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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 | |
11bac800 | 36 | static int f2fs_vm_page_mkwrite(struct vm_fault *vmf) |
fbfa2cc5 JK |
37 | { |
38 | struct page *page = vmf->page; | |
11bac800 | 39 | struct inode *inode = file_inode(vmf->vma->vm_file); |
4081363f | 40 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 41 | struct dnode_of_data dn; |
e479556b | 42 | int err; |
fbfa2cc5 | 43 | |
fbfa2cc5 | 44 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
45 | |
46 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 47 | |
fbfa2cc5 | 48 | /* block allocation */ |
e479556b | 49 | f2fs_lock_op(sbi); |
b3d208f9 | 50 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 51 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
52 | if (err) { |
53 | f2fs_unlock_op(sbi); | |
b600965c | 54 | goto out; |
9ba69cf9 JK |
55 | } |
56 | f2fs_put_dnode(&dn); | |
57 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 58 | |
2c4db1a6 | 59 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 60 | |
11bac800 | 61 | file_update_time(vmf->vma->vm_file); |
fbfa2cc5 | 62 | lock_page(page); |
6bacf52f | 63 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 64 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 65 | !PageUptodate(page))) { |
fbfa2cc5 JK |
66 | unlock_page(page); |
67 | err = -EFAULT; | |
68 | goto out; | |
69 | } | |
70 | ||
71 | /* | |
72 | * check to see if the page is mapped already (no holes) | |
73 | */ | |
74 | if (PageMappedToDisk(page)) | |
9851e6e1 | 75 | goto mapped; |
fbfa2cc5 JK |
76 | |
77 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 78 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 79 | i_size_read(inode)) { |
fbfa2cc5 | 80 | unsigned offset; |
09cbfeaf KS |
81 | offset = i_size_read(inode) & ~PAGE_MASK; |
82 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
83 | } |
84 | set_page_dirty(page); | |
237c0790 JK |
85 | if (!PageUptodate(page)) |
86 | SetPageUptodate(page); | |
fbfa2cc5 | 87 | |
e943a10d | 88 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
89 | mapped: |
90 | /* fill the page */ | |
fec1d657 | 91 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
92 | |
93 | /* wait for GCed encrypted page writeback */ | |
94 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) | |
95 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); | |
96 | ||
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; | |
bbf156f7 | 136 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
e7d55452 | 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; | |
d5053a34 JK |
144 | else if (test_opt(sbi, FASTBOOT)) |
145 | need_cp = true; | |
a344b9fd JK |
146 | else if (sbi->active_logs == 2) |
147 | need_cp = true; | |
9d1589ef CY |
148 | |
149 | return need_cp; | |
150 | } | |
151 | ||
9c7bb702 CL |
152 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
153 | { | |
154 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
155 | bool ret = false; | |
156 | /* But we need to avoid that there are some inode updates */ | |
157 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
158 | ret = true; | |
159 | f2fs_put_page(i, 0); | |
160 | return ret; | |
161 | } | |
162 | ||
51455b19 CL |
163 | static void try_to_fix_pino(struct inode *inode) |
164 | { | |
165 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
166 | nid_t pino; | |
167 | ||
168 | down_write(&fi->i_sem); | |
51455b19 CL |
169 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
170 | get_parent_ino(inode, &pino)) { | |
205b9822 | 171 | f2fs_i_pino_write(inode, pino); |
51455b19 | 172 | file_got_pino(inode); |
51455b19 | 173 | } |
ee6d182f | 174 | up_write(&fi->i_sem); |
51455b19 CL |
175 | } |
176 | ||
608514de JK |
177 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
178 | int datasync, bool atomic) | |
fbfa2cc5 JK |
179 | { |
180 | struct inode *inode = file->f_mapping->host; | |
4081363f | 181 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 182 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
183 | int ret = 0; |
184 | bool need_cp = false; | |
185 | struct writeback_control wbc = { | |
c81bf1c8 | 186 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
187 | .nr_to_write = LONG_MAX, |
188 | .for_reclaim = 0, | |
189 | }; | |
190 | ||
6bacf52f | 191 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
192 | return 0; |
193 | ||
a2a4a7e4 | 194 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
195 | |
196 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 197 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 198 | set_inode_flag(inode, FI_NEED_IPU); |
fbfa2cc5 | 199 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
91942321 | 200 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 201 | |
a2a4a7e4 NJ |
202 | if (ret) { |
203 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 204 | return ret; |
a2a4a7e4 | 205 | } |
fbfa2cc5 | 206 | |
9c7bb702 | 207 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 208 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 209 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
210 | goto go_write; |
211 | } | |
212 | ||
6d99ba41 JK |
213 | /* |
214 | * if there is no written data, don't waste time to write recovery info. | |
215 | */ | |
91942321 | 216 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 217 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 218 | |
9c7bb702 CL |
219 | /* it may call write_inode just prior to fsync */ |
220 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 221 | goto go_write; |
19c9c466 | 222 | |
91942321 | 223 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 224 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
225 | goto flush_out; |
226 | goto out; | |
227 | } | |
19c9c466 | 228 | go_write: |
e5d2385e JK |
229 | /* |
230 | * Both of fdatasync() and fsync() are able to be recovered from | |
231 | * sudden-power-off. | |
232 | */ | |
91942321 | 233 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 234 | need_cp = need_do_checkpoint(inode); |
91942321 | 235 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 236 | |
fbfa2cc5 JK |
237 | if (need_cp) { |
238 | /* all the dirty node pages should be flushed for POR */ | |
239 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 240 | |
51455b19 CL |
241 | /* |
242 | * We've secured consistency through sync_fs. Following pino | |
243 | * will be used only for fsynced inodes after checkpoint. | |
244 | */ | |
245 | try_to_fix_pino(inode); | |
91942321 JK |
246 | clear_inode_flag(inode, FI_APPEND_WRITE); |
247 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
248 | goto out; |
249 | } | |
88bd02c9 | 250 | sync_nodes: |
26de9b11 | 251 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
252 | if (ret) |
253 | goto out; | |
51455b19 | 254 | |
871f599f | 255 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
256 | if (unlikely(f2fs_cp_error(sbi))) { |
257 | ret = -EIO; | |
871f599f | 258 | goto out; |
6d5a1495 | 259 | } |
871f599f | 260 | |
51455b19 | 261 | if (need_inode_block_update(sbi, ino)) { |
7c45729a | 262 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
263 | f2fs_write_inode(inode, NULL); |
264 | goto sync_nodes; | |
fbfa2cc5 | 265 | } |
51455b19 CL |
266 | |
267 | ret = wait_on_node_pages_writeback(sbi, ino); | |
268 | if (ret) | |
269 | goto out; | |
270 | ||
271 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 272 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 273 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 274 | flush_out: |
a49324f1 | 275 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 276 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
e7c75ab0 JK |
277 | if (!atomic) |
278 | ret = f2fs_issue_flush(sbi); | |
d0239e1b | 279 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 280 | out: |
a2a4a7e4 | 281 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 282 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
283 | return ret; |
284 | } | |
285 | ||
608514de JK |
286 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
287 | { | |
288 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
289 | } | |
290 | ||
7f7670fe JK |
291 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
292 | pgoff_t pgofs, int whence) | |
293 | { | |
294 | struct pagevec pvec; | |
295 | int nr_pages; | |
296 | ||
297 | if (whence != SEEK_DATA) | |
298 | return 0; | |
299 | ||
300 | /* find first dirty page index */ | |
301 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
302 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
303 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 304 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
305 | pagevec_release(&pvec); |
306 | return pgofs; | |
307 | } | |
308 | ||
309 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
310 | int whence) | |
311 | { | |
312 | switch (whence) { | |
313 | case SEEK_DATA: | |
314 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
315 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
316 | return true; | |
317 | break; | |
318 | case SEEK_HOLE: | |
319 | if (blkaddr == NULL_ADDR) | |
320 | return true; | |
321 | break; | |
322 | } | |
323 | return false; | |
324 | } | |
325 | ||
267378d4 CY |
326 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
327 | { | |
328 | struct inode *inode = file->f_mapping->host; | |
329 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
330 | struct dnode_of_data dn; | |
7f7670fe JK |
331 | pgoff_t pgofs, end_offset, dirty; |
332 | loff_t data_ofs = offset; | |
333 | loff_t isize; | |
267378d4 CY |
334 | int err = 0; |
335 | ||
5955102c | 336 | inode_lock(inode); |
267378d4 CY |
337 | |
338 | isize = i_size_read(inode); | |
339 | if (offset >= isize) | |
340 | goto fail; | |
341 | ||
342 | /* handle inline data case */ | |
622f28ae | 343 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
344 | if (whence == SEEK_HOLE) |
345 | data_ofs = isize; | |
346 | goto found; | |
347 | } | |
348 | ||
09cbfeaf | 349 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 350 | |
7f7670fe JK |
351 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
352 | ||
09cbfeaf | 353 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 354 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 355 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
356 | if (err && err != -ENOENT) { |
357 | goto fail; | |
358 | } else if (err == -ENOENT) { | |
e1c42045 | 359 | /* direct node does not exists */ |
267378d4 | 360 | if (whence == SEEK_DATA) { |
3cf45747 | 361 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
362 | continue; |
363 | } else { | |
364 | goto found; | |
365 | } | |
366 | } | |
367 | ||
81ca7350 | 368 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
369 | |
370 | /* find data/hole in dnode block */ | |
371 | for (; dn.ofs_in_node < end_offset; | |
372 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 373 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
374 | block_t blkaddr; |
375 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
376 | ||
7f7670fe | 377 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
378 | f2fs_put_dnode(&dn); |
379 | goto found; | |
380 | } | |
381 | } | |
382 | f2fs_put_dnode(&dn); | |
383 | } | |
384 | ||
385 | if (whence == SEEK_DATA) | |
386 | goto fail; | |
267378d4 | 387 | found: |
fe369bc8 JK |
388 | if (whence == SEEK_HOLE && data_ofs > isize) |
389 | data_ofs = isize; | |
5955102c | 390 | inode_unlock(inode); |
267378d4 CY |
391 | return vfs_setpos(file, data_ofs, maxbytes); |
392 | fail: | |
5955102c | 393 | inode_unlock(inode); |
267378d4 CY |
394 | return -ENXIO; |
395 | } | |
396 | ||
397 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
398 | { | |
399 | struct inode *inode = file->f_mapping->host; | |
400 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
401 | ||
402 | switch (whence) { | |
403 | case SEEK_SET: | |
404 | case SEEK_CUR: | |
405 | case SEEK_END: | |
406 | return generic_file_llseek_size(file, offset, whence, | |
407 | maxbytes, i_size_read(inode)); | |
408 | case SEEK_DATA: | |
409 | case SEEK_HOLE: | |
0b4c5afd JK |
410 | if (offset < 0) |
411 | return -ENXIO; | |
267378d4 CY |
412 | return f2fs_seek_block(file, offset, whence); |
413 | } | |
414 | ||
415 | return -EINVAL; | |
416 | } | |
417 | ||
fbfa2cc5 JK |
418 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
419 | { | |
b3d208f9 | 420 | struct inode *inode = file_inode(file); |
b9d777b8 | 421 | int err; |
b3d208f9 | 422 | |
fcc85a4d | 423 | if (f2fs_encrypted_inode(inode)) { |
0b81d077 | 424 | err = fscrypt_get_encryption_info(inode); |
fcc85a4d JK |
425 | if (err) |
426 | return 0; | |
ae108668 CY |
427 | if (!f2fs_encrypted_inode(inode)) |
428 | return -ENOKEY; | |
fcc85a4d JK |
429 | } |
430 | ||
b3d208f9 | 431 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
432 | err = f2fs_convert_inline_inode(inode); |
433 | if (err) | |
434 | return err; | |
b3d208f9 | 435 | |
fbfa2cc5 JK |
436 | file_accessed(file); |
437 | vma->vm_ops = &f2fs_file_vm_ops; | |
438 | return 0; | |
439 | } | |
440 | ||
fcc85a4d JK |
441 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
442 | { | |
443 | int ret = generic_file_open(inode, filp); | |
33b13951 | 444 | struct dentry *dir; |
fcc85a4d JK |
445 | |
446 | if (!ret && f2fs_encrypted_inode(inode)) { | |
0b81d077 | 447 | ret = fscrypt_get_encryption_info(inode); |
fcc85a4d | 448 | if (ret) |
ae108668 | 449 | return -EACCES; |
0b81d077 | 450 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 451 | return -ENOKEY; |
fcc85a4d | 452 | } |
33b13951 JK |
453 | dir = dget_parent(file_dentry(filp)); |
454 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
455 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
456 | dput(dir); | |
8074bb51 | 457 | return -EPERM; |
33b13951 JK |
458 | } |
459 | dput(dir); | |
fcc85a4d JK |
460 | return ret; |
461 | } | |
462 | ||
b292dcab | 463 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 464 | { |
4081363f | 465 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 466 | struct f2fs_node *raw_node; |
19b2c30d | 467 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
468 | __le32 *addr; |
469 | ||
45590710 | 470 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
471 | addr = blkaddr_in_node(raw_node) + ofs; |
472 | ||
6c311ec6 | 473 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
474 | block_t blkaddr = le32_to_cpu(*addr); |
475 | if (blkaddr == NULL_ADDR) | |
476 | continue; | |
477 | ||
e1509cf2 | 478 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 479 | set_data_blkaddr(dn); |
fbfa2cc5 | 480 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 481 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 482 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
483 | nr_free++; |
484 | } | |
19b2c30d | 485 | |
fbfa2cc5 | 486 | if (nr_free) { |
19b2c30d CY |
487 | pgoff_t fofs; |
488 | /* | |
489 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
490 | * we will invalidate all blkaddr in the whole range. | |
491 | */ | |
492 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 493 | dn->inode) + ofs; |
19b2c30d | 494 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 495 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
496 | } |
497 | dn->ofs_in_node = ofs; | |
51dd6249 | 498 | |
d0239e1b | 499 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
500 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
501 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
502 | return nr_free; |
503 | } | |
504 | ||
505 | void truncate_data_blocks(struct dnode_of_data *dn) | |
506 | { | |
507 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
508 | } | |
509 | ||
0bfcfcca | 510 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 511 | bool cache_only) |
fbfa2cc5 | 512 | { |
09cbfeaf KS |
513 | unsigned offset = from & (PAGE_SIZE - 1); |
514 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 515 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
516 | struct page *page; |
517 | ||
43f3eae1 | 518 | if (!offset && !cache_only) |
b3d208f9 | 519 | return 0; |
fbfa2cc5 | 520 | |
43f3eae1 | 521 | if (cache_only) { |
34b5d5c2 | 522 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
523 | if (page && PageUptodate(page)) |
524 | goto truncate_out; | |
525 | f2fs_put_page(page, 1); | |
b3d208f9 | 526 | return 0; |
43f3eae1 | 527 | } |
fbfa2cc5 | 528 | |
a56c7c6f | 529 | page = get_lock_data_page(inode, index, true); |
43f3eae1 JK |
530 | if (IS_ERR(page)) |
531 | return 0; | |
532 | truncate_out: | |
fec1d657 | 533 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 534 | zero_user(page, offset, PAGE_SIZE - offset); |
0b81d077 JK |
535 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
536 | !S_ISREG(inode->i_mode)) | |
0bfcfcca | 537 | set_page_dirty(page); |
fbfa2cc5 | 538 | f2fs_put_page(page, 1); |
b3d208f9 | 539 | return 0; |
fbfa2cc5 JK |
540 | } |
541 | ||
764aa3e9 | 542 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 543 | { |
4081363f | 544 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
545 | unsigned int blocksize = inode->i_sb->s_blocksize; |
546 | struct dnode_of_data dn; | |
547 | pgoff_t free_from; | |
9ffe0fb5 | 548 | int count = 0, err = 0; |
b3d208f9 | 549 | struct page *ipage; |
0bfcfcca | 550 | bool truncate_page = false; |
fbfa2cc5 | 551 | |
51dd6249 NJ |
552 | trace_f2fs_truncate_blocks_enter(inode, from); |
553 | ||
f7ef9b83 | 554 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 555 | |
09210c97 CY |
556 | if (free_from >= sbi->max_file_blocks) |
557 | goto free_partial; | |
558 | ||
764aa3e9 JK |
559 | if (lock) |
560 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 561 | |
b3d208f9 JK |
562 | ipage = get_node_page(sbi, inode->i_ino); |
563 | if (IS_ERR(ipage)) { | |
564 | err = PTR_ERR(ipage); | |
565 | goto out; | |
566 | } | |
567 | ||
568 | if (f2fs_has_inline_data(inode)) { | |
4fcf589a | 569 | truncate_inline_inode(ipage, from); |
bb95d9ab JK |
570 | if (from == 0) |
571 | clear_inode_flag(inode, FI_DATA_EXIST); | |
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 | ||
92dffd01 | 620 | /* we should check inline_data size */ |
b9d777b8 | 621 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
622 | err = f2fs_convert_inline_inode(inode); |
623 | if (err) | |
624 | return err; | |
92dffd01 JK |
625 | } |
626 | ||
9a449e9c | 627 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
628 | if (err) |
629 | return err; | |
630 | ||
078cd827 | 631 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 632 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 633 | return 0; |
fbfa2cc5 JK |
634 | } |
635 | ||
a528d35e DH |
636 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
637 | u32 request_mask, unsigned int flags) | |
fbfa2cc5 | 638 | { |
a528d35e | 639 | struct inode *inode = d_inode(path->dentry); |
fbfa2cc5 JK |
640 | generic_fillattr(inode, stat); |
641 | stat->blocks <<= 3; | |
642 | return 0; | |
643 | } | |
644 | ||
645 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
646 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
647 | { | |
fbfa2cc5 JK |
648 | unsigned int ia_valid = attr->ia_valid; |
649 | ||
650 | if (ia_valid & ATTR_UID) | |
651 | inode->i_uid = attr->ia_uid; | |
652 | if (ia_valid & ATTR_GID) | |
653 | inode->i_gid = attr->ia_gid; | |
654 | if (ia_valid & ATTR_ATIME) | |
655 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
656 | inode->i_sb->s_time_gran); | |
657 | if (ia_valid & ATTR_MTIME) | |
658 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
659 | inode->i_sb->s_time_gran); | |
660 | if (ia_valid & ATTR_CTIME) | |
661 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
662 | inode->i_sb->s_time_gran); | |
663 | if (ia_valid & ATTR_MODE) { | |
664 | umode_t mode = attr->ia_mode; | |
665 | ||
666 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
667 | mode &= ~S_ISGID; | |
91942321 | 668 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
669 | } |
670 | } | |
671 | #else | |
672 | #define __setattr_copy setattr_copy | |
673 | #endif | |
674 | ||
675 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
676 | { | |
2b0143b5 | 677 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 678 | int err; |
c0ed4405 | 679 | bool size_changed = false; |
fbfa2cc5 | 680 | |
31051c85 | 681 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
682 | if (err) |
683 | return err; | |
684 | ||
09db6a2e | 685 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d | 686 | if (f2fs_encrypted_inode(inode) && |
0b81d077 | 687 | fscrypt_get_encryption_info(inode)) |
fcc85a4d JK |
688 | return -EACCES; |
689 | ||
3c454145 | 690 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 691 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 692 | err = f2fs_truncate(inode); |
b0154891 CY |
693 | if (err) |
694 | return err; | |
09db6a2e CY |
695 | } else { |
696 | /* | |
3c454145 CY |
697 | * do not trim all blocks after i_size if target size is |
698 | * larger than i_size. | |
09db6a2e | 699 | */ |
3c454145 | 700 | truncate_setsize(inode, attr->ia_size); |
0cab80ee CY |
701 | |
702 | /* should convert inline inode here */ | |
b9d777b8 | 703 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
704 | err = f2fs_convert_inline_inode(inode); |
705 | if (err) | |
706 | return err; | |
707 | } | |
078cd827 | 708 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 709 | } |
c0ed4405 YH |
710 | |
711 | size_changed = true; | |
fbfa2cc5 JK |
712 | } |
713 | ||
714 | __setattr_copy(inode, attr); | |
715 | ||
716 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 717 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
718 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
719 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
720 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
721 | } |
722 | } | |
723 | ||
c0ed4405 YH |
724 | /* file size may changed here */ |
725 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
726 | |
727 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
728 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
729 | ||
fbfa2cc5 JK |
730 | return err; |
731 | } | |
732 | ||
733 | const struct inode_operations f2fs_file_inode_operations = { | |
734 | .getattr = f2fs_getattr, | |
735 | .setattr = f2fs_setattr, | |
736 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 737 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 738 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 739 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 740 | #endif |
9ab70134 | 741 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
742 | }; |
743 | ||
6394328a | 744 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
745 | loff_t start, loff_t len) |
746 | { | |
4081363f | 747 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
748 | struct page *page; |
749 | ||
750 | if (!len) | |
6394328a | 751 | return 0; |
fbfa2cc5 | 752 | |
2c4db1a6 | 753 | f2fs_balance_fs(sbi, true); |
bd43df02 | 754 | |
e479556b | 755 | f2fs_lock_op(sbi); |
64aa7ed9 | 756 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 757 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 758 | |
6394328a CY |
759 | if (IS_ERR(page)) |
760 | return PTR_ERR(page); | |
761 | ||
fec1d657 | 762 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
763 | zero_user(page, start, len); |
764 | set_page_dirty(page); | |
765 | f2fs_put_page(page, 1); | |
766 | return 0; | |
fbfa2cc5 JK |
767 | } |
768 | ||
769 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
770 | { | |
fbfa2cc5 JK |
771 | int err; |
772 | ||
ea58711e | 773 | while (pg_start < pg_end) { |
fbfa2cc5 | 774 | struct dnode_of_data dn; |
ea58711e | 775 | pgoff_t end_offset, count; |
9eaeba70 | 776 | |
fbfa2cc5 | 777 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 778 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 779 | if (err) { |
ea58711e CY |
780 | if (err == -ENOENT) { |
781 | pg_start++; | |
fbfa2cc5 | 782 | continue; |
ea58711e | 783 | } |
fbfa2cc5 JK |
784 | return err; |
785 | } | |
786 | ||
81ca7350 | 787 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
788 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
789 | ||
790 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
791 | ||
792 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 793 | f2fs_put_dnode(&dn); |
ea58711e CY |
794 | |
795 | pg_start += count; | |
fbfa2cc5 JK |
796 | } |
797 | return 0; | |
798 | } | |
799 | ||
a66c7b2f | 800 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
801 | { |
802 | pgoff_t pg_start, pg_end; | |
803 | loff_t off_start, off_end; | |
b9d777b8 | 804 | int ret; |
fbfa2cc5 | 805 | |
b9d777b8 JK |
806 | ret = f2fs_convert_inline_inode(inode); |
807 | if (ret) | |
808 | return ret; | |
9ffe0fb5 | 809 | |
09cbfeaf KS |
810 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
811 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 812 | |
09cbfeaf KS |
813 | off_start = offset & (PAGE_SIZE - 1); |
814 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
815 | |
816 | if (pg_start == pg_end) { | |
6394328a | 817 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 818 | off_end - off_start); |
6394328a CY |
819 | if (ret) |
820 | return ret; | |
fbfa2cc5 | 821 | } else { |
6394328a CY |
822 | if (off_start) { |
823 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 824 | PAGE_SIZE - off_start); |
6394328a CY |
825 | if (ret) |
826 | return ret; | |
827 | } | |
828 | if (off_end) { | |
829 | ret = fill_zero(inode, pg_end, 0, off_end); | |
830 | if (ret) | |
831 | return ret; | |
832 | } | |
fbfa2cc5 JK |
833 | |
834 | if (pg_start < pg_end) { | |
835 | struct address_space *mapping = inode->i_mapping; | |
836 | loff_t blk_start, blk_end; | |
4081363f | 837 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 838 | |
2c4db1a6 | 839 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 840 | |
09cbfeaf KS |
841 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
842 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
fbfa2cc5 JK |
843 | truncate_inode_pages_range(mapping, blk_start, |
844 | blk_end - 1); | |
39936837 | 845 | |
e479556b | 846 | f2fs_lock_op(sbi); |
fbfa2cc5 | 847 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 848 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
849 | } |
850 | } | |
851 | ||
fbfa2cc5 JK |
852 | return ret; |
853 | } | |
854 | ||
0a2aa8fb JK |
855 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
856 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
857 | { |
858 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
859 | struct dnode_of_data dn; | |
0a2aa8fb | 860 | int ret, done, i; |
ecbaa406 | 861 | |
0a2aa8fb | 862 | next_dnode: |
6e2c64ad | 863 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 864 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
865 | if (ret && ret != -ENOENT) { |
866 | return ret; | |
867 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
868 | if (dn.max_level == 0) |
869 | return -ENOENT; | |
870 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
871 | blkaddr += done; | |
872 | do_replace += done; | |
873 | goto next; | |
874 | } | |
875 | ||
876 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
877 | dn.ofs_in_node, len); | |
878 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
879 | *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
880 | if (!is_checkpointed_data(sbi, *blkaddr)) { | |
881 | ||
882 | if (test_opt(sbi, LFS)) { | |
883 | f2fs_put_dnode(&dn); | |
884 | return -ENOTSUPP; | |
885 | } | |
886 | ||
6e2c64ad | 887 | /* do not invalidate this block address */ |
f28b3434 | 888 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 889 | *do_replace = 1; |
b4ace337 | 890 | } |
6e2c64ad | 891 | } |
0a2aa8fb JK |
892 | f2fs_put_dnode(&dn); |
893 | next: | |
894 | len -= done; | |
895 | off += done; | |
896 | if (len) | |
897 | goto next_dnode; | |
898 | return 0; | |
899 | } | |
b4ace337 | 900 | |
0a2aa8fb JK |
901 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
902 | int *do_replace, pgoff_t off, int len) | |
903 | { | |
904 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
905 | struct dnode_of_data dn; | |
906 | int ret, i; | |
b4ace337 | 907 | |
0a2aa8fb JK |
908 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
909 | if (*do_replace == 0) | |
910 | continue; | |
b4ace337 | 911 | |
0a2aa8fb JK |
912 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
913 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
914 | if (ret) { | |
915 | dec_valid_block_count(sbi, inode, 1); | |
916 | invalidate_blocks(sbi, *blkaddr); | |
917 | } else { | |
918 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 919 | } |
0a2aa8fb JK |
920 | f2fs_put_dnode(&dn); |
921 | } | |
922 | return 0; | |
923 | } | |
924 | ||
925 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
926 | block_t *blkaddr, int *do_replace, | |
927 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
928 | { | |
929 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
930 | pgoff_t i = 0; | |
931 | int ret; | |
36abef4e | 932 | |
0a2aa8fb JK |
933 | while (i < len) { |
934 | if (blkaddr[i] == NULL_ADDR && !full) { | |
935 | i++; | |
936 | continue; | |
6e2c64ad | 937 | } |
b4ace337 | 938 | |
0a2aa8fb JK |
939 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
940 | struct dnode_of_data dn; | |
941 | struct node_info ni; | |
942 | size_t new_size; | |
943 | pgoff_t ilen; | |
b4ace337 | 944 | |
0a2aa8fb JK |
945 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
946 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
947 | if (ret) | |
948 | return ret; | |
b4ace337 | 949 | |
0a2aa8fb JK |
950 | get_node_info(sbi, dn.nid, &ni); |
951 | ilen = min((pgoff_t) | |
952 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
953 | dn.ofs_in_node, len - i); | |
954 | do { | |
955 | dn.data_blkaddr = datablock_addr(dn.node_page, | |
956 | dn.ofs_in_node); | |
957 | truncate_data_blocks_range(&dn, 1); | |
958 | ||
959 | if (do_replace[i]) { | |
960 | f2fs_i_blocks_write(src_inode, | |
961 | 1, false); | |
962 | f2fs_i_blocks_write(dst_inode, | |
963 | 1, true); | |
964 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
965 | blkaddr[i], ni.version, true, false); | |
966 | ||
967 | do_replace[i] = 0; | |
968 | } | |
969 | dn.ofs_in_node++; | |
970 | i++; | |
971 | new_size = (dst + i) << PAGE_SHIFT; | |
972 | if (dst_inode->i_size < new_size) | |
973 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 974 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 975 | |
0a2aa8fb JK |
976 | f2fs_put_dnode(&dn); |
977 | } else { | |
978 | struct page *psrc, *pdst; | |
979 | ||
980 | psrc = get_lock_data_page(src_inode, src + i, true); | |
981 | if (IS_ERR(psrc)) | |
982 | return PTR_ERR(psrc); | |
983 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
984 | true); | |
985 | if (IS_ERR(pdst)) { | |
986 | f2fs_put_page(psrc, 1); | |
987 | return PTR_ERR(pdst); | |
988 | } | |
989 | f2fs_copy_page(psrc, pdst); | |
990 | set_page_dirty(pdst); | |
991 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 992 | f2fs_put_page(psrc, 1); |
b4ace337 | 993 | |
0a2aa8fb JK |
994 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
995 | if (ret) | |
996 | return ret; | |
997 | i++; | |
998 | } | |
6e2c64ad JK |
999 | } |
1000 | return 0; | |
0a2aa8fb | 1001 | } |
b4ace337 | 1002 | |
0a2aa8fb JK |
1003 | static int __exchange_data_block(struct inode *src_inode, |
1004 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1005 | pgoff_t len, bool full) |
0a2aa8fb JK |
1006 | { |
1007 | block_t *src_blkaddr; | |
1008 | int *do_replace; | |
363cad7f | 1009 | pgoff_t olen; |
0a2aa8fb JK |
1010 | int ret; |
1011 | ||
363cad7f JK |
1012 | while (len) { |
1013 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1014 | |
363cad7f JK |
1015 | src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
1016 | if (!src_blkaddr) | |
1017 | return -ENOMEM; | |
0a2aa8fb | 1018 | |
363cad7f JK |
1019 | do_replace = f2fs_kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
1020 | if (!do_replace) { | |
1021 | kvfree(src_blkaddr); | |
1022 | return -ENOMEM; | |
1023 | } | |
0a2aa8fb | 1024 | |
363cad7f JK |
1025 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1026 | do_replace, src, olen); | |
1027 | if (ret) | |
1028 | goto roll_back; | |
0a2aa8fb | 1029 | |
363cad7f JK |
1030 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1031 | do_replace, src, dst, olen, full); | |
1032 | if (ret) | |
1033 | goto roll_back; | |
1034 | ||
1035 | src += olen; | |
1036 | dst += olen; | |
1037 | len -= olen; | |
1038 | ||
1039 | kvfree(src_blkaddr); | |
1040 | kvfree(do_replace); | |
1041 | } | |
0a2aa8fb JK |
1042 | return 0; |
1043 | ||
1044 | roll_back: | |
1045 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1046 | kvfree(src_blkaddr); | |
1047 | kvfree(do_replace); | |
6e2c64ad JK |
1048 | return ret; |
1049 | } | |
b4ace337 | 1050 | |
6e2c64ad JK |
1051 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1052 | { | |
1053 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1054 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1055 | int ret; |
6e2c64ad | 1056 | |
0a2aa8fb JK |
1057 | f2fs_balance_fs(sbi, true); |
1058 | f2fs_lock_op(sbi); | |
5f281fab JK |
1059 | |
1060 | f2fs_drop_extent_tree(inode); | |
1061 | ||
0a2aa8fb JK |
1062 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1063 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1064 | return ret; |
1065 | } | |
1066 | ||
1067 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1068 | { | |
1069 | pgoff_t pg_start, pg_end; | |
1070 | loff_t new_size; | |
1071 | int ret; | |
1072 | ||
b4ace337 CY |
1073 | if (offset + len >= i_size_read(inode)) |
1074 | return -EINVAL; | |
1075 | ||
1076 | /* collapse range should be aligned to block size of f2fs. */ | |
1077 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1078 | return -EINVAL; | |
1079 | ||
b9d777b8 JK |
1080 | ret = f2fs_convert_inline_inode(inode); |
1081 | if (ret) | |
1082 | return ret; | |
97a7b2c2 | 1083 | |
09cbfeaf KS |
1084 | pg_start = offset >> PAGE_SHIFT; |
1085 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 CY |
1086 | |
1087 | /* write out all dirty pages from offset */ | |
1088 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1089 | if (ret) | |
1090 | return ret; | |
1091 | ||
1092 | truncate_pagecache(inode, offset); | |
1093 | ||
1094 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1095 | if (ret) | |
1096 | return ret; | |
1097 | ||
6e2c64ad JK |
1098 | /* write out all moved pages, if possible */ |
1099 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1100 | truncate_pagecache(inode, offset); | |
1101 | ||
b4ace337 | 1102 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1103 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1104 | |
1105 | ret = truncate_blocks(inode, new_size, true); | |
1106 | if (!ret) | |
fc9581c8 | 1107 | f2fs_i_size_write(inode, new_size); |
b4ace337 CY |
1108 | |
1109 | return ret; | |
1110 | } | |
1111 | ||
6e961949 CY |
1112 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1113 | pgoff_t end) | |
1114 | { | |
1115 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1116 | pgoff_t index = start; | |
1117 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1118 | blkcnt_t count = 0; | |
1119 | int ret; | |
1120 | ||
1121 | for (; index < end; index++, dn->ofs_in_node++) { | |
1122 | if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR) | |
1123 | count++; | |
1124 | } | |
1125 | ||
1126 | dn->ofs_in_node = ofs_in_node; | |
1127 | ret = reserve_new_blocks(dn, count); | |
1128 | if (ret) | |
1129 | return ret; | |
1130 | ||
1131 | dn->ofs_in_node = ofs_in_node; | |
1132 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
1133 | dn->data_blkaddr = | |
1134 | datablock_addr(dn->node_page, dn->ofs_in_node); | |
1135 | /* | |
1136 | * reserve_new_blocks will not guarantee entire block | |
1137 | * allocation. | |
1138 | */ | |
1139 | if (dn->data_blkaddr == NULL_ADDR) { | |
1140 | ret = -ENOSPC; | |
1141 | break; | |
1142 | } | |
1143 | if (dn->data_blkaddr != NEW_ADDR) { | |
1144 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1145 | dn->data_blkaddr = NEW_ADDR; | |
1146 | set_data_blkaddr(dn); | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1151 | ||
1152 | return ret; | |
1153 | } | |
1154 | ||
75cd4e09 CY |
1155 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1156 | int mode) | |
1157 | { | |
1158 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1159 | struct address_space *mapping = inode->i_mapping; | |
1160 | pgoff_t index, pg_start, pg_end; | |
1161 | loff_t new_size = i_size_read(inode); | |
1162 | loff_t off_start, off_end; | |
1163 | int ret = 0; | |
1164 | ||
75cd4e09 CY |
1165 | ret = inode_newsize_ok(inode, (len + offset)); |
1166 | if (ret) | |
1167 | return ret; | |
1168 | ||
b9d777b8 JK |
1169 | ret = f2fs_convert_inline_inode(inode); |
1170 | if (ret) | |
1171 | return ret; | |
75cd4e09 CY |
1172 | |
1173 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1174 | if (ret) | |
1175 | return ret; | |
1176 | ||
1177 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1178 | ||
09cbfeaf KS |
1179 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1180 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1181 | |
09cbfeaf KS |
1182 | off_start = offset & (PAGE_SIZE - 1); |
1183 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1184 | |
1185 | if (pg_start == pg_end) { | |
6394328a CY |
1186 | ret = fill_zero(inode, pg_start, off_start, |
1187 | off_end - off_start); | |
1188 | if (ret) | |
1189 | return ret; | |
1190 | ||
75cd4e09 CY |
1191 | if (offset + len > new_size) |
1192 | new_size = offset + len; | |
1193 | new_size = max_t(loff_t, new_size, offset + len); | |
1194 | } else { | |
1195 | if (off_start) { | |
6394328a | 1196 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1197 | PAGE_SIZE - off_start); |
6394328a CY |
1198 | if (ret) |
1199 | return ret; | |
1200 | ||
75cd4e09 | 1201 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1202 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1203 | } |
1204 | ||
6e961949 | 1205 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1206 | struct dnode_of_data dn; |
6e961949 CY |
1207 | unsigned int end_offset; |
1208 | pgoff_t end; | |
75cd4e09 CY |
1209 | |
1210 | f2fs_lock_op(sbi); | |
1211 | ||
6e961949 CY |
1212 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1213 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1214 | if (ret) { |
1215 | f2fs_unlock_op(sbi); | |
1216 | goto out; | |
1217 | } | |
1218 | ||
6e961949 CY |
1219 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1220 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1221 | ||
1222 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1223 | f2fs_put_dnode(&dn); |
1224 | f2fs_unlock_op(sbi); | |
9434fcde CY |
1225 | |
1226 | f2fs_balance_fs(sbi, dn.node_changed); | |
1227 | ||
6e961949 CY |
1228 | if (ret) |
1229 | goto out; | |
75cd4e09 | 1230 | |
6e961949 | 1231 | index = end; |
75cd4e09 | 1232 | new_size = max_t(loff_t, new_size, |
6e961949 | 1233 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1234 | } |
1235 | ||
1236 | if (off_end) { | |
6394328a CY |
1237 | ret = fill_zero(inode, pg_end, 0, off_end); |
1238 | if (ret) | |
1239 | goto out; | |
1240 | ||
75cd4e09 CY |
1241 | new_size = max_t(loff_t, new_size, offset + len); |
1242 | } | |
1243 | } | |
1244 | ||
1245 | out: | |
ee6d182f | 1246 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1247 | f2fs_i_size_write(inode, new_size); |
75cd4e09 CY |
1248 | |
1249 | return ret; | |
1250 | } | |
1251 | ||
f62185d0 CY |
1252 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1253 | { | |
1254 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1255 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1256 | loff_t new_size; |
6e2c64ad | 1257 | int ret = 0; |
f62185d0 | 1258 | |
f62185d0 CY |
1259 | new_size = i_size_read(inode) + len; |
1260 | if (new_size > inode->i_sb->s_maxbytes) | |
1261 | return -EFBIG; | |
1262 | ||
1263 | if (offset >= i_size_read(inode)) | |
1264 | return -EINVAL; | |
1265 | ||
1266 | /* insert range should be aligned to block size of f2fs. */ | |
1267 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1268 | return -EINVAL; | |
1269 | ||
b9d777b8 JK |
1270 | ret = f2fs_convert_inline_inode(inode); |
1271 | if (ret) | |
1272 | return ret; | |
97a7b2c2 | 1273 | |
2c4db1a6 | 1274 | f2fs_balance_fs(sbi, true); |
2a340760 | 1275 | |
f62185d0 CY |
1276 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1277 | if (ret) | |
1278 | return ret; | |
1279 | ||
1280 | /* write out all dirty pages from offset */ | |
1281 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1282 | if (ret) | |
1283 | return ret; | |
1284 | ||
1285 | truncate_pagecache(inode, offset); | |
1286 | ||
09cbfeaf KS |
1287 | pg_start = offset >> PAGE_SHIFT; |
1288 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1289 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1290 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1291 | ||
1292 | while (!ret && idx > pg_start) { | |
1293 | nr = idx - pg_start; | |
1294 | if (nr > delta) | |
1295 | nr = delta; | |
1296 | idx -= nr; | |
f62185d0 | 1297 | |
f62185d0 | 1298 | f2fs_lock_op(sbi); |
5f281fab JK |
1299 | f2fs_drop_extent_tree(inode); |
1300 | ||
0a2aa8fb JK |
1301 | ret = __exchange_data_block(inode, inode, idx, |
1302 | idx + delta, nr, false); | |
f62185d0 CY |
1303 | f2fs_unlock_op(sbi); |
1304 | } | |
1305 | ||
6e2c64ad JK |
1306 | /* write out all moved pages, if possible */ |
1307 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1308 | truncate_pagecache(inode, offset); | |
1309 | ||
1310 | if (!ret) | |
fc9581c8 | 1311 | f2fs_i_size_write(inode, new_size); |
f62185d0 CY |
1312 | return ret; |
1313 | } | |
1314 | ||
fbfa2cc5 JK |
1315 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1316 | loff_t len, int mode) | |
1317 | { | |
4081363f | 1318 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1319 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1320 | pgoff_t pg_end; | |
fbfa2cc5 | 1321 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1322 | loff_t off_end; |
a7de6086 | 1323 | int err; |
fbfa2cc5 | 1324 | |
a7de6086 JK |
1325 | err = inode_newsize_ok(inode, (len + offset)); |
1326 | if (err) | |
1327 | return err; | |
fbfa2cc5 | 1328 | |
a7de6086 JK |
1329 | err = f2fs_convert_inline_inode(inode); |
1330 | if (err) | |
1331 | return err; | |
9e09fc85 | 1332 | |
2c4db1a6 | 1333 | f2fs_balance_fs(sbi, true); |
2a340760 | 1334 | |
e12dd7bd | 1335 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1336 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1337 | |
e12dd7bd JK |
1338 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1339 | map.m_len = pg_end - map.m_lblk; | |
1340 | if (off_end) | |
1341 | map.m_len++; | |
ead43275 | 1342 | |
a7de6086 JK |
1343 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1344 | if (err) { | |
e12dd7bd | 1345 | pgoff_t last_off; |
fbfa2cc5 | 1346 | |
e12dd7bd | 1347 | if (!map.m_len) |
a7de6086 | 1348 | return err; |
98397ff3 | 1349 | |
e12dd7bd JK |
1350 | last_off = map.m_lblk + map.m_len - 1; |
1351 | ||
1352 | /* update new size to the failed position */ | |
1353 | new_size = (last_off == pg_end) ? offset + len: | |
1354 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1355 | } else { | |
1356 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1357 | } |
1358 | ||
ee6d182f | 1359 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1360 | f2fs_i_size_write(inode, new_size); |
fbfa2cc5 | 1361 | |
a7de6086 | 1362 | return err; |
fbfa2cc5 JK |
1363 | } |
1364 | ||
1365 | static long f2fs_fallocate(struct file *file, int mode, | |
1366 | loff_t offset, loff_t len) | |
1367 | { | |
6131ffaa | 1368 | struct inode *inode = file_inode(file); |
587c0a42 | 1369 | long ret = 0; |
fbfa2cc5 | 1370 | |
c998012b CY |
1371 | /* f2fs only support ->fallocate for regular file */ |
1372 | if (!S_ISREG(inode->i_mode)) | |
1373 | return -EINVAL; | |
1374 | ||
f62185d0 CY |
1375 | if (f2fs_encrypted_inode(inode) && |
1376 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1377 | return -EOPNOTSUPP; |
1378 | ||
b4ace337 | 1379 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1380 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1381 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1382 | return -EOPNOTSUPP; |
1383 | ||
5955102c | 1384 | inode_lock(inode); |
3375f696 | 1385 | |
587c0a42 TY |
1386 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1387 | if (offset >= inode->i_size) | |
1388 | goto out; | |
1389 | ||
a66c7b2f | 1390 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1391 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1392 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1393 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1394 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1395 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1396 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1397 | } else { |
fbfa2cc5 | 1398 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1399 | } |
fbfa2cc5 | 1400 | |
3af60a49 | 1401 | if (!ret) { |
078cd827 | 1402 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1403 | f2fs_mark_inode_dirty_sync(inode, false); |
26787236 JK |
1404 | if (mode & FALLOC_FL_KEEP_SIZE) |
1405 | file_set_keep_isize(inode); | |
d0239e1b | 1406 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1407 | } |
3375f696 | 1408 | |
587c0a42 | 1409 | out: |
5955102c | 1410 | inode_unlock(inode); |
3375f696 | 1411 | |
c01e2853 | 1412 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1413 | return ret; |
1414 | } | |
1415 | ||
1e84371f JK |
1416 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1417 | { | |
de5307e4 JK |
1418 | /* |
1419 | * f2fs_relase_file is called at every close calls. So we should | |
1420 | * not drop any inmemory pages by close called by other process. | |
1421 | */ | |
1422 | if (!(filp->f_mode & FMODE_WRITE) || | |
1423 | atomic_read(&inode->i_writecount) != 1) | |
1424 | return 0; | |
1425 | ||
1e84371f JK |
1426 | /* some remained atomic pages should discarded */ |
1427 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1428 | drop_inmem_pages(inode); |
1e84371f | 1429 | if (f2fs_is_volatile_file(inode)) { |
91942321 JK |
1430 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1431 | set_inode_flag(inode, FI_DROP_CACHE); | |
1e84371f | 1432 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1433 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1434 | } |
1435 | return 0; | |
1436 | } | |
1437 | ||
fbfa2cc5 JK |
1438 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1439 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1440 | ||
1441 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1442 | { | |
1443 | if (S_ISDIR(mode)) | |
1444 | return flags; | |
1445 | else if (S_ISREG(mode)) | |
1446 | return flags & F2FS_REG_FLMASK; | |
1447 | else | |
1448 | return flags & F2FS_OTHER_FLMASK; | |
1449 | } | |
1450 | ||
52656e6c | 1451 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1452 | { |
6131ffaa | 1453 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1454 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1455 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1456 | return put_user(flags, (int __user *)arg); | |
1457 | } | |
fbfa2cc5 | 1458 | |
52656e6c JK |
1459 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1460 | { | |
1461 | struct inode *inode = file_inode(filp); | |
1462 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
69494229 | 1463 | unsigned int flags; |
52656e6c JK |
1464 | unsigned int oldflags; |
1465 | int ret; | |
fbfa2cc5 | 1466 | |
7fb17fe4 CY |
1467 | if (!inode_owner_or_capable(inode)) |
1468 | return -EACCES; | |
1469 | ||
1470 | if (get_user(flags, (int __user *)arg)) | |
1471 | return -EFAULT; | |
1472 | ||
52656e6c JK |
1473 | ret = mnt_want_write_file(filp); |
1474 | if (ret) | |
1475 | return ret; | |
fbfa2cc5 | 1476 | |
52656e6c | 1477 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1478 | |
5955102c | 1479 | inode_lock(inode); |
fbfa2cc5 | 1480 | |
52656e6c | 1481 | oldflags = fi->i_flags; |
fbfa2cc5 | 1482 | |
52656e6c JK |
1483 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1484 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1485 | inode_unlock(inode); |
52656e6c JK |
1486 | ret = -EPERM; |
1487 | goto out; | |
fbfa2cc5 | 1488 | } |
52656e6c | 1489 | } |
fbfa2cc5 | 1490 | |
52656e6c JK |
1491 | flags = flags & FS_FL_USER_MODIFIABLE; |
1492 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1493 | fi->i_flags = flags; | |
5955102c | 1494 | inode_unlock(inode); |
fbfa2cc5 | 1495 | |
078cd827 | 1496 | inode->i_ctime = current_time(inode); |
205b9822 | 1497 | f2fs_set_inode_flags(inode); |
fbfa2cc5 | 1498 | out: |
52656e6c JK |
1499 | mnt_drop_write_file(filp); |
1500 | return ret; | |
1501 | } | |
4b2fecc8 | 1502 | |
d49f3e89 CY |
1503 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1504 | { | |
1505 | struct inode *inode = file_inode(filp); | |
1506 | ||
1507 | return put_user(inode->i_generation, (int __user *)arg); | |
1508 | } | |
1509 | ||
88b88a66 JK |
1510 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1511 | { | |
1512 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1513 | int ret; |
88b88a66 JK |
1514 | |
1515 | if (!inode_owner_or_capable(inode)) | |
1516 | return -EACCES; | |
1517 | ||
7fb17fe4 CY |
1518 | ret = mnt_want_write_file(filp); |
1519 | if (ret) | |
1520 | return ret; | |
1521 | ||
0fac558b CY |
1522 | inode_lock(inode); |
1523 | ||
1e84371f | 1524 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1525 | goto out; |
88b88a66 | 1526 | |
f4c9c743 CY |
1527 | ret = f2fs_convert_inline_inode(inode); |
1528 | if (ret) | |
7fb17fe4 | 1529 | goto out; |
88b88a66 | 1530 | |
91942321 | 1531 | set_inode_flag(inode, FI_ATOMIC_FILE); |
d0239e1b JK |
1532 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1533 | ||
c27753d6 | 1534 | if (!get_dirty_pages(inode)) |
7fb17fe4 | 1535 | goto out; |
c27753d6 JK |
1536 | |
1537 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1538 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1539 | inode->i_ino, get_dirty_pages(inode)); |
1540 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
1541 | if (ret) | |
91942321 | 1542 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
7fb17fe4 | 1543 | out: |
26a28a0c JK |
1544 | stat_inc_atomic_write(inode); |
1545 | stat_update_max_atomic_write(inode); | |
0fac558b | 1546 | inode_unlock(inode); |
7fb17fe4 | 1547 | mnt_drop_write_file(filp); |
c27753d6 | 1548 | return ret; |
88b88a66 JK |
1549 | } |
1550 | ||
1551 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1552 | { | |
1553 | struct inode *inode = file_inode(filp); | |
1554 | int ret; | |
1555 | ||
1556 | if (!inode_owner_or_capable(inode)) | |
1557 | return -EACCES; | |
1558 | ||
1559 | ret = mnt_want_write_file(filp); | |
1560 | if (ret) | |
1561 | return ret; | |
1562 | ||
0fac558b CY |
1563 | inode_lock(inode); |
1564 | ||
7fb17fe4 CY |
1565 | if (f2fs_is_volatile_file(inode)) |
1566 | goto err_out; | |
1567 | ||
6282adbf | 1568 | if (f2fs_is_atomic_file(inode)) { |
29b96b54 | 1569 | ret = commit_inmem_pages(inode); |
5fe45743 | 1570 | if (ret) |
edb27dee | 1571 | goto err_out; |
5fe45743 | 1572 | |
26a28a0c | 1573 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1574 | if (!ret) { |
1575 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
1576 | stat_dec_atomic_write(inode); | |
447135a8 | 1577 | } |
26a28a0c JK |
1578 | } else { |
1579 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); | |
6282adbf | 1580 | } |
edb27dee | 1581 | err_out: |
0fac558b | 1582 | inode_unlock(inode); |
88b88a66 JK |
1583 | mnt_drop_write_file(filp); |
1584 | return ret; | |
1585 | } | |
1586 | ||
02a1335f JK |
1587 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1588 | { | |
1589 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1590 | int ret; |
02a1335f JK |
1591 | |
1592 | if (!inode_owner_or_capable(inode)) | |
1593 | return -EACCES; | |
1594 | ||
7fb17fe4 CY |
1595 | ret = mnt_want_write_file(filp); |
1596 | if (ret) | |
1597 | return ret; | |
1598 | ||
0fac558b CY |
1599 | inode_lock(inode); |
1600 | ||
1e84371f | 1601 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1602 | goto out; |
1e84371f | 1603 | |
f4c9c743 CY |
1604 | ret = f2fs_convert_inline_inode(inode); |
1605 | if (ret) | |
7fb17fe4 | 1606 | goto out; |
b3d208f9 | 1607 | |
91942321 | 1608 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1609 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1610 | out: |
0fac558b | 1611 | inode_unlock(inode); |
7fb17fe4 CY |
1612 | mnt_drop_write_file(filp); |
1613 | return ret; | |
02a1335f JK |
1614 | } |
1615 | ||
1e84371f JK |
1616 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1617 | { | |
1618 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1619 | int ret; |
1e84371f JK |
1620 | |
1621 | if (!inode_owner_or_capable(inode)) | |
1622 | return -EACCES; | |
1623 | ||
7fb17fe4 CY |
1624 | ret = mnt_want_write_file(filp); |
1625 | if (ret) | |
1626 | return ret; | |
1627 | ||
0fac558b CY |
1628 | inode_lock(inode); |
1629 | ||
1e84371f | 1630 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1631 | goto out; |
1e84371f | 1632 | |
7fb17fe4 CY |
1633 | if (!f2fs_is_first_block_written(inode)) { |
1634 | ret = truncate_partial_data_page(inode, 0, true); | |
1635 | goto out; | |
1636 | } | |
3c6c2beb | 1637 | |
7fb17fe4 CY |
1638 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1639 | out: | |
0fac558b | 1640 | inode_unlock(inode); |
7fb17fe4 CY |
1641 | mnt_drop_write_file(filp); |
1642 | return ret; | |
1e84371f JK |
1643 | } |
1644 | ||
1645 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1646 | { | |
1647 | struct inode *inode = file_inode(filp); | |
1648 | int ret; | |
1649 | ||
1650 | if (!inode_owner_or_capable(inode)) | |
1651 | return -EACCES; | |
1652 | ||
1653 | ret = mnt_want_write_file(filp); | |
1654 | if (ret) | |
1655 | return ret; | |
1656 | ||
0fac558b CY |
1657 | inode_lock(inode); |
1658 | ||
26dc3d44 | 1659 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1660 | drop_inmem_pages(inode); |
732d5648 | 1661 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1662 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
608514de | 1663 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1664 | } |
de6a8ec9 | 1665 | |
0fac558b CY |
1666 | inode_unlock(inode); |
1667 | ||
1e84371f | 1668 | mnt_drop_write_file(filp); |
d0239e1b | 1669 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1670 | return ret; |
1671 | } | |
1672 | ||
1abff93d JK |
1673 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1674 | { | |
1675 | struct inode *inode = file_inode(filp); | |
1676 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1677 | struct super_block *sb = sbi->sb; | |
1678 | __u32 in; | |
7fb17fe4 | 1679 | int ret; |
1abff93d JK |
1680 | |
1681 | if (!capable(CAP_SYS_ADMIN)) | |
1682 | return -EPERM; | |
1683 | ||
1684 | if (get_user(in, (__u32 __user *)arg)) | |
1685 | return -EFAULT; | |
1686 | ||
7fb17fe4 CY |
1687 | ret = mnt_want_write_file(filp); |
1688 | if (ret) | |
1689 | return ret; | |
1690 | ||
1abff93d JK |
1691 | switch (in) { |
1692 | case F2FS_GOING_DOWN_FULLSYNC: | |
1693 | sb = freeze_bdev(sb->s_bdev); | |
1694 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1695 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1696 | thaw_bdev(sb->s_bdev, sb); |
1697 | } | |
1698 | break; | |
1699 | case F2FS_GOING_DOWN_METASYNC: | |
1700 | /* do checkpoint only */ | |
1701 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1702 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1703 | break; |
1704 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1705 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1706 | break; |
c912a829 JK |
1707 | case F2FS_GOING_DOWN_METAFLUSH: |
1708 | sync_meta_pages(sbi, META, LONG_MAX); | |
38f91ca8 | 1709 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1710 | break; |
1abff93d | 1711 | default: |
7fb17fe4 CY |
1712 | ret = -EINVAL; |
1713 | goto out; | |
1abff93d | 1714 | } |
d0239e1b | 1715 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1716 | out: |
1717 | mnt_drop_write_file(filp); | |
1718 | return ret; | |
1abff93d JK |
1719 | } |
1720 | ||
52656e6c JK |
1721 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1722 | { | |
1723 | struct inode *inode = file_inode(filp); | |
1724 | struct super_block *sb = inode->i_sb; | |
1725 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1726 | struct fstrim_range range; | |
1727 | int ret; | |
4b2fecc8 | 1728 | |
52656e6c JK |
1729 | if (!capable(CAP_SYS_ADMIN)) |
1730 | return -EPERM; | |
4b2fecc8 | 1731 | |
52656e6c JK |
1732 | if (!blk_queue_discard(q)) |
1733 | return -EOPNOTSUPP; | |
4b2fecc8 | 1734 | |
52656e6c JK |
1735 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1736 | sizeof(range))) | |
1737 | return -EFAULT; | |
4b2fecc8 | 1738 | |
7fb17fe4 CY |
1739 | ret = mnt_want_write_file(filp); |
1740 | if (ret) | |
1741 | return ret; | |
1742 | ||
52656e6c JK |
1743 | range.minlen = max((unsigned int)range.minlen, |
1744 | q->limits.discard_granularity); | |
1745 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1746 | mnt_drop_write_file(filp); |
52656e6c JK |
1747 | if (ret < 0) |
1748 | return ret; | |
4b2fecc8 | 1749 | |
52656e6c JK |
1750 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1751 | sizeof(range))) | |
1752 | return -EFAULT; | |
d0239e1b | 1753 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1754 | return 0; |
1755 | } | |
1756 | ||
f424f664 JK |
1757 | static bool uuid_is_nonzero(__u8 u[16]) |
1758 | { | |
1759 | int i; | |
1760 | ||
1761 | for (i = 0; i < 16; i++) | |
1762 | if (u[i]) | |
1763 | return true; | |
1764 | return false; | |
1765 | } | |
1766 | ||
1767 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1768 | { | |
f424f664 JK |
1769 | struct inode *inode = file_inode(filp); |
1770 | ||
d0239e1b | 1771 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1772 | |
db717d8e | 1773 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
1774 | } |
1775 | ||
1776 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1777 | { | |
db717d8e | 1778 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
1779 | } |
1780 | ||
1781 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1782 | { | |
1783 | struct inode *inode = file_inode(filp); | |
1784 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1785 | int err; | |
1786 | ||
1787 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1788 | return -EOPNOTSUPP; | |
1789 | ||
1790 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1791 | goto got_it; | |
1792 | ||
1793 | err = mnt_want_write_file(filp); | |
1794 | if (err) | |
1795 | return err; | |
1796 | ||
1797 | /* update superblock with uuid */ | |
1798 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1799 | ||
c5bda1c8 | 1800 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1801 | if (err) { |
1802 | /* undo new data */ | |
1803 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1804 | mnt_drop_write_file(filp); |
f424f664 JK |
1805 | return err; |
1806 | } | |
e8240f65 | 1807 | mnt_drop_write_file(filp); |
f424f664 JK |
1808 | got_it: |
1809 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1810 | 16)) | |
1811 | return -EFAULT; | |
1812 | return 0; | |
1813 | } | |
1814 | ||
c1c1b583 CY |
1815 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1816 | { | |
1817 | struct inode *inode = file_inode(filp); | |
1818 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1819 | __u32 sync; |
7fb17fe4 | 1820 | int ret; |
c1c1b583 CY |
1821 | |
1822 | if (!capable(CAP_SYS_ADMIN)) | |
1823 | return -EPERM; | |
1824 | ||
d530d4d8 | 1825 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1826 | return -EFAULT; |
1827 | ||
d530d4d8 CY |
1828 | if (f2fs_readonly(sbi->sb)) |
1829 | return -EROFS; | |
c1c1b583 | 1830 | |
7fb17fe4 CY |
1831 | ret = mnt_want_write_file(filp); |
1832 | if (ret) | |
1833 | return ret; | |
1834 | ||
d530d4d8 | 1835 | if (!sync) { |
7fb17fe4 CY |
1836 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1837 | ret = -EBUSY; | |
1838 | goto out; | |
1839 | } | |
d530d4d8 CY |
1840 | } else { |
1841 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1842 | } |
1843 | ||
7702bdbe | 1844 | ret = f2fs_gc(sbi, sync, true); |
7fb17fe4 CY |
1845 | out: |
1846 | mnt_drop_write_file(filp); | |
1847 | return ret; | |
c1c1b583 CY |
1848 | } |
1849 | ||
456b88e4 CY |
1850 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1851 | { | |
1852 | struct inode *inode = file_inode(filp); | |
1853 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 1854 | int ret; |
456b88e4 CY |
1855 | |
1856 | if (!capable(CAP_SYS_ADMIN)) | |
1857 | return -EPERM; | |
1858 | ||
1859 | if (f2fs_readonly(sbi->sb)) | |
1860 | return -EROFS; | |
1861 | ||
7fb17fe4 CY |
1862 | ret = mnt_want_write_file(filp); |
1863 | if (ret) | |
1864 | return ret; | |
1865 | ||
1866 | ret = f2fs_sync_fs(sbi->sb, 1); | |
1867 | ||
1868 | mnt_drop_write_file(filp); | |
1869 | return ret; | |
456b88e4 CY |
1870 | } |
1871 | ||
d323d005 CY |
1872 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1873 | struct file *filp, | |
1874 | struct f2fs_defragment *range) | |
1875 | { | |
1876 | struct inode *inode = file_inode(filp); | |
da85985c | 1877 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
e15882b6 | 1878 | struct extent_info ei = {0,0,0}; |
d323d005 | 1879 | pgoff_t pg_start, pg_end; |
3519e3f9 | 1880 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1881 | unsigned int total = 0, sec_num; |
3519e3f9 | 1882 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
d323d005 CY |
1883 | block_t blk_end = 0; |
1884 | bool fragmented = false; | |
1885 | int err; | |
1886 | ||
1887 | /* if in-place-update policy is enabled, don't waste time here */ | |
1888 | if (need_inplace_update(inode)) | |
1889 | return -EINVAL; | |
1890 | ||
09cbfeaf KS |
1891 | pg_start = range->start >> PAGE_SHIFT; |
1892 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 1893 | |
2c4db1a6 | 1894 | f2fs_balance_fs(sbi, true); |
d323d005 | 1895 | |
5955102c | 1896 | inode_lock(inode); |
d323d005 CY |
1897 | |
1898 | /* writeback all dirty pages in the range */ | |
1899 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1900 | range->start + range->len - 1); |
d323d005 CY |
1901 | if (err) |
1902 | goto out; | |
1903 | ||
1904 | /* | |
1905 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1906 | * block addresses are continuous. | |
1907 | */ | |
1908 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1909 | if (ei.fofs + ei.len >= pg_end) | |
1910 | goto out; | |
1911 | } | |
1912 | ||
1913 | map.m_lblk = pg_start; | |
d323d005 CY |
1914 | |
1915 | /* | |
1916 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1917 | * physical block addresses are continuous even if there are hole(s) | |
1918 | * in logical blocks. | |
1919 | */ | |
1920 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1921 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1922 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1923 | if (err) | |
1924 | goto out; | |
1925 | ||
1926 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1927 | map.m_lblk++; | |
d323d005 CY |
1928 | continue; |
1929 | } | |
1930 | ||
1931 | if (blk_end && blk_end != map.m_pblk) { | |
1932 | fragmented = true; | |
1933 | break; | |
1934 | } | |
1935 | blk_end = map.m_pblk + map.m_len; | |
1936 | ||
1937 | map.m_lblk += map.m_len; | |
d323d005 CY |
1938 | } |
1939 | ||
1940 | if (!fragmented) | |
1941 | goto out; | |
1942 | ||
1943 | map.m_lblk = pg_start; | |
1944 | map.m_len = pg_end - pg_start; | |
1945 | ||
1946 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; | |
1947 | ||
1948 | /* | |
1949 | * make sure there are enough free section for LFS allocation, this can | |
1950 | * avoid defragment running in SSR mode when free section are allocated | |
1951 | * intensively | |
1952 | */ | |
7f3037a5 | 1953 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
1954 | err = -EAGAIN; |
1955 | goto out; | |
1956 | } | |
1957 | ||
1958 | while (map.m_lblk < pg_end) { | |
1959 | pgoff_t idx; | |
1960 | int cnt = 0; | |
1961 | ||
1962 | do_map: | |
a1c1e9b7 | 1963 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1964 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1965 | if (err) | |
1966 | goto clear_out; | |
1967 | ||
1968 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1969 | map.m_lblk++; | |
1970 | continue; | |
1971 | } | |
1972 | ||
91942321 | 1973 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1974 | |
1975 | idx = map.m_lblk; | |
1976 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
1977 | struct page *page; | |
1978 | ||
1979 | page = get_lock_data_page(inode, idx, true); | |
1980 | if (IS_ERR(page)) { | |
1981 | err = PTR_ERR(page); | |
1982 | goto clear_out; | |
1983 | } | |
1984 | ||
1985 | set_page_dirty(page); | |
1986 | f2fs_put_page(page, 1); | |
1987 | ||
1988 | idx++; | |
1989 | cnt++; | |
1990 | total++; | |
1991 | } | |
1992 | ||
1993 | map.m_lblk = idx; | |
d323d005 CY |
1994 | |
1995 | if (idx < pg_end && cnt < blk_per_seg) | |
1996 | goto do_map; | |
1997 | ||
91942321 | 1998 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1999 | |
2000 | err = filemap_fdatawrite(inode->i_mapping); | |
2001 | if (err) | |
2002 | goto out; | |
2003 | } | |
2004 | clear_out: | |
91942321 | 2005 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2006 | out: |
5955102c | 2007 | inode_unlock(inode); |
d323d005 | 2008 | if (!err) |
09cbfeaf | 2009 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2010 | return err; |
2011 | } | |
2012 | ||
2013 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2014 | { | |
2015 | struct inode *inode = file_inode(filp); | |
2016 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2017 | struct f2fs_defragment range; | |
2018 | int err; | |
2019 | ||
2020 | if (!capable(CAP_SYS_ADMIN)) | |
2021 | return -EPERM; | |
2022 | ||
2023 | if (!S_ISREG(inode->i_mode)) | |
2024 | return -EINVAL; | |
2025 | ||
2026 | err = mnt_want_write_file(filp); | |
2027 | if (err) | |
2028 | return err; | |
2029 | ||
2030 | if (f2fs_readonly(sbi->sb)) { | |
2031 | err = -EROFS; | |
2032 | goto out; | |
2033 | } | |
2034 | ||
2035 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
2036 | sizeof(range))) { | |
2037 | err = -EFAULT; | |
2038 | goto out; | |
2039 | } | |
2040 | ||
2041 | /* verify alignment of offset & size */ | |
2042 | if (range.start & (F2FS_BLKSIZE - 1) || | |
2043 | range.len & (F2FS_BLKSIZE - 1)) { | |
2044 | err = -EINVAL; | |
2045 | goto out; | |
2046 | } | |
2047 | ||
2048 | err = f2fs_defragment_range(sbi, filp, &range); | |
d0239e1b | 2049 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 CY |
2050 | if (err < 0) |
2051 | goto out; | |
2052 | ||
2053 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2054 | sizeof(range))) | |
2055 | err = -EFAULT; | |
2056 | out: | |
2057 | mnt_drop_write_file(filp); | |
2058 | return err; | |
2059 | } | |
2060 | ||
4dd6f977 JK |
2061 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2062 | struct file *file_out, loff_t pos_out, size_t len) | |
2063 | { | |
2064 | struct inode *src = file_inode(file_in); | |
2065 | struct inode *dst = file_inode(file_out); | |
2066 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2067 | size_t olen = len, dst_max_i_size = 0; | |
2068 | size_t dst_osize; | |
2069 | int ret; | |
2070 | ||
2071 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2072 | src->i_sb != dst->i_sb) | |
2073 | return -EXDEV; | |
2074 | ||
2075 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2076 | return -EROFS; | |
2077 | ||
fe8494bf CY |
2078 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2079 | return -EINVAL; | |
4dd6f977 JK |
2080 | |
2081 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2082 | return -EOPNOTSUPP; | |
2083 | ||
d95fd91c FL |
2084 | if (src == dst) { |
2085 | if (pos_in == pos_out) | |
2086 | return 0; | |
2087 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2088 | return -EINVAL; | |
2089 | } | |
2090 | ||
4dd6f977 | 2091 | inode_lock(src); |
20a3d61d CY |
2092 | if (src != dst) { |
2093 | if (!inode_trylock(dst)) { | |
2094 | ret = -EBUSY; | |
2095 | goto out; | |
2096 | } | |
2097 | } | |
4dd6f977 JK |
2098 | |
2099 | ret = -EINVAL; | |
2100 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2101 | goto out_unlock; | |
2102 | if (len == 0) | |
2103 | olen = len = src->i_size - pos_in; | |
2104 | if (pos_in + len == src->i_size) | |
2105 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2106 | if (len == 0) { | |
2107 | ret = 0; | |
2108 | goto out_unlock; | |
2109 | } | |
2110 | ||
2111 | dst_osize = dst->i_size; | |
2112 | if (pos_out + olen > dst->i_size) | |
2113 | dst_max_i_size = pos_out + olen; | |
2114 | ||
2115 | /* verify the end result is block aligned */ | |
2116 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2117 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2118 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2119 | goto out_unlock; | |
2120 | ||
2121 | ret = f2fs_convert_inline_inode(src); | |
2122 | if (ret) | |
2123 | goto out_unlock; | |
2124 | ||
2125 | ret = f2fs_convert_inline_inode(dst); | |
2126 | if (ret) | |
2127 | goto out_unlock; | |
2128 | ||
2129 | /* write out all dirty pages from offset */ | |
2130 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2131 | pos_in, pos_in + len); | |
2132 | if (ret) | |
2133 | goto out_unlock; | |
2134 | ||
2135 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2136 | pos_out, pos_out + len); | |
2137 | if (ret) | |
2138 | goto out_unlock; | |
2139 | ||
2140 | f2fs_balance_fs(sbi, true); | |
2141 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2142 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2143 | pos_out >> F2FS_BLKSIZE_BITS, | |
2144 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2145 | |
2146 | if (!ret) { | |
2147 | if (dst_max_i_size) | |
2148 | f2fs_i_size_write(dst, dst_max_i_size); | |
2149 | else if (dst_osize != dst->i_size) | |
2150 | f2fs_i_size_write(dst, dst_osize); | |
2151 | } | |
2152 | f2fs_unlock_op(sbi); | |
2153 | out_unlock: | |
2154 | if (src != dst) | |
2155 | inode_unlock(dst); | |
20a3d61d | 2156 | out: |
4dd6f977 JK |
2157 | inode_unlock(src); |
2158 | return ret; | |
2159 | } | |
2160 | ||
2161 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2162 | { | |
2163 | struct f2fs_move_range range; | |
2164 | struct fd dst; | |
2165 | int err; | |
2166 | ||
2167 | if (!(filp->f_mode & FMODE_READ) || | |
2168 | !(filp->f_mode & FMODE_WRITE)) | |
2169 | return -EBADF; | |
2170 | ||
2171 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2172 | sizeof(range))) | |
2173 | return -EFAULT; | |
2174 | ||
2175 | dst = fdget(range.dst_fd); | |
2176 | if (!dst.file) | |
2177 | return -EBADF; | |
2178 | ||
2179 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2180 | err = -EBADF; | |
2181 | goto err_out; | |
2182 | } | |
2183 | ||
2184 | err = mnt_want_write_file(filp); | |
2185 | if (err) | |
2186 | goto err_out; | |
2187 | ||
2188 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2189 | range.pos_out, range.len); | |
2190 | ||
2191 | mnt_drop_write_file(filp); | |
2192 | ||
2193 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2194 | &range, sizeof(range))) | |
2195 | err = -EFAULT; | |
2196 | err_out: | |
2197 | fdput(dst); | |
2198 | return err; | |
2199 | } | |
2200 | ||
52656e6c JK |
2201 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2202 | { | |
2203 | switch (cmd) { | |
2204 | case F2FS_IOC_GETFLAGS: | |
2205 | return f2fs_ioc_getflags(filp, arg); | |
2206 | case F2FS_IOC_SETFLAGS: | |
2207 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2208 | case F2FS_IOC_GETVERSION: |
2209 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2210 | case F2FS_IOC_START_ATOMIC_WRITE: |
2211 | return f2fs_ioc_start_atomic_write(filp); | |
2212 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2213 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2214 | case F2FS_IOC_START_VOLATILE_WRITE: |
2215 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2216 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2217 | return f2fs_ioc_release_volatile_write(filp); | |
2218 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2219 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2220 | case F2FS_IOC_SHUTDOWN: |
2221 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2222 | case FITRIM: |
2223 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2224 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2225 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2226 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2227 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2228 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2229 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2230 | case F2FS_IOC_GARBAGE_COLLECT: |
2231 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
2232 | case F2FS_IOC_WRITE_CHECKPOINT: |
2233 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2234 | case F2FS_IOC_DEFRAGMENT: |
2235 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2236 | case F2FS_IOC_MOVE_RANGE: |
2237 | return f2fs_ioc_move_range(filp, arg); | |
fbfa2cc5 JK |
2238 | default: |
2239 | return -ENOTTY; | |
2240 | } | |
2241 | } | |
2242 | ||
fcc85a4d JK |
2243 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2244 | { | |
b439b103 JK |
2245 | struct file *file = iocb->ki_filp; |
2246 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2247 | struct blk_plug plug; |
b439b103 | 2248 | ssize_t ret; |
fcc85a4d JK |
2249 | |
2250 | if (f2fs_encrypted_inode(inode) && | |
0b81d077 JK |
2251 | !fscrypt_has_encryption_key(inode) && |
2252 | fscrypt_get_encryption_info(inode)) | |
fcc85a4d JK |
2253 | return -EACCES; |
2254 | ||
b439b103 JK |
2255 | inode_lock(inode); |
2256 | ret = generic_write_checks(iocb, from); | |
2257 | if (ret > 0) { | |
dc91de78 | 2258 | int err; |
a7de6086 | 2259 | |
dc91de78 JK |
2260 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
2261 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 2262 | |
dc91de78 | 2263 | err = f2fs_preallocate_blocks(iocb, from); |
a7de6086 JK |
2264 | if (err) { |
2265 | inode_unlock(inode); | |
2266 | return err; | |
9dfa1baf | 2267 | } |
a7de6086 JK |
2268 | blk_start_plug(&plug); |
2269 | ret = __generic_file_write_iter(iocb, from); | |
2270 | blk_finish_plug(&plug); | |
dc91de78 | 2271 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b439b103 JK |
2272 | } |
2273 | inode_unlock(inode); | |
2274 | ||
e2592217 CH |
2275 | if (ret > 0) |
2276 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2277 | return ret; |
fcc85a4d JK |
2278 | } |
2279 | ||
e9750824 NJ |
2280 | #ifdef CONFIG_COMPAT |
2281 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2282 | { | |
2283 | switch (cmd) { | |
2284 | case F2FS_IOC32_GETFLAGS: | |
2285 | cmd = F2FS_IOC_GETFLAGS; | |
2286 | break; | |
2287 | case F2FS_IOC32_SETFLAGS: | |
2288 | cmd = F2FS_IOC_SETFLAGS; | |
2289 | break; | |
04ef4b62 CY |
2290 | case F2FS_IOC32_GETVERSION: |
2291 | cmd = F2FS_IOC_GETVERSION; | |
2292 | break; | |
2293 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2294 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2295 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2296 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2297 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2298 | case F2FS_IOC_SHUTDOWN: | |
2299 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2300 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2301 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2302 | case F2FS_IOC_GARBAGE_COLLECT: | |
2303 | case F2FS_IOC_WRITE_CHECKPOINT: | |
2304 | case F2FS_IOC_DEFRAGMENT: | |
2305 | break; | |
4dd6f977 JK |
2306 | case F2FS_IOC_MOVE_RANGE: |
2307 | break; | |
e9750824 NJ |
2308 | default: |
2309 | return -ENOIOCTLCMD; | |
2310 | } | |
2311 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2312 | } | |
2313 | #endif | |
2314 | ||
fbfa2cc5 | 2315 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2316 | .llseek = f2fs_llseek, |
aad4f8bb | 2317 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2318 | .write_iter = f2fs_file_write_iter, |
2319 | .open = f2fs_file_open, | |
12662234 | 2320 | .release = f2fs_release_file, |
fbfa2cc5 JK |
2321 | .mmap = f2fs_file_mmap, |
2322 | .fsync = f2fs_sync_file, | |
2323 | .fallocate = f2fs_fallocate, | |
2324 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2325 | #ifdef CONFIG_COMPAT |
2326 | .compat_ioctl = f2fs_compat_ioctl, | |
2327 | #endif | |
fbfa2cc5 | 2328 | .splice_read = generic_file_splice_read, |
8d020765 | 2329 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2330 | }; |