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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 | ||
5b339124 CY |
97 | /* if gced page is attached, don't write to cold segment */ |
98 | clear_cold_data(page); | |
fbfa2cc5 JK |
99 | out: |
100 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 101 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 JK |
102 | return block_page_mkwrite_return(err); |
103 | } | |
104 | ||
105 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
692bb55d | 106 | .fault = filemap_fault, |
f1820361 | 107 | .map_pages = filemap_map_pages, |
692bb55d | 108 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
109 | }; |
110 | ||
354a3399 JK |
111 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
112 | { | |
113 | struct dentry *dentry; | |
114 | ||
115 | inode = igrab(inode); | |
116 | dentry = d_find_any_alias(inode); | |
117 | iput(inode); | |
118 | if (!dentry) | |
119 | return 0; | |
120 | ||
e7d55452 | 121 | if (update_dent_inode(inode, inode, &dentry->d_name)) { |
f0947e5c JK |
122 | dput(dentry); |
123 | return 0; | |
124 | } | |
354a3399 | 125 | |
f0947e5c JK |
126 | *pino = parent_ino(dentry); |
127 | dput(dentry); | |
354a3399 JK |
128 | return 1; |
129 | } | |
130 | ||
9d1589ef CY |
131 | static inline bool need_do_checkpoint(struct inode *inode) |
132 | { | |
4081363f | 133 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
134 | bool need_cp = false; |
135 | ||
136 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
137 | need_cp = true; | |
bbf156f7 | 138 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
e7d55452 | 139 | need_cp = true; |
9d1589ef CY |
140 | else if (file_wrong_pino(inode)) |
141 | need_cp = true; | |
142 | else if (!space_for_roll_forward(sbi)) | |
143 | need_cp = true; | |
144 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
145 | need_cp = true; | |
146 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
147 | need_cp = true; | |
d5053a34 JK |
148 | else if (test_opt(sbi, FASTBOOT)) |
149 | need_cp = true; | |
a344b9fd JK |
150 | else if (sbi->active_logs == 2) |
151 | need_cp = true; | |
9d1589ef CY |
152 | |
153 | return need_cp; | |
154 | } | |
155 | ||
9c7bb702 CL |
156 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
157 | { | |
158 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
159 | bool ret = false; | |
160 | /* But we need to avoid that there are some inode updates */ | |
161 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
162 | ret = true; | |
163 | f2fs_put_page(i, 0); | |
164 | return ret; | |
165 | } | |
166 | ||
51455b19 CL |
167 | static void try_to_fix_pino(struct inode *inode) |
168 | { | |
169 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
170 | nid_t pino; | |
171 | ||
172 | down_write(&fi->i_sem); | |
173 | fi->xattr_ver = 0; | |
174 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && | |
175 | get_parent_ino(inode, &pino)) { | |
205b9822 | 176 | f2fs_i_pino_write(inode, pino); |
51455b19 | 177 | file_got_pino(inode); |
51455b19 | 178 | } |
ee6d182f | 179 | up_write(&fi->i_sem); |
51455b19 CL |
180 | } |
181 | ||
608514de JK |
182 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
183 | int datasync, bool atomic) | |
fbfa2cc5 JK |
184 | { |
185 | struct inode *inode = file->f_mapping->host; | |
4081363f | 186 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 187 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
188 | int ret = 0; |
189 | bool need_cp = false; | |
190 | struct writeback_control wbc = { | |
c81bf1c8 | 191 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
192 | .nr_to_write = LONG_MAX, |
193 | .for_reclaim = 0, | |
194 | }; | |
195 | ||
6bacf52f | 196 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
197 | return 0; |
198 | ||
a2a4a7e4 | 199 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
200 | |
201 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 202 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 203 | set_inode_flag(inode, FI_NEED_IPU); |
fbfa2cc5 | 204 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
91942321 | 205 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 206 | |
a2a4a7e4 NJ |
207 | if (ret) { |
208 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 209 | return ret; |
a2a4a7e4 | 210 | } |
fbfa2cc5 | 211 | |
9c7bb702 | 212 | /* if the inode is dirty, let's recover all the time */ |
26de9b11 | 213 | if (!datasync && !f2fs_skip_inode_update(inode)) { |
2286c020 | 214 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
215 | goto go_write; |
216 | } | |
217 | ||
6d99ba41 JK |
218 | /* |
219 | * if there is no written data, don't waste time to write recovery info. | |
220 | */ | |
91942321 | 221 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 222 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 223 | |
9c7bb702 CL |
224 | /* it may call write_inode just prior to fsync */ |
225 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 226 | goto go_write; |
19c9c466 | 227 | |
91942321 | 228 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 229 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
230 | goto flush_out; |
231 | goto out; | |
232 | } | |
19c9c466 | 233 | go_write: |
e5d2385e JK |
234 | /* |
235 | * Both of fdatasync() and fsync() are able to be recovered from | |
236 | * sudden-power-off. | |
237 | */ | |
91942321 | 238 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 239 | need_cp = need_do_checkpoint(inode); |
91942321 | 240 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 241 | |
fbfa2cc5 JK |
242 | if (need_cp) { |
243 | /* all the dirty node pages should be flushed for POR */ | |
244 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 245 | |
51455b19 CL |
246 | /* |
247 | * We've secured consistency through sync_fs. Following pino | |
248 | * will be used only for fsynced inodes after checkpoint. | |
249 | */ | |
250 | try_to_fix_pino(inode); | |
91942321 JK |
251 | clear_inode_flag(inode, FI_APPEND_WRITE); |
252 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
253 | goto out; |
254 | } | |
88bd02c9 | 255 | sync_nodes: |
26de9b11 | 256 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
257 | if (ret) |
258 | goto out; | |
51455b19 | 259 | |
871f599f | 260 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
261 | if (unlikely(f2fs_cp_error(sbi))) { |
262 | ret = -EIO; | |
871f599f | 263 | goto out; |
6d5a1495 | 264 | } |
871f599f | 265 | |
51455b19 | 266 | if (need_inode_block_update(sbi, ino)) { |
b56ab837 | 267 | f2fs_mark_inode_dirty_sync(inode); |
51455b19 CL |
268 | f2fs_write_inode(inode, NULL); |
269 | goto sync_nodes; | |
fbfa2cc5 | 270 | } |
51455b19 CL |
271 | |
272 | ret = wait_on_node_pages_writeback(sbi, ino); | |
273 | if (ret) | |
274 | goto out; | |
275 | ||
276 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 277 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 278 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 279 | flush_out: |
a49324f1 | 280 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 281 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
51455b19 | 282 | ret = f2fs_issue_flush(sbi); |
d0239e1b | 283 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 284 | out: |
a2a4a7e4 | 285 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 286 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
287 | return ret; |
288 | } | |
289 | ||
608514de JK |
290 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
291 | { | |
292 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
293 | } | |
294 | ||
7f7670fe JK |
295 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
296 | pgoff_t pgofs, int whence) | |
297 | { | |
298 | struct pagevec pvec; | |
299 | int nr_pages; | |
300 | ||
301 | if (whence != SEEK_DATA) | |
302 | return 0; | |
303 | ||
304 | /* find first dirty page index */ | |
305 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
306 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
307 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 308 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
309 | pagevec_release(&pvec); |
310 | return pgofs; | |
311 | } | |
312 | ||
313 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
314 | int whence) | |
315 | { | |
316 | switch (whence) { | |
317 | case SEEK_DATA: | |
318 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
319 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
320 | return true; | |
321 | break; | |
322 | case SEEK_HOLE: | |
323 | if (blkaddr == NULL_ADDR) | |
324 | return true; | |
325 | break; | |
326 | } | |
327 | return false; | |
328 | } | |
329 | ||
267378d4 CY |
330 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
331 | { | |
332 | struct inode *inode = file->f_mapping->host; | |
333 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
334 | struct dnode_of_data dn; | |
7f7670fe JK |
335 | pgoff_t pgofs, end_offset, dirty; |
336 | loff_t data_ofs = offset; | |
337 | loff_t isize; | |
267378d4 CY |
338 | int err = 0; |
339 | ||
5955102c | 340 | inode_lock(inode); |
267378d4 CY |
341 | |
342 | isize = i_size_read(inode); | |
343 | if (offset >= isize) | |
344 | goto fail; | |
345 | ||
346 | /* handle inline data case */ | |
622f28ae | 347 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
348 | if (whence == SEEK_HOLE) |
349 | data_ofs = isize; | |
350 | goto found; | |
351 | } | |
352 | ||
09cbfeaf | 353 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 354 | |
7f7670fe JK |
355 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
356 | ||
09cbfeaf | 357 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 358 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 359 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
360 | if (err && err != -ENOENT) { |
361 | goto fail; | |
362 | } else if (err == -ENOENT) { | |
e1c42045 | 363 | /* direct node does not exists */ |
267378d4 | 364 | if (whence == SEEK_DATA) { |
3cf45747 | 365 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
366 | continue; |
367 | } else { | |
368 | goto found; | |
369 | } | |
370 | } | |
371 | ||
81ca7350 | 372 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
373 | |
374 | /* find data/hole in dnode block */ | |
375 | for (; dn.ofs_in_node < end_offset; | |
376 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 377 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
378 | block_t blkaddr; |
379 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
380 | ||
7f7670fe | 381 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
382 | f2fs_put_dnode(&dn); |
383 | goto found; | |
384 | } | |
385 | } | |
386 | f2fs_put_dnode(&dn); | |
387 | } | |
388 | ||
389 | if (whence == SEEK_DATA) | |
390 | goto fail; | |
267378d4 | 391 | found: |
fe369bc8 JK |
392 | if (whence == SEEK_HOLE && data_ofs > isize) |
393 | data_ofs = isize; | |
5955102c | 394 | inode_unlock(inode); |
267378d4 CY |
395 | return vfs_setpos(file, data_ofs, maxbytes); |
396 | fail: | |
5955102c | 397 | inode_unlock(inode); |
267378d4 CY |
398 | return -ENXIO; |
399 | } | |
400 | ||
401 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
402 | { | |
403 | struct inode *inode = file->f_mapping->host; | |
404 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
405 | ||
406 | switch (whence) { | |
407 | case SEEK_SET: | |
408 | case SEEK_CUR: | |
409 | case SEEK_END: | |
410 | return generic_file_llseek_size(file, offset, whence, | |
411 | maxbytes, i_size_read(inode)); | |
412 | case SEEK_DATA: | |
413 | case SEEK_HOLE: | |
0b4c5afd JK |
414 | if (offset < 0) |
415 | return -ENXIO; | |
267378d4 CY |
416 | return f2fs_seek_block(file, offset, whence); |
417 | } | |
418 | ||
419 | return -EINVAL; | |
420 | } | |
421 | ||
fbfa2cc5 JK |
422 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
423 | { | |
b3d208f9 | 424 | struct inode *inode = file_inode(file); |
b9d777b8 | 425 | int err; |
b3d208f9 | 426 | |
fcc85a4d | 427 | if (f2fs_encrypted_inode(inode)) { |
0b81d077 | 428 | err = fscrypt_get_encryption_info(inode); |
fcc85a4d JK |
429 | if (err) |
430 | return 0; | |
ae108668 CY |
431 | if (!f2fs_encrypted_inode(inode)) |
432 | return -ENOKEY; | |
fcc85a4d JK |
433 | } |
434 | ||
b3d208f9 | 435 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
436 | err = f2fs_convert_inline_inode(inode); |
437 | if (err) | |
438 | return err; | |
b3d208f9 | 439 | |
fbfa2cc5 JK |
440 | file_accessed(file); |
441 | vma->vm_ops = &f2fs_file_vm_ops; | |
442 | return 0; | |
443 | } | |
444 | ||
fcc85a4d JK |
445 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
446 | { | |
447 | int ret = generic_file_open(inode, filp); | |
33b13951 | 448 | struct dentry *dir; |
fcc85a4d JK |
449 | |
450 | if (!ret && f2fs_encrypted_inode(inode)) { | |
0b81d077 | 451 | ret = fscrypt_get_encryption_info(inode); |
fcc85a4d | 452 | if (ret) |
ae108668 | 453 | return -EACCES; |
0b81d077 | 454 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 455 | return -ENOKEY; |
fcc85a4d | 456 | } |
33b13951 JK |
457 | dir = dget_parent(file_dentry(filp)); |
458 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
459 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
460 | dput(dir); | |
8074bb51 | 461 | return -EPERM; |
33b13951 JK |
462 | } |
463 | dput(dir); | |
fcc85a4d JK |
464 | return ret; |
465 | } | |
466 | ||
b292dcab | 467 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 468 | { |
4081363f | 469 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 470 | struct f2fs_node *raw_node; |
19b2c30d | 471 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
472 | __le32 *addr; |
473 | ||
45590710 | 474 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
475 | addr = blkaddr_in_node(raw_node) + ofs; |
476 | ||
6c311ec6 | 477 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
478 | block_t blkaddr = le32_to_cpu(*addr); |
479 | if (blkaddr == NULL_ADDR) | |
480 | continue; | |
481 | ||
e1509cf2 | 482 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 483 | set_data_blkaddr(dn); |
fbfa2cc5 | 484 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 485 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 486 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
487 | nr_free++; |
488 | } | |
19b2c30d | 489 | |
fbfa2cc5 | 490 | if (nr_free) { |
19b2c30d CY |
491 | pgoff_t fofs; |
492 | /* | |
493 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
494 | * we will invalidate all blkaddr in the whole range. | |
495 | */ | |
496 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 497 | dn->inode) + ofs; |
19b2c30d | 498 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 499 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
500 | } |
501 | dn->ofs_in_node = ofs; | |
51dd6249 | 502 | |
d0239e1b | 503 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
504 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
505 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
506 | return nr_free; |
507 | } | |
508 | ||
509 | void truncate_data_blocks(struct dnode_of_data *dn) | |
510 | { | |
511 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
512 | } | |
513 | ||
0bfcfcca | 514 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 515 | bool cache_only) |
fbfa2cc5 | 516 | { |
09cbfeaf KS |
517 | unsigned offset = from & (PAGE_SIZE - 1); |
518 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 519 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
520 | struct page *page; |
521 | ||
43f3eae1 | 522 | if (!offset && !cache_only) |
b3d208f9 | 523 | return 0; |
fbfa2cc5 | 524 | |
43f3eae1 | 525 | if (cache_only) { |
34b5d5c2 | 526 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
527 | if (page && PageUptodate(page)) |
528 | goto truncate_out; | |
529 | f2fs_put_page(page, 1); | |
b3d208f9 | 530 | return 0; |
43f3eae1 | 531 | } |
fbfa2cc5 | 532 | |
a56c7c6f | 533 | page = get_lock_data_page(inode, index, true); |
43f3eae1 JK |
534 | if (IS_ERR(page)) |
535 | return 0; | |
536 | truncate_out: | |
fec1d657 | 537 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 538 | zero_user(page, offset, PAGE_SIZE - offset); |
0b81d077 JK |
539 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
540 | !S_ISREG(inode->i_mode)) | |
0bfcfcca | 541 | set_page_dirty(page); |
fbfa2cc5 | 542 | f2fs_put_page(page, 1); |
b3d208f9 | 543 | return 0; |
fbfa2cc5 JK |
544 | } |
545 | ||
764aa3e9 | 546 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 547 | { |
4081363f | 548 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
549 | unsigned int blocksize = inode->i_sb->s_blocksize; |
550 | struct dnode_of_data dn; | |
551 | pgoff_t free_from; | |
9ffe0fb5 | 552 | int count = 0, err = 0; |
b3d208f9 | 553 | struct page *ipage; |
0bfcfcca | 554 | bool truncate_page = false; |
fbfa2cc5 | 555 | |
51dd6249 NJ |
556 | trace_f2fs_truncate_blocks_enter(inode, from); |
557 | ||
f7ef9b83 | 558 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 559 | |
09210c97 CY |
560 | if (free_from >= sbi->max_file_blocks) |
561 | goto free_partial; | |
562 | ||
764aa3e9 JK |
563 | if (lock) |
564 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 565 | |
b3d208f9 JK |
566 | ipage = get_node_page(sbi, inode->i_ino); |
567 | if (IS_ERR(ipage)) { | |
568 | err = PTR_ERR(ipage); | |
569 | goto out; | |
570 | } | |
571 | ||
572 | if (f2fs_has_inline_data(inode)) { | |
0bfcfcca CY |
573 | if (truncate_inline_inode(ipage, from)) |
574 | set_page_dirty(ipage); | |
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); |
b56ab837 | 635 | f2fs_mark_inode_dirty_sync(inode); |
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 JK |
681 | int err; |
682 | ||
31051c85 | 683 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
684 | if (err) |
685 | return err; | |
686 | ||
09db6a2e | 687 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d | 688 | if (f2fs_encrypted_inode(inode) && |
0b81d077 | 689 | fscrypt_get_encryption_info(inode)) |
fcc85a4d JK |
690 | return -EACCES; |
691 | ||
3c454145 | 692 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 693 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 694 | err = f2fs_truncate(inode); |
b0154891 CY |
695 | if (err) |
696 | return err; | |
2c4db1a6 | 697 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
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 | } |
fbfa2cc5 JK |
713 | } |
714 | ||
715 | __setattr_copy(inode, attr); | |
716 | ||
717 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 718 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
719 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
720 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
721 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
722 | } |
723 | } | |
724 | ||
b56ab837 | 725 | f2fs_mark_inode_dirty_sync(inode); |
fbfa2cc5 JK |
726 | return err; |
727 | } | |
728 | ||
729 | const struct inode_operations f2fs_file_inode_operations = { | |
730 | .getattr = f2fs_getattr, | |
731 | .setattr = f2fs_setattr, | |
732 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 733 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 734 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 735 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 736 | #endif |
9ab70134 | 737 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
738 | }; |
739 | ||
6394328a | 740 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
741 | loff_t start, loff_t len) |
742 | { | |
4081363f | 743 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
744 | struct page *page; |
745 | ||
746 | if (!len) | |
6394328a | 747 | return 0; |
fbfa2cc5 | 748 | |
2c4db1a6 | 749 | f2fs_balance_fs(sbi, true); |
bd43df02 | 750 | |
e479556b | 751 | f2fs_lock_op(sbi); |
64aa7ed9 | 752 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 753 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 754 | |
6394328a CY |
755 | if (IS_ERR(page)) |
756 | return PTR_ERR(page); | |
757 | ||
fec1d657 | 758 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
759 | zero_user(page, start, len); |
760 | set_page_dirty(page); | |
761 | f2fs_put_page(page, 1); | |
762 | return 0; | |
fbfa2cc5 JK |
763 | } |
764 | ||
765 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
766 | { | |
fbfa2cc5 JK |
767 | int err; |
768 | ||
ea58711e | 769 | while (pg_start < pg_end) { |
fbfa2cc5 | 770 | struct dnode_of_data dn; |
ea58711e | 771 | pgoff_t end_offset, count; |
9eaeba70 | 772 | |
fbfa2cc5 | 773 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 774 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 775 | if (err) { |
ea58711e CY |
776 | if (err == -ENOENT) { |
777 | pg_start++; | |
fbfa2cc5 | 778 | continue; |
ea58711e | 779 | } |
fbfa2cc5 JK |
780 | return err; |
781 | } | |
782 | ||
81ca7350 | 783 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
784 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
785 | ||
786 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
787 | ||
788 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 789 | f2fs_put_dnode(&dn); |
ea58711e CY |
790 | |
791 | pg_start += count; | |
fbfa2cc5 JK |
792 | } |
793 | return 0; | |
794 | } | |
795 | ||
a66c7b2f | 796 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
797 | { |
798 | pgoff_t pg_start, pg_end; | |
799 | loff_t off_start, off_end; | |
b9d777b8 | 800 | int ret; |
fbfa2cc5 | 801 | |
b9d777b8 JK |
802 | ret = f2fs_convert_inline_inode(inode); |
803 | if (ret) | |
804 | return ret; | |
9ffe0fb5 | 805 | |
09cbfeaf KS |
806 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
807 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 808 | |
09cbfeaf KS |
809 | off_start = offset & (PAGE_SIZE - 1); |
810 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
811 | |
812 | if (pg_start == pg_end) { | |
6394328a | 813 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 814 | off_end - off_start); |
6394328a CY |
815 | if (ret) |
816 | return ret; | |
fbfa2cc5 | 817 | } else { |
6394328a CY |
818 | if (off_start) { |
819 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 820 | PAGE_SIZE - off_start); |
6394328a CY |
821 | if (ret) |
822 | return ret; | |
823 | } | |
824 | if (off_end) { | |
825 | ret = fill_zero(inode, pg_end, 0, off_end); | |
826 | if (ret) | |
827 | return ret; | |
828 | } | |
fbfa2cc5 JK |
829 | |
830 | if (pg_start < pg_end) { | |
831 | struct address_space *mapping = inode->i_mapping; | |
832 | loff_t blk_start, blk_end; | |
4081363f | 833 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 834 | |
2c4db1a6 | 835 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 836 | |
09cbfeaf KS |
837 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
838 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
fbfa2cc5 JK |
839 | truncate_inode_pages_range(mapping, blk_start, |
840 | blk_end - 1); | |
39936837 | 841 | |
e479556b | 842 | f2fs_lock_op(sbi); |
fbfa2cc5 | 843 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 844 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
845 | } |
846 | } | |
847 | ||
fbfa2cc5 JK |
848 | return ret; |
849 | } | |
850 | ||
0a2aa8fb JK |
851 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
852 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
853 | { |
854 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
855 | struct dnode_of_data dn; | |
0a2aa8fb | 856 | int ret, done, i; |
ecbaa406 | 857 | |
0a2aa8fb | 858 | next_dnode: |
6e2c64ad | 859 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 860 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
861 | if (ret && ret != -ENOENT) { |
862 | return ret; | |
863 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
864 | if (dn.max_level == 0) |
865 | return -ENOENT; | |
866 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
867 | blkaddr += done; | |
868 | do_replace += done; | |
869 | goto next; | |
870 | } | |
871 | ||
872 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
873 | dn.ofs_in_node, len); | |
874 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
875 | *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
876 | if (!is_checkpointed_data(sbi, *blkaddr)) { | |
877 | ||
878 | if (test_opt(sbi, LFS)) { | |
879 | f2fs_put_dnode(&dn); | |
880 | return -ENOTSUPP; | |
881 | } | |
882 | ||
6e2c64ad | 883 | /* do not invalidate this block address */ |
f28b3434 | 884 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 885 | *do_replace = 1; |
b4ace337 | 886 | } |
6e2c64ad | 887 | } |
0a2aa8fb JK |
888 | f2fs_put_dnode(&dn); |
889 | next: | |
890 | len -= done; | |
891 | off += done; | |
892 | if (len) | |
893 | goto next_dnode; | |
894 | return 0; | |
895 | } | |
b4ace337 | 896 | |
0a2aa8fb JK |
897 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
898 | int *do_replace, pgoff_t off, int len) | |
899 | { | |
900 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
901 | struct dnode_of_data dn; | |
902 | int ret, i; | |
b4ace337 | 903 | |
0a2aa8fb JK |
904 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
905 | if (*do_replace == 0) | |
906 | continue; | |
b4ace337 | 907 | |
0a2aa8fb JK |
908 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
909 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
910 | if (ret) { | |
911 | dec_valid_block_count(sbi, inode, 1); | |
912 | invalidate_blocks(sbi, *blkaddr); | |
913 | } else { | |
914 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 915 | } |
0a2aa8fb JK |
916 | f2fs_put_dnode(&dn); |
917 | } | |
918 | return 0; | |
919 | } | |
920 | ||
921 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
922 | block_t *blkaddr, int *do_replace, | |
923 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
924 | { | |
925 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
926 | pgoff_t i = 0; | |
927 | int ret; | |
36abef4e | 928 | |
0a2aa8fb JK |
929 | while (i < len) { |
930 | if (blkaddr[i] == NULL_ADDR && !full) { | |
931 | i++; | |
932 | continue; | |
6e2c64ad | 933 | } |
b4ace337 | 934 | |
0a2aa8fb JK |
935 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
936 | struct dnode_of_data dn; | |
937 | struct node_info ni; | |
938 | size_t new_size; | |
939 | pgoff_t ilen; | |
b4ace337 | 940 | |
0a2aa8fb JK |
941 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
942 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
943 | if (ret) | |
944 | return ret; | |
b4ace337 | 945 | |
0a2aa8fb JK |
946 | get_node_info(sbi, dn.nid, &ni); |
947 | ilen = min((pgoff_t) | |
948 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
949 | dn.ofs_in_node, len - i); | |
950 | do { | |
951 | dn.data_blkaddr = datablock_addr(dn.node_page, | |
952 | dn.ofs_in_node); | |
953 | truncate_data_blocks_range(&dn, 1); | |
954 | ||
955 | if (do_replace[i]) { | |
956 | f2fs_i_blocks_write(src_inode, | |
957 | 1, false); | |
958 | f2fs_i_blocks_write(dst_inode, | |
959 | 1, true); | |
960 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
961 | blkaddr[i], ni.version, true, false); | |
962 | ||
963 | do_replace[i] = 0; | |
964 | } | |
965 | dn.ofs_in_node++; | |
966 | i++; | |
967 | new_size = (dst + i) << PAGE_SHIFT; | |
968 | if (dst_inode->i_size < new_size) | |
969 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 970 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 971 | |
0a2aa8fb JK |
972 | f2fs_put_dnode(&dn); |
973 | } else { | |
974 | struct page *psrc, *pdst; | |
975 | ||
976 | psrc = get_lock_data_page(src_inode, src + i, true); | |
977 | if (IS_ERR(psrc)) | |
978 | return PTR_ERR(psrc); | |
979 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
980 | true); | |
981 | if (IS_ERR(pdst)) { | |
982 | f2fs_put_page(psrc, 1); | |
983 | return PTR_ERR(pdst); | |
984 | } | |
985 | f2fs_copy_page(psrc, pdst); | |
986 | set_page_dirty(pdst); | |
987 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 988 | f2fs_put_page(psrc, 1); |
b4ace337 | 989 | |
0a2aa8fb JK |
990 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
991 | if (ret) | |
992 | return ret; | |
993 | i++; | |
994 | } | |
6e2c64ad JK |
995 | } |
996 | return 0; | |
0a2aa8fb | 997 | } |
b4ace337 | 998 | |
0a2aa8fb JK |
999 | static int __exchange_data_block(struct inode *src_inode, |
1000 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1001 | pgoff_t len, bool full) |
0a2aa8fb JK |
1002 | { |
1003 | block_t *src_blkaddr; | |
1004 | int *do_replace; | |
363cad7f | 1005 | pgoff_t olen; |
0a2aa8fb JK |
1006 | int ret; |
1007 | ||
363cad7f JK |
1008 | while (len) { |
1009 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1010 | |
363cad7f JK |
1011 | src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
1012 | if (!src_blkaddr) | |
1013 | return -ENOMEM; | |
0a2aa8fb | 1014 | |
363cad7f JK |
1015 | do_replace = f2fs_kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
1016 | if (!do_replace) { | |
1017 | kvfree(src_blkaddr); | |
1018 | return -ENOMEM; | |
1019 | } | |
0a2aa8fb | 1020 | |
363cad7f JK |
1021 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1022 | do_replace, src, olen); | |
1023 | if (ret) | |
1024 | goto roll_back; | |
0a2aa8fb | 1025 | |
363cad7f JK |
1026 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1027 | do_replace, src, dst, olen, full); | |
1028 | if (ret) | |
1029 | goto roll_back; | |
1030 | ||
1031 | src += olen; | |
1032 | dst += olen; | |
1033 | len -= olen; | |
1034 | ||
1035 | kvfree(src_blkaddr); | |
1036 | kvfree(do_replace); | |
1037 | } | |
0a2aa8fb JK |
1038 | return 0; |
1039 | ||
1040 | roll_back: | |
1041 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1042 | kvfree(src_blkaddr); | |
1043 | kvfree(do_replace); | |
6e2c64ad JK |
1044 | return ret; |
1045 | } | |
b4ace337 | 1046 | |
6e2c64ad JK |
1047 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1048 | { | |
1049 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1050 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1051 | int ret; |
6e2c64ad | 1052 | |
0a2aa8fb JK |
1053 | f2fs_balance_fs(sbi, true); |
1054 | f2fs_lock_op(sbi); | |
5f281fab JK |
1055 | |
1056 | f2fs_drop_extent_tree(inode); | |
1057 | ||
0a2aa8fb JK |
1058 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1059 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1060 | return ret; |
1061 | } | |
1062 | ||
1063 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1064 | { | |
1065 | pgoff_t pg_start, pg_end; | |
1066 | loff_t new_size; | |
1067 | int ret; | |
1068 | ||
b4ace337 CY |
1069 | if (offset + len >= i_size_read(inode)) |
1070 | return -EINVAL; | |
1071 | ||
1072 | /* collapse range should be aligned to block size of f2fs. */ | |
1073 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1074 | return -EINVAL; | |
1075 | ||
b9d777b8 JK |
1076 | ret = f2fs_convert_inline_inode(inode); |
1077 | if (ret) | |
1078 | return ret; | |
97a7b2c2 | 1079 | |
09cbfeaf KS |
1080 | pg_start = offset >> PAGE_SHIFT; |
1081 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 CY |
1082 | |
1083 | /* write out all dirty pages from offset */ | |
1084 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1085 | if (ret) | |
1086 | return ret; | |
1087 | ||
1088 | truncate_pagecache(inode, offset); | |
1089 | ||
1090 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1091 | if (ret) | |
1092 | return ret; | |
1093 | ||
6e2c64ad JK |
1094 | /* write out all moved pages, if possible */ |
1095 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1096 | truncate_pagecache(inode, offset); | |
1097 | ||
b4ace337 | 1098 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1099 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1100 | |
1101 | ret = truncate_blocks(inode, new_size, true); | |
1102 | if (!ret) | |
fc9581c8 | 1103 | f2fs_i_size_write(inode, new_size); |
b4ace337 CY |
1104 | |
1105 | return ret; | |
1106 | } | |
1107 | ||
6e961949 CY |
1108 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1109 | pgoff_t end) | |
1110 | { | |
1111 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1112 | pgoff_t index = start; | |
1113 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1114 | blkcnt_t count = 0; | |
1115 | int ret; | |
1116 | ||
1117 | for (; index < end; index++, dn->ofs_in_node++) { | |
1118 | if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR) | |
1119 | count++; | |
1120 | } | |
1121 | ||
1122 | dn->ofs_in_node = ofs_in_node; | |
1123 | ret = reserve_new_blocks(dn, count); | |
1124 | if (ret) | |
1125 | return ret; | |
1126 | ||
1127 | dn->ofs_in_node = ofs_in_node; | |
1128 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
1129 | dn->data_blkaddr = | |
1130 | datablock_addr(dn->node_page, dn->ofs_in_node); | |
1131 | /* | |
1132 | * reserve_new_blocks will not guarantee entire block | |
1133 | * allocation. | |
1134 | */ | |
1135 | if (dn->data_blkaddr == NULL_ADDR) { | |
1136 | ret = -ENOSPC; | |
1137 | break; | |
1138 | } | |
1139 | if (dn->data_blkaddr != NEW_ADDR) { | |
1140 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1141 | dn->data_blkaddr = NEW_ADDR; | |
1142 | set_data_blkaddr(dn); | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1147 | ||
1148 | return ret; | |
1149 | } | |
1150 | ||
75cd4e09 CY |
1151 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1152 | int mode) | |
1153 | { | |
1154 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1155 | struct address_space *mapping = inode->i_mapping; | |
1156 | pgoff_t index, pg_start, pg_end; | |
1157 | loff_t new_size = i_size_read(inode); | |
1158 | loff_t off_start, off_end; | |
1159 | int ret = 0; | |
1160 | ||
75cd4e09 CY |
1161 | ret = inode_newsize_ok(inode, (len + offset)); |
1162 | if (ret) | |
1163 | return ret; | |
1164 | ||
b9d777b8 JK |
1165 | ret = f2fs_convert_inline_inode(inode); |
1166 | if (ret) | |
1167 | return ret; | |
75cd4e09 CY |
1168 | |
1169 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1170 | if (ret) | |
1171 | return ret; | |
1172 | ||
1173 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1174 | ||
09cbfeaf KS |
1175 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1176 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1177 | |
09cbfeaf KS |
1178 | off_start = offset & (PAGE_SIZE - 1); |
1179 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1180 | |
1181 | if (pg_start == pg_end) { | |
6394328a CY |
1182 | ret = fill_zero(inode, pg_start, off_start, |
1183 | off_end - off_start); | |
1184 | if (ret) | |
1185 | return ret; | |
1186 | ||
75cd4e09 CY |
1187 | if (offset + len > new_size) |
1188 | new_size = offset + len; | |
1189 | new_size = max_t(loff_t, new_size, offset + len); | |
1190 | } else { | |
1191 | if (off_start) { | |
6394328a | 1192 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1193 | PAGE_SIZE - off_start); |
6394328a CY |
1194 | if (ret) |
1195 | return ret; | |
1196 | ||
75cd4e09 | 1197 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1198 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1199 | } |
1200 | ||
6e961949 | 1201 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1202 | struct dnode_of_data dn; |
6e961949 CY |
1203 | unsigned int end_offset; |
1204 | pgoff_t end; | |
75cd4e09 CY |
1205 | |
1206 | f2fs_lock_op(sbi); | |
1207 | ||
6e961949 CY |
1208 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1209 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1210 | if (ret) { |
1211 | f2fs_unlock_op(sbi); | |
1212 | goto out; | |
1213 | } | |
1214 | ||
6e961949 CY |
1215 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1216 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1217 | ||
1218 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1219 | f2fs_put_dnode(&dn); |
1220 | f2fs_unlock_op(sbi); | |
6e961949 CY |
1221 | if (ret) |
1222 | goto out; | |
75cd4e09 | 1223 | |
6e961949 | 1224 | index = end; |
75cd4e09 | 1225 | new_size = max_t(loff_t, new_size, |
6e961949 | 1226 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1227 | } |
1228 | ||
1229 | if (off_end) { | |
6394328a CY |
1230 | ret = fill_zero(inode, pg_end, 0, off_end); |
1231 | if (ret) | |
1232 | goto out; | |
1233 | ||
75cd4e09 CY |
1234 | new_size = max_t(loff_t, new_size, offset + len); |
1235 | } | |
1236 | } | |
1237 | ||
1238 | out: | |
ee6d182f | 1239 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1240 | f2fs_i_size_write(inode, new_size); |
75cd4e09 CY |
1241 | |
1242 | return ret; | |
1243 | } | |
1244 | ||
f62185d0 CY |
1245 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1246 | { | |
1247 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1248 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1249 | loff_t new_size; |
6e2c64ad | 1250 | int ret = 0; |
f62185d0 | 1251 | |
f62185d0 CY |
1252 | new_size = i_size_read(inode) + len; |
1253 | if (new_size > inode->i_sb->s_maxbytes) | |
1254 | return -EFBIG; | |
1255 | ||
1256 | if (offset >= i_size_read(inode)) | |
1257 | return -EINVAL; | |
1258 | ||
1259 | /* insert range should be aligned to block size of f2fs. */ | |
1260 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1261 | return -EINVAL; | |
1262 | ||
b9d777b8 JK |
1263 | ret = f2fs_convert_inline_inode(inode); |
1264 | if (ret) | |
1265 | return ret; | |
97a7b2c2 | 1266 | |
2c4db1a6 | 1267 | f2fs_balance_fs(sbi, true); |
2a340760 | 1268 | |
f62185d0 CY |
1269 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1270 | if (ret) | |
1271 | return ret; | |
1272 | ||
1273 | /* write out all dirty pages from offset */ | |
1274 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1275 | if (ret) | |
1276 | return ret; | |
1277 | ||
1278 | truncate_pagecache(inode, offset); | |
1279 | ||
09cbfeaf KS |
1280 | pg_start = offset >> PAGE_SHIFT; |
1281 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1282 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1283 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1284 | ||
1285 | while (!ret && idx > pg_start) { | |
1286 | nr = idx - pg_start; | |
1287 | if (nr > delta) | |
1288 | nr = delta; | |
1289 | idx -= nr; | |
f62185d0 | 1290 | |
f62185d0 | 1291 | f2fs_lock_op(sbi); |
5f281fab JK |
1292 | f2fs_drop_extent_tree(inode); |
1293 | ||
0a2aa8fb JK |
1294 | ret = __exchange_data_block(inode, inode, idx, |
1295 | idx + delta, nr, false); | |
f62185d0 CY |
1296 | f2fs_unlock_op(sbi); |
1297 | } | |
1298 | ||
6e2c64ad JK |
1299 | /* write out all moved pages, if possible */ |
1300 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1301 | truncate_pagecache(inode, offset); | |
1302 | ||
1303 | if (!ret) | |
fc9581c8 | 1304 | f2fs_i_size_write(inode, new_size); |
f62185d0 CY |
1305 | return ret; |
1306 | } | |
1307 | ||
fbfa2cc5 JK |
1308 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1309 | loff_t len, int mode) | |
1310 | { | |
4081363f | 1311 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1312 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1313 | pgoff_t pg_end; | |
fbfa2cc5 | 1314 | loff_t new_size = i_size_read(inode); |
e12dd7bd JK |
1315 | loff_t off_end; |
1316 | int ret; | |
fbfa2cc5 JK |
1317 | |
1318 | ret = inode_newsize_ok(inode, (len + offset)); | |
1319 | if (ret) | |
1320 | return ret; | |
1321 | ||
b9d777b8 JK |
1322 | ret = f2fs_convert_inline_inode(inode); |
1323 | if (ret) | |
1324 | return ret; | |
9e09fc85 | 1325 | |
2c4db1a6 | 1326 | f2fs_balance_fs(sbi, true); |
2a340760 | 1327 | |
e12dd7bd | 1328 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1329 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1330 | |
e12dd7bd JK |
1331 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1332 | map.m_len = pg_end - map.m_lblk; | |
1333 | if (off_end) | |
1334 | map.m_len++; | |
ead43275 | 1335 | |
e12dd7bd JK |
1336 | ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1337 | if (ret) { | |
1338 | pgoff_t last_off; | |
fbfa2cc5 | 1339 | |
e12dd7bd JK |
1340 | if (!map.m_len) |
1341 | return ret; | |
98397ff3 | 1342 | |
e12dd7bd JK |
1343 | last_off = map.m_lblk + map.m_len - 1; |
1344 | ||
1345 | /* update new size to the failed position */ | |
1346 | new_size = (last_off == pg_end) ? offset + len: | |
1347 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1348 | } else { | |
1349 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1350 | } |
1351 | ||
ee6d182f | 1352 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1353 | f2fs_i_size_write(inode, new_size); |
fbfa2cc5 JK |
1354 | |
1355 | return ret; | |
1356 | } | |
1357 | ||
1358 | static long f2fs_fallocate(struct file *file, int mode, | |
1359 | loff_t offset, loff_t len) | |
1360 | { | |
6131ffaa | 1361 | struct inode *inode = file_inode(file); |
587c0a42 | 1362 | long ret = 0; |
fbfa2cc5 | 1363 | |
c998012b CY |
1364 | /* f2fs only support ->fallocate for regular file */ |
1365 | if (!S_ISREG(inode->i_mode)) | |
1366 | return -EINVAL; | |
1367 | ||
f62185d0 CY |
1368 | if (f2fs_encrypted_inode(inode) && |
1369 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1370 | return -EOPNOTSUPP; |
1371 | ||
b4ace337 | 1372 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1373 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1374 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1375 | return -EOPNOTSUPP; |
1376 | ||
5955102c | 1377 | inode_lock(inode); |
3375f696 | 1378 | |
587c0a42 TY |
1379 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1380 | if (offset >= inode->i_size) | |
1381 | goto out; | |
1382 | ||
a66c7b2f | 1383 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1384 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1385 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1386 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1387 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1388 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1389 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1390 | } else { |
fbfa2cc5 | 1391 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1392 | } |
fbfa2cc5 | 1393 | |
3af60a49 | 1394 | if (!ret) { |
078cd827 | 1395 | inode->i_mtime = inode->i_ctime = current_time(inode); |
b56ab837 | 1396 | f2fs_mark_inode_dirty_sync(inode); |
d0239e1b | 1397 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1398 | } |
3375f696 | 1399 | |
587c0a42 | 1400 | out: |
5955102c | 1401 | inode_unlock(inode); |
3375f696 | 1402 | |
c01e2853 | 1403 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1404 | return ret; |
1405 | } | |
1406 | ||
1e84371f JK |
1407 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1408 | { | |
de5307e4 JK |
1409 | /* |
1410 | * f2fs_relase_file is called at every close calls. So we should | |
1411 | * not drop any inmemory pages by close called by other process. | |
1412 | */ | |
1413 | if (!(filp->f_mode & FMODE_WRITE) || | |
1414 | atomic_read(&inode->i_writecount) != 1) | |
1415 | return 0; | |
1416 | ||
1e84371f JK |
1417 | /* some remained atomic pages should discarded */ |
1418 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1419 | drop_inmem_pages(inode); |
1e84371f | 1420 | if (f2fs_is_volatile_file(inode)) { |
91942321 JK |
1421 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1422 | set_inode_flag(inode, FI_DROP_CACHE); | |
1e84371f | 1423 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1424 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1425 | } |
1426 | return 0; | |
1427 | } | |
1428 | ||
fbfa2cc5 JK |
1429 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1430 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1431 | ||
1432 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1433 | { | |
1434 | if (S_ISDIR(mode)) | |
1435 | return flags; | |
1436 | else if (S_ISREG(mode)) | |
1437 | return flags & F2FS_REG_FLMASK; | |
1438 | else | |
1439 | return flags & F2FS_OTHER_FLMASK; | |
1440 | } | |
1441 | ||
52656e6c | 1442 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1443 | { |
6131ffaa | 1444 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1445 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1446 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1447 | return put_user(flags, (int __user *)arg); | |
1448 | } | |
fbfa2cc5 | 1449 | |
52656e6c JK |
1450 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1451 | { | |
1452 | struct inode *inode = file_inode(filp); | |
1453 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
69494229 | 1454 | unsigned int flags; |
52656e6c JK |
1455 | unsigned int oldflags; |
1456 | int ret; | |
fbfa2cc5 | 1457 | |
7fb17fe4 CY |
1458 | if (!inode_owner_or_capable(inode)) |
1459 | return -EACCES; | |
1460 | ||
1461 | if (get_user(flags, (int __user *)arg)) | |
1462 | return -EFAULT; | |
1463 | ||
52656e6c JK |
1464 | ret = mnt_want_write_file(filp); |
1465 | if (ret) | |
1466 | return ret; | |
fbfa2cc5 | 1467 | |
52656e6c | 1468 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1469 | |
5955102c | 1470 | inode_lock(inode); |
fbfa2cc5 | 1471 | |
52656e6c | 1472 | oldflags = fi->i_flags; |
fbfa2cc5 | 1473 | |
52656e6c JK |
1474 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1475 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1476 | inode_unlock(inode); |
52656e6c JK |
1477 | ret = -EPERM; |
1478 | goto out; | |
fbfa2cc5 | 1479 | } |
52656e6c | 1480 | } |
fbfa2cc5 | 1481 | |
52656e6c JK |
1482 | flags = flags & FS_FL_USER_MODIFIABLE; |
1483 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1484 | fi->i_flags = flags; | |
5955102c | 1485 | inode_unlock(inode); |
fbfa2cc5 | 1486 | |
078cd827 | 1487 | inode->i_ctime = current_time(inode); |
205b9822 | 1488 | f2fs_set_inode_flags(inode); |
fbfa2cc5 | 1489 | out: |
52656e6c JK |
1490 | mnt_drop_write_file(filp); |
1491 | return ret; | |
1492 | } | |
4b2fecc8 | 1493 | |
d49f3e89 CY |
1494 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1495 | { | |
1496 | struct inode *inode = file_inode(filp); | |
1497 | ||
1498 | return put_user(inode->i_generation, (int __user *)arg); | |
1499 | } | |
1500 | ||
88b88a66 JK |
1501 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1502 | { | |
1503 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1504 | int ret; |
88b88a66 JK |
1505 | |
1506 | if (!inode_owner_or_capable(inode)) | |
1507 | return -EACCES; | |
1508 | ||
7fb17fe4 CY |
1509 | ret = mnt_want_write_file(filp); |
1510 | if (ret) | |
1511 | return ret; | |
1512 | ||
0fac558b CY |
1513 | inode_lock(inode); |
1514 | ||
1e84371f | 1515 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1516 | goto out; |
88b88a66 | 1517 | |
f4c9c743 CY |
1518 | ret = f2fs_convert_inline_inode(inode); |
1519 | if (ret) | |
7fb17fe4 | 1520 | goto out; |
88b88a66 | 1521 | |
91942321 | 1522 | set_inode_flag(inode, FI_ATOMIC_FILE); |
d0239e1b JK |
1523 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1524 | ||
c27753d6 | 1525 | if (!get_dirty_pages(inode)) |
7fb17fe4 | 1526 | goto out; |
c27753d6 JK |
1527 | |
1528 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
1beba1b3 | 1529 | "Unexpected flush for atomic writes: ino=%lu, npages=%lld", |
c27753d6 JK |
1530 | inode->i_ino, get_dirty_pages(inode)); |
1531 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
1532 | if (ret) | |
91942321 | 1533 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
7fb17fe4 | 1534 | out: |
0fac558b | 1535 | inode_unlock(inode); |
7fb17fe4 | 1536 | mnt_drop_write_file(filp); |
c27753d6 | 1537 | return ret; |
88b88a66 JK |
1538 | } |
1539 | ||
1540 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1541 | { | |
1542 | struct inode *inode = file_inode(filp); | |
1543 | int ret; | |
1544 | ||
1545 | if (!inode_owner_or_capable(inode)) | |
1546 | return -EACCES; | |
1547 | ||
1548 | ret = mnt_want_write_file(filp); | |
1549 | if (ret) | |
1550 | return ret; | |
1551 | ||
0fac558b CY |
1552 | inode_lock(inode); |
1553 | ||
7fb17fe4 CY |
1554 | if (f2fs_is_volatile_file(inode)) |
1555 | goto err_out; | |
1556 | ||
6282adbf | 1557 | if (f2fs_is_atomic_file(inode)) { |
91942321 | 1558 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
29b96b54 | 1559 | ret = commit_inmem_pages(inode); |
447135a8 | 1560 | if (ret) { |
91942321 | 1561 | set_inode_flag(inode, FI_ATOMIC_FILE); |
edb27dee | 1562 | goto err_out; |
447135a8 | 1563 | } |
6282adbf | 1564 | } |
88b88a66 | 1565 | |
608514de | 1566 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
edb27dee | 1567 | err_out: |
0fac558b | 1568 | inode_unlock(inode); |
88b88a66 JK |
1569 | mnt_drop_write_file(filp); |
1570 | return ret; | |
1571 | } | |
1572 | ||
02a1335f JK |
1573 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1574 | { | |
1575 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1576 | int ret; |
02a1335f JK |
1577 | |
1578 | if (!inode_owner_or_capable(inode)) | |
1579 | return -EACCES; | |
1580 | ||
7fb17fe4 CY |
1581 | ret = mnt_want_write_file(filp); |
1582 | if (ret) | |
1583 | return ret; | |
1584 | ||
0fac558b CY |
1585 | inode_lock(inode); |
1586 | ||
1e84371f | 1587 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1588 | goto out; |
1e84371f | 1589 | |
f4c9c743 CY |
1590 | ret = f2fs_convert_inline_inode(inode); |
1591 | if (ret) | |
7fb17fe4 | 1592 | goto out; |
b3d208f9 | 1593 | |
91942321 | 1594 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1595 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1596 | out: |
0fac558b | 1597 | inode_unlock(inode); |
7fb17fe4 CY |
1598 | mnt_drop_write_file(filp); |
1599 | return ret; | |
02a1335f JK |
1600 | } |
1601 | ||
1e84371f JK |
1602 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1603 | { | |
1604 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1605 | int ret; |
1e84371f JK |
1606 | |
1607 | if (!inode_owner_or_capable(inode)) | |
1608 | return -EACCES; | |
1609 | ||
7fb17fe4 CY |
1610 | ret = mnt_want_write_file(filp); |
1611 | if (ret) | |
1612 | return ret; | |
1613 | ||
0fac558b CY |
1614 | inode_lock(inode); |
1615 | ||
1e84371f | 1616 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1617 | goto out; |
1e84371f | 1618 | |
7fb17fe4 CY |
1619 | if (!f2fs_is_first_block_written(inode)) { |
1620 | ret = truncate_partial_data_page(inode, 0, true); | |
1621 | goto out; | |
1622 | } | |
3c6c2beb | 1623 | |
7fb17fe4 CY |
1624 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1625 | out: | |
0fac558b | 1626 | inode_unlock(inode); |
7fb17fe4 CY |
1627 | mnt_drop_write_file(filp); |
1628 | return ret; | |
1e84371f JK |
1629 | } |
1630 | ||
1631 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1632 | { | |
1633 | struct inode *inode = file_inode(filp); | |
1634 | int ret; | |
1635 | ||
1636 | if (!inode_owner_or_capable(inode)) | |
1637 | return -EACCES; | |
1638 | ||
1639 | ret = mnt_want_write_file(filp); | |
1640 | if (ret) | |
1641 | return ret; | |
1642 | ||
0fac558b CY |
1643 | inode_lock(inode); |
1644 | ||
26dc3d44 | 1645 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1646 | drop_inmem_pages(inode); |
732d5648 | 1647 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1648 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
608514de | 1649 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1650 | } |
de6a8ec9 | 1651 | |
0fac558b CY |
1652 | inode_unlock(inode); |
1653 | ||
1e84371f | 1654 | mnt_drop_write_file(filp); |
d0239e1b | 1655 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1656 | return ret; |
1657 | } | |
1658 | ||
1abff93d JK |
1659 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1660 | { | |
1661 | struct inode *inode = file_inode(filp); | |
1662 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1663 | struct super_block *sb = sbi->sb; | |
1664 | __u32 in; | |
7fb17fe4 | 1665 | int ret; |
1abff93d JK |
1666 | |
1667 | if (!capable(CAP_SYS_ADMIN)) | |
1668 | return -EPERM; | |
1669 | ||
1670 | if (get_user(in, (__u32 __user *)arg)) | |
1671 | return -EFAULT; | |
1672 | ||
7fb17fe4 CY |
1673 | ret = mnt_want_write_file(filp); |
1674 | if (ret) | |
1675 | return ret; | |
1676 | ||
1abff93d JK |
1677 | switch (in) { |
1678 | case F2FS_GOING_DOWN_FULLSYNC: | |
1679 | sb = freeze_bdev(sb->s_bdev); | |
1680 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1681 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1682 | thaw_bdev(sb->s_bdev, sb); |
1683 | } | |
1684 | break; | |
1685 | case F2FS_GOING_DOWN_METASYNC: | |
1686 | /* do checkpoint only */ | |
1687 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1688 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1689 | break; |
1690 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1691 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1692 | break; |
c912a829 JK |
1693 | case F2FS_GOING_DOWN_METAFLUSH: |
1694 | sync_meta_pages(sbi, META, LONG_MAX); | |
38f91ca8 | 1695 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1696 | break; |
1abff93d | 1697 | default: |
7fb17fe4 CY |
1698 | ret = -EINVAL; |
1699 | goto out; | |
1abff93d | 1700 | } |
d0239e1b | 1701 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1702 | out: |
1703 | mnt_drop_write_file(filp); | |
1704 | return ret; | |
1abff93d JK |
1705 | } |
1706 | ||
52656e6c JK |
1707 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1708 | { | |
1709 | struct inode *inode = file_inode(filp); | |
1710 | struct super_block *sb = inode->i_sb; | |
1711 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1712 | struct fstrim_range range; | |
1713 | int ret; | |
4b2fecc8 | 1714 | |
52656e6c JK |
1715 | if (!capable(CAP_SYS_ADMIN)) |
1716 | return -EPERM; | |
4b2fecc8 | 1717 | |
52656e6c JK |
1718 | if (!blk_queue_discard(q)) |
1719 | return -EOPNOTSUPP; | |
4b2fecc8 | 1720 | |
52656e6c JK |
1721 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1722 | sizeof(range))) | |
1723 | return -EFAULT; | |
4b2fecc8 | 1724 | |
7fb17fe4 CY |
1725 | ret = mnt_want_write_file(filp); |
1726 | if (ret) | |
1727 | return ret; | |
1728 | ||
52656e6c JK |
1729 | range.minlen = max((unsigned int)range.minlen, |
1730 | q->limits.discard_granularity); | |
1731 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1732 | mnt_drop_write_file(filp); |
52656e6c JK |
1733 | if (ret < 0) |
1734 | return ret; | |
4b2fecc8 | 1735 | |
52656e6c JK |
1736 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1737 | sizeof(range))) | |
1738 | return -EFAULT; | |
d0239e1b | 1739 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1740 | return 0; |
1741 | } | |
1742 | ||
f424f664 JK |
1743 | static bool uuid_is_nonzero(__u8 u[16]) |
1744 | { | |
1745 | int i; | |
1746 | ||
1747 | for (i = 0; i < 16; i++) | |
1748 | if (u[i]) | |
1749 | return true; | |
1750 | return false; | |
1751 | } | |
1752 | ||
1753 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1754 | { | |
0b81d077 | 1755 | struct fscrypt_policy policy; |
f424f664 JK |
1756 | struct inode *inode = file_inode(filp); |
1757 | ||
0b81d077 JK |
1758 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
1759 | sizeof(policy))) | |
f424f664 JK |
1760 | return -EFAULT; |
1761 | ||
d0239e1b | 1762 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1763 | |
ba63f23d | 1764 | return fscrypt_process_policy(filp, &policy); |
f424f664 JK |
1765 | } |
1766 | ||
1767 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1768 | { | |
0b81d077 | 1769 | struct fscrypt_policy policy; |
f424f664 JK |
1770 | struct inode *inode = file_inode(filp); |
1771 | int err; | |
1772 | ||
0b81d077 | 1773 | err = fscrypt_get_policy(inode, &policy); |
f424f664 JK |
1774 | if (err) |
1775 | return err; | |
1776 | ||
0b81d077 | 1777 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
f424f664 JK |
1778 | return -EFAULT; |
1779 | return 0; | |
f424f664 JK |
1780 | } |
1781 | ||
1782 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1783 | { | |
1784 | struct inode *inode = file_inode(filp); | |
1785 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1786 | int err; | |
1787 | ||
1788 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1789 | return -EOPNOTSUPP; | |
1790 | ||
1791 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1792 | goto got_it; | |
1793 | ||
1794 | err = mnt_want_write_file(filp); | |
1795 | if (err) | |
1796 | return err; | |
1797 | ||
1798 | /* update superblock with uuid */ | |
1799 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1800 | ||
c5bda1c8 | 1801 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1802 | if (err) { |
1803 | /* undo new data */ | |
1804 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1805 | mnt_drop_write_file(filp); |
f424f664 JK |
1806 | return err; |
1807 | } | |
e8240f65 | 1808 | mnt_drop_write_file(filp); |
f424f664 JK |
1809 | got_it: |
1810 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1811 | 16)) | |
1812 | return -EFAULT; | |
1813 | return 0; | |
1814 | } | |
1815 | ||
c1c1b583 CY |
1816 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1817 | { | |
1818 | struct inode *inode = file_inode(filp); | |
1819 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1820 | __u32 sync; |
7fb17fe4 | 1821 | int ret; |
c1c1b583 CY |
1822 | |
1823 | if (!capable(CAP_SYS_ADMIN)) | |
1824 | return -EPERM; | |
1825 | ||
d530d4d8 | 1826 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1827 | return -EFAULT; |
1828 | ||
d530d4d8 CY |
1829 | if (f2fs_readonly(sbi->sb)) |
1830 | return -EROFS; | |
c1c1b583 | 1831 | |
7fb17fe4 CY |
1832 | ret = mnt_want_write_file(filp); |
1833 | if (ret) | |
1834 | return ret; | |
1835 | ||
d530d4d8 | 1836 | if (!sync) { |
7fb17fe4 CY |
1837 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1838 | ret = -EBUSY; | |
1839 | goto out; | |
1840 | } | |
d530d4d8 CY |
1841 | } else { |
1842 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1843 | } |
1844 | ||
7fb17fe4 CY |
1845 | ret = f2fs_gc(sbi, sync); |
1846 | out: | |
1847 | mnt_drop_write_file(filp); | |
1848 | return ret; | |
c1c1b583 CY |
1849 | } |
1850 | ||
456b88e4 CY |
1851 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1852 | { | |
1853 | struct inode *inode = file_inode(filp); | |
1854 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 1855 | int ret; |
456b88e4 CY |
1856 | |
1857 | if (!capable(CAP_SYS_ADMIN)) | |
1858 | return -EPERM; | |
1859 | ||
1860 | if (f2fs_readonly(sbi->sb)) | |
1861 | return -EROFS; | |
1862 | ||
7fb17fe4 CY |
1863 | ret = mnt_want_write_file(filp); |
1864 | if (ret) | |
1865 | return ret; | |
1866 | ||
1867 | ret = f2fs_sync_fs(sbi->sb, 1); | |
1868 | ||
1869 | mnt_drop_write_file(filp); | |
1870 | return ret; | |
456b88e4 CY |
1871 | } |
1872 | ||
d323d005 CY |
1873 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1874 | struct file *filp, | |
1875 | struct f2fs_defragment *range) | |
1876 | { | |
1877 | struct inode *inode = file_inode(filp); | |
da85985c | 1878 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
d323d005 CY |
1879 | struct extent_info ei; |
1880 | pgoff_t pg_start, pg_end; | |
3519e3f9 | 1881 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1882 | unsigned int total = 0, sec_num; |
3519e3f9 | 1883 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
d323d005 CY |
1884 | block_t blk_end = 0; |
1885 | bool fragmented = false; | |
1886 | int err; | |
1887 | ||
1888 | /* if in-place-update policy is enabled, don't waste time here */ | |
1889 | if (need_inplace_update(inode)) | |
1890 | return -EINVAL; | |
1891 | ||
09cbfeaf KS |
1892 | pg_start = range->start >> PAGE_SHIFT; |
1893 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 1894 | |
2c4db1a6 | 1895 | f2fs_balance_fs(sbi, true); |
d323d005 | 1896 | |
5955102c | 1897 | inode_lock(inode); |
d323d005 CY |
1898 | |
1899 | /* writeback all dirty pages in the range */ | |
1900 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1901 | range->start + range->len - 1); |
d323d005 CY |
1902 | if (err) |
1903 | goto out; | |
1904 | ||
1905 | /* | |
1906 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1907 | * block addresses are continuous. | |
1908 | */ | |
1909 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1910 | if (ei.fofs + ei.len >= pg_end) | |
1911 | goto out; | |
1912 | } | |
1913 | ||
1914 | map.m_lblk = pg_start; | |
d323d005 CY |
1915 | |
1916 | /* | |
1917 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1918 | * physical block addresses are continuous even if there are hole(s) | |
1919 | * in logical blocks. | |
1920 | */ | |
1921 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1922 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1923 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1924 | if (err) | |
1925 | goto out; | |
1926 | ||
1927 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1928 | map.m_lblk++; | |
d323d005 CY |
1929 | continue; |
1930 | } | |
1931 | ||
1932 | if (blk_end && blk_end != map.m_pblk) { | |
1933 | fragmented = true; | |
1934 | break; | |
1935 | } | |
1936 | blk_end = map.m_pblk + map.m_len; | |
1937 | ||
1938 | map.m_lblk += map.m_len; | |
d323d005 CY |
1939 | } |
1940 | ||
1941 | if (!fragmented) | |
1942 | goto out; | |
1943 | ||
1944 | map.m_lblk = pg_start; | |
1945 | map.m_len = pg_end - pg_start; | |
1946 | ||
1947 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; | |
1948 | ||
1949 | /* | |
1950 | * make sure there are enough free section for LFS allocation, this can | |
1951 | * avoid defragment running in SSR mode when free section are allocated | |
1952 | * intensively | |
1953 | */ | |
7f3037a5 | 1954 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
1955 | err = -EAGAIN; |
1956 | goto out; | |
1957 | } | |
1958 | ||
1959 | while (map.m_lblk < pg_end) { | |
1960 | pgoff_t idx; | |
1961 | int cnt = 0; | |
1962 | ||
1963 | do_map: | |
a1c1e9b7 | 1964 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1965 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1966 | if (err) | |
1967 | goto clear_out; | |
1968 | ||
1969 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1970 | map.m_lblk++; | |
1971 | continue; | |
1972 | } | |
1973 | ||
91942321 | 1974 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1975 | |
1976 | idx = map.m_lblk; | |
1977 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
1978 | struct page *page; | |
1979 | ||
1980 | page = get_lock_data_page(inode, idx, true); | |
1981 | if (IS_ERR(page)) { | |
1982 | err = PTR_ERR(page); | |
1983 | goto clear_out; | |
1984 | } | |
1985 | ||
1986 | set_page_dirty(page); | |
1987 | f2fs_put_page(page, 1); | |
1988 | ||
1989 | idx++; | |
1990 | cnt++; | |
1991 | total++; | |
1992 | } | |
1993 | ||
1994 | map.m_lblk = idx; | |
d323d005 CY |
1995 | |
1996 | if (idx < pg_end && cnt < blk_per_seg) | |
1997 | goto do_map; | |
1998 | ||
91942321 | 1999 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2000 | |
2001 | err = filemap_fdatawrite(inode->i_mapping); | |
2002 | if (err) | |
2003 | goto out; | |
2004 | } | |
2005 | clear_out: | |
91942321 | 2006 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2007 | out: |
5955102c | 2008 | inode_unlock(inode); |
d323d005 | 2009 | if (!err) |
09cbfeaf | 2010 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2011 | return err; |
2012 | } | |
2013 | ||
2014 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2015 | { | |
2016 | struct inode *inode = file_inode(filp); | |
2017 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2018 | struct f2fs_defragment range; | |
2019 | int err; | |
2020 | ||
2021 | if (!capable(CAP_SYS_ADMIN)) | |
2022 | return -EPERM; | |
2023 | ||
2024 | if (!S_ISREG(inode->i_mode)) | |
2025 | return -EINVAL; | |
2026 | ||
2027 | err = mnt_want_write_file(filp); | |
2028 | if (err) | |
2029 | return err; | |
2030 | ||
2031 | if (f2fs_readonly(sbi->sb)) { | |
2032 | err = -EROFS; | |
2033 | goto out; | |
2034 | } | |
2035 | ||
2036 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
2037 | sizeof(range))) { | |
2038 | err = -EFAULT; | |
2039 | goto out; | |
2040 | } | |
2041 | ||
2042 | /* verify alignment of offset & size */ | |
2043 | if (range.start & (F2FS_BLKSIZE - 1) || | |
2044 | range.len & (F2FS_BLKSIZE - 1)) { | |
2045 | err = -EINVAL; | |
2046 | goto out; | |
2047 | } | |
2048 | ||
2049 | err = f2fs_defragment_range(sbi, filp, &range); | |
d0239e1b | 2050 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 CY |
2051 | if (err < 0) |
2052 | goto out; | |
2053 | ||
2054 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2055 | sizeof(range))) | |
2056 | err = -EFAULT; | |
2057 | out: | |
2058 | mnt_drop_write_file(filp); | |
2059 | return err; | |
2060 | } | |
2061 | ||
4dd6f977 JK |
2062 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2063 | struct file *file_out, loff_t pos_out, size_t len) | |
2064 | { | |
2065 | struct inode *src = file_inode(file_in); | |
2066 | struct inode *dst = file_inode(file_out); | |
2067 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2068 | size_t olen = len, dst_max_i_size = 0; | |
2069 | size_t dst_osize; | |
2070 | int ret; | |
2071 | ||
2072 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2073 | src->i_sb != dst->i_sb) | |
2074 | return -EXDEV; | |
2075 | ||
2076 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2077 | return -EROFS; | |
2078 | ||
fe8494bf CY |
2079 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2080 | return -EINVAL; | |
4dd6f977 JK |
2081 | |
2082 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2083 | return -EOPNOTSUPP; | |
2084 | ||
d95fd91c FL |
2085 | if (src == dst) { |
2086 | if (pos_in == pos_out) | |
2087 | return 0; | |
2088 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2089 | return -EINVAL; | |
2090 | } | |
2091 | ||
4dd6f977 | 2092 | inode_lock(src); |
20a3d61d CY |
2093 | if (src != dst) { |
2094 | if (!inode_trylock(dst)) { | |
2095 | ret = -EBUSY; | |
2096 | goto out; | |
2097 | } | |
2098 | } | |
4dd6f977 JK |
2099 | |
2100 | ret = -EINVAL; | |
2101 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2102 | goto out_unlock; | |
2103 | if (len == 0) | |
2104 | olen = len = src->i_size - pos_in; | |
2105 | if (pos_in + len == src->i_size) | |
2106 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2107 | if (len == 0) { | |
2108 | ret = 0; | |
2109 | goto out_unlock; | |
2110 | } | |
2111 | ||
2112 | dst_osize = dst->i_size; | |
2113 | if (pos_out + olen > dst->i_size) | |
2114 | dst_max_i_size = pos_out + olen; | |
2115 | ||
2116 | /* verify the end result is block aligned */ | |
2117 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2118 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2119 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2120 | goto out_unlock; | |
2121 | ||
2122 | ret = f2fs_convert_inline_inode(src); | |
2123 | if (ret) | |
2124 | goto out_unlock; | |
2125 | ||
2126 | ret = f2fs_convert_inline_inode(dst); | |
2127 | if (ret) | |
2128 | goto out_unlock; | |
2129 | ||
2130 | /* write out all dirty pages from offset */ | |
2131 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2132 | pos_in, pos_in + len); | |
2133 | if (ret) | |
2134 | goto out_unlock; | |
2135 | ||
2136 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2137 | pos_out, pos_out + len); | |
2138 | if (ret) | |
2139 | goto out_unlock; | |
2140 | ||
2141 | f2fs_balance_fs(sbi, true); | |
2142 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2143 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2144 | pos_out >> F2FS_BLKSIZE_BITS, | |
2145 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2146 | |
2147 | if (!ret) { | |
2148 | if (dst_max_i_size) | |
2149 | f2fs_i_size_write(dst, dst_max_i_size); | |
2150 | else if (dst_osize != dst->i_size) | |
2151 | f2fs_i_size_write(dst, dst_osize); | |
2152 | } | |
2153 | f2fs_unlock_op(sbi); | |
2154 | out_unlock: | |
2155 | if (src != dst) | |
2156 | inode_unlock(dst); | |
20a3d61d | 2157 | out: |
4dd6f977 JK |
2158 | inode_unlock(src); |
2159 | return ret; | |
2160 | } | |
2161 | ||
2162 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2163 | { | |
2164 | struct f2fs_move_range range; | |
2165 | struct fd dst; | |
2166 | int err; | |
2167 | ||
2168 | if (!(filp->f_mode & FMODE_READ) || | |
2169 | !(filp->f_mode & FMODE_WRITE)) | |
2170 | return -EBADF; | |
2171 | ||
2172 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2173 | sizeof(range))) | |
2174 | return -EFAULT; | |
2175 | ||
2176 | dst = fdget(range.dst_fd); | |
2177 | if (!dst.file) | |
2178 | return -EBADF; | |
2179 | ||
2180 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2181 | err = -EBADF; | |
2182 | goto err_out; | |
2183 | } | |
2184 | ||
2185 | err = mnt_want_write_file(filp); | |
2186 | if (err) | |
2187 | goto err_out; | |
2188 | ||
2189 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2190 | range.pos_out, range.len); | |
2191 | ||
2192 | mnt_drop_write_file(filp); | |
2193 | ||
2194 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2195 | &range, sizeof(range))) | |
2196 | err = -EFAULT; | |
2197 | err_out: | |
2198 | fdput(dst); | |
2199 | return err; | |
2200 | } | |
2201 | ||
52656e6c JK |
2202 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2203 | { | |
2204 | switch (cmd) { | |
2205 | case F2FS_IOC_GETFLAGS: | |
2206 | return f2fs_ioc_getflags(filp, arg); | |
2207 | case F2FS_IOC_SETFLAGS: | |
2208 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2209 | case F2FS_IOC_GETVERSION: |
2210 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2211 | case F2FS_IOC_START_ATOMIC_WRITE: |
2212 | return f2fs_ioc_start_atomic_write(filp); | |
2213 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2214 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2215 | case F2FS_IOC_START_VOLATILE_WRITE: |
2216 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2217 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2218 | return f2fs_ioc_release_volatile_write(filp); | |
2219 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2220 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2221 | case F2FS_IOC_SHUTDOWN: |
2222 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2223 | case FITRIM: |
2224 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2225 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2226 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2227 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2228 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2229 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2230 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2231 | case F2FS_IOC_GARBAGE_COLLECT: |
2232 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
2233 | case F2FS_IOC_WRITE_CHECKPOINT: |
2234 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2235 | case F2FS_IOC_DEFRAGMENT: |
2236 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2237 | case F2FS_IOC_MOVE_RANGE: |
2238 | return f2fs_ioc_move_range(filp, arg); | |
fbfa2cc5 JK |
2239 | default: |
2240 | return -ENOTTY; | |
2241 | } | |
2242 | } | |
2243 | ||
fcc85a4d JK |
2244 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2245 | { | |
b439b103 JK |
2246 | struct file *file = iocb->ki_filp; |
2247 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2248 | struct blk_plug plug; |
b439b103 | 2249 | ssize_t ret; |
fcc85a4d JK |
2250 | |
2251 | if (f2fs_encrypted_inode(inode) && | |
0b81d077 JK |
2252 | !fscrypt_has_encryption_key(inode) && |
2253 | fscrypt_get_encryption_info(inode)) | |
fcc85a4d JK |
2254 | return -EACCES; |
2255 | ||
b439b103 JK |
2256 | inode_lock(inode); |
2257 | ret = generic_write_checks(iocb, from); | |
2258 | if (ret > 0) { | |
2259 | ret = f2fs_preallocate_blocks(iocb, from); | |
9dfa1baf JK |
2260 | if (!ret) { |
2261 | blk_start_plug(&plug); | |
b439b103 | 2262 | ret = __generic_file_write_iter(iocb, from); |
9dfa1baf JK |
2263 | blk_finish_plug(&plug); |
2264 | } | |
b439b103 JK |
2265 | } |
2266 | inode_unlock(inode); | |
2267 | ||
e2592217 CH |
2268 | if (ret > 0) |
2269 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2270 | return ret; |
fcc85a4d JK |
2271 | } |
2272 | ||
e9750824 NJ |
2273 | #ifdef CONFIG_COMPAT |
2274 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2275 | { | |
2276 | switch (cmd) { | |
2277 | case F2FS_IOC32_GETFLAGS: | |
2278 | cmd = F2FS_IOC_GETFLAGS; | |
2279 | break; | |
2280 | case F2FS_IOC32_SETFLAGS: | |
2281 | cmd = F2FS_IOC_SETFLAGS; | |
2282 | break; | |
04ef4b62 CY |
2283 | case F2FS_IOC32_GETVERSION: |
2284 | cmd = F2FS_IOC_GETVERSION; | |
2285 | break; | |
2286 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2287 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2288 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2289 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2290 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2291 | case F2FS_IOC_SHUTDOWN: | |
2292 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2293 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2294 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2295 | case F2FS_IOC_GARBAGE_COLLECT: | |
2296 | case F2FS_IOC_WRITE_CHECKPOINT: | |
2297 | case F2FS_IOC_DEFRAGMENT: | |
2298 | break; | |
4dd6f977 JK |
2299 | case F2FS_IOC_MOVE_RANGE: |
2300 | break; | |
e9750824 NJ |
2301 | default: |
2302 | return -ENOIOCTLCMD; | |
2303 | } | |
2304 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2305 | } | |
2306 | #endif | |
2307 | ||
fbfa2cc5 | 2308 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2309 | .llseek = f2fs_llseek, |
aad4f8bb | 2310 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2311 | .write_iter = f2fs_file_write_iter, |
2312 | .open = f2fs_file_open, | |
12662234 | 2313 | .release = f2fs_release_file, |
fbfa2cc5 JK |
2314 | .mmap = f2fs_file_mmap, |
2315 | .fsync = f2fs_sync_file, | |
2316 | .fallocate = f2fs_fallocate, | |
2317 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2318 | #ifdef CONFIG_COMPAT |
2319 | .compat_ioctl = f2fs_compat_ioctl, | |
2320 | #endif | |
fbfa2cc5 | 2321 | .splice_read = generic_file_splice_read, |
8d020765 | 2322 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2323 | }; |