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 | |
09cbfeaf | 54 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_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 | ||
fec1d657 | 74 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
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) | |
09cbfeaf | 96 | zero_user_segment(page, 0, PAGE_SIZE); |
b3d208f9 JK |
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 | struct f2fs_io_info fio = { |
05ca3632 | 109 | .sbi = F2FS_I_SB(dn->inode), |
e18c65b2 HL |
110 | .type = DATA, |
111 | .rw = WRITE_SYNC | REQ_PRIO, | |
05ca3632 | 112 | .page = page, |
4375a336 | 113 | .encrypted_page = NULL, |
e18c65b2 | 114 | }; |
158c194c | 115 | int dirty, err; |
e18c65b2 | 116 | |
b3d208f9 JK |
117 | if (!f2fs_exist_data(dn->inode)) |
118 | goto clear_out; | |
ec4e7af4 | 119 | |
b3d208f9 | 120 | err = f2fs_reserve_block(dn, 0); |
15c6e3aa | 121 | if (err) |
b3d208f9 | 122 | return err; |
e18c65b2 | 123 | |
85ead818 | 124 | f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page)); |
b3d208f9 | 125 | |
8060656a | 126 | read_inline_data(page, dn->inode_page); |
6282adbf JK |
127 | set_page_dirty(page); |
128 | ||
158c194c JK |
129 | /* clear dirty state */ |
130 | dirty = clear_page_dirty_for_io(page); | |
131 | ||
e18c65b2 HL |
132 | /* write data page to try to make data consistent */ |
133 | set_page_writeback(page); | |
7a9d7548 | 134 | fio.old_blkaddr = dn->data_blkaddr; |
05ca3632 | 135 | write_data_page(dn, &fio); |
fec1d657 | 136 | f2fs_wait_on_page_writeback(page, DATA, true); |
158c194c JK |
137 | if (dirty) |
138 | inode_dec_dirty_pages(dn->inode); | |
e18c65b2 | 139 | |
95f5b0fc JK |
140 | /* this converted inline_data should be recovered. */ |
141 | set_inode_flag(F2FS_I(dn->inode), FI_APPEND_WRITE); | |
142 | ||
e18c65b2 | 143 | /* clear inline data and flag after data writeback */ |
0bfcfcca | 144 | truncate_inline_inode(dn->inode_page, 0); |
2049d4fc | 145 | clear_inline_node(dn->inode_page); |
b3d208f9 | 146 | clear_out: |
b3d208f9 | 147 | stat_dec_inline_inode(dn->inode); |
57e2a2c0 | 148 | f2fs_clear_inline_inode(dn->inode); |
b3d208f9 JK |
149 | sync_inode_page(dn); |
150 | f2fs_put_dnode(dn); | |
151 | return 0; | |
e18c65b2 HL |
152 | } |
153 | ||
b3d208f9 | 154 | int f2fs_convert_inline_inode(struct inode *inode) |
e18c65b2 | 155 | { |
b3d208f9 JK |
156 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
157 | struct dnode_of_data dn; | |
158 | struct page *ipage, *page; | |
159 | int err = 0; | |
e18c65b2 | 160 | |
b9d777b8 JK |
161 | if (!f2fs_has_inline_data(inode)) |
162 | return 0; | |
163 | ||
b3d208f9 JK |
164 | page = grab_cache_page(inode->i_mapping, 0); |
165 | if (!page) | |
166 | return -ENOMEM; | |
e18c65b2 | 167 | |
b3d208f9 JK |
168 | f2fs_lock_op(sbi); |
169 | ||
170 | ipage = get_node_page(sbi, inode->i_ino); | |
171 | if (IS_ERR(ipage)) { | |
6d20aff8 JK |
172 | err = PTR_ERR(ipage); |
173 | goto out; | |
b067ba1f | 174 | } |
e18c65b2 | 175 | |
b3d208f9 JK |
176 | set_new_dnode(&dn, inode, ipage, ipage, 0); |
177 | ||
178 | if (f2fs_has_inline_data(inode)) | |
179 | err = f2fs_convert_inline_page(&dn, page); | |
180 | ||
181 | f2fs_put_dnode(&dn); | |
6d20aff8 | 182 | out: |
b3d208f9 JK |
183 | f2fs_unlock_op(sbi); |
184 | ||
185 | f2fs_put_page(page, 1); | |
2a340760 | 186 | |
2c4db1a6 | 187 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 188 | |
e18c65b2 HL |
189 | return err; |
190 | } | |
191 | ||
b3d208f9 | 192 | int f2fs_write_inline_data(struct inode *inode, struct page *page) |
e18c65b2 HL |
193 | { |
194 | void *src_addr, *dst_addr; | |
e18c65b2 HL |
195 | struct dnode_of_data dn; |
196 | int err; | |
197 | ||
198 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
199 | err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); | |
200 | if (err) | |
201 | return err; | |
e18c65b2 | 202 | |
c08a690b | 203 | if (!f2fs_has_inline_data(inode)) { |
b3d208f9 JK |
204 | f2fs_put_dnode(&dn); |
205 | return -EAGAIN; | |
c08a690b JK |
206 | } |
207 | ||
b3d208f9 JK |
208 | f2fs_bug_on(F2FS_I_SB(inode), page->index); |
209 | ||
fec1d657 | 210 | f2fs_wait_on_page_writeback(dn.inode_page, NODE, true); |
f1e33a04 | 211 | src_addr = kmap_atomic(page); |
b3d208f9 JK |
212 | dst_addr = inline_data_addr(dn.inode_page); |
213 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); | |
f1e33a04 | 214 | kunmap_atomic(src_addr); |
e18c65b2 | 215 | |
fff04f90 | 216 | set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE); |
b3d208f9 JK |
217 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); |
218 | ||
e18c65b2 | 219 | sync_inode_page(&dn); |
2049d4fc | 220 | clear_inline_node(dn.inode_page); |
e18c65b2 | 221 | f2fs_put_dnode(&dn); |
e18c65b2 HL |
222 | return 0; |
223 | } | |
1e1bb4ba | 224 | |
0342fd30 | 225 | bool recover_inline_data(struct inode *inode, struct page *npage) |
1e1bb4ba | 226 | { |
4081363f | 227 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1e1bb4ba JK |
228 | struct f2fs_inode *ri = NULL; |
229 | void *src_addr, *dst_addr; | |
230 | struct page *ipage; | |
231 | ||
232 | /* | |
233 | * The inline_data recovery policy is as follows. | |
234 | * [prev.] [next] of inline_data flag | |
235 | * o o -> recover inline_data | |
236 | * o x -> remove inline_data, and then recover data blocks | |
237 | * x o -> remove inline_data, and then recover inline_data | |
238 | * x x -> recover data blocks | |
239 | */ | |
240 | if (IS_INODE(npage)) | |
241 | ri = F2FS_INODE(npage); | |
242 | ||
243 | if (f2fs_has_inline_data(inode) && | |
0342fd30 | 244 | ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
1e1bb4ba JK |
245 | process_inline: |
246 | ipage = get_node_page(sbi, inode->i_ino); | |
9850cf4a | 247 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
1e1bb4ba | 248 | |
fec1d657 | 249 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
54b591df | 250 | |
1e1bb4ba JK |
251 | src_addr = inline_data_addr(npage); |
252 | dst_addr = inline_data_addr(ipage); | |
253 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); | |
b3d208f9 JK |
254 | |
255 | set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); | |
256 | set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); | |
257 | ||
1e1bb4ba JK |
258 | update_inode(inode, ipage); |
259 | f2fs_put_page(ipage, 1); | |
0342fd30 | 260 | return true; |
1e1bb4ba JK |
261 | } |
262 | ||
263 | if (f2fs_has_inline_data(inode)) { | |
264 | ipage = get_node_page(sbi, inode->i_ino); | |
9850cf4a | 265 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
545fe421 NK |
266 | if (!truncate_inline_inode(ipage, 0)) |
267 | return false; | |
b3d208f9 | 268 | f2fs_clear_inline_inode(inode); |
1e1bb4ba JK |
269 | update_inode(inode, ipage); |
270 | f2fs_put_page(ipage, 1); | |
0342fd30 | 271 | } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
545fe421 NK |
272 | if (truncate_blocks(inode, 0, false)) |
273 | return false; | |
1e1bb4ba JK |
274 | goto process_inline; |
275 | } | |
0342fd30 | 276 | return false; |
1e1bb4ba | 277 | } |
201a05be CY |
278 | |
279 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, | |
0b81d077 | 280 | struct fscrypt_name *fname, struct page **res_page) |
201a05be CY |
281 | { |
282 | struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); | |
4e6ebf6d | 283 | struct f2fs_inline_dentry *inline_dentry; |
6e22c691 | 284 | struct qstr name = FSTR_TO_QSTR(&fname->disk_name); |
201a05be | 285 | struct f2fs_dir_entry *de; |
7b3cd7d6 | 286 | struct f2fs_dentry_ptr d; |
4e6ebf6d | 287 | struct page *ipage; |
6e22c691 | 288 | f2fs_hash_t namehash; |
201a05be CY |
289 | |
290 | ipage = get_node_page(sbi, dir->i_ino); | |
291 | if (IS_ERR(ipage)) | |
292 | return NULL; | |
293 | ||
6e22c691 JK |
294 | namehash = f2fs_dentry_hash(&name); |
295 | ||
4e6ebf6d | 296 | inline_dentry = inline_data_addr(ipage); |
201a05be | 297 | |
d8c6822a | 298 | make_dentry_ptr(NULL, &d, (void *)inline_dentry, 2); |
6e22c691 | 299 | de = find_target_dentry(fname, namehash, NULL, &d); |
201a05be | 300 | unlock_page(ipage); |
4e6ebf6d JK |
301 | if (de) |
302 | *res_page = ipage; | |
303 | else | |
304 | f2fs_put_page(ipage, 0); | |
305 | ||
306 | /* | |
307 | * For the most part, it should be a bug when name_len is zero. | |
308 | * We stop here for figuring out where the bugs has occurred. | |
309 | */ | |
7b3cd7d6 | 310 | f2fs_bug_on(sbi, d.max < 0); |
201a05be CY |
311 | return de; |
312 | } | |
313 | ||
314 | struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *dir, | |
315 | struct page **p) | |
316 | { | |
317 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
318 | struct page *ipage; | |
319 | struct f2fs_dir_entry *de; | |
320 | struct f2fs_inline_dentry *dentry_blk; | |
321 | ||
322 | ipage = get_node_page(sbi, dir->i_ino); | |
323 | if (IS_ERR(ipage)) | |
324 | return NULL; | |
325 | ||
326 | dentry_blk = inline_data_addr(ipage); | |
327 | de = &dentry_blk->dentry[1]; | |
328 | *p = ipage; | |
329 | unlock_page(ipage); | |
330 | return de; | |
331 | } | |
332 | ||
333 | int make_empty_inline_dir(struct inode *inode, struct inode *parent, | |
334 | struct page *ipage) | |
335 | { | |
336 | struct f2fs_inline_dentry *dentry_blk; | |
062a3e7b | 337 | struct f2fs_dentry_ptr d; |
201a05be CY |
338 | |
339 | dentry_blk = inline_data_addr(ipage); | |
340 | ||
d8c6822a | 341 | make_dentry_ptr(NULL, &d, (void *)dentry_blk, 2); |
062a3e7b | 342 | do_make_empty_dir(inode, parent, &d); |
201a05be CY |
343 | |
344 | set_page_dirty(ipage); | |
345 | ||
346 | /* update i_size to MAX_INLINE_DATA */ | |
347 | if (i_size_read(inode) < MAX_INLINE_DATA) { | |
348 | i_size_write(inode, MAX_INLINE_DATA); | |
349 | set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR); | |
350 | } | |
351 | return 0; | |
352 | } | |
353 | ||
470f00e9 CY |
354 | /* |
355 | * NOTE: ipage is grabbed by caller, but if any error occurs, we should | |
356 | * release ipage in this function. | |
357 | */ | |
d64948a4 | 358 | static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage, |
201a05be CY |
359 | struct f2fs_inline_dentry *inline_dentry) |
360 | { | |
361 | struct page *page; | |
362 | struct dnode_of_data dn; | |
363 | struct f2fs_dentry_block *dentry_blk; | |
364 | int err; | |
365 | ||
366 | page = grab_cache_page(dir->i_mapping, 0); | |
470f00e9 CY |
367 | if (!page) { |
368 | f2fs_put_page(ipage, 1); | |
201a05be | 369 | return -ENOMEM; |
470f00e9 | 370 | } |
201a05be CY |
371 | |
372 | set_new_dnode(&dn, dir, ipage, NULL, 0); | |
373 | err = f2fs_reserve_block(&dn, 0); | |
374 | if (err) | |
375 | goto out; | |
376 | ||
fec1d657 | 377 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 378 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_SIZE); |
201a05be | 379 | |
f1e33a04 | 380 | dentry_blk = kmap_atomic(page); |
201a05be CY |
381 | |
382 | /* copy data from inline dentry block to new dentry block */ | |
383 | memcpy(dentry_blk->dentry_bitmap, inline_dentry->dentry_bitmap, | |
384 | INLINE_DENTRY_BITMAP_SIZE); | |
4ec17d68 CY |
385 | memset(dentry_blk->dentry_bitmap + INLINE_DENTRY_BITMAP_SIZE, 0, |
386 | SIZE_OF_DENTRY_BITMAP - INLINE_DENTRY_BITMAP_SIZE); | |
387 | /* | |
388 | * we do not need to zero out remainder part of dentry and filename | |
389 | * field, since we have used bitmap for marking the usage status of | |
390 | * them, besides, we can also ignore copying/zeroing reserved space | |
391 | * of dentry block, because them haven't been used so far. | |
392 | */ | |
201a05be CY |
393 | memcpy(dentry_blk->dentry, inline_dentry->dentry, |
394 | sizeof(struct f2fs_dir_entry) * NR_INLINE_DENTRY); | |
395 | memcpy(dentry_blk->filename, inline_dentry->filename, | |
396 | NR_INLINE_DENTRY * F2FS_SLOT_LEN); | |
397 | ||
f1e33a04 | 398 | kunmap_atomic(dentry_blk); |
201a05be CY |
399 | SetPageUptodate(page); |
400 | set_page_dirty(page); | |
401 | ||
402 | /* clear inline dir and flag after data writeback */ | |
0bfcfcca | 403 | truncate_inline_inode(ipage, 0); |
b3d208f9 | 404 | |
3289c061 | 405 | stat_dec_inline_dir(dir); |
622f28ae | 406 | clear_inode_flag(F2FS_I(dir), FI_INLINE_DENTRY); |
201a05be | 407 | |
09cbfeaf KS |
408 | if (i_size_read(dir) < PAGE_SIZE) { |
409 | i_size_write(dir, PAGE_SIZE); | |
201a05be CY |
410 | set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); |
411 | } | |
412 | ||
413 | sync_inode_page(&dn); | |
414 | out: | |
415 | f2fs_put_page(page, 1); | |
416 | return err; | |
417 | } | |
418 | ||
419 | int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name, | |
510022a8 | 420 | struct inode *inode, nid_t ino, umode_t mode) |
201a05be CY |
421 | { |
422 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
423 | struct page *ipage; | |
424 | unsigned int bit_pos; | |
425 | f2fs_hash_t name_hash; | |
201a05be CY |
426 | size_t namelen = name->len; |
427 | struct f2fs_inline_dentry *dentry_blk = NULL; | |
3b4d732a | 428 | struct f2fs_dentry_ptr d; |
201a05be | 429 | int slots = GET_DENTRY_SLOTS(namelen); |
510022a8 | 430 | struct page *page = NULL; |
201a05be | 431 | int err = 0; |
201a05be CY |
432 | |
433 | ipage = get_node_page(sbi, dir->i_ino); | |
434 | if (IS_ERR(ipage)) | |
435 | return PTR_ERR(ipage); | |
436 | ||
437 | dentry_blk = inline_data_addr(ipage); | |
a82afa20 JK |
438 | bit_pos = room_for_filename(&dentry_blk->dentry_bitmap, |
439 | slots, NR_INLINE_DENTRY); | |
201a05be CY |
440 | if (bit_pos >= NR_INLINE_DENTRY) { |
441 | err = f2fs_convert_inline_dir(dir, ipage, dentry_blk); | |
470f00e9 CY |
442 | if (err) |
443 | return err; | |
444 | err = -EAGAIN; | |
201a05be CY |
445 | goto out; |
446 | } | |
447 | ||
510022a8 JK |
448 | if (inode) { |
449 | down_write(&F2FS_I(inode)->i_sem); | |
450 | page = init_inode_metadata(inode, dir, name, ipage); | |
451 | if (IS_ERR(page)) { | |
452 | err = PTR_ERR(page); | |
453 | goto fail; | |
454 | } | |
201a05be | 455 | } |
bce8d112 | 456 | |
fec1d657 | 457 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
3b4d732a CY |
458 | |
459 | name_hash = f2fs_dentry_hash(name); | |
d8c6822a | 460 | make_dentry_ptr(NULL, &d, (void *)dentry_blk, 2); |
510022a8 | 461 | f2fs_update_dentry(ino, mode, &d, name, name_hash, bit_pos); |
3b4d732a | 462 | |
201a05be CY |
463 | set_page_dirty(ipage); |
464 | ||
465 | /* we don't need to mark_inode_dirty now */ | |
510022a8 JK |
466 | if (inode) { |
467 | F2FS_I(inode)->i_pino = dir->i_ino; | |
468 | update_inode(inode, page); | |
469 | f2fs_put_page(page, 1); | |
470 | } | |
201a05be CY |
471 | |
472 | update_parent_metadata(dir, inode, 0); | |
473 | fail: | |
510022a8 JK |
474 | if (inode) |
475 | up_write(&F2FS_I(inode)->i_sem); | |
201a05be CY |
476 | |
477 | if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) { | |
478 | update_inode(dir, ipage); | |
479 | clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); | |
480 | } | |
481 | out: | |
482 | f2fs_put_page(ipage, 1); | |
483 | return err; | |
484 | } | |
485 | ||
486 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, | |
487 | struct inode *dir, struct inode *inode) | |
488 | { | |
489 | struct f2fs_inline_dentry *inline_dentry; | |
490 | int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); | |
491 | unsigned int bit_pos; | |
492 | int i; | |
493 | ||
494 | lock_page(page); | |
fec1d657 | 495 | f2fs_wait_on_page_writeback(page, NODE, true); |
201a05be CY |
496 | |
497 | inline_dentry = inline_data_addr(page); | |
498 | bit_pos = dentry - inline_dentry->dentry; | |
499 | for (i = 0; i < slots; i++) | |
500 | test_and_clear_bit_le(bit_pos + i, | |
501 | &inline_dentry->dentry_bitmap); | |
502 | ||
503 | set_page_dirty(page); | |
504 | ||
505 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; | |
506 | ||
507 | if (inode) | |
508 | f2fs_drop_nlink(dir, inode, page); | |
509 | ||
510 | f2fs_put_page(page, 1); | |
511 | } | |
512 | ||
513 | bool f2fs_empty_inline_dir(struct inode *dir) | |
514 | { | |
515 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
516 | struct page *ipage; | |
517 | unsigned int bit_pos = 2; | |
518 | struct f2fs_inline_dentry *dentry_blk; | |
519 | ||
520 | ipage = get_node_page(sbi, dir->i_ino); | |
521 | if (IS_ERR(ipage)) | |
522 | return false; | |
523 | ||
524 | dentry_blk = inline_data_addr(ipage); | |
525 | bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, | |
526 | NR_INLINE_DENTRY, | |
527 | bit_pos); | |
528 | ||
529 | f2fs_put_page(ipage, 1); | |
530 | ||
531 | if (bit_pos < NR_INLINE_DENTRY) | |
532 | return false; | |
533 | ||
534 | return true; | |
535 | } | |
536 | ||
d8c6822a | 537 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, |
0b81d077 | 538 | struct fscrypt_str *fstr) |
201a05be CY |
539 | { |
540 | struct inode *inode = file_inode(file); | |
201a05be | 541 | struct f2fs_inline_dentry *inline_dentry = NULL; |
201a05be | 542 | struct page *ipage = NULL; |
7b3cd7d6 | 543 | struct f2fs_dentry_ptr d; |
201a05be CY |
544 | |
545 | if (ctx->pos == NR_INLINE_DENTRY) | |
546 | return 0; | |
547 | ||
38594de7 | 548 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
201a05be CY |
549 | if (IS_ERR(ipage)) |
550 | return PTR_ERR(ipage); | |
551 | ||
201a05be | 552 | inline_dentry = inline_data_addr(ipage); |
201a05be | 553 | |
d8c6822a | 554 | make_dentry_ptr(inode, &d, (void *)inline_dentry, 2); |
7b3cd7d6 | 555 | |
d8c6822a | 556 | if (!f2fs_fill_dentries(ctx, &d, 0, fstr)) |
38594de7 | 557 | ctx->pos = NR_INLINE_DENTRY; |
201a05be | 558 | |
38594de7 | 559 | f2fs_put_page(ipage, 1); |
201a05be CY |
560 | return 0; |
561 | } | |
67f8cf3c JK |
562 | |
563 | int f2fs_inline_data_fiemap(struct inode *inode, | |
564 | struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) | |
565 | { | |
566 | __u64 byteaddr, ilen; | |
567 | __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | | |
568 | FIEMAP_EXTENT_LAST; | |
569 | struct node_info ni; | |
570 | struct page *ipage; | |
571 | int err = 0; | |
572 | ||
573 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); | |
574 | if (IS_ERR(ipage)) | |
575 | return PTR_ERR(ipage); | |
576 | ||
577 | if (!f2fs_has_inline_data(inode)) { | |
578 | err = -EAGAIN; | |
579 | goto out; | |
580 | } | |
581 | ||
582 | ilen = min_t(size_t, MAX_INLINE_DATA, i_size_read(inode)); | |
583 | if (start >= ilen) | |
584 | goto out; | |
585 | if (start + len < ilen) | |
586 | ilen = start + len; | |
587 | ilen -= start; | |
588 | ||
589 | get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); | |
590 | byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; | |
591 | byteaddr += (char *)inline_data_addr(ipage) - (char *)F2FS_INODE(ipage); | |
592 | err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); | |
593 | out: | |
594 | f2fs_put_page(ipage, 1); | |
595 | return err; | |
596 | } |