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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" | |
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 | ||
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 | |
fec1d657 | 77 | f2fs_wait_on_page_writeback(ipage, NODE, 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) { | |
136 | f2fs_put_dnode(dn); | |
137 | return err; | |
138 | } | |
139 | ||
140 | fio.version = ni.version; | |
141 | ||
4dbe38dc CY |
142 | if (unlikely(dn->data_blkaddr != NEW_ADDR)) { |
143 | f2fs_put_dnode(dn); | |
144 | set_sbi_flag(fio.sbi, SBI_NEED_FSCK); | |
145 | f2fs_msg(fio.sbi->sb, KERN_WARNING, | |
146 | "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, " | |
147 | "run fsck to fix.", | |
148 | __func__, dn->inode->i_ino, dn->data_blkaddr); | |
149 | return -EINVAL; | |
150 | } | |
151 | ||
85ead818 | 152 | f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page)); |
b3d208f9 | 153 | |
4d57b86d | 154 | f2fs_do_read_inline_data(page, dn->inode_page); |
6282adbf JK |
155 | set_page_dirty(page); |
156 | ||
158c194c JK |
157 | /* clear dirty state */ |
158 | dirty = clear_page_dirty_for_io(page); | |
159 | ||
e18c65b2 HL |
160 | /* write data page to try to make data consistent */ |
161 | set_page_writeback(page); | |
17c50035 | 162 | ClearPageError(page); |
7a9d7548 | 163 | fio.old_blkaddr = dn->data_blkaddr; |
ef095d19 | 164 | set_inode_flag(dn->inode, FI_HOT_DATA); |
4d57b86d | 165 | f2fs_outplace_write_data(dn, &fio); |
fec1d657 | 166 | f2fs_wait_on_page_writeback(page, DATA, true); |
933439c8 | 167 | if (dirty) { |
158c194c | 168 | inode_dec_dirty_pages(dn->inode); |
4d57b86d | 169 | f2fs_remove_dirty_inode(dn->inode); |
933439c8 | 170 | } |
e18c65b2 | 171 | |
95f5b0fc | 172 | /* this converted inline_data should be recovered. */ |
91942321 | 173 | set_inode_flag(dn->inode, FI_APPEND_WRITE); |
95f5b0fc | 174 | |
e18c65b2 | 175 | /* clear inline data and flag after data writeback */ |
4d57b86d | 176 | f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0); |
2049d4fc | 177 | clear_inline_node(dn->inode_page); |
b3d208f9 | 178 | clear_out: |
b3d208f9 | 179 | stat_dec_inline_inode(dn->inode); |
bd4667cb | 180 | clear_inode_flag(dn->inode, FI_INLINE_DATA); |
b3d208f9 JK |
181 | f2fs_put_dnode(dn); |
182 | return 0; | |
e18c65b2 HL |
183 | } |
184 | ||
b3d208f9 | 185 | int f2fs_convert_inline_inode(struct inode *inode) |
e18c65b2 | 186 | { |
b3d208f9 JK |
187 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
188 | struct dnode_of_data dn; | |
189 | struct page *ipage, *page; | |
190 | int err = 0; | |
e18c65b2 | 191 | |
b9d777b8 JK |
192 | if (!f2fs_has_inline_data(inode)) |
193 | return 0; | |
194 | ||
300e129c | 195 | page = f2fs_grab_cache_page(inode->i_mapping, 0, false); |
b3d208f9 JK |
196 | if (!page) |
197 | return -ENOMEM; | |
e18c65b2 | 198 | |
b3d208f9 JK |
199 | f2fs_lock_op(sbi); |
200 | ||
4d57b86d | 201 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
b3d208f9 | 202 | if (IS_ERR(ipage)) { |
6d20aff8 JK |
203 | err = PTR_ERR(ipage); |
204 | goto out; | |
b067ba1f | 205 | } |
e18c65b2 | 206 | |
b3d208f9 JK |
207 | set_new_dnode(&dn, inode, ipage, ipage, 0); |
208 | ||
209 | if (f2fs_has_inline_data(inode)) | |
210 | err = f2fs_convert_inline_page(&dn, page); | |
211 | ||
212 | f2fs_put_dnode(&dn); | |
6d20aff8 | 213 | out: |
b3d208f9 JK |
214 | f2fs_unlock_op(sbi); |
215 | ||
216 | f2fs_put_page(page, 1); | |
2a340760 | 217 | |
2c4db1a6 | 218 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 219 | |
e18c65b2 HL |
220 | return err; |
221 | } | |
222 | ||
b3d208f9 | 223 | int f2fs_write_inline_data(struct inode *inode, struct page *page) |
e18c65b2 HL |
224 | { |
225 | void *src_addr, *dst_addr; | |
e18c65b2 HL |
226 | struct dnode_of_data dn; |
227 | int err; | |
228 | ||
229 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 230 | err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
e18c65b2 HL |
231 | if (err) |
232 | return err; | |
e18c65b2 | 233 | |
c08a690b | 234 | if (!f2fs_has_inline_data(inode)) { |
b3d208f9 JK |
235 | f2fs_put_dnode(&dn); |
236 | return -EAGAIN; | |
c08a690b JK |
237 | } |
238 | ||
b3d208f9 JK |
239 | f2fs_bug_on(F2FS_I_SB(inode), page->index); |
240 | ||
fec1d657 | 241 | f2fs_wait_on_page_writeback(dn.inode_page, NODE, true); |
f1e33a04 | 242 | src_addr = kmap_atomic(page); |
f2470371 CY |
243 | dst_addr = inline_data_addr(inode, dn.inode_page); |
244 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); | |
f1e33a04 | 245 | kunmap_atomic(src_addr); |
ee6d182f | 246 | set_page_dirty(dn.inode_page); |
e18c65b2 | 247 | |
4d57b86d | 248 | f2fs_clear_radix_tree_dirty_tag(page); |
0abd8e70 | 249 | |
91942321 JK |
250 | set_inode_flag(inode, FI_APPEND_WRITE); |
251 | set_inode_flag(inode, FI_DATA_EXIST); | |
b3d208f9 | 252 | |
2049d4fc | 253 | clear_inline_node(dn.inode_page); |
e18c65b2 | 254 | f2fs_put_dnode(&dn); |
e18c65b2 HL |
255 | return 0; |
256 | } | |
1e1bb4ba | 257 | |
4d57b86d | 258 | bool f2fs_recover_inline_data(struct inode *inode, struct page *npage) |
1e1bb4ba | 259 | { |
4081363f | 260 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1e1bb4ba JK |
261 | struct f2fs_inode *ri = NULL; |
262 | void *src_addr, *dst_addr; | |
263 | struct page *ipage; | |
264 | ||
265 | /* | |
266 | * The inline_data recovery policy is as follows. | |
267 | * [prev.] [next] of inline_data flag | |
268 | * o o -> recover inline_data | |
269 | * o x -> remove inline_data, and then recover data blocks | |
270 | * x o -> remove inline_data, and then recover inline_data | |
271 | * x x -> recover data blocks | |
272 | */ | |
273 | if (IS_INODE(npage)) | |
274 | ri = F2FS_INODE(npage); | |
275 | ||
276 | if (f2fs_has_inline_data(inode) && | |
0342fd30 | 277 | ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
1e1bb4ba | 278 | process_inline: |
4d57b86d | 279 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
9850cf4a | 280 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
1e1bb4ba | 281 | |
fec1d657 | 282 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
54b591df | 283 | |
f2470371 CY |
284 | src_addr = inline_data_addr(inode, npage); |
285 | dst_addr = inline_data_addr(inode, ipage); | |
286 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); | |
b3d208f9 | 287 | |
91942321 JK |
288 | set_inode_flag(inode, FI_INLINE_DATA); |
289 | set_inode_flag(inode, FI_DATA_EXIST); | |
b3d208f9 | 290 | |
ee6d182f | 291 | set_page_dirty(ipage); |
1e1bb4ba | 292 | f2fs_put_page(ipage, 1); |
0342fd30 | 293 | return true; |
1e1bb4ba JK |
294 | } |
295 | ||
296 | if (f2fs_has_inline_data(inode)) { | |
4d57b86d | 297 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
9850cf4a | 298 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
4d57b86d | 299 | f2fs_truncate_inline_inode(inode, ipage, 0); |
bd4667cb | 300 | clear_inode_flag(inode, FI_INLINE_DATA); |
1e1bb4ba | 301 | f2fs_put_page(ipage, 1); |
0342fd30 | 302 | } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
4d57b86d | 303 | if (f2fs_truncate_blocks(inode, 0, false)) |
545fe421 | 304 | return false; |
1e1bb4ba JK |
305 | goto process_inline; |
306 | } | |
0342fd30 | 307 | return false; |
1e1bb4ba | 308 | } |
201a05be | 309 | |
4d57b86d | 310 | struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, |
0b81d077 | 311 | struct fscrypt_name *fname, struct page **res_page) |
201a05be CY |
312 | { |
313 | struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); | |
6e22c691 | 314 | struct qstr name = FSTR_TO_QSTR(&fname->disk_name); |
201a05be | 315 | struct f2fs_dir_entry *de; |
7b3cd7d6 | 316 | struct f2fs_dentry_ptr d; |
4e6ebf6d | 317 | struct page *ipage; |
f2470371 | 318 | void *inline_dentry; |
6e22c691 | 319 | f2fs_hash_t namehash; |
201a05be | 320 | |
4d57b86d | 321 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
42d96401 JK |
322 | if (IS_ERR(ipage)) { |
323 | *res_page = ipage; | |
201a05be | 324 | return NULL; |
42d96401 | 325 | } |
201a05be | 326 | |
6332cd32 | 327 | namehash = f2fs_dentry_hash(&name, fname); |
6e22c691 | 328 | |
f2470371 | 329 | inline_dentry = inline_data_addr(dir, ipage); |
201a05be | 330 | |
f2470371 | 331 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
4d57b86d | 332 | de = f2fs_find_target_dentry(fname, namehash, NULL, &d); |
201a05be | 333 | unlock_page(ipage); |
4e6ebf6d JK |
334 | if (de) |
335 | *res_page = ipage; | |
336 | else | |
337 | f2fs_put_page(ipage, 0); | |
338 | ||
201a05be CY |
339 | return de; |
340 | } | |
341 | ||
4d57b86d | 342 | int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, |
201a05be CY |
343 | struct page *ipage) |
344 | { | |
062a3e7b | 345 | struct f2fs_dentry_ptr d; |
f2470371 | 346 | void *inline_dentry; |
201a05be | 347 | |
f2470371 | 348 | inline_dentry = inline_data_addr(inode, ipage); |
201a05be | 349 | |
f2470371 | 350 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
4d57b86d | 351 | f2fs_do_make_empty_dir(inode, parent, &d); |
201a05be CY |
352 | |
353 | set_page_dirty(ipage); | |
354 | ||
355 | /* update i_size to MAX_INLINE_DATA */ | |
f2470371 CY |
356 | if (i_size_read(inode) < MAX_INLINE_DATA(inode)) |
357 | f2fs_i_size_write(inode, MAX_INLINE_DATA(inode)); | |
201a05be CY |
358 | return 0; |
359 | } | |
360 | ||
470f00e9 CY |
361 | /* |
362 | * NOTE: ipage is grabbed by caller, but if any error occurs, we should | |
363 | * release ipage in this function. | |
364 | */ | |
675f10bd | 365 | static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, |
f2470371 | 366 | void *inline_dentry) |
201a05be CY |
367 | { |
368 | struct page *page; | |
369 | struct dnode_of_data dn; | |
370 | struct f2fs_dentry_block *dentry_blk; | |
76a9dd85 | 371 | struct f2fs_dentry_ptr src, dst; |
201a05be CY |
372 | int err; |
373 | ||
300e129c | 374 | page = f2fs_grab_cache_page(dir->i_mapping, 0, false); |
470f00e9 CY |
375 | if (!page) { |
376 | f2fs_put_page(ipage, 1); | |
201a05be | 377 | return -ENOMEM; |
470f00e9 | 378 | } |
201a05be CY |
379 | |
380 | set_new_dnode(&dn, dir, ipage, NULL, 0); | |
381 | err = f2fs_reserve_block(&dn, 0); | |
382 | if (err) | |
383 | goto out; | |
384 | ||
4dbe38dc CY |
385 | if (unlikely(dn.data_blkaddr != NEW_ADDR)) { |
386 | f2fs_put_dnode(&dn); | |
387 | set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK); | |
388 | f2fs_msg(F2FS_P_SB(page)->sb, KERN_WARNING, | |
389 | "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, " | |
390 | "run fsck to fix.", | |
391 | __func__, dir->i_ino, dn.data_blkaddr); | |
392 | err = -EINVAL; | |
393 | goto out; | |
394 | } | |
395 | ||
fec1d657 | 396 | f2fs_wait_on_page_writeback(page, DATA, true); |
201a05be | 397 | |
bdbc90fa | 398 | dentry_blk = page_address(page); |
201a05be | 399 | |
f2470371 CY |
400 | make_dentry_ptr_inline(dir, &src, inline_dentry); |
401 | make_dentry_ptr_block(dir, &dst, dentry_blk); | |
76a9dd85 | 402 | |
201a05be | 403 | /* copy data from inline dentry block to new dentry block */ |
76a9dd85 CY |
404 | memcpy(dst.bitmap, src.bitmap, src.nr_bitmap); |
405 | memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap); | |
4ec17d68 CY |
406 | /* |
407 | * we do not need to zero out remainder part of dentry and filename | |
408 | * field, since we have used bitmap for marking the usage status of | |
409 | * them, besides, we can also ignore copying/zeroing reserved space | |
410 | * of dentry block, because them haven't been used so far. | |
411 | */ | |
76a9dd85 CY |
412 | memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max); |
413 | memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN); | |
201a05be | 414 | |
237c0790 JK |
415 | if (!PageUptodate(page)) |
416 | SetPageUptodate(page); | |
201a05be CY |
417 | set_page_dirty(page); |
418 | ||
419 | /* clear inline dir and flag after data writeback */ | |
4d57b86d | 420 | f2fs_truncate_inline_inode(dir, ipage, 0); |
b3d208f9 | 421 | |
3289c061 | 422 | stat_dec_inline_dir(dir); |
91942321 | 423 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
201a05be | 424 | |
205b9822 | 425 | f2fs_i_depth_write(dir, 1); |
ee6d182f | 426 | if (i_size_read(dir) < PAGE_SIZE) |
fc9581c8 | 427 | f2fs_i_size_write(dir, PAGE_SIZE); |
201a05be CY |
428 | out: |
429 | f2fs_put_page(page, 1); | |
430 | return err; | |
431 | } | |
432 | ||
f2470371 | 433 | static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry) |
675f10bd CY |
434 | { |
435 | struct f2fs_dentry_ptr d; | |
436 | unsigned long bit_pos = 0; | |
437 | int err = 0; | |
438 | ||
f2470371 | 439 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
675f10bd CY |
440 | |
441 | while (bit_pos < d.max) { | |
442 | struct f2fs_dir_entry *de; | |
443 | struct qstr new_name; | |
444 | nid_t ino; | |
445 | umode_t fake_mode; | |
446 | ||
447 | if (!test_bit_le(bit_pos, d.bitmap)) { | |
448 | bit_pos++; | |
449 | continue; | |
450 | } | |
451 | ||
452 | de = &d.dentry[bit_pos]; | |
a4a13f58 CY |
453 | |
454 | if (unlikely(!de->name_len)) { | |
455 | bit_pos++; | |
456 | continue; | |
457 | } | |
458 | ||
675f10bd | 459 | new_name.name = d.filename[bit_pos]; |
0c0b471e | 460 | new_name.len = le16_to_cpu(de->name_len); |
675f10bd CY |
461 | |
462 | ino = le32_to_cpu(de->ino); | |
4d57b86d | 463 | fake_mode = f2fs_get_de_type(de) << S_SHIFT; |
675f10bd | 464 | |
9421d570 | 465 | err = f2fs_add_regular_entry(dir, &new_name, NULL, NULL, |
675f10bd CY |
466 | ino, fake_mode); |
467 | if (err) | |
468 | goto punch_dentry_pages; | |
469 | ||
675f10bd CY |
470 | bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); |
471 | } | |
472 | return 0; | |
473 | punch_dentry_pages: | |
474 | truncate_inode_pages(&dir->i_data, 0); | |
4d57b86d CY |
475 | f2fs_truncate_blocks(dir, 0, false); |
476 | f2fs_remove_dirty_inode(dir); | |
675f10bd CY |
477 | return err; |
478 | } | |
479 | ||
480 | static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, | |
f2470371 | 481 | void *inline_dentry) |
675f10bd | 482 | { |
f2470371 | 483 | void *backup_dentry; |
675f10bd CY |
484 | int err; |
485 | ||
1ecc0c5c | 486 | backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), |
f2470371 | 487 | MAX_INLINE_DATA(dir), GFP_F2FS_ZERO); |
8975bdf4 CY |
488 | if (!backup_dentry) { |
489 | f2fs_put_page(ipage, 1); | |
675f10bd | 490 | return -ENOMEM; |
8975bdf4 | 491 | } |
675f10bd | 492 | |
f2470371 | 493 | memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir)); |
4d57b86d | 494 | f2fs_truncate_inline_inode(dir, ipage, 0); |
675f10bd CY |
495 | |
496 | unlock_page(ipage); | |
497 | ||
498 | err = f2fs_add_inline_entries(dir, backup_dentry); | |
499 | if (err) | |
500 | goto recover; | |
501 | ||
502 | lock_page(ipage); | |
503 | ||
504 | stat_dec_inline_dir(dir); | |
91942321 | 505 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
675f10bd CY |
506 | kfree(backup_dentry); |
507 | return 0; | |
508 | recover: | |
509 | lock_page(ipage); | |
6aead161 | 510 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
f2470371 | 511 | memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir)); |
205b9822 | 512 | f2fs_i_depth_write(dir, 0); |
f2470371 | 513 | f2fs_i_size_write(dir, MAX_INLINE_DATA(dir)); |
ee6d182f | 514 | set_page_dirty(ipage); |
675f10bd CY |
515 | f2fs_put_page(ipage, 1); |
516 | ||
517 | kfree(backup_dentry); | |
518 | return err; | |
519 | } | |
520 | ||
521 | static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage, | |
f2470371 | 522 | void *inline_dentry) |
675f10bd CY |
523 | { |
524 | if (!F2FS_I(dir)->i_dir_level) | |
525 | return f2fs_move_inline_dirents(dir, ipage, inline_dentry); | |
526 | else | |
527 | return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry); | |
528 | } | |
529 | ||
9421d570 CY |
530 | int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name, |
531 | const struct qstr *orig_name, | |
532 | struct inode *inode, nid_t ino, umode_t mode) | |
201a05be CY |
533 | { |
534 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
535 | struct page *ipage; | |
536 | unsigned int bit_pos; | |
537 | f2fs_hash_t name_hash; | |
f2470371 | 538 | void *inline_dentry = NULL; |
3b4d732a | 539 | struct f2fs_dentry_ptr d; |
9421d570 | 540 | int slots = GET_DENTRY_SLOTS(new_name->len); |
510022a8 | 541 | struct page *page = NULL; |
201a05be | 542 | int err = 0; |
201a05be | 543 | |
4d57b86d | 544 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
201a05be CY |
545 | if (IS_ERR(ipage)) |
546 | return PTR_ERR(ipage); | |
547 | ||
f2470371 CY |
548 | inline_dentry = inline_data_addr(dir, ipage); |
549 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 | 550 | |
4d57b86d | 551 | bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max); |
76a9dd85 | 552 | if (bit_pos >= d.max) { |
a005774c | 553 | err = f2fs_convert_inline_dir(dir, ipage, inline_dentry); |
470f00e9 CY |
554 | if (err) |
555 | return err; | |
556 | err = -EAGAIN; | |
201a05be CY |
557 | goto out; |
558 | } | |
559 | ||
510022a8 JK |
560 | if (inode) { |
561 | down_write(&F2FS_I(inode)->i_sem); | |
4d57b86d | 562 | page = f2fs_init_inode_metadata(inode, dir, new_name, |
9421d570 | 563 | orig_name, ipage); |
510022a8 JK |
564 | if (IS_ERR(page)) { |
565 | err = PTR_ERR(page); | |
566 | goto fail; | |
567 | } | |
201a05be | 568 | } |
bce8d112 | 569 | |
fec1d657 | 570 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
3b4d732a | 571 | |
6332cd32 | 572 | name_hash = f2fs_dentry_hash(new_name, NULL); |
9421d570 | 573 | f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos); |
3b4d732a | 574 | |
201a05be CY |
575 | set_page_dirty(ipage); |
576 | ||
577 | /* we don't need to mark_inode_dirty now */ | |
510022a8 | 578 | if (inode) { |
205b9822 | 579 | f2fs_i_pino_write(inode, dir->i_ino); |
510022a8 JK |
580 | f2fs_put_page(page, 1); |
581 | } | |
201a05be | 582 | |
4d57b86d | 583 | f2fs_update_parent_metadata(dir, inode, 0); |
201a05be | 584 | fail: |
510022a8 JK |
585 | if (inode) |
586 | up_write(&F2FS_I(inode)->i_sem); | |
201a05be CY |
587 | out: |
588 | f2fs_put_page(ipage, 1); | |
589 | return err; | |
590 | } | |
591 | ||
592 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, | |
593 | struct inode *dir, struct inode *inode) | |
594 | { | |
76a9dd85 | 595 | struct f2fs_dentry_ptr d; |
f2470371 | 596 | void *inline_dentry; |
201a05be CY |
597 | int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); |
598 | unsigned int bit_pos; | |
599 | int i; | |
600 | ||
601 | lock_page(page); | |
fec1d657 | 602 | f2fs_wait_on_page_writeback(page, NODE, true); |
201a05be | 603 | |
f2470371 CY |
604 | inline_dentry = inline_data_addr(dir, page); |
605 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 CY |
606 | |
607 | bit_pos = dentry - d.dentry; | |
201a05be | 608 | for (i = 0; i < slots; i++) |
76a9dd85 | 609 | __clear_bit_le(bit_pos + i, d.bitmap); |
201a05be CY |
610 | |
611 | set_page_dirty(page); | |
9f7c45cc | 612 | f2fs_put_page(page, 1); |
201a05be | 613 | |
078cd827 | 614 | dir->i_ctime = dir->i_mtime = current_time(dir); |
7c45729a | 615 | f2fs_mark_inode_dirty_sync(dir, false); |
201a05be CY |
616 | |
617 | if (inode) | |
9f7c45cc | 618 | f2fs_drop_nlink(dir, inode); |
201a05be CY |
619 | } |
620 | ||
621 | bool f2fs_empty_inline_dir(struct inode *dir) | |
622 | { | |
623 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
624 | struct page *ipage; | |
625 | unsigned int bit_pos = 2; | |
f2470371 | 626 | void *inline_dentry; |
76a9dd85 | 627 | struct f2fs_dentry_ptr d; |
201a05be | 628 | |
4d57b86d | 629 | ipage = f2fs_get_node_page(sbi, dir->i_ino); |
201a05be CY |
630 | if (IS_ERR(ipage)) |
631 | return false; | |
632 | ||
f2470371 CY |
633 | inline_dentry = inline_data_addr(dir, ipage); |
634 | make_dentry_ptr_inline(dir, &d, inline_dentry); | |
76a9dd85 CY |
635 | |
636 | bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos); | |
201a05be CY |
637 | |
638 | f2fs_put_page(ipage, 1); | |
639 | ||
76a9dd85 | 640 | if (bit_pos < d.max) |
201a05be CY |
641 | return false; |
642 | ||
643 | return true; | |
644 | } | |
645 | ||
d8c6822a | 646 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, |
0b81d077 | 647 | struct fscrypt_str *fstr) |
201a05be CY |
648 | { |
649 | struct inode *inode = file_inode(file); | |
201a05be | 650 | struct page *ipage = NULL; |
7b3cd7d6 | 651 | struct f2fs_dentry_ptr d; |
f2470371 | 652 | void *inline_dentry = NULL; |
ed6bd4b1 | 653 | int err; |
201a05be | 654 | |
76a9dd85 CY |
655 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
656 | ||
657 | if (ctx->pos == d.max) | |
201a05be CY |
658 | return 0; |
659 | ||
4d57b86d | 660 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
201a05be CY |
661 | if (IS_ERR(ipage)) |
662 | return PTR_ERR(ipage); | |
663 | ||
f2470371 | 664 | inline_dentry = inline_data_addr(inode, ipage); |
201a05be | 665 | |
64c24ecb | 666 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
7b3cd7d6 | 667 | |
ed6bd4b1 CY |
668 | err = f2fs_fill_dentries(ctx, &d, 0, fstr); |
669 | if (!err) | |
76a9dd85 | 670 | ctx->pos = d.max; |
201a05be | 671 | |
38594de7 | 672 | f2fs_put_page(ipage, 1); |
ed6bd4b1 | 673 | return err < 0 ? err : 0; |
201a05be | 674 | } |
67f8cf3c JK |
675 | |
676 | int f2fs_inline_data_fiemap(struct inode *inode, | |
677 | struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) | |
678 | { | |
679 | __u64 byteaddr, ilen; | |
680 | __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | | |
681 | FIEMAP_EXTENT_LAST; | |
682 | struct node_info ni; | |
683 | struct page *ipage; | |
684 | int err = 0; | |
685 | ||
4d57b86d | 686 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
67f8cf3c JK |
687 | if (IS_ERR(ipage)) |
688 | return PTR_ERR(ipage); | |
689 | ||
690 | if (!f2fs_has_inline_data(inode)) { | |
691 | err = -EAGAIN; | |
692 | goto out; | |
693 | } | |
694 | ||
f2470371 | 695 | ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode)); |
67f8cf3c JK |
696 | if (start >= ilen) |
697 | goto out; | |
698 | if (start + len < ilen) | |
699 | ilen = start + len; | |
700 | ilen -= start; | |
701 | ||
7735730d CY |
702 | err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); |
703 | if (err) | |
704 | goto out; | |
705 | ||
67f8cf3c | 706 | byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; |
f2470371 CY |
707 | byteaddr += (char *)inline_data_addr(inode, ipage) - |
708 | (char *)F2FS_INODE(ipage); | |
67f8cf3c JK |
709 | err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); |
710 | out: | |
711 | f2fs_put_page(ipage, 1); | |
712 | return err; | |
713 | } |