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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 | |
01b960e9 | 17 | bool f2fs_may_inline_data(struct inode *inode) |
e18c65b2 | 18 | { |
88b88a66 JK |
19 | if (f2fs_is_atomic_file(inode)) |
20 | return false; | |
21 | ||
368a0e40 | 22 | if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode)) |
e18c65b2 HL |
23 | return false; |
24 | ||
f2470371 | 25 | if (i_size_read(inode) > MAX_INLINE_DATA(inode)) |
92dffd01 JK |
26 | return false; |
27 | ||
6dbb1796 | 28 | if (f2fs_post_read_required(inode)) |
fcc85a4d JK |
29 | return false; |
30 | ||
e18c65b2 HL |
31 | return true; |
32 | } | |
33 | ||
01b960e9 JK |
34 | bool f2fs_may_inline_dentry(struct inode *inode) |
35 | { | |
36 | if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY)) | |
37 | return false; | |
38 | ||
39 | if (!S_ISDIR(inode->i_mode)) | |
40 | return false; | |
41 | ||
42 | return true; | |
43 | } | |
44 | ||
4d57b86d | 45 | void f2fs_do_read_inline_data(struct page *page, struct page *ipage) |
e18c65b2 | 46 | { |
f2470371 | 47 | struct inode *inode = page->mapping->host; |
e18c65b2 HL |
48 | void *src_addr, *dst_addr; |
49 | ||
b3d208f9 JK |
50 | if (PageUptodate(page)) |
51 | return; | |
04a17fb1 | 52 | |
b3d208f9 | 53 | f2fs_bug_on(F2FS_P_SB(page), page->index); |
e18c65b2 | 54 | |
f2470371 | 55 | zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE); |
e18c65b2 HL |
56 | |
57 | /* Copy the whole inline data block */ | |
f2470371 | 58 | src_addr = inline_data_addr(inode, ipage); |
f1e33a04 | 59 | dst_addr = kmap_atomic(page); |
f2470371 | 60 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); |
427a45c8 | 61 | flush_dcache_page(page); |
f1e33a04 | 62 | kunmap_atomic(dst_addr); |
237c0790 JK |
63 | if (!PageUptodate(page)) |
64 | SetPageUptodate(page); | |
b3d208f9 JK |
65 | } |
66 | ||
4d57b86d CY |
67 | void f2fs_truncate_inline_inode(struct inode *inode, |
68 | struct page *ipage, u64 from) | |
feeb0deb | 69 | { |
0bfcfcca CY |
70 | void *addr; |
71 | ||
f2470371 | 72 | if (from >= MAX_INLINE_DATA(inode)) |
bd4667cb | 73 | return; |
0bfcfcca | 74 | |
f2470371 | 75 | addr = inline_data_addr(inode, ipage); |
0bfcfcca | 76 | |
bae0ee7a | 77 | f2fs_wait_on_page_writeback(ipage, NODE, true, true); |
f2470371 | 78 | memset(addr + from, 0, MAX_INLINE_DATA(inode) - from); |
ee6d182f | 79 | set_page_dirty(ipage); |
bd4667cb KM |
80 | |
81 | if (from == 0) | |
82 | clear_inode_flag(inode, FI_DATA_EXIST); | |
feeb0deb CY |
83 | } |
84 | ||
b3d208f9 JK |
85 | int f2fs_read_inline_data(struct inode *inode, struct page *page) |
86 | { | |
87 | struct page *ipage; | |
88 | ||
4d57b86d | 89 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
b3d208f9 JK |
90 | if (IS_ERR(ipage)) { |
91 | unlock_page(page); | |
92 | return PTR_ERR(ipage); | |
93 | } | |
e18c65b2 | 94 | |
b3d208f9 JK |
95 | if (!f2fs_has_inline_data(inode)) { |
96 | f2fs_put_page(ipage, 1); | |
97 | return -EAGAIN; | |
98 | } | |
99 | ||
100 | if (page->index) | |
09cbfeaf | 101 | zero_user_segment(page, 0, PAGE_SIZE); |
b3d208f9 | 102 | else |
4d57b86d | 103 | f2fs_do_read_inline_data(page, ipage); |
b3d208f9 | 104 | |
237c0790 JK |
105 | if (!PageUptodate(page)) |
106 | SetPageUptodate(page); | |
b3d208f9 JK |
107 | f2fs_put_page(ipage, 1); |
108 | unlock_page(page); | |
e18c65b2 HL |
109 | return 0; |
110 | } | |
111 | ||
b3d208f9 | 112 | int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) |
e18c65b2 | 113 | { |
e18c65b2 | 114 | struct f2fs_io_info fio = { |
05ca3632 | 115 | .sbi = F2FS_I_SB(dn->inode), |
39d787be | 116 | .ino = dn->inode->i_ino, |
e18c65b2 | 117 | .type = DATA, |
04d328de | 118 | .op = REQ_OP_WRITE, |
70fd7614 | 119 | .op_flags = REQ_SYNC | REQ_PRIO, |
05ca3632 | 120 | .page = page, |
4375a336 | 121 | .encrypted_page = NULL, |
b0af6d49 | 122 | .io_type = FS_DATA_IO, |
e18c65b2 | 123 | }; |
7735730d | 124 | struct node_info ni; |
158c194c | 125 | int dirty, err; |
e18c65b2 | 126 | |
b3d208f9 JK |
127 | if (!f2fs_exist_data(dn->inode)) |
128 | goto clear_out; | |
ec4e7af4 | 129 | |
b3d208f9 | 130 | err = f2fs_reserve_block(dn, 0); |
15c6e3aa | 131 | if (err) |
b3d208f9 | 132 | return err; |
e18c65b2 | 133 | |
7735730d CY |
134 | err = f2fs_get_node_info(fio.sbi, dn->nid, &ni); |
135 | if (err) { | |
e8c82c11 | 136 | f2fs_truncate_data_blocks_range(dn, 1); |
7735730d CY |
137 | f2fs_put_dnode(dn); |
138 | return err; | |
139 | } | |
140 | ||
141 | fio.version = ni.version; | |
142 | ||
4dbe38dc CY |
143 | if (unlikely(dn->data_blkaddr != NEW_ADDR)) { |
144 | f2fs_put_dnode(dn); | |
145 | set_sbi_flag(fio.sbi, SBI_NEED_FSCK); | |
dcbb4c10 JP |
146 | f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", |
147 | __func__, dn->inode->i_ino, dn->data_blkaddr); | |
10f966bb | 148 | return -EFSCORRUPTED; |
4dbe38dc CY |
149 | } |
150 | ||
85ead818 | 151 | f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page)); |
b3d208f9 | 152 | |
4d57b86d | 153 | f2fs_do_read_inline_data(page, dn->inode_page); |
6282adbf JK |
154 | set_page_dirty(page); |
155 | ||
158c194c JK |
156 | /* clear dirty state */ |
157 | dirty = clear_page_dirty_for_io(page); | |
158 | ||
e18c65b2 HL |
159 | /* write data page to try to make data consistent */ |
160 | set_page_writeback(page); | |
17c50035 | 161 | ClearPageError(page); |
7a9d7548 | 162 | fio.old_blkaddr = dn->data_blkaddr; |
ef095d19 | 163 | set_inode_flag(dn->inode, FI_HOT_DATA); |
4d57b86d | 164 | f2fs_outplace_write_data(dn, &fio); |
bae0ee7a | 165 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
933439c8 | 166 | if (dirty) { |
158c194c | 167 | inode_dec_dirty_pages(dn->inode); |
4d57b86d | 168 | f2fs_remove_dirty_inode(dn->inode); |
933439c8 | 169 | } |
e18c65b2 | 170 | |
95f5b0fc | 171 | /* this converted inline_data should be recovered. */ |
91942321 | 172 | set_inode_flag(dn->inode, FI_APPEND_WRITE); |
95f5b0fc | 173 | |
e18c65b2 | 174 | /* clear inline data and flag after data writeback */ |
4d57b86d | 175 | f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0); |
2049d4fc | 176 | clear_inline_node(dn->inode_page); |
b3d208f9 | 177 | clear_out: |
b3d208f9 | 178 | stat_dec_inline_inode(dn->inode); |
bd4667cb | 179 | clear_inode_flag(dn->inode, FI_INLINE_DATA); |
b3d208f9 JK |
180 | f2fs_put_dnode(dn); |
181 | return 0; | |
e18c65b2 HL |
182 | } |
183 | ||
b3d208f9 | 184 | int f2fs_convert_inline_inode(struct inode *inode) |
e18c65b2 | 185 | { |
b3d208f9 JK |
186 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
187 | struct dnode_of_data dn; | |
188 | struct page *ipage, *page; | |
189 | int err = 0; | |
e18c65b2 | 190 | |
ec2ddf49 JK |
191 | if (!f2fs_has_inline_data(inode) || |
192 | f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb)) | |
b9d777b8 JK |
193 | return 0; |
194 | ||
25fb04db YC |
195 | err = dquot_initialize(inode); |
196 | if (err) | |
197 | return err; | |
198 | ||
300e129c | 199 | page = f2fs_grab_cache_page(inode->i_mapping, 0, false); |
b3d208f9 JK |
200 | if (!page) |
201 | return -ENOMEM; | |
e18c65b2 | 202 | |
b3d208f9 JK |
203 | f2fs_lock_op(sbi); |
204 | ||
4d57b86d | 205 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
b3d208f9 | 206 | if (IS_ERR(ipage)) { |
6d20aff8 JK |
207 | err = PTR_ERR(ipage); |
208 | goto out; | |
b067ba1f | 209 | } |
e18c65b2 | 210 | |
b3d208f9 JK |
211 | set_new_dnode(&dn, inode, ipage, ipage, 0); |
212 | ||
213 | if (f2fs_has_inline_data(inode)) | |
214 | err = f2fs_convert_inline_page(&dn, page); | |
215 | ||
216 | f2fs_put_dnode(&dn); | |
6d20aff8 | 217 | out: |
b3d208f9 JK |
218 | f2fs_unlock_op(sbi); |
219 | ||
220 | f2fs_put_page(page, 1); | |
2a340760 | 221 | |
2c4db1a6 | 222 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 223 | |
e18c65b2 HL |
224 | return err; |
225 | } | |
226 | ||
b3d208f9 | 227 | int f2fs_write_inline_data(struct inode *inode, struct page *page) |
e18c65b2 HL |
228 | { |
229 | void *src_addr, *dst_addr; | |
e18c65b2 HL |
230 | struct dnode_of_data dn; |
231 | int err; | |
232 | ||
233 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 234 | err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
e18c65b2 HL |
235 | if (err) |
236 | return err; | |
e18c65b2 | 237 | |
c08a690b | 238 | if (!f2fs_has_inline_data(inode)) { |
b3d208f9 JK |
239 | f2fs_put_dnode(&dn); |
240 | return -EAGAIN; | |
c08a690b JK |
241 | } |
242 | ||
b3d208f9 JK |
243 | f2fs_bug_on(F2FS_I_SB(inode), page->index); |
244 | ||
bae0ee7a | 245 | f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true); |
f1e33a04 | 246 | src_addr = kmap_atomic(page); |
f2470371 CY |
247 | dst_addr = inline_data_addr(inode, dn.inode_page); |
248 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); | |
f1e33a04 | 249 | kunmap_atomic(src_addr); |
ee6d182f | 250 | set_page_dirty(dn.inode_page); |
e18c65b2 | 251 | |
5ec2d99d | 252 | f2fs_clear_page_cache_dirty_tag(page); |
0abd8e70 | 253 | |
91942321 JK |
254 | set_inode_flag(inode, FI_APPEND_WRITE); |
255 | set_inode_flag(inode, FI_DATA_EXIST); | |
b3d208f9 | 256 | |
2049d4fc | 257 | clear_inline_node(dn.inode_page); |
e18c65b2 | 258 | f2fs_put_dnode(&dn); |
e18c65b2 HL |
259 | return 0; |
260 | } | |
1e1bb4ba | 261 | |
9627a7b3 | 262 | int f2fs_recover_inline_data(struct inode *inode, struct page *npage) |
1e1bb4ba | 263 | { |
4081363f | 264 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1e1bb4ba JK |
265 | struct f2fs_inode *ri = NULL; |
266 | void *src_addr, *dst_addr; | |
267 | struct page *ipage; | |
268 | ||
269 | /* | |
270 | * The inline_data recovery policy is as follows. | |
271 | * [prev.] [next] of inline_data flag | |
272 | * o o -> recover inline_data | |
273 | * o x -> remove inline_data, and then recover data blocks | |
6e5ca4fc | 274 | * x o -> remove data blocks, and then recover inline_data |
1e1bb4ba JK |
275 | * x x -> recover data blocks |
276 | */ | |
277 | if (IS_INODE(npage)) | |
278 | ri = F2FS_INODE(npage); | |
279 | ||
280 | if (f2fs_has_inline_data(inode) && | |
0342fd30 | 281 | ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
1e1bb4ba | 282 | process_inline: |
4d57b86d | 283 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
9627a7b3 CY |
284 | if (IS_ERR(ipage)) |
285 | return PTR_ERR(ipage); | |
1e1bb4ba | 286 | |
bae0ee7a | 287 | f2fs_wait_on_page_writeback(ipage, NODE, true, true); |
54b591df | 288 | |
f2470371 CY |
289 | src_addr = inline_data_addr(inode, npage); |
290 | dst_addr = inline_data_addr(inode, ipage); | |
291 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); | |
b3d208f9 | 292 | |
91942321 JK |
293 | set_inode_flag(inode, FI_INLINE_DATA); |
294 | set_inode_flag(inode, FI_DATA_EXIST); | |
b3d208f9 | 295 | |
ee6d182f | 296 | set_page_dirty(ipage); |
1e1bb4ba | 297 | f2fs_put_page(ipage, 1); |
9627a7b3 | 298 | return 1; |
1e1bb4ba JK |
299 | } |
300 | ||
301 | if (f2fs_has_inline_data(inode)) { | |
4d57b86d | 302 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
9627a7b3 CY |
303 | if (IS_ERR(ipage)) |
304 | return PTR_ERR(ipage); | |
4d57b86d | 305 | f2fs_truncate_inline_inode(inode, ipage, 0); |
84921561 | 306 | stat_dec_inline_inode(inode); |
bd4667cb | 307 | clear_inode_flag(inode, FI_INLINE_DATA); |
1e1bb4ba | 308 | f2fs_put_page(ipage, 1); |
0342fd30 | 309 | } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
9627a7b3 CY |
310 | int ret; |
311 | ||
312 | ret = f2fs_truncate_blocks(inode, 0, false); | |
313 | if (ret) | |
314 | return ret; | |
84921561 | 315 | stat_inc_inline_inode(inode); |
1e1bb4ba JK |
316 | goto process_inline; |
317 | } | |
9627a7b3 | 318 | return 0; |
1e1bb4ba | 319 | } |
201a05be | 320 | |
4d57b86d | 321 | struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, |
43c780ba EB |
322 | const struct f2fs_filename *fname, |
323 | struct page **res_page) | |
201a05be CY |
324 | { |
325 | struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); | |
201a05be | 326 | struct f2fs_dir_entry *de; |
7b3cd7d6 | 327 | struct f2fs_dentry_ptr d; |
4e6ebf6d | 328 | struct page *ipage; |
f2470371 | 329 | void *inline_dentry; |
201a05be | 330 | |
4d57b86d | 331 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
42d96401 JK |
332 | if (IS_ERR(ipage)) { |
333 | *res_page = ipage; | |
201a05be | 334 | return NULL; |
42d96401 | 335 | } |
201a05be | 336 | |
f2470371 | 337 | inline_dentry = inline_data_addr(dir, ipage); |
201a05be | 338 | |
f2470371 | 339 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
43c780ba | 340 | de = f2fs_find_target_dentry(&d, fname, NULL); |
201a05be | 341 | unlock_page(ipage); |
7ad08a58 DR |
342 | if (IS_ERR(de)) { |
343 | *res_page = ERR_CAST(de); | |
344 | de = NULL; | |
345 | } | |
4e6ebf6d JK |
346 | if (de) |
347 | *res_page = ipage; | |
348 | else | |
349 | f2fs_put_page(ipage, 0); | |
350 | ||
201a05be CY |
351 | return de; |
352 | } | |
353 | ||
4d57b86d | 354 | int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, |
201a05be CY |
355 | struct page *ipage) |
356 | { | |
062a3e7b | 357 | struct f2fs_dentry_ptr d; |
f2470371 | 358 | void *inline_dentry; |
201a05be | 359 | |
f2470371 | 360 | inline_dentry = inline_data_addr(inode, ipage); |
201a05be | 361 | |
f2470371 | 362 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
4d57b86d | 363 | f2fs_do_make_empty_dir(inode, parent, &d); |
201a05be CY |
364 | |
365 | set_page_dirty(ipage); | |
366 | ||
367 | /* update i_size to MAX_INLINE_DATA */ | |
f2470371 CY |
368 | if (i_size_read(inode) < MAX_INLINE_DATA(inode)) |
369 | f2fs_i_size_write(inode, MAX_INLINE_DATA(inode)); | |
201a05be CY |
370 | return 0; |
371 | } | |
372 | ||
470f00e9 CY |
373 | /* |
374 | * NOTE: ipage is grabbed by caller, but if any error occurs, we should | |
375 | * release ipage in this function. | |
376 | */ | |
675f10bd | 377 | static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, |
f2470371 | 378 | void *inline_dentry) |
201a05be CY |
379 | { |
380 | struct page *page; | |
381 | struct dnode_of_data dn; | |
382 | struct f2fs_dentry_block *dentry_blk; | |
76a9dd85 | 383 | struct f2fs_dentry_ptr src, dst; |
201a05be CY |
384 | int err; |
385 | ||
dd973007 | 386 | page = f2fs_grab_cache_page(dir->i_mapping, 0, true); |
470f00e9 CY |
387 | if (!page) { |
388 | f2fs_put_page(ipage, 1); | |
201a05be | 389 | return -ENOMEM; |
470f00e9 | 390 | } |
201a05be CY |
391 | |
392 | set_new_dnode(&dn, dir, ipage, NULL, 0); | |
393 | err = f2fs_reserve_block(&dn, 0); | |
394 | if (err) | |
395 | goto out; | |
396 | ||
4dbe38dc CY |
397 | if (unlikely(dn.data_blkaddr != NEW_ADDR)) { |
398 | f2fs_put_dnode(&dn); | |
399 | set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK); | |
dcbb4c10 JP |
400 | f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", |
401 | __func__, dir->i_ino, dn.data_blkaddr); | |
10f966bb | 402 | err = -EFSCORRUPTED; |
4dbe38dc CY |
403 | goto out; |
404 | } | |
405 | ||
bae0ee7a | 406 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
201a05be | 407 | |
bdbc90fa | 408 | dentry_blk = page_address(page); |
201a05be | 409 | |
f2470371 CY |
410 | make_dentry_ptr_inline(dir, &src, inline_dentry); |
411 | make_dentry_ptr_block(dir, &dst, dentry_blk); | |
76a9dd85 | 412 | |
201a05be | 413 | /* copy data from inline dentry block to new dentry block */ |
76a9dd85 CY |
414 | memcpy(dst.bitmap, src.bitmap, src.nr_bitmap); |
415 | memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap); | |
4ec17d68 CY |
416 | /* |
417 | * we do not need to zero out remainder part of dentry and filename | |
418 | * field, since we have used bitmap for marking the usage status of | |
419 | * them, besides, we can also ignore copying/zeroing reserved space | |
420 | * of dentry block, because them haven't been used so far. | |
421 | */ | |
76a9dd85 CY |
422 | memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max); |
423 | memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN); | |
201a05be | 424 | |
237c0790 JK |
425 | if (!PageUptodate(page)) |
426 | SetPageUptodate(page); | |
201a05be CY |
427 | set_page_dirty(page); |
428 | ||
429 | /* clear inline dir and flag after data writeback */ | |
4d57b86d | 430 | f2fs_truncate_inline_inode(dir, ipage, 0); |
b3d208f9 | 431 | |
3289c061 | 432 | stat_dec_inline_dir(dir); |
91942321 | 433 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
201a05be | 434 | |
45a74688 CY |
435 | /* |
436 | * should retrieve reserved space which was used to keep | |
437 | * inline_dentry's structure for backward compatibility. | |
438 | */ | |
439 | if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && | |
440 | !f2fs_has_inline_xattr(dir)) | |
441 | F2FS_I(dir)->i_inline_xattr_size = 0; | |
442 | ||
205b9822 | 443 | f2fs_i_depth_write(dir, 1); |
ee6d182f | 444 | if (i_size_read(dir) < PAGE_SIZE) |
fc9581c8 | 445 | f2fs_i_size_write(dir, PAGE_SIZE); |
201a05be CY |
446 | out: |
447 | f2fs_put_page(page, 1); | |
448 | return err; | |
449 | } | |
450 | ||
f2470371 | 451 | static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry) |
675f10bd CY |
452 | { |
453 | struct f2fs_dentry_ptr d; | |
454 | unsigned long bit_pos = 0; | |
455 | int err = 0; | |
456 | ||
f2470371 | 457 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
675f10bd CY |
458 | |
459 | while (bit_pos < d.max) { | |
460 | struct f2fs_dir_entry *de; | |
43c780ba | 461 | struct f2fs_filename fname; |
675f10bd CY |
462 | nid_t ino; |
463 | umode_t fake_mode; | |
464 | ||
465 | if (!test_bit_le(bit_pos, d.bitmap)) { | |
466 | bit_pos++; | |
467 | continue; | |
468 | } | |
469 | ||
470 | de = &d.dentry[bit_pos]; | |
a4a13f58 CY |
471 | |
472 | if (unlikely(!de->name_len)) { | |
473 | bit_pos++; | |
474 | continue; | |
475 | } | |
476 | ||
43c780ba EB |
477 | /* |
478 | * We only need the disk_name and hash to move the dentry. | |
479 | * We don't need the original or casefolded filenames. | |
480 | */ | |
481 | memset(&fname, 0, sizeof(fname)); | |
482 | fname.disk_name.name = d.filename[bit_pos]; | |
483 | fname.disk_name.len = le16_to_cpu(de->name_len); | |
484 | fname.hash = de->hash_code; | |
675f10bd CY |
485 | |
486 | ino = le32_to_cpu(de->ino); | |
4d57b86d | 487 | fake_mode = f2fs_get_de_type(de) << S_SHIFT; |
675f10bd | 488 | |
43c780ba | 489 | err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode); |
675f10bd CY |
490 | if (err) |
491 | goto punch_dentry_pages; | |
492 | ||
675f10bd CY |
493 | bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); |
494 | } | |
495 | return 0; | |
496 | punch_dentry_pages: | |
497 | truncate_inode_pages(&dir->i_data, 0); | |
c42d28ce | 498 | f2fs_truncate_blocks(dir, 0, false); |
4d57b86d | 499 | f2fs_remove_dirty_inode(dir); |
675f10bd CY |
500 | return err; |
501 | } | |
502 | ||
503 | static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, | |
f2470371 | 504 | void *inline_dentry) |
675f10bd | 505 | { |
f2470371 | 506 | void *backup_dentry; |
675f10bd CY |
507 | int err; |
508 | ||
1ecc0c5c | 509 | backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), |
f2470371 | 510 | MAX_INLINE_DATA(dir), GFP_F2FS_ZERO); |
8975bdf4 CY |
511 | if (!backup_dentry) { |
512 | f2fs_put_page(ipage, 1); | |
675f10bd | 513 | return -ENOMEM; |
8975bdf4 | 514 | } |
675f10bd | 515 | |
f2470371 | 516 | memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir)); |
4d57b86d | 517 | f2fs_truncate_inline_inode(dir, ipage, 0); |
675f10bd CY |
518 | |
519 | unlock_page(ipage); | |
520 | ||
521 | err = f2fs_add_inline_entries(dir, backup_dentry); | |
522 | if (err) | |
523 | goto recover; | |
524 | ||
525 | lock_page(ipage); | |
526 | ||
527 | stat_dec_inline_dir(dir); | |
91942321 | 528 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
45a74688 CY |
529 | |
530 | /* | |
531 | * should retrieve reserved space which was used to keep | |
532 | * inline_dentry's structure for backward compatibility. | |
533 | */ | |
534 | if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && | |
535 | !f2fs_has_inline_xattr(dir)) | |
536 | F2FS_I(dir)->i_inline_xattr_size = 0; | |
537 | ||
c8eb7024 | 538 | kfree(backup_dentry); |
675f10bd CY |
539 | return 0; |
540 | recover: | |
541 | lock_page(ipage); | |
bae0ee7a | 542 | f2fs_wait_on_page_writeback(ipage, NODE, true, true); |
f2470371 | 543 | memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir)); |
205b9822 | 544 | f2fs_i_depth_write(dir, 0); |
f2470371 | 545 | f2fs_i_size_write(dir, MAX_INLINE_DATA(dir)); |
ee6d182f | 546 | set_page_dirty(ipage); |
675f10bd CY |
547 | f2fs_put_page(ipage, 1); |
548 | ||
c8eb7024 | 549 | kfree(backup_dentry); |
675f10bd CY |
550 | return err; |
551 | } | |
552 | ||
b06af2af | 553 | static int do_convert_inline_dir(struct inode *dir, struct page *ipage, |
f2470371 | 554 | void *inline_dentry) |
675f10bd CY |
555 | { |
556 | if (!F2FS_I(dir)->i_dir_level) | |
557 | return f2fs_move_inline_dirents(dir, ipage, inline_dentry); | |
558 | else | |
559 | return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry); | |
560 | } | |
561 | ||
b06af2af JK |
562 | int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry) |
563 | { | |
564 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
565 | struct page *ipage; | |
43c780ba | 566 | struct f2fs_filename fname; |
b06af2af JK |
567 | void *inline_dentry = NULL; |
568 | int err = 0; | |
569 | ||
570 | if (!f2fs_has_inline_dentry(dir)) | |
571 | return 0; | |
572 | ||
573 | f2fs_lock_op(sbi); | |
574 | ||
43c780ba | 575 | err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname); |
b06af2af JK |
576 | if (err) |
577 | goto out; | |
578 | ||
579 | ipage = f2fs_get_node_page(sbi, dir->i_ino); | |
580 | if (IS_ERR(ipage)) { | |
581 | err = PTR_ERR(ipage); | |
ff5f85c8 | 582 | goto out_fname; |
b06af2af JK |
583 | } |
584 | ||
585 | if (f2fs_has_enough_room(dir, ipage, &fname)) { | |
586 | f2fs_put_page(ipage, 1); | |
ff5f85c8 | 587 | goto out_fname; |
b06af2af JK |
588 | } |
589 | ||
590 | inline_dentry = inline_data_addr(dir, ipage); | |
591 | ||
592 | err = do_convert_inline_dir(dir, ipage, inline_dentry); | |
593 | if (!err) | |
594 | f2fs_put_page(ipage, 1); | |
ff5f85c8 | 595 | out_fname: |
43c780ba | 596 | f2fs_free_filename(&fname); |
b06af2af JK |
597 | out: |
598 | f2fs_unlock_op(sbi); | |
599 | return err; | |
600 | } | |
601 | ||
43c780ba EB |
602 | int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, |
603 | struct inode *inode, nid_t ino, umode_t mode) | |
201a05be CY |
604 | { |
605 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
606 | struct page *ipage; | |
607 | unsigned int bit_pos; | |
f2470371 | 608 | void *inline_dentry = NULL; |
3b4d732a | 609 | struct f2fs_dentry_ptr d; |
43c780ba | 610 | int slots = GET_DENTRY_SLOTS(fname->disk_name.len); |
510022a8 | 611 | struct page *page = NULL; |
201a05be | 612 | int err = 0; |
201a05be | 613 | |
4d57b86d | 614 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
201a05be CY |
615 | if (IS_ERR(ipage)) |
616 | return PTR_ERR(ipage); | |
617 | ||
f2470371 CY |
618 | inline_dentry = inline_data_addr(dir, ipage); |
619 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 | 620 | |
4d57b86d | 621 | bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max); |
76a9dd85 | 622 | if (bit_pos >= d.max) { |
b06af2af | 623 | err = do_convert_inline_dir(dir, ipage, inline_dentry); |
470f00e9 CY |
624 | if (err) |
625 | return err; | |
626 | err = -EAGAIN; | |
201a05be CY |
627 | goto out; |
628 | } | |
629 | ||
510022a8 JK |
630 | if (inode) { |
631 | down_write(&F2FS_I(inode)->i_sem); | |
43c780ba | 632 | page = f2fs_init_inode_metadata(inode, dir, fname, ipage); |
510022a8 JK |
633 | if (IS_ERR(page)) { |
634 | err = PTR_ERR(page); | |
635 | goto fail; | |
636 | } | |
201a05be | 637 | } |
bce8d112 | 638 | |
bae0ee7a | 639 | f2fs_wait_on_page_writeback(ipage, NODE, true, true); |
3b4d732a | 640 | |
43c780ba EB |
641 | f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash, |
642 | bit_pos); | |
3b4d732a | 643 | |
201a05be CY |
644 | set_page_dirty(ipage); |
645 | ||
646 | /* we don't need to mark_inode_dirty now */ | |
510022a8 | 647 | if (inode) { |
205b9822 | 648 | f2fs_i_pino_write(inode, dir->i_ino); |
98194030 CY |
649 | |
650 | /* synchronize inode page's data from inode cache */ | |
651 | if (is_inode_flag_set(inode, FI_NEW_INODE)) | |
652 | f2fs_update_inode(inode, page); | |
653 | ||
510022a8 JK |
654 | f2fs_put_page(page, 1); |
655 | } | |
201a05be | 656 | |
4d57b86d | 657 | f2fs_update_parent_metadata(dir, inode, 0); |
201a05be | 658 | fail: |
510022a8 JK |
659 | if (inode) |
660 | up_write(&F2FS_I(inode)->i_sem); | |
201a05be CY |
661 | out: |
662 | f2fs_put_page(ipage, 1); | |
663 | return err; | |
664 | } | |
665 | ||
666 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, | |
667 | struct inode *dir, struct inode *inode) | |
668 | { | |
76a9dd85 | 669 | struct f2fs_dentry_ptr d; |
f2470371 | 670 | void *inline_dentry; |
201a05be CY |
671 | int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); |
672 | unsigned int bit_pos; | |
673 | int i; | |
674 | ||
675 | lock_page(page); | |
bae0ee7a | 676 | f2fs_wait_on_page_writeback(page, NODE, true, true); |
201a05be | 677 | |
f2470371 CY |
678 | inline_dentry = inline_data_addr(dir, page); |
679 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 CY |
680 | |
681 | bit_pos = dentry - d.dentry; | |
201a05be | 682 | for (i = 0; i < slots; i++) |
76a9dd85 | 683 | __clear_bit_le(bit_pos + i, d.bitmap); |
201a05be CY |
684 | |
685 | set_page_dirty(page); | |
9f7c45cc | 686 | f2fs_put_page(page, 1); |
201a05be | 687 | |
078cd827 | 688 | dir->i_ctime = dir->i_mtime = current_time(dir); |
7c45729a | 689 | f2fs_mark_inode_dirty_sync(dir, false); |
201a05be CY |
690 | |
691 | if (inode) | |
9f7c45cc | 692 | f2fs_drop_nlink(dir, inode); |
201a05be CY |
693 | } |
694 | ||
695 | bool f2fs_empty_inline_dir(struct inode *dir) | |
696 | { | |
697 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
698 | struct page *ipage; | |
699 | unsigned int bit_pos = 2; | |
f2470371 | 700 | void *inline_dentry; |
76a9dd85 | 701 | struct f2fs_dentry_ptr d; |
201a05be | 702 | |
4d57b86d | 703 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
201a05be CY |
704 | if (IS_ERR(ipage)) |
705 | return false; | |
706 | ||
f2470371 CY |
707 | inline_dentry = inline_data_addr(dir, ipage); |
708 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 CY |
709 | |
710 | bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos); | |
201a05be CY |
711 | |
712 | f2fs_put_page(ipage, 1); | |
713 | ||
76a9dd85 | 714 | if (bit_pos < d.max) |
201a05be CY |
715 | return false; |
716 | ||
717 | return true; | |
718 | } | |
719 | ||
d8c6822a | 720 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, |
0b81d077 | 721 | struct fscrypt_str *fstr) |
201a05be CY |
722 | { |
723 | struct inode *inode = file_inode(file); | |
201a05be | 724 | struct page *ipage = NULL; |
7b3cd7d6 | 725 | struct f2fs_dentry_ptr d; |
f2470371 | 726 | void *inline_dentry = NULL; |
ed6bd4b1 | 727 | int err; |
201a05be | 728 | |
76a9dd85 CY |
729 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
730 | ||
731 | if (ctx->pos == d.max) | |
201a05be CY |
732 | return 0; |
733 | ||
4d57b86d | 734 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
201a05be CY |
735 | if (IS_ERR(ipage)) |
736 | return PTR_ERR(ipage); | |
737 | ||
aadcef64 CY |
738 | /* |
739 | * f2fs_readdir was protected by inode.i_rwsem, it is safe to access | |
740 | * ipage without page's lock held. | |
741 | */ | |
742 | unlock_page(ipage); | |
743 | ||
f2470371 | 744 | inline_dentry = inline_data_addr(inode, ipage); |
201a05be | 745 | |
64c24ecb | 746 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
7b3cd7d6 | 747 | |
ed6bd4b1 CY |
748 | err = f2fs_fill_dentries(ctx, &d, 0, fstr); |
749 | if (!err) | |
76a9dd85 | 750 | ctx->pos = d.max; |
201a05be | 751 | |
aadcef64 | 752 | f2fs_put_page(ipage, 0); |
ed6bd4b1 | 753 | return err < 0 ? err : 0; |
201a05be | 754 | } |
67f8cf3c JK |
755 | |
756 | int f2fs_inline_data_fiemap(struct inode *inode, | |
757 | struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) | |
758 | { | |
759 | __u64 byteaddr, ilen; | |
760 | __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | | |
761 | FIEMAP_EXTENT_LAST; | |
762 | struct node_info ni; | |
763 | struct page *ipage; | |
764 | int err = 0; | |
765 | ||
4d57b86d | 766 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
67f8cf3c JK |
767 | if (IS_ERR(ipage)) |
768 | return PTR_ERR(ipage); | |
769 | ||
7975f349 CY |
770 | if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) && |
771 | !f2fs_has_inline_data(inode)) { | |
772 | err = -EAGAIN; | |
773 | goto out; | |
774 | } | |
775 | ||
776 | if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) { | |
67f8cf3c JK |
777 | err = -EAGAIN; |
778 | goto out; | |
779 | } | |
780 | ||
f2470371 | 781 | ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode)); |
67f8cf3c JK |
782 | if (start >= ilen) |
783 | goto out; | |
784 | if (start + len < ilen) | |
785 | ilen = start + len; | |
786 | ilen -= start; | |
787 | ||
7735730d CY |
788 | err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); |
789 | if (err) | |
790 | goto out; | |
791 | ||
67f8cf3c | 792 | byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; |
f2470371 CY |
793 | byteaddr += (char *)inline_data_addr(inode, ipage) - |
794 | (char *)F2FS_INODE(ipage); | |
67f8cf3c | 795 | err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); |
dd5a09bd | 796 | trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err); |
67f8cf3c JK |
797 | out: |
798 | f2fs_put_page(ipage, 1); | |
799 | return err; | |
800 | } |