 static int f2fs_insert_range(struct inode
*inode
, loff_t offset
, loff_t len
)
1088 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1089 pgoff_t pg_start
, pg_end
, delta
, nrpages
, idx
;
1093 new_size
= i_size_read(inode
) + len
;
1094 if (new_size
> inode
->i_sb
->s_maxbytes
)
1097 if (offset
>= i_size_read(inode
))
1100 /* insert range should be aligned to block size of f2fs. */
1101 if (offset
& (F2FS_BLKSIZE
- 1) || len
& (F2FS_BLKSIZE
- 1))
1104 ret
= f2fs_convert_inline_inode(inode
);
1108 f2fs_balance_fs(sbi
, true);
1110 ret
= truncate_blocks(inode
, i_size_read(inode
), true);
1114 /* write out all dirty pages from offset */
1115 ret
= filemap_write_and_wait_range(inode
->i_mapping
, offset
, LLONG_MAX
);
1119 truncate_pagecache(inode
, offset
);
1121 pg_start
= offset
>> PAGE_CACHE_SHIFT
;
1122 pg_end
= (offset
+ len
) >> PAGE_CACHE_SHIFT
;
1123 delta
= pg_end
- pg_start
;
1124 nrpages
= (i_size_read(inode
) + PAGE_SIZE
- 1) / PAGE_SIZE
;
1126 for (idx
= nrpages
- 1; idx
>= pg_start
&& idx
!= -1; idx
--) {
1128 ret
= __exchange_data_block(inode
, idx
, idx
+ delta
, false);
1129 f2fs_unlock_op(sbi
);
1134 /* write out all moved pages, if possible */
1135 filemap_write_and_wait_range(inode
->i_mapping
, offset
, LLONG_MAX
);
1136 truncate_pagecache(inode
, offset
);
1139 i_size_write(inode
, new_size
);
1143 static int expand_inode_data(struct inode
*inode
, loff_t offset
,
1144 loff_t len
, int mode
)
1146 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1147 pgoff_t index
, pg_start
, pg_end
;
1148 loff_t new_size
= i_size_read(inode
);
1149 loff_t off_start
, off_end
;
1152 ret
= inode_newsize_ok(inode
, (len
+ offset
));
1156 ret
= f2fs_convert_inline_inode(inode
);
1160 f2fs_balance_fs(sbi
, true);
1162 pg_start
= ((unsigned long long) offset
) >> PAGE_CACHE_SHIFT
;
1163 pg_end
= ((unsigned long long) offset
+ len
) >> PAGE_CACHE_SHIFT
;
1165 off_start
= offset
& (PAGE_CACHE_SIZE
- 1);
1166 off_end
= (offset
+ len
) & (PAGE_CACHE_SIZE
- 1);
1170 for (index
= pg_start
; index
<= pg_end
; index
++) {
1171 struct dnode_of_data dn
;
1173 if (index
== pg_end
&& !off_end
)
1176 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
1177 ret
= f2fs_reserve_block(&dn
, index
);
1181 if (pg_start
== pg_end
)
1182 new_size
= offset
+ len
;
1183 else if (index
== pg_start
&& off_start
)
1184 new_size
= (loff_t
)(index
+ 1) << PAGE_CACHE_SHIFT
;
1185 else if (index
== pg_end
)
1186 new_size
= ((loff_t
)index
<< PAGE_CACHE_SHIFT
) +
1189 new_size
+= PAGE_CACHE_SIZE
;
1192 if (!(mode
& FALLOC_FL_KEEP_SIZE
) &&
1193 i_size_read(inode
) < new_size
) {
1194 i_size_write(inode
, new_size
);
1195 mark_inode_dirty(inode
);
1196 update_inode_page(inode
);
1198 f2fs_unlock_op(sbi
);
1203 static long f2fs_fallocate(struct file
*file
, int mode
,
1204 loff_t offset
, loff_t len
)
1206 struct inode
*inode
= file_inode(file
);
1209 /* f2fs only support ->fallocate for regular file */
1210 if (!S_ISREG(inode
->i_mode
))
1213 if (f2fs_encrypted_inode(inode
) &&
1214 (mode
& (FALLOC_FL_COLLAPSE_RANGE
| FALLOC_FL_INSERT_RANGE
)))
1217 if (mode
& ~(FALLOC_FL_KEEP_SIZE
| FALLOC_FL_PUNCH_HOLE
|
1218 FALLOC_FL_COLLAPSE_RANGE
| FALLOC_FL_ZERO_RANGE
|
1219 FALLOC_FL_INSERT_RANGE
))
1224 if (mode
& FALLOC_FL_PUNCH_HOLE
) {
1225 if (offset
>= inode
->i_size
)
1228 ret
= punch_hole(inode
, offset
, len
);
1229 } else if (mode
& FALLOC_FL_COLLAPSE_RANGE
) {
1230 ret
= f2fs_collapse_range(inode
, offset
, len
);
1231 } else if (mode
& FALLOC_FL_ZERO_RANGE
) {
1232 ret
= f2fs_zero_range(inode
, offset
, len
, mode
);
1233 } else if (mode
& FALLOC_FL_INSERT_RANGE
) {
1234 ret
= f2fs_insert_range(inode
, offset
, len
);
1236 ret
= expand_inode_data(inode
, offset
, len
, mode
);
1240 inode
->i_mtime
= inode
->i_ctime
= CURRENT_TIME
;
1241 mark_inode_dirty(inode
);
1242 f2fs_update_time(F2FS_I_SB(inode
), REQ_TIME
);
1246 inode_unlock(inode
);
1248 trace_f2fs_fallocate(inode
, mode
, offset
, len
, ret
);
1252 static int f2fs_release_file(struct inode
*inode
, struct file
*filp
)
1254 /* some remained atomic pages should discarded */
1255 if (f2fs_is_atomic_file(inode
))
1256 commit_inmem_pages(inode
, true);
1257 if (f2fs_is_volatile_file(inode
)) {
1258 set_inode_flag(F2FS_I(inode
), FI_DROP_CACHE
);
1259 filemap_fdatawrite(inode
->i_mapping
);
1260 clear_inode_flag(F2FS_I(inode
), FI_DROP_CACHE
);
1265 #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
1266 #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
1268 static inline __u32
f2fs_mask_flags(umode_t mode
, __u32 flags
)
1272 else if (S_ISREG(mode
))
1273 return flags
& F2FS_REG_FLMASK
;
1275 return flags
& F2FS_OTHER_FLMASK
;
1278 static int f2fs_ioc_getflags(struct file
*filp
, unsigned long arg
)
1280 struct inode
*inode
= file_inode(filp
);
1281 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
1282 unsigned int flags
= fi
->i_flags
& FS_FL_USER_VISIBLE
;
1283 return put_user(flags
, (int __user
*)arg
);
1286 static int f2fs_ioc_setflags(struct file
*filp
, unsigned long arg
)
1288 struct inode
*inode
= file_inode(filp
);
1289 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
1290 unsigned int flags
= fi
->i_flags
& FS_FL_USER_VISIBLE
;
1291 unsigned int oldflags
;
1294 ret
= mnt_want_write_file(filp
);
1298 if (!inode_owner_or_capable(inode
)) {
1303 if (get_user(flags
, (int __user
*)arg
)) {
1308 flags
= f2fs_mask_flags(inode
->i_mode
, flags
);
1312 oldflags
= fi
->i_flags
;
1314 if ((flags
^ oldflags
) & (FS_APPEND_FL
| FS_IMMUTABLE_FL
)) {
1315 if (!capable(CAP_LINUX_IMMUTABLE
)) {
1316 inode_unlock(inode
);
1322 flags
= flags
& FS_FL_USER_MODIFIABLE
;
1323 flags
|= oldflags
& ~FS_FL_USER_MODIFIABLE
;
1324 fi
->i_flags
= flags
;
1325 inode_unlock(inode
);
1327 f2fs_set_inode_flags(inode
);
1328 inode
->i_ctime
= CURRENT_TIME
;
1329 mark_inode_dirty(inode
);
1331 mnt_drop_write_file(filp
);
1335 static int f2fs_ioc_getversion(struct file
*filp
, unsigned long arg
)
1337 struct inode
*inode
= file_inode(filp
);
1339 return put_user(inode
->i_generation
, (int __user
*)arg
);
1342 static int f2fs_ioc_start_atomic_write(struct file
*filp
)
1344 struct inode
*inode
= file_inode(filp
);
1347 if (!inode_owner_or_capable(inode
))
1350 if (f2fs_is_atomic_file(inode
))
1353 ret
= f2fs_convert_inline_inode(inode
);
1357 set_inode_flag(F2FS_I(inode
), FI_ATOMIC_FILE
);
1358 f2fs_update_time(F2FS_I_SB(inode
), REQ_TIME
);
1363 static int f2fs_ioc_commit_atomic_write(struct file
*filp
)
1365 struct inode
*inode
= file_inode(filp
);
1368 if (!inode_owner_or_capable(inode
))
1371 if (f2fs_is_volatile_file(inode
))
1374 ret
= mnt_want_write_file(filp
);
1378 if (f2fs_is_atomic_file(inode
)) {
1379 clear_inode_flag(F2FS_I(inode
), FI_ATOMIC_FILE
);
1380 ret
= commit_inmem_pages(inode
, false);
1382 set_inode_flag(F2FS_I(inode
), FI_ATOMIC_FILE
);
1387 ret
= f2fs_sync_file(filp
, 0, LLONG_MAX
, 0);
1389 mnt_drop_write_file(filp
);
1393 static int f2fs_ioc_start_volatile_write(struct file
*filp
)
1395 struct inode
*inode
= file_inode(filp
);
1398 if (!inode_owner_or_capable(inode
))
1401 if (f2fs_is_volatile_file(inode
))
1404 ret
= f2fs_convert_inline_inode(inode
);
1408 set_inode_flag(F2FS_I(inode
), FI_VOLATILE_FILE
);
1409 f2fs_update_time(F2FS_I_SB(inode
), REQ_TIME
);
1413 static int f2fs_ioc_release_volatile_write(struct file
*filp
)
1415 struct inode
*inode
= file_inode(filp
);
1417 if (!inode_owner_or_capable(inode
))
1420 if (!f2fs_is_volatile_file(inode
))
1423 if (!f2fs_is_first_block_written(inode
))
1424 return truncate_partial_data_page(inode
, 0, true);
1426 return punch_hole(inode
, 0, F2FS_BLKSIZE
);
1429 static int f2fs_ioc_abort_volatile_write(struct file
*filp
)
1431 struct inode
*inode
= file_inode(filp
);
1434 if (!inode_owner_or_capable(inode
))
1437 ret
= mnt_want_write_file(filp
);
1441 if (f2fs_is_atomic_file(inode
)) {
1442 clear_inode_flag(F2FS_I(inode
), FI_ATOMIC_FILE
);
1443 commit_inmem_pages(inode
, true);
1445 if (f2fs_is_volatile_file(inode
)) {
1446 clear_inode_flag(F2FS_I(inode
), FI_VOLATILE_FILE
);
1447 ret
= f2fs_sync_file(filp
, 0, LLONG_MAX
, 0);
1450 mnt_drop_write_file(filp
);
1451 f2fs_update_time(F2FS_I_SB(inode
), REQ_TIME
);
1455 static int f2fs_ioc_shutdown(struct file
*filp
, unsigned long arg
)
1457 struct inode
*inode
= file_inode(filp
);
1458 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1459 struct super_block
*sb
= sbi
->sb
;
1462 if (!capable(CAP_SYS_ADMIN
))
1465 if (get_user(in
, (__u32 __user
*)arg
))
1469 case F2FS_GOING_DOWN_FULLSYNC
:
1470 sb
= freeze_bdev(sb
->s_bdev
);
1471 if (sb
&& !IS_ERR(sb
)) {
1472 f2fs_stop_checkpoint(sbi
);
1473 thaw_bdev(sb
->s_bdev
, sb
);
1476 case F2FS_GOING_DOWN_METASYNC
:
1477 /* do checkpoint only */
1478 f2fs_sync_fs(sb
, 1);
1479 f2fs_stop_checkpoint(sbi
);
1481 case F2FS_GOING_DOWN_NOSYNC
:
1482 f2fs_stop_checkpoint(sbi
);
1484 case F2FS_GOING_DOWN_METAFLUSH
:
1485 sync_meta_pages(sbi
, META
, LONG_MAX
);
1486 f2fs_stop_checkpoint(sbi
);
1491 f2fs_update_time(sbi
, REQ_TIME
);
1495 static int f2fs_ioc_fitrim(struct file
*filp
, unsigned long arg
)
1497 struct inode
*inode
= file_inode(filp
);
1498 struct super_block
*sb
= inode
->i_sb
;
1499 struct request_queue
*q
= bdev_get_queue(sb
->s_bdev
);
1500 struct fstrim_range range
;
1503 if (!capable(CAP_SYS_ADMIN
))
1506 if (!blk_queue_discard(q
))
1509 if (copy_from_user(&range
, (struct fstrim_range __user
*)arg
,
1513 range
.minlen
= max((unsigned int)range
.minlen
,
1514 q
->limits
.discard_granularity
);
1515 ret
= f2fs_trim_fs(F2FS_SB(sb
), &range
);
1519 if (copy_to_user((struct fstrim_range __user
*)arg
, &range
,
1522 f2fs_update_time(F2FS_I_SB(inode
), REQ_TIME
);
1526 static bool uuid_is_nonzero(__u8 u
[16])
1530 for (i
= 0; i
< 16; i
++)
1536 static int f2fs_ioc_set_encryption_policy(struct file
*filp
, unsigned long arg
)
1538 #ifdef CONFIG_F2FS_FS_ENCRYPTION
1539 struct f2fs_encryption_policy policy
;
1540 struct inode
*inode
= file_inode(filp
);
1542 if (copy_from_user(&policy
, (struct f2fs_encryption_policy __user
*)arg
,
1546 f2fs_update_time(F2FS_I_SB(inode
), REQ_TIME
);
1547 return f2fs_process_policy(&policy
, inode
);
1553 static int f2fs_ioc_get_encryption_policy(struct file
*filp
, unsigned long arg
)
1555 #ifdef CONFIG_F2FS_FS_ENCRYPTION
1556 struct f2fs_encryption_policy policy
;
1557 struct inode
*inode
= file_inode(filp
);
1560 err
= f2fs_get_policy(inode
, &policy
);
1564 if (copy_to_user((struct f2fs_encryption_policy __user
*)arg
, &policy
,
1573 static int f2fs_ioc_get_encryption_pwsalt(struct file
*filp
, unsigned long arg
)
1575 struct inode
*inode
= file_inode(filp
);
1576 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1579 if (!f2fs_sb_has_crypto(inode
->i_sb
))
1582 if (uuid_is_nonzero(sbi
->raw_super
->encrypt_pw_salt
))
1585 err
= mnt_want_write_file(filp
);
1589 /* update superblock with uuid */
1590 generate_random_uuid(sbi
->raw_super
->encrypt_pw_salt
);
1592 err
= f2fs_commit_super(sbi
, false);
1595 memset(sbi
->raw_super
->encrypt_pw_salt
, 0, 16);
1596 mnt_drop_write_file(filp
);
1599 mnt_drop_write_file(filp
);
1601 if (copy_to_user((__u8 __user
*)arg
, sbi
->raw_super
->encrypt_pw_salt
,
1607 static int f2fs_ioc_gc(struct file
*filp
, unsigned long arg
)
1609 struct inode
*inode
= file_inode(filp
);
1610 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1613 if (!capable(CAP_SYS_ADMIN
))
1616 if (get_user(sync
, (__u32 __user
*)arg
))
1619 if (f2fs_readonly(sbi
->sb
))
1623 if (!mutex_trylock(&sbi
->gc_mutex
))
1626 mutex_lock(&sbi
->gc_mutex
);
1629 return f2fs_gc(sbi
, sync
);
1632 static int f2fs_ioc_write_checkpoint(struct file
*filp
, unsigned long arg
)
1634 struct inode
*inode
= file_inode(filp
);
1635 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1637 if (!capable(CAP_SYS_ADMIN
))
1640 if (f2fs_readonly(sbi
->sb
))
1643 return f2fs_sync_fs(sbi
->sb
, 1);
1646 static int f2fs_defragment_range(struct f2fs_sb_info
*sbi
,
1648 struct f2fs_defragment
*range
)
1650 struct inode
*inode
= file_inode(filp
);
1651 struct f2fs_map_blocks map
;
1652 struct extent_info ei
;
1653 pgoff_t pg_start
, pg_end
;
1654 unsigned int blk_per_seg
= sbi
->blocks_per_seg
;
1655 unsigned int total
= 0, sec_num
;
1656 unsigned int pages_per_sec
= sbi
->segs_per_sec
* blk_per_seg
;
1657 block_t blk_end
= 0;
1658 bool fragmented
= false;
1661 /* if in-place-update policy is enabled, don't waste time here */
1662 if (need_inplace_update(inode
))
1665 pg_start
= range
->start
>> PAGE_CACHE_SHIFT
;
1666 pg_end
= (range
->start
+ range
->len
) >> PAGE_CACHE_SHIFT
;
1668 f2fs_balance_fs(sbi
, true);
1672 /* writeback all dirty pages in the range */
1673 err
= filemap_write_and_wait_range(inode
->i_mapping
, range
->start
,
1674 range
->start
+ range
->len
- 1);
1679 * lookup mapping info in extent cache, skip defragmenting if physical
1680 * block addresses are continuous.
1682 if (f2fs_lookup_extent_cache(inode
, pg_start
, &ei
)) {
1683 if (ei
.fofs
+ ei
.len
>= pg_end
)
1687 map
.m_lblk
= pg_start
;
1690 * lookup mapping info in dnode page cache, skip defragmenting if all
1691 * physical block addresses are continuous even if there are hole(s)
1692 * in logical blocks.
1694 while (map
.m_lblk
< pg_end
) {
1695 map
.m_len
= pg_end
- map
.m_lblk
;
1696 err
= f2fs_map_blocks(inode
, &map
, 0, F2FS_GET_BLOCK_READ
);
1700 if (!(map
.m_flags
& F2FS_MAP_FLAGS
)) {
1705 if (blk_end
&& blk_end
!= map
.m_pblk
) {
1709 blk_end
= map
.m_pblk
+ map
.m_len
;
1711 map
.m_lblk
+= map
.m_len
;
1717 map
.m_lblk
= pg_start
;
1718 map
.m_len
= pg_end
- pg_start
;
1720 sec_num
= (map
.m_len
+ pages_per_sec
- 1) / pages_per_sec
;
1723 * make sure there are enough free section for LFS allocation, this can
1724 * avoid defragment running in SSR mode when free section are allocated
1727 if (has_not_enough_free_secs(sbi
, sec_num
)) {
1732 while (map
.m_lblk
< pg_end
) {
1737 map
.m_len
= pg_end
- map
.m_lblk
;
1738 err
= f2fs_map_blocks(inode
, &map
, 0, F2FS_GET_BLOCK_READ
);
1742 if (!(map
.m_flags
& F2FS_MAP_FLAGS
)) {
1747 set_inode_flag(F2FS_I(inode
), FI_DO_DEFRAG
);
1750 while (idx
< map
.m_lblk
+ map
.m_len
&& cnt
< blk_per_seg
) {
1753 page
= get_lock_data_page(inode
, idx
, true);
1755 err
= PTR_ERR(page
);
1759 set_page_dirty(page
);
1760 f2fs_put_page(page
, 1);
1769 if (idx
< pg_end
&& cnt
< blk_per_seg
)
1772 clear_inode_flag(F2FS_I(inode
), FI_DO_DEFRAG
);
1774 err
= filemap_fdatawrite(inode
->i_mapping
);
1779 clear_inode_flag(F2FS_I(inode
), FI_DO_DEFRAG
);
1781 inode_unlock(inode
);
1783 range
->len
= (u64
)total
<< PAGE_CACHE_SHIFT
;
1787 static int f2fs_ioc_defragment(struct file
*filp
, unsigned long arg
)
1789 struct inode
*inode
= file_inode(filp
);
1790 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1791 struct f2fs_defragment range
;
1794 if (!capable(CAP_SYS_ADMIN
))
1797 if (!S_ISREG(inode
->i_mode
))
1800 err
= mnt_want_write_file(filp
);
1804 if (f2fs_readonly(sbi
->sb
)) {
1809 if (copy_from_user(&range
, (struct f2fs_defragment __user
*)arg
,
1815 /* verify alignment of offset & size */
1816 if (range
.start
& (F2FS_BLKSIZE
- 1) ||
1817 range
.len
& (F2FS_BLKSIZE
- 1)) {
1822 err
= f2fs_defragment_range(sbi
, filp
, &range
);
1823 f2fs_update_time(sbi
, REQ_TIME
);
1827 if (copy_to_user((struct f2fs_defragment __user
*)arg
, &range
,
1831 mnt_drop_write_file(filp
);
1835 long f2fs_ioctl(struct file
*filp
, unsigned int cmd
, unsigned long arg
)
1838 case F2FS_IOC_GETFLAGS
:
1839 return f2fs_ioc_getflags(filp
, arg
);
1840 case F2FS_IOC_SETFLAGS
:
1841 return f2fs_ioc_setflags(filp
, arg
);
1842 case F2FS_IOC_GETVERSION
:
1843 return f2fs_ioc_getversion(filp
, arg
);
1844 case F2FS_IOC_START_ATOMIC_WRITE
:
1845 return f2fs_ioc_start_atomic_write(filp
);
1846 case F2FS_IOC_COMMIT_ATOMIC_WRITE
:
1847 return f2fs_ioc_commit_atomic_write(filp
);
1848 case F2FS_IOC_START_VOLATILE_WRITE
:
1849 return f2fs_ioc_start_volatile_write(filp
);
1850 case F2FS_IOC_RELEASE_VOLATILE_WRITE
:
1851 return f2fs_ioc_release_volatile_write(filp
);
1852 case F2FS_IOC_ABORT_VOLATILE_WRITE
:
1853 return f2fs_ioc_abort_volatile_write(filp
);
1854 case F2FS_IOC_SHUTDOWN
:
1855 return f2fs_ioc_shutdown(filp
, arg
);
1857 return f2fs_ioc_fitrim(filp
, arg
);
1858 case F2FS_IOC_SET_ENCRYPTION_POLICY
:
1859 return f2fs_ioc_set_encryption_policy(filp
, arg
);
1860 case F2FS_IOC_GET_ENCRYPTION_POLICY
:
1861 return f2fs_ioc_get_encryption_policy(filp
, arg
);
1862 case F2FS_IOC_GET_ENCRYPTION_PWSALT
:
1863 return f2fs_ioc_get_encryption_pwsalt(filp
, arg
);
1864 case F2FS_IOC_GARBAGE_COLLECT
:
1865 return f2fs_ioc_gc(filp
, arg
);
1866 case F2FS_IOC_WRITE_CHECKPOINT
:
1867 return f2fs_ioc_write_checkpoint(filp
, arg
);
1868 case F2FS_IOC_DEFRAGMENT
:
1869 return f2fs_ioc_defragment(filp
, arg
);
1875 static ssize_t
f2fs_file_write_iter(struct kiocb
*iocb
, struct iov_iter
*from
)
1877 struct inode
*inode
= file_inode(iocb
->ki_filp
);
1879 if (f2fs_encrypted_inode(inode
) &&
1880 !f2fs_has_encryption_key(inode
) &&
1881 f2fs_get_encryption_info(inode
))
1884 return generic_file_write_iter(iocb
, from
);
1887 #ifdef CONFIG_COMPAT
1888 long f2fs_compat_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1891 case F2FS_IOC32_GETFLAGS
:
1892 cmd
= F2FS_IOC_GETFLAGS
;
1894 case F2FS_IOC32_SETFLAGS
:
1895 cmd
= F2FS_IOC_SETFLAGS
;
1897 case F2FS_IOC32_GETVERSION
:
1898 cmd
= F2FS_IOC_GETVERSION
;
1900 case F2FS_IOC_START_ATOMIC_WRITE
:
1901 case F2FS_IOC_COMMIT_ATOMIC_WRITE
:
1902 case F2FS_IOC_START_VOLATILE_WRITE
:
1903 case F2FS_IOC_RELEASE_VOLATILE_WRITE
:
1904 case F2FS_IOC_ABORT_VOLATILE_WRITE
:
1905 case F2FS_IOC_SHUTDOWN
:
1906 case F2FS_IOC_SET_ENCRYPTION_POLICY
:
1907 case F2FS_IOC_GET_ENCRYPTION_PWSALT
:
1908 case F2FS_IOC_GET_ENCRYPTION_POLICY
:
1909 case F2FS_IOC_GARBAGE_COLLECT
:
1910 case F2FS_IOC_WRITE_CHECKPOINT
:
1911 case F2FS_IOC_DEFRAGMENT
:
1914 return -ENOIOCTLCMD
;
1916 return f2fs_ioctl(file
, cmd
, (unsigned long) compat_ptr(arg
));
1920 const struct file_operations f2fs_file_operations
= {
1921 .llseek
= f2fs_llseek
,
1922 .read_iter
= generic_file_read_iter
,
1923 .write_iter
= f2fs_file_write_iter
,
1924 .open
= f2fs_file_open
,
1925 .release
= f2fs_release_file
,
1926 .mmap
= f2fs_file_mmap
,
1927 .fsync
= f2fs_sync_file
,
1928 .fallocate
= f2fs_fallocate
,
1929 .unlocked_ioctl
= f2fs_ioctl
,
1930 #ifdef CONFIG_COMPAT
1931 .compat_ioctl
= f2fs_compat_ioctl
,
1933 .splice_read
= generic_file_splice_read
,
1934 .splice_write
= iter_file_splice_write
,