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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> |
8da4b8c4 | 23 | #include <linux/uuid.h> |
4dd6f977 | 24 | #include <linux/file.h> |
fbfa2cc5 JK |
25 | |
26 | #include "f2fs.h" | |
27 | #include "node.h" | |
28 | #include "segment.h" | |
29 | #include "xattr.h" | |
30 | #include "acl.h" | |
c1c1b583 | 31 | #include "gc.h" |
db9f7c1a | 32 | #include "trace.h" |
a2a4a7e4 | 33 | #include <trace/events/f2fs.h> |
fbfa2cc5 JK |
34 | |
35 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, | |
36 | struct vm_fault *vmf) | |
37 | { | |
38 | struct page *page = vmf->page; | |
6131ffaa | 39 | struct inode *inode = file_inode(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 | |
9851e6e1 | 61 | file_update_time(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; | |
144 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
145 | need_cp = true; | |
d5053a34 JK |
146 | else if (test_opt(sbi, FASTBOOT)) |
147 | need_cp = true; | |
a344b9fd JK |
148 | else if (sbi->active_logs == 2) |
149 | need_cp = true; | |
9d1589ef CY |
150 | |
151 | return need_cp; | |
152 | } | |
153 | ||
9c7bb702 CL |
154 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
155 | { | |
156 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
157 | bool ret = false; | |
158 | /* But we need to avoid that there are some inode updates */ | |
159 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
160 | ret = true; | |
161 | f2fs_put_page(i, 0); | |
162 | return ret; | |
163 | } | |
164 | ||
51455b19 CL |
165 | static void try_to_fix_pino(struct inode *inode) |
166 | { | |
167 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
168 | nid_t pino; | |
169 | ||
170 | down_write(&fi->i_sem); | |
171 | fi->xattr_ver = 0; | |
172 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && | |
173 | get_parent_ino(inode, &pino)) { | |
205b9822 | 174 | f2fs_i_pino_write(inode, pino); |
51455b19 | 175 | file_got_pino(inode); |
51455b19 | 176 | } |
ee6d182f | 177 | up_write(&fi->i_sem); |
51455b19 CL |
178 | } |
179 | ||
608514de JK |
180 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
181 | int datasync, bool atomic) | |
fbfa2cc5 JK |
182 | { |
183 | struct inode *inode = file->f_mapping->host; | |
4081363f | 184 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 185 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
186 | int ret = 0; |
187 | bool need_cp = false; | |
188 | struct writeback_control wbc = { | |
c81bf1c8 | 189 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
190 | .nr_to_write = LONG_MAX, |
191 | .for_reclaim = 0, | |
192 | }; | |
193 | ||
6bacf52f | 194 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
195 | return 0; |
196 | ||
a2a4a7e4 | 197 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
198 | |
199 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 200 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 201 | set_inode_flag(inode, FI_NEED_IPU); |
fbfa2cc5 | 202 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
91942321 | 203 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 204 | |
a2a4a7e4 NJ |
205 | if (ret) { |
206 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 207 | return ret; |
a2a4a7e4 | 208 | } |
fbfa2cc5 | 209 | |
9c7bb702 | 210 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 211 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 212 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
213 | goto go_write; |
214 | } | |
215 | ||
6d99ba41 JK |
216 | /* |
217 | * if there is no written data, don't waste time to write recovery info. | |
218 | */ | |
91942321 | 219 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 220 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 221 | |
9c7bb702 CL |
222 | /* it may call write_inode just prior to fsync */ |
223 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 224 | goto go_write; |
19c9c466 | 225 | |
91942321 | 226 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 227 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
228 | goto flush_out; |
229 | goto out; | |
230 | } | |
19c9c466 | 231 | go_write: |
e5d2385e JK |
232 | /* |
233 | * Both of fdatasync() and fsync() are able to be recovered from | |
234 | * sudden-power-off. | |
235 | */ | |
91942321 | 236 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 237 | need_cp = need_do_checkpoint(inode); |
91942321 | 238 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 239 | |
fbfa2cc5 JK |
240 | if (need_cp) { |
241 | /* all the dirty node pages should be flushed for POR */ | |
242 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 243 | |
51455b19 CL |
244 | /* |
245 | * We've secured consistency through sync_fs. Following pino | |
246 | * will be used only for fsynced inodes after checkpoint. | |
247 | */ | |
248 | try_to_fix_pino(inode); | |
91942321 JK |
249 | clear_inode_flag(inode, FI_APPEND_WRITE); |
250 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
251 | goto out; |
252 | } | |
88bd02c9 | 253 | sync_nodes: |
26de9b11 | 254 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
255 | if (ret) |
256 | goto out; | |
51455b19 | 257 | |
871f599f | 258 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
259 | if (unlikely(f2fs_cp_error(sbi))) { |
260 | ret = -EIO; | |
871f599f | 261 | goto out; |
6d5a1495 | 262 | } |
871f599f | 263 | |
51455b19 | 264 | if (need_inode_block_update(sbi, ino)) { |
7c45729a | 265 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
266 | f2fs_write_inode(inode, NULL); |
267 | goto sync_nodes; | |
fbfa2cc5 | 268 | } |
51455b19 CL |
269 | |
270 | ret = wait_on_node_pages_writeback(sbi, ino); | |
271 | if (ret) | |
272 | goto out; | |
273 | ||
274 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 275 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 276 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 277 | flush_out: |
a49324f1 | 278 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 279 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
51455b19 | 280 | ret = f2fs_issue_flush(sbi); |
d0239e1b | 281 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 282 | out: |
a2a4a7e4 | 283 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 284 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
285 | return ret; |
286 | } | |
287 | ||
608514de JK |
288 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
289 | { | |
290 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
291 | } | |
292 | ||
7f7670fe JK |
293 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
294 | pgoff_t pgofs, int whence) | |
295 | { | |
296 | struct pagevec pvec; | |
297 | int nr_pages; | |
298 | ||
299 | if (whence != SEEK_DATA) | |
300 | return 0; | |
301 | ||
302 | /* find first dirty page index */ | |
303 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
304 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
305 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 306 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
307 | pagevec_release(&pvec); |
308 | return pgofs; | |
309 | } | |
310 | ||
311 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
312 | int whence) | |
313 | { | |
314 | switch (whence) { | |
315 | case SEEK_DATA: | |
316 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
317 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
318 | return true; | |
319 | break; | |
320 | case SEEK_HOLE: | |
321 | if (blkaddr == NULL_ADDR) | |
322 | return true; | |
323 | break; | |
324 | } | |
325 | return false; | |
326 | } | |
327 | ||
267378d4 CY |
328 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
329 | { | |
330 | struct inode *inode = file->f_mapping->host; | |
331 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
332 | struct dnode_of_data dn; | |
7f7670fe JK |
333 | pgoff_t pgofs, end_offset, dirty; |
334 | loff_t data_ofs = offset; | |
335 | loff_t isize; | |
267378d4 CY |
336 | int err = 0; |
337 | ||
5955102c | 338 | inode_lock(inode); |
267378d4 CY |
339 | |
340 | isize = i_size_read(inode); | |
341 | if (offset >= isize) | |
342 | goto fail; | |
343 | ||
344 | /* handle inline data case */ | |
622f28ae | 345 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
346 | if (whence == SEEK_HOLE) |
347 | data_ofs = isize; | |
348 | goto found; | |
349 | } | |
350 | ||
09cbfeaf | 351 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 352 | |
7f7670fe JK |
353 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
354 | ||
09cbfeaf | 355 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 356 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 357 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
358 | if (err && err != -ENOENT) { |
359 | goto fail; | |
360 | } else if (err == -ENOENT) { | |
e1c42045 | 361 | /* direct node does not exists */ |
267378d4 | 362 | if (whence == SEEK_DATA) { |
3cf45747 | 363 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
364 | continue; |
365 | } else { | |
366 | goto found; | |
367 | } | |
368 | } | |
369 | ||
81ca7350 | 370 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
371 | |
372 | /* find data/hole in dnode block */ | |
373 | for (; dn.ofs_in_node < end_offset; | |
374 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 375 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
376 | block_t blkaddr; |
377 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
378 | ||
7f7670fe | 379 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
380 | f2fs_put_dnode(&dn); |
381 | goto found; | |
382 | } | |
383 | } | |
384 | f2fs_put_dnode(&dn); | |
385 | } | |
386 | ||
387 | if (whence == SEEK_DATA) | |
388 | goto fail; | |
267378d4 | 389 | found: |
fe369bc8 JK |
390 | if (whence == SEEK_HOLE && data_ofs > isize) |
391 | data_ofs = isize; | |
5955102c | 392 | inode_unlock(inode); |
267378d4 CY |
393 | return vfs_setpos(file, data_ofs, maxbytes); |
394 | fail: | |
5955102c | 395 | inode_unlock(inode); |
267378d4 CY |
396 | return -ENXIO; |
397 | } | |
398 | ||
399 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
400 | { | |
401 | struct inode *inode = file->f_mapping->host; | |
402 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
403 | ||
404 | switch (whence) { | |
405 | case SEEK_SET: | |
406 | case SEEK_CUR: | |
407 | case SEEK_END: | |
408 | return generic_file_llseek_size(file, offset, whence, | |
409 | maxbytes, i_size_read(inode)); | |
410 | case SEEK_DATA: | |
411 | case SEEK_HOLE: | |
0b4c5afd JK |
412 | if (offset < 0) |
413 | return -ENXIO; | |
267378d4 CY |
414 | return f2fs_seek_block(file, offset, whence); |
415 | } | |
416 | ||
417 | return -EINVAL; | |
418 | } | |
419 | ||
fbfa2cc5 JK |
420 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
421 | { | |
b3d208f9 | 422 | struct inode *inode = file_inode(file); |
b9d777b8 | 423 | int err; |
b3d208f9 | 424 | |
fcc85a4d | 425 | if (f2fs_encrypted_inode(inode)) { |
0b81d077 | 426 | err = fscrypt_get_encryption_info(inode); |
fcc85a4d JK |
427 | if (err) |
428 | return 0; | |
ae108668 CY |
429 | if (!f2fs_encrypted_inode(inode)) |
430 | return -ENOKEY; | |
fcc85a4d JK |
431 | } |
432 | ||
b3d208f9 | 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 JK |
532 | if (IS_ERR(page)) |
533 | return 0; | |
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)) { | |
0bfcfcca CY |
571 | if (truncate_inline_inode(ipage, from)) |
572 | set_page_dirty(ipage); | |
bb95d9ab JK |
573 | if (from == 0) |
574 | clear_inode_flag(inode, FI_DATA_EXIST); | |
b3d208f9 | 575 | f2fs_put_page(ipage, 1); |
0bfcfcca | 576 | truncate_page = true; |
b3d208f9 JK |
577 | goto out; |
578 | } | |
579 | ||
580 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 581 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
582 | if (err) { |
583 | if (err == -ENOENT) | |
584 | goto free_next; | |
b3d208f9 | 585 | goto out; |
1ce86bf6 JK |
586 | } |
587 | ||
81ca7350 | 588 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
589 | |
590 | count -= dn.ofs_in_node; | |
9850cf4a | 591 | f2fs_bug_on(sbi, count < 0); |
39936837 | 592 | |
fbfa2cc5 JK |
593 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
594 | truncate_data_blocks_range(&dn, count); | |
595 | free_from += count; | |
596 | } | |
597 | ||
598 | f2fs_put_dnode(&dn); | |
599 | free_next: | |
600 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
601 | out: |
602 | if (lock) | |
603 | f2fs_unlock_op(sbi); | |
09210c97 | 604 | free_partial: |
b3d208f9 JK |
605 | /* lastly zero out the first data page */ |
606 | if (!err) | |
0bfcfcca | 607 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 608 | |
51dd6249 | 609 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
610 | return err; |
611 | } | |
612 | ||
9a449e9c | 613 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 614 | { |
b0154891 CY |
615 | int err; |
616 | ||
fbfa2cc5 JK |
617 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
618 | S_ISLNK(inode->i_mode))) | |
b0154891 | 619 | return 0; |
fbfa2cc5 | 620 | |
51dd6249 NJ |
621 | trace_f2fs_truncate(inode); |
622 | ||
92dffd01 | 623 | /* we should check inline_data size */ |
b9d777b8 | 624 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
625 | err = f2fs_convert_inline_inode(inode); |
626 | if (err) | |
627 | return err; | |
92dffd01 JK |
628 | } |
629 | ||
9a449e9c | 630 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
631 | if (err) |
632 | return err; | |
633 | ||
078cd827 | 634 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 635 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 636 | return 0; |
fbfa2cc5 JK |
637 | } |
638 | ||
2d4d9fb5 | 639 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
640 | struct dentry *dentry, struct kstat *stat) |
641 | { | |
2b0143b5 | 642 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
643 | generic_fillattr(inode, stat); |
644 | stat->blocks <<= 3; | |
645 | return 0; | |
646 | } | |
647 | ||
648 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
649 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
650 | { | |
fbfa2cc5 JK |
651 | unsigned int ia_valid = attr->ia_valid; |
652 | ||
653 | if (ia_valid & ATTR_UID) | |
654 | inode->i_uid = attr->ia_uid; | |
655 | if (ia_valid & ATTR_GID) | |
656 | inode->i_gid = attr->ia_gid; | |
657 | if (ia_valid & ATTR_ATIME) | |
658 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
659 | inode->i_sb->s_time_gran); | |
660 | if (ia_valid & ATTR_MTIME) | |
661 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
662 | inode->i_sb->s_time_gran); | |
663 | if (ia_valid & ATTR_CTIME) | |
664 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
665 | inode->i_sb->s_time_gran); | |
666 | if (ia_valid & ATTR_MODE) { | |
667 | umode_t mode = attr->ia_mode; | |
668 | ||
669 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
670 | mode &= ~S_ISGID; | |
91942321 | 671 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
672 | } |
673 | } | |
674 | #else | |
675 | #define __setattr_copy setattr_copy | |
676 | #endif | |
677 | ||
678 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
679 | { | |
2b0143b5 | 680 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 681 | int err; |
c0ed4405 | 682 | bool size_changed = false; |
fbfa2cc5 | 683 | |
31051c85 | 684 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
685 | if (err) |
686 | return err; | |
687 | ||
09db6a2e | 688 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d | 689 | if (f2fs_encrypted_inode(inode) && |
0b81d077 | 690 | fscrypt_get_encryption_info(inode)) |
fcc85a4d JK |
691 | return -EACCES; |
692 | ||
3c454145 | 693 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 694 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 695 | err = f2fs_truncate(inode); |
b0154891 CY |
696 | if (err) |
697 | return err; | |
09db6a2e CY |
698 | } else { |
699 | /* | |
3c454145 CY |
700 | * do not trim all blocks after i_size if target size is |
701 | * larger than i_size. | |
09db6a2e | 702 | */ |
3c454145 | 703 | truncate_setsize(inode, attr->ia_size); |
0cab80ee CY |
704 | |
705 | /* should convert inline inode here */ | |
b9d777b8 | 706 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
707 | err = f2fs_convert_inline_inode(inode); |
708 | if (err) | |
709 | return err; | |
710 | } | |
078cd827 | 711 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 712 | } |
c0ed4405 YH |
713 | |
714 | size_changed = true; | |
fbfa2cc5 JK |
715 | } |
716 | ||
717 | __setattr_copy(inode, attr); | |
718 | ||
719 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 720 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
721 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
722 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
723 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
724 | } |
725 | } | |
726 | ||
c0ed4405 YH |
727 | /* file size may changed here */ |
728 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
729 | |
730 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
731 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
732 | ||
fbfa2cc5 JK |
733 | return err; |
734 | } | |
735 | ||
736 | const struct inode_operations f2fs_file_inode_operations = { | |
737 | .getattr = f2fs_getattr, | |
738 | .setattr = f2fs_setattr, | |
739 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 740 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 741 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 742 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 743 | #endif |
9ab70134 | 744 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
745 | }; |
746 | ||
6394328a | 747 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
748 | loff_t start, loff_t len) |
749 | { | |
4081363f | 750 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
751 | struct page *page; |
752 | ||
753 | if (!len) | |
6394328a | 754 | return 0; |
fbfa2cc5 | 755 | |
2c4db1a6 | 756 | f2fs_balance_fs(sbi, true); |
bd43df02 | 757 | |
e479556b | 758 | f2fs_lock_op(sbi); |
64aa7ed9 | 759 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 760 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 761 | |
6394328a CY |
762 | if (IS_ERR(page)) |
763 | return PTR_ERR(page); | |
764 | ||
fec1d657 | 765 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
766 | zero_user(page, start, len); |
767 | set_page_dirty(page); | |
768 | f2fs_put_page(page, 1); | |
769 | return 0; | |
fbfa2cc5 JK |
770 | } |
771 | ||
772 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
773 | { | |
fbfa2cc5 JK |
774 | int err; |
775 | ||
ea58711e | 776 | while (pg_start < pg_end) { |
fbfa2cc5 | 777 | struct dnode_of_data dn; |
ea58711e | 778 | pgoff_t end_offset, count; |
9eaeba70 | 779 | |
fbfa2cc5 | 780 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 781 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 782 | if (err) { |
ea58711e CY |
783 | if (err == -ENOENT) { |
784 | pg_start++; | |
fbfa2cc5 | 785 | continue; |
ea58711e | 786 | } |
fbfa2cc5 JK |
787 | return err; |
788 | } | |
789 | ||
81ca7350 | 790 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
791 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
792 | ||
793 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
794 | ||
795 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 796 | f2fs_put_dnode(&dn); |
ea58711e CY |
797 | |
798 | pg_start += count; | |
fbfa2cc5 JK |
799 | } |
800 | return 0; | |
801 | } | |
802 | ||
a66c7b2f | 803 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
804 | { |
805 | pgoff_t pg_start, pg_end; | |
806 | loff_t off_start, off_end; | |
b9d777b8 | 807 | int ret; |
fbfa2cc5 | 808 | |
b9d777b8 JK |
809 | ret = f2fs_convert_inline_inode(inode); |
810 | if (ret) | |
811 | return ret; | |
9ffe0fb5 | 812 | |
09cbfeaf KS |
813 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
814 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 815 | |
09cbfeaf KS |
816 | off_start = offset & (PAGE_SIZE - 1); |
817 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
818 | |
819 | if (pg_start == pg_end) { | |
6394328a | 820 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 821 | off_end - off_start); |
6394328a CY |
822 | if (ret) |
823 | return ret; | |
fbfa2cc5 | 824 | } else { |
6394328a CY |
825 | if (off_start) { |
826 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 827 | PAGE_SIZE - off_start); |
6394328a CY |
828 | if (ret) |
829 | return ret; | |
830 | } | |
831 | if (off_end) { | |
832 | ret = fill_zero(inode, pg_end, 0, off_end); | |
833 | if (ret) | |
834 | return ret; | |
835 | } | |
fbfa2cc5 JK |
836 | |
837 | if (pg_start < pg_end) { | |
838 | struct address_space *mapping = inode->i_mapping; | |
839 | loff_t blk_start, blk_end; | |
4081363f | 840 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 841 | |
2c4db1a6 | 842 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 843 | |
09cbfeaf KS |
844 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
845 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
fbfa2cc5 JK |
846 | truncate_inode_pages_range(mapping, blk_start, |
847 | blk_end - 1); | |
39936837 | 848 | |
e479556b | 849 | f2fs_lock_op(sbi); |
fbfa2cc5 | 850 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 851 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
852 | } |
853 | } | |
854 | ||
fbfa2cc5 JK |
855 | return ret; |
856 | } | |
857 | ||
0a2aa8fb JK |
858 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
859 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
860 | { |
861 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
862 | struct dnode_of_data dn; | |
0a2aa8fb | 863 | int ret, done, i; |
ecbaa406 | 864 | |
0a2aa8fb | 865 | next_dnode: |
6e2c64ad | 866 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 867 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
868 | if (ret && ret != -ENOENT) { |
869 | return ret; | |
870 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
871 | if (dn.max_level == 0) |
872 | return -ENOENT; | |
873 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
874 | blkaddr += done; | |
875 | do_replace += done; | |
876 | goto next; | |
877 | } | |
878 | ||
879 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
880 | dn.ofs_in_node, len); | |
881 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
882 | *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
883 | if (!is_checkpointed_data(sbi, *blkaddr)) { | |
884 | ||
885 | if (test_opt(sbi, LFS)) { | |
886 | f2fs_put_dnode(&dn); | |
887 | return -ENOTSUPP; | |
888 | } | |
889 | ||
6e2c64ad | 890 | /* do not invalidate this block address */ |
f28b3434 | 891 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 892 | *do_replace = 1; |
b4ace337 | 893 | } |
6e2c64ad | 894 | } |
0a2aa8fb JK |
895 | f2fs_put_dnode(&dn); |
896 | next: | |
897 | len -= done; | |
898 | off += done; | |
899 | if (len) | |
900 | goto next_dnode; | |
901 | return 0; | |
902 | } | |
b4ace337 | 903 | |
0a2aa8fb JK |
904 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
905 | int *do_replace, pgoff_t off, int len) | |
906 | { | |
907 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
908 | struct dnode_of_data dn; | |
909 | int ret, i; | |
b4ace337 | 910 | |
0a2aa8fb JK |
911 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
912 | if (*do_replace == 0) | |
913 | continue; | |
b4ace337 | 914 | |
0a2aa8fb JK |
915 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
916 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
917 | if (ret) { | |
918 | dec_valid_block_count(sbi, inode, 1); | |
919 | invalidate_blocks(sbi, *blkaddr); | |
920 | } else { | |
921 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 922 | } |
0a2aa8fb JK |
923 | f2fs_put_dnode(&dn); |
924 | } | |
925 | return 0; | |
926 | } | |
927 | ||
928 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
929 | block_t *blkaddr, int *do_replace, | |
930 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
931 | { | |
932 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
933 | pgoff_t i = 0; | |
934 | int ret; | |
36abef4e | 935 | |
0a2aa8fb JK |
936 | while (i < len) { |
937 | if (blkaddr[i] == NULL_ADDR && !full) { | |
938 | i++; | |
939 | continue; | |
6e2c64ad | 940 | } |
b4ace337 | 941 | |
0a2aa8fb JK |
942 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
943 | struct dnode_of_data dn; | |
944 | struct node_info ni; | |
945 | size_t new_size; | |
946 | pgoff_t ilen; | |
b4ace337 | 947 | |
0a2aa8fb JK |
948 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
949 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
950 | if (ret) | |
951 | return ret; | |
b4ace337 | 952 | |
0a2aa8fb JK |
953 | get_node_info(sbi, dn.nid, &ni); |
954 | ilen = min((pgoff_t) | |
955 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
956 | dn.ofs_in_node, len - i); | |
957 | do { | |
958 | dn.data_blkaddr = datablock_addr(dn.node_page, | |
959 | dn.ofs_in_node); | |
960 | truncate_data_blocks_range(&dn, 1); | |
961 | ||
962 | if (do_replace[i]) { | |
963 | f2fs_i_blocks_write(src_inode, | |
964 | 1, false); | |
965 | f2fs_i_blocks_write(dst_inode, | |
966 | 1, true); | |
967 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
968 | blkaddr[i], ni.version, true, false); | |
969 | ||
970 | do_replace[i] = 0; | |
971 | } | |
972 | dn.ofs_in_node++; | |
973 | i++; | |
974 | new_size = (dst + i) << PAGE_SHIFT; | |
975 | if (dst_inode->i_size < new_size) | |
976 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 977 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 978 | |
0a2aa8fb JK |
979 | f2fs_put_dnode(&dn); |
980 | } else { | |
981 | struct page *psrc, *pdst; | |
982 | ||
983 | psrc = get_lock_data_page(src_inode, src + i, true); | |
984 | if (IS_ERR(psrc)) | |
985 | return PTR_ERR(psrc); | |
986 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
987 | true); | |
988 | if (IS_ERR(pdst)) { | |
989 | f2fs_put_page(psrc, 1); | |
990 | return PTR_ERR(pdst); | |
991 | } | |
992 | f2fs_copy_page(psrc, pdst); | |
993 | set_page_dirty(pdst); | |
994 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 995 | f2fs_put_page(psrc, 1); |
b4ace337 | 996 | |
0a2aa8fb JK |
997 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
998 | if (ret) | |
999 | return ret; | |
1000 | i++; | |
1001 | } | |
6e2c64ad JK |
1002 | } |
1003 | return 0; | |
0a2aa8fb | 1004 | } |
b4ace337 | 1005 | |
0a2aa8fb JK |
1006 | static int __exchange_data_block(struct inode *src_inode, |
1007 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1008 | pgoff_t len, bool full) |
0a2aa8fb JK |
1009 | { |
1010 | block_t *src_blkaddr; | |
1011 | int *do_replace; | |
363cad7f | 1012 | pgoff_t olen; |
0a2aa8fb JK |
1013 | int ret; |
1014 | ||
363cad7f JK |
1015 | while (len) { |
1016 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1017 | |
363cad7f JK |
1018 | src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
1019 | if (!src_blkaddr) | |
1020 | return -ENOMEM; | |
0a2aa8fb | 1021 | |
363cad7f JK |
1022 | do_replace = f2fs_kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
1023 | if (!do_replace) { | |
1024 | kvfree(src_blkaddr); | |
1025 | return -ENOMEM; | |
1026 | } | |
0a2aa8fb | 1027 | |
363cad7f JK |
1028 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1029 | do_replace, src, olen); | |
1030 | if (ret) | |
1031 | goto roll_back; | |
0a2aa8fb | 1032 | |
363cad7f JK |
1033 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1034 | do_replace, src, dst, olen, full); | |
1035 | if (ret) | |
1036 | goto roll_back; | |
1037 | ||
1038 | src += olen; | |
1039 | dst += olen; | |
1040 | len -= olen; | |
1041 | ||
1042 | kvfree(src_blkaddr); | |
1043 | kvfree(do_replace); | |
1044 | } | |
0a2aa8fb JK |
1045 | return 0; |
1046 | ||
1047 | roll_back: | |
1048 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1049 | kvfree(src_blkaddr); | |
1050 | kvfree(do_replace); | |
6e2c64ad JK |
1051 | return ret; |
1052 | } | |
b4ace337 | 1053 | |
6e2c64ad JK |
1054 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1055 | { | |
1056 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1057 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1058 | int ret; |
6e2c64ad | 1059 | |
0a2aa8fb JK |
1060 | f2fs_balance_fs(sbi, true); |
1061 | f2fs_lock_op(sbi); | |
5f281fab JK |
1062 | |
1063 | f2fs_drop_extent_tree(inode); | |
1064 | ||
0a2aa8fb JK |
1065 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1066 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1067 | return ret; |
1068 | } | |
1069 | ||
1070 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1071 | { | |
1072 | pgoff_t pg_start, pg_end; | |
1073 | loff_t new_size; | |
1074 | int ret; | |
1075 | ||
b4ace337 CY |
1076 | if (offset + len >= i_size_read(inode)) |
1077 | return -EINVAL; | |
1078 | ||
1079 | /* collapse range should be aligned to block size of f2fs. */ | |
1080 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1081 | return -EINVAL; | |
1082 | ||
b9d777b8 JK |
1083 | ret = f2fs_convert_inline_inode(inode); |
1084 | if (ret) | |
1085 | return ret; | |
97a7b2c2 | 1086 | |
09cbfeaf KS |
1087 | pg_start = offset >> PAGE_SHIFT; |
1088 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 CY |
1089 | |
1090 | /* write out all dirty pages from offset */ | |
1091 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1092 | if (ret) | |
1093 | return ret; | |
1094 | ||
1095 | truncate_pagecache(inode, offset); | |
1096 | ||
1097 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1098 | if (ret) | |
1099 | return ret; | |
1100 | ||
6e2c64ad JK |
1101 | /* write out all moved pages, if possible */ |
1102 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1103 | truncate_pagecache(inode, offset); | |
1104 | ||
b4ace337 | 1105 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1106 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1107 | |
1108 | ret = truncate_blocks(inode, new_size, true); | |
1109 | if (!ret) | |
fc9581c8 | 1110 | f2fs_i_size_write(inode, new_size); |
b4ace337 CY |
1111 | |
1112 | return ret; | |
1113 | } | |
1114 | ||
6e961949 CY |
1115 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1116 | pgoff_t end) | |
1117 | { | |
1118 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1119 | pgoff_t index = start; | |
1120 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1121 | blkcnt_t count = 0; | |
1122 | int ret; | |
1123 | ||
1124 | for (; index < end; index++, dn->ofs_in_node++) { | |
1125 | if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR) | |
1126 | count++; | |
1127 | } | |
1128 | ||
1129 | dn->ofs_in_node = ofs_in_node; | |
1130 | ret = reserve_new_blocks(dn, count); | |
1131 | if (ret) | |
1132 | return ret; | |
1133 | ||
1134 | dn->ofs_in_node = ofs_in_node; | |
1135 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
1136 | dn->data_blkaddr = | |
1137 | datablock_addr(dn->node_page, dn->ofs_in_node); | |
1138 | /* | |
1139 | * reserve_new_blocks will not guarantee entire block | |
1140 | * allocation. | |
1141 | */ | |
1142 | if (dn->data_blkaddr == NULL_ADDR) { | |
1143 | ret = -ENOSPC; | |
1144 | break; | |
1145 | } | |
1146 | if (dn->data_blkaddr != NEW_ADDR) { | |
1147 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1148 | dn->data_blkaddr = NEW_ADDR; | |
1149 | set_data_blkaddr(dn); | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1154 | ||
1155 | return ret; | |
1156 | } | |
1157 | ||
75cd4e09 CY |
1158 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1159 | int mode) | |
1160 | { | |
1161 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1162 | struct address_space *mapping = inode->i_mapping; | |
1163 | pgoff_t index, pg_start, pg_end; | |
1164 | loff_t new_size = i_size_read(inode); | |
1165 | loff_t off_start, off_end; | |
1166 | int ret = 0; | |
1167 | ||
75cd4e09 CY |
1168 | ret = inode_newsize_ok(inode, (len + offset)); |
1169 | if (ret) | |
1170 | return ret; | |
1171 | ||
b9d777b8 JK |
1172 | ret = f2fs_convert_inline_inode(inode); |
1173 | if (ret) | |
1174 | return ret; | |
75cd4e09 CY |
1175 | |
1176 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1177 | if (ret) | |
1178 | return ret; | |
1179 | ||
1180 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1181 | ||
09cbfeaf KS |
1182 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1183 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1184 | |
09cbfeaf KS |
1185 | off_start = offset & (PAGE_SIZE - 1); |
1186 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1187 | |
1188 | if (pg_start == pg_end) { | |
6394328a CY |
1189 | ret = fill_zero(inode, pg_start, off_start, |
1190 | off_end - off_start); | |
1191 | if (ret) | |
1192 | return ret; | |
1193 | ||
75cd4e09 CY |
1194 | if (offset + len > new_size) |
1195 | new_size = offset + len; | |
1196 | new_size = max_t(loff_t, new_size, offset + len); | |
1197 | } else { | |
1198 | if (off_start) { | |
6394328a | 1199 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1200 | PAGE_SIZE - off_start); |
6394328a CY |
1201 | if (ret) |
1202 | return ret; | |
1203 | ||
75cd4e09 | 1204 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1205 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1206 | } |
1207 | ||
6e961949 | 1208 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1209 | struct dnode_of_data dn; |
6e961949 CY |
1210 | unsigned int end_offset; |
1211 | pgoff_t end; | |
75cd4e09 CY |
1212 | |
1213 | f2fs_lock_op(sbi); | |
1214 | ||
6e961949 CY |
1215 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1216 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1217 | if (ret) { |
1218 | f2fs_unlock_op(sbi); | |
1219 | goto out; | |
1220 | } | |
1221 | ||
6e961949 CY |
1222 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1223 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1224 | ||
1225 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1226 | f2fs_put_dnode(&dn); |
1227 | f2fs_unlock_op(sbi); | |
9434fcde CY |
1228 | |
1229 | f2fs_balance_fs(sbi, dn.node_changed); | |
1230 | ||
6e961949 CY |
1231 | if (ret) |
1232 | goto out; | |
75cd4e09 | 1233 | |
6e961949 | 1234 | index = end; |
75cd4e09 | 1235 | new_size = max_t(loff_t, new_size, |
6e961949 | 1236 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1237 | } |
1238 | ||
1239 | if (off_end) { | |
6394328a CY |
1240 | ret = fill_zero(inode, pg_end, 0, off_end); |
1241 | if (ret) | |
1242 | goto out; | |
1243 | ||
75cd4e09 CY |
1244 | new_size = max_t(loff_t, new_size, offset + len); |
1245 | } | |
1246 | } | |
1247 | ||
1248 | out: | |
ee6d182f | 1249 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1250 | f2fs_i_size_write(inode, new_size); |
75cd4e09 CY |
1251 | |
1252 | return ret; | |
1253 | } | |
1254 | ||
f62185d0 CY |
1255 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1256 | { | |
1257 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1258 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1259 | loff_t new_size; |
6e2c64ad | 1260 | int ret = 0; |
f62185d0 | 1261 | |
f62185d0 CY |
1262 | new_size = i_size_read(inode) + len; |
1263 | if (new_size > inode->i_sb->s_maxbytes) | |
1264 | return -EFBIG; | |
1265 | ||
1266 | if (offset >= i_size_read(inode)) | |
1267 | return -EINVAL; | |
1268 | ||
1269 | /* insert range should be aligned to block size of f2fs. */ | |
1270 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1271 | return -EINVAL; | |
1272 | ||
b9d777b8 JK |
1273 | ret = f2fs_convert_inline_inode(inode); |
1274 | if (ret) | |
1275 | return ret; | |
97a7b2c2 | 1276 | |
2c4db1a6 | 1277 | f2fs_balance_fs(sbi, true); |
2a340760 | 1278 | |
f62185d0 CY |
1279 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1280 | if (ret) | |
1281 | return ret; | |
1282 | ||
1283 | /* write out all dirty pages from offset */ | |
1284 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1285 | if (ret) | |
1286 | return ret; | |
1287 | ||
1288 | truncate_pagecache(inode, offset); | |
1289 | ||
09cbfeaf KS |
1290 | pg_start = offset >> PAGE_SHIFT; |
1291 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1292 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1293 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1294 | ||
1295 | while (!ret && idx > pg_start) { | |
1296 | nr = idx - pg_start; | |
1297 | if (nr > delta) | |
1298 | nr = delta; | |
1299 | idx -= nr; | |
f62185d0 | 1300 | |
f62185d0 | 1301 | f2fs_lock_op(sbi); |
5f281fab JK |
1302 | f2fs_drop_extent_tree(inode); |
1303 | ||
0a2aa8fb JK |
1304 | ret = __exchange_data_block(inode, inode, idx, |
1305 | idx + delta, nr, false); | |
f62185d0 CY |
1306 | f2fs_unlock_op(sbi); |
1307 | } | |
1308 | ||
6e2c64ad JK |
1309 | /* write out all moved pages, if possible */ |
1310 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1311 | truncate_pagecache(inode, offset); | |
1312 | ||
1313 | if (!ret) | |
fc9581c8 | 1314 | f2fs_i_size_write(inode, new_size); |
f62185d0 CY |
1315 | return ret; |
1316 | } | |
1317 | ||
fbfa2cc5 JK |
1318 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1319 | loff_t len, int mode) | |
1320 | { | |
4081363f | 1321 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1322 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1323 | pgoff_t pg_end; | |
fbfa2cc5 | 1324 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1325 | loff_t off_end; |
a7de6086 | 1326 | int err; |
fbfa2cc5 | 1327 | |
a7de6086 JK |
1328 | err = inode_newsize_ok(inode, (len + offset)); |
1329 | if (err) | |
1330 | return err; | |
fbfa2cc5 | 1331 | |
a7de6086 JK |
1332 | err = f2fs_convert_inline_inode(inode); |
1333 | if (err) | |
1334 | return err; | |
9e09fc85 | 1335 | |
2c4db1a6 | 1336 | f2fs_balance_fs(sbi, true); |
2a340760 | 1337 | |
e12dd7bd | 1338 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1339 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1340 | |
e12dd7bd JK |
1341 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1342 | map.m_len = pg_end - map.m_lblk; | |
1343 | if (off_end) | |
1344 | map.m_len++; | |
ead43275 | 1345 | |
a7de6086 JK |
1346 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1347 | if (err) { | |
e12dd7bd | 1348 | pgoff_t last_off; |
fbfa2cc5 | 1349 | |
e12dd7bd | 1350 | if (!map.m_len) |
a7de6086 | 1351 | return err; |
98397ff3 | 1352 | |
e12dd7bd JK |
1353 | last_off = map.m_lblk + map.m_len - 1; |
1354 | ||
1355 | /* update new size to the failed position */ | |
1356 | new_size = (last_off == pg_end) ? offset + len: | |
1357 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1358 | } else { | |
1359 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1360 | } |
1361 | ||
ee6d182f | 1362 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1363 | f2fs_i_size_write(inode, new_size); |
fbfa2cc5 | 1364 | |
a7de6086 | 1365 | return err; |
fbfa2cc5 JK |
1366 | } |
1367 | ||
1368 | static long f2fs_fallocate(struct file *file, int mode, | |
1369 | loff_t offset, loff_t len) | |
1370 | { | |
6131ffaa | 1371 | struct inode *inode = file_inode(file); |
587c0a42 | 1372 | long ret = 0; |
fbfa2cc5 | 1373 | |
c998012b CY |
1374 | /* f2fs only support ->fallocate for regular file */ |
1375 | if (!S_ISREG(inode->i_mode)) | |
1376 | return -EINVAL; | |
1377 | ||
f62185d0 CY |
1378 | if (f2fs_encrypted_inode(inode) && |
1379 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1380 | return -EOPNOTSUPP; |
1381 | ||
b4ace337 | 1382 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1383 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1384 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1385 | return -EOPNOTSUPP; |
1386 | ||
5955102c | 1387 | inode_lock(inode); |
3375f696 | 1388 | |
587c0a42 TY |
1389 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1390 | if (offset >= inode->i_size) | |
1391 | goto out; | |
1392 | ||
a66c7b2f | 1393 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1394 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1395 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1396 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1397 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1398 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1399 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1400 | } else { |
fbfa2cc5 | 1401 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1402 | } |
fbfa2cc5 | 1403 | |
3af60a49 | 1404 | if (!ret) { |
078cd827 | 1405 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1406 | f2fs_mark_inode_dirty_sync(inode, false); |
26787236 JK |
1407 | if (mode & FALLOC_FL_KEEP_SIZE) |
1408 | file_set_keep_isize(inode); | |
d0239e1b | 1409 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1410 | } |
3375f696 | 1411 | |
587c0a42 | 1412 | out: |
5955102c | 1413 | inode_unlock(inode); |
3375f696 | 1414 | |
c01e2853 | 1415 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1416 | return ret; |
1417 | } | |
1418 | ||
1e84371f JK |
1419 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1420 | { | |
de5307e4 JK |
1421 | /* |
1422 | * f2fs_relase_file is called at every close calls. So we should | |
1423 | * not drop any inmemory pages by close called by other process. | |
1424 | */ | |
1425 | if (!(filp->f_mode & FMODE_WRITE) || | |
1426 | atomic_read(&inode->i_writecount) != 1) | |
1427 | return 0; | |
1428 | ||
1e84371f JK |
1429 | /* some remained atomic pages should discarded */ |
1430 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1431 | drop_inmem_pages(inode); |
1e84371f | 1432 | if (f2fs_is_volatile_file(inode)) { |
91942321 JK |
1433 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1434 | set_inode_flag(inode, FI_DROP_CACHE); | |
1e84371f | 1435 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1436 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1437 | } |
1438 | return 0; | |
1439 | } | |
1440 | ||
fbfa2cc5 JK |
1441 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1442 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1443 | ||
1444 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1445 | { | |
1446 | if (S_ISDIR(mode)) | |
1447 | return flags; | |
1448 | else if (S_ISREG(mode)) | |
1449 | return flags & F2FS_REG_FLMASK; | |
1450 | else | |
1451 | return flags & F2FS_OTHER_FLMASK; | |
1452 | } | |
1453 | ||
52656e6c | 1454 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1455 | { |
6131ffaa | 1456 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1457 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1458 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1459 | return put_user(flags, (int __user *)arg); | |
1460 | } | |
fbfa2cc5 | 1461 | |
52656e6c JK |
1462 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1463 | { | |
1464 | struct inode *inode = file_inode(filp); | |
1465 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
69494229 | 1466 | unsigned int flags; |
52656e6c JK |
1467 | unsigned int oldflags; |
1468 | int ret; | |
fbfa2cc5 | 1469 | |
7fb17fe4 CY |
1470 | if (!inode_owner_or_capable(inode)) |
1471 | return -EACCES; | |
1472 | ||
1473 | if (get_user(flags, (int __user *)arg)) | |
1474 | return -EFAULT; | |
1475 | ||
52656e6c JK |
1476 | ret = mnt_want_write_file(filp); |
1477 | if (ret) | |
1478 | return ret; | |
fbfa2cc5 | 1479 | |
52656e6c | 1480 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1481 | |
5955102c | 1482 | inode_lock(inode); |
fbfa2cc5 | 1483 | |
52656e6c | 1484 | oldflags = fi->i_flags; |
fbfa2cc5 | 1485 | |
52656e6c JK |
1486 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1487 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1488 | inode_unlock(inode); |
52656e6c JK |
1489 | ret = -EPERM; |
1490 | goto out; | |
fbfa2cc5 | 1491 | } |
52656e6c | 1492 | } |
fbfa2cc5 | 1493 | |
52656e6c JK |
1494 | flags = flags & FS_FL_USER_MODIFIABLE; |
1495 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1496 | fi->i_flags = flags; | |
5955102c | 1497 | inode_unlock(inode); |
fbfa2cc5 | 1498 | |
078cd827 | 1499 | inode->i_ctime = current_time(inode); |
205b9822 | 1500 | f2fs_set_inode_flags(inode); |
fbfa2cc5 | 1501 | out: |
52656e6c JK |
1502 | mnt_drop_write_file(filp); |
1503 | return ret; | |
1504 | } | |
4b2fecc8 | 1505 | |
d49f3e89 CY |
1506 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1507 | { | |
1508 | struct inode *inode = file_inode(filp); | |
1509 | ||
1510 | return put_user(inode->i_generation, (int __user *)arg); | |
1511 | } | |
1512 | ||
88b88a66 JK |
1513 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1514 | { | |
1515 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1516 | int ret; |
88b88a66 JK |
1517 | |
1518 | if (!inode_owner_or_capable(inode)) | |
1519 | return -EACCES; | |
1520 | ||
7fb17fe4 CY |
1521 | ret = mnt_want_write_file(filp); |
1522 | if (ret) | |
1523 | return ret; | |
1524 | ||
0fac558b CY |
1525 | inode_lock(inode); |
1526 | ||
1e84371f | 1527 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1528 | goto out; |
88b88a66 | 1529 | |
f4c9c743 CY |
1530 | ret = f2fs_convert_inline_inode(inode); |
1531 | if (ret) | |
7fb17fe4 | 1532 | goto out; |
88b88a66 | 1533 | |
91942321 | 1534 | set_inode_flag(inode, FI_ATOMIC_FILE); |
d0239e1b JK |
1535 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1536 | ||
c27753d6 | 1537 | if (!get_dirty_pages(inode)) |
7fb17fe4 | 1538 | goto out; |
c27753d6 JK |
1539 | |
1540 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1541 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1542 | inode->i_ino, get_dirty_pages(inode)); |
1543 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
1544 | if (ret) | |
91942321 | 1545 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
7fb17fe4 | 1546 | out: |
26a28a0c JK |
1547 | stat_inc_atomic_write(inode); |
1548 | stat_update_max_atomic_write(inode); | |
0fac558b | 1549 | inode_unlock(inode); |
7fb17fe4 | 1550 | mnt_drop_write_file(filp); |
c27753d6 | 1551 | return ret; |
88b88a66 JK |
1552 | } |
1553 | ||
1554 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1555 | { | |
1556 | struct inode *inode = file_inode(filp); | |
1557 | int ret; | |
1558 | ||
1559 | if (!inode_owner_or_capable(inode)) | |
1560 | return -EACCES; | |
1561 | ||
1562 | ret = mnt_want_write_file(filp); | |
1563 | if (ret) | |
1564 | return ret; | |
1565 | ||
0fac558b CY |
1566 | inode_lock(inode); |
1567 | ||
7fb17fe4 CY |
1568 | if (f2fs_is_volatile_file(inode)) |
1569 | goto err_out; | |
1570 | ||
6282adbf | 1571 | if (f2fs_is_atomic_file(inode)) { |
91942321 | 1572 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
29b96b54 | 1573 | ret = commit_inmem_pages(inode); |
447135a8 | 1574 | if (ret) { |
91942321 | 1575 | set_inode_flag(inode, FI_ATOMIC_FILE); |
edb27dee | 1576 | goto err_out; |
447135a8 | 1577 | } |
26a28a0c JK |
1578 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
1579 | stat_dec_atomic_write(inode); | |
1580 | } else { | |
1581 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); | |
6282adbf | 1582 | } |
edb27dee | 1583 | err_out: |
0fac558b | 1584 | inode_unlock(inode); |
88b88a66 JK |
1585 | mnt_drop_write_file(filp); |
1586 | return ret; | |
1587 | } | |
1588 | ||
02a1335f JK |
1589 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1590 | { | |
1591 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1592 | int ret; |
02a1335f JK |
1593 | |
1594 | if (!inode_owner_or_capable(inode)) | |
1595 | return -EACCES; | |
1596 | ||
7fb17fe4 CY |
1597 | ret = mnt_want_write_file(filp); |
1598 | if (ret) | |
1599 | return ret; | |
1600 | ||
0fac558b CY |
1601 | inode_lock(inode); |
1602 | ||
1e84371f | 1603 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1604 | goto out; |
1e84371f | 1605 | |
f4c9c743 CY |
1606 | ret = f2fs_convert_inline_inode(inode); |
1607 | if (ret) | |
7fb17fe4 | 1608 | goto out; |
b3d208f9 | 1609 | |
91942321 | 1610 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1611 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1612 | out: |
0fac558b | 1613 | inode_unlock(inode); |
7fb17fe4 CY |
1614 | mnt_drop_write_file(filp); |
1615 | return ret; | |
02a1335f JK |
1616 | } |
1617 | ||
1e84371f JK |
1618 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1619 | { | |
1620 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1621 | int ret; |
1e84371f JK |
1622 | |
1623 | if (!inode_owner_or_capable(inode)) | |
1624 | return -EACCES; | |
1625 | ||
7fb17fe4 CY |
1626 | ret = mnt_want_write_file(filp); |
1627 | if (ret) | |
1628 | return ret; | |
1629 | ||
0fac558b CY |
1630 | inode_lock(inode); |
1631 | ||
1e84371f | 1632 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1633 | goto out; |
1e84371f | 1634 | |
7fb17fe4 CY |
1635 | if (!f2fs_is_first_block_written(inode)) { |
1636 | ret = truncate_partial_data_page(inode, 0, true); | |
1637 | goto out; | |
1638 | } | |
3c6c2beb | 1639 | |
7fb17fe4 CY |
1640 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1641 | out: | |
0fac558b | 1642 | inode_unlock(inode); |
7fb17fe4 CY |
1643 | mnt_drop_write_file(filp); |
1644 | return ret; | |
1e84371f JK |
1645 | } |
1646 | ||
1647 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1648 | { | |
1649 | struct inode *inode = file_inode(filp); | |
1650 | int ret; | |
1651 | ||
1652 | if (!inode_owner_or_capable(inode)) | |
1653 | return -EACCES; | |
1654 | ||
1655 | ret = mnt_want_write_file(filp); | |
1656 | if (ret) | |
1657 | return ret; | |
1658 | ||
0fac558b CY |
1659 | inode_lock(inode); |
1660 | ||
26dc3d44 | 1661 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1662 | drop_inmem_pages(inode); |
732d5648 | 1663 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1664 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
608514de | 1665 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1666 | } |
de6a8ec9 | 1667 | |
0fac558b CY |
1668 | inode_unlock(inode); |
1669 | ||
1e84371f | 1670 | mnt_drop_write_file(filp); |
d0239e1b | 1671 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1672 | return ret; |
1673 | } | |
1674 | ||
1abff93d JK |
1675 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1676 | { | |
1677 | struct inode *inode = file_inode(filp); | |
1678 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1679 | struct super_block *sb = sbi->sb; | |
1680 | __u32 in; | |
7fb17fe4 | 1681 | int ret; |
1abff93d JK |
1682 | |
1683 | if (!capable(CAP_SYS_ADMIN)) | |
1684 | return -EPERM; | |
1685 | ||
1686 | if (get_user(in, (__u32 __user *)arg)) | |
1687 | return -EFAULT; | |
1688 | ||
7fb17fe4 CY |
1689 | ret = mnt_want_write_file(filp); |
1690 | if (ret) | |
1691 | return ret; | |
1692 | ||
1abff93d JK |
1693 | switch (in) { |
1694 | case F2FS_GOING_DOWN_FULLSYNC: | |
1695 | sb = freeze_bdev(sb->s_bdev); | |
1696 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1697 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1698 | thaw_bdev(sb->s_bdev, sb); |
1699 | } | |
1700 | break; | |
1701 | case F2FS_GOING_DOWN_METASYNC: | |
1702 | /* do checkpoint only */ | |
1703 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1704 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1705 | break; |
1706 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1707 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1708 | break; |
c912a829 JK |
1709 | case F2FS_GOING_DOWN_METAFLUSH: |
1710 | sync_meta_pages(sbi, META, LONG_MAX); | |
38f91ca8 | 1711 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1712 | break; |
1abff93d | 1713 | default: |
7fb17fe4 CY |
1714 | ret = -EINVAL; |
1715 | goto out; | |
1abff93d | 1716 | } |
d0239e1b | 1717 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1718 | out: |
1719 | mnt_drop_write_file(filp); | |
1720 | return ret; | |
1abff93d JK |
1721 | } |
1722 | ||
52656e6c JK |
1723 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1724 | { | |
1725 | struct inode *inode = file_inode(filp); | |
1726 | struct super_block *sb = inode->i_sb; | |
1727 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1728 | struct fstrim_range range; | |
1729 | int ret; | |
4b2fecc8 | 1730 | |
52656e6c JK |
1731 | if (!capable(CAP_SYS_ADMIN)) |
1732 | return -EPERM; | |
4b2fecc8 | 1733 | |
52656e6c JK |
1734 | if (!blk_queue_discard(q)) |
1735 | return -EOPNOTSUPP; | |
4b2fecc8 | 1736 | |
52656e6c JK |
1737 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1738 | sizeof(range))) | |
1739 | return -EFAULT; | |
4b2fecc8 | 1740 | |
7fb17fe4 CY |
1741 | ret = mnt_want_write_file(filp); |
1742 | if (ret) | |
1743 | return ret; | |
1744 | ||
52656e6c JK |
1745 | range.minlen = max((unsigned int)range.minlen, |
1746 | q->limits.discard_granularity); | |
1747 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1748 | mnt_drop_write_file(filp); |
52656e6c JK |
1749 | if (ret < 0) |
1750 | return ret; | |
4b2fecc8 | 1751 | |
52656e6c JK |
1752 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1753 | sizeof(range))) | |
1754 | return -EFAULT; | |
d0239e1b | 1755 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1756 | return 0; |
1757 | } | |
1758 | ||
f424f664 JK |
1759 | static bool uuid_is_nonzero(__u8 u[16]) |
1760 | { | |
1761 | int i; | |
1762 | ||
1763 | for (i = 0; i < 16; i++) | |
1764 | if (u[i]) | |
1765 | return true; | |
1766 | return false; | |
1767 | } | |
1768 | ||
1769 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1770 | { | |
f424f664 JK |
1771 | struct inode *inode = file_inode(filp); |
1772 | ||
d0239e1b | 1773 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1774 | |
db717d8e | 1775 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
1776 | } |
1777 | ||
1778 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1779 | { | |
db717d8e | 1780 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
1781 | } |
1782 | ||
1783 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1784 | { | |
1785 | struct inode *inode = file_inode(filp); | |
1786 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1787 | int err; | |
1788 | ||
1789 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1790 | return -EOPNOTSUPP; | |
1791 | ||
1792 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1793 | goto got_it; | |
1794 | ||
1795 | err = mnt_want_write_file(filp); | |
1796 | if (err) | |
1797 | return err; | |
1798 | ||
1799 | /* update superblock with uuid */ | |
1800 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1801 | ||
c5bda1c8 | 1802 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1803 | if (err) { |
1804 | /* undo new data */ | |
1805 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1806 | mnt_drop_write_file(filp); |
f424f664 JK |
1807 | return err; |
1808 | } | |
e8240f65 | 1809 | mnt_drop_write_file(filp); |
f424f664 JK |
1810 | got_it: |
1811 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1812 | 16)) | |
1813 | return -EFAULT; | |
1814 | return 0; | |
1815 | } | |
1816 | ||
c1c1b583 CY |
1817 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1818 | { | |
1819 | struct inode *inode = file_inode(filp); | |
1820 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1821 | __u32 sync; |
7fb17fe4 | 1822 | int ret; |
c1c1b583 CY |
1823 | |
1824 | if (!capable(CAP_SYS_ADMIN)) | |
1825 | return -EPERM; | |
1826 | ||
d530d4d8 | 1827 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1828 | return -EFAULT; |
1829 | ||
d530d4d8 CY |
1830 | if (f2fs_readonly(sbi->sb)) |
1831 | return -EROFS; | |
c1c1b583 | 1832 | |
7fb17fe4 CY |
1833 | ret = mnt_want_write_file(filp); |
1834 | if (ret) | |
1835 | return ret; | |
1836 | ||
d530d4d8 | 1837 | if (!sync) { |
7fb17fe4 CY |
1838 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1839 | ret = -EBUSY; | |
1840 | goto out; | |
1841 | } | |
d530d4d8 CY |
1842 | } else { |
1843 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1844 | } |
1845 | ||
7702bdbe | 1846 | ret = f2fs_gc(sbi, sync, true); |
7fb17fe4 CY |
1847 | out: |
1848 | mnt_drop_write_file(filp); | |
1849 | return ret; | |
c1c1b583 CY |
1850 | } |
1851 | ||
456b88e4 CY |
1852 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1853 | { | |
1854 | struct inode *inode = file_inode(filp); | |
1855 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 1856 | int ret; |
456b88e4 CY |
1857 | |
1858 | if (!capable(CAP_SYS_ADMIN)) | |
1859 | return -EPERM; | |
1860 | ||
1861 | if (f2fs_readonly(sbi->sb)) | |
1862 | return -EROFS; | |
1863 | ||
7fb17fe4 CY |
1864 | ret = mnt_want_write_file(filp); |
1865 | if (ret) | |
1866 | return ret; | |
1867 | ||
1868 | ret = f2fs_sync_fs(sbi->sb, 1); | |
1869 | ||
1870 | mnt_drop_write_file(filp); | |
1871 | return ret; | |
456b88e4 CY |
1872 | } |
1873 | ||
d323d005 CY |
1874 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1875 | struct file *filp, | |
1876 | struct f2fs_defragment *range) | |
1877 | { | |
1878 | struct inode *inode = file_inode(filp); | |
da85985c | 1879 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
d323d005 CY |
1880 | struct extent_info ei; |
1881 | pgoff_t pg_start, pg_end; | |
3519e3f9 | 1882 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1883 | unsigned int total = 0, sec_num; |
3519e3f9 | 1884 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
d323d005 CY |
1885 | block_t blk_end = 0; |
1886 | bool fragmented = false; | |
1887 | int err; | |
1888 | ||
1889 | /* if in-place-update policy is enabled, don't waste time here */ | |
1890 | if (need_inplace_update(inode)) | |
1891 | return -EINVAL; | |
1892 | ||
09cbfeaf KS |
1893 | pg_start = range->start >> PAGE_SHIFT; |
1894 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 1895 | |
2c4db1a6 | 1896 | f2fs_balance_fs(sbi, true); |
d323d005 | 1897 | |
5955102c | 1898 | inode_lock(inode); |
d323d005 CY |
1899 | |
1900 | /* writeback all dirty pages in the range */ | |
1901 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1902 | range->start + range->len - 1); |
d323d005 CY |
1903 | if (err) |
1904 | goto out; | |
1905 | ||
1906 | /* | |
1907 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1908 | * block addresses are continuous. | |
1909 | */ | |
1910 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1911 | if (ei.fofs + ei.len >= pg_end) | |
1912 | goto out; | |
1913 | } | |
1914 | ||
1915 | map.m_lblk = pg_start; | |
d323d005 CY |
1916 | |
1917 | /* | |
1918 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1919 | * physical block addresses are continuous even if there are hole(s) | |
1920 | * in logical blocks. | |
1921 | */ | |
1922 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1923 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1924 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1925 | if (err) | |
1926 | goto out; | |
1927 | ||
1928 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1929 | map.m_lblk++; | |
d323d005 CY |
1930 | continue; |
1931 | } | |
1932 | ||
1933 | if (blk_end && blk_end != map.m_pblk) { | |
1934 | fragmented = true; | |
1935 | break; | |
1936 | } | |
1937 | blk_end = map.m_pblk + map.m_len; | |
1938 | ||
1939 | map.m_lblk += map.m_len; | |
d323d005 CY |
1940 | } |
1941 | ||
1942 | if (!fragmented) | |
1943 | goto out; | |
1944 | ||
1945 | map.m_lblk = pg_start; | |
1946 | map.m_len = pg_end - pg_start; | |
1947 | ||
1948 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; | |
1949 | ||
1950 | /* | |
1951 | * make sure there are enough free section for LFS allocation, this can | |
1952 | * avoid defragment running in SSR mode when free section are allocated | |
1953 | * intensively | |
1954 | */ | |
7f3037a5 | 1955 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
1956 | err = -EAGAIN; |
1957 | goto out; | |
1958 | } | |
1959 | ||
1960 | while (map.m_lblk < pg_end) { | |
1961 | pgoff_t idx; | |
1962 | int cnt = 0; | |
1963 | ||
1964 | do_map: | |
a1c1e9b7 | 1965 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1966 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1967 | if (err) | |
1968 | goto clear_out; | |
1969 | ||
1970 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1971 | map.m_lblk++; | |
1972 | continue; | |
1973 | } | |
1974 | ||
91942321 | 1975 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1976 | |
1977 | idx = map.m_lblk; | |
1978 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
1979 | struct page *page; | |
1980 | ||
1981 | page = get_lock_data_page(inode, idx, true); | |
1982 | if (IS_ERR(page)) { | |
1983 | err = PTR_ERR(page); | |
1984 | goto clear_out; | |
1985 | } | |
1986 | ||
1987 | set_page_dirty(page); | |
1988 | f2fs_put_page(page, 1); | |
1989 | ||
1990 | idx++; | |
1991 | cnt++; | |
1992 | total++; | |
1993 | } | |
1994 | ||
1995 | map.m_lblk = idx; | |
d323d005 CY |
1996 | |
1997 | if (idx < pg_end && cnt < blk_per_seg) | |
1998 | goto do_map; | |
1999 | ||
91942321 | 2000 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2001 | |
2002 | err = filemap_fdatawrite(inode->i_mapping); | |
2003 | if (err) | |
2004 | goto out; | |
2005 | } | |
2006 | clear_out: | |
91942321 | 2007 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2008 | out: |
5955102c | 2009 | inode_unlock(inode); |
d323d005 | 2010 | if (!err) |
09cbfeaf | 2011 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2012 | return err; |
2013 | } | |
2014 | ||
2015 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2016 | { | |
2017 | struct inode *inode = file_inode(filp); | |
2018 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2019 | struct f2fs_defragment range; | |
2020 | int err; | |
2021 | ||
2022 | if (!capable(CAP_SYS_ADMIN)) | |
2023 | return -EPERM; | |
2024 | ||
2025 | if (!S_ISREG(inode->i_mode)) | |
2026 | return -EINVAL; | |
2027 | ||
2028 | err = mnt_want_write_file(filp); | |
2029 | if (err) | |
2030 | return err; | |
2031 | ||
2032 | if (f2fs_readonly(sbi->sb)) { | |
2033 | err = -EROFS; | |
2034 | goto out; | |
2035 | } | |
2036 | ||
2037 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
2038 | sizeof(range))) { | |
2039 | err = -EFAULT; | |
2040 | goto out; | |
2041 | } | |
2042 | ||
2043 | /* verify alignment of offset & size */ | |
2044 | if (range.start & (F2FS_BLKSIZE - 1) || | |
2045 | range.len & (F2FS_BLKSIZE - 1)) { | |
2046 | err = -EINVAL; | |
2047 | goto out; | |
2048 | } | |
2049 | ||
2050 | err = f2fs_defragment_range(sbi, filp, &range); | |
d0239e1b | 2051 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 CY |
2052 | if (err < 0) |
2053 | goto out; | |
2054 | ||
2055 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2056 | sizeof(range))) | |
2057 | err = -EFAULT; | |
2058 | out: | |
2059 | mnt_drop_write_file(filp); | |
2060 | return err; | |
2061 | } | |
2062 | ||
4dd6f977 JK |
2063 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2064 | struct file *file_out, loff_t pos_out, size_t len) | |
2065 | { | |
2066 | struct inode *src = file_inode(file_in); | |
2067 | struct inode *dst = file_inode(file_out); | |
2068 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2069 | size_t olen = len, dst_max_i_size = 0; | |
2070 | size_t dst_osize; | |
2071 | int ret; | |
2072 | ||
2073 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2074 | src->i_sb != dst->i_sb) | |
2075 | return -EXDEV; | |
2076 | ||
2077 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2078 | return -EROFS; | |
2079 | ||
fe8494bf CY |
2080 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2081 | return -EINVAL; | |
4dd6f977 JK |
2082 | |
2083 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2084 | return -EOPNOTSUPP; | |
2085 | ||
d95fd91c FL |
2086 | if (src == dst) { |
2087 | if (pos_in == pos_out) | |
2088 | return 0; | |
2089 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2090 | return -EINVAL; | |
2091 | } | |
2092 | ||
4dd6f977 | 2093 | inode_lock(src); |
20a3d61d CY |
2094 | if (src != dst) { |
2095 | if (!inode_trylock(dst)) { | |
2096 | ret = -EBUSY; | |
2097 | goto out; | |
2098 | } | |
2099 | } | |
4dd6f977 JK |
2100 | |
2101 | ret = -EINVAL; | |
2102 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2103 | goto out_unlock; | |
2104 | if (len == 0) | |
2105 | olen = len = src->i_size - pos_in; | |
2106 | if (pos_in + len == src->i_size) | |
2107 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2108 | if (len == 0) { | |
2109 | ret = 0; | |
2110 | goto out_unlock; | |
2111 | } | |
2112 | ||
2113 | dst_osize = dst->i_size; | |
2114 | if (pos_out + olen > dst->i_size) | |
2115 | dst_max_i_size = pos_out + olen; | |
2116 | ||
2117 | /* verify the end result is block aligned */ | |
2118 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2119 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2120 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2121 | goto out_unlock; | |
2122 | ||
2123 | ret = f2fs_convert_inline_inode(src); | |
2124 | if (ret) | |
2125 | goto out_unlock; | |
2126 | ||
2127 | ret = f2fs_convert_inline_inode(dst); | |
2128 | if (ret) | |
2129 | goto out_unlock; | |
2130 | ||
2131 | /* write out all dirty pages from offset */ | |
2132 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2133 | pos_in, pos_in + len); | |
2134 | if (ret) | |
2135 | goto out_unlock; | |
2136 | ||
2137 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2138 | pos_out, pos_out + len); | |
2139 | if (ret) | |
2140 | goto out_unlock; | |
2141 | ||
2142 | f2fs_balance_fs(sbi, true); | |
2143 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2144 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2145 | pos_out >> F2FS_BLKSIZE_BITS, | |
2146 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2147 | |
2148 | if (!ret) { | |
2149 | if (dst_max_i_size) | |
2150 | f2fs_i_size_write(dst, dst_max_i_size); | |
2151 | else if (dst_osize != dst->i_size) | |
2152 | f2fs_i_size_write(dst, dst_osize); | |
2153 | } | |
2154 | f2fs_unlock_op(sbi); | |
2155 | out_unlock: | |
2156 | if (src != dst) | |
2157 | inode_unlock(dst); | |
20a3d61d | 2158 | out: |
4dd6f977 JK |
2159 | inode_unlock(src); |
2160 | return ret; | |
2161 | } | |
2162 | ||
2163 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2164 | { | |
2165 | struct f2fs_move_range range; | |
2166 | struct fd dst; | |
2167 | int err; | |
2168 | ||
2169 | if (!(filp->f_mode & FMODE_READ) || | |
2170 | !(filp->f_mode & FMODE_WRITE)) | |
2171 | return -EBADF; | |
2172 | ||
2173 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2174 | sizeof(range))) | |
2175 | return -EFAULT; | |
2176 | ||
2177 | dst = fdget(range.dst_fd); | |
2178 | if (!dst.file) | |
2179 | return -EBADF; | |
2180 | ||
2181 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2182 | err = -EBADF; | |
2183 | goto err_out; | |
2184 | } | |
2185 | ||
2186 | err = mnt_want_write_file(filp); | |
2187 | if (err) | |
2188 | goto err_out; | |
2189 | ||
2190 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2191 | range.pos_out, range.len); | |
2192 | ||
2193 | mnt_drop_write_file(filp); | |
2194 | ||
2195 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2196 | &range, sizeof(range))) | |
2197 | err = -EFAULT; | |
2198 | err_out: | |
2199 | fdput(dst); | |
2200 | return err; | |
2201 | } | |
2202 | ||
52656e6c JK |
2203 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2204 | { | |
2205 | switch (cmd) { | |
2206 | case F2FS_IOC_GETFLAGS: | |
2207 | return f2fs_ioc_getflags(filp, arg); | |
2208 | case F2FS_IOC_SETFLAGS: | |
2209 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2210 | case F2FS_IOC_GETVERSION: |
2211 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2212 | case F2FS_IOC_START_ATOMIC_WRITE: |
2213 | return f2fs_ioc_start_atomic_write(filp); | |
2214 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2215 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2216 | case F2FS_IOC_START_VOLATILE_WRITE: |
2217 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2218 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2219 | return f2fs_ioc_release_volatile_write(filp); | |
2220 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2221 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2222 | case F2FS_IOC_SHUTDOWN: |
2223 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2224 | case FITRIM: |
2225 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2226 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2227 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2228 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2229 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2230 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2231 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2232 | case F2FS_IOC_GARBAGE_COLLECT: |
2233 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
2234 | case F2FS_IOC_WRITE_CHECKPOINT: |
2235 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2236 | case F2FS_IOC_DEFRAGMENT: |
2237 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2238 | case F2FS_IOC_MOVE_RANGE: |
2239 | return f2fs_ioc_move_range(filp, arg); | |
fbfa2cc5 JK |
2240 | default: |
2241 | return -ENOTTY; | |
2242 | } | |
2243 | } | |
2244 | ||
fcc85a4d JK |
2245 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2246 | { | |
b439b103 JK |
2247 | struct file *file = iocb->ki_filp; |
2248 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2249 | struct blk_plug plug; |
b439b103 | 2250 | ssize_t ret; |
fcc85a4d JK |
2251 | |
2252 | if (f2fs_encrypted_inode(inode) && | |
0b81d077 JK |
2253 | !fscrypt_has_encryption_key(inode) && |
2254 | fscrypt_get_encryption_info(inode)) | |
fcc85a4d JK |
2255 | return -EACCES; |
2256 | ||
b439b103 JK |
2257 | inode_lock(inode); |
2258 | ret = generic_write_checks(iocb, from); | |
2259 | if (ret > 0) { | |
a7de6086 JK |
2260 | int err = f2fs_preallocate_blocks(iocb, from); |
2261 | ||
2262 | if (err) { | |
2263 | inode_unlock(inode); | |
2264 | return err; | |
9dfa1baf | 2265 | } |
a7de6086 JK |
2266 | blk_start_plug(&plug); |
2267 | ret = __generic_file_write_iter(iocb, from); | |
2268 | blk_finish_plug(&plug); | |
b439b103 JK |
2269 | } |
2270 | inode_unlock(inode); | |
2271 | ||
e2592217 CH |
2272 | if (ret > 0) |
2273 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2274 | return ret; |
fcc85a4d JK |
2275 | } |
2276 | ||
e9750824 NJ |
2277 | #ifdef CONFIG_COMPAT |
2278 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2279 | { | |
2280 | switch (cmd) { | |
2281 | case F2FS_IOC32_GETFLAGS: | |
2282 | cmd = F2FS_IOC_GETFLAGS; | |
2283 | break; | |
2284 | case F2FS_IOC32_SETFLAGS: | |
2285 | cmd = F2FS_IOC_SETFLAGS; | |
2286 | break; | |
04ef4b62 CY |
2287 | case F2FS_IOC32_GETVERSION: |
2288 | cmd = F2FS_IOC_GETVERSION; | |
2289 | break; | |
2290 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2291 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2292 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2293 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2294 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2295 | case F2FS_IOC_SHUTDOWN: | |
2296 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2297 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2298 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2299 | case F2FS_IOC_GARBAGE_COLLECT: | |
2300 | case F2FS_IOC_WRITE_CHECKPOINT: | |
2301 | case F2FS_IOC_DEFRAGMENT: | |
2302 | break; | |
4dd6f977 JK |
2303 | case F2FS_IOC_MOVE_RANGE: |
2304 | break; | |
e9750824 NJ |
2305 | default: |
2306 | return -ENOIOCTLCMD; | |
2307 | } | |
2308 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2309 | } | |
2310 | #endif | |
2311 | ||
fbfa2cc5 | 2312 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2313 | .llseek = f2fs_llseek, |
aad4f8bb | 2314 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2315 | .write_iter = f2fs_file_write_iter, |
2316 | .open = f2fs_file_open, | |
12662234 | 2317 | .release = f2fs_release_file, |
fbfa2cc5 JK |
2318 | .mmap = f2fs_file_mmap, |
2319 | .fsync = f2fs_sync_file, | |
2320 | .fallocate = f2fs_fallocate, | |
2321 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2322 | #ifdef CONFIG_COMPAT |
2323 | .compat_ioctl = f2fs_compat_ioctl, | |
2324 | #endif | |
fbfa2cc5 | 2325 | .splice_read = generic_file_splice_read, |
8d020765 | 2326 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2327 | }; |