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> |
f424f664 | 23 | #include <linux/random.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); | |
84 | SetPageUptodate(page); | |
85 | ||
e943a10d | 86 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
87 | mapped: |
88 | /* fill the page */ | |
fec1d657 | 89 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
90 | |
91 | /* wait for GCed encrypted page writeback */ | |
92 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) | |
93 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); | |
94 | ||
5b339124 CY |
95 | /* if gced page is attached, don't write to cold segment */ |
96 | clear_cold_data(page); | |
fbfa2cc5 JK |
97 | out: |
98 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 99 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 JK |
100 | return block_page_mkwrite_return(err); |
101 | } | |
102 | ||
103 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
692bb55d | 104 | .fault = filemap_fault, |
f1820361 | 105 | .map_pages = filemap_map_pages, |
692bb55d | 106 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
107 | }; |
108 | ||
354a3399 JK |
109 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
110 | { | |
111 | struct dentry *dentry; | |
112 | ||
113 | inode = igrab(inode); | |
114 | dentry = d_find_any_alias(inode); | |
115 | iput(inode); | |
116 | if (!dentry) | |
117 | return 0; | |
118 | ||
e7d55452 | 119 | if (update_dent_inode(inode, inode, &dentry->d_name)) { |
f0947e5c JK |
120 | dput(dentry); |
121 | return 0; | |
122 | } | |
354a3399 | 123 | |
f0947e5c JK |
124 | *pino = parent_ino(dentry); |
125 | dput(dentry); | |
354a3399 JK |
126 | return 1; |
127 | } | |
128 | ||
9d1589ef CY |
129 | static inline bool need_do_checkpoint(struct inode *inode) |
130 | { | |
4081363f | 131 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
132 | bool need_cp = false; |
133 | ||
134 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
135 | need_cp = true; | |
e7d55452 JK |
136 | else if (file_enc_name(inode) && need_dentry_mark(sbi, inode->i_ino)) |
137 | need_cp = true; | |
9d1589ef CY |
138 | else if (file_wrong_pino(inode)) |
139 | need_cp = true; | |
140 | else if (!space_for_roll_forward(sbi)) | |
141 | need_cp = true; | |
142 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
143 | need_cp = true; | |
144 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
145 | need_cp = true; | |
d5053a34 JK |
146 | else if (test_opt(sbi, FASTBOOT)) |
147 | need_cp = true; | |
a344b9fd JK |
148 | else if (sbi->active_logs == 2) |
149 | need_cp = true; | |
9d1589ef CY |
150 | |
151 | return need_cp; | |
152 | } | |
153 | ||
9c7bb702 CL |
154 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
155 | { | |
156 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
157 | bool ret = false; | |
158 | /* But we need to avoid that there are some inode updates */ | |
159 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
160 | ret = true; | |
161 | f2fs_put_page(i, 0); | |
162 | return ret; | |
163 | } | |
164 | ||
51455b19 CL |
165 | static void try_to_fix_pino(struct inode *inode) |
166 | { | |
167 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
168 | nid_t pino; | |
169 | ||
170 | down_write(&fi->i_sem); | |
171 | fi->xattr_ver = 0; | |
172 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && | |
173 | get_parent_ino(inode, &pino)) { | |
174 | fi->i_pino = pino; | |
175 | file_got_pino(inode); | |
176 | up_write(&fi->i_sem); | |
177 | ||
178 | mark_inode_dirty_sync(inode); | |
179 | f2fs_write_inode(inode, NULL); | |
180 | } else { | |
181 | up_write(&fi->i_sem); | |
182 | } | |
183 | } | |
184 | ||
608514de JK |
185 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
186 | int datasync, bool atomic) | |
fbfa2cc5 JK |
187 | { |
188 | struct inode *inode = file->f_mapping->host; | |
d928bfbf | 189 | struct f2fs_inode_info *fi = F2FS_I(inode); |
4081363f | 190 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 191 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
192 | int ret = 0; |
193 | bool need_cp = false; | |
194 | struct writeback_control wbc = { | |
c81bf1c8 | 195 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
196 | .nr_to_write = LONG_MAX, |
197 | .for_reclaim = 0, | |
198 | }; | |
199 | ||
6bacf52f | 200 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
201 | return 0; |
202 | ||
a2a4a7e4 | 203 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
204 | |
205 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 206 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
ea1aa12c | 207 | set_inode_flag(fi, FI_NEED_IPU); |
fbfa2cc5 | 208 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
c1ce1b02 JK |
209 | clear_inode_flag(fi, FI_NEED_IPU); |
210 | ||
a2a4a7e4 NJ |
211 | if (ret) { |
212 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 213 | return ret; |
a2a4a7e4 | 214 | } |
fbfa2cc5 | 215 | |
9c7bb702 | 216 | /* if the inode is dirty, let's recover all the time */ |
2286c020 JK |
217 | if (!datasync) { |
218 | f2fs_write_inode(inode, NULL); | |
9c7bb702 CL |
219 | goto go_write; |
220 | } | |
221 | ||
6d99ba41 JK |
222 | /* |
223 | * if there is no written data, don't waste time to write recovery info. | |
224 | */ | |
225 | if (!is_inode_flag_set(fi, FI_APPEND_WRITE) && | |
2403c155 | 226 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 227 | |
9c7bb702 CL |
228 | /* it may call write_inode just prior to fsync */ |
229 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 230 | goto go_write; |
19c9c466 | 231 | |
6d99ba41 | 232 | if (is_inode_flag_set(fi, FI_UPDATE_WRITE) || |
2403c155 | 233 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
234 | goto flush_out; |
235 | goto out; | |
236 | } | |
19c9c466 | 237 | go_write: |
e5d2385e JK |
238 | /* |
239 | * Both of fdatasync() and fsync() are able to be recovered from | |
240 | * sudden-power-off. | |
241 | */ | |
9d1589ef CY |
242 | down_read(&fi->i_sem); |
243 | need_cp = need_do_checkpoint(inode); | |
d928bfbf JK |
244 | up_read(&fi->i_sem); |
245 | ||
fbfa2cc5 JK |
246 | if (need_cp) { |
247 | /* all the dirty node pages should be flushed for POR */ | |
248 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 249 | |
51455b19 CL |
250 | /* |
251 | * We've secured consistency through sync_fs. Following pino | |
252 | * will be used only for fsynced inodes after checkpoint. | |
253 | */ | |
254 | try_to_fix_pino(inode); | |
cff28521 JK |
255 | clear_inode_flag(fi, FI_APPEND_WRITE); |
256 | clear_inode_flag(fi, FI_UPDATE_WRITE); | |
51455b19 CL |
257 | goto out; |
258 | } | |
88bd02c9 | 259 | sync_nodes: |
608514de | 260 | ret = fsync_node_pages(sbi, ino, &wbc, atomic); |
c267ec15 JK |
261 | if (ret) |
262 | goto out; | |
51455b19 | 263 | |
871f599f | 264 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
265 | if (unlikely(f2fs_cp_error(sbi))) { |
266 | ret = -EIO; | |
871f599f | 267 | goto out; |
6d5a1495 | 268 | } |
871f599f | 269 | |
51455b19 CL |
270 | if (need_inode_block_update(sbi, ino)) { |
271 | mark_inode_dirty_sync(inode); | |
272 | f2fs_write_inode(inode, NULL); | |
273 | goto sync_nodes; | |
fbfa2cc5 | 274 | } |
51455b19 CL |
275 | |
276 | ret = wait_on_node_pages_writeback(sbi, ino); | |
277 | if (ret) | |
278 | goto out; | |
279 | ||
280 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 281 | remove_ino_entry(sbi, ino, APPEND_INO); |
51455b19 CL |
282 | clear_inode_flag(fi, FI_APPEND_WRITE); |
283 | flush_out: | |
a49324f1 | 284 | remove_ino_entry(sbi, ino, UPDATE_INO); |
51455b19 CL |
285 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
286 | ret = f2fs_issue_flush(sbi); | |
d0239e1b | 287 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 288 | out: |
a2a4a7e4 | 289 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 290 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
291 | return ret; |
292 | } | |
293 | ||
608514de JK |
294 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
295 | { | |
296 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
297 | } | |
298 | ||
7f7670fe JK |
299 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
300 | pgoff_t pgofs, int whence) | |
301 | { | |
302 | struct pagevec pvec; | |
303 | int nr_pages; | |
304 | ||
305 | if (whence != SEEK_DATA) | |
306 | return 0; | |
307 | ||
308 | /* find first dirty page index */ | |
309 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
310 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
311 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 312 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
313 | pagevec_release(&pvec); |
314 | return pgofs; | |
315 | } | |
316 | ||
317 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
318 | int whence) | |
319 | { | |
320 | switch (whence) { | |
321 | case SEEK_DATA: | |
322 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
323 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
324 | return true; | |
325 | break; | |
326 | case SEEK_HOLE: | |
327 | if (blkaddr == NULL_ADDR) | |
328 | return true; | |
329 | break; | |
330 | } | |
331 | return false; | |
332 | } | |
333 | ||
267378d4 CY |
334 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
335 | { | |
336 | struct inode *inode = file->f_mapping->host; | |
337 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
338 | struct dnode_of_data dn; | |
7f7670fe JK |
339 | pgoff_t pgofs, end_offset, dirty; |
340 | loff_t data_ofs = offset; | |
341 | loff_t isize; | |
267378d4 CY |
342 | int err = 0; |
343 | ||
5955102c | 344 | inode_lock(inode); |
267378d4 CY |
345 | |
346 | isize = i_size_read(inode); | |
347 | if (offset >= isize) | |
348 | goto fail; | |
349 | ||
350 | /* handle inline data case */ | |
622f28ae | 351 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
352 | if (whence == SEEK_HOLE) |
353 | data_ofs = isize; | |
354 | goto found; | |
355 | } | |
356 | ||
09cbfeaf | 357 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 358 | |
7f7670fe JK |
359 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
360 | ||
09cbfeaf | 361 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
362 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
363 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); | |
364 | if (err && err != -ENOENT) { | |
365 | goto fail; | |
366 | } else if (err == -ENOENT) { | |
e1c42045 | 367 | /* direct node does not exists */ |
267378d4 | 368 | if (whence == SEEK_DATA) { |
3cf45747 | 369 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
370 | continue; |
371 | } else { | |
372 | goto found; | |
373 | } | |
374 | } | |
375 | ||
81ca7350 | 376 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
377 | |
378 | /* find data/hole in dnode block */ | |
379 | for (; dn.ofs_in_node < end_offset; | |
380 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 381 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
382 | block_t blkaddr; |
383 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
384 | ||
7f7670fe | 385 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
386 | f2fs_put_dnode(&dn); |
387 | goto found; | |
388 | } | |
389 | } | |
390 | f2fs_put_dnode(&dn); | |
391 | } | |
392 | ||
393 | if (whence == SEEK_DATA) | |
394 | goto fail; | |
267378d4 | 395 | found: |
fe369bc8 JK |
396 | if (whence == SEEK_HOLE && data_ofs > isize) |
397 | data_ofs = isize; | |
5955102c | 398 | inode_unlock(inode); |
267378d4 CY |
399 | return vfs_setpos(file, data_ofs, maxbytes); |
400 | fail: | |
5955102c | 401 | inode_unlock(inode); |
267378d4 CY |
402 | return -ENXIO; |
403 | } | |
404 | ||
405 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
406 | { | |
407 | struct inode *inode = file->f_mapping->host; | |
408 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
409 | ||
410 | switch (whence) { | |
411 | case SEEK_SET: | |
412 | case SEEK_CUR: | |
413 | case SEEK_END: | |
414 | return generic_file_llseek_size(file, offset, whence, | |
415 | maxbytes, i_size_read(inode)); | |
416 | case SEEK_DATA: | |
417 | case SEEK_HOLE: | |
0b4c5afd JK |
418 | if (offset < 0) |
419 | return -ENXIO; | |
267378d4 CY |
420 | return f2fs_seek_block(file, offset, whence); |
421 | } | |
422 | ||
423 | return -EINVAL; | |
424 | } | |
425 | ||
fbfa2cc5 JK |
426 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
427 | { | |
b3d208f9 | 428 | struct inode *inode = file_inode(file); |
b9d777b8 | 429 | int err; |
b3d208f9 | 430 | |
fcc85a4d | 431 | if (f2fs_encrypted_inode(inode)) { |
0b81d077 | 432 | err = fscrypt_get_encryption_info(inode); |
fcc85a4d JK |
433 | if (err) |
434 | return 0; | |
ae108668 CY |
435 | if (!f2fs_encrypted_inode(inode)) |
436 | return -ENOKEY; | |
fcc85a4d JK |
437 | } |
438 | ||
b3d208f9 | 439 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
440 | err = f2fs_convert_inline_inode(inode); |
441 | if (err) | |
442 | return err; | |
b3d208f9 | 443 | |
fbfa2cc5 JK |
444 | file_accessed(file); |
445 | vma->vm_ops = &f2fs_file_vm_ops; | |
446 | return 0; | |
447 | } | |
448 | ||
fcc85a4d JK |
449 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
450 | { | |
451 | int ret = generic_file_open(inode, filp); | |
33b13951 | 452 | struct dentry *dir; |
fcc85a4d JK |
453 | |
454 | if (!ret && f2fs_encrypted_inode(inode)) { | |
0b81d077 | 455 | ret = fscrypt_get_encryption_info(inode); |
fcc85a4d | 456 | if (ret) |
ae108668 | 457 | return -EACCES; |
0b81d077 | 458 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 459 | return -ENOKEY; |
fcc85a4d | 460 | } |
33b13951 JK |
461 | dir = dget_parent(file_dentry(filp)); |
462 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
463 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
464 | dput(dir); | |
8074bb51 | 465 | return -EPERM; |
33b13951 JK |
466 | } |
467 | dput(dir); | |
fcc85a4d JK |
468 | return ret; |
469 | } | |
470 | ||
b292dcab | 471 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 472 | { |
4081363f | 473 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 474 | struct f2fs_node *raw_node; |
19b2c30d | 475 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
476 | __le32 *addr; |
477 | ||
45590710 | 478 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
479 | addr = blkaddr_in_node(raw_node) + ofs; |
480 | ||
6c311ec6 | 481 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
482 | block_t blkaddr = le32_to_cpu(*addr); |
483 | if (blkaddr == NULL_ADDR) | |
484 | continue; | |
485 | ||
e1509cf2 | 486 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 487 | set_data_blkaddr(dn); |
fbfa2cc5 | 488 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb JK |
489 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
490 | clear_inode_flag(F2FS_I(dn->inode), | |
491 | FI_FIRST_BLOCK_WRITTEN); | |
fbfa2cc5 JK |
492 | nr_free++; |
493 | } | |
19b2c30d | 494 | |
fbfa2cc5 | 495 | if (nr_free) { |
19b2c30d CY |
496 | pgoff_t fofs; |
497 | /* | |
498 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
499 | * we will invalidate all blkaddr in the whole range. | |
500 | */ | |
501 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 502 | dn->inode) + ofs; |
19b2c30d | 503 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 504 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
505 | sync_inode_page(dn); |
506 | } | |
507 | dn->ofs_in_node = ofs; | |
51dd6249 | 508 | |
d0239e1b | 509 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
510 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
511 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
512 | return nr_free; |
513 | } | |
514 | ||
515 | void truncate_data_blocks(struct dnode_of_data *dn) | |
516 | { | |
517 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
518 | } | |
519 | ||
0bfcfcca | 520 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 521 | bool cache_only) |
fbfa2cc5 | 522 | { |
09cbfeaf KS |
523 | unsigned offset = from & (PAGE_SIZE - 1); |
524 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 525 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
526 | struct page *page; |
527 | ||
43f3eae1 | 528 | if (!offset && !cache_only) |
b3d208f9 | 529 | return 0; |
fbfa2cc5 | 530 | |
43f3eae1 | 531 | if (cache_only) { |
a56c7c6f | 532 | page = f2fs_grab_cache_page(mapping, index, false); |
43f3eae1 JK |
533 | if (page && PageUptodate(page)) |
534 | goto truncate_out; | |
535 | f2fs_put_page(page, 1); | |
b3d208f9 | 536 | return 0; |
43f3eae1 | 537 | } |
fbfa2cc5 | 538 | |
a56c7c6f | 539 | page = get_lock_data_page(inode, index, true); |
43f3eae1 JK |
540 | if (IS_ERR(page)) |
541 | return 0; | |
542 | truncate_out: | |
fec1d657 | 543 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 544 | zero_user(page, offset, PAGE_SIZE - offset); |
0b81d077 JK |
545 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
546 | !S_ISREG(inode->i_mode)) | |
0bfcfcca | 547 | set_page_dirty(page); |
fbfa2cc5 | 548 | f2fs_put_page(page, 1); |
b3d208f9 | 549 | return 0; |
fbfa2cc5 JK |
550 | } |
551 | ||
764aa3e9 | 552 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 553 | { |
4081363f | 554 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
555 | unsigned int blocksize = inode->i_sb->s_blocksize; |
556 | struct dnode_of_data dn; | |
557 | pgoff_t free_from; | |
9ffe0fb5 | 558 | int count = 0, err = 0; |
b3d208f9 | 559 | struct page *ipage; |
0bfcfcca | 560 | bool truncate_page = false; |
fbfa2cc5 | 561 | |
51dd6249 NJ |
562 | trace_f2fs_truncate_blocks_enter(inode, from); |
563 | ||
f7ef9b83 | 564 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 565 | |
09210c97 CY |
566 | if (free_from >= sbi->max_file_blocks) |
567 | goto free_partial; | |
568 | ||
764aa3e9 JK |
569 | if (lock) |
570 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 571 | |
b3d208f9 JK |
572 | ipage = get_node_page(sbi, inode->i_ino); |
573 | if (IS_ERR(ipage)) { | |
574 | err = PTR_ERR(ipage); | |
575 | goto out; | |
576 | } | |
577 | ||
578 | if (f2fs_has_inline_data(inode)) { | |
0bfcfcca CY |
579 | if (truncate_inline_inode(ipage, from)) |
580 | set_page_dirty(ipage); | |
b3d208f9 | 581 | f2fs_put_page(ipage, 1); |
0bfcfcca | 582 | truncate_page = true; |
b3d208f9 JK |
583 | goto out; |
584 | } | |
585 | ||
586 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 587 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
588 | if (err) { |
589 | if (err == -ENOENT) | |
590 | goto free_next; | |
b3d208f9 | 591 | goto out; |
1ce86bf6 JK |
592 | } |
593 | ||
81ca7350 | 594 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
595 | |
596 | count -= dn.ofs_in_node; | |
9850cf4a | 597 | f2fs_bug_on(sbi, count < 0); |
39936837 | 598 | |
fbfa2cc5 JK |
599 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
600 | truncate_data_blocks_range(&dn, count); | |
601 | free_from += count; | |
602 | } | |
603 | ||
604 | f2fs_put_dnode(&dn); | |
605 | free_next: | |
606 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
607 | out: |
608 | if (lock) | |
609 | f2fs_unlock_op(sbi); | |
09210c97 | 610 | free_partial: |
b3d208f9 JK |
611 | /* lastly zero out the first data page */ |
612 | if (!err) | |
0bfcfcca | 613 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 614 | |
51dd6249 | 615 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
616 | return err; |
617 | } | |
618 | ||
b0154891 | 619 | int f2fs_truncate(struct inode *inode, bool lock) |
fbfa2cc5 | 620 | { |
b0154891 CY |
621 | int err; |
622 | ||
fbfa2cc5 JK |
623 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
624 | S_ISLNK(inode->i_mode))) | |
b0154891 | 625 | return 0; |
fbfa2cc5 | 626 | |
51dd6249 NJ |
627 | trace_f2fs_truncate(inode); |
628 | ||
92dffd01 | 629 | /* we should check inline_data size */ |
b9d777b8 | 630 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
631 | err = f2fs_convert_inline_inode(inode); |
632 | if (err) | |
633 | return err; | |
92dffd01 JK |
634 | } |
635 | ||
b0154891 CY |
636 | err = truncate_blocks(inode, i_size_read(inode), lock); |
637 | if (err) | |
638 | return err; | |
639 | ||
640 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
641 | mark_inode_dirty(inode); | |
642 | return 0; | |
fbfa2cc5 JK |
643 | } |
644 | ||
2d4d9fb5 | 645 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
646 | struct dentry *dentry, struct kstat *stat) |
647 | { | |
2b0143b5 | 648 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
649 | generic_fillattr(inode, stat); |
650 | stat->blocks <<= 3; | |
651 | return 0; | |
652 | } | |
653 | ||
654 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
655 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
656 | { | |
657 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
658 | unsigned int ia_valid = attr->ia_valid; | |
659 | ||
660 | if (ia_valid & ATTR_UID) | |
661 | inode->i_uid = attr->ia_uid; | |
662 | if (ia_valid & ATTR_GID) | |
663 | inode->i_gid = attr->ia_gid; | |
664 | if (ia_valid & ATTR_ATIME) | |
665 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
666 | inode->i_sb->s_time_gran); | |
667 | if (ia_valid & ATTR_MTIME) | |
668 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
669 | inode->i_sb->s_time_gran); | |
670 | if (ia_valid & ATTR_CTIME) | |
671 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
672 | inode->i_sb->s_time_gran); | |
673 | if (ia_valid & ATTR_MODE) { | |
674 | umode_t mode = attr->ia_mode; | |
675 | ||
676 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
677 | mode &= ~S_ISGID; | |
678 | set_acl_inode(fi, mode); | |
679 | } | |
680 | } | |
681 | #else | |
682 | #define __setattr_copy setattr_copy | |
683 | #endif | |
684 | ||
685 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
686 | { | |
2b0143b5 | 687 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
688 | struct f2fs_inode_info *fi = F2FS_I(inode); |
689 | int err; | |
690 | ||
691 | err = inode_change_ok(inode, attr); | |
692 | if (err) | |
693 | return err; | |
694 | ||
09db6a2e | 695 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d | 696 | if (f2fs_encrypted_inode(inode) && |
0b81d077 | 697 | fscrypt_get_encryption_info(inode)) |
fcc85a4d JK |
698 | return -EACCES; |
699 | ||
3c454145 | 700 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 701 | truncate_setsize(inode, attr->ia_size); |
b0154891 CY |
702 | err = f2fs_truncate(inode, true); |
703 | if (err) | |
704 | return err; | |
2c4db1a6 | 705 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
09db6a2e CY |
706 | } else { |
707 | /* | |
3c454145 CY |
708 | * do not trim all blocks after i_size if target size is |
709 | * larger than i_size. | |
09db6a2e | 710 | */ |
3c454145 | 711 | truncate_setsize(inode, attr->ia_size); |
0cab80ee CY |
712 | |
713 | /* should convert inline inode here */ | |
b9d777b8 | 714 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
715 | err = f2fs_convert_inline_inode(inode); |
716 | if (err) | |
717 | return err; | |
718 | } | |
345a6b2e | 719 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
09db6a2e | 720 | } |
fbfa2cc5 JK |
721 | } |
722 | ||
723 | __setattr_copy(inode, attr); | |
724 | ||
725 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 726 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
fbfa2cc5 JK |
727 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
728 | inode->i_mode = fi->i_acl_mode; | |
729 | clear_inode_flag(fi, FI_ACL_MODE); | |
730 | } | |
731 | } | |
732 | ||
733 | mark_inode_dirty(inode); | |
734 | return err; | |
735 | } | |
736 | ||
737 | const struct inode_operations f2fs_file_inode_operations = { | |
738 | .getattr = f2fs_getattr, | |
739 | .setattr = f2fs_setattr, | |
740 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 741 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
742 | #ifdef CONFIG_F2FS_FS_XATTR |
743 | .setxattr = generic_setxattr, | |
744 | .getxattr = generic_getxattr, | |
745 | .listxattr = f2fs_listxattr, | |
746 | .removexattr = generic_removexattr, | |
747 | #endif | |
9ab70134 | 748 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
749 | }; |
750 | ||
6394328a | 751 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
752 | loff_t start, loff_t len) |
753 | { | |
4081363f | 754 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
755 | struct page *page; |
756 | ||
757 | if (!len) | |
6394328a | 758 | return 0; |
fbfa2cc5 | 759 | |
2c4db1a6 | 760 | f2fs_balance_fs(sbi, true); |
bd43df02 | 761 | |
e479556b | 762 | f2fs_lock_op(sbi); |
64aa7ed9 | 763 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 764 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 765 | |
6394328a CY |
766 | if (IS_ERR(page)) |
767 | return PTR_ERR(page); | |
768 | ||
fec1d657 | 769 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
770 | zero_user(page, start, len); |
771 | set_page_dirty(page); | |
772 | f2fs_put_page(page, 1); | |
773 | return 0; | |
fbfa2cc5 JK |
774 | } |
775 | ||
776 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
777 | { | |
fbfa2cc5 JK |
778 | int err; |
779 | ||
ea58711e | 780 | while (pg_start < pg_end) { |
fbfa2cc5 | 781 | struct dnode_of_data dn; |
ea58711e | 782 | pgoff_t end_offset, count; |
9eaeba70 | 783 | |
fbfa2cc5 | 784 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 785 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 786 | if (err) { |
ea58711e CY |
787 | if (err == -ENOENT) { |
788 | pg_start++; | |
fbfa2cc5 | 789 | continue; |
ea58711e | 790 | } |
fbfa2cc5 JK |
791 | return err; |
792 | } | |
793 | ||
81ca7350 | 794 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
795 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
796 | ||
797 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
798 | ||
799 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 800 | f2fs_put_dnode(&dn); |
ea58711e CY |
801 | |
802 | pg_start += count; | |
fbfa2cc5 JK |
803 | } |
804 | return 0; | |
805 | } | |
806 | ||
a66c7b2f | 807 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
808 | { |
809 | pgoff_t pg_start, pg_end; | |
810 | loff_t off_start, off_end; | |
b9d777b8 | 811 | int ret; |
fbfa2cc5 | 812 | |
b9d777b8 JK |
813 | ret = f2fs_convert_inline_inode(inode); |
814 | if (ret) | |
815 | return ret; | |
9ffe0fb5 | 816 | |
09cbfeaf KS |
817 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
818 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 819 | |
09cbfeaf KS |
820 | off_start = offset & (PAGE_SIZE - 1); |
821 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
822 | |
823 | if (pg_start == pg_end) { | |
6394328a | 824 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 825 | off_end - off_start); |
6394328a CY |
826 | if (ret) |
827 | return ret; | |
fbfa2cc5 | 828 | } else { |
6394328a CY |
829 | if (off_start) { |
830 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 831 | PAGE_SIZE - off_start); |
6394328a CY |
832 | if (ret) |
833 | return ret; | |
834 | } | |
835 | if (off_end) { | |
836 | ret = fill_zero(inode, pg_end, 0, off_end); | |
837 | if (ret) | |
838 | return ret; | |
839 | } | |
fbfa2cc5 JK |
840 | |
841 | if (pg_start < pg_end) { | |
842 | struct address_space *mapping = inode->i_mapping; | |
843 | loff_t blk_start, blk_end; | |
4081363f | 844 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 845 | |
2c4db1a6 | 846 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 847 | |
09cbfeaf KS |
848 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
849 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
fbfa2cc5 JK |
850 | truncate_inode_pages_range(mapping, blk_start, |
851 | blk_end - 1); | |
39936837 | 852 | |
e479556b | 853 | f2fs_lock_op(sbi); |
fbfa2cc5 | 854 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 855 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
856 | } |
857 | } | |
858 | ||
fbfa2cc5 JK |
859 | return ret; |
860 | } | |
861 | ||
6e2c64ad JK |
862 | static int __exchange_data_block(struct inode *inode, pgoff_t src, |
863 | pgoff_t dst, bool full) | |
b4ace337 CY |
864 | { |
865 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
866 | struct dnode_of_data dn; | |
6e2c64ad JK |
867 | block_t new_addr; |
868 | bool do_replace = false; | |
869 | int ret; | |
ecbaa406 | 870 | |
6e2c64ad JK |
871 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
872 | ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA); | |
873 | if (ret && ret != -ENOENT) { | |
874 | return ret; | |
875 | } else if (ret == -ENOENT) { | |
876 | new_addr = NULL_ADDR; | |
877 | } else { | |
878 | new_addr = dn.data_blkaddr; | |
879 | if (!is_checkpointed_data(sbi, new_addr)) { | |
6e2c64ad | 880 | /* do not invalidate this block address */ |
f28b3434 | 881 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
6e2c64ad | 882 | do_replace = true; |
b4ace337 | 883 | } |
6e2c64ad JK |
884 | f2fs_put_dnode(&dn); |
885 | } | |
b4ace337 | 886 | |
6e2c64ad JK |
887 | if (new_addr == NULL_ADDR) |
888 | return full ? truncate_hole(inode, dst, dst + 1) : 0; | |
b4ace337 | 889 | |
6e2c64ad JK |
890 | if (do_replace) { |
891 | struct page *ipage = get_node_page(sbi, inode->i_ino); | |
892 | struct node_info ni; | |
b4ace337 | 893 | |
6e2c64ad JK |
894 | if (IS_ERR(ipage)) { |
895 | ret = PTR_ERR(ipage); | |
896 | goto err_out; | |
897 | } | |
b4ace337 | 898 | |
6e2c64ad JK |
899 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
900 | ret = f2fs_reserve_block(&dn, dst); | |
901 | if (ret) | |
902 | goto err_out; | |
b4ace337 | 903 | |
6e2c64ad | 904 | truncate_data_blocks_range(&dn, 1); |
b4ace337 | 905 | |
6e2c64ad JK |
906 | get_node_info(sbi, dn.nid, &ni); |
907 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr, | |
28bc106b | 908 | ni.version, true, false); |
6e2c64ad JK |
909 | f2fs_put_dnode(&dn); |
910 | } else { | |
911 | struct page *psrc, *pdst; | |
912 | ||
a56c7c6f | 913 | psrc = get_lock_data_page(inode, src, true); |
6e2c64ad JK |
914 | if (IS_ERR(psrc)) |
915 | return PTR_ERR(psrc); | |
8ef2af45 | 916 | pdst = get_new_data_page(inode, NULL, dst, true); |
6e2c64ad JK |
917 | if (IS_ERR(pdst)) { |
918 | f2fs_put_page(psrc, 1); | |
919 | return PTR_ERR(pdst); | |
920 | } | |
921 | f2fs_copy_page(psrc, pdst); | |
922 | set_page_dirty(pdst); | |
923 | f2fs_put_page(pdst, 1); | |
924 | f2fs_put_page(psrc, 1); | |
b4ace337 | 925 | |
6e2c64ad JK |
926 | return truncate_hole(inode, src, src + 1); |
927 | } | |
928 | return 0; | |
b4ace337 | 929 | |
6e2c64ad JK |
930 | err_out: |
931 | if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) { | |
f28b3434 | 932 | f2fs_update_data_blkaddr(&dn, new_addr); |
6e2c64ad JK |
933 | f2fs_put_dnode(&dn); |
934 | } | |
935 | return ret; | |
936 | } | |
b4ace337 | 937 | |
6e2c64ad JK |
938 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
939 | { | |
940 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
941 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
942 | int ret = 0; | |
943 | ||
944 | for (; end < nrpages; start++, end++) { | |
2c4db1a6 | 945 | f2fs_balance_fs(sbi, true); |
6e2c64ad JK |
946 | f2fs_lock_op(sbi); |
947 | ret = __exchange_data_block(inode, end, start, true); | |
ecbaa406 | 948 | f2fs_unlock_op(sbi); |
6e2c64ad JK |
949 | if (ret) |
950 | break; | |
b4ace337 | 951 | } |
b4ace337 CY |
952 | return ret; |
953 | } | |
954 | ||
955 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
956 | { | |
957 | pgoff_t pg_start, pg_end; | |
958 | loff_t new_size; | |
959 | int ret; | |
960 | ||
b4ace337 CY |
961 | if (offset + len >= i_size_read(inode)) |
962 | return -EINVAL; | |
963 | ||
964 | /* collapse range should be aligned to block size of f2fs. */ | |
965 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
966 | return -EINVAL; | |
967 | ||
b9d777b8 JK |
968 | ret = f2fs_convert_inline_inode(inode); |
969 | if (ret) | |
970 | return ret; | |
97a7b2c2 | 971 | |
09cbfeaf KS |
972 | pg_start = offset >> PAGE_SHIFT; |
973 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 CY |
974 | |
975 | /* write out all dirty pages from offset */ | |
976 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
977 | if (ret) | |
978 | return ret; | |
979 | ||
980 | truncate_pagecache(inode, offset); | |
981 | ||
982 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
983 | if (ret) | |
984 | return ret; | |
985 | ||
6e2c64ad JK |
986 | /* write out all moved pages, if possible */ |
987 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
988 | truncate_pagecache(inode, offset); | |
989 | ||
b4ace337 | 990 | new_size = i_size_read(inode) - len; |
6e2c64ad | 991 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
992 | |
993 | ret = truncate_blocks(inode, new_size, true); | |
994 | if (!ret) | |
995 | i_size_write(inode, new_size); | |
996 | ||
997 | return ret; | |
998 | } | |
999 | ||
75cd4e09 CY |
1000 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1001 | int mode) | |
1002 | { | |
1003 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1004 | struct address_space *mapping = inode->i_mapping; | |
1005 | pgoff_t index, pg_start, pg_end; | |
1006 | loff_t new_size = i_size_read(inode); | |
1007 | loff_t off_start, off_end; | |
1008 | int ret = 0; | |
1009 | ||
75cd4e09 CY |
1010 | ret = inode_newsize_ok(inode, (len + offset)); |
1011 | if (ret) | |
1012 | return ret; | |
1013 | ||
b9d777b8 JK |
1014 | ret = f2fs_convert_inline_inode(inode); |
1015 | if (ret) | |
1016 | return ret; | |
75cd4e09 CY |
1017 | |
1018 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1019 | if (ret) | |
1020 | return ret; | |
1021 | ||
1022 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1023 | ||
09cbfeaf KS |
1024 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1025 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1026 | |
09cbfeaf KS |
1027 | off_start = offset & (PAGE_SIZE - 1); |
1028 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1029 | |
1030 | if (pg_start == pg_end) { | |
6394328a CY |
1031 | ret = fill_zero(inode, pg_start, off_start, |
1032 | off_end - off_start); | |
1033 | if (ret) | |
1034 | return ret; | |
1035 | ||
75cd4e09 CY |
1036 | if (offset + len > new_size) |
1037 | new_size = offset + len; | |
1038 | new_size = max_t(loff_t, new_size, offset + len); | |
1039 | } else { | |
1040 | if (off_start) { | |
6394328a | 1041 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1042 | PAGE_SIZE - off_start); |
6394328a CY |
1043 | if (ret) |
1044 | return ret; | |
1045 | ||
75cd4e09 | 1046 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1047 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1048 | } |
1049 | ||
1050 | for (index = pg_start; index < pg_end; index++) { | |
1051 | struct dnode_of_data dn; | |
1052 | struct page *ipage; | |
1053 | ||
1054 | f2fs_lock_op(sbi); | |
1055 | ||
1056 | ipage = get_node_page(sbi, inode->i_ino); | |
1057 | if (IS_ERR(ipage)) { | |
1058 | ret = PTR_ERR(ipage); | |
1059 | f2fs_unlock_op(sbi); | |
1060 | goto out; | |
1061 | } | |
1062 | ||
1063 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
1064 | ret = f2fs_reserve_block(&dn, index); | |
1065 | if (ret) { | |
1066 | f2fs_unlock_op(sbi); | |
1067 | goto out; | |
1068 | } | |
1069 | ||
1070 | if (dn.data_blkaddr != NEW_ADDR) { | |
1071 | invalidate_blocks(sbi, dn.data_blkaddr); | |
f28b3434 | 1072 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); |
75cd4e09 CY |
1073 | } |
1074 | f2fs_put_dnode(&dn); | |
1075 | f2fs_unlock_op(sbi); | |
1076 | ||
1077 | new_size = max_t(loff_t, new_size, | |
09cbfeaf | 1078 | (loff_t)(index + 1) << PAGE_SHIFT); |
75cd4e09 CY |
1079 | } |
1080 | ||
1081 | if (off_end) { | |
6394328a CY |
1082 | ret = fill_zero(inode, pg_end, 0, off_end); |
1083 | if (ret) | |
1084 | goto out; | |
1085 | ||
75cd4e09 CY |
1086 | new_size = max_t(loff_t, new_size, offset + len); |
1087 | } | |
1088 | } | |
1089 | ||
1090 | out: | |
1091 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { | |
1092 | i_size_write(inode, new_size); | |
1093 | mark_inode_dirty(inode); | |
1094 | update_inode_page(inode); | |
1095 | } | |
1096 | ||
1097 | return ret; | |
1098 | } | |
1099 | ||
f62185d0 CY |
1100 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1101 | { | |
1102 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1103 | pgoff_t pg_start, pg_end, delta, nrpages, idx; | |
1104 | loff_t new_size; | |
6e2c64ad | 1105 | int ret = 0; |
f62185d0 | 1106 | |
f62185d0 CY |
1107 | new_size = i_size_read(inode) + len; |
1108 | if (new_size > inode->i_sb->s_maxbytes) | |
1109 | return -EFBIG; | |
1110 | ||
1111 | if (offset >= i_size_read(inode)) | |
1112 | return -EINVAL; | |
1113 | ||
1114 | /* insert range should be aligned to block size of f2fs. */ | |
1115 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1116 | return -EINVAL; | |
1117 | ||
b9d777b8 JK |
1118 | ret = f2fs_convert_inline_inode(inode); |
1119 | if (ret) | |
1120 | return ret; | |
97a7b2c2 | 1121 | |
2c4db1a6 | 1122 | f2fs_balance_fs(sbi, true); |
2a340760 | 1123 | |
f62185d0 CY |
1124 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1125 | if (ret) | |
1126 | return ret; | |
1127 | ||
1128 | /* write out all dirty pages from offset */ | |
1129 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1130 | if (ret) | |
1131 | return ret; | |
1132 | ||
1133 | truncate_pagecache(inode, offset); | |
1134 | ||
09cbfeaf KS |
1135 | pg_start = offset >> PAGE_SHIFT; |
1136 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 CY |
1137 | delta = pg_end - pg_start; |
1138 | nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
1139 | ||
1140 | for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) { | |
f62185d0 | 1141 | f2fs_lock_op(sbi); |
6e2c64ad | 1142 | ret = __exchange_data_block(inode, idx, idx + delta, false); |
f62185d0 | 1143 | f2fs_unlock_op(sbi); |
6e2c64ad JK |
1144 | if (ret) |
1145 | break; | |
f62185d0 CY |
1146 | } |
1147 | ||
6e2c64ad JK |
1148 | /* write out all moved pages, if possible */ |
1149 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1150 | truncate_pagecache(inode, offset); | |
1151 | ||
1152 | if (!ret) | |
1153 | i_size_write(inode, new_size); | |
f62185d0 CY |
1154 | return ret; |
1155 | } | |
1156 | ||
fbfa2cc5 JK |
1157 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1158 | loff_t len, int mode) | |
1159 | { | |
4081363f | 1160 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1161 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1162 | pgoff_t pg_end; | |
fbfa2cc5 | 1163 | loff_t new_size = i_size_read(inode); |
e12dd7bd JK |
1164 | loff_t off_end; |
1165 | int ret; | |
fbfa2cc5 JK |
1166 | |
1167 | ret = inode_newsize_ok(inode, (len + offset)); | |
1168 | if (ret) | |
1169 | return ret; | |
1170 | ||
b9d777b8 JK |
1171 | ret = f2fs_convert_inline_inode(inode); |
1172 | if (ret) | |
1173 | return ret; | |
9e09fc85 | 1174 | |
2c4db1a6 | 1175 | f2fs_balance_fs(sbi, true); |
2a340760 | 1176 | |
e12dd7bd | 1177 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1178 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1179 | |
e12dd7bd JK |
1180 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1181 | map.m_len = pg_end - map.m_lblk; | |
1182 | if (off_end) | |
1183 | map.m_len++; | |
ead43275 | 1184 | |
e12dd7bd JK |
1185 | ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1186 | if (ret) { | |
1187 | pgoff_t last_off; | |
fbfa2cc5 | 1188 | |
e12dd7bd JK |
1189 | if (!map.m_len) |
1190 | return ret; | |
98397ff3 | 1191 | |
e12dd7bd JK |
1192 | last_off = map.m_lblk + map.m_len - 1; |
1193 | ||
1194 | /* update new size to the failed position */ | |
1195 | new_size = (last_off == pg_end) ? offset + len: | |
1196 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1197 | } else { | |
1198 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1199 | } |
1200 | ||
e12dd7bd | 1201 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { |
fbfa2cc5 JK |
1202 | i_size_write(inode, new_size); |
1203 | mark_inode_dirty(inode); | |
ead43275 | 1204 | update_inode_page(inode); |
fbfa2cc5 JK |
1205 | } |
1206 | ||
1207 | return ret; | |
1208 | } | |
1209 | ||
1210 | static long f2fs_fallocate(struct file *file, int mode, | |
1211 | loff_t offset, loff_t len) | |
1212 | { | |
6131ffaa | 1213 | struct inode *inode = file_inode(file); |
587c0a42 | 1214 | long ret = 0; |
fbfa2cc5 | 1215 | |
c998012b CY |
1216 | /* f2fs only support ->fallocate for regular file */ |
1217 | if (!S_ISREG(inode->i_mode)) | |
1218 | return -EINVAL; | |
1219 | ||
f62185d0 CY |
1220 | if (f2fs_encrypted_inode(inode) && |
1221 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1222 | return -EOPNOTSUPP; |
1223 | ||
b4ace337 | 1224 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1225 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1226 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1227 | return -EOPNOTSUPP; |
1228 | ||
5955102c | 1229 | inode_lock(inode); |
3375f696 | 1230 | |
587c0a42 TY |
1231 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1232 | if (offset >= inode->i_size) | |
1233 | goto out; | |
1234 | ||
a66c7b2f | 1235 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1236 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1237 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1238 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1239 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1240 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1241 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1242 | } else { |
fbfa2cc5 | 1243 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1244 | } |
fbfa2cc5 | 1245 | |
3af60a49 NJ |
1246 | if (!ret) { |
1247 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
1248 | mark_inode_dirty(inode); | |
d0239e1b | 1249 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1250 | } |
3375f696 | 1251 | |
587c0a42 | 1252 | out: |
5955102c | 1253 | inode_unlock(inode); |
3375f696 | 1254 | |
c01e2853 | 1255 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1256 | return ret; |
1257 | } | |
1258 | ||
1e84371f JK |
1259 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1260 | { | |
de5307e4 JK |
1261 | /* |
1262 | * f2fs_relase_file is called at every close calls. So we should | |
1263 | * not drop any inmemory pages by close called by other process. | |
1264 | */ | |
1265 | if (!(filp->f_mode & FMODE_WRITE) || | |
1266 | atomic_read(&inode->i_writecount) != 1) | |
1267 | return 0; | |
1268 | ||
1e84371f JK |
1269 | /* some remained atomic pages should discarded */ |
1270 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1271 | drop_inmem_pages(inode); |
1e84371f | 1272 | if (f2fs_is_volatile_file(inode)) { |
26dc3d44 | 1273 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
1e84371f JK |
1274 | set_inode_flag(F2FS_I(inode), FI_DROP_CACHE); |
1275 | filemap_fdatawrite(inode->i_mapping); | |
1276 | clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE); | |
1277 | } | |
1278 | return 0; | |
1279 | } | |
1280 | ||
fbfa2cc5 JK |
1281 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1282 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1283 | ||
1284 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1285 | { | |
1286 | if (S_ISDIR(mode)) | |
1287 | return flags; | |
1288 | else if (S_ISREG(mode)) | |
1289 | return flags & F2FS_REG_FLMASK; | |
1290 | else | |
1291 | return flags & F2FS_OTHER_FLMASK; | |
1292 | } | |
1293 | ||
52656e6c | 1294 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1295 | { |
6131ffaa | 1296 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1297 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1298 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1299 | return put_user(flags, (int __user *)arg); | |
1300 | } | |
fbfa2cc5 | 1301 | |
52656e6c JK |
1302 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1303 | { | |
1304 | struct inode *inode = file_inode(filp); | |
1305 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1306 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
1307 | unsigned int oldflags; | |
1308 | int ret; | |
fbfa2cc5 | 1309 | |
52656e6c JK |
1310 | ret = mnt_want_write_file(filp); |
1311 | if (ret) | |
1312 | return ret; | |
fbfa2cc5 | 1313 | |
52656e6c JK |
1314 | if (!inode_owner_or_capable(inode)) { |
1315 | ret = -EACCES; | |
1316 | goto out; | |
1317 | } | |
fbfa2cc5 | 1318 | |
52656e6c JK |
1319 | if (get_user(flags, (int __user *)arg)) { |
1320 | ret = -EFAULT; | |
1321 | goto out; | |
1322 | } | |
fbfa2cc5 | 1323 | |
52656e6c | 1324 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1325 | |
5955102c | 1326 | inode_lock(inode); |
fbfa2cc5 | 1327 | |
52656e6c | 1328 | oldflags = fi->i_flags; |
fbfa2cc5 | 1329 | |
52656e6c JK |
1330 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1331 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1332 | inode_unlock(inode); |
52656e6c JK |
1333 | ret = -EPERM; |
1334 | goto out; | |
fbfa2cc5 | 1335 | } |
52656e6c | 1336 | } |
fbfa2cc5 | 1337 | |
52656e6c JK |
1338 | flags = flags & FS_FL_USER_MODIFIABLE; |
1339 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1340 | fi->i_flags = flags; | |
5955102c | 1341 | inode_unlock(inode); |
fbfa2cc5 | 1342 | |
52656e6c JK |
1343 | f2fs_set_inode_flags(inode); |
1344 | inode->i_ctime = CURRENT_TIME; | |
1345 | mark_inode_dirty(inode); | |
fbfa2cc5 | 1346 | out: |
52656e6c JK |
1347 | mnt_drop_write_file(filp); |
1348 | return ret; | |
1349 | } | |
4b2fecc8 | 1350 | |
d49f3e89 CY |
1351 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1352 | { | |
1353 | struct inode *inode = file_inode(filp); | |
1354 | ||
1355 | return put_user(inode->i_generation, (int __user *)arg); | |
1356 | } | |
1357 | ||
88b88a66 JK |
1358 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1359 | { | |
1360 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1361 | int ret; |
88b88a66 JK |
1362 | |
1363 | if (!inode_owner_or_capable(inode)) | |
1364 | return -EACCES; | |
1365 | ||
1e84371f JK |
1366 | if (f2fs_is_atomic_file(inode)) |
1367 | return 0; | |
88b88a66 | 1368 | |
f4c9c743 CY |
1369 | ret = f2fs_convert_inline_inode(inode); |
1370 | if (ret) | |
1371 | return ret; | |
88b88a66 | 1372 | |
f4c9c743 | 1373 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
d0239e1b JK |
1374 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1375 | ||
c27753d6 JK |
1376 | if (!get_dirty_pages(inode)) |
1377 | return 0; | |
1378 | ||
1379 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
1380 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", | |
1381 | inode->i_ino, get_dirty_pages(inode)); | |
1382 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
1383 | if (ret) | |
1384 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
1385 | return ret; | |
88b88a66 JK |
1386 | } |
1387 | ||
1388 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1389 | { | |
1390 | struct inode *inode = file_inode(filp); | |
1391 | int ret; | |
1392 | ||
1393 | if (!inode_owner_or_capable(inode)) | |
1394 | return -EACCES; | |
1395 | ||
02a1335f JK |
1396 | if (f2fs_is_volatile_file(inode)) |
1397 | return 0; | |
1398 | ||
88b88a66 JK |
1399 | ret = mnt_want_write_file(filp); |
1400 | if (ret) | |
1401 | return ret; | |
1402 | ||
6282adbf JK |
1403 | if (f2fs_is_atomic_file(inode)) { |
1404 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
29b96b54 | 1405 | ret = commit_inmem_pages(inode); |
447135a8 JK |
1406 | if (ret) { |
1407 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
edb27dee | 1408 | goto err_out; |
447135a8 | 1409 | } |
6282adbf | 1410 | } |
88b88a66 | 1411 | |
608514de | 1412 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
edb27dee | 1413 | err_out: |
88b88a66 JK |
1414 | mnt_drop_write_file(filp); |
1415 | return ret; | |
1416 | } | |
1417 | ||
02a1335f JK |
1418 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1419 | { | |
1420 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1421 | int ret; |
02a1335f JK |
1422 | |
1423 | if (!inode_owner_or_capable(inode)) | |
1424 | return -EACCES; | |
1425 | ||
1e84371f JK |
1426 | if (f2fs_is_volatile_file(inode)) |
1427 | return 0; | |
1428 | ||
f4c9c743 CY |
1429 | ret = f2fs_convert_inline_inode(inode); |
1430 | if (ret) | |
1431 | return ret; | |
b3d208f9 | 1432 | |
f4c9c743 | 1433 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
d0239e1b | 1434 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
f4c9c743 | 1435 | return 0; |
02a1335f JK |
1436 | } |
1437 | ||
1e84371f JK |
1438 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1439 | { | |
1440 | struct inode *inode = file_inode(filp); | |
1441 | ||
1442 | if (!inode_owner_or_capable(inode)) | |
1443 | return -EACCES; | |
1444 | ||
1445 | if (!f2fs_is_volatile_file(inode)) | |
1446 | return 0; | |
1447 | ||
3c6c2beb JK |
1448 | if (!f2fs_is_first_block_written(inode)) |
1449 | return truncate_partial_data_page(inode, 0, true); | |
1450 | ||
538e17e7 | 1451 | return punch_hole(inode, 0, F2FS_BLKSIZE); |
1e84371f JK |
1452 | } |
1453 | ||
1454 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1455 | { | |
1456 | struct inode *inode = file_inode(filp); | |
1457 | int ret; | |
1458 | ||
1459 | if (!inode_owner_or_capable(inode)) | |
1460 | return -EACCES; | |
1461 | ||
1462 | ret = mnt_want_write_file(filp); | |
1463 | if (ret) | |
1464 | return ret; | |
1465 | ||
26dc3d44 | 1466 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1467 | drop_inmem_pages(inode); |
732d5648 JK |
1468 | if (f2fs_is_volatile_file(inode)) { |
1469 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); | |
608514de | 1470 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1471 | } |
de6a8ec9 | 1472 | |
1e84371f | 1473 | mnt_drop_write_file(filp); |
d0239e1b | 1474 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1475 | return ret; |
1476 | } | |
1477 | ||
1abff93d JK |
1478 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1479 | { | |
1480 | struct inode *inode = file_inode(filp); | |
1481 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1482 | struct super_block *sb = sbi->sb; | |
1483 | __u32 in; | |
1484 | ||
1485 | if (!capable(CAP_SYS_ADMIN)) | |
1486 | return -EPERM; | |
1487 | ||
1488 | if (get_user(in, (__u32 __user *)arg)) | |
1489 | return -EFAULT; | |
1490 | ||
1491 | switch (in) { | |
1492 | case F2FS_GOING_DOWN_FULLSYNC: | |
1493 | sb = freeze_bdev(sb->s_bdev); | |
1494 | if (sb && !IS_ERR(sb)) { | |
1495 | f2fs_stop_checkpoint(sbi); | |
1496 | thaw_bdev(sb->s_bdev, sb); | |
1497 | } | |
1498 | break; | |
1499 | case F2FS_GOING_DOWN_METASYNC: | |
1500 | /* do checkpoint only */ | |
1501 | f2fs_sync_fs(sb, 1); | |
1502 | f2fs_stop_checkpoint(sbi); | |
1503 | break; | |
1504 | case F2FS_GOING_DOWN_NOSYNC: | |
1505 | f2fs_stop_checkpoint(sbi); | |
1506 | break; | |
c912a829 JK |
1507 | case F2FS_GOING_DOWN_METAFLUSH: |
1508 | sync_meta_pages(sbi, META, LONG_MAX); | |
1509 | f2fs_stop_checkpoint(sbi); | |
1510 | break; | |
1abff93d JK |
1511 | default: |
1512 | return -EINVAL; | |
1513 | } | |
d0239e1b | 1514 | f2fs_update_time(sbi, REQ_TIME); |
1abff93d JK |
1515 | return 0; |
1516 | } | |
1517 | ||
52656e6c JK |
1518 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1519 | { | |
1520 | struct inode *inode = file_inode(filp); | |
1521 | struct super_block *sb = inode->i_sb; | |
1522 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1523 | struct fstrim_range range; | |
1524 | int ret; | |
4b2fecc8 | 1525 | |
52656e6c JK |
1526 | if (!capable(CAP_SYS_ADMIN)) |
1527 | return -EPERM; | |
4b2fecc8 | 1528 | |
52656e6c JK |
1529 | if (!blk_queue_discard(q)) |
1530 | return -EOPNOTSUPP; | |
4b2fecc8 | 1531 | |
52656e6c JK |
1532 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1533 | sizeof(range))) | |
1534 | return -EFAULT; | |
4b2fecc8 | 1535 | |
52656e6c JK |
1536 | range.minlen = max((unsigned int)range.minlen, |
1537 | q->limits.discard_granularity); | |
1538 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
1539 | if (ret < 0) | |
1540 | return ret; | |
4b2fecc8 | 1541 | |
52656e6c JK |
1542 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1543 | sizeof(range))) | |
1544 | return -EFAULT; | |
d0239e1b | 1545 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1546 | return 0; |
1547 | } | |
1548 | ||
f424f664 JK |
1549 | static bool uuid_is_nonzero(__u8 u[16]) |
1550 | { | |
1551 | int i; | |
1552 | ||
1553 | for (i = 0; i < 16; i++) | |
1554 | if (u[i]) | |
1555 | return true; | |
1556 | return false; | |
1557 | } | |
1558 | ||
1559 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1560 | { | |
0b81d077 | 1561 | struct fscrypt_policy policy; |
f424f664 JK |
1562 | struct inode *inode = file_inode(filp); |
1563 | ||
0b81d077 JK |
1564 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
1565 | sizeof(policy))) | |
f424f664 JK |
1566 | return -EFAULT; |
1567 | ||
d0239e1b | 1568 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
0b81d077 | 1569 | return fscrypt_process_policy(inode, &policy); |
f424f664 JK |
1570 | } |
1571 | ||
1572 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1573 | { | |
0b81d077 | 1574 | struct fscrypt_policy policy; |
f424f664 JK |
1575 | struct inode *inode = file_inode(filp); |
1576 | int err; | |
1577 | ||
0b81d077 | 1578 | err = fscrypt_get_policy(inode, &policy); |
f424f664 JK |
1579 | if (err) |
1580 | return err; | |
1581 | ||
0b81d077 | 1582 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
f424f664 JK |
1583 | return -EFAULT; |
1584 | return 0; | |
f424f664 JK |
1585 | } |
1586 | ||
1587 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1588 | { | |
1589 | struct inode *inode = file_inode(filp); | |
1590 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1591 | int err; | |
1592 | ||
1593 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1594 | return -EOPNOTSUPP; | |
1595 | ||
1596 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1597 | goto got_it; | |
1598 | ||
1599 | err = mnt_want_write_file(filp); | |
1600 | if (err) | |
1601 | return err; | |
1602 | ||
1603 | /* update superblock with uuid */ | |
1604 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1605 | ||
c5bda1c8 | 1606 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1607 | if (err) { |
1608 | /* undo new data */ | |
1609 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1610 | mnt_drop_write_file(filp); |
f424f664 JK |
1611 | return err; |
1612 | } | |
e8240f65 | 1613 | mnt_drop_write_file(filp); |
f424f664 JK |
1614 | got_it: |
1615 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1616 | 16)) | |
1617 | return -EFAULT; | |
1618 | return 0; | |
1619 | } | |
1620 | ||
c1c1b583 CY |
1621 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1622 | { | |
1623 | struct inode *inode = file_inode(filp); | |
1624 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1625 | __u32 sync; |
c1c1b583 CY |
1626 | |
1627 | if (!capable(CAP_SYS_ADMIN)) | |
1628 | return -EPERM; | |
1629 | ||
d530d4d8 | 1630 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1631 | return -EFAULT; |
1632 | ||
d530d4d8 CY |
1633 | if (f2fs_readonly(sbi->sb)) |
1634 | return -EROFS; | |
c1c1b583 | 1635 | |
d530d4d8 | 1636 | if (!sync) { |
c1c1b583 | 1637 | if (!mutex_trylock(&sbi->gc_mutex)) |
d530d4d8 CY |
1638 | return -EBUSY; |
1639 | } else { | |
1640 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1641 | } |
1642 | ||
d530d4d8 | 1643 | return f2fs_gc(sbi, sync); |
c1c1b583 CY |
1644 | } |
1645 | ||
456b88e4 CY |
1646 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1647 | { | |
1648 | struct inode *inode = file_inode(filp); | |
1649 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
456b88e4 CY |
1650 | |
1651 | if (!capable(CAP_SYS_ADMIN)) | |
1652 | return -EPERM; | |
1653 | ||
1654 | if (f2fs_readonly(sbi->sb)) | |
1655 | return -EROFS; | |
1656 | ||
e96248bb | 1657 | return f2fs_sync_fs(sbi->sb, 1); |
456b88e4 CY |
1658 | } |
1659 | ||
d323d005 CY |
1660 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1661 | struct file *filp, | |
1662 | struct f2fs_defragment *range) | |
1663 | { | |
1664 | struct inode *inode = file_inode(filp); | |
da85985c | 1665 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
d323d005 CY |
1666 | struct extent_info ei; |
1667 | pgoff_t pg_start, pg_end; | |
3519e3f9 | 1668 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1669 | unsigned int total = 0, sec_num; |
3519e3f9 | 1670 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
d323d005 CY |
1671 | block_t blk_end = 0; |
1672 | bool fragmented = false; | |
1673 | int err; | |
1674 | ||
1675 | /* if in-place-update policy is enabled, don't waste time here */ | |
1676 | if (need_inplace_update(inode)) | |
1677 | return -EINVAL; | |
1678 | ||
09cbfeaf KS |
1679 | pg_start = range->start >> PAGE_SHIFT; |
1680 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 1681 | |
2c4db1a6 | 1682 | f2fs_balance_fs(sbi, true); |
d323d005 | 1683 | |
5955102c | 1684 | inode_lock(inode); |
d323d005 CY |
1685 | |
1686 | /* writeback all dirty pages in the range */ | |
1687 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1688 | range->start + range->len - 1); |
d323d005 CY |
1689 | if (err) |
1690 | goto out; | |
1691 | ||
1692 | /* | |
1693 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1694 | * block addresses are continuous. | |
1695 | */ | |
1696 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1697 | if (ei.fofs + ei.len >= pg_end) | |
1698 | goto out; | |
1699 | } | |
1700 | ||
1701 | map.m_lblk = pg_start; | |
d323d005 CY |
1702 | |
1703 | /* | |
1704 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1705 | * physical block addresses are continuous even if there are hole(s) | |
1706 | * in logical blocks. | |
1707 | */ | |
1708 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1709 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1710 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1711 | if (err) | |
1712 | goto out; | |
1713 | ||
1714 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1715 | map.m_lblk++; | |
d323d005 CY |
1716 | continue; |
1717 | } | |
1718 | ||
1719 | if (blk_end && blk_end != map.m_pblk) { | |
1720 | fragmented = true; | |
1721 | break; | |
1722 | } | |
1723 | blk_end = map.m_pblk + map.m_len; | |
1724 | ||
1725 | map.m_lblk += map.m_len; | |
d323d005 CY |
1726 | } |
1727 | ||
1728 | if (!fragmented) | |
1729 | goto out; | |
1730 | ||
1731 | map.m_lblk = pg_start; | |
1732 | map.m_len = pg_end - pg_start; | |
1733 | ||
1734 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; | |
1735 | ||
1736 | /* | |
1737 | * make sure there are enough free section for LFS allocation, this can | |
1738 | * avoid defragment running in SSR mode when free section are allocated | |
1739 | * intensively | |
1740 | */ | |
1741 | if (has_not_enough_free_secs(sbi, sec_num)) { | |
1742 | err = -EAGAIN; | |
1743 | goto out; | |
1744 | } | |
1745 | ||
1746 | while (map.m_lblk < pg_end) { | |
1747 | pgoff_t idx; | |
1748 | int cnt = 0; | |
1749 | ||
1750 | do_map: | |
a1c1e9b7 | 1751 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1752 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1753 | if (err) | |
1754 | goto clear_out; | |
1755 | ||
1756 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1757 | map.m_lblk++; | |
1758 | continue; | |
1759 | } | |
1760 | ||
1761 | set_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); | |
1762 | ||
1763 | idx = map.m_lblk; | |
1764 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
1765 | struct page *page; | |
1766 | ||
1767 | page = get_lock_data_page(inode, idx, true); | |
1768 | if (IS_ERR(page)) { | |
1769 | err = PTR_ERR(page); | |
1770 | goto clear_out; | |
1771 | } | |
1772 | ||
1773 | set_page_dirty(page); | |
1774 | f2fs_put_page(page, 1); | |
1775 | ||
1776 | idx++; | |
1777 | cnt++; | |
1778 | total++; | |
1779 | } | |
1780 | ||
1781 | map.m_lblk = idx; | |
d323d005 CY |
1782 | |
1783 | if (idx < pg_end && cnt < blk_per_seg) | |
1784 | goto do_map; | |
1785 | ||
1786 | clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); | |
1787 | ||
1788 | err = filemap_fdatawrite(inode->i_mapping); | |
1789 | if (err) | |
1790 | goto out; | |
1791 | } | |
1792 | clear_out: | |
1793 | clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); | |
1794 | out: | |
5955102c | 1795 | inode_unlock(inode); |
d323d005 | 1796 | if (!err) |
09cbfeaf | 1797 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
1798 | return err; |
1799 | } | |
1800 | ||
1801 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
1802 | { | |
1803 | struct inode *inode = file_inode(filp); | |
1804 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1805 | struct f2fs_defragment range; | |
1806 | int err; | |
1807 | ||
1808 | if (!capable(CAP_SYS_ADMIN)) | |
1809 | return -EPERM; | |
1810 | ||
1811 | if (!S_ISREG(inode->i_mode)) | |
1812 | return -EINVAL; | |
1813 | ||
1814 | err = mnt_want_write_file(filp); | |
1815 | if (err) | |
1816 | return err; | |
1817 | ||
1818 | if (f2fs_readonly(sbi->sb)) { | |
1819 | err = -EROFS; | |
1820 | goto out; | |
1821 | } | |
1822 | ||
1823 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
1824 | sizeof(range))) { | |
1825 | err = -EFAULT; | |
1826 | goto out; | |
1827 | } | |
1828 | ||
1829 | /* verify alignment of offset & size */ | |
1830 | if (range.start & (F2FS_BLKSIZE - 1) || | |
1831 | range.len & (F2FS_BLKSIZE - 1)) { | |
1832 | err = -EINVAL; | |
1833 | goto out; | |
1834 | } | |
1835 | ||
1836 | err = f2fs_defragment_range(sbi, filp, &range); | |
d0239e1b | 1837 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 CY |
1838 | if (err < 0) |
1839 | goto out; | |
1840 | ||
1841 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
1842 | sizeof(range))) | |
1843 | err = -EFAULT; | |
1844 | out: | |
1845 | mnt_drop_write_file(filp); | |
1846 | return err; | |
1847 | } | |
1848 | ||
52656e6c JK |
1849 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
1850 | { | |
1851 | switch (cmd) { | |
1852 | case F2FS_IOC_GETFLAGS: | |
1853 | return f2fs_ioc_getflags(filp, arg); | |
1854 | case F2FS_IOC_SETFLAGS: | |
1855 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
1856 | case F2FS_IOC_GETVERSION: |
1857 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
1858 | case F2FS_IOC_START_ATOMIC_WRITE: |
1859 | return f2fs_ioc_start_atomic_write(filp); | |
1860 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1861 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
1862 | case F2FS_IOC_START_VOLATILE_WRITE: |
1863 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
1864 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
1865 | return f2fs_ioc_release_volatile_write(filp); | |
1866 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
1867 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
1868 | case F2FS_IOC_SHUTDOWN: |
1869 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
1870 | case FITRIM: |
1871 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
1872 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
1873 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
1874 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
1875 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
1876 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
1877 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
1878 | case F2FS_IOC_GARBAGE_COLLECT: |
1879 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
1880 | case F2FS_IOC_WRITE_CHECKPOINT: |
1881 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
1882 | case F2FS_IOC_DEFRAGMENT: |
1883 | return f2fs_ioc_defragment(filp, arg); | |
fbfa2cc5 JK |
1884 | default: |
1885 | return -ENOTTY; | |
1886 | } | |
1887 | } | |
1888 | ||
fcc85a4d JK |
1889 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
1890 | { | |
b439b103 JK |
1891 | struct file *file = iocb->ki_filp; |
1892 | struct inode *inode = file_inode(file); | |
1893 | ssize_t ret; | |
fcc85a4d JK |
1894 | |
1895 | if (f2fs_encrypted_inode(inode) && | |
0b81d077 JK |
1896 | !fscrypt_has_encryption_key(inode) && |
1897 | fscrypt_get_encryption_info(inode)) | |
fcc85a4d JK |
1898 | return -EACCES; |
1899 | ||
b439b103 JK |
1900 | inode_lock(inode); |
1901 | ret = generic_write_checks(iocb, from); | |
1902 | if (ret > 0) { | |
1903 | ret = f2fs_preallocate_blocks(iocb, from); | |
1904 | if (!ret) | |
1905 | ret = __generic_file_write_iter(iocb, from); | |
1906 | } | |
1907 | inode_unlock(inode); | |
1908 | ||
1909 | if (ret > 0) { | |
1910 | ssize_t err; | |
1911 | ||
1912 | err = generic_write_sync(file, iocb->ki_pos - ret, ret); | |
1913 | if (err < 0) | |
1914 | ret = err; | |
1915 | } | |
1916 | return ret; | |
fcc85a4d JK |
1917 | } |
1918 | ||
e9750824 NJ |
1919 | #ifdef CONFIG_COMPAT |
1920 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1921 | { | |
1922 | switch (cmd) { | |
1923 | case F2FS_IOC32_GETFLAGS: | |
1924 | cmd = F2FS_IOC_GETFLAGS; | |
1925 | break; | |
1926 | case F2FS_IOC32_SETFLAGS: | |
1927 | cmd = F2FS_IOC_SETFLAGS; | |
1928 | break; | |
04ef4b62 CY |
1929 | case F2FS_IOC32_GETVERSION: |
1930 | cmd = F2FS_IOC_GETVERSION; | |
1931 | break; | |
1932 | case F2FS_IOC_START_ATOMIC_WRITE: | |
1933 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1934 | case F2FS_IOC_START_VOLATILE_WRITE: | |
1935 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
1936 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
1937 | case F2FS_IOC_SHUTDOWN: | |
1938 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
1939 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
1940 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
1941 | case F2FS_IOC_GARBAGE_COLLECT: | |
1942 | case F2FS_IOC_WRITE_CHECKPOINT: | |
1943 | case F2FS_IOC_DEFRAGMENT: | |
1944 | break; | |
e9750824 NJ |
1945 | default: |
1946 | return -ENOIOCTLCMD; | |
1947 | } | |
1948 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
1949 | } | |
1950 | #endif | |
1951 | ||
fbfa2cc5 | 1952 | const struct file_operations f2fs_file_operations = { |
267378d4 | 1953 | .llseek = f2fs_llseek, |
aad4f8bb | 1954 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
1955 | .write_iter = f2fs_file_write_iter, |
1956 | .open = f2fs_file_open, | |
12662234 | 1957 | .release = f2fs_release_file, |
fbfa2cc5 JK |
1958 | .mmap = f2fs_file_mmap, |
1959 | .fsync = f2fs_sync_file, | |
1960 | .fallocate = f2fs_fallocate, | |
1961 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
1962 | #ifdef CONFIG_COMPAT |
1963 | .compat_ioctl = f2fs_compat_ioctl, | |
1964 | #endif | |
fbfa2cc5 | 1965 | .splice_read = generic_file_splice_read, |
8d020765 | 1966 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 1967 | }; |