Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
fbfa2cc5 JK |
2 | * fs/f2fs/file.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/stat.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/writeback.h> | |
ae51fb31 | 16 | #include <linux/blkdev.h> |
fbfa2cc5 JK |
17 | #include <linux/falloc.h> |
18 | #include <linux/types.h> | |
e9750824 | 19 | #include <linux/compat.h> |
fbfa2cc5 JK |
20 | #include <linux/uaccess.h> |
21 | #include <linux/mount.h> | |
7f7670fe | 22 | #include <linux/pagevec.h> |
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 JK |
138 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
139 | need_cp = true; | |
e7d55452 JK |
140 | else if (file_enc_name(inode) && need_dentry_mark(sbi, inode->i_ino)) |
141 | need_cp = true; | |
9d1589ef CY |
142 | else if (file_wrong_pino(inode)) |
143 | need_cp = true; | |
144 | else if (!space_for_roll_forward(sbi)) | |
145 | need_cp = true; | |
146 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
147 | need_cp = true; | |
148 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
149 | need_cp = true; | |
d5053a34 JK |
150 | else if (test_opt(sbi, FASTBOOT)) |
151 | need_cp = true; | |
a344b9fd JK |
152 | else if (sbi->active_logs == 2) |
153 | need_cp = true; | |
9d1589ef CY |
154 | |
155 | return need_cp; | |
156 | } | |
157 | ||
9c7bb702 CL |
158 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
159 | { | |
160 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
161 | bool ret = false; | |
162 | /* But we need to avoid that there are some inode updates */ | |
163 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
164 | ret = true; | |
165 | f2fs_put_page(i, 0); | |
166 | return ret; | |
167 | } | |
168 | ||
51455b19 CL |
169 | static void try_to_fix_pino(struct inode *inode) |
170 | { | |
171 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
172 | nid_t pino; | |
173 | ||
174 | down_write(&fi->i_sem); | |
175 | fi->xattr_ver = 0; | |
176 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && | |
177 | get_parent_ino(inode, &pino)) { | |
205b9822 | 178 | f2fs_i_pino_write(inode, pino); |
51455b19 | 179 | file_got_pino(inode); |
51455b19 | 180 | } |
ee6d182f | 181 | up_write(&fi->i_sem); |
51455b19 CL |
182 | } |
183 | ||
608514de JK |
184 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
185 | int datasync, bool atomic) | |
fbfa2cc5 JK |
186 | { |
187 | struct inode *inode = file->f_mapping->host; | |
4081363f | 188 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 189 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
190 | int ret = 0; |
191 | bool need_cp = false; | |
192 | struct writeback_control wbc = { | |
c81bf1c8 | 193 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
194 | .nr_to_write = LONG_MAX, |
195 | .for_reclaim = 0, | |
196 | }; | |
197 | ||
6bacf52f | 198 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
199 | return 0; |
200 | ||
a2a4a7e4 | 201 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
202 | |
203 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 204 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 205 | set_inode_flag(inode, FI_NEED_IPU); |
fbfa2cc5 | 206 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
91942321 | 207 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 208 | |
a2a4a7e4 NJ |
209 | if (ret) { |
210 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 211 | return ret; |
a2a4a7e4 | 212 | } |
fbfa2cc5 | 213 | |
9c7bb702 | 214 | /* if the inode is dirty, let's recover all the time */ |
26de9b11 | 215 | if (!datasync && !f2fs_skip_inode_update(inode)) { |
2286c020 | 216 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
217 | goto go_write; |
218 | } | |
219 | ||
6d99ba41 JK |
220 | /* |
221 | * if there is no written data, don't waste time to write recovery info. | |
222 | */ | |
91942321 | 223 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 224 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 225 | |
9c7bb702 CL |
226 | /* it may call write_inode just prior to fsync */ |
227 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 228 | goto go_write; |
19c9c466 | 229 | |
91942321 | 230 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 231 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
232 | goto flush_out; |
233 | goto out; | |
234 | } | |
19c9c466 | 235 | go_write: |
e5d2385e JK |
236 | /* |
237 | * Both of fdatasync() and fsync() are able to be recovered from | |
238 | * sudden-power-off. | |
239 | */ | |
91942321 | 240 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 241 | need_cp = need_do_checkpoint(inode); |
91942321 | 242 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 243 | |
fbfa2cc5 JK |
244 | if (need_cp) { |
245 | /* all the dirty node pages should be flushed for POR */ | |
246 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 247 | |
51455b19 CL |
248 | /* |
249 | * We've secured consistency through sync_fs. Following pino | |
250 | * will be used only for fsynced inodes after checkpoint. | |
251 | */ | |
252 | try_to_fix_pino(inode); | |
91942321 JK |
253 | clear_inode_flag(inode, FI_APPEND_WRITE); |
254 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
255 | goto out; |
256 | } | |
88bd02c9 | 257 | sync_nodes: |
26de9b11 | 258 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
259 | if (ret) |
260 | goto out; | |
51455b19 | 261 | |
871f599f | 262 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
263 | if (unlikely(f2fs_cp_error(sbi))) { |
264 | ret = -EIO; | |
871f599f | 265 | goto out; |
6d5a1495 | 266 | } |
871f599f | 267 | |
51455b19 | 268 | if (need_inode_block_update(sbi, ino)) { |
b56ab837 | 269 | f2fs_mark_inode_dirty_sync(inode); |
51455b19 CL |
270 | f2fs_write_inode(inode, NULL); |
271 | goto sync_nodes; | |
fbfa2cc5 | 272 | } |
51455b19 CL |
273 | |
274 | ret = wait_on_node_pages_writeback(sbi, ino); | |
275 | if (ret) | |
276 | goto out; | |
277 | ||
278 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 279 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 280 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 281 | flush_out: |
a49324f1 | 282 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 283 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
51455b19 | 284 | ret = f2fs_issue_flush(sbi); |
d0239e1b | 285 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 286 | out: |
a2a4a7e4 | 287 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 288 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
289 | return ret; |
290 | } | |
291 | ||
608514de JK |
292 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
293 | { | |
294 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
295 | } | |
296 | ||
7f7670fe JK |
297 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
298 | pgoff_t pgofs, int whence) | |
299 | { | |
300 | struct pagevec pvec; | |
301 | int nr_pages; | |
302 | ||
303 | if (whence != SEEK_DATA) | |
304 | return 0; | |
305 | ||
306 | /* find first dirty page index */ | |
307 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
308 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
309 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 310 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
311 | pagevec_release(&pvec); |
312 | return pgofs; | |
313 | } | |
314 | ||
315 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
316 | int whence) | |
317 | { | |
318 | switch (whence) { | |
319 | case SEEK_DATA: | |
320 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
321 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
322 | return true; | |
323 | break; | |
324 | case SEEK_HOLE: | |
325 | if (blkaddr == NULL_ADDR) | |
326 | return true; | |
327 | break; | |
328 | } | |
329 | return false; | |
330 | } | |
331 | ||
267378d4 CY |
332 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
333 | { | |
334 | struct inode *inode = file->f_mapping->host; | |
335 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
336 | struct dnode_of_data dn; | |
7f7670fe JK |
337 | pgoff_t pgofs, end_offset, dirty; |
338 | loff_t data_ofs = offset; | |
339 | loff_t isize; | |
267378d4 CY |
340 | int err = 0; |
341 | ||
5955102c | 342 | inode_lock(inode); |
267378d4 CY |
343 | |
344 | isize = i_size_read(inode); | |
345 | if (offset >= isize) | |
346 | goto fail; | |
347 | ||
348 | /* handle inline data case */ | |
622f28ae | 349 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
350 | if (whence == SEEK_HOLE) |
351 | data_ofs = isize; | |
352 | goto found; | |
353 | } | |
354 | ||
09cbfeaf | 355 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 356 | |
7f7670fe JK |
357 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
358 | ||
09cbfeaf | 359 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 360 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 361 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
362 | if (err && err != -ENOENT) { |
363 | goto fail; | |
364 | } else if (err == -ENOENT) { | |
e1c42045 | 365 | /* direct node does not exists */ |
267378d4 | 366 | if (whence == SEEK_DATA) { |
3cf45747 | 367 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
368 | continue; |
369 | } else { | |
370 | goto found; | |
371 | } | |
372 | } | |
373 | ||
81ca7350 | 374 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
375 | |
376 | /* find data/hole in dnode block */ | |
377 | for (; dn.ofs_in_node < end_offset; | |
378 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 379 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 CY |
380 | block_t blkaddr; |
381 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
382 | ||
7f7670fe | 383 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
384 | f2fs_put_dnode(&dn); |
385 | goto found; | |
386 | } | |
387 | } | |
388 | f2fs_put_dnode(&dn); | |
389 | } | |
390 | ||
391 | if (whence == SEEK_DATA) | |
392 | goto fail; | |
267378d4 | 393 | found: |
fe369bc8 JK |
394 | if (whence == SEEK_HOLE && data_ofs > isize) |
395 | data_ofs = isize; | |
5955102c | 396 | inode_unlock(inode); |
267378d4 CY |
397 | return vfs_setpos(file, data_ofs, maxbytes); |
398 | fail: | |
5955102c | 399 | inode_unlock(inode); |
267378d4 CY |
400 | return -ENXIO; |
401 | } | |
402 | ||
403 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
404 | { | |
405 | struct inode *inode = file->f_mapping->host; | |
406 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
407 | ||
408 | switch (whence) { | |
409 | case SEEK_SET: | |
410 | case SEEK_CUR: | |
411 | case SEEK_END: | |
412 | return generic_file_llseek_size(file, offset, whence, | |
413 | maxbytes, i_size_read(inode)); | |
414 | case SEEK_DATA: | |
415 | case SEEK_HOLE: | |
0b4c5afd JK |
416 | if (offset < 0) |
417 | return -ENXIO; | |
267378d4 CY |
418 | return f2fs_seek_block(file, offset, whence); |
419 | } | |
420 | ||
421 | return -EINVAL; | |
422 | } | |
423 | ||
fbfa2cc5 JK |
424 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
425 | { | |
b3d208f9 | 426 | struct inode *inode = file_inode(file); |
b9d777b8 | 427 | int err; |
b3d208f9 | 428 | |
fcc85a4d | 429 | if (f2fs_encrypted_inode(inode)) { |
0b81d077 | 430 | err = fscrypt_get_encryption_info(inode); |
fcc85a4d JK |
431 | if (err) |
432 | return 0; | |
ae108668 CY |
433 | if (!f2fs_encrypted_inode(inode)) |
434 | return -ENOKEY; | |
fcc85a4d JK |
435 | } |
436 | ||
b3d208f9 | 437 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
438 | err = f2fs_convert_inline_inode(inode); |
439 | if (err) | |
440 | return err; | |
b3d208f9 | 441 | |
fbfa2cc5 JK |
442 | file_accessed(file); |
443 | vma->vm_ops = &f2fs_file_vm_ops; | |
444 | return 0; | |
445 | } | |
446 | ||
fcc85a4d JK |
447 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
448 | { | |
449 | int ret = generic_file_open(inode, filp); | |
33b13951 | 450 | struct dentry *dir; |
fcc85a4d JK |
451 | |
452 | if (!ret && f2fs_encrypted_inode(inode)) { | |
0b81d077 | 453 | ret = fscrypt_get_encryption_info(inode); |
fcc85a4d | 454 | if (ret) |
ae108668 | 455 | return -EACCES; |
0b81d077 | 456 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 457 | return -ENOKEY; |
fcc85a4d | 458 | } |
33b13951 JK |
459 | dir = dget_parent(file_dentry(filp)); |
460 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
461 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
462 | dput(dir); | |
8074bb51 | 463 | return -EPERM; |
33b13951 JK |
464 | } |
465 | dput(dir); | |
fcc85a4d JK |
466 | return ret; |
467 | } | |
468 | ||
b292dcab | 469 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 470 | { |
4081363f | 471 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 472 | struct f2fs_node *raw_node; |
19b2c30d | 473 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 JK |
474 | __le32 *addr; |
475 | ||
45590710 | 476 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
477 | addr = blkaddr_in_node(raw_node) + ofs; |
478 | ||
6c311ec6 | 479 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
480 | block_t blkaddr = le32_to_cpu(*addr); |
481 | if (blkaddr == NULL_ADDR) | |
482 | continue; | |
483 | ||
e1509cf2 | 484 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 485 | set_data_blkaddr(dn); |
fbfa2cc5 | 486 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 487 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 488 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
489 | nr_free++; |
490 | } | |
19b2c30d | 491 | |
fbfa2cc5 | 492 | if (nr_free) { |
19b2c30d CY |
493 | pgoff_t fofs; |
494 | /* | |
495 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
496 | * we will invalidate all blkaddr in the whole range. | |
497 | */ | |
498 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 499 | dn->inode) + ofs; |
19b2c30d | 500 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 501 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
502 | } |
503 | dn->ofs_in_node = ofs; | |
51dd6249 | 504 | |
d0239e1b | 505 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
506 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
507 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
508 | return nr_free; |
509 | } | |
510 | ||
511 | void truncate_data_blocks(struct dnode_of_data *dn) | |
512 | { | |
513 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
514 | } | |
515 | ||
0bfcfcca | 516 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 517 | bool cache_only) |
fbfa2cc5 | 518 | { |
09cbfeaf KS |
519 | unsigned offset = from & (PAGE_SIZE - 1); |
520 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 521 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
522 | struct page *page; |
523 | ||
43f3eae1 | 524 | if (!offset && !cache_only) |
b3d208f9 | 525 | return 0; |
fbfa2cc5 | 526 | |
43f3eae1 | 527 | if (cache_only) { |
a56c7c6f | 528 | page = f2fs_grab_cache_page(mapping, index, false); |
43f3eae1 JK |
529 | if (page && PageUptodate(page)) |
530 | goto truncate_out; | |
531 | f2fs_put_page(page, 1); | |
b3d208f9 | 532 | return 0; |
43f3eae1 | 533 | } |
fbfa2cc5 | 534 | |
a56c7c6f | 535 | page = get_lock_data_page(inode, index, true); |
43f3eae1 JK |
536 | if (IS_ERR(page)) |
537 | return 0; | |
538 | truncate_out: | |
fec1d657 | 539 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 540 | zero_user(page, offset, PAGE_SIZE - offset); |
0b81d077 JK |
541 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
542 | !S_ISREG(inode->i_mode)) | |
0bfcfcca | 543 | set_page_dirty(page); |
fbfa2cc5 | 544 | f2fs_put_page(page, 1); |
b3d208f9 | 545 | return 0; |
fbfa2cc5 JK |
546 | } |
547 | ||
764aa3e9 | 548 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 549 | { |
4081363f | 550 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
551 | unsigned int blocksize = inode->i_sb->s_blocksize; |
552 | struct dnode_of_data dn; | |
553 | pgoff_t free_from; | |
9ffe0fb5 | 554 | int count = 0, err = 0; |
b3d208f9 | 555 | struct page *ipage; |
0bfcfcca | 556 | bool truncate_page = false; |
fbfa2cc5 | 557 | |
51dd6249 NJ |
558 | trace_f2fs_truncate_blocks_enter(inode, from); |
559 | ||
f7ef9b83 | 560 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 561 | |
09210c97 CY |
562 | if (free_from >= sbi->max_file_blocks) |
563 | goto free_partial; | |
564 | ||
764aa3e9 JK |
565 | if (lock) |
566 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 567 | |
b3d208f9 JK |
568 | ipage = get_node_page(sbi, inode->i_ino); |
569 | if (IS_ERR(ipage)) { | |
570 | err = PTR_ERR(ipage); | |
571 | goto out; | |
572 | } | |
573 | ||
574 | if (f2fs_has_inline_data(inode)) { | |
0bfcfcca CY |
575 | if (truncate_inline_inode(ipage, from)) |
576 | set_page_dirty(ipage); | |
b3d208f9 | 577 | f2fs_put_page(ipage, 1); |
0bfcfcca | 578 | truncate_page = true; |
b3d208f9 JK |
579 | goto out; |
580 | } | |
581 | ||
582 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 583 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
584 | if (err) { |
585 | if (err == -ENOENT) | |
586 | goto free_next; | |
b3d208f9 | 587 | goto out; |
1ce86bf6 JK |
588 | } |
589 | ||
81ca7350 | 590 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
591 | |
592 | count -= dn.ofs_in_node; | |
9850cf4a | 593 | f2fs_bug_on(sbi, count < 0); |
39936837 | 594 | |
fbfa2cc5 JK |
595 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
596 | truncate_data_blocks_range(&dn, count); | |
597 | free_from += count; | |
598 | } | |
599 | ||
600 | f2fs_put_dnode(&dn); | |
601 | free_next: | |
602 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
603 | out: |
604 | if (lock) | |
605 | f2fs_unlock_op(sbi); | |
09210c97 | 606 | free_partial: |
b3d208f9 JK |
607 | /* lastly zero out the first data page */ |
608 | if (!err) | |
0bfcfcca | 609 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 610 | |
51dd6249 | 611 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
612 | return err; |
613 | } | |
614 | ||
9a449e9c | 615 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 616 | { |
b0154891 CY |
617 | int err; |
618 | ||
fbfa2cc5 JK |
619 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
620 | S_ISLNK(inode->i_mode))) | |
b0154891 | 621 | return 0; |
fbfa2cc5 | 622 | |
51dd6249 NJ |
623 | trace_f2fs_truncate(inode); |
624 | ||
92dffd01 | 625 | /* we should check inline_data size */ |
b9d777b8 | 626 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
627 | err = f2fs_convert_inline_inode(inode); |
628 | if (err) | |
629 | return err; | |
92dffd01 JK |
630 | } |
631 | ||
9a449e9c | 632 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
633 | if (err) |
634 | return err; | |
635 | ||
636 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
b56ab837 | 637 | f2fs_mark_inode_dirty_sync(inode); |
b0154891 | 638 | return 0; |
fbfa2cc5 JK |
639 | } |
640 | ||
2d4d9fb5 | 641 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
642 | struct dentry *dentry, struct kstat *stat) |
643 | { | |
2b0143b5 | 644 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
645 | generic_fillattr(inode, stat); |
646 | stat->blocks <<= 3; | |
647 | return 0; | |
648 | } | |
649 | ||
650 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
651 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
652 | { | |
fbfa2cc5 JK |
653 | unsigned int ia_valid = attr->ia_valid; |
654 | ||
655 | if (ia_valid & ATTR_UID) | |
656 | inode->i_uid = attr->ia_uid; | |
657 | if (ia_valid & ATTR_GID) | |
658 | inode->i_gid = attr->ia_gid; | |
659 | if (ia_valid & ATTR_ATIME) | |
660 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
661 | inode->i_sb->s_time_gran); | |
662 | if (ia_valid & ATTR_MTIME) | |
663 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
664 | inode->i_sb->s_time_gran); | |
665 | if (ia_valid & ATTR_CTIME) | |
666 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
667 | inode->i_sb->s_time_gran); | |
668 | if (ia_valid & ATTR_MODE) { | |
669 | umode_t mode = attr->ia_mode; | |
670 | ||
671 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
672 | mode &= ~S_ISGID; | |
91942321 | 673 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
674 | } |
675 | } | |
676 | #else | |
677 | #define __setattr_copy setattr_copy | |
678 | #endif | |
679 | ||
680 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
681 | { | |
2b0143b5 | 682 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
683 | int err; |
684 | ||
685 | err = inode_change_ok(inode, attr); | |
686 | if (err) | |
687 | return err; | |
688 | ||
09db6a2e | 689 | if (attr->ia_valid & ATTR_SIZE) { |
fcc85a4d | 690 | if (f2fs_encrypted_inode(inode) && |
0b81d077 | 691 | fscrypt_get_encryption_info(inode)) |
fcc85a4d JK |
692 | return -EACCES; |
693 | ||
3c454145 | 694 | if (attr->ia_size <= i_size_read(inode)) { |
09db6a2e | 695 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 696 | err = f2fs_truncate(inode); |
b0154891 CY |
697 | if (err) |
698 | return err; | |
2c4db1a6 | 699 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
09db6a2e CY |
700 | } else { |
701 | /* | |
3c454145 CY |
702 | * do not trim all blocks after i_size if target size is |
703 | * larger than i_size. | |
09db6a2e | 704 | */ |
3c454145 | 705 | truncate_setsize(inode, attr->ia_size); |
0cab80ee CY |
706 | |
707 | /* should convert inline inode here */ | |
b9d777b8 | 708 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
709 | err = f2fs_convert_inline_inode(inode); |
710 | if (err) | |
711 | return err; | |
712 | } | |
345a6b2e | 713 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
09db6a2e | 714 | } |
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 | ||
b56ab837 | 727 | f2fs_mark_inode_dirty_sync(inode); |
fbfa2cc5 JK |
728 | return err; |
729 | } | |
730 | ||
731 | const struct inode_operations f2fs_file_inode_operations = { | |
732 | .getattr = f2fs_getattr, | |
733 | .setattr = f2fs_setattr, | |
734 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 735 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
736 | #ifdef CONFIG_F2FS_FS_XATTR |
737 | .setxattr = generic_setxattr, | |
738 | .getxattr = generic_getxattr, | |
739 | .listxattr = f2fs_listxattr, | |
740 | .removexattr = generic_removexattr, | |
741 | #endif | |
9ab70134 | 742 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
743 | }; |
744 | ||
6394328a | 745 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
746 | loff_t start, loff_t len) |
747 | { | |
4081363f | 748 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
749 | struct page *page; |
750 | ||
751 | if (!len) | |
6394328a | 752 | return 0; |
fbfa2cc5 | 753 | |
2c4db1a6 | 754 | f2fs_balance_fs(sbi, true); |
bd43df02 | 755 | |
e479556b | 756 | f2fs_lock_op(sbi); |
64aa7ed9 | 757 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 758 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 759 | |
6394328a CY |
760 | if (IS_ERR(page)) |
761 | return PTR_ERR(page); | |
762 | ||
fec1d657 | 763 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
764 | zero_user(page, start, len); |
765 | set_page_dirty(page); | |
766 | f2fs_put_page(page, 1); | |
767 | return 0; | |
fbfa2cc5 JK |
768 | } |
769 | ||
770 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
771 | { | |
fbfa2cc5 JK |
772 | int err; |
773 | ||
ea58711e | 774 | while (pg_start < pg_end) { |
fbfa2cc5 | 775 | struct dnode_of_data dn; |
ea58711e | 776 | pgoff_t end_offset, count; |
9eaeba70 | 777 | |
fbfa2cc5 | 778 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 779 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 780 | if (err) { |
ea58711e CY |
781 | if (err == -ENOENT) { |
782 | pg_start++; | |
fbfa2cc5 | 783 | continue; |
ea58711e | 784 | } |
fbfa2cc5 JK |
785 | return err; |
786 | } | |
787 | ||
81ca7350 | 788 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
789 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
790 | ||
791 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
792 | ||
793 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 794 | f2fs_put_dnode(&dn); |
ea58711e CY |
795 | |
796 | pg_start += count; | |
fbfa2cc5 JK |
797 | } |
798 | return 0; | |
799 | } | |
800 | ||
a66c7b2f | 801 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
802 | { |
803 | pgoff_t pg_start, pg_end; | |
804 | loff_t off_start, off_end; | |
b9d777b8 | 805 | int ret; |
fbfa2cc5 | 806 | |
b9d777b8 JK |
807 | ret = f2fs_convert_inline_inode(inode); |
808 | if (ret) | |
809 | return ret; | |
9ffe0fb5 | 810 | |
09cbfeaf KS |
811 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
812 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 813 | |
09cbfeaf KS |
814 | off_start = offset & (PAGE_SIZE - 1); |
815 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
816 | |
817 | if (pg_start == pg_end) { | |
6394328a | 818 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 819 | off_end - off_start); |
6394328a CY |
820 | if (ret) |
821 | return ret; | |
fbfa2cc5 | 822 | } else { |
6394328a CY |
823 | if (off_start) { |
824 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 825 | PAGE_SIZE - off_start); |
6394328a CY |
826 | if (ret) |
827 | return ret; | |
828 | } | |
829 | if (off_end) { | |
830 | ret = fill_zero(inode, pg_end, 0, off_end); | |
831 | if (ret) | |
832 | return ret; | |
833 | } | |
fbfa2cc5 JK |
834 | |
835 | if (pg_start < pg_end) { | |
836 | struct address_space *mapping = inode->i_mapping; | |
837 | loff_t blk_start, blk_end; | |
4081363f | 838 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 839 | |
2c4db1a6 | 840 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 841 | |
09cbfeaf KS |
842 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
843 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
fbfa2cc5 JK |
844 | truncate_inode_pages_range(mapping, blk_start, |
845 | blk_end - 1); | |
39936837 | 846 | |
e479556b | 847 | f2fs_lock_op(sbi); |
fbfa2cc5 | 848 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 849 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
850 | } |
851 | } | |
852 | ||
fbfa2cc5 JK |
853 | return ret; |
854 | } | |
855 | ||
0a2aa8fb JK |
856 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
857 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
858 | { |
859 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
860 | struct dnode_of_data dn; | |
0a2aa8fb | 861 | int ret, done, i; |
ecbaa406 | 862 | |
0a2aa8fb | 863 | next_dnode: |
6e2c64ad | 864 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 865 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
866 | if (ret && ret != -ENOENT) { |
867 | return ret; | |
868 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
869 | if (dn.max_level == 0) |
870 | return -ENOENT; | |
871 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
872 | blkaddr += done; | |
873 | do_replace += done; | |
874 | goto next; | |
875 | } | |
876 | ||
877 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
878 | dn.ofs_in_node, len); | |
879 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
880 | *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
881 | if (!is_checkpointed_data(sbi, *blkaddr)) { | |
882 | ||
883 | if (test_opt(sbi, LFS)) { | |
884 | f2fs_put_dnode(&dn); | |
885 | return -ENOTSUPP; | |
886 | } | |
887 | ||
6e2c64ad | 888 | /* do not invalidate this block address */ |
f28b3434 | 889 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 890 | *do_replace = 1; |
b4ace337 | 891 | } |
6e2c64ad | 892 | } |
0a2aa8fb JK |
893 | f2fs_put_dnode(&dn); |
894 | next: | |
895 | len -= done; | |
896 | off += done; | |
897 | if (len) | |
898 | goto next_dnode; | |
899 | return 0; | |
900 | } | |
b4ace337 | 901 | |
0a2aa8fb JK |
902 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
903 | int *do_replace, pgoff_t off, int len) | |
904 | { | |
905 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
906 | struct dnode_of_data dn; | |
907 | int ret, i; | |
b4ace337 | 908 | |
0a2aa8fb JK |
909 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
910 | if (*do_replace == 0) | |
911 | continue; | |
b4ace337 | 912 | |
0a2aa8fb JK |
913 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
914 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
915 | if (ret) { | |
916 | dec_valid_block_count(sbi, inode, 1); | |
917 | invalidate_blocks(sbi, *blkaddr); | |
918 | } else { | |
919 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 920 | } |
0a2aa8fb JK |
921 | f2fs_put_dnode(&dn); |
922 | } | |
923 | return 0; | |
924 | } | |
925 | ||
926 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
927 | block_t *blkaddr, int *do_replace, | |
928 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
929 | { | |
930 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
931 | pgoff_t i = 0; | |
932 | int ret; | |
36abef4e | 933 | |
0a2aa8fb JK |
934 | while (i < len) { |
935 | if (blkaddr[i] == NULL_ADDR && !full) { | |
936 | i++; | |
937 | continue; | |
6e2c64ad | 938 | } |
b4ace337 | 939 | |
0a2aa8fb JK |
940 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
941 | struct dnode_of_data dn; | |
942 | struct node_info ni; | |
943 | size_t new_size; | |
944 | pgoff_t ilen; | |
b4ace337 | 945 | |
0a2aa8fb JK |
946 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
947 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
948 | if (ret) | |
949 | return ret; | |
b4ace337 | 950 | |
0a2aa8fb JK |
951 | get_node_info(sbi, dn.nid, &ni); |
952 | ilen = min((pgoff_t) | |
953 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
954 | dn.ofs_in_node, len - i); | |
955 | do { | |
956 | dn.data_blkaddr = datablock_addr(dn.node_page, | |
957 | dn.ofs_in_node); | |
958 | truncate_data_blocks_range(&dn, 1); | |
959 | ||
960 | if (do_replace[i]) { | |
961 | f2fs_i_blocks_write(src_inode, | |
962 | 1, false); | |
963 | f2fs_i_blocks_write(dst_inode, | |
964 | 1, true); | |
965 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
966 | blkaddr[i], ni.version, true, false); | |
967 | ||
968 | do_replace[i] = 0; | |
969 | } | |
970 | dn.ofs_in_node++; | |
971 | i++; | |
972 | new_size = (dst + i) << PAGE_SHIFT; | |
973 | if (dst_inode->i_size < new_size) | |
974 | f2fs_i_size_write(dst_inode, new_size); | |
975 | } while ((do_replace[i] || blkaddr[i] == NULL_ADDR) && --ilen); | |
6e2c64ad | 976 | |
0a2aa8fb JK |
977 | f2fs_put_dnode(&dn); |
978 | } else { | |
979 | struct page *psrc, *pdst; | |
980 | ||
981 | psrc = get_lock_data_page(src_inode, src + i, true); | |
982 | if (IS_ERR(psrc)) | |
983 | return PTR_ERR(psrc); | |
984 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
985 | true); | |
986 | if (IS_ERR(pdst)) { | |
987 | f2fs_put_page(psrc, 1); | |
988 | return PTR_ERR(pdst); | |
989 | } | |
990 | f2fs_copy_page(psrc, pdst); | |
991 | set_page_dirty(pdst); | |
992 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 993 | f2fs_put_page(psrc, 1); |
b4ace337 | 994 | |
0a2aa8fb JK |
995 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
996 | if (ret) | |
997 | return ret; | |
998 | i++; | |
999 | } | |
6e2c64ad JK |
1000 | } |
1001 | return 0; | |
0a2aa8fb | 1002 | } |
b4ace337 | 1003 | |
0a2aa8fb JK |
1004 | static int __exchange_data_block(struct inode *src_inode, |
1005 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1006 | pgoff_t len, bool full) |
0a2aa8fb JK |
1007 | { |
1008 | block_t *src_blkaddr; | |
1009 | int *do_replace; | |
363cad7f | 1010 | pgoff_t olen; |
0a2aa8fb JK |
1011 | int ret; |
1012 | ||
363cad7f JK |
1013 | while (len) { |
1014 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1015 | |
363cad7f JK |
1016 | src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
1017 | if (!src_blkaddr) | |
1018 | return -ENOMEM; | |
0a2aa8fb | 1019 | |
363cad7f JK |
1020 | do_replace = f2fs_kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
1021 | if (!do_replace) { | |
1022 | kvfree(src_blkaddr); | |
1023 | return -ENOMEM; | |
1024 | } | |
0a2aa8fb | 1025 | |
363cad7f JK |
1026 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1027 | do_replace, src, olen); | |
1028 | if (ret) | |
1029 | goto roll_back; | |
0a2aa8fb | 1030 | |
363cad7f JK |
1031 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1032 | do_replace, src, dst, olen, full); | |
1033 | if (ret) | |
1034 | goto roll_back; | |
1035 | ||
1036 | src += olen; | |
1037 | dst += olen; | |
1038 | len -= olen; | |
1039 | ||
1040 | kvfree(src_blkaddr); | |
1041 | kvfree(do_replace); | |
1042 | } | |
0a2aa8fb JK |
1043 | return 0; |
1044 | ||
1045 | roll_back: | |
1046 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1047 | kvfree(src_blkaddr); | |
1048 | kvfree(do_replace); | |
6e2c64ad JK |
1049 | return ret; |
1050 | } | |
b4ace337 | 1051 | |
6e2c64ad JK |
1052 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1053 | { | |
1054 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1055 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1056 | int ret; |
6e2c64ad | 1057 | |
0a2aa8fb JK |
1058 | f2fs_balance_fs(sbi, true); |
1059 | f2fs_lock_op(sbi); | |
5f281fab JK |
1060 | |
1061 | f2fs_drop_extent_tree(inode); | |
1062 | ||
0a2aa8fb JK |
1063 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1064 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1065 | return ret; |
1066 | } | |
1067 | ||
1068 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1069 | { | |
1070 | pgoff_t pg_start, pg_end; | |
1071 | loff_t new_size; | |
1072 | int ret; | |
1073 | ||
b4ace337 CY |
1074 | if (offset + len >= i_size_read(inode)) |
1075 | return -EINVAL; | |
1076 | ||
1077 | /* collapse range should be aligned to block size of f2fs. */ | |
1078 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1079 | return -EINVAL; | |
1080 | ||
b9d777b8 JK |
1081 | ret = f2fs_convert_inline_inode(inode); |
1082 | if (ret) | |
1083 | return ret; | |
97a7b2c2 | 1084 | |
09cbfeaf KS |
1085 | pg_start = offset >> PAGE_SHIFT; |
1086 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 CY |
1087 | |
1088 | /* write out all dirty pages from offset */ | |
1089 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1090 | if (ret) | |
1091 | return ret; | |
1092 | ||
1093 | truncate_pagecache(inode, offset); | |
1094 | ||
1095 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1096 | if (ret) | |
1097 | return ret; | |
1098 | ||
6e2c64ad JK |
1099 | /* write out all moved pages, if possible */ |
1100 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1101 | truncate_pagecache(inode, offset); | |
1102 | ||
b4ace337 | 1103 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1104 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1105 | |
1106 | ret = truncate_blocks(inode, new_size, true); | |
1107 | if (!ret) | |
fc9581c8 | 1108 | f2fs_i_size_write(inode, new_size); |
b4ace337 CY |
1109 | |
1110 | return ret; | |
1111 | } | |
1112 | ||
6e961949 CY |
1113 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1114 | pgoff_t end) | |
1115 | { | |
1116 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1117 | pgoff_t index = start; | |
1118 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1119 | blkcnt_t count = 0; | |
1120 | int ret; | |
1121 | ||
1122 | for (; index < end; index++, dn->ofs_in_node++) { | |
1123 | if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR) | |
1124 | count++; | |
1125 | } | |
1126 | ||
1127 | dn->ofs_in_node = ofs_in_node; | |
1128 | ret = reserve_new_blocks(dn, count); | |
1129 | if (ret) | |
1130 | return ret; | |
1131 | ||
1132 | dn->ofs_in_node = ofs_in_node; | |
1133 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
1134 | dn->data_blkaddr = | |
1135 | datablock_addr(dn->node_page, dn->ofs_in_node); | |
1136 | /* | |
1137 | * reserve_new_blocks will not guarantee entire block | |
1138 | * allocation. | |
1139 | */ | |
1140 | if (dn->data_blkaddr == NULL_ADDR) { | |
1141 | ret = -ENOSPC; | |
1142 | break; | |
1143 | } | |
1144 | if (dn->data_blkaddr != NEW_ADDR) { | |
1145 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1146 | dn->data_blkaddr = NEW_ADDR; | |
1147 | set_data_blkaddr(dn); | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1152 | ||
1153 | return ret; | |
1154 | } | |
1155 | ||
75cd4e09 CY |
1156 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1157 | int mode) | |
1158 | { | |
1159 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1160 | struct address_space *mapping = inode->i_mapping; | |
1161 | pgoff_t index, pg_start, pg_end; | |
1162 | loff_t new_size = i_size_read(inode); | |
1163 | loff_t off_start, off_end; | |
1164 | int ret = 0; | |
1165 | ||
75cd4e09 CY |
1166 | ret = inode_newsize_ok(inode, (len + offset)); |
1167 | if (ret) | |
1168 | return ret; | |
1169 | ||
b9d777b8 JK |
1170 | ret = f2fs_convert_inline_inode(inode); |
1171 | if (ret) | |
1172 | return ret; | |
75cd4e09 CY |
1173 | |
1174 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1175 | if (ret) | |
1176 | return ret; | |
1177 | ||
1178 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1179 | ||
09cbfeaf KS |
1180 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1181 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1182 | |
09cbfeaf KS |
1183 | off_start = offset & (PAGE_SIZE - 1); |
1184 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1185 | |
1186 | if (pg_start == pg_end) { | |
6394328a CY |
1187 | ret = fill_zero(inode, pg_start, off_start, |
1188 | off_end - off_start); | |
1189 | if (ret) | |
1190 | return ret; | |
1191 | ||
75cd4e09 CY |
1192 | if (offset + len > new_size) |
1193 | new_size = offset + len; | |
1194 | new_size = max_t(loff_t, new_size, offset + len); | |
1195 | } else { | |
1196 | if (off_start) { | |
6394328a | 1197 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1198 | PAGE_SIZE - off_start); |
6394328a CY |
1199 | if (ret) |
1200 | return ret; | |
1201 | ||
75cd4e09 | 1202 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1203 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1204 | } |
1205 | ||
6e961949 | 1206 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1207 | struct dnode_of_data dn; |
6e961949 CY |
1208 | unsigned int end_offset; |
1209 | pgoff_t end; | |
75cd4e09 CY |
1210 | |
1211 | f2fs_lock_op(sbi); | |
1212 | ||
6e961949 CY |
1213 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1214 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1215 | if (ret) { |
1216 | f2fs_unlock_op(sbi); | |
1217 | goto out; | |
1218 | } | |
1219 | ||
6e961949 CY |
1220 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1221 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1222 | ||
1223 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1224 | f2fs_put_dnode(&dn); |
1225 | f2fs_unlock_op(sbi); | |
6e961949 CY |
1226 | if (ret) |
1227 | goto out; | |
75cd4e09 | 1228 | |
6e961949 | 1229 | index = end; |
75cd4e09 | 1230 | new_size = max_t(loff_t, new_size, |
6e961949 | 1231 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1232 | } |
1233 | ||
1234 | if (off_end) { | |
6394328a CY |
1235 | ret = fill_zero(inode, pg_end, 0, off_end); |
1236 | if (ret) | |
1237 | goto out; | |
1238 | ||
75cd4e09 CY |
1239 | new_size = max_t(loff_t, new_size, offset + len); |
1240 | } | |
1241 | } | |
1242 | ||
1243 | out: | |
ee6d182f | 1244 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1245 | f2fs_i_size_write(inode, new_size); |
75cd4e09 CY |
1246 | |
1247 | return ret; | |
1248 | } | |
1249 | ||
f62185d0 CY |
1250 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1251 | { | |
1252 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1253 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1254 | loff_t new_size; |
6e2c64ad | 1255 | int ret = 0; |
f62185d0 | 1256 | |
f62185d0 CY |
1257 | new_size = i_size_read(inode) + len; |
1258 | if (new_size > inode->i_sb->s_maxbytes) | |
1259 | return -EFBIG; | |
1260 | ||
1261 | if (offset >= i_size_read(inode)) | |
1262 | return -EINVAL; | |
1263 | ||
1264 | /* insert range should be aligned to block size of f2fs. */ | |
1265 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1266 | return -EINVAL; | |
1267 | ||
b9d777b8 JK |
1268 | ret = f2fs_convert_inline_inode(inode); |
1269 | if (ret) | |
1270 | return ret; | |
97a7b2c2 | 1271 | |
2c4db1a6 | 1272 | f2fs_balance_fs(sbi, true); |
2a340760 | 1273 | |
f62185d0 CY |
1274 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1275 | if (ret) | |
1276 | return ret; | |
1277 | ||
1278 | /* write out all dirty pages from offset */ | |
1279 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1280 | if (ret) | |
1281 | return ret; | |
1282 | ||
1283 | truncate_pagecache(inode, offset); | |
1284 | ||
09cbfeaf KS |
1285 | pg_start = offset >> PAGE_SHIFT; |
1286 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1287 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1288 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1289 | ||
1290 | while (!ret && idx > pg_start) { | |
1291 | nr = idx - pg_start; | |
1292 | if (nr > delta) | |
1293 | nr = delta; | |
1294 | idx -= nr; | |
f62185d0 | 1295 | |
f62185d0 | 1296 | f2fs_lock_op(sbi); |
5f281fab JK |
1297 | f2fs_drop_extent_tree(inode); |
1298 | ||
0a2aa8fb JK |
1299 | ret = __exchange_data_block(inode, inode, idx, |
1300 | idx + delta, nr, false); | |
f62185d0 CY |
1301 | f2fs_unlock_op(sbi); |
1302 | } | |
1303 | ||
6e2c64ad JK |
1304 | /* write out all moved pages, if possible */ |
1305 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1306 | truncate_pagecache(inode, offset); | |
1307 | ||
1308 | if (!ret) | |
fc9581c8 | 1309 | f2fs_i_size_write(inode, new_size); |
f62185d0 CY |
1310 | return ret; |
1311 | } | |
1312 | ||
fbfa2cc5 JK |
1313 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1314 | loff_t len, int mode) | |
1315 | { | |
4081363f | 1316 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1317 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1318 | pgoff_t pg_end; | |
fbfa2cc5 | 1319 | loff_t new_size = i_size_read(inode); |
e12dd7bd JK |
1320 | loff_t off_end; |
1321 | int ret; | |
fbfa2cc5 JK |
1322 | |
1323 | ret = inode_newsize_ok(inode, (len + offset)); | |
1324 | if (ret) | |
1325 | return ret; | |
1326 | ||
b9d777b8 JK |
1327 | ret = f2fs_convert_inline_inode(inode); |
1328 | if (ret) | |
1329 | return ret; | |
9e09fc85 | 1330 | |
2c4db1a6 | 1331 | f2fs_balance_fs(sbi, true); |
2a340760 | 1332 | |
e12dd7bd | 1333 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1334 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1335 | |
e12dd7bd JK |
1336 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1337 | map.m_len = pg_end - map.m_lblk; | |
1338 | if (off_end) | |
1339 | map.m_len++; | |
ead43275 | 1340 | |
e12dd7bd JK |
1341 | ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1342 | if (ret) { | |
1343 | pgoff_t last_off; | |
fbfa2cc5 | 1344 | |
e12dd7bd JK |
1345 | if (!map.m_len) |
1346 | return ret; | |
98397ff3 | 1347 | |
e12dd7bd JK |
1348 | last_off = map.m_lblk + map.m_len - 1; |
1349 | ||
1350 | /* update new size to the failed position */ | |
1351 | new_size = (last_off == pg_end) ? offset + len: | |
1352 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1353 | } else { | |
1354 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1355 | } |
1356 | ||
ee6d182f | 1357 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1358 | f2fs_i_size_write(inode, new_size); |
fbfa2cc5 JK |
1359 | |
1360 | return ret; | |
1361 | } | |
1362 | ||
1363 | static long f2fs_fallocate(struct file *file, int mode, | |
1364 | loff_t offset, loff_t len) | |
1365 | { | |
6131ffaa | 1366 | struct inode *inode = file_inode(file); |
587c0a42 | 1367 | long ret = 0; |
fbfa2cc5 | 1368 | |
c998012b CY |
1369 | /* f2fs only support ->fallocate for regular file */ |
1370 | if (!S_ISREG(inode->i_mode)) | |
1371 | return -EINVAL; | |
1372 | ||
f62185d0 CY |
1373 | if (f2fs_encrypted_inode(inode) && |
1374 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1375 | return -EOPNOTSUPP; |
1376 | ||
b4ace337 | 1377 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1378 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1379 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1380 | return -EOPNOTSUPP; |
1381 | ||
5955102c | 1382 | inode_lock(inode); |
3375f696 | 1383 | |
587c0a42 TY |
1384 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1385 | if (offset >= inode->i_size) | |
1386 | goto out; | |
1387 | ||
a66c7b2f | 1388 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1389 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1390 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1391 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1392 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1393 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1394 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1395 | } else { |
fbfa2cc5 | 1396 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1397 | } |
fbfa2cc5 | 1398 | |
3af60a49 NJ |
1399 | if (!ret) { |
1400 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
b56ab837 | 1401 | f2fs_mark_inode_dirty_sync(inode); |
d0239e1b | 1402 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1403 | } |
3375f696 | 1404 | |
587c0a42 | 1405 | out: |
5955102c | 1406 | inode_unlock(inode); |
3375f696 | 1407 | |
c01e2853 | 1408 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1409 | return ret; |
1410 | } | |
1411 | ||
1e84371f JK |
1412 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1413 | { | |
de5307e4 JK |
1414 | /* |
1415 | * f2fs_relase_file is called at every close calls. So we should | |
1416 | * not drop any inmemory pages by close called by other process. | |
1417 | */ | |
1418 | if (!(filp->f_mode & FMODE_WRITE) || | |
1419 | atomic_read(&inode->i_writecount) != 1) | |
1420 | return 0; | |
1421 | ||
1e84371f JK |
1422 | /* some remained atomic pages should discarded */ |
1423 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1424 | drop_inmem_pages(inode); |
1e84371f | 1425 | if (f2fs_is_volatile_file(inode)) { |
91942321 JK |
1426 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1427 | set_inode_flag(inode, FI_DROP_CACHE); | |
1e84371f | 1428 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1429 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1430 | } |
1431 | return 0; | |
1432 | } | |
1433 | ||
fbfa2cc5 JK |
1434 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
1435 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
1436 | ||
1437 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
1438 | { | |
1439 | if (S_ISDIR(mode)) | |
1440 | return flags; | |
1441 | else if (S_ISREG(mode)) | |
1442 | return flags & F2FS_REG_FLMASK; | |
1443 | else | |
1444 | return flags & F2FS_OTHER_FLMASK; | |
1445 | } | |
1446 | ||
52656e6c | 1447 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1448 | { |
6131ffaa | 1449 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1450 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1451 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1452 | return put_user(flags, (int __user *)arg); | |
1453 | } | |
fbfa2cc5 | 1454 | |
52656e6c JK |
1455 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1456 | { | |
1457 | struct inode *inode = file_inode(filp); | |
1458 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
69494229 | 1459 | unsigned int flags; |
52656e6c JK |
1460 | unsigned int oldflags; |
1461 | int ret; | |
fbfa2cc5 | 1462 | |
7fb17fe4 CY |
1463 | if (!inode_owner_or_capable(inode)) |
1464 | return -EACCES; | |
1465 | ||
1466 | if (get_user(flags, (int __user *)arg)) | |
1467 | return -EFAULT; | |
1468 | ||
52656e6c JK |
1469 | ret = mnt_want_write_file(filp); |
1470 | if (ret) | |
1471 | return ret; | |
fbfa2cc5 | 1472 | |
52656e6c | 1473 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 1474 | |
5955102c | 1475 | inode_lock(inode); |
fbfa2cc5 | 1476 | |
52656e6c | 1477 | oldflags = fi->i_flags; |
fbfa2cc5 | 1478 | |
52656e6c JK |
1479 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1480 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
5955102c | 1481 | inode_unlock(inode); |
52656e6c JK |
1482 | ret = -EPERM; |
1483 | goto out; | |
fbfa2cc5 | 1484 | } |
52656e6c | 1485 | } |
fbfa2cc5 | 1486 | |
52656e6c JK |
1487 | flags = flags & FS_FL_USER_MODIFIABLE; |
1488 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1489 | fi->i_flags = flags; | |
5955102c | 1490 | inode_unlock(inode); |
fbfa2cc5 | 1491 | |
52656e6c | 1492 | inode->i_ctime = CURRENT_TIME; |
205b9822 | 1493 | f2fs_set_inode_flags(inode); |
fbfa2cc5 | 1494 | out: |
52656e6c JK |
1495 | mnt_drop_write_file(filp); |
1496 | return ret; | |
1497 | } | |
4b2fecc8 | 1498 | |
d49f3e89 CY |
1499 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1500 | { | |
1501 | struct inode *inode = file_inode(filp); | |
1502 | ||
1503 | return put_user(inode->i_generation, (int __user *)arg); | |
1504 | } | |
1505 | ||
88b88a66 JK |
1506 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1507 | { | |
1508 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1509 | int ret; |
88b88a66 JK |
1510 | |
1511 | if (!inode_owner_or_capable(inode)) | |
1512 | return -EACCES; | |
1513 | ||
7fb17fe4 CY |
1514 | ret = mnt_want_write_file(filp); |
1515 | if (ret) | |
1516 | return ret; | |
1517 | ||
0fac558b CY |
1518 | inode_lock(inode); |
1519 | ||
1e84371f | 1520 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1521 | goto out; |
88b88a66 | 1522 | |
f4c9c743 CY |
1523 | ret = f2fs_convert_inline_inode(inode); |
1524 | if (ret) | |
7fb17fe4 | 1525 | goto out; |
88b88a66 | 1526 | |
91942321 | 1527 | set_inode_flag(inode, FI_ATOMIC_FILE); |
d0239e1b JK |
1528 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1529 | ||
c27753d6 | 1530 | if (!get_dirty_pages(inode)) |
7fb17fe4 | 1531 | goto out; |
c27753d6 JK |
1532 | |
1533 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
1beba1b3 | 1534 | "Unexpected flush for atomic writes: ino=%lu, npages=%lld", |
c27753d6 JK |
1535 | inode->i_ino, get_dirty_pages(inode)); |
1536 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
1537 | if (ret) | |
91942321 | 1538 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
7fb17fe4 | 1539 | out: |
0fac558b | 1540 | inode_unlock(inode); |
7fb17fe4 | 1541 | mnt_drop_write_file(filp); |
c27753d6 | 1542 | return ret; |
88b88a66 JK |
1543 | } |
1544 | ||
1545 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1546 | { | |
1547 | struct inode *inode = file_inode(filp); | |
1548 | int ret; | |
1549 | ||
1550 | if (!inode_owner_or_capable(inode)) | |
1551 | return -EACCES; | |
1552 | ||
1553 | ret = mnt_want_write_file(filp); | |
1554 | if (ret) | |
1555 | return ret; | |
1556 | ||
0fac558b CY |
1557 | inode_lock(inode); |
1558 | ||
7fb17fe4 CY |
1559 | if (f2fs_is_volatile_file(inode)) |
1560 | goto err_out; | |
1561 | ||
6282adbf | 1562 | if (f2fs_is_atomic_file(inode)) { |
91942321 | 1563 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
29b96b54 | 1564 | ret = commit_inmem_pages(inode); |
447135a8 | 1565 | if (ret) { |
91942321 | 1566 | set_inode_flag(inode, FI_ATOMIC_FILE); |
edb27dee | 1567 | goto err_out; |
447135a8 | 1568 | } |
6282adbf | 1569 | } |
88b88a66 | 1570 | |
608514de | 1571 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
edb27dee | 1572 | err_out: |
0fac558b | 1573 | inode_unlock(inode); |
88b88a66 JK |
1574 | mnt_drop_write_file(filp); |
1575 | return ret; | |
1576 | } | |
1577 | ||
02a1335f JK |
1578 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1579 | { | |
1580 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1581 | int ret; |
02a1335f JK |
1582 | |
1583 | if (!inode_owner_or_capable(inode)) | |
1584 | return -EACCES; | |
1585 | ||
7fb17fe4 CY |
1586 | ret = mnt_want_write_file(filp); |
1587 | if (ret) | |
1588 | return ret; | |
1589 | ||
0fac558b CY |
1590 | inode_lock(inode); |
1591 | ||
1e84371f | 1592 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1593 | goto out; |
1e84371f | 1594 | |
f4c9c743 CY |
1595 | ret = f2fs_convert_inline_inode(inode); |
1596 | if (ret) | |
7fb17fe4 | 1597 | goto out; |
b3d208f9 | 1598 | |
91942321 | 1599 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1600 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1601 | out: |
0fac558b | 1602 | inode_unlock(inode); |
7fb17fe4 CY |
1603 | mnt_drop_write_file(filp); |
1604 | return ret; | |
02a1335f JK |
1605 | } |
1606 | ||
1e84371f JK |
1607 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1608 | { | |
1609 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1610 | int ret; |
1e84371f JK |
1611 | |
1612 | if (!inode_owner_or_capable(inode)) | |
1613 | return -EACCES; | |
1614 | ||
7fb17fe4 CY |
1615 | ret = mnt_want_write_file(filp); |
1616 | if (ret) | |
1617 | return ret; | |
1618 | ||
0fac558b CY |
1619 | inode_lock(inode); |
1620 | ||
1e84371f | 1621 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1622 | goto out; |
1e84371f | 1623 | |
7fb17fe4 CY |
1624 | if (!f2fs_is_first_block_written(inode)) { |
1625 | ret = truncate_partial_data_page(inode, 0, true); | |
1626 | goto out; | |
1627 | } | |
3c6c2beb | 1628 | |
7fb17fe4 CY |
1629 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1630 | out: | |
0fac558b | 1631 | inode_unlock(inode); |
7fb17fe4 CY |
1632 | mnt_drop_write_file(filp); |
1633 | return ret; | |
1e84371f JK |
1634 | } |
1635 | ||
1636 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1637 | { | |
1638 | struct inode *inode = file_inode(filp); | |
1639 | int ret; | |
1640 | ||
1641 | if (!inode_owner_or_capable(inode)) | |
1642 | return -EACCES; | |
1643 | ||
1644 | ret = mnt_want_write_file(filp); | |
1645 | if (ret) | |
1646 | return ret; | |
1647 | ||
0fac558b CY |
1648 | inode_lock(inode); |
1649 | ||
26dc3d44 | 1650 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1651 | drop_inmem_pages(inode); |
732d5648 | 1652 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1653 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
608514de | 1654 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1655 | } |
de6a8ec9 | 1656 | |
0fac558b CY |
1657 | inode_unlock(inode); |
1658 | ||
1e84371f | 1659 | mnt_drop_write_file(filp); |
d0239e1b | 1660 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1661 | return ret; |
1662 | } | |
1663 | ||
1abff93d JK |
1664 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1665 | { | |
1666 | struct inode *inode = file_inode(filp); | |
1667 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1668 | struct super_block *sb = sbi->sb; | |
1669 | __u32 in; | |
7fb17fe4 | 1670 | int ret; |
1abff93d JK |
1671 | |
1672 | if (!capable(CAP_SYS_ADMIN)) | |
1673 | return -EPERM; | |
1674 | ||
1675 | if (get_user(in, (__u32 __user *)arg)) | |
1676 | return -EFAULT; | |
1677 | ||
7fb17fe4 CY |
1678 | ret = mnt_want_write_file(filp); |
1679 | if (ret) | |
1680 | return ret; | |
1681 | ||
1abff93d JK |
1682 | switch (in) { |
1683 | case F2FS_GOING_DOWN_FULLSYNC: | |
1684 | sb = freeze_bdev(sb->s_bdev); | |
1685 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1686 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1687 | thaw_bdev(sb->s_bdev, sb); |
1688 | } | |
1689 | break; | |
1690 | case F2FS_GOING_DOWN_METASYNC: | |
1691 | /* do checkpoint only */ | |
1692 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1693 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1694 | break; |
1695 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1696 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1697 | break; |
c912a829 JK |
1698 | case F2FS_GOING_DOWN_METAFLUSH: |
1699 | sync_meta_pages(sbi, META, LONG_MAX); | |
38f91ca8 | 1700 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1701 | break; |
1abff93d | 1702 | default: |
7fb17fe4 CY |
1703 | ret = -EINVAL; |
1704 | goto out; | |
1abff93d | 1705 | } |
d0239e1b | 1706 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1707 | out: |
1708 | mnt_drop_write_file(filp); | |
1709 | return ret; | |
1abff93d JK |
1710 | } |
1711 | ||
52656e6c JK |
1712 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1713 | { | |
1714 | struct inode *inode = file_inode(filp); | |
1715 | struct super_block *sb = inode->i_sb; | |
1716 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1717 | struct fstrim_range range; | |
1718 | int ret; | |
4b2fecc8 | 1719 | |
52656e6c JK |
1720 | if (!capable(CAP_SYS_ADMIN)) |
1721 | return -EPERM; | |
4b2fecc8 | 1722 | |
52656e6c JK |
1723 | if (!blk_queue_discard(q)) |
1724 | return -EOPNOTSUPP; | |
4b2fecc8 | 1725 | |
52656e6c JK |
1726 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1727 | sizeof(range))) | |
1728 | return -EFAULT; | |
4b2fecc8 | 1729 | |
7fb17fe4 CY |
1730 | ret = mnt_want_write_file(filp); |
1731 | if (ret) | |
1732 | return ret; | |
1733 | ||
52656e6c JK |
1734 | range.minlen = max((unsigned int)range.minlen, |
1735 | q->limits.discard_granularity); | |
1736 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1737 | mnt_drop_write_file(filp); |
52656e6c JK |
1738 | if (ret < 0) |
1739 | return ret; | |
4b2fecc8 | 1740 | |
52656e6c JK |
1741 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1742 | sizeof(range))) | |
1743 | return -EFAULT; | |
d0239e1b | 1744 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1745 | return 0; |
1746 | } | |
1747 | ||
f424f664 JK |
1748 | static bool uuid_is_nonzero(__u8 u[16]) |
1749 | { | |
1750 | int i; | |
1751 | ||
1752 | for (i = 0; i < 16; i++) | |
1753 | if (u[i]) | |
1754 | return true; | |
1755 | return false; | |
1756 | } | |
1757 | ||
1758 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1759 | { | |
0b81d077 | 1760 | struct fscrypt_policy policy; |
f424f664 | 1761 | struct inode *inode = file_inode(filp); |
7fb17fe4 | 1762 | int ret; |
f424f664 | 1763 | |
0b81d077 JK |
1764 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
1765 | sizeof(policy))) | |
f424f664 JK |
1766 | return -EFAULT; |
1767 | ||
7fb17fe4 CY |
1768 | ret = mnt_want_write_file(filp); |
1769 | if (ret) | |
1770 | return ret; | |
1771 | ||
d0239e1b | 1772 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 CY |
1773 | ret = fscrypt_process_policy(inode, &policy); |
1774 | ||
1775 | mnt_drop_write_file(filp); | |
1776 | return ret; | |
f424f664 JK |
1777 | } |
1778 | ||
1779 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1780 | { | |
0b81d077 | 1781 | struct fscrypt_policy policy; |
f424f664 JK |
1782 | struct inode *inode = file_inode(filp); |
1783 | int err; | |
1784 | ||
0b81d077 | 1785 | err = fscrypt_get_policy(inode, &policy); |
f424f664 JK |
1786 | if (err) |
1787 | return err; | |
1788 | ||
0b81d077 | 1789 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
f424f664 JK |
1790 | return -EFAULT; |
1791 | return 0; | |
f424f664 JK |
1792 | } |
1793 | ||
1794 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1795 | { | |
1796 | struct inode *inode = file_inode(filp); | |
1797 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1798 | int err; | |
1799 | ||
1800 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1801 | return -EOPNOTSUPP; | |
1802 | ||
1803 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1804 | goto got_it; | |
1805 | ||
1806 | err = mnt_want_write_file(filp); | |
1807 | if (err) | |
1808 | return err; | |
1809 | ||
1810 | /* update superblock with uuid */ | |
1811 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1812 | ||
c5bda1c8 | 1813 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1814 | if (err) { |
1815 | /* undo new data */ | |
1816 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1817 | mnt_drop_write_file(filp); |
f424f664 JK |
1818 | return err; |
1819 | } | |
e8240f65 | 1820 | mnt_drop_write_file(filp); |
f424f664 JK |
1821 | got_it: |
1822 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1823 | 16)) | |
1824 | return -EFAULT; | |
1825 | return 0; | |
1826 | } | |
1827 | ||
c1c1b583 CY |
1828 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1829 | { | |
1830 | struct inode *inode = file_inode(filp); | |
1831 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1832 | __u32 sync; |
7fb17fe4 | 1833 | int ret; |
c1c1b583 CY |
1834 | |
1835 | if (!capable(CAP_SYS_ADMIN)) | |
1836 | return -EPERM; | |
1837 | ||
d530d4d8 | 1838 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1839 | return -EFAULT; |
1840 | ||
d530d4d8 CY |
1841 | if (f2fs_readonly(sbi->sb)) |
1842 | return -EROFS; | |
c1c1b583 | 1843 | |
7fb17fe4 CY |
1844 | ret = mnt_want_write_file(filp); |
1845 | if (ret) | |
1846 | return ret; | |
1847 | ||
d530d4d8 | 1848 | if (!sync) { |
7fb17fe4 CY |
1849 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1850 | ret = -EBUSY; | |
1851 | goto out; | |
1852 | } | |
d530d4d8 CY |
1853 | } else { |
1854 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1855 | } |
1856 | ||
7fb17fe4 CY |
1857 | ret = f2fs_gc(sbi, sync); |
1858 | out: | |
1859 | mnt_drop_write_file(filp); | |
1860 | return ret; | |
c1c1b583 CY |
1861 | } |
1862 | ||
456b88e4 CY |
1863 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1864 | { | |
1865 | struct inode *inode = file_inode(filp); | |
1866 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 1867 | int ret; |
456b88e4 CY |
1868 | |
1869 | if (!capable(CAP_SYS_ADMIN)) | |
1870 | return -EPERM; | |
1871 | ||
1872 | if (f2fs_readonly(sbi->sb)) | |
1873 | return -EROFS; | |
1874 | ||
7fb17fe4 CY |
1875 | ret = mnt_want_write_file(filp); |
1876 | if (ret) | |
1877 | return ret; | |
1878 | ||
1879 | ret = f2fs_sync_fs(sbi->sb, 1); | |
1880 | ||
1881 | mnt_drop_write_file(filp); | |
1882 | return ret; | |
456b88e4 CY |
1883 | } |
1884 | ||
d323d005 CY |
1885 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
1886 | struct file *filp, | |
1887 | struct f2fs_defragment *range) | |
1888 | { | |
1889 | struct inode *inode = file_inode(filp); | |
da85985c | 1890 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
d323d005 CY |
1891 | struct extent_info ei; |
1892 | pgoff_t pg_start, pg_end; | |
3519e3f9 | 1893 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 1894 | unsigned int total = 0, sec_num; |
3519e3f9 | 1895 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
d323d005 CY |
1896 | block_t blk_end = 0; |
1897 | bool fragmented = false; | |
1898 | int err; | |
1899 | ||
1900 | /* if in-place-update policy is enabled, don't waste time here */ | |
1901 | if (need_inplace_update(inode)) | |
1902 | return -EINVAL; | |
1903 | ||
09cbfeaf KS |
1904 | pg_start = range->start >> PAGE_SHIFT; |
1905 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 1906 | |
2c4db1a6 | 1907 | f2fs_balance_fs(sbi, true); |
d323d005 | 1908 | |
5955102c | 1909 | inode_lock(inode); |
d323d005 CY |
1910 | |
1911 | /* writeback all dirty pages in the range */ | |
1912 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 1913 | range->start + range->len - 1); |
d323d005 CY |
1914 | if (err) |
1915 | goto out; | |
1916 | ||
1917 | /* | |
1918 | * lookup mapping info in extent cache, skip defragmenting if physical | |
1919 | * block addresses are continuous. | |
1920 | */ | |
1921 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
1922 | if (ei.fofs + ei.len >= pg_end) | |
1923 | goto out; | |
1924 | } | |
1925 | ||
1926 | map.m_lblk = pg_start; | |
d323d005 CY |
1927 | |
1928 | /* | |
1929 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
1930 | * physical block addresses are continuous even if there are hole(s) | |
1931 | * in logical blocks. | |
1932 | */ | |
1933 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 1934 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1935 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1936 | if (err) | |
1937 | goto out; | |
1938 | ||
1939 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1940 | map.m_lblk++; | |
d323d005 CY |
1941 | continue; |
1942 | } | |
1943 | ||
1944 | if (blk_end && blk_end != map.m_pblk) { | |
1945 | fragmented = true; | |
1946 | break; | |
1947 | } | |
1948 | blk_end = map.m_pblk + map.m_len; | |
1949 | ||
1950 | map.m_lblk += map.m_len; | |
d323d005 CY |
1951 | } |
1952 | ||
1953 | if (!fragmented) | |
1954 | goto out; | |
1955 | ||
1956 | map.m_lblk = pg_start; | |
1957 | map.m_len = pg_end - pg_start; | |
1958 | ||
1959 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; | |
1960 | ||
1961 | /* | |
1962 | * make sure there are enough free section for LFS allocation, this can | |
1963 | * avoid defragment running in SSR mode when free section are allocated | |
1964 | * intensively | |
1965 | */ | |
1966 | if (has_not_enough_free_secs(sbi, sec_num)) { | |
1967 | err = -EAGAIN; | |
1968 | goto out; | |
1969 | } | |
1970 | ||
1971 | while (map.m_lblk < pg_end) { | |
1972 | pgoff_t idx; | |
1973 | int cnt = 0; | |
1974 | ||
1975 | do_map: | |
a1c1e9b7 | 1976 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
1977 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
1978 | if (err) | |
1979 | goto clear_out; | |
1980 | ||
1981 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
1982 | map.m_lblk++; | |
1983 | continue; | |
1984 | } | |
1985 | ||
91942321 | 1986 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
1987 | |
1988 | idx = map.m_lblk; | |
1989 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
1990 | struct page *page; | |
1991 | ||
1992 | page = get_lock_data_page(inode, idx, true); | |
1993 | if (IS_ERR(page)) { | |
1994 | err = PTR_ERR(page); | |
1995 | goto clear_out; | |
1996 | } | |
1997 | ||
1998 | set_page_dirty(page); | |
1999 | f2fs_put_page(page, 1); | |
2000 | ||
2001 | idx++; | |
2002 | cnt++; | |
2003 | total++; | |
2004 | } | |
2005 | ||
2006 | map.m_lblk = idx; | |
d323d005 CY |
2007 | |
2008 | if (idx < pg_end && cnt < blk_per_seg) | |
2009 | goto do_map; | |
2010 | ||
91942321 | 2011 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2012 | |
2013 | err = filemap_fdatawrite(inode->i_mapping); | |
2014 | if (err) | |
2015 | goto out; | |
2016 | } | |
2017 | clear_out: | |
91942321 | 2018 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2019 | out: |
5955102c | 2020 | inode_unlock(inode); |
d323d005 | 2021 | if (!err) |
09cbfeaf | 2022 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2023 | return err; |
2024 | } | |
2025 | ||
2026 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2027 | { | |
2028 | struct inode *inode = file_inode(filp); | |
2029 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2030 | struct f2fs_defragment range; | |
2031 | int err; | |
2032 | ||
2033 | if (!capable(CAP_SYS_ADMIN)) | |
2034 | return -EPERM; | |
2035 | ||
2036 | if (!S_ISREG(inode->i_mode)) | |
2037 | return -EINVAL; | |
2038 | ||
2039 | err = mnt_want_write_file(filp); | |
2040 | if (err) | |
2041 | return err; | |
2042 | ||
2043 | if (f2fs_readonly(sbi->sb)) { | |
2044 | err = -EROFS; | |
2045 | goto out; | |
2046 | } | |
2047 | ||
2048 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
2049 | sizeof(range))) { | |
2050 | err = -EFAULT; | |
2051 | goto out; | |
2052 | } | |
2053 | ||
2054 | /* verify alignment of offset & size */ | |
2055 | if (range.start & (F2FS_BLKSIZE - 1) || | |
2056 | range.len & (F2FS_BLKSIZE - 1)) { | |
2057 | err = -EINVAL; | |
2058 | goto out; | |
2059 | } | |
2060 | ||
2061 | err = f2fs_defragment_range(sbi, filp, &range); | |
d0239e1b | 2062 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 CY |
2063 | if (err < 0) |
2064 | goto out; | |
2065 | ||
2066 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2067 | sizeof(range))) | |
2068 | err = -EFAULT; | |
2069 | out: | |
2070 | mnt_drop_write_file(filp); | |
2071 | return err; | |
2072 | } | |
2073 | ||
4dd6f977 JK |
2074 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2075 | struct file *file_out, loff_t pos_out, size_t len) | |
2076 | { | |
2077 | struct inode *src = file_inode(file_in); | |
2078 | struct inode *dst = file_inode(file_out); | |
2079 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2080 | size_t olen = len, dst_max_i_size = 0; | |
2081 | size_t dst_osize; | |
2082 | int ret; | |
2083 | ||
2084 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2085 | src->i_sb != dst->i_sb) | |
2086 | return -EXDEV; | |
2087 | ||
2088 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2089 | return -EROFS; | |
2090 | ||
fe8494bf CY |
2091 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2092 | return -EINVAL; | |
4dd6f977 JK |
2093 | |
2094 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2095 | return -EOPNOTSUPP; | |
2096 | ||
2097 | inode_lock(src); | |
20a3d61d CY |
2098 | if (src != dst) { |
2099 | if (!inode_trylock(dst)) { | |
2100 | ret = -EBUSY; | |
2101 | goto out; | |
2102 | } | |
2103 | } | |
4dd6f977 JK |
2104 | |
2105 | ret = -EINVAL; | |
2106 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2107 | goto out_unlock; | |
2108 | if (len == 0) | |
2109 | olen = len = src->i_size - pos_in; | |
2110 | if (pos_in + len == src->i_size) | |
2111 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2112 | if (len == 0) { | |
2113 | ret = 0; | |
2114 | goto out_unlock; | |
2115 | } | |
2116 | ||
2117 | dst_osize = dst->i_size; | |
2118 | if (pos_out + olen > dst->i_size) | |
2119 | dst_max_i_size = pos_out + olen; | |
2120 | ||
2121 | /* verify the end result is block aligned */ | |
2122 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2123 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2124 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2125 | goto out_unlock; | |
2126 | ||
2127 | ret = f2fs_convert_inline_inode(src); | |
2128 | if (ret) | |
2129 | goto out_unlock; | |
2130 | ||
2131 | ret = f2fs_convert_inline_inode(dst); | |
2132 | if (ret) | |
2133 | goto out_unlock; | |
2134 | ||
2135 | /* write out all dirty pages from offset */ | |
2136 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2137 | pos_in, pos_in + len); | |
2138 | if (ret) | |
2139 | goto out_unlock; | |
2140 | ||
2141 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2142 | pos_out, pos_out + len); | |
2143 | if (ret) | |
2144 | goto out_unlock; | |
2145 | ||
2146 | f2fs_balance_fs(sbi, true); | |
2147 | f2fs_lock_op(sbi); | |
2148 | ret = __exchange_data_block(src, dst, pos_in, | |
2149 | pos_out, len >> F2FS_BLKSIZE_BITS, false); | |
2150 | ||
2151 | if (!ret) { | |
2152 | if (dst_max_i_size) | |
2153 | f2fs_i_size_write(dst, dst_max_i_size); | |
2154 | else if (dst_osize != dst->i_size) | |
2155 | f2fs_i_size_write(dst, dst_osize); | |
2156 | } | |
2157 | f2fs_unlock_op(sbi); | |
2158 | out_unlock: | |
2159 | if (src != dst) | |
2160 | inode_unlock(dst); | |
20a3d61d | 2161 | out: |
4dd6f977 JK |
2162 | inode_unlock(src); |
2163 | return ret; | |
2164 | } | |
2165 | ||
2166 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2167 | { | |
2168 | struct f2fs_move_range range; | |
2169 | struct fd dst; | |
2170 | int err; | |
2171 | ||
2172 | if (!(filp->f_mode & FMODE_READ) || | |
2173 | !(filp->f_mode & FMODE_WRITE)) | |
2174 | return -EBADF; | |
2175 | ||
2176 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2177 | sizeof(range))) | |
2178 | return -EFAULT; | |
2179 | ||
2180 | dst = fdget(range.dst_fd); | |
2181 | if (!dst.file) | |
2182 | return -EBADF; | |
2183 | ||
2184 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2185 | err = -EBADF; | |
2186 | goto err_out; | |
2187 | } | |
2188 | ||
2189 | err = mnt_want_write_file(filp); | |
2190 | if (err) | |
2191 | goto err_out; | |
2192 | ||
2193 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2194 | range.pos_out, range.len); | |
2195 | ||
2196 | mnt_drop_write_file(filp); | |
2197 | ||
2198 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2199 | &range, sizeof(range))) | |
2200 | err = -EFAULT; | |
2201 | err_out: | |
2202 | fdput(dst); | |
2203 | return err; | |
2204 | } | |
2205 | ||
52656e6c JK |
2206 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2207 | { | |
2208 | switch (cmd) { | |
2209 | case F2FS_IOC_GETFLAGS: | |
2210 | return f2fs_ioc_getflags(filp, arg); | |
2211 | case F2FS_IOC_SETFLAGS: | |
2212 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2213 | case F2FS_IOC_GETVERSION: |
2214 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2215 | case F2FS_IOC_START_ATOMIC_WRITE: |
2216 | return f2fs_ioc_start_atomic_write(filp); | |
2217 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2218 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2219 | case F2FS_IOC_START_VOLATILE_WRITE: |
2220 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2221 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2222 | return f2fs_ioc_release_volatile_write(filp); | |
2223 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2224 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2225 | case F2FS_IOC_SHUTDOWN: |
2226 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2227 | case FITRIM: |
2228 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2229 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2230 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2231 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2232 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2233 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2234 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2235 | case F2FS_IOC_GARBAGE_COLLECT: |
2236 | return f2fs_ioc_gc(filp, arg); | |
456b88e4 CY |
2237 | case F2FS_IOC_WRITE_CHECKPOINT: |
2238 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2239 | case F2FS_IOC_DEFRAGMENT: |
2240 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2241 | case F2FS_IOC_MOVE_RANGE: |
2242 | return f2fs_ioc_move_range(filp, arg); | |
fbfa2cc5 JK |
2243 | default: |
2244 | return -ENOTTY; | |
2245 | } | |
2246 | } | |
2247 | ||
fcc85a4d JK |
2248 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2249 | { | |
b439b103 JK |
2250 | struct file *file = iocb->ki_filp; |
2251 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2252 | struct blk_plug plug; |
b439b103 | 2253 | ssize_t ret; |
fcc85a4d JK |
2254 | |
2255 | if (f2fs_encrypted_inode(inode) && | |
0b81d077 JK |
2256 | !fscrypt_has_encryption_key(inode) && |
2257 | fscrypt_get_encryption_info(inode)) | |
fcc85a4d JK |
2258 | return -EACCES; |
2259 | ||
b439b103 JK |
2260 | inode_lock(inode); |
2261 | ret = generic_write_checks(iocb, from); | |
2262 | if (ret > 0) { | |
2263 | ret = f2fs_preallocate_blocks(iocb, from); | |
9dfa1baf JK |
2264 | if (!ret) { |
2265 | blk_start_plug(&plug); | |
b439b103 | 2266 | ret = __generic_file_write_iter(iocb, from); |
9dfa1baf JK |
2267 | blk_finish_plug(&plug); |
2268 | } | |
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 | }; |