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> |
f424f664 | 23 | #include <linux/random.h> |
13f00235 | 24 | #include <linux/uio.h> |
c1286ff4 JK |
25 | #include <linux/uuid.h> |
26 | #include <linux/file.h> | |
fbfa2cc5 JK |
27 | |
28 | #include "f2fs.h" | |
29 | #include "node.h" | |
30 | #include "segment.h" | |
31 | #include "xattr.h" | |
32 | #include "acl.h" | |
c1c1b583 | 33 | #include "gc.h" |
db9f7c1a | 34 | #include "trace.h" |
a2a4a7e4 | 35 | #include <trace/events/f2fs.h> |
fbfa2cc5 | 36 | |
13f00235 JK |
37 | static int f2fs_filemap_fault(struct vm_area_struct *vma, |
38 | struct vm_fault *vmf) | |
39 | { | |
40 | struct inode *inode = file_inode(vma->vm_file); | |
41 | int err; | |
42 | ||
43 | down_read(&F2FS_I(inode)->i_mmap_sem); | |
44 | err = filemap_fault(vma, vmf); | |
45 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
46 | ||
47 | return err; | |
48 | } | |
49 | ||
fbfa2cc5 JK |
50 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, |
51 | struct vm_fault *vmf) | |
52 | { | |
53 | struct page *page = vmf->page; | |
6131ffaa | 54 | struct inode *inode = file_inode(vma->vm_file); |
4081363f | 55 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 56 | struct dnode_of_data dn; |
e479556b | 57 | int err; |
fbfa2cc5 | 58 | |
fbfa2cc5 | 59 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
60 | |
61 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 62 | |
fbfa2cc5 | 63 | /* block allocation */ |
e479556b | 64 | f2fs_lock_op(sbi); |
b3d208f9 | 65 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 66 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
67 | if (err) { |
68 | f2fs_unlock_op(sbi); | |
b600965c | 69 | goto out; |
9ba69cf9 JK |
70 | } |
71 | f2fs_put_dnode(&dn); | |
72 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 73 | |
c1286ff4 JK |
74 | f2fs_balance_fs(sbi, dn.node_changed); |
75 | ||
9851e6e1 | 76 | file_update_time(vma->vm_file); |
13f00235 | 77 | down_read(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 | 78 | lock_page(page); |
6bacf52f | 79 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 80 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 81 | !PageUptodate(page))) { |
fbfa2cc5 JK |
82 | unlock_page(page); |
83 | err = -EFAULT; | |
13f00235 | 84 | goto out_sem; |
fbfa2cc5 JK |
85 | } |
86 | ||
87 | /* | |
88 | * check to see if the page is mapped already (no holes) | |
89 | */ | |
90 | if (PageMappedToDisk(page)) | |
9851e6e1 | 91 | goto mapped; |
fbfa2cc5 JK |
92 | |
93 | /* page is wholly or partially inside EOF */ | |
c1286ff4 | 94 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 95 | i_size_read(inode)) { |
fbfa2cc5 | 96 | unsigned offset; |
c1286ff4 JK |
97 | offset = i_size_read(inode) & ~PAGE_MASK; |
98 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
99 | } |
100 | set_page_dirty(page); | |
c1286ff4 JK |
101 | if (!PageUptodate(page)) |
102 | SetPageUptodate(page); | |
fbfa2cc5 | 103 | |
13f00235 JK |
104 | f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE); |
105 | ||
e943a10d | 106 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
107 | mapped: |
108 | /* fill the page */ | |
c1286ff4 | 109 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
110 | |
111 | /* wait for GCed encrypted page writeback */ | |
13f00235 JK |
112 | if (f2fs_encrypted_file(inode)) |
113 | f2fs_wait_on_block_writeback(sbi, dn.data_blkaddr); | |
08b39fbd | 114 | |
13f00235 JK |
115 | out_sem: |
116 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
fbfa2cc5 JK |
117 | out: |
118 | sb_end_pagefault(inode->i_sb); | |
c1286ff4 | 119 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 JK |
120 | return block_page_mkwrite_return(err); |
121 | } | |
122 | ||
123 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
13f00235 | 124 | .fault = f2fs_filemap_fault, |
f1820361 | 125 | .map_pages = filemap_map_pages, |
692bb55d | 126 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
127 | }; |
128 | ||
354a3399 JK |
129 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
130 | { | |
131 | struct dentry *dentry; | |
132 | ||
133 | inode = igrab(inode); | |
134 | dentry = d_find_any_alias(inode); | |
135 | iput(inode); | |
136 | if (!dentry) | |
137 | return 0; | |
138 | ||
f0947e5c JK |
139 | *pino = parent_ino(dentry); |
140 | dput(dentry); | |
354a3399 JK |
141 | return 1; |
142 | } | |
143 | ||
9d1589ef CY |
144 | static inline bool need_do_checkpoint(struct inode *inode) |
145 | { | |
4081363f | 146 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
147 | bool need_cp = false; |
148 | ||
149 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
150 | need_cp = true; | |
c1286ff4 | 151 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
e7d55452 | 152 | need_cp = true; |
9d1589ef CY |
153 | else if (file_wrong_pino(inode)) |
154 | need_cp = true; | |
155 | else if (!space_for_roll_forward(sbi)) | |
156 | need_cp = true; | |
157 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
158 | need_cp = true; | |
d5053a34 JK |
159 | else if (test_opt(sbi, FASTBOOT)) |
160 | need_cp = true; | |
a344b9fd JK |
161 | else if (sbi->active_logs == 2) |
162 | need_cp = true; | |
9d1589ef CY |
163 | |
164 | return need_cp; | |
165 | } | |
166 | ||
9c7bb702 CL |
167 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
168 | { | |
169 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
170 | bool ret = false; | |
171 | /* But we need to avoid that there are some inode updates */ | |
172 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
173 | ret = true; | |
174 | f2fs_put_page(i, 0); | |
175 | return ret; | |
176 | } | |
177 | ||
51455b19 CL |
178 | static void try_to_fix_pino(struct inode *inode) |
179 | { | |
180 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
181 | nid_t pino; | |
182 | ||
183 | down_write(&fi->i_sem); | |
51455b19 CL |
184 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
185 | get_parent_ino(inode, &pino)) { | |
c1286ff4 | 186 | f2fs_i_pino_write(inode, pino); |
51455b19 | 187 | file_got_pino(inode); |
51455b19 | 188 | } |
c1286ff4 | 189 | up_write(&fi->i_sem); |
51455b19 CL |
190 | } |
191 | ||
c1286ff4 JK |
192 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
193 | int datasync, bool atomic) | |
fbfa2cc5 JK |
194 | { |
195 | struct inode *inode = file->f_mapping->host; | |
4081363f | 196 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 197 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
198 | int ret = 0; |
199 | bool need_cp = false; | |
200 | struct writeback_control wbc = { | |
c81bf1c8 | 201 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
202 | .nr_to_write = LONG_MAX, |
203 | .for_reclaim = 0, | |
204 | }; | |
205 | ||
6bacf52f | 206 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
207 | return 0; |
208 | ||
a2a4a7e4 | 209 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
210 | |
211 | /* if fdatasync is triggered, let's do in-place-update */ | |
c1286ff4 JK |
212 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
213 | set_inode_flag(inode, FI_NEED_IPU); | |
fbfa2cc5 | 214 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
c1286ff4 | 215 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 216 | |
a2a4a7e4 NJ |
217 | if (ret) { |
218 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 219 | return ret; |
a2a4a7e4 | 220 | } |
fbfa2cc5 | 221 | |
9c7bb702 | 222 | /* if the inode is dirty, let's recover all the time */ |
8f5fcb80 | 223 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 224 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
225 | goto go_write; |
226 | } | |
227 | ||
6d99ba41 JK |
228 | /* |
229 | * if there is no written data, don't waste time to write recovery info. | |
230 | */ | |
c1286ff4 | 231 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 232 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 233 | |
9c7bb702 CL |
234 | /* it may call write_inode just prior to fsync */ |
235 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 236 | goto go_write; |
19c9c466 | 237 | |
c1286ff4 | 238 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 239 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
240 | goto flush_out; |
241 | goto out; | |
242 | } | |
19c9c466 | 243 | go_write: |
e5d2385e JK |
244 | /* |
245 | * Both of fdatasync() and fsync() are able to be recovered from | |
246 | * sudden-power-off. | |
247 | */ | |
c1286ff4 | 248 | down_read(&F2FS_I(inode)->i_sem); |
9d1589ef | 249 | need_cp = need_do_checkpoint(inode); |
c1286ff4 | 250 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 251 | |
fbfa2cc5 JK |
252 | if (need_cp) { |
253 | /* all the dirty node pages should be flushed for POR */ | |
254 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 255 | |
51455b19 CL |
256 | /* |
257 | * We've secured consistency through sync_fs. Following pino | |
258 | * will be used only for fsynced inodes after checkpoint. | |
259 | */ | |
260 | try_to_fix_pino(inode); | |
c1286ff4 JK |
261 | clear_inode_flag(inode, FI_APPEND_WRITE); |
262 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
263 | goto out; |
264 | } | |
88bd02c9 | 265 | sync_nodes: |
c1286ff4 JK |
266 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
267 | if (ret) | |
268 | goto out; | |
51455b19 | 269 | |
871f599f | 270 | /* if cp_error was enabled, we should avoid infinite loop */ |
c1286ff4 JK |
271 | if (unlikely(f2fs_cp_error(sbi))) { |
272 | ret = -EIO; | |
871f599f | 273 | goto out; |
c1286ff4 | 274 | } |
871f599f | 275 | |
51455b19 | 276 | if (need_inode_block_update(sbi, ino)) { |
0ef31c7b | 277 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
278 | f2fs_write_inode(inode, NULL); |
279 | goto sync_nodes; | |
fbfa2cc5 | 280 | } |
51455b19 | 281 | |
13f00235 JK |
282 | /* |
283 | * If it's atomic_write, it's just fine to keep write ordering. So | |
284 | * here we don't need to wait for node write completion, since we use | |
285 | * node chain which serializes node blocks. If one of node writes are | |
286 | * reordered, we can see simply broken chain, resulting in stopping | |
287 | * roll-forward recovery. It means we'll recover all or none node blocks | |
288 | * given fsync mark. | |
289 | */ | |
290 | if (!atomic) { | |
291 | ret = wait_on_node_pages_writeback(sbi, ino); | |
292 | if (ret) | |
293 | goto out; | |
294 | } | |
51455b19 CL |
295 | |
296 | /* once recovery info is written, don't need to tack this */ | |
c1286ff4 JK |
297 | remove_ino_entry(sbi, ino, APPEND_INO); |
298 | clear_inode_flag(inode, FI_APPEND_WRITE); | |
51455b19 | 299 | flush_out: |
c1286ff4 JK |
300 | remove_ino_entry(sbi, ino, UPDATE_INO); |
301 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
13f00235 JK |
302 | if (!atomic) |
303 | ret = f2fs_issue_flush(sbi); | |
c1286ff4 | 304 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 305 | out: |
a2a4a7e4 | 306 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
05ca3632 | 307 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
308 | return ret; |
309 | } | |
310 | ||
c1286ff4 JK |
311 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
312 | { | |
313 | return f2fs_do_sync_file(file, start, end, datasync, false); | |
314 | } | |
315 | ||
7f7670fe JK |
316 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
317 | pgoff_t pgofs, int whence) | |
318 | { | |
319 | struct pagevec pvec; | |
320 | int nr_pages; | |
321 | ||
322 | if (whence != SEEK_DATA) | |
323 | return 0; | |
324 | ||
325 | /* find first dirty page index */ | |
326 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
327 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
328 | PAGECACHE_TAG_DIRTY, 1); | |
c1286ff4 | 329 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
7f7670fe JK |
330 | pagevec_release(&pvec); |
331 | return pgofs; | |
332 | } | |
333 | ||
334 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
335 | int whence) | |
336 | { | |
337 | switch (whence) { | |
338 | case SEEK_DATA: | |
339 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
340 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
341 | return true; | |
342 | break; | |
343 | case SEEK_HOLE: | |
344 | if (blkaddr == NULL_ADDR) | |
345 | return true; | |
346 | break; | |
347 | } | |
348 | return false; | |
349 | } | |
350 | ||
267378d4 CY |
351 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
352 | { | |
353 | struct inode *inode = file->f_mapping->host; | |
354 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
355 | struct dnode_of_data dn; | |
7f7670fe JK |
356 | pgoff_t pgofs, end_offset, dirty; |
357 | loff_t data_ofs = offset; | |
358 | loff_t isize; | |
267378d4 CY |
359 | int err = 0; |
360 | ||
c1286ff4 | 361 | inode_lock(inode); |
267378d4 CY |
362 | |
363 | isize = i_size_read(inode); | |
364 | if (offset >= isize) | |
365 | goto fail; | |
366 | ||
367 | /* handle inline data case */ | |
622f28ae | 368 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
369 | if (whence == SEEK_HOLE) |
370 | data_ofs = isize; | |
371 | goto found; | |
372 | } | |
373 | ||
c1286ff4 | 374 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 375 | |
7f7670fe JK |
376 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
377 | ||
c1286ff4 | 378 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 379 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
c1286ff4 | 380 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
381 | if (err && err != -ENOENT) { |
382 | goto fail; | |
383 | } else if (err == -ENOENT) { | |
e1c42045 | 384 | /* direct node does not exists */ |
267378d4 | 385 | if (whence == SEEK_DATA) { |
c1286ff4 | 386 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
387 | continue; |
388 | } else { | |
389 | goto found; | |
390 | } | |
391 | } | |
392 | ||
c1286ff4 | 393 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
394 | |
395 | /* find data/hole in dnode block */ | |
396 | for (; dn.ofs_in_node < end_offset; | |
397 | dn.ofs_in_node++, pgofs++, | |
c1286ff4 | 398 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 399 | block_t blkaddr; |
13f00235 JK |
400 | blkaddr = datablock_addr(dn.inode, |
401 | dn.node_page, dn.ofs_in_node); | |
267378d4 | 402 | |
7f7670fe | 403 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
404 | f2fs_put_dnode(&dn); |
405 | goto found; | |
406 | } | |
407 | } | |
408 | f2fs_put_dnode(&dn); | |
409 | } | |
410 | ||
411 | if (whence == SEEK_DATA) | |
412 | goto fail; | |
267378d4 | 413 | found: |
fe369bc8 JK |
414 | if (whence == SEEK_HOLE && data_ofs > isize) |
415 | data_ofs = isize; | |
c1286ff4 | 416 | inode_unlock(inode); |
267378d4 CY |
417 | return vfs_setpos(file, data_ofs, maxbytes); |
418 | fail: | |
c1286ff4 | 419 | inode_unlock(inode); |
267378d4 CY |
420 | return -ENXIO; |
421 | } | |
422 | ||
423 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
424 | { | |
425 | struct inode *inode = file->f_mapping->host; | |
426 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
427 | ||
428 | switch (whence) { | |
429 | case SEEK_SET: | |
430 | case SEEK_CUR: | |
431 | case SEEK_END: | |
432 | return generic_file_llseek_size(file, offset, whence, | |
433 | maxbytes, i_size_read(inode)); | |
434 | case SEEK_DATA: | |
435 | case SEEK_HOLE: | |
0b4c5afd JK |
436 | if (offset < 0) |
437 | return -ENXIO; | |
267378d4 CY |
438 | return f2fs_seek_block(file, offset, whence); |
439 | } | |
440 | ||
441 | return -EINVAL; | |
442 | } | |
443 | ||
fbfa2cc5 JK |
444 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
445 | { | |
b3d208f9 | 446 | struct inode *inode = file_inode(file); |
c1286ff4 | 447 | int err; |
b3d208f9 JK |
448 | |
449 | /* we don't need to use inline_data strictly */ | |
c1286ff4 JK |
450 | err = f2fs_convert_inline_inode(inode); |
451 | if (err) | |
452 | return err; | |
b3d208f9 | 453 | |
fbfa2cc5 JK |
454 | file_accessed(file); |
455 | vma->vm_ops = &f2fs_file_vm_ops; | |
456 | return 0; | |
457 | } | |
458 | ||
fcc85a4d JK |
459 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
460 | { | |
c1286ff4 | 461 | struct dentry *dir; |
fcc85a4d | 462 | |
13f00235 JK |
463 | if (f2fs_encrypted_inode(inode)) { |
464 | int ret = fscrypt_get_encryption_info(inode); | |
fcc85a4d | 465 | if (ret) |
c1286ff4 JK |
466 | return -EACCES; |
467 | if (!fscrypt_has_encryption_key(inode)) | |
468 | return -ENOKEY; | |
fcc85a4d | 469 | } |
c1286ff4 JK |
470 | dir = dget_parent(file_dentry(filp)); |
471 | if (f2fs_encrypted_inode(d_inode(dir)) && | |
472 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { | |
473 | dput(dir); | |
474 | return -EPERM; | |
475 | } | |
476 | dput(dir); | |
13f00235 | 477 | return dquot_file_open(inode, filp); |
fcc85a4d JK |
478 | } |
479 | ||
b292dcab | 480 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 481 | { |
4081363f | 482 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 483 | struct f2fs_node *raw_node; |
19b2c30d | 484 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 | 485 | __le32 *addr; |
13f00235 JK |
486 | int base = 0; |
487 | ||
488 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
489 | base = get_extra_isize(dn->inode); | |
fbfa2cc5 | 490 | |
45590710 | 491 | raw_node = F2FS_NODE(dn->node_page); |
13f00235 | 492 | addr = blkaddr_in_node(raw_node) + base + ofs; |
fbfa2cc5 | 493 | |
6c311ec6 | 494 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
495 | block_t blkaddr = le32_to_cpu(*addr); |
496 | if (blkaddr == NULL_ADDR) | |
497 | continue; | |
498 | ||
e1509cf2 | 499 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 500 | set_data_blkaddr(dn); |
fbfa2cc5 | 501 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 502 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
c1286ff4 | 503 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
504 | nr_free++; |
505 | } | |
19b2c30d | 506 | |
fbfa2cc5 | 507 | if (nr_free) { |
19b2c30d CY |
508 | pgoff_t fofs; |
509 | /* | |
510 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
511 | * we will invalidate all blkaddr in the whole range. | |
512 | */ | |
513 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
c1286ff4 | 514 | dn->inode) + ofs; |
19b2c30d | 515 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 516 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
517 | } |
518 | dn->ofs_in_node = ofs; | |
51dd6249 | 519 | |
c1286ff4 | 520 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
521 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
522 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
523 | return nr_free; |
524 | } | |
525 | ||
526 | void truncate_data_blocks(struct dnode_of_data *dn) | |
527 | { | |
528 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
529 | } | |
530 | ||
0bfcfcca | 531 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 532 | bool cache_only) |
fbfa2cc5 | 533 | { |
c1286ff4 JK |
534 | unsigned offset = from & (PAGE_SIZE - 1); |
535 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 536 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
537 | struct page *page; |
538 | ||
43f3eae1 | 539 | if (!offset && !cache_only) |
b3d208f9 | 540 | return 0; |
fbfa2cc5 | 541 | |
43f3eae1 | 542 | if (cache_only) { |
c1286ff4 | 543 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
544 | if (page && PageUptodate(page)) |
545 | goto truncate_out; | |
546 | f2fs_put_page(page, 1); | |
b3d208f9 | 547 | return 0; |
43f3eae1 | 548 | } |
fbfa2cc5 | 549 | |
a56c7c6f | 550 | page = get_lock_data_page(inode, index, true); |
43f3eae1 | 551 | if (IS_ERR(page)) |
13f00235 | 552 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 553 | truncate_out: |
c1286ff4 JK |
554 | f2fs_wait_on_page_writeback(page, DATA, true); |
555 | zero_user(page, offset, PAGE_SIZE - offset); | |
13f00235 JK |
556 | |
557 | /* An encrypted inode should have a key and truncate the last page. */ | |
558 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); | |
559 | if (!cache_only) | |
0bfcfcca | 560 | set_page_dirty(page); |
fbfa2cc5 | 561 | f2fs_put_page(page, 1); |
b3d208f9 | 562 | return 0; |
fbfa2cc5 JK |
563 | } |
564 | ||
764aa3e9 | 565 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 566 | { |
4081363f | 567 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
568 | unsigned int blocksize = inode->i_sb->s_blocksize; |
569 | struct dnode_of_data dn; | |
570 | pgoff_t free_from; | |
9ffe0fb5 | 571 | int count = 0, err = 0; |
b3d208f9 | 572 | struct page *ipage; |
0bfcfcca | 573 | bool truncate_page = false; |
fbfa2cc5 | 574 | |
51dd6249 NJ |
575 | trace_f2fs_truncate_blocks_enter(inode, from); |
576 | ||
f7ef9b83 | 577 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
fbfa2cc5 | 578 | |
c1286ff4 JK |
579 | if (free_from >= sbi->max_file_blocks) |
580 | goto free_partial; | |
581 | ||
764aa3e9 JK |
582 | if (lock) |
583 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 584 | |
b3d208f9 JK |
585 | ipage = get_node_page(sbi, inode->i_ino); |
586 | if (IS_ERR(ipage)) { | |
587 | err = PTR_ERR(ipage); | |
588 | goto out; | |
589 | } | |
590 | ||
591 | if (f2fs_has_inline_data(inode)) { | |
13f00235 | 592 | truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 593 | f2fs_put_page(ipage, 1); |
0bfcfcca | 594 | truncate_page = true; |
b3d208f9 JK |
595 | goto out; |
596 | } | |
597 | ||
598 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
c1286ff4 | 599 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
600 | if (err) { |
601 | if (err == -ENOENT) | |
602 | goto free_next; | |
b3d208f9 | 603 | goto out; |
1ce86bf6 JK |
604 | } |
605 | ||
c1286ff4 | 606 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
607 | |
608 | count -= dn.ofs_in_node; | |
9850cf4a | 609 | f2fs_bug_on(sbi, count < 0); |
39936837 | 610 | |
fbfa2cc5 JK |
611 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
612 | truncate_data_blocks_range(&dn, count); | |
613 | free_from += count; | |
614 | } | |
615 | ||
616 | f2fs_put_dnode(&dn); | |
617 | free_next: | |
618 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
619 | out: |
620 | if (lock) | |
621 | f2fs_unlock_op(sbi); | |
c1286ff4 | 622 | free_partial: |
b3d208f9 JK |
623 | /* lastly zero out the first data page */ |
624 | if (!err) | |
0bfcfcca | 625 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 626 | |
51dd6249 | 627 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
628 | return err; |
629 | } | |
630 | ||
c1286ff4 | 631 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 632 | { |
b0154891 CY |
633 | int err; |
634 | ||
fbfa2cc5 JK |
635 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
636 | S_ISLNK(inode->i_mode))) | |
b0154891 | 637 | return 0; |
fbfa2cc5 | 638 | |
51dd6249 NJ |
639 | trace_f2fs_truncate(inode); |
640 | ||
13f00235 JK |
641 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
642 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { | |
643 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
644 | return -EIO; | |
645 | } | |
646 | #endif | |
92dffd01 | 647 | /* we should check inline_data size */ |
c1286ff4 | 648 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
649 | err = f2fs_convert_inline_inode(inode); |
650 | if (err) | |
651 | return err; | |
92dffd01 JK |
652 | } |
653 | ||
c1286ff4 | 654 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
655 | if (err) |
656 | return err; | |
657 | ||
dafac77e | 658 | inode->i_mtime = inode->i_ctime = current_time(inode); |
0ef31c7b | 659 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 660 | return 0; |
fbfa2cc5 JK |
661 | } |
662 | ||
2d4d9fb5 | 663 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
664 | struct dentry *dentry, struct kstat *stat) |
665 | { | |
2b0143b5 | 666 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 667 | generic_fillattr(inode, stat); |
fbfa2cc5 JK |
668 | return 0; |
669 | } | |
670 | ||
671 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
672 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
673 | { | |
fbfa2cc5 JK |
674 | unsigned int ia_valid = attr->ia_valid; |
675 | ||
676 | if (ia_valid & ATTR_UID) | |
677 | inode->i_uid = attr->ia_uid; | |
678 | if (ia_valid & ATTR_GID) | |
679 | inode->i_gid = attr->ia_gid; | |
680 | if (ia_valid & ATTR_ATIME) | |
681 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
682 | inode->i_sb->s_time_gran); | |
683 | if (ia_valid & ATTR_MTIME) | |
684 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
685 | inode->i_sb->s_time_gran); | |
686 | if (ia_valid & ATTR_CTIME) | |
687 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
688 | inode->i_sb->s_time_gran); | |
689 | if (ia_valid & ATTR_MODE) { | |
690 | umode_t mode = attr->ia_mode; | |
691 | ||
692 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
693 | mode &= ~S_ISGID; | |
c1286ff4 | 694 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
695 | } |
696 | } | |
697 | #else | |
698 | #define __setattr_copy setattr_copy | |
699 | #endif | |
700 | ||
701 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
702 | { | |
2b0143b5 | 703 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 704 | int err; |
02dcb93a | 705 | bool size_changed = false; |
fbfa2cc5 JK |
706 | |
707 | err = inode_change_ok(inode, attr); | |
708 | if (err) | |
709 | return err; | |
710 | ||
13f00235 JK |
711 | if (is_quota_modification(inode, attr)) { |
712 | err = dquot_initialize(inode); | |
713 | if (err) | |
714 | return err; | |
715 | } | |
716 | if ((attr->ia_valid & ATTR_UID && | |
717 | !uid_eq(attr->ia_uid, inode->i_uid)) || | |
718 | (attr->ia_valid & ATTR_GID && | |
719 | !gid_eq(attr->ia_gid, inode->i_gid))) { | |
720 | err = dquot_transfer(inode, attr); | |
721 | if (err) | |
722 | return err; | |
723 | } | |
724 | ||
09db6a2e | 725 | if (attr->ia_valid & ATTR_SIZE) { |
13f00235 JK |
726 | if (f2fs_encrypted_inode(inode)) { |
727 | err = fscrypt_get_encryption_info(inode); | |
728 | if (err) | |
729 | return err; | |
730 | if (!fscrypt_has_encryption_key(inode)) | |
731 | return -ENOKEY; | |
732 | } | |
fcc85a4d | 733 | |
3c454145 | 734 | if (attr->ia_size <= i_size_read(inode)) { |
13f00235 | 735 | down_write(&F2FS_I(inode)->i_mmap_sem); |
09db6a2e | 736 | truncate_setsize(inode, attr->ia_size); |
c1286ff4 | 737 | err = f2fs_truncate(inode); |
13f00235 | 738 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b0154891 CY |
739 | if (err) |
740 | return err; | |
09db6a2e CY |
741 | } else { |
742 | /* | |
3c454145 CY |
743 | * do not trim all blocks after i_size if target size is |
744 | * larger than i_size. | |
09db6a2e | 745 | */ |
13f00235 | 746 | down_write(&F2FS_I(inode)->i_mmap_sem); |
3c454145 | 747 | truncate_setsize(inode, attr->ia_size); |
13f00235 | 748 | up_write(&F2FS_I(inode)->i_mmap_sem); |
c1286ff4 JK |
749 | |
750 | /* should convert inline inode here */ | |
751 | if (!f2fs_may_inline_data(inode)) { | |
752 | err = f2fs_convert_inline_inode(inode); | |
753 | if (err) | |
754 | return err; | |
755 | } | |
dafac77e | 756 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 757 | } |
02dcb93a YH |
758 | |
759 | size_changed = true; | |
fbfa2cc5 JK |
760 | } |
761 | ||
762 | __setattr_copy(inode, attr); | |
763 | ||
764 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 765 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
c1286ff4 JK |
766 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
767 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
768 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
769 | } |
770 | } | |
771 | ||
02dcb93a YH |
772 | /* file size may changed here */ |
773 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
92c9dec3 JK |
774 | |
775 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
776 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
777 | ||
fbfa2cc5 JK |
778 | return err; |
779 | } | |
780 | ||
781 | const struct inode_operations f2fs_file_inode_operations = { | |
782 | .getattr = f2fs_getattr, | |
783 | .setattr = f2fs_setattr, | |
784 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 785 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
786 | #ifdef CONFIG_F2FS_FS_XATTR |
787 | .setxattr = generic_setxattr, | |
788 | .getxattr = generic_getxattr, | |
789 | .listxattr = f2fs_listxattr, | |
790 | .removexattr = generic_removexattr, | |
791 | #endif | |
9ab70134 | 792 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
793 | }; |
794 | ||
6394328a | 795 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
796 | loff_t start, loff_t len) |
797 | { | |
4081363f | 798 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
799 | struct page *page; |
800 | ||
801 | if (!len) | |
6394328a | 802 | return 0; |
fbfa2cc5 | 803 | |
c1286ff4 | 804 | f2fs_balance_fs(sbi, true); |
bd43df02 | 805 | |
e479556b | 806 | f2fs_lock_op(sbi); |
64aa7ed9 | 807 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 808 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 809 | |
6394328a CY |
810 | if (IS_ERR(page)) |
811 | return PTR_ERR(page); | |
812 | ||
c1286ff4 | 813 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
814 | zero_user(page, start, len); |
815 | set_page_dirty(page); | |
816 | f2fs_put_page(page, 1); | |
817 | return 0; | |
fbfa2cc5 JK |
818 | } |
819 | ||
820 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
821 | { | |
fbfa2cc5 JK |
822 | int err; |
823 | ||
ea58711e | 824 | while (pg_start < pg_end) { |
fbfa2cc5 | 825 | struct dnode_of_data dn; |
ea58711e | 826 | pgoff_t end_offset, count; |
9eaeba70 | 827 | |
fbfa2cc5 | 828 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 829 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 830 | if (err) { |
ea58711e CY |
831 | if (err == -ENOENT) { |
832 | pg_start++; | |
fbfa2cc5 | 833 | continue; |
ea58711e | 834 | } |
fbfa2cc5 JK |
835 | return err; |
836 | } | |
837 | ||
c1286ff4 | 838 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
839 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
840 | ||
841 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
842 | ||
843 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 844 | f2fs_put_dnode(&dn); |
ea58711e CY |
845 | |
846 | pg_start += count; | |
fbfa2cc5 JK |
847 | } |
848 | return 0; | |
849 | } | |
850 | ||
a66c7b2f | 851 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
852 | { |
853 | pgoff_t pg_start, pg_end; | |
854 | loff_t off_start, off_end; | |
c1286ff4 | 855 | int ret; |
fbfa2cc5 | 856 | |
c1286ff4 JK |
857 | ret = f2fs_convert_inline_inode(inode); |
858 | if (ret) | |
859 | return ret; | |
9ffe0fb5 | 860 | |
c1286ff4 JK |
861 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
862 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 863 | |
c1286ff4 JK |
864 | off_start = offset & (PAGE_SIZE - 1); |
865 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
866 | |
867 | if (pg_start == pg_end) { | |
6394328a | 868 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 869 | off_end - off_start); |
6394328a CY |
870 | if (ret) |
871 | return ret; | |
fbfa2cc5 | 872 | } else { |
6394328a CY |
873 | if (off_start) { |
874 | ret = fill_zero(inode, pg_start++, off_start, | |
c1286ff4 | 875 | PAGE_SIZE - off_start); |
6394328a CY |
876 | if (ret) |
877 | return ret; | |
878 | } | |
879 | if (off_end) { | |
880 | ret = fill_zero(inode, pg_end, 0, off_end); | |
881 | if (ret) | |
882 | return ret; | |
883 | } | |
fbfa2cc5 JK |
884 | |
885 | if (pg_start < pg_end) { | |
886 | struct address_space *mapping = inode->i_mapping; | |
887 | loff_t blk_start, blk_end; | |
4081363f | 888 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 889 | |
c1286ff4 | 890 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 891 | |
c1286ff4 JK |
892 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
893 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
13f00235 | 894 | down_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
895 | truncate_inode_pages_range(mapping, blk_start, |
896 | blk_end - 1); | |
39936837 | 897 | |
e479556b | 898 | f2fs_lock_op(sbi); |
fbfa2cc5 | 899 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 900 | f2fs_unlock_op(sbi); |
13f00235 | 901 | up_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
902 | } |
903 | } | |
904 | ||
fbfa2cc5 JK |
905 | return ret; |
906 | } | |
907 | ||
c1286ff4 JK |
908 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
909 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
910 | { |
911 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
912 | struct dnode_of_data dn; | |
c1286ff4 | 913 | int ret, done, i; |
ecbaa406 | 914 | |
c1286ff4 | 915 | next_dnode: |
6e2c64ad | 916 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
c1286ff4 | 917 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
918 | if (ret && ret != -ENOENT) { |
919 | return ret; | |
920 | } else if (ret == -ENOENT) { | |
c1286ff4 JK |
921 | if (dn.max_level == 0) |
922 | return -ENOENT; | |
923 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
924 | blkaddr += done; | |
925 | do_replace += done; | |
926 | goto next; | |
927 | } | |
928 | ||
929 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
930 | dn.ofs_in_node, len); | |
931 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
13f00235 JK |
932 | *blkaddr = datablock_addr(dn.inode, |
933 | dn.node_page, dn.ofs_in_node); | |
c1286ff4 JK |
934 | if (!is_checkpointed_data(sbi, *blkaddr)) { |
935 | ||
936 | if (test_opt(sbi, LFS)) { | |
937 | f2fs_put_dnode(&dn); | |
938 | return -ENOTSUPP; | |
939 | } | |
940 | ||
6e2c64ad | 941 | /* do not invalidate this block address */ |
c1286ff4 JK |
942 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
943 | *do_replace = 1; | |
b4ace337 | 944 | } |
6e2c64ad | 945 | } |
c1286ff4 JK |
946 | f2fs_put_dnode(&dn); |
947 | next: | |
948 | len -= done; | |
949 | off += done; | |
950 | if (len) | |
951 | goto next_dnode; | |
952 | return 0; | |
953 | } | |
b4ace337 | 954 | |
c1286ff4 JK |
955 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
956 | int *do_replace, pgoff_t off, int len) | |
957 | { | |
958 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
959 | struct dnode_of_data dn; | |
960 | int ret, i; | |
b4ace337 | 961 | |
c1286ff4 JK |
962 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
963 | if (*do_replace == 0) | |
964 | continue; | |
b4ace337 | 965 | |
c1286ff4 JK |
966 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
967 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
968 | if (ret) { | |
969 | dec_valid_block_count(sbi, inode, 1); | |
970 | invalidate_blocks(sbi, *blkaddr); | |
971 | } else { | |
972 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
973 | } | |
974 | f2fs_put_dnode(&dn); | |
975 | } | |
976 | return 0; | |
977 | } | |
978 | ||
979 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
980 | block_t *blkaddr, int *do_replace, | |
981 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
982 | { | |
983 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
984 | pgoff_t i = 0; | |
985 | int ret; | |
986 | ||
987 | while (i < len) { | |
988 | if (blkaddr[i] == NULL_ADDR && !full) { | |
989 | i++; | |
990 | continue; | |
6e2c64ad | 991 | } |
b4ace337 | 992 | |
c1286ff4 JK |
993 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
994 | struct dnode_of_data dn; | |
995 | struct node_info ni; | |
996 | size_t new_size; | |
997 | pgoff_t ilen; | |
b4ace337 | 998 | |
c1286ff4 JK |
999 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
1000 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
1001 | if (ret) | |
1002 | return ret; | |
b4ace337 | 1003 | |
c1286ff4 JK |
1004 | get_node_info(sbi, dn.nid, &ni); |
1005 | ilen = min((pgoff_t) | |
1006 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
1007 | dn.ofs_in_node, len - i); | |
1008 | do { | |
13f00235 JK |
1009 | dn.data_blkaddr = datablock_addr(dn.inode, |
1010 | dn.node_page, dn.ofs_in_node); | |
c1286ff4 JK |
1011 | truncate_data_blocks_range(&dn, 1); |
1012 | ||
1013 | if (do_replace[i]) { | |
1014 | f2fs_i_blocks_write(src_inode, | |
13f00235 | 1015 | 1, false, false); |
c1286ff4 | 1016 | f2fs_i_blocks_write(dst_inode, |
13f00235 | 1017 | 1, true, false); |
c1286ff4 JK |
1018 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
1019 | blkaddr[i], ni.version, true, false); | |
1020 | ||
1021 | do_replace[i] = 0; | |
1022 | } | |
1023 | dn.ofs_in_node++; | |
1024 | i++; | |
1025 | new_size = (dst + i) << PAGE_SHIFT; | |
1026 | if (dst_inode->i_size < new_size) | |
1027 | f2fs_i_size_write(dst_inode, new_size); | |
ab6f3626 | 1028 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1029 | |
c1286ff4 JK |
1030 | f2fs_put_dnode(&dn); |
1031 | } else { | |
1032 | struct page *psrc, *pdst; | |
1033 | ||
1034 | psrc = get_lock_data_page(src_inode, src + i, true); | |
1035 | if (IS_ERR(psrc)) | |
1036 | return PTR_ERR(psrc); | |
1037 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
1038 | true); | |
1039 | if (IS_ERR(pdst)) { | |
1040 | f2fs_put_page(psrc, 1); | |
1041 | return PTR_ERR(pdst); | |
1042 | } | |
1043 | f2fs_copy_page(psrc, pdst); | |
1044 | set_page_dirty(pdst); | |
1045 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1046 | f2fs_put_page(psrc, 1); |
b4ace337 | 1047 | |
c1286ff4 JK |
1048 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
1049 | if (ret) | |
1050 | return ret; | |
1051 | i++; | |
1052 | } | |
6e2c64ad JK |
1053 | } |
1054 | return 0; | |
c1286ff4 | 1055 | } |
b4ace337 | 1056 | |
c1286ff4 JK |
1057 | static int __exchange_data_block(struct inode *src_inode, |
1058 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
1059 | pgoff_t len, bool full) | |
1060 | { | |
1061 | block_t *src_blkaddr; | |
1062 | int *do_replace; | |
1063 | pgoff_t olen; | |
1064 | int ret; | |
1065 | ||
1066 | while (len) { | |
1067 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
1068 | ||
13f00235 | 1069 | src_blkaddr = kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
c1286ff4 JK |
1070 | if (!src_blkaddr) |
1071 | return -ENOMEM; | |
1072 | ||
13f00235 | 1073 | do_replace = kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
c1286ff4 JK |
1074 | if (!do_replace) { |
1075 | kvfree(src_blkaddr); | |
1076 | return -ENOMEM; | |
1077 | } | |
1078 | ||
1079 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, | |
1080 | do_replace, src, olen); | |
1081 | if (ret) | |
1082 | goto roll_back; | |
1083 | ||
1084 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, | |
1085 | do_replace, src, dst, olen, full); | |
1086 | if (ret) | |
1087 | goto roll_back; | |
1088 | ||
1089 | src += olen; | |
1090 | dst += olen; | |
1091 | len -= olen; | |
1092 | ||
1093 | kvfree(src_blkaddr); | |
1094 | kvfree(do_replace); | |
6e2c64ad | 1095 | } |
c1286ff4 JK |
1096 | return 0; |
1097 | ||
1098 | roll_back: | |
1099 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1100 | kvfree(src_blkaddr); | |
1101 | kvfree(do_replace); | |
6e2c64ad JK |
1102 | return ret; |
1103 | } | |
b4ace337 | 1104 | |
6e2c64ad JK |
1105 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1106 | { | |
1107 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1108 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
c1286ff4 | 1109 | int ret; |
6e2c64ad | 1110 | |
c1286ff4 JK |
1111 | f2fs_balance_fs(sbi, true); |
1112 | f2fs_lock_op(sbi); | |
1113 | ||
1114 | f2fs_drop_extent_tree(inode); | |
1115 | ||
1116 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); | |
1117 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1118 | return ret; |
1119 | } | |
1120 | ||
1121 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1122 | { | |
1123 | pgoff_t pg_start, pg_end; | |
1124 | loff_t new_size; | |
1125 | int ret; | |
1126 | ||
b4ace337 CY |
1127 | if (offset + len >= i_size_read(inode)) |
1128 | return -EINVAL; | |
1129 | ||
1130 | /* collapse range should be aligned to block size of f2fs. */ | |
1131 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1132 | return -EINVAL; | |
1133 | ||
c1286ff4 JK |
1134 | ret = f2fs_convert_inline_inode(inode); |
1135 | if (ret) | |
1136 | return ret; | |
97a7b2c2 | 1137 | |
c1286ff4 JK |
1138 | pg_start = offset >> PAGE_SHIFT; |
1139 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 | 1140 | |
13f00235 | 1141 | down_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 CY |
1142 | /* write out all dirty pages from offset */ |
1143 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1144 | if (ret) | |
13f00235 | 1145 | goto out; |
b4ace337 CY |
1146 | |
1147 | truncate_pagecache(inode, offset); | |
1148 | ||
1149 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1150 | if (ret) | |
13f00235 | 1151 | goto out; |
b4ace337 | 1152 | |
6e2c64ad JK |
1153 | /* write out all moved pages, if possible */ |
1154 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1155 | truncate_pagecache(inode, offset); | |
1156 | ||
b4ace337 | 1157 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1158 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1159 | |
1160 | ret = truncate_blocks(inode, new_size, true); | |
1161 | if (!ret) | |
c1286ff4 JK |
1162 | f2fs_i_size_write(inode, new_size); |
1163 | ||
13f00235 JK |
1164 | out: |
1165 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
c1286ff4 JK |
1166 | return ret; |
1167 | } | |
1168 | ||
1169 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, | |
1170 | pgoff_t end) | |
1171 | { | |
1172 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1173 | pgoff_t index = start; | |
1174 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1175 | blkcnt_t count = 0; | |
1176 | int ret; | |
1177 | ||
1178 | for (; index < end; index++, dn->ofs_in_node++) { | |
13f00235 JK |
1179 | if (datablock_addr(dn->inode, dn->node_page, |
1180 | dn->ofs_in_node) == NULL_ADDR) | |
c1286ff4 JK |
1181 | count++; |
1182 | } | |
1183 | ||
1184 | dn->ofs_in_node = ofs_in_node; | |
1185 | ret = reserve_new_blocks(dn, count); | |
1186 | if (ret) | |
1187 | return ret; | |
1188 | ||
1189 | dn->ofs_in_node = ofs_in_node; | |
1190 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
13f00235 JK |
1191 | dn->data_blkaddr = datablock_addr(dn->inode, |
1192 | dn->node_page, dn->ofs_in_node); | |
c1286ff4 JK |
1193 | /* |
1194 | * reserve_new_blocks will not guarantee entire block | |
1195 | * allocation. | |
1196 | */ | |
1197 | if (dn->data_blkaddr == NULL_ADDR) { | |
1198 | ret = -ENOSPC; | |
1199 | break; | |
1200 | } | |
1201 | if (dn->data_blkaddr != NEW_ADDR) { | |
1202 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1203 | dn->data_blkaddr = NEW_ADDR; | |
1204 | set_data_blkaddr(dn); | |
1205 | } | |
1206 | } | |
1207 | ||
1208 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
b4ace337 CY |
1209 | |
1210 | return ret; | |
1211 | } | |
1212 | ||
75cd4e09 CY |
1213 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1214 | int mode) | |
1215 | { | |
1216 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1217 | struct address_space *mapping = inode->i_mapping; | |
1218 | pgoff_t index, pg_start, pg_end; | |
1219 | loff_t new_size = i_size_read(inode); | |
1220 | loff_t off_start, off_end; | |
1221 | int ret = 0; | |
1222 | ||
75cd4e09 CY |
1223 | ret = inode_newsize_ok(inode, (len + offset)); |
1224 | if (ret) | |
1225 | return ret; | |
1226 | ||
c1286ff4 JK |
1227 | ret = f2fs_convert_inline_inode(inode); |
1228 | if (ret) | |
1229 | return ret; | |
75cd4e09 | 1230 | |
13f00235 | 1231 | down_write(&F2FS_I(inode)->i_mmap_sem); |
75cd4e09 CY |
1232 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
1233 | if (ret) | |
13f00235 | 1234 | goto out_sem; |
75cd4e09 CY |
1235 | |
1236 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1237 | ||
c1286ff4 JK |
1238 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1239 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1240 | |
c1286ff4 JK |
1241 | off_start = offset & (PAGE_SIZE - 1); |
1242 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1243 | |
1244 | if (pg_start == pg_end) { | |
6394328a CY |
1245 | ret = fill_zero(inode, pg_start, off_start, |
1246 | off_end - off_start); | |
1247 | if (ret) | |
13f00235 | 1248 | goto out_sem; |
6394328a | 1249 | |
75cd4e09 CY |
1250 | new_size = max_t(loff_t, new_size, offset + len); |
1251 | } else { | |
1252 | if (off_start) { | |
6394328a | 1253 | ret = fill_zero(inode, pg_start++, off_start, |
c1286ff4 | 1254 | PAGE_SIZE - off_start); |
6394328a | 1255 | if (ret) |
13f00235 | 1256 | goto out_sem; |
6394328a | 1257 | |
75cd4e09 | 1258 | new_size = max_t(loff_t, new_size, |
c1286ff4 | 1259 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1260 | } |
1261 | ||
c1286ff4 | 1262 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1263 | struct dnode_of_data dn; |
c1286ff4 JK |
1264 | unsigned int end_offset; |
1265 | pgoff_t end; | |
75cd4e09 CY |
1266 | |
1267 | f2fs_lock_op(sbi); | |
1268 | ||
c1286ff4 JK |
1269 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1270 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1271 | if (ret) { |
1272 | f2fs_unlock_op(sbi); | |
1273 | goto out; | |
1274 | } | |
1275 | ||
c1286ff4 JK |
1276 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1277 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
75cd4e09 | 1278 | |
c1286ff4 | 1279 | ret = f2fs_do_zero_range(&dn, index, end); |
75cd4e09 CY |
1280 | f2fs_put_dnode(&dn); |
1281 | f2fs_unlock_op(sbi); | |
4c7eae1f CY |
1282 | |
1283 | f2fs_balance_fs(sbi, dn.node_changed); | |
1284 | ||
c1286ff4 JK |
1285 | if (ret) |
1286 | goto out; | |
75cd4e09 | 1287 | |
c1286ff4 | 1288 | index = end; |
75cd4e09 | 1289 | new_size = max_t(loff_t, new_size, |
c1286ff4 | 1290 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1291 | } |
1292 | ||
1293 | if (off_end) { | |
6394328a CY |
1294 | ret = fill_zero(inode, pg_end, 0, off_end); |
1295 | if (ret) | |
1296 | goto out; | |
1297 | ||
75cd4e09 CY |
1298 | new_size = max_t(loff_t, new_size, offset + len); |
1299 | } | |
1300 | } | |
1301 | ||
1302 | out: | |
c1286ff4 JK |
1303 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
1304 | f2fs_i_size_write(inode, new_size); | |
13f00235 JK |
1305 | out_sem: |
1306 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
75cd4e09 CY |
1307 | |
1308 | return ret; | |
1309 | } | |
1310 | ||
f62185d0 CY |
1311 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1312 | { | |
1313 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
c1286ff4 | 1314 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1315 | loff_t new_size; |
6e2c64ad | 1316 | int ret = 0; |
f62185d0 | 1317 | |
f62185d0 | 1318 | new_size = i_size_read(inode) + len; |
13f00235 JK |
1319 | ret = inode_newsize_ok(inode, new_size); |
1320 | if (ret) | |
1321 | return ret; | |
f62185d0 CY |
1322 | |
1323 | if (offset >= i_size_read(inode)) | |
1324 | return -EINVAL; | |
1325 | ||
1326 | /* insert range should be aligned to block size of f2fs. */ | |
1327 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1328 | return -EINVAL; | |
1329 | ||
c1286ff4 JK |
1330 | ret = f2fs_convert_inline_inode(inode); |
1331 | if (ret) | |
1332 | return ret; | |
f62185d0 | 1333 | |
c1286ff4 | 1334 | f2fs_balance_fs(sbi, true); |
97a7b2c2 | 1335 | |
13f00235 | 1336 | down_write(&F2FS_I(inode)->i_mmap_sem); |
f62185d0 CY |
1337 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1338 | if (ret) | |
13f00235 | 1339 | goto out; |
f62185d0 CY |
1340 | |
1341 | /* write out all dirty pages from offset */ | |
1342 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1343 | if (ret) | |
13f00235 | 1344 | goto out; |
f62185d0 CY |
1345 | |
1346 | truncate_pagecache(inode, offset); | |
1347 | ||
c1286ff4 JK |
1348 | pg_start = offset >> PAGE_SHIFT; |
1349 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1350 | delta = pg_end - pg_start; |
c1286ff4 JK |
1351 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1352 | ||
1353 | while (!ret && idx > pg_start) { | |
1354 | nr = idx - pg_start; | |
1355 | if (nr > delta) | |
1356 | nr = delta; | |
1357 | idx -= nr; | |
f62185d0 | 1358 | |
f62185d0 | 1359 | f2fs_lock_op(sbi); |
c1286ff4 JK |
1360 | f2fs_drop_extent_tree(inode); |
1361 | ||
1362 | ret = __exchange_data_block(inode, inode, idx, | |
1363 | idx + delta, nr, false); | |
f62185d0 CY |
1364 | f2fs_unlock_op(sbi); |
1365 | } | |
1366 | ||
6e2c64ad JK |
1367 | /* write out all moved pages, if possible */ |
1368 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1369 | truncate_pagecache(inode, offset); | |
1370 | ||
1371 | if (!ret) | |
c1286ff4 | 1372 | f2fs_i_size_write(inode, new_size); |
13f00235 JK |
1373 | out: |
1374 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
f62185d0 CY |
1375 | return ret; |
1376 | } | |
1377 | ||
fbfa2cc5 JK |
1378 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1379 | loff_t len, int mode) | |
1380 | { | |
4081363f | 1381 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c1286ff4 JK |
1382 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
1383 | pgoff_t pg_end; | |
fbfa2cc5 | 1384 | loff_t new_size = i_size_read(inode); |
c1286ff4 | 1385 | loff_t off_end; |
bd8e4154 | 1386 | int err; |
497a0930 | 1387 | |
bd8e4154 JK |
1388 | err = inode_newsize_ok(inode, (len + offset)); |
1389 | if (err) | |
1390 | return err; | |
fbfa2cc5 | 1391 | |
bd8e4154 JK |
1392 | err = f2fs_convert_inline_inode(inode); |
1393 | if (err) | |
1394 | return err; | |
9e09fc85 | 1395 | |
c1286ff4 | 1396 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 1397 | |
c1286ff4 JK |
1398 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
1399 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 | 1400 | |
c1286ff4 JK |
1401 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1402 | map.m_len = pg_end - map.m_lblk; | |
1403 | if (off_end) | |
1404 | map.m_len++; | |
ead43275 | 1405 | |
bd8e4154 JK |
1406 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1407 | if (err) { | |
c1286ff4 JK |
1408 | pgoff_t last_off; |
1409 | ||
1410 | if (!map.m_len) | |
bd8e4154 | 1411 | return err; |
fbfa2cc5 | 1412 | |
c1286ff4 | 1413 | last_off = map.m_lblk + map.m_len - 1; |
98397ff3 | 1414 | |
c1286ff4 JK |
1415 | /* update new size to the failed position */ |
1416 | new_size = (last_off == pg_end) ? offset + len: | |
1417 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1418 | } else { | |
1419 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1420 | } |
1421 | ||
c1286ff4 JK |
1422 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
1423 | f2fs_i_size_write(inode, new_size); | |
fbfa2cc5 | 1424 | |
bd8e4154 | 1425 | return err; |
fbfa2cc5 JK |
1426 | } |
1427 | ||
1428 | static long f2fs_fallocate(struct file *file, int mode, | |
1429 | loff_t offset, loff_t len) | |
1430 | { | |
6131ffaa | 1431 | struct inode *inode = file_inode(file); |
587c0a42 | 1432 | long ret = 0; |
fbfa2cc5 | 1433 | |
c998012b CY |
1434 | /* f2fs only support ->fallocate for regular file */ |
1435 | if (!S_ISREG(inode->i_mode)) | |
1436 | return -EINVAL; | |
1437 | ||
f62185d0 CY |
1438 | if (f2fs_encrypted_inode(inode) && |
1439 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1440 | return -EOPNOTSUPP; |
1441 | ||
b4ace337 | 1442 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1443 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1444 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1445 | return -EOPNOTSUPP; |
1446 | ||
c1286ff4 | 1447 | inode_lock(inode); |
3375f696 | 1448 | |
587c0a42 TY |
1449 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1450 | if (offset >= inode->i_size) | |
1451 | goto out; | |
1452 | ||
a66c7b2f | 1453 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1454 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1455 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1456 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1457 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1458 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1459 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1460 | } else { |
fbfa2cc5 | 1461 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1462 | } |
fbfa2cc5 | 1463 | |
3af60a49 | 1464 | if (!ret) { |
dafac77e | 1465 | inode->i_mtime = inode->i_ctime = current_time(inode); |
0ef31c7b | 1466 | f2fs_mark_inode_dirty_sync(inode, false); |
9f495d82 JK |
1467 | if (mode & FALLOC_FL_KEEP_SIZE) |
1468 | file_set_keep_isize(inode); | |
c1286ff4 | 1469 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1470 | } |
3375f696 | 1471 | |
587c0a42 | 1472 | out: |
c1286ff4 | 1473 | inode_unlock(inode); |
3375f696 | 1474 | |
c01e2853 | 1475 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1476 | return ret; |
1477 | } | |
1478 | ||
1e84371f JK |
1479 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1480 | { | |
c1286ff4 JK |
1481 | /* |
1482 | * f2fs_relase_file is called at every close calls. So we should | |
1483 | * not drop any inmemory pages by close called by other process. | |
1484 | */ | |
1485 | if (!(filp->f_mode & FMODE_WRITE) || | |
1486 | atomic_read(&inode->i_writecount) != 1) | |
1487 | return 0; | |
1488 | ||
1e84371f JK |
1489 | /* some remained atomic pages should discarded */ |
1490 | if (f2fs_is_atomic_file(inode)) | |
c1286ff4 | 1491 | drop_inmem_pages(inode); |
1e84371f | 1492 | if (f2fs_is_volatile_file(inode)) { |
c1286ff4 | 1493 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
13f00235 | 1494 | stat_dec_volatile_write(inode); |
c1286ff4 | 1495 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1496 | filemap_fdatawrite(inode->i_mapping); |
c1286ff4 | 1497 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1498 | } |
1499 | return 0; | |
1500 | } | |
1501 | ||
13f00235 | 1502 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
fbfa2cc5 | 1503 | { |
13f00235 JK |
1504 | struct inode *inode = file_inode(file); |
1505 | ||
1506 | /* | |
1507 | * If the process doing a transaction is crashed, we should do | |
1508 | * roll-back. Otherwise, other reader/write can see corrupted database | |
1509 | * until all the writers close its file. Since this should be done | |
1510 | * before dropping file lock, it needs to do in ->flush. | |
1511 | */ | |
1512 | if (f2fs_is_atomic_file(inode) && | |
1513 | F2FS_I(inode)->inmem_task == current) | |
1514 | drop_inmem_pages(inode); | |
1515 | return 0; | |
fbfa2cc5 JK |
1516 | } |
1517 | ||
52656e6c | 1518 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1519 | { |
6131ffaa | 1520 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1521 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
1522 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
1523 | return put_user(flags, (int __user *)arg); | |
1524 | } | |
fbfa2cc5 | 1525 | |
52656e6c JK |
1526 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1527 | { | |
1528 | struct inode *inode = file_inode(filp); | |
1529 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
c1286ff4 | 1530 | unsigned int flags; |
52656e6c JK |
1531 | unsigned int oldflags; |
1532 | int ret; | |
fbfa2cc5 | 1533 | |
c1286ff4 JK |
1534 | if (!inode_owner_or_capable(inode)) |
1535 | return -EACCES; | |
1536 | ||
1537 | if (get_user(flags, (int __user *)arg)) | |
1538 | return -EFAULT; | |
1539 | ||
52656e6c JK |
1540 | ret = mnt_want_write_file(filp); |
1541 | if (ret) | |
1542 | return ret; | |
fbfa2cc5 | 1543 | |
c1286ff4 | 1544 | inode_lock(inode); |
fbfa2cc5 | 1545 | |
13f00235 JK |
1546 | /* Is it quota file? Do not allow user to mess with it */ |
1547 | if (IS_NOQUOTA(inode)) { | |
1548 | ret = -EPERM; | |
1549 | goto unlock_out; | |
1550 | } | |
1551 | ||
1552 | flags = f2fs_mask_flags(inode->i_mode, flags); | |
1553 | ||
52656e6c | 1554 | oldflags = fi->i_flags; |
fbfa2cc5 | 1555 | |
52656e6c JK |
1556 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
1557 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
52656e6c | 1558 | ret = -EPERM; |
13f00235 | 1559 | goto unlock_out; |
fbfa2cc5 | 1560 | } |
52656e6c | 1561 | } |
fbfa2cc5 | 1562 | |
52656e6c JK |
1563 | flags = flags & FS_FL_USER_MODIFIABLE; |
1564 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
1565 | fi->i_flags = flags; | |
fbfa2cc5 | 1566 | |
dafac77e | 1567 | inode->i_ctime = current_time(inode); |
c1286ff4 | 1568 | f2fs_set_inode_flags(inode); |
13f00235 JK |
1569 | f2fs_mark_inode_dirty_sync(inode, false); |
1570 | unlock_out: | |
1571 | inode_unlock(inode); | |
52656e6c JK |
1572 | mnt_drop_write_file(filp); |
1573 | return ret; | |
1574 | } | |
4b2fecc8 | 1575 | |
d49f3e89 CY |
1576 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1577 | { | |
1578 | struct inode *inode = file_inode(filp); | |
1579 | ||
1580 | return put_user(inode->i_generation, (int __user *)arg); | |
1581 | } | |
1582 | ||
88b88a66 JK |
1583 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1584 | { | |
1585 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1586 | int ret; |
88b88a66 JK |
1587 | |
1588 | if (!inode_owner_or_capable(inode)) | |
1589 | return -EACCES; | |
1590 | ||
13f00235 JK |
1591 | if (!S_ISREG(inode->i_mode)) |
1592 | return -EINVAL; | |
1593 | ||
c1286ff4 JK |
1594 | ret = mnt_want_write_file(filp); |
1595 | if (ret) | |
1596 | return ret; | |
1597 | ||
1598 | inode_lock(inode); | |
1e84371f JK |
1599 | |
1600 | if (f2fs_is_atomic_file(inode)) | |
c1286ff4 | 1601 | goto out; |
88b88a66 | 1602 | |
f4c9c743 CY |
1603 | ret = f2fs_convert_inline_inode(inode); |
1604 | if (ret) | |
c1286ff4 | 1605 | goto out; |
88b88a66 | 1606 | |
c1286ff4 | 1607 | set_inode_flag(inode, FI_ATOMIC_FILE); |
13f00235 | 1608 | set_inode_flag(inode, FI_HOT_DATA); |
c1286ff4 JK |
1609 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1610 | ||
1611 | if (!get_dirty_pages(inode)) | |
13f00235 | 1612 | goto inc_stat; |
c1286ff4 JK |
1613 | |
1614 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
036ed1b8 | 1615 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c1286ff4 JK |
1616 | inode->i_ino, get_dirty_pages(inode)); |
1617 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
13f00235 | 1618 | if (ret) { |
c1286ff4 | 1619 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
13f00235 JK |
1620 | clear_inode_flag(inode, FI_HOT_DATA); |
1621 | goto out; | |
1622 | } | |
1623 | ||
1624 | inc_stat: | |
1625 | F2FS_I(inode)->inmem_task = current; | |
97a43c70 JK |
1626 | stat_inc_atomic_write(inode); |
1627 | stat_update_max_atomic_write(inode); | |
13f00235 | 1628 | out: |
c1286ff4 JK |
1629 | inode_unlock(inode); |
1630 | mnt_drop_write_file(filp); | |
1631 | return ret; | |
88b88a66 JK |
1632 | } |
1633 | ||
1634 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1635 | { | |
1636 | struct inode *inode = file_inode(filp); | |
1637 | int ret; | |
1638 | ||
1639 | if (!inode_owner_or_capable(inode)) | |
1640 | return -EACCES; | |
1641 | ||
1642 | ret = mnt_want_write_file(filp); | |
1643 | if (ret) | |
1644 | return ret; | |
1645 | ||
c1286ff4 JK |
1646 | inode_lock(inode); |
1647 | ||
1648 | if (f2fs_is_volatile_file(inode)) | |
1649 | goto err_out; | |
1650 | ||
6282adbf | 1651 | if (f2fs_is_atomic_file(inode)) { |
c1286ff4 | 1652 | ret = commit_inmem_pages(inode); |
dc8b8cea | 1653 | if (ret) |
edb27dee | 1654 | goto err_out; |
dc8b8cea | 1655 | |
97a43c70 | 1656 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
dc8b8cea CY |
1657 | if (!ret) { |
1658 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
13f00235 | 1659 | clear_inode_flag(inode, FI_HOT_DATA); |
dc8b8cea CY |
1660 | stat_dec_atomic_write(inode); |
1661 | } | |
97a43c70 | 1662 | } else { |
13f00235 | 1663 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
6282adbf | 1664 | } |
edb27dee | 1665 | err_out: |
c1286ff4 | 1666 | inode_unlock(inode); |
88b88a66 JK |
1667 | mnt_drop_write_file(filp); |
1668 | return ret; | |
1669 | } | |
1670 | ||
02a1335f JK |
1671 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1672 | { | |
1673 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1674 | int ret; |
02a1335f JK |
1675 | |
1676 | if (!inode_owner_or_capable(inode)) | |
1677 | return -EACCES; | |
1678 | ||
13f00235 JK |
1679 | if (!S_ISREG(inode->i_mode)) |
1680 | return -EINVAL; | |
1681 | ||
c1286ff4 JK |
1682 | ret = mnt_want_write_file(filp); |
1683 | if (ret) | |
1684 | return ret; | |
1685 | ||
1686 | inode_lock(inode); | |
1687 | ||
1e84371f | 1688 | if (f2fs_is_volatile_file(inode)) |
c1286ff4 | 1689 | goto out; |
1e84371f | 1690 | |
f4c9c743 CY |
1691 | ret = f2fs_convert_inline_inode(inode); |
1692 | if (ret) | |
c1286ff4 | 1693 | goto out; |
b3d208f9 | 1694 | |
13f00235 JK |
1695 | stat_inc_volatile_write(inode); |
1696 | stat_update_max_volatile_write(inode); | |
1697 | ||
c1286ff4 JK |
1698 | set_inode_flag(inode, FI_VOLATILE_FILE); |
1699 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
1700 | out: | |
1701 | inode_unlock(inode); | |
1702 | mnt_drop_write_file(filp); | |
1703 | return ret; | |
02a1335f JK |
1704 | } |
1705 | ||
1e84371f JK |
1706 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1707 | { | |
1708 | struct inode *inode = file_inode(filp); | |
c1286ff4 | 1709 | int ret; |
1e84371f JK |
1710 | |
1711 | if (!inode_owner_or_capable(inode)) | |
1712 | return -EACCES; | |
1713 | ||
c1286ff4 JK |
1714 | ret = mnt_want_write_file(filp); |
1715 | if (ret) | |
1716 | return ret; | |
1717 | ||
1718 | inode_lock(inode); | |
1719 | ||
1e84371f | 1720 | if (!f2fs_is_volatile_file(inode)) |
c1286ff4 | 1721 | goto out; |
1e84371f | 1722 | |
c1286ff4 JK |
1723 | if (!f2fs_is_first_block_written(inode)) { |
1724 | ret = truncate_partial_data_page(inode, 0, true); | |
1725 | goto out; | |
1726 | } | |
3c6c2beb | 1727 | |
c1286ff4 JK |
1728 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1729 | out: | |
1730 | inode_unlock(inode); | |
1731 | mnt_drop_write_file(filp); | |
1732 | return ret; | |
1e84371f JK |
1733 | } |
1734 | ||
1735 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1736 | { | |
1737 | struct inode *inode = file_inode(filp); | |
1738 | int ret; | |
1739 | ||
1740 | if (!inode_owner_or_capable(inode)) | |
1741 | return -EACCES; | |
1742 | ||
1743 | ret = mnt_want_write_file(filp); | |
1744 | if (ret) | |
1745 | return ret; | |
1746 | ||
c1286ff4 | 1747 | inode_lock(inode); |
1e84371f | 1748 | |
c1286ff4 JK |
1749 | if (f2fs_is_atomic_file(inode)) |
1750 | drop_inmem_pages(inode); | |
1751 | if (f2fs_is_volatile_file(inode)) { | |
1752 | clear_inode_flag(inode, FI_VOLATILE_FILE); | |
13f00235 | 1753 | stat_dec_volatile_write(inode); |
c1286ff4 JK |
1754 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
1755 | } | |
1756 | ||
1757 | inode_unlock(inode); | |
de6a8ec9 | 1758 | |
1e84371f | 1759 | mnt_drop_write_file(filp); |
c1286ff4 | 1760 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1761 | return ret; |
1762 | } | |
1763 | ||
1abff93d JK |
1764 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1765 | { | |
1766 | struct inode *inode = file_inode(filp); | |
1767 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1768 | struct super_block *sb = sbi->sb; | |
1769 | __u32 in; | |
c1286ff4 | 1770 | int ret; |
1abff93d JK |
1771 | |
1772 | if (!capable(CAP_SYS_ADMIN)) | |
1773 | return -EPERM; | |
1774 | ||
1775 | if (get_user(in, (__u32 __user *)arg)) | |
1776 | return -EFAULT; | |
1777 | ||
c1286ff4 JK |
1778 | ret = mnt_want_write_file(filp); |
1779 | if (ret) | |
1780 | return ret; | |
1781 | ||
1abff93d JK |
1782 | switch (in) { |
1783 | case F2FS_GOING_DOWN_FULLSYNC: | |
1784 | sb = freeze_bdev(sb->s_bdev); | |
1785 | if (sb && !IS_ERR(sb)) { | |
c1286ff4 | 1786 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1787 | thaw_bdev(sb->s_bdev, sb); |
1788 | } | |
1789 | break; | |
1790 | case F2FS_GOING_DOWN_METASYNC: | |
1791 | /* do checkpoint only */ | |
1792 | f2fs_sync_fs(sb, 1); | |
c1286ff4 | 1793 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1794 | break; |
1795 | case F2FS_GOING_DOWN_NOSYNC: | |
c1286ff4 | 1796 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1797 | break; |
c912a829 | 1798 | case F2FS_GOING_DOWN_METAFLUSH: |
13f00235 | 1799 | sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); |
c1286ff4 | 1800 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1801 | break; |
1abff93d | 1802 | default: |
c1286ff4 JK |
1803 | ret = -EINVAL; |
1804 | goto out; | |
1abff93d | 1805 | } |
c1286ff4 JK |
1806 | f2fs_update_time(sbi, REQ_TIME); |
1807 | out: | |
1808 | mnt_drop_write_file(filp); | |
1809 | return ret; | |
1abff93d JK |
1810 | } |
1811 | ||
52656e6c JK |
1812 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1813 | { | |
1814 | struct inode *inode = file_inode(filp); | |
1815 | struct super_block *sb = inode->i_sb; | |
1816 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1817 | struct fstrim_range range; | |
1818 | int ret; | |
4b2fecc8 | 1819 | |
52656e6c JK |
1820 | if (!capable(CAP_SYS_ADMIN)) |
1821 | return -EPERM; | |
4b2fecc8 | 1822 | |
52656e6c JK |
1823 | if (!blk_queue_discard(q)) |
1824 | return -EOPNOTSUPP; | |
4b2fecc8 | 1825 | |
52656e6c JK |
1826 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1827 | sizeof(range))) | |
1828 | return -EFAULT; | |
4b2fecc8 | 1829 | |
c1286ff4 JK |
1830 | ret = mnt_want_write_file(filp); |
1831 | if (ret) | |
1832 | return ret; | |
1833 | ||
52656e6c JK |
1834 | range.minlen = max((unsigned int)range.minlen, |
1835 | q->limits.discard_granularity); | |
1836 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
c1286ff4 | 1837 | mnt_drop_write_file(filp); |
52656e6c JK |
1838 | if (ret < 0) |
1839 | return ret; | |
4b2fecc8 | 1840 | |
52656e6c JK |
1841 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1842 | sizeof(range))) | |
1843 | return -EFAULT; | |
c1286ff4 | 1844 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1845 | return 0; |
1846 | } | |
1847 | ||
f424f664 JK |
1848 | static bool uuid_is_nonzero(__u8 u[16]) |
1849 | { | |
1850 | int i; | |
1851 | ||
1852 | for (i = 0; i < 16; i++) | |
1853 | if (u[i]) | |
1854 | return true; | |
1855 | return false; | |
1856 | } | |
1857 | ||
1858 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1859 | { | |
f424f664 JK |
1860 | struct inode *inode = file_inode(filp); |
1861 | ||
c1286ff4 | 1862 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3a19419c | 1863 | |
13f00235 | 1864 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
1865 | } |
1866 | ||
1867 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1868 | { | |
13f00235 | 1869 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
1870 | } |
1871 | ||
1872 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1873 | { | |
1874 | struct inode *inode = file_inode(filp); | |
1875 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1876 | int err; | |
1877 | ||
1878 | if (!f2fs_sb_has_crypto(inode->i_sb)) | |
1879 | return -EOPNOTSUPP; | |
1880 | ||
1881 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1882 | goto got_it; | |
1883 | ||
1884 | err = mnt_want_write_file(filp); | |
1885 | if (err) | |
1886 | return err; | |
1887 | ||
1888 | /* update superblock with uuid */ | |
1889 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1890 | ||
c5bda1c8 | 1891 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1892 | if (err) { |
1893 | /* undo new data */ | |
1894 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
c1286ff4 | 1895 | mnt_drop_write_file(filp); |
f424f664 JK |
1896 | return err; |
1897 | } | |
c1286ff4 | 1898 | mnt_drop_write_file(filp); |
f424f664 JK |
1899 | got_it: |
1900 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1901 | 16)) | |
1902 | return -EFAULT; | |
1903 | return 0; | |
1904 | } | |
1905 | ||
c1c1b583 CY |
1906 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
1907 | { | |
1908 | struct inode *inode = file_inode(filp); | |
1909 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 1910 | __u32 sync; |
c1286ff4 | 1911 | int ret; |
c1c1b583 CY |
1912 | |
1913 | if (!capable(CAP_SYS_ADMIN)) | |
1914 | return -EPERM; | |
1915 | ||
d530d4d8 | 1916 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
1917 | return -EFAULT; |
1918 | ||
d530d4d8 CY |
1919 | if (f2fs_readonly(sbi->sb)) |
1920 | return -EROFS; | |
c1c1b583 | 1921 | |
c1286ff4 JK |
1922 | ret = mnt_want_write_file(filp); |
1923 | if (ret) | |
1924 | return ret; | |
1925 | ||
d530d4d8 | 1926 | if (!sync) { |
c1286ff4 JK |
1927 | if (!mutex_trylock(&sbi->gc_mutex)) { |
1928 | ret = -EBUSY; | |
1929 | goto out; | |
1930 | } | |
d530d4d8 CY |
1931 | } else { |
1932 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
1933 | } |
1934 | ||
13f00235 JK |
1935 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
1936 | out: | |
1937 | mnt_drop_write_file(filp); | |
1938 | return ret; | |
1939 | } | |
1940 | ||
1941 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) | |
1942 | { | |
1943 | struct inode *inode = file_inode(filp); | |
1944 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1945 | struct f2fs_gc_range range; | |
1946 | u64 end; | |
1947 | int ret; | |
1948 | ||
1949 | if (!capable(CAP_SYS_ADMIN)) | |
1950 | return -EPERM; | |
1951 | ||
1952 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, | |
1953 | sizeof(range))) | |
1954 | return -EFAULT; | |
1955 | ||
1956 | if (f2fs_readonly(sbi->sb)) | |
1957 | return -EROFS; | |
1958 | ||
1959 | ret = mnt_want_write_file(filp); | |
1960 | if (ret) | |
1961 | return ret; | |
1962 | ||
1963 | end = range.start + range.len; | |
1964 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) | |
1965 | return -EINVAL; | |
1966 | do_more: | |
1967 | if (!range.sync) { | |
1968 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
1969 | ret = -EBUSY; | |
1970 | goto out; | |
1971 | } | |
1972 | } else { | |
1973 | mutex_lock(&sbi->gc_mutex); | |
1974 | } | |
1975 | ||
1976 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); | |
1977 | range.start += sbi->blocks_per_seg; | |
1978 | if (range.start <= end) | |
1979 | goto do_more; | |
c1286ff4 JK |
1980 | out: |
1981 | mnt_drop_write_file(filp); | |
1982 | return ret; | |
c1c1b583 CY |
1983 | } |
1984 | ||
456b88e4 CY |
1985 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
1986 | { | |
1987 | struct inode *inode = file_inode(filp); | |
1988 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
c1286ff4 | 1989 | int ret; |
456b88e4 CY |
1990 | |
1991 | if (!capable(CAP_SYS_ADMIN)) | |
1992 | return -EPERM; | |
1993 | ||
1994 | if (f2fs_readonly(sbi->sb)) | |
1995 | return -EROFS; | |
1996 | ||
c1286ff4 JK |
1997 | ret = mnt_want_write_file(filp); |
1998 | if (ret) | |
1999 | return ret; | |
456b88e4 | 2000 | |
c1286ff4 | 2001 | ret = f2fs_sync_fs(sbi->sb, 1); |
456b88e4 | 2002 | |
c1286ff4 JK |
2003 | mnt_drop_write_file(filp); |
2004 | return ret; | |
2005 | } | |
2006 | ||
2007 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, | |
2008 | struct file *filp, | |
2009 | struct f2fs_defragment *range) | |
2010 | { | |
2011 | struct inode *inode = file_inode(filp); | |
2012 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; | |
13f00235 | 2013 | struct extent_info ei = {0,0,0}; |
c1286ff4 JK |
2014 | pgoff_t pg_start, pg_end; |
2015 | unsigned int blk_per_seg = sbi->blocks_per_seg; | |
2016 | unsigned int total = 0, sec_num; | |
c1286ff4 JK |
2017 | block_t blk_end = 0; |
2018 | bool fragmented = false; | |
2019 | int err; | |
2020 | ||
2021 | /* if in-place-update policy is enabled, don't waste time here */ | |
13f00235 | 2022 | if (need_inplace_update_policy(inode, NULL)) |
c1286ff4 JK |
2023 | return -EINVAL; |
2024 | ||
2025 | pg_start = range->start >> PAGE_SHIFT; | |
2026 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
2027 | ||
2028 | f2fs_balance_fs(sbi, true); | |
2029 | ||
2030 | inode_lock(inode); | |
2031 | ||
2032 | /* writeback all dirty pages in the range */ | |
2033 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
2034 | range->start + range->len - 1); | |
2035 | if (err) | |
2036 | goto out; | |
2037 | ||
2038 | /* | |
2039 | * lookup mapping info in extent cache, skip defragmenting if physical | |
2040 | * block addresses are continuous. | |
2041 | */ | |
2042 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
2043 | if (ei.fofs + ei.len >= pg_end) | |
2044 | goto out; | |
2045 | } | |
2046 | ||
2047 | map.m_lblk = pg_start; | |
2048 | ||
2049 | /* | |
2050 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
2051 | * physical block addresses are continuous even if there are hole(s) | |
2052 | * in logical blocks. | |
2053 | */ | |
2054 | while (map.m_lblk < pg_end) { | |
2055 | map.m_len = pg_end - map.m_lblk; | |
13f00235 | 2056 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
c1286ff4 JK |
2057 | if (err) |
2058 | goto out; | |
2059 | ||
2060 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
2061 | map.m_lblk++; | |
2062 | continue; | |
2063 | } | |
2064 | ||
2065 | if (blk_end && blk_end != map.m_pblk) { | |
2066 | fragmented = true; | |
2067 | break; | |
2068 | } | |
2069 | blk_end = map.m_pblk + map.m_len; | |
2070 | ||
2071 | map.m_lblk += map.m_len; | |
2072 | } | |
2073 | ||
2074 | if (!fragmented) | |
2075 | goto out; | |
2076 | ||
2077 | map.m_lblk = pg_start; | |
2078 | map.m_len = pg_end - pg_start; | |
2079 | ||
13f00235 | 2080 | sec_num = (map.m_len + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
c1286ff4 JK |
2081 | |
2082 | /* | |
2083 | * make sure there are enough free section for LFS allocation, this can | |
2084 | * avoid defragment running in SSR mode when free section are allocated | |
2085 | * intensively | |
2086 | */ | |
2087 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { | |
2088 | err = -EAGAIN; | |
2089 | goto out; | |
2090 | } | |
2091 | ||
2092 | while (map.m_lblk < pg_end) { | |
2093 | pgoff_t idx; | |
2094 | int cnt = 0; | |
2095 | ||
2096 | do_map: | |
2097 | map.m_len = pg_end - map.m_lblk; | |
13f00235 | 2098 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
c1286ff4 JK |
2099 | if (err) |
2100 | goto clear_out; | |
2101 | ||
2102 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
2103 | map.m_lblk++; | |
2104 | continue; | |
2105 | } | |
2106 | ||
2107 | set_inode_flag(inode, FI_DO_DEFRAG); | |
2108 | ||
2109 | idx = map.m_lblk; | |
2110 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2111 | struct page *page; | |
2112 | ||
2113 | page = get_lock_data_page(inode, idx, true); | |
2114 | if (IS_ERR(page)) { | |
2115 | err = PTR_ERR(page); | |
2116 | goto clear_out; | |
2117 | } | |
2118 | ||
2119 | set_page_dirty(page); | |
2120 | f2fs_put_page(page, 1); | |
2121 | ||
2122 | idx++; | |
2123 | cnt++; | |
2124 | total++; | |
2125 | } | |
2126 | ||
2127 | map.m_lblk = idx; | |
2128 | ||
2129 | if (idx < pg_end && cnt < blk_per_seg) | |
2130 | goto do_map; | |
2131 | ||
2132 | clear_inode_flag(inode, FI_DO_DEFRAG); | |
2133 | ||
2134 | err = filemap_fdatawrite(inode->i_mapping); | |
2135 | if (err) | |
2136 | goto out; | |
2137 | } | |
2138 | clear_out: | |
2139 | clear_inode_flag(inode, FI_DO_DEFRAG); | |
2140 | out: | |
2141 | inode_unlock(inode); | |
2142 | if (!err) | |
2143 | range->len = (u64)total << PAGE_SHIFT; | |
2144 | return err; | |
2145 | } | |
2146 | ||
2147 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2148 | { | |
2149 | struct inode *inode = file_inode(filp); | |
2150 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2151 | struct f2fs_defragment range; | |
2152 | int err; | |
2153 | ||
2154 | if (!capable(CAP_SYS_ADMIN)) | |
2155 | return -EPERM; | |
2156 | ||
13f00235 | 2157 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
c1286ff4 JK |
2158 | return -EINVAL; |
2159 | ||
13f00235 JK |
2160 | if (f2fs_readonly(sbi->sb)) |
2161 | return -EROFS; | |
c1286ff4 JK |
2162 | |
2163 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
13f00235 JK |
2164 | sizeof(range))) |
2165 | return -EFAULT; | |
c1286ff4 JK |
2166 | |
2167 | /* verify alignment of offset & size */ | |
13f00235 JK |
2168 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2169 | return -EINVAL; | |
2170 | ||
2171 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > | |
2172 | sbi->max_file_blocks)) | |
2173 | return -EINVAL; | |
2174 | ||
2175 | err = mnt_want_write_file(filp); | |
2176 | if (err) | |
2177 | return err; | |
c1286ff4 JK |
2178 | |
2179 | err = f2fs_defragment_range(sbi, filp, &range); | |
13f00235 JK |
2180 | mnt_drop_write_file(filp); |
2181 | ||
c1286ff4 JK |
2182 | f2fs_update_time(sbi, REQ_TIME); |
2183 | if (err < 0) | |
13f00235 | 2184 | return err; |
c1286ff4 JK |
2185 | |
2186 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2187 | sizeof(range))) | |
13f00235 JK |
2188 | return -EFAULT; |
2189 | ||
2190 | return 0; | |
c1286ff4 JK |
2191 | } |
2192 | ||
2193 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, | |
2194 | struct file *file_out, loff_t pos_out, size_t len) | |
2195 | { | |
2196 | struct inode *src = file_inode(file_in); | |
2197 | struct inode *dst = file_inode(file_out); | |
2198 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2199 | size_t olen = len, dst_max_i_size = 0; | |
2200 | size_t dst_osize; | |
2201 | int ret; | |
2202 | ||
2203 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2204 | src->i_sb != dst->i_sb) | |
2205 | return -EXDEV; | |
2206 | ||
2207 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2208 | return -EROFS; | |
2209 | ||
2210 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) | |
2211 | return -EINVAL; | |
2212 | ||
2213 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2214 | return -EOPNOTSUPP; | |
2215 | ||
2216 | if (src == dst) { | |
2217 | if (pos_in == pos_out) | |
2218 | return 0; | |
2219 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2220 | return -EINVAL; | |
2221 | } | |
2222 | ||
2223 | inode_lock(src); | |
2224 | if (src != dst) { | |
2225 | if (!inode_trylock(dst)) { | |
2226 | ret = -EBUSY; | |
2227 | goto out; | |
2228 | } | |
2229 | } | |
2230 | ||
2231 | ret = -EINVAL; | |
2232 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2233 | goto out_unlock; | |
2234 | if (len == 0) | |
2235 | olen = len = src->i_size - pos_in; | |
2236 | if (pos_in + len == src->i_size) | |
2237 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2238 | if (len == 0) { | |
2239 | ret = 0; | |
2240 | goto out_unlock; | |
2241 | } | |
2242 | ||
2243 | dst_osize = dst->i_size; | |
2244 | if (pos_out + olen > dst->i_size) | |
2245 | dst_max_i_size = pos_out + olen; | |
2246 | ||
2247 | /* verify the end result is block aligned */ | |
2248 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2249 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2250 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2251 | goto out_unlock; | |
2252 | ||
2253 | ret = f2fs_convert_inline_inode(src); | |
2254 | if (ret) | |
2255 | goto out_unlock; | |
2256 | ||
2257 | ret = f2fs_convert_inline_inode(dst); | |
2258 | if (ret) | |
2259 | goto out_unlock; | |
2260 | ||
2261 | /* write out all dirty pages from offset */ | |
2262 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2263 | pos_in, pos_in + len); | |
2264 | if (ret) | |
2265 | goto out_unlock; | |
2266 | ||
2267 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2268 | pos_out, pos_out + len); | |
2269 | if (ret) | |
2270 | goto out_unlock; | |
2271 | ||
2272 | f2fs_balance_fs(sbi, true); | |
2273 | f2fs_lock_op(sbi); | |
2274 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, | |
2275 | pos_out >> F2FS_BLKSIZE_BITS, | |
2276 | len >> F2FS_BLKSIZE_BITS, false); | |
2277 | ||
2278 | if (!ret) { | |
2279 | if (dst_max_i_size) | |
2280 | f2fs_i_size_write(dst, dst_max_i_size); | |
2281 | else if (dst_osize != dst->i_size) | |
2282 | f2fs_i_size_write(dst, dst_osize); | |
2283 | } | |
2284 | f2fs_unlock_op(sbi); | |
2285 | out_unlock: | |
2286 | if (src != dst) | |
2287 | inode_unlock(dst); | |
2288 | out: | |
2289 | inode_unlock(src); | |
2290 | return ret; | |
2291 | } | |
2292 | ||
2293 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2294 | { | |
2295 | struct f2fs_move_range range; | |
2296 | struct fd dst; | |
2297 | int err; | |
2298 | ||
2299 | if (!(filp->f_mode & FMODE_READ) || | |
2300 | !(filp->f_mode & FMODE_WRITE)) | |
2301 | return -EBADF; | |
2302 | ||
2303 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2304 | sizeof(range))) | |
2305 | return -EFAULT; | |
2306 | ||
2307 | dst = fdget(range.dst_fd); | |
2308 | if (!dst.file) | |
2309 | return -EBADF; | |
2310 | ||
2311 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2312 | err = -EBADF; | |
2313 | goto err_out; | |
2314 | } | |
2315 | ||
2316 | err = mnt_want_write_file(filp); | |
2317 | if (err) | |
2318 | goto err_out; | |
2319 | ||
2320 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2321 | range.pos_out, range.len); | |
2322 | ||
2323 | mnt_drop_write_file(filp); | |
13f00235 JK |
2324 | if (err) |
2325 | goto err_out; | |
c1286ff4 JK |
2326 | |
2327 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2328 | &range, sizeof(range))) | |
2329 | err = -EFAULT; | |
2330 | err_out: | |
2331 | fdput(dst); | |
2332 | return err; | |
456b88e4 CY |
2333 | } |
2334 | ||
13f00235 JK |
2335 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2336 | { | |
2337 | struct inode *inode = file_inode(filp); | |
2338 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2339 | struct sit_info *sm = SIT_I(sbi); | |
2340 | unsigned int start_segno = 0, end_segno = 0; | |
2341 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2342 | struct f2fs_flush_device range; | |
2343 | int ret; | |
2344 | ||
2345 | if (!capable(CAP_SYS_ADMIN)) | |
2346 | return -EPERM; | |
2347 | ||
2348 | if (f2fs_readonly(sbi->sb)) | |
2349 | return -EROFS; | |
2350 | ||
2351 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, | |
2352 | sizeof(range))) | |
2353 | return -EFAULT; | |
2354 | ||
2355 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || | |
2356 | sbi->segs_per_sec != 1) { | |
2357 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2358 | "Can't flush %u in %d for segs_per_sec %u != 1\n", | |
2359 | range.dev_num, sbi->s_ndevs, | |
2360 | sbi->segs_per_sec); | |
2361 | return -EINVAL; | |
2362 | } | |
2363 | ||
2364 | ret = mnt_want_write_file(filp); | |
2365 | if (ret) | |
2366 | return ret; | |
2367 | ||
2368 | if (range.dev_num != 0) | |
2369 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2370 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2371 | ||
2372 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2373 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2374 | start_segno = dev_start_segno; | |
2375 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2376 | ||
2377 | while (start_segno < end_segno) { | |
2378 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2379 | ret = -EBUSY; | |
2380 | goto out; | |
2381 | } | |
2382 | sm->last_victim[GC_CB] = end_segno + 1; | |
2383 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2384 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2385 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2386 | if (ret == -EAGAIN) | |
2387 | ret = 0; | |
2388 | else if (ret < 0) | |
2389 | break; | |
2390 | start_segno++; | |
2391 | } | |
2392 | out: | |
2393 | mnt_drop_write_file(filp); | |
2394 | return ret; | |
2395 | } | |
2396 | ||
2397 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) | |
2398 | { | |
2399 | struct inode *inode = file_inode(filp); | |
2400 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); | |
2401 | ||
2402 | /* Must validate to set it with SQLite behavior in Android. */ | |
2403 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; | |
2404 | ||
2405 | return put_user(sb_feature, (u32 __user *)arg); | |
2406 | } | |
2407 | ||
52656e6c JK |
2408 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2409 | { | |
2410 | switch (cmd) { | |
2411 | case F2FS_IOC_GETFLAGS: | |
2412 | return f2fs_ioc_getflags(filp, arg); | |
2413 | case F2FS_IOC_SETFLAGS: | |
2414 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2415 | case F2FS_IOC_GETVERSION: |
2416 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2417 | case F2FS_IOC_START_ATOMIC_WRITE: |
2418 | return f2fs_ioc_start_atomic_write(filp); | |
2419 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2420 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2421 | case F2FS_IOC_START_VOLATILE_WRITE: |
2422 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2423 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2424 | return f2fs_ioc_release_volatile_write(filp); | |
2425 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2426 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2427 | case F2FS_IOC_SHUTDOWN: |
2428 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2429 | case FITRIM: |
2430 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2431 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2432 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2433 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2434 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2435 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2436 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2437 | case F2FS_IOC_GARBAGE_COLLECT: |
2438 | return f2fs_ioc_gc(filp, arg); | |
13f00235 JK |
2439 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
2440 | return f2fs_ioc_gc_range(filp, arg); | |
456b88e4 CY |
2441 | case F2FS_IOC_WRITE_CHECKPOINT: |
2442 | return f2fs_ioc_write_checkpoint(filp, arg); | |
c1286ff4 JK |
2443 | case F2FS_IOC_DEFRAGMENT: |
2444 | return f2fs_ioc_defragment(filp, arg); | |
2445 | case F2FS_IOC_MOVE_RANGE: | |
2446 | return f2fs_ioc_move_range(filp, arg); | |
13f00235 JK |
2447 | case F2FS_IOC_FLUSH_DEVICE: |
2448 | return f2fs_ioc_flush_device(filp, arg); | |
2449 | case F2FS_IOC_GET_FEATURES: | |
2450 | return f2fs_ioc_get_features(filp, arg); | |
fbfa2cc5 JK |
2451 | default: |
2452 | return -ENOTTY; | |
2453 | } | |
2454 | } | |
2455 | ||
fcc85a4d JK |
2456 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2457 | { | |
c1286ff4 JK |
2458 | struct file *file = iocb->ki_filp; |
2459 | struct inode *inode = file_inode(file); | |
2460 | struct blk_plug plug; | |
2461 | ssize_t ret; | |
fcc85a4d | 2462 | |
c1286ff4 JK |
2463 | inode_lock(inode); |
2464 | ret = generic_write_checks(iocb, from); | |
2465 | if (ret > 0) { | |
13f00235 | 2466 | int err; |
bd8e4154 | 2467 | |
13f00235 JK |
2468 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
2469 | set_inode_flag(inode, FI_NO_PREALLOC); | |
2470 | ||
2471 | err = f2fs_preallocate_blocks(iocb, from); | |
bd8e4154 JK |
2472 | if (err) { |
2473 | inode_unlock(inode); | |
2474 | return err; | |
c1286ff4 | 2475 | } |
bd8e4154 JK |
2476 | blk_start_plug(&plug); |
2477 | ret = __generic_file_write_iter(iocb, from); | |
2478 | blk_finish_plug(&plug); | |
13f00235 JK |
2479 | clear_inode_flag(inode, FI_NO_PREALLOC); |
2480 | ||
2481 | if (ret > 0) | |
2482 | f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); | |
c1286ff4 JK |
2483 | } |
2484 | inode_unlock(inode); | |
2485 | ||
2486 | if (ret > 0) { | |
2487 | ssize_t err; | |
2488 | ||
2489 | err = generic_write_sync(file, iocb->ki_pos - ret, ret); | |
2490 | if (err < 0) | |
2491 | ret = err; | |
2492 | } | |
2493 | return ret; | |
fcc85a4d JK |
2494 | } |
2495 | ||
e9750824 NJ |
2496 | #ifdef CONFIG_COMPAT |
2497 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2498 | { | |
2499 | switch (cmd) { | |
2500 | case F2FS_IOC32_GETFLAGS: | |
2501 | cmd = F2FS_IOC_GETFLAGS; | |
2502 | break; | |
2503 | case F2FS_IOC32_SETFLAGS: | |
2504 | cmd = F2FS_IOC_SETFLAGS; | |
2505 | break; | |
c1286ff4 JK |
2506 | case F2FS_IOC32_GETVERSION: |
2507 | cmd = F2FS_IOC_GETVERSION; | |
2508 | break; | |
2509 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2510 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2511 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2512 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2513 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2514 | case F2FS_IOC_SHUTDOWN: | |
2515 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2516 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2517 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2518 | case F2FS_IOC_GARBAGE_COLLECT: | |
13f00235 | 2519 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
c1286ff4 JK |
2520 | case F2FS_IOC_WRITE_CHECKPOINT: |
2521 | case F2FS_IOC_DEFRAGMENT: | |
c1286ff4 | 2522 | case F2FS_IOC_MOVE_RANGE: |
13f00235 JK |
2523 | case F2FS_IOC_FLUSH_DEVICE: |
2524 | case F2FS_IOC_GET_FEATURES: | |
c1286ff4 | 2525 | break; |
e9750824 NJ |
2526 | default: |
2527 | return -ENOIOCTLCMD; | |
2528 | } | |
2529 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
2530 | } | |
2531 | #endif | |
2532 | ||
fbfa2cc5 | 2533 | const struct file_operations f2fs_file_operations = { |
267378d4 | 2534 | .llseek = f2fs_llseek, |
aad4f8bb | 2535 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
2536 | .write_iter = f2fs_file_write_iter, |
2537 | .open = f2fs_file_open, | |
12662234 | 2538 | .release = f2fs_release_file, |
fbfa2cc5 | 2539 | .mmap = f2fs_file_mmap, |
13f00235 | 2540 | .flush = f2fs_file_flush, |
fbfa2cc5 JK |
2541 | .fsync = f2fs_sync_file, |
2542 | .fallocate = f2fs_fallocate, | |
2543 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
2544 | #ifdef CONFIG_COMPAT |
2545 | .compat_ioctl = f2fs_compat_ioctl, | |
2546 | #endif | |
fbfa2cc5 | 2547 | .splice_read = generic_file_splice_read, |
8d020765 | 2548 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 2549 | }; |