Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
fbfa2cc5 JK |
3 | * fs/f2fs/file.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
fbfa2cc5 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/stat.h> | |
11 | #include <linux/buffer_head.h> | |
12 | #include <linux/writeback.h> | |
ae51fb31 | 13 | #include <linux/blkdev.h> |
fbfa2cc5 JK |
14 | #include <linux/falloc.h> |
15 | #include <linux/types.h> | |
e9750824 | 16 | #include <linux/compat.h> |
fbfa2cc5 JK |
17 | #include <linux/uaccess.h> |
18 | #include <linux/mount.h> | |
7f7670fe | 19 | #include <linux/pagevec.h> |
dc91de78 | 20 | #include <linux/uio.h> |
8da4b8c4 | 21 | #include <linux/uuid.h> |
4dd6f977 | 22 | #include <linux/file.h> |
fbfa2cc5 JK |
23 | |
24 | #include "f2fs.h" | |
25 | #include "node.h" | |
26 | #include "segment.h" | |
27 | #include "xattr.h" | |
28 | #include "acl.h" | |
c1c1b583 | 29 | #include "gc.h" |
db9f7c1a | 30 | #include "trace.h" |
a2a4a7e4 | 31 | #include <trace/events/f2fs.h> |
fbfa2cc5 | 32 | |
ea4d479b | 33 | static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf) |
5a3a2d83 QS |
34 | { |
35 | struct inode *inode = file_inode(vmf->vma->vm_file); | |
ea4d479b | 36 | vm_fault_t ret; |
5a3a2d83 QS |
37 | |
38 | down_read(&F2FS_I(inode)->i_mmap_sem); | |
ea4d479b | 39 | ret = filemap_fault(vmf); |
5a3a2d83 QS |
40 | up_read(&F2FS_I(inode)->i_mmap_sem); |
41 | ||
ea4d479b | 42 | return ret; |
5a3a2d83 QS |
43 | } |
44 | ||
ea4d479b | 45 | static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf) |
fbfa2cc5 JK |
46 | { |
47 | struct page *page = vmf->page; | |
11bac800 | 48 | struct inode *inode = file_inode(vmf->vma->vm_file); |
4081363f | 49 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
39a86958 | 50 | struct dnode_of_data dn = { .node_changed = false }; |
e479556b | 51 | int err; |
fbfa2cc5 | 52 | |
1f227a3e JK |
53 | if (unlikely(f2fs_cp_error(sbi))) { |
54 | err = -EIO; | |
55 | goto err; | |
56 | } | |
57 | ||
fbfa2cc5 | 58 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
59 | |
60 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 61 | |
11bac800 | 62 | file_update_time(vmf->vma->vm_file); |
5a3a2d83 | 63 | down_read(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 | 64 | lock_page(page); |
6bacf52f | 65 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 66 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 67 | !PageUptodate(page))) { |
fbfa2cc5 JK |
68 | unlock_page(page); |
69 | err = -EFAULT; | |
5a3a2d83 | 70 | goto out_sem; |
fbfa2cc5 JK |
71 | } |
72 | ||
39a86958 CY |
73 | /* block allocation */ |
74 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); | |
75 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
76 | err = f2fs_get_block(&dn, page->index); | |
77 | f2fs_put_dnode(&dn); | |
78 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); | |
79 | if (err) { | |
80 | unlock_page(page); | |
81 | goto out_sem; | |
82 | } | |
83 | ||
84 | /* fill the page */ | |
85 | f2fs_wait_on_page_writeback(page, DATA, false); | |
86 | ||
87 | /* wait for GCed page writeback via META_MAPPING */ | |
88 | f2fs_wait_on_block_writeback(inode, dn.data_blkaddr); | |
89 | ||
fbfa2cc5 JK |
90 | /* |
91 | * check to see if the page is mapped already (no holes) | |
92 | */ | |
93 | if (PageMappedToDisk(page)) | |
39a86958 | 94 | goto out_sem; |
fbfa2cc5 JK |
95 | |
96 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 97 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 98 | i_size_read(inode)) { |
193bea1d | 99 | loff_t offset; |
f11e98bd | 100 | |
09cbfeaf KS |
101 | offset = i_size_read(inode) & ~PAGE_MASK; |
102 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
103 | } |
104 | set_page_dirty(page); | |
237c0790 JK |
105 | if (!PageUptodate(page)) |
106 | SetPageUptodate(page); | |
fbfa2cc5 | 107 | |
b0af6d49 | 108 | f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE); |
c75f2feb | 109 | f2fs_update_time(sbi, REQ_TIME); |
b0af6d49 | 110 | |
e943a10d | 111 | trace_f2fs_vm_page_mkwrite(page, DATA); |
5a3a2d83 QS |
112 | out_sem: |
113 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
39a86958 CY |
114 | |
115 | f2fs_balance_fs(sbi, dn.node_changed); | |
116 | ||
fbfa2cc5 | 117 | sb_end_pagefault(inode->i_sb); |
1f227a3e | 118 | err: |
fbfa2cc5 JK |
119 | return block_page_mkwrite_return(err); |
120 | } | |
121 | ||
122 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
5a3a2d83 | 123 | .fault = f2fs_filemap_fault, |
f1820361 | 124 | .map_pages = filemap_map_pages, |
692bb55d | 125 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
126 | }; |
127 | ||
354a3399 JK |
128 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
129 | { | |
130 | struct dentry *dentry; | |
131 | ||
132 | inode = igrab(inode); | |
133 | dentry = d_find_any_alias(inode); | |
134 | iput(inode); | |
135 | if (!dentry) | |
136 | return 0; | |
137 | ||
f0947e5c JK |
138 | *pino = parent_ino(dentry); |
139 | dput(dentry); | |
354a3399 JK |
140 | return 1; |
141 | } | |
142 | ||
a5fd5050 | 143 | static inline enum cp_reason_type need_do_checkpoint(struct inode *inode) |
9d1589ef | 144 | { |
4081363f | 145 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a5fd5050 | 146 | enum cp_reason_type cp_reason = CP_NO_NEEDED; |
9d1589ef | 147 | |
a5fd5050 CY |
148 | if (!S_ISREG(inode->i_mode)) |
149 | cp_reason = CP_NON_REGULAR; | |
150 | else if (inode->i_nlink != 1) | |
151 | cp_reason = CP_HARDLINK; | |
bbf156f7 | 152 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
a5fd5050 | 153 | cp_reason = CP_SB_NEED_CP; |
9d1589ef | 154 | else if (file_wrong_pino(inode)) |
a5fd5050 | 155 | cp_reason = CP_WRONG_PINO; |
4d57b86d | 156 | else if (!f2fs_space_for_roll_forward(sbi)) |
a5fd5050 | 157 | cp_reason = CP_NO_SPC_ROLL; |
4d57b86d | 158 | else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
a5fd5050 | 159 | cp_reason = CP_NODE_NEED_CP; |
d5053a34 | 160 | else if (test_opt(sbi, FASTBOOT)) |
a5fd5050 | 161 | cp_reason = CP_FASTBOOT_MODE; |
63189b78 | 162 | else if (F2FS_OPTION(sbi).active_logs == 2) |
a5fd5050 | 163 | cp_reason = CP_SPEC_LOG_NUM; |
63189b78 | 164 | else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT && |
4d57b86d CY |
165 | f2fs_need_dentry_mark(sbi, inode->i_ino) && |
166 | f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino, | |
167 | TRANS_DIR_INO)) | |
0a007b97 | 168 | cp_reason = CP_RECOVER_DIR; |
9d1589ef | 169 | |
a5fd5050 | 170 | return cp_reason; |
9d1589ef CY |
171 | } |
172 | ||
9c7bb702 CL |
173 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
174 | { | |
175 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
176 | bool ret = false; | |
177 | /* But we need to avoid that there are some inode updates */ | |
4d57b86d | 178 | if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino)) |
9c7bb702 CL |
179 | ret = true; |
180 | f2fs_put_page(i, 0); | |
181 | return ret; | |
182 | } | |
183 | ||
51455b19 CL |
184 | static void try_to_fix_pino(struct inode *inode) |
185 | { | |
186 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
187 | nid_t pino; | |
188 | ||
189 | down_write(&fi->i_sem); | |
51455b19 CL |
190 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
191 | get_parent_ino(inode, &pino)) { | |
205b9822 | 192 | f2fs_i_pino_write(inode, pino); |
51455b19 | 193 | file_got_pino(inode); |
51455b19 | 194 | } |
ee6d182f | 195 | up_write(&fi->i_sem); |
51455b19 CL |
196 | } |
197 | ||
608514de JK |
198 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
199 | int datasync, bool atomic) | |
fbfa2cc5 JK |
200 | { |
201 | struct inode *inode = file->f_mapping->host; | |
4081363f | 202 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 203 | nid_t ino = inode->i_ino; |
fbfa2cc5 | 204 | int ret = 0; |
a5fd5050 | 205 | enum cp_reason_type cp_reason = 0; |
fbfa2cc5 | 206 | struct writeback_control wbc = { |
c81bf1c8 | 207 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
208 | .nr_to_write = LONG_MAX, |
209 | .for_reclaim = 0, | |
210 | }; | |
50fa53ec | 211 | unsigned int seq_id = 0; |
fbfa2cc5 | 212 | |
4354994f DR |
213 | if (unlikely(f2fs_readonly(inode->i_sb) || |
214 | is_sbi_flag_set(sbi, SBI_CP_DISABLED))) | |
1fa95b0b NJ |
215 | return 0; |
216 | ||
a2a4a7e4 | 217 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c | 218 | |
b61ac5b7 YH |
219 | if (S_ISDIR(inode->i_mode)) |
220 | goto go_write; | |
221 | ||
ea1aa12c | 222 | /* if fdatasync is triggered, let's do in-place-update */ |
c46a155b | 223 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 224 | set_inode_flag(inode, FI_NEED_IPU); |
3b49c9a1 | 225 | ret = file_write_and_wait_range(file, start, end); |
91942321 | 226 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 227 | |
a2a4a7e4 | 228 | if (ret) { |
a5fd5050 | 229 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
fbfa2cc5 | 230 | return ret; |
a2a4a7e4 | 231 | } |
fbfa2cc5 | 232 | |
9c7bb702 | 233 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 234 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 235 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
236 | goto go_write; |
237 | } | |
238 | ||
6d99ba41 JK |
239 | /* |
240 | * if there is no written data, don't waste time to write recovery info. | |
241 | */ | |
91942321 | 242 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
4d57b86d | 243 | !f2fs_exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 244 | |
9c7bb702 CL |
245 | /* it may call write_inode just prior to fsync */ |
246 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 247 | goto go_write; |
19c9c466 | 248 | |
91942321 | 249 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
4d57b86d | 250 | f2fs_exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
251 | goto flush_out; |
252 | goto out; | |
253 | } | |
19c9c466 | 254 | go_write: |
e5d2385e JK |
255 | /* |
256 | * Both of fdatasync() and fsync() are able to be recovered from | |
257 | * sudden-power-off. | |
258 | */ | |
91942321 | 259 | down_read(&F2FS_I(inode)->i_sem); |
a5fd5050 | 260 | cp_reason = need_do_checkpoint(inode); |
91942321 | 261 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 262 | |
a5fd5050 | 263 | if (cp_reason) { |
fbfa2cc5 JK |
264 | /* all the dirty node pages should be flushed for POR */ |
265 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 266 | |
51455b19 CL |
267 | /* |
268 | * We've secured consistency through sync_fs. Following pino | |
269 | * will be used only for fsynced inodes after checkpoint. | |
270 | */ | |
271 | try_to_fix_pino(inode); | |
91942321 JK |
272 | clear_inode_flag(inode, FI_APPEND_WRITE); |
273 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
274 | goto out; |
275 | } | |
88bd02c9 | 276 | sync_nodes: |
c29fd0c0 | 277 | atomic_inc(&sbi->wb_sync_req[NODE]); |
50fa53ec | 278 | ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id); |
c29fd0c0 | 279 | atomic_dec(&sbi->wb_sync_req[NODE]); |
c267ec15 JK |
280 | if (ret) |
281 | goto out; | |
51455b19 | 282 | |
871f599f | 283 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
284 | if (unlikely(f2fs_cp_error(sbi))) { |
285 | ret = -EIO; | |
871f599f | 286 | goto out; |
6d5a1495 | 287 | } |
871f599f | 288 | |
4d57b86d | 289 | if (f2fs_need_inode_block_update(sbi, ino)) { |
7c45729a | 290 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
291 | f2fs_write_inode(inode, NULL); |
292 | goto sync_nodes; | |
fbfa2cc5 | 293 | } |
51455b19 | 294 | |
b6a245eb JK |
295 | /* |
296 | * If it's atomic_write, it's just fine to keep write ordering. So | |
297 | * here we don't need to wait for node write completion, since we use | |
298 | * node chain which serializes node blocks. If one of node writes are | |
299 | * reordered, we can see simply broken chain, resulting in stopping | |
300 | * roll-forward recovery. It means we'll recover all or none node blocks | |
301 | * given fsync mark. | |
302 | */ | |
303 | if (!atomic) { | |
50fa53ec | 304 | ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id); |
b6a245eb JK |
305 | if (ret) |
306 | goto out; | |
307 | } | |
51455b19 CL |
308 | |
309 | /* once recovery info is written, don't need to tack this */ | |
4d57b86d | 310 | f2fs_remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 311 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 312 | flush_out: |
d6290814 | 313 | if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) |
39d787be | 314 | ret = f2fs_issue_flush(sbi, inode->i_ino); |
3f06252f | 315 | if (!ret) { |
4d57b86d | 316 | f2fs_remove_ino_entry(sbi, ino, UPDATE_INO); |
3f06252f | 317 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
4d57b86d | 318 | f2fs_remove_ino_entry(sbi, ino, FLUSH_INO); |
3f06252f | 319 | } |
d0239e1b | 320 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 321 | out: |
a5fd5050 | 322 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
05ca3632 | 323 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
324 | return ret; |
325 | } | |
326 | ||
608514de JK |
327 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
328 | { | |
1f227a3e JK |
329 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file))))) |
330 | return -EIO; | |
608514de JK |
331 | return f2fs_do_sync_file(file, start, end, datasync, false); |
332 | } | |
333 | ||
7f7670fe JK |
334 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
335 | pgoff_t pgofs, int whence) | |
336 | { | |
8faab642 | 337 | struct page *page; |
7f7670fe JK |
338 | int nr_pages; |
339 | ||
340 | if (whence != SEEK_DATA) | |
341 | return 0; | |
342 | ||
343 | /* find first dirty page index */ | |
8faab642 JK |
344 | nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY, |
345 | 1, &page); | |
346 | if (!nr_pages) | |
347 | return ULONG_MAX; | |
348 | pgofs = page->index; | |
349 | put_page(page); | |
7f7670fe JK |
350 | return pgofs; |
351 | } | |
352 | ||
e1da7872 CY |
353 | static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr, |
354 | pgoff_t dirty, pgoff_t pgofs, int whence) | |
7f7670fe JK |
355 | { |
356 | switch (whence) { | |
357 | case SEEK_DATA: | |
358 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
e1da7872 | 359 | is_valid_data_blkaddr(sbi, blkaddr)) |
7f7670fe JK |
360 | return true; |
361 | break; | |
362 | case SEEK_HOLE: | |
363 | if (blkaddr == NULL_ADDR) | |
364 | return true; | |
365 | break; | |
366 | } | |
367 | return false; | |
368 | } | |
369 | ||
267378d4 CY |
370 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
371 | { | |
372 | struct inode *inode = file->f_mapping->host; | |
373 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
374 | struct dnode_of_data dn; | |
7f7670fe JK |
375 | pgoff_t pgofs, end_offset, dirty; |
376 | loff_t data_ofs = offset; | |
377 | loff_t isize; | |
267378d4 CY |
378 | int err = 0; |
379 | ||
5955102c | 380 | inode_lock(inode); |
267378d4 CY |
381 | |
382 | isize = i_size_read(inode); | |
383 | if (offset >= isize) | |
384 | goto fail; | |
385 | ||
386 | /* handle inline data case */ | |
622f28ae | 387 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
388 | if (whence == SEEK_HOLE) |
389 | data_ofs = isize; | |
390 | goto found; | |
391 | } | |
392 | ||
09cbfeaf | 393 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 394 | |
7f7670fe JK |
395 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
396 | ||
09cbfeaf | 397 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 398 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 399 | err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
400 | if (err && err != -ENOENT) { |
401 | goto fail; | |
402 | } else if (err == -ENOENT) { | |
e1c42045 | 403 | /* direct node does not exists */ |
267378d4 | 404 | if (whence == SEEK_DATA) { |
4d57b86d | 405 | pgofs = f2fs_get_next_page_offset(&dn, pgofs); |
267378d4 CY |
406 | continue; |
407 | } else { | |
408 | goto found; | |
409 | } | |
410 | } | |
411 | ||
81ca7350 | 412 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
413 | |
414 | /* find data/hole in dnode block */ | |
415 | for (; dn.ofs_in_node < end_offset; | |
416 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 417 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 418 | block_t blkaddr; |
f11e98bd | 419 | |
7a2af766 CY |
420 | blkaddr = datablock_addr(dn.inode, |
421 | dn.node_page, dn.ofs_in_node); | |
267378d4 | 422 | |
c9b60788 CY |
423 | if (__is_valid_data_blkaddr(blkaddr) && |
424 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
425 | blkaddr, DATA_GENERIC)) { | |
426 | f2fs_put_dnode(&dn); | |
427 | goto fail; | |
428 | } | |
429 | ||
e1da7872 CY |
430 | if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty, |
431 | pgofs, whence)) { | |
267378d4 CY |
432 | f2fs_put_dnode(&dn); |
433 | goto found; | |
434 | } | |
435 | } | |
436 | f2fs_put_dnode(&dn); | |
437 | } | |
438 | ||
439 | if (whence == SEEK_DATA) | |
440 | goto fail; | |
267378d4 | 441 | found: |
fe369bc8 JK |
442 | if (whence == SEEK_HOLE && data_ofs > isize) |
443 | data_ofs = isize; | |
5955102c | 444 | inode_unlock(inode); |
267378d4 CY |
445 | return vfs_setpos(file, data_ofs, maxbytes); |
446 | fail: | |
5955102c | 447 | inode_unlock(inode); |
267378d4 CY |
448 | return -ENXIO; |
449 | } | |
450 | ||
451 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
452 | { | |
453 | struct inode *inode = file->f_mapping->host; | |
454 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
455 | ||
456 | switch (whence) { | |
457 | case SEEK_SET: | |
458 | case SEEK_CUR: | |
459 | case SEEK_END: | |
460 | return generic_file_llseek_size(file, offset, whence, | |
461 | maxbytes, i_size_read(inode)); | |
462 | case SEEK_DATA: | |
463 | case SEEK_HOLE: | |
0b4c5afd JK |
464 | if (offset < 0) |
465 | return -ENXIO; | |
267378d4 CY |
466 | return f2fs_seek_block(file, offset, whence); |
467 | } | |
468 | ||
469 | return -EINVAL; | |
470 | } | |
471 | ||
fbfa2cc5 JK |
472 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
473 | { | |
b3d208f9 | 474 | struct inode *inode = file_inode(file); |
b9d777b8 | 475 | int err; |
b3d208f9 | 476 | |
1f227a3e JK |
477 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
478 | return -EIO; | |
479 | ||
b3d208f9 | 480 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
481 | err = f2fs_convert_inline_inode(inode); |
482 | if (err) | |
483 | return err; | |
b3d208f9 | 484 | |
fbfa2cc5 JK |
485 | file_accessed(file); |
486 | vma->vm_ops = &f2fs_file_vm_ops; | |
487 | return 0; | |
488 | } | |
489 | ||
fcc85a4d JK |
490 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
491 | { | |
2e168c82 | 492 | int err = fscrypt_file_open(inode, filp); |
fcc85a4d | 493 | |
2e168c82 EB |
494 | if (err) |
495 | return err; | |
b91050a8 HL |
496 | |
497 | filp->f_mode |= FMODE_NOWAIT; | |
498 | ||
0abd675e | 499 | return dquot_file_open(inode, filp); |
fcc85a4d JK |
500 | } |
501 | ||
4d57b86d | 502 | void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 503 | { |
4081363f | 504 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 505 | struct f2fs_node *raw_node; |
19b2c30d | 506 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 | 507 | __le32 *addr; |
7a2af766 CY |
508 | int base = 0; |
509 | ||
510 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
511 | base = get_extra_isize(dn->inode); | |
fbfa2cc5 | 512 | |
45590710 | 513 | raw_node = F2FS_NODE(dn->node_page); |
7a2af766 | 514 | addr = blkaddr_in_node(raw_node) + base + ofs; |
fbfa2cc5 | 515 | |
6c311ec6 | 516 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 | 517 | block_t blkaddr = le32_to_cpu(*addr); |
f11e98bd | 518 | |
fbfa2cc5 JK |
519 | if (blkaddr == NULL_ADDR) |
520 | continue; | |
521 | ||
e1509cf2 | 522 | dn->data_blkaddr = NULL_ADDR; |
4d57b86d | 523 | f2fs_set_data_blkaddr(dn); |
c9b60788 CY |
524 | |
525 | if (__is_valid_data_blkaddr(blkaddr) && | |
526 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) | |
527 | continue; | |
528 | ||
4d57b86d | 529 | f2fs_invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 530 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 531 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
532 | nr_free++; |
533 | } | |
19b2c30d | 534 | |
fbfa2cc5 | 535 | if (nr_free) { |
19b2c30d CY |
536 | pgoff_t fofs; |
537 | /* | |
538 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
539 | * we will invalidate all blkaddr in the whole range. | |
540 | */ | |
4d57b86d | 541 | fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), |
81ca7350 | 542 | dn->inode) + ofs; |
19b2c30d | 543 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 544 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
545 | } |
546 | dn->ofs_in_node = ofs; | |
51dd6249 | 547 | |
d0239e1b | 548 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
549 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
550 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
551 | } |
552 | ||
4d57b86d | 553 | void f2fs_truncate_data_blocks(struct dnode_of_data *dn) |
fbfa2cc5 | 554 | { |
4d57b86d | 555 | f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
fbfa2cc5 JK |
556 | } |
557 | ||
0bfcfcca | 558 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 559 | bool cache_only) |
fbfa2cc5 | 560 | { |
193bea1d | 561 | loff_t offset = from & (PAGE_SIZE - 1); |
09cbfeaf | 562 | pgoff_t index = from >> PAGE_SHIFT; |
43f3eae1 | 563 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
564 | struct page *page; |
565 | ||
43f3eae1 | 566 | if (!offset && !cache_only) |
b3d208f9 | 567 | return 0; |
fbfa2cc5 | 568 | |
43f3eae1 | 569 | if (cache_only) { |
34b5d5c2 | 570 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
571 | if (page && PageUptodate(page)) |
572 | goto truncate_out; | |
573 | f2fs_put_page(page, 1); | |
b3d208f9 | 574 | return 0; |
43f3eae1 | 575 | } |
fbfa2cc5 | 576 | |
4d57b86d | 577 | page = f2fs_get_lock_data_page(inode, index, true); |
43f3eae1 | 578 | if (IS_ERR(page)) |
a78aaa2c | 579 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 580 | truncate_out: |
fec1d657 | 581 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 582 | zero_user(page, offset, PAGE_SIZE - offset); |
a9bcf9bc JK |
583 | |
584 | /* An encrypted inode should have a key and truncate the last page. */ | |
585 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); | |
586 | if (!cache_only) | |
0bfcfcca | 587 | set_page_dirty(page); |
fbfa2cc5 | 588 | f2fs_put_page(page, 1); |
b3d208f9 | 589 | return 0; |
fbfa2cc5 JK |
590 | } |
591 | ||
af033b2a CY |
592 | int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock, |
593 | bool buf_write) | |
fbfa2cc5 | 594 | { |
4081363f | 595 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
596 | struct dnode_of_data dn; |
597 | pgoff_t free_from; | |
9ffe0fb5 | 598 | int count = 0, err = 0; |
b3d208f9 | 599 | struct page *ipage; |
0bfcfcca | 600 | bool truncate_page = false; |
af033b2a | 601 | int flag = buf_write ? F2FS_GET_BLOCK_PRE_AIO : F2FS_GET_BLOCK_PRE_DIO; |
fbfa2cc5 | 602 | |
51dd6249 NJ |
603 | trace_f2fs_truncate_blocks_enter(inode, from); |
604 | ||
df033caf | 605 | free_from = (pgoff_t)F2FS_BLK_ALIGN(from); |
fbfa2cc5 | 606 | |
09210c97 CY |
607 | if (free_from >= sbi->max_file_blocks) |
608 | goto free_partial; | |
609 | ||
764aa3e9 | 610 | if (lock) |
af033b2a | 611 | __do_map_lock(sbi, flag, true); |
9ffe0fb5 | 612 | |
4d57b86d | 613 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
b3d208f9 JK |
614 | if (IS_ERR(ipage)) { |
615 | err = PTR_ERR(ipage); | |
616 | goto out; | |
617 | } | |
618 | ||
619 | if (f2fs_has_inline_data(inode)) { | |
4d57b86d | 620 | f2fs_truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 621 | f2fs_put_page(ipage, 1); |
0bfcfcca | 622 | truncate_page = true; |
b3d208f9 JK |
623 | goto out; |
624 | } | |
625 | ||
626 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
4d57b86d | 627 | err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
628 | if (err) { |
629 | if (err == -ENOENT) | |
630 | goto free_next; | |
b3d208f9 | 631 | goto out; |
1ce86bf6 JK |
632 | } |
633 | ||
81ca7350 | 634 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
635 | |
636 | count -= dn.ofs_in_node; | |
9850cf4a | 637 | f2fs_bug_on(sbi, count < 0); |
39936837 | 638 | |
fbfa2cc5 | 639 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
4d57b86d | 640 | f2fs_truncate_data_blocks_range(&dn, count); |
fbfa2cc5 JK |
641 | free_from += count; |
642 | } | |
643 | ||
644 | f2fs_put_dnode(&dn); | |
645 | free_next: | |
4d57b86d | 646 | err = f2fs_truncate_inode_blocks(inode, free_from); |
764d2c80 JK |
647 | out: |
648 | if (lock) | |
af033b2a | 649 | __do_map_lock(sbi, flag, false); |
09210c97 | 650 | free_partial: |
b3d208f9 JK |
651 | /* lastly zero out the first data page */ |
652 | if (!err) | |
0bfcfcca | 653 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 654 | |
51dd6249 | 655 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
656 | return err; |
657 | } | |
658 | ||
9a449e9c | 659 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 660 | { |
b0154891 CY |
661 | int err; |
662 | ||
1f227a3e JK |
663 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
664 | return -EIO; | |
665 | ||
fbfa2cc5 JK |
666 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
667 | S_ISLNK(inode->i_mode))) | |
b0154891 | 668 | return 0; |
fbfa2cc5 | 669 | |
51dd6249 NJ |
670 | trace_f2fs_truncate(inode); |
671 | ||
14b44d23 JK |
672 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { |
673 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
674 | return -EIO; | |
675 | } | |
7fa750a1 | 676 | |
92dffd01 | 677 | /* we should check inline_data size */ |
b9d777b8 | 678 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
679 | err = f2fs_convert_inline_inode(inode); |
680 | if (err) | |
681 | return err; | |
92dffd01 JK |
682 | } |
683 | ||
af033b2a | 684 | err = f2fs_truncate_blocks(inode, i_size_read(inode), true, false); |
b0154891 CY |
685 | if (err) |
686 | return err; | |
687 | ||
078cd827 | 688 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 689 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 690 | return 0; |
fbfa2cc5 JK |
691 | } |
692 | ||
a528d35e | 693 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
1c6d8ee4 | 694 | u32 request_mask, unsigned int query_flags) |
fbfa2cc5 | 695 | { |
a528d35e | 696 | struct inode *inode = d_inode(path->dentry); |
1c6d8ee4 | 697 | struct f2fs_inode_info *fi = F2FS_I(inode); |
1c1d35df | 698 | struct f2fs_inode *ri; |
1c6d8ee4 CY |
699 | unsigned int flags; |
700 | ||
1c1d35df | 701 | if (f2fs_has_extra_attr(inode) && |
7beb01f7 | 702 | f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && |
1c1d35df CY |
703 | F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { |
704 | stat->result_mask |= STATX_BTIME; | |
705 | stat->btime.tv_sec = fi->i_crtime.tv_sec; | |
706 | stat->btime.tv_nsec = fi->i_crtime.tv_nsec; | |
707 | } | |
708 | ||
c807a7cb | 709 | flags = fi->i_flags & F2FS_FL_USER_VISIBLE; |
59c84408 | 710 | if (flags & F2FS_APPEND_FL) |
1c6d8ee4 | 711 | stat->attributes |= STATX_ATTR_APPEND; |
59c84408 | 712 | if (flags & F2FS_COMPR_FL) |
1c6d8ee4 CY |
713 | stat->attributes |= STATX_ATTR_COMPRESSED; |
714 | if (f2fs_encrypted_inode(inode)) | |
715 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
59c84408 | 716 | if (flags & F2FS_IMMUTABLE_FL) |
1c6d8ee4 | 717 | stat->attributes |= STATX_ATTR_IMMUTABLE; |
59c84408 | 718 | if (flags & F2FS_NODUMP_FL) |
1c6d8ee4 CY |
719 | stat->attributes |= STATX_ATTR_NODUMP; |
720 | ||
721 | stat->attributes_mask |= (STATX_ATTR_APPEND | | |
722 | STATX_ATTR_COMPRESSED | | |
723 | STATX_ATTR_ENCRYPTED | | |
724 | STATX_ATTR_IMMUTABLE | | |
725 | STATX_ATTR_NODUMP); | |
726 | ||
fbfa2cc5 | 727 | generic_fillattr(inode, stat); |
5b4267d1 JK |
728 | |
729 | /* we need to show initial sectors used for inline_data/dentries */ | |
730 | if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || | |
731 | f2fs_has_inline_dentry(inode)) | |
732 | stat->blocks += (stat->size + 511) >> 9; | |
733 | ||
fbfa2cc5 JK |
734 | return 0; |
735 | } | |
736 | ||
737 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
738 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
739 | { | |
fbfa2cc5 JK |
740 | unsigned int ia_valid = attr->ia_valid; |
741 | ||
742 | if (ia_valid & ATTR_UID) | |
743 | inode->i_uid = attr->ia_uid; | |
744 | if (ia_valid & ATTR_GID) | |
745 | inode->i_gid = attr->ia_gid; | |
746 | if (ia_valid & ATTR_ATIME) | |
95582b00 DD |
747 | inode->i_atime = timespec64_trunc(attr->ia_atime, |
748 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 749 | if (ia_valid & ATTR_MTIME) |
95582b00 DD |
750 | inode->i_mtime = timespec64_trunc(attr->ia_mtime, |
751 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 752 | if (ia_valid & ATTR_CTIME) |
95582b00 DD |
753 | inode->i_ctime = timespec64_trunc(attr->ia_ctime, |
754 | inode->i_sb->s_time_gran); | |
fbfa2cc5 JK |
755 | if (ia_valid & ATTR_MODE) { |
756 | umode_t mode = attr->ia_mode; | |
757 | ||
758 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
759 | mode &= ~S_ISGID; | |
91942321 | 760 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
761 | } |
762 | } | |
763 | #else | |
764 | #define __setattr_copy setattr_copy | |
765 | #endif | |
766 | ||
767 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
768 | { | |
2b0143b5 | 769 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 770 | int err; |
c0ed4405 | 771 | bool size_changed = false; |
fbfa2cc5 | 772 | |
1f227a3e JK |
773 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
774 | return -EIO; | |
775 | ||
31051c85 | 776 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
777 | if (err) |
778 | return err; | |
779 | ||
20bb2479 EB |
780 | err = fscrypt_prepare_setattr(dentry, attr); |
781 | if (err) | |
782 | return err; | |
783 | ||
0abd675e CY |
784 | if (is_quota_modification(inode, attr)) { |
785 | err = dquot_initialize(inode); | |
786 | if (err) | |
787 | return err; | |
788 | } | |
789 | if ((attr->ia_valid & ATTR_UID && | |
790 | !uid_eq(attr->ia_uid, inode->i_uid)) || | |
791 | (attr->ia_valid & ATTR_GID && | |
792 | !gid_eq(attr->ia_gid, inode->i_gid))) { | |
af033b2a | 793 | f2fs_lock_op(F2FS_I_SB(inode)); |
0abd675e | 794 | err = dquot_transfer(inode, attr); |
af033b2a CY |
795 | if (err) { |
796 | set_sbi_flag(F2FS_I_SB(inode), | |
797 | SBI_QUOTA_NEED_REPAIR); | |
798 | f2fs_unlock_op(F2FS_I_SB(inode)); | |
0abd675e | 799 | return err; |
af033b2a CY |
800 | } |
801 | /* | |
802 | * update uid/gid under lock_op(), so that dquot and inode can | |
803 | * be updated atomically. | |
804 | */ | |
805 | if (attr->ia_valid & ATTR_UID) | |
806 | inode->i_uid = attr->ia_uid; | |
807 | if (attr->ia_valid & ATTR_GID) | |
808 | inode->i_gid = attr->ia_gid; | |
809 | f2fs_mark_inode_dirty_sync(inode, true); | |
810 | f2fs_unlock_op(F2FS_I_SB(inode)); | |
0abd675e CY |
811 | } |
812 | ||
09db6a2e | 813 | if (attr->ia_valid & ATTR_SIZE) { |
a33c1502 CY |
814 | bool to_smaller = (attr->ia_size <= i_size_read(inode)); |
815 | ||
a33c1502 | 816 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 817 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 CY |
818 | |
819 | truncate_setsize(inode, attr->ia_size); | |
820 | ||
821 | if (to_smaller) | |
9a449e9c | 822 | err = f2fs_truncate(inode); |
a33c1502 CY |
823 | /* |
824 | * do not trim all blocks after i_size if target size is | |
825 | * larger than i_size. | |
826 | */ | |
a33c1502 | 827 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 828 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
a33c1502 CY |
829 | |
830 | if (err) | |
831 | return err; | |
0cab80ee | 832 | |
a33c1502 | 833 | if (!to_smaller) { |
0cab80ee | 834 | /* should convert inline inode here */ |
b9d777b8 | 835 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
836 | err = f2fs_convert_inline_inode(inode); |
837 | if (err) | |
838 | return err; | |
839 | } | |
078cd827 | 840 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 841 | } |
c0ed4405 | 842 | |
a0d00fad CY |
843 | down_write(&F2FS_I(inode)->i_sem); |
844 | F2FS_I(inode)->last_disk_size = i_size_read(inode); | |
845 | up_write(&F2FS_I(inode)->i_sem); | |
846 | ||
c0ed4405 | 847 | size_changed = true; |
fbfa2cc5 JK |
848 | } |
849 | ||
850 | __setattr_copy(inode, attr); | |
851 | ||
852 | if (attr->ia_valid & ATTR_MODE) { | |
4d57b86d | 853 | err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode)); |
91942321 JK |
854 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
855 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
856 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
857 | } |
858 | } | |
859 | ||
c0ed4405 YH |
860 | /* file size may changed here */ |
861 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
862 | |
863 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
864 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
865 | ||
fbfa2cc5 JK |
866 | return err; |
867 | } | |
868 | ||
869 | const struct inode_operations f2fs_file_inode_operations = { | |
870 | .getattr = f2fs_getattr, | |
871 | .setattr = f2fs_setattr, | |
872 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 873 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 874 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 875 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 876 | #endif |
9ab70134 | 877 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
878 | }; |
879 | ||
6394328a | 880 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
881 | loff_t start, loff_t len) |
882 | { | |
4081363f | 883 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
884 | struct page *page; |
885 | ||
886 | if (!len) | |
6394328a | 887 | return 0; |
fbfa2cc5 | 888 | |
2c4db1a6 | 889 | f2fs_balance_fs(sbi, true); |
bd43df02 | 890 | |
e479556b | 891 | f2fs_lock_op(sbi); |
4d57b86d | 892 | page = f2fs_get_new_data_page(inode, NULL, index, false); |
e479556b | 893 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 894 | |
6394328a CY |
895 | if (IS_ERR(page)) |
896 | return PTR_ERR(page); | |
897 | ||
fec1d657 | 898 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
899 | zero_user(page, start, len); |
900 | set_page_dirty(page); | |
901 | f2fs_put_page(page, 1); | |
902 | return 0; | |
fbfa2cc5 JK |
903 | } |
904 | ||
4d57b86d | 905 | int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
fbfa2cc5 | 906 | { |
fbfa2cc5 JK |
907 | int err; |
908 | ||
ea58711e | 909 | while (pg_start < pg_end) { |
fbfa2cc5 | 910 | struct dnode_of_data dn; |
ea58711e | 911 | pgoff_t end_offset, count; |
9eaeba70 | 912 | |
fbfa2cc5 | 913 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 914 | err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 915 | if (err) { |
ea58711e | 916 | if (err == -ENOENT) { |
4d57b86d CY |
917 | pg_start = f2fs_get_next_page_offset(&dn, |
918 | pg_start); | |
fbfa2cc5 | 919 | continue; |
ea58711e | 920 | } |
fbfa2cc5 JK |
921 | return err; |
922 | } | |
923 | ||
81ca7350 | 924 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
925 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
926 | ||
927 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
928 | ||
4d57b86d | 929 | f2fs_truncate_data_blocks_range(&dn, count); |
fbfa2cc5 | 930 | f2fs_put_dnode(&dn); |
ea58711e CY |
931 | |
932 | pg_start += count; | |
fbfa2cc5 JK |
933 | } |
934 | return 0; | |
935 | } | |
936 | ||
a66c7b2f | 937 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
938 | { |
939 | pgoff_t pg_start, pg_end; | |
940 | loff_t off_start, off_end; | |
b9d777b8 | 941 | int ret; |
fbfa2cc5 | 942 | |
b9d777b8 JK |
943 | ret = f2fs_convert_inline_inode(inode); |
944 | if (ret) | |
945 | return ret; | |
9ffe0fb5 | 946 | |
09cbfeaf KS |
947 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
948 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 949 | |
09cbfeaf KS |
950 | off_start = offset & (PAGE_SIZE - 1); |
951 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
952 | |
953 | if (pg_start == pg_end) { | |
6394328a | 954 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 955 | off_end - off_start); |
6394328a CY |
956 | if (ret) |
957 | return ret; | |
fbfa2cc5 | 958 | } else { |
6394328a CY |
959 | if (off_start) { |
960 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 961 | PAGE_SIZE - off_start); |
6394328a CY |
962 | if (ret) |
963 | return ret; | |
964 | } | |
965 | if (off_end) { | |
966 | ret = fill_zero(inode, pg_end, 0, off_end); | |
967 | if (ret) | |
968 | return ret; | |
969 | } | |
fbfa2cc5 JK |
970 | |
971 | if (pg_start < pg_end) { | |
972 | struct address_space *mapping = inode->i_mapping; | |
973 | loff_t blk_start, blk_end; | |
4081363f | 974 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 975 | |
2c4db1a6 | 976 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 977 | |
09cbfeaf KS |
978 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
979 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
a33c1502 | 980 | |
a33c1502 | 981 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 982 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 | 983 | |
fbfa2cc5 JK |
984 | truncate_inode_pages_range(mapping, blk_start, |
985 | blk_end - 1); | |
39936837 | 986 | |
e479556b | 987 | f2fs_lock_op(sbi); |
4d57b86d | 988 | ret = f2fs_truncate_hole(inode, pg_start, pg_end); |
e479556b | 989 | f2fs_unlock_op(sbi); |
a33c1502 | 990 | |
5a3a2d83 | 991 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 992 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
fbfa2cc5 JK |
993 | } |
994 | } | |
995 | ||
fbfa2cc5 JK |
996 | return ret; |
997 | } | |
998 | ||
0a2aa8fb JK |
999 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
1000 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
1001 | { |
1002 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1003 | struct dnode_of_data dn; | |
0a2aa8fb | 1004 | int ret, done, i; |
ecbaa406 | 1005 | |
0a2aa8fb | 1006 | next_dnode: |
6e2c64ad | 1007 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1008 | ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
1009 | if (ret && ret != -ENOENT) { |
1010 | return ret; | |
1011 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
1012 | if (dn.max_level == 0) |
1013 | return -ENOENT; | |
1014 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
1015 | blkaddr += done; | |
1016 | do_replace += done; | |
1017 | goto next; | |
1018 | } | |
1019 | ||
1020 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
1021 | dn.ofs_in_node, len); | |
1022 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
7a2af766 CY |
1023 | *blkaddr = datablock_addr(dn.inode, |
1024 | dn.node_page, dn.ofs_in_node); | |
4d57b86d | 1025 | if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) { |
0a2aa8fb JK |
1026 | |
1027 | if (test_opt(sbi, LFS)) { | |
1028 | f2fs_put_dnode(&dn); | |
1029 | return -ENOTSUPP; | |
1030 | } | |
1031 | ||
6e2c64ad | 1032 | /* do not invalidate this block address */ |
f28b3434 | 1033 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 1034 | *do_replace = 1; |
b4ace337 | 1035 | } |
6e2c64ad | 1036 | } |
0a2aa8fb JK |
1037 | f2fs_put_dnode(&dn); |
1038 | next: | |
1039 | len -= done; | |
1040 | off += done; | |
1041 | if (len) | |
1042 | goto next_dnode; | |
1043 | return 0; | |
1044 | } | |
b4ace337 | 1045 | |
0a2aa8fb JK |
1046 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
1047 | int *do_replace, pgoff_t off, int len) | |
1048 | { | |
1049 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1050 | struct dnode_of_data dn; | |
1051 | int ret, i; | |
b4ace337 | 1052 | |
0a2aa8fb JK |
1053 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
1054 | if (*do_replace == 0) | |
1055 | continue; | |
b4ace337 | 1056 | |
0a2aa8fb | 1057 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1058 | ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); |
0a2aa8fb JK |
1059 | if (ret) { |
1060 | dec_valid_block_count(sbi, inode, 1); | |
4d57b86d | 1061 | f2fs_invalidate_blocks(sbi, *blkaddr); |
0a2aa8fb JK |
1062 | } else { |
1063 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 1064 | } |
0a2aa8fb JK |
1065 | f2fs_put_dnode(&dn); |
1066 | } | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
1071 | block_t *blkaddr, int *do_replace, | |
1072 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
1073 | { | |
1074 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
1075 | pgoff_t i = 0; | |
1076 | int ret; | |
36abef4e | 1077 | |
0a2aa8fb JK |
1078 | while (i < len) { |
1079 | if (blkaddr[i] == NULL_ADDR && !full) { | |
1080 | i++; | |
1081 | continue; | |
6e2c64ad | 1082 | } |
b4ace337 | 1083 | |
0a2aa8fb JK |
1084 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
1085 | struct dnode_of_data dn; | |
1086 | struct node_info ni; | |
1087 | size_t new_size; | |
1088 | pgoff_t ilen; | |
b4ace337 | 1089 | |
0a2aa8fb | 1090 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
4d57b86d | 1091 | ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE); |
0a2aa8fb JK |
1092 | if (ret) |
1093 | return ret; | |
b4ace337 | 1094 | |
7735730d CY |
1095 | ret = f2fs_get_node_info(sbi, dn.nid, &ni); |
1096 | if (ret) { | |
1097 | f2fs_put_dnode(&dn); | |
1098 | return ret; | |
1099 | } | |
1100 | ||
0a2aa8fb JK |
1101 | ilen = min((pgoff_t) |
1102 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
1103 | dn.ofs_in_node, len - i); | |
1104 | do { | |
7a2af766 CY |
1105 | dn.data_blkaddr = datablock_addr(dn.inode, |
1106 | dn.node_page, dn.ofs_in_node); | |
4d57b86d | 1107 | f2fs_truncate_data_blocks_range(&dn, 1); |
0a2aa8fb JK |
1108 | |
1109 | if (do_replace[i]) { | |
1110 | f2fs_i_blocks_write(src_inode, | |
0abd675e | 1111 | 1, false, false); |
0a2aa8fb | 1112 | f2fs_i_blocks_write(dst_inode, |
0abd675e | 1113 | 1, true, false); |
0a2aa8fb JK |
1114 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
1115 | blkaddr[i], ni.version, true, false); | |
1116 | ||
1117 | do_replace[i] = 0; | |
1118 | } | |
1119 | dn.ofs_in_node++; | |
1120 | i++; | |
1121 | new_size = (dst + i) << PAGE_SHIFT; | |
1122 | if (dst_inode->i_size < new_size) | |
1123 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 1124 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1125 | |
0a2aa8fb JK |
1126 | f2fs_put_dnode(&dn); |
1127 | } else { | |
1128 | struct page *psrc, *pdst; | |
1129 | ||
4d57b86d CY |
1130 | psrc = f2fs_get_lock_data_page(src_inode, |
1131 | src + i, true); | |
0a2aa8fb JK |
1132 | if (IS_ERR(psrc)) |
1133 | return PTR_ERR(psrc); | |
4d57b86d | 1134 | pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i, |
0a2aa8fb JK |
1135 | true); |
1136 | if (IS_ERR(pdst)) { | |
1137 | f2fs_put_page(psrc, 1); | |
1138 | return PTR_ERR(pdst); | |
1139 | } | |
1140 | f2fs_copy_page(psrc, pdst); | |
1141 | set_page_dirty(pdst); | |
1142 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1143 | f2fs_put_page(psrc, 1); |
b4ace337 | 1144 | |
4d57b86d CY |
1145 | ret = f2fs_truncate_hole(src_inode, |
1146 | src + i, src + i + 1); | |
0a2aa8fb JK |
1147 | if (ret) |
1148 | return ret; | |
1149 | i++; | |
1150 | } | |
6e2c64ad JK |
1151 | } |
1152 | return 0; | |
0a2aa8fb | 1153 | } |
b4ace337 | 1154 | |
0a2aa8fb JK |
1155 | static int __exchange_data_block(struct inode *src_inode, |
1156 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1157 | pgoff_t len, bool full) |
0a2aa8fb JK |
1158 | { |
1159 | block_t *src_blkaddr; | |
1160 | int *do_replace; | |
363cad7f | 1161 | pgoff_t olen; |
0a2aa8fb JK |
1162 | int ret; |
1163 | ||
363cad7f JK |
1164 | while (len) { |
1165 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1166 | |
628b3d14 | 1167 | src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
9d2a789c KC |
1168 | array_size(olen, sizeof(block_t)), |
1169 | GFP_KERNEL); | |
363cad7f JK |
1170 | if (!src_blkaddr) |
1171 | return -ENOMEM; | |
0a2aa8fb | 1172 | |
628b3d14 | 1173 | do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
9d2a789c KC |
1174 | array_size(olen, sizeof(int)), |
1175 | GFP_KERNEL); | |
363cad7f JK |
1176 | if (!do_replace) { |
1177 | kvfree(src_blkaddr); | |
1178 | return -ENOMEM; | |
1179 | } | |
0a2aa8fb | 1180 | |
363cad7f JK |
1181 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1182 | do_replace, src, olen); | |
1183 | if (ret) | |
1184 | goto roll_back; | |
0a2aa8fb | 1185 | |
363cad7f JK |
1186 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1187 | do_replace, src, dst, olen, full); | |
1188 | if (ret) | |
1189 | goto roll_back; | |
1190 | ||
1191 | src += olen; | |
1192 | dst += olen; | |
1193 | len -= olen; | |
1194 | ||
1195 | kvfree(src_blkaddr); | |
1196 | kvfree(do_replace); | |
1197 | } | |
0a2aa8fb JK |
1198 | return 0; |
1199 | ||
1200 | roll_back: | |
9fd62605 | 1201 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen); |
0a2aa8fb JK |
1202 | kvfree(src_blkaddr); |
1203 | kvfree(do_replace); | |
6e2c64ad JK |
1204 | return ret; |
1205 | } | |
b4ace337 | 1206 | |
6f8d4455 | 1207 | static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len) |
6e2c64ad JK |
1208 | { |
1209 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1210 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
6f8d4455 JK |
1211 | pgoff_t start = offset >> PAGE_SHIFT; |
1212 | pgoff_t end = (offset + len) >> PAGE_SHIFT; | |
0a2aa8fb | 1213 | int ret; |
6e2c64ad | 1214 | |
0a2aa8fb | 1215 | f2fs_balance_fs(sbi, true); |
5f281fab | 1216 | |
6f8d4455 JK |
1217 | /* avoid gc operation during block exchange */ |
1218 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
1219 | down_write(&F2FS_I(inode)->i_mmap_sem); | |
5f281fab | 1220 | |
6f8d4455 JK |
1221 | f2fs_lock_op(sbi); |
1222 | f2fs_drop_extent_tree(inode); | |
1223 | truncate_pagecache(inode, offset); | |
0a2aa8fb JK |
1224 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1225 | f2fs_unlock_op(sbi); | |
6f8d4455 JK |
1226 | |
1227 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
1228 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
b4ace337 CY |
1229 | return ret; |
1230 | } | |
1231 | ||
1232 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1233 | { | |
b4ace337 CY |
1234 | loff_t new_size; |
1235 | int ret; | |
1236 | ||
b4ace337 CY |
1237 | if (offset + len >= i_size_read(inode)) |
1238 | return -EINVAL; | |
1239 | ||
1240 | /* collapse range should be aligned to block size of f2fs. */ | |
1241 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1242 | return -EINVAL; | |
1243 | ||
b9d777b8 JK |
1244 | ret = f2fs_convert_inline_inode(inode); |
1245 | if (ret) | |
1246 | return ret; | |
97a7b2c2 | 1247 | |
b4ace337 CY |
1248 | /* write out all dirty pages from offset */ |
1249 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1250 | if (ret) | |
6f8d4455 | 1251 | return ret; |
b4ace337 | 1252 | |
6f8d4455 | 1253 | ret = f2fs_do_collapse(inode, offset, len); |
b4ace337 | 1254 | if (ret) |
6f8d4455 | 1255 | return ret; |
b4ace337 | 1256 | |
6e2c64ad | 1257 | /* write out all moved pages, if possible */ |
6f8d4455 | 1258 | down_write(&F2FS_I(inode)->i_mmap_sem); |
6e2c64ad JK |
1259 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
1260 | truncate_pagecache(inode, offset); | |
1261 | ||
b4ace337 | 1262 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1263 | truncate_pagecache(inode, new_size); |
b4ace337 | 1264 | |
af033b2a | 1265 | ret = f2fs_truncate_blocks(inode, new_size, true, false); |
6f8d4455 | 1266 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 | 1267 | if (!ret) |
fc9581c8 | 1268 | f2fs_i_size_write(inode, new_size); |
b4ace337 CY |
1269 | return ret; |
1270 | } | |
1271 | ||
6e961949 CY |
1272 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1273 | pgoff_t end) | |
1274 | { | |
1275 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1276 | pgoff_t index = start; | |
1277 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1278 | blkcnt_t count = 0; | |
1279 | int ret; | |
1280 | ||
1281 | for (; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1282 | if (datablock_addr(dn->inode, dn->node_page, |
1283 | dn->ofs_in_node) == NULL_ADDR) | |
6e961949 CY |
1284 | count++; |
1285 | } | |
1286 | ||
1287 | dn->ofs_in_node = ofs_in_node; | |
4d57b86d | 1288 | ret = f2fs_reserve_new_blocks(dn, count); |
6e961949 CY |
1289 | if (ret) |
1290 | return ret; | |
1291 | ||
1292 | dn->ofs_in_node = ofs_in_node; | |
1293 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1294 | dn->data_blkaddr = datablock_addr(dn->inode, |
1295 | dn->node_page, dn->ofs_in_node); | |
6e961949 | 1296 | /* |
4d57b86d | 1297 | * f2fs_reserve_new_blocks will not guarantee entire block |
6e961949 CY |
1298 | * allocation. |
1299 | */ | |
1300 | if (dn->data_blkaddr == NULL_ADDR) { | |
1301 | ret = -ENOSPC; | |
1302 | break; | |
1303 | } | |
1304 | if (dn->data_blkaddr != NEW_ADDR) { | |
4d57b86d | 1305 | f2fs_invalidate_blocks(sbi, dn->data_blkaddr); |
6e961949 | 1306 | dn->data_blkaddr = NEW_ADDR; |
4d57b86d | 1307 | f2fs_set_data_blkaddr(dn); |
6e961949 CY |
1308 | } |
1309 | } | |
1310 | ||
1311 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1312 | ||
1313 | return ret; | |
1314 | } | |
1315 | ||
75cd4e09 CY |
1316 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1317 | int mode) | |
1318 | { | |
1319 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1320 | struct address_space *mapping = inode->i_mapping; | |
1321 | pgoff_t index, pg_start, pg_end; | |
1322 | loff_t new_size = i_size_read(inode); | |
1323 | loff_t off_start, off_end; | |
1324 | int ret = 0; | |
1325 | ||
75cd4e09 CY |
1326 | ret = inode_newsize_ok(inode, (len + offset)); |
1327 | if (ret) | |
1328 | return ret; | |
1329 | ||
b9d777b8 JK |
1330 | ret = f2fs_convert_inline_inode(inode); |
1331 | if (ret) | |
1332 | return ret; | |
75cd4e09 CY |
1333 | |
1334 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1335 | if (ret) | |
6f8d4455 | 1336 | return ret; |
75cd4e09 | 1337 | |
09cbfeaf KS |
1338 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1339 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1340 | |
09cbfeaf KS |
1341 | off_start = offset & (PAGE_SIZE - 1); |
1342 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1343 | |
1344 | if (pg_start == pg_end) { | |
6394328a CY |
1345 | ret = fill_zero(inode, pg_start, off_start, |
1346 | off_end - off_start); | |
1347 | if (ret) | |
6f8d4455 | 1348 | return ret; |
6394328a | 1349 | |
75cd4e09 CY |
1350 | new_size = max_t(loff_t, new_size, offset + len); |
1351 | } else { | |
1352 | if (off_start) { | |
6394328a | 1353 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1354 | PAGE_SIZE - off_start); |
6394328a | 1355 | if (ret) |
6f8d4455 | 1356 | return ret; |
6394328a | 1357 | |
75cd4e09 | 1358 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1359 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1360 | } |
1361 | ||
6e961949 | 1362 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1363 | struct dnode_of_data dn; |
6e961949 CY |
1364 | unsigned int end_offset; |
1365 | pgoff_t end; | |
75cd4e09 | 1366 | |
c7079853 | 1367 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 1368 | down_write(&F2FS_I(inode)->i_mmap_sem); |
c7079853 CY |
1369 | |
1370 | truncate_pagecache_range(inode, | |
1371 | (loff_t)index << PAGE_SHIFT, | |
1372 | ((loff_t)pg_end << PAGE_SHIFT) - 1); | |
1373 | ||
75cd4e09 CY |
1374 | f2fs_lock_op(sbi); |
1375 | ||
6e961949 | 1376 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1377 | ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE); |
75cd4e09 CY |
1378 | if (ret) { |
1379 | f2fs_unlock_op(sbi); | |
6f8d4455 | 1380 | up_write(&F2FS_I(inode)->i_mmap_sem); |
c7079853 | 1381 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
75cd4e09 CY |
1382 | goto out; |
1383 | } | |
1384 | ||
6e961949 CY |
1385 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1386 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1387 | ||
1388 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 | 1389 | f2fs_put_dnode(&dn); |
c7079853 | 1390 | |
75cd4e09 | 1391 | f2fs_unlock_op(sbi); |
6f8d4455 | 1392 | up_write(&F2FS_I(inode)->i_mmap_sem); |
c7079853 | 1393 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
9434fcde CY |
1394 | |
1395 | f2fs_balance_fs(sbi, dn.node_changed); | |
1396 | ||
6e961949 CY |
1397 | if (ret) |
1398 | goto out; | |
75cd4e09 | 1399 | |
6e961949 | 1400 | index = end; |
75cd4e09 | 1401 | new_size = max_t(loff_t, new_size, |
6e961949 | 1402 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1403 | } |
1404 | ||
1405 | if (off_end) { | |
6394328a CY |
1406 | ret = fill_zero(inode, pg_end, 0, off_end); |
1407 | if (ret) | |
1408 | goto out; | |
1409 | ||
75cd4e09 CY |
1410 | new_size = max_t(loff_t, new_size, offset + len); |
1411 | } | |
1412 | } | |
1413 | ||
1414 | out: | |
17cd07ae CY |
1415 | if (new_size > i_size_read(inode)) { |
1416 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1417 | file_set_keep_isize(inode); | |
1418 | else | |
1419 | f2fs_i_size_write(inode, new_size); | |
1420 | } | |
75cd4e09 CY |
1421 | return ret; |
1422 | } | |
1423 | ||
f62185d0 CY |
1424 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1425 | { | |
1426 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1427 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1428 | loff_t new_size; |
6e2c64ad | 1429 | int ret = 0; |
f62185d0 | 1430 | |
f62185d0 | 1431 | new_size = i_size_read(inode) + len; |
46e82fb1 KM |
1432 | ret = inode_newsize_ok(inode, new_size); |
1433 | if (ret) | |
1434 | return ret; | |
f62185d0 CY |
1435 | |
1436 | if (offset >= i_size_read(inode)) | |
1437 | return -EINVAL; | |
1438 | ||
1439 | /* insert range should be aligned to block size of f2fs. */ | |
1440 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1441 | return -EINVAL; | |
1442 | ||
b9d777b8 JK |
1443 | ret = f2fs_convert_inline_inode(inode); |
1444 | if (ret) | |
1445 | return ret; | |
97a7b2c2 | 1446 | |
2c4db1a6 | 1447 | f2fs_balance_fs(sbi, true); |
2a340760 | 1448 | |
5a3a2d83 | 1449 | down_write(&F2FS_I(inode)->i_mmap_sem); |
af033b2a | 1450 | ret = f2fs_truncate_blocks(inode, i_size_read(inode), true, false); |
6f8d4455 | 1451 | up_write(&F2FS_I(inode)->i_mmap_sem); |
f62185d0 | 1452 | if (ret) |
6f8d4455 | 1453 | return ret; |
f62185d0 CY |
1454 | |
1455 | /* write out all dirty pages from offset */ | |
1456 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1457 | if (ret) | |
6f8d4455 | 1458 | return ret; |
f62185d0 | 1459 | |
09cbfeaf KS |
1460 | pg_start = offset >> PAGE_SHIFT; |
1461 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1462 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1463 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1464 | ||
6f8d4455 JK |
1465 | /* avoid gc operation during block exchange */ |
1466 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
1467 | down_write(&F2FS_I(inode)->i_mmap_sem); | |
1468 | truncate_pagecache(inode, offset); | |
1469 | ||
0a2aa8fb JK |
1470 | while (!ret && idx > pg_start) { |
1471 | nr = idx - pg_start; | |
1472 | if (nr > delta) | |
1473 | nr = delta; | |
1474 | idx -= nr; | |
f62185d0 | 1475 | |
f62185d0 | 1476 | f2fs_lock_op(sbi); |
5f281fab JK |
1477 | f2fs_drop_extent_tree(inode); |
1478 | ||
0a2aa8fb JK |
1479 | ret = __exchange_data_block(inode, inode, idx, |
1480 | idx + delta, nr, false); | |
f62185d0 CY |
1481 | f2fs_unlock_op(sbi); |
1482 | } | |
6f8d4455 JK |
1483 | up_write(&F2FS_I(inode)->i_mmap_sem); |
1484 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
f62185d0 | 1485 | |
6e2c64ad | 1486 | /* write out all moved pages, if possible */ |
6f8d4455 | 1487 | down_write(&F2FS_I(inode)->i_mmap_sem); |
6e2c64ad JK |
1488 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
1489 | truncate_pagecache(inode, offset); | |
6f8d4455 | 1490 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6e2c64ad JK |
1491 | |
1492 | if (!ret) | |
fc9581c8 | 1493 | f2fs_i_size_write(inode, new_size); |
f62185d0 CY |
1494 | return ret; |
1495 | } | |
1496 | ||
fbfa2cc5 JK |
1497 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1498 | loff_t len, int mode) | |
1499 | { | |
4081363f | 1500 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
d5097be5 | 1501 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL, |
f9d6d059 CY |
1502 | .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE, |
1503 | .m_may_create = true }; | |
e12dd7bd | 1504 | pgoff_t pg_end; |
fbfa2cc5 | 1505 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1506 | loff_t off_end; |
a7de6086 | 1507 | int err; |
fbfa2cc5 | 1508 | |
a7de6086 JK |
1509 | err = inode_newsize_ok(inode, (len + offset)); |
1510 | if (err) | |
1511 | return err; | |
fbfa2cc5 | 1512 | |
a7de6086 JK |
1513 | err = f2fs_convert_inline_inode(inode); |
1514 | if (err) | |
1515 | return err; | |
9e09fc85 | 1516 | |
2c4db1a6 | 1517 | f2fs_balance_fs(sbi, true); |
2a340760 | 1518 | |
e12dd7bd | 1519 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1520 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1521 | |
e12dd7bd JK |
1522 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1523 | map.m_len = pg_end - map.m_lblk; | |
1524 | if (off_end) | |
1525 | map.m_len++; | |
ead43275 | 1526 | |
a7de6086 JK |
1527 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1528 | if (err) { | |
e12dd7bd | 1529 | pgoff_t last_off; |
fbfa2cc5 | 1530 | |
e12dd7bd | 1531 | if (!map.m_len) |
a7de6086 | 1532 | return err; |
98397ff3 | 1533 | |
e12dd7bd JK |
1534 | last_off = map.m_lblk + map.m_len - 1; |
1535 | ||
1536 | /* update new size to the failed position */ | |
1061fd48 | 1537 | new_size = (last_off == pg_end) ? offset + len : |
e12dd7bd JK |
1538 | (loff_t)(last_off + 1) << PAGE_SHIFT; |
1539 | } else { | |
1540 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1541 | } |
1542 | ||
e8ed90a6 CY |
1543 | if (new_size > i_size_read(inode)) { |
1544 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1545 | file_set_keep_isize(inode); | |
1546 | else | |
1547 | f2fs_i_size_write(inode, new_size); | |
1548 | } | |
fbfa2cc5 | 1549 | |
a7de6086 | 1550 | return err; |
fbfa2cc5 JK |
1551 | } |
1552 | ||
1553 | static long f2fs_fallocate(struct file *file, int mode, | |
1554 | loff_t offset, loff_t len) | |
1555 | { | |
6131ffaa | 1556 | struct inode *inode = file_inode(file); |
587c0a42 | 1557 | long ret = 0; |
fbfa2cc5 | 1558 | |
1f227a3e JK |
1559 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
1560 | return -EIO; | |
1561 | ||
c998012b CY |
1562 | /* f2fs only support ->fallocate for regular file */ |
1563 | if (!S_ISREG(inode->i_mode)) | |
1564 | return -EINVAL; | |
1565 | ||
f62185d0 CY |
1566 | if (f2fs_encrypted_inode(inode) && |
1567 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1568 | return -EOPNOTSUPP; |
1569 | ||
b4ace337 | 1570 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1571 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1572 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1573 | return -EOPNOTSUPP; |
1574 | ||
5955102c | 1575 | inode_lock(inode); |
3375f696 | 1576 | |
587c0a42 TY |
1577 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1578 | if (offset >= inode->i_size) | |
1579 | goto out; | |
1580 | ||
a66c7b2f | 1581 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1582 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1583 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1584 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1585 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1586 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1587 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1588 | } else { |
fbfa2cc5 | 1589 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1590 | } |
fbfa2cc5 | 1591 | |
3af60a49 | 1592 | if (!ret) { |
078cd827 | 1593 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1594 | f2fs_mark_inode_dirty_sync(inode, false); |
d0239e1b | 1595 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1596 | } |
3375f696 | 1597 | |
587c0a42 | 1598 | out: |
5955102c | 1599 | inode_unlock(inode); |
3375f696 | 1600 | |
c01e2853 | 1601 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1602 | return ret; |
1603 | } | |
1604 | ||
1e84371f JK |
1605 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1606 | { | |
de5307e4 JK |
1607 | /* |
1608 | * f2fs_relase_file is called at every close calls. So we should | |
1609 | * not drop any inmemory pages by close called by other process. | |
1610 | */ | |
1611 | if (!(filp->f_mode & FMODE_WRITE) || | |
1612 | atomic_read(&inode->i_writecount) != 1) | |
1613 | return 0; | |
1614 | ||
1e84371f JK |
1615 | /* some remained atomic pages should discarded */ |
1616 | if (f2fs_is_atomic_file(inode)) | |
4d57b86d | 1617 | f2fs_drop_inmem_pages(inode); |
1e84371f | 1618 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1619 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1620 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1621 | clear_inode_flag(inode, FI_DROP_CACHE); |
dfa74280 CY |
1622 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1623 | stat_dec_volatile_write(inode); | |
1e84371f JK |
1624 | } |
1625 | return 0; | |
1626 | } | |
1627 | ||
7a10f017 | 1628 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
fbfa2cc5 | 1629 | { |
7a10f017 JK |
1630 | struct inode *inode = file_inode(file); |
1631 | ||
1632 | /* | |
1633 | * If the process doing a transaction is crashed, we should do | |
1634 | * roll-back. Otherwise, other reader/write can see corrupted database | |
1635 | * until all the writers close its file. Since this should be done | |
1636 | * before dropping file lock, it needs to do in ->flush. | |
1637 | */ | |
1638 | if (f2fs_is_atomic_file(inode) && | |
1639 | F2FS_I(inode)->inmem_task == current) | |
4d57b86d | 1640 | f2fs_drop_inmem_pages(inode); |
7a10f017 | 1641 | return 0; |
fbfa2cc5 JK |
1642 | } |
1643 | ||
52656e6c | 1644 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1645 | { |
6131ffaa | 1646 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1647 | struct f2fs_inode_info *fi = F2FS_I(inode); |
76481158 CY |
1648 | unsigned int flags = fi->i_flags; |
1649 | ||
5b72d5e0 | 1650 | if (f2fs_encrypted_inode(inode)) |
76481158 CY |
1651 | flags |= F2FS_ENCRYPT_FL; |
1652 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) | |
1653 | flags |= F2FS_INLINE_DATA_FL; | |
1654 | ||
1655 | flags &= F2FS_FL_USER_VISIBLE; | |
1656 | ||
52656e6c JK |
1657 | return put_user(flags, (int __user *)arg); |
1658 | } | |
fbfa2cc5 | 1659 | |
2c1d0305 CY |
1660 | static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags) |
1661 | { | |
1662 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1663 | unsigned int oldflags; | |
1664 | ||
1665 | /* Is it quota file? Do not allow user to mess with it */ | |
1666 | if (IS_NOQUOTA(inode)) | |
1667 | return -EPERM; | |
1668 | ||
1669 | flags = f2fs_mask_flags(inode->i_mode, flags); | |
1670 | ||
1671 | oldflags = fi->i_flags; | |
1672 | ||
59c84408 | 1673 | if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) |
2c1d0305 CY |
1674 | if (!capable(CAP_LINUX_IMMUTABLE)) |
1675 | return -EPERM; | |
1676 | ||
c807a7cb CY |
1677 | flags = flags & F2FS_FL_USER_MODIFIABLE; |
1678 | flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE; | |
2c1d0305 CY |
1679 | fi->i_flags = flags; |
1680 | ||
59c84408 | 1681 | if (fi->i_flags & F2FS_PROJINHERIT_FL) |
2c1d0305 CY |
1682 | set_inode_flag(inode, FI_PROJ_INHERIT); |
1683 | else | |
1684 | clear_inode_flag(inode, FI_PROJ_INHERIT); | |
1685 | ||
1686 | inode->i_ctime = current_time(inode); | |
1687 | f2fs_set_inode_flags(inode); | |
1688 | f2fs_mark_inode_dirty_sync(inode, false); | |
1689 | return 0; | |
1690 | } | |
1691 | ||
52656e6c JK |
1692 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1693 | { | |
1694 | struct inode *inode = file_inode(filp); | |
69494229 | 1695 | unsigned int flags; |
52656e6c | 1696 | int ret; |
fbfa2cc5 | 1697 | |
7fb17fe4 CY |
1698 | if (!inode_owner_or_capable(inode)) |
1699 | return -EACCES; | |
1700 | ||
1701 | if (get_user(flags, (int __user *)arg)) | |
1702 | return -EFAULT; | |
1703 | ||
52656e6c JK |
1704 | ret = mnt_want_write_file(filp); |
1705 | if (ret) | |
1706 | return ret; | |
fbfa2cc5 | 1707 | |
5955102c | 1708 | inode_lock(inode); |
fbfa2cc5 | 1709 | |
2c1d0305 | 1710 | ret = __f2fs_ioc_setflags(inode, flags); |
fbfa2cc5 | 1711 | |
a72d4b97 | 1712 | inode_unlock(inode); |
52656e6c JK |
1713 | mnt_drop_write_file(filp); |
1714 | return ret; | |
1715 | } | |
4b2fecc8 | 1716 | |
d49f3e89 CY |
1717 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1718 | { | |
1719 | struct inode *inode = file_inode(filp); | |
1720 | ||
1721 | return put_user(inode->i_generation, (int __user *)arg); | |
1722 | } | |
1723 | ||
88b88a66 JK |
1724 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1725 | { | |
1726 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1727 | int ret; |
88b88a66 JK |
1728 | |
1729 | if (!inode_owner_or_capable(inode)) | |
1730 | return -EACCES; | |
1731 | ||
e811898c JK |
1732 | if (!S_ISREG(inode->i_mode)) |
1733 | return -EINVAL; | |
1734 | ||
7fb17fe4 CY |
1735 | ret = mnt_want_write_file(filp); |
1736 | if (ret) | |
1737 | return ret; | |
1738 | ||
0fac558b CY |
1739 | inode_lock(inode); |
1740 | ||
455e3a58 JK |
1741 | if (f2fs_is_atomic_file(inode)) { |
1742 | if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) | |
1743 | ret = -EINVAL; | |
7fb17fe4 | 1744 | goto out; |
455e3a58 | 1745 | } |
88b88a66 | 1746 | |
f4c9c743 CY |
1747 | ret = f2fs_convert_inline_inode(inode); |
1748 | if (ret) | |
7fb17fe4 | 1749 | goto out; |
88b88a66 | 1750 | |
6f8d4455 JK |
1751 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
1752 | ||
c27753d6 | 1753 | if (!get_dirty_pages(inode)) |
054afda9 | 1754 | goto skip_flush; |
c27753d6 JK |
1755 | |
1756 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1757 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1758 | inode->i_ino, get_dirty_pages(inode)); |
1759 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
6f8d4455 JK |
1760 | if (ret) { |
1761 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
684ca7e5 | 1762 | goto out; |
6f8d4455 | 1763 | } |
054afda9 | 1764 | skip_flush: |
054afda9 | 1765 | set_inode_flag(inode, FI_ATOMIC_FILE); |
2ef79ecb | 1766 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
6f8d4455 | 1767 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
684ca7e5 | 1768 | |
6f8d4455 | 1769 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7a10f017 | 1770 | F2FS_I(inode)->inmem_task = current; |
26a28a0c JK |
1771 | stat_inc_atomic_write(inode); |
1772 | stat_update_max_atomic_write(inode); | |
684ca7e5 | 1773 | out: |
0fac558b | 1774 | inode_unlock(inode); |
7fb17fe4 | 1775 | mnt_drop_write_file(filp); |
c27753d6 | 1776 | return ret; |
88b88a66 JK |
1777 | } |
1778 | ||
1779 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1780 | { | |
1781 | struct inode *inode = file_inode(filp); | |
1782 | int ret; | |
1783 | ||
1784 | if (!inode_owner_or_capable(inode)) | |
1785 | return -EACCES; | |
1786 | ||
1787 | ret = mnt_want_write_file(filp); | |
1788 | if (ret) | |
1789 | return ret; | |
1790 | ||
6f8d4455 | 1791 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
0fac558b | 1792 | |
6f8d4455 | 1793 | inode_lock(inode); |
1dc0f899 | 1794 | |
b169c3c5 CY |
1795 | if (f2fs_is_volatile_file(inode)) { |
1796 | ret = -EINVAL; | |
7fb17fe4 | 1797 | goto err_out; |
b169c3c5 | 1798 | } |
7fb17fe4 | 1799 | |
6282adbf | 1800 | if (f2fs_is_atomic_file(inode)) { |
4d57b86d | 1801 | ret = f2fs_commit_inmem_pages(inode); |
5fe45743 | 1802 | if (ret) |
edb27dee | 1803 | goto err_out; |
5fe45743 | 1804 | |
26a28a0c | 1805 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1806 | if (!ret) { |
1807 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
2ef79ecb | 1808 | F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0; |
5fe45743 | 1809 | stat_dec_atomic_write(inode); |
447135a8 | 1810 | } |
26a28a0c | 1811 | } else { |
774e1b78 | 1812 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
6282adbf | 1813 | } |
edb27dee | 1814 | err_out: |
2ef79ecb CY |
1815 | if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { |
1816 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); | |
1817 | ret = -EINVAL; | |
1818 | } | |
0fac558b | 1819 | inode_unlock(inode); |
88b88a66 JK |
1820 | mnt_drop_write_file(filp); |
1821 | return ret; | |
1822 | } | |
1823 | ||
02a1335f JK |
1824 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1825 | { | |
1826 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1827 | int ret; |
02a1335f JK |
1828 | |
1829 | if (!inode_owner_or_capable(inode)) | |
1830 | return -EACCES; | |
1831 | ||
8ff0971f CY |
1832 | if (!S_ISREG(inode->i_mode)) |
1833 | return -EINVAL; | |
1834 | ||
7fb17fe4 CY |
1835 | ret = mnt_want_write_file(filp); |
1836 | if (ret) | |
1837 | return ret; | |
1838 | ||
0fac558b CY |
1839 | inode_lock(inode); |
1840 | ||
1e84371f | 1841 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1842 | goto out; |
1e84371f | 1843 | |
f4c9c743 CY |
1844 | ret = f2fs_convert_inline_inode(inode); |
1845 | if (ret) | |
7fb17fe4 | 1846 | goto out; |
b3d208f9 | 1847 | |
648d50ba CY |
1848 | stat_inc_volatile_write(inode); |
1849 | stat_update_max_volatile_write(inode); | |
1850 | ||
91942321 | 1851 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1852 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1853 | out: |
0fac558b | 1854 | inode_unlock(inode); |
7fb17fe4 CY |
1855 | mnt_drop_write_file(filp); |
1856 | return ret; | |
02a1335f JK |
1857 | } |
1858 | ||
1e84371f JK |
1859 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1860 | { | |
1861 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1862 | int ret; |
1e84371f JK |
1863 | |
1864 | if (!inode_owner_or_capable(inode)) | |
1865 | return -EACCES; | |
1866 | ||
7fb17fe4 CY |
1867 | ret = mnt_want_write_file(filp); |
1868 | if (ret) | |
1869 | return ret; | |
1870 | ||
0fac558b CY |
1871 | inode_lock(inode); |
1872 | ||
1e84371f | 1873 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1874 | goto out; |
1e84371f | 1875 | |
7fb17fe4 CY |
1876 | if (!f2fs_is_first_block_written(inode)) { |
1877 | ret = truncate_partial_data_page(inode, 0, true); | |
1878 | goto out; | |
1879 | } | |
3c6c2beb | 1880 | |
7fb17fe4 CY |
1881 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1882 | out: | |
0fac558b | 1883 | inode_unlock(inode); |
7fb17fe4 CY |
1884 | mnt_drop_write_file(filp); |
1885 | return ret; | |
1e84371f JK |
1886 | } |
1887 | ||
1888 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1889 | { | |
1890 | struct inode *inode = file_inode(filp); | |
1891 | int ret; | |
1892 | ||
1893 | if (!inode_owner_or_capable(inode)) | |
1894 | return -EACCES; | |
1895 | ||
1896 | ret = mnt_want_write_file(filp); | |
1897 | if (ret) | |
1898 | return ret; | |
1899 | ||
0fac558b CY |
1900 | inode_lock(inode); |
1901 | ||
26dc3d44 | 1902 | if (f2fs_is_atomic_file(inode)) |
4d57b86d | 1903 | f2fs_drop_inmem_pages(inode); |
732d5648 | 1904 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1905 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1906 | stat_dec_volatile_write(inode); |
608514de | 1907 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1908 | } |
de6a8ec9 | 1909 | |
455e3a58 JK |
1910 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
1911 | ||
0fac558b CY |
1912 | inode_unlock(inode); |
1913 | ||
1e84371f | 1914 | mnt_drop_write_file(filp); |
d0239e1b | 1915 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1916 | return ret; |
1917 | } | |
1918 | ||
1abff93d JK |
1919 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1920 | { | |
1921 | struct inode *inode = file_inode(filp); | |
1922 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1923 | struct super_block *sb = sbi->sb; | |
1924 | __u32 in; | |
2a96d8ad | 1925 | int ret = 0; |
1abff93d JK |
1926 | |
1927 | if (!capable(CAP_SYS_ADMIN)) | |
1928 | return -EPERM; | |
1929 | ||
1930 | if (get_user(in, (__u32 __user *)arg)) | |
1931 | return -EFAULT; | |
1932 | ||
60b2b4ee ST |
1933 | if (in != F2FS_GOING_DOWN_FULLSYNC) { |
1934 | ret = mnt_want_write_file(filp); | |
1935 | if (ret) | |
1936 | return ret; | |
1937 | } | |
7fb17fe4 | 1938 | |
1abff93d JK |
1939 | switch (in) { |
1940 | case F2FS_GOING_DOWN_FULLSYNC: | |
1941 | sb = freeze_bdev(sb->s_bdev); | |
d027c484 CY |
1942 | if (IS_ERR(sb)) { |
1943 | ret = PTR_ERR(sb); | |
1944 | goto out; | |
1945 | } | |
1946 | if (sb) { | |
38f91ca8 | 1947 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1948 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d JK |
1949 | thaw_bdev(sb->s_bdev, sb); |
1950 | } | |
1951 | break; | |
1952 | case F2FS_GOING_DOWN_METASYNC: | |
1953 | /* do checkpoint only */ | |
d027c484 CY |
1954 | ret = f2fs_sync_fs(sb, 1); |
1955 | if (ret) | |
1956 | goto out; | |
38f91ca8 | 1957 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1958 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d JK |
1959 | break; |
1960 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1961 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1962 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d | 1963 | break; |
c912a829 | 1964 | case F2FS_GOING_DOWN_METAFLUSH: |
4d57b86d | 1965 | f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); |
38f91ca8 | 1966 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1967 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
c912a829 | 1968 | break; |
0cd6d9b0 JK |
1969 | case F2FS_GOING_DOWN_NEED_FSCK: |
1970 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
1971 | /* do checkpoint only */ | |
1972 | ret = f2fs_sync_fs(sb, 1); | |
1973 | if (ret) | |
1974 | goto out; | |
1975 | break; | |
1abff93d | 1976 | default: |
7fb17fe4 CY |
1977 | ret = -EINVAL; |
1978 | goto out; | |
1abff93d | 1979 | } |
7950e9ac | 1980 | |
4d57b86d CY |
1981 | f2fs_stop_gc_thread(sbi); |
1982 | f2fs_stop_discard_thread(sbi); | |
7950e9ac | 1983 | |
4d57b86d | 1984 | f2fs_drop_discard_cmd(sbi); |
7950e9ac CY |
1985 | clear_opt(sbi, DISCARD); |
1986 | ||
d0239e1b | 1987 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 | 1988 | out: |
60b2b4ee ST |
1989 | if (in != F2FS_GOING_DOWN_FULLSYNC) |
1990 | mnt_drop_write_file(filp); | |
7fb17fe4 | 1991 | return ret; |
1abff93d JK |
1992 | } |
1993 | ||
52656e6c JK |
1994 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1995 | { | |
1996 | struct inode *inode = file_inode(filp); | |
1997 | struct super_block *sb = inode->i_sb; | |
1998 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1999 | struct fstrim_range range; | |
2000 | int ret; | |
4b2fecc8 | 2001 | |
52656e6c JK |
2002 | if (!capable(CAP_SYS_ADMIN)) |
2003 | return -EPERM; | |
4b2fecc8 | 2004 | |
7d20c8ab | 2005 | if (!f2fs_hw_support_discard(F2FS_SB(sb))) |
52656e6c | 2006 | return -EOPNOTSUPP; |
4b2fecc8 | 2007 | |
52656e6c JK |
2008 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
2009 | sizeof(range))) | |
2010 | return -EFAULT; | |
4b2fecc8 | 2011 | |
7fb17fe4 CY |
2012 | ret = mnt_want_write_file(filp); |
2013 | if (ret) | |
2014 | return ret; | |
2015 | ||
52656e6c JK |
2016 | range.minlen = max((unsigned int)range.minlen, |
2017 | q->limits.discard_granularity); | |
2018 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 2019 | mnt_drop_write_file(filp); |
52656e6c JK |
2020 | if (ret < 0) |
2021 | return ret; | |
4b2fecc8 | 2022 | |
52656e6c JK |
2023 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
2024 | sizeof(range))) | |
2025 | return -EFAULT; | |
d0239e1b | 2026 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
2027 | return 0; |
2028 | } | |
2029 | ||
f424f664 JK |
2030 | static bool uuid_is_nonzero(__u8 u[16]) |
2031 | { | |
2032 | int i; | |
2033 | ||
2034 | for (i = 0; i < 16; i++) | |
2035 | if (u[i]) | |
2036 | return true; | |
2037 | return false; | |
2038 | } | |
2039 | ||
2040 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
2041 | { | |
f424f664 JK |
2042 | struct inode *inode = file_inode(filp); |
2043 | ||
7beb01f7 | 2044 | if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode))) |
ead710b7 CY |
2045 | return -EOPNOTSUPP; |
2046 | ||
d0239e1b | 2047 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 2048 | |
db717d8e | 2049 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
2050 | } |
2051 | ||
2052 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
2053 | { | |
7beb01f7 | 2054 | if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) |
ead710b7 | 2055 | return -EOPNOTSUPP; |
db717d8e | 2056 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
2057 | } |
2058 | ||
2059 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
2060 | { | |
2061 | struct inode *inode = file_inode(filp); | |
2062 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2063 | int err; | |
2064 | ||
7beb01f7 | 2065 | if (!f2fs_sb_has_encrypt(sbi)) |
f424f664 JK |
2066 | return -EOPNOTSUPP; |
2067 | ||
f424f664 JK |
2068 | err = mnt_want_write_file(filp); |
2069 | if (err) | |
2070 | return err; | |
2071 | ||
846ae671 | 2072 | down_write(&sbi->sb_lock); |
d0d3f1b3 CY |
2073 | |
2074 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
2075 | goto got_it; | |
2076 | ||
f424f664 JK |
2077 | /* update superblock with uuid */ |
2078 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
2079 | ||
c5bda1c8 | 2080 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
2081 | if (err) { |
2082 | /* undo new data */ | |
2083 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
d0d3f1b3 | 2084 | goto out_err; |
f424f664 JK |
2085 | } |
2086 | got_it: | |
2087 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
2088 | 16)) | |
d0d3f1b3 CY |
2089 | err = -EFAULT; |
2090 | out_err: | |
846ae671 | 2091 | up_write(&sbi->sb_lock); |
d0d3f1b3 CY |
2092 | mnt_drop_write_file(filp); |
2093 | return err; | |
f424f664 JK |
2094 | } |
2095 | ||
c1c1b583 CY |
2096 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
2097 | { | |
2098 | struct inode *inode = file_inode(filp); | |
2099 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 2100 | __u32 sync; |
7fb17fe4 | 2101 | int ret; |
c1c1b583 CY |
2102 | |
2103 | if (!capable(CAP_SYS_ADMIN)) | |
2104 | return -EPERM; | |
2105 | ||
d530d4d8 | 2106 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
2107 | return -EFAULT; |
2108 | ||
d530d4d8 CY |
2109 | if (f2fs_readonly(sbi->sb)) |
2110 | return -EROFS; | |
c1c1b583 | 2111 | |
7fb17fe4 CY |
2112 | ret = mnt_want_write_file(filp); |
2113 | if (ret) | |
2114 | return ret; | |
2115 | ||
d530d4d8 | 2116 | if (!sync) { |
7fb17fe4 CY |
2117 | if (!mutex_trylock(&sbi->gc_mutex)) { |
2118 | ret = -EBUSY; | |
2119 | goto out; | |
2120 | } | |
d530d4d8 CY |
2121 | } else { |
2122 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
2123 | } |
2124 | ||
e066b83c | 2125 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
7fb17fe4 CY |
2126 | out: |
2127 | mnt_drop_write_file(filp); | |
2128 | return ret; | |
c1c1b583 CY |
2129 | } |
2130 | ||
34dc77ad JK |
2131 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
2132 | { | |
2133 | struct inode *inode = file_inode(filp); | |
2134 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2135 | struct f2fs_gc_range range; | |
2136 | u64 end; | |
2137 | int ret; | |
2138 | ||
2139 | if (!capable(CAP_SYS_ADMIN)) | |
2140 | return -EPERM; | |
2141 | ||
2142 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, | |
2143 | sizeof(range))) | |
2144 | return -EFAULT; | |
2145 | ||
2146 | if (f2fs_readonly(sbi->sb)) | |
2147 | return -EROFS; | |
2148 | ||
b82f6e34 YH |
2149 | end = range.start + range.len; |
2150 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) { | |
2151 | return -EINVAL; | |
2152 | } | |
2153 | ||
34dc77ad JK |
2154 | ret = mnt_want_write_file(filp); |
2155 | if (ret) | |
2156 | return ret; | |
2157 | ||
34dc77ad JK |
2158 | do_more: |
2159 | if (!range.sync) { | |
2160 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2161 | ret = -EBUSY; | |
2162 | goto out; | |
2163 | } | |
2164 | } else { | |
2165 | mutex_lock(&sbi->gc_mutex); | |
2166 | } | |
2167 | ||
2168 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); | |
67b0e42b | 2169 | range.start += BLKS_PER_SEC(sbi); |
34dc77ad JK |
2170 | if (range.start <= end) |
2171 | goto do_more; | |
2172 | out: | |
2173 | mnt_drop_write_file(filp); | |
2174 | return ret; | |
2175 | } | |
2176 | ||
059c0648 | 2177 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
456b88e4 CY |
2178 | { |
2179 | struct inode *inode = file_inode(filp); | |
2180 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 2181 | int ret; |
456b88e4 CY |
2182 | |
2183 | if (!capable(CAP_SYS_ADMIN)) | |
2184 | return -EPERM; | |
2185 | ||
2186 | if (f2fs_readonly(sbi->sb)) | |
2187 | return -EROFS; | |
2188 | ||
4354994f DR |
2189 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { |
2190 | f2fs_msg(sbi->sb, KERN_INFO, | |
2191 | "Skipping Checkpoint. Checkpoints currently disabled."); | |
2192 | return -EINVAL; | |
2193 | } | |
2194 | ||
7fb17fe4 CY |
2195 | ret = mnt_want_write_file(filp); |
2196 | if (ret) | |
2197 | return ret; | |
2198 | ||
2199 | ret = f2fs_sync_fs(sbi->sb, 1); | |
2200 | ||
2201 | mnt_drop_write_file(filp); | |
2202 | return ret; | |
456b88e4 CY |
2203 | } |
2204 | ||
d323d005 CY |
2205 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
2206 | struct file *filp, | |
2207 | struct f2fs_defragment *range) | |
2208 | { | |
2209 | struct inode *inode = file_inode(filp); | |
f3d98e74 | 2210 | struct f2fs_map_blocks map = { .m_next_extent = NULL, |
f4f0b677 JZ |
2211 | .m_seg_type = NO_CHECK_TYPE , |
2212 | .m_may_create = false }; | |
1061fd48 | 2213 | struct extent_info ei = {0, 0, 0}; |
f3d98e74 | 2214 | pgoff_t pg_start, pg_end, next_pgofs; |
3519e3f9 | 2215 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 2216 | unsigned int total = 0, sec_num; |
d323d005 CY |
2217 | block_t blk_end = 0; |
2218 | bool fragmented = false; | |
2219 | int err; | |
2220 | ||
2221 | /* if in-place-update policy is enabled, don't waste time here */ | |
4d57b86d | 2222 | if (f2fs_should_update_inplace(inode, NULL)) |
d323d005 CY |
2223 | return -EINVAL; |
2224 | ||
09cbfeaf KS |
2225 | pg_start = range->start >> PAGE_SHIFT; |
2226 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 2227 | |
2c4db1a6 | 2228 | f2fs_balance_fs(sbi, true); |
d323d005 | 2229 | |
5955102c | 2230 | inode_lock(inode); |
d323d005 CY |
2231 | |
2232 | /* writeback all dirty pages in the range */ | |
2233 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 2234 | range->start + range->len - 1); |
d323d005 CY |
2235 | if (err) |
2236 | goto out; | |
2237 | ||
2238 | /* | |
2239 | * lookup mapping info in extent cache, skip defragmenting if physical | |
2240 | * block addresses are continuous. | |
2241 | */ | |
2242 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
2243 | if (ei.fofs + ei.len >= pg_end) | |
2244 | goto out; | |
2245 | } | |
2246 | ||
2247 | map.m_lblk = pg_start; | |
f3d98e74 | 2248 | map.m_next_pgofs = &next_pgofs; |
d323d005 CY |
2249 | |
2250 | /* | |
2251 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
2252 | * physical block addresses are continuous even if there are hole(s) | |
2253 | * in logical blocks. | |
2254 | */ | |
2255 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 2256 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2257 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2258 | if (err) |
2259 | goto out; | |
2260 | ||
2261 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2262 | map.m_lblk = next_pgofs; |
d323d005 CY |
2263 | continue; |
2264 | } | |
2265 | ||
25a912e5 | 2266 | if (blk_end && blk_end != map.m_pblk) |
d323d005 | 2267 | fragmented = true; |
25a912e5 CY |
2268 | |
2269 | /* record total count of block that we're going to move */ | |
2270 | total += map.m_len; | |
2271 | ||
d323d005 CY |
2272 | blk_end = map.m_pblk + map.m_len; |
2273 | ||
2274 | map.m_lblk += map.m_len; | |
d323d005 CY |
2275 | } |
2276 | ||
2277 | if (!fragmented) | |
2278 | goto out; | |
2279 | ||
25a912e5 | 2280 | sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
d323d005 CY |
2281 | |
2282 | /* | |
2283 | * make sure there are enough free section for LFS allocation, this can | |
2284 | * avoid defragment running in SSR mode when free section are allocated | |
2285 | * intensively | |
2286 | */ | |
7f3037a5 | 2287 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
2288 | err = -EAGAIN; |
2289 | goto out; | |
2290 | } | |
2291 | ||
25a912e5 CY |
2292 | map.m_lblk = pg_start; |
2293 | map.m_len = pg_end - pg_start; | |
2294 | total = 0; | |
2295 | ||
d323d005 CY |
2296 | while (map.m_lblk < pg_end) { |
2297 | pgoff_t idx; | |
2298 | int cnt = 0; | |
2299 | ||
2300 | do_map: | |
a1c1e9b7 | 2301 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2302 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2303 | if (err) |
2304 | goto clear_out; | |
2305 | ||
2306 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2307 | map.m_lblk = next_pgofs; |
d323d005 CY |
2308 | continue; |
2309 | } | |
2310 | ||
91942321 | 2311 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2312 | |
2313 | idx = map.m_lblk; | |
2314 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2315 | struct page *page; | |
2316 | ||
4d57b86d | 2317 | page = f2fs_get_lock_data_page(inode, idx, true); |
d323d005 CY |
2318 | if (IS_ERR(page)) { |
2319 | err = PTR_ERR(page); | |
2320 | goto clear_out; | |
2321 | } | |
2322 | ||
2323 | set_page_dirty(page); | |
2324 | f2fs_put_page(page, 1); | |
2325 | ||
2326 | idx++; | |
2327 | cnt++; | |
2328 | total++; | |
2329 | } | |
2330 | ||
2331 | map.m_lblk = idx; | |
d323d005 CY |
2332 | |
2333 | if (idx < pg_end && cnt < blk_per_seg) | |
2334 | goto do_map; | |
2335 | ||
91942321 | 2336 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2337 | |
2338 | err = filemap_fdatawrite(inode->i_mapping); | |
2339 | if (err) | |
2340 | goto out; | |
2341 | } | |
2342 | clear_out: | |
91942321 | 2343 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2344 | out: |
5955102c | 2345 | inode_unlock(inode); |
d323d005 | 2346 | if (!err) |
09cbfeaf | 2347 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2348 | return err; |
2349 | } | |
2350 | ||
2351 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2352 | { | |
2353 | struct inode *inode = file_inode(filp); | |
2354 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2355 | struct f2fs_defragment range; | |
2356 | int err; | |
2357 | ||
2358 | if (!capable(CAP_SYS_ADMIN)) | |
2359 | return -EPERM; | |
2360 | ||
7eab0c0d | 2361 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
d323d005 CY |
2362 | return -EINVAL; |
2363 | ||
d7563861 KM |
2364 | if (f2fs_readonly(sbi->sb)) |
2365 | return -EROFS; | |
d323d005 CY |
2366 | |
2367 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
d7563861 KM |
2368 | sizeof(range))) |
2369 | return -EFAULT; | |
d323d005 CY |
2370 | |
2371 | /* verify alignment of offset & size */ | |
d7563861 KM |
2372 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2373 | return -EINVAL; | |
d323d005 | 2374 | |
1941d7bc | 2375 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
d7563861 KM |
2376 | sbi->max_file_blocks)) |
2377 | return -EINVAL; | |
2378 | ||
2379 | err = mnt_want_write_file(filp); | |
2380 | if (err) | |
2381 | return err; | |
1941d7bc | 2382 | |
d323d005 | 2383 | err = f2fs_defragment_range(sbi, filp, &range); |
d7563861 KM |
2384 | mnt_drop_write_file(filp); |
2385 | ||
d0239e1b | 2386 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 | 2387 | if (err < 0) |
d7563861 | 2388 | return err; |
d323d005 CY |
2389 | |
2390 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2391 | sizeof(range))) | |
d7563861 KM |
2392 | return -EFAULT; |
2393 | ||
2394 | return 0; | |
d323d005 CY |
2395 | } |
2396 | ||
4dd6f977 JK |
2397 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2398 | struct file *file_out, loff_t pos_out, size_t len) | |
2399 | { | |
2400 | struct inode *src = file_inode(file_in); | |
2401 | struct inode *dst = file_inode(file_out); | |
2402 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2403 | size_t olen = len, dst_max_i_size = 0; | |
2404 | size_t dst_osize; | |
2405 | int ret; | |
2406 | ||
2407 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2408 | src->i_sb != dst->i_sb) | |
2409 | return -EXDEV; | |
2410 | ||
2411 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2412 | return -EROFS; | |
2413 | ||
fe8494bf CY |
2414 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2415 | return -EINVAL; | |
4dd6f977 JK |
2416 | |
2417 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2418 | return -EOPNOTSUPP; | |
2419 | ||
d95fd91c FL |
2420 | if (src == dst) { |
2421 | if (pos_in == pos_out) | |
2422 | return 0; | |
2423 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2424 | return -EINVAL; | |
2425 | } | |
2426 | ||
4dd6f977 | 2427 | inode_lock(src); |
20a3d61d | 2428 | if (src != dst) { |
bb06664a CY |
2429 | ret = -EBUSY; |
2430 | if (!inode_trylock(dst)) | |
2431 | goto out; | |
20a3d61d | 2432 | } |
4dd6f977 JK |
2433 | |
2434 | ret = -EINVAL; | |
2435 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2436 | goto out_unlock; | |
2437 | if (len == 0) | |
2438 | olen = len = src->i_size - pos_in; | |
2439 | if (pos_in + len == src->i_size) | |
2440 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2441 | if (len == 0) { | |
2442 | ret = 0; | |
2443 | goto out_unlock; | |
2444 | } | |
2445 | ||
2446 | dst_osize = dst->i_size; | |
2447 | if (pos_out + olen > dst->i_size) | |
2448 | dst_max_i_size = pos_out + olen; | |
2449 | ||
2450 | /* verify the end result is block aligned */ | |
2451 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2452 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2453 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2454 | goto out_unlock; | |
2455 | ||
2456 | ret = f2fs_convert_inline_inode(src); | |
2457 | if (ret) | |
2458 | goto out_unlock; | |
2459 | ||
2460 | ret = f2fs_convert_inline_inode(dst); | |
2461 | if (ret) | |
2462 | goto out_unlock; | |
2463 | ||
2464 | /* write out all dirty pages from offset */ | |
2465 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2466 | pos_in, pos_in + len); | |
2467 | if (ret) | |
2468 | goto out_unlock; | |
2469 | ||
2470 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2471 | pos_out, pos_out + len); | |
2472 | if (ret) | |
2473 | goto out_unlock; | |
2474 | ||
2475 | f2fs_balance_fs(sbi, true); | |
6f8d4455 JK |
2476 | |
2477 | down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); | |
2478 | if (src != dst) { | |
2479 | ret = -EBUSY; | |
2480 | if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) | |
2481 | goto out_src; | |
2482 | } | |
2483 | ||
4dd6f977 | 2484 | f2fs_lock_op(sbi); |
61e4da11 FL |
2485 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2486 | pos_out >> F2FS_BLKSIZE_BITS, | |
2487 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2488 | |
2489 | if (!ret) { | |
2490 | if (dst_max_i_size) | |
2491 | f2fs_i_size_write(dst, dst_max_i_size); | |
2492 | else if (dst_osize != dst->i_size) | |
2493 | f2fs_i_size_write(dst, dst_osize); | |
2494 | } | |
2495 | f2fs_unlock_op(sbi); | |
6f8d4455 JK |
2496 | |
2497 | if (src != dst) | |
b2532c69 | 2498 | up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]); |
6f8d4455 JK |
2499 | out_src: |
2500 | up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); | |
2501 | out_unlock: | |
2502 | if (src != dst) | |
4dd6f977 | 2503 | inode_unlock(dst); |
20a3d61d | 2504 | out: |
4dd6f977 JK |
2505 | inode_unlock(src); |
2506 | return ret; | |
2507 | } | |
2508 | ||
2509 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2510 | { | |
2511 | struct f2fs_move_range range; | |
2512 | struct fd dst; | |
2513 | int err; | |
2514 | ||
2515 | if (!(filp->f_mode & FMODE_READ) || | |
2516 | !(filp->f_mode & FMODE_WRITE)) | |
2517 | return -EBADF; | |
2518 | ||
2519 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2520 | sizeof(range))) | |
2521 | return -EFAULT; | |
2522 | ||
2523 | dst = fdget(range.dst_fd); | |
2524 | if (!dst.file) | |
2525 | return -EBADF; | |
2526 | ||
2527 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2528 | err = -EBADF; | |
2529 | goto err_out; | |
2530 | } | |
2531 | ||
2532 | err = mnt_want_write_file(filp); | |
2533 | if (err) | |
2534 | goto err_out; | |
2535 | ||
2536 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2537 | range.pos_out, range.len); | |
2538 | ||
2539 | mnt_drop_write_file(filp); | |
3cecfa5f KM |
2540 | if (err) |
2541 | goto err_out; | |
4dd6f977 JK |
2542 | |
2543 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2544 | &range, sizeof(range))) | |
2545 | err = -EFAULT; | |
2546 | err_out: | |
2547 | fdput(dst); | |
2548 | return err; | |
2549 | } | |
2550 | ||
e066b83c JK |
2551 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2552 | { | |
2553 | struct inode *inode = file_inode(filp); | |
2554 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2555 | struct sit_info *sm = SIT_I(sbi); | |
2556 | unsigned int start_segno = 0, end_segno = 0; | |
2557 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2558 | struct f2fs_flush_device range; | |
2559 | int ret; | |
2560 | ||
2561 | if (!capable(CAP_SYS_ADMIN)) | |
2562 | return -EPERM; | |
2563 | ||
2564 | if (f2fs_readonly(sbi->sb)) | |
2565 | return -EROFS; | |
2566 | ||
4354994f DR |
2567 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
2568 | return -EINVAL; | |
2569 | ||
e066b83c JK |
2570 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, |
2571 | sizeof(range))) | |
2572 | return -EFAULT; | |
2573 | ||
2574 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || | |
2c70c5e3 | 2575 | __is_large_section(sbi)) { |
e066b83c JK |
2576 | f2fs_msg(sbi->sb, KERN_WARNING, |
2577 | "Can't flush %u in %d for segs_per_sec %u != 1\n", | |
2578 | range.dev_num, sbi->s_ndevs, | |
2579 | sbi->segs_per_sec); | |
2580 | return -EINVAL; | |
2581 | } | |
2582 | ||
2583 | ret = mnt_want_write_file(filp); | |
2584 | if (ret) | |
2585 | return ret; | |
2586 | ||
2587 | if (range.dev_num != 0) | |
2588 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2589 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2590 | ||
2591 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2592 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2593 | start_segno = dev_start_segno; | |
2594 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2595 | ||
2596 | while (start_segno < end_segno) { | |
2597 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2598 | ret = -EBUSY; | |
2599 | goto out; | |
2600 | } | |
2601 | sm->last_victim[GC_CB] = end_segno + 1; | |
2602 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2603 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2604 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2605 | if (ret == -EAGAIN) | |
2606 | ret = 0; | |
2607 | else if (ret < 0) | |
2608 | break; | |
2609 | start_segno++; | |
2610 | } | |
2611 | out: | |
2612 | mnt_drop_write_file(filp); | |
2613 | return ret; | |
2614 | } | |
2615 | ||
e65ef207 JK |
2616 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
2617 | { | |
2618 | struct inode *inode = file_inode(filp); | |
2619 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); | |
2620 | ||
2621 | /* Must validate to set it with SQLite behavior in Android. */ | |
2622 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; | |
2623 | ||
2624 | return put_user(sb_feature, (u32 __user *)arg); | |
2625 | } | |
e066b83c | 2626 | |
2c1d0305 | 2627 | #ifdef CONFIG_QUOTA |
78130819 CY |
2628 | int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid) |
2629 | { | |
2630 | struct dquot *transfer_to[MAXQUOTAS] = {}; | |
2631 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2632 | struct super_block *sb = sbi->sb; | |
2633 | int err = 0; | |
2634 | ||
2635 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); | |
2636 | if (!IS_ERR(transfer_to[PRJQUOTA])) { | |
2637 | err = __dquot_transfer(inode, transfer_to); | |
2638 | if (err) | |
2639 | set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); | |
2640 | dqput(transfer_to[PRJQUOTA]); | |
2641 | } | |
2642 | return err; | |
2643 | } | |
2644 | ||
2c1d0305 CY |
2645 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) |
2646 | { | |
2647 | struct inode *inode = file_inode(filp); | |
2648 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2649 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2c1d0305 CY |
2650 | struct page *ipage; |
2651 | kprojid_t kprojid; | |
2652 | int err; | |
2653 | ||
7beb01f7 | 2654 | if (!f2fs_sb_has_project_quota(sbi)) { |
2c1d0305 CY |
2655 | if (projid != F2FS_DEF_PROJID) |
2656 | return -EOPNOTSUPP; | |
2657 | else | |
2658 | return 0; | |
2659 | } | |
2660 | ||
2661 | if (!f2fs_has_extra_attr(inode)) | |
2662 | return -EOPNOTSUPP; | |
2663 | ||
2664 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); | |
2665 | ||
2666 | if (projid_eq(kprojid, F2FS_I(inode)->i_projid)) | |
2667 | return 0; | |
2668 | ||
2c1d0305 | 2669 | err = -EPERM; |
2c1d0305 CY |
2670 | /* Is it quota file? Do not allow user to mess with it */ |
2671 | if (IS_NOQUOTA(inode)) | |
c8e92757 | 2672 | return err; |
2c1d0305 | 2673 | |
4d57b86d | 2674 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
c8e92757 WS |
2675 | if (IS_ERR(ipage)) |
2676 | return PTR_ERR(ipage); | |
2c1d0305 CY |
2677 | |
2678 | if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize, | |
2679 | i_projid)) { | |
2680 | err = -EOVERFLOW; | |
2681 | f2fs_put_page(ipage, 1); | |
c8e92757 | 2682 | return err; |
2c1d0305 CY |
2683 | } |
2684 | f2fs_put_page(ipage, 1); | |
2685 | ||
c22aecd7 CY |
2686 | err = dquot_initialize(inode); |
2687 | if (err) | |
c8e92757 | 2688 | return err; |
2c1d0305 | 2689 | |
78130819 CY |
2690 | f2fs_lock_op(sbi); |
2691 | err = f2fs_transfer_project_quota(inode, kprojid); | |
2692 | if (err) | |
2693 | goto out_unlock; | |
2c1d0305 CY |
2694 | |
2695 | F2FS_I(inode)->i_projid = kprojid; | |
2696 | inode->i_ctime = current_time(inode); | |
2c1d0305 | 2697 | f2fs_mark_inode_dirty_sync(inode, true); |
78130819 CY |
2698 | out_unlock: |
2699 | f2fs_unlock_op(sbi); | |
2c1d0305 CY |
2700 | return err; |
2701 | } | |
2702 | #else | |
78130819 CY |
2703 | int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid) |
2704 | { | |
2705 | return 0; | |
2706 | } | |
2707 | ||
2c1d0305 CY |
2708 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) |
2709 | { | |
2710 | if (projid != F2FS_DEF_PROJID) | |
2711 | return -EOPNOTSUPP; | |
2712 | return 0; | |
2713 | } | |
2714 | #endif | |
2715 | ||
2716 | /* Transfer internal flags to xflags */ | |
2717 | static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags) | |
2718 | { | |
2719 | __u32 xflags = 0; | |
2720 | ||
59c84408 | 2721 | if (iflags & F2FS_SYNC_FL) |
2c1d0305 | 2722 | xflags |= FS_XFLAG_SYNC; |
59c84408 | 2723 | if (iflags & F2FS_IMMUTABLE_FL) |
2c1d0305 | 2724 | xflags |= FS_XFLAG_IMMUTABLE; |
59c84408 | 2725 | if (iflags & F2FS_APPEND_FL) |
2c1d0305 | 2726 | xflags |= FS_XFLAG_APPEND; |
59c84408 | 2727 | if (iflags & F2FS_NODUMP_FL) |
2c1d0305 | 2728 | xflags |= FS_XFLAG_NODUMP; |
59c84408 | 2729 | if (iflags & F2FS_NOATIME_FL) |
2c1d0305 | 2730 | xflags |= FS_XFLAG_NOATIME; |
59c84408 | 2731 | if (iflags & F2FS_PROJINHERIT_FL) |
2c1d0305 CY |
2732 | xflags |= FS_XFLAG_PROJINHERIT; |
2733 | return xflags; | |
2734 | } | |
2735 | ||
2736 | #define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ | |
2737 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ | |
2738 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) | |
2739 | ||
2c1d0305 CY |
2740 | /* Transfer xflags flags to internal */ |
2741 | static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags) | |
2742 | { | |
2743 | unsigned long iflags = 0; | |
2744 | ||
2745 | if (xflags & FS_XFLAG_SYNC) | |
59c84408 | 2746 | iflags |= F2FS_SYNC_FL; |
2c1d0305 | 2747 | if (xflags & FS_XFLAG_IMMUTABLE) |
59c84408 | 2748 | iflags |= F2FS_IMMUTABLE_FL; |
2c1d0305 | 2749 | if (xflags & FS_XFLAG_APPEND) |
59c84408 | 2750 | iflags |= F2FS_APPEND_FL; |
2c1d0305 | 2751 | if (xflags & FS_XFLAG_NODUMP) |
59c84408 | 2752 | iflags |= F2FS_NODUMP_FL; |
2c1d0305 | 2753 | if (xflags & FS_XFLAG_NOATIME) |
59c84408 | 2754 | iflags |= F2FS_NOATIME_FL; |
2c1d0305 | 2755 | if (xflags & FS_XFLAG_PROJINHERIT) |
59c84408 | 2756 | iflags |= F2FS_PROJINHERIT_FL; |
2c1d0305 CY |
2757 | |
2758 | return iflags; | |
2759 | } | |
2760 | ||
2761 | static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) | |
2762 | { | |
2763 | struct inode *inode = file_inode(filp); | |
2764 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2765 | struct fsxattr fa; | |
2766 | ||
2767 | memset(&fa, 0, sizeof(struct fsxattr)); | |
2768 | fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags & | |
c807a7cb | 2769 | F2FS_FL_USER_VISIBLE); |
2c1d0305 | 2770 | |
7beb01f7 | 2771 | if (f2fs_sb_has_project_quota(F2FS_I_SB(inode))) |
2c1d0305 CY |
2772 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, |
2773 | fi->i_projid); | |
2774 | ||
2775 | if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) | |
2776 | return -EFAULT; | |
2777 | return 0; | |
2778 | } | |
2779 | ||
c8e92757 WS |
2780 | static int f2fs_ioctl_check_project(struct inode *inode, struct fsxattr *fa) |
2781 | { | |
2782 | /* | |
2783 | * Project Quota ID state is only allowed to change from within the init | |
2784 | * namespace. Enforce that restriction only if we are trying to change | |
2785 | * the quota ID state. Everything else is allowed in user namespaces. | |
2786 | */ | |
2787 | if (current_user_ns() == &init_user_ns) | |
2788 | return 0; | |
2789 | ||
2790 | if (__kprojid_val(F2FS_I(inode)->i_projid) != fa->fsx_projid) | |
2791 | return -EINVAL; | |
2792 | ||
2793 | if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) { | |
2794 | if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT)) | |
2795 | return -EINVAL; | |
2796 | } else { | |
2797 | if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT) | |
2798 | return -EINVAL; | |
2799 | } | |
2800 | ||
2801 | return 0; | |
2802 | } | |
2803 | ||
2c1d0305 CY |
2804 | static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) |
2805 | { | |
2806 | struct inode *inode = file_inode(filp); | |
2807 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2808 | struct fsxattr fa; | |
2809 | unsigned int flags; | |
2810 | int err; | |
2811 | ||
2812 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa))) | |
2813 | return -EFAULT; | |
2814 | ||
2815 | /* Make sure caller has proper permission */ | |
2816 | if (!inode_owner_or_capable(inode)) | |
2817 | return -EACCES; | |
2818 | ||
2819 | if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS) | |
2820 | return -EOPNOTSUPP; | |
2821 | ||
2822 | flags = f2fs_xflags_to_iflags(fa.fsx_xflags); | |
2823 | if (f2fs_mask_flags(inode->i_mode, flags) != flags) | |
2824 | return -EOPNOTSUPP; | |
2825 | ||
2826 | err = mnt_want_write_file(filp); | |
2827 | if (err) | |
2828 | return err; | |
2829 | ||
2830 | inode_lock(inode); | |
c8e92757 WS |
2831 | err = f2fs_ioctl_check_project(inode, &fa); |
2832 | if (err) | |
2833 | goto out; | |
2c1d0305 CY |
2834 | flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) | |
2835 | (flags & F2FS_FL_XFLAG_VISIBLE); | |
2836 | err = __f2fs_ioc_setflags(inode, flags); | |
2c1d0305 | 2837 | if (err) |
c8e92757 | 2838 | goto out; |
2c1d0305 CY |
2839 | |
2840 | err = f2fs_ioc_setproject(filp, fa.fsx_projid); | |
c8e92757 WS |
2841 | out: |
2842 | inode_unlock(inode); | |
2843 | mnt_drop_write_file(filp); | |
2844 | return err; | |
2c1d0305 | 2845 | } |
e066b83c | 2846 | |
1ad71a27 JK |
2847 | int f2fs_pin_file_control(struct inode *inode, bool inc) |
2848 | { | |
2849 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2850 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2851 | ||
2852 | /* Use i_gc_failures for normal file as a risk signal. */ | |
2853 | if (inc) | |
2ef79ecb CY |
2854 | f2fs_i_gc_failures_write(inode, |
2855 | fi->i_gc_failures[GC_FAILURE_PIN] + 1); | |
1ad71a27 | 2856 | |
2ef79ecb | 2857 | if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) { |
1ad71a27 JK |
2858 | f2fs_msg(sbi->sb, KERN_WARNING, |
2859 | "%s: Enable GC = ino %lx after %x GC trials\n", | |
2ef79ecb CY |
2860 | __func__, inode->i_ino, |
2861 | fi->i_gc_failures[GC_FAILURE_PIN]); | |
1ad71a27 JK |
2862 | clear_inode_flag(inode, FI_PIN_FILE); |
2863 | return -EAGAIN; | |
2864 | } | |
2865 | return 0; | |
2866 | } | |
2867 | ||
2868 | static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg) | |
2869 | { | |
2870 | struct inode *inode = file_inode(filp); | |
2871 | __u32 pin; | |
2872 | int ret = 0; | |
2873 | ||
2874 | if (!inode_owner_or_capable(inode)) | |
2875 | return -EACCES; | |
2876 | ||
2877 | if (get_user(pin, (__u32 __user *)arg)) | |
2878 | return -EFAULT; | |
2879 | ||
2880 | if (!S_ISREG(inode->i_mode)) | |
2881 | return -EINVAL; | |
2882 | ||
2883 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
2884 | return -EROFS; | |
2885 | ||
2886 | ret = mnt_want_write_file(filp); | |
2887 | if (ret) | |
2888 | return ret; | |
2889 | ||
2890 | inode_lock(inode); | |
2891 | ||
4d57b86d | 2892 | if (f2fs_should_update_outplace(inode, NULL)) { |
bb9e3bb8 CY |
2893 | ret = -EINVAL; |
2894 | goto out; | |
2895 | } | |
2896 | ||
1ad71a27 JK |
2897 | if (!pin) { |
2898 | clear_inode_flag(inode, FI_PIN_FILE); | |
30933364 | 2899 | f2fs_i_gc_failures_write(inode, 0); |
1ad71a27 JK |
2900 | goto done; |
2901 | } | |
2902 | ||
2903 | if (f2fs_pin_file_control(inode, false)) { | |
2904 | ret = -EAGAIN; | |
2905 | goto out; | |
2906 | } | |
2907 | ret = f2fs_convert_inline_inode(inode); | |
2908 | if (ret) | |
2909 | goto out; | |
2910 | ||
2911 | set_inode_flag(inode, FI_PIN_FILE); | |
2ef79ecb | 2912 | ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
1ad71a27 JK |
2913 | done: |
2914 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
2915 | out: | |
2916 | inode_unlock(inode); | |
2917 | mnt_drop_write_file(filp); | |
2918 | return ret; | |
2919 | } | |
2920 | ||
2921 | static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg) | |
2922 | { | |
2923 | struct inode *inode = file_inode(filp); | |
2924 | __u32 pin = 0; | |
2925 | ||
2926 | if (is_inode_flag_set(inode, FI_PIN_FILE)) | |
2ef79ecb | 2927 | pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
1ad71a27 JK |
2928 | return put_user(pin, (u32 __user *)arg); |
2929 | } | |
2930 | ||
c4020b2d CY |
2931 | int f2fs_precache_extents(struct inode *inode) |
2932 | { | |
2933 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2934 | struct f2fs_map_blocks map; | |
2935 | pgoff_t m_next_extent; | |
2936 | loff_t end; | |
2937 | int err; | |
2938 | ||
2939 | if (is_inode_flag_set(inode, FI_NO_EXTENT)) | |
2940 | return -EOPNOTSUPP; | |
2941 | ||
2942 | map.m_lblk = 0; | |
2943 | map.m_next_pgofs = NULL; | |
2944 | map.m_next_extent = &m_next_extent; | |
2945 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 2946 | map.m_may_create = false; |
c4020b2d CY |
2947 | end = F2FS_I_SB(inode)->max_file_blocks; |
2948 | ||
2949 | while (map.m_lblk < end) { | |
2950 | map.m_len = end - map.m_lblk; | |
2951 | ||
b2532c69 | 2952 | down_write(&fi->i_gc_rwsem[WRITE]); |
c4020b2d | 2953 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); |
b2532c69 | 2954 | up_write(&fi->i_gc_rwsem[WRITE]); |
c4020b2d CY |
2955 | if (err) |
2956 | return err; | |
2957 | ||
2958 | map.m_lblk = m_next_extent; | |
2959 | } | |
2960 | ||
2961 | return err; | |
2962 | } | |
2963 | ||
2964 | static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg) | |
2965 | { | |
2966 | return f2fs_precache_extents(file_inode(filp)); | |
2967 | } | |
2968 | ||
52656e6c JK |
2969 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2970 | { | |
1f227a3e JK |
2971 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp))))) |
2972 | return -EIO; | |
2973 | ||
52656e6c JK |
2974 | switch (cmd) { |
2975 | case F2FS_IOC_GETFLAGS: | |
2976 | return f2fs_ioc_getflags(filp, arg); | |
2977 | case F2FS_IOC_SETFLAGS: | |
2978 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2979 | case F2FS_IOC_GETVERSION: |
2980 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2981 | case F2FS_IOC_START_ATOMIC_WRITE: |
2982 | return f2fs_ioc_start_atomic_write(filp); | |
2983 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2984 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2985 | case F2FS_IOC_START_VOLATILE_WRITE: |
2986 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2987 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2988 | return f2fs_ioc_release_volatile_write(filp); | |
2989 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2990 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2991 | case F2FS_IOC_SHUTDOWN: |
2992 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2993 | case FITRIM: |
2994 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2995 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2996 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2997 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2998 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2999 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
3000 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
3001 | case F2FS_IOC_GARBAGE_COLLECT: |
3002 | return f2fs_ioc_gc(filp, arg); | |
34dc77ad JK |
3003 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
3004 | return f2fs_ioc_gc_range(filp, arg); | |
456b88e4 | 3005 | case F2FS_IOC_WRITE_CHECKPOINT: |
059c0648 | 3006 | return f2fs_ioc_write_checkpoint(filp, arg); |
d323d005 CY |
3007 | case F2FS_IOC_DEFRAGMENT: |
3008 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
3009 | case F2FS_IOC_MOVE_RANGE: |
3010 | return f2fs_ioc_move_range(filp, arg); | |
e066b83c JK |
3011 | case F2FS_IOC_FLUSH_DEVICE: |
3012 | return f2fs_ioc_flush_device(filp, arg); | |
e65ef207 JK |
3013 | case F2FS_IOC_GET_FEATURES: |
3014 | return f2fs_ioc_get_features(filp, arg); | |
2c1d0305 CY |
3015 | case F2FS_IOC_FSGETXATTR: |
3016 | return f2fs_ioc_fsgetxattr(filp, arg); | |
3017 | case F2FS_IOC_FSSETXATTR: | |
3018 | return f2fs_ioc_fssetxattr(filp, arg); | |
1ad71a27 JK |
3019 | case F2FS_IOC_GET_PIN_FILE: |
3020 | return f2fs_ioc_get_pin_file(filp, arg); | |
3021 | case F2FS_IOC_SET_PIN_FILE: | |
3022 | return f2fs_ioc_set_pin_file(filp, arg); | |
c4020b2d CY |
3023 | case F2FS_IOC_PRECACHE_EXTENTS: |
3024 | return f2fs_ioc_precache_extents(filp, arg); | |
fbfa2cc5 JK |
3025 | default: |
3026 | return -ENOTTY; | |
3027 | } | |
3028 | } | |
3029 | ||
fcc85a4d JK |
3030 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
3031 | { | |
b439b103 JK |
3032 | struct file *file = iocb->ki_filp; |
3033 | struct inode *inode = file_inode(file); | |
3034 | ssize_t ret; | |
fcc85a4d | 3035 | |
1f227a3e JK |
3036 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
3037 | return -EIO; | |
3038 | ||
b91050a8 HL |
3039 | if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT)) |
3040 | return -EINVAL; | |
3041 | ||
3042 | if (!inode_trylock(inode)) { | |
3043 | if (iocb->ki_flags & IOCB_NOWAIT) | |
3044 | return -EAGAIN; | |
3045 | inode_lock(inode); | |
3046 | } | |
3047 | ||
b439b103 JK |
3048 | ret = generic_write_checks(iocb, from); |
3049 | if (ret > 0) { | |
dc7a10dd JK |
3050 | bool preallocated = false; |
3051 | size_t target_size = 0; | |
dc91de78 | 3052 | int err; |
a7de6086 | 3053 | |
dc91de78 JK |
3054 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
3055 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 3056 | |
b91050a8 HL |
3057 | if ((iocb->ki_flags & IOCB_NOWAIT) && |
3058 | (iocb->ki_flags & IOCB_DIRECT)) { | |
3059 | if (!f2fs_overwrite_io(inode, iocb->ki_pos, | |
3060 | iov_iter_count(from)) || | |
3061 | f2fs_has_inline_data(inode) || | |
f847c699 CY |
3062 | f2fs_force_buffered_io(inode, |
3063 | iocb, from)) { | |
cba41be0 YH |
3064 | clear_inode_flag(inode, |
3065 | FI_NO_PREALLOC); | |
b91050a8 HL |
3066 | inode_unlock(inode); |
3067 | return -EAGAIN; | |
3068 | } | |
3069 | ||
3070 | } else { | |
dc7a10dd JK |
3071 | preallocated = true; |
3072 | target_size = iocb->ki_pos + iov_iter_count(from); | |
3073 | ||
b91050a8 HL |
3074 | err = f2fs_preallocate_blocks(iocb, from); |
3075 | if (err) { | |
3076 | clear_inode_flag(inode, FI_NO_PREALLOC); | |
3077 | inode_unlock(inode); | |
3078 | return err; | |
3079 | } | |
9dfa1baf | 3080 | } |
a7de6086 | 3081 | ret = __generic_file_write_iter(iocb, from); |
dc91de78 | 3082 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b0af6d49 | 3083 | |
dc7a10dd JK |
3084 | /* if we couldn't write data, we should deallocate blocks. */ |
3085 | if (preallocated && i_size_read(inode) < target_size) | |
3086 | f2fs_truncate(inode); | |
3087 | ||
b0af6d49 CY |
3088 | if (ret > 0) |
3089 | f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); | |
b439b103 JK |
3090 | } |
3091 | inode_unlock(inode); | |
3092 | ||
e2592217 CH |
3093 | if (ret > 0) |
3094 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 3095 | return ret; |
fcc85a4d JK |
3096 | } |
3097 | ||
e9750824 NJ |
3098 | #ifdef CONFIG_COMPAT |
3099 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
3100 | { | |
3101 | switch (cmd) { | |
3102 | case F2FS_IOC32_GETFLAGS: | |
3103 | cmd = F2FS_IOC_GETFLAGS; | |
3104 | break; | |
3105 | case F2FS_IOC32_SETFLAGS: | |
3106 | cmd = F2FS_IOC_SETFLAGS; | |
3107 | break; | |
04ef4b62 CY |
3108 | case F2FS_IOC32_GETVERSION: |
3109 | cmd = F2FS_IOC_GETVERSION; | |
3110 | break; | |
3111 | case F2FS_IOC_START_ATOMIC_WRITE: | |
3112 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
3113 | case F2FS_IOC_START_VOLATILE_WRITE: | |
3114 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
3115 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
3116 | case F2FS_IOC_SHUTDOWN: | |
3117 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
3118 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
3119 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
3120 | case F2FS_IOC_GARBAGE_COLLECT: | |
34dc77ad | 3121 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
04ef4b62 CY |
3122 | case F2FS_IOC_WRITE_CHECKPOINT: |
3123 | case F2FS_IOC_DEFRAGMENT: | |
4dd6f977 | 3124 | case F2FS_IOC_MOVE_RANGE: |
e066b83c | 3125 | case F2FS_IOC_FLUSH_DEVICE: |
e65ef207 | 3126 | case F2FS_IOC_GET_FEATURES: |
2c1d0305 CY |
3127 | case F2FS_IOC_FSGETXATTR: |
3128 | case F2FS_IOC_FSSETXATTR: | |
1ad71a27 JK |
3129 | case F2FS_IOC_GET_PIN_FILE: |
3130 | case F2FS_IOC_SET_PIN_FILE: | |
c4020b2d | 3131 | case F2FS_IOC_PRECACHE_EXTENTS: |
4dd6f977 | 3132 | break; |
e9750824 NJ |
3133 | default: |
3134 | return -ENOIOCTLCMD; | |
3135 | } | |
3136 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
3137 | } | |
3138 | #endif | |
3139 | ||
fbfa2cc5 | 3140 | const struct file_operations f2fs_file_operations = { |
267378d4 | 3141 | .llseek = f2fs_llseek, |
aad4f8bb | 3142 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
3143 | .write_iter = f2fs_file_write_iter, |
3144 | .open = f2fs_file_open, | |
12662234 | 3145 | .release = f2fs_release_file, |
fbfa2cc5 | 3146 | .mmap = f2fs_file_mmap, |
7a10f017 | 3147 | .flush = f2fs_file_flush, |
fbfa2cc5 JK |
3148 | .fsync = f2fs_sync_file, |
3149 | .fallocate = f2fs_fallocate, | |
3150 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
3151 | #ifdef CONFIG_COMPAT |
3152 | .compat_ioctl = f2fs_compat_ioctl, | |
3153 | #endif | |
fbfa2cc5 | 3154 | .splice_read = generic_file_splice_read, |
8d020765 | 3155 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 3156 | }; |