1 // SPDX-License-Identifier: GPL-2.0
4 * Copyright (c) 2013, Intel Corporation
5 * Authors: Huajun Li <huajun.li@intel.com>
6 * Haicheng Li <haicheng.li@intel.com>
10 #include <linux/f2fs_fs.h>
11 #include <linux/fiemap.h>
15 #include <trace/events/f2fs.h>
17 static bool support_inline_data(struct inode *inode)
19 if (f2fs_is_atomic_file(inode))
21 if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
23 if (i_size_read(inode) > MAX_INLINE_DATA(inode))
28 bool f2fs_may_inline_data(struct inode *inode)
30 if (!support_inline_data(inode))
33 return !f2fs_post_read_required(inode);
36 bool f2fs_sanity_check_inline_data(struct inode *inode)
38 if (!f2fs_has_inline_data(inode))
41 if (!support_inline_data(inode))
45 * used by sanity_check_inode(), when disk layout fields has not
46 * been synchronized to inmem fields.
48 return (S_ISREG(inode->i_mode) &&
49 (file_is_encrypt(inode) || file_is_verity(inode) ||
50 (F2FS_I(inode)->i_flags & F2FS_COMPR_FL)));
53 bool f2fs_may_inline_dentry(struct inode *inode)
55 if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
58 if (!S_ISDIR(inode->i_mode))
64 void f2fs_do_read_inline_data(struct page *page, struct page *ipage)
66 struct inode *inode = page->mapping->host;
68 if (PageUptodate(page))
71 f2fs_bug_on(F2FS_P_SB(page), page->index);
73 zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE);
75 /* Copy the whole inline data block */
76 memcpy_to_page(page, 0, inline_data_addr(inode, ipage),
77 MAX_INLINE_DATA(inode));
78 if (!PageUptodate(page))
79 SetPageUptodate(page);
82 void f2fs_truncate_inline_inode(struct inode *inode,
83 struct page *ipage, u64 from)
87 if (from >= MAX_INLINE_DATA(inode))
90 addr = inline_data_addr(inode, ipage);
92 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
93 memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
94 set_page_dirty(ipage);
97 clear_inode_flag(inode, FI_DATA_EXIST);
100 int f2fs_read_inline_data(struct inode *inode, struct page *page)
104 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
107 return PTR_ERR(ipage);
110 if (!f2fs_has_inline_data(inode)) {
111 f2fs_put_page(ipage, 1);
116 zero_user_segment(page, 0, PAGE_SIZE);
118 f2fs_do_read_inline_data(page, ipage);
120 if (!PageUptodate(page))
121 SetPageUptodate(page);
122 f2fs_put_page(ipage, 1);
127 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
129 struct f2fs_io_info fio = {
130 .sbi = F2FS_I_SB(dn->inode),
131 .ino = dn->inode->i_ino,
134 .op_flags = REQ_SYNC | REQ_PRIO,
136 .encrypted_page = NULL,
137 .io_type = FS_DATA_IO,
142 if (!f2fs_exist_data(dn->inode))
145 err = f2fs_reserve_block(dn, 0);
149 err = f2fs_get_node_info(fio.sbi, dn->nid, &ni);
151 f2fs_truncate_data_blocks_range(dn, 1);
156 fio.version = ni.version;
158 if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
160 set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
161 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
162 __func__, dn->inode->i_ino, dn->data_blkaddr);
163 return -EFSCORRUPTED;
166 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
168 f2fs_do_read_inline_data(page, dn->inode_page);
169 set_page_dirty(page);
171 /* clear dirty state */
172 dirty = clear_page_dirty_for_io(page);
174 /* write data page to try to make data consistent */
175 set_page_writeback(page);
176 ClearPageError(page);
177 fio.old_blkaddr = dn->data_blkaddr;
178 set_inode_flag(dn->inode, FI_HOT_DATA);
179 f2fs_outplace_write_data(dn, &fio);
180 f2fs_wait_on_page_writeback(page, DATA, true, true);
182 inode_dec_dirty_pages(dn->inode);
183 f2fs_remove_dirty_inode(dn->inode);
186 /* this converted inline_data should be recovered. */
187 set_inode_flag(dn->inode, FI_APPEND_WRITE);
189 /* clear inline data and flag after data writeback */
190 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
191 clear_inline_node(dn->inode_page);
193 stat_dec_inline_inode(dn->inode);
194 clear_inode_flag(dn->inode, FI_INLINE_DATA);
199 int f2fs_convert_inline_inode(struct inode *inode)
201 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
202 struct dnode_of_data dn;
203 struct page *ipage, *page;
206 if (!f2fs_has_inline_data(inode))
209 err = dquot_initialize(inode);
213 page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
219 ipage = f2fs_get_node_page(sbi, inode->i_ino);
221 err = PTR_ERR(ipage);
225 set_new_dnode(&dn, inode, ipage, ipage, 0);
227 if (f2fs_has_inline_data(inode))
228 err = f2fs_convert_inline_page(&dn, page);
234 f2fs_put_page(page, 1);
237 f2fs_balance_fs(sbi, dn.node_changed);
242 int f2fs_write_inline_data(struct inode *inode, struct page *page)
244 struct dnode_of_data dn;
247 set_new_dnode(&dn, inode, NULL, NULL, 0);
248 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
252 if (!f2fs_has_inline_data(inode)) {
257 f2fs_bug_on(F2FS_I_SB(inode), page->index);
259 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true);
260 memcpy_from_page(inline_data_addr(inode, dn.inode_page),
261 page, 0, MAX_INLINE_DATA(inode));
262 set_page_dirty(dn.inode_page);
264 f2fs_clear_page_cache_dirty_tag(page);
266 set_inode_flag(inode, FI_APPEND_WRITE);
267 set_inode_flag(inode, FI_DATA_EXIST);
269 clear_inline_node(dn.inode_page);
274 int f2fs_recover_inline_data(struct inode *inode, struct page *npage)
276 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
277 struct f2fs_inode *ri = NULL;
278 void *src_addr, *dst_addr;
282 * The inline_data recovery policy is as follows.
283 * [prev.] [next] of inline_data flag
284 * o o -> recover inline_data
285 * o x -> remove inline_data, and then recover data blocks
286 * x o -> remove inline_data, and then recover inline_data
287 * x x -> recover data blocks
290 ri = F2FS_INODE(npage);
292 if (f2fs_has_inline_data(inode) &&
293 ri && (ri->i_inline & F2FS_INLINE_DATA)) {
295 ipage = f2fs_get_node_page(sbi, inode->i_ino);
297 return PTR_ERR(ipage);
299 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
301 src_addr = inline_data_addr(inode, npage);
302 dst_addr = inline_data_addr(inode, ipage);
303 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
305 set_inode_flag(inode, FI_INLINE_DATA);
306 set_inode_flag(inode, FI_DATA_EXIST);
308 set_page_dirty(ipage);
309 f2fs_put_page(ipage, 1);
313 if (f2fs_has_inline_data(inode)) {
314 ipage = f2fs_get_node_page(sbi, inode->i_ino);
316 return PTR_ERR(ipage);
317 f2fs_truncate_inline_inode(inode, ipage, 0);
318 clear_inode_flag(inode, FI_INLINE_DATA);
319 f2fs_put_page(ipage, 1);
320 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
323 ret = f2fs_truncate_blocks(inode, 0, false);
331 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
332 const struct f2fs_filename *fname,
333 struct page **res_page)
335 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
336 struct f2fs_dir_entry *de;
337 struct f2fs_dentry_ptr d;
341 ipage = f2fs_get_node_page(sbi, dir->i_ino);
347 inline_dentry = inline_data_addr(dir, ipage);
349 make_dentry_ptr_inline(dir, &d, inline_dentry);
350 de = f2fs_find_target_dentry(&d, fname, NULL);
355 f2fs_put_page(ipage, 0);
360 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
363 struct f2fs_dentry_ptr d;
366 inline_dentry = inline_data_addr(inode, ipage);
368 make_dentry_ptr_inline(inode, &d, inline_dentry);
369 f2fs_do_make_empty_dir(inode, parent, &d);
371 set_page_dirty(ipage);
373 /* update i_size to MAX_INLINE_DATA */
374 if (i_size_read(inode) < MAX_INLINE_DATA(inode))
375 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
380 * NOTE: ipage is grabbed by caller, but if any error occurs, we should
381 * release ipage in this function.
383 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
387 struct dnode_of_data dn;
388 struct f2fs_dentry_block *dentry_blk;
389 struct f2fs_dentry_ptr src, dst;
392 page = f2fs_grab_cache_page(dir->i_mapping, 0, true);
394 f2fs_put_page(ipage, 1);
398 set_new_dnode(&dn, dir, ipage, NULL, 0);
399 err = f2fs_reserve_block(&dn, 0);
403 if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
405 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
406 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
407 __func__, dir->i_ino, dn.data_blkaddr);
412 f2fs_wait_on_page_writeback(page, DATA, true, true);
414 dentry_blk = page_address(page);
417 * Start by zeroing the full block, to ensure that all unused space is
418 * zeroed and no uninitialized memory is leaked to disk.
420 memset(dentry_blk, 0, F2FS_BLKSIZE);
422 make_dentry_ptr_inline(dir, &src, inline_dentry);
423 make_dentry_ptr_block(dir, &dst, dentry_blk);
425 /* copy data from inline dentry block to new dentry block */
426 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
427 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
428 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
430 if (!PageUptodate(page))
431 SetPageUptodate(page);
432 set_page_dirty(page);
434 /* clear inline dir and flag after data writeback */
435 f2fs_truncate_inline_inode(dir, ipage, 0);
437 stat_dec_inline_dir(dir);
438 clear_inode_flag(dir, FI_INLINE_DENTRY);
441 * should retrieve reserved space which was used to keep
442 * inline_dentry's structure for backward compatibility.
444 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
445 !f2fs_has_inline_xattr(dir))
446 F2FS_I(dir)->i_inline_xattr_size = 0;
448 f2fs_i_depth_write(dir, 1);
449 if (i_size_read(dir) < PAGE_SIZE)
450 f2fs_i_size_write(dir, PAGE_SIZE);
452 f2fs_put_page(page, 1);
456 static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
458 struct f2fs_dentry_ptr d;
459 unsigned long bit_pos = 0;
462 make_dentry_ptr_inline(dir, &d, inline_dentry);
464 while (bit_pos < d.max) {
465 struct f2fs_dir_entry *de;
466 struct f2fs_filename fname;
470 if (!test_bit_le(bit_pos, d.bitmap)) {
475 de = &d.dentry[bit_pos];
477 if (unlikely(!de->name_len)) {
483 * We only need the disk_name and hash to move the dentry.
484 * We don't need the original or casefolded filenames.
486 memset(&fname, 0, sizeof(fname));
487 fname.disk_name.name = d.filename[bit_pos];
488 fname.disk_name.len = le16_to_cpu(de->name_len);
489 fname.hash = de->hash_code;
491 ino = le32_to_cpu(de->ino);
492 fake_mode = f2fs_get_de_type(de) << S_SHIFT;
494 err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode);
496 goto punch_dentry_pages;
498 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
502 truncate_inode_pages(&dir->i_data, 0);
503 f2fs_truncate_blocks(dir, 0, false);
504 f2fs_remove_dirty_inode(dir);
508 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
514 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
515 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
516 if (!backup_dentry) {
517 f2fs_put_page(ipage, 1);
521 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
522 f2fs_truncate_inline_inode(dir, ipage, 0);
526 err = f2fs_add_inline_entries(dir, backup_dentry);
532 stat_dec_inline_dir(dir);
533 clear_inode_flag(dir, FI_INLINE_DENTRY);
536 * should retrieve reserved space which was used to keep
537 * inline_dentry's structure for backward compatibility.
539 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
540 !f2fs_has_inline_xattr(dir))
541 F2FS_I(dir)->i_inline_xattr_size = 0;
543 kfree(backup_dentry);
547 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
548 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
549 f2fs_i_depth_write(dir, 0);
550 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
551 set_page_dirty(ipage);
552 f2fs_put_page(ipage, 1);
554 kfree(backup_dentry);
558 static int do_convert_inline_dir(struct inode *dir, struct page *ipage,
561 if (!F2FS_I(dir)->i_dir_level)
562 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
564 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
567 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry)
569 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
571 struct f2fs_filename fname;
572 void *inline_dentry = NULL;
575 if (!f2fs_has_inline_dentry(dir))
580 err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname);
584 ipage = f2fs_get_node_page(sbi, dir->i_ino);
586 err = PTR_ERR(ipage);
590 if (f2fs_has_enough_room(dir, ipage, &fname)) {
591 f2fs_put_page(ipage, 1);
595 inline_dentry = inline_data_addr(dir, ipage);
597 err = do_convert_inline_dir(dir, ipage, inline_dentry);
599 f2fs_put_page(ipage, 1);
601 f2fs_free_filename(&fname);
607 int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
608 struct inode *inode, nid_t ino, umode_t mode)
610 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
612 unsigned int bit_pos;
613 void *inline_dentry = NULL;
614 struct f2fs_dentry_ptr d;
615 int slots = GET_DENTRY_SLOTS(fname->disk_name.len);
616 struct page *page = NULL;
619 ipage = f2fs_get_node_page(sbi, dir->i_ino);
621 return PTR_ERR(ipage);
623 inline_dentry = inline_data_addr(dir, ipage);
624 make_dentry_ptr_inline(dir, &d, inline_dentry);
626 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
627 if (bit_pos >= d.max) {
628 err = do_convert_inline_dir(dir, ipage, inline_dentry);
636 down_write(&F2FS_I(inode)->i_sem);
637 page = f2fs_init_inode_metadata(inode, dir, fname, ipage);
644 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
646 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash,
649 set_page_dirty(ipage);
651 /* we don't need to mark_inode_dirty now */
653 f2fs_i_pino_write(inode, dir->i_ino);
655 /* synchronize inode page's data from inode cache */
656 if (is_inode_flag_set(inode, FI_NEW_INODE))
657 f2fs_update_inode(inode, page);
659 f2fs_put_page(page, 1);
662 f2fs_update_parent_metadata(dir, inode, 0);
665 up_write(&F2FS_I(inode)->i_sem);
667 f2fs_put_page(ipage, 1);
671 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
672 struct inode *dir, struct inode *inode)
674 struct f2fs_dentry_ptr d;
676 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
677 unsigned int bit_pos;
681 f2fs_wait_on_page_writeback(page, NODE, true, true);
683 inline_dentry = inline_data_addr(dir, page);
684 make_dentry_ptr_inline(dir, &d, inline_dentry);
686 bit_pos = dentry - d.dentry;
687 for (i = 0; i < slots; i++)
688 __clear_bit_le(bit_pos + i, d.bitmap);
690 set_page_dirty(page);
691 f2fs_put_page(page, 1);
693 dir->i_ctime = dir->i_mtime = current_time(dir);
694 f2fs_mark_inode_dirty_sync(dir, false);
697 f2fs_drop_nlink(dir, inode);
700 bool f2fs_empty_inline_dir(struct inode *dir)
702 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
704 unsigned int bit_pos = 2;
706 struct f2fs_dentry_ptr d;
708 ipage = f2fs_get_node_page(sbi, dir->i_ino);
712 inline_dentry = inline_data_addr(dir, ipage);
713 make_dentry_ptr_inline(dir, &d, inline_dentry);
715 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
717 f2fs_put_page(ipage, 1);
725 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
726 struct fscrypt_str *fstr)
728 struct inode *inode = file_inode(file);
729 struct page *ipage = NULL;
730 struct f2fs_dentry_ptr d;
731 void *inline_dentry = NULL;
734 make_dentry_ptr_inline(inode, &d, inline_dentry);
736 if (ctx->pos == d.max)
739 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
741 return PTR_ERR(ipage);
744 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
745 * ipage without page's lock held.
749 inline_dentry = inline_data_addr(inode, ipage);
751 make_dentry_ptr_inline(inode, &d, inline_dentry);
753 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
757 f2fs_put_page(ipage, 0);
758 return err < 0 ? err : 0;
761 int f2fs_inline_data_fiemap(struct inode *inode,
762 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
764 __u64 byteaddr, ilen;
765 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
771 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
773 return PTR_ERR(ipage);
775 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
776 !f2fs_has_inline_data(inode)) {
781 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
786 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
789 if (start + len < ilen)
793 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
797 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
798 byteaddr += (char *)inline_data_addr(inode, ipage) -
799 (char *)F2FS_INODE(ipage);
800 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
801 trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err);
803 f2fs_put_page(ipage, 1);