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>
14 #include <trace/events/android_fs.h>
16 bool f2fs_may_inline_data(struct inode *inode)
18 if (f2fs_is_atomic_file(inode))
21 if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
24 if (i_size_read(inode) > MAX_INLINE_DATA(inode))
27 if (f2fs_post_read_required(inode))
33 bool f2fs_may_inline_dentry(struct inode *inode)
35 if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
38 if (!S_ISDIR(inode->i_mode))
44 void f2fs_do_read_inline_data(struct page *page, struct page *ipage)
46 struct inode *inode = page->mapping->host;
47 void *src_addr, *dst_addr;
49 if (PageUptodate(page))
52 f2fs_bug_on(F2FS_P_SB(page), page->index);
54 zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE);
56 /* Copy the whole inline data block */
57 src_addr = inline_data_addr(inode, ipage);
58 dst_addr = kmap_atomic(page);
59 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
60 flush_dcache_page(page);
61 kunmap_atomic(dst_addr);
62 if (!PageUptodate(page))
63 SetPageUptodate(page);
66 void f2fs_truncate_inline_inode(struct inode *inode,
67 struct page *ipage, u64 from)
71 if (from >= MAX_INLINE_DATA(inode))
74 addr = inline_data_addr(inode, ipage);
76 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
77 memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
78 set_page_dirty(ipage);
81 clear_inode_flag(inode, FI_DATA_EXIST);
84 int f2fs_read_inline_data(struct inode *inode, struct page *page)
88 if (trace_android_fs_dataread_start_enabled()) {
89 char *path, pathbuf[MAX_TRACE_PATHBUF_LEN];
91 path = android_fstrace_get_pathname(pathbuf,
92 MAX_TRACE_PATHBUF_LEN,
94 trace_android_fs_dataread_start(inode, page_offset(page),
95 PAGE_SIZE, current->pid,
99 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
101 trace_android_fs_dataread_end(inode, page_offset(page),
104 return PTR_ERR(ipage);
107 if (!f2fs_has_inline_data(inode)) {
108 f2fs_put_page(ipage, 1);
109 trace_android_fs_dataread_end(inode, page_offset(page),
115 zero_user_segment(page, 0, PAGE_SIZE);
117 f2fs_do_read_inline_data(page, ipage);
119 if (!PageUptodate(page))
120 SetPageUptodate(page);
121 f2fs_put_page(ipage, 1);
122 trace_android_fs_dataread_end(inode, page_offset(page),
128 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
130 struct f2fs_io_info fio = {
131 .sbi = F2FS_I_SB(dn->inode),
132 .ino = dn->inode->i_ino,
135 .op_flags = REQ_SYNC | REQ_NOIDLE | REQ_PRIO,
137 .encrypted_page = NULL,
138 .io_type = FS_DATA_IO,
143 if (!f2fs_exist_data(dn->inode))
146 err = f2fs_reserve_block(dn, 0);
150 err = f2fs_get_node_info(fio.sbi, dn->nid, &ni);
152 f2fs_truncate_data_blocks_range(dn, 1);
157 fio.version = ni.version;
159 if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
161 set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
162 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
163 __func__, dn->inode->i_ino, dn->data_blkaddr);
164 return -EFSCORRUPTED;
167 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
169 f2fs_do_read_inline_data(page, dn->inode_page);
170 set_page_dirty(page);
172 /* clear dirty state */
173 dirty = clear_page_dirty_for_io(page);
175 /* write data page to try to make data consistent */
176 set_page_writeback(page);
177 ClearPageError(page);
178 fio.old_blkaddr = dn->data_blkaddr;
179 set_inode_flag(dn->inode, FI_HOT_DATA);
180 f2fs_outplace_write_data(dn, &fio);
181 f2fs_wait_on_page_writeback(page, DATA, true, true);
183 inode_dec_dirty_pages(dn->inode);
184 f2fs_remove_dirty_inode(dn->inode);
187 /* this converted inline_data should be recovered. */
188 set_inode_flag(dn->inode, FI_APPEND_WRITE);
190 /* clear inline data and flag after data writeback */
191 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
192 clear_inline_node(dn->inode_page);
194 stat_dec_inline_inode(dn->inode);
195 clear_inode_flag(dn->inode, FI_INLINE_DATA);
200 int f2fs_convert_inline_inode(struct inode *inode)
202 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
203 struct dnode_of_data dn;
204 struct page *ipage, *page;
207 if (!f2fs_has_inline_data(inode))
210 page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
216 ipage = f2fs_get_node_page(sbi, inode->i_ino);
218 err = PTR_ERR(ipage);
222 set_new_dnode(&dn, inode, ipage, ipage, 0);
224 if (f2fs_has_inline_data(inode))
225 err = f2fs_convert_inline_page(&dn, page);
231 f2fs_put_page(page, 1);
233 f2fs_balance_fs(sbi, dn.node_changed);
238 int f2fs_write_inline_data(struct inode *inode, struct page *page)
240 void *src_addr, *dst_addr;
241 struct dnode_of_data dn;
244 set_new_dnode(&dn, inode, NULL, NULL, 0);
245 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
249 if (!f2fs_has_inline_data(inode)) {
254 f2fs_bug_on(F2FS_I_SB(inode), page->index);
256 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true);
257 src_addr = kmap_atomic(page);
258 dst_addr = inline_data_addr(inode, dn.inode_page);
259 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
260 kunmap_atomic(src_addr);
261 set_page_dirty(dn.inode_page);
263 f2fs_clear_radix_tree_dirty_tag(page);
265 set_inode_flag(inode, FI_APPEND_WRITE);
266 set_inode_flag(inode, FI_DATA_EXIST);
268 clear_inline_node(dn.inode_page);
273 bool f2fs_recover_inline_data(struct inode *inode, struct page *npage)
275 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
276 struct f2fs_inode *ri = NULL;
277 void *src_addr, *dst_addr;
281 * The inline_data recovery policy is as follows.
282 * [prev.] [next] of inline_data flag
283 * o o -> recover inline_data
284 * o x -> remove inline_data, and then recover data blocks
285 * x o -> remove inline_data, and then recover inline_data
286 * x x -> recover data blocks
289 ri = F2FS_INODE(npage);
291 if (f2fs_has_inline_data(inode) &&
292 ri && (ri->i_inline & F2FS_INLINE_DATA)) {
294 ipage = f2fs_get_node_page(sbi, inode->i_ino);
295 f2fs_bug_on(sbi, IS_ERR(ipage));
297 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
299 src_addr = inline_data_addr(inode, npage);
300 dst_addr = inline_data_addr(inode, ipage);
301 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
303 set_inode_flag(inode, FI_INLINE_DATA);
304 set_inode_flag(inode, FI_DATA_EXIST);
306 set_page_dirty(ipage);
307 f2fs_put_page(ipage, 1);
311 if (f2fs_has_inline_data(inode)) {
312 ipage = f2fs_get_node_page(sbi, inode->i_ino);
313 f2fs_bug_on(sbi, IS_ERR(ipage));
314 f2fs_truncate_inline_inode(inode, ipage, 0);
315 clear_inode_flag(inode, FI_INLINE_DATA);
316 f2fs_put_page(ipage, 1);
317 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
318 if (f2fs_truncate_blocks(inode, 0, false))
325 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
326 struct fscrypt_name *fname, struct page **res_page)
328 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
329 struct qstr name = FSTR_TO_QSTR(&fname->disk_name);
330 struct f2fs_dir_entry *de;
331 struct f2fs_dentry_ptr d;
334 f2fs_hash_t namehash;
336 ipage = f2fs_get_node_page(sbi, dir->i_ino);
342 namehash = f2fs_dentry_hash(&name, fname);
344 inline_dentry = inline_data_addr(dir, ipage);
346 make_dentry_ptr_inline(dir, &d, inline_dentry);
347 de = f2fs_find_target_dentry(fname, namehash, NULL, &d);
352 f2fs_put_page(ipage, 0);
357 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
360 struct f2fs_dentry_ptr d;
363 inline_dentry = inline_data_addr(inode, ipage);
365 make_dentry_ptr_inline(inode, &d, inline_dentry);
366 f2fs_do_make_empty_dir(inode, parent, &d);
368 set_page_dirty(ipage);
370 /* update i_size to MAX_INLINE_DATA */
371 if (i_size_read(inode) < MAX_INLINE_DATA(inode))
372 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
377 * NOTE: ipage is grabbed by caller, but if any error occurs, we should
378 * release ipage in this function.
380 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
384 struct dnode_of_data dn;
385 struct f2fs_dentry_block *dentry_blk;
386 struct f2fs_dentry_ptr src, dst;
389 page = f2fs_grab_cache_page(dir->i_mapping, 0, false);
391 f2fs_put_page(ipage, 1);
395 set_new_dnode(&dn, dir, ipage, NULL, 0);
396 err = f2fs_reserve_block(&dn, 0);
400 if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
402 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
403 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
404 __func__, dir->i_ino, dn.data_blkaddr);
409 f2fs_wait_on_page_writeback(page, DATA, true, true);
411 dentry_blk = page_address(page);
413 make_dentry_ptr_inline(dir, &src, inline_dentry);
414 make_dentry_ptr_block(dir, &dst, dentry_blk);
416 /* copy data from inline dentry block to new dentry block */
417 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
418 memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap);
420 * we do not need to zero out remainder part of dentry and filename
421 * field, since we have used bitmap for marking the usage status of
422 * them, besides, we can also ignore copying/zeroing reserved space
423 * of dentry block, because them haven't been used so far.
425 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
426 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
428 if (!PageUptodate(page))
429 SetPageUptodate(page);
430 set_page_dirty(page);
432 /* clear inline dir and flag after data writeback */
433 f2fs_truncate_inline_inode(dir, ipage, 0);
435 stat_dec_inline_dir(dir);
436 clear_inode_flag(dir, FI_INLINE_DENTRY);
439 * should retrieve reserved space which was used to keep
440 * inline_dentry's structure for backward compatibility.
442 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
443 !f2fs_has_inline_xattr(dir))
444 F2FS_I(dir)->i_inline_xattr_size = 0;
446 f2fs_i_depth_write(dir, 1);
447 if (i_size_read(dir) < PAGE_SIZE)
448 f2fs_i_size_write(dir, PAGE_SIZE);
450 f2fs_put_page(page, 1);
454 static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
456 struct f2fs_dentry_ptr d;
457 unsigned long bit_pos = 0;
460 make_dentry_ptr_inline(dir, &d, inline_dentry);
462 while (bit_pos < d.max) {
463 struct f2fs_dir_entry *de;
464 struct qstr new_name;
468 if (!test_bit_le(bit_pos, d.bitmap)) {
473 de = &d.dentry[bit_pos];
475 if (unlikely(!de->name_len)) {
480 new_name.name = d.filename[bit_pos];
481 new_name.len = le16_to_cpu(de->name_len);
483 ino = le32_to_cpu(de->ino);
484 fake_mode = f2fs_get_de_type(de) << S_SHIFT;
486 err = f2fs_add_regular_entry(dir, &new_name, NULL, NULL,
489 goto punch_dentry_pages;
491 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
495 truncate_inode_pages(&dir->i_data, 0);
496 f2fs_truncate_blocks(dir, 0, false);
497 f2fs_remove_dirty_inode(dir);
501 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
507 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
508 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
509 if (!backup_dentry) {
510 f2fs_put_page(ipage, 1);
514 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
515 f2fs_truncate_inline_inode(dir, ipage, 0);
519 err = f2fs_add_inline_entries(dir, backup_dentry);
525 stat_dec_inline_dir(dir);
526 clear_inode_flag(dir, FI_INLINE_DENTRY);
529 * should retrieve reserved space which was used to keep
530 * inline_dentry's structure for backward compatibility.
532 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
533 !f2fs_has_inline_xattr(dir))
534 F2FS_I(dir)->i_inline_xattr_size = 0;
536 kvfree(backup_dentry);
540 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
541 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
542 f2fs_i_depth_write(dir, 0);
543 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
544 set_page_dirty(ipage);
545 f2fs_put_page(ipage, 1);
547 kvfree(backup_dentry);
551 static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage,
554 if (!F2FS_I(dir)->i_dir_level)
555 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
557 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
560 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
561 const struct qstr *orig_name,
562 struct inode *inode, nid_t ino, umode_t mode)
564 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
566 unsigned int bit_pos;
567 f2fs_hash_t name_hash;
568 void *inline_dentry = NULL;
569 struct f2fs_dentry_ptr d;
570 int slots = GET_DENTRY_SLOTS(new_name->len);
571 struct page *page = NULL;
574 ipage = f2fs_get_node_page(sbi, dir->i_ino);
576 return PTR_ERR(ipage);
578 inline_dentry = inline_data_addr(dir, ipage);
579 make_dentry_ptr_inline(dir, &d, inline_dentry);
581 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
582 if (bit_pos >= d.max) {
583 err = f2fs_convert_inline_dir(dir, ipage, inline_dentry);
591 down_write(&F2FS_I(inode)->i_sem);
592 page = f2fs_init_inode_metadata(inode, dir, new_name,
600 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
602 name_hash = f2fs_dentry_hash(new_name, NULL);
603 f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos);
605 set_page_dirty(ipage);
607 /* we don't need to mark_inode_dirty now */
609 f2fs_i_pino_write(inode, dir->i_ino);
610 f2fs_put_page(page, 1);
613 f2fs_update_parent_metadata(dir, inode, 0);
616 up_write(&F2FS_I(inode)->i_sem);
618 f2fs_put_page(ipage, 1);
622 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
623 struct inode *dir, struct inode *inode)
625 struct f2fs_dentry_ptr d;
627 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
628 unsigned int bit_pos;
632 f2fs_wait_on_page_writeback(page, NODE, true, true);
634 inline_dentry = inline_data_addr(dir, page);
635 make_dentry_ptr_inline(dir, &d, inline_dentry);
637 bit_pos = dentry - d.dentry;
638 for (i = 0; i < slots; i++)
639 __clear_bit_le(bit_pos + i, d.bitmap);
641 set_page_dirty(page);
642 f2fs_put_page(page, 1);
644 dir->i_ctime = dir->i_mtime = current_time(dir);
645 f2fs_mark_inode_dirty_sync(dir, false);
648 f2fs_drop_nlink(dir, inode);
651 bool f2fs_empty_inline_dir(struct inode *dir)
653 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
655 unsigned int bit_pos = 2;
657 struct f2fs_dentry_ptr d;
659 ipage = f2fs_get_node_page(sbi, dir->i_ino);
663 inline_dentry = inline_data_addr(dir, ipage);
664 make_dentry_ptr_inline(dir, &d, inline_dentry);
666 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
668 f2fs_put_page(ipage, 1);
676 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
677 struct fscrypt_str *fstr)
679 struct inode *inode = file_inode(file);
680 struct page *ipage = NULL;
681 struct f2fs_dentry_ptr d;
682 void *inline_dentry = NULL;
685 make_dentry_ptr_inline(inode, &d, inline_dentry);
687 if (ctx->pos == d.max)
690 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
692 return PTR_ERR(ipage);
695 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
696 * ipage without page's lock held.
700 inline_dentry = inline_data_addr(inode, ipage);
702 make_dentry_ptr_inline(inode, &d, inline_dentry);
704 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
708 f2fs_put_page(ipage, 0);
709 return err < 0 ? err : 0;
712 int f2fs_inline_data_fiemap(struct inode *inode,
713 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
715 __u64 byteaddr, ilen;
716 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
722 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
724 return PTR_ERR(ipage);
726 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
727 !f2fs_has_inline_data(inode)) {
732 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
737 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
740 if (start + len < ilen)
744 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
748 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
749 byteaddr += (char *)inline_data_addr(inode, ipage) -
750 (char *)F2FS_INODE(ipage);
751 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
753 f2fs_put_page(ipage, 1);