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Commit | Line | Data |
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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> |
dc91de78 | 23 | #include <linux/uio.h> |
8da4b8c4 | 24 | #include <linux/uuid.h> |
4dd6f977 | 25 | #include <linux/file.h> |
fbfa2cc5 JK |
26 | |
27 | #include "f2fs.h" | |
28 | #include "node.h" | |
29 | #include "segment.h" | |
30 | #include "xattr.h" | |
31 | #include "acl.h" | |
c1c1b583 | 32 | #include "gc.h" |
db9f7c1a | 33 | #include "trace.h" |
a2a4a7e4 | 34 | #include <trace/events/f2fs.h> |
fbfa2cc5 | 35 | |
5a3a2d83 QS |
36 | static int f2fs_filemap_fault(struct vm_fault *vmf) |
37 | { | |
38 | struct inode *inode = file_inode(vmf->vma->vm_file); | |
39 | int err; | |
40 | ||
41 | down_read(&F2FS_I(inode)->i_mmap_sem); | |
42 | err = filemap_fault(vmf); | |
43 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
44 | ||
45 | return err; | |
46 | } | |
47 | ||
11bac800 | 48 | static int f2fs_vm_page_mkwrite(struct vm_fault *vmf) |
fbfa2cc5 JK |
49 | { |
50 | struct page *page = vmf->page; | |
11bac800 | 51 | struct inode *inode = file_inode(vmf->vma->vm_file); |
4081363f | 52 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 53 | struct dnode_of_data dn; |
e479556b | 54 | int err; |
fbfa2cc5 | 55 | |
fbfa2cc5 | 56 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
57 | |
58 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 59 | |
fbfa2cc5 | 60 | /* block allocation */ |
e479556b | 61 | f2fs_lock_op(sbi); |
b3d208f9 | 62 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 63 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
64 | if (err) { |
65 | f2fs_unlock_op(sbi); | |
b600965c | 66 | goto out; |
9ba69cf9 JK |
67 | } |
68 | f2fs_put_dnode(&dn); | |
69 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 70 | |
2c4db1a6 | 71 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 72 | |
11bac800 | 73 | file_update_time(vmf->vma->vm_file); |
5a3a2d83 | 74 | down_read(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 | 75 | lock_page(page); |
6bacf52f | 76 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 77 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 78 | !PageUptodate(page))) { |
fbfa2cc5 JK |
79 | unlock_page(page); |
80 | err = -EFAULT; | |
5a3a2d83 | 81 | goto out_sem; |
fbfa2cc5 JK |
82 | } |
83 | ||
84 | /* | |
85 | * check to see if the page is mapped already (no holes) | |
86 | */ | |
87 | if (PageMappedToDisk(page)) | |
9851e6e1 | 88 | goto mapped; |
fbfa2cc5 JK |
89 | |
90 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 91 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 92 | i_size_read(inode)) { |
fbfa2cc5 | 93 | unsigned offset; |
09cbfeaf KS |
94 | offset = i_size_read(inode) & ~PAGE_MASK; |
95 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
96 | } |
97 | set_page_dirty(page); | |
237c0790 JK |
98 | if (!PageUptodate(page)) |
99 | SetPageUptodate(page); | |
fbfa2cc5 | 100 | |
e943a10d | 101 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
102 | mapped: |
103 | /* fill the page */ | |
fec1d657 | 104 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
105 | |
106 | /* wait for GCed encrypted page writeback */ | |
107 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) | |
108 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); | |
109 | ||
5a3a2d83 QS |
110 | out_sem: |
111 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
fbfa2cc5 JK |
112 | out: |
113 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 114 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 JK |
115 | return block_page_mkwrite_return(err); |
116 | } | |
117 | ||
118 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
5a3a2d83 | 119 | .fault = f2fs_filemap_fault, |
f1820361 | 120 | .map_pages = filemap_map_pages, |
692bb55d | 121 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
122 | }; |
123 | ||
354a3399 JK |
124 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
125 | { | |
126 | struct dentry *dentry; | |
127 | ||
128 | inode = igrab(inode); | |
129 | dentry = d_find_any_alias(inode); | |
130 | iput(inode); | |
131 | if (!dentry) | |
132 | return 0; | |
133 | ||
f0947e5c JK |
134 | *pino = parent_ino(dentry); |
135 | dput(dentry); | |
354a3399 JK |
136 | return 1; |
137 | } | |
138 | ||
9d1589ef CY |
139 | static inline bool need_do_checkpoint(struct inode *inode) |
140 | { | |
4081363f | 141 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
142 | bool need_cp = false; |
143 | ||
144 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
145 | need_cp = true; | |
bbf156f7 | 146 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
e7d55452 | 147 | need_cp = true; |
9d1589ef CY |
148 | else if (file_wrong_pino(inode)) |
149 | need_cp = true; | |
150 | else if (!space_for_roll_forward(sbi)) | |
151 | need_cp = true; | |
152 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
153 | need_cp = true; | |
d5053a34 JK |
154 | else if (test_opt(sbi, FASTBOOT)) |
155 | need_cp = true; | |
a344b9fd JK |
156 | else if (sbi->active_logs == 2) |
157 | need_cp = true; | |
9d1589ef CY |
158 | |
159 | return need_cp; | |
160 | } | |
161 | ||
9c7bb702 CL |
162 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
163 | { | |
164 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
165 | bool ret = false; | |
166 | /* But we need to avoid that there are some inode updates */ | |
167 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
168 | ret = true; | |
169 | f2fs_put_page(i, 0); | |
170 | return ret; | |
171 | } | |
172 | ||
51455b19 CL |
173 | static void try_to_fix_pino(struct inode *inode) |
174 | { | |
175 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
176 | nid_t pino; | |
177 | ||
178 | down_write(&fi->i_sem); | |
51455b19 CL |
179 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
180 | get_parent_ino(inode, &pino)) { | |
205b9822 | 181 | f2fs_i_pino_write(inode, pino); |
51455b19 | 182 | file_got_pino(inode); |
51455b19 | 183 | } |
ee6d182f | 184 | up_write(&fi->i_sem); |
51455b19 CL |
185 | } |
186 | ||
608514de JK |
187 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
188 | int datasync, bool atomic) | |
fbfa2cc5 JK |
189 | { |
190 | struct inode *inode = file->f_mapping->host; | |
4081363f | 191 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 192 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
193 | int ret = 0; |
194 | bool need_cp = false; | |
195 | struct writeback_control wbc = { | |
c81bf1c8 | 196 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
197 | .nr_to_write = LONG_MAX, |
198 | .for_reclaim = 0, | |
199 | }; | |
200 | ||
6bacf52f | 201 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
202 | return 0; |
203 | ||
a2a4a7e4 | 204 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
205 | |
206 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 207 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 208 | set_inode_flag(inode, FI_NEED_IPU); |
fbfa2cc5 | 209 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
91942321 | 210 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 211 | |
a2a4a7e4 NJ |
212 | if (ret) { |
213 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 214 | return ret; |
a2a4a7e4 | 215 | } |
fbfa2cc5 | 216 | |
9c7bb702 | 217 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 218 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 219 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
220 | goto go_write; |
221 | } | |
222 | ||
6d99ba41 JK |
223 | /* |
224 | * if there is no written data, don't waste time to write recovery info. | |
225 | */ | |
91942321 | 226 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 227 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 228 | |
9c7bb702 CL |
229 | /* it may call write_inode just prior to fsync */ |
230 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 231 | goto go_write; |
19c9c466 | 232 | |
91942321 | 233 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 234 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
235 | goto flush_out; |
236 | goto out; | |
237 | } | |
19c9c466 | 238 | go_write: |
e5d2385e JK |
239 | /* |
240 | * Both of fdatasync() and fsync() are able to be recovered from | |
241 | * sudden-power-off. | |
242 | */ | |
91942321 | 243 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 244 | need_cp = need_do_checkpoint(inode); |
91942321 | 245 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 246 | |
fbfa2cc5 JK |
247 | if (need_cp) { |
248 | /* all the dirty node pages should be flushed for POR */ | |
249 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 250 | |
51455b19 CL |
251 | /* |
252 | * We've secured consistency through sync_fs. Following pino | |
253 | * will be used only for fsynced inodes after checkpoint. | |
254 | */ | |
255 | try_to_fix_pino(inode); | |
91942321 JK |
256 | clear_inode_flag(inode, FI_APPEND_WRITE); |
257 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
258 | goto out; |
259 | } | |
88bd02c9 | 260 | sync_nodes: |
26de9b11 | 261 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
262 | if (ret) |
263 | goto out; | |
51455b19 | 264 | |
871f599f | 265 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
266 | if (unlikely(f2fs_cp_error(sbi))) { |
267 | ret = -EIO; | |
871f599f | 268 | goto out; |
6d5a1495 | 269 | } |
871f599f | 270 | |
51455b19 | 271 | if (need_inode_block_update(sbi, ino)) { |
7c45729a | 272 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
273 | f2fs_write_inode(inode, NULL); |
274 | goto sync_nodes; | |
fbfa2cc5 | 275 | } |
51455b19 CL |
276 | |
277 | ret = wait_on_node_pages_writeback(sbi, ino); | |
278 | if (ret) | |
279 | goto out; | |
280 | ||
281 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 282 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 283 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 284 | flush_out: |
a49324f1 | 285 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 286 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
e7c75ab0 JK |
287 | if (!atomic) |
288 | ret = f2fs_issue_flush(sbi); | |
d0239e1b | 289 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 290 | out: |
a2a4a7e4 | 291 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 292 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
293 | return ret; |
294 | } | |
295 | ||
608514de JK |
296 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
297 | { | |
298 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
299 | } | |
300 | ||
7f7670fe JK |
301 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
302 | pgoff_t pgofs, int whence) | |
303 | { | |
304 | struct pagevec pvec; | |
305 | int nr_pages; | |
306 | ||
307 | if (whence != SEEK_DATA) | |
308 | return 0; | |
309 | ||
310 | /* find first dirty page index */ | |
311 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
312 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
313 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 314 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
315 | pagevec_release(&pvec); |
316 | return pgofs; | |
317 | } | |
318 | ||
319 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
320 | int whence) | |
321 | { | |
322 | switch (whence) { | |
323 | case SEEK_DATA: | |
324 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
325 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
326 | return true; | |
327 | break; | |
328 | case SEEK_HOLE: | |
329 | if (blkaddr == NULL_ADDR) | |
330 | return true; | |
331 | break; | |
332 | } | |
333 | return false; | |
334 | } | |
335 | ||
267378d4 CY |
336 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
337 | { | |
338 | struct inode *inode = file->f_mapping->host; | |
339 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
340 | struct dnode_of_data dn; | |
7f7670fe JK |
341 | pgoff_t pgofs, end_offset, dirty; |
342 | loff_t data_ofs = offset; | |
343 | loff_t isize; | |
267378d4 CY |
344 | int err = 0; |
345 | ||
5955102c | 346 | inode_lock(inode); |
267378d4 CY |
347 | |
348 | isize = i_size_read(inode); | |
349 | if (offset >= isize) | |
350 | goto fail; | |
351 | ||
352 | /* handle inline data case */ | |
622f28ae | 353 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
354 | if (whence == SEEK_HOLE) |
355 | data_ofs = isize; | |
356 | goto found; | |
357 | } | |
358 | ||
09cbfeaf | 359 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 360 | |
7f7670fe JK |
361 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
362 | ||
09cbfeaf | 363 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 364 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 365 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
366 | if (err && err != -ENOENT) { |
367 | goto fail; | |
368 | } else if (err == -ENOENT) { | |
e1c42045 | 369 | /* direct node does not exists */ |
267378d4 | 370 | if (whence == SEEK_DATA) { |
3cf45747 | 371 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
372 | continue; |
373 | } else { | |
374 | goto found; | |
375 | } | |
376 | } | |
377 | ||
81ca7350 | 378 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
379 | |
380 | /* find data/hole in dnode block */ | |
381 | for (; dn.ofs_in_node < end_offset; | |
382 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 383 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
384 | block_t blkaddr; |
385 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
386 | ||
7f7670fe | 387 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
388 | f2fs_put_dnode(&dn); |
389 | goto found; | |
390 | } | |
391 | } | |
392 | f2fs_put_dnode(&dn); | |
393 | } | |
394 | ||
395 | if (whence == SEEK_DATA) | |
396 | goto fail; | |
267378d4 | 397 | found: |
fe369bc8 JK |
398 | if (whence == SEEK_HOLE && data_ofs > isize) |
399 | data_ofs = isize; | |
5955102c | 400 | inode_unlock(inode); |
267378d4 CY |
401 | return vfs_setpos(file, data_ofs, maxbytes); |
402 | fail: | |
5955102c | 403 | inode_unlock(inode); |
267378d4 CY |
404 | return -ENXIO; |
405 | } | |
406 | ||
407 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
408 | { | |
409 | struct inode *inode = file->f_mapping->host; | |
410 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
411 | ||
412 | switch (whence) { | |
413 | case SEEK_SET: | |
414 | case SEEK_CUR: | |
415 | case SEEK_END: | |
416 | return generic_file_llseek_size(file, offset, whence, | |
417 | maxbytes, i_size_read(inode)); | |
418 | case SEEK_DATA: | |
419 | case SEEK_HOLE: | |
0b4c5afd JK |
420 | if (offset < 0) |
421 | return -ENXIO; | |
267378d4 CY |
422 | return f2fs_seek_block(file, offset, whence); |
423 | } | |
424 | ||
425 | return -EINVAL; | |
426 | } | |
427 | ||
fbfa2cc5 JK |
428 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
429 | { | |
b3d208f9 | 430 | struct inode *inode = file_inode(file); |
b9d777b8 | 431 | int err; |
b3d208f9 JK |
432 | |
433 | /* we don't need to use inline_data strictly */ | |
b9d777b8 JK |
434 | err = f2fs_convert_inline_inode(inode); |
435 | if (err) | |
436 | return err; | |
b3d208f9 | 437 | |
fbfa2cc5 JK |
438 | file_accessed(file); |
439 | vma->vm_ops = &f2fs_file_vm_ops; | |
440 | return 0; | |
441 | } | |
442 | ||
fcc85a4d JK |
443 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
444 | { | |
445 | int ret = generic_file_open(inode, filp); | |
33b13951 | 446 | struct dentry *dir; |
fcc85a4d JK |
447 | |
448 | if (!ret && f2fs_encrypted_inode(inode)) { | |
0b81d077 | 449 | ret = fscrypt_get_encryption_info(inode); |
fcc85a4d | 450 | if (ret) |
ae108668 | 451 | return -EACCES; |
0b81d077 | 452 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 453 | return -ENOKEY; |
fcc85a4d | 454 | } |
33b13951 JK |
455 | dir = dget_parent(file_dentry(filp)); |
456 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
457 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
458 | dput(dir); | |
8074bb51 | 459 | return -EPERM; |
33b13951 JK |
460 | } |
461 | dput(dir); | |
fcc85a4d JK |
462 | return ret; |
463 | } | |
464 | ||
b292dcab | 465 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 466 | { |
4081363f | 467 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 468 | struct f2fs_node *raw_node; |
19b2c30d | 469 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
470 | __le32 *addr; |
471 | ||
45590710 | 472 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
473 | addr = blkaddr_in_node(raw_node) + ofs; |
474 | ||
6c311ec6 | 475 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
476 | block_t blkaddr = le32_to_cpu(*addr); |
477 | if (blkaddr == NULL_ADDR) | |
478 | continue; | |
479 | ||
e1509cf2 | 480 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 481 | set_data_blkaddr(dn); |
fbfa2cc5 | 482 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 483 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 484 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
485 | nr_free++; |
486 | } | |
19b2c30d | 487 | |
fbfa2cc5 | 488 | if (nr_free) { |
19b2c30d CY |
489 | pgoff_t fofs; |
490 | /* | |
491 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
492 | * we will invalidate all blkaddr in the whole range. | |
493 | */ | |
494 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 495 | dn->inode) + ofs; |
19b2c30d | 496 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 497 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
498 | } |
499 | dn->ofs_in_node = ofs; | |
51dd6249 | 500 | |
d0239e1b | 501 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
502 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
503 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
504 | return nr_free; |
505 | } | |
506 | ||
507 | void truncate_data_blocks(struct dnode_of_data *dn) | |
508 | { | |
509 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
510 | } | |
511 | ||
0bfcfcca | 512 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 513 | bool cache_only) |
fbfa2cc5 | 514 | { |
09cbfeaf KS |
515 | unsigned offset = from & (PAGE_SIZE - 1); |
516 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 517 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
518 | struct page *page; |
519 | ||
43f3eae1 | 520 | if (!offset && !cache_only) |
b3d208f9 | 521 | return 0; |
fbfa2cc5 | 522 | |
43f3eae1 | 523 | if (cache_only) { |
34b5d5c2 | 524 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
525 | if (page && PageUptodate(page)) |
526 | goto truncate_out; | |
527 | f2fs_put_page(page, 1); | |
b3d208f9 | 528 | return 0; |
43f3eae1 | 529 | } |
fbfa2cc5 | 530 | |
a56c7c6f | 531 | page = get_lock_data_page(inode, index, true); |
43f3eae1 | 532 | if (IS_ERR(page)) |
a78aaa2c | 533 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 534 | truncate_out: |
fec1d657 | 535 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 536 | zero_user(page, offset, PAGE_SIZE - offset); |
0b81d077 JK |
537 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
538 | !S_ISREG(inode->i_mode)) | |
0bfcfcca | 539 | set_page_dirty(page); |
fbfa2cc5 | 540 | f2fs_put_page(page, 1); |
b3d208f9 | 541 | return 0; |
fbfa2cc5 JK |
542 | } |
543 | ||
764aa3e9 | 544 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 545 | { |
4081363f | 546 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
547 | unsigned int blocksize = inode->i_sb->s_blocksize; |
548 | struct dnode_of_data dn; | |
549 | pgoff_t free_from; | |
9ffe0fb5 | 550 | int count = 0, err = 0; |
b3d208f9 | 551 | struct page *ipage; |
0bfcfcca | 552 | bool truncate_page = false; |
fbfa2cc5 | 553 | |
51dd6249 NJ |
554 | trace_f2fs_truncate_blocks_enter(inode, from); |
555 | ||
f7ef9b83 | 556 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 557 | |
09210c97 CY |
558 | if (free_from >= sbi->max_file_blocks) |
559 | goto free_partial; | |
560 | ||
764aa3e9 JK |
561 | if (lock) |
562 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 563 | |
b3d208f9 JK |
564 | ipage = get_node_page(sbi, inode->i_ino); |
565 | if (IS_ERR(ipage)) { | |
566 | err = PTR_ERR(ipage); | |
567 | goto out; | |
568 | } | |
569 | ||
570 | if (f2fs_has_inline_data(inode)) { | |
bd4667cb | 571 | truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 572 | f2fs_put_page(ipage, 1); |
0bfcfcca | 573 | truncate_page = true; |
b3d208f9 JK |
574 | goto out; |
575 | } | |
576 | ||
577 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 578 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
579 | if (err) { |
580 | if (err == -ENOENT) | |
581 | goto free_next; | |
b3d208f9 | 582 | goto out; |
1ce86bf6 JK |
583 | } |
584 | ||
81ca7350 | 585 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
586 | |
587 | count -= dn.ofs_in_node; | |
9850cf4a | 588 | f2fs_bug_on(sbi, count < 0); |
39936837 | 589 | |
fbfa2cc5 JK |
590 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
591 | truncate_data_blocks_range(&dn, count); | |
592 | free_from += count; | |
593 | } | |
594 | ||
595 | f2fs_put_dnode(&dn); | |
596 | free_next: | |
597 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
598 | out: |
599 | if (lock) | |
600 | f2fs_unlock_op(sbi); | |
09210c97 | 601 | free_partial: |
b3d208f9 JK |
602 | /* lastly zero out the first data page */ |
603 | if (!err) | |
0bfcfcca | 604 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 605 | |
51dd6249 | 606 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
607 | return err; |
608 | } | |
609 | ||
9a449e9c | 610 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 611 | { |
b0154891 CY |
612 | int err; |
613 | ||
fbfa2cc5 JK |
614 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
615 | S_ISLNK(inode->i_mode))) | |
b0154891 | 616 | return 0; |
fbfa2cc5 | 617 | |
51dd6249 NJ |
618 | trace_f2fs_truncate(inode); |
619 | ||
14b44d23 JK |
620 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
621 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { | |
622 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
623 | return -EIO; | |
624 | } | |
625 | #endif | |
92dffd01 | 626 | /* we should check inline_data size */ |
b9d777b8 | 627 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
628 | err = f2fs_convert_inline_inode(inode); |
629 | if (err) | |
630 | return err; | |
92dffd01 JK |
631 | } |
632 | ||
9a449e9c | 633 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
634 | if (err) |
635 | return err; | |
636 | ||
078cd827 | 637 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 638 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 639 | return 0; |
fbfa2cc5 JK |
640 | } |
641 | ||
a528d35e | 642 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
1c6d8ee4 | 643 | u32 request_mask, unsigned int query_flags) |
fbfa2cc5 | 644 | { |
a528d35e | 645 | struct inode *inode = d_inode(path->dentry); |
1c6d8ee4 CY |
646 | struct f2fs_inode_info *fi = F2FS_I(inode); |
647 | unsigned int flags; | |
648 | ||
649 | flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
650 | if (flags & FS_APPEND_FL) | |
651 | stat->attributes |= STATX_ATTR_APPEND; | |
652 | if (flags & FS_COMPR_FL) | |
653 | stat->attributes |= STATX_ATTR_COMPRESSED; | |
654 | if (f2fs_encrypted_inode(inode)) | |
655 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
656 | if (flags & FS_IMMUTABLE_FL) | |
657 | stat->attributes |= STATX_ATTR_IMMUTABLE; | |
658 | if (flags & FS_NODUMP_FL) | |
659 | stat->attributes |= STATX_ATTR_NODUMP; | |
660 | ||
661 | stat->attributes_mask |= (STATX_ATTR_APPEND | | |
662 | STATX_ATTR_COMPRESSED | | |
663 | STATX_ATTR_ENCRYPTED | | |
664 | STATX_ATTR_IMMUTABLE | | |
665 | STATX_ATTR_NODUMP); | |
666 | ||
fbfa2cc5 JK |
667 | generic_fillattr(inode, stat); |
668 | stat->blocks <<= 3; | |
669 | return 0; | |
670 | } | |
671 | ||
672 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
673 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
674 | { | |
fbfa2cc5 JK |
675 | unsigned int ia_valid = attr->ia_valid; |
676 | ||
677 | if (ia_valid & ATTR_UID) | |
678 | inode->i_uid = attr->ia_uid; | |
679 | if (ia_valid & ATTR_GID) | |
680 | inode->i_gid = attr->ia_gid; | |
681 | if (ia_valid & ATTR_ATIME) | |
682 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
683 | inode->i_sb->s_time_gran); | |
684 | if (ia_valid & ATTR_MTIME) | |
685 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
686 | inode->i_sb->s_time_gran); | |
687 | if (ia_valid & ATTR_CTIME) | |
688 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
689 | inode->i_sb->s_time_gran); | |
690 | if (ia_valid & ATTR_MODE) { | |
691 | umode_t mode = attr->ia_mode; | |
692 | ||
693 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
694 | mode &= ~S_ISGID; | |
91942321 | 695 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
696 | } |
697 | } | |
698 | #else | |
699 | #define __setattr_copy setattr_copy | |
700 | #endif | |
701 | ||
702 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
703 | { | |
2b0143b5 | 704 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 705 | int err; |
c0ed4405 | 706 | bool size_changed = false; |
fbfa2cc5 | 707 | |
31051c85 | 708 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
709 | if (err) |
710 | return err; | |
711 | ||
09db6a2e | 712 | if (attr->ia_valid & ATTR_SIZE) { |
67773a1f EB |
713 | if (f2fs_encrypted_inode(inode)) { |
714 | err = fscrypt_get_encryption_info(inode); | |
715 | if (err) | |
716 | return err; | |
717 | if (!fscrypt_has_encryption_key(inode)) | |
718 | return -ENOKEY; | |
719 | } | |
fcc85a4d | 720 | |
3c454145 | 721 | if (attr->ia_size <= i_size_read(inode)) { |
5a3a2d83 | 722 | down_write(&F2FS_I(inode)->i_mmap_sem); |
09db6a2e | 723 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 724 | err = f2fs_truncate(inode); |
5a3a2d83 | 725 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b0154891 CY |
726 | if (err) |
727 | return err; | |
09db6a2e CY |
728 | } else { |
729 | /* | |
3c454145 CY |
730 | * do not trim all blocks after i_size if target size is |
731 | * larger than i_size. | |
09db6a2e | 732 | */ |
5a3a2d83 | 733 | down_write(&F2FS_I(inode)->i_mmap_sem); |
3c454145 | 734 | truncate_setsize(inode, attr->ia_size); |
5a3a2d83 | 735 | up_write(&F2FS_I(inode)->i_mmap_sem); |
0cab80ee CY |
736 | |
737 | /* should convert inline inode here */ | |
b9d777b8 | 738 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
739 | err = f2fs_convert_inline_inode(inode); |
740 | if (err) | |
741 | return err; | |
742 | } | |
078cd827 | 743 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 744 | } |
c0ed4405 YH |
745 | |
746 | size_changed = true; | |
fbfa2cc5 JK |
747 | } |
748 | ||
749 | __setattr_copy(inode, attr); | |
750 | ||
751 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 752 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
753 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
754 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
755 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
756 | } |
757 | } | |
758 | ||
c0ed4405 YH |
759 | /* file size may changed here */ |
760 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
761 | |
762 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
763 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
764 | ||
fbfa2cc5 JK |
765 | return err; |
766 | } | |
767 | ||
768 | const struct inode_operations f2fs_file_inode_operations = { | |
769 | .getattr = f2fs_getattr, | |
770 | .setattr = f2fs_setattr, | |
771 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 772 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 773 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 774 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 775 | #endif |
9ab70134 | 776 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
777 | }; |
778 | ||
6394328a | 779 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
780 | loff_t start, loff_t len) |
781 | { | |
4081363f | 782 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
783 | struct page *page; |
784 | ||
785 | if (!len) | |
6394328a | 786 | return 0; |
fbfa2cc5 | 787 | |
2c4db1a6 | 788 | f2fs_balance_fs(sbi, true); |
bd43df02 | 789 | |
e479556b | 790 | f2fs_lock_op(sbi); |
64aa7ed9 | 791 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 792 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 793 | |
6394328a CY |
794 | if (IS_ERR(page)) |
795 | return PTR_ERR(page); | |
796 | ||
fec1d657 | 797 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
798 | zero_user(page, start, len); |
799 | set_page_dirty(page); | |
800 | f2fs_put_page(page, 1); | |
801 | return 0; | |
fbfa2cc5 JK |
802 | } |
803 | ||
804 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
805 | { | |
fbfa2cc5 JK |
806 | int err; |
807 | ||
ea58711e | 808 | while (pg_start < pg_end) { |
fbfa2cc5 | 809 | struct dnode_of_data dn; |
ea58711e | 810 | pgoff_t end_offset, count; |
9eaeba70 | 811 | |
fbfa2cc5 | 812 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 813 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 814 | if (err) { |
ea58711e CY |
815 | if (err == -ENOENT) { |
816 | pg_start++; | |
fbfa2cc5 | 817 | continue; |
ea58711e | 818 | } |
fbfa2cc5 JK |
819 | return err; |
820 | } | |
821 | ||
81ca7350 | 822 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
823 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
824 | ||
825 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
826 | ||
827 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 828 | f2fs_put_dnode(&dn); |
ea58711e CY |
829 | |
830 | pg_start += count; | |
fbfa2cc5 JK |
831 | } |
832 | return 0; | |
833 | } | |
834 | ||
a66c7b2f | 835 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
836 | { |
837 | pgoff_t pg_start, pg_end; | |
838 | loff_t off_start, off_end; | |
b9d777b8 | 839 | int ret; |
fbfa2cc5 | 840 | |
b9d777b8 JK |
841 | ret = f2fs_convert_inline_inode(inode); |
842 | if (ret) | |
843 | return ret; | |
9ffe0fb5 | 844 | |
09cbfeaf KS |
845 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
846 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 847 | |
09cbfeaf KS |
848 | off_start = offset & (PAGE_SIZE - 1); |
849 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
850 | |
851 | if (pg_start == pg_end) { | |
6394328a | 852 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 853 | off_end - off_start); |
6394328a CY |
854 | if (ret) |
855 | return ret; | |
fbfa2cc5 | 856 | } else { |
6394328a CY |
857 | if (off_start) { |
858 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 859 | PAGE_SIZE - off_start); |
6394328a CY |
860 | if (ret) |
861 | return ret; | |
862 | } | |
863 | if (off_end) { | |
864 | ret = fill_zero(inode, pg_end, 0, off_end); | |
865 | if (ret) | |
866 | return ret; | |
867 | } | |
fbfa2cc5 JK |
868 | |
869 | if (pg_start < pg_end) { | |
870 | struct address_space *mapping = inode->i_mapping; | |
871 | loff_t blk_start, blk_end; | |
4081363f | 872 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 873 | |
2c4db1a6 | 874 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 875 | |
09cbfeaf KS |
876 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
877 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
5a3a2d83 | 878 | down_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
879 | truncate_inode_pages_range(mapping, blk_start, |
880 | blk_end - 1); | |
39936837 | 881 | |
e479556b | 882 | f2fs_lock_op(sbi); |
fbfa2cc5 | 883 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 884 | f2fs_unlock_op(sbi); |
5a3a2d83 | 885 | up_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
886 | } |
887 | } | |
888 | ||
fbfa2cc5 JK |
889 | return ret; |
890 | } | |
891 | ||
0a2aa8fb JK |
892 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
893 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
894 | { |
895 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
896 | struct dnode_of_data dn; | |
0a2aa8fb | 897 | int ret, done, i; |
ecbaa406 | 898 | |
0a2aa8fb | 899 | next_dnode: |
6e2c64ad | 900 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 901 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
902 | if (ret && ret != -ENOENT) { |
903 | return ret; | |
904 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
905 | if (dn.max_level == 0) |
906 | return -ENOENT; | |
907 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
908 | blkaddr += done; | |
909 | do_replace += done; | |
910 | goto next; | |
911 | } | |
912 | ||
913 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
914 | dn.ofs_in_node, len); | |
915 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
916 | *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
917 | if (!is_checkpointed_data(sbi, *blkaddr)) { | |
918 | ||
919 | if (test_opt(sbi, LFS)) { | |
920 | f2fs_put_dnode(&dn); | |
921 | return -ENOTSUPP; | |
922 | } | |
923 | ||
6e2c64ad | 924 | /* do not invalidate this block address */ |
f28b3434 | 925 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 926 | *do_replace = 1; |
b4ace337 | 927 | } |
6e2c64ad | 928 | } |
0a2aa8fb JK |
929 | f2fs_put_dnode(&dn); |
930 | next: | |
931 | len -= done; | |
932 | off += done; | |
933 | if (len) | |
934 | goto next_dnode; | |
935 | return 0; | |
936 | } | |
b4ace337 | 937 | |
0a2aa8fb JK |
938 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
939 | int *do_replace, pgoff_t off, int len) | |
940 | { | |
941 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
942 | struct dnode_of_data dn; | |
943 | int ret, i; | |
b4ace337 | 944 | |
0a2aa8fb JK |
945 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
946 | if (*do_replace == 0) | |
947 | continue; | |
b4ace337 | 948 | |
0a2aa8fb JK |
949 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
950 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
951 | if (ret) { | |
952 | dec_valid_block_count(sbi, inode, 1); | |
953 | invalidate_blocks(sbi, *blkaddr); | |
954 | } else { | |
955 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 956 | } |
0a2aa8fb JK |
957 | f2fs_put_dnode(&dn); |
958 | } | |
959 | return 0; | |
960 | } | |
961 | ||
962 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
963 | block_t *blkaddr, int *do_replace, | |
964 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
965 | { | |
966 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
967 | pgoff_t i = 0; | |
968 | int ret; | |
36abef4e | 969 | |
0a2aa8fb JK |
970 | while (i < len) { |
971 | if (blkaddr[i] == NULL_ADDR && !full) { | |
972 | i++; | |
973 | continue; | |
6e2c64ad | 974 | } |
b4ace337 | 975 | |
0a2aa8fb JK |
976 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
977 | struct dnode_of_data dn; | |
978 | struct node_info ni; | |
979 | size_t new_size; | |
980 | pgoff_t ilen; | |
b4ace337 | 981 | |
0a2aa8fb JK |
982 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
983 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
984 | if (ret) | |
985 | return ret; | |
b4ace337 | 986 | |
0a2aa8fb JK |
987 | get_node_info(sbi, dn.nid, &ni); |
988 | ilen = min((pgoff_t) | |
989 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
990 | dn.ofs_in_node, len - i); | |
991 | do { | |
992 | dn.data_blkaddr = datablock_addr(dn.node_page, | |
993 | dn.ofs_in_node); | |
994 | truncate_data_blocks_range(&dn, 1); | |
995 | ||
996 | if (do_replace[i]) { | |
997 | f2fs_i_blocks_write(src_inode, | |
998 | 1, false); | |
999 | f2fs_i_blocks_write(dst_inode, | |
1000 | 1, true); | |
1001 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
1002 | blkaddr[i], ni.version, true, false); | |
1003 | ||
1004 | do_replace[i] = 0; | |
1005 | } | |
1006 | dn.ofs_in_node++; | |
1007 | i++; | |
1008 | new_size = (dst + i) << PAGE_SHIFT; | |
1009 | if (dst_inode->i_size < new_size) | |
1010 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 1011 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1012 | |
0a2aa8fb JK |
1013 | f2fs_put_dnode(&dn); |
1014 | } else { | |
1015 | struct page *psrc, *pdst; | |
1016 | ||
1017 | psrc = get_lock_data_page(src_inode, src + i, true); | |
1018 | if (IS_ERR(psrc)) | |
1019 | return PTR_ERR(psrc); | |
1020 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
1021 | true); | |
1022 | if (IS_ERR(pdst)) { | |
1023 | f2fs_put_page(psrc, 1); | |
1024 | return PTR_ERR(pdst); | |
1025 | } | |
1026 | f2fs_copy_page(psrc, pdst); | |
1027 | set_page_dirty(pdst); | |
1028 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1029 | f2fs_put_page(psrc, 1); |
b4ace337 | 1030 | |
0a2aa8fb JK |
1031 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
1032 | if (ret) | |
1033 | return ret; | |
1034 | i++; | |
1035 | } | |
6e2c64ad JK |
1036 | } |
1037 | return 0; | |
0a2aa8fb | 1038 | } |
b4ace337 | 1039 | |
0a2aa8fb JK |
1040 | static int __exchange_data_block(struct inode *src_inode, |
1041 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1042 | pgoff_t len, bool full) |
0a2aa8fb JK |
1043 | { |
1044 | block_t *src_blkaddr; | |
1045 | int *do_replace; | |
363cad7f | 1046 | pgoff_t olen; |
0a2aa8fb JK |
1047 | int ret; |
1048 | ||
363cad7f JK |
1049 | while (len) { |
1050 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1051 | |
363cad7f JK |
1052 | src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
1053 | if (!src_blkaddr) | |
1054 | return -ENOMEM; | |
0a2aa8fb | 1055 | |
363cad7f JK |
1056 | do_replace = f2fs_kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
1057 | if (!do_replace) { | |
1058 | kvfree(src_blkaddr); | |
1059 | return -ENOMEM; | |
1060 | } | |
0a2aa8fb | 1061 | |
363cad7f JK |
1062 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1063 | do_replace, src, olen); | |
1064 | if (ret) | |
1065 | goto roll_back; | |
0a2aa8fb | 1066 | |
363cad7f JK |
1067 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1068 | do_replace, src, dst, olen, full); | |
1069 | if (ret) | |
1070 | goto roll_back; | |
1071 | ||
1072 | src += olen; | |
1073 | dst += olen; | |
1074 | len -= olen; | |
1075 | ||
1076 | kvfree(src_blkaddr); | |
1077 | kvfree(do_replace); | |
1078 | } | |
0a2aa8fb JK |
1079 | return 0; |
1080 | ||
1081 | roll_back: | |
1082 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1083 | kvfree(src_blkaddr); | |
1084 | kvfree(do_replace); | |
6e2c64ad JK |
1085 | return ret; |
1086 | } | |
b4ace337 | 1087 | |
6e2c64ad JK |
1088 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1089 | { | |
1090 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1091 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1092 | int ret; |
6e2c64ad | 1093 | |
0a2aa8fb JK |
1094 | f2fs_balance_fs(sbi, true); |
1095 | f2fs_lock_op(sbi); | |
5f281fab JK |
1096 | |
1097 | f2fs_drop_extent_tree(inode); | |
1098 | ||
0a2aa8fb JK |
1099 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1100 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1101 | return ret; |
1102 | } | |
1103 | ||
1104 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1105 | { | |
1106 | pgoff_t pg_start, pg_end; | |
1107 | loff_t new_size; | |
1108 | int ret; | |
1109 | ||
b4ace337 CY |
1110 | if (offset + len >= i_size_read(inode)) |
1111 | return -EINVAL; | |
1112 | ||
1113 | /* collapse range should be aligned to block size of f2fs. */ | |
1114 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1115 | return -EINVAL; | |
1116 | ||
b9d777b8 JK |
1117 | ret = f2fs_convert_inline_inode(inode); |
1118 | if (ret) | |
1119 | return ret; | |
97a7b2c2 | 1120 | |
09cbfeaf KS |
1121 | pg_start = offset >> PAGE_SHIFT; |
1122 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 | 1123 | |
5a3a2d83 | 1124 | down_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 CY |
1125 | /* write out all dirty pages from offset */ |
1126 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1127 | if (ret) | |
5a3a2d83 | 1128 | goto out; |
b4ace337 CY |
1129 | |
1130 | truncate_pagecache(inode, offset); | |
1131 | ||
1132 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1133 | if (ret) | |
5a3a2d83 | 1134 | goto out; |
b4ace337 | 1135 | |
6e2c64ad JK |
1136 | /* write out all moved pages, if possible */ |
1137 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1138 | truncate_pagecache(inode, offset); | |
1139 | ||
b4ace337 | 1140 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1141 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1142 | |
1143 | ret = truncate_blocks(inode, new_size, true); | |
1144 | if (!ret) | |
fc9581c8 | 1145 | f2fs_i_size_write(inode, new_size); |
b4ace337 | 1146 | |
5a3a2d83 QS |
1147 | out: |
1148 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
b4ace337 CY |
1149 | return ret; |
1150 | } | |
1151 | ||
6e961949 CY |
1152 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1153 | pgoff_t end) | |
1154 | { | |
1155 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1156 | pgoff_t index = start; | |
1157 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1158 | blkcnt_t count = 0; | |
1159 | int ret; | |
1160 | ||
1161 | for (; index < end; index++, dn->ofs_in_node++) { | |
1162 | if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR) | |
1163 | count++; | |
1164 | } | |
1165 | ||
1166 | dn->ofs_in_node = ofs_in_node; | |
1167 | ret = reserve_new_blocks(dn, count); | |
1168 | if (ret) | |
1169 | return ret; | |
1170 | ||
1171 | dn->ofs_in_node = ofs_in_node; | |
1172 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
1173 | dn->data_blkaddr = | |
1174 | datablock_addr(dn->node_page, dn->ofs_in_node); | |
1175 | /* | |
1176 | * reserve_new_blocks will not guarantee entire block | |
1177 | * allocation. | |
1178 | */ | |
1179 | if (dn->data_blkaddr == NULL_ADDR) { | |
1180 | ret = -ENOSPC; | |
1181 | break; | |
1182 | } | |
1183 | if (dn->data_blkaddr != NEW_ADDR) { | |
1184 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1185 | dn->data_blkaddr = NEW_ADDR; | |
1186 | set_data_blkaddr(dn); | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1191 | ||
1192 | return ret; | |
1193 | } | |
1194 | ||
75cd4e09 CY |
1195 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1196 | int mode) | |
1197 | { | |
1198 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1199 | struct address_space *mapping = inode->i_mapping; | |
1200 | pgoff_t index, pg_start, pg_end; | |
1201 | loff_t new_size = i_size_read(inode); | |
1202 | loff_t off_start, off_end; | |
1203 | int ret = 0; | |
1204 | ||
75cd4e09 CY |
1205 | ret = inode_newsize_ok(inode, (len + offset)); |
1206 | if (ret) | |
1207 | return ret; | |
1208 | ||
b9d777b8 JK |
1209 | ret = f2fs_convert_inline_inode(inode); |
1210 | if (ret) | |
1211 | return ret; | |
75cd4e09 | 1212 | |
5a3a2d83 | 1213 | down_write(&F2FS_I(inode)->i_mmap_sem); |
75cd4e09 CY |
1214 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
1215 | if (ret) | |
5a3a2d83 | 1216 | goto out_sem; |
75cd4e09 CY |
1217 | |
1218 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1219 | ||
09cbfeaf KS |
1220 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1221 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1222 | |
09cbfeaf KS |
1223 | off_start = offset & (PAGE_SIZE - 1); |
1224 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1225 | |
1226 | if (pg_start == pg_end) { | |
6394328a CY |
1227 | ret = fill_zero(inode, pg_start, off_start, |
1228 | off_end - off_start); | |
1229 | if (ret) | |
5a3a2d83 | 1230 | goto out_sem; |
6394328a | 1231 | |
75cd4e09 CY |
1232 | new_size = max_t(loff_t, new_size, offset + len); |
1233 | } else { | |
1234 | if (off_start) { | |
6394328a | 1235 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1236 | PAGE_SIZE - off_start); |
6394328a | 1237 | if (ret) |
5a3a2d83 | 1238 | goto out_sem; |
6394328a | 1239 | |
75cd4e09 | 1240 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1241 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1242 | } |
1243 | ||
6e961949 | 1244 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1245 | struct dnode_of_data dn; |
6e961949 CY |
1246 | unsigned int end_offset; |
1247 | pgoff_t end; | |
75cd4e09 CY |
1248 | |
1249 | f2fs_lock_op(sbi); | |
1250 | ||
6e961949 CY |
1251 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1252 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1253 | if (ret) { |
1254 | f2fs_unlock_op(sbi); | |
1255 | goto out; | |
1256 | } | |
1257 | ||
6e961949 CY |
1258 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1259 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1260 | ||
1261 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1262 | f2fs_put_dnode(&dn); |
1263 | f2fs_unlock_op(sbi); | |
9434fcde CY |
1264 | |
1265 | f2fs_balance_fs(sbi, dn.node_changed); | |
1266 | ||
6e961949 CY |
1267 | if (ret) |
1268 | goto out; | |
75cd4e09 | 1269 | |
6e961949 | 1270 | index = end; |
75cd4e09 | 1271 | new_size = max_t(loff_t, new_size, |
6e961949 | 1272 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1273 | } |
1274 | ||
1275 | if (off_end) { | |
6394328a CY |
1276 | ret = fill_zero(inode, pg_end, 0, off_end); |
1277 | if (ret) | |
1278 | goto out; | |
1279 | ||
75cd4e09 CY |
1280 | new_size = max_t(loff_t, new_size, offset + len); |
1281 | } | |
1282 | } | |
1283 | ||
1284 | out: | |
ee6d182f | 1285 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1286 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1287 | out_sem: |
1288 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
75cd4e09 CY |
1289 | |
1290 | return ret; | |
1291 | } | |
1292 | ||
f62185d0 CY |
1293 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1294 | { | |
1295 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1296 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1297 | loff_t new_size; |
6e2c64ad | 1298 | int ret = 0; |
f62185d0 | 1299 | |
f62185d0 | 1300 | new_size = i_size_read(inode) + len; |
46e82fb1 KM |
1301 | ret = inode_newsize_ok(inode, new_size); |
1302 | if (ret) | |
1303 | return ret; | |
f62185d0 CY |
1304 | |
1305 | if (offset >= i_size_read(inode)) | |
1306 | return -EINVAL; | |
1307 | ||
1308 | /* insert range should be aligned to block size of f2fs. */ | |
1309 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1310 | return -EINVAL; | |
1311 | ||
b9d777b8 JK |
1312 | ret = f2fs_convert_inline_inode(inode); |
1313 | if (ret) | |
1314 | return ret; | |
97a7b2c2 | 1315 | |
2c4db1a6 | 1316 | f2fs_balance_fs(sbi, true); |
2a340760 | 1317 | |
5a3a2d83 | 1318 | down_write(&F2FS_I(inode)->i_mmap_sem); |
f62185d0 CY |
1319 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1320 | if (ret) | |
5a3a2d83 | 1321 | goto out; |
f62185d0 CY |
1322 | |
1323 | /* write out all dirty pages from offset */ | |
1324 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1325 | if (ret) | |
5a3a2d83 | 1326 | goto out; |
f62185d0 CY |
1327 | |
1328 | truncate_pagecache(inode, offset); | |
1329 | ||
09cbfeaf KS |
1330 | pg_start = offset >> PAGE_SHIFT; |
1331 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1332 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1333 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1334 | ||
1335 | while (!ret && idx > pg_start) { | |
1336 | nr = idx - pg_start; | |
1337 | if (nr > delta) | |
1338 | nr = delta; | |
1339 | idx -= nr; | |
f62185d0 | 1340 | |
f62185d0 | 1341 | f2fs_lock_op(sbi); |
5f281fab JK |
1342 | f2fs_drop_extent_tree(inode); |
1343 | ||
0a2aa8fb JK |
1344 | ret = __exchange_data_block(inode, inode, idx, |
1345 | idx + delta, nr, false); | |
f62185d0 CY |
1346 | f2fs_unlock_op(sbi); |
1347 | } | |
1348 | ||
6e2c64ad JK |
1349 | /* write out all moved pages, if possible */ |
1350 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1351 | truncate_pagecache(inode, offset); | |
1352 | ||
1353 | if (!ret) | |
fc9581c8 | 1354 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1355 | out: |
1356 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
f62185d0 CY |
1357 | return ret; |
1358 | } | |
1359 | ||
fbfa2cc5 JK |
1360 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1361 | loff_t len, int mode) | |
1362 | { | |
4081363f | 1363 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1364 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1365 | pgoff_t pg_end; | |
fbfa2cc5 | 1366 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1367 | loff_t off_end; |
a7de6086 | 1368 | int err; |
fbfa2cc5 | 1369 | |
a7de6086 JK |
1370 | err = inode_newsize_ok(inode, (len + offset)); |
1371 | if (err) | |
1372 | return err; | |
fbfa2cc5 | 1373 | |
a7de6086 JK |
1374 | err = f2fs_convert_inline_inode(inode); |
1375 | if (err) | |
1376 | return err; | |
9e09fc85 | 1377 | |
2c4db1a6 | 1378 | f2fs_balance_fs(sbi, true); |
2a340760 | 1379 | |
e12dd7bd | 1380 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1381 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1382 | |
e12dd7bd JK |
1383 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1384 | map.m_len = pg_end - map.m_lblk; | |
1385 | if (off_end) | |
1386 | map.m_len++; | |
ead43275 | 1387 | |
a7de6086 JK |
1388 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1389 | if (err) { | |
e12dd7bd | 1390 | pgoff_t last_off; |
fbfa2cc5 | 1391 | |
e12dd7bd | 1392 | if (!map.m_len) |
a7de6086 | 1393 | return err; |
98397ff3 | 1394 | |
e12dd7bd JK |
1395 | last_off = map.m_lblk + map.m_len - 1; |
1396 | ||
1397 | /* update new size to the failed position */ | |
1398 | new_size = (last_off == pg_end) ? offset + len: | |
1399 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1400 | } else { | |
1401 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1402 | } |
1403 | ||
ee6d182f | 1404 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1405 | f2fs_i_size_write(inode, new_size); |
fbfa2cc5 | 1406 | |
a7de6086 | 1407 | return err; |
fbfa2cc5 JK |
1408 | } |
1409 | ||
1410 | static long f2fs_fallocate(struct file *file, int mode, | |
1411 | loff_t offset, loff_t len) | |
1412 | { | |
6131ffaa | 1413 | struct inode *inode = file_inode(file); |
587c0a42 | 1414 | long ret = 0; |
fbfa2cc5 | 1415 | |
c998012b CY |
1416 | /* f2fs only support ->fallocate for regular file */ |
1417 | if (!S_ISREG(inode->i_mode)) | |
1418 | return -EINVAL; | |
1419 | ||
f62185d0 CY |
1420 | if (f2fs_encrypted_inode(inode) && |
1421 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1422 | return -EOPNOTSUPP; |
1423 | ||
b4ace337 | 1424 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1425 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1426 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1427 | return -EOPNOTSUPP; |
1428 | ||
5955102c | 1429 | inode_lock(inode); |
3375f696 | 1430 | |
587c0a42 TY |
1431 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1432 | if (offset >= inode->i_size) | |
1433 | goto out; | |
1434 | ||
a66c7b2f | 1435 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1436 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1437 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1438 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1439 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1440 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1441 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1442 | } else { |
fbfa2cc5 | 1443 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1444 | } |
fbfa2cc5 | 1445 | |
3af60a49 | 1446 | if (!ret) { |
078cd827 | 1447 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1448 | f2fs_mark_inode_dirty_sync(inode, false); |
26787236 JK |
1449 | if (mode & FALLOC_FL_KEEP_SIZE) |
1450 | file_set_keep_isize(inode); | |
d0239e1b | 1451 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1452 | } |
3375f696 | 1453 | |
587c0a42 | 1454 | out: |
5955102c | 1455 | inode_unlock(inode); |
3375f696 | 1456 | |
c01e2853 | 1457 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1458 | return ret; |
1459 | } | |
1460 | ||
1e84371f JK |
1461 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1462 | { | |
de5307e4 JK |
1463 | /* |
1464 | * f2fs_relase_file is called at every close calls. So we should | |
1465 | * not drop any inmemory pages by close called by other process. | |
1466 | */ | |
1467 | if (!(filp->f_mode & FMODE_WRITE) || | |
1468 | atomic_read(&inode->i_writecount) != 1) | |
1469 | return 0; | |
1470 | ||
1e84371f JK |
1471 | /* some remained atomic pages should discarded */ |
1472 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1473 | drop_inmem_pages(inode); |
1e84371f | 1474 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1475 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1476 | stat_dec_volatile_write(inode); |
91942321 | 1477 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1478 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1479 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1480 | } |
1481 | return 0; | |
1482 | } | |
1483 | ||
fbfa2cc5 JK |
1484 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1485 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1486 | ||
1487 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1488 | { | |
1489 | if (S_ISDIR(mode)) | |
1490 | return flags; | |
1491 | else if (S_ISREG(mode)) | |
1492 | return flags & F2FS_REG_FLMASK; | |
1493 | else | |
1494 | return flags & F2FS_OTHER_FLMASK; | |
1495 | } | |
1496 | ||
52656e6c | 1497 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1498 | { |
6131ffaa | 1499 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1500 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1501 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1502 | return put_user(flags, (int __user *)arg); | |
1503 | } | |
fbfa2cc5 | 1504 | |
52656e6c JK |
1505 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1506 | { | |
1507 | struct inode *inode = file_inode(filp); | |
1508 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
69494229 | 1509 | unsigned int flags; |
52656e6c JK |
1510 | unsigned int oldflags; |
1511 | int ret; | |
fbfa2cc5 | 1512 | |
7fb17fe4 CY |
1513 | if (!inode_owner_or_capable(inode)) |
1514 | return -EACCES; | |
1515 | ||
1516 | if (get_user(flags, (int __user *)arg)) | |
1517 | return -EFAULT; | |
1518 | ||
52656e6c JK |
1519 | ret = mnt_want_write_file(filp); |
1520 | if (ret) | |
1521 | return ret; | |
fbfa2cc5 | 1522 | |
5955102c | 1523 | inode_lock(inode); |
fbfa2cc5 | 1524 | |
a72d4b97 CY |
1525 | flags = f2fs_mask_flags(inode->i_mode, flags); |
1526 | ||
52656e6c | 1527 | oldflags = fi->i_flags; |
fbfa2cc5 | 1528 | |
52656e6c JK |
1529 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1530 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1531 | inode_unlock(inode); |
52656e6c JK |
1532 | ret = -EPERM; |
1533 | goto out; | |
fbfa2cc5 | 1534 | } |
52656e6c | 1535 | } |
fbfa2cc5 | 1536 | |
52656e6c JK |
1537 | flags = flags & FS_FL_USER_MODIFIABLE; |
1538 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1539 | fi->i_flags = flags; | |
fbfa2cc5 | 1540 | |
078cd827 | 1541 | inode->i_ctime = current_time(inode); |
205b9822 | 1542 | f2fs_set_inode_flags(inode); |
93607124 | 1543 | f2fs_mark_inode_dirty_sync(inode, false); |
a72d4b97 CY |
1544 | |
1545 | inode_unlock(inode); | |
fbfa2cc5 | 1546 | out: |
52656e6c JK |
1547 | mnt_drop_write_file(filp); |
1548 | return ret; | |
1549 | } | |
4b2fecc8 | 1550 | |
d49f3e89 CY |
1551 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1552 | { | |
1553 | struct inode *inode = file_inode(filp); | |
1554 | ||
1555 | return put_user(inode->i_generation, (int __user *)arg); | |
1556 | } | |
1557 | ||
88b88a66 JK |
1558 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1559 | { | |
1560 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1561 | int ret; |
88b88a66 JK |
1562 | |
1563 | if (!inode_owner_or_capable(inode)) | |
1564 | return -EACCES; | |
1565 | ||
e811898c JK |
1566 | if (!S_ISREG(inode->i_mode)) |
1567 | return -EINVAL; | |
1568 | ||
7fb17fe4 CY |
1569 | ret = mnt_want_write_file(filp); |
1570 | if (ret) | |
1571 | return ret; | |
1572 | ||
0fac558b CY |
1573 | inode_lock(inode); |
1574 | ||
1e84371f | 1575 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1576 | goto out; |
88b88a66 | 1577 | |
f4c9c743 CY |
1578 | ret = f2fs_convert_inline_inode(inode); |
1579 | if (ret) | |
7fb17fe4 | 1580 | goto out; |
88b88a66 | 1581 | |
91942321 | 1582 | set_inode_flag(inode, FI_ATOMIC_FILE); |
6c3acd97 | 1583 | set_inode_flag(inode, FI_HOT_DATA); |
d0239e1b JK |
1584 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1585 | ||
c27753d6 | 1586 | if (!get_dirty_pages(inode)) |
684ca7e5 | 1587 | goto inc_stat; |
c27753d6 JK |
1588 | |
1589 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1590 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1591 | inode->i_ino, get_dirty_pages(inode)); |
1592 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
684ca7e5 | 1593 | if (ret) { |
91942321 | 1594 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
684ca7e5 KM |
1595 | goto out; |
1596 | } | |
1597 | ||
1598 | inc_stat: | |
26a28a0c JK |
1599 | stat_inc_atomic_write(inode); |
1600 | stat_update_max_atomic_write(inode); | |
684ca7e5 | 1601 | out: |
0fac558b | 1602 | inode_unlock(inode); |
7fb17fe4 | 1603 | mnt_drop_write_file(filp); |
c27753d6 | 1604 | return ret; |
88b88a66 JK |
1605 | } |
1606 | ||
1607 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1608 | { | |
1609 | struct inode *inode = file_inode(filp); | |
1610 | int ret; | |
1611 | ||
1612 | if (!inode_owner_or_capable(inode)) | |
1613 | return -EACCES; | |
1614 | ||
1615 | ret = mnt_want_write_file(filp); | |
1616 | if (ret) | |
1617 | return ret; | |
1618 | ||
0fac558b CY |
1619 | inode_lock(inode); |
1620 | ||
7fb17fe4 CY |
1621 | if (f2fs_is_volatile_file(inode)) |
1622 | goto err_out; | |
1623 | ||
6282adbf | 1624 | if (f2fs_is_atomic_file(inode)) { |
29b96b54 | 1625 | ret = commit_inmem_pages(inode); |
5fe45743 | 1626 | if (ret) |
edb27dee | 1627 | goto err_out; |
5fe45743 | 1628 | |
26a28a0c | 1629 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1630 | if (!ret) { |
1631 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
1632 | stat_dec_atomic_write(inode); | |
447135a8 | 1633 | } |
26a28a0c JK |
1634 | } else { |
1635 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); | |
6282adbf | 1636 | } |
edb27dee | 1637 | err_out: |
0fac558b | 1638 | inode_unlock(inode); |
88b88a66 JK |
1639 | mnt_drop_write_file(filp); |
1640 | return ret; | |
1641 | } | |
1642 | ||
02a1335f JK |
1643 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1644 | { | |
1645 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1646 | int ret; |
02a1335f JK |
1647 | |
1648 | if (!inode_owner_or_capable(inode)) | |
1649 | return -EACCES; | |
1650 | ||
8ff0971f CY |
1651 | if (!S_ISREG(inode->i_mode)) |
1652 | return -EINVAL; | |
1653 | ||
7fb17fe4 CY |
1654 | ret = mnt_want_write_file(filp); |
1655 | if (ret) | |
1656 | return ret; | |
1657 | ||
0fac558b CY |
1658 | inode_lock(inode); |
1659 | ||
1e84371f | 1660 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1661 | goto out; |
1e84371f | 1662 | |
f4c9c743 CY |
1663 | ret = f2fs_convert_inline_inode(inode); |
1664 | if (ret) | |
7fb17fe4 | 1665 | goto out; |
b3d208f9 | 1666 | |
648d50ba CY |
1667 | stat_inc_volatile_write(inode); |
1668 | stat_update_max_volatile_write(inode); | |
1669 | ||
91942321 | 1670 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1671 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1672 | out: |
0fac558b | 1673 | inode_unlock(inode); |
7fb17fe4 CY |
1674 | mnt_drop_write_file(filp); |
1675 | return ret; | |
02a1335f JK |
1676 | } |
1677 | ||
1e84371f JK |
1678 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1679 | { | |
1680 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1681 | int ret; |
1e84371f JK |
1682 | |
1683 | if (!inode_owner_or_capable(inode)) | |
1684 | return -EACCES; | |
1685 | ||
7fb17fe4 CY |
1686 | ret = mnt_want_write_file(filp); |
1687 | if (ret) | |
1688 | return ret; | |
1689 | ||
0fac558b CY |
1690 | inode_lock(inode); |
1691 | ||
1e84371f | 1692 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1693 | goto out; |
1e84371f | 1694 | |
7fb17fe4 CY |
1695 | if (!f2fs_is_first_block_written(inode)) { |
1696 | ret = truncate_partial_data_page(inode, 0, true); | |
1697 | goto out; | |
1698 | } | |
3c6c2beb | 1699 | |
7fb17fe4 CY |
1700 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1701 | out: | |
0fac558b | 1702 | inode_unlock(inode); |
7fb17fe4 CY |
1703 | mnt_drop_write_file(filp); |
1704 | return ret; | |
1e84371f JK |
1705 | } |
1706 | ||
1707 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1708 | { | |
1709 | struct inode *inode = file_inode(filp); | |
1710 | int ret; | |
1711 | ||
1712 | if (!inode_owner_or_capable(inode)) | |
1713 | return -EACCES; | |
1714 | ||
1715 | ret = mnt_want_write_file(filp); | |
1716 | if (ret) | |
1717 | return ret; | |
1718 | ||
0fac558b CY |
1719 | inode_lock(inode); |
1720 | ||
26dc3d44 | 1721 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1722 | drop_inmem_pages(inode); |
732d5648 | 1723 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1724 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1725 | stat_dec_volatile_write(inode); |
608514de | 1726 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1727 | } |
de6a8ec9 | 1728 | |
0fac558b CY |
1729 | inode_unlock(inode); |
1730 | ||
1e84371f | 1731 | mnt_drop_write_file(filp); |
d0239e1b | 1732 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1733 | return ret; |
1734 | } | |
1735 | ||
1abff93d JK |
1736 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1737 | { | |
1738 | struct inode *inode = file_inode(filp); | |
1739 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1740 | struct super_block *sb = sbi->sb; | |
1741 | __u32 in; | |
7fb17fe4 | 1742 | int ret; |
1abff93d JK |
1743 | |
1744 | if (!capable(CAP_SYS_ADMIN)) | |
1745 | return -EPERM; | |
1746 | ||
1747 | if (get_user(in, (__u32 __user *)arg)) | |
1748 | return -EFAULT; | |
1749 | ||
7fb17fe4 CY |
1750 | ret = mnt_want_write_file(filp); |
1751 | if (ret) | |
1752 | return ret; | |
1753 | ||
1abff93d JK |
1754 | switch (in) { |
1755 | case F2FS_GOING_DOWN_FULLSYNC: | |
1756 | sb = freeze_bdev(sb->s_bdev); | |
1757 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1758 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1759 | thaw_bdev(sb->s_bdev, sb); |
1760 | } | |
1761 | break; | |
1762 | case F2FS_GOING_DOWN_METASYNC: | |
1763 | /* do checkpoint only */ | |
1764 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1765 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1766 | break; |
1767 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1768 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1769 | break; |
c912a829 JK |
1770 | case F2FS_GOING_DOWN_METAFLUSH: |
1771 | sync_meta_pages(sbi, META, LONG_MAX); | |
38f91ca8 | 1772 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1773 | break; |
1abff93d | 1774 | default: |
7fb17fe4 CY |
1775 | ret = -EINVAL; |
1776 | goto out; | |
1abff93d | 1777 | } |
d0239e1b | 1778 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1779 | out: |
1780 | mnt_drop_write_file(filp); | |
1781 | return ret; | |
1abff93d JK |
1782 | } |
1783 | ||
52656e6c JK |
1784 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1785 | { | |
1786 | struct inode *inode = file_inode(filp); | |
1787 | struct super_block *sb = inode->i_sb; | |
1788 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1789 | struct fstrim_range range; | |
1790 | int ret; | |
4b2fecc8 | 1791 | |
52656e6c JK |
1792 | if (!capable(CAP_SYS_ADMIN)) |
1793 | return -EPERM; | |
4b2fecc8 | 1794 | |
52656e6c JK |
1795 | if (!blk_queue_discard(q)) |
1796 | return -EOPNOTSUPP; | |
4b2fecc8 | 1797 | |
52656e6c JK |
1798 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1799 | sizeof(range))) | |
1800 | return -EFAULT; | |
4b2fecc8 | 1801 | |
7fb17fe4 CY |
1802 | ret = mnt_want_write_file(filp); |
1803 | if (ret) | |
1804 | return ret; | |
1805 | ||
52656e6c JK |
1806 | range.minlen = max((unsigned int)range.minlen, |
1807 | q->limits.discard_granularity); | |
1808 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1809 | mnt_drop_write_file(filp); |
52656e6c JK |
1810 | if (ret < 0) |
1811 | return ret; | |
4b2fecc8 | 1812 | |
52656e6c JK |
1813 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1814 | sizeof(range))) | |
1815 | return -EFAULT; | |
d0239e1b | 1816 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1817 | return 0; |
1818 | } | |
1819 | ||
f424f664 JK |
1820 | static bool uuid_is_nonzero(__u8 u[16]) |
1821 | { | |
1822 | int i; | |
1823 | ||
1824 | for (i = 0; i < 16; i++) | |
1825 | if (u[i]) | |
1826 | return true; | |
1827 | return false; | |
1828 | } | |
1829 | ||
1830 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1831 | { | |
f424f664 JK |
1832 | struct inode *inode = file_inode(filp); |
1833 | ||
d0239e1b | 1834 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1835 | |
db717d8e | 1836 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
1837 | } |
1838 | ||
1839 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1840 | { | |
db717d8e | 1841 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
1842 | } |
1843 | ||
1844 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1845 | { | |
1846 | struct inode *inode = file_inode(filp); | |
1847 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1848 | int err; | |
1849 | ||
1850 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1851 | return -EOPNOTSUPP; | |
1852 | ||
1853 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1854 | goto got_it; | |
1855 | ||
1856 | err = mnt_want_write_file(filp); | |
1857 | if (err) | |
1858 | return err; | |
1859 | ||
1860 | /* update superblock with uuid */ | |
1861 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1862 | ||
c5bda1c8 | 1863 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1864 | if (err) { |
1865 | /* undo new data */ | |
1866 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1867 | mnt_drop_write_file(filp); |
f424f664 JK |
1868 | return err; |
1869 | } | |
e8240f65 | 1870 | mnt_drop_write_file(filp); |
f424f664 JK |
1871 | got_it: |
1872 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1873 | 16)) | |
1874 | return -EFAULT; | |
1875 | return 0; | |
1876 | } | |
1877 | ||
c1c1b583 CY |
1878 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1879 | { | |
1880 | struct inode *inode = file_inode(filp); | |
1881 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1882 | __u32 sync; |
7fb17fe4 | 1883 | int ret; |
c1c1b583 CY |
1884 | |
1885 | if (!capable(CAP_SYS_ADMIN)) | |
1886 | return -EPERM; | |
1887 | ||
d530d4d8 | 1888 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1889 | return -EFAULT; |
1890 | ||
d530d4d8 CY |
1891 | if (f2fs_readonly(sbi->sb)) |
1892 | return -EROFS; | |
c1c1b583 | 1893 | |
7fb17fe4 CY |
1894 | ret = mnt_want_write_file(filp); |
1895 | if (ret) | |
1896 | return ret; | |
1897 | ||
d530d4d8 | 1898 | if (!sync) { |
7fb17fe4 CY |
1899 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1900 | ret = -EBUSY; | |
1901 | goto out; | |
1902 | } | |
d530d4d8 CY |
1903 | } else { |
1904 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1905 | } |
1906 | ||
e066b83c | 1907 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
7fb17fe4 CY |
1908 | out: |
1909 | mnt_drop_write_file(filp); | |
1910 | return ret; | |
c1c1b583 CY |
1911 | } |
1912 | ||
456b88e4 CY |
1913 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1914 | { | |
1915 | struct inode *inode = file_inode(filp); | |
1916 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 1917 | int ret; |
456b88e4 CY |
1918 | |
1919 | if (!capable(CAP_SYS_ADMIN)) | |
1920 | return -EPERM; | |
1921 | ||
1922 | if (f2fs_readonly(sbi->sb)) | |
1923 | return -EROFS; | |
1924 | ||
7fb17fe4 CY |
1925 | ret = mnt_want_write_file(filp); |
1926 | if (ret) | |
1927 | return ret; | |
1928 | ||
1929 | ret = f2fs_sync_fs(sbi->sb, 1); | |
1930 | ||
1931 | mnt_drop_write_file(filp); | |
1932 | return ret; | |
456b88e4 CY |
1933 | } |
1934 | ||
d323d005 CY |
1935 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1936 | struct file *filp, | |
1937 | struct f2fs_defragment *range) | |
1938 | { | |
1939 | struct inode *inode = file_inode(filp); | |
da85985c | 1940 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
e15882b6 | 1941 | struct extent_info ei = {0,0,0}; |
d323d005 | 1942 | pgoff_t pg_start, pg_end; |
3519e3f9 | 1943 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1944 | unsigned int total = 0, sec_num; |
d323d005 CY |
1945 | block_t blk_end = 0; |
1946 | bool fragmented = false; | |
1947 | int err; | |
1948 | ||
1949 | /* if in-place-update policy is enabled, don't waste time here */ | |
7eab0c0d | 1950 | if (need_inplace_update_policy(inode, NULL)) |
d323d005 CY |
1951 | return -EINVAL; |
1952 | ||
09cbfeaf KS |
1953 | pg_start = range->start >> PAGE_SHIFT; |
1954 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 1955 | |
2c4db1a6 | 1956 | f2fs_balance_fs(sbi, true); |
d323d005 | 1957 | |
5955102c | 1958 | inode_lock(inode); |
d323d005 CY |
1959 | |
1960 | /* writeback all dirty pages in the range */ | |
1961 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1962 | range->start + range->len - 1); |
d323d005 CY |
1963 | if (err) |
1964 | goto out; | |
1965 | ||
1966 | /* | |
1967 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1968 | * block addresses are continuous. | |
1969 | */ | |
1970 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1971 | if (ei.fofs + ei.len >= pg_end) | |
1972 | goto out; | |
1973 | } | |
1974 | ||
1975 | map.m_lblk = pg_start; | |
d323d005 CY |
1976 | |
1977 | /* | |
1978 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1979 | * physical block addresses are continuous even if there are hole(s) | |
1980 | * in logical blocks. | |
1981 | */ | |
1982 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1983 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1984 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1985 | if (err) | |
1986 | goto out; | |
1987 | ||
1988 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1989 | map.m_lblk++; | |
d323d005 CY |
1990 | continue; |
1991 | } | |
1992 | ||
1993 | if (blk_end && blk_end != map.m_pblk) { | |
1994 | fragmented = true; | |
1995 | break; | |
1996 | } | |
1997 | blk_end = map.m_pblk + map.m_len; | |
1998 | ||
1999 | map.m_lblk += map.m_len; | |
d323d005 CY |
2000 | } |
2001 | ||
2002 | if (!fragmented) | |
2003 | goto out; | |
2004 | ||
2005 | map.m_lblk = pg_start; | |
2006 | map.m_len = pg_end - pg_start; | |
2007 | ||
4ddb1a4d | 2008 | sec_num = (map.m_len + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
d323d005 CY |
2009 | |
2010 | /* | |
2011 | * make sure there are enough free section for LFS allocation, this can | |
2012 | * avoid defragment running in SSR mode when free section are allocated | |
2013 | * intensively | |
2014 | */ | |
7f3037a5 | 2015 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
2016 | err = -EAGAIN; |
2017 | goto out; | |
2018 | } | |
2019 | ||
2020 | while (map.m_lblk < pg_end) { | |
2021 | pgoff_t idx; | |
2022 | int cnt = 0; | |
2023 | ||
2024 | do_map: | |
a1c1e9b7 | 2025 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
2026 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
2027 | if (err) | |
2028 | goto clear_out; | |
2029 | ||
2030 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
2031 | map.m_lblk++; | |
2032 | continue; | |
2033 | } | |
2034 | ||
91942321 | 2035 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2036 | |
2037 | idx = map.m_lblk; | |
2038 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2039 | struct page *page; | |
2040 | ||
2041 | page = get_lock_data_page(inode, idx, true); | |
2042 | if (IS_ERR(page)) { | |
2043 | err = PTR_ERR(page); | |
2044 | goto clear_out; | |
2045 | } | |
2046 | ||
2047 | set_page_dirty(page); | |
2048 | f2fs_put_page(page, 1); | |
2049 | ||
2050 | idx++; | |
2051 | cnt++; | |
2052 | total++; | |
2053 | } | |
2054 | ||
2055 | map.m_lblk = idx; | |
d323d005 CY |
2056 | |
2057 | if (idx < pg_end && cnt < blk_per_seg) | |
2058 | goto do_map; | |
2059 | ||
91942321 | 2060 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2061 | |
2062 | err = filemap_fdatawrite(inode->i_mapping); | |
2063 | if (err) | |
2064 | goto out; | |
2065 | } | |
2066 | clear_out: | |
91942321 | 2067 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2068 | out: |
5955102c | 2069 | inode_unlock(inode); |
d323d005 | 2070 | if (!err) |
09cbfeaf | 2071 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2072 | return err; |
2073 | } | |
2074 | ||
2075 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2076 | { | |
2077 | struct inode *inode = file_inode(filp); | |
2078 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2079 | struct f2fs_defragment range; | |
2080 | int err; | |
2081 | ||
2082 | if (!capable(CAP_SYS_ADMIN)) | |
2083 | return -EPERM; | |
2084 | ||
7eab0c0d | 2085 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
d323d005 CY |
2086 | return -EINVAL; |
2087 | ||
d7563861 KM |
2088 | if (f2fs_readonly(sbi->sb)) |
2089 | return -EROFS; | |
d323d005 CY |
2090 | |
2091 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
d7563861 KM |
2092 | sizeof(range))) |
2093 | return -EFAULT; | |
d323d005 CY |
2094 | |
2095 | /* verify alignment of offset & size */ | |
d7563861 KM |
2096 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2097 | return -EINVAL; | |
d323d005 | 2098 | |
1941d7bc | 2099 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
d7563861 KM |
2100 | sbi->max_file_blocks)) |
2101 | return -EINVAL; | |
2102 | ||
2103 | err = mnt_want_write_file(filp); | |
2104 | if (err) | |
2105 | return err; | |
1941d7bc | 2106 | |
d323d005 | 2107 | err = f2fs_defragment_range(sbi, filp, &range); |
d7563861 KM |
2108 | mnt_drop_write_file(filp); |
2109 | ||
d0239e1b | 2110 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 | 2111 | if (err < 0) |
d7563861 | 2112 | return err; |
d323d005 CY |
2113 | |
2114 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2115 | sizeof(range))) | |
d7563861 KM |
2116 | return -EFAULT; |
2117 | ||
2118 | return 0; | |
d323d005 CY |
2119 | } |
2120 | ||
4dd6f977 JK |
2121 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2122 | struct file *file_out, loff_t pos_out, size_t len) | |
2123 | { | |
2124 | struct inode *src = file_inode(file_in); | |
2125 | struct inode *dst = file_inode(file_out); | |
2126 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2127 | size_t olen = len, dst_max_i_size = 0; | |
2128 | size_t dst_osize; | |
2129 | int ret; | |
2130 | ||
2131 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2132 | src->i_sb != dst->i_sb) | |
2133 | return -EXDEV; | |
2134 | ||
2135 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2136 | return -EROFS; | |
2137 | ||
fe8494bf CY |
2138 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2139 | return -EINVAL; | |
4dd6f977 JK |
2140 | |
2141 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2142 | return -EOPNOTSUPP; | |
2143 | ||
d95fd91c FL |
2144 | if (src == dst) { |
2145 | if (pos_in == pos_out) | |
2146 | return 0; | |
2147 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2148 | return -EINVAL; | |
2149 | } | |
2150 | ||
4dd6f977 | 2151 | inode_lock(src); |
20a3d61d CY |
2152 | if (src != dst) { |
2153 | if (!inode_trylock(dst)) { | |
2154 | ret = -EBUSY; | |
2155 | goto out; | |
2156 | } | |
2157 | } | |
4dd6f977 JK |
2158 | |
2159 | ret = -EINVAL; | |
2160 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2161 | goto out_unlock; | |
2162 | if (len == 0) | |
2163 | olen = len = src->i_size - pos_in; | |
2164 | if (pos_in + len == src->i_size) | |
2165 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2166 | if (len == 0) { | |
2167 | ret = 0; | |
2168 | goto out_unlock; | |
2169 | } | |
2170 | ||
2171 | dst_osize = dst->i_size; | |
2172 | if (pos_out + olen > dst->i_size) | |
2173 | dst_max_i_size = pos_out + olen; | |
2174 | ||
2175 | /* verify the end result is block aligned */ | |
2176 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2177 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2178 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2179 | goto out_unlock; | |
2180 | ||
2181 | ret = f2fs_convert_inline_inode(src); | |
2182 | if (ret) | |
2183 | goto out_unlock; | |
2184 | ||
2185 | ret = f2fs_convert_inline_inode(dst); | |
2186 | if (ret) | |
2187 | goto out_unlock; | |
2188 | ||
2189 | /* write out all dirty pages from offset */ | |
2190 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2191 | pos_in, pos_in + len); | |
2192 | if (ret) | |
2193 | goto out_unlock; | |
2194 | ||
2195 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2196 | pos_out, pos_out + len); | |
2197 | if (ret) | |
2198 | goto out_unlock; | |
2199 | ||
2200 | f2fs_balance_fs(sbi, true); | |
2201 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2202 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2203 | pos_out >> F2FS_BLKSIZE_BITS, | |
2204 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2205 | |
2206 | if (!ret) { | |
2207 | if (dst_max_i_size) | |
2208 | f2fs_i_size_write(dst, dst_max_i_size); | |
2209 | else if (dst_osize != dst->i_size) | |
2210 | f2fs_i_size_write(dst, dst_osize); | |
2211 | } | |
2212 | f2fs_unlock_op(sbi); | |
2213 | out_unlock: | |
2214 | if (src != dst) | |
2215 | inode_unlock(dst); | |
20a3d61d | 2216 | out: |
4dd6f977 JK |
2217 | inode_unlock(src); |
2218 | return ret; | |
2219 | } | |
2220 | ||
2221 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2222 | { | |
2223 | struct f2fs_move_range range; | |
2224 | struct fd dst; | |
2225 | int err; | |
2226 | ||
2227 | if (!(filp->f_mode & FMODE_READ) || | |
2228 | !(filp->f_mode & FMODE_WRITE)) | |
2229 | return -EBADF; | |
2230 | ||
2231 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2232 | sizeof(range))) | |
2233 | return -EFAULT; | |
2234 | ||
2235 | dst = fdget(range.dst_fd); | |
2236 | if (!dst.file) | |
2237 | return -EBADF; | |
2238 | ||
2239 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2240 | err = -EBADF; | |
2241 | goto err_out; | |
2242 | } | |
2243 | ||
2244 | err = mnt_want_write_file(filp); | |
2245 | if (err) | |
2246 | goto err_out; | |
2247 | ||
2248 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2249 | range.pos_out, range.len); | |
2250 | ||
2251 | mnt_drop_write_file(filp); | |
3cecfa5f KM |
2252 | if (err) |
2253 | goto err_out; | |
4dd6f977 JK |
2254 | |
2255 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2256 | &range, sizeof(range))) | |
2257 | err = -EFAULT; | |
2258 | err_out: | |
2259 | fdput(dst); | |
2260 | return err; | |
2261 | } | |
2262 | ||
e066b83c JK |
2263 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2264 | { | |
2265 | struct inode *inode = file_inode(filp); | |
2266 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2267 | struct sit_info *sm = SIT_I(sbi); | |
2268 | unsigned int start_segno = 0, end_segno = 0; | |
2269 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2270 | struct f2fs_flush_device range; | |
2271 | int ret; | |
2272 | ||
2273 | if (!capable(CAP_SYS_ADMIN)) | |
2274 | return -EPERM; | |
2275 | ||
2276 | if (f2fs_readonly(sbi->sb)) | |
2277 | return -EROFS; | |
2278 | ||
2279 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, | |
2280 | sizeof(range))) | |
2281 | return -EFAULT; | |
2282 | ||
2283 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || | |
2284 | sbi->segs_per_sec != 1) { | |
2285 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2286 | "Can't flush %u in %d for segs_per_sec %u != 1\n", | |
2287 | range.dev_num, sbi->s_ndevs, | |
2288 | sbi->segs_per_sec); | |
2289 | return -EINVAL; | |
2290 | } | |
2291 | ||
2292 | ret = mnt_want_write_file(filp); | |
2293 | if (ret) | |
2294 | return ret; | |
2295 | ||
2296 | if (range.dev_num != 0) | |
2297 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2298 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2299 | ||
2300 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2301 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2302 | start_segno = dev_start_segno; | |
2303 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2304 | ||
2305 | while (start_segno < end_segno) { | |
2306 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2307 | ret = -EBUSY; | |
2308 | goto out; | |
2309 | } | |
2310 | sm->last_victim[GC_CB] = end_segno + 1; | |
2311 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2312 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2313 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2314 | if (ret == -EAGAIN) | |
2315 | ret = 0; | |
2316 | else if (ret < 0) | |
2317 | break; | |
2318 | start_segno++; | |
2319 | } | |
2320 | out: | |
2321 | mnt_drop_write_file(filp); | |
2322 | return ret; | |
2323 | } | |
2324 | ||
2325 | ||
52656e6c JK |
2326 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2327 | { | |
2328 | switch (cmd) { | |
2329 | case F2FS_IOC_GETFLAGS: | |
2330 | return f2fs_ioc_getflags(filp, arg); | |
2331 | case F2FS_IOC_SETFLAGS: | |
2332 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2333 | case F2FS_IOC_GETVERSION: |
2334 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2335 | case F2FS_IOC_START_ATOMIC_WRITE: |
2336 | return f2fs_ioc_start_atomic_write(filp); | |
2337 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2338 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2339 | case F2FS_IOC_START_VOLATILE_WRITE: |
2340 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2341 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2342 | return f2fs_ioc_release_volatile_write(filp); | |
2343 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2344 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2345 | case F2FS_IOC_SHUTDOWN: |
2346 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2347 | case FITRIM: |
2348 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2349 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2350 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2351 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2352 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2353 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2354 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2355 | case F2FS_IOC_GARBAGE_COLLECT: |
2356 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
2357 | case F2FS_IOC_WRITE_CHECKPOINT: |
2358 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2359 | case F2FS_IOC_DEFRAGMENT: |
2360 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2361 | case F2FS_IOC_MOVE_RANGE: |
2362 | return f2fs_ioc_move_range(filp, arg); | |
e066b83c JK |
2363 | case F2FS_IOC_FLUSH_DEVICE: |
2364 | return f2fs_ioc_flush_device(filp, arg); | |
fbfa2cc5 JK |
2365 | default: |
2366 | return -ENOTTY; | |
2367 | } | |
2368 | } | |
2369 | ||
fcc85a4d JK |
2370 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2371 | { | |
b439b103 JK |
2372 | struct file *file = iocb->ki_filp; |
2373 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2374 | struct blk_plug plug; |
b439b103 | 2375 | ssize_t ret; |
fcc85a4d | 2376 | |
b439b103 JK |
2377 | inode_lock(inode); |
2378 | ret = generic_write_checks(iocb, from); | |
2379 | if (ret > 0) { | |
dc91de78 | 2380 | int err; |
a7de6086 | 2381 | |
dc91de78 JK |
2382 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
2383 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 2384 | |
dc91de78 | 2385 | err = f2fs_preallocate_blocks(iocb, from); |
a7de6086 JK |
2386 | if (err) { |
2387 | inode_unlock(inode); | |
2388 | return err; | |
9dfa1baf | 2389 | } |
a7de6086 JK |
2390 | blk_start_plug(&plug); |
2391 | ret = __generic_file_write_iter(iocb, from); | |
2392 | blk_finish_plug(&plug); | |
dc91de78 | 2393 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b439b103 JK |
2394 | } |
2395 | inode_unlock(inode); | |
2396 | ||
e2592217 CH |
2397 | if (ret > 0) |
2398 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2399 | return ret; |
fcc85a4d JK |
2400 | } |
2401 | ||
e9750824 NJ |
2402 | #ifdef CONFIG_COMPAT |
2403 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2404 | { | |
2405 | switch (cmd) { | |
2406 | case F2FS_IOC32_GETFLAGS: | |
2407 | cmd = F2FS_IOC_GETFLAGS; | |
2408 | break; | |
2409 | case F2FS_IOC32_SETFLAGS: | |
2410 | cmd = F2FS_IOC_SETFLAGS; | |
2411 | break; | |
04ef4b62 CY |
2412 | case F2FS_IOC32_GETVERSION: |
2413 | cmd = F2FS_IOC_GETVERSION; | |
2414 | break; | |
2415 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2416 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2417 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2418 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2419 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2420 | case F2FS_IOC_SHUTDOWN: | |
2421 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2422 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2423 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2424 | case F2FS_IOC_GARBAGE_COLLECT: | |
2425 | case F2FS_IOC_WRITE_CHECKPOINT: | |
2426 | case F2FS_IOC_DEFRAGMENT: | |
4dd6f977 | 2427 | case F2FS_IOC_MOVE_RANGE: |
e066b83c | 2428 | case F2FS_IOC_FLUSH_DEVICE: |
4dd6f977 | 2429 | break; |
e9750824 NJ |
2430 | default: |
2431 | return -ENOIOCTLCMD; | |
2432 | } | |
2433 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2434 | } | |
2435 | #endif | |
2436 | ||
fbfa2cc5 | 2437 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2438 | .llseek = f2fs_llseek, |
aad4f8bb | 2439 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2440 | .write_iter = f2fs_file_write_iter, |
2441 | .open = f2fs_file_open, | |
12662234 | 2442 | .release = f2fs_release_file, |
fbfa2cc5 JK |
2443 | .mmap = f2fs_file_mmap, |
2444 | .fsync = f2fs_sync_file, | |
2445 | .fallocate = f2fs_fallocate, | |
2446 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2447 | #ifdef CONFIG_COMPAT |
2448 | .compat_ioctl = f2fs_compat_ioctl, | |
2449 | #endif | |
fbfa2cc5 | 2450 | .splice_read = generic_file_splice_read, |
8d020765 | 2451 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2452 | }; |