Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
fbfa2cc5 JK |
2 | * fs/f2fs/file.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/stat.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/writeback.h> | |
ae51fb31 | 16 | #include <linux/blkdev.h> |
fbfa2cc5 JK |
17 | #include <linux/falloc.h> |
18 | #include <linux/types.h> | |
e9750824 | 19 | #include <linux/compat.h> |
fbfa2cc5 JK |
20 | #include <linux/uaccess.h> |
21 | #include <linux/mount.h> | |
7f7670fe | 22 | #include <linux/pagevec.h> |
8da4b8c4 | 23 | #include <linux/uuid.h> |
fbfa2cc5 JK |
24 | |
25 | #include "f2fs.h" | |
26 | #include "node.h" | |
27 | #include "segment.h" | |
28 | #include "xattr.h" | |
29 | #include "acl.h" | |
c1c1b583 | 30 | #include "gc.h" |
db9f7c1a | 31 | #include "trace.h" |
a2a4a7e4 | 32 | #include <trace/events/f2fs.h> |
fbfa2cc5 JK |
33 | |
34 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, | |
35 | struct vm_fault *vmf) | |
36 | { | |
37 | struct page *page = vmf->page; | |
6131ffaa | 38 | struct inode *inode = file_inode(vma->vm_file); |
4081363f | 39 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 40 | struct dnode_of_data dn; |
e479556b | 41 | int err; |
fbfa2cc5 | 42 | |
fbfa2cc5 | 43 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
44 | |
45 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 46 | |
fbfa2cc5 | 47 | /* block allocation */ |
e479556b | 48 | f2fs_lock_op(sbi); |
b3d208f9 | 49 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 50 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
51 | if (err) { |
52 | f2fs_unlock_op(sbi); | |
b600965c | 53 | goto out; |
9ba69cf9 JK |
54 | } |
55 | f2fs_put_dnode(&dn); | |
56 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 57 | |
2c4db1a6 | 58 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 59 | |
9851e6e1 | 60 | file_update_time(vma->vm_file); |
fbfa2cc5 | 61 | lock_page(page); |
6bacf52f | 62 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 63 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 64 | !PageUptodate(page))) { |
fbfa2cc5 JK |
65 | unlock_page(page); |
66 | err = -EFAULT; | |
67 | goto out; | |
68 | } | |
69 | ||
70 | /* | |
71 | * check to see if the page is mapped already (no holes) | |
72 | */ | |
73 | if (PageMappedToDisk(page)) | |
9851e6e1 | 74 | goto mapped; |
fbfa2cc5 JK |
75 | |
76 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 77 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 78 | i_size_read(inode)) { |
fbfa2cc5 | 79 | unsigned offset; |
09cbfeaf KS |
80 | offset = i_size_read(inode) & ~PAGE_MASK; |
81 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
82 | } |
83 | set_page_dirty(page); | |
237c0790 JK |
84 | if (!PageUptodate(page)) |
85 | SetPageUptodate(page); | |
fbfa2cc5 | 86 | |
e943a10d | 87 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
88 | mapped: |
89 | /* fill the page */ | |
fec1d657 | 90 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
91 | |
92 | /* wait for GCed encrypted page writeback */ | |
93 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) | |
94 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); | |
95 | ||
5b339124 CY |
96 | /* if gced page is attached, don't write to cold segment */ |
97 | clear_cold_data(page); | |
fbfa2cc5 JK |
98 | out: |
99 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 100 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 JK |
101 | return block_page_mkwrite_return(err); |
102 | } | |
103 | ||
104 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
692bb55d | 105 | .fault = filemap_fault, |
f1820361 | 106 | .map_pages = filemap_map_pages, |
692bb55d | 107 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
108 | }; |
109 | ||
354a3399 JK |
110 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
111 | { | |
112 | struct dentry *dentry; | |
113 | ||
114 | inode = igrab(inode); | |
115 | dentry = d_find_any_alias(inode); | |
116 | iput(inode); | |
117 | if (!dentry) | |
118 | return 0; | |
119 | ||
e7d55452 | 120 | if (update_dent_inode(inode, inode, &dentry->d_name)) { |
f0947e5c JK |
121 | dput(dentry); |
122 | return 0; | |
123 | } | |
354a3399 | 124 | |
f0947e5c JK |
125 | *pino = parent_ino(dentry); |
126 | dput(dentry); | |
354a3399 JK |
127 | return 1; |
128 | } | |
129 | ||
9d1589ef CY |
130 | static inline bool need_do_checkpoint(struct inode *inode) |
131 | { | |
4081363f | 132 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
133 | bool need_cp = false; |
134 | ||
135 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
136 | need_cp = true; | |
e7d55452 JK |
137 | else if (file_enc_name(inode) && need_dentry_mark(sbi, inode->i_ino)) |
138 | need_cp = true; | |
9d1589ef CY |
139 | else if (file_wrong_pino(inode)) |
140 | need_cp = true; | |
141 | else if (!space_for_roll_forward(sbi)) | |
142 | need_cp = true; | |
143 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
144 | need_cp = true; | |
145 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
146 | need_cp = true; | |
d5053a34 JK |
147 | else if (test_opt(sbi, FASTBOOT)) |
148 | need_cp = true; | |
a344b9fd JK |
149 | else if (sbi->active_logs == 2) |
150 | need_cp = true; | |
9d1589ef CY |
151 | |
152 | return need_cp; | |
153 | } | |
154 | ||
9c7bb702 CL |
155 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
156 | { | |
157 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
158 | bool ret = false; | |
159 | /* But we need to avoid that there are some inode updates */ | |
160 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
161 | ret = true; | |
162 | f2fs_put_page(i, 0); | |
163 | return ret; | |
164 | } | |
165 | ||
51455b19 CL |
166 | static void try_to_fix_pino(struct inode *inode) |
167 | { | |
168 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
169 | nid_t pino; | |
170 | ||
171 | down_write(&fi->i_sem); | |
172 | fi->xattr_ver = 0; | |
173 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && | |
174 | get_parent_ino(inode, &pino)) { | |
205b9822 | 175 | f2fs_i_pino_write(inode, pino); |
51455b19 | 176 | file_got_pino(inode); |
51455b19 | 177 | } |
ee6d182f | 178 | up_write(&fi->i_sem); |
51455b19 CL |
179 | } |
180 | ||
608514de JK |
181 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
182 | int datasync, bool atomic) | |
fbfa2cc5 JK |
183 | { |
184 | struct inode *inode = file->f_mapping->host; | |
4081363f | 185 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 186 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
187 | int ret = 0; |
188 | bool need_cp = false; | |
189 | struct writeback_control wbc = { | |
c81bf1c8 | 190 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
191 | .nr_to_write = LONG_MAX, |
192 | .for_reclaim = 0, | |
193 | }; | |
194 | ||
6bacf52f | 195 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
196 | return 0; |
197 | ||
a2a4a7e4 | 198 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
199 | |
200 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 201 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 202 | set_inode_flag(inode, FI_NEED_IPU); |
fbfa2cc5 | 203 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
91942321 | 204 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 205 | |
a2a4a7e4 NJ |
206 | if (ret) { |
207 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 208 | return ret; |
a2a4a7e4 | 209 | } |
fbfa2cc5 | 210 | |
9c7bb702 | 211 | /* if the inode is dirty, let's recover all the time */ |
26de9b11 | 212 | if (!datasync && !f2fs_skip_inode_update(inode)) { |
2286c020 | 213 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
214 | goto go_write; |
215 | } | |
216 | ||
6d99ba41 JK |
217 | /* |
218 | * if there is no written data, don't waste time to write recovery info. | |
219 | */ | |
91942321 | 220 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 221 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 222 | |
9c7bb702 CL |
223 | /* it may call write_inode just prior to fsync */ |
224 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 225 | goto go_write; |
19c9c466 | 226 | |
91942321 | 227 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 228 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
229 | goto flush_out; |
230 | goto out; | |
231 | } | |
19c9c466 | 232 | go_write: |
e5d2385e JK |
233 | /* |
234 | * Both of fdatasync() and fsync() are able to be recovered from | |
235 | * sudden-power-off. | |
236 | */ | |
91942321 | 237 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 238 | need_cp = need_do_checkpoint(inode); |
91942321 | 239 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 240 | |
fbfa2cc5 JK |
241 | if (need_cp) { |
242 | /* all the dirty node pages should be flushed for POR */ | |
243 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 244 | |
51455b19 CL |
245 | /* |
246 | * We've secured consistency through sync_fs. Following pino | |
247 | * will be used only for fsynced inodes after checkpoint. | |
248 | */ | |
249 | try_to_fix_pino(inode); | |
91942321 JK |
250 | clear_inode_flag(inode, FI_APPEND_WRITE); |
251 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
252 | goto out; |
253 | } | |
88bd02c9 | 254 | sync_nodes: |
26de9b11 | 255 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
256 | if (ret) |
257 | goto out; | |
51455b19 | 258 | |
871f599f | 259 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
260 | if (unlikely(f2fs_cp_error(sbi))) { |
261 | ret = -EIO; | |
871f599f | 262 | goto out; |
6d5a1495 | 263 | } |
871f599f | 264 | |
51455b19 | 265 | if (need_inode_block_update(sbi, ino)) { |
b56ab837 | 266 | f2fs_mark_inode_dirty_sync(inode); |
51455b19 CL |
267 | f2fs_write_inode(inode, NULL); |
268 | goto sync_nodes; | |
fbfa2cc5 | 269 | } |
51455b19 CL |
270 | |
271 | ret = wait_on_node_pages_writeback(sbi, ino); | |
272 | if (ret) | |
273 | goto out; | |
274 | ||
275 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 276 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 277 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 278 | flush_out: |
a49324f1 | 279 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 280 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
51455b19 | 281 | ret = f2fs_issue_flush(sbi); |
d0239e1b | 282 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 283 | out: |
a2a4a7e4 | 284 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 285 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
286 | return ret; |
287 | } | |
288 | ||
608514de JK |
289 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
290 | { | |
291 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
292 | } | |
293 | ||
7f7670fe JK |
294 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
295 | pgoff_t pgofs, int whence) | |
296 | { | |
297 | struct pagevec pvec; | |
298 | int nr_pages; | |
299 | ||
300 | if (whence != SEEK_DATA) | |
301 | return 0; | |
302 | ||
303 | /* find first dirty page index */ | |
304 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
305 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
306 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 307 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
308 | pagevec_release(&pvec); |
309 | return pgofs; | |
310 | } | |
311 | ||
312 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
313 | int whence) | |
314 | { | |
315 | switch (whence) { | |
316 | case SEEK_DATA: | |
317 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
318 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
319 | return true; | |
320 | break; | |
321 | case SEEK_HOLE: | |
322 | if (blkaddr == NULL_ADDR) | |
323 | return true; | |
324 | break; | |
325 | } | |
326 | return false; | |
327 | } | |
328 | ||
267378d4 CY |
329 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
330 | { | |
331 | struct inode *inode = file->f_mapping->host; | |
332 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
333 | struct dnode_of_data dn; | |
7f7670fe JK |
334 | pgoff_t pgofs, end_offset, dirty; |
335 | loff_t data_ofs = offset; | |
336 | loff_t isize; | |
267378d4 CY |
337 | int err = 0; |
338 | ||
5955102c | 339 | inode_lock(inode); |
267378d4 CY |
340 | |
341 | isize = i_size_read(inode); | |
342 | if (offset >= isize) | |
343 | goto fail; | |
344 | ||
345 | /* handle inline data case */ | |
622f28ae | 346 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
347 | if (whence == SEEK_HOLE) |
348 | data_ofs = isize; | |
349 | goto found; | |
350 | } | |
351 | ||
09cbfeaf | 352 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 353 | |
7f7670fe JK |
354 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
355 | ||
09cbfeaf | 356 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 357 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 358 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
359 | if (err && err != -ENOENT) { |
360 | goto fail; | |
361 | } else if (err == -ENOENT) { | |
e1c42045 | 362 | /* direct node does not exists */ |
267378d4 | 363 | if (whence == SEEK_DATA) { |
3cf45747 | 364 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
365 | continue; |
366 | } else { | |
367 | goto found; | |
368 | } | |
369 | } | |
370 | ||
81ca7350 | 371 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
372 | |
373 | /* find data/hole in dnode block */ | |
374 | for (; dn.ofs_in_node < end_offset; | |
375 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 376 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
377 | block_t blkaddr; |
378 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
379 | ||
7f7670fe | 380 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
381 | f2fs_put_dnode(&dn); |
382 | goto found; | |
383 | } | |
384 | } | |
385 | f2fs_put_dnode(&dn); | |
386 | } | |
387 | ||
388 | if (whence == SEEK_DATA) | |
389 | goto fail; | |
267378d4 | 390 | found: |
fe369bc8 JK |
391 | if (whence == SEEK_HOLE && data_ofs > isize) |
392 | data_ofs = isize; | |
5955102c | 393 | inode_unlock(inode); |
267378d4 CY |
394 | return vfs_setpos(file, data_ofs, maxbytes); |
395 | fail: | |
5955102c | 396 | inode_unlock(inode); |
267378d4 CY |
397 | return -ENXIO; |
398 | } | |
399 | ||
400 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
401 | { | |
402 | struct inode *inode = file->f_mapping->host; | |
403 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
404 | ||
405 | switch (whence) { | |
406 | case SEEK_SET: | |
407 | case SEEK_CUR: | |
408 | case SEEK_END: | |
409 | return generic_file_llseek_size(file, offset, whence, | |
410 | maxbytes, i_size_read(inode)); | |
411 | case SEEK_DATA: | |
412 | case SEEK_HOLE: | |
0b4c5afd JK |
413 | if (offset < 0) |
414 | return -ENXIO; | |
267378d4 CY |
415 | return f2fs_seek_block(file, offset, whence); |
416 | } | |
417 | ||
418 | return -EINVAL; | |
419 | } | |
420 | ||
fbfa2cc5 JK |
421 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
422 | { | |
b3d208f9 | 423 | struct inode *inode = file_inode(file); |
b9d777b8 | 424 | int err; |
b3d208f9 | 425 | |
fcc85a4d | 426 | if (f2fs_encrypted_inode(inode)) { |
0b81d077 | 427 | err = fscrypt_get_encryption_info(inode); |
fcc85a4d JK |
428 | if (err) |
429 | return 0; | |
ae108668 CY |
430 | if (!f2fs_encrypted_inode(inode)) |
431 | return -ENOKEY; | |
fcc85a4d JK |
432 | } |
433 | ||
b3d208f9 | 434 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
435 | err = f2fs_convert_inline_inode(inode); |
436 | if (err) | |
437 | return err; | |
b3d208f9 | 438 | |
fbfa2cc5 JK |
439 | file_accessed(file); |
440 | vma->vm_ops = &f2fs_file_vm_ops; | |
441 | return 0; | |
442 | } | |
443 | ||
fcc85a4d JK |
444 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
445 | { | |
446 | int ret = generic_file_open(inode, filp); | |
33b13951 | 447 | struct dentry *dir; |
fcc85a4d JK |
448 | |
449 | if (!ret && f2fs_encrypted_inode(inode)) { | |
0b81d077 | 450 | ret = fscrypt_get_encryption_info(inode); |
fcc85a4d | 451 | if (ret) |
ae108668 | 452 | return -EACCES; |
0b81d077 | 453 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 454 | return -ENOKEY; |
fcc85a4d | 455 | } |
33b13951 JK |
456 | dir = dget_parent(file_dentry(filp)); |
457 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
458 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
459 | dput(dir); | |
8074bb51 | 460 | return -EPERM; |
33b13951 JK |
461 | } |
462 | dput(dir); | |
fcc85a4d JK |
463 | return ret; |
464 | } | |
465 | ||
b292dcab | 466 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 467 | { |
4081363f | 468 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 469 | struct f2fs_node *raw_node; |
19b2c30d | 470 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
471 | __le32 *addr; |
472 | ||
45590710 | 473 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
474 | addr = blkaddr_in_node(raw_node) + ofs; |
475 | ||
6c311ec6 | 476 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
477 | block_t blkaddr = le32_to_cpu(*addr); |
478 | if (blkaddr == NULL_ADDR) | |
479 | continue; | |
480 | ||
e1509cf2 | 481 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 482 | set_data_blkaddr(dn); |
fbfa2cc5 | 483 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 484 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 485 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
486 | nr_free++; |
487 | } | |
19b2c30d | 488 | |
fbfa2cc5 | 489 | if (nr_free) { |
19b2c30d CY |
490 | pgoff_t fofs; |
491 | /* | |
492 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
493 | * we will invalidate all blkaddr in the whole range. | |
494 | */ | |
495 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 496 | dn->inode) + ofs; |
19b2c30d | 497 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 498 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
499 | } |
500 | dn->ofs_in_node = ofs; | |
51dd6249 | 501 | |
d0239e1b | 502 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
503 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
504 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
505 | return nr_free; |
506 | } | |
507 | ||
508 | void truncate_data_blocks(struct dnode_of_data *dn) | |
509 | { | |
510 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
511 | } | |
512 | ||
0bfcfcca | 513 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 514 | bool cache_only) |
fbfa2cc5 | 515 | { |
09cbfeaf KS |
516 | unsigned offset = from & (PAGE_SIZE - 1); |
517 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 518 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
519 | struct page *page; |
520 | ||
43f3eae1 | 521 | if (!offset && !cache_only) |
b3d208f9 | 522 | return 0; |
fbfa2cc5 | 523 | |
43f3eae1 | 524 | if (cache_only) { |
a56c7c6f | 525 | page = f2fs_grab_cache_page(mapping, index, false); |
43f3eae1 JK |
526 | if (page && PageUptodate(page)) |
527 | goto truncate_out; | |
528 | f2fs_put_page(page, 1); | |
b3d208f9 | 529 | return 0; |
43f3eae1 | 530 | } |
fbfa2cc5 | 531 | |
a56c7c6f | 532 | page = get_lock_data_page(inode, index, true); |
43f3eae1 JK |
533 | if (IS_ERR(page)) |
534 | return 0; | |
535 | truncate_out: | |
fec1d657 | 536 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 537 | zero_user(page, offset, PAGE_SIZE - offset); |
0b81d077 JK |
538 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
539 | !S_ISREG(inode->i_mode)) | |
0bfcfcca | 540 | set_page_dirty(page); |
fbfa2cc5 | 541 | f2fs_put_page(page, 1); |
b3d208f9 | 542 | return 0; |
fbfa2cc5 JK |
543 | } |
544 | ||
764aa3e9 | 545 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 546 | { |
4081363f | 547 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
548 | unsigned int blocksize = inode->i_sb->s_blocksize; |
549 | struct dnode_of_data dn; | |
550 | pgoff_t free_from; | |
9ffe0fb5 | 551 | int count = 0, err = 0; |
b3d208f9 | 552 | struct page *ipage; |
0bfcfcca | 553 | bool truncate_page = false; |
fbfa2cc5 | 554 | |
51dd6249 NJ |
555 | trace_f2fs_truncate_blocks_enter(inode, from); |
556 | ||
f7ef9b83 | 557 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 558 | |
09210c97 CY |
559 | if (free_from >= sbi->max_file_blocks) |
560 | goto free_partial; | |
561 | ||
764aa3e9 JK |
562 | if (lock) |
563 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 564 | |
b3d208f9 JK |
565 | ipage = get_node_page(sbi, inode->i_ino); |
566 | if (IS_ERR(ipage)) { | |
567 | err = PTR_ERR(ipage); | |
568 | goto out; | |
569 | } | |
570 | ||
571 | if (f2fs_has_inline_data(inode)) { | |
0bfcfcca CY |
572 | if (truncate_inline_inode(ipage, from)) |
573 | set_page_dirty(ipage); | |
b3d208f9 | 574 | f2fs_put_page(ipage, 1); |
0bfcfcca | 575 | truncate_page = true; |
b3d208f9 JK |
576 | goto out; |
577 | } | |
578 | ||
579 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 580 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
581 | if (err) { |
582 | if (err == -ENOENT) | |
583 | goto free_next; | |
b3d208f9 | 584 | goto out; |
1ce86bf6 JK |
585 | } |
586 | ||
81ca7350 | 587 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
588 | |
589 | count -= dn.ofs_in_node; | |
9850cf4a | 590 | f2fs_bug_on(sbi, count < 0); |
39936837 | 591 | |
fbfa2cc5 JK |
592 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
593 | truncate_data_blocks_range(&dn, count); | |
594 | free_from += count; | |
595 | } | |
596 | ||
597 | f2fs_put_dnode(&dn); | |
598 | free_next: | |
599 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
600 | out: |
601 | if (lock) | |
602 | f2fs_unlock_op(sbi); | |
09210c97 | 603 | free_partial: |
b3d208f9 JK |
604 | /* lastly zero out the first data page */ |
605 | if (!err) | |
0bfcfcca | 606 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 607 | |
51dd6249 | 608 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
609 | return err; |
610 | } | |
611 | ||
9a449e9c | 612 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 613 | { |
b0154891 CY |
614 | int err; |
615 | ||
fbfa2cc5 JK |
616 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
617 | S_ISLNK(inode->i_mode))) | |
b0154891 | 618 | return 0; |
fbfa2cc5 | 619 | |
51dd6249 NJ |
620 | trace_f2fs_truncate(inode); |
621 | ||
92dffd01 | 622 | /* we should check inline_data size */ |
b9d777b8 | 623 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
624 | err = f2fs_convert_inline_inode(inode); |
625 | if (err) | |
626 | return err; | |
92dffd01 JK |
627 | } |
628 | ||
9a449e9c | 629 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
630 | if (err) |
631 | return err; | |
632 | ||
633 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
b56ab837 | 634 | f2fs_mark_inode_dirty_sync(inode); |
b0154891 | 635 | return 0; |
fbfa2cc5 JK |
636 | } |
637 | ||
2d4d9fb5 | 638 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
639 | struct dentry *dentry, struct kstat *stat) |
640 | { | |
2b0143b5 | 641 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
642 | generic_fillattr(inode, stat); |
643 | stat->blocks <<= 3; | |
644 | return 0; | |
645 | } | |
646 | ||
647 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
648 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
649 | { | |
fbfa2cc5 JK |
650 | unsigned int ia_valid = attr->ia_valid; |
651 | ||
652 | if (ia_valid & ATTR_UID) | |
653 | inode->i_uid = attr->ia_uid; | |
654 | if (ia_valid & ATTR_GID) | |
655 | inode->i_gid = attr->ia_gid; | |
656 | if (ia_valid & ATTR_ATIME) | |
657 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
658 | inode->i_sb->s_time_gran); | |
659 | if (ia_valid & ATTR_MTIME) | |
660 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
661 | inode->i_sb->s_time_gran); | |
662 | if (ia_valid & ATTR_CTIME) | |
663 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
664 | inode->i_sb->s_time_gran); | |
665 | if (ia_valid & ATTR_MODE) { | |
666 | umode_t mode = attr->ia_mode; | |
667 | ||
668 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
669 | mode &= ~S_ISGID; | |
91942321 | 670 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
671 | } |
672 | } | |
673 | #else | |
674 | #define __setattr_copy setattr_copy | |
675 | #endif | |
676 | ||
677 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
678 | { | |
2b0143b5 | 679 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
680 | int err; |
681 | ||
682 | err = inode_change_ok(inode, attr); | |
683 | if (err) | |
684 | return err; | |
685 | ||
09db6a2e | 686 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d | 687 | if (f2fs_encrypted_inode(inode) && |
0b81d077 | 688 | fscrypt_get_encryption_info(inode)) |
fcc85a4d JK |
689 | return -EACCES; |
690 | ||
3c454145 | 691 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 692 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 693 | err = f2fs_truncate(inode); |
b0154891 CY |
694 | if (err) |
695 | return err; | |
2c4db1a6 | 696 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
09db6a2e CY |
697 | } else { |
698 | /* | |
3c454145 CY |
699 | * do not trim all blocks after i_size if target size is |
700 | * larger than i_size. | |
09db6a2e | 701 | */ |
3c454145 | 702 | truncate_setsize(inode, attr->ia_size); |
0cab80ee CY |
703 | |
704 | /* should convert inline inode here */ | |
b9d777b8 | 705 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
706 | err = f2fs_convert_inline_inode(inode); |
707 | if (err) | |
708 | return err; | |
709 | } | |
345a6b2e | 710 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
09db6a2e | 711 | } |
fbfa2cc5 JK |
712 | } |
713 | ||
714 | __setattr_copy(inode, attr); | |
715 | ||
716 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 717 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
718 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
719 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
720 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
721 | } |
722 | } | |
723 | ||
b56ab837 | 724 | f2fs_mark_inode_dirty_sync(inode); |
fbfa2cc5 JK |
725 | return err; |
726 | } | |
727 | ||
728 | const struct inode_operations f2fs_file_inode_operations = { | |
729 | .getattr = f2fs_getattr, | |
730 | .setattr = f2fs_setattr, | |
731 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 732 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
733 | #ifdef CONFIG_F2FS_FS_XATTR |
734 | .setxattr = generic_setxattr, | |
735 | .getxattr = generic_getxattr, | |
736 | .listxattr = f2fs_listxattr, | |
737 | .removexattr = generic_removexattr, | |
738 | #endif | |
9ab70134 | 739 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
740 | }; |
741 | ||
6394328a | 742 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
743 | loff_t start, loff_t len) |
744 | { | |
4081363f | 745 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
746 | struct page *page; |
747 | ||
748 | if (!len) | |
6394328a | 749 | return 0; |
fbfa2cc5 | 750 | |
2c4db1a6 | 751 | f2fs_balance_fs(sbi, true); |
bd43df02 | 752 | |
e479556b | 753 | f2fs_lock_op(sbi); |
64aa7ed9 | 754 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 755 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 756 | |
6394328a CY |
757 | if (IS_ERR(page)) |
758 | return PTR_ERR(page); | |
759 | ||
fec1d657 | 760 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
761 | zero_user(page, start, len); |
762 | set_page_dirty(page); | |
763 | f2fs_put_page(page, 1); | |
764 | return 0; | |
fbfa2cc5 JK |
765 | } |
766 | ||
767 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
768 | { | |
fbfa2cc5 JK |
769 | int err; |
770 | ||
ea58711e | 771 | while (pg_start < pg_end) { |
fbfa2cc5 | 772 | struct dnode_of_data dn; |
ea58711e | 773 | pgoff_t end_offset, count; |
9eaeba70 | 774 | |
fbfa2cc5 | 775 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 776 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 777 | if (err) { |
ea58711e CY |
778 | if (err == -ENOENT) { |
779 | pg_start++; | |
fbfa2cc5 | 780 | continue; |
ea58711e | 781 | } |
fbfa2cc5 JK |
782 | return err; |
783 | } | |
784 | ||
81ca7350 | 785 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
786 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
787 | ||
788 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
789 | ||
790 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 791 | f2fs_put_dnode(&dn); |
ea58711e CY |
792 | |
793 | pg_start += count; | |
fbfa2cc5 JK |
794 | } |
795 | return 0; | |
796 | } | |
797 | ||
a66c7b2f | 798 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
799 | { |
800 | pgoff_t pg_start, pg_end; | |
801 | loff_t off_start, off_end; | |
b9d777b8 | 802 | int ret; |
fbfa2cc5 | 803 | |
b9d777b8 JK |
804 | ret = f2fs_convert_inline_inode(inode); |
805 | if (ret) | |
806 | return ret; | |
9ffe0fb5 | 807 | |
09cbfeaf KS |
808 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
809 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 810 | |
09cbfeaf KS |
811 | off_start = offset & (PAGE_SIZE - 1); |
812 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
813 | |
814 | if (pg_start == pg_end) { | |
6394328a | 815 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 816 | off_end - off_start); |
6394328a CY |
817 | if (ret) |
818 | return ret; | |
fbfa2cc5 | 819 | } else { |
6394328a CY |
820 | if (off_start) { |
821 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 822 | PAGE_SIZE - off_start); |
6394328a CY |
823 | if (ret) |
824 | return ret; | |
825 | } | |
826 | if (off_end) { | |
827 | ret = fill_zero(inode, pg_end, 0, off_end); | |
828 | if (ret) | |
829 | return ret; | |
830 | } | |
fbfa2cc5 JK |
831 | |
832 | if (pg_start < pg_end) { | |
833 | struct address_space *mapping = inode->i_mapping; | |
834 | loff_t blk_start, blk_end; | |
4081363f | 835 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 836 | |
2c4db1a6 | 837 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 838 | |
09cbfeaf KS |
839 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
840 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
fbfa2cc5 JK |
841 | truncate_inode_pages_range(mapping, blk_start, |
842 | blk_end - 1); | |
39936837 | 843 | |
e479556b | 844 | f2fs_lock_op(sbi); |
fbfa2cc5 | 845 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 846 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
847 | } |
848 | } | |
849 | ||
fbfa2cc5 JK |
850 | return ret; |
851 | } | |
852 | ||
0a2aa8fb JK |
853 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
854 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
855 | { |
856 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
857 | struct dnode_of_data dn; | |
0a2aa8fb | 858 | int ret, done, i; |
ecbaa406 | 859 | |
0a2aa8fb | 860 | next_dnode: |
6e2c64ad | 861 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 862 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
863 | if (ret && ret != -ENOENT) { |
864 | return ret; | |
865 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
866 | if (dn.max_level == 0) |
867 | return -ENOENT; | |
868 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
869 | blkaddr += done; | |
870 | do_replace += done; | |
871 | goto next; | |
872 | } | |
873 | ||
874 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
875 | dn.ofs_in_node, len); | |
876 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
877 | *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
878 | if (!is_checkpointed_data(sbi, *blkaddr)) { | |
879 | ||
880 | if (test_opt(sbi, LFS)) { | |
881 | f2fs_put_dnode(&dn); | |
882 | return -ENOTSUPP; | |
883 | } | |
884 | ||
6e2c64ad | 885 | /* do not invalidate this block address */ |
f28b3434 | 886 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 887 | *do_replace = 1; |
b4ace337 | 888 | } |
6e2c64ad | 889 | } |
0a2aa8fb JK |
890 | f2fs_put_dnode(&dn); |
891 | next: | |
892 | len -= done; | |
893 | off += done; | |
894 | if (len) | |
895 | goto next_dnode; | |
896 | return 0; | |
897 | } | |
b4ace337 | 898 | |
0a2aa8fb JK |
899 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
900 | int *do_replace, pgoff_t off, int len) | |
901 | { | |
902 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
903 | struct dnode_of_data dn; | |
904 | int ret, i; | |
b4ace337 | 905 | |
0a2aa8fb JK |
906 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
907 | if (*do_replace == 0) | |
908 | continue; | |
b4ace337 | 909 | |
0a2aa8fb JK |
910 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
911 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
912 | if (ret) { | |
913 | dec_valid_block_count(sbi, inode, 1); | |
914 | invalidate_blocks(sbi, *blkaddr); | |
915 | } else { | |
916 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 917 | } |
0a2aa8fb JK |
918 | f2fs_put_dnode(&dn); |
919 | } | |
920 | return 0; | |
921 | } | |
922 | ||
923 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
924 | block_t *blkaddr, int *do_replace, | |
925 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
926 | { | |
927 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
928 | pgoff_t i = 0; | |
929 | int ret; | |
36abef4e | 930 | |
0a2aa8fb JK |
931 | while (i < len) { |
932 | if (blkaddr[i] == NULL_ADDR && !full) { | |
933 | i++; | |
934 | continue; | |
6e2c64ad | 935 | } |
b4ace337 | 936 | |
0a2aa8fb JK |
937 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
938 | struct dnode_of_data dn; | |
939 | struct node_info ni; | |
940 | size_t new_size; | |
941 | pgoff_t ilen; | |
b4ace337 | 942 | |
0a2aa8fb JK |
943 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
944 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
945 | if (ret) | |
946 | return ret; | |
b4ace337 | 947 | |
0a2aa8fb JK |
948 | get_node_info(sbi, dn.nid, &ni); |
949 | ilen = min((pgoff_t) | |
950 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
951 | dn.ofs_in_node, len - i); | |
952 | do { | |
953 | dn.data_blkaddr = datablock_addr(dn.node_page, | |
954 | dn.ofs_in_node); | |
955 | truncate_data_blocks_range(&dn, 1); | |
956 | ||
957 | if (do_replace[i]) { | |
958 | f2fs_i_blocks_write(src_inode, | |
959 | 1, false); | |
960 | f2fs_i_blocks_write(dst_inode, | |
961 | 1, true); | |
962 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
963 | blkaddr[i], ni.version, true, false); | |
964 | ||
965 | do_replace[i] = 0; | |
966 | } | |
967 | dn.ofs_in_node++; | |
968 | i++; | |
969 | new_size = (dst + i) << PAGE_SHIFT; | |
970 | if (dst_inode->i_size < new_size) | |
971 | f2fs_i_size_write(dst_inode, new_size); | |
972 | } while ((do_replace[i] || blkaddr[i] == NULL_ADDR) && --ilen); | |
6e2c64ad | 973 | |
0a2aa8fb JK |
974 | f2fs_put_dnode(&dn); |
975 | } else { | |
976 | struct page *psrc, *pdst; | |
977 | ||
978 | psrc = get_lock_data_page(src_inode, src + i, true); | |
979 | if (IS_ERR(psrc)) | |
980 | return PTR_ERR(psrc); | |
981 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
982 | true); | |
983 | if (IS_ERR(pdst)) { | |
984 | f2fs_put_page(psrc, 1); | |
985 | return PTR_ERR(pdst); | |
986 | } | |
987 | f2fs_copy_page(psrc, pdst); | |
988 | set_page_dirty(pdst); | |
989 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 990 | f2fs_put_page(psrc, 1); |
b4ace337 | 991 | |
0a2aa8fb JK |
992 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
993 | if (ret) | |
994 | return ret; | |
995 | i++; | |
996 | } | |
6e2c64ad JK |
997 | } |
998 | return 0; | |
0a2aa8fb | 999 | } |
b4ace337 | 1000 | |
0a2aa8fb JK |
1001 | static int __exchange_data_block(struct inode *src_inode, |
1002 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
1003 | int len, bool full) | |
1004 | { | |
1005 | block_t *src_blkaddr; | |
1006 | int *do_replace; | |
1007 | int ret; | |
1008 | ||
1009 | src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * len, GFP_KERNEL); | |
1010 | if (!src_blkaddr) | |
1011 | return -ENOMEM; | |
1012 | ||
1013 | do_replace = f2fs_kvzalloc(sizeof(int) * len, GFP_KERNEL); | |
1014 | if (!do_replace) { | |
1015 | kvfree(src_blkaddr); | |
1016 | return -ENOMEM; | |
6e2c64ad | 1017 | } |
0a2aa8fb JK |
1018 | |
1019 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1020 | if (ret) | |
1021 | goto roll_back; | |
1022 | ||
1023 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, | |
1024 | do_replace, src, dst, len, full); | |
1025 | if (ret) | |
1026 | goto roll_back; | |
1027 | ||
1028 | kvfree(src_blkaddr); | |
1029 | kvfree(do_replace); | |
1030 | return 0; | |
1031 | ||
1032 | roll_back: | |
1033 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1034 | kvfree(src_blkaddr); | |
1035 | kvfree(do_replace); | |
6e2c64ad JK |
1036 | return ret; |
1037 | } | |
b4ace337 | 1038 | |
6e2c64ad JK |
1039 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1040 | { | |
1041 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1042 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1043 | int ret; |
6e2c64ad | 1044 | |
0a2aa8fb JK |
1045 | f2fs_balance_fs(sbi, true); |
1046 | f2fs_lock_op(sbi); | |
5f281fab JK |
1047 | |
1048 | f2fs_drop_extent_tree(inode); | |
1049 | ||
0a2aa8fb JK |
1050 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1051 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1052 | return ret; |
1053 | } | |
1054 | ||
1055 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1056 | { | |
1057 | pgoff_t pg_start, pg_end; | |
1058 | loff_t new_size; | |
1059 | int ret; | |
1060 | ||
b4ace337 CY |
1061 | if (offset + len >= i_size_read(inode)) |
1062 | return -EINVAL; | |
1063 | ||
1064 | /* collapse range should be aligned to block size of f2fs. */ | |
1065 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1066 | return -EINVAL; | |
1067 | ||
b9d777b8 JK |
1068 | ret = f2fs_convert_inline_inode(inode); |
1069 | if (ret) | |
1070 | return ret; | |
97a7b2c2 | 1071 | |
09cbfeaf KS |
1072 | pg_start = offset >> PAGE_SHIFT; |
1073 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 CY |
1074 | |
1075 | /* write out all dirty pages from offset */ | |
1076 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1077 | if (ret) | |
1078 | return ret; | |
1079 | ||
1080 | truncate_pagecache(inode, offset); | |
1081 | ||
1082 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1083 | if (ret) | |
1084 | return ret; | |
1085 | ||
6e2c64ad JK |
1086 | /* write out all moved pages, if possible */ |
1087 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1088 | truncate_pagecache(inode, offset); | |
1089 | ||
b4ace337 | 1090 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1091 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1092 | |
1093 | ret = truncate_blocks(inode, new_size, true); | |
1094 | if (!ret) | |
fc9581c8 | 1095 | f2fs_i_size_write(inode, new_size); |
b4ace337 CY |
1096 | |
1097 | return ret; | |
1098 | } | |
1099 | ||
6e961949 CY |
1100 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1101 | pgoff_t end) | |
1102 | { | |
1103 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1104 | pgoff_t index = start; | |
1105 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1106 | blkcnt_t count = 0; | |
1107 | int ret; | |
1108 | ||
1109 | for (; index < end; index++, dn->ofs_in_node++) { | |
1110 | if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR) | |
1111 | count++; | |
1112 | } | |
1113 | ||
1114 | dn->ofs_in_node = ofs_in_node; | |
1115 | ret = reserve_new_blocks(dn, count); | |
1116 | if (ret) | |
1117 | return ret; | |
1118 | ||
1119 | dn->ofs_in_node = ofs_in_node; | |
1120 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
1121 | dn->data_blkaddr = | |
1122 | datablock_addr(dn->node_page, dn->ofs_in_node); | |
1123 | /* | |
1124 | * reserve_new_blocks will not guarantee entire block | |
1125 | * allocation. | |
1126 | */ | |
1127 | if (dn->data_blkaddr == NULL_ADDR) { | |
1128 | ret = -ENOSPC; | |
1129 | break; | |
1130 | } | |
1131 | if (dn->data_blkaddr != NEW_ADDR) { | |
1132 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1133 | dn->data_blkaddr = NEW_ADDR; | |
1134 | set_data_blkaddr(dn); | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1139 | ||
1140 | return ret; | |
1141 | } | |
1142 | ||
75cd4e09 CY |
1143 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1144 | int mode) | |
1145 | { | |
1146 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1147 | struct address_space *mapping = inode->i_mapping; | |
1148 | pgoff_t index, pg_start, pg_end; | |
1149 | loff_t new_size = i_size_read(inode); | |
1150 | loff_t off_start, off_end; | |
1151 | int ret = 0; | |
1152 | ||
75cd4e09 CY |
1153 | ret = inode_newsize_ok(inode, (len + offset)); |
1154 | if (ret) | |
1155 | return ret; | |
1156 | ||
b9d777b8 JK |
1157 | ret = f2fs_convert_inline_inode(inode); |
1158 | if (ret) | |
1159 | return ret; | |
75cd4e09 CY |
1160 | |
1161 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1162 | if (ret) | |
1163 | return ret; | |
1164 | ||
1165 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1166 | ||
09cbfeaf KS |
1167 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1168 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1169 | |
09cbfeaf KS |
1170 | off_start = offset & (PAGE_SIZE - 1); |
1171 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1172 | |
1173 | if (pg_start == pg_end) { | |
6394328a CY |
1174 | ret = fill_zero(inode, pg_start, off_start, |
1175 | off_end - off_start); | |
1176 | if (ret) | |
1177 | return ret; | |
1178 | ||
75cd4e09 CY |
1179 | if (offset + len > new_size) |
1180 | new_size = offset + len; | |
1181 | new_size = max_t(loff_t, new_size, offset + len); | |
1182 | } else { | |
1183 | if (off_start) { | |
6394328a | 1184 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1185 | PAGE_SIZE - off_start); |
6394328a CY |
1186 | if (ret) |
1187 | return ret; | |
1188 | ||
75cd4e09 | 1189 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1190 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1191 | } |
1192 | ||
6e961949 | 1193 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1194 | struct dnode_of_data dn; |
6e961949 CY |
1195 | unsigned int end_offset; |
1196 | pgoff_t end; | |
75cd4e09 CY |
1197 | |
1198 | f2fs_lock_op(sbi); | |
1199 | ||
6e961949 CY |
1200 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1201 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1202 | if (ret) { |
1203 | f2fs_unlock_op(sbi); | |
1204 | goto out; | |
1205 | } | |
1206 | ||
6e961949 CY |
1207 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1208 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1209 | ||
1210 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1211 | f2fs_put_dnode(&dn); |
1212 | f2fs_unlock_op(sbi); | |
6e961949 CY |
1213 | if (ret) |
1214 | goto out; | |
75cd4e09 | 1215 | |
6e961949 | 1216 | index = end; |
75cd4e09 | 1217 | new_size = max_t(loff_t, new_size, |
6e961949 | 1218 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1219 | } |
1220 | ||
1221 | if (off_end) { | |
6394328a CY |
1222 | ret = fill_zero(inode, pg_end, 0, off_end); |
1223 | if (ret) | |
1224 | goto out; | |
1225 | ||
75cd4e09 CY |
1226 | new_size = max_t(loff_t, new_size, offset + len); |
1227 | } | |
1228 | } | |
1229 | ||
1230 | out: | |
ee6d182f | 1231 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1232 | f2fs_i_size_write(inode, new_size); |
75cd4e09 CY |
1233 | |
1234 | return ret; | |
1235 | } | |
1236 | ||
f62185d0 CY |
1237 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1238 | { | |
1239 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1240 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1241 | loff_t new_size; |
6e2c64ad | 1242 | int ret = 0; |
f62185d0 | 1243 | |
f62185d0 CY |
1244 | new_size = i_size_read(inode) + len; |
1245 | if (new_size > inode->i_sb->s_maxbytes) | |
1246 | return -EFBIG; | |
1247 | ||
1248 | if (offset >= i_size_read(inode)) | |
1249 | return -EINVAL; | |
1250 | ||
1251 | /* insert range should be aligned to block size of f2fs. */ | |
1252 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1253 | return -EINVAL; | |
1254 | ||
b9d777b8 JK |
1255 | ret = f2fs_convert_inline_inode(inode); |
1256 | if (ret) | |
1257 | return ret; | |
97a7b2c2 | 1258 | |
2c4db1a6 | 1259 | f2fs_balance_fs(sbi, true); |
2a340760 | 1260 | |
f62185d0 CY |
1261 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1262 | if (ret) | |
1263 | return ret; | |
1264 | ||
1265 | /* write out all dirty pages from offset */ | |
1266 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1267 | if (ret) | |
1268 | return ret; | |
1269 | ||
1270 | truncate_pagecache(inode, offset); | |
1271 | ||
09cbfeaf KS |
1272 | pg_start = offset >> PAGE_SHIFT; |
1273 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1274 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1275 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1276 | ||
1277 | while (!ret && idx > pg_start) { | |
1278 | nr = idx - pg_start; | |
1279 | if (nr > delta) | |
1280 | nr = delta; | |
1281 | idx -= nr; | |
f62185d0 | 1282 | |
f62185d0 | 1283 | f2fs_lock_op(sbi); |
5f281fab JK |
1284 | f2fs_drop_extent_tree(inode); |
1285 | ||
0a2aa8fb JK |
1286 | ret = __exchange_data_block(inode, inode, idx, |
1287 | idx + delta, nr, false); | |
f62185d0 CY |
1288 | f2fs_unlock_op(sbi); |
1289 | } | |
1290 | ||
6e2c64ad JK |
1291 | /* write out all moved pages, if possible */ |
1292 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1293 | truncate_pagecache(inode, offset); | |
1294 | ||
1295 | if (!ret) | |
fc9581c8 | 1296 | f2fs_i_size_write(inode, new_size); |
f62185d0 CY |
1297 | return ret; |
1298 | } | |
1299 | ||
fbfa2cc5 JK |
1300 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1301 | loff_t len, int mode) | |
1302 | { | |
4081363f | 1303 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1304 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1305 | pgoff_t pg_end; | |
fbfa2cc5 | 1306 | loff_t new_size = i_size_read(inode); |
e12dd7bd JK |
1307 | loff_t off_end; |
1308 | int ret; | |
fbfa2cc5 JK |
1309 | |
1310 | ret = inode_newsize_ok(inode, (len + offset)); | |
1311 | if (ret) | |
1312 | return ret; | |
1313 | ||
b9d777b8 JK |
1314 | ret = f2fs_convert_inline_inode(inode); |
1315 | if (ret) | |
1316 | return ret; | |
9e09fc85 | 1317 | |
2c4db1a6 | 1318 | f2fs_balance_fs(sbi, true); |
2a340760 | 1319 | |
e12dd7bd | 1320 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1321 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1322 | |
e12dd7bd JK |
1323 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1324 | map.m_len = pg_end - map.m_lblk; | |
1325 | if (off_end) | |
1326 | map.m_len++; | |
ead43275 | 1327 | |
e12dd7bd JK |
1328 | ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1329 | if (ret) { | |
1330 | pgoff_t last_off; | |
fbfa2cc5 | 1331 | |
e12dd7bd JK |
1332 | if (!map.m_len) |
1333 | return ret; | |
98397ff3 | 1334 | |
e12dd7bd JK |
1335 | last_off = map.m_lblk + map.m_len - 1; |
1336 | ||
1337 | /* update new size to the failed position */ | |
1338 | new_size = (last_off == pg_end) ? offset + len: | |
1339 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1340 | } else { | |
1341 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1342 | } |
1343 | ||
ee6d182f | 1344 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1345 | f2fs_i_size_write(inode, new_size); |
fbfa2cc5 JK |
1346 | |
1347 | return ret; | |
1348 | } | |
1349 | ||
1350 | static long f2fs_fallocate(struct file *file, int mode, | |
1351 | loff_t offset, loff_t len) | |
1352 | { | |
6131ffaa | 1353 | struct inode *inode = file_inode(file); |
587c0a42 | 1354 | long ret = 0; |
fbfa2cc5 | 1355 | |
c998012b CY |
1356 | /* f2fs only support ->fallocate for regular file */ |
1357 | if (!S_ISREG(inode->i_mode)) | |
1358 | return -EINVAL; | |
1359 | ||
f62185d0 CY |
1360 | if (f2fs_encrypted_inode(inode) && |
1361 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1362 | return -EOPNOTSUPP; |
1363 | ||
b4ace337 | 1364 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1365 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1366 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1367 | return -EOPNOTSUPP; |
1368 | ||
5955102c | 1369 | inode_lock(inode); |
3375f696 | 1370 | |
587c0a42 TY |
1371 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1372 | if (offset >= inode->i_size) | |
1373 | goto out; | |
1374 | ||
a66c7b2f | 1375 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1376 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1377 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1378 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1379 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1380 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1381 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1382 | } else { |
fbfa2cc5 | 1383 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1384 | } |
fbfa2cc5 | 1385 | |
3af60a49 NJ |
1386 | if (!ret) { |
1387 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
b56ab837 | 1388 | f2fs_mark_inode_dirty_sync(inode); |
d0239e1b | 1389 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1390 | } |
3375f696 | 1391 | |
587c0a42 | 1392 | out: |
5955102c | 1393 | inode_unlock(inode); |
3375f696 | 1394 | |
c01e2853 | 1395 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1396 | return ret; |
1397 | } | |
1398 | ||
1e84371f JK |
1399 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1400 | { | |
de5307e4 JK |
1401 | /* |
1402 | * f2fs_relase_file is called at every close calls. So we should | |
1403 | * not drop any inmemory pages by close called by other process. | |
1404 | */ | |
1405 | if (!(filp->f_mode & FMODE_WRITE) || | |
1406 | atomic_read(&inode->i_writecount) != 1) | |
1407 | return 0; | |
1408 | ||
1e84371f JK |
1409 | /* some remained atomic pages should discarded */ |
1410 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1411 | drop_inmem_pages(inode); |
1e84371f | 1412 | if (f2fs_is_volatile_file(inode)) { |
91942321 JK |
1413 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1414 | set_inode_flag(inode, FI_DROP_CACHE); | |
1e84371f | 1415 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1416 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1417 | } |
1418 | return 0; | |
1419 | } | |
1420 | ||
fbfa2cc5 JK |
1421 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1422 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1423 | ||
1424 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1425 | { | |
1426 | if (S_ISDIR(mode)) | |
1427 | return flags; | |
1428 | else if (S_ISREG(mode)) | |
1429 | return flags & F2FS_REG_FLMASK; | |
1430 | else | |
1431 | return flags & F2FS_OTHER_FLMASK; | |
1432 | } | |
1433 | ||
52656e6c | 1434 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1435 | { |
6131ffaa | 1436 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1437 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1438 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1439 | return put_user(flags, (int __user *)arg); | |
1440 | } | |
fbfa2cc5 | 1441 | |
52656e6c JK |
1442 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1443 | { | |
1444 | struct inode *inode = file_inode(filp); | |
1445 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1446 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
1447 | unsigned int oldflags; | |
1448 | int ret; | |
fbfa2cc5 | 1449 | |
7fb17fe4 CY |
1450 | if (!inode_owner_or_capable(inode)) |
1451 | return -EACCES; | |
1452 | ||
1453 | if (get_user(flags, (int __user *)arg)) | |
1454 | return -EFAULT; | |
1455 | ||
52656e6c JK |
1456 | ret = mnt_want_write_file(filp); |
1457 | if (ret) | |
1458 | return ret; | |
fbfa2cc5 | 1459 | |
52656e6c | 1460 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1461 | |
5955102c | 1462 | inode_lock(inode); |
fbfa2cc5 | 1463 | |
52656e6c | 1464 | oldflags = fi->i_flags; |
fbfa2cc5 | 1465 | |
52656e6c JK |
1466 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1467 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1468 | inode_unlock(inode); |
52656e6c JK |
1469 | ret = -EPERM; |
1470 | goto out; | |
fbfa2cc5 | 1471 | } |
52656e6c | 1472 | } |
fbfa2cc5 | 1473 | |
52656e6c JK |
1474 | flags = flags & FS_FL_USER_MODIFIABLE; |
1475 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1476 | fi->i_flags = flags; | |
5955102c | 1477 | inode_unlock(inode); |
fbfa2cc5 | 1478 | |
52656e6c | 1479 | inode->i_ctime = CURRENT_TIME; |
205b9822 | 1480 | f2fs_set_inode_flags(inode); |
fbfa2cc5 | 1481 | out: |
52656e6c JK |
1482 | mnt_drop_write_file(filp); |
1483 | return ret; | |
1484 | } | |
4b2fecc8 | 1485 | |
d49f3e89 CY |
1486 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1487 | { | |
1488 | struct inode *inode = file_inode(filp); | |
1489 | ||
1490 | return put_user(inode->i_generation, (int __user *)arg); | |
1491 | } | |
1492 | ||
88b88a66 JK |
1493 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1494 | { | |
1495 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1496 | int ret; |
88b88a66 JK |
1497 | |
1498 | if (!inode_owner_or_capable(inode)) | |
1499 | return -EACCES; | |
1500 | ||
7fb17fe4 CY |
1501 | ret = mnt_want_write_file(filp); |
1502 | if (ret) | |
1503 | return ret; | |
1504 | ||
0fac558b CY |
1505 | inode_lock(inode); |
1506 | ||
1e84371f | 1507 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1508 | goto out; |
88b88a66 | 1509 | |
f4c9c743 CY |
1510 | ret = f2fs_convert_inline_inode(inode); |
1511 | if (ret) | |
7fb17fe4 | 1512 | goto out; |
88b88a66 | 1513 | |
91942321 | 1514 | set_inode_flag(inode, FI_ATOMIC_FILE); |
d0239e1b JK |
1515 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1516 | ||
c27753d6 | 1517 | if (!get_dirty_pages(inode)) |
7fb17fe4 | 1518 | goto out; |
c27753d6 JK |
1519 | |
1520 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
1beba1b3 | 1521 | "Unexpected flush for atomic writes: ino=%lu, npages=%lld", |
c27753d6 JK |
1522 | inode->i_ino, get_dirty_pages(inode)); |
1523 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
1524 | if (ret) | |
91942321 | 1525 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
7fb17fe4 | 1526 | out: |
0fac558b | 1527 | inode_unlock(inode); |
7fb17fe4 | 1528 | mnt_drop_write_file(filp); |
c27753d6 | 1529 | return ret; |
88b88a66 JK |
1530 | } |
1531 | ||
1532 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1533 | { | |
1534 | struct inode *inode = file_inode(filp); | |
1535 | int ret; | |
1536 | ||
1537 | if (!inode_owner_or_capable(inode)) | |
1538 | return -EACCES; | |
1539 | ||
1540 | ret = mnt_want_write_file(filp); | |
1541 | if (ret) | |
1542 | return ret; | |
1543 | ||
0fac558b CY |
1544 | inode_lock(inode); |
1545 | ||
7fb17fe4 CY |
1546 | if (f2fs_is_volatile_file(inode)) |
1547 | goto err_out; | |
1548 | ||
6282adbf | 1549 | if (f2fs_is_atomic_file(inode)) { |
91942321 | 1550 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
29b96b54 | 1551 | ret = commit_inmem_pages(inode); |
447135a8 | 1552 | if (ret) { |
91942321 | 1553 | set_inode_flag(inode, FI_ATOMIC_FILE); |
edb27dee | 1554 | goto err_out; |
447135a8 | 1555 | } |
6282adbf | 1556 | } |
88b88a66 | 1557 | |
608514de | 1558 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
edb27dee | 1559 | err_out: |
0fac558b | 1560 | inode_unlock(inode); |
88b88a66 JK |
1561 | mnt_drop_write_file(filp); |
1562 | return ret; | |
1563 | } | |
1564 | ||
02a1335f JK |
1565 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1566 | { | |
1567 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1568 | int ret; |
02a1335f JK |
1569 | |
1570 | if (!inode_owner_or_capable(inode)) | |
1571 | return -EACCES; | |
1572 | ||
7fb17fe4 CY |
1573 | ret = mnt_want_write_file(filp); |
1574 | if (ret) | |
1575 | return ret; | |
1576 | ||
0fac558b CY |
1577 | inode_lock(inode); |
1578 | ||
1e84371f | 1579 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1580 | goto out; |
1e84371f | 1581 | |
f4c9c743 CY |
1582 | ret = f2fs_convert_inline_inode(inode); |
1583 | if (ret) | |
7fb17fe4 | 1584 | goto out; |
b3d208f9 | 1585 | |
91942321 | 1586 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1587 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1588 | out: |
0fac558b | 1589 | inode_unlock(inode); |
7fb17fe4 CY |
1590 | mnt_drop_write_file(filp); |
1591 | return ret; | |
02a1335f JK |
1592 | } |
1593 | ||
1e84371f JK |
1594 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1595 | { | |
1596 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1597 | int ret; |
1e84371f JK |
1598 | |
1599 | if (!inode_owner_or_capable(inode)) | |
1600 | return -EACCES; | |
1601 | ||
7fb17fe4 CY |
1602 | ret = mnt_want_write_file(filp); |
1603 | if (ret) | |
1604 | return ret; | |
1605 | ||
0fac558b CY |
1606 | inode_lock(inode); |
1607 | ||
1e84371f | 1608 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1609 | goto out; |
1e84371f | 1610 | |
7fb17fe4 CY |
1611 | if (!f2fs_is_first_block_written(inode)) { |
1612 | ret = truncate_partial_data_page(inode, 0, true); | |
1613 | goto out; | |
1614 | } | |
3c6c2beb | 1615 | |
7fb17fe4 CY |
1616 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1617 | out: | |
0fac558b | 1618 | inode_unlock(inode); |
7fb17fe4 CY |
1619 | mnt_drop_write_file(filp); |
1620 | return ret; | |
1e84371f JK |
1621 | } |
1622 | ||
1623 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1624 | { | |
1625 | struct inode *inode = file_inode(filp); | |
1626 | int ret; | |
1627 | ||
1628 | if (!inode_owner_or_capable(inode)) | |
1629 | return -EACCES; | |
1630 | ||
1631 | ret = mnt_want_write_file(filp); | |
1632 | if (ret) | |
1633 | return ret; | |
1634 | ||
0fac558b CY |
1635 | inode_lock(inode); |
1636 | ||
26dc3d44 | 1637 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1638 | drop_inmem_pages(inode); |
732d5648 | 1639 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1640 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
608514de | 1641 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1642 | } |
de6a8ec9 | 1643 | |
0fac558b CY |
1644 | inode_unlock(inode); |
1645 | ||
1e84371f | 1646 | mnt_drop_write_file(filp); |
d0239e1b | 1647 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1648 | return ret; |
1649 | } | |
1650 | ||
1abff93d JK |
1651 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1652 | { | |
1653 | struct inode *inode = file_inode(filp); | |
1654 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1655 | struct super_block *sb = sbi->sb; | |
1656 | __u32 in; | |
7fb17fe4 | 1657 | int ret; |
1abff93d JK |
1658 | |
1659 | if (!capable(CAP_SYS_ADMIN)) | |
1660 | return -EPERM; | |
1661 | ||
1662 | if (get_user(in, (__u32 __user *)arg)) | |
1663 | return -EFAULT; | |
1664 | ||
7fb17fe4 CY |
1665 | ret = mnt_want_write_file(filp); |
1666 | if (ret) | |
1667 | return ret; | |
1668 | ||
1abff93d JK |
1669 | switch (in) { |
1670 | case F2FS_GOING_DOWN_FULLSYNC: | |
1671 | sb = freeze_bdev(sb->s_bdev); | |
1672 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1673 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1674 | thaw_bdev(sb->s_bdev, sb); |
1675 | } | |
1676 | break; | |
1677 | case F2FS_GOING_DOWN_METASYNC: | |
1678 | /* do checkpoint only */ | |
1679 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1680 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1681 | break; |
1682 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1683 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1684 | break; |
c912a829 JK |
1685 | case F2FS_GOING_DOWN_METAFLUSH: |
1686 | sync_meta_pages(sbi, META, LONG_MAX); | |
38f91ca8 | 1687 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1688 | break; |
1abff93d | 1689 | default: |
7fb17fe4 CY |
1690 | ret = -EINVAL; |
1691 | goto out; | |
1abff93d | 1692 | } |
d0239e1b | 1693 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1694 | out: |
1695 | mnt_drop_write_file(filp); | |
1696 | return ret; | |
1abff93d JK |
1697 | } |
1698 | ||
52656e6c JK |
1699 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1700 | { | |
1701 | struct inode *inode = file_inode(filp); | |
1702 | struct super_block *sb = inode->i_sb; | |
1703 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1704 | struct fstrim_range range; | |
1705 | int ret; | |
4b2fecc8 | 1706 | |
52656e6c JK |
1707 | if (!capable(CAP_SYS_ADMIN)) |
1708 | return -EPERM; | |
4b2fecc8 | 1709 | |
52656e6c JK |
1710 | if (!blk_queue_discard(q)) |
1711 | return -EOPNOTSUPP; | |
4b2fecc8 | 1712 | |
52656e6c JK |
1713 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1714 | sizeof(range))) | |
1715 | return -EFAULT; | |
4b2fecc8 | 1716 | |
7fb17fe4 CY |
1717 | ret = mnt_want_write_file(filp); |
1718 | if (ret) | |
1719 | return ret; | |
1720 | ||
52656e6c JK |
1721 | range.minlen = max((unsigned int)range.minlen, |
1722 | q->limits.discard_granularity); | |
1723 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1724 | mnt_drop_write_file(filp); |
52656e6c JK |
1725 | if (ret < 0) |
1726 | return ret; | |
4b2fecc8 | 1727 | |
52656e6c JK |
1728 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1729 | sizeof(range))) | |
1730 | return -EFAULT; | |
d0239e1b | 1731 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1732 | return 0; |
1733 | } | |
1734 | ||
f424f664 JK |
1735 | static bool uuid_is_nonzero(__u8 u[16]) |
1736 | { | |
1737 | int i; | |
1738 | ||
1739 | for (i = 0; i < 16; i++) | |
1740 | if (u[i]) | |
1741 | return true; | |
1742 | return false; | |
1743 | } | |
1744 | ||
1745 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1746 | { | |
0b81d077 | 1747 | struct fscrypt_policy policy; |
f424f664 | 1748 | struct inode *inode = file_inode(filp); |
7fb17fe4 | 1749 | int ret; |
f424f664 | 1750 | |
0b81d077 JK |
1751 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
1752 | sizeof(policy))) | |
f424f664 JK |
1753 | return -EFAULT; |
1754 | ||
7fb17fe4 CY |
1755 | ret = mnt_want_write_file(filp); |
1756 | if (ret) | |
1757 | return ret; | |
1758 | ||
d0239e1b | 1759 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 CY |
1760 | ret = fscrypt_process_policy(inode, &policy); |
1761 | ||
1762 | mnt_drop_write_file(filp); | |
1763 | return ret; | |
f424f664 JK |
1764 | } |
1765 | ||
1766 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1767 | { | |
0b81d077 | 1768 | struct fscrypt_policy policy; |
f424f664 JK |
1769 | struct inode *inode = file_inode(filp); |
1770 | int err; | |
1771 | ||
0b81d077 | 1772 | err = fscrypt_get_policy(inode, &policy); |
f424f664 JK |
1773 | if (err) |
1774 | return err; | |
1775 | ||
0b81d077 | 1776 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
f424f664 JK |
1777 | return -EFAULT; |
1778 | return 0; | |
f424f664 JK |
1779 | } |
1780 | ||
1781 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1782 | { | |
1783 | struct inode *inode = file_inode(filp); | |
1784 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1785 | int err; | |
1786 | ||
1787 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1788 | return -EOPNOTSUPP; | |
1789 | ||
1790 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1791 | goto got_it; | |
1792 | ||
1793 | err = mnt_want_write_file(filp); | |
1794 | if (err) | |
1795 | return err; | |
1796 | ||
1797 | /* update superblock with uuid */ | |
1798 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1799 | ||
c5bda1c8 | 1800 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1801 | if (err) { |
1802 | /* undo new data */ | |
1803 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1804 | mnt_drop_write_file(filp); |
f424f664 JK |
1805 | return err; |
1806 | } | |
e8240f65 | 1807 | mnt_drop_write_file(filp); |
f424f664 JK |
1808 | got_it: |
1809 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1810 | 16)) | |
1811 | return -EFAULT; | |
1812 | return 0; | |
1813 | } | |
1814 | ||
c1c1b583 CY |
1815 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1816 | { | |
1817 | struct inode *inode = file_inode(filp); | |
1818 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1819 | __u32 sync; |
7fb17fe4 | 1820 | int ret; |
c1c1b583 CY |
1821 | |
1822 | if (!capable(CAP_SYS_ADMIN)) | |
1823 | return -EPERM; | |
1824 | ||
d530d4d8 | 1825 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1826 | return -EFAULT; |
1827 | ||
d530d4d8 CY |
1828 | if (f2fs_readonly(sbi->sb)) |
1829 | return -EROFS; | |
c1c1b583 | 1830 | |
7fb17fe4 CY |
1831 | ret = mnt_want_write_file(filp); |
1832 | if (ret) | |
1833 | return ret; | |
1834 | ||
d530d4d8 | 1835 | if (!sync) { |
7fb17fe4 CY |
1836 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1837 | ret = -EBUSY; | |
1838 | goto out; | |
1839 | } | |
d530d4d8 CY |
1840 | } else { |
1841 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1842 | } |
1843 | ||
7fb17fe4 CY |
1844 | ret = f2fs_gc(sbi, sync); |
1845 | out: | |
1846 | mnt_drop_write_file(filp); | |
1847 | return ret; | |
c1c1b583 CY |
1848 | } |
1849 | ||
456b88e4 CY |
1850 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1851 | { | |
1852 | struct inode *inode = file_inode(filp); | |
1853 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 1854 | int ret; |
456b88e4 CY |
1855 | |
1856 | if (!capable(CAP_SYS_ADMIN)) | |
1857 | return -EPERM; | |
1858 | ||
1859 | if (f2fs_readonly(sbi->sb)) | |
1860 | return -EROFS; | |
1861 | ||
7fb17fe4 CY |
1862 | ret = mnt_want_write_file(filp); |
1863 | if (ret) | |
1864 | return ret; | |
1865 | ||
1866 | ret = f2fs_sync_fs(sbi->sb, 1); | |
1867 | ||
1868 | mnt_drop_write_file(filp); | |
1869 | return ret; | |
456b88e4 CY |
1870 | } |
1871 | ||
d323d005 CY |
1872 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1873 | struct file *filp, | |
1874 | struct f2fs_defragment *range) | |
1875 | { | |
1876 | struct inode *inode = file_inode(filp); | |
da85985c | 1877 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
d323d005 CY |
1878 | struct extent_info ei; |
1879 | pgoff_t pg_start, pg_end; | |
3519e3f9 | 1880 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1881 | unsigned int total = 0, sec_num; |
3519e3f9 | 1882 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
d323d005 CY |
1883 | block_t blk_end = 0; |
1884 | bool fragmented = false; | |
1885 | int err; | |
1886 | ||
1887 | /* if in-place-update policy is enabled, don't waste time here */ | |
1888 | if (need_inplace_update(inode)) | |
1889 | return -EINVAL; | |
1890 | ||
09cbfeaf KS |
1891 | pg_start = range->start >> PAGE_SHIFT; |
1892 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 1893 | |
2c4db1a6 | 1894 | f2fs_balance_fs(sbi, true); |
d323d005 | 1895 | |
5955102c | 1896 | inode_lock(inode); |
d323d005 CY |
1897 | |
1898 | /* writeback all dirty pages in the range */ | |
1899 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1900 | range->start + range->len - 1); |
d323d005 CY |
1901 | if (err) |
1902 | goto out; | |
1903 | ||
1904 | /* | |
1905 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1906 | * block addresses are continuous. | |
1907 | */ | |
1908 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1909 | if (ei.fofs + ei.len >= pg_end) | |
1910 | goto out; | |
1911 | } | |
1912 | ||
1913 | map.m_lblk = pg_start; | |
d323d005 CY |
1914 | |
1915 | /* | |
1916 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1917 | * physical block addresses are continuous even if there are hole(s) | |
1918 | * in logical blocks. | |
1919 | */ | |
1920 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1921 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1922 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1923 | if (err) | |
1924 | goto out; | |
1925 | ||
1926 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1927 | map.m_lblk++; | |
d323d005 CY |
1928 | continue; |
1929 | } | |
1930 | ||
1931 | if (blk_end && blk_end != map.m_pblk) { | |
1932 | fragmented = true; | |
1933 | break; | |
1934 | } | |
1935 | blk_end = map.m_pblk + map.m_len; | |
1936 | ||
1937 | map.m_lblk += map.m_len; | |
d323d005 CY |
1938 | } |
1939 | ||
1940 | if (!fragmented) | |
1941 | goto out; | |
1942 | ||
1943 | map.m_lblk = pg_start; | |
1944 | map.m_len = pg_end - pg_start; | |
1945 | ||
1946 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; | |
1947 | ||
1948 | /* | |
1949 | * make sure there are enough free section for LFS allocation, this can | |
1950 | * avoid defragment running in SSR mode when free section are allocated | |
1951 | * intensively | |
1952 | */ | |
1953 | if (has_not_enough_free_secs(sbi, sec_num)) { | |
1954 | err = -EAGAIN; | |
1955 | goto out; | |
1956 | } | |
1957 | ||
1958 | while (map.m_lblk < pg_end) { | |
1959 | pgoff_t idx; | |
1960 | int cnt = 0; | |
1961 | ||
1962 | do_map: | |
a1c1e9b7 | 1963 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1964 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1965 | if (err) | |
1966 | goto clear_out; | |
1967 | ||
1968 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1969 | map.m_lblk++; | |
1970 | continue; | |
1971 | } | |
1972 | ||
91942321 | 1973 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1974 | |
1975 | idx = map.m_lblk; | |
1976 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
1977 | struct page *page; | |
1978 | ||
1979 | page = get_lock_data_page(inode, idx, true); | |
1980 | if (IS_ERR(page)) { | |
1981 | err = PTR_ERR(page); | |
1982 | goto clear_out; | |
1983 | } | |
1984 | ||
1985 | set_page_dirty(page); | |
1986 | f2fs_put_page(page, 1); | |
1987 | ||
1988 | idx++; | |
1989 | cnt++; | |
1990 | total++; | |
1991 | } | |
1992 | ||
1993 | map.m_lblk = idx; | |
d323d005 CY |
1994 | |
1995 | if (idx < pg_end && cnt < blk_per_seg) | |
1996 | goto do_map; | |
1997 | ||
91942321 | 1998 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1999 | |
2000 | err = filemap_fdatawrite(inode->i_mapping); | |
2001 | if (err) | |
2002 | goto out; | |
2003 | } | |
2004 | clear_out: | |
91942321 | 2005 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2006 | out: |
5955102c | 2007 | inode_unlock(inode); |
d323d005 | 2008 | if (!err) |
09cbfeaf | 2009 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2010 | return err; |
2011 | } | |
2012 | ||
2013 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2014 | { | |
2015 | struct inode *inode = file_inode(filp); | |
2016 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2017 | struct f2fs_defragment range; | |
2018 | int err; | |
2019 | ||
2020 | if (!capable(CAP_SYS_ADMIN)) | |
2021 | return -EPERM; | |
2022 | ||
2023 | if (!S_ISREG(inode->i_mode)) | |
2024 | return -EINVAL; | |
2025 | ||
2026 | err = mnt_want_write_file(filp); | |
2027 | if (err) | |
2028 | return err; | |
2029 | ||
2030 | if (f2fs_readonly(sbi->sb)) { | |
2031 | err = -EROFS; | |
2032 | goto out; | |
2033 | } | |
2034 | ||
2035 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
2036 | sizeof(range))) { | |
2037 | err = -EFAULT; | |
2038 | goto out; | |
2039 | } | |
2040 | ||
2041 | /* verify alignment of offset & size */ | |
2042 | if (range.start & (F2FS_BLKSIZE - 1) || | |
2043 | range.len & (F2FS_BLKSIZE - 1)) { | |
2044 | err = -EINVAL; | |
2045 | goto out; | |
2046 | } | |
2047 | ||
2048 | err = f2fs_defragment_range(sbi, filp, &range); | |
d0239e1b | 2049 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 CY |
2050 | if (err < 0) |
2051 | goto out; | |
2052 | ||
2053 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2054 | sizeof(range))) | |
2055 | err = -EFAULT; | |
2056 | out: | |
2057 | mnt_drop_write_file(filp); | |
2058 | return err; | |
2059 | } | |
2060 | ||
52656e6c JK |
2061 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2062 | { | |
2063 | switch (cmd) { | |
2064 | case F2FS_IOC_GETFLAGS: | |
2065 | return f2fs_ioc_getflags(filp, arg); | |
2066 | case F2FS_IOC_SETFLAGS: | |
2067 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2068 | case F2FS_IOC_GETVERSION: |
2069 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2070 | case F2FS_IOC_START_ATOMIC_WRITE: |
2071 | return f2fs_ioc_start_atomic_write(filp); | |
2072 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2073 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2074 | case F2FS_IOC_START_VOLATILE_WRITE: |
2075 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2076 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2077 | return f2fs_ioc_release_volatile_write(filp); | |
2078 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2079 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2080 | case F2FS_IOC_SHUTDOWN: |
2081 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2082 | case FITRIM: |
2083 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2084 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2085 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2086 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2087 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2088 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2089 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2090 | case F2FS_IOC_GARBAGE_COLLECT: |
2091 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
2092 | case F2FS_IOC_WRITE_CHECKPOINT: |
2093 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2094 | case F2FS_IOC_DEFRAGMENT: |
2095 | return f2fs_ioc_defragment(filp, arg); | |
fbfa2cc5 JK |
2096 | default: |
2097 | return -ENOTTY; | |
2098 | } | |
2099 | } | |
2100 | ||
fcc85a4d JK |
2101 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2102 | { | |
b439b103 JK |
2103 | struct file *file = iocb->ki_filp; |
2104 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2105 | struct blk_plug plug; |
b439b103 | 2106 | ssize_t ret; |
fcc85a4d JK |
2107 | |
2108 | if (f2fs_encrypted_inode(inode) && | |
0b81d077 JK |
2109 | !fscrypt_has_encryption_key(inode) && |
2110 | fscrypt_get_encryption_info(inode)) | |
fcc85a4d JK |
2111 | return -EACCES; |
2112 | ||
b439b103 JK |
2113 | inode_lock(inode); |
2114 | ret = generic_write_checks(iocb, from); | |
2115 | if (ret > 0) { | |
2116 | ret = f2fs_preallocate_blocks(iocb, from); | |
9dfa1baf JK |
2117 | if (!ret) { |
2118 | blk_start_plug(&plug); | |
b439b103 | 2119 | ret = __generic_file_write_iter(iocb, from); |
9dfa1baf JK |
2120 | blk_finish_plug(&plug); |
2121 | } | |
b439b103 JK |
2122 | } |
2123 | inode_unlock(inode); | |
2124 | ||
e2592217 CH |
2125 | if (ret > 0) |
2126 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2127 | return ret; |
fcc85a4d JK |
2128 | } |
2129 | ||
e9750824 NJ |
2130 | #ifdef CONFIG_COMPAT |
2131 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2132 | { | |
2133 | switch (cmd) { | |
2134 | case F2FS_IOC32_GETFLAGS: | |
2135 | cmd = F2FS_IOC_GETFLAGS; | |
2136 | break; | |
2137 | case F2FS_IOC32_SETFLAGS: | |
2138 | cmd = F2FS_IOC_SETFLAGS; | |
2139 | break; | |
04ef4b62 CY |
2140 | case F2FS_IOC32_GETVERSION: |
2141 | cmd = F2FS_IOC_GETVERSION; | |
2142 | break; | |
2143 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2144 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2145 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2146 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2147 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2148 | case F2FS_IOC_SHUTDOWN: | |
2149 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2150 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2151 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2152 | case F2FS_IOC_GARBAGE_COLLECT: | |
2153 | case F2FS_IOC_WRITE_CHECKPOINT: | |
2154 | case F2FS_IOC_DEFRAGMENT: | |
2155 | break; | |
e9750824 NJ |
2156 | default: |
2157 | return -ENOIOCTLCMD; | |
2158 | } | |
2159 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2160 | } | |
2161 | #endif | |
2162 | ||
fbfa2cc5 | 2163 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2164 | .llseek = f2fs_llseek, |
aad4f8bb | 2165 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2166 | .write_iter = f2fs_file_write_iter, |
2167 | .open = f2fs_file_open, | |
12662234 | 2168 | .release = f2fs_release_file, |
fbfa2cc5 JK |
2169 | .mmap = f2fs_file_mmap, |
2170 | .fsync = f2fs_sync_file, | |
2171 | .fallocate = f2fs_fallocate, | |
2172 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2173 | #ifdef CONFIG_COMPAT |
2174 | .compat_ioctl = f2fs_compat_ioctl, | |
2175 | #endif | |
fbfa2cc5 | 2176 | .splice_read = generic_file_splice_read, |
8d020765 | 2177 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2178 | }; |