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, false);
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 = get_next_page_offset(&dn, pgofs);
368 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
370 /* find data/hole in dnode block */
371 for (; dn.ofs_in_node < end_offset;
372 dn.ofs_in_node++, pgofs++,
373 data_ofs = (loff_t)pgofs << PAGE_CACHE_SHIFT) {
375 blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node);
377 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
385 if (whence == SEEK_DATA)
388 if (whence == SEEK_HOLE && data_ofs > isize)
391 return vfs_setpos(file, data_ofs, maxbytes);
397 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
399 struct inode *inode = file->f_mapping->host;
400 loff_t maxbytes = inode->i_sb->s_maxbytes;
406 return generic_file_llseek_size(file, offset, whence,
407 maxbytes, i_size_read(inode));
412 return f2fs_seek_block(file, offset, whence);
418 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
420 struct inode *inode = file_inode(file);
423 if (f2fs_encrypted_inode(inode)) {
424 err = f2fs_get_encryption_info(inode);
429 /* we don't need to use inline_data strictly */
430 err = f2fs_convert_inline_inode(inode);
435 vma->vm_ops = &f2fs_file_vm_ops;
439 static int f2fs_file_open(struct inode *inode, struct file *filp)
441 int ret = generic_file_open(inode, filp);
443 if (!ret && f2fs_encrypted_inode(inode)) {
444 ret = f2fs_get_encryption_info(inode);
451 int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
453 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
454 struct f2fs_node *raw_node;
455 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
458 raw_node = F2FS_NODE(dn->node_page);
459 addr = blkaddr_in_node(raw_node) + ofs;
461 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
462 block_t blkaddr = le32_to_cpu(*addr);
463 if (blkaddr == NULL_ADDR)
466 dn->data_blkaddr = NULL_ADDR;
467 set_data_blkaddr(dn);
468 invalidate_blocks(sbi, blkaddr);
469 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
470 clear_inode_flag(F2FS_I(dn->inode),
471 FI_FIRST_BLOCK_WRITTEN);
478 * once we invalidate valid blkaddr in range [ofs, ofs + count],
479 * we will invalidate all blkaddr in the whole range.
481 fofs = start_bidx_of_node(ofs_of_node(dn->node_page),
483 f2fs_update_extent_cache_range(dn, fofs, 0, len);
484 dec_valid_block_count(sbi, dn->inode, nr_free);
487 dn->ofs_in_node = ofs;
489 f2fs_update_time(sbi, REQ_TIME);
490 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
491 dn->ofs_in_node, nr_free);
495 void truncate_data_blocks(struct dnode_of_data *dn)
497 truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
500 static int truncate_partial_data_page(struct inode *inode, u64 from,
503 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
504 pgoff_t index = from >> PAGE_CACHE_SHIFT;
505 struct address_space *mapping = inode->i_mapping;
508 if (!offset && !cache_only)
512 page = f2fs_grab_cache_page(mapping, index, false);
513 if (page && PageUptodate(page))
515 f2fs_put_page(page, 1);
519 page = get_lock_data_page(inode, index, true);
523 f2fs_wait_on_page_writeback(page, DATA, true);
524 zero_user(page, offset, PAGE_CACHE_SIZE - offset);
525 if (!cache_only || !f2fs_encrypted_inode(inode) || !S_ISREG(inode->i_mode))
526 set_page_dirty(page);
527 f2fs_put_page(page, 1);
531 int truncate_blocks(struct inode *inode, u64 from, bool lock)
533 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
534 unsigned int blocksize = inode->i_sb->s_blocksize;
535 struct dnode_of_data dn;
537 int count = 0, err = 0;
539 bool truncate_page = false;
541 trace_f2fs_truncate_blocks_enter(inode, from);
543 free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1);
548 ipage = get_node_page(sbi, inode->i_ino);
550 err = PTR_ERR(ipage);
554 if (f2fs_has_inline_data(inode)) {
555 if (truncate_inline_inode(ipage, from))
556 set_page_dirty(ipage);
557 f2fs_put_page(ipage, 1);
558 truncate_page = true;
562 set_new_dnode(&dn, inode, ipage, NULL, 0);
563 err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE);
570 count = ADDRS_PER_PAGE(dn.node_page, inode);
572 count -= dn.ofs_in_node;
573 f2fs_bug_on(sbi, count < 0);
575 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
576 truncate_data_blocks_range(&dn, count);
582 err = truncate_inode_blocks(inode, free_from);
587 /* lastly zero out the first data page */
589 err = truncate_partial_data_page(inode, from, truncate_page);
591 trace_f2fs_truncate_blocks_exit(inode, err);
595 int f2fs_truncate(struct inode *inode, bool lock)
599 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
600 S_ISLNK(inode->i_mode)))
603 trace_f2fs_truncate(inode);
605 /* we should check inline_data size */
606 if (!f2fs_may_inline_data(inode)) {
607 err = f2fs_convert_inline_inode(inode);
612 err = truncate_blocks(inode, i_size_read(inode), lock);
616 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
617 mark_inode_dirty(inode);
621 int f2fs_getattr(struct vfsmount *mnt,
622 struct dentry *dentry, struct kstat *stat)
624 struct inode *inode = d_inode(dentry);
625 generic_fillattr(inode, stat);
630 #ifdef CONFIG_F2FS_FS_POSIX_ACL
631 static void __setattr_copy(struct inode *inode, const struct iattr *attr)
633 struct f2fs_inode_info *fi = F2FS_I(inode);
634 unsigned int ia_valid = attr->ia_valid;
636 if (ia_valid & ATTR_UID)
637 inode->i_uid = attr->ia_uid;
638 if (ia_valid & ATTR_GID)
639 inode->i_gid = attr->ia_gid;
640 if (ia_valid & ATTR_ATIME)
641 inode->i_atime = timespec_trunc(attr->ia_atime,
642 inode->i_sb->s_time_gran);
643 if (ia_valid & ATTR_MTIME)
644 inode->i_mtime = timespec_trunc(attr->ia_mtime,
645 inode->i_sb->s_time_gran);
646 if (ia_valid & ATTR_CTIME)
647 inode->i_ctime = timespec_trunc(attr->ia_ctime,
648 inode->i_sb->s_time_gran);
649 if (ia_valid & ATTR_MODE) {
650 umode_t mode = attr->ia_mode;
652 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
654 set_acl_inode(fi, mode);
658 #define __setattr_copy setattr_copy
661 int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
663 struct inode *inode = d_inode(dentry);
664 struct f2fs_inode_info *fi = F2FS_I(inode);
667 err = inode_change_ok(inode, attr);
671 if (attr->ia_valid & ATTR_SIZE) {
672 if (f2fs_encrypted_inode(inode) &&
673 f2fs_get_encryption_info(inode))
676 if (attr->ia_size <= i_size_read(inode)) {
677 truncate_setsize(inode, attr->ia_size);
678 err = f2fs_truncate(inode, true);
681 f2fs_balance_fs(F2FS_I_SB(inode), true);
684 * do not trim all blocks after i_size if target size is
685 * larger than i_size.
687 truncate_setsize(inode, attr->ia_size);
689 /* should convert inline inode here */
690 if (!f2fs_may_inline_data(inode)) {
691 err = f2fs_convert_inline_inode(inode);
695 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
699 __setattr_copy(inode, attr);
701 if (attr->ia_valid & ATTR_MODE) {
702 err = posix_acl_chmod(inode, get_inode_mode(inode));
703 if (err || is_inode_flag_set(fi, FI_ACL_MODE)) {
704 inode->i_mode = fi->i_acl_mode;
705 clear_inode_flag(fi, FI_ACL_MODE);
709 mark_inode_dirty(inode);
713 const struct inode_operations f2fs_file_inode_operations = {
714 .getattr = f2fs_getattr,
715 .setattr = f2fs_setattr,
716 .get_acl = f2fs_get_acl,
717 .set_acl = f2fs_set_acl,
718 #ifdef CONFIG_F2FS_FS_XATTR
719 .setxattr = generic_setxattr,
720 .getxattr = generic_getxattr,
721 .listxattr = f2fs_listxattr,
722 .removexattr = generic_removexattr,
724 .fiemap = f2fs_fiemap,
727 static int fill_zero(struct inode *inode, pgoff_t index,
728 loff_t start, loff_t len)
730 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
736 f2fs_balance_fs(sbi, true);
739 page = get_new_data_page(inode, NULL, index, false);
743 return PTR_ERR(page);
745 f2fs_wait_on_page_writeback(page, DATA, true);
746 zero_user(page, start, len);
747 set_page_dirty(page);
748 f2fs_put_page(page, 1);
752 int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
756 while (pg_start < pg_end) {
757 struct dnode_of_data dn;
758 pgoff_t end_offset, count;
760 set_new_dnode(&dn, inode, NULL, NULL, 0);
761 err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
763 if (err == -ENOENT) {
770 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
771 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
773 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
775 truncate_data_blocks_range(&dn, count);
783 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
785 pgoff_t pg_start, pg_end;
786 loff_t off_start, off_end;
789 ret = f2fs_convert_inline_inode(inode);
793 pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT;
794 pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT;
796 off_start = offset & (PAGE_CACHE_SIZE - 1);
797 off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
799 if (pg_start == pg_end) {
800 ret = fill_zero(inode, pg_start, off_start,
801 off_end - off_start);
806 ret = fill_zero(inode, pg_start++, off_start,
807 PAGE_CACHE_SIZE - off_start);
812 ret = fill_zero(inode, pg_end, 0, off_end);
817 if (pg_start < pg_end) {
818 struct address_space *mapping = inode->i_mapping;
819 loff_t blk_start, blk_end;
820 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
822 f2fs_balance_fs(sbi, true);
824 blk_start = (loff_t)pg_start << PAGE_CACHE_SHIFT;
825 blk_end = (loff_t)pg_end << PAGE_CACHE_SHIFT;
826 truncate_inode_pages_range(mapping, blk_start,
830 ret = truncate_hole(inode, pg_start, pg_end);
838 static int __exchange_data_block(struct inode *inode, pgoff_t src,
839 pgoff_t dst, bool full)
841 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
842 struct dnode_of_data dn;
844 bool do_replace = false;
847 set_new_dnode(&dn, inode, NULL, NULL, 0);
848 ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA);
849 if (ret && ret != -ENOENT) {
851 } else if (ret == -ENOENT) {
852 new_addr = NULL_ADDR;
854 new_addr = dn.data_blkaddr;
855 if (!is_checkpointed_data(sbi, new_addr)) {
856 dn.data_blkaddr = NULL_ADDR;
857 /* do not invalidate this block address */
858 set_data_blkaddr(&dn);
859 f2fs_update_extent_cache(&dn);
865 if (new_addr == NULL_ADDR)
866 return full ? truncate_hole(inode, dst, dst + 1) : 0;
869 struct page *ipage = get_node_page(sbi, inode->i_ino);
873 ret = PTR_ERR(ipage);
877 set_new_dnode(&dn, inode, ipage, NULL, 0);
878 ret = f2fs_reserve_block(&dn, dst);
882 truncate_data_blocks_range(&dn, 1);
884 get_node_info(sbi, dn.nid, &ni);
885 f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr,
889 struct page *psrc, *pdst;
891 psrc = get_lock_data_page(inode, src, true);
893 return PTR_ERR(psrc);
894 pdst = get_new_data_page(inode, NULL, dst, true);
896 f2fs_put_page(psrc, 1);
897 return PTR_ERR(pdst);
899 f2fs_copy_page(psrc, pdst);
900 set_page_dirty(pdst);
901 f2fs_put_page(pdst, 1);
902 f2fs_put_page(psrc, 1);
904 return truncate_hole(inode, src, src + 1);
909 if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) {
910 dn.data_blkaddr = new_addr;
911 set_data_blkaddr(&dn);
912 f2fs_update_extent_cache(&dn);
918 static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
920 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
921 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
924 for (; end < nrpages; start++, end++) {
925 f2fs_balance_fs(sbi, true);
927 ret = __exchange_data_block(inode, end, start, true);
935 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
937 pgoff_t pg_start, pg_end;
941 if (offset + len >= i_size_read(inode))
944 /* collapse range should be aligned to block size of f2fs. */
945 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
948 ret = f2fs_convert_inline_inode(inode);
952 pg_start = offset >> PAGE_CACHE_SHIFT;
953 pg_end = (offset + len) >> PAGE_CACHE_SHIFT;
955 /* write out all dirty pages from offset */
956 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
960 truncate_pagecache(inode, offset);
962 ret = f2fs_do_collapse(inode, pg_start, pg_end);
966 /* write out all moved pages, if possible */
967 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
968 truncate_pagecache(inode, offset);
970 new_size = i_size_read(inode) - len;
971 truncate_pagecache(inode, new_size);
973 ret = truncate_blocks(inode, new_size, true);
975 i_size_write(inode, new_size);
980 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
983 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
984 struct address_space *mapping = inode->i_mapping;
985 pgoff_t index, pg_start, pg_end;
986 loff_t new_size = i_size_read(inode);
987 loff_t off_start, off_end;
990 ret = inode_newsize_ok(inode, (len + offset));
994 ret = f2fs_convert_inline_inode(inode);
998 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1002 truncate_pagecache_range(inode, offset, offset + len - 1);
1004 pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT;
1005 pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT;
1007 off_start = offset & (PAGE_CACHE_SIZE - 1);
1008 off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
1010 if (pg_start == pg_end) {
1011 ret = fill_zero(inode, pg_start, off_start,
1012 off_end - off_start);
1016 if (offset + len > new_size)
1017 new_size = offset + len;
1018 new_size = max_t(loff_t, new_size, offset + len);
1021 ret = fill_zero(inode, pg_start++, off_start,
1022 PAGE_CACHE_SIZE - off_start);
1026 new_size = max_t(loff_t, new_size,
1027 (loff_t)pg_start << PAGE_CACHE_SHIFT);
1030 for (index = pg_start; index < pg_end; index++) {
1031 struct dnode_of_data dn;
1036 ipage = get_node_page(sbi, inode->i_ino);
1037 if (IS_ERR(ipage)) {
1038 ret = PTR_ERR(ipage);
1039 f2fs_unlock_op(sbi);
1043 set_new_dnode(&dn, inode, ipage, NULL, 0);
1044 ret = f2fs_reserve_block(&dn, index);
1046 f2fs_unlock_op(sbi);
1050 if (dn.data_blkaddr != NEW_ADDR) {
1051 invalidate_blocks(sbi, dn.data_blkaddr);
1053 dn.data_blkaddr = NEW_ADDR;
1054 set_data_blkaddr(&dn);
1056 dn.data_blkaddr = NULL_ADDR;
1057 f2fs_update_extent_cache(&dn);
1059 f2fs_put_dnode(&dn);
1060 f2fs_unlock_op(sbi);
1062 new_size = max_t(loff_t, new_size,
1063 (loff_t)(index + 1) << PAGE_CACHE_SHIFT);
1067 ret = fill_zero(inode, pg_end, 0, off_end);
1071 new_size = max_t(loff_t, new_size, offset + len);
1076 if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) {
1077 i_size_write(inode, new_size);
1078 mark_inode_dirty(inode);
1079 update_inode_page(inode);
1085 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1087 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1088 pgoff_t pg_start, pg_end, delta, nrpages, idx;
1092 new_size = i_size_read(inode) + len;
1093 if (new_size > inode->i_sb->s_maxbytes)
1096 if (offset >= i_size_read(inode))
1099 /* insert range should be aligned to block size of f2fs. */
1100 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1103 ret = f2fs_convert_inline_inode(inode);
1107 f2fs_balance_fs(sbi, true);
1109 ret = truncate_blocks(inode, i_size_read(inode), true);
1113 /* write out all dirty pages from offset */
1114 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1118 truncate_pagecache(inode, offset);
1120 pg_start = offset >> PAGE_CACHE_SHIFT;
1121 pg_end = (offset + len) >> PAGE_CACHE_SHIFT;
1122 delta = pg_end - pg_start;
1123 nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1125 for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) {
1127 ret = __exchange_data_block(inode, idx, idx + delta, false);
1128 f2fs_unlock_op(sbi);
1133 /* write out all moved pages, if possible */
1134 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1135 truncate_pagecache(inode, offset);
1138 i_size_write(inode, new_size);
1142 static int expand_inode_data(struct inode *inode, loff_t offset,
1143 loff_t len, int mode)
1145 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1146 pgoff_t index, pg_start, pg_end;
1147 loff_t new_size = i_size_read(inode);
1148 loff_t off_start, off_end;
1151 ret = inode_newsize_ok(inode, (len + offset));
1155 ret = f2fs_convert_inline_inode(inode);
1159 f2fs_balance_fs(sbi, true);
1161 pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT;
1162 pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT;
1164 off_start = offset & (PAGE_CACHE_SIZE - 1);
1165 off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
1169 for (index = pg_start; index <= pg_end; index++) {
1170 struct dnode_of_data dn;
1172 if (index == pg_end && !off_end)
1175 set_new_dnode(&dn, inode, NULL, NULL, 0);
1176 ret = f2fs_reserve_block(&dn, index);
1180 if (pg_start == pg_end)
1181 new_size = offset + len;
1182 else if (index == pg_start && off_start)
1183 new_size = (loff_t)(index + 1) << PAGE_CACHE_SHIFT;
1184 else if (index == pg_end)
1185 new_size = ((loff_t)index << PAGE_CACHE_SHIFT) +
1188 new_size += PAGE_CACHE_SIZE;
1191 if (!(mode & FALLOC_FL_KEEP_SIZE) &&
1192 i_size_read(inode) < new_size) {
1193 i_size_write(inode, new_size);
1194 mark_inode_dirty(inode);
1195 update_inode_page(inode);
1197 f2fs_unlock_op(sbi);
1202 static long f2fs_fallocate(struct file *file, int mode,
1203 loff_t offset, loff_t len)
1205 struct inode *inode = file_inode(file);
1208 /* f2fs only support ->fallocate for regular file */
1209 if (!S_ISREG(inode->i_mode))
1212 if (f2fs_encrypted_inode(inode) &&
1213 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1216 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1217 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1218 FALLOC_FL_INSERT_RANGE))
1223 if (mode & FALLOC_FL_PUNCH_HOLE) {
1224 if (offset >= inode->i_size)
1227 ret = punch_hole(inode, offset, len);
1228 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1229 ret = f2fs_collapse_range(inode, offset, len);
1230 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1231 ret = f2fs_zero_range(inode, offset, len, mode);
1232 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1233 ret = f2fs_insert_range(inode, offset, len);
1235 ret = expand_inode_data(inode, offset, len, mode);
1239 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
1240 mark_inode_dirty(inode);
1241 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1245 inode_unlock(inode);
1247 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1251 static int f2fs_release_file(struct inode *inode, struct file *filp)
1253 /* some remained atomic pages should discarded */
1254 if (f2fs_is_atomic_file(inode))
1255 commit_inmem_pages(inode, true);
1256 if (f2fs_is_volatile_file(inode)) {
1257 set_inode_flag(F2FS_I(inode), FI_DROP_CACHE);
1258 filemap_fdatawrite(inode->i_mapping);
1259 clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE);
1264 #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
1265 #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
1267 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
1271 else if (S_ISREG(mode))
1272 return flags & F2FS_REG_FLMASK;
1274 return flags & F2FS_OTHER_FLMASK;
1277 static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1279 struct inode *inode = file_inode(filp);
1280 struct f2fs_inode_info *fi = F2FS_I(inode);
1281 unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE;
1282 return put_user(flags, (int __user *)arg);
1285 static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1287 struct inode *inode = file_inode(filp);
1288 struct f2fs_inode_info *fi = F2FS_I(inode);
1289 unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE;
1290 unsigned int oldflags;
1293 ret = mnt_want_write_file(filp);
1297 if (!inode_owner_or_capable(inode)) {
1302 if (get_user(flags, (int __user *)arg)) {
1307 flags = f2fs_mask_flags(inode->i_mode, flags);
1311 oldflags = fi->i_flags;
1313 if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
1314 if (!capable(CAP_LINUX_IMMUTABLE)) {
1315 inode_unlock(inode);
1321 flags = flags & FS_FL_USER_MODIFIABLE;
1322 flags |= oldflags & ~FS_FL_USER_MODIFIABLE;
1323 fi->i_flags = flags;
1324 inode_unlock(inode);
1326 f2fs_set_inode_flags(inode);
1327 inode->i_ctime = CURRENT_TIME;
1328 mark_inode_dirty(inode);
1330 mnt_drop_write_file(filp);
1334 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1336 struct inode *inode = file_inode(filp);
1338 return put_user(inode->i_generation, (int __user *)arg);
1341 static int f2fs_ioc_start_atomic_write(struct file *filp)
1343 struct inode *inode = file_inode(filp);
1346 if (!inode_owner_or_capable(inode))
1349 if (f2fs_is_atomic_file(inode))
1352 ret = f2fs_convert_inline_inode(inode);
1356 set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
1357 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1362 static int f2fs_ioc_commit_atomic_write(struct file *filp)
1364 struct inode *inode = file_inode(filp);
1367 if (!inode_owner_or_capable(inode))
1370 if (f2fs_is_volatile_file(inode))
1373 ret = mnt_want_write_file(filp);
1377 if (f2fs_is_atomic_file(inode)) {
1378 clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
1379 ret = commit_inmem_pages(inode, false);
1381 set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
1386 ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0);
1388 mnt_drop_write_file(filp);
1392 static int f2fs_ioc_start_volatile_write(struct file *filp)
1394 struct inode *inode = file_inode(filp);
1397 if (!inode_owner_or_capable(inode))
1400 if (f2fs_is_volatile_file(inode))
1403 ret = f2fs_convert_inline_inode(inode);
1407 set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
1408 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1412 static int f2fs_ioc_release_volatile_write(struct file *filp)
1414 struct inode *inode = file_inode(filp);
1416 if (!inode_owner_or_capable(inode))
1419 if (!f2fs_is_volatile_file(inode))
1422 if (!f2fs_is_first_block_written(inode))
1423 return truncate_partial_data_page(inode, 0, true);
1425 return punch_hole(inode, 0, F2FS_BLKSIZE);
1428 static int f2fs_ioc_abort_volatile_write(struct file *filp)
1430 struct inode *inode = file_inode(filp);
1433 if (!inode_owner_or_capable(inode))
1436 ret = mnt_want_write_file(filp);
1440 if (f2fs_is_atomic_file(inode)) {
1441 clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
1442 commit_inmem_pages(inode, true);
1444 if (f2fs_is_volatile_file(inode)) {
1445 clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
1446 ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0);
1449 mnt_drop_write_file(filp);
1450 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1454 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1456 struct inode *inode = file_inode(filp);
1457 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1458 struct super_block *sb = sbi->sb;
1461 if (!capable(CAP_SYS_ADMIN))
1464 if (get_user(in, (__u32 __user *)arg))
1468 case F2FS_GOING_DOWN_FULLSYNC:
1469 sb = freeze_bdev(sb->s_bdev);
1470 if (sb && !IS_ERR(sb)) {
1471 f2fs_stop_checkpoint(sbi);
1472 thaw_bdev(sb->s_bdev, sb);
1475 case F2FS_GOING_DOWN_METASYNC:
1476 /* do checkpoint only */
1477 f2fs_sync_fs(sb, 1);
1478 f2fs_stop_checkpoint(sbi);
1480 case F2FS_GOING_DOWN_NOSYNC:
1481 f2fs_stop_checkpoint(sbi);
1483 case F2FS_GOING_DOWN_METAFLUSH:
1484 sync_meta_pages(sbi, META, LONG_MAX);
1485 f2fs_stop_checkpoint(sbi);
1490 f2fs_update_time(sbi, REQ_TIME);
1494 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1496 struct inode *inode = file_inode(filp);
1497 struct super_block *sb = inode->i_sb;
1498 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1499 struct fstrim_range range;
1502 if (!capable(CAP_SYS_ADMIN))
1505 if (!blk_queue_discard(q))
1508 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
1512 range.minlen = max((unsigned int)range.minlen,
1513 q->limits.discard_granularity);
1514 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
1518 if (copy_to_user((struct fstrim_range __user *)arg, &range,
1521 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1525 static bool uuid_is_nonzero(__u8 u[16])
1529 for (i = 0; i < 16; i++)
1535 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
1537 #ifdef CONFIG_F2FS_FS_ENCRYPTION
1538 struct f2fs_encryption_policy policy;
1539 struct inode *inode = file_inode(filp);
1541 if (copy_from_user(&policy, (struct f2fs_encryption_policy __user *)arg,
1545 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1546 return f2fs_process_policy(&policy, inode);
1552 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
1554 #ifdef CONFIG_F2FS_FS_ENCRYPTION
1555 struct f2fs_encryption_policy policy;
1556 struct inode *inode = file_inode(filp);
1559 err = f2fs_get_policy(inode, &policy);
1563 if (copy_to_user((struct f2fs_encryption_policy __user *)arg, &policy,
1572 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
1574 struct inode *inode = file_inode(filp);
1575 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1578 if (!f2fs_sb_has_crypto(inode->i_sb))
1581 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
1584 err = mnt_want_write_file(filp);
1588 /* update superblock with uuid */
1589 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
1591 err = f2fs_commit_super(sbi, false);
1594 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
1595 mnt_drop_write_file(filp);
1598 mnt_drop_write_file(filp);
1600 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
1606 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
1608 struct inode *inode = file_inode(filp);
1609 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1612 if (!capable(CAP_SYS_ADMIN))
1615 if (get_user(sync, (__u32 __user *)arg))
1618 if (f2fs_readonly(sbi->sb))
1622 if (!mutex_trylock(&sbi->gc_mutex))
1625 mutex_lock(&sbi->gc_mutex);
1628 return f2fs_gc(sbi, sync);
1631 static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
1633 struct inode *inode = file_inode(filp);
1634 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1636 if (!capable(CAP_SYS_ADMIN))
1639 if (f2fs_readonly(sbi->sb))
1642 return f2fs_sync_fs(sbi->sb, 1);
1645 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
1647 struct f2fs_defragment *range)
1649 struct inode *inode = file_inode(filp);
1650 struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
1651 struct extent_info ei;
1652 pgoff_t pg_start, pg_end;
1653 unsigned int blk_per_seg = sbi->blocks_per_seg;
1654 unsigned int total = 0, sec_num;
1655 unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg;
1656 block_t blk_end = 0;
1657 bool fragmented = false;
1660 /* if in-place-update policy is enabled, don't waste time here */
1661 if (need_inplace_update(inode))
1664 pg_start = range->start >> PAGE_CACHE_SHIFT;
1665 pg_end = (range->start + range->len) >> PAGE_CACHE_SHIFT;
1667 f2fs_balance_fs(sbi, true);
1671 /* writeback all dirty pages in the range */
1672 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
1673 range->start + range->len - 1);
1678 * lookup mapping info in extent cache, skip defragmenting if physical
1679 * block addresses are continuous.
1681 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
1682 if (ei.fofs + ei.len >= pg_end)
1686 map.m_lblk = pg_start;
1689 * lookup mapping info in dnode page cache, skip defragmenting if all
1690 * physical block addresses are continuous even if there are hole(s)
1691 * in logical blocks.
1693 while (map.m_lblk < pg_end) {
1694 map.m_len = pg_end - map.m_lblk;
1695 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
1699 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
1704 if (blk_end && blk_end != map.m_pblk) {
1708 blk_end = map.m_pblk + map.m_len;
1710 map.m_lblk += map.m_len;
1716 map.m_lblk = pg_start;
1717 map.m_len = pg_end - pg_start;
1719 sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec;
1722 * make sure there are enough free section for LFS allocation, this can
1723 * avoid defragment running in SSR mode when free section are allocated
1726 if (has_not_enough_free_secs(sbi, sec_num)) {
1731 while (map.m_lblk < pg_end) {
1736 map.m_len = pg_end - map.m_lblk;
1737 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
1741 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
1746 set_inode_flag(F2FS_I(inode), FI_DO_DEFRAG);
1749 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
1752 page = get_lock_data_page(inode, idx, true);
1754 err = PTR_ERR(page);
1758 set_page_dirty(page);
1759 f2fs_put_page(page, 1);
1768 if (idx < pg_end && cnt < blk_per_seg)
1771 clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG);
1773 err = filemap_fdatawrite(inode->i_mapping);
1778 clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG);
1780 inode_unlock(inode);
1782 range->len = (u64)total << PAGE_CACHE_SHIFT;
1786 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
1788 struct inode *inode = file_inode(filp);
1789 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1790 struct f2fs_defragment range;
1793 if (!capable(CAP_SYS_ADMIN))
1796 if (!S_ISREG(inode->i_mode))
1799 err = mnt_want_write_file(filp);
1803 if (f2fs_readonly(sbi->sb)) {
1808 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
1814 /* verify alignment of offset & size */
1815 if (range.start & (F2FS_BLKSIZE - 1) ||
1816 range.len & (F2FS_BLKSIZE - 1)) {
1821 err = f2fs_defragment_range(sbi, filp, &range);
1822 f2fs_update_time(sbi, REQ_TIME);
1826 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
1830 mnt_drop_write_file(filp);
1834 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1837 case F2FS_IOC_GETFLAGS:
1838 return f2fs_ioc_getflags(filp, arg);
1839 case F2FS_IOC_SETFLAGS:
1840 return f2fs_ioc_setflags(filp, arg);
1841 case F2FS_IOC_GETVERSION:
1842 return f2fs_ioc_getversion(filp, arg);
1843 case F2FS_IOC_START_ATOMIC_WRITE:
1844 return f2fs_ioc_start_atomic_write(filp);
1845 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
1846 return f2fs_ioc_commit_atomic_write(filp);
1847 case F2FS_IOC_START_VOLATILE_WRITE:
1848 return f2fs_ioc_start_volatile_write(filp);
1849 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
1850 return f2fs_ioc_release_volatile_write(filp);
1851 case F2FS_IOC_ABORT_VOLATILE_WRITE:
1852 return f2fs_ioc_abort_volatile_write(filp);
1853 case F2FS_IOC_SHUTDOWN:
1854 return f2fs_ioc_shutdown(filp, arg);
1856 return f2fs_ioc_fitrim(filp, arg);
1857 case F2FS_IOC_SET_ENCRYPTION_POLICY:
1858 return f2fs_ioc_set_encryption_policy(filp, arg);
1859 case F2FS_IOC_GET_ENCRYPTION_POLICY:
1860 return f2fs_ioc_get_encryption_policy(filp, arg);
1861 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
1862 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
1863 case F2FS_IOC_GARBAGE_COLLECT:
1864 return f2fs_ioc_gc(filp, arg);
1865 case F2FS_IOC_WRITE_CHECKPOINT:
1866 return f2fs_ioc_write_checkpoint(filp, arg);
1867 case F2FS_IOC_DEFRAGMENT:
1868 return f2fs_ioc_defragment(filp, arg);
1874 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
1876 struct file *file = iocb->ki_filp;
1877 struct inode *inode = file_inode(file);
1880 if (f2fs_encrypted_inode(inode) &&
1881 !f2fs_has_encryption_key(inode) &&
1882 f2fs_get_encryption_info(inode))
1886 ret = generic_write_checks(iocb, from);
1888 ret = f2fs_preallocate_blocks(iocb, from);
1890 ret = __generic_file_write_iter(iocb, from);
1892 inode_unlock(inode);
1897 err = generic_write_sync(file, iocb->ki_pos - ret, ret);
1904 #ifdef CONFIG_COMPAT
1905 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1908 case F2FS_IOC32_GETFLAGS:
1909 cmd = F2FS_IOC_GETFLAGS;
1911 case F2FS_IOC32_SETFLAGS:
1912 cmd = F2FS_IOC_SETFLAGS;
1914 case F2FS_IOC32_GETVERSION:
1915 cmd = F2FS_IOC_GETVERSION;
1917 case F2FS_IOC_START_ATOMIC_WRITE:
1918 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
1919 case F2FS_IOC_START_VOLATILE_WRITE:
1920 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
1921 case F2FS_IOC_ABORT_VOLATILE_WRITE:
1922 case F2FS_IOC_SHUTDOWN:
1923 case F2FS_IOC_SET_ENCRYPTION_POLICY:
1924 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
1925 case F2FS_IOC_GET_ENCRYPTION_POLICY:
1926 case F2FS_IOC_GARBAGE_COLLECT:
1927 case F2FS_IOC_WRITE_CHECKPOINT:
1928 case F2FS_IOC_DEFRAGMENT:
1931 return -ENOIOCTLCMD;
1933 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
1937 const struct file_operations f2fs_file_operations = {
1938 .llseek = f2fs_llseek,
1939 .read_iter = generic_file_read_iter,
1940 .write_iter = f2fs_file_write_iter,
1941 .open = f2fs_file_open,
1942 .release = f2fs_release_file,
1943 .mmap = f2fs_file_mmap,
1944 .fsync = f2fs_sync_file,
1945 .fallocate = f2fs_fallocate,
1946 .unlocked_ioctl = f2fs_ioctl,
1947 #ifdef CONFIG_COMPAT
1948 .compat_ioctl = f2fs_compat_ioctl,
1950 .splice_read = generic_file_splice_read,
1951 .splice_write = iter_file_splice_write,