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/uio.h>
24 #include <linux/uuid.h>
25 #include <linux/file.h>
34 #include <trace/events/f2fs.h>
36 static int f2fs_vm_page_mkwrite(struct vm_fault *vmf)
38 struct page *page = vmf->page;
39 struct inode *inode = file_inode(vmf->vma->vm_file);
40 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
41 struct dnode_of_data dn;
44 sb_start_pagefault(inode->i_sb);
46 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
48 /* block allocation */
50 set_new_dnode(&dn, inode, NULL, NULL, 0);
51 err = f2fs_reserve_block(&dn, page->index);
59 f2fs_balance_fs(sbi, dn.node_changed);
61 file_update_time(vmf->vma->vm_file);
63 if (unlikely(page->mapping != inode->i_mapping ||
64 page_offset(page) > i_size_read(inode) ||
65 !PageUptodate(page))) {
72 * check to see if the page is mapped already (no holes)
74 if (PageMappedToDisk(page))
77 /* page is wholly or partially inside EOF */
78 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
81 offset = i_size_read(inode) & ~PAGE_MASK;
82 zero_user_segment(page, offset, PAGE_SIZE);
85 if (!PageUptodate(page))
86 SetPageUptodate(page);
88 trace_f2fs_vm_page_mkwrite(page, DATA);
91 f2fs_wait_on_page_writeback(page, DATA, false);
93 /* wait for GCed encrypted page writeback */
94 if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
95 f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr);
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 *pino = parent_ino(dentry);
124 static inline bool need_do_checkpoint(struct inode *inode)
126 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
127 bool need_cp = false;
129 if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
131 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
133 else if (file_wrong_pino(inode))
135 else if (!space_for_roll_forward(sbi))
137 else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
139 else if (test_opt(sbi, FASTBOOT))
141 else if (sbi->active_logs == 2)
147 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
149 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
151 /* But we need to avoid that there are some inode updates */
152 if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino))
158 static void try_to_fix_pino(struct inode *inode)
160 struct f2fs_inode_info *fi = F2FS_I(inode);
163 down_write(&fi->i_sem);
164 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
165 get_parent_ino(inode, &pino)) {
166 f2fs_i_pino_write(inode, pino);
167 file_got_pino(inode);
169 up_write(&fi->i_sem);
172 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
173 int datasync, bool atomic)
175 struct inode *inode = file->f_mapping->host;
176 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
177 nid_t ino = inode->i_ino;
179 bool need_cp = false;
180 struct writeback_control wbc = {
181 .sync_mode = WB_SYNC_ALL,
182 .nr_to_write = LONG_MAX,
186 if (unlikely(f2fs_readonly(inode->i_sb)))
189 trace_f2fs_sync_file_enter(inode);
191 /* if fdatasync is triggered, let's do in-place-update */
192 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
193 set_inode_flag(inode, FI_NEED_IPU);
194 ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
195 clear_inode_flag(inode, FI_NEED_IPU);
198 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
202 /* if the inode is dirty, let's recover all the time */
203 if (!f2fs_skip_inode_update(inode, datasync)) {
204 f2fs_write_inode(inode, NULL);
209 * if there is no written data, don't waste time to write recovery info.
211 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
212 !exist_written_data(sbi, ino, APPEND_INO)) {
214 /* it may call write_inode just prior to fsync */
215 if (need_inode_page_update(sbi, ino))
218 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
219 exist_written_data(sbi, ino, UPDATE_INO))
225 * Both of fdatasync() and fsync() are able to be recovered from
228 down_read(&F2FS_I(inode)->i_sem);
229 need_cp = need_do_checkpoint(inode);
230 up_read(&F2FS_I(inode)->i_sem);
233 /* all the dirty node pages should be flushed for POR */
234 ret = f2fs_sync_fs(inode->i_sb, 1);
237 * We've secured consistency through sync_fs. Following pino
238 * will be used only for fsynced inodes after checkpoint.
240 try_to_fix_pino(inode);
241 clear_inode_flag(inode, FI_APPEND_WRITE);
242 clear_inode_flag(inode, FI_UPDATE_WRITE);
246 ret = fsync_node_pages(sbi, inode, &wbc, atomic);
250 /* if cp_error was enabled, we should avoid infinite loop */
251 if (unlikely(f2fs_cp_error(sbi))) {
256 if (need_inode_block_update(sbi, ino)) {
257 f2fs_mark_inode_dirty_sync(inode, true);
258 f2fs_write_inode(inode, NULL);
262 ret = wait_on_node_pages_writeback(sbi, ino);
266 /* once recovery info is written, don't need to tack this */
267 remove_ino_entry(sbi, ino, APPEND_INO);
268 clear_inode_flag(inode, FI_APPEND_WRITE);
270 remove_ino_entry(sbi, ino, UPDATE_INO);
271 clear_inode_flag(inode, FI_UPDATE_WRITE);
273 ret = f2fs_issue_flush(sbi);
274 f2fs_update_time(sbi, REQ_TIME);
276 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
277 f2fs_trace_ios(NULL, 1);
281 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
283 return f2fs_do_sync_file(file, start, end, datasync, false);
286 static pgoff_t __get_first_dirty_index(struct address_space *mapping,
287 pgoff_t pgofs, int whence)
292 if (whence != SEEK_DATA)
295 /* find first dirty page index */
296 pagevec_init(&pvec, 0);
297 nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs,
298 PAGECACHE_TAG_DIRTY, 1);
299 pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX;
300 pagevec_release(&pvec);
304 static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
309 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
310 (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR))
314 if (blkaddr == NULL_ADDR)
321 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
323 struct inode *inode = file->f_mapping->host;
324 loff_t maxbytes = inode->i_sb->s_maxbytes;
325 struct dnode_of_data dn;
326 pgoff_t pgofs, end_offset, dirty;
327 loff_t data_ofs = offset;
333 isize = i_size_read(inode);
337 /* handle inline data case */
338 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
339 if (whence == SEEK_HOLE)
344 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
346 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
348 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
349 set_new_dnode(&dn, inode, NULL, NULL, 0);
350 err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
351 if (err && err != -ENOENT) {
353 } else if (err == -ENOENT) {
354 /* direct node does not exists */
355 if (whence == SEEK_DATA) {
356 pgofs = get_next_page_offset(&dn, pgofs);
363 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
365 /* find data/hole in dnode block */
366 for (; dn.ofs_in_node < end_offset;
367 dn.ofs_in_node++, pgofs++,
368 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
370 blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node);
372 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
380 if (whence == SEEK_DATA)
383 if (whence == SEEK_HOLE && data_ofs > isize)
386 return vfs_setpos(file, data_ofs, maxbytes);
392 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
394 struct inode *inode = file->f_mapping->host;
395 loff_t maxbytes = inode->i_sb->s_maxbytes;
401 return generic_file_llseek_size(file, offset, whence,
402 maxbytes, i_size_read(inode));
407 return f2fs_seek_block(file, offset, whence);
413 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
415 struct inode *inode = file_inode(file);
418 if (f2fs_encrypted_inode(inode)) {
419 err = fscrypt_get_encryption_info(inode);
422 if (!f2fs_encrypted_inode(inode))
426 /* we don't need to use inline_data strictly */
427 err = f2fs_convert_inline_inode(inode);
432 vma->vm_ops = &f2fs_file_vm_ops;
436 static int f2fs_file_open(struct inode *inode, struct file *filp)
438 int ret = generic_file_open(inode, filp);
441 if (!ret && f2fs_encrypted_inode(inode)) {
442 ret = fscrypt_get_encryption_info(inode);
445 if (!fscrypt_has_encryption_key(inode))
448 dir = dget_parent(file_dentry(filp));
449 if (f2fs_encrypted_inode(d_inode(dir)) &&
450 !fscrypt_has_permitted_context(d_inode(dir), inode)) {
458 int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
460 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
461 struct f2fs_node *raw_node;
462 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
465 raw_node = F2FS_NODE(dn->node_page);
466 addr = blkaddr_in_node(raw_node) + ofs;
468 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
469 block_t blkaddr = le32_to_cpu(*addr);
470 if (blkaddr == NULL_ADDR)
473 dn->data_blkaddr = NULL_ADDR;
474 set_data_blkaddr(dn);
475 invalidate_blocks(sbi, blkaddr);
476 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
477 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
484 * once we invalidate valid blkaddr in range [ofs, ofs + count],
485 * we will invalidate all blkaddr in the whole range.
487 fofs = start_bidx_of_node(ofs_of_node(dn->node_page),
489 f2fs_update_extent_cache_range(dn, fofs, 0, len);
490 dec_valid_block_count(sbi, dn->inode, nr_free);
492 dn->ofs_in_node = ofs;
494 f2fs_update_time(sbi, REQ_TIME);
495 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
496 dn->ofs_in_node, nr_free);
500 void truncate_data_blocks(struct dnode_of_data *dn)
502 truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
505 static int truncate_partial_data_page(struct inode *inode, u64 from,
508 unsigned offset = from & (PAGE_SIZE - 1);
509 pgoff_t index = from >> PAGE_SHIFT;
510 struct address_space *mapping = inode->i_mapping;
513 if (!offset && !cache_only)
517 page = find_lock_page(mapping, index);
518 if (page && PageUptodate(page))
520 f2fs_put_page(page, 1);
524 page = get_lock_data_page(inode, index, true);
526 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
528 f2fs_wait_on_page_writeback(page, DATA, true);
529 zero_user(page, offset, PAGE_SIZE - offset);
530 if (!cache_only || !f2fs_encrypted_inode(inode) ||
531 !S_ISREG(inode->i_mode))
532 set_page_dirty(page);
533 f2fs_put_page(page, 1);
537 int truncate_blocks(struct inode *inode, u64 from, bool lock)
539 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
540 unsigned int blocksize = inode->i_sb->s_blocksize;
541 struct dnode_of_data dn;
543 int count = 0, err = 0;
545 bool truncate_page = false;
547 trace_f2fs_truncate_blocks_enter(inode, from);
549 free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1);
551 if (free_from >= sbi->max_file_blocks)
557 ipage = get_node_page(sbi, inode->i_ino);
559 err = PTR_ERR(ipage);
563 if (f2fs_has_inline_data(inode)) {
564 truncate_inline_inode(inode, ipage, from);
565 f2fs_put_page(ipage, 1);
566 truncate_page = true;
570 set_new_dnode(&dn, inode, ipage, NULL, 0);
571 err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
578 count = ADDRS_PER_PAGE(dn.node_page, inode);
580 count -= dn.ofs_in_node;
581 f2fs_bug_on(sbi, count < 0);
583 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
584 truncate_data_blocks_range(&dn, count);
590 err = truncate_inode_blocks(inode, free_from);
595 /* lastly zero out the first data page */
597 err = truncate_partial_data_page(inode, from, truncate_page);
599 trace_f2fs_truncate_blocks_exit(inode, err);
603 int f2fs_truncate(struct inode *inode)
607 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
608 S_ISLNK(inode->i_mode)))
611 trace_f2fs_truncate(inode);
613 #ifdef CONFIG_F2FS_FAULT_INJECTION
614 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
615 f2fs_show_injection_info(FAULT_TRUNCATE);
619 /* we should check inline_data size */
620 if (!f2fs_may_inline_data(inode)) {
621 err = f2fs_convert_inline_inode(inode);
626 err = truncate_blocks(inode, i_size_read(inode), true);
630 inode->i_mtime = inode->i_ctime = current_time(inode);
631 f2fs_mark_inode_dirty_sync(inode, false);
635 int f2fs_getattr(const struct path *path, struct kstat *stat,
636 u32 request_mask, unsigned int query_flags)
638 struct inode *inode = d_inode(path->dentry);
639 struct f2fs_inode_info *fi = F2FS_I(inode);
642 flags = fi->i_flags & FS_FL_USER_VISIBLE;
643 if (flags & FS_APPEND_FL)
644 stat->attributes |= STATX_ATTR_APPEND;
645 if (flags & FS_COMPR_FL)
646 stat->attributes |= STATX_ATTR_COMPRESSED;
647 if (f2fs_encrypted_inode(inode))
648 stat->attributes |= STATX_ATTR_ENCRYPTED;
649 if (flags & FS_IMMUTABLE_FL)
650 stat->attributes |= STATX_ATTR_IMMUTABLE;
651 if (flags & FS_NODUMP_FL)
652 stat->attributes |= STATX_ATTR_NODUMP;
654 stat->attributes_mask |= (STATX_ATTR_APPEND |
655 STATX_ATTR_COMPRESSED |
656 STATX_ATTR_ENCRYPTED |
657 STATX_ATTR_IMMUTABLE |
660 generic_fillattr(inode, stat);
665 #ifdef CONFIG_F2FS_FS_POSIX_ACL
666 static void __setattr_copy(struct inode *inode, const struct iattr *attr)
668 unsigned int ia_valid = attr->ia_valid;
670 if (ia_valid & ATTR_UID)
671 inode->i_uid = attr->ia_uid;
672 if (ia_valid & ATTR_GID)
673 inode->i_gid = attr->ia_gid;
674 if (ia_valid & ATTR_ATIME)
675 inode->i_atime = timespec_trunc(attr->ia_atime,
676 inode->i_sb->s_time_gran);
677 if (ia_valid & ATTR_MTIME)
678 inode->i_mtime = timespec_trunc(attr->ia_mtime,
679 inode->i_sb->s_time_gran);
680 if (ia_valid & ATTR_CTIME)
681 inode->i_ctime = timespec_trunc(attr->ia_ctime,
682 inode->i_sb->s_time_gran);
683 if (ia_valid & ATTR_MODE) {
684 umode_t mode = attr->ia_mode;
686 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
688 set_acl_inode(inode, mode);
692 #define __setattr_copy setattr_copy
695 int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
697 struct inode *inode = d_inode(dentry);
699 bool size_changed = false;
701 err = setattr_prepare(dentry, attr);
705 if (attr->ia_valid & ATTR_SIZE) {
706 if (f2fs_encrypted_inode(inode) &&
707 fscrypt_get_encryption_info(inode))
710 if (attr->ia_size <= i_size_read(inode)) {
711 truncate_setsize(inode, attr->ia_size);
712 err = f2fs_truncate(inode);
717 * do not trim all blocks after i_size if target size is
718 * larger than i_size.
720 truncate_setsize(inode, attr->ia_size);
722 /* should convert inline inode here */
723 if (!f2fs_may_inline_data(inode)) {
724 err = f2fs_convert_inline_inode(inode);
728 inode->i_mtime = inode->i_ctime = current_time(inode);
734 __setattr_copy(inode, attr);
736 if (attr->ia_valid & ATTR_MODE) {
737 err = posix_acl_chmod(inode, get_inode_mode(inode));
738 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
739 inode->i_mode = F2FS_I(inode)->i_acl_mode;
740 clear_inode_flag(inode, FI_ACL_MODE);
744 /* file size may changed here */
745 f2fs_mark_inode_dirty_sync(inode, size_changed);
747 /* inode change will produce dirty node pages flushed by checkpoint */
748 f2fs_balance_fs(F2FS_I_SB(inode), true);
753 const struct inode_operations f2fs_file_inode_operations = {
754 .getattr = f2fs_getattr,
755 .setattr = f2fs_setattr,
756 .get_acl = f2fs_get_acl,
757 .set_acl = f2fs_set_acl,
758 #ifdef CONFIG_F2FS_FS_XATTR
759 .listxattr = f2fs_listxattr,
761 .fiemap = f2fs_fiemap,
764 static int fill_zero(struct inode *inode, pgoff_t index,
765 loff_t start, loff_t len)
767 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
773 f2fs_balance_fs(sbi, true);
776 page = get_new_data_page(inode, NULL, index, false);
780 return PTR_ERR(page);
782 f2fs_wait_on_page_writeback(page, DATA, true);
783 zero_user(page, start, len);
784 set_page_dirty(page);
785 f2fs_put_page(page, 1);
789 int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
793 while (pg_start < pg_end) {
794 struct dnode_of_data dn;
795 pgoff_t end_offset, count;
797 set_new_dnode(&dn, inode, NULL, NULL, 0);
798 err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
800 if (err == -ENOENT) {
807 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
808 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
810 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
812 truncate_data_blocks_range(&dn, count);
820 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
822 pgoff_t pg_start, pg_end;
823 loff_t off_start, off_end;
826 ret = f2fs_convert_inline_inode(inode);
830 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
831 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
833 off_start = offset & (PAGE_SIZE - 1);
834 off_end = (offset + len) & (PAGE_SIZE - 1);
836 if (pg_start == pg_end) {
837 ret = fill_zero(inode, pg_start, off_start,
838 off_end - off_start);
843 ret = fill_zero(inode, pg_start++, off_start,
844 PAGE_SIZE - off_start);
849 ret = fill_zero(inode, pg_end, 0, off_end);
854 if (pg_start < pg_end) {
855 struct address_space *mapping = inode->i_mapping;
856 loff_t blk_start, blk_end;
857 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
859 f2fs_balance_fs(sbi, true);
861 blk_start = (loff_t)pg_start << PAGE_SHIFT;
862 blk_end = (loff_t)pg_end << PAGE_SHIFT;
863 truncate_inode_pages_range(mapping, blk_start,
867 ret = truncate_hole(inode, pg_start, pg_end);
875 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
876 int *do_replace, pgoff_t off, pgoff_t len)
878 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
879 struct dnode_of_data dn;
883 set_new_dnode(&dn, inode, NULL, NULL, 0);
884 ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
885 if (ret && ret != -ENOENT) {
887 } else if (ret == -ENOENT) {
888 if (dn.max_level == 0)
890 done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len);
896 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
897 dn.ofs_in_node, len);
898 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
899 *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node);
900 if (!is_checkpointed_data(sbi, *blkaddr)) {
902 if (test_opt(sbi, LFS)) {
907 /* do not invalidate this block address */
908 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
921 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
922 int *do_replace, pgoff_t off, int len)
924 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
925 struct dnode_of_data dn;
928 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
929 if (*do_replace == 0)
932 set_new_dnode(&dn, inode, NULL, NULL, 0);
933 ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
935 dec_valid_block_count(sbi, inode, 1);
936 invalidate_blocks(sbi, *blkaddr);
938 f2fs_update_data_blkaddr(&dn, *blkaddr);
945 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
946 block_t *blkaddr, int *do_replace,
947 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
949 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
954 if (blkaddr[i] == NULL_ADDR && !full) {
959 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
960 struct dnode_of_data dn;
965 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
966 ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
970 get_node_info(sbi, dn.nid, &ni);
972 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
973 dn.ofs_in_node, len - i);
975 dn.data_blkaddr = datablock_addr(dn.node_page,
977 truncate_data_blocks_range(&dn, 1);
980 f2fs_i_blocks_write(src_inode,
982 f2fs_i_blocks_write(dst_inode,
984 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
985 blkaddr[i], ni.version, true, false);
991 new_size = (dst + i) << PAGE_SHIFT;
992 if (dst_inode->i_size < new_size)
993 f2fs_i_size_write(dst_inode, new_size);
994 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
998 struct page *psrc, *pdst;
1000 psrc = get_lock_data_page(src_inode, src + i, true);
1002 return PTR_ERR(psrc);
1003 pdst = get_new_data_page(dst_inode, NULL, dst + i,
1006 f2fs_put_page(psrc, 1);
1007 return PTR_ERR(pdst);
1009 f2fs_copy_page(psrc, pdst);
1010 set_page_dirty(pdst);
1011 f2fs_put_page(pdst, 1);
1012 f2fs_put_page(psrc, 1);
1014 ret = truncate_hole(src_inode, src + i, src + i + 1);
1023 static int __exchange_data_block(struct inode *src_inode,
1024 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1025 pgoff_t len, bool full)
1027 block_t *src_blkaddr;
1033 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len);
1035 src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * olen, GFP_KERNEL);
1039 do_replace = f2fs_kvzalloc(sizeof(int) * olen, GFP_KERNEL);
1041 kvfree(src_blkaddr);
1045 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1046 do_replace, src, olen);
1050 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1051 do_replace, src, dst, olen, full);
1059 kvfree(src_blkaddr);
1065 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len);
1066 kvfree(src_blkaddr);
1071 static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
1073 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1074 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1077 f2fs_balance_fs(sbi, true);
1080 f2fs_drop_extent_tree(inode);
1082 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1083 f2fs_unlock_op(sbi);
1087 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1089 pgoff_t pg_start, pg_end;
1093 if (offset + len >= i_size_read(inode))
1096 /* collapse range should be aligned to block size of f2fs. */
1097 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1100 ret = f2fs_convert_inline_inode(inode);
1104 pg_start = offset >> PAGE_SHIFT;
1105 pg_end = (offset + len) >> PAGE_SHIFT;
1107 /* write out all dirty pages from offset */
1108 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1112 truncate_pagecache(inode, offset);
1114 ret = f2fs_do_collapse(inode, pg_start, pg_end);
1118 /* write out all moved pages, if possible */
1119 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1120 truncate_pagecache(inode, offset);
1122 new_size = i_size_read(inode) - len;
1123 truncate_pagecache(inode, new_size);
1125 ret = truncate_blocks(inode, new_size, true);
1127 f2fs_i_size_write(inode, new_size);
1132 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1135 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1136 pgoff_t index = start;
1137 unsigned int ofs_in_node = dn->ofs_in_node;
1141 for (; index < end; index++, dn->ofs_in_node++) {
1142 if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR)
1146 dn->ofs_in_node = ofs_in_node;
1147 ret = reserve_new_blocks(dn, count);
1151 dn->ofs_in_node = ofs_in_node;
1152 for (index = start; index < end; index++, dn->ofs_in_node++) {
1154 datablock_addr(dn->node_page, dn->ofs_in_node);
1156 * reserve_new_blocks will not guarantee entire block
1159 if (dn->data_blkaddr == NULL_ADDR) {
1163 if (dn->data_blkaddr != NEW_ADDR) {
1164 invalidate_blocks(sbi, dn->data_blkaddr);
1165 dn->data_blkaddr = NEW_ADDR;
1166 set_data_blkaddr(dn);
1170 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1175 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1178 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1179 struct address_space *mapping = inode->i_mapping;
1180 pgoff_t index, pg_start, pg_end;
1181 loff_t new_size = i_size_read(inode);
1182 loff_t off_start, off_end;
1185 ret = inode_newsize_ok(inode, (len + offset));
1189 ret = f2fs_convert_inline_inode(inode);
1193 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1197 truncate_pagecache_range(inode, offset, offset + len - 1);
1199 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1200 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1202 off_start = offset & (PAGE_SIZE - 1);
1203 off_end = (offset + len) & (PAGE_SIZE - 1);
1205 if (pg_start == pg_end) {
1206 ret = fill_zero(inode, pg_start, off_start,
1207 off_end - off_start);
1211 new_size = max_t(loff_t, new_size, offset + len);
1214 ret = fill_zero(inode, pg_start++, off_start,
1215 PAGE_SIZE - off_start);
1219 new_size = max_t(loff_t, new_size,
1220 (loff_t)pg_start << PAGE_SHIFT);
1223 for (index = pg_start; index < pg_end;) {
1224 struct dnode_of_data dn;
1225 unsigned int end_offset;
1230 set_new_dnode(&dn, inode, NULL, NULL, 0);
1231 ret = get_dnode_of_data(&dn, index, ALLOC_NODE);
1233 f2fs_unlock_op(sbi);
1237 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1238 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1240 ret = f2fs_do_zero_range(&dn, index, end);
1241 f2fs_put_dnode(&dn);
1242 f2fs_unlock_op(sbi);
1244 f2fs_balance_fs(sbi, dn.node_changed);
1250 new_size = max_t(loff_t, new_size,
1251 (loff_t)index << PAGE_SHIFT);
1255 ret = fill_zero(inode, pg_end, 0, off_end);
1259 new_size = max_t(loff_t, new_size, offset + len);
1264 if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size)
1265 f2fs_i_size_write(inode, new_size);
1270 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1272 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1273 pgoff_t nr, pg_start, pg_end, delta, idx;
1277 new_size = i_size_read(inode) + len;
1278 ret = inode_newsize_ok(inode, new_size);
1282 if (offset >= i_size_read(inode))
1285 /* insert range should be aligned to block size of f2fs. */
1286 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1289 ret = f2fs_convert_inline_inode(inode);
1293 f2fs_balance_fs(sbi, true);
1295 ret = truncate_blocks(inode, i_size_read(inode), true);
1299 /* write out all dirty pages from offset */
1300 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1304 truncate_pagecache(inode, offset);
1306 pg_start = offset >> PAGE_SHIFT;
1307 pg_end = (offset + len) >> PAGE_SHIFT;
1308 delta = pg_end - pg_start;
1309 idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1311 while (!ret && idx > pg_start) {
1312 nr = idx - pg_start;
1318 f2fs_drop_extent_tree(inode);
1320 ret = __exchange_data_block(inode, inode, idx,
1321 idx + delta, nr, false);
1322 f2fs_unlock_op(sbi);
1325 /* write out all moved pages, if possible */
1326 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1327 truncate_pagecache(inode, offset);
1330 f2fs_i_size_write(inode, new_size);
1334 static int expand_inode_data(struct inode *inode, loff_t offset,
1335 loff_t len, int mode)
1337 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1338 struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
1340 loff_t new_size = i_size_read(inode);
1344 err = inode_newsize_ok(inode, (len + offset));
1348 err = f2fs_convert_inline_inode(inode);
1352 f2fs_balance_fs(sbi, true);
1354 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1355 off_end = (offset + len) & (PAGE_SIZE - 1);
1357 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1358 map.m_len = pg_end - map.m_lblk;
1362 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1369 last_off = map.m_lblk + map.m_len - 1;
1371 /* update new size to the failed position */
1372 new_size = (last_off == pg_end) ? offset + len:
1373 (loff_t)(last_off + 1) << PAGE_SHIFT;
1375 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1378 if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size)
1379 f2fs_i_size_write(inode, new_size);
1384 static long f2fs_fallocate(struct file *file, int mode,
1385 loff_t offset, loff_t len)
1387 struct inode *inode = file_inode(file);
1390 /* f2fs only support ->fallocate for regular file */
1391 if (!S_ISREG(inode->i_mode))
1394 if (f2fs_encrypted_inode(inode) &&
1395 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1398 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1399 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1400 FALLOC_FL_INSERT_RANGE))
1405 if (mode & FALLOC_FL_PUNCH_HOLE) {
1406 if (offset >= inode->i_size)
1409 ret = punch_hole(inode, offset, len);
1410 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1411 ret = f2fs_collapse_range(inode, offset, len);
1412 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1413 ret = f2fs_zero_range(inode, offset, len, mode);
1414 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1415 ret = f2fs_insert_range(inode, offset, len);
1417 ret = expand_inode_data(inode, offset, len, mode);
1421 inode->i_mtime = inode->i_ctime = current_time(inode);
1422 f2fs_mark_inode_dirty_sync(inode, false);
1423 if (mode & FALLOC_FL_KEEP_SIZE)
1424 file_set_keep_isize(inode);
1425 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1429 inode_unlock(inode);
1431 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1435 static int f2fs_release_file(struct inode *inode, struct file *filp)
1438 * f2fs_relase_file is called at every close calls. So we should
1439 * not drop any inmemory pages by close called by other process.
1441 if (!(filp->f_mode & FMODE_WRITE) ||
1442 atomic_read(&inode->i_writecount) != 1)
1445 /* some remained atomic pages should discarded */
1446 if (f2fs_is_atomic_file(inode))
1447 drop_inmem_pages(inode);
1448 if (f2fs_is_volatile_file(inode)) {
1449 clear_inode_flag(inode, FI_VOLATILE_FILE);
1450 stat_dec_volatile_write(inode);
1451 set_inode_flag(inode, FI_DROP_CACHE);
1452 filemap_fdatawrite(inode->i_mapping);
1453 clear_inode_flag(inode, FI_DROP_CACHE);
1458 #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
1459 #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
1461 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
1465 else if (S_ISREG(mode))
1466 return flags & F2FS_REG_FLMASK;
1468 return flags & F2FS_OTHER_FLMASK;
1471 static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1473 struct inode *inode = file_inode(filp);
1474 struct f2fs_inode_info *fi = F2FS_I(inode);
1475 unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE;
1476 return put_user(flags, (int __user *)arg);
1479 static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1481 struct inode *inode = file_inode(filp);
1482 struct f2fs_inode_info *fi = F2FS_I(inode);
1484 unsigned int oldflags;
1487 if (!inode_owner_or_capable(inode))
1490 if (get_user(flags, (int __user *)arg))
1493 ret = mnt_want_write_file(filp);
1499 flags = f2fs_mask_flags(inode->i_mode, flags);
1501 oldflags = fi->i_flags;
1503 if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
1504 if (!capable(CAP_LINUX_IMMUTABLE)) {
1505 inode_unlock(inode);
1511 flags = flags & FS_FL_USER_MODIFIABLE;
1512 flags |= oldflags & ~FS_FL_USER_MODIFIABLE;
1513 fi->i_flags = flags;
1515 inode->i_ctime = current_time(inode);
1516 f2fs_set_inode_flags(inode);
1517 f2fs_mark_inode_dirty_sync(inode, false);
1519 inode_unlock(inode);
1521 mnt_drop_write_file(filp);
1525 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1527 struct inode *inode = file_inode(filp);
1529 return put_user(inode->i_generation, (int __user *)arg);
1532 static int f2fs_ioc_start_atomic_write(struct file *filp)
1534 struct inode *inode = file_inode(filp);
1537 if (!inode_owner_or_capable(inode))
1540 if (!S_ISREG(inode->i_mode))
1543 ret = mnt_want_write_file(filp);
1549 if (f2fs_is_atomic_file(inode))
1552 ret = f2fs_convert_inline_inode(inode);
1556 set_inode_flag(inode, FI_ATOMIC_FILE);
1557 set_inode_flag(inode, FI_HOT_DATA);
1558 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1560 if (!get_dirty_pages(inode))
1563 f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
1564 "Unexpected flush for atomic writes: ino=%lu, npages=%u",
1565 inode->i_ino, get_dirty_pages(inode));
1566 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
1568 clear_inode_flag(inode, FI_ATOMIC_FILE);
1573 stat_inc_atomic_write(inode);
1574 stat_update_max_atomic_write(inode);
1576 inode_unlock(inode);
1577 mnt_drop_write_file(filp);
1581 static int f2fs_ioc_commit_atomic_write(struct file *filp)
1583 struct inode *inode = file_inode(filp);
1586 if (!inode_owner_or_capable(inode))
1589 ret = mnt_want_write_file(filp);
1595 if (f2fs_is_volatile_file(inode))
1598 if (f2fs_is_atomic_file(inode)) {
1599 ret = commit_inmem_pages(inode);
1603 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
1605 clear_inode_flag(inode, FI_ATOMIC_FILE);
1606 stat_dec_atomic_write(inode);
1609 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
1612 inode_unlock(inode);
1613 mnt_drop_write_file(filp);
1617 static int f2fs_ioc_start_volatile_write(struct file *filp)
1619 struct inode *inode = file_inode(filp);
1622 if (!inode_owner_or_capable(inode))
1625 if (!S_ISREG(inode->i_mode))
1628 ret = mnt_want_write_file(filp);
1634 if (f2fs_is_volatile_file(inode))
1637 ret = f2fs_convert_inline_inode(inode);
1641 stat_inc_volatile_write(inode);
1642 stat_update_max_volatile_write(inode);
1644 set_inode_flag(inode, FI_VOLATILE_FILE);
1645 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1647 inode_unlock(inode);
1648 mnt_drop_write_file(filp);
1652 static int f2fs_ioc_release_volatile_write(struct file *filp)
1654 struct inode *inode = file_inode(filp);
1657 if (!inode_owner_or_capable(inode))
1660 ret = mnt_want_write_file(filp);
1666 if (!f2fs_is_volatile_file(inode))
1669 if (!f2fs_is_first_block_written(inode)) {
1670 ret = truncate_partial_data_page(inode, 0, true);
1674 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1676 inode_unlock(inode);
1677 mnt_drop_write_file(filp);
1681 static int f2fs_ioc_abort_volatile_write(struct file *filp)
1683 struct inode *inode = file_inode(filp);
1686 if (!inode_owner_or_capable(inode))
1689 ret = mnt_want_write_file(filp);
1695 if (f2fs_is_atomic_file(inode))
1696 drop_inmem_pages(inode);
1697 if (f2fs_is_volatile_file(inode)) {
1698 clear_inode_flag(inode, FI_VOLATILE_FILE);
1699 stat_dec_volatile_write(inode);
1700 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
1703 inode_unlock(inode);
1705 mnt_drop_write_file(filp);
1706 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1710 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1712 struct inode *inode = file_inode(filp);
1713 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1714 struct super_block *sb = sbi->sb;
1718 if (!capable(CAP_SYS_ADMIN))
1721 if (get_user(in, (__u32 __user *)arg))
1724 ret = mnt_want_write_file(filp);
1729 case F2FS_GOING_DOWN_FULLSYNC:
1730 sb = freeze_bdev(sb->s_bdev);
1731 if (sb && !IS_ERR(sb)) {
1732 f2fs_stop_checkpoint(sbi, false);
1733 thaw_bdev(sb->s_bdev, sb);
1736 case F2FS_GOING_DOWN_METASYNC:
1737 /* do checkpoint only */
1738 f2fs_sync_fs(sb, 1);
1739 f2fs_stop_checkpoint(sbi, false);
1741 case F2FS_GOING_DOWN_NOSYNC:
1742 f2fs_stop_checkpoint(sbi, false);
1744 case F2FS_GOING_DOWN_METAFLUSH:
1745 sync_meta_pages(sbi, META, LONG_MAX);
1746 f2fs_stop_checkpoint(sbi, false);
1752 f2fs_update_time(sbi, REQ_TIME);
1754 mnt_drop_write_file(filp);
1758 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1760 struct inode *inode = file_inode(filp);
1761 struct super_block *sb = inode->i_sb;
1762 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1763 struct fstrim_range range;
1766 if (!capable(CAP_SYS_ADMIN))
1769 if (!blk_queue_discard(q))
1772 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
1776 ret = mnt_want_write_file(filp);
1780 range.minlen = max((unsigned int)range.minlen,
1781 q->limits.discard_granularity);
1782 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
1783 mnt_drop_write_file(filp);
1787 if (copy_to_user((struct fstrim_range __user *)arg, &range,
1790 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1794 static bool uuid_is_nonzero(__u8 u[16])
1798 for (i = 0; i < 16; i++)
1804 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
1806 struct inode *inode = file_inode(filp);
1808 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1810 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
1813 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
1815 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
1818 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
1820 struct inode *inode = file_inode(filp);
1821 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1824 if (!f2fs_sb_has_crypto(inode->i_sb))
1827 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
1830 err = mnt_want_write_file(filp);
1834 /* update superblock with uuid */
1835 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
1837 err = f2fs_commit_super(sbi, false);
1840 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
1841 mnt_drop_write_file(filp);
1844 mnt_drop_write_file(filp);
1846 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
1852 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
1854 struct inode *inode = file_inode(filp);
1855 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1859 if (!capable(CAP_SYS_ADMIN))
1862 if (get_user(sync, (__u32 __user *)arg))
1865 if (f2fs_readonly(sbi->sb))
1868 ret = mnt_want_write_file(filp);
1873 if (!mutex_trylock(&sbi->gc_mutex)) {
1878 mutex_lock(&sbi->gc_mutex);
1881 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
1883 mnt_drop_write_file(filp);
1887 static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
1889 struct inode *inode = file_inode(filp);
1890 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1893 if (!capable(CAP_SYS_ADMIN))
1896 if (f2fs_readonly(sbi->sb))
1899 ret = mnt_want_write_file(filp);
1903 ret = f2fs_sync_fs(sbi->sb, 1);
1905 mnt_drop_write_file(filp);
1909 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
1911 struct f2fs_defragment *range)
1913 struct inode *inode = file_inode(filp);
1914 struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
1915 struct extent_info ei = {0,0,0};
1916 pgoff_t pg_start, pg_end;
1917 unsigned int blk_per_seg = sbi->blocks_per_seg;
1918 unsigned int total = 0, sec_num;
1919 block_t blk_end = 0;
1920 bool fragmented = false;
1923 /* if in-place-update policy is enabled, don't waste time here */
1924 if (need_inplace_update_policy(inode, NULL))
1927 pg_start = range->start >> PAGE_SHIFT;
1928 pg_end = (range->start + range->len) >> PAGE_SHIFT;
1930 f2fs_balance_fs(sbi, true);
1934 /* writeback all dirty pages in the range */
1935 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
1936 range->start + range->len - 1);
1941 * lookup mapping info in extent cache, skip defragmenting if physical
1942 * block addresses are continuous.
1944 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
1945 if (ei.fofs + ei.len >= pg_end)
1949 map.m_lblk = pg_start;
1952 * lookup mapping info in dnode page cache, skip defragmenting if all
1953 * physical block addresses are continuous even if there are hole(s)
1954 * in logical blocks.
1956 while (map.m_lblk < pg_end) {
1957 map.m_len = pg_end - map.m_lblk;
1958 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
1962 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
1967 if (blk_end && blk_end != map.m_pblk) {
1971 blk_end = map.m_pblk + map.m_len;
1973 map.m_lblk += map.m_len;
1979 map.m_lblk = pg_start;
1980 map.m_len = pg_end - pg_start;
1982 sec_num = (map.m_len + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
1985 * make sure there are enough free section for LFS allocation, this can
1986 * avoid defragment running in SSR mode when free section are allocated
1989 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
1994 while (map.m_lblk < pg_end) {
1999 map.m_len = pg_end - map.m_lblk;
2000 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
2004 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2009 set_inode_flag(inode, FI_DO_DEFRAG);
2012 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2015 page = get_lock_data_page(inode, idx, true);
2017 err = PTR_ERR(page);
2021 set_page_dirty(page);
2022 f2fs_put_page(page, 1);
2031 if (idx < pg_end && cnt < blk_per_seg)
2034 clear_inode_flag(inode, FI_DO_DEFRAG);
2036 err = filemap_fdatawrite(inode->i_mapping);
2041 clear_inode_flag(inode, FI_DO_DEFRAG);
2043 inode_unlock(inode);
2045 range->len = (u64)total << PAGE_SHIFT;
2049 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2051 struct inode *inode = file_inode(filp);
2052 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2053 struct f2fs_defragment range;
2056 if (!capable(CAP_SYS_ADMIN))
2059 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2062 if (f2fs_readonly(sbi->sb))
2065 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2069 /* verify alignment of offset & size */
2070 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2073 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2074 sbi->max_file_blocks))
2077 err = mnt_want_write_file(filp);
2081 err = f2fs_defragment_range(sbi, filp, &range);
2082 mnt_drop_write_file(filp);
2084 f2fs_update_time(sbi, REQ_TIME);
2088 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2095 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2096 struct file *file_out, loff_t pos_out, size_t len)
2098 struct inode *src = file_inode(file_in);
2099 struct inode *dst = file_inode(file_out);
2100 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2101 size_t olen = len, dst_max_i_size = 0;
2105 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2106 src->i_sb != dst->i_sb)
2109 if (unlikely(f2fs_readonly(src->i_sb)))
2112 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2115 if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
2119 if (pos_in == pos_out)
2121 if (pos_out > pos_in && pos_out < pos_in + len)
2127 if (!inode_trylock(dst)) {
2134 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2137 olen = len = src->i_size - pos_in;
2138 if (pos_in + len == src->i_size)
2139 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2145 dst_osize = dst->i_size;
2146 if (pos_out + olen > dst->i_size)
2147 dst_max_i_size = pos_out + olen;
2149 /* verify the end result is block aligned */
2150 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2151 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2152 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2155 ret = f2fs_convert_inline_inode(src);
2159 ret = f2fs_convert_inline_inode(dst);
2163 /* write out all dirty pages from offset */
2164 ret = filemap_write_and_wait_range(src->i_mapping,
2165 pos_in, pos_in + len);
2169 ret = filemap_write_and_wait_range(dst->i_mapping,
2170 pos_out, pos_out + len);
2174 f2fs_balance_fs(sbi, true);
2176 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2177 pos_out >> F2FS_BLKSIZE_BITS,
2178 len >> F2FS_BLKSIZE_BITS, false);
2182 f2fs_i_size_write(dst, dst_max_i_size);
2183 else if (dst_osize != dst->i_size)
2184 f2fs_i_size_write(dst, dst_osize);
2186 f2fs_unlock_op(sbi);
2195 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2197 struct f2fs_move_range range;
2201 if (!(filp->f_mode & FMODE_READ) ||
2202 !(filp->f_mode & FMODE_WRITE))
2205 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2209 dst = fdget(range.dst_fd);
2213 if (!(dst.file->f_mode & FMODE_WRITE)) {
2218 err = mnt_want_write_file(filp);
2222 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2223 range.pos_out, range.len);
2225 mnt_drop_write_file(filp);
2229 if (copy_to_user((struct f2fs_move_range __user *)arg,
2230 &range, sizeof(range)))
2237 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2239 struct inode *inode = file_inode(filp);
2240 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2241 struct sit_info *sm = SIT_I(sbi);
2242 unsigned int start_segno = 0, end_segno = 0;
2243 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2244 struct f2fs_flush_device range;
2247 if (!capable(CAP_SYS_ADMIN))
2250 if (f2fs_readonly(sbi->sb))
2253 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2257 if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num ||
2258 sbi->segs_per_sec != 1) {
2259 f2fs_msg(sbi->sb, KERN_WARNING,
2260 "Can't flush %u in %d for segs_per_sec %u != 1\n",
2261 range.dev_num, sbi->s_ndevs,
2266 ret = mnt_want_write_file(filp);
2270 if (range.dev_num != 0)
2271 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2272 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2274 start_segno = sm->last_victim[FLUSH_DEVICE];
2275 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2276 start_segno = dev_start_segno;
2277 end_segno = min(start_segno + range.segments, dev_end_segno);
2279 while (start_segno < end_segno) {
2280 if (!mutex_trylock(&sbi->gc_mutex)) {
2284 sm->last_victim[GC_CB] = end_segno + 1;
2285 sm->last_victim[GC_GREEDY] = end_segno + 1;
2286 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2287 ret = f2fs_gc(sbi, true, true, start_segno);
2295 mnt_drop_write_file(filp);
2300 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2303 case F2FS_IOC_GETFLAGS:
2304 return f2fs_ioc_getflags(filp, arg);
2305 case F2FS_IOC_SETFLAGS:
2306 return f2fs_ioc_setflags(filp, arg);
2307 case F2FS_IOC_GETVERSION:
2308 return f2fs_ioc_getversion(filp, arg);
2309 case F2FS_IOC_START_ATOMIC_WRITE:
2310 return f2fs_ioc_start_atomic_write(filp);
2311 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2312 return f2fs_ioc_commit_atomic_write(filp);
2313 case F2FS_IOC_START_VOLATILE_WRITE:
2314 return f2fs_ioc_start_volatile_write(filp);
2315 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2316 return f2fs_ioc_release_volatile_write(filp);
2317 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2318 return f2fs_ioc_abort_volatile_write(filp);
2319 case F2FS_IOC_SHUTDOWN:
2320 return f2fs_ioc_shutdown(filp, arg);
2322 return f2fs_ioc_fitrim(filp, arg);
2323 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2324 return f2fs_ioc_set_encryption_policy(filp, arg);
2325 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2326 return f2fs_ioc_get_encryption_policy(filp, arg);
2327 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2328 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
2329 case F2FS_IOC_GARBAGE_COLLECT:
2330 return f2fs_ioc_gc(filp, arg);
2331 case F2FS_IOC_WRITE_CHECKPOINT:
2332 return f2fs_ioc_write_checkpoint(filp, arg);
2333 case F2FS_IOC_DEFRAGMENT:
2334 return f2fs_ioc_defragment(filp, arg);
2335 case F2FS_IOC_MOVE_RANGE:
2336 return f2fs_ioc_move_range(filp, arg);
2337 case F2FS_IOC_FLUSH_DEVICE:
2338 return f2fs_ioc_flush_device(filp, arg);
2344 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
2346 struct file *file = iocb->ki_filp;
2347 struct inode *inode = file_inode(file);
2348 struct blk_plug plug;
2351 if (f2fs_encrypted_inode(inode) &&
2352 !fscrypt_has_encryption_key(inode) &&
2353 fscrypt_get_encryption_info(inode))
2357 ret = generic_write_checks(iocb, from);
2361 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
2362 set_inode_flag(inode, FI_NO_PREALLOC);
2364 err = f2fs_preallocate_blocks(iocb, from);
2366 inode_unlock(inode);
2369 blk_start_plug(&plug);
2370 ret = __generic_file_write_iter(iocb, from);
2371 blk_finish_plug(&plug);
2372 clear_inode_flag(inode, FI_NO_PREALLOC);
2374 inode_unlock(inode);
2377 ret = generic_write_sync(iocb, ret);
2381 #ifdef CONFIG_COMPAT
2382 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2385 case F2FS_IOC32_GETFLAGS:
2386 cmd = F2FS_IOC_GETFLAGS;
2388 case F2FS_IOC32_SETFLAGS:
2389 cmd = F2FS_IOC_SETFLAGS;
2391 case F2FS_IOC32_GETVERSION:
2392 cmd = F2FS_IOC_GETVERSION;
2394 case F2FS_IOC_START_ATOMIC_WRITE:
2395 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2396 case F2FS_IOC_START_VOLATILE_WRITE:
2397 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2398 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2399 case F2FS_IOC_SHUTDOWN:
2400 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2401 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2402 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2403 case F2FS_IOC_GARBAGE_COLLECT:
2404 case F2FS_IOC_WRITE_CHECKPOINT:
2405 case F2FS_IOC_DEFRAGMENT:
2406 case F2FS_IOC_MOVE_RANGE:
2407 case F2FS_IOC_FLUSH_DEVICE:
2410 return -ENOIOCTLCMD;
2412 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
2416 const struct file_operations f2fs_file_operations = {
2417 .llseek = f2fs_llseek,
2418 .read_iter = generic_file_read_iter,
2419 .write_iter = f2fs_file_write_iter,
2420 .open = f2fs_file_open,
2421 .release = f2fs_release_file,
2422 .mmap = f2fs_file_mmap,
2423 .fsync = f2fs_sync_file,
2424 .fallocate = f2fs_fallocate,
2425 .unlocked_ioctl = f2fs_ioctl,
2426 #ifdef CONFIG_COMPAT
2427 .compat_ioctl = f2fs_compat_ioctl,
2429 .splice_read = generic_file_splice_read,
2430 .splice_write = iter_file_splice_write,