Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
fbfa2cc5 JK |
2 | * fs/f2fs/file.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/stat.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/writeback.h> | |
ae51fb31 | 16 | #include <linux/blkdev.h> |
fbfa2cc5 JK |
17 | #include <linux/falloc.h> |
18 | #include <linux/types.h> | |
e9750824 | 19 | #include <linux/compat.h> |
fbfa2cc5 JK |
20 | #include <linux/uaccess.h> |
21 | #include <linux/mount.h> | |
7f7670fe | 22 | #include <linux/pagevec.h> |
dc91de78 | 23 | #include <linux/uio.h> |
8da4b8c4 | 24 | #include <linux/uuid.h> |
4dd6f977 | 25 | #include <linux/file.h> |
fbfa2cc5 JK |
26 | |
27 | #include "f2fs.h" | |
28 | #include "node.h" | |
29 | #include "segment.h" | |
30 | #include "xattr.h" | |
31 | #include "acl.h" | |
c1c1b583 | 32 | #include "gc.h" |
db9f7c1a | 33 | #include "trace.h" |
a2a4a7e4 | 34 | #include <trace/events/f2fs.h> |
fbfa2cc5 | 35 | |
5a3a2d83 QS |
36 | static int f2fs_filemap_fault(struct vm_fault *vmf) |
37 | { | |
38 | struct inode *inode = file_inode(vmf->vma->vm_file); | |
39 | int err; | |
40 | ||
41 | down_read(&F2FS_I(inode)->i_mmap_sem); | |
42 | err = filemap_fault(vmf); | |
43 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
44 | ||
45 | return err; | |
46 | } | |
47 | ||
11bac800 | 48 | static int f2fs_vm_page_mkwrite(struct vm_fault *vmf) |
fbfa2cc5 JK |
49 | { |
50 | struct page *page = vmf->page; | |
11bac800 | 51 | struct inode *inode = file_inode(vmf->vma->vm_file); |
4081363f | 52 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 53 | struct dnode_of_data dn; |
e479556b | 54 | int err; |
fbfa2cc5 | 55 | |
1f227a3e JK |
56 | if (unlikely(f2fs_cp_error(sbi))) { |
57 | err = -EIO; | |
58 | goto err; | |
59 | } | |
60 | ||
fbfa2cc5 | 61 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
62 | |
63 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 64 | |
fbfa2cc5 | 65 | /* block allocation */ |
e479556b | 66 | f2fs_lock_op(sbi); |
b3d208f9 | 67 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 68 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
69 | if (err) { |
70 | f2fs_unlock_op(sbi); | |
b600965c | 71 | goto out; |
9ba69cf9 JK |
72 | } |
73 | f2fs_put_dnode(&dn); | |
74 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 75 | |
2c4db1a6 | 76 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 77 | |
11bac800 | 78 | file_update_time(vmf->vma->vm_file); |
5a3a2d83 | 79 | down_read(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 | 80 | lock_page(page); |
6bacf52f | 81 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 82 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 83 | !PageUptodate(page))) { |
fbfa2cc5 JK |
84 | unlock_page(page); |
85 | err = -EFAULT; | |
5a3a2d83 | 86 | goto out_sem; |
fbfa2cc5 JK |
87 | } |
88 | ||
89 | /* | |
90 | * check to see if the page is mapped already (no holes) | |
91 | */ | |
92 | if (PageMappedToDisk(page)) | |
9851e6e1 | 93 | goto mapped; |
fbfa2cc5 JK |
94 | |
95 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 96 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 97 | i_size_read(inode)) { |
fbfa2cc5 | 98 | unsigned offset; |
09cbfeaf KS |
99 | offset = i_size_read(inode) & ~PAGE_MASK; |
100 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
101 | } |
102 | set_page_dirty(page); | |
237c0790 JK |
103 | if (!PageUptodate(page)) |
104 | SetPageUptodate(page); | |
fbfa2cc5 | 105 | |
b0af6d49 CY |
106 | f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE); |
107 | ||
e943a10d | 108 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
109 | mapped: |
110 | /* fill the page */ | |
fec1d657 | 111 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd CY |
112 | |
113 | /* wait for GCed encrypted page writeback */ | |
1958593e | 114 | if (f2fs_encrypted_file(inode)) |
d4c759ee | 115 | f2fs_wait_on_block_writeback(sbi, dn.data_blkaddr); |
08b39fbd | 116 | |
5a3a2d83 QS |
117 | out_sem: |
118 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
fbfa2cc5 JK |
119 | out: |
120 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 121 | f2fs_update_time(sbi, REQ_TIME); |
1f227a3e | 122 | err: |
fbfa2cc5 JK |
123 | return block_page_mkwrite_return(err); |
124 | } | |
125 | ||
126 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
5a3a2d83 | 127 | .fault = f2fs_filemap_fault, |
f1820361 | 128 | .map_pages = filemap_map_pages, |
692bb55d | 129 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
130 | }; |
131 | ||
354a3399 JK |
132 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
133 | { | |
134 | struct dentry *dentry; | |
135 | ||
136 | inode = igrab(inode); | |
137 | dentry = d_find_any_alias(inode); | |
138 | iput(inode); | |
139 | if (!dentry) | |
140 | return 0; | |
141 | ||
f0947e5c JK |
142 | *pino = parent_ino(dentry); |
143 | dput(dentry); | |
354a3399 JK |
144 | return 1; |
145 | } | |
146 | ||
a5fd5050 | 147 | static inline enum cp_reason_type need_do_checkpoint(struct inode *inode) |
9d1589ef | 148 | { |
4081363f | 149 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a5fd5050 | 150 | enum cp_reason_type cp_reason = CP_NO_NEEDED; |
9d1589ef | 151 | |
a5fd5050 CY |
152 | if (!S_ISREG(inode->i_mode)) |
153 | cp_reason = CP_NON_REGULAR; | |
154 | else if (inode->i_nlink != 1) | |
155 | cp_reason = CP_HARDLINK; | |
bbf156f7 | 156 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
a5fd5050 | 157 | cp_reason = CP_SB_NEED_CP; |
9d1589ef | 158 | else if (file_wrong_pino(inode)) |
a5fd5050 | 159 | cp_reason = CP_WRONG_PINO; |
9d1589ef | 160 | else if (!space_for_roll_forward(sbi)) |
a5fd5050 | 161 | cp_reason = CP_NO_SPC_ROLL; |
9d1589ef | 162 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
a5fd5050 | 163 | cp_reason = CP_NODE_NEED_CP; |
d5053a34 | 164 | else if (test_opt(sbi, FASTBOOT)) |
a5fd5050 | 165 | cp_reason = CP_FASTBOOT_MODE; |
63189b78 | 166 | else if (F2FS_OPTION(sbi).active_logs == 2) |
a5fd5050 | 167 | cp_reason = CP_SPEC_LOG_NUM; |
63189b78 | 168 | else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT && |
93cf93f1 | 169 | need_dentry_mark(sbi, inode->i_ino) && |
0a007b97 JK |
170 | exist_written_data(sbi, F2FS_I(inode)->i_pino, TRANS_DIR_INO)) |
171 | cp_reason = CP_RECOVER_DIR; | |
9d1589ef | 172 | |
a5fd5050 | 173 | return cp_reason; |
9d1589ef CY |
174 | } |
175 | ||
9c7bb702 CL |
176 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
177 | { | |
178 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
179 | bool ret = false; | |
180 | /* But we need to avoid that there are some inode updates */ | |
181 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
182 | ret = true; | |
183 | f2fs_put_page(i, 0); | |
184 | return ret; | |
185 | } | |
186 | ||
51455b19 CL |
187 | static void try_to_fix_pino(struct inode *inode) |
188 | { | |
189 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
190 | nid_t pino; | |
191 | ||
192 | down_write(&fi->i_sem); | |
51455b19 CL |
193 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
194 | get_parent_ino(inode, &pino)) { | |
205b9822 | 195 | f2fs_i_pino_write(inode, pino); |
51455b19 | 196 | file_got_pino(inode); |
51455b19 | 197 | } |
ee6d182f | 198 | up_write(&fi->i_sem); |
51455b19 CL |
199 | } |
200 | ||
608514de JK |
201 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
202 | int datasync, bool atomic) | |
fbfa2cc5 JK |
203 | { |
204 | struct inode *inode = file->f_mapping->host; | |
4081363f | 205 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 206 | nid_t ino = inode->i_ino; |
fbfa2cc5 | 207 | int ret = 0; |
a5fd5050 | 208 | enum cp_reason_type cp_reason = 0; |
fbfa2cc5 | 209 | struct writeback_control wbc = { |
c81bf1c8 | 210 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
211 | .nr_to_write = LONG_MAX, |
212 | .for_reclaim = 0, | |
213 | }; | |
214 | ||
6bacf52f | 215 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
216 | return 0; |
217 | ||
a2a4a7e4 | 218 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
219 | |
220 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 221 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 222 | set_inode_flag(inode, FI_NEED_IPU); |
3b49c9a1 | 223 | ret = file_write_and_wait_range(file, start, end); |
91942321 | 224 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 225 | |
a2a4a7e4 | 226 | if (ret) { |
a5fd5050 | 227 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
fbfa2cc5 | 228 | return ret; |
a2a4a7e4 | 229 | } |
fbfa2cc5 | 230 | |
9c7bb702 | 231 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 232 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 233 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
234 | goto go_write; |
235 | } | |
236 | ||
6d99ba41 JK |
237 | /* |
238 | * if there is no written data, don't waste time to write recovery info. | |
239 | */ | |
91942321 | 240 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
2403c155 | 241 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 242 | |
9c7bb702 CL |
243 | /* it may call write_inode just prior to fsync */ |
244 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 245 | goto go_write; |
19c9c466 | 246 | |
91942321 | 247 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
2403c155 | 248 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
249 | goto flush_out; |
250 | goto out; | |
251 | } | |
19c9c466 | 252 | go_write: |
e5d2385e JK |
253 | /* |
254 | * Both of fdatasync() and fsync() are able to be recovered from | |
255 | * sudden-power-off. | |
256 | */ | |
91942321 | 257 | down_read(&F2FS_I(inode)->i_sem); |
a5fd5050 | 258 | cp_reason = need_do_checkpoint(inode); |
91942321 | 259 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 260 | |
a5fd5050 | 261 | if (cp_reason) { |
fbfa2cc5 JK |
262 | /* all the dirty node pages should be flushed for POR */ |
263 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 264 | |
51455b19 CL |
265 | /* |
266 | * We've secured consistency through sync_fs. Following pino | |
267 | * will be used only for fsynced inodes after checkpoint. | |
268 | */ | |
269 | try_to_fix_pino(inode); | |
91942321 JK |
270 | clear_inode_flag(inode, FI_APPEND_WRITE); |
271 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
272 | goto out; |
273 | } | |
88bd02c9 | 274 | sync_nodes: |
26de9b11 | 275 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
c267ec15 JK |
276 | if (ret) |
277 | goto out; | |
51455b19 | 278 | |
871f599f | 279 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
280 | if (unlikely(f2fs_cp_error(sbi))) { |
281 | ret = -EIO; | |
871f599f | 282 | goto out; |
6d5a1495 | 283 | } |
871f599f | 284 | |
51455b19 | 285 | if (need_inode_block_update(sbi, ino)) { |
7c45729a | 286 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
287 | f2fs_write_inode(inode, NULL); |
288 | goto sync_nodes; | |
fbfa2cc5 | 289 | } |
51455b19 | 290 | |
b6a245eb JK |
291 | /* |
292 | * If it's atomic_write, it's just fine to keep write ordering. So | |
293 | * here we don't need to wait for node write completion, since we use | |
294 | * node chain which serializes node blocks. If one of node writes are | |
295 | * reordered, we can see simply broken chain, resulting in stopping | |
296 | * roll-forward recovery. It means we'll recover all or none node blocks | |
297 | * given fsync mark. | |
298 | */ | |
299 | if (!atomic) { | |
300 | ret = wait_on_node_pages_writeback(sbi, ino); | |
301 | if (ret) | |
302 | goto out; | |
303 | } | |
51455b19 CL |
304 | |
305 | /* once recovery info is written, don't need to tack this */ | |
a49324f1 | 306 | remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 307 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 308 | flush_out: |
e7c75ab0 | 309 | if (!atomic) |
39d787be | 310 | ret = f2fs_issue_flush(sbi, inode->i_ino); |
3f06252f CY |
311 | if (!ret) { |
312 | remove_ino_entry(sbi, ino, UPDATE_INO); | |
313 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
39d787be | 314 | remove_ino_entry(sbi, ino, FLUSH_INO); |
3f06252f | 315 | } |
d0239e1b | 316 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 317 | out: |
a5fd5050 | 318 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
05ca3632 | 319 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
320 | return ret; |
321 | } | |
322 | ||
608514de JK |
323 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
324 | { | |
1f227a3e JK |
325 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file))))) |
326 | return -EIO; | |
608514de JK |
327 | return f2fs_do_sync_file(file, start, end, datasync, false); |
328 | } | |
329 | ||
7f7670fe JK |
330 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
331 | pgoff_t pgofs, int whence) | |
332 | { | |
8faab642 | 333 | struct page *page; |
7f7670fe JK |
334 | int nr_pages; |
335 | ||
336 | if (whence != SEEK_DATA) | |
337 | return 0; | |
338 | ||
339 | /* find first dirty page index */ | |
8faab642 JK |
340 | nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY, |
341 | 1, &page); | |
342 | if (!nr_pages) | |
343 | return ULONG_MAX; | |
344 | pgofs = page->index; | |
345 | put_page(page); | |
7f7670fe JK |
346 | return pgofs; |
347 | } | |
348 | ||
349 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
350 | int whence) | |
351 | { | |
352 | switch (whence) { | |
353 | case SEEK_DATA: | |
354 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
355 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
356 | return true; | |
357 | break; | |
358 | case SEEK_HOLE: | |
359 | if (blkaddr == NULL_ADDR) | |
360 | return true; | |
361 | break; | |
362 | } | |
363 | return false; | |
364 | } | |
365 | ||
267378d4 CY |
366 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
367 | { | |
368 | struct inode *inode = file->f_mapping->host; | |
369 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
370 | struct dnode_of_data dn; | |
7f7670fe JK |
371 | pgoff_t pgofs, end_offset, dirty; |
372 | loff_t data_ofs = offset; | |
373 | loff_t isize; | |
267378d4 CY |
374 | int err = 0; |
375 | ||
5955102c | 376 | inode_lock(inode); |
267378d4 CY |
377 | |
378 | isize = i_size_read(inode); | |
379 | if (offset >= isize) | |
380 | goto fail; | |
381 | ||
382 | /* handle inline data case */ | |
622f28ae | 383 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
384 | if (whence == SEEK_HOLE) |
385 | data_ofs = isize; | |
386 | goto found; | |
387 | } | |
388 | ||
09cbfeaf | 389 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 390 | |
7f7670fe JK |
391 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
392 | ||
09cbfeaf | 393 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 394 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ac6f1999 | 395 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
396 | if (err && err != -ENOENT) { |
397 | goto fail; | |
398 | } else if (err == -ENOENT) { | |
e1c42045 | 399 | /* direct node does not exists */ |
267378d4 | 400 | if (whence == SEEK_DATA) { |
3cf45747 | 401 | pgofs = get_next_page_offset(&dn, pgofs); |
267378d4 CY |
402 | continue; |
403 | } else { | |
404 | goto found; | |
405 | } | |
406 | } | |
407 | ||
81ca7350 | 408 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
409 | |
410 | /* find data/hole in dnode block */ | |
411 | for (; dn.ofs_in_node < end_offset; | |
412 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 413 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 414 | block_t blkaddr; |
7a2af766 CY |
415 | blkaddr = datablock_addr(dn.inode, |
416 | dn.node_page, dn.ofs_in_node); | |
267378d4 | 417 | |
7f7670fe | 418 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
419 | f2fs_put_dnode(&dn); |
420 | goto found; | |
421 | } | |
422 | } | |
423 | f2fs_put_dnode(&dn); | |
424 | } | |
425 | ||
426 | if (whence == SEEK_DATA) | |
427 | goto fail; | |
267378d4 | 428 | found: |
fe369bc8 JK |
429 | if (whence == SEEK_HOLE && data_ofs > isize) |
430 | data_ofs = isize; | |
5955102c | 431 | inode_unlock(inode); |
267378d4 CY |
432 | return vfs_setpos(file, data_ofs, maxbytes); |
433 | fail: | |
5955102c | 434 | inode_unlock(inode); |
267378d4 CY |
435 | return -ENXIO; |
436 | } | |
437 | ||
438 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
439 | { | |
440 | struct inode *inode = file->f_mapping->host; | |
441 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
442 | ||
443 | switch (whence) { | |
444 | case SEEK_SET: | |
445 | case SEEK_CUR: | |
446 | case SEEK_END: | |
447 | return generic_file_llseek_size(file, offset, whence, | |
448 | maxbytes, i_size_read(inode)); | |
449 | case SEEK_DATA: | |
450 | case SEEK_HOLE: | |
0b4c5afd JK |
451 | if (offset < 0) |
452 | return -ENXIO; | |
267378d4 CY |
453 | return f2fs_seek_block(file, offset, whence); |
454 | } | |
455 | ||
456 | return -EINVAL; | |
457 | } | |
458 | ||
fbfa2cc5 JK |
459 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
460 | { | |
b3d208f9 | 461 | struct inode *inode = file_inode(file); |
b9d777b8 | 462 | int err; |
b3d208f9 | 463 | |
1f227a3e JK |
464 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
465 | return -EIO; | |
466 | ||
b3d208f9 | 467 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
468 | err = f2fs_convert_inline_inode(inode); |
469 | if (err) | |
470 | return err; | |
b3d208f9 | 471 | |
fbfa2cc5 JK |
472 | file_accessed(file); |
473 | vma->vm_ops = &f2fs_file_vm_ops; | |
474 | return 0; | |
475 | } | |
476 | ||
fcc85a4d JK |
477 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
478 | { | |
2e168c82 | 479 | int err = fscrypt_file_open(inode, filp); |
fcc85a4d | 480 | |
2e168c82 EB |
481 | if (err) |
482 | return err; | |
b91050a8 HL |
483 | |
484 | filp->f_mode |= FMODE_NOWAIT; | |
485 | ||
0abd675e | 486 | return dquot_file_open(inode, filp); |
fcc85a4d JK |
487 | } |
488 | ||
f652e9d9 | 489 | void truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 490 | { |
4081363f | 491 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 492 | struct f2fs_node *raw_node; |
19b2c30d | 493 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 | 494 | __le32 *addr; |
7a2af766 CY |
495 | int base = 0; |
496 | ||
497 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
498 | base = get_extra_isize(dn->inode); | |
fbfa2cc5 | 499 | |
45590710 | 500 | raw_node = F2FS_NODE(dn->node_page); |
7a2af766 | 501 | addr = blkaddr_in_node(raw_node) + base + ofs; |
fbfa2cc5 | 502 | |
6c311ec6 | 503 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
504 | block_t blkaddr = le32_to_cpu(*addr); |
505 | if (blkaddr == NULL_ADDR) | |
506 | continue; | |
507 | ||
e1509cf2 | 508 | dn->data_blkaddr = NULL_ADDR; |
216a620a | 509 | set_data_blkaddr(dn); |
fbfa2cc5 | 510 | invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 511 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 512 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
513 | nr_free++; |
514 | } | |
19b2c30d | 515 | |
fbfa2cc5 | 516 | if (nr_free) { |
19b2c30d CY |
517 | pgoff_t fofs; |
518 | /* | |
519 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
520 | * we will invalidate all blkaddr in the whole range. | |
521 | */ | |
522 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), | |
81ca7350 | 523 | dn->inode) + ofs; |
19b2c30d | 524 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 525 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
526 | } |
527 | dn->ofs_in_node = ofs; | |
51dd6249 | 528 | |
d0239e1b | 529 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
530 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
531 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
532 | } |
533 | ||
534 | void truncate_data_blocks(struct dnode_of_data *dn) | |
535 | { | |
536 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
537 | } | |
538 | ||
0bfcfcca | 539 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 540 | bool cache_only) |
fbfa2cc5 | 541 | { |
09cbfeaf KS |
542 | unsigned offset = from & (PAGE_SIZE - 1); |
543 | pgoff_t index = from >> PAGE_SHIFT; | |
43f3eae1 | 544 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
545 | struct page *page; |
546 | ||
43f3eae1 | 547 | if (!offset && !cache_only) |
b3d208f9 | 548 | return 0; |
fbfa2cc5 | 549 | |
43f3eae1 | 550 | if (cache_only) { |
34b5d5c2 | 551 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
552 | if (page && PageUptodate(page)) |
553 | goto truncate_out; | |
554 | f2fs_put_page(page, 1); | |
b3d208f9 | 555 | return 0; |
43f3eae1 | 556 | } |
fbfa2cc5 | 557 | |
a56c7c6f | 558 | page = get_lock_data_page(inode, index, true); |
43f3eae1 | 559 | if (IS_ERR(page)) |
a78aaa2c | 560 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 561 | truncate_out: |
fec1d657 | 562 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 563 | zero_user(page, offset, PAGE_SIZE - offset); |
a9bcf9bc JK |
564 | |
565 | /* An encrypted inode should have a key and truncate the last page. */ | |
566 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); | |
567 | if (!cache_only) | |
0bfcfcca | 568 | set_page_dirty(page); |
fbfa2cc5 | 569 | f2fs_put_page(page, 1); |
b3d208f9 | 570 | return 0; |
fbfa2cc5 JK |
571 | } |
572 | ||
764aa3e9 | 573 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 574 | { |
4081363f | 575 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
576 | struct dnode_of_data dn; |
577 | pgoff_t free_from; | |
9ffe0fb5 | 578 | int count = 0, err = 0; |
b3d208f9 | 579 | struct page *ipage; |
0bfcfcca | 580 | bool truncate_page = false; |
fbfa2cc5 | 581 | |
51dd6249 NJ |
582 | trace_f2fs_truncate_blocks_enter(inode, from); |
583 | ||
df033caf | 584 | free_from = (pgoff_t)F2FS_BLK_ALIGN(from); |
fbfa2cc5 | 585 | |
09210c97 CY |
586 | if (free_from >= sbi->max_file_blocks) |
587 | goto free_partial; | |
588 | ||
764aa3e9 JK |
589 | if (lock) |
590 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 591 | |
b3d208f9 JK |
592 | ipage = get_node_page(sbi, inode->i_ino); |
593 | if (IS_ERR(ipage)) { | |
594 | err = PTR_ERR(ipage); | |
595 | goto out; | |
596 | } | |
597 | ||
598 | if (f2fs_has_inline_data(inode)) { | |
bd4667cb | 599 | truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 600 | f2fs_put_page(ipage, 1); |
0bfcfcca | 601 | truncate_page = true; |
b3d208f9 JK |
602 | goto out; |
603 | } | |
604 | ||
605 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
79344efb | 606 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
607 | if (err) { |
608 | if (err == -ENOENT) | |
609 | goto free_next; | |
b3d208f9 | 610 | goto out; |
1ce86bf6 JK |
611 | } |
612 | ||
81ca7350 | 613 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
614 | |
615 | count -= dn.ofs_in_node; | |
9850cf4a | 616 | f2fs_bug_on(sbi, count < 0); |
39936837 | 617 | |
fbfa2cc5 JK |
618 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
619 | truncate_data_blocks_range(&dn, count); | |
620 | free_from += count; | |
621 | } | |
622 | ||
623 | f2fs_put_dnode(&dn); | |
624 | free_next: | |
625 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
626 | out: |
627 | if (lock) | |
628 | f2fs_unlock_op(sbi); | |
09210c97 | 629 | free_partial: |
b3d208f9 JK |
630 | /* lastly zero out the first data page */ |
631 | if (!err) | |
0bfcfcca | 632 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 633 | |
51dd6249 | 634 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
635 | return err; |
636 | } | |
637 | ||
9a449e9c | 638 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 639 | { |
b0154891 CY |
640 | int err; |
641 | ||
1f227a3e JK |
642 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
643 | return -EIO; | |
644 | ||
fbfa2cc5 JK |
645 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
646 | S_ISLNK(inode->i_mode))) | |
b0154891 | 647 | return 0; |
fbfa2cc5 | 648 | |
51dd6249 NJ |
649 | trace_f2fs_truncate(inode); |
650 | ||
14b44d23 JK |
651 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
652 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { | |
653 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
654 | return -EIO; | |
655 | } | |
656 | #endif | |
92dffd01 | 657 | /* we should check inline_data size */ |
b9d777b8 | 658 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
659 | err = f2fs_convert_inline_inode(inode); |
660 | if (err) | |
661 | return err; | |
92dffd01 JK |
662 | } |
663 | ||
9a449e9c | 664 | err = truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
665 | if (err) |
666 | return err; | |
667 | ||
078cd827 | 668 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 669 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 670 | return 0; |
fbfa2cc5 JK |
671 | } |
672 | ||
a528d35e | 673 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
1c6d8ee4 | 674 | u32 request_mask, unsigned int query_flags) |
fbfa2cc5 | 675 | { |
a528d35e | 676 | struct inode *inode = d_inode(path->dentry); |
1c6d8ee4 | 677 | struct f2fs_inode_info *fi = F2FS_I(inode); |
1c1d35df | 678 | struct f2fs_inode *ri; |
1c6d8ee4 CY |
679 | unsigned int flags; |
680 | ||
1c1d35df CY |
681 | if (f2fs_has_extra_attr(inode) && |
682 | f2fs_sb_has_inode_crtime(inode->i_sb) && | |
683 | F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { | |
684 | stat->result_mask |= STATX_BTIME; | |
685 | stat->btime.tv_sec = fi->i_crtime.tv_sec; | |
686 | stat->btime.tv_nsec = fi->i_crtime.tv_nsec; | |
687 | } | |
688 | ||
2c1d0305 | 689 | flags = fi->i_flags & (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL); |
1c6d8ee4 CY |
690 | if (flags & FS_APPEND_FL) |
691 | stat->attributes |= STATX_ATTR_APPEND; | |
692 | if (flags & FS_COMPR_FL) | |
693 | stat->attributes |= STATX_ATTR_COMPRESSED; | |
694 | if (f2fs_encrypted_inode(inode)) | |
695 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
696 | if (flags & FS_IMMUTABLE_FL) | |
697 | stat->attributes |= STATX_ATTR_IMMUTABLE; | |
698 | if (flags & FS_NODUMP_FL) | |
699 | stat->attributes |= STATX_ATTR_NODUMP; | |
700 | ||
701 | stat->attributes_mask |= (STATX_ATTR_APPEND | | |
702 | STATX_ATTR_COMPRESSED | | |
703 | STATX_ATTR_ENCRYPTED | | |
704 | STATX_ATTR_IMMUTABLE | | |
705 | STATX_ATTR_NODUMP); | |
706 | ||
fbfa2cc5 | 707 | generic_fillattr(inode, stat); |
5b4267d1 JK |
708 | |
709 | /* we need to show initial sectors used for inline_data/dentries */ | |
710 | if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || | |
711 | f2fs_has_inline_dentry(inode)) | |
712 | stat->blocks += (stat->size + 511) >> 9; | |
713 | ||
fbfa2cc5 JK |
714 | return 0; |
715 | } | |
716 | ||
717 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
718 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
719 | { | |
fbfa2cc5 JK |
720 | unsigned int ia_valid = attr->ia_valid; |
721 | ||
722 | if (ia_valid & ATTR_UID) | |
723 | inode->i_uid = attr->ia_uid; | |
724 | if (ia_valid & ATTR_GID) | |
725 | inode->i_gid = attr->ia_gid; | |
726 | if (ia_valid & ATTR_ATIME) | |
95582b00 DD |
727 | inode->i_atime = timespec64_trunc(attr->ia_atime, |
728 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 729 | if (ia_valid & ATTR_MTIME) |
95582b00 DD |
730 | inode->i_mtime = timespec64_trunc(attr->ia_mtime, |
731 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 732 | if (ia_valid & ATTR_CTIME) |
95582b00 DD |
733 | inode->i_ctime = timespec64_trunc(attr->ia_ctime, |
734 | inode->i_sb->s_time_gran); | |
fbfa2cc5 JK |
735 | if (ia_valid & ATTR_MODE) { |
736 | umode_t mode = attr->ia_mode; | |
737 | ||
738 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
739 | mode &= ~S_ISGID; | |
91942321 | 740 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
741 | } |
742 | } | |
743 | #else | |
744 | #define __setattr_copy setattr_copy | |
745 | #endif | |
746 | ||
747 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
748 | { | |
2b0143b5 | 749 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 750 | int err; |
c0ed4405 | 751 | bool size_changed = false; |
fbfa2cc5 | 752 | |
1f227a3e JK |
753 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
754 | return -EIO; | |
755 | ||
31051c85 | 756 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
757 | if (err) |
758 | return err; | |
759 | ||
20bb2479 EB |
760 | err = fscrypt_prepare_setattr(dentry, attr); |
761 | if (err) | |
762 | return err; | |
763 | ||
0abd675e CY |
764 | if (is_quota_modification(inode, attr)) { |
765 | err = dquot_initialize(inode); | |
766 | if (err) | |
767 | return err; | |
768 | } | |
769 | if ((attr->ia_valid & ATTR_UID && | |
770 | !uid_eq(attr->ia_uid, inode->i_uid)) || | |
771 | (attr->ia_valid & ATTR_GID && | |
772 | !gid_eq(attr->ia_gid, inode->i_gid))) { | |
773 | err = dquot_transfer(inode, attr); | |
774 | if (err) | |
775 | return err; | |
776 | } | |
777 | ||
09db6a2e | 778 | if (attr->ia_valid & ATTR_SIZE) { |
3c454145 | 779 | if (attr->ia_size <= i_size_read(inode)) { |
5a3a2d83 | 780 | down_write(&F2FS_I(inode)->i_mmap_sem); |
09db6a2e | 781 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 782 | err = f2fs_truncate(inode); |
5a3a2d83 | 783 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b0154891 CY |
784 | if (err) |
785 | return err; | |
09db6a2e CY |
786 | } else { |
787 | /* | |
3c454145 CY |
788 | * do not trim all blocks after i_size if target size is |
789 | * larger than i_size. | |
09db6a2e | 790 | */ |
5a3a2d83 | 791 | down_write(&F2FS_I(inode)->i_mmap_sem); |
3c454145 | 792 | truncate_setsize(inode, attr->ia_size); |
5a3a2d83 | 793 | up_write(&F2FS_I(inode)->i_mmap_sem); |
0cab80ee CY |
794 | |
795 | /* should convert inline inode here */ | |
b9d777b8 | 796 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
797 | err = f2fs_convert_inline_inode(inode); |
798 | if (err) | |
799 | return err; | |
800 | } | |
078cd827 | 801 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 802 | } |
c0ed4405 | 803 | |
a0d00fad CY |
804 | down_write(&F2FS_I(inode)->i_sem); |
805 | F2FS_I(inode)->last_disk_size = i_size_read(inode); | |
806 | up_write(&F2FS_I(inode)->i_sem); | |
807 | ||
c0ed4405 | 808 | size_changed = true; |
fbfa2cc5 JK |
809 | } |
810 | ||
811 | __setattr_copy(inode, attr); | |
812 | ||
813 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 814 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
91942321 JK |
815 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
816 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
817 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
818 | } |
819 | } | |
820 | ||
c0ed4405 YH |
821 | /* file size may changed here */ |
822 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
823 | |
824 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
825 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
826 | ||
fbfa2cc5 JK |
827 | return err; |
828 | } | |
829 | ||
830 | const struct inode_operations f2fs_file_inode_operations = { | |
831 | .getattr = f2fs_getattr, | |
832 | .setattr = f2fs_setattr, | |
833 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 834 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 835 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 836 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 837 | #endif |
9ab70134 | 838 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
839 | }; |
840 | ||
6394328a | 841 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
842 | loff_t start, loff_t len) |
843 | { | |
4081363f | 844 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
845 | struct page *page; |
846 | ||
847 | if (!len) | |
6394328a | 848 | return 0; |
fbfa2cc5 | 849 | |
2c4db1a6 | 850 | f2fs_balance_fs(sbi, true); |
bd43df02 | 851 | |
e479556b | 852 | f2fs_lock_op(sbi); |
64aa7ed9 | 853 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 854 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 855 | |
6394328a CY |
856 | if (IS_ERR(page)) |
857 | return PTR_ERR(page); | |
858 | ||
fec1d657 | 859 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
860 | zero_user(page, start, len); |
861 | set_page_dirty(page); | |
862 | f2fs_put_page(page, 1); | |
863 | return 0; | |
fbfa2cc5 JK |
864 | } |
865 | ||
866 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
867 | { | |
fbfa2cc5 JK |
868 | int err; |
869 | ||
ea58711e | 870 | while (pg_start < pg_end) { |
fbfa2cc5 | 871 | struct dnode_of_data dn; |
ea58711e | 872 | pgoff_t end_offset, count; |
9eaeba70 | 873 | |
fbfa2cc5 | 874 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
ea58711e | 875 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 876 | if (err) { |
ea58711e | 877 | if (err == -ENOENT) { |
48ab25f4 | 878 | pg_start = get_next_page_offset(&dn, pg_start); |
fbfa2cc5 | 879 | continue; |
ea58711e | 880 | } |
fbfa2cc5 JK |
881 | return err; |
882 | } | |
883 | ||
81ca7350 | 884 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
885 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
886 | ||
887 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
888 | ||
889 | truncate_data_blocks_range(&dn, count); | |
fbfa2cc5 | 890 | f2fs_put_dnode(&dn); |
ea58711e CY |
891 | |
892 | pg_start += count; | |
fbfa2cc5 JK |
893 | } |
894 | return 0; | |
895 | } | |
896 | ||
a66c7b2f | 897 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
898 | { |
899 | pgoff_t pg_start, pg_end; | |
900 | loff_t off_start, off_end; | |
b9d777b8 | 901 | int ret; |
fbfa2cc5 | 902 | |
b9d777b8 JK |
903 | ret = f2fs_convert_inline_inode(inode); |
904 | if (ret) | |
905 | return ret; | |
9ffe0fb5 | 906 | |
09cbfeaf KS |
907 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
908 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 909 | |
09cbfeaf KS |
910 | off_start = offset & (PAGE_SIZE - 1); |
911 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
912 | |
913 | if (pg_start == pg_end) { | |
6394328a | 914 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 915 | off_end - off_start); |
6394328a CY |
916 | if (ret) |
917 | return ret; | |
fbfa2cc5 | 918 | } else { |
6394328a CY |
919 | if (off_start) { |
920 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 921 | PAGE_SIZE - off_start); |
6394328a CY |
922 | if (ret) |
923 | return ret; | |
924 | } | |
925 | if (off_end) { | |
926 | ret = fill_zero(inode, pg_end, 0, off_end); | |
927 | if (ret) | |
928 | return ret; | |
929 | } | |
fbfa2cc5 JK |
930 | |
931 | if (pg_start < pg_end) { | |
932 | struct address_space *mapping = inode->i_mapping; | |
933 | loff_t blk_start, blk_end; | |
4081363f | 934 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 935 | |
2c4db1a6 | 936 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 937 | |
09cbfeaf KS |
938 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
939 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
5a3a2d83 | 940 | down_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
941 | truncate_inode_pages_range(mapping, blk_start, |
942 | blk_end - 1); | |
39936837 | 943 | |
e479556b | 944 | f2fs_lock_op(sbi); |
fbfa2cc5 | 945 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 946 | f2fs_unlock_op(sbi); |
5a3a2d83 | 947 | up_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
948 | } |
949 | } | |
950 | ||
fbfa2cc5 JK |
951 | return ret; |
952 | } | |
953 | ||
0a2aa8fb JK |
954 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
955 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
956 | { |
957 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
958 | struct dnode_of_data dn; | |
0a2aa8fb | 959 | int ret, done, i; |
ecbaa406 | 960 | |
0a2aa8fb | 961 | next_dnode: |
6e2c64ad | 962 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
0a2aa8fb | 963 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
964 | if (ret && ret != -ENOENT) { |
965 | return ret; | |
966 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
967 | if (dn.max_level == 0) |
968 | return -ENOENT; | |
969 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
970 | blkaddr += done; | |
971 | do_replace += done; | |
972 | goto next; | |
973 | } | |
974 | ||
975 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
976 | dn.ofs_in_node, len); | |
977 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
7a2af766 CY |
978 | *blkaddr = datablock_addr(dn.inode, |
979 | dn.node_page, dn.ofs_in_node); | |
0a2aa8fb JK |
980 | if (!is_checkpointed_data(sbi, *blkaddr)) { |
981 | ||
982 | if (test_opt(sbi, LFS)) { | |
983 | f2fs_put_dnode(&dn); | |
984 | return -ENOTSUPP; | |
985 | } | |
986 | ||
6e2c64ad | 987 | /* do not invalidate this block address */ |
f28b3434 | 988 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 989 | *do_replace = 1; |
b4ace337 | 990 | } |
6e2c64ad | 991 | } |
0a2aa8fb JK |
992 | f2fs_put_dnode(&dn); |
993 | next: | |
994 | len -= done; | |
995 | off += done; | |
996 | if (len) | |
997 | goto next_dnode; | |
998 | return 0; | |
999 | } | |
b4ace337 | 1000 | |
0a2aa8fb JK |
1001 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
1002 | int *do_replace, pgoff_t off, int len) | |
1003 | { | |
1004 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1005 | struct dnode_of_data dn; | |
1006 | int ret, i; | |
b4ace337 | 1007 | |
0a2aa8fb JK |
1008 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
1009 | if (*do_replace == 0) | |
1010 | continue; | |
b4ace337 | 1011 | |
0a2aa8fb JK |
1012 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1013 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); | |
1014 | if (ret) { | |
1015 | dec_valid_block_count(sbi, inode, 1); | |
1016 | invalidate_blocks(sbi, *blkaddr); | |
1017 | } else { | |
1018 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 1019 | } |
0a2aa8fb JK |
1020 | f2fs_put_dnode(&dn); |
1021 | } | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
1026 | block_t *blkaddr, int *do_replace, | |
1027 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
1028 | { | |
1029 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
1030 | pgoff_t i = 0; | |
1031 | int ret; | |
36abef4e | 1032 | |
0a2aa8fb JK |
1033 | while (i < len) { |
1034 | if (blkaddr[i] == NULL_ADDR && !full) { | |
1035 | i++; | |
1036 | continue; | |
6e2c64ad | 1037 | } |
b4ace337 | 1038 | |
0a2aa8fb JK |
1039 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
1040 | struct dnode_of_data dn; | |
1041 | struct node_info ni; | |
1042 | size_t new_size; | |
1043 | pgoff_t ilen; | |
b4ace337 | 1044 | |
0a2aa8fb JK |
1045 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
1046 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); | |
1047 | if (ret) | |
1048 | return ret; | |
b4ace337 | 1049 | |
0a2aa8fb JK |
1050 | get_node_info(sbi, dn.nid, &ni); |
1051 | ilen = min((pgoff_t) | |
1052 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
1053 | dn.ofs_in_node, len - i); | |
1054 | do { | |
7a2af766 CY |
1055 | dn.data_blkaddr = datablock_addr(dn.inode, |
1056 | dn.node_page, dn.ofs_in_node); | |
0a2aa8fb JK |
1057 | truncate_data_blocks_range(&dn, 1); |
1058 | ||
1059 | if (do_replace[i]) { | |
1060 | f2fs_i_blocks_write(src_inode, | |
0abd675e | 1061 | 1, false, false); |
0a2aa8fb | 1062 | f2fs_i_blocks_write(dst_inode, |
0abd675e | 1063 | 1, true, false); |
0a2aa8fb JK |
1064 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
1065 | blkaddr[i], ni.version, true, false); | |
1066 | ||
1067 | do_replace[i] = 0; | |
1068 | } | |
1069 | dn.ofs_in_node++; | |
1070 | i++; | |
1071 | new_size = (dst + i) << PAGE_SHIFT; | |
1072 | if (dst_inode->i_size < new_size) | |
1073 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 1074 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1075 | |
0a2aa8fb JK |
1076 | f2fs_put_dnode(&dn); |
1077 | } else { | |
1078 | struct page *psrc, *pdst; | |
1079 | ||
1080 | psrc = get_lock_data_page(src_inode, src + i, true); | |
1081 | if (IS_ERR(psrc)) | |
1082 | return PTR_ERR(psrc); | |
1083 | pdst = get_new_data_page(dst_inode, NULL, dst + i, | |
1084 | true); | |
1085 | if (IS_ERR(pdst)) { | |
1086 | f2fs_put_page(psrc, 1); | |
1087 | return PTR_ERR(pdst); | |
1088 | } | |
1089 | f2fs_copy_page(psrc, pdst); | |
1090 | set_page_dirty(pdst); | |
1091 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1092 | f2fs_put_page(psrc, 1); |
b4ace337 | 1093 | |
0a2aa8fb JK |
1094 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
1095 | if (ret) | |
1096 | return ret; | |
1097 | i++; | |
1098 | } | |
6e2c64ad JK |
1099 | } |
1100 | return 0; | |
0a2aa8fb | 1101 | } |
b4ace337 | 1102 | |
0a2aa8fb JK |
1103 | static int __exchange_data_block(struct inode *src_inode, |
1104 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1105 | pgoff_t len, bool full) |
0a2aa8fb JK |
1106 | { |
1107 | block_t *src_blkaddr; | |
1108 | int *do_replace; | |
363cad7f | 1109 | pgoff_t olen; |
0a2aa8fb JK |
1110 | int ret; |
1111 | ||
363cad7f JK |
1112 | while (len) { |
1113 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1114 | |
628b3d14 CY |
1115 | src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
1116 | sizeof(block_t) * olen, GFP_KERNEL); | |
363cad7f JK |
1117 | if (!src_blkaddr) |
1118 | return -ENOMEM; | |
0a2aa8fb | 1119 | |
628b3d14 CY |
1120 | do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
1121 | sizeof(int) * olen, GFP_KERNEL); | |
363cad7f JK |
1122 | if (!do_replace) { |
1123 | kvfree(src_blkaddr); | |
1124 | return -ENOMEM; | |
1125 | } | |
0a2aa8fb | 1126 | |
363cad7f JK |
1127 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1128 | do_replace, src, olen); | |
1129 | if (ret) | |
1130 | goto roll_back; | |
0a2aa8fb | 1131 | |
363cad7f JK |
1132 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1133 | do_replace, src, dst, olen, full); | |
1134 | if (ret) | |
1135 | goto roll_back; | |
1136 | ||
1137 | src += olen; | |
1138 | dst += olen; | |
1139 | len -= olen; | |
1140 | ||
1141 | kvfree(src_blkaddr); | |
1142 | kvfree(do_replace); | |
1143 | } | |
0a2aa8fb JK |
1144 | return 0; |
1145 | ||
1146 | roll_back: | |
1147 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); | |
1148 | kvfree(src_blkaddr); | |
1149 | kvfree(do_replace); | |
6e2c64ad JK |
1150 | return ret; |
1151 | } | |
b4ace337 | 1152 | |
6e2c64ad JK |
1153 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1154 | { | |
1155 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1156 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1157 | int ret; |
6e2c64ad | 1158 | |
0a2aa8fb JK |
1159 | f2fs_balance_fs(sbi, true); |
1160 | f2fs_lock_op(sbi); | |
5f281fab JK |
1161 | |
1162 | f2fs_drop_extent_tree(inode); | |
1163 | ||
0a2aa8fb JK |
1164 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1165 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1166 | return ret; |
1167 | } | |
1168 | ||
1169 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1170 | { | |
1171 | pgoff_t pg_start, pg_end; | |
1172 | loff_t new_size; | |
1173 | int ret; | |
1174 | ||
b4ace337 CY |
1175 | if (offset + len >= i_size_read(inode)) |
1176 | return -EINVAL; | |
1177 | ||
1178 | /* collapse range should be aligned to block size of f2fs. */ | |
1179 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1180 | return -EINVAL; | |
1181 | ||
b9d777b8 JK |
1182 | ret = f2fs_convert_inline_inode(inode); |
1183 | if (ret) | |
1184 | return ret; | |
97a7b2c2 | 1185 | |
09cbfeaf KS |
1186 | pg_start = offset >> PAGE_SHIFT; |
1187 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 | 1188 | |
21020812 CY |
1189 | /* avoid gc operation during block exchange */ |
1190 | down_write(&F2FS_I(inode)->dio_rwsem[WRITE]); | |
1191 | ||
5a3a2d83 | 1192 | down_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 CY |
1193 | /* write out all dirty pages from offset */ |
1194 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1195 | if (ret) | |
21020812 | 1196 | goto out_unlock; |
bb06664a | 1197 | |
b4ace337 CY |
1198 | truncate_pagecache(inode, offset); |
1199 | ||
1200 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1201 | if (ret) | |
bb06664a | 1202 | goto out_unlock; |
b4ace337 | 1203 | |
6e2c64ad JK |
1204 | /* write out all moved pages, if possible */ |
1205 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1206 | truncate_pagecache(inode, offset); | |
1207 | ||
b4ace337 | 1208 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1209 | truncate_pagecache(inode, new_size); |
b4ace337 CY |
1210 | |
1211 | ret = truncate_blocks(inode, new_size, true); | |
1212 | if (!ret) | |
fc9581c8 | 1213 | f2fs_i_size_write(inode, new_size); |
bb06664a | 1214 | out_unlock: |
5a3a2d83 | 1215 | up_write(&F2FS_I(inode)->i_mmap_sem); |
21020812 | 1216 | up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); |
b4ace337 CY |
1217 | return ret; |
1218 | } | |
1219 | ||
6e961949 CY |
1220 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1221 | pgoff_t end) | |
1222 | { | |
1223 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1224 | pgoff_t index = start; | |
1225 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1226 | blkcnt_t count = 0; | |
1227 | int ret; | |
1228 | ||
1229 | for (; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1230 | if (datablock_addr(dn->inode, dn->node_page, |
1231 | dn->ofs_in_node) == NULL_ADDR) | |
6e961949 CY |
1232 | count++; |
1233 | } | |
1234 | ||
1235 | dn->ofs_in_node = ofs_in_node; | |
1236 | ret = reserve_new_blocks(dn, count); | |
1237 | if (ret) | |
1238 | return ret; | |
1239 | ||
1240 | dn->ofs_in_node = ofs_in_node; | |
1241 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1242 | dn->data_blkaddr = datablock_addr(dn->inode, |
1243 | dn->node_page, dn->ofs_in_node); | |
6e961949 CY |
1244 | /* |
1245 | * reserve_new_blocks will not guarantee entire block | |
1246 | * allocation. | |
1247 | */ | |
1248 | if (dn->data_blkaddr == NULL_ADDR) { | |
1249 | ret = -ENOSPC; | |
1250 | break; | |
1251 | } | |
1252 | if (dn->data_blkaddr != NEW_ADDR) { | |
1253 | invalidate_blocks(sbi, dn->data_blkaddr); | |
1254 | dn->data_blkaddr = NEW_ADDR; | |
1255 | set_data_blkaddr(dn); | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1260 | ||
1261 | return ret; | |
1262 | } | |
1263 | ||
75cd4e09 CY |
1264 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1265 | int mode) | |
1266 | { | |
1267 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1268 | struct address_space *mapping = inode->i_mapping; | |
1269 | pgoff_t index, pg_start, pg_end; | |
1270 | loff_t new_size = i_size_read(inode); | |
1271 | loff_t off_start, off_end; | |
1272 | int ret = 0; | |
1273 | ||
75cd4e09 CY |
1274 | ret = inode_newsize_ok(inode, (len + offset)); |
1275 | if (ret) | |
1276 | return ret; | |
1277 | ||
b9d777b8 JK |
1278 | ret = f2fs_convert_inline_inode(inode); |
1279 | if (ret) | |
1280 | return ret; | |
75cd4e09 | 1281 | |
5a3a2d83 | 1282 | down_write(&F2FS_I(inode)->i_mmap_sem); |
75cd4e09 CY |
1283 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
1284 | if (ret) | |
5a3a2d83 | 1285 | goto out_sem; |
75cd4e09 CY |
1286 | |
1287 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1288 | ||
09cbfeaf KS |
1289 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1290 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1291 | |
09cbfeaf KS |
1292 | off_start = offset & (PAGE_SIZE - 1); |
1293 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1294 | |
1295 | if (pg_start == pg_end) { | |
6394328a CY |
1296 | ret = fill_zero(inode, pg_start, off_start, |
1297 | off_end - off_start); | |
1298 | if (ret) | |
5a3a2d83 | 1299 | goto out_sem; |
6394328a | 1300 | |
75cd4e09 CY |
1301 | new_size = max_t(loff_t, new_size, offset + len); |
1302 | } else { | |
1303 | if (off_start) { | |
6394328a | 1304 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1305 | PAGE_SIZE - off_start); |
6394328a | 1306 | if (ret) |
5a3a2d83 | 1307 | goto out_sem; |
6394328a | 1308 | |
75cd4e09 | 1309 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1310 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1311 | } |
1312 | ||
6e961949 | 1313 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1314 | struct dnode_of_data dn; |
6e961949 CY |
1315 | unsigned int end_offset; |
1316 | pgoff_t end; | |
75cd4e09 CY |
1317 | |
1318 | f2fs_lock_op(sbi); | |
1319 | ||
6e961949 CY |
1320 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
1321 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); | |
75cd4e09 CY |
1322 | if (ret) { |
1323 | f2fs_unlock_op(sbi); | |
1324 | goto out; | |
1325 | } | |
1326 | ||
6e961949 CY |
1327 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1328 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1329 | ||
1330 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1331 | f2fs_put_dnode(&dn); |
1332 | f2fs_unlock_op(sbi); | |
9434fcde CY |
1333 | |
1334 | f2fs_balance_fs(sbi, dn.node_changed); | |
1335 | ||
6e961949 CY |
1336 | if (ret) |
1337 | goto out; | |
75cd4e09 | 1338 | |
6e961949 | 1339 | index = end; |
75cd4e09 | 1340 | new_size = max_t(loff_t, new_size, |
6e961949 | 1341 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1342 | } |
1343 | ||
1344 | if (off_end) { | |
6394328a CY |
1345 | ret = fill_zero(inode, pg_end, 0, off_end); |
1346 | if (ret) | |
1347 | goto out; | |
1348 | ||
75cd4e09 CY |
1349 | new_size = max_t(loff_t, new_size, offset + len); |
1350 | } | |
1351 | } | |
1352 | ||
1353 | out: | |
17cd07ae CY |
1354 | if (new_size > i_size_read(inode)) { |
1355 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1356 | file_set_keep_isize(inode); | |
1357 | else | |
1358 | f2fs_i_size_write(inode, new_size); | |
1359 | } | |
5a3a2d83 QS |
1360 | out_sem: |
1361 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
75cd4e09 CY |
1362 | |
1363 | return ret; | |
1364 | } | |
1365 | ||
f62185d0 CY |
1366 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1367 | { | |
1368 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1369 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1370 | loff_t new_size; |
6e2c64ad | 1371 | int ret = 0; |
f62185d0 | 1372 | |
f62185d0 | 1373 | new_size = i_size_read(inode) + len; |
46e82fb1 KM |
1374 | ret = inode_newsize_ok(inode, new_size); |
1375 | if (ret) | |
1376 | return ret; | |
f62185d0 CY |
1377 | |
1378 | if (offset >= i_size_read(inode)) | |
1379 | return -EINVAL; | |
1380 | ||
1381 | /* insert range should be aligned to block size of f2fs. */ | |
1382 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1383 | return -EINVAL; | |
1384 | ||
b9d777b8 JK |
1385 | ret = f2fs_convert_inline_inode(inode); |
1386 | if (ret) | |
1387 | return ret; | |
97a7b2c2 | 1388 | |
2c4db1a6 | 1389 | f2fs_balance_fs(sbi, true); |
2a340760 | 1390 | |
21020812 CY |
1391 | /* avoid gc operation during block exchange */ |
1392 | down_write(&F2FS_I(inode)->dio_rwsem[WRITE]); | |
1393 | ||
5a3a2d83 | 1394 | down_write(&F2FS_I(inode)->i_mmap_sem); |
f62185d0 CY |
1395 | ret = truncate_blocks(inode, i_size_read(inode), true); |
1396 | if (ret) | |
5a3a2d83 | 1397 | goto out; |
f62185d0 CY |
1398 | |
1399 | /* write out all dirty pages from offset */ | |
1400 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1401 | if (ret) | |
5a3a2d83 | 1402 | goto out; |
f62185d0 CY |
1403 | |
1404 | truncate_pagecache(inode, offset); | |
1405 | ||
09cbfeaf KS |
1406 | pg_start = offset >> PAGE_SHIFT; |
1407 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1408 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1409 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1410 | ||
1411 | while (!ret && idx > pg_start) { | |
1412 | nr = idx - pg_start; | |
1413 | if (nr > delta) | |
1414 | nr = delta; | |
1415 | idx -= nr; | |
f62185d0 | 1416 | |
f62185d0 | 1417 | f2fs_lock_op(sbi); |
5f281fab JK |
1418 | f2fs_drop_extent_tree(inode); |
1419 | ||
0a2aa8fb JK |
1420 | ret = __exchange_data_block(inode, inode, idx, |
1421 | idx + delta, nr, false); | |
f62185d0 CY |
1422 | f2fs_unlock_op(sbi); |
1423 | } | |
1424 | ||
6e2c64ad JK |
1425 | /* write out all moved pages, if possible */ |
1426 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1427 | truncate_pagecache(inode, offset); | |
1428 | ||
1429 | if (!ret) | |
fc9581c8 | 1430 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1431 | out: |
1432 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
21020812 | 1433 | up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); |
f62185d0 CY |
1434 | return ret; |
1435 | } | |
1436 | ||
fbfa2cc5 JK |
1437 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1438 | loff_t len, int mode) | |
1439 | { | |
4081363f | 1440 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
d5097be5 | 1441 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL, |
c4020b2d | 1442 | .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE }; |
e12dd7bd | 1443 | pgoff_t pg_end; |
fbfa2cc5 | 1444 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1445 | loff_t off_end; |
a7de6086 | 1446 | int err; |
fbfa2cc5 | 1447 | |
a7de6086 JK |
1448 | err = inode_newsize_ok(inode, (len + offset)); |
1449 | if (err) | |
1450 | return err; | |
fbfa2cc5 | 1451 | |
a7de6086 JK |
1452 | err = f2fs_convert_inline_inode(inode); |
1453 | if (err) | |
1454 | return err; | |
9e09fc85 | 1455 | |
2c4db1a6 | 1456 | f2fs_balance_fs(sbi, true); |
2a340760 | 1457 | |
e12dd7bd | 1458 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1459 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1460 | |
e12dd7bd JK |
1461 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1462 | map.m_len = pg_end - map.m_lblk; | |
1463 | if (off_end) | |
1464 | map.m_len++; | |
ead43275 | 1465 | |
a7de6086 JK |
1466 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1467 | if (err) { | |
e12dd7bd | 1468 | pgoff_t last_off; |
fbfa2cc5 | 1469 | |
e12dd7bd | 1470 | if (!map.m_len) |
a7de6086 | 1471 | return err; |
98397ff3 | 1472 | |
e12dd7bd JK |
1473 | last_off = map.m_lblk + map.m_len - 1; |
1474 | ||
1475 | /* update new size to the failed position */ | |
1476 | new_size = (last_off == pg_end) ? offset + len: | |
1477 | (loff_t)(last_off + 1) << PAGE_SHIFT; | |
1478 | } else { | |
1479 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1480 | } |
1481 | ||
e8ed90a6 CY |
1482 | if (new_size > i_size_read(inode)) { |
1483 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1484 | file_set_keep_isize(inode); | |
1485 | else | |
1486 | f2fs_i_size_write(inode, new_size); | |
1487 | } | |
fbfa2cc5 | 1488 | |
a7de6086 | 1489 | return err; |
fbfa2cc5 JK |
1490 | } |
1491 | ||
1492 | static long f2fs_fallocate(struct file *file, int mode, | |
1493 | loff_t offset, loff_t len) | |
1494 | { | |
6131ffaa | 1495 | struct inode *inode = file_inode(file); |
587c0a42 | 1496 | long ret = 0; |
fbfa2cc5 | 1497 | |
1f227a3e JK |
1498 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
1499 | return -EIO; | |
1500 | ||
c998012b CY |
1501 | /* f2fs only support ->fallocate for regular file */ |
1502 | if (!S_ISREG(inode->i_mode)) | |
1503 | return -EINVAL; | |
1504 | ||
f62185d0 CY |
1505 | if (f2fs_encrypted_inode(inode) && |
1506 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1507 | return -EOPNOTSUPP; |
1508 | ||
b4ace337 | 1509 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1510 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1511 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1512 | return -EOPNOTSUPP; |
1513 | ||
5955102c | 1514 | inode_lock(inode); |
3375f696 | 1515 | |
587c0a42 TY |
1516 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1517 | if (offset >= inode->i_size) | |
1518 | goto out; | |
1519 | ||
a66c7b2f | 1520 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1521 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1522 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1523 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1524 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1525 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1526 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1527 | } else { |
fbfa2cc5 | 1528 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1529 | } |
fbfa2cc5 | 1530 | |
3af60a49 | 1531 | if (!ret) { |
078cd827 | 1532 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1533 | f2fs_mark_inode_dirty_sync(inode, false); |
d0239e1b | 1534 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1535 | } |
3375f696 | 1536 | |
587c0a42 | 1537 | out: |
5955102c | 1538 | inode_unlock(inode); |
3375f696 | 1539 | |
c01e2853 | 1540 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1541 | return ret; |
1542 | } | |
1543 | ||
1e84371f JK |
1544 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1545 | { | |
de5307e4 JK |
1546 | /* |
1547 | * f2fs_relase_file is called at every close calls. So we should | |
1548 | * not drop any inmemory pages by close called by other process. | |
1549 | */ | |
1550 | if (!(filp->f_mode & FMODE_WRITE) || | |
1551 | atomic_read(&inode->i_writecount) != 1) | |
1552 | return 0; | |
1553 | ||
1e84371f JK |
1554 | /* some remained atomic pages should discarded */ |
1555 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 1556 | drop_inmem_pages(inode); |
1e84371f | 1557 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1558 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1559 | stat_dec_volatile_write(inode); |
91942321 | 1560 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1561 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1562 | clear_inode_flag(inode, FI_DROP_CACHE); |
1e84371f JK |
1563 | } |
1564 | return 0; | |
1565 | } | |
1566 | ||
7a10f017 | 1567 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
fbfa2cc5 | 1568 | { |
7a10f017 JK |
1569 | struct inode *inode = file_inode(file); |
1570 | ||
1571 | /* | |
1572 | * If the process doing a transaction is crashed, we should do | |
1573 | * roll-back. Otherwise, other reader/write can see corrupted database | |
1574 | * until all the writers close its file. Since this should be done | |
1575 | * before dropping file lock, it needs to do in ->flush. | |
1576 | */ | |
1577 | if (f2fs_is_atomic_file(inode) && | |
1578 | F2FS_I(inode)->inmem_task == current) | |
1579 | drop_inmem_pages(inode); | |
1580 | return 0; | |
fbfa2cc5 JK |
1581 | } |
1582 | ||
52656e6c | 1583 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1584 | { |
6131ffaa | 1585 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1586 | struct f2fs_inode_info *fi = F2FS_I(inode); |
2c1d0305 CY |
1587 | unsigned int flags = fi->i_flags & |
1588 | (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL); | |
52656e6c JK |
1589 | return put_user(flags, (int __user *)arg); |
1590 | } | |
fbfa2cc5 | 1591 | |
2c1d0305 CY |
1592 | static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags) |
1593 | { | |
1594 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1595 | unsigned int oldflags; | |
1596 | ||
1597 | /* Is it quota file? Do not allow user to mess with it */ | |
1598 | if (IS_NOQUOTA(inode)) | |
1599 | return -EPERM; | |
1600 | ||
1601 | flags = f2fs_mask_flags(inode->i_mode, flags); | |
1602 | ||
1603 | oldflags = fi->i_flags; | |
1604 | ||
1605 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) | |
1606 | if (!capable(CAP_LINUX_IMMUTABLE)) | |
1607 | return -EPERM; | |
1608 | ||
1609 | flags = flags & (FS_FL_USER_MODIFIABLE | FS_PROJINHERIT_FL); | |
1610 | flags |= oldflags & ~(FS_FL_USER_MODIFIABLE | FS_PROJINHERIT_FL); | |
1611 | fi->i_flags = flags; | |
1612 | ||
1613 | if (fi->i_flags & FS_PROJINHERIT_FL) | |
1614 | set_inode_flag(inode, FI_PROJ_INHERIT); | |
1615 | else | |
1616 | clear_inode_flag(inode, FI_PROJ_INHERIT); | |
1617 | ||
1618 | inode->i_ctime = current_time(inode); | |
1619 | f2fs_set_inode_flags(inode); | |
1620 | f2fs_mark_inode_dirty_sync(inode, false); | |
1621 | return 0; | |
1622 | } | |
1623 | ||
52656e6c JK |
1624 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1625 | { | |
1626 | struct inode *inode = file_inode(filp); | |
69494229 | 1627 | unsigned int flags; |
52656e6c | 1628 | int ret; |
fbfa2cc5 | 1629 | |
7fb17fe4 CY |
1630 | if (!inode_owner_or_capable(inode)) |
1631 | return -EACCES; | |
1632 | ||
1633 | if (get_user(flags, (int __user *)arg)) | |
1634 | return -EFAULT; | |
1635 | ||
52656e6c JK |
1636 | ret = mnt_want_write_file(filp); |
1637 | if (ret) | |
1638 | return ret; | |
fbfa2cc5 | 1639 | |
5955102c | 1640 | inode_lock(inode); |
fbfa2cc5 | 1641 | |
2c1d0305 | 1642 | ret = __f2fs_ioc_setflags(inode, flags); |
fbfa2cc5 | 1643 | |
a72d4b97 | 1644 | inode_unlock(inode); |
52656e6c JK |
1645 | mnt_drop_write_file(filp); |
1646 | return ret; | |
1647 | } | |
4b2fecc8 | 1648 | |
d49f3e89 CY |
1649 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1650 | { | |
1651 | struct inode *inode = file_inode(filp); | |
1652 | ||
1653 | return put_user(inode->i_generation, (int __user *)arg); | |
1654 | } | |
1655 | ||
88b88a66 JK |
1656 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1657 | { | |
1658 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1659 | int ret; |
88b88a66 JK |
1660 | |
1661 | if (!inode_owner_or_capable(inode)) | |
1662 | return -EACCES; | |
1663 | ||
e811898c JK |
1664 | if (!S_ISREG(inode->i_mode)) |
1665 | return -EINVAL; | |
1666 | ||
7fb17fe4 CY |
1667 | ret = mnt_want_write_file(filp); |
1668 | if (ret) | |
1669 | return ret; | |
1670 | ||
0fac558b CY |
1671 | inode_lock(inode); |
1672 | ||
1e84371f | 1673 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1674 | goto out; |
88b88a66 | 1675 | |
f4c9c743 CY |
1676 | ret = f2fs_convert_inline_inode(inode); |
1677 | if (ret) | |
7fb17fe4 | 1678 | goto out; |
88b88a66 | 1679 | |
91942321 | 1680 | set_inode_flag(inode, FI_ATOMIC_FILE); |
6c3acd97 | 1681 | set_inode_flag(inode, FI_HOT_DATA); |
d0239e1b JK |
1682 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1683 | ||
c27753d6 | 1684 | if (!get_dirty_pages(inode)) |
684ca7e5 | 1685 | goto inc_stat; |
c27753d6 JK |
1686 | |
1687 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1688 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1689 | inode->i_ino, get_dirty_pages(inode)); |
1690 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
684ca7e5 | 1691 | if (ret) { |
91942321 | 1692 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
84a23fbe | 1693 | clear_inode_flag(inode, FI_HOT_DATA); |
684ca7e5 KM |
1694 | goto out; |
1695 | } | |
1696 | ||
1697 | inc_stat: | |
7a10f017 | 1698 | F2FS_I(inode)->inmem_task = current; |
26a28a0c JK |
1699 | stat_inc_atomic_write(inode); |
1700 | stat_update_max_atomic_write(inode); | |
684ca7e5 | 1701 | out: |
0fac558b | 1702 | inode_unlock(inode); |
7fb17fe4 | 1703 | mnt_drop_write_file(filp); |
c27753d6 | 1704 | return ret; |
88b88a66 JK |
1705 | } |
1706 | ||
1707 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1708 | { | |
1709 | struct inode *inode = file_inode(filp); | |
1710 | int ret; | |
1711 | ||
1712 | if (!inode_owner_or_capable(inode)) | |
1713 | return -EACCES; | |
1714 | ||
1715 | ret = mnt_want_write_file(filp); | |
1716 | if (ret) | |
1717 | return ret; | |
1718 | ||
0fac558b CY |
1719 | inode_lock(inode); |
1720 | ||
1dc0f899 CY |
1721 | down_write(&F2FS_I(inode)->dio_rwsem[WRITE]); |
1722 | ||
7fb17fe4 CY |
1723 | if (f2fs_is_volatile_file(inode)) |
1724 | goto err_out; | |
1725 | ||
6282adbf | 1726 | if (f2fs_is_atomic_file(inode)) { |
29b96b54 | 1727 | ret = commit_inmem_pages(inode); |
5fe45743 | 1728 | if (ret) |
edb27dee | 1729 | goto err_out; |
5fe45743 | 1730 | |
26a28a0c | 1731 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1732 | if (!ret) { |
1733 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
84a23fbe | 1734 | clear_inode_flag(inode, FI_HOT_DATA); |
5fe45743 | 1735 | stat_dec_atomic_write(inode); |
447135a8 | 1736 | } |
26a28a0c | 1737 | } else { |
774e1b78 | 1738 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
6282adbf | 1739 | } |
edb27dee | 1740 | err_out: |
1dc0f899 | 1741 | up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); |
0fac558b | 1742 | inode_unlock(inode); |
88b88a66 JK |
1743 | mnt_drop_write_file(filp); |
1744 | return ret; | |
1745 | } | |
1746 | ||
02a1335f JK |
1747 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1748 | { | |
1749 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1750 | int ret; |
02a1335f JK |
1751 | |
1752 | if (!inode_owner_or_capable(inode)) | |
1753 | return -EACCES; | |
1754 | ||
8ff0971f CY |
1755 | if (!S_ISREG(inode->i_mode)) |
1756 | return -EINVAL; | |
1757 | ||
7fb17fe4 CY |
1758 | ret = mnt_want_write_file(filp); |
1759 | if (ret) | |
1760 | return ret; | |
1761 | ||
0fac558b CY |
1762 | inode_lock(inode); |
1763 | ||
1e84371f | 1764 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1765 | goto out; |
1e84371f | 1766 | |
f4c9c743 CY |
1767 | ret = f2fs_convert_inline_inode(inode); |
1768 | if (ret) | |
7fb17fe4 | 1769 | goto out; |
b3d208f9 | 1770 | |
648d50ba CY |
1771 | stat_inc_volatile_write(inode); |
1772 | stat_update_max_volatile_write(inode); | |
1773 | ||
91942321 | 1774 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1775 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1776 | out: |
0fac558b | 1777 | inode_unlock(inode); |
7fb17fe4 CY |
1778 | mnt_drop_write_file(filp); |
1779 | return ret; | |
02a1335f JK |
1780 | } |
1781 | ||
1e84371f JK |
1782 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1783 | { | |
1784 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1785 | int ret; |
1e84371f JK |
1786 | |
1787 | if (!inode_owner_or_capable(inode)) | |
1788 | return -EACCES; | |
1789 | ||
7fb17fe4 CY |
1790 | ret = mnt_want_write_file(filp); |
1791 | if (ret) | |
1792 | return ret; | |
1793 | ||
0fac558b CY |
1794 | inode_lock(inode); |
1795 | ||
1e84371f | 1796 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1797 | goto out; |
1e84371f | 1798 | |
7fb17fe4 CY |
1799 | if (!f2fs_is_first_block_written(inode)) { |
1800 | ret = truncate_partial_data_page(inode, 0, true); | |
1801 | goto out; | |
1802 | } | |
3c6c2beb | 1803 | |
7fb17fe4 CY |
1804 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1805 | out: | |
0fac558b | 1806 | inode_unlock(inode); |
7fb17fe4 CY |
1807 | mnt_drop_write_file(filp); |
1808 | return ret; | |
1e84371f JK |
1809 | } |
1810 | ||
1811 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1812 | { | |
1813 | struct inode *inode = file_inode(filp); | |
1814 | int ret; | |
1815 | ||
1816 | if (!inode_owner_or_capable(inode)) | |
1817 | return -EACCES; | |
1818 | ||
1819 | ret = mnt_want_write_file(filp); | |
1820 | if (ret) | |
1821 | return ret; | |
1822 | ||
0fac558b CY |
1823 | inode_lock(inode); |
1824 | ||
26dc3d44 | 1825 | if (f2fs_is_atomic_file(inode)) |
29b96b54 | 1826 | drop_inmem_pages(inode); |
732d5648 | 1827 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1828 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1829 | stat_dec_volatile_write(inode); |
608514de | 1830 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1831 | } |
de6a8ec9 | 1832 | |
0fac558b CY |
1833 | inode_unlock(inode); |
1834 | ||
1e84371f | 1835 | mnt_drop_write_file(filp); |
d0239e1b | 1836 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1837 | return ret; |
1838 | } | |
1839 | ||
1abff93d JK |
1840 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1841 | { | |
1842 | struct inode *inode = file_inode(filp); | |
1843 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1844 | struct super_block *sb = sbi->sb; | |
1845 | __u32 in; | |
7fb17fe4 | 1846 | int ret; |
1abff93d JK |
1847 | |
1848 | if (!capable(CAP_SYS_ADMIN)) | |
1849 | return -EPERM; | |
1850 | ||
1851 | if (get_user(in, (__u32 __user *)arg)) | |
1852 | return -EFAULT; | |
1853 | ||
7fb17fe4 CY |
1854 | ret = mnt_want_write_file(filp); |
1855 | if (ret) | |
1856 | return ret; | |
1857 | ||
1abff93d JK |
1858 | switch (in) { |
1859 | case F2FS_GOING_DOWN_FULLSYNC: | |
1860 | sb = freeze_bdev(sb->s_bdev); | |
d027c484 CY |
1861 | if (IS_ERR(sb)) { |
1862 | ret = PTR_ERR(sb); | |
1863 | goto out; | |
1864 | } | |
1865 | if (sb) { | |
38f91ca8 | 1866 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1867 | thaw_bdev(sb->s_bdev, sb); |
1868 | } | |
1869 | break; | |
1870 | case F2FS_GOING_DOWN_METASYNC: | |
1871 | /* do checkpoint only */ | |
d027c484 CY |
1872 | ret = f2fs_sync_fs(sb, 1); |
1873 | if (ret) | |
1874 | goto out; | |
38f91ca8 | 1875 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1876 | break; |
1877 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1878 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1879 | break; |
c912a829 | 1880 | case F2FS_GOING_DOWN_METAFLUSH: |
b0af6d49 | 1881 | sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); |
38f91ca8 | 1882 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1883 | break; |
1abff93d | 1884 | default: |
7fb17fe4 CY |
1885 | ret = -EINVAL; |
1886 | goto out; | |
1abff93d | 1887 | } |
7950e9ac CY |
1888 | |
1889 | stop_gc_thread(sbi); | |
1890 | stop_discard_thread(sbi); | |
1891 | ||
1892 | drop_discard_cmd(sbi); | |
1893 | clear_opt(sbi, DISCARD); | |
1894 | ||
d0239e1b | 1895 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 CY |
1896 | out: |
1897 | mnt_drop_write_file(filp); | |
1898 | return ret; | |
1abff93d JK |
1899 | } |
1900 | ||
52656e6c JK |
1901 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1902 | { | |
1903 | struct inode *inode = file_inode(filp); | |
1904 | struct super_block *sb = inode->i_sb; | |
1905 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1906 | struct fstrim_range range; | |
1907 | int ret; | |
4b2fecc8 | 1908 | |
52656e6c JK |
1909 | if (!capable(CAP_SYS_ADMIN)) |
1910 | return -EPERM; | |
4b2fecc8 | 1911 | |
52656e6c JK |
1912 | if (!blk_queue_discard(q)) |
1913 | return -EOPNOTSUPP; | |
4b2fecc8 | 1914 | |
52656e6c JK |
1915 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1916 | sizeof(range))) | |
1917 | return -EFAULT; | |
4b2fecc8 | 1918 | |
7fb17fe4 CY |
1919 | ret = mnt_want_write_file(filp); |
1920 | if (ret) | |
1921 | return ret; | |
1922 | ||
52656e6c JK |
1923 | range.minlen = max((unsigned int)range.minlen, |
1924 | q->limits.discard_granularity); | |
1925 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1926 | mnt_drop_write_file(filp); |
52656e6c JK |
1927 | if (ret < 0) |
1928 | return ret; | |
4b2fecc8 | 1929 | |
52656e6c JK |
1930 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1931 | sizeof(range))) | |
1932 | return -EFAULT; | |
d0239e1b | 1933 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1934 | return 0; |
1935 | } | |
1936 | ||
f424f664 JK |
1937 | static bool uuid_is_nonzero(__u8 u[16]) |
1938 | { | |
1939 | int i; | |
1940 | ||
1941 | for (i = 0; i < 16; i++) | |
1942 | if (u[i]) | |
1943 | return true; | |
1944 | return false; | |
1945 | } | |
1946 | ||
1947 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1948 | { | |
f424f664 JK |
1949 | struct inode *inode = file_inode(filp); |
1950 | ||
ccd31cb2 | 1951 | if (!f2fs_sb_has_encrypt(inode->i_sb)) |
ead710b7 CY |
1952 | return -EOPNOTSUPP; |
1953 | ||
d0239e1b | 1954 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1955 | |
db717d8e | 1956 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
1957 | } |
1958 | ||
1959 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1960 | { | |
ccd31cb2 | 1961 | if (!f2fs_sb_has_encrypt(file_inode(filp)->i_sb)) |
ead710b7 | 1962 | return -EOPNOTSUPP; |
db717d8e | 1963 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
1964 | } |
1965 | ||
1966 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1967 | { | |
1968 | struct inode *inode = file_inode(filp); | |
1969 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1970 | int err; | |
1971 | ||
ccd31cb2 | 1972 | if (!f2fs_sb_has_encrypt(inode->i_sb)) |
f424f664 JK |
1973 | return -EOPNOTSUPP; |
1974 | ||
f424f664 JK |
1975 | err = mnt_want_write_file(filp); |
1976 | if (err) | |
1977 | return err; | |
1978 | ||
846ae671 | 1979 | down_write(&sbi->sb_lock); |
d0d3f1b3 CY |
1980 | |
1981 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
1982 | goto got_it; | |
1983 | ||
f424f664 JK |
1984 | /* update superblock with uuid */ |
1985 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
1986 | ||
c5bda1c8 | 1987 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
1988 | if (err) { |
1989 | /* undo new data */ | |
1990 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
d0d3f1b3 | 1991 | goto out_err; |
f424f664 JK |
1992 | } |
1993 | got_it: | |
1994 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
1995 | 16)) | |
d0d3f1b3 CY |
1996 | err = -EFAULT; |
1997 | out_err: | |
846ae671 | 1998 | up_write(&sbi->sb_lock); |
d0d3f1b3 CY |
1999 | mnt_drop_write_file(filp); |
2000 | return err; | |
f424f664 JK |
2001 | } |
2002 | ||
c1c1b583 CY |
2003 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
2004 | { | |
2005 | struct inode *inode = file_inode(filp); | |
2006 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 2007 | __u32 sync; |
7fb17fe4 | 2008 | int ret; |
c1c1b583 CY |
2009 | |
2010 | if (!capable(CAP_SYS_ADMIN)) | |
2011 | return -EPERM; | |
2012 | ||
d530d4d8 | 2013 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
2014 | return -EFAULT; |
2015 | ||
d530d4d8 CY |
2016 | if (f2fs_readonly(sbi->sb)) |
2017 | return -EROFS; | |
c1c1b583 | 2018 | |
7fb17fe4 CY |
2019 | ret = mnt_want_write_file(filp); |
2020 | if (ret) | |
2021 | return ret; | |
2022 | ||
d530d4d8 | 2023 | if (!sync) { |
7fb17fe4 CY |
2024 | if (!mutex_trylock(&sbi->gc_mutex)) { |
2025 | ret = -EBUSY; | |
2026 | goto out; | |
2027 | } | |
d530d4d8 CY |
2028 | } else { |
2029 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
2030 | } |
2031 | ||
e066b83c | 2032 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
7fb17fe4 CY |
2033 | out: |
2034 | mnt_drop_write_file(filp); | |
2035 | return ret; | |
c1c1b583 CY |
2036 | } |
2037 | ||
34dc77ad JK |
2038 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
2039 | { | |
2040 | struct inode *inode = file_inode(filp); | |
2041 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2042 | struct f2fs_gc_range range; | |
2043 | u64 end; | |
2044 | int ret; | |
2045 | ||
2046 | if (!capable(CAP_SYS_ADMIN)) | |
2047 | return -EPERM; | |
2048 | ||
2049 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, | |
2050 | sizeof(range))) | |
2051 | return -EFAULT; | |
2052 | ||
2053 | if (f2fs_readonly(sbi->sb)) | |
2054 | return -EROFS; | |
2055 | ||
2056 | ret = mnt_want_write_file(filp); | |
2057 | if (ret) | |
2058 | return ret; | |
2059 | ||
2060 | end = range.start + range.len; | |
da5ce874 QS |
2061 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) { |
2062 | ret = -EINVAL; | |
2063 | goto out; | |
2064 | } | |
34dc77ad JK |
2065 | do_more: |
2066 | if (!range.sync) { | |
2067 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2068 | ret = -EBUSY; | |
2069 | goto out; | |
2070 | } | |
2071 | } else { | |
2072 | mutex_lock(&sbi->gc_mutex); | |
2073 | } | |
2074 | ||
2075 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); | |
2076 | range.start += sbi->blocks_per_seg; | |
2077 | if (range.start <= end) | |
2078 | goto do_more; | |
2079 | out: | |
2080 | mnt_drop_write_file(filp); | |
2081 | return ret; | |
2082 | } | |
2083 | ||
456b88e4 CY |
2084 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
2085 | { | |
2086 | struct inode *inode = file_inode(filp); | |
2087 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 2088 | int ret; |
456b88e4 CY |
2089 | |
2090 | if (!capable(CAP_SYS_ADMIN)) | |
2091 | return -EPERM; | |
2092 | ||
2093 | if (f2fs_readonly(sbi->sb)) | |
2094 | return -EROFS; | |
2095 | ||
7fb17fe4 CY |
2096 | ret = mnt_want_write_file(filp); |
2097 | if (ret) | |
2098 | return ret; | |
2099 | ||
2100 | ret = f2fs_sync_fs(sbi->sb, 1); | |
2101 | ||
2102 | mnt_drop_write_file(filp); | |
2103 | return ret; | |
456b88e4 CY |
2104 | } |
2105 | ||
d323d005 CY |
2106 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
2107 | struct file *filp, | |
2108 | struct f2fs_defragment *range) | |
2109 | { | |
2110 | struct inode *inode = file_inode(filp); | |
f3d98e74 CY |
2111 | struct f2fs_map_blocks map = { .m_next_extent = NULL, |
2112 | .m_seg_type = NO_CHECK_TYPE }; | |
e15882b6 | 2113 | struct extent_info ei = {0,0,0}; |
f3d98e74 | 2114 | pgoff_t pg_start, pg_end, next_pgofs; |
3519e3f9 | 2115 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 2116 | unsigned int total = 0, sec_num; |
d323d005 CY |
2117 | block_t blk_end = 0; |
2118 | bool fragmented = false; | |
2119 | int err; | |
2120 | ||
2121 | /* if in-place-update policy is enabled, don't waste time here */ | |
bb9e3bb8 | 2122 | if (should_update_inplace(inode, NULL)) |
d323d005 CY |
2123 | return -EINVAL; |
2124 | ||
09cbfeaf KS |
2125 | pg_start = range->start >> PAGE_SHIFT; |
2126 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 2127 | |
2c4db1a6 | 2128 | f2fs_balance_fs(sbi, true); |
d323d005 | 2129 | |
5955102c | 2130 | inode_lock(inode); |
d323d005 CY |
2131 | |
2132 | /* writeback all dirty pages in the range */ | |
2133 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 2134 | range->start + range->len - 1); |
d323d005 CY |
2135 | if (err) |
2136 | goto out; | |
2137 | ||
2138 | /* | |
2139 | * lookup mapping info in extent cache, skip defragmenting if physical | |
2140 | * block addresses are continuous. | |
2141 | */ | |
2142 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
2143 | if (ei.fofs + ei.len >= pg_end) | |
2144 | goto out; | |
2145 | } | |
2146 | ||
2147 | map.m_lblk = pg_start; | |
f3d98e74 | 2148 | map.m_next_pgofs = &next_pgofs; |
d323d005 CY |
2149 | |
2150 | /* | |
2151 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
2152 | * physical block addresses are continuous even if there are hole(s) | |
2153 | * in logical blocks. | |
2154 | */ | |
2155 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 2156 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2157 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2158 | if (err) |
2159 | goto out; | |
2160 | ||
2161 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2162 | map.m_lblk = next_pgofs; |
d323d005 CY |
2163 | continue; |
2164 | } | |
2165 | ||
25a912e5 | 2166 | if (blk_end && blk_end != map.m_pblk) |
d323d005 | 2167 | fragmented = true; |
25a912e5 CY |
2168 | |
2169 | /* record total count of block that we're going to move */ | |
2170 | total += map.m_len; | |
2171 | ||
d323d005 CY |
2172 | blk_end = map.m_pblk + map.m_len; |
2173 | ||
2174 | map.m_lblk += map.m_len; | |
d323d005 CY |
2175 | } |
2176 | ||
2177 | if (!fragmented) | |
2178 | goto out; | |
2179 | ||
25a912e5 | 2180 | sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
d323d005 CY |
2181 | |
2182 | /* | |
2183 | * make sure there are enough free section for LFS allocation, this can | |
2184 | * avoid defragment running in SSR mode when free section are allocated | |
2185 | * intensively | |
2186 | */ | |
7f3037a5 | 2187 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
2188 | err = -EAGAIN; |
2189 | goto out; | |
2190 | } | |
2191 | ||
25a912e5 CY |
2192 | map.m_lblk = pg_start; |
2193 | map.m_len = pg_end - pg_start; | |
2194 | total = 0; | |
2195 | ||
d323d005 CY |
2196 | while (map.m_lblk < pg_end) { |
2197 | pgoff_t idx; | |
2198 | int cnt = 0; | |
2199 | ||
2200 | do_map: | |
a1c1e9b7 | 2201 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2202 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2203 | if (err) |
2204 | goto clear_out; | |
2205 | ||
2206 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2207 | map.m_lblk = next_pgofs; |
d323d005 CY |
2208 | continue; |
2209 | } | |
2210 | ||
91942321 | 2211 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2212 | |
2213 | idx = map.m_lblk; | |
2214 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2215 | struct page *page; | |
2216 | ||
2217 | page = get_lock_data_page(inode, idx, true); | |
2218 | if (IS_ERR(page)) { | |
2219 | err = PTR_ERR(page); | |
2220 | goto clear_out; | |
2221 | } | |
2222 | ||
2223 | set_page_dirty(page); | |
2224 | f2fs_put_page(page, 1); | |
2225 | ||
2226 | idx++; | |
2227 | cnt++; | |
2228 | total++; | |
2229 | } | |
2230 | ||
2231 | map.m_lblk = idx; | |
d323d005 CY |
2232 | |
2233 | if (idx < pg_end && cnt < blk_per_seg) | |
2234 | goto do_map; | |
2235 | ||
91942321 | 2236 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2237 | |
2238 | err = filemap_fdatawrite(inode->i_mapping); | |
2239 | if (err) | |
2240 | goto out; | |
2241 | } | |
2242 | clear_out: | |
91942321 | 2243 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2244 | out: |
5955102c | 2245 | inode_unlock(inode); |
d323d005 | 2246 | if (!err) |
09cbfeaf | 2247 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2248 | return err; |
2249 | } | |
2250 | ||
2251 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2252 | { | |
2253 | struct inode *inode = file_inode(filp); | |
2254 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2255 | struct f2fs_defragment range; | |
2256 | int err; | |
2257 | ||
2258 | if (!capable(CAP_SYS_ADMIN)) | |
2259 | return -EPERM; | |
2260 | ||
7eab0c0d | 2261 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
d323d005 CY |
2262 | return -EINVAL; |
2263 | ||
d7563861 KM |
2264 | if (f2fs_readonly(sbi->sb)) |
2265 | return -EROFS; | |
d323d005 CY |
2266 | |
2267 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
d7563861 KM |
2268 | sizeof(range))) |
2269 | return -EFAULT; | |
d323d005 CY |
2270 | |
2271 | /* verify alignment of offset & size */ | |
d7563861 KM |
2272 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2273 | return -EINVAL; | |
d323d005 | 2274 | |
1941d7bc | 2275 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
d7563861 KM |
2276 | sbi->max_file_blocks)) |
2277 | return -EINVAL; | |
2278 | ||
2279 | err = mnt_want_write_file(filp); | |
2280 | if (err) | |
2281 | return err; | |
1941d7bc | 2282 | |
d323d005 | 2283 | err = f2fs_defragment_range(sbi, filp, &range); |
d7563861 KM |
2284 | mnt_drop_write_file(filp); |
2285 | ||
d0239e1b | 2286 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 | 2287 | if (err < 0) |
d7563861 | 2288 | return err; |
d323d005 CY |
2289 | |
2290 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2291 | sizeof(range))) | |
d7563861 KM |
2292 | return -EFAULT; |
2293 | ||
2294 | return 0; | |
d323d005 CY |
2295 | } |
2296 | ||
4dd6f977 JK |
2297 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2298 | struct file *file_out, loff_t pos_out, size_t len) | |
2299 | { | |
2300 | struct inode *src = file_inode(file_in); | |
2301 | struct inode *dst = file_inode(file_out); | |
2302 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2303 | size_t olen = len, dst_max_i_size = 0; | |
2304 | size_t dst_osize; | |
2305 | int ret; | |
2306 | ||
2307 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2308 | src->i_sb != dst->i_sb) | |
2309 | return -EXDEV; | |
2310 | ||
2311 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2312 | return -EROFS; | |
2313 | ||
fe8494bf CY |
2314 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2315 | return -EINVAL; | |
4dd6f977 JK |
2316 | |
2317 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2318 | return -EOPNOTSUPP; | |
2319 | ||
d95fd91c FL |
2320 | if (src == dst) { |
2321 | if (pos_in == pos_out) | |
2322 | return 0; | |
2323 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2324 | return -EINVAL; | |
2325 | } | |
2326 | ||
4dd6f977 | 2327 | inode_lock(src); |
bb06664a | 2328 | down_write(&F2FS_I(src)->dio_rwsem[WRITE]); |
20a3d61d | 2329 | if (src != dst) { |
bb06664a CY |
2330 | ret = -EBUSY; |
2331 | if (!inode_trylock(dst)) | |
2332 | goto out; | |
2333 | if (!down_write_trylock(&F2FS_I(dst)->dio_rwsem[WRITE])) { | |
2334 | inode_unlock(dst); | |
20a3d61d CY |
2335 | goto out; |
2336 | } | |
2337 | } | |
4dd6f977 JK |
2338 | |
2339 | ret = -EINVAL; | |
2340 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2341 | goto out_unlock; | |
2342 | if (len == 0) | |
2343 | olen = len = src->i_size - pos_in; | |
2344 | if (pos_in + len == src->i_size) | |
2345 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2346 | if (len == 0) { | |
2347 | ret = 0; | |
2348 | goto out_unlock; | |
2349 | } | |
2350 | ||
2351 | dst_osize = dst->i_size; | |
2352 | if (pos_out + olen > dst->i_size) | |
2353 | dst_max_i_size = pos_out + olen; | |
2354 | ||
2355 | /* verify the end result is block aligned */ | |
2356 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2357 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2358 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2359 | goto out_unlock; | |
2360 | ||
2361 | ret = f2fs_convert_inline_inode(src); | |
2362 | if (ret) | |
2363 | goto out_unlock; | |
2364 | ||
2365 | ret = f2fs_convert_inline_inode(dst); | |
2366 | if (ret) | |
2367 | goto out_unlock; | |
2368 | ||
2369 | /* write out all dirty pages from offset */ | |
2370 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2371 | pos_in, pos_in + len); | |
2372 | if (ret) | |
2373 | goto out_unlock; | |
2374 | ||
2375 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2376 | pos_out, pos_out + len); | |
2377 | if (ret) | |
2378 | goto out_unlock; | |
2379 | ||
2380 | f2fs_balance_fs(sbi, true); | |
2381 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2382 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2383 | pos_out >> F2FS_BLKSIZE_BITS, | |
2384 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2385 | |
2386 | if (!ret) { | |
2387 | if (dst_max_i_size) | |
2388 | f2fs_i_size_write(dst, dst_max_i_size); | |
2389 | else if (dst_osize != dst->i_size) | |
2390 | f2fs_i_size_write(dst, dst_osize); | |
2391 | } | |
2392 | f2fs_unlock_op(sbi); | |
2393 | out_unlock: | |
bb06664a CY |
2394 | if (src != dst) { |
2395 | up_write(&F2FS_I(dst)->dio_rwsem[WRITE]); | |
4dd6f977 | 2396 | inode_unlock(dst); |
bb06664a | 2397 | } |
20a3d61d | 2398 | out: |
bb06664a | 2399 | up_write(&F2FS_I(src)->dio_rwsem[WRITE]); |
4dd6f977 JK |
2400 | inode_unlock(src); |
2401 | return ret; | |
2402 | } | |
2403 | ||
2404 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2405 | { | |
2406 | struct f2fs_move_range range; | |
2407 | struct fd dst; | |
2408 | int err; | |
2409 | ||
2410 | if (!(filp->f_mode & FMODE_READ) || | |
2411 | !(filp->f_mode & FMODE_WRITE)) | |
2412 | return -EBADF; | |
2413 | ||
2414 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2415 | sizeof(range))) | |
2416 | return -EFAULT; | |
2417 | ||
2418 | dst = fdget(range.dst_fd); | |
2419 | if (!dst.file) | |
2420 | return -EBADF; | |
2421 | ||
2422 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2423 | err = -EBADF; | |
2424 | goto err_out; | |
2425 | } | |
2426 | ||
2427 | err = mnt_want_write_file(filp); | |
2428 | if (err) | |
2429 | goto err_out; | |
2430 | ||
2431 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2432 | range.pos_out, range.len); | |
2433 | ||
2434 | mnt_drop_write_file(filp); | |
3cecfa5f KM |
2435 | if (err) |
2436 | goto err_out; | |
4dd6f977 JK |
2437 | |
2438 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2439 | &range, sizeof(range))) | |
2440 | err = -EFAULT; | |
2441 | err_out: | |
2442 | fdput(dst); | |
2443 | return err; | |
2444 | } | |
2445 | ||
e066b83c JK |
2446 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2447 | { | |
2448 | struct inode *inode = file_inode(filp); | |
2449 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2450 | struct sit_info *sm = SIT_I(sbi); | |
2451 | unsigned int start_segno = 0, end_segno = 0; | |
2452 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2453 | struct f2fs_flush_device range; | |
2454 | int ret; | |
2455 | ||
2456 | if (!capable(CAP_SYS_ADMIN)) | |
2457 | return -EPERM; | |
2458 | ||
2459 | if (f2fs_readonly(sbi->sb)) | |
2460 | return -EROFS; | |
2461 | ||
2462 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, | |
2463 | sizeof(range))) | |
2464 | return -EFAULT; | |
2465 | ||
2466 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || | |
2467 | sbi->segs_per_sec != 1) { | |
2468 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2469 | "Can't flush %u in %d for segs_per_sec %u != 1\n", | |
2470 | range.dev_num, sbi->s_ndevs, | |
2471 | sbi->segs_per_sec); | |
2472 | return -EINVAL; | |
2473 | } | |
2474 | ||
2475 | ret = mnt_want_write_file(filp); | |
2476 | if (ret) | |
2477 | return ret; | |
2478 | ||
2479 | if (range.dev_num != 0) | |
2480 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2481 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2482 | ||
2483 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2484 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2485 | start_segno = dev_start_segno; | |
2486 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2487 | ||
2488 | while (start_segno < end_segno) { | |
2489 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2490 | ret = -EBUSY; | |
2491 | goto out; | |
2492 | } | |
2493 | sm->last_victim[GC_CB] = end_segno + 1; | |
2494 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2495 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2496 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2497 | if (ret == -EAGAIN) | |
2498 | ret = 0; | |
2499 | else if (ret < 0) | |
2500 | break; | |
2501 | start_segno++; | |
2502 | } | |
2503 | out: | |
2504 | mnt_drop_write_file(filp); | |
2505 | return ret; | |
2506 | } | |
2507 | ||
e65ef207 JK |
2508 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
2509 | { | |
2510 | struct inode *inode = file_inode(filp); | |
2511 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); | |
2512 | ||
2513 | /* Must validate to set it with SQLite behavior in Android. */ | |
2514 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; | |
2515 | ||
2516 | return put_user(sb_feature, (u32 __user *)arg); | |
2517 | } | |
e066b83c | 2518 | |
2c1d0305 CY |
2519 | #ifdef CONFIG_QUOTA |
2520 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) | |
2521 | { | |
2522 | struct inode *inode = file_inode(filp); | |
2523 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2524 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2525 | struct super_block *sb = sbi->sb; | |
2526 | struct dquot *transfer_to[MAXQUOTAS] = {}; | |
2527 | struct page *ipage; | |
2528 | kprojid_t kprojid; | |
2529 | int err; | |
2530 | ||
2531 | if (!f2fs_sb_has_project_quota(sb)) { | |
2532 | if (projid != F2FS_DEF_PROJID) | |
2533 | return -EOPNOTSUPP; | |
2534 | else | |
2535 | return 0; | |
2536 | } | |
2537 | ||
2538 | if (!f2fs_has_extra_attr(inode)) | |
2539 | return -EOPNOTSUPP; | |
2540 | ||
2541 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); | |
2542 | ||
2543 | if (projid_eq(kprojid, F2FS_I(inode)->i_projid)) | |
2544 | return 0; | |
2545 | ||
2546 | err = mnt_want_write_file(filp); | |
2547 | if (err) | |
2548 | return err; | |
2549 | ||
2550 | err = -EPERM; | |
2551 | inode_lock(inode); | |
2552 | ||
2553 | /* Is it quota file? Do not allow user to mess with it */ | |
2554 | if (IS_NOQUOTA(inode)) | |
2555 | goto out_unlock; | |
2556 | ||
2557 | ipage = get_node_page(sbi, inode->i_ino); | |
2558 | if (IS_ERR(ipage)) { | |
2559 | err = PTR_ERR(ipage); | |
2560 | goto out_unlock; | |
2561 | } | |
2562 | ||
2563 | if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize, | |
2564 | i_projid)) { | |
2565 | err = -EOVERFLOW; | |
2566 | f2fs_put_page(ipage, 1); | |
2567 | goto out_unlock; | |
2568 | } | |
2569 | f2fs_put_page(ipage, 1); | |
2570 | ||
2571 | dquot_initialize(inode); | |
2572 | ||
2573 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); | |
2574 | if (!IS_ERR(transfer_to[PRJQUOTA])) { | |
2575 | err = __dquot_transfer(inode, transfer_to); | |
2576 | dqput(transfer_to[PRJQUOTA]); | |
2577 | if (err) | |
2578 | goto out_dirty; | |
2579 | } | |
2580 | ||
2581 | F2FS_I(inode)->i_projid = kprojid; | |
2582 | inode->i_ctime = current_time(inode); | |
2583 | out_dirty: | |
2584 | f2fs_mark_inode_dirty_sync(inode, true); | |
2585 | out_unlock: | |
2586 | inode_unlock(inode); | |
2587 | mnt_drop_write_file(filp); | |
2588 | return err; | |
2589 | } | |
2590 | #else | |
2591 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) | |
2592 | { | |
2593 | if (projid != F2FS_DEF_PROJID) | |
2594 | return -EOPNOTSUPP; | |
2595 | return 0; | |
2596 | } | |
2597 | #endif | |
2598 | ||
2599 | /* Transfer internal flags to xflags */ | |
2600 | static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags) | |
2601 | { | |
2602 | __u32 xflags = 0; | |
2603 | ||
2604 | if (iflags & FS_SYNC_FL) | |
2605 | xflags |= FS_XFLAG_SYNC; | |
2606 | if (iflags & FS_IMMUTABLE_FL) | |
2607 | xflags |= FS_XFLAG_IMMUTABLE; | |
2608 | if (iflags & FS_APPEND_FL) | |
2609 | xflags |= FS_XFLAG_APPEND; | |
2610 | if (iflags & FS_NODUMP_FL) | |
2611 | xflags |= FS_XFLAG_NODUMP; | |
2612 | if (iflags & FS_NOATIME_FL) | |
2613 | xflags |= FS_XFLAG_NOATIME; | |
2614 | if (iflags & FS_PROJINHERIT_FL) | |
2615 | xflags |= FS_XFLAG_PROJINHERIT; | |
2616 | return xflags; | |
2617 | } | |
2618 | ||
2619 | #define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ | |
2620 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ | |
2621 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) | |
2622 | ||
2623 | /* Flags we can manipulate with through EXT4_IOC_FSSETXATTR */ | |
2624 | #define F2FS_FL_XFLAG_VISIBLE (FS_SYNC_FL | \ | |
2625 | FS_IMMUTABLE_FL | \ | |
2626 | FS_APPEND_FL | \ | |
2627 | FS_NODUMP_FL | \ | |
2628 | FS_NOATIME_FL | \ | |
2629 | FS_PROJINHERIT_FL) | |
2630 | ||
2631 | /* Transfer xflags flags to internal */ | |
2632 | static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags) | |
2633 | { | |
2634 | unsigned long iflags = 0; | |
2635 | ||
2636 | if (xflags & FS_XFLAG_SYNC) | |
2637 | iflags |= FS_SYNC_FL; | |
2638 | if (xflags & FS_XFLAG_IMMUTABLE) | |
2639 | iflags |= FS_IMMUTABLE_FL; | |
2640 | if (xflags & FS_XFLAG_APPEND) | |
2641 | iflags |= FS_APPEND_FL; | |
2642 | if (xflags & FS_XFLAG_NODUMP) | |
2643 | iflags |= FS_NODUMP_FL; | |
2644 | if (xflags & FS_XFLAG_NOATIME) | |
2645 | iflags |= FS_NOATIME_FL; | |
2646 | if (xflags & FS_XFLAG_PROJINHERIT) | |
2647 | iflags |= FS_PROJINHERIT_FL; | |
2648 | ||
2649 | return iflags; | |
2650 | } | |
2651 | ||
2652 | static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) | |
2653 | { | |
2654 | struct inode *inode = file_inode(filp); | |
2655 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2656 | struct fsxattr fa; | |
2657 | ||
2658 | memset(&fa, 0, sizeof(struct fsxattr)); | |
2659 | fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags & | |
2660 | (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL)); | |
2661 | ||
2662 | if (f2fs_sb_has_project_quota(inode->i_sb)) | |
2663 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, | |
2664 | fi->i_projid); | |
2665 | ||
2666 | if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) | |
2667 | return -EFAULT; | |
2668 | return 0; | |
2669 | } | |
2670 | ||
2671 | static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) | |
2672 | { | |
2673 | struct inode *inode = file_inode(filp); | |
2674 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2675 | struct fsxattr fa; | |
2676 | unsigned int flags; | |
2677 | int err; | |
2678 | ||
2679 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa))) | |
2680 | return -EFAULT; | |
2681 | ||
2682 | /* Make sure caller has proper permission */ | |
2683 | if (!inode_owner_or_capable(inode)) | |
2684 | return -EACCES; | |
2685 | ||
2686 | if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS) | |
2687 | return -EOPNOTSUPP; | |
2688 | ||
2689 | flags = f2fs_xflags_to_iflags(fa.fsx_xflags); | |
2690 | if (f2fs_mask_flags(inode->i_mode, flags) != flags) | |
2691 | return -EOPNOTSUPP; | |
2692 | ||
2693 | err = mnt_want_write_file(filp); | |
2694 | if (err) | |
2695 | return err; | |
2696 | ||
2697 | inode_lock(inode); | |
2698 | flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) | | |
2699 | (flags & F2FS_FL_XFLAG_VISIBLE); | |
2700 | err = __f2fs_ioc_setflags(inode, flags); | |
2701 | inode_unlock(inode); | |
2702 | mnt_drop_write_file(filp); | |
2703 | if (err) | |
2704 | return err; | |
2705 | ||
2706 | err = f2fs_ioc_setproject(filp, fa.fsx_projid); | |
2707 | if (err) | |
2708 | return err; | |
2709 | ||
2710 | return 0; | |
2711 | } | |
e066b83c | 2712 | |
1ad71a27 JK |
2713 | int f2fs_pin_file_control(struct inode *inode, bool inc) |
2714 | { | |
2715 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2716 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2717 | ||
2718 | /* Use i_gc_failures for normal file as a risk signal. */ | |
2719 | if (inc) | |
2720 | f2fs_i_gc_failures_write(inode, fi->i_gc_failures + 1); | |
2721 | ||
2722 | if (fi->i_gc_failures > sbi->gc_pin_file_threshold) { | |
2723 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2724 | "%s: Enable GC = ino %lx after %x GC trials\n", | |
2725 | __func__, inode->i_ino, fi->i_gc_failures); | |
2726 | clear_inode_flag(inode, FI_PIN_FILE); | |
2727 | return -EAGAIN; | |
2728 | } | |
2729 | return 0; | |
2730 | } | |
2731 | ||
2732 | static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg) | |
2733 | { | |
2734 | struct inode *inode = file_inode(filp); | |
2735 | __u32 pin; | |
2736 | int ret = 0; | |
2737 | ||
2738 | if (!inode_owner_or_capable(inode)) | |
2739 | return -EACCES; | |
2740 | ||
2741 | if (get_user(pin, (__u32 __user *)arg)) | |
2742 | return -EFAULT; | |
2743 | ||
2744 | if (!S_ISREG(inode->i_mode)) | |
2745 | return -EINVAL; | |
2746 | ||
2747 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
2748 | return -EROFS; | |
2749 | ||
2750 | ret = mnt_want_write_file(filp); | |
2751 | if (ret) | |
2752 | return ret; | |
2753 | ||
2754 | inode_lock(inode); | |
2755 | ||
bb9e3bb8 CY |
2756 | if (should_update_outplace(inode, NULL)) { |
2757 | ret = -EINVAL; | |
2758 | goto out; | |
2759 | } | |
2760 | ||
1ad71a27 JK |
2761 | if (!pin) { |
2762 | clear_inode_flag(inode, FI_PIN_FILE); | |
2763 | F2FS_I(inode)->i_gc_failures = 1; | |
2764 | goto done; | |
2765 | } | |
2766 | ||
2767 | if (f2fs_pin_file_control(inode, false)) { | |
2768 | ret = -EAGAIN; | |
2769 | goto out; | |
2770 | } | |
2771 | ret = f2fs_convert_inline_inode(inode); | |
2772 | if (ret) | |
2773 | goto out; | |
2774 | ||
2775 | set_inode_flag(inode, FI_PIN_FILE); | |
2776 | ret = F2FS_I(inode)->i_gc_failures; | |
2777 | done: | |
2778 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
2779 | out: | |
2780 | inode_unlock(inode); | |
2781 | mnt_drop_write_file(filp); | |
2782 | return ret; | |
2783 | } | |
2784 | ||
2785 | static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg) | |
2786 | { | |
2787 | struct inode *inode = file_inode(filp); | |
2788 | __u32 pin = 0; | |
2789 | ||
2790 | if (is_inode_flag_set(inode, FI_PIN_FILE)) | |
2791 | pin = F2FS_I(inode)->i_gc_failures; | |
2792 | return put_user(pin, (u32 __user *)arg); | |
2793 | } | |
2794 | ||
c4020b2d CY |
2795 | int f2fs_precache_extents(struct inode *inode) |
2796 | { | |
2797 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2798 | struct f2fs_map_blocks map; | |
2799 | pgoff_t m_next_extent; | |
2800 | loff_t end; | |
2801 | int err; | |
2802 | ||
2803 | if (is_inode_flag_set(inode, FI_NO_EXTENT)) | |
2804 | return -EOPNOTSUPP; | |
2805 | ||
2806 | map.m_lblk = 0; | |
2807 | map.m_next_pgofs = NULL; | |
2808 | map.m_next_extent = &m_next_extent; | |
2809 | map.m_seg_type = NO_CHECK_TYPE; | |
2810 | end = F2FS_I_SB(inode)->max_file_blocks; | |
2811 | ||
2812 | while (map.m_lblk < end) { | |
2813 | map.m_len = end - map.m_lblk; | |
2814 | ||
2815 | down_write(&fi->dio_rwsem[WRITE]); | |
2816 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); | |
2817 | up_write(&fi->dio_rwsem[WRITE]); | |
2818 | if (err) | |
2819 | return err; | |
2820 | ||
2821 | map.m_lblk = m_next_extent; | |
2822 | } | |
2823 | ||
2824 | return err; | |
2825 | } | |
2826 | ||
2827 | static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg) | |
2828 | { | |
2829 | return f2fs_precache_extents(file_inode(filp)); | |
2830 | } | |
2831 | ||
52656e6c JK |
2832 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2833 | { | |
1f227a3e JK |
2834 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp))))) |
2835 | return -EIO; | |
2836 | ||
52656e6c JK |
2837 | switch (cmd) { |
2838 | case F2FS_IOC_GETFLAGS: | |
2839 | return f2fs_ioc_getflags(filp, arg); | |
2840 | case F2FS_IOC_SETFLAGS: | |
2841 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2842 | case F2FS_IOC_GETVERSION: |
2843 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2844 | case F2FS_IOC_START_ATOMIC_WRITE: |
2845 | return f2fs_ioc_start_atomic_write(filp); | |
2846 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2847 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2848 | case F2FS_IOC_START_VOLATILE_WRITE: |
2849 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2850 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2851 | return f2fs_ioc_release_volatile_write(filp); | |
2852 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2853 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2854 | case F2FS_IOC_SHUTDOWN: |
2855 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2856 | case FITRIM: |
2857 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2858 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2859 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2860 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2861 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2862 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2863 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2864 | case F2FS_IOC_GARBAGE_COLLECT: |
2865 | return f2fs_ioc_gc(filp, arg); | |
34dc77ad JK |
2866 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
2867 | return f2fs_ioc_gc_range(filp, arg); | |
456b88e4 CY |
2868 | case F2FS_IOC_WRITE_CHECKPOINT: |
2869 | return f2fs_ioc_write_checkpoint(filp, arg); | |
d323d005 CY |
2870 | case F2FS_IOC_DEFRAGMENT: |
2871 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2872 | case F2FS_IOC_MOVE_RANGE: |
2873 | return f2fs_ioc_move_range(filp, arg); | |
e066b83c JK |
2874 | case F2FS_IOC_FLUSH_DEVICE: |
2875 | return f2fs_ioc_flush_device(filp, arg); | |
e65ef207 JK |
2876 | case F2FS_IOC_GET_FEATURES: |
2877 | return f2fs_ioc_get_features(filp, arg); | |
2c1d0305 CY |
2878 | case F2FS_IOC_FSGETXATTR: |
2879 | return f2fs_ioc_fsgetxattr(filp, arg); | |
2880 | case F2FS_IOC_FSSETXATTR: | |
2881 | return f2fs_ioc_fssetxattr(filp, arg); | |
1ad71a27 JK |
2882 | case F2FS_IOC_GET_PIN_FILE: |
2883 | return f2fs_ioc_get_pin_file(filp, arg); | |
2884 | case F2FS_IOC_SET_PIN_FILE: | |
2885 | return f2fs_ioc_set_pin_file(filp, arg); | |
c4020b2d CY |
2886 | case F2FS_IOC_PRECACHE_EXTENTS: |
2887 | return f2fs_ioc_precache_extents(filp, arg); | |
fbfa2cc5 JK |
2888 | default: |
2889 | return -ENOTTY; | |
2890 | } | |
2891 | } | |
2892 | ||
fcc85a4d JK |
2893 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2894 | { | |
b439b103 JK |
2895 | struct file *file = iocb->ki_filp; |
2896 | struct inode *inode = file_inode(file); | |
9dfa1baf | 2897 | struct blk_plug plug; |
b439b103 | 2898 | ssize_t ret; |
fcc85a4d | 2899 | |
1f227a3e JK |
2900 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
2901 | return -EIO; | |
2902 | ||
b91050a8 HL |
2903 | if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT)) |
2904 | return -EINVAL; | |
2905 | ||
2906 | if (!inode_trylock(inode)) { | |
2907 | if (iocb->ki_flags & IOCB_NOWAIT) | |
2908 | return -EAGAIN; | |
2909 | inode_lock(inode); | |
2910 | } | |
2911 | ||
b439b103 JK |
2912 | ret = generic_write_checks(iocb, from); |
2913 | if (ret > 0) { | |
dc7a10dd JK |
2914 | bool preallocated = false; |
2915 | size_t target_size = 0; | |
dc91de78 | 2916 | int err; |
a7de6086 | 2917 | |
dc91de78 JK |
2918 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
2919 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 2920 | |
b91050a8 HL |
2921 | if ((iocb->ki_flags & IOCB_NOWAIT) && |
2922 | (iocb->ki_flags & IOCB_DIRECT)) { | |
2923 | if (!f2fs_overwrite_io(inode, iocb->ki_pos, | |
2924 | iov_iter_count(from)) || | |
2925 | f2fs_has_inline_data(inode) || | |
2926 | f2fs_force_buffered_io(inode, WRITE)) { | |
2927 | inode_unlock(inode); | |
2928 | return -EAGAIN; | |
2929 | } | |
2930 | ||
2931 | } else { | |
dc7a10dd JK |
2932 | preallocated = true; |
2933 | target_size = iocb->ki_pos + iov_iter_count(from); | |
2934 | ||
b91050a8 HL |
2935 | err = f2fs_preallocate_blocks(iocb, from); |
2936 | if (err) { | |
2937 | clear_inode_flag(inode, FI_NO_PREALLOC); | |
2938 | inode_unlock(inode); | |
2939 | return err; | |
2940 | } | |
9dfa1baf | 2941 | } |
a7de6086 JK |
2942 | blk_start_plug(&plug); |
2943 | ret = __generic_file_write_iter(iocb, from); | |
2944 | blk_finish_plug(&plug); | |
dc91de78 | 2945 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b0af6d49 | 2946 | |
dc7a10dd JK |
2947 | /* if we couldn't write data, we should deallocate blocks. */ |
2948 | if (preallocated && i_size_read(inode) < target_size) | |
2949 | f2fs_truncate(inode); | |
2950 | ||
b0af6d49 CY |
2951 | if (ret > 0) |
2952 | f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); | |
b439b103 JK |
2953 | } |
2954 | inode_unlock(inode); | |
2955 | ||
e2592217 CH |
2956 | if (ret > 0) |
2957 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2958 | return ret; |
fcc85a4d JK |
2959 | } |
2960 | ||
e9750824 NJ |
2961 | #ifdef CONFIG_COMPAT |
2962 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2963 | { | |
2964 | switch (cmd) { | |
2965 | case F2FS_IOC32_GETFLAGS: | |
2966 | cmd = F2FS_IOC_GETFLAGS; | |
2967 | break; | |
2968 | case F2FS_IOC32_SETFLAGS: | |
2969 | cmd = F2FS_IOC_SETFLAGS; | |
2970 | break; | |
04ef4b62 CY |
2971 | case F2FS_IOC32_GETVERSION: |
2972 | cmd = F2FS_IOC_GETVERSION; | |
2973 | break; | |
2974 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2975 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2976 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2977 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2978 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2979 | case F2FS_IOC_SHUTDOWN: | |
2980 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
2981 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2982 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2983 | case F2FS_IOC_GARBAGE_COLLECT: | |
34dc77ad | 2984 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
04ef4b62 CY |
2985 | case F2FS_IOC_WRITE_CHECKPOINT: |
2986 | case F2FS_IOC_DEFRAGMENT: | |
4dd6f977 | 2987 | case F2FS_IOC_MOVE_RANGE: |
e066b83c | 2988 | case F2FS_IOC_FLUSH_DEVICE: |
e65ef207 | 2989 | case F2FS_IOC_GET_FEATURES: |
2c1d0305 CY |
2990 | case F2FS_IOC_FSGETXATTR: |
2991 | case F2FS_IOC_FSSETXATTR: | |
1ad71a27 JK |
2992 | case F2FS_IOC_GET_PIN_FILE: |
2993 | case F2FS_IOC_SET_PIN_FILE: | |
c4020b2d | 2994 | case F2FS_IOC_PRECACHE_EXTENTS: |
4dd6f977 | 2995 | break; |
e9750824 NJ |
2996 | default: |
2997 | return -ENOIOCTLCMD; | |
2998 | } | |
2999 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
3000 | } | |
3001 | #endif | |
3002 | ||
fbfa2cc5 | 3003 | const struct file_operations f2fs_file_operations = { |
267378d4 | 3004 | .llseek = f2fs_llseek, |
aad4f8bb | 3005 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
3006 | .write_iter = f2fs_file_write_iter, |
3007 | .open = f2fs_file_open, | |
12662234 | 3008 | .release = f2fs_release_file, |
fbfa2cc5 | 3009 | .mmap = f2fs_file_mmap, |
7a10f017 | 3010 | .flush = f2fs_file_flush, |
fbfa2cc5 JK |
3011 | .fsync = f2fs_sync_file, |
3012 | .fallocate = f2fs_fallocate, | |
3013 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
3014 | #ifdef CONFIG_COMPAT |
3015 | .compat_ioctl = f2fs_compat_ioctl, | |
3016 | #endif | |
fbfa2cc5 | 3017 | .splice_read = generic_file_splice_read, |
8d020765 | 3018 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 3019 | }; |