Commit | Line | Data |
---|---|---|
e18c65b2 HL |
1 | /* |
2 | * fs/f2fs/inline.c | |
3 | * Copyright (c) 2013, Intel Corporation | |
4 | * Authors: Huajun Li <huajun.li@intel.com> | |
5 | * Haicheng Li <haicheng.li@intel.com> | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | ||
14 | #include "f2fs.h" | |
67f8cf3c | 15 | #include "node.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 | ||
92dffd01 JK |
25 | if (i_size_read(inode) > MAX_INLINE_DATA) |
26 | return false; | |
27 | ||
fcc85a4d JK |
28 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) |
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 | ||
b3d208f9 | 45 | void read_inline_data(struct page *page, struct page *ipage) |
e18c65b2 | 46 | { |
e18c65b2 HL |
47 | void *src_addr, *dst_addr; |
48 | ||
b3d208f9 JK |
49 | if (PageUptodate(page)) |
50 | return; | |
04a17fb1 | 51 | |
b3d208f9 | 52 | f2fs_bug_on(F2FS_P_SB(page), page->index); |
e18c65b2 | 53 | |
18309aaa | 54 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE); |
e18c65b2 HL |
55 | |
56 | /* Copy the whole inline data block */ | |
57 | src_addr = inline_data_addr(ipage); | |
f1e33a04 | 58 | dst_addr = kmap_atomic(page); |
e18c65b2 | 59 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); |
427a45c8 | 60 | flush_dcache_page(page); |
f1e33a04 | 61 | kunmap_atomic(dst_addr); |
e18c65b2 | 62 | SetPageUptodate(page); |
b3d208f9 JK |
63 | } |
64 | ||
0bfcfcca | 65 | bool truncate_inline_inode(struct page *ipage, u64 from) |
feeb0deb | 66 | { |
0bfcfcca CY |
67 | void *addr; |
68 | ||
0bfcfcca CY |
69 | if (from >= MAX_INLINE_DATA) |
70 | return false; | |
71 | ||
72 | addr = inline_data_addr(ipage); | |
73 | ||
feeb0deb | 74 | f2fs_wait_on_page_writeback(ipage, NODE); |
0bfcfcca CY |
75 | memset(addr + from, 0, MAX_INLINE_DATA - from); |
76 | ||
77 | return true; | |
feeb0deb CY |
78 | } |
79 | ||
b3d208f9 JK |
80 | int f2fs_read_inline_data(struct inode *inode, struct page *page) |
81 | { | |
82 | struct page *ipage; | |
83 | ||
84 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); | |
85 | if (IS_ERR(ipage)) { | |
86 | unlock_page(page); | |
87 | return PTR_ERR(ipage); | |
88 | } | |
e18c65b2 | 89 | |
b3d208f9 JK |
90 | if (!f2fs_has_inline_data(inode)) { |
91 | f2fs_put_page(ipage, 1); | |
92 | return -EAGAIN; | |
93 | } | |
94 | ||
95 | if (page->index) | |
96 | zero_user_segment(page, 0, PAGE_CACHE_SIZE); | |
97 | else | |
98 | read_inline_data(page, ipage); | |
99 | ||
100 | SetPageUptodate(page); | |
101 | f2fs_put_page(ipage, 1); | |
102 | unlock_page(page); | |
e18c65b2 HL |
103 | return 0; |
104 | } | |
105 | ||
b3d208f9 | 106 | int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) |
e18c65b2 | 107 | { |
e18c65b2 | 108 | void *src_addr, *dst_addr; |
e18c65b2 | 109 | struct f2fs_io_info fio = { |
05ca3632 | 110 | .sbi = F2FS_I_SB(dn->inode), |
e18c65b2 HL |
111 | .type = DATA, |
112 | .rw = WRITE_SYNC | REQ_PRIO, | |
05ca3632 | 113 | .page = page, |
4375a336 | 114 | .encrypted_page = NULL, |
e18c65b2 | 115 | }; |
158c194c | 116 | int dirty, err; |
e18c65b2 | 117 | |
b3d208f9 | 118 | f2fs_bug_on(F2FS_I_SB(dn->inode), page->index); |
e18c65b2 | 119 | |
b3d208f9 JK |
120 | if (!f2fs_exist_data(dn->inode)) |
121 | goto clear_out; | |
ec4e7af4 | 122 | |
b3d208f9 | 123 | err = f2fs_reserve_block(dn, 0); |
15c6e3aa | 124 | if (err) |
b3d208f9 | 125 | return err; |
e18c65b2 | 126 | |
9ac1349a | 127 | f2fs_wait_on_page_writeback(page, DATA); |
b3d208f9 JK |
128 | |
129 | if (PageUptodate(page)) | |
130 | goto no_update; | |
131 | ||
18309aaa | 132 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE); |
e18c65b2 HL |
133 | |
134 | /* Copy the whole inline data block */ | |
b3d208f9 | 135 | src_addr = inline_data_addr(dn->inode_page); |
f1e33a04 | 136 | dst_addr = kmap_atomic(page); |
e18c65b2 | 137 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); |
09b8b3c8 | 138 | flush_dcache_page(page); |
f1e33a04 | 139 | kunmap_atomic(dst_addr); |
9e09fc85 | 140 | SetPageUptodate(page); |
b3d208f9 | 141 | no_update: |
6282adbf JK |
142 | set_page_dirty(page); |
143 | ||
158c194c JK |
144 | /* clear dirty state */ |
145 | dirty = clear_page_dirty_for_io(page); | |
146 | ||
e18c65b2 HL |
147 | /* write data page to try to make data consistent */ |
148 | set_page_writeback(page); | |
cf04e8eb | 149 | fio.blk_addr = dn->data_blkaddr; |
05ca3632 | 150 | write_data_page(dn, &fio); |
216a620a | 151 | set_data_blkaddr(dn); |
7e4dde79 | 152 | f2fs_update_extent_cache(dn); |
5514f0aa | 153 | f2fs_wait_on_page_writeback(page, DATA); |
158c194c JK |
154 | if (dirty) |
155 | inode_dec_dirty_pages(dn->inode); | |
e18c65b2 | 156 | |
95f5b0fc JK |
157 | /* this converted inline_data should be recovered. */ |
158 | set_inode_flag(F2FS_I(dn->inode), FI_APPEND_WRITE); | |
159 | ||
e18c65b2 | 160 | /* clear inline data and flag after data writeback */ |
0bfcfcca | 161 | truncate_inline_inode(dn->inode_page, 0); |
b3d208f9 | 162 | clear_out: |
b3d208f9 | 163 | stat_dec_inline_inode(dn->inode); |
57e2a2c0 | 164 | f2fs_clear_inline_inode(dn->inode); |
b3d208f9 JK |
165 | sync_inode_page(dn); |
166 | f2fs_put_dnode(dn); | |
167 | return 0; | |
e18c65b2 HL |
168 | } |
169 | ||
b3d208f9 | 170 | int f2fs_convert_inline_inode(struct inode *inode) |
e18c65b2 | 171 | { |
b3d208f9 JK |
172 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
173 | struct dnode_of_data dn; | |
174 | struct page *ipage, *page; | |
175 | int err = 0; | |
e18c65b2 | 176 | |
b9d777b8 JK |
177 | if (!f2fs_has_inline_data(inode)) |
178 | return 0; | |
179 | ||
b3d208f9 JK |
180 | page = grab_cache_page(inode->i_mapping, 0); |
181 | if (!page) | |
182 | return -ENOMEM; | |
e18c65b2 | 183 | |
b3d208f9 JK |
184 | f2fs_lock_op(sbi); |
185 | ||
186 | ipage = get_node_page(sbi, inode->i_ino); | |
187 | if (IS_ERR(ipage)) { | |
6d20aff8 JK |
188 | err = PTR_ERR(ipage); |
189 | goto out; | |
b067ba1f | 190 | } |
e18c65b2 | 191 | |
b3d208f9 JK |
192 | set_new_dnode(&dn, inode, ipage, ipage, 0); |
193 | ||
194 | if (f2fs_has_inline_data(inode)) | |
195 | err = f2fs_convert_inline_page(&dn, page); | |
196 | ||
197 | f2fs_put_dnode(&dn); | |
6d20aff8 | 198 | out: |
b3d208f9 JK |
199 | f2fs_unlock_op(sbi); |
200 | ||
201 | f2fs_put_page(page, 1); | |
2a340760 | 202 | |
2c4db1a6 | 203 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 204 | |
e18c65b2 HL |
205 | return err; |
206 | } | |
207 | ||
b3d208f9 | 208 | int f2fs_write_inline_data(struct inode *inode, struct page *page) |
e18c65b2 HL |
209 | { |
210 | void *src_addr, *dst_addr; | |
e18c65b2 HL |
211 | struct dnode_of_data dn; |
212 | int err; | |
213 | ||
214 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
215 | err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); | |
216 | if (err) | |
217 | return err; | |
e18c65b2 | 218 | |
c08a690b | 219 | if (!f2fs_has_inline_data(inode)) { |
b3d208f9 JK |
220 | f2fs_put_dnode(&dn); |
221 | return -EAGAIN; | |
c08a690b JK |
222 | } |
223 | ||
b3d208f9 JK |
224 | f2fs_bug_on(F2FS_I_SB(inode), page->index); |
225 | ||
226 | f2fs_wait_on_page_writeback(dn.inode_page, NODE); | |
f1e33a04 | 227 | src_addr = kmap_atomic(page); |
b3d208f9 JK |
228 | dst_addr = inline_data_addr(dn.inode_page); |
229 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); | |
f1e33a04 | 230 | kunmap_atomic(src_addr); |
e18c65b2 | 231 | |
fff04f90 | 232 | set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE); |
b3d208f9 JK |
233 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); |
234 | ||
e18c65b2 HL |
235 | sync_inode_page(&dn); |
236 | f2fs_put_dnode(&dn); | |
e18c65b2 HL |
237 | return 0; |
238 | } | |
1e1bb4ba | 239 | |
0342fd30 | 240 | bool recover_inline_data(struct inode *inode, struct page *npage) |
1e1bb4ba | 241 | { |
4081363f | 242 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1e1bb4ba JK |
243 | struct f2fs_inode *ri = NULL; |
244 | void *src_addr, *dst_addr; | |
245 | struct page *ipage; | |
246 | ||
247 | /* | |
248 | * The inline_data recovery policy is as follows. | |
249 | * [prev.] [next] of inline_data flag | |
250 | * o o -> recover inline_data | |
251 | * o x -> remove inline_data, and then recover data blocks | |
252 | * x o -> remove inline_data, and then recover inline_data | |
253 | * x x -> recover data blocks | |
254 | */ | |
255 | if (IS_INODE(npage)) | |
256 | ri = F2FS_INODE(npage); | |
257 | ||
258 | if (f2fs_has_inline_data(inode) && | |
0342fd30 | 259 | ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
1e1bb4ba JK |
260 | process_inline: |
261 | ipage = get_node_page(sbi, inode->i_ino); | |
9850cf4a | 262 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
1e1bb4ba | 263 | |
54b591df JK |
264 | f2fs_wait_on_page_writeback(ipage, NODE); |
265 | ||
1e1bb4ba JK |
266 | src_addr = inline_data_addr(npage); |
267 | dst_addr = inline_data_addr(ipage); | |
268 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); | |
b3d208f9 JK |
269 | |
270 | set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); | |
271 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); | |
272 | ||
1e1bb4ba JK |
273 | update_inode(inode, ipage); |
274 | f2fs_put_page(ipage, 1); | |
0342fd30 | 275 | return true; |
1e1bb4ba JK |
276 | } |
277 | ||
278 | if (f2fs_has_inline_data(inode)) { | |
279 | ipage = get_node_page(sbi, inode->i_ino); | |
9850cf4a | 280 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
545fe421 NK |
281 | if (!truncate_inline_inode(ipage, 0)) |
282 | return false; | |
b3d208f9 | 283 | f2fs_clear_inline_inode(inode); |
1e1bb4ba JK |
284 | update_inode(inode, ipage); |
285 | f2fs_put_page(ipage, 1); | |
0342fd30 | 286 | } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
545fe421 NK |
287 | if (truncate_blocks(inode, 0, false)) |
288 | return false; | |
1e1bb4ba JK |
289 | goto process_inline; |
290 | } | |
0342fd30 | 291 | return false; |
1e1bb4ba | 292 | } |
201a05be CY |
293 | |
294 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, | |
6e22c691 | 295 | struct f2fs_filename *fname, struct page **res_page) |
201a05be CY |
296 | { |
297 | struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); | |
4e6ebf6d | 298 | struct f2fs_inline_dentry *inline_dentry; |
6e22c691 | 299 | struct qstr name = FSTR_TO_QSTR(&fname->disk_name); |
201a05be | 300 | struct f2fs_dir_entry *de; |
7b3cd7d6 | 301 | struct f2fs_dentry_ptr d; |
4e6ebf6d | 302 | struct page *ipage; |
6e22c691 | 303 | f2fs_hash_t namehash; |
201a05be CY |
304 | |
305 | ipage = get_node_page(sbi, dir->i_ino); | |
306 | if (IS_ERR(ipage)) | |
307 | return NULL; | |
308 | ||
6e22c691 JK |
309 | namehash = f2fs_dentry_hash(&name); |
310 | ||
4e6ebf6d | 311 | inline_dentry = inline_data_addr(ipage); |
201a05be | 312 | |
d8c6822a | 313 | make_dentry_ptr(NULL, &d, (void *)inline_dentry, 2); |
6e22c691 | 314 | de = find_target_dentry(fname, namehash, NULL, &d); |
201a05be | 315 | unlock_page(ipage); |
4e6ebf6d JK |
316 | if (de) |
317 | *res_page = ipage; | |
318 | else | |
319 | f2fs_put_page(ipage, 0); | |
320 | ||
321 | /* | |
322 | * For the most part, it should be a bug when name_len is zero. | |
323 | * We stop here for figuring out where the bugs has occurred. | |
324 | */ | |
7b3cd7d6 | 325 | f2fs_bug_on(sbi, d.max < 0); |
201a05be CY |
326 | return de; |
327 | } | |
328 | ||
329 | struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *dir, | |
330 | struct page **p) | |
331 | { | |
332 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
333 | struct page *ipage; | |
334 | struct f2fs_dir_entry *de; | |
335 | struct f2fs_inline_dentry *dentry_blk; | |
336 | ||
337 | ipage = get_node_page(sbi, dir->i_ino); | |
338 | if (IS_ERR(ipage)) | |
339 | return NULL; | |
340 | ||
341 | dentry_blk = inline_data_addr(ipage); | |
342 | de = &dentry_blk->dentry[1]; | |
343 | *p = ipage; | |
344 | unlock_page(ipage); | |
345 | return de; | |
346 | } | |
347 | ||
348 | int make_empty_inline_dir(struct inode *inode, struct inode *parent, | |
349 | struct page *ipage) | |
350 | { | |
351 | struct f2fs_inline_dentry *dentry_blk; | |
062a3e7b | 352 | struct f2fs_dentry_ptr d; |
201a05be CY |
353 | |
354 | dentry_blk = inline_data_addr(ipage); | |
355 | ||
d8c6822a | 356 | make_dentry_ptr(NULL, &d, (void *)dentry_blk, 2); |
062a3e7b | 357 | do_make_empty_dir(inode, parent, &d); |
201a05be CY |
358 | |
359 | set_page_dirty(ipage); | |
360 | ||
361 | /* update i_size to MAX_INLINE_DATA */ | |
362 | if (i_size_read(inode) < MAX_INLINE_DATA) { | |
363 | i_size_write(inode, MAX_INLINE_DATA); | |
364 | set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR); | |
365 | } | |
366 | return 0; | |
367 | } | |
368 | ||
470f00e9 CY |
369 | /* |
370 | * NOTE: ipage is grabbed by caller, but if any error occurs, we should | |
371 | * release ipage in this function. | |
372 | */ | |
d64948a4 | 373 | static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage, |
201a05be CY |
374 | struct f2fs_inline_dentry *inline_dentry) |
375 | { | |
376 | struct page *page; | |
377 | struct dnode_of_data dn; | |
378 | struct f2fs_dentry_block *dentry_blk; | |
379 | int err; | |
380 | ||
381 | page = grab_cache_page(dir->i_mapping, 0); | |
470f00e9 CY |
382 | if (!page) { |
383 | f2fs_put_page(ipage, 1); | |
201a05be | 384 | return -ENOMEM; |
470f00e9 | 385 | } |
201a05be CY |
386 | |
387 | set_new_dnode(&dn, dir, ipage, NULL, 0); | |
388 | err = f2fs_reserve_block(&dn, 0); | |
389 | if (err) | |
390 | goto out; | |
391 | ||
392 | f2fs_wait_on_page_writeback(page, DATA); | |
4ec17d68 | 393 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE); |
201a05be | 394 | |
f1e33a04 | 395 | dentry_blk = kmap_atomic(page); |
201a05be CY |
396 | |
397 | /* copy data from inline dentry block to new dentry block */ | |
398 | memcpy(dentry_blk->dentry_bitmap, inline_dentry->dentry_bitmap, | |
399 | INLINE_DENTRY_BITMAP_SIZE); | |
4ec17d68 CY |
400 | memset(dentry_blk->dentry_bitmap + INLINE_DENTRY_BITMAP_SIZE, 0, |
401 | SIZE_OF_DENTRY_BITMAP - INLINE_DENTRY_BITMAP_SIZE); | |
402 | /* | |
403 | * we do not need to zero out remainder part of dentry and filename | |
404 | * field, since we have used bitmap for marking the usage status of | |
405 | * them, besides, we can also ignore copying/zeroing reserved space | |
406 | * of dentry block, because them haven't been used so far. | |
407 | */ | |
201a05be CY |
408 | memcpy(dentry_blk->dentry, inline_dentry->dentry, |
409 | sizeof(struct f2fs_dir_entry) * NR_INLINE_DENTRY); | |
410 | memcpy(dentry_blk->filename, inline_dentry->filename, | |
411 | NR_INLINE_DENTRY * F2FS_SLOT_LEN); | |
412 | ||
f1e33a04 | 413 | kunmap_atomic(dentry_blk); |
201a05be CY |
414 | SetPageUptodate(page); |
415 | set_page_dirty(page); | |
416 | ||
417 | /* clear inline dir and flag after data writeback */ | |
0bfcfcca | 418 | truncate_inline_inode(ipage, 0); |
b3d208f9 | 419 | |
3289c061 | 420 | stat_dec_inline_dir(dir); |
622f28ae | 421 | clear_inode_flag(F2FS_I(dir), FI_INLINE_DENTRY); |
201a05be CY |
422 | |
423 | if (i_size_read(dir) < PAGE_CACHE_SIZE) { | |
424 | i_size_write(dir, PAGE_CACHE_SIZE); | |
425 | set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); | |
426 | } | |
427 | ||
428 | sync_inode_page(&dn); | |
429 | out: | |
430 | f2fs_put_page(page, 1); | |
431 | return err; | |
432 | } | |
433 | ||
434 | int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name, | |
510022a8 | 435 | struct inode *inode, nid_t ino, umode_t mode) |
201a05be CY |
436 | { |
437 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
438 | struct page *ipage; | |
439 | unsigned int bit_pos; | |
440 | f2fs_hash_t name_hash; | |
201a05be CY |
441 | size_t namelen = name->len; |
442 | struct f2fs_inline_dentry *dentry_blk = NULL; | |
3b4d732a | 443 | struct f2fs_dentry_ptr d; |
201a05be | 444 | int slots = GET_DENTRY_SLOTS(namelen); |
510022a8 | 445 | struct page *page = NULL; |
201a05be | 446 | int err = 0; |
201a05be CY |
447 | |
448 | ipage = get_node_page(sbi, dir->i_ino); | |
449 | if (IS_ERR(ipage)) | |
450 | return PTR_ERR(ipage); | |
451 | ||
452 | dentry_blk = inline_data_addr(ipage); | |
a82afa20 JK |
453 | bit_pos = room_for_filename(&dentry_blk->dentry_bitmap, |
454 | slots, NR_INLINE_DENTRY); | |
201a05be CY |
455 | if (bit_pos >= NR_INLINE_DENTRY) { |
456 | err = f2fs_convert_inline_dir(dir, ipage, dentry_blk); | |
470f00e9 CY |
457 | if (err) |
458 | return err; | |
459 | err = -EAGAIN; | |
201a05be CY |
460 | goto out; |
461 | } | |
462 | ||
510022a8 JK |
463 | if (inode) { |
464 | down_write(&F2FS_I(inode)->i_sem); | |
465 | page = init_inode_metadata(inode, dir, name, ipage); | |
466 | if (IS_ERR(page)) { | |
467 | err = PTR_ERR(page); | |
468 | goto fail; | |
469 | } | |
201a05be | 470 | } |
bce8d112 JK |
471 | |
472 | f2fs_wait_on_page_writeback(ipage, NODE); | |
3b4d732a CY |
473 | |
474 | name_hash = f2fs_dentry_hash(name); | |
d8c6822a | 475 | make_dentry_ptr(NULL, &d, (void *)dentry_blk, 2); |
510022a8 | 476 | f2fs_update_dentry(ino, mode, &d, name, name_hash, bit_pos); |
3b4d732a | 477 | |
201a05be CY |
478 | set_page_dirty(ipage); |
479 | ||
480 | /* we don't need to mark_inode_dirty now */ | |
510022a8 JK |
481 | if (inode) { |
482 | F2FS_I(inode)->i_pino = dir->i_ino; | |
483 | update_inode(inode, page); | |
484 | f2fs_put_page(page, 1); | |
485 | } | |
201a05be CY |
486 | |
487 | update_parent_metadata(dir, inode, 0); | |
488 | fail: | |
510022a8 JK |
489 | if (inode) |
490 | up_write(&F2FS_I(inode)->i_sem); | |
201a05be CY |
491 | |
492 | if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) { | |
493 | update_inode(dir, ipage); | |
494 | clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); | |
495 | } | |
496 | out: | |
497 | f2fs_put_page(ipage, 1); | |
498 | return err; | |
499 | } | |
500 | ||
501 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, | |
502 | struct inode *dir, struct inode *inode) | |
503 | { | |
504 | struct f2fs_inline_dentry *inline_dentry; | |
505 | int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); | |
506 | unsigned int bit_pos; | |
507 | int i; | |
508 | ||
509 | lock_page(page); | |
59a06155 | 510 | f2fs_wait_on_page_writeback(page, NODE); |
201a05be CY |
511 | |
512 | inline_dentry = inline_data_addr(page); | |
513 | bit_pos = dentry - inline_dentry->dentry; | |
514 | for (i = 0; i < slots; i++) | |
515 | test_and_clear_bit_le(bit_pos + i, | |
516 | &inline_dentry->dentry_bitmap); | |
517 | ||
518 | set_page_dirty(page); | |
519 | ||
520 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; | |
521 | ||
522 | if (inode) | |
523 | f2fs_drop_nlink(dir, inode, page); | |
524 | ||
525 | f2fs_put_page(page, 1); | |
526 | } | |
527 | ||
528 | bool f2fs_empty_inline_dir(struct inode *dir) | |
529 | { | |
530 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
531 | struct page *ipage; | |
532 | unsigned int bit_pos = 2; | |
533 | struct f2fs_inline_dentry *dentry_blk; | |
534 | ||
535 | ipage = get_node_page(sbi, dir->i_ino); | |
536 | if (IS_ERR(ipage)) | |
537 | return false; | |
538 | ||
539 | dentry_blk = inline_data_addr(ipage); | |
540 | bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, | |
541 | NR_INLINE_DENTRY, | |
542 | bit_pos); | |
543 | ||
544 | f2fs_put_page(ipage, 1); | |
545 | ||
546 | if (bit_pos < NR_INLINE_DENTRY) | |
547 | return false; | |
548 | ||
549 | return true; | |
550 | } | |
551 | ||
d8c6822a JK |
552 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, |
553 | struct f2fs_str *fstr) | |
201a05be CY |
554 | { |
555 | struct inode *inode = file_inode(file); | |
201a05be | 556 | struct f2fs_inline_dentry *inline_dentry = NULL; |
201a05be | 557 | struct page *ipage = NULL; |
7b3cd7d6 | 558 | struct f2fs_dentry_ptr d; |
201a05be CY |
559 | |
560 | if (ctx->pos == NR_INLINE_DENTRY) | |
561 | return 0; | |
562 | ||
38594de7 | 563 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
201a05be CY |
564 | if (IS_ERR(ipage)) |
565 | return PTR_ERR(ipage); | |
566 | ||
201a05be | 567 | inline_dentry = inline_data_addr(ipage); |
201a05be | 568 | |
d8c6822a | 569 | make_dentry_ptr(inode, &d, (void *)inline_dentry, 2); |
7b3cd7d6 | 570 | |
d8c6822a | 571 | if (!f2fs_fill_dentries(ctx, &d, 0, fstr)) |
38594de7 | 572 | ctx->pos = NR_INLINE_DENTRY; |
201a05be | 573 | |
38594de7 | 574 | f2fs_put_page(ipage, 1); |
201a05be CY |
575 | return 0; |
576 | } | |
67f8cf3c JK |
577 | |
578 | int f2fs_inline_data_fiemap(struct inode *inode, | |
579 | struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) | |
580 | { | |
581 | __u64 byteaddr, ilen; | |
582 | __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | | |
583 | FIEMAP_EXTENT_LAST; | |
584 | struct node_info ni; | |
585 | struct page *ipage; | |
586 | int err = 0; | |
587 | ||
588 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); | |
589 | if (IS_ERR(ipage)) | |
590 | return PTR_ERR(ipage); | |
591 | ||
592 | if (!f2fs_has_inline_data(inode)) { | |
593 | err = -EAGAIN; | |
594 | goto out; | |
595 | } | |
596 | ||
597 | ilen = min_t(size_t, MAX_INLINE_DATA, i_size_read(inode)); | |
598 | if (start >= ilen) | |
599 | goto out; | |
600 | if (start + len < ilen) | |
601 | ilen = start + len; | |
602 | ilen -= start; | |
603 | ||
604 | get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); | |
605 | byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; | |
606 | byteaddr += (char *)inline_data_addr(ipage) - (char *)F2FS_INODE(ipage); | |
607 | err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); | |
608 | out: | |
609 | f2fs_put_page(ipage, 1); | |
610 | return err; | |
611 | } |