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);
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_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);
156 fio.version = ni.version;
158 if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
160 set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
161 f2fs_msg(fio.sbi->sb, KERN_WARNING,
162 "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, "
164 __func__, dn->inode->i_ino, dn->data_blkaddr);
168 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
170 f2fs_do_read_inline_data(page, dn->inode_page);
171 set_page_dirty(page);
173 /* clear dirty state */
174 dirty = clear_page_dirty_for_io(page);
176 /* write data page to try to make data consistent */
177 set_page_writeback(page);
178 ClearPageError(page);
179 fio.old_blkaddr = dn->data_blkaddr;
180 set_inode_flag(dn->inode, FI_HOT_DATA);
181 f2fs_outplace_write_data(dn, &fio);
182 f2fs_wait_on_page_writeback(page, DATA, true);
184 inode_dec_dirty_pages(dn->inode);
185 f2fs_remove_dirty_inode(dn->inode);
188 /* this converted inline_data should be recovered. */
189 set_inode_flag(dn->inode, FI_APPEND_WRITE);
191 /* clear inline data and flag after data writeback */
192 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
193 clear_inline_node(dn->inode_page);
195 stat_dec_inline_inode(dn->inode);
196 clear_inode_flag(dn->inode, FI_INLINE_DATA);
201 int f2fs_convert_inline_inode(struct inode *inode)
203 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
204 struct dnode_of_data dn;
205 struct page *ipage, *page;
208 if (!f2fs_has_inline_data(inode))
211 page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
217 ipage = f2fs_get_node_page(sbi, inode->i_ino);
219 err = PTR_ERR(ipage);
223 set_new_dnode(&dn, inode, ipage, ipage, 0);
225 if (f2fs_has_inline_data(inode))
226 err = f2fs_convert_inline_page(&dn, page);
232 f2fs_put_page(page, 1);
234 f2fs_balance_fs(sbi, dn.node_changed);
239 int f2fs_write_inline_data(struct inode *inode, struct page *page)
241 void *src_addr, *dst_addr;
242 struct dnode_of_data dn;
245 set_new_dnode(&dn, inode, NULL, NULL, 0);
246 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
250 if (!f2fs_has_inline_data(inode)) {
255 f2fs_bug_on(F2FS_I_SB(inode), page->index);
257 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true);
258 src_addr = kmap_atomic(page);
259 dst_addr = inline_data_addr(inode, dn.inode_page);
260 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
261 kunmap_atomic(src_addr);
262 set_page_dirty(dn.inode_page);
264 f2fs_clear_radix_tree_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 bool 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);
296 f2fs_bug_on(sbi, IS_ERR(ipage));
298 f2fs_wait_on_page_writeback(ipage, NODE, true);
300 src_addr = inline_data_addr(inode, npage);
301 dst_addr = inline_data_addr(inode, ipage);
302 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
304 set_inode_flag(inode, FI_INLINE_DATA);
305 set_inode_flag(inode, FI_DATA_EXIST);
307 set_page_dirty(ipage);
308 f2fs_put_page(ipage, 1);
312 if (f2fs_has_inline_data(inode)) {
313 ipage = f2fs_get_node_page(sbi, inode->i_ino);
314 f2fs_bug_on(sbi, IS_ERR(ipage));
315 f2fs_truncate_inline_inode(inode, ipage, 0);
316 clear_inode_flag(inode, FI_INLINE_DATA);
317 f2fs_put_page(ipage, 1);
318 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
319 if (f2fs_truncate_blocks(inode, 0, false, false))
326 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
327 struct fscrypt_name *fname, struct page **res_page)
329 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
330 struct qstr name = FSTR_TO_QSTR(&fname->disk_name);
331 struct f2fs_dir_entry *de;
332 struct f2fs_dentry_ptr d;
335 f2fs_hash_t namehash;
337 ipage = f2fs_get_node_page(sbi, dir->i_ino);
343 namehash = f2fs_dentry_hash(&name, fname);
345 inline_dentry = inline_data_addr(dir, ipage);
347 make_dentry_ptr_inline(dir, &d, inline_dentry);
348 de = f2fs_find_target_dentry(fname, namehash, NULL, &d);
353 f2fs_put_page(ipage, 0);
358 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
361 struct f2fs_dentry_ptr d;
364 inline_dentry = inline_data_addr(inode, ipage);
366 make_dentry_ptr_inline(inode, &d, inline_dentry);
367 f2fs_do_make_empty_dir(inode, parent, &d);
369 set_page_dirty(ipage);
371 /* update i_size to MAX_INLINE_DATA */
372 if (i_size_read(inode) < MAX_INLINE_DATA(inode))
373 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
378 * NOTE: ipage is grabbed by caller, but if any error occurs, we should
379 * release ipage in this function.
381 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
385 struct dnode_of_data dn;
386 struct f2fs_dentry_block *dentry_blk;
387 struct f2fs_dentry_ptr src, dst;
390 page = f2fs_grab_cache_page(dir->i_mapping, 0, false);
392 f2fs_put_page(ipage, 1);
396 set_new_dnode(&dn, dir, ipage, NULL, 0);
397 err = f2fs_reserve_block(&dn, 0);
401 if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
403 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
404 f2fs_msg(F2FS_P_SB(page)->sb, KERN_WARNING,
405 "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, "
407 __func__, dir->i_ino, dn.data_blkaddr);
412 f2fs_wait_on_page_writeback(page, DATA, true);
414 dentry_blk = page_address(page);
416 make_dentry_ptr_inline(dir, &src, inline_dentry);
417 make_dentry_ptr_block(dir, &dst, dentry_blk);
419 /* copy data from inline dentry block to new dentry block */
420 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
421 memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap);
423 * we do not need to zero out remainder part of dentry and filename
424 * field, since we have used bitmap for marking the usage status of
425 * them, besides, we can also ignore copying/zeroing reserved space
426 * of dentry block, because them haven't been used so far.
428 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
429 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
431 if (!PageUptodate(page))
432 SetPageUptodate(page);
433 set_page_dirty(page);
435 /* clear inline dir and flag after data writeback */
436 f2fs_truncate_inline_inode(dir, ipage, 0);
438 stat_dec_inline_dir(dir);
439 clear_inode_flag(dir, FI_INLINE_DENTRY);
441 f2fs_i_depth_write(dir, 1);
442 if (i_size_read(dir) < PAGE_SIZE)
443 f2fs_i_size_write(dir, PAGE_SIZE);
445 f2fs_put_page(page, 1);
449 static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
451 struct f2fs_dentry_ptr d;
452 unsigned long bit_pos = 0;
455 make_dentry_ptr_inline(dir, &d, inline_dentry);
457 while (bit_pos < d.max) {
458 struct f2fs_dir_entry *de;
459 struct qstr new_name;
463 if (!test_bit_le(bit_pos, d.bitmap)) {
468 de = &d.dentry[bit_pos];
470 if (unlikely(!de->name_len)) {
475 new_name.name = d.filename[bit_pos];
476 new_name.len = le16_to_cpu(de->name_len);
478 ino = le32_to_cpu(de->ino);
479 fake_mode = f2fs_get_de_type(de) << S_SHIFT;
481 err = f2fs_add_regular_entry(dir, &new_name, NULL, NULL,
484 goto punch_dentry_pages;
486 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
490 truncate_inode_pages(&dir->i_data, 0);
491 f2fs_truncate_blocks(dir, 0, false, false);
492 f2fs_remove_dirty_inode(dir);
496 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
502 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
503 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
504 if (!backup_dentry) {
505 f2fs_put_page(ipage, 1);
509 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
510 f2fs_truncate_inline_inode(dir, ipage, 0);
514 err = f2fs_add_inline_entries(dir, backup_dentry);
520 stat_dec_inline_dir(dir);
521 clear_inode_flag(dir, FI_INLINE_DENTRY);
522 kfree(backup_dentry);
526 f2fs_wait_on_page_writeback(ipage, NODE, true);
527 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
528 f2fs_i_depth_write(dir, 0);
529 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
530 set_page_dirty(ipage);
531 f2fs_put_page(ipage, 1);
533 kfree(backup_dentry);
537 static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage,
540 if (!F2FS_I(dir)->i_dir_level)
541 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
543 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
546 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
547 const struct qstr *orig_name,
548 struct inode *inode, nid_t ino, umode_t mode)
550 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
552 unsigned int bit_pos;
553 f2fs_hash_t name_hash;
554 void *inline_dentry = NULL;
555 struct f2fs_dentry_ptr d;
556 int slots = GET_DENTRY_SLOTS(new_name->len);
557 struct page *page = NULL;
560 ipage = f2fs_get_node_page(sbi, dir->i_ino);
562 return PTR_ERR(ipage);
564 inline_dentry = inline_data_addr(dir, ipage);
565 make_dentry_ptr_inline(dir, &d, inline_dentry);
567 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
568 if (bit_pos >= d.max) {
569 err = f2fs_convert_inline_dir(dir, ipage, inline_dentry);
577 down_write(&F2FS_I(inode)->i_sem);
578 page = f2fs_init_inode_metadata(inode, dir, new_name,
586 f2fs_wait_on_page_writeback(ipage, NODE, true);
588 name_hash = f2fs_dentry_hash(new_name, NULL);
589 f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos);
591 set_page_dirty(ipage);
593 /* we don't need to mark_inode_dirty now */
595 f2fs_i_pino_write(inode, dir->i_ino);
596 f2fs_put_page(page, 1);
599 f2fs_update_parent_metadata(dir, inode, 0);
602 up_write(&F2FS_I(inode)->i_sem);
604 f2fs_put_page(ipage, 1);
608 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
609 struct inode *dir, struct inode *inode)
611 struct f2fs_dentry_ptr d;
613 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
614 unsigned int bit_pos;
618 f2fs_wait_on_page_writeback(page, NODE, true);
620 inline_dentry = inline_data_addr(dir, page);
621 make_dentry_ptr_inline(dir, &d, inline_dentry);
623 bit_pos = dentry - d.dentry;
624 for (i = 0; i < slots; i++)
625 __clear_bit_le(bit_pos + i, d.bitmap);
627 set_page_dirty(page);
628 f2fs_put_page(page, 1);
630 dir->i_ctime = dir->i_mtime = current_time(dir);
631 f2fs_mark_inode_dirty_sync(dir, false);
634 f2fs_drop_nlink(dir, inode);
637 bool f2fs_empty_inline_dir(struct inode *dir)
639 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
641 unsigned int bit_pos = 2;
643 struct f2fs_dentry_ptr d;
645 ipage = f2fs_get_node_page(sbi, dir->i_ino);
649 inline_dentry = inline_data_addr(dir, ipage);
650 make_dentry_ptr_inline(dir, &d, inline_dentry);
652 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
654 f2fs_put_page(ipage, 1);
662 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
663 struct fscrypt_str *fstr)
665 struct inode *inode = file_inode(file);
666 struct page *ipage = NULL;
667 struct f2fs_dentry_ptr d;
668 void *inline_dentry = NULL;
671 make_dentry_ptr_inline(inode, &d, inline_dentry);
673 if (ctx->pos == d.max)
676 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
678 return PTR_ERR(ipage);
680 inline_dentry = inline_data_addr(inode, ipage);
682 make_dentry_ptr_inline(inode, &d, inline_dentry);
684 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
688 f2fs_put_page(ipage, 1);
689 return err < 0 ? err : 0;
692 int f2fs_inline_data_fiemap(struct inode *inode,
693 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
695 __u64 byteaddr, ilen;
696 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
702 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
704 return PTR_ERR(ipage);
706 if (!f2fs_has_inline_data(inode)) {
711 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
714 if (start + len < ilen)
718 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
722 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
723 byteaddr += (char *)inline_data_addr(inode, ipage) -
724 (char *)F2FS_INODE(ipage);
725 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
727 f2fs_put_page(ipage, 1);