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,