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Commit | Line | Data |
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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" | |
15 | ||
e18c65b2 HL |
16 | bool f2fs_may_inline(struct inode *inode) |
17 | { | |
4081363f | 18 | if (!test_opt(F2FS_I_SB(inode), INLINE_DATA)) |
e18c65b2 HL |
19 | return false; |
20 | ||
88b88a66 JK |
21 | if (f2fs_is_atomic_file(inode)) |
22 | return false; | |
23 | ||
368a0e40 | 24 | if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode)) |
e18c65b2 HL |
25 | return false; |
26 | ||
92dffd01 JK |
27 | if (i_size_read(inode) > MAX_INLINE_DATA) |
28 | return false; | |
29 | ||
e18c65b2 HL |
30 | return true; |
31 | } | |
32 | ||
b3d208f9 | 33 | void read_inline_data(struct page *page, struct page *ipage) |
e18c65b2 | 34 | { |
e18c65b2 HL |
35 | void *src_addr, *dst_addr; |
36 | ||
b3d208f9 JK |
37 | if (PageUptodate(page)) |
38 | return; | |
04a17fb1 | 39 | |
b3d208f9 | 40 | f2fs_bug_on(F2FS_P_SB(page), page->index); |
e18c65b2 | 41 | |
18309aaa | 42 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE); |
e18c65b2 HL |
43 | |
44 | /* Copy the whole inline data block */ | |
45 | src_addr = inline_data_addr(ipage); | |
f1e33a04 | 46 | dst_addr = kmap_atomic(page); |
e18c65b2 | 47 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); |
427a45c8 | 48 | flush_dcache_page(page); |
f1e33a04 | 49 | kunmap_atomic(dst_addr); |
e18c65b2 | 50 | SetPageUptodate(page); |
b3d208f9 JK |
51 | } |
52 | ||
0bfcfcca | 53 | bool truncate_inline_inode(struct page *ipage, u64 from) |
feeb0deb | 54 | { |
0bfcfcca CY |
55 | void *addr; |
56 | ||
0bfcfcca CY |
57 | if (from >= MAX_INLINE_DATA) |
58 | return false; | |
59 | ||
60 | addr = inline_data_addr(ipage); | |
61 | ||
feeb0deb | 62 | f2fs_wait_on_page_writeback(ipage, NODE); |
0bfcfcca CY |
63 | memset(addr + from, 0, MAX_INLINE_DATA - from); |
64 | ||
65 | return true; | |
feeb0deb CY |
66 | } |
67 | ||
b3d208f9 JK |
68 | int f2fs_read_inline_data(struct inode *inode, struct page *page) |
69 | { | |
70 | struct page *ipage; | |
71 | ||
72 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); | |
73 | if (IS_ERR(ipage)) { | |
74 | unlock_page(page); | |
75 | return PTR_ERR(ipage); | |
76 | } | |
e18c65b2 | 77 | |
b3d208f9 JK |
78 | if (!f2fs_has_inline_data(inode)) { |
79 | f2fs_put_page(ipage, 1); | |
80 | return -EAGAIN; | |
81 | } | |
82 | ||
83 | if (page->index) | |
84 | zero_user_segment(page, 0, PAGE_CACHE_SIZE); | |
85 | else | |
86 | read_inline_data(page, ipage); | |
87 | ||
88 | SetPageUptodate(page); | |
89 | f2fs_put_page(ipage, 1); | |
90 | unlock_page(page); | |
e18c65b2 HL |
91 | return 0; |
92 | } | |
93 | ||
b3d208f9 | 94 | int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) |
e18c65b2 | 95 | { |
e18c65b2 | 96 | void *src_addr, *dst_addr; |
e18c65b2 HL |
97 | struct f2fs_io_info fio = { |
98 | .type = DATA, | |
99 | .rw = WRITE_SYNC | REQ_PRIO, | |
100 | }; | |
158c194c | 101 | int dirty, err; |
e18c65b2 | 102 | |
b3d208f9 | 103 | f2fs_bug_on(F2FS_I_SB(dn->inode), page->index); |
e18c65b2 | 104 | |
b3d208f9 JK |
105 | if (!f2fs_exist_data(dn->inode)) |
106 | goto clear_out; | |
ec4e7af4 | 107 | |
b3d208f9 | 108 | err = f2fs_reserve_block(dn, 0); |
15c6e3aa | 109 | if (err) |
b3d208f9 | 110 | return err; |
e18c65b2 | 111 | |
9ac1349a | 112 | f2fs_wait_on_page_writeback(page, DATA); |
b3d208f9 JK |
113 | |
114 | if (PageUptodate(page)) | |
115 | goto no_update; | |
116 | ||
18309aaa | 117 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_CACHE_SIZE); |
e18c65b2 HL |
118 | |
119 | /* Copy the whole inline data block */ | |
b3d208f9 | 120 | src_addr = inline_data_addr(dn->inode_page); |
f1e33a04 | 121 | dst_addr = kmap_atomic(page); |
e18c65b2 | 122 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); |
09b8b3c8 | 123 | flush_dcache_page(page); |
f1e33a04 | 124 | kunmap_atomic(dst_addr); |
9e09fc85 | 125 | SetPageUptodate(page); |
b3d208f9 | 126 | no_update: |
158c194c JK |
127 | /* clear dirty state */ |
128 | dirty = clear_page_dirty_for_io(page); | |
129 | ||
e18c65b2 HL |
130 | /* write data page to try to make data consistent */ |
131 | set_page_writeback(page); | |
cf04e8eb JK |
132 | fio.blk_addr = dn->data_blkaddr; |
133 | write_data_page(page, dn, &fio); | |
7e4dde79 | 134 | f2fs_update_extent_cache(dn); |
5514f0aa | 135 | f2fs_wait_on_page_writeback(page, DATA); |
158c194c JK |
136 | if (dirty) |
137 | inode_dec_dirty_pages(dn->inode); | |
e18c65b2 | 138 | |
95f5b0fc JK |
139 | /* this converted inline_data should be recovered. */ |
140 | set_inode_flag(F2FS_I(dn->inode), FI_APPEND_WRITE); | |
141 | ||
e18c65b2 | 142 | /* clear inline data and flag after data writeback */ |
0bfcfcca | 143 | truncate_inline_inode(dn->inode_page, 0); |
b3d208f9 | 144 | clear_out: |
b3d208f9 | 145 | stat_dec_inline_inode(dn->inode); |
57e2a2c0 | 146 | f2fs_clear_inline_inode(dn->inode); |
b3d208f9 JK |
147 | sync_inode_page(dn); |
148 | f2fs_put_dnode(dn); | |
149 | return 0; | |
e18c65b2 HL |
150 | } |
151 | ||
b3d208f9 | 152 | int f2fs_convert_inline_inode(struct inode *inode) |
e18c65b2 | 153 | { |
b3d208f9 JK |
154 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
155 | struct dnode_of_data dn; | |
156 | struct page *ipage, *page; | |
157 | int err = 0; | |
e18c65b2 | 158 | |
b3d208f9 JK |
159 | page = grab_cache_page(inode->i_mapping, 0); |
160 | if (!page) | |
161 | return -ENOMEM; | |
e18c65b2 | 162 | |
b3d208f9 JK |
163 | f2fs_lock_op(sbi); |
164 | ||
165 | ipage = get_node_page(sbi, inode->i_ino); | |
166 | if (IS_ERR(ipage)) { | |
6d20aff8 JK |
167 | err = PTR_ERR(ipage); |
168 | goto out; | |
b067ba1f | 169 | } |
e18c65b2 | 170 | |
b3d208f9 JK |
171 | set_new_dnode(&dn, inode, ipage, ipage, 0); |
172 | ||
173 | if (f2fs_has_inline_data(inode)) | |
174 | err = f2fs_convert_inline_page(&dn, page); | |
175 | ||
176 | f2fs_put_dnode(&dn); | |
6d20aff8 | 177 | out: |
b3d208f9 JK |
178 | f2fs_unlock_op(sbi); |
179 | ||
180 | f2fs_put_page(page, 1); | |
e18c65b2 HL |
181 | return err; |
182 | } | |
183 | ||
b3d208f9 | 184 | int f2fs_write_inline_data(struct inode *inode, struct page *page) |
e18c65b2 HL |
185 | { |
186 | void *src_addr, *dst_addr; | |
e18c65b2 HL |
187 | struct dnode_of_data dn; |
188 | int err; | |
189 | ||
190 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
191 | err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); | |
192 | if (err) | |
193 | return err; | |
e18c65b2 | 194 | |
c08a690b | 195 | if (!f2fs_has_inline_data(inode)) { |
b3d208f9 JK |
196 | f2fs_put_dnode(&dn); |
197 | return -EAGAIN; | |
c08a690b JK |
198 | } |
199 | ||
b3d208f9 JK |
200 | f2fs_bug_on(F2FS_I_SB(inode), page->index); |
201 | ||
202 | f2fs_wait_on_page_writeback(dn.inode_page, NODE); | |
f1e33a04 | 203 | src_addr = kmap_atomic(page); |
b3d208f9 JK |
204 | dst_addr = inline_data_addr(dn.inode_page); |
205 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); | |
f1e33a04 | 206 | kunmap_atomic(src_addr); |
e18c65b2 | 207 | |
fff04f90 | 208 | set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE); |
b3d208f9 JK |
209 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); |
210 | ||
e18c65b2 HL |
211 | sync_inode_page(&dn); |
212 | f2fs_put_dnode(&dn); | |
e18c65b2 HL |
213 | return 0; |
214 | } | |
1e1bb4ba | 215 | |
0342fd30 | 216 | bool recover_inline_data(struct inode *inode, struct page *npage) |
1e1bb4ba | 217 | { |
4081363f | 218 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1e1bb4ba JK |
219 | struct f2fs_inode *ri = NULL; |
220 | void *src_addr, *dst_addr; | |
221 | struct page *ipage; | |
222 | ||
223 | /* | |
224 | * The inline_data recovery policy is as follows. | |
225 | * [prev.] [next] of inline_data flag | |
226 | * o o -> recover inline_data | |
227 | * o x -> remove inline_data, and then recover data blocks | |
228 | * x o -> remove inline_data, and then recover inline_data | |
229 | * x x -> recover data blocks | |
230 | */ | |
231 | if (IS_INODE(npage)) | |
232 | ri = F2FS_INODE(npage); | |
233 | ||
234 | if (f2fs_has_inline_data(inode) && | |
0342fd30 | 235 | ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
1e1bb4ba JK |
236 | process_inline: |
237 | ipage = get_node_page(sbi, inode->i_ino); | |
9850cf4a | 238 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
1e1bb4ba | 239 | |
54b591df JK |
240 | f2fs_wait_on_page_writeback(ipage, NODE); |
241 | ||
1e1bb4ba JK |
242 | src_addr = inline_data_addr(npage); |
243 | dst_addr = inline_data_addr(ipage); | |
244 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); | |
b3d208f9 JK |
245 | |
246 | set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); | |
247 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); | |
248 | ||
1e1bb4ba JK |
249 | update_inode(inode, ipage); |
250 | f2fs_put_page(ipage, 1); | |
0342fd30 | 251 | return true; |
1e1bb4ba JK |
252 | } |
253 | ||
254 | if (f2fs_has_inline_data(inode)) { | |
255 | ipage = get_node_page(sbi, inode->i_ino); | |
9850cf4a | 256 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
0bfcfcca | 257 | truncate_inline_inode(ipage, 0); |
b3d208f9 | 258 | f2fs_clear_inline_inode(inode); |
1e1bb4ba JK |
259 | update_inode(inode, ipage); |
260 | f2fs_put_page(ipage, 1); | |
0342fd30 | 261 | } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
764aa3e9 | 262 | truncate_blocks(inode, 0, false); |
1e1bb4ba JK |
263 | goto process_inline; |
264 | } | |
0342fd30 | 265 | return false; |
1e1bb4ba | 266 | } |
201a05be CY |
267 | |
268 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, | |
269 | struct qstr *name, struct page **res_page) | |
270 | { | |
271 | struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); | |
4e6ebf6d | 272 | struct f2fs_inline_dentry *inline_dentry; |
201a05be | 273 | struct f2fs_dir_entry *de; |
7b3cd7d6 | 274 | struct f2fs_dentry_ptr d; |
4e6ebf6d | 275 | struct page *ipage; |
201a05be CY |
276 | |
277 | ipage = get_node_page(sbi, dir->i_ino); | |
278 | if (IS_ERR(ipage)) | |
279 | return NULL; | |
280 | ||
4e6ebf6d | 281 | inline_dentry = inline_data_addr(ipage); |
201a05be | 282 | |
7b3cd7d6 JK |
283 | make_dentry_ptr(&d, (void *)inline_dentry, 2); |
284 | de = find_target_dentry(name, NULL, &d); | |
285 | ||
201a05be | 286 | unlock_page(ipage); |
4e6ebf6d JK |
287 | if (de) |
288 | *res_page = ipage; | |
289 | else | |
290 | f2fs_put_page(ipage, 0); | |
291 | ||
292 | /* | |
293 | * For the most part, it should be a bug when name_len is zero. | |
294 | * We stop here for figuring out where the bugs has occurred. | |
295 | */ | |
7b3cd7d6 | 296 | f2fs_bug_on(sbi, d.max < 0); |
201a05be CY |
297 | return de; |
298 | } | |
299 | ||
300 | struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *dir, | |
301 | struct page **p) | |
302 | { | |
303 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
304 | struct page *ipage; | |
305 | struct f2fs_dir_entry *de; | |
306 | struct f2fs_inline_dentry *dentry_blk; | |
307 | ||
308 | ipage = get_node_page(sbi, dir->i_ino); | |
309 | if (IS_ERR(ipage)) | |
310 | return NULL; | |
311 | ||
312 | dentry_blk = inline_data_addr(ipage); | |
313 | de = &dentry_blk->dentry[1]; | |
314 | *p = ipage; | |
315 | unlock_page(ipage); | |
316 | return de; | |
317 | } | |
318 | ||
319 | int make_empty_inline_dir(struct inode *inode, struct inode *parent, | |
320 | struct page *ipage) | |
321 | { | |
322 | struct f2fs_inline_dentry *dentry_blk; | |
062a3e7b | 323 | struct f2fs_dentry_ptr d; |
201a05be CY |
324 | |
325 | dentry_blk = inline_data_addr(ipage); | |
326 | ||
062a3e7b JK |
327 | make_dentry_ptr(&d, (void *)dentry_blk, 2); |
328 | do_make_empty_dir(inode, parent, &d); | |
201a05be CY |
329 | |
330 | set_page_dirty(ipage); | |
331 | ||
332 | /* update i_size to MAX_INLINE_DATA */ | |
333 | if (i_size_read(inode) < MAX_INLINE_DATA) { | |
334 | i_size_write(inode, MAX_INLINE_DATA); | |
335 | set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR); | |
336 | } | |
337 | return 0; | |
338 | } | |
339 | ||
d64948a4 | 340 | static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage, |
201a05be CY |
341 | struct f2fs_inline_dentry *inline_dentry) |
342 | { | |
343 | struct page *page; | |
344 | struct dnode_of_data dn; | |
345 | struct f2fs_dentry_block *dentry_blk; | |
346 | int err; | |
347 | ||
348 | page = grab_cache_page(dir->i_mapping, 0); | |
349 | if (!page) | |
350 | return -ENOMEM; | |
351 | ||
352 | set_new_dnode(&dn, dir, ipage, NULL, 0); | |
353 | err = f2fs_reserve_block(&dn, 0); | |
354 | if (err) | |
355 | goto out; | |
356 | ||
357 | f2fs_wait_on_page_writeback(page, DATA); | |
358 | zero_user_segment(page, 0, PAGE_CACHE_SIZE); | |
359 | ||
f1e33a04 | 360 | dentry_blk = kmap_atomic(page); |
201a05be CY |
361 | |
362 | /* copy data from inline dentry block to new dentry block */ | |
363 | memcpy(dentry_blk->dentry_bitmap, inline_dentry->dentry_bitmap, | |
364 | INLINE_DENTRY_BITMAP_SIZE); | |
365 | memcpy(dentry_blk->dentry, inline_dentry->dentry, | |
366 | sizeof(struct f2fs_dir_entry) * NR_INLINE_DENTRY); | |
367 | memcpy(dentry_blk->filename, inline_dentry->filename, | |
368 | NR_INLINE_DENTRY * F2FS_SLOT_LEN); | |
369 | ||
f1e33a04 | 370 | kunmap_atomic(dentry_blk); |
201a05be CY |
371 | SetPageUptodate(page); |
372 | set_page_dirty(page); | |
373 | ||
374 | /* clear inline dir and flag after data writeback */ | |
0bfcfcca | 375 | truncate_inline_inode(ipage, 0); |
b3d208f9 | 376 | |
3289c061 | 377 | stat_dec_inline_dir(dir); |
622f28ae | 378 | clear_inode_flag(F2FS_I(dir), FI_INLINE_DENTRY); |
201a05be CY |
379 | |
380 | if (i_size_read(dir) < PAGE_CACHE_SIZE) { | |
381 | i_size_write(dir, PAGE_CACHE_SIZE); | |
382 | set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); | |
383 | } | |
384 | ||
385 | sync_inode_page(&dn); | |
386 | out: | |
387 | f2fs_put_page(page, 1); | |
388 | return err; | |
389 | } | |
390 | ||
391 | int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name, | |
392 | struct inode *inode) | |
393 | { | |
394 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
395 | struct page *ipage; | |
396 | unsigned int bit_pos; | |
397 | f2fs_hash_t name_hash; | |
201a05be CY |
398 | size_t namelen = name->len; |
399 | struct f2fs_inline_dentry *dentry_blk = NULL; | |
3b4d732a | 400 | struct f2fs_dentry_ptr d; |
201a05be CY |
401 | int slots = GET_DENTRY_SLOTS(namelen); |
402 | struct page *page; | |
403 | int err = 0; | |
201a05be CY |
404 | |
405 | ipage = get_node_page(sbi, dir->i_ino); | |
406 | if (IS_ERR(ipage)) | |
407 | return PTR_ERR(ipage); | |
408 | ||
409 | dentry_blk = inline_data_addr(ipage); | |
a82afa20 JK |
410 | bit_pos = room_for_filename(&dentry_blk->dentry_bitmap, |
411 | slots, NR_INLINE_DENTRY); | |
201a05be CY |
412 | if (bit_pos >= NR_INLINE_DENTRY) { |
413 | err = f2fs_convert_inline_dir(dir, ipage, dentry_blk); | |
414 | if (!err) | |
415 | err = -EAGAIN; | |
416 | goto out; | |
417 | } | |
418 | ||
201a05be | 419 | down_write(&F2FS_I(inode)->i_sem); |
bce8d112 | 420 | page = init_inode_metadata(inode, dir, name, ipage); |
201a05be CY |
421 | if (IS_ERR(page)) { |
422 | err = PTR_ERR(page); | |
423 | goto fail; | |
424 | } | |
bce8d112 JK |
425 | |
426 | f2fs_wait_on_page_writeback(ipage, NODE); | |
3b4d732a CY |
427 | |
428 | name_hash = f2fs_dentry_hash(name); | |
429 | make_dentry_ptr(&d, (void *)dentry_blk, 2); | |
430 | f2fs_update_dentry(inode, &d, name, name_hash, bit_pos); | |
431 | ||
201a05be CY |
432 | set_page_dirty(ipage); |
433 | ||
434 | /* we don't need to mark_inode_dirty now */ | |
435 | F2FS_I(inode)->i_pino = dir->i_ino; | |
436 | update_inode(inode, page); | |
437 | f2fs_put_page(page, 1); | |
438 | ||
439 | update_parent_metadata(dir, inode, 0); | |
440 | fail: | |
441 | up_write(&F2FS_I(inode)->i_sem); | |
442 | ||
443 | if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) { | |
444 | update_inode(dir, ipage); | |
445 | clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); | |
446 | } | |
447 | out: | |
448 | f2fs_put_page(ipage, 1); | |
449 | return err; | |
450 | } | |
451 | ||
452 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, | |
453 | struct inode *dir, struct inode *inode) | |
454 | { | |
455 | struct f2fs_inline_dentry *inline_dentry; | |
456 | int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); | |
457 | unsigned int bit_pos; | |
458 | int i; | |
459 | ||
460 | lock_page(page); | |
59a06155 | 461 | f2fs_wait_on_page_writeback(page, NODE); |
201a05be CY |
462 | |
463 | inline_dentry = inline_data_addr(page); | |
464 | bit_pos = dentry - inline_dentry->dentry; | |
465 | for (i = 0; i < slots; i++) | |
466 | test_and_clear_bit_le(bit_pos + i, | |
467 | &inline_dentry->dentry_bitmap); | |
468 | ||
469 | set_page_dirty(page); | |
470 | ||
471 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; | |
472 | ||
473 | if (inode) | |
474 | f2fs_drop_nlink(dir, inode, page); | |
475 | ||
476 | f2fs_put_page(page, 1); | |
477 | } | |
478 | ||
479 | bool f2fs_empty_inline_dir(struct inode *dir) | |
480 | { | |
481 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
482 | struct page *ipage; | |
483 | unsigned int bit_pos = 2; | |
484 | struct f2fs_inline_dentry *dentry_blk; | |
485 | ||
486 | ipage = get_node_page(sbi, dir->i_ino); | |
487 | if (IS_ERR(ipage)) | |
488 | return false; | |
489 | ||
490 | dentry_blk = inline_data_addr(ipage); | |
491 | bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, | |
492 | NR_INLINE_DENTRY, | |
493 | bit_pos); | |
494 | ||
495 | f2fs_put_page(ipage, 1); | |
496 | ||
497 | if (bit_pos < NR_INLINE_DENTRY) | |
498 | return false; | |
499 | ||
500 | return true; | |
501 | } | |
502 | ||
503 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx) | |
504 | { | |
505 | struct inode *inode = file_inode(file); | |
201a05be | 506 | struct f2fs_inline_dentry *inline_dentry = NULL; |
201a05be | 507 | struct page *ipage = NULL; |
7b3cd7d6 | 508 | struct f2fs_dentry_ptr d; |
201a05be CY |
509 | |
510 | if (ctx->pos == NR_INLINE_DENTRY) | |
511 | return 0; | |
512 | ||
38594de7 | 513 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
201a05be CY |
514 | if (IS_ERR(ipage)) |
515 | return PTR_ERR(ipage); | |
516 | ||
201a05be | 517 | inline_dentry = inline_data_addr(ipage); |
201a05be | 518 | |
7b3cd7d6 JK |
519 | make_dentry_ptr(&d, (void *)inline_dentry, 2); |
520 | ||
521 | if (!f2fs_fill_dentries(ctx, &d, 0)) | |
38594de7 | 522 | ctx->pos = NR_INLINE_DENTRY; |
201a05be | 523 | |
38594de7 | 524 | f2fs_put_page(ipage, 1); |
201a05be CY |
525 | return 0; |
526 | } |