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> |
dc91de78 | 23 | #include <linux/uio.h> |
8da4b8c4 | 24 | #include <linux/uuid.h> |
4dd6f977 | 25 | #include <linux/file.h> |
fbfa2cc5 JK |
26 | |
27 | #include "f2fs.h" | |
28 | #include "node.h" | |
29 | #include "segment.h" | |
30 | #include "xattr.h" | |
31 | #include "acl.h" | |
c1c1b583 | 32 | #include "gc.h" |
db9f7c1a | 33 | #include "trace.h" |
a2a4a7e4 | 34 | #include <trace/events/f2fs.h> |
fbfa2cc5 | 35 | |
5a3a2d83 QS |
36 | static int f2fs_filemap_fault(struct vm_fault *vmf) |
37 | { | |
38 | struct inode *inode = file_inode(vmf->vma->vm_file); | |
39 | int err; | |
40 | ||
41 | down_read(&F2FS_I(inode)->i_mmap_sem); | |
42 | err = filemap_fault(vmf); | |
43 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
44 | ||
45 | return err; | |
46 | } | |
47 | ||
11bac800 | 48 | static int f2fs_vm_page_mkwrite(struct vm_fault *vmf) |
fbfa2cc5 JK |
49 | { |
50 | struct page *page = vmf->page; | |
11bac800 | 51 | struct inode *inode = file_inode(vmf->vma->vm_file); |
4081363f | 52 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 53 | struct dnode_of_data dn; |
e479556b | 54 | int err; |
fbfa2cc5 | 55 | |
fbfa2cc5 | 56 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
57 | |
58 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 59 | |
fbfa2cc5 | 60 | /* block allocation */ |
e479556b | 61 | f2fs_lock_op(sbi); |
b3d208f9 | 62 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 63 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
64 | if (err) { |
65 | f2fs_unlock_op(sbi); | |
b600965c | 66 | goto out; |
9ba69cf9 JK |
67 | } |
68 | f2fs_put_dnode(&dn); | |
69 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 70 | |
2c4db1a6 | 71 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 72 | |
11bac800 | 73 | file_update_time(vmf->vma->vm_file); |
5a3a2d83 | 74 | down_read(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 | 75 | lock_page(page); |
6bacf52f | 76 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 77 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 78 | !PageUptodate(page))) { |
fbfa2cc5 JK |
79 | unlock_page(page); |
80 | err = -EFAULT; | |
5a3a2d83 | 81 | goto out_sem; |
fbfa2cc5 JK |
82 | } |
83 | ||
84 | /* | |
85 | * check to see if the page is mapped already (no holes) | |
86 | */ | |
87 | if (PageMappedToDisk(page)) | |
9851e6e1 | 88 | goto mapped; |
fbfa2cc5 JK |
89 | |
90 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 91 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 92 | i_size_read(inode)) { |
fbfa2cc5 | 93 | unsigned offset; |
09cbfeaf KS |
94 | offset = i_size_read(inode) & ~PAGE_MASK; |
95 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
96 | } |
97 | set_page_dirty(page); | |
237c0790 JK |
98 | if (!PageUptodate(page)) |
99 | SetPageUptodate(page); | |
fbfa2cc5 | 100 | |
e943a10d | 101 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
102 | mapped: |
103 | /* fill the page */ | |
fec1d657 | 104 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
105 | |
106 | /* wait for GCed encrypted page writeback */ | |
107 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) | |
108 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); | |
109 | ||
5a3a2d83 QS |
110 | out_sem: |
111 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
fbfa2cc5 JK |
112 | out: |
113 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 114 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 JK |
115 | return block_page_mkwrite_return(err); |
116 | } | |
117 | ||
118 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
5a3a2d83 | 119 | .fault = f2fs_filemap_fault, |
f1820361 | 120 | .map_pages = filemap_map_pages, |
692bb55d | 121 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
122 | }; |
123 | ||
354a3399 JK |
124 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
125 | { | |
126 | struct dentry *dentry; | |
127 | ||
128 | inode = igrab(inode); | |
129 | dentry = d_find_any_alias(inode); | |
130 | iput(inode); | |
131 | if (!dentry) | |
132 | return 0; | |
133 | ||
f0947e5c JK |
134 | *pino = parent_ino(dentry); |
135 | dput(dentry); | |
354a3399 JK |
136 | return 1; |
137 | } | |
138 | ||
9d1589ef CY |
139 | static inline bool need_do_checkpoint(struct inode *inode) |
140 | { | |
4081363f | 141 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
142 | bool need_cp = false; |
143 | ||
144 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
145 | need_cp = true; | |
bbf156f7 | 146 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
e7d55452 | 147 | need_cp = true; |
9d1589ef CY |
148 | else if (file_wrong_pino(inode)) |
149 | need_cp = true; | |
150 | else if (!space_for_roll_forward(sbi)) | |
151 | need_cp = true; | |
152 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
153 | need_cp = true; | |
d5053a34 JK |
154 | else if (test_opt(sbi, FASTBOOT)) |
155 | need_cp = true; | |
a344b9fd JK |
156 | else if (sbi->active_logs == 2) |
157 | need_cp = true; | |
9d1589ef CY |
158 | |
159 | return need_cp; | |
160 | } | |
161 | ||
9c7bb702 CL |
162 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
163 | { | |
164 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
165 | bool ret = false; | |
166 | /* But we need to avoid that there are some inode updates */ | |
167 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
168 | ret = true; | |
169 | f2fs_put_page(i, 0); | |
170 | return ret; | |
171 | } | |
172 | ||
51455b19 CL |
173 | static void try_to_fix_pino(struct inode *inode) |
174 | { | |
175 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
176 | nid_t pino; | |
177 | ||
178 | down_write(&fi->i_sem); | |
51455b19 CL |
179 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
180 | get_parent_ino(inode, &pino)) { | |
205b9822 | 181 | f2fs_i_pino_write(inode, pino); |
51455b19 | 182 | file_got_pino(inode); |
51455b19 | 183 | } |
ee6d182f | 184 | up_write(&fi->i_sem); |
51455b19 CL |
185 | } |
186 | ||
608514de JK |
187 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
188 | int datasync, bool atomic) | |
fbfa2cc5 JK |
189 | { |
190 | struct inode *inode = file->f_mapping->host; | |
4081363f | 191 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 192 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
193 | int ret = 0; |
194 | bool need_cp = false; | |
195 | struct writeback_control wbc = { | |
c81bf1c8 | 196 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
197 | .nr_to_write = LONG_MAX, |
198 | .for_reclaim = 0, | |
199 | }; | |
200 | ||
6bacf52f | 201 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
202 | return 0; |
203 | ||
a2a4a7e4 | 204 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
205 | |
206 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 207 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 208 | set_inode_flag(inode, FI_NEED_IPU); |
fbfa2cc5 | 209 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
91942321 | 210 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 211 | |
a2a4a7e4 NJ |
212 | if (ret) { |
213 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 214 | return ret; |
a2a4a7e4 | 215 | } |
fbfa2cc5 | 216 | |
9c7bb702 | 217 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 218 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 219 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
220 | goto go_write; |
221 | } | |
222 | ||
6d99ba41 JK |
223 | /* |
224 | * if there is no written data, don't waste time to write recovery info. | |
225 | */ | |
91942321 | 226 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 227 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 228 | |
9c7bb702 CL |
229 | /* it may call write_inode just prior to fsync */ |
230 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 231 | goto go_write; |
19c9c466 | 232 | |
91942321 | 233 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 234 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
235 | goto flush_out; |
236 | goto out; | |
237 | } | |
19c9c466 | 238 | go_write: |
e5d2385e JK |
239 | /* |
240 | * Both of fdatasync() and fsync() are able to be recovered from | |
241 | * sudden-power-off. | |
242 | */ | |
91942321 | 243 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 244 | need_cp = need_do_checkpoint(inode); |
91942321 | 245 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 246 | |
fbfa2cc5 JK |
247 | if (need_cp) { |
248 | /* all the dirty node pages should be flushed for POR */ | |
249 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 250 | |
51455b19 CL |
251 | /* |
252 | * We've secured consistency through sync_fs. Following pino | |
253 | * will be used only for fsynced inodes after checkpoint. | |
254 | */ | |
255 | try_to_fix_pino(inode); | |
91942321 JK |
256 | clear_inode_flag(inode, FI_APPEND_WRITE); |
257 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
258 | goto out; |
259 | } | |
88bd02c9 | 260 | sync_nodes: |
26de9b11 | 261 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
262 | if (ret) |
263 | goto out; | |
51455b19 | 264 | |
871f599f | 265 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
266 | if (unlikely(f2fs_cp_error(sbi))) { |
267 | ret = -EIO; | |
871f599f | 268 | goto out; |
6d5a1495 | 269 | } |
871f599f | 270 | |
51455b19 | 271 | if (need_inode_block_update(sbi, ino)) { |
7c45729a | 272 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
273 | f2fs_write_inode(inode, NULL); |
274 | goto sync_nodes; | |
fbfa2cc5 | 275 | } |
51455b19 CL |
276 | |
277 | ret = wait_on_node_pages_writeback(sbi, ino); | |
278 | if (ret) | |
279 | goto out; | |
280 | ||
281 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 282 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 283 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 284 | flush_out: |
a49324f1 | 285 | remove_ino_entry(sbi, ino, UPDATE_INO); |
91942321 | 286 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
e7c75ab0 JK |
287 | if (!atomic) |
288 | ret = f2fs_issue_flush(sbi); | |
d0239e1b | 289 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 290 | out: |
a2a4a7e4 | 291 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 292 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
293 | return ret; |
294 | } | |
295 | ||
608514de JK |
296 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
297 | { | |
298 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
299 | } | |
300 | ||
7f7670fe JK |
301 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
302 | pgoff_t pgofs, int whence) | |
303 | { | |
304 | struct pagevec pvec; | |
305 | int nr_pages; | |
306 | ||
307 | if (whence != SEEK_DATA) | |
308 | return 0; | |
309 | ||
310 | /* find first dirty page index */ | |
311 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
312 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
313 | PAGECACHE_TAG_DIRTY, 1); | |
80dd9c0e | 314 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
315 | pagevec_release(&pvec); |
316 | return pgofs; | |
317 | } | |
318 | ||
319 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
320 | int whence) | |
321 | { | |
322 | switch (whence) { | |
323 | case SEEK_DATA: | |
324 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
325 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
326 | return true; | |
327 | break; | |
328 | case SEEK_HOLE: | |
329 | if (blkaddr == NULL_ADDR) | |
330 | return true; | |
331 | break; | |
332 | } | |
333 | return false; | |
334 | } | |
335 | ||
267378d4 CY |
336 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
337 | { | |
338 | struct inode *inode = file->f_mapping->host; | |
339 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
340 | struct dnode_of_data dn; | |
7f7670fe JK |
341 | pgoff_t pgofs, end_offset, dirty; |
342 | loff_t data_ofs = offset; | |
343 | loff_t isize; | |
267378d4 CY |
344 | int err = 0; |
345 | ||
5955102c | 346 | inode_lock(inode); |
267378d4 CY |
347 | |
348 | isize = i_size_read(inode); | |
349 | if (offset >= isize) | |
350 | goto fail; | |
351 | ||
352 | /* handle inline data case */ | |
622f28ae | 353 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
354 | if (whence == SEEK_HOLE) |
355 | data_ofs = isize; | |
356 | goto found; | |
357 | } | |
358 | ||
09cbfeaf | 359 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 360 | |
7f7670fe JK |
361 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
362 | ||
09cbfeaf | 363 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 364 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 365 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
366 | if (err && err != -ENOENT) { |
367 | goto fail; | |
368 | } else if (err == -ENOENT) { | |
e1c42045 | 369 | /* direct node does not exists */ |
267378d4 | 370 | if (whence == SEEK_DATA) { |
3cf45747 | 371 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
372 | continue; |
373 | } else { | |
374 | goto found; | |
375 | } | |
376 | } | |
377 | ||
81ca7350 | 378 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
379 | |
380 | /* find data/hole in dnode block */ | |
381 | for (; dn.ofs_in_node < end_offset; | |
382 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 383 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 384 | block_t blkaddr; |
7a2af766 CY |
385 | blkaddr = datablock_addr(dn.inode, |
386 | dn.node_page, dn.ofs_in_node); | |
267378d4 | 387 | |
7f7670fe | 388 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
389 | f2fs_put_dnode(&dn); |
390 | goto found; | |
391 | } | |
392 | } | |
393 | f2fs_put_dnode(&dn); | |
394 | } | |
395 | ||
396 | if (whence == SEEK_DATA) | |
397 | goto fail; | |
267378d4 | 398 | found: |
fe369bc8 JK |
399 | if (whence == SEEK_HOLE && data_ofs > isize) |
400 | data_ofs = isize; | |
5955102c | 401 | inode_unlock(inode); |
267378d4 CY |
402 | return vfs_setpos(file, data_ofs, maxbytes); |
403 | fail: | |
5955102c | 404 | inode_unlock(inode); |
267378d4 CY |
405 | return -ENXIO; |
406 | } | |
407 | ||
408 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
409 | { | |
410 | struct inode *inode = file->f_mapping->host; | |
411 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
412 | ||
413 | switch (whence) { | |
414 | case SEEK_SET: | |
415 | case SEEK_CUR: | |
416 | case SEEK_END: | |
417 | return generic_file_llseek_size(file, offset, whence, | |
418 | maxbytes, i_size_read(inode)); | |
419 | case SEEK_DATA: | |
420 | case SEEK_HOLE: | |
0b4c5afd JK |
421 | if (offset < 0) |
422 | return -ENXIO; | |
267378d4 CY |
423 | return f2fs_seek_block(file, offset, whence); |
424 | } | |
425 | ||
426 | return -EINVAL; | |
427 | } | |
428 | ||
fbfa2cc5 JK |
429 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
430 | { | |
b3d208f9 | 431 | struct inode *inode = file_inode(file); |
b9d777b8 | 432 | int err; |
b3d208f9 JK |
433 | |
434 | /* we don't need to use inline_data strictly */ | |
b9d777b8 JK |
435 | err = f2fs_convert_inline_inode(inode); |
436 | if (err) | |
437 | return err; | |
b3d208f9 | 438 | |
fbfa2cc5 JK |
439 | file_accessed(file); |
440 | vma->vm_ops = &f2fs_file_vm_ops; | |
441 | return 0; | |
442 | } | |
443 | ||
fcc85a4d JK |
444 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
445 | { | |
33b13951 | 446 | struct dentry *dir; |
fcc85a4d | 447 | |
0abd675e CY |
448 | if (f2fs_encrypted_inode(inode)) { |
449 | int ret = fscrypt_get_encryption_info(inode); | |
fcc85a4d | 450 | if (ret) |
ae108668 | 451 | return -EACCES; |
0b81d077 | 452 | if (!fscrypt_has_encryption_key(inode)) |
ae108668 | 453 | return -ENOKEY; |
fcc85a4d | 454 | } |
33b13951 JK |
455 | dir = dget_parent(file_dentry(filp)); |
456 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
457 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
458 | dput(dir); | |
8074bb51 | 459 | return -EPERM; |
33b13951 JK |
460 | } |
461 | dput(dir); | |
0abd675e | 462 | return dquot_file_open(inode, filp); |
fcc85a4d JK |
463 | } |
464 | ||
b292dcab | 465 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 466 | { |
4081363f | 467 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 468 | struct f2fs_node *raw_node; |
19b2c30d | 469 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 | 470 | __le32 *addr; |
7a2af766 CY |
471 | int base = 0; |
472 | ||
473 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
474 | base = get_extra_isize(dn->inode); | |
fbfa2cc5 | 475 | |
45590710 | 476 | raw_node = F2FS_NODE(dn->node_page); |
7a2af766 | 477 | addr = blkaddr_in_node(raw_node) + base + ofs; |
fbfa2cc5 | 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) { |
34b5d5c2 | 528 | page = find_lock_page(mapping, index); |
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 | 536 | if (IS_ERR(page)) |
a78aaa2c | 537 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 538 | truncate_out: |
fec1d657 | 539 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 540 | zero_user(page, offset, PAGE_SIZE - offset); |
a9bcf9bc JK |
541 | |
542 | /* An encrypted inode should have a key and truncate the last page. */ | |
543 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); | |
544 | if (!cache_only) | |
0bfcfcca | 545 | set_page_dirty(page); |
fbfa2cc5 | 546 | f2fs_put_page(page, 1); |
b3d208f9 | 547 | return 0; |
fbfa2cc5 JK |
548 | } |
549 | ||
764aa3e9 | 550 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 551 | { |
4081363f | 552 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
553 | unsigned int blocksize = inode->i_sb->s_blocksize; |
554 | struct dnode_of_data dn; | |
555 | pgoff_t free_from; | |
9ffe0fb5 | 556 | int count = 0, err = 0; |
b3d208f9 | 557 | struct page *ipage; |
0bfcfcca | 558 | bool truncate_page = false; |
fbfa2cc5 | 559 | |
51dd6249 NJ |
560 | trace_f2fs_truncate_blocks_enter(inode, from); |
561 | ||
f7ef9b83 | 562 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 563 | |
09210c97 CY |
564 | if (free_from >= sbi->max_file_blocks) |
565 | goto free_partial; | |
566 | ||
764aa3e9 JK |
567 | if (lock) |
568 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 569 | |
b3d208f9 JK |
570 | ipage = get_node_page(sbi, inode->i_ino); |
571 | if (IS_ERR(ipage)) { | |
572 | err = PTR_ERR(ipage); | |
573 | goto out; | |
574 | } | |
575 | ||
576 | if (f2fs_has_inline_data(inode)) { | |
bd4667cb | 577 | truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 578 | f2fs_put_page(ipage, 1); |
0bfcfcca | 579 | truncate_page = true; |
b3d208f9 JK |
580 | goto out; |
581 | } | |
582 | ||
583 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 584 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
585 | if (err) { |
586 | if (err == -ENOENT) | |
587 | goto free_next; | |
b3d208f9 | 588 | goto out; |
1ce86bf6 JK |
589 | } |
590 | ||
81ca7350 | 591 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
592 | |
593 | count -= dn.ofs_in_node; | |
9850cf4a | 594 | f2fs_bug_on(sbi, count < 0); |
39936837 | 595 | |
fbfa2cc5 JK |
596 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
597 | truncate_data_blocks_range(&dn, count); | |
598 | free_from += count; | |
599 | } | |
600 | ||
601 | f2fs_put_dnode(&dn); | |
602 | free_next: | |
603 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
604 | out: |
605 | if (lock) | |
606 | f2fs_unlock_op(sbi); | |
09210c97 | 607 | free_partial: |
b3d208f9 JK |
608 | /* lastly zero out the first data page */ |
609 | if (!err) | |
0bfcfcca | 610 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 611 | |
51dd6249 | 612 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
613 | return err; |
614 | } | |
615 | ||
9a449e9c | 616 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 617 | { |
b0154891 CY |
618 | int err; |
619 | ||
fbfa2cc5 JK |
620 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
621 | S_ISLNK(inode->i_mode))) | |
b0154891 | 622 | return 0; |
fbfa2cc5 | 623 | |
51dd6249 NJ |
624 | trace_f2fs_truncate(inode); |
625 | ||
14b44d23 JK |
626 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
627 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { | |
628 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
629 | return -EIO; | |
630 | } | |
631 | #endif | |
92dffd01 | 632 | /* we should check inline_data size */ |
b9d777b8 | 633 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
634 | err = f2fs_convert_inline_inode(inode); |
635 | if (err) | |
636 | return err; | |
92dffd01 JK |
637 | } |
638 | ||
9a449e9c | 639 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
640 | if (err) |
641 | return err; | |
642 | ||
078cd827 | 643 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 644 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 645 | return 0; |
fbfa2cc5 JK |
646 | } |
647 | ||
a528d35e | 648 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
1c6d8ee4 | 649 | u32 request_mask, unsigned int query_flags) |
fbfa2cc5 | 650 | { |
a528d35e | 651 | struct inode *inode = d_inode(path->dentry); |
1c6d8ee4 CY |
652 | struct f2fs_inode_info *fi = F2FS_I(inode); |
653 | unsigned int flags; | |
654 | ||
655 | flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
656 | if (flags & FS_APPEND_FL) | |
657 | stat->attributes |= STATX_ATTR_APPEND; | |
658 | if (flags & FS_COMPR_FL) | |
659 | stat->attributes |= STATX_ATTR_COMPRESSED; | |
660 | if (f2fs_encrypted_inode(inode)) | |
661 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
662 | if (flags & FS_IMMUTABLE_FL) | |
663 | stat->attributes |= STATX_ATTR_IMMUTABLE; | |
664 | if (flags & FS_NODUMP_FL) | |
665 | stat->attributes |= STATX_ATTR_NODUMP; | |
666 | ||
667 | stat->attributes_mask |= (STATX_ATTR_APPEND | | |
668 | STATX_ATTR_COMPRESSED | | |
669 | STATX_ATTR_ENCRYPTED | | |
670 | STATX_ATTR_IMMUTABLE | | |
671 | STATX_ATTR_NODUMP); | |
672 | ||
fbfa2cc5 | 673 | generic_fillattr(inode, stat); |
fbfa2cc5 JK |
674 | return 0; |
675 | } | |
676 | ||
677 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
678 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
679 | { | |
fbfa2cc5 JK |
680 | unsigned int ia_valid = attr->ia_valid; |
681 | ||
682 | if (ia_valid & ATTR_UID) | |
683 | inode->i_uid = attr->ia_uid; | |
684 | if (ia_valid & ATTR_GID) | |
685 | inode->i_gid = attr->ia_gid; | |
686 | if (ia_valid & ATTR_ATIME) | |
687 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
688 | inode->i_sb->s_time_gran); | |
689 | if (ia_valid & ATTR_MTIME) | |
690 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
691 | inode->i_sb->s_time_gran); | |
692 | if (ia_valid & ATTR_CTIME) | |
693 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
694 | inode->i_sb->s_time_gran); | |
695 | if (ia_valid & ATTR_MODE) { | |
696 | umode_t mode = attr->ia_mode; | |
697 | ||
698 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
699 | mode &= ~S_ISGID; | |
91942321 | 700 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
701 | } |
702 | } | |
703 | #else | |
704 | #define __setattr_copy setattr_copy | |
705 | #endif | |
706 | ||
707 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
708 | { | |
2b0143b5 | 709 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 710 | int err; |
c0ed4405 | 711 | bool size_changed = false; |
fbfa2cc5 | 712 | |
31051c85 | 713 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
714 | if (err) |
715 | return err; | |
716 | ||
0abd675e CY |
717 | if (is_quota_modification(inode, attr)) { |
718 | err = dquot_initialize(inode); | |
719 | if (err) | |
720 | return err; | |
721 | } | |
722 | if ((attr->ia_valid & ATTR_UID && | |
723 | !uid_eq(attr->ia_uid, inode->i_uid)) || | |
724 | (attr->ia_valid & ATTR_GID && | |
725 | !gid_eq(attr->ia_gid, inode->i_gid))) { | |
726 | err = dquot_transfer(inode, attr); | |
727 | if (err) | |
728 | return err; | |
729 | } | |
730 | ||
09db6a2e | 731 | if (attr->ia_valid & ATTR_SIZE) { |
67773a1f EB |
732 | if (f2fs_encrypted_inode(inode)) { |
733 | err = fscrypt_get_encryption_info(inode); | |
734 | if (err) | |
735 | return err; | |
736 | if (!fscrypt_has_encryption_key(inode)) | |
737 | return -ENOKEY; | |
738 | } | |
fcc85a4d | 739 | |
3c454145 | 740 | if (attr->ia_size <= i_size_read(inode)) { |
5a3a2d83 | 741 | down_write(&F2FS_I(inode)->i_mmap_sem); |
09db6a2e | 742 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 743 | err = f2fs_truncate(inode); |
5a3a2d83 | 744 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b0154891 CY |
745 | if (err) |
746 | return err; | |
09db6a2e CY |
747 | } else { |
748 | /* | |
3c454145 CY |
749 | * do not trim all blocks after i_size if target size is |
750 | * larger than i_size. | |
09db6a2e | 751 | */ |
5a3a2d83 | 752 | down_write(&F2FS_I(inode)->i_mmap_sem); |
3c454145 | 753 | truncate_setsize(inode, attr->ia_size); |
5a3a2d83 | 754 | up_write(&F2FS_I(inode)->i_mmap_sem); |
0cab80ee CY |
755 | |
756 | /* should convert inline inode here */ | |
b9d777b8 | 757 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
758 | err = f2fs_convert_inline_inode(inode); |
759 | if (err) | |
760 | return err; | |
761 | } | |
078cd827 | 762 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 763 | } |
c0ed4405 YH |
764 | |
765 | size_changed = true; | |
fbfa2cc5 JK |
766 | } |
767 | ||
768 | __setattr_copy(inode, attr); | |
769 | ||
770 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 771 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
772 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
773 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
774 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
775 | } |
776 | } | |
777 | ||
c0ed4405 YH |
778 | /* file size may changed here */ |
779 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
780 | |
781 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
782 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
783 | ||
fbfa2cc5 JK |
784 | return err; |
785 | } | |
786 | ||
787 | const struct inode_operations f2fs_file_inode_operations = { | |
788 | .getattr = f2fs_getattr, | |
789 | .setattr = f2fs_setattr, | |
790 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 791 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 792 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 793 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 794 | #endif |
9ab70134 | 795 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
796 | }; |
797 | ||
6394328a | 798 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
799 | loff_t start, loff_t len) |
800 | { | |
4081363f | 801 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
802 | struct page *page; |
803 | ||
804 | if (!len) | |
6394328a | 805 | return 0; |
fbfa2cc5 | 806 | |
2c4db1a6 | 807 | f2fs_balance_fs(sbi, true); |
bd43df02 | 808 | |
e479556b | 809 | f2fs_lock_op(sbi); |
64aa7ed9 | 810 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 811 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 812 | |
6394328a CY |
813 | if (IS_ERR(page)) |
814 | return PTR_ERR(page); | |
815 | ||
fec1d657 | 816 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
817 | zero_user(page, start, len); |
818 | set_page_dirty(page); | |
819 | f2fs_put_page(page, 1); | |
820 | return 0; | |
fbfa2cc5 JK |
821 | } |
822 | ||
823 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
824 | { | |
fbfa2cc5 JK |
825 | int err; |
826 | ||
ea58711e | 827 | while (pg_start < pg_end) { |
fbfa2cc5 | 828 | struct dnode_of_data dn; |
ea58711e | 829 | pgoff_t end_offset, count; |
9eaeba70 | 830 | |
fbfa2cc5 | 831 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 832 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 833 | if (err) { |
ea58711e CY |
834 | if (err == -ENOENT) { |
835 | pg_start++; | |
fbfa2cc5 | 836 | continue; |
ea58711e | 837 | } |
fbfa2cc5 JK |
838 | return err; |
839 | } | |
840 | ||
81ca7350 | 841 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
842 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
843 | ||
844 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
845 | ||
846 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 847 | f2fs_put_dnode(&dn); |
ea58711e CY |
848 | |
849 | pg_start += count; | |
fbfa2cc5 JK |
850 | } |
851 | return 0; | |
852 | } | |
853 | ||
a66c7b2f | 854 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
855 | { |
856 | pgoff_t pg_start, pg_end; | |
857 | loff_t off_start, off_end; | |
b9d777b8 | 858 | int ret; |
fbfa2cc5 | 859 | |
b9d777b8 JK |
860 | ret = f2fs_convert_inline_inode(inode); |
861 | if (ret) | |
862 | return ret; | |
9ffe0fb5 | 863 | |
09cbfeaf KS |
864 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
865 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 866 | |
09cbfeaf KS |
867 | off_start = offset & (PAGE_SIZE - 1); |
868 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
869 | |
870 | if (pg_start == pg_end) { | |
6394328a | 871 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 872 | off_end - off_start); |
6394328a CY |
873 | if (ret) |
874 | return ret; | |
fbfa2cc5 | 875 | } else { |
6394328a CY |
876 | if (off_start) { |
877 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 878 | PAGE_SIZE - off_start); |
6394328a CY |
879 | if (ret) |
880 | return ret; | |
881 | } | |
882 | if (off_end) { | |
883 | ret = fill_zero(inode, pg_end, 0, off_end); | |
884 | if (ret) | |
885 | return ret; | |
886 | } | |
fbfa2cc5 JK |
887 | |
888 | if (pg_start < pg_end) { | |
889 | struct address_space *mapping = inode->i_mapping; | |
890 | loff_t blk_start, blk_end; | |
4081363f | 891 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 892 | |
2c4db1a6 | 893 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 894 | |
09cbfeaf KS |
895 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
896 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
5a3a2d83 | 897 | down_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
898 | truncate_inode_pages_range(mapping, blk_start, |
899 | blk_end - 1); | |
39936837 | 900 | |
e479556b | 901 | f2fs_lock_op(sbi); |
fbfa2cc5 | 902 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 903 | f2fs_unlock_op(sbi); |
5a3a2d83 | 904 | up_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
905 | } |
906 | } | |
907 | ||
fbfa2cc5 JK |
908 | return ret; |
909 | } | |
910 | ||
0a2aa8fb JK |
911 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
912 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
913 | { |
914 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
915 | struct dnode_of_data dn; | |
0a2aa8fb | 916 | int ret, done, i; |
ecbaa406 | 917 | |
0a2aa8fb | 918 | next_dnode: |
6e2c64ad | 919 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 920 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
921 | if (ret && ret != -ENOENT) { |
922 | return ret; | |
923 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
924 | if (dn.max_level == 0) |
925 | return -ENOENT; | |
926 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
927 | blkaddr += done; | |
928 | do_replace += done; | |
929 | goto next; | |
930 | } | |
931 | ||
932 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
933 | dn.ofs_in_node, len); | |
934 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
7a2af766 CY |
935 | *blkaddr = datablock_addr(dn.inode, |
936 | dn.node_page, dn.ofs_in_node); | |
0a2aa8fb JK |
937 | if (!is_checkpointed_data(sbi, *blkaddr)) { |
938 | ||
939 | if (test_opt(sbi, LFS)) { | |
940 | f2fs_put_dnode(&dn); | |
941 | return -ENOTSUPP; | |
942 | } | |
943 | ||
6e2c64ad | 944 | /* do not invalidate this block address */ |
f28b3434 | 945 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 946 | *do_replace = 1; |
b4ace337 | 947 | } |
6e2c64ad | 948 | } |
0a2aa8fb JK |
949 | f2fs_put_dnode(&dn); |
950 | next: | |
951 | len -= done; | |
952 | off += done; | |
953 | if (len) | |
954 | goto next_dnode; | |
955 | return 0; | |
956 | } | |
b4ace337 | 957 | |
0a2aa8fb JK |
958 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
959 | int *do_replace, pgoff_t off, int len) | |
960 | { | |
961 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
962 | struct dnode_of_data dn; | |
963 | int ret, i; | |
b4ace337 | 964 | |
0a2aa8fb JK |
965 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
966 | if (*do_replace == 0) | |
967 | continue; | |
b4ace337 | 968 | |
0a2aa8fb JK |
969 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
970 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
971 | if (ret) { | |
972 | dec_valid_block_count(sbi, inode, 1); | |
973 | invalidate_blocks(sbi, *blkaddr); | |
974 | } else { | |
975 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 976 | } |
0a2aa8fb JK |
977 | f2fs_put_dnode(&dn); |
978 | } | |
979 | return 0; | |
980 | } | |
981 | ||
982 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
983 | block_t *blkaddr, int *do_replace, | |
984 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
985 | { | |
986 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
987 | pgoff_t i = 0; | |
988 | int ret; | |
36abef4e | 989 | |
0a2aa8fb JK |
990 | while (i < len) { |
991 | if (blkaddr[i] == NULL_ADDR && !full) { | |
992 | i++; | |
993 | continue; | |
6e2c64ad | 994 | } |
b4ace337 | 995 | |
0a2aa8fb JK |
996 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
997 | struct dnode_of_data dn; | |
998 | struct node_info ni; | |
999 | size_t new_size; | |
1000 | pgoff_t ilen; | |
b4ace337 | 1001 | |
0a2aa8fb JK |
1002 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
1003 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
1004 | if (ret) | |
1005 | return ret; | |
b4ace337 | 1006 | |
0a2aa8fb JK |
1007 | get_node_info(sbi, dn.nid, &ni); |
1008 | ilen = min((pgoff_t) | |
1009 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
1010 | dn.ofs_in_node, len - i); | |
1011 | do { | |
7a2af766 CY |
1012 | dn.data_blkaddr = datablock_addr(dn.inode, |
1013 | dn.node_page, dn.ofs_in_node); | |
0a2aa8fb JK |
1014 | truncate_data_blocks_range(&dn, 1); |
1015 | ||
1016 | if (do_replace[i]) { | |
1017 | f2fs_i_blocks_write(src_inode, | |
0abd675e | 1018 | 1, false, false); |
0a2aa8fb | 1019 | f2fs_i_blocks_write(dst_inode, |
0abd675e | 1020 | 1, true, false); |
0a2aa8fb JK |
1021 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
1022 | blkaddr[i], ni.version, true, false); | |
1023 | ||
1024 | do_replace[i] = 0; | |
1025 | } | |
1026 | dn.ofs_in_node++; | |
1027 | i++; | |
1028 | new_size = (dst + i) << PAGE_SHIFT; | |
1029 | if (dst_inode->i_size < new_size) | |
1030 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 1031 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1032 | |
0a2aa8fb JK |
1033 | f2fs_put_dnode(&dn); |
1034 | } else { | |
1035 | struct page *psrc, *pdst; | |
1036 | ||
1037 | psrc = get_lock_data_page(src_inode, src + i, true); | |
1038 | if (IS_ERR(psrc)) | |
1039 | return PTR_ERR(psrc); | |
1040 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
1041 | true); | |
1042 | if (IS_ERR(pdst)) { | |
1043 | f2fs_put_page(psrc, 1); | |
1044 | return PTR_ERR(pdst); | |
1045 | } | |
1046 | f2fs_copy_page(psrc, pdst); | |
1047 | set_page_dirty(pdst); | |
1048 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1049 | f2fs_put_page(psrc, 1); |
b4ace337 | 1050 | |
0a2aa8fb JK |
1051 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
1052 | if (ret) | |
1053 | return ret; | |
1054 | i++; | |
1055 | } | |
6e2c64ad JK |
1056 | } |
1057 | return 0; | |
0a2aa8fb | 1058 | } |
b4ace337 | 1059 | |
0a2aa8fb JK |
1060 | static int __exchange_data_block(struct inode *src_inode, |
1061 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1062 | pgoff_t len, bool full) |
0a2aa8fb JK |
1063 | { |
1064 | block_t *src_blkaddr; | |
1065 | int *do_replace; | |
363cad7f | 1066 | pgoff_t olen; |
0a2aa8fb JK |
1067 | int ret; |
1068 | ||
363cad7f JK |
1069 | while (len) { |
1070 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1071 | |
a7c3e901 | 1072 | src_blkaddr = kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
363cad7f JK |
1073 | if (!src_blkaddr) |
1074 | return -ENOMEM; | |
0a2aa8fb | 1075 | |
a7c3e901 | 1076 | do_replace = kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
363cad7f JK |
1077 | if (!do_replace) { |
1078 | kvfree(src_blkaddr); | |
1079 | return -ENOMEM; | |
1080 | } | |
0a2aa8fb | 1081 | |
363cad7f JK |
1082 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1083 | do_replace, src, olen); | |
1084 | if (ret) | |
1085 | goto roll_back; | |
0a2aa8fb | 1086 | |
363cad7f JK |
1087 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1088 | do_replace, src, dst, olen, full); | |
1089 | if (ret) | |
1090 | goto roll_back; | |
1091 | ||
1092 | src += olen; | |
1093 | dst += olen; | |
1094 | len -= olen; | |
1095 | ||
1096 | kvfree(src_blkaddr); | |
1097 | kvfree(do_replace); | |
1098 | } | |
0a2aa8fb JK |
1099 | return 0; |
1100 | ||
1101 | roll_back: | |
1102 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1103 | kvfree(src_blkaddr); | |
1104 | kvfree(do_replace); | |
6e2c64ad JK |
1105 | return ret; |
1106 | } | |
b4ace337 | 1107 | |
6e2c64ad JK |
1108 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1109 | { | |
1110 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1111 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1112 | int ret; |
6e2c64ad | 1113 | |
0a2aa8fb JK |
1114 | f2fs_balance_fs(sbi, true); |
1115 | f2fs_lock_op(sbi); | |
5f281fab JK |
1116 | |
1117 | f2fs_drop_extent_tree(inode); | |
1118 | ||
0a2aa8fb JK |
1119 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1120 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1121 | return ret; |
1122 | } | |
1123 | ||
1124 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1125 | { | |
1126 | pgoff_t pg_start, pg_end; | |
1127 | loff_t new_size; | |
1128 | int ret; | |
1129 | ||
b4ace337 CY |
1130 | if (offset + len >= i_size_read(inode)) |
1131 | return -EINVAL; | |
1132 | ||
1133 | /* collapse range should be aligned to block size of f2fs. */ | |
1134 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1135 | return -EINVAL; | |
1136 | ||
b9d777b8 JK |
1137 | ret = f2fs_convert_inline_inode(inode); |
1138 | if (ret) | |
1139 | return ret; | |
97a7b2c2 | 1140 | |
09cbfeaf KS |
1141 | pg_start = offset >> PAGE_SHIFT; |
1142 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 | 1143 | |
5a3a2d83 | 1144 | down_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 CY |
1145 | /* write out all dirty pages from offset */ |
1146 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1147 | if (ret) | |
5a3a2d83 | 1148 | goto out; |
b4ace337 CY |
1149 | |
1150 | truncate_pagecache(inode, offset); | |
1151 | ||
1152 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1153 | if (ret) | |
5a3a2d83 | 1154 | goto out; |
b4ace337 | 1155 | |
6e2c64ad JK |
1156 | /* write out all moved pages, if possible */ |
1157 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1158 | truncate_pagecache(inode, offset); | |
1159 | ||
b4ace337 | 1160 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1161 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1162 | |
1163 | ret = truncate_blocks(inode, new_size, true); | |
1164 | if (!ret) | |
fc9581c8 | 1165 | f2fs_i_size_write(inode, new_size); |
b4ace337 | 1166 | |
5a3a2d83 QS |
1167 | out: |
1168 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
b4ace337 CY |
1169 | return ret; |
1170 | } | |
1171 | ||
6e961949 CY |
1172 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1173 | pgoff_t end) | |
1174 | { | |
1175 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1176 | pgoff_t index = start; | |
1177 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1178 | blkcnt_t count = 0; | |
1179 | int ret; | |
1180 | ||
1181 | for (; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1182 | if (datablock_addr(dn->inode, dn->node_page, |
1183 | dn->ofs_in_node) == NULL_ADDR) | |
6e961949 CY |
1184 | count++; |
1185 | } | |
1186 | ||
1187 | dn->ofs_in_node = ofs_in_node; | |
1188 | ret = reserve_new_blocks(dn, count); | |
1189 | if (ret) | |
1190 | return ret; | |
1191 | ||
1192 | dn->ofs_in_node = ofs_in_node; | |
1193 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1194 | dn->data_blkaddr = datablock_addr(dn->inode, |
1195 | dn->node_page, dn->ofs_in_node); | |
6e961949 CY |
1196 | /* |
1197 | * reserve_new_blocks will not guarantee entire block | |
1198 | * allocation. | |
1199 | */ | |
1200 | if (dn->data_blkaddr == NULL_ADDR) { | |
1201 | ret = -ENOSPC; | |
1202 | break; | |
1203 | } | |
1204 | if (dn->data_blkaddr != NEW_ADDR) { | |
1205 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1206 | dn->data_blkaddr = NEW_ADDR; | |
1207 | set_data_blkaddr(dn); | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1212 | ||
1213 | return ret; | |
1214 | } | |
1215 | ||
75cd4e09 CY |
1216 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1217 | int mode) | |
1218 | { | |
1219 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1220 | struct address_space *mapping = inode->i_mapping; | |
1221 | pgoff_t index, pg_start, pg_end; | |
1222 | loff_t new_size = i_size_read(inode); | |
1223 | loff_t off_start, off_end; | |
1224 | int ret = 0; | |
1225 | ||
75cd4e09 CY |
1226 | ret = inode_newsize_ok(inode, (len + offset)); |
1227 | if (ret) | |
1228 | return ret; | |
1229 | ||
b9d777b8 JK |
1230 | ret = f2fs_convert_inline_inode(inode); |
1231 | if (ret) | |
1232 | return ret; | |
75cd4e09 | 1233 | |
5a3a2d83 | 1234 | down_write(&F2FS_I(inode)->i_mmap_sem); |
75cd4e09 CY |
1235 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
1236 | if (ret) | |
5a3a2d83 | 1237 | goto out_sem; |
75cd4e09 CY |
1238 | |
1239 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1240 | ||
09cbfeaf KS |
1241 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1242 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1243 | |
09cbfeaf KS |
1244 | off_start = offset & (PAGE_SIZE - 1); |
1245 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1246 | |
1247 | if (pg_start == pg_end) { | |
6394328a CY |
1248 | ret = fill_zero(inode, pg_start, off_start, |
1249 | off_end - off_start); | |
1250 | if (ret) | |
5a3a2d83 | 1251 | goto out_sem; |
6394328a | 1252 | |
75cd4e09 CY |
1253 | new_size = max_t(loff_t, new_size, offset + len); |
1254 | } else { | |
1255 | if (off_start) { | |
6394328a | 1256 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1257 | PAGE_SIZE - off_start); |
6394328a | 1258 | if (ret) |
5a3a2d83 | 1259 | goto out_sem; |
6394328a | 1260 | |
75cd4e09 | 1261 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1262 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1263 | } |
1264 | ||
6e961949 | 1265 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1266 | struct dnode_of_data dn; |
6e961949 CY |
1267 | unsigned int end_offset; |
1268 | pgoff_t end; | |
75cd4e09 CY |
1269 | |
1270 | f2fs_lock_op(sbi); | |
1271 | ||
6e961949 CY |
1272 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1273 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1274 | if (ret) { |
1275 | f2fs_unlock_op(sbi); | |
1276 | goto out; | |
1277 | } | |
1278 | ||
6e961949 CY |
1279 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1280 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1281 | ||
1282 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1283 | f2fs_put_dnode(&dn); |
1284 | f2fs_unlock_op(sbi); | |
9434fcde CY |
1285 | |
1286 | f2fs_balance_fs(sbi, dn.node_changed); | |
1287 | ||
6e961949 CY |
1288 | if (ret) |
1289 | goto out; | |
75cd4e09 | 1290 | |
6e961949 | 1291 | index = end; |
75cd4e09 | 1292 | new_size = max_t(loff_t, new_size, |
6e961949 | 1293 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1294 | } |
1295 | ||
1296 | if (off_end) { | |
6394328a CY |
1297 | ret = fill_zero(inode, pg_end, 0, off_end); |
1298 | if (ret) | |
1299 | goto out; | |
1300 | ||
75cd4e09 CY |
1301 | new_size = max_t(loff_t, new_size, offset + len); |
1302 | } | |
1303 | } | |
1304 | ||
1305 | out: | |
ee6d182f | 1306 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1307 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1308 | out_sem: |
1309 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
75cd4e09 CY |
1310 | |
1311 | return ret; | |
1312 | } | |
1313 | ||
f62185d0 CY |
1314 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1315 | { | |
1316 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1317 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1318 | loff_t new_size; |
6e2c64ad | 1319 | int ret = 0; |
f62185d0 | 1320 | |
f62185d0 | 1321 | new_size = i_size_read(inode) + len; |
46e82fb1 KM |
1322 | ret = inode_newsize_ok(inode, new_size); |
1323 | if (ret) | |
1324 | return ret; | |
f62185d0 CY |
1325 | |
1326 | if (offset >= i_size_read(inode)) | |
1327 | return -EINVAL; | |
1328 | ||
1329 | /* insert range should be aligned to block size of f2fs. */ | |
1330 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1331 | return -EINVAL; | |
1332 | ||
b9d777b8 JK |
1333 | ret = f2fs_convert_inline_inode(inode); |
1334 | if (ret) | |
1335 | return ret; | |
97a7b2c2 | 1336 | |
2c4db1a6 | 1337 | f2fs_balance_fs(sbi, true); |
2a340760 | 1338 | |
5a3a2d83 | 1339 | down_write(&F2FS_I(inode)->i_mmap_sem); |
f62185d0 CY |
1340 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1341 | if (ret) | |
5a3a2d83 | 1342 | goto out; |
f62185d0 CY |
1343 | |
1344 | /* write out all dirty pages from offset */ | |
1345 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1346 | if (ret) | |
5a3a2d83 | 1347 | goto out; |
f62185d0 CY |
1348 | |
1349 | truncate_pagecache(inode, offset); | |
1350 | ||
09cbfeaf KS |
1351 | pg_start = offset >> PAGE_SHIFT; |
1352 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1353 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1354 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1355 | ||
1356 | while (!ret && idx > pg_start) { | |
1357 | nr = idx - pg_start; | |
1358 | if (nr > delta) | |
1359 | nr = delta; | |
1360 | idx -= nr; | |
f62185d0 | 1361 | |
f62185d0 | 1362 | f2fs_lock_op(sbi); |
5f281fab JK |
1363 | f2fs_drop_extent_tree(inode); |
1364 | ||
0a2aa8fb JK |
1365 | ret = __exchange_data_block(inode, inode, idx, |
1366 | idx + delta, nr, false); | |
f62185d0 CY |
1367 | f2fs_unlock_op(sbi); |
1368 | } | |
1369 | ||
6e2c64ad JK |
1370 | /* write out all moved pages, if possible */ |
1371 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1372 | truncate_pagecache(inode, offset); | |
1373 | ||
1374 | if (!ret) | |
fc9581c8 | 1375 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1376 | out: |
1377 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
f62185d0 CY |
1378 | return ret; |
1379 | } | |
1380 | ||
fbfa2cc5 JK |
1381 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1382 | loff_t len, int mode) | |
1383 | { | |
4081363f | 1384 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e12dd7bd JK |
1385 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1386 | pgoff_t pg_end; | |
fbfa2cc5 | 1387 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1388 | loff_t off_end; |
a7de6086 | 1389 | int err; |
fbfa2cc5 | 1390 | |
a7de6086 JK |
1391 | err = inode_newsize_ok(inode, (len + offset)); |
1392 | if (err) | |
1393 | return err; | |
fbfa2cc5 | 1394 | |
a7de6086 JK |
1395 | err = f2fs_convert_inline_inode(inode); |
1396 | if (err) | |
1397 | return err; | |
9e09fc85 | 1398 | |
2c4db1a6 | 1399 | f2fs_balance_fs(sbi, true); |
2a340760 | 1400 | |
e12dd7bd | 1401 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1402 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1403 | |
e12dd7bd JK |
1404 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1405 | map.m_len = pg_end - map.m_lblk; | |
1406 | if (off_end) | |
1407 | map.m_len++; | |
ead43275 | 1408 | |
a7de6086 JK |
1409 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1410 | if (err) { | |
e12dd7bd | 1411 | pgoff_t last_off; |
fbfa2cc5 | 1412 | |
e12dd7bd | 1413 | if (!map.m_len) |
a7de6086 | 1414 | return err; |
98397ff3 | 1415 | |
e12dd7bd JK |
1416 | last_off = map.m_lblk + map.m_len - 1; |
1417 | ||
1418 | /* update new size to the failed position */ | |
1419 | new_size = (last_off == pg_end) ? offset + len: | |
1420 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1421 | } else { | |
1422 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1423 | } |
1424 | ||
ee6d182f | 1425 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
fc9581c8 | 1426 | f2fs_i_size_write(inode, new_size); |
fbfa2cc5 | 1427 | |
a7de6086 | 1428 | return err; |
fbfa2cc5 JK |
1429 | } |
1430 | ||
1431 | static long f2fs_fallocate(struct file *file, int mode, | |
1432 | loff_t offset, loff_t len) | |
1433 | { | |
6131ffaa | 1434 | struct inode *inode = file_inode(file); |
587c0a42 | 1435 | long ret = 0; |
fbfa2cc5 | 1436 | |
c998012b CY |
1437 | /* f2fs only support ->fallocate for regular file */ |
1438 | if (!S_ISREG(inode->i_mode)) | |
1439 | return -EINVAL; | |
1440 | ||
f62185d0 CY |
1441 | if (f2fs_encrypted_inode(inode) && |
1442 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1443 | return -EOPNOTSUPP; |
1444 | ||
b4ace337 | 1445 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1446 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1447 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1448 | return -EOPNOTSUPP; |
1449 | ||
5955102c | 1450 | inode_lock(inode); |
3375f696 | 1451 | |
587c0a42 TY |
1452 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1453 | if (offset >= inode->i_size) | |
1454 | goto out; | |
1455 | ||
a66c7b2f | 1456 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1457 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1458 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1459 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1460 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1461 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1462 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1463 | } else { |
fbfa2cc5 | 1464 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1465 | } |
fbfa2cc5 | 1466 | |
3af60a49 | 1467 | if (!ret) { |
078cd827 | 1468 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1469 | f2fs_mark_inode_dirty_sync(inode, false); |
26787236 JK |
1470 | if (mode & FALLOC_FL_KEEP_SIZE) |
1471 | file_set_keep_isize(inode); | |
d0239e1b | 1472 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1473 | } |
3375f696 | 1474 | |
587c0a42 | 1475 | out: |
5955102c | 1476 | inode_unlock(inode); |
3375f696 | 1477 | |
c01e2853 | 1478 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1479 | return ret; |
1480 | } | |
1481 | ||
1e84371f JK |
1482 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1483 | { | |
de5307e4 JK |
1484 | /* |
1485 | * f2fs_relase_file is called at every close calls. So we should | |
1486 | * not drop any inmemory pages by close called by other process. | |
1487 | */ | |
1488 | if (!(filp->f_mode & FMODE_WRITE) || | |
1489 | atomic_read(&inode->i_writecount) != 1) | |
1490 | return 0; | |
1491 | ||
1e84371f JK |
1492 | /* some remained atomic pages should discarded */ |
1493 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1494 | drop_inmem_pages(inode); |
1e84371f | 1495 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1496 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1497 | stat_dec_volatile_write(inode); |
91942321 | 1498 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1499 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1500 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1501 | } |
1502 | return 0; | |
1503 | } | |
1504 | ||
7a10f017 JK |
1505 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
1506 | { | |
1507 | struct inode *inode = file_inode(file); | |
1508 | ||
1509 | /* | |
1510 | * If the process doing a transaction is crashed, we should do | |
1511 | * roll-back. Otherwise, other reader/write can see corrupted database | |
1512 | * until all the writers close its file. Since this should be done | |
1513 | * before dropping file lock, it needs to do in ->flush. | |
1514 | */ | |
1515 | if (f2fs_is_atomic_file(inode) && | |
1516 | F2FS_I(inode)->inmem_task == current) | |
1517 | drop_inmem_pages(inode); | |
1518 | return 0; | |
1519 | } | |
1520 | ||
52656e6c | 1521 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1522 | { |
6131ffaa | 1523 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1524 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1525 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1526 | return put_user(flags, (int __user *)arg); | |
1527 | } | |
fbfa2cc5 | 1528 | |
52656e6c JK |
1529 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1530 | { | |
1531 | struct inode *inode = file_inode(filp); | |
1532 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
69494229 | 1533 | unsigned int flags; |
52656e6c JK |
1534 | unsigned int oldflags; |
1535 | int ret; | |
fbfa2cc5 | 1536 | |
7fb17fe4 CY |
1537 | if (!inode_owner_or_capable(inode)) |
1538 | return -EACCES; | |
1539 | ||
1540 | if (get_user(flags, (int __user *)arg)) | |
1541 | return -EFAULT; | |
1542 | ||
52656e6c JK |
1543 | ret = mnt_want_write_file(filp); |
1544 | if (ret) | |
1545 | return ret; | |
fbfa2cc5 | 1546 | |
5955102c | 1547 | inode_lock(inode); |
fbfa2cc5 | 1548 | |
0abd675e CY |
1549 | /* Is it quota file? Do not allow user to mess with it */ |
1550 | if (IS_NOQUOTA(inode)) { | |
0abd675e CY |
1551 | ret = -EPERM; |
1552 | goto unlock_out; | |
1553 | } | |
1554 | ||
a72d4b97 CY |
1555 | flags = f2fs_mask_flags(inode->i_mode, flags); |
1556 | ||
52656e6c | 1557 | oldflags = fi->i_flags; |
fbfa2cc5 | 1558 | |
52656e6c JK |
1559 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1560 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
52656e6c | 1561 | ret = -EPERM; |
5ffff285 | 1562 | goto unlock_out; |
fbfa2cc5 | 1563 | } |
52656e6c | 1564 | } |
fbfa2cc5 | 1565 | |
52656e6c JK |
1566 | flags = flags & FS_FL_USER_MODIFIABLE; |
1567 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1568 | fi->i_flags = flags; | |
fbfa2cc5 | 1569 | |
078cd827 | 1570 | inode->i_ctime = current_time(inode); |
205b9822 | 1571 | f2fs_set_inode_flags(inode); |
93607124 | 1572 | f2fs_mark_inode_dirty_sync(inode, false); |
0abd675e | 1573 | unlock_out: |
a72d4b97 | 1574 | inode_unlock(inode); |
52656e6c JK |
1575 | mnt_drop_write_file(filp); |
1576 | return ret; | |
1577 | } | |
4b2fecc8 | 1578 | |
d49f3e89 CY |
1579 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1580 | { | |
1581 | struct inode *inode = file_inode(filp); | |
1582 | ||
1583 | return put_user(inode->i_generation, (int __user *)arg); | |
1584 | } | |
1585 | ||
88b88a66 JK |
1586 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1587 | { | |
1588 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1589 | int ret; |
88b88a66 JK |
1590 | |
1591 | if (!inode_owner_or_capable(inode)) | |
1592 | return -EACCES; | |
1593 | ||
e811898c JK |
1594 | if (!S_ISREG(inode->i_mode)) |
1595 | return -EINVAL; | |
1596 | ||
7fb17fe4 CY |
1597 | ret = mnt_want_write_file(filp); |
1598 | if (ret) | |
1599 | return ret; | |
1600 | ||
0fac558b CY |
1601 | inode_lock(inode); |
1602 | ||
1e84371f | 1603 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1604 | goto out; |
88b88a66 | 1605 | |
f4c9c743 CY |
1606 | ret = f2fs_convert_inline_inode(inode); |
1607 | if (ret) | |
7fb17fe4 | 1608 | goto out; |
88b88a66 | 1609 | |
91942321 | 1610 | set_inode_flag(inode, FI_ATOMIC_FILE); |
6c3acd97 | 1611 | set_inode_flag(inode, FI_HOT_DATA); |
d0239e1b JK |
1612 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1613 | ||
c27753d6 | 1614 | if (!get_dirty_pages(inode)) |
684ca7e5 | 1615 | goto inc_stat; |
c27753d6 JK |
1616 | |
1617 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1618 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1619 | inode->i_ino, get_dirty_pages(inode)); |
1620 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
684ca7e5 | 1621 | if (ret) { |
91942321 | 1622 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
684ca7e5 KM |
1623 | goto out; |
1624 | } | |
1625 | ||
1626 | inc_stat: | |
7a10f017 | 1627 | F2FS_I(inode)->inmem_task = current; |
26a28a0c JK |
1628 | stat_inc_atomic_write(inode); |
1629 | stat_update_max_atomic_write(inode); | |
684ca7e5 | 1630 | out: |
0fac558b | 1631 | inode_unlock(inode); |
7fb17fe4 | 1632 | mnt_drop_write_file(filp); |
c27753d6 | 1633 | return ret; |
88b88a66 JK |
1634 | } |
1635 | ||
1636 | static int f2fs_ioc_commit_atomic_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 | ||
7fb17fe4 CY |
1650 | if (f2fs_is_volatile_file(inode)) |
1651 | goto err_out; | |
1652 | ||
6282adbf | 1653 | if (f2fs_is_atomic_file(inode)) { |
29b96b54 | 1654 | ret = commit_inmem_pages(inode); |
5fe45743 | 1655 | if (ret) |
edb27dee | 1656 | goto err_out; |
5fe45743 | 1657 | |
26a28a0c | 1658 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1659 | if (!ret) { |
1660 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
1661 | stat_dec_atomic_write(inode); | |
447135a8 | 1662 | } |
26a28a0c JK |
1663 | } else { |
1664 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); | |
6282adbf | 1665 | } |
edb27dee | 1666 | err_out: |
0fac558b | 1667 | inode_unlock(inode); |
88b88a66 JK |
1668 | mnt_drop_write_file(filp); |
1669 | return ret; | |
1670 | } | |
1671 | ||
02a1335f JK |
1672 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1673 | { | |
1674 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1675 | int ret; |
02a1335f JK |
1676 | |
1677 | if (!inode_owner_or_capable(inode)) | |
1678 | return -EACCES; | |
1679 | ||
8ff0971f CY |
1680 | if (!S_ISREG(inode->i_mode)) |
1681 | return -EINVAL; | |
1682 | ||
7fb17fe4 CY |
1683 | ret = mnt_want_write_file(filp); |
1684 | if (ret) | |
1685 | return ret; | |
1686 | ||
0fac558b CY |
1687 | inode_lock(inode); |
1688 | ||
1e84371f | 1689 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1690 | goto out; |
1e84371f | 1691 | |
f4c9c743 CY |
1692 | ret = f2fs_convert_inline_inode(inode); |
1693 | if (ret) | |
7fb17fe4 | 1694 | goto out; |
b3d208f9 | 1695 | |
648d50ba CY |
1696 | stat_inc_volatile_write(inode); |
1697 | stat_update_max_volatile_write(inode); | |
1698 | ||
91942321 | 1699 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1700 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1701 | out: |
0fac558b | 1702 | inode_unlock(inode); |
7fb17fe4 CY |
1703 | mnt_drop_write_file(filp); |
1704 | return ret; | |
02a1335f JK |
1705 | } |
1706 | ||
1e84371f JK |
1707 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1708 | { | |
1709 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1710 | int ret; |
1e84371f JK |
1711 | |
1712 | if (!inode_owner_or_capable(inode)) | |
1713 | return -EACCES; | |
1714 | ||
7fb17fe4 CY |
1715 | ret = mnt_want_write_file(filp); |
1716 | if (ret) | |
1717 | return ret; | |
1718 | ||
0fac558b CY |
1719 | inode_lock(inode); |
1720 | ||
1e84371f | 1721 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1722 | goto out; |
1e84371f | 1723 | |
7fb17fe4 CY |
1724 | if (!f2fs_is_first_block_written(inode)) { |
1725 | ret = truncate_partial_data_page(inode, 0, true); | |
1726 | goto out; | |
1727 | } | |
3c6c2beb | 1728 | |
7fb17fe4 CY |
1729 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1730 | out: | |
0fac558b | 1731 | inode_unlock(inode); |
7fb17fe4 CY |
1732 | mnt_drop_write_file(filp); |
1733 | return ret; | |
1e84371f JK |
1734 | } |
1735 | ||
1736 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1737 | { | |
1738 | struct inode *inode = file_inode(filp); | |
1739 | int ret; | |
1740 | ||
1741 | if (!inode_owner_or_capable(inode)) | |
1742 | return -EACCES; | |
1743 | ||
1744 | ret = mnt_want_write_file(filp); | |
1745 | if (ret) | |
1746 | return ret; | |
1747 | ||
0fac558b CY |
1748 | inode_lock(inode); |
1749 | ||
26dc3d44 | 1750 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1751 | drop_inmem_pages(inode); |
732d5648 | 1752 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1753 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1754 | stat_dec_volatile_write(inode); |
608514de | 1755 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1756 | } |
de6a8ec9 | 1757 | |
0fac558b CY |
1758 | inode_unlock(inode); |
1759 | ||
1e84371f | 1760 | mnt_drop_write_file(filp); |
d0239e1b | 1761 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1762 | return ret; |
1763 | } | |
1764 | ||
1abff93d JK |
1765 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1766 | { | |
1767 | struct inode *inode = file_inode(filp); | |
1768 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1769 | struct super_block *sb = sbi->sb; | |
1770 | __u32 in; | |
7fb17fe4 | 1771 | int ret; |
1abff93d JK |
1772 | |
1773 | if (!capable(CAP_SYS_ADMIN)) | |
1774 | return -EPERM; | |
1775 | ||
1776 | if (get_user(in, (__u32 __user *)arg)) | |
1777 | return -EFAULT; | |
1778 | ||
7fb17fe4 CY |
1779 | ret = mnt_want_write_file(filp); |
1780 | if (ret) | |
1781 | return ret; | |
1782 | ||
1abff93d JK |
1783 | switch (in) { |
1784 | case F2FS_GOING_DOWN_FULLSYNC: | |
1785 | sb = freeze_bdev(sb->s_bdev); | |
1786 | if (sb && !IS_ERR(sb)) { | |
38f91ca8 | 1787 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1788 | thaw_bdev(sb->s_bdev, sb); |
1789 | } | |
1790 | break; | |
1791 | case F2FS_GOING_DOWN_METASYNC: | |
1792 | /* do checkpoint only */ | |
1793 | f2fs_sync_fs(sb, 1); | |
38f91ca8 | 1794 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1795 | break; |
1796 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1797 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1798 | break; |
c912a829 JK |
1799 | case F2FS_GOING_DOWN_METAFLUSH: |
1800 | sync_meta_pages(sbi, META, LONG_MAX); | |
38f91ca8 | 1801 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1802 | break; |
1abff93d | 1803 | default: |
7fb17fe4 CY |
1804 | ret = -EINVAL; |
1805 | goto out; | |
1abff93d | 1806 | } |
d0239e1b | 1807 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1808 | out: |
1809 | mnt_drop_write_file(filp); | |
1810 | return ret; | |
1abff93d JK |
1811 | } |
1812 | ||
52656e6c JK |
1813 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1814 | { | |
1815 | struct inode *inode = file_inode(filp); | |
1816 | struct super_block *sb = inode->i_sb; | |
1817 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1818 | struct fstrim_range range; | |
1819 | int ret; | |
4b2fecc8 | 1820 | |
52656e6c JK |
1821 | if (!capable(CAP_SYS_ADMIN)) |
1822 | return -EPERM; | |
4b2fecc8 | 1823 | |
52656e6c JK |
1824 | if (!blk_queue_discard(q)) |
1825 | return -EOPNOTSUPP; | |
4b2fecc8 | 1826 | |
52656e6c JK |
1827 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1828 | sizeof(range))) | |
1829 | return -EFAULT; | |
4b2fecc8 | 1830 | |
7fb17fe4 CY |
1831 | ret = mnt_want_write_file(filp); |
1832 | if (ret) | |
1833 | return ret; | |
1834 | ||
52656e6c JK |
1835 | range.minlen = max((unsigned int)range.minlen, |
1836 | q->limits.discard_granularity); | |
1837 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1838 | mnt_drop_write_file(filp); |
52656e6c JK |
1839 | if (ret < 0) |
1840 | return ret; | |
4b2fecc8 | 1841 | |
52656e6c JK |
1842 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1843 | sizeof(range))) | |
1844 | return -EFAULT; | |
d0239e1b | 1845 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1846 | return 0; |
1847 | } | |
1848 | ||
f424f664 JK |
1849 | static bool uuid_is_nonzero(__u8 u[16]) |
1850 | { | |
1851 | int i; | |
1852 | ||
1853 | for (i = 0; i < 16; i++) | |
1854 | if (u[i]) | |
1855 | return true; | |
1856 | return false; | |
1857 | } | |
1858 | ||
1859 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1860 | { | |
f424f664 JK |
1861 | struct inode *inode = file_inode(filp); |
1862 | ||
d0239e1b | 1863 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1864 | |
db717d8e | 1865 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
1866 | } |
1867 | ||
1868 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1869 | { | |
db717d8e | 1870 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
1871 | } |
1872 | ||
1873 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1874 | { | |
1875 | struct inode *inode = file_inode(filp); | |
1876 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1877 | int err; | |
1878 | ||
1879 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1880 | return -EOPNOTSUPP; | |
1881 | ||
1882 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1883 | goto got_it; | |
1884 | ||
1885 | err = mnt_want_write_file(filp); | |
1886 | if (err) | |
1887 | return err; | |
1888 | ||
1889 | /* update superblock with uuid */ | |
1890 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1891 | ||
c5bda1c8 | 1892 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1893 | if (err) { |
1894 | /* undo new data */ | |
1895 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
e8240f65 | 1896 | mnt_drop_write_file(filp); |
f424f664 JK |
1897 | return err; |
1898 | } | |
e8240f65 | 1899 | mnt_drop_write_file(filp); |
f424f664 JK |
1900 | got_it: |
1901 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1902 | 16)) | |
1903 | return -EFAULT; | |
1904 | return 0; | |
1905 | } | |
1906 | ||
c1c1b583 CY |
1907 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1908 | { | |
1909 | struct inode *inode = file_inode(filp); | |
1910 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1911 | __u32 sync; |
7fb17fe4 | 1912 | int ret; |
c1c1b583 CY |
1913 | |
1914 | if (!capable(CAP_SYS_ADMIN)) | |
1915 | return -EPERM; | |
1916 | ||
d530d4d8 | 1917 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1918 | return -EFAULT; |
1919 | ||
d530d4d8 CY |
1920 | if (f2fs_readonly(sbi->sb)) |
1921 | return -EROFS; | |
c1c1b583 | 1922 | |
7fb17fe4 CY |
1923 | ret = mnt_want_write_file(filp); |
1924 | if (ret) | |
1925 | return ret; | |
1926 | ||
d530d4d8 | 1927 | if (!sync) { |
7fb17fe4 CY |
1928 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1929 | ret = -EBUSY; | |
1930 | goto out; | |
1931 | } | |
d530d4d8 CY |
1932 | } else { |
1933 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1934 | } |
1935 | ||
e066b83c | 1936 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
7fb17fe4 CY |
1937 | out: |
1938 | mnt_drop_write_file(filp); | |
1939 | return ret; | |
c1c1b583 CY |
1940 | } |
1941 | ||
34dc77ad JK |
1942 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
1943 | { | |
1944 | struct inode *inode = file_inode(filp); | |
1945 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1946 | struct f2fs_gc_range range; | |
1947 | u64 end; | |
1948 | int ret; | |
1949 | ||
1950 | if (!capable(CAP_SYS_ADMIN)) | |
1951 | return -EPERM; | |
1952 | ||
1953 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, | |
1954 | sizeof(range))) | |
1955 | return -EFAULT; | |
1956 | ||
1957 | if (f2fs_readonly(sbi->sb)) | |
1958 | return -EROFS; | |
1959 | ||
1960 | ret = mnt_want_write_file(filp); | |
1961 | if (ret) | |
1962 | return ret; | |
1963 | ||
1964 | end = range.start + range.len; | |
1965 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) | |
1966 | return -EINVAL; | |
1967 | do_more: | |
1968 | if (!range.sync) { | |
1969 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
1970 | ret = -EBUSY; | |
1971 | goto out; | |
1972 | } | |
1973 | } else { | |
1974 | mutex_lock(&sbi->gc_mutex); | |
1975 | } | |
1976 | ||
1977 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); | |
1978 | range.start += sbi->blocks_per_seg; | |
1979 | if (range.start <= end) | |
1980 | goto do_more; | |
1981 | out: | |
1982 | mnt_drop_write_file(filp); | |
1983 | return ret; | |
1984 | } | |
1985 | ||
456b88e4 CY |
1986 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1987 | { | |
1988 | struct inode *inode = file_inode(filp); | |
1989 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 1990 | int ret; |
456b88e4 CY |
1991 | |
1992 | if (!capable(CAP_SYS_ADMIN)) | |
1993 | return -EPERM; | |
1994 | ||
1995 | if (f2fs_readonly(sbi->sb)) | |
1996 | return -EROFS; | |
1997 | ||
7fb17fe4 CY |
1998 | ret = mnt_want_write_file(filp); |
1999 | if (ret) | |
2000 | return ret; | |
2001 | ||
2002 | ret = f2fs_sync_fs(sbi->sb, 1); | |
2003 | ||
2004 | mnt_drop_write_file(filp); | |
2005 | return ret; | |
456b88e4 CY |
2006 | } |
2007 | ||
d323d005 CY |
2008 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
2009 | struct file *filp, | |
2010 | struct f2fs_defragment *range) | |
2011 | { | |
2012 | struct inode *inode = file_inode(filp); | |
da85985c | 2013 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
e15882b6 | 2014 | struct extent_info ei = {0,0,0}; |
d323d005 | 2015 | pgoff_t pg_start, pg_end; |
3519e3f9 | 2016 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 2017 | unsigned int total = 0, sec_num; |
d323d005 CY |
2018 | block_t blk_end = 0; |
2019 | bool fragmented = false; | |
2020 | int err; | |
2021 | ||
2022 | /* if in-place-update policy is enabled, don't waste time here */ | |
7eab0c0d | 2023 | if (need_inplace_update_policy(inode, NULL)) |
d323d005 CY |
2024 | return -EINVAL; |
2025 | ||
09cbfeaf KS |
2026 | pg_start = range->start >> PAGE_SHIFT; |
2027 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 2028 | |
2c4db1a6 | 2029 | f2fs_balance_fs(sbi, true); |
d323d005 | 2030 | |
5955102c | 2031 | inode_lock(inode); |
d323d005 CY |
2032 | |
2033 | /* writeback all dirty pages in the range */ | |
2034 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 2035 | range->start + range->len - 1); |
d323d005 CY |
2036 | if (err) |
2037 | goto out; | |
2038 | ||
2039 | /* | |
2040 | * lookup mapping info in extent cache, skip defragmenting if physical | |
2041 | * block addresses are continuous. | |
2042 | */ | |
2043 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
2044 | if (ei.fofs + ei.len >= pg_end) | |
2045 | goto out; | |
2046 | } | |
2047 | ||
2048 | map.m_lblk = pg_start; | |
d323d005 CY |
2049 | |
2050 | /* | |
2051 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
2052 | * physical block addresses are continuous even if there are hole(s) | |
2053 | * in logical blocks. | |
2054 | */ | |
2055 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 2056 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
2057 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
2058 | if (err) | |
2059 | goto out; | |
2060 | ||
2061 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
2062 | map.m_lblk++; | |
d323d005 CY |
2063 | continue; |
2064 | } | |
2065 | ||
2066 | if (blk_end && blk_end != map.m_pblk) { | |
2067 | fragmented = true; | |
2068 | break; | |
2069 | } | |
2070 | blk_end = map.m_pblk + map.m_len; | |
2071 | ||
2072 | map.m_lblk += map.m_len; | |
d323d005 CY |
2073 | } |
2074 | ||
2075 | if (!fragmented) | |
2076 | goto out; | |
2077 | ||
2078 | map.m_lblk = pg_start; | |
2079 | map.m_len = pg_end - pg_start; | |
2080 | ||
4ddb1a4d | 2081 | sec_num = (map.m_len + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
d323d005 CY |
2082 | |
2083 | /* | |
2084 | * make sure there are enough free section for LFS allocation, this can | |
2085 | * avoid defragment running in SSR mode when free section are allocated | |
2086 | * intensively | |
2087 | */ | |
7f3037a5 | 2088 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
2089 | err = -EAGAIN; |
2090 | goto out; | |
2091 | } | |
2092 | ||
2093 | while (map.m_lblk < pg_end) { | |
2094 | pgoff_t idx; | |
2095 | int cnt = 0; | |
2096 | ||
2097 | do_map: | |
a1c1e9b7 | 2098 | map.m_len = pg_end - map.m_lblk; |
d323d005 CY |
2099 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
2100 | if (err) | |
2101 | goto clear_out; | |
2102 | ||
2103 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
2104 | map.m_lblk++; | |
2105 | continue; | |
2106 | } | |
2107 | ||
91942321 | 2108 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2109 | |
2110 | idx = map.m_lblk; | |
2111 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2112 | struct page *page; | |
2113 | ||
2114 | page = get_lock_data_page(inode, idx, true); | |
2115 | if (IS_ERR(page)) { | |
2116 | err = PTR_ERR(page); | |
2117 | goto clear_out; | |
2118 | } | |
2119 | ||
2120 | set_page_dirty(page); | |
2121 | f2fs_put_page(page, 1); | |
2122 | ||
2123 | idx++; | |
2124 | cnt++; | |
2125 | total++; | |
2126 | } | |
2127 | ||
2128 | map.m_lblk = idx; | |
d323d005 CY |
2129 | |
2130 | if (idx < pg_end && cnt < blk_per_seg) | |
2131 | goto do_map; | |
2132 | ||
91942321 | 2133 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2134 | |
2135 | err = filemap_fdatawrite(inode->i_mapping); | |
2136 | if (err) | |
2137 | goto out; | |
2138 | } | |
2139 | clear_out: | |
91942321 | 2140 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2141 | out: |
5955102c | 2142 | inode_unlock(inode); |
d323d005 | 2143 | if (!err) |
09cbfeaf | 2144 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2145 | return err; |
2146 | } | |
2147 | ||
2148 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2149 | { | |
2150 | struct inode *inode = file_inode(filp); | |
2151 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2152 | struct f2fs_defragment range; | |
2153 | int err; | |
2154 | ||
2155 | if (!capable(CAP_SYS_ADMIN)) | |
2156 | return -EPERM; | |
2157 | ||
7eab0c0d | 2158 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
d323d005 CY |
2159 | return -EINVAL; |
2160 | ||
d7563861 KM |
2161 | if (f2fs_readonly(sbi->sb)) |
2162 | return -EROFS; | |
d323d005 CY |
2163 | |
2164 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
d7563861 KM |
2165 | sizeof(range))) |
2166 | return -EFAULT; | |
d323d005 CY |
2167 | |
2168 | /* verify alignment of offset & size */ | |
d7563861 KM |
2169 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2170 | return -EINVAL; | |
d323d005 | 2171 | |
1941d7bc | 2172 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
d7563861 KM |
2173 | sbi->max_file_blocks)) |
2174 | return -EINVAL; | |
2175 | ||
2176 | err = mnt_want_write_file(filp); | |
2177 | if (err) | |
2178 | return err; | |
1941d7bc | 2179 | |
d323d005 | 2180 | err = f2fs_defragment_range(sbi, filp, &range); |
d7563861 KM |
2181 | mnt_drop_write_file(filp); |
2182 | ||
d0239e1b | 2183 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 | 2184 | if (err < 0) |
d7563861 | 2185 | return err; |
d323d005 CY |
2186 | |
2187 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2188 | sizeof(range))) | |
d7563861 KM |
2189 | return -EFAULT; |
2190 | ||
2191 | return 0; | |
d323d005 CY |
2192 | } |
2193 | ||
4dd6f977 JK |
2194 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2195 | struct file *file_out, loff_t pos_out, size_t len) | |
2196 | { | |
2197 | struct inode *src = file_inode(file_in); | |
2198 | struct inode *dst = file_inode(file_out); | |
2199 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2200 | size_t olen = len, dst_max_i_size = 0; | |
2201 | size_t dst_osize; | |
2202 | int ret; | |
2203 | ||
2204 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2205 | src->i_sb != dst->i_sb) | |
2206 | return -EXDEV; | |
2207 | ||
2208 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2209 | return -EROFS; | |
2210 | ||
fe8494bf CY |
2211 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2212 | return -EINVAL; | |
4dd6f977 JK |
2213 | |
2214 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2215 | return -EOPNOTSUPP; | |
2216 | ||
d95fd91c FL |
2217 | if (src == dst) { |
2218 | if (pos_in == pos_out) | |
2219 | return 0; | |
2220 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2221 | return -EINVAL; | |
2222 | } | |
2223 | ||
4dd6f977 | 2224 | inode_lock(src); |
20a3d61d CY |
2225 | if (src != dst) { |
2226 | if (!inode_trylock(dst)) { | |
2227 | ret = -EBUSY; | |
2228 | goto out; | |
2229 | } | |
2230 | } | |
4dd6f977 JK |
2231 | |
2232 | ret = -EINVAL; | |
2233 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2234 | goto out_unlock; | |
2235 | if (len == 0) | |
2236 | olen = len = src->i_size - pos_in; | |
2237 | if (pos_in + len == src->i_size) | |
2238 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2239 | if (len == 0) { | |
2240 | ret = 0; | |
2241 | goto out_unlock; | |
2242 | } | |
2243 | ||
2244 | dst_osize = dst->i_size; | |
2245 | if (pos_out + olen > dst->i_size) | |
2246 | dst_max_i_size = pos_out + olen; | |
2247 | ||
2248 | /* verify the end result is block aligned */ | |
2249 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2250 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2251 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2252 | goto out_unlock; | |
2253 | ||
2254 | ret = f2fs_convert_inline_inode(src); | |
2255 | if (ret) | |
2256 | goto out_unlock; | |
2257 | ||
2258 | ret = f2fs_convert_inline_inode(dst); | |
2259 | if (ret) | |
2260 | goto out_unlock; | |
2261 | ||
2262 | /* write out all dirty pages from offset */ | |
2263 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2264 | pos_in, pos_in + len); | |
2265 | if (ret) | |
2266 | goto out_unlock; | |
2267 | ||
2268 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2269 | pos_out, pos_out + len); | |
2270 | if (ret) | |
2271 | goto out_unlock; | |
2272 | ||
2273 | f2fs_balance_fs(sbi, true); | |
2274 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2275 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2276 | pos_out >> F2FS_BLKSIZE_BITS, | |
2277 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2278 | |
2279 | if (!ret) { | |
2280 | if (dst_max_i_size) | |
2281 | f2fs_i_size_write(dst, dst_max_i_size); | |
2282 | else if (dst_osize != dst->i_size) | |
2283 | f2fs_i_size_write(dst, dst_osize); | |
2284 | } | |
2285 | f2fs_unlock_op(sbi); | |
2286 | out_unlock: | |
2287 | if (src != dst) | |
2288 | inode_unlock(dst); | |
20a3d61d | 2289 | out: |
4dd6f977 JK |
2290 | inode_unlock(src); |
2291 | return ret; | |
2292 | } | |
2293 | ||
2294 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2295 | { | |
2296 | struct f2fs_move_range range; | |
2297 | struct fd dst; | |
2298 | int err; | |
2299 | ||
2300 | if (!(filp->f_mode & FMODE_READ) || | |
2301 | !(filp->f_mode & FMODE_WRITE)) | |
2302 | return -EBADF; | |
2303 | ||
2304 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2305 | sizeof(range))) | |
2306 | return -EFAULT; | |
2307 | ||
2308 | dst = fdget(range.dst_fd); | |
2309 | if (!dst.file) | |
2310 | return -EBADF; | |
2311 | ||
2312 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2313 | err = -EBADF; | |
2314 | goto err_out; | |
2315 | } | |
2316 | ||
2317 | err = mnt_want_write_file(filp); | |
2318 | if (err) | |
2319 | goto err_out; | |
2320 | ||
2321 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2322 | range.pos_out, range.len); | |
2323 | ||
2324 | mnt_drop_write_file(filp); | |
3cecfa5f KM |
2325 | if (err) |
2326 | goto err_out; | |
4dd6f977 JK |
2327 | |
2328 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2329 | &range, sizeof(range))) | |
2330 | err = -EFAULT; | |
2331 | err_out: | |
2332 | fdput(dst); | |
2333 | return err; | |
2334 | } | |
2335 | ||
e066b83c JK |
2336 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2337 | { | |
2338 | struct inode *inode = file_inode(filp); | |
2339 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2340 | struct sit_info *sm = SIT_I(sbi); | |
2341 | unsigned int start_segno = 0, end_segno = 0; | |
2342 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2343 | struct f2fs_flush_device range; | |
2344 | int ret; | |
2345 | ||
2346 | if (!capable(CAP_SYS_ADMIN)) | |
2347 | return -EPERM; | |
2348 | ||
2349 | if (f2fs_readonly(sbi->sb)) | |
2350 | return -EROFS; | |
2351 | ||
2352 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, | |
2353 | sizeof(range))) | |
2354 | return -EFAULT; | |
2355 | ||
2356 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || | |
2357 | sbi->segs_per_sec != 1) { | |
2358 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2359 | "Can't flush %u in %d for segs_per_sec %u != 1\n", | |
2360 | range.dev_num, sbi->s_ndevs, | |
2361 | sbi->segs_per_sec); | |
2362 | return -EINVAL; | |
2363 | } | |
2364 | ||
2365 | ret = mnt_want_write_file(filp); | |
2366 | if (ret) | |
2367 | return ret; | |
2368 | ||
2369 | if (range.dev_num != 0) | |
2370 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2371 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2372 | ||
2373 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2374 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2375 | start_segno = dev_start_segno; | |
2376 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2377 | ||
2378 | while (start_segno < end_segno) { | |
2379 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2380 | ret = -EBUSY; | |
2381 | goto out; | |
2382 | } | |
2383 | sm->last_victim[GC_CB] = end_segno + 1; | |
2384 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2385 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2386 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2387 | if (ret == -EAGAIN) | |
2388 | ret = 0; | |
2389 | else if (ret < 0) | |
2390 | break; | |
2391 | start_segno++; | |
2392 | } | |
2393 | out: | |
2394 | mnt_drop_write_file(filp); | |
2395 | return ret; | |
2396 | } | |
2397 | ||
e65ef207 JK |
2398 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
2399 | { | |
2400 | struct inode *inode = file_inode(filp); | |
2401 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); | |
2402 | ||
2403 | /* Must validate to set it with SQLite behavior in Android. */ | |
2404 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; | |
2405 | ||
2406 | return put_user(sb_feature, (u32 __user *)arg); | |
2407 | } | |
e066b83c | 2408 | |
52656e6c JK |
2409 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2410 | { | |
2411 | switch (cmd) { | |
2412 | case F2FS_IOC_GETFLAGS: | |
2413 | return f2fs_ioc_getflags(filp, arg); | |
2414 | case F2FS_IOC_SETFLAGS: | |
2415 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2416 | case F2FS_IOC_GETVERSION: |
2417 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2418 | case F2FS_IOC_START_ATOMIC_WRITE: |
2419 | return f2fs_ioc_start_atomic_write(filp); | |
2420 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2421 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2422 | case F2FS_IOC_START_VOLATILE_WRITE: |
2423 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2424 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2425 | return f2fs_ioc_release_volatile_write(filp); | |
2426 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2427 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2428 | case F2FS_IOC_SHUTDOWN: |
2429 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2430 | case FITRIM: |
2431 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2432 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2433 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2434 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2435 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2436 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2437 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2438 | case F2FS_IOC_GARBAGE_COLLECT: |
2439 | return f2fs_ioc_gc(filp, arg); | |
34dc77ad JK |
2440 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
2441 | return f2fs_ioc_gc_range(filp, arg); | |
456b88e4 CY |
2442 | case F2FS_IOC_WRITE_CHECKPOINT: |
2443 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2444 | case F2FS_IOC_DEFRAGMENT: |
2445 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2446 | case F2FS_IOC_MOVE_RANGE: |
2447 | return f2fs_ioc_move_range(filp, arg); | |
e066b83c JK |
2448 | case F2FS_IOC_FLUSH_DEVICE: |
2449 | return f2fs_ioc_flush_device(filp, arg); | |
e65ef207 JK |
2450 | case F2FS_IOC_GET_FEATURES: |
2451 | return f2fs_ioc_get_features(filp, arg); | |
fbfa2cc5 JK |
2452 | default: |
2453 | return -ENOTTY; | |
2454 | } | |
2455 | } | |
2456 | ||
fcc85a4d JK |
2457 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2458 | { | |
b439b103 JK |
2459 | struct file *file = iocb->ki_filp; |
2460 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2461 | struct blk_plug plug; |
b439b103 | 2462 | ssize_t ret; |
fcc85a4d | 2463 | |
b439b103 JK |
2464 | inode_lock(inode); |
2465 | ret = generic_write_checks(iocb, from); | |
2466 | if (ret > 0) { | |
dc91de78 | 2467 | int err; |
a7de6086 | 2468 | |
dc91de78 JK |
2469 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
2470 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 2471 | |
dc91de78 | 2472 | err = f2fs_preallocate_blocks(iocb, from); |
a7de6086 JK |
2473 | if (err) { |
2474 | inode_unlock(inode); | |
2475 | return err; | |
9dfa1baf | 2476 | } |
a7de6086 JK |
2477 | blk_start_plug(&plug); |
2478 | ret = __generic_file_write_iter(iocb, from); | |
2479 | blk_finish_plug(&plug); | |
dc91de78 | 2480 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b439b103 JK |
2481 | } |
2482 | inode_unlock(inode); | |
2483 | ||
e2592217 CH |
2484 | if (ret > 0) |
2485 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2486 | return ret; |
fcc85a4d JK |
2487 | } |
2488 | ||
e9750824 NJ |
2489 | #ifdef CONFIG_COMPAT |
2490 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2491 | { | |
2492 | switch (cmd) { | |
2493 | case F2FS_IOC32_GETFLAGS: | |
2494 | cmd = F2FS_IOC_GETFLAGS; | |
2495 | break; | |
2496 | case F2FS_IOC32_SETFLAGS: | |
2497 | cmd = F2FS_IOC_SETFLAGS; | |
2498 | break; | |
04ef4b62 CY |
2499 | case F2FS_IOC32_GETVERSION: |
2500 | cmd = F2FS_IOC_GETVERSION; | |
2501 | break; | |
2502 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2503 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2504 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2505 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2506 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2507 | case F2FS_IOC_SHUTDOWN: | |
2508 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2509 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2510 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2511 | case F2FS_IOC_GARBAGE_COLLECT: | |
34dc77ad | 2512 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
04ef4b62 CY |
2513 | case F2FS_IOC_WRITE_CHECKPOINT: |
2514 | case F2FS_IOC_DEFRAGMENT: | |
4dd6f977 | 2515 | case F2FS_IOC_MOVE_RANGE: |
e066b83c | 2516 | case F2FS_IOC_FLUSH_DEVICE: |
e65ef207 | 2517 | case F2FS_IOC_GET_FEATURES: |
4dd6f977 | 2518 | break; |
e9750824 NJ |
2519 | default: |
2520 | return -ENOIOCTLCMD; | |
2521 | } | |
2522 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2523 | } | |
2524 | #endif | |
2525 | ||
fbfa2cc5 | 2526 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2527 | .llseek = f2fs_llseek, |
aad4f8bb | 2528 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2529 | .write_iter = f2fs_file_write_iter, |
2530 | .open = f2fs_file_open, | |
12662234 | 2531 | .release = f2fs_release_file, |
fbfa2cc5 | 2532 | .mmap = f2fs_file_mmap, |
7a10f017 | 2533 | .flush = f2fs_file_flush, |
fbfa2cc5 JK |
2534 | .fsync = f2fs_sync_file, |
2535 | .fallocate = f2fs_fallocate, | |
2536 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2537 | #ifdef CONFIG_COMPAT |
2538 | .compat_ioctl = f2fs_compat_ioctl, | |
2539 | #endif | |
fbfa2cc5 | 2540 | .splice_read = generic_file_splice_read, |
8d020765 | 2541 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2542 | }; |