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Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
e18c65b2 HL |
2 | /* |
3 | * fs/f2fs/inline.c | |
4 | * Copyright (c) 2013, Intel Corporation | |
5 | * Authors: Huajun Li <huajun.li@intel.com> | |
6 | * Haicheng Li <haicheng.li@intel.com> | |
e18c65b2 HL |
7 | */ |
8 | ||
9 | #include <linux/fs.h> | |
10 | #include <linux/f2fs_fs.h> | |
10c5db28 | 11 | #include <linux/fiemap.h> |
e18c65b2 HL |
12 | |
13 | #include "f2fs.h" | |
67f8cf3c | 14 | #include "node.h" |
dd5a09bd | 15 | #include <trace/events/f2fs.h> |
e18c65b2 | 16 | |
9d0f50c3 | 17 | static bool support_inline_data(struct inode *inode) |
e18c65b2 | 18 | { |
88b88a66 JK |
19 | if (f2fs_is_atomic_file(inode)) |
20 | return false; | |
368a0e40 | 21 | if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode)) |
e18c65b2 | 22 | return false; |
f2470371 | 23 | if (i_size_read(inode) > MAX_INLINE_DATA(inode)) |
92dffd01 | 24 | return false; |
9d0f50c3 CY |
25 | return true; |
26 | } | |
27 | ||
28 | bool f2fs_may_inline_data(struct inode *inode) | |
29 | { | |
30 | if (!support_inline_data(inode)) | |
31 | return false; | |
32 | ||
33 | return !f2fs_post_read_required(inode); | |
34 | } | |
92dffd01 | 35 | |
9d0f50c3 CY |
36 | bool f2fs_sanity_check_inline_data(struct inode *inode) |
37 | { | |
38 | if (!f2fs_has_inline_data(inode)) | |
fcc85a4d JK |
39 | return false; |
40 | ||
9d0f50c3 CY |
41 | if (!support_inline_data(inode)) |
42 | return true; | |
43 | ||
44 | /* | |
45 | * used by sanity_check_inode(), when disk layout fields has not | |
46 | * been synchronized to inmem fields. | |
47 | */ | |
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))); | |
e18c65b2 HL |
51 | } |
52 | ||
01b960e9 JK |
53 | bool f2fs_may_inline_dentry(struct inode *inode) |
54 | { | |
55 | if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY)) | |
56 | return false; | |
57 | ||
58 | if (!S_ISDIR(inode->i_mode)) | |
59 | return false; | |
60 | ||
61 | return true; | |
62 | } | |
63 | ||
4d57b86d | 64 | void f2fs_do_read_inline_data(struct page *page, struct page *ipage) |
e18c65b2 | 65 | { |
f2470371 | 66 | struct inode *inode = page->mapping->host; |
e18c65b2 HL |
67 | void *src_addr, *dst_addr; |
68 | ||
b3d208f9 JK |
69 | if (PageUptodate(page)) |
70 | return; | |
04a17fb1 | 71 | |
b3d208f9 | 72 | f2fs_bug_on(F2FS_P_SB(page), page->index); |
e18c65b2 | 73 | |
f2470371 | 74 | zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE); |
e18c65b2 HL |
75 | |
76 | /* Copy the whole inline data block */ | |
f2470371 | 77 | src_addr = inline_data_addr(inode, ipage); |
f1e33a04 | 78 | dst_addr = kmap_atomic(page); |
f2470371 | 79 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); |
427a45c8 | 80 | flush_dcache_page(page); |
f1e33a04 | 81 | kunmap_atomic(dst_addr); |
237c0790 JK |
82 | if (!PageUptodate(page)) |
83 | SetPageUptodate(page); | |
b3d208f9 JK |
84 | } |
85 | ||
4d57b86d CY |
86 | void f2fs_truncate_inline_inode(struct inode *inode, |
87 | struct page *ipage, u64 from) | |
feeb0deb | 88 | { |
0bfcfcca CY |
89 | void *addr; |
90 | ||
f2470371 | 91 | if (from >= MAX_INLINE_DATA(inode)) |
bd4667cb | 92 | return; |
0bfcfcca | 93 | |
f2470371 | 94 | addr = inline_data_addr(inode, ipage); |
0bfcfcca | 95 | |
bae0ee7a | 96 | f2fs_wait_on_page_writeback(ipage, NODE, true, true); |
f2470371 | 97 | memset(addr + from, 0, MAX_INLINE_DATA(inode) - from); |
ee6d182f | 98 | set_page_dirty(ipage); |
bd4667cb KM |
99 | |
100 | if (from == 0) | |
101 | clear_inode_flag(inode, FI_DATA_EXIST); | |
feeb0deb CY |
102 | } |
103 | ||
b3d208f9 JK |
104 | int f2fs_read_inline_data(struct inode *inode, struct page *page) |
105 | { | |
106 | struct page *ipage; | |
107 | ||
4d57b86d | 108 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
b3d208f9 JK |
109 | if (IS_ERR(ipage)) { |
110 | unlock_page(page); | |
111 | return PTR_ERR(ipage); | |
112 | } | |
e18c65b2 | 113 | |
b3d208f9 JK |
114 | if (!f2fs_has_inline_data(inode)) { |
115 | f2fs_put_page(ipage, 1); | |
116 | return -EAGAIN; | |
117 | } | |
118 | ||
119 | if (page->index) | |
09cbfeaf | 120 | zero_user_segment(page, 0, PAGE_SIZE); |
b3d208f9 | 121 | else |
4d57b86d | 122 | f2fs_do_read_inline_data(page, ipage); |
b3d208f9 | 123 | |
237c0790 JK |
124 | if (!PageUptodate(page)) |
125 | SetPageUptodate(page); | |
b3d208f9 JK |
126 | f2fs_put_page(ipage, 1); |
127 | unlock_page(page); | |
e18c65b2 HL |
128 | return 0; |
129 | } | |
130 | ||
b3d208f9 | 131 | int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) |
e18c65b2 | 132 | { |
e18c65b2 | 133 | struct f2fs_io_info fio = { |
05ca3632 | 134 | .sbi = F2FS_I_SB(dn->inode), |
39d787be | 135 | .ino = dn->inode->i_ino, |
e18c65b2 | 136 | .type = DATA, |
04d328de | 137 | .op = REQ_OP_WRITE, |
70fd7614 | 138 | .op_flags = REQ_SYNC | REQ_PRIO, |
05ca3632 | 139 | .page = page, |
4375a336 | 140 | .encrypted_page = NULL, |
b0af6d49 | 141 | .io_type = FS_DATA_IO, |
e18c65b2 | 142 | }; |
7735730d | 143 | struct node_info ni; |
158c194c | 144 | int dirty, err; |
e18c65b2 | 145 | |
b3d208f9 JK |
146 | if (!f2fs_exist_data(dn->inode)) |
147 | goto clear_out; | |
ec4e7af4 | 148 | |
b3d208f9 | 149 | err = f2fs_reserve_block(dn, 0); |
15c6e3aa | 150 | if (err) |
b3d208f9 | 151 | return err; |
e18c65b2 | 152 | |
7735730d CY |
153 | err = f2fs_get_node_info(fio.sbi, dn->nid, &ni); |
154 | if (err) { | |
e8c82c11 | 155 | f2fs_truncate_data_blocks_range(dn, 1); |
7735730d CY |
156 | f2fs_put_dnode(dn); |
157 | return err; | |
158 | } | |
159 | ||
160 | fio.version = ni.version; | |
161 | ||
4dbe38dc CY |
162 | if (unlikely(dn->data_blkaddr != NEW_ADDR)) { |
163 | f2fs_put_dnode(dn); | |
164 | set_sbi_flag(fio.sbi, SBI_NEED_FSCK); | |
dcbb4c10 JP |
165 | f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", |
166 | __func__, dn->inode->i_ino, dn->data_blkaddr); | |
10f966bb | 167 | return -EFSCORRUPTED; |
4dbe38dc CY |
168 | } |
169 | ||
85ead818 | 170 | f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page)); |
b3d208f9 | 171 | |
4d57b86d | 172 | f2fs_do_read_inline_data(page, dn->inode_page); |
6282adbf JK |
173 | set_page_dirty(page); |
174 | ||
158c194c JK |
175 | /* clear dirty state */ |
176 | dirty = clear_page_dirty_for_io(page); | |
177 | ||
e18c65b2 HL |
178 | /* write data page to try to make data consistent */ |
179 | set_page_writeback(page); | |
17c50035 | 180 | ClearPageError(page); |
7a9d7548 | 181 | fio.old_blkaddr = dn->data_blkaddr; |
ef095d19 | 182 | set_inode_flag(dn->inode, FI_HOT_DATA); |
4d57b86d | 183 | f2fs_outplace_write_data(dn, &fio); |
bae0ee7a | 184 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
933439c8 | 185 | if (dirty) { |
158c194c | 186 | inode_dec_dirty_pages(dn->inode); |
4d57b86d | 187 | f2fs_remove_dirty_inode(dn->inode); |
933439c8 | 188 | } |
e18c65b2 | 189 | |
95f5b0fc | 190 | /* this converted inline_data should be recovered. */ |
91942321 | 191 | set_inode_flag(dn->inode, FI_APPEND_WRITE); |
95f5b0fc | 192 | |
e18c65b2 | 193 | /* clear inline data and flag after data writeback */ |
4d57b86d | 194 | f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0); |
b763f3be | 195 | clear_page_private_inline(dn->inode_page); |
b3d208f9 | 196 | clear_out: |
b3d208f9 | 197 | stat_dec_inline_inode(dn->inode); |
bd4667cb | 198 | clear_inode_flag(dn->inode, FI_INLINE_DATA); |
b3d208f9 JK |
199 | f2fs_put_dnode(dn); |
200 | return 0; | |
e18c65b2 HL |
201 | } |
202 | ||
b3d208f9 | 203 | int f2fs_convert_inline_inode(struct inode *inode) |
e18c65b2 | 204 | { |
b3d208f9 JK |
205 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
206 | struct dnode_of_data dn; | |
207 | struct page *ipage, *page; | |
208 | int err = 0; | |
e18c65b2 | 209 | |
ec2ddf49 JK |
210 | if (!f2fs_has_inline_data(inode) || |
211 | f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb)) | |
b9d777b8 JK |
212 | return 0; |
213 | ||
ec02efb2 | 214 | err = f2fs_dquot_initialize(inode); |
25fb04db YC |
215 | if (err) |
216 | return err; | |
217 | ||
300e129c | 218 | page = f2fs_grab_cache_page(inode->i_mapping, 0, false); |
b3d208f9 JK |
219 | if (!page) |
220 | return -ENOMEM; | |
e18c65b2 | 221 | |
b3d208f9 JK |
222 | f2fs_lock_op(sbi); |
223 | ||
4d57b86d | 224 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
b3d208f9 | 225 | if (IS_ERR(ipage)) { |
6d20aff8 JK |
226 | err = PTR_ERR(ipage); |
227 | goto out; | |
b067ba1f | 228 | } |
e18c65b2 | 229 | |
b3d208f9 JK |
230 | set_new_dnode(&dn, inode, ipage, ipage, 0); |
231 | ||
232 | if (f2fs_has_inline_data(inode)) | |
233 | err = f2fs_convert_inline_page(&dn, page); | |
234 | ||
235 | f2fs_put_dnode(&dn); | |
6d20aff8 | 236 | out: |
b3d208f9 JK |
237 | f2fs_unlock_op(sbi); |
238 | ||
239 | f2fs_put_page(page, 1); | |
2a340760 | 240 | |
28e18ee6 CIK |
241 | if (!err) |
242 | f2fs_balance_fs(sbi, dn.node_changed); | |
2a340760 | 243 | |
e18c65b2 HL |
244 | return err; |
245 | } | |
246 | ||
b3d208f9 | 247 | int f2fs_write_inline_data(struct inode *inode, struct page *page) |
e18c65b2 HL |
248 | { |
249 | void *src_addr, *dst_addr; | |
e18c65b2 HL |
250 | struct dnode_of_data dn; |
251 | int err; | |
252 | ||
253 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 254 | err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
e18c65b2 HL |
255 | if (err) |
256 | return err; | |
e18c65b2 | 257 | |
c08a690b | 258 | if (!f2fs_has_inline_data(inode)) { |
b3d208f9 JK |
259 | f2fs_put_dnode(&dn); |
260 | return -EAGAIN; | |
c08a690b JK |
261 | } |
262 | ||
b3d208f9 JK |
263 | f2fs_bug_on(F2FS_I_SB(inode), page->index); |
264 | ||
bae0ee7a | 265 | f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true); |
f1e33a04 | 266 | src_addr = kmap_atomic(page); |
f2470371 CY |
267 | dst_addr = inline_data_addr(inode, dn.inode_page); |
268 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); | |
f1e33a04 | 269 | kunmap_atomic(src_addr); |
ee6d182f | 270 | set_page_dirty(dn.inode_page); |
e18c65b2 | 271 | |
5ec2d99d | 272 | f2fs_clear_page_cache_dirty_tag(page); |
0abd8e70 | 273 | |
91942321 JK |
274 | set_inode_flag(inode, FI_APPEND_WRITE); |
275 | set_inode_flag(inode, FI_DATA_EXIST); | |
b3d208f9 | 276 | |
b763f3be | 277 | clear_page_private_inline(dn.inode_page); |
e18c65b2 | 278 | f2fs_put_dnode(&dn); |
e18c65b2 HL |
279 | return 0; |
280 | } | |
1e1bb4ba | 281 | |
9627a7b3 | 282 | int f2fs_recover_inline_data(struct inode *inode, struct page *npage) |
1e1bb4ba | 283 | { |
4081363f | 284 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1e1bb4ba JK |
285 | struct f2fs_inode *ri = NULL; |
286 | void *src_addr, *dst_addr; | |
287 | struct page *ipage; | |
288 | ||
289 | /* | |
290 | * The inline_data recovery policy is as follows. | |
291 | * [prev.] [next] of inline_data flag | |
292 | * o o -> recover inline_data | |
293 | * o x -> remove inline_data, and then recover data blocks | |
6e5ca4fc | 294 | * x o -> remove data blocks, and then recover inline_data |
1e1bb4ba JK |
295 | * x x -> recover data blocks |
296 | */ | |
297 | if (IS_INODE(npage)) | |
298 | ri = F2FS_INODE(npage); | |
299 | ||
300 | if (f2fs_has_inline_data(inode) && | |
0342fd30 | 301 | ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
1e1bb4ba | 302 | process_inline: |
4d57b86d | 303 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
9627a7b3 CY |
304 | if (IS_ERR(ipage)) |
305 | return PTR_ERR(ipage); | |
1e1bb4ba | 306 | |
bae0ee7a | 307 | f2fs_wait_on_page_writeback(ipage, NODE, true, true); |
54b591df | 308 | |
f2470371 CY |
309 | src_addr = inline_data_addr(inode, npage); |
310 | dst_addr = inline_data_addr(inode, ipage); | |
311 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); | |
b3d208f9 | 312 | |
91942321 JK |
313 | set_inode_flag(inode, FI_INLINE_DATA); |
314 | set_inode_flag(inode, FI_DATA_EXIST); | |
b3d208f9 | 315 | |
ee6d182f | 316 | set_page_dirty(ipage); |
1e1bb4ba | 317 | f2fs_put_page(ipage, 1); |
9627a7b3 | 318 | return 1; |
1e1bb4ba JK |
319 | } |
320 | ||
321 | if (f2fs_has_inline_data(inode)) { | |
4d57b86d | 322 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
9627a7b3 CY |
323 | if (IS_ERR(ipage)) |
324 | return PTR_ERR(ipage); | |
4d57b86d | 325 | f2fs_truncate_inline_inode(inode, ipage, 0); |
84921561 | 326 | stat_dec_inline_inode(inode); |
bd4667cb | 327 | clear_inode_flag(inode, FI_INLINE_DATA); |
1e1bb4ba | 328 | f2fs_put_page(ipage, 1); |
0342fd30 | 329 | } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
9627a7b3 CY |
330 | int ret; |
331 | ||
332 | ret = f2fs_truncate_blocks(inode, 0, false); | |
333 | if (ret) | |
334 | return ret; | |
84921561 | 335 | stat_inc_inline_inode(inode); |
1e1bb4ba JK |
336 | goto process_inline; |
337 | } | |
9627a7b3 | 338 | return 0; |
1e1bb4ba | 339 | } |
201a05be | 340 | |
4d57b86d | 341 | struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, |
43c780ba EB |
342 | const struct f2fs_filename *fname, |
343 | struct page **res_page) | |
201a05be CY |
344 | { |
345 | struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); | |
201a05be | 346 | struct f2fs_dir_entry *de; |
7b3cd7d6 | 347 | struct f2fs_dentry_ptr d; |
4e6ebf6d | 348 | struct page *ipage; |
f2470371 | 349 | void *inline_dentry; |
201a05be | 350 | |
4d57b86d | 351 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
42d96401 JK |
352 | if (IS_ERR(ipage)) { |
353 | *res_page = ipage; | |
201a05be | 354 | return NULL; |
42d96401 | 355 | } |
201a05be | 356 | |
f2470371 | 357 | inline_dentry = inline_data_addr(dir, ipage); |
201a05be | 358 | |
f2470371 | 359 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
43c780ba | 360 | de = f2fs_find_target_dentry(&d, fname, NULL); |
201a05be | 361 | unlock_page(ipage); |
7ad08a58 DR |
362 | if (IS_ERR(de)) { |
363 | *res_page = ERR_CAST(de); | |
364 | de = NULL; | |
365 | } | |
4e6ebf6d JK |
366 | if (de) |
367 | *res_page = ipage; | |
368 | else | |
369 | f2fs_put_page(ipage, 0); | |
370 | ||
201a05be CY |
371 | return de; |
372 | } | |
373 | ||
4d57b86d | 374 | int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, |
201a05be CY |
375 | struct page *ipage) |
376 | { | |
062a3e7b | 377 | struct f2fs_dentry_ptr d; |
f2470371 | 378 | void *inline_dentry; |
201a05be | 379 | |
f2470371 | 380 | inline_dentry = inline_data_addr(inode, ipage); |
201a05be | 381 | |
f2470371 | 382 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
4d57b86d | 383 | f2fs_do_make_empty_dir(inode, parent, &d); |
201a05be CY |
384 | |
385 | set_page_dirty(ipage); | |
386 | ||
387 | /* update i_size to MAX_INLINE_DATA */ | |
f2470371 CY |
388 | if (i_size_read(inode) < MAX_INLINE_DATA(inode)) |
389 | f2fs_i_size_write(inode, MAX_INLINE_DATA(inode)); | |
201a05be CY |
390 | return 0; |
391 | } | |
392 | ||
470f00e9 CY |
393 | /* |
394 | * NOTE: ipage is grabbed by caller, but if any error occurs, we should | |
395 | * release ipage in this function. | |
396 | */ | |
675f10bd | 397 | static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, |
f2470371 | 398 | void *inline_dentry) |
201a05be CY |
399 | { |
400 | struct page *page; | |
401 | struct dnode_of_data dn; | |
402 | struct f2fs_dentry_block *dentry_blk; | |
76a9dd85 | 403 | struct f2fs_dentry_ptr src, dst; |
201a05be CY |
404 | int err; |
405 | ||
dd973007 | 406 | page = f2fs_grab_cache_page(dir->i_mapping, 0, true); |
470f00e9 CY |
407 | if (!page) { |
408 | f2fs_put_page(ipage, 1); | |
201a05be | 409 | return -ENOMEM; |
470f00e9 | 410 | } |
201a05be CY |
411 | |
412 | set_new_dnode(&dn, dir, ipage, NULL, 0); | |
413 | err = f2fs_reserve_block(&dn, 0); | |
414 | if (err) | |
415 | goto out; | |
416 | ||
4dbe38dc CY |
417 | if (unlikely(dn.data_blkaddr != NEW_ADDR)) { |
418 | f2fs_put_dnode(&dn); | |
419 | set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK); | |
dcbb4c10 JP |
420 | f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", |
421 | __func__, dir->i_ino, dn.data_blkaddr); | |
10f966bb | 422 | err = -EFSCORRUPTED; |
4dbe38dc CY |
423 | goto out; |
424 | } | |
425 | ||
bae0ee7a | 426 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
201a05be | 427 | |
bdbc90fa | 428 | dentry_blk = page_address(page); |
201a05be | 429 | |
f2470371 CY |
430 | make_dentry_ptr_inline(dir, &src, inline_dentry); |
431 | make_dentry_ptr_block(dir, &dst, dentry_blk); | |
76a9dd85 | 432 | |
201a05be | 433 | /* copy data from inline dentry block to new dentry block */ |
76a9dd85 CY |
434 | memcpy(dst.bitmap, src.bitmap, src.nr_bitmap); |
435 | memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap); | |
4ec17d68 CY |
436 | /* |
437 | * we do not need to zero out remainder part of dentry and filename | |
438 | * field, since we have used bitmap for marking the usage status of | |
439 | * them, besides, we can also ignore copying/zeroing reserved space | |
440 | * of dentry block, because them haven't been used so far. | |
441 | */ | |
76a9dd85 CY |
442 | memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max); |
443 | memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN); | |
201a05be | 444 | |
237c0790 JK |
445 | if (!PageUptodate(page)) |
446 | SetPageUptodate(page); | |
201a05be CY |
447 | set_page_dirty(page); |
448 | ||
449 | /* clear inline dir and flag after data writeback */ | |
4d57b86d | 450 | f2fs_truncate_inline_inode(dir, ipage, 0); |
b3d208f9 | 451 | |
3289c061 | 452 | stat_dec_inline_dir(dir); |
91942321 | 453 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
201a05be | 454 | |
45a74688 CY |
455 | /* |
456 | * should retrieve reserved space which was used to keep | |
457 | * inline_dentry's structure for backward compatibility. | |
458 | */ | |
459 | if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && | |
460 | !f2fs_has_inline_xattr(dir)) | |
461 | F2FS_I(dir)->i_inline_xattr_size = 0; | |
462 | ||
205b9822 | 463 | f2fs_i_depth_write(dir, 1); |
ee6d182f | 464 | if (i_size_read(dir) < PAGE_SIZE) |
fc9581c8 | 465 | f2fs_i_size_write(dir, PAGE_SIZE); |
201a05be CY |
466 | out: |
467 | f2fs_put_page(page, 1); | |
468 | return err; | |
469 | } | |
470 | ||
f2470371 | 471 | static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry) |
675f10bd CY |
472 | { |
473 | struct f2fs_dentry_ptr d; | |
474 | unsigned long bit_pos = 0; | |
475 | int err = 0; | |
476 | ||
f2470371 | 477 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
675f10bd CY |
478 | |
479 | while (bit_pos < d.max) { | |
480 | struct f2fs_dir_entry *de; | |
43c780ba | 481 | struct f2fs_filename fname; |
675f10bd CY |
482 | nid_t ino; |
483 | umode_t fake_mode; | |
484 | ||
485 | if (!test_bit_le(bit_pos, d.bitmap)) { | |
486 | bit_pos++; | |
487 | continue; | |
488 | } | |
489 | ||
490 | de = &d.dentry[bit_pos]; | |
a4a13f58 CY |
491 | |
492 | if (unlikely(!de->name_len)) { | |
493 | bit_pos++; | |
494 | continue; | |
495 | } | |
496 | ||
43c780ba EB |
497 | /* |
498 | * We only need the disk_name and hash to move the dentry. | |
499 | * We don't need the original or casefolded filenames. | |
500 | */ | |
501 | memset(&fname, 0, sizeof(fname)); | |
502 | fname.disk_name.name = d.filename[bit_pos]; | |
503 | fname.disk_name.len = le16_to_cpu(de->name_len); | |
504 | fname.hash = de->hash_code; | |
675f10bd CY |
505 | |
506 | ino = le32_to_cpu(de->ino); | |
4d57b86d | 507 | fake_mode = f2fs_get_de_type(de) << S_SHIFT; |
675f10bd | 508 | |
43c780ba | 509 | err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode); |
675f10bd CY |
510 | if (err) |
511 | goto punch_dentry_pages; | |
512 | ||
675f10bd CY |
513 | bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); |
514 | } | |
515 | return 0; | |
516 | punch_dentry_pages: | |
517 | truncate_inode_pages(&dir->i_data, 0); | |
c42d28ce | 518 | f2fs_truncate_blocks(dir, 0, false); |
4d57b86d | 519 | f2fs_remove_dirty_inode(dir); |
675f10bd CY |
520 | return err; |
521 | } | |
522 | ||
523 | static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, | |
f2470371 | 524 | void *inline_dentry) |
675f10bd | 525 | { |
f2470371 | 526 | void *backup_dentry; |
675f10bd CY |
527 | int err; |
528 | ||
1ecc0c5c | 529 | backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), |
f2470371 | 530 | MAX_INLINE_DATA(dir), GFP_F2FS_ZERO); |
8975bdf4 CY |
531 | if (!backup_dentry) { |
532 | f2fs_put_page(ipage, 1); | |
675f10bd | 533 | return -ENOMEM; |
8975bdf4 | 534 | } |
675f10bd | 535 | |
f2470371 | 536 | memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir)); |
4d57b86d | 537 | f2fs_truncate_inline_inode(dir, ipage, 0); |
675f10bd CY |
538 | |
539 | unlock_page(ipage); | |
540 | ||
541 | err = f2fs_add_inline_entries(dir, backup_dentry); | |
542 | if (err) | |
543 | goto recover; | |
544 | ||
545 | lock_page(ipage); | |
546 | ||
547 | stat_dec_inline_dir(dir); | |
91942321 | 548 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
45a74688 CY |
549 | |
550 | /* | |
551 | * should retrieve reserved space which was used to keep | |
552 | * inline_dentry's structure for backward compatibility. | |
553 | */ | |
554 | if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && | |
555 | !f2fs_has_inline_xattr(dir)) | |
556 | F2FS_I(dir)->i_inline_xattr_size = 0; | |
557 | ||
c8eb7024 | 558 | kfree(backup_dentry); |
675f10bd CY |
559 | return 0; |
560 | recover: | |
561 | lock_page(ipage); | |
bae0ee7a | 562 | f2fs_wait_on_page_writeback(ipage, NODE, true, true); |
f2470371 | 563 | memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir)); |
205b9822 | 564 | f2fs_i_depth_write(dir, 0); |
f2470371 | 565 | f2fs_i_size_write(dir, MAX_INLINE_DATA(dir)); |
ee6d182f | 566 | set_page_dirty(ipage); |
675f10bd CY |
567 | f2fs_put_page(ipage, 1); |
568 | ||
c8eb7024 | 569 | kfree(backup_dentry); |
675f10bd CY |
570 | return err; |
571 | } | |
572 | ||
b06af2af | 573 | static int do_convert_inline_dir(struct inode *dir, struct page *ipage, |
f2470371 | 574 | void *inline_dentry) |
675f10bd CY |
575 | { |
576 | if (!F2FS_I(dir)->i_dir_level) | |
577 | return f2fs_move_inline_dirents(dir, ipage, inline_dentry); | |
578 | else | |
579 | return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry); | |
580 | } | |
581 | ||
b06af2af JK |
582 | int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry) |
583 | { | |
584 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
585 | struct page *ipage; | |
43c780ba | 586 | struct f2fs_filename fname; |
b06af2af JK |
587 | void *inline_dentry = NULL; |
588 | int err = 0; | |
589 | ||
590 | if (!f2fs_has_inline_dentry(dir)) | |
591 | return 0; | |
592 | ||
593 | f2fs_lock_op(sbi); | |
594 | ||
43c780ba | 595 | err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname); |
b06af2af JK |
596 | if (err) |
597 | goto out; | |
598 | ||
599 | ipage = f2fs_get_node_page(sbi, dir->i_ino); | |
600 | if (IS_ERR(ipage)) { | |
601 | err = PTR_ERR(ipage); | |
ff5f85c8 | 602 | goto out_fname; |
b06af2af JK |
603 | } |
604 | ||
605 | if (f2fs_has_enough_room(dir, ipage, &fname)) { | |
606 | f2fs_put_page(ipage, 1); | |
ff5f85c8 | 607 | goto out_fname; |
b06af2af JK |
608 | } |
609 | ||
610 | inline_dentry = inline_data_addr(dir, ipage); | |
611 | ||
612 | err = do_convert_inline_dir(dir, ipage, inline_dentry); | |
613 | if (!err) | |
614 | f2fs_put_page(ipage, 1); | |
ff5f85c8 | 615 | out_fname: |
43c780ba | 616 | f2fs_free_filename(&fname); |
b06af2af JK |
617 | out: |
618 | f2fs_unlock_op(sbi); | |
619 | return err; | |
620 | } | |
621 | ||
43c780ba EB |
622 | int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, |
623 | struct inode *inode, nid_t ino, umode_t mode) | |
201a05be CY |
624 | { |
625 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
626 | struct page *ipage; | |
627 | unsigned int bit_pos; | |
f2470371 | 628 | void *inline_dentry = NULL; |
3b4d732a | 629 | struct f2fs_dentry_ptr d; |
43c780ba | 630 | int slots = GET_DENTRY_SLOTS(fname->disk_name.len); |
510022a8 | 631 | struct page *page = NULL; |
201a05be | 632 | int err = 0; |
201a05be | 633 | |
4d57b86d | 634 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
201a05be CY |
635 | if (IS_ERR(ipage)) |
636 | return PTR_ERR(ipage); | |
637 | ||
f2470371 CY |
638 | inline_dentry = inline_data_addr(dir, ipage); |
639 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 | 640 | |
4d57b86d | 641 | bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max); |
76a9dd85 | 642 | if (bit_pos >= d.max) { |
b06af2af | 643 | err = do_convert_inline_dir(dir, ipage, inline_dentry); |
470f00e9 CY |
644 | if (err) |
645 | return err; | |
646 | err = -EAGAIN; | |
201a05be CY |
647 | goto out; |
648 | } | |
649 | ||
510022a8 JK |
650 | if (inode) { |
651 | down_write(&F2FS_I(inode)->i_sem); | |
43c780ba | 652 | page = f2fs_init_inode_metadata(inode, dir, fname, ipage); |
510022a8 JK |
653 | if (IS_ERR(page)) { |
654 | err = PTR_ERR(page); | |
655 | goto fail; | |
656 | } | |
201a05be | 657 | } |
bce8d112 | 658 | |
bae0ee7a | 659 | f2fs_wait_on_page_writeback(ipage, NODE, true, true); |
3b4d732a | 660 | |
43c780ba EB |
661 | f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash, |
662 | bit_pos); | |
3b4d732a | 663 | |
201a05be CY |
664 | set_page_dirty(ipage); |
665 | ||
666 | /* we don't need to mark_inode_dirty now */ | |
510022a8 | 667 | if (inode) { |
205b9822 | 668 | f2fs_i_pino_write(inode, dir->i_ino); |
98194030 CY |
669 | |
670 | /* synchronize inode page's data from inode cache */ | |
671 | if (is_inode_flag_set(inode, FI_NEW_INODE)) | |
672 | f2fs_update_inode(inode, page); | |
673 | ||
510022a8 JK |
674 | f2fs_put_page(page, 1); |
675 | } | |
201a05be | 676 | |
4d57b86d | 677 | f2fs_update_parent_metadata(dir, inode, 0); |
201a05be | 678 | fail: |
510022a8 JK |
679 | if (inode) |
680 | up_write(&F2FS_I(inode)->i_sem); | |
201a05be CY |
681 | out: |
682 | f2fs_put_page(ipage, 1); | |
683 | return err; | |
684 | } | |
685 | ||
686 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, | |
687 | struct inode *dir, struct inode *inode) | |
688 | { | |
76a9dd85 | 689 | struct f2fs_dentry_ptr d; |
f2470371 | 690 | void *inline_dentry; |
201a05be CY |
691 | int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); |
692 | unsigned int bit_pos; | |
693 | int i; | |
694 | ||
695 | lock_page(page); | |
bae0ee7a | 696 | f2fs_wait_on_page_writeback(page, NODE, true, true); |
201a05be | 697 | |
f2470371 CY |
698 | inline_dentry = inline_data_addr(dir, page); |
699 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 CY |
700 | |
701 | bit_pos = dentry - d.dentry; | |
201a05be | 702 | for (i = 0; i < slots; i++) |
76a9dd85 | 703 | __clear_bit_le(bit_pos + i, d.bitmap); |
201a05be CY |
704 | |
705 | set_page_dirty(page); | |
9f7c45cc | 706 | f2fs_put_page(page, 1); |
201a05be | 707 | |
078cd827 | 708 | dir->i_ctime = dir->i_mtime = current_time(dir); |
7c45729a | 709 | f2fs_mark_inode_dirty_sync(dir, false); |
201a05be CY |
710 | |
711 | if (inode) | |
9f7c45cc | 712 | f2fs_drop_nlink(dir, inode); |
201a05be CY |
713 | } |
714 | ||
715 | bool f2fs_empty_inline_dir(struct inode *dir) | |
716 | { | |
717 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
718 | struct page *ipage; | |
719 | unsigned int bit_pos = 2; | |
f2470371 | 720 | void *inline_dentry; |
76a9dd85 | 721 | struct f2fs_dentry_ptr d; |
201a05be | 722 | |
4d57b86d | 723 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
201a05be CY |
724 | if (IS_ERR(ipage)) |
725 | return false; | |
726 | ||
f2470371 CY |
727 | inline_dentry = inline_data_addr(dir, ipage); |
728 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 CY |
729 | |
730 | bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos); | |
201a05be CY |
731 | |
732 | f2fs_put_page(ipage, 1); | |
733 | ||
76a9dd85 | 734 | if (bit_pos < d.max) |
201a05be CY |
735 | return false; |
736 | ||
737 | return true; | |
738 | } | |
739 | ||
d8c6822a | 740 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, |
0b81d077 | 741 | struct fscrypt_str *fstr) |
201a05be CY |
742 | { |
743 | struct inode *inode = file_inode(file); | |
201a05be | 744 | struct page *ipage = NULL; |
7b3cd7d6 | 745 | struct f2fs_dentry_ptr d; |
f2470371 | 746 | void *inline_dentry = NULL; |
ed6bd4b1 | 747 | int err; |
201a05be | 748 | |
76a9dd85 CY |
749 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
750 | ||
751 | if (ctx->pos == d.max) | |
201a05be CY |
752 | return 0; |
753 | ||
4d57b86d | 754 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
201a05be CY |
755 | if (IS_ERR(ipage)) |
756 | return PTR_ERR(ipage); | |
757 | ||
aadcef64 CY |
758 | /* |
759 | * f2fs_readdir was protected by inode.i_rwsem, it is safe to access | |
760 | * ipage without page's lock held. | |
761 | */ | |
762 | unlock_page(ipage); | |
763 | ||
f2470371 | 764 | inline_dentry = inline_data_addr(inode, ipage); |
201a05be | 765 | |
64c24ecb | 766 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
7b3cd7d6 | 767 | |
ed6bd4b1 CY |
768 | err = f2fs_fill_dentries(ctx, &d, 0, fstr); |
769 | if (!err) | |
76a9dd85 | 770 | ctx->pos = d.max; |
201a05be | 771 | |
aadcef64 | 772 | f2fs_put_page(ipage, 0); |
ed6bd4b1 | 773 | return err < 0 ? err : 0; |
201a05be | 774 | } |
67f8cf3c JK |
775 | |
776 | int f2fs_inline_data_fiemap(struct inode *inode, | |
777 | struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) | |
778 | { | |
779 | __u64 byteaddr, ilen; | |
780 | __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | | |
781 | FIEMAP_EXTENT_LAST; | |
782 | struct node_info ni; | |
783 | struct page *ipage; | |
784 | int err = 0; | |
785 | ||
4d57b86d | 786 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
67f8cf3c JK |
787 | if (IS_ERR(ipage)) |
788 | return PTR_ERR(ipage); | |
789 | ||
7975f349 CY |
790 | if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) && |
791 | !f2fs_has_inline_data(inode)) { | |
792 | err = -EAGAIN; | |
793 | goto out; | |
794 | } | |
795 | ||
796 | if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) { | |
67f8cf3c JK |
797 | err = -EAGAIN; |
798 | goto out; | |
799 | } | |
800 | ||
f2470371 | 801 | ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode)); |
67f8cf3c JK |
802 | if (start >= ilen) |
803 | goto out; | |
804 | if (start + len < ilen) | |
805 | ilen = start + len; | |
806 | ilen -= start; | |
807 | ||
7735730d CY |
808 | err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); |
809 | if (err) | |
810 | goto out; | |
811 | ||
67f8cf3c | 812 | byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; |
f2470371 CY |
813 | byteaddr += (char *)inline_data_addr(inode, ipage) - |
814 | (char *)F2FS_INODE(ipage); | |
67f8cf3c | 815 | err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); |
dd5a09bd | 816 | trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err); |
67f8cf3c JK |
817 | out: |
818 | f2fs_put_page(ipage, 1); | |
819 | return err; | |
820 | } |