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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 | ||
d7648343 CY |
42 | trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret); |
43 | ||
ea4d479b | 44 | return ret; |
5a3a2d83 QS |
45 | } |
46 | ||
ea4d479b | 47 | static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf) |
fbfa2cc5 JK |
48 | { |
49 | struct page *page = vmf->page; | |
11bac800 | 50 | struct inode *inode = file_inode(vmf->vma->vm_file); |
4081363f | 51 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
39a86958 | 52 | struct dnode_of_data dn = { .node_changed = false }; |
e479556b | 53 | int err; |
fbfa2cc5 | 54 | |
1f227a3e JK |
55 | if (unlikely(f2fs_cp_error(sbi))) { |
56 | err = -EIO; | |
57 | goto err; | |
58 | } | |
59 | ||
fbfa2cc5 | 60 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
61 | |
62 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 63 | |
11bac800 | 64 | file_update_time(vmf->vma->vm_file); |
5a3a2d83 | 65 | down_read(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 | 66 | lock_page(page); |
6bacf52f | 67 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 68 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 69 | !PageUptodate(page))) { |
fbfa2cc5 JK |
70 | unlock_page(page); |
71 | err = -EFAULT; | |
5a3a2d83 | 72 | goto out_sem; |
fbfa2cc5 JK |
73 | } |
74 | ||
39a86958 CY |
75 | /* block allocation */ |
76 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); | |
77 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
78 | err = f2fs_get_block(&dn, page->index); | |
79 | f2fs_put_dnode(&dn); | |
80 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); | |
81 | if (err) { | |
82 | unlock_page(page); | |
83 | goto out_sem; | |
84 | } | |
85 | ||
86 | /* fill the page */ | |
bae0ee7a | 87 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
39a86958 CY |
88 | |
89 | /* wait for GCed page writeback via META_MAPPING */ | |
90 | f2fs_wait_on_block_writeback(inode, dn.data_blkaddr); | |
91 | ||
fbfa2cc5 JK |
92 | /* |
93 | * check to see if the page is mapped already (no holes) | |
94 | */ | |
95 | if (PageMappedToDisk(page)) | |
39a86958 | 96 | goto out_sem; |
fbfa2cc5 JK |
97 | |
98 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 99 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 100 | i_size_read(inode)) { |
193bea1d | 101 | loff_t offset; |
f11e98bd | 102 | |
09cbfeaf KS |
103 | offset = i_size_read(inode) & ~PAGE_MASK; |
104 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
105 | } |
106 | set_page_dirty(page); | |
237c0790 JK |
107 | if (!PageUptodate(page)) |
108 | SetPageUptodate(page); | |
fbfa2cc5 | 109 | |
b0af6d49 | 110 | f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE); |
c75f2feb | 111 | f2fs_update_time(sbi, REQ_TIME); |
b0af6d49 | 112 | |
e943a10d | 113 | trace_f2fs_vm_page_mkwrite(page, DATA); |
5a3a2d83 QS |
114 | out_sem: |
115 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
39a86958 CY |
116 | |
117 | f2fs_balance_fs(sbi, dn.node_changed); | |
118 | ||
fbfa2cc5 | 119 | sb_end_pagefault(inode->i_sb); |
1f227a3e | 120 | err: |
fbfa2cc5 JK |
121 | return block_page_mkwrite_return(err); |
122 | } | |
123 | ||
124 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
5a3a2d83 | 125 | .fault = f2fs_filemap_fault, |
f1820361 | 126 | .map_pages = filemap_map_pages, |
692bb55d | 127 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
128 | }; |
129 | ||
354a3399 JK |
130 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
131 | { | |
132 | struct dentry *dentry; | |
133 | ||
134 | inode = igrab(inode); | |
135 | dentry = d_find_any_alias(inode); | |
136 | iput(inode); | |
137 | if (!dentry) | |
138 | return 0; | |
139 | ||
f0947e5c JK |
140 | *pino = parent_ino(dentry); |
141 | dput(dentry); | |
354a3399 JK |
142 | return 1; |
143 | } | |
144 | ||
a5fd5050 | 145 | static inline enum cp_reason_type need_do_checkpoint(struct inode *inode) |
9d1589ef | 146 | { |
4081363f | 147 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a5fd5050 | 148 | enum cp_reason_type cp_reason = CP_NO_NEEDED; |
9d1589ef | 149 | |
a5fd5050 CY |
150 | if (!S_ISREG(inode->i_mode)) |
151 | cp_reason = CP_NON_REGULAR; | |
152 | else if (inode->i_nlink != 1) | |
153 | cp_reason = CP_HARDLINK; | |
bbf156f7 | 154 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
a5fd5050 | 155 | cp_reason = CP_SB_NEED_CP; |
9d1589ef | 156 | else if (file_wrong_pino(inode)) |
a5fd5050 | 157 | cp_reason = CP_WRONG_PINO; |
4d57b86d | 158 | else if (!f2fs_space_for_roll_forward(sbi)) |
a5fd5050 | 159 | cp_reason = CP_NO_SPC_ROLL; |
4d57b86d | 160 | else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
a5fd5050 | 161 | cp_reason = CP_NODE_NEED_CP; |
d5053a34 | 162 | else if (test_opt(sbi, FASTBOOT)) |
a5fd5050 | 163 | cp_reason = CP_FASTBOOT_MODE; |
63189b78 | 164 | else if (F2FS_OPTION(sbi).active_logs == 2) |
a5fd5050 | 165 | cp_reason = CP_SPEC_LOG_NUM; |
63189b78 | 166 | else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT && |
4d57b86d CY |
167 | f2fs_need_dentry_mark(sbi, inode->i_ino) && |
168 | f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino, | |
169 | TRANS_DIR_INO)) | |
0a007b97 | 170 | cp_reason = CP_RECOVER_DIR; |
9d1589ef | 171 | |
a5fd5050 | 172 | return cp_reason; |
9d1589ef CY |
173 | } |
174 | ||
9c7bb702 CL |
175 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
176 | { | |
177 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
178 | bool ret = false; | |
179 | /* But we need to avoid that there are some inode updates */ | |
4d57b86d | 180 | if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino)) |
9c7bb702 CL |
181 | ret = true; |
182 | f2fs_put_page(i, 0); | |
183 | return ret; | |
184 | } | |
185 | ||
51455b19 CL |
186 | static void try_to_fix_pino(struct inode *inode) |
187 | { | |
188 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
189 | nid_t pino; | |
190 | ||
191 | down_write(&fi->i_sem); | |
51455b19 CL |
192 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
193 | get_parent_ino(inode, &pino)) { | |
205b9822 | 194 | f2fs_i_pino_write(inode, pino); |
51455b19 | 195 | file_got_pino(inode); |
51455b19 | 196 | } |
ee6d182f | 197 | up_write(&fi->i_sem); |
51455b19 CL |
198 | } |
199 | ||
608514de JK |
200 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
201 | int datasync, bool atomic) | |
fbfa2cc5 JK |
202 | { |
203 | struct inode *inode = file->f_mapping->host; | |
4081363f | 204 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 205 | nid_t ino = inode->i_ino; |
fbfa2cc5 | 206 | int ret = 0; |
a5fd5050 | 207 | enum cp_reason_type cp_reason = 0; |
fbfa2cc5 | 208 | struct writeback_control wbc = { |
c81bf1c8 | 209 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
210 | .nr_to_write = LONG_MAX, |
211 | .for_reclaim = 0, | |
212 | }; | |
50fa53ec | 213 | unsigned int seq_id = 0; |
fbfa2cc5 | 214 | |
4354994f DR |
215 | if (unlikely(f2fs_readonly(inode->i_sb) || |
216 | is_sbi_flag_set(sbi, SBI_CP_DISABLED))) | |
1fa95b0b NJ |
217 | return 0; |
218 | ||
a2a4a7e4 | 219 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c | 220 | |
b61ac5b7 YH |
221 | if (S_ISDIR(inode->i_mode)) |
222 | goto go_write; | |
223 | ||
ea1aa12c | 224 | /* if fdatasync is triggered, let's do in-place-update */ |
c46a155b | 225 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 226 | set_inode_flag(inode, FI_NEED_IPU); |
3b49c9a1 | 227 | ret = file_write_and_wait_range(file, start, end); |
91942321 | 228 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 229 | |
a2a4a7e4 | 230 | if (ret) { |
a5fd5050 | 231 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
fbfa2cc5 | 232 | return ret; |
a2a4a7e4 | 233 | } |
fbfa2cc5 | 234 | |
9c7bb702 | 235 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 236 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 237 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
238 | goto go_write; |
239 | } | |
240 | ||
6d99ba41 JK |
241 | /* |
242 | * if there is no written data, don't waste time to write recovery info. | |
243 | */ | |
91942321 | 244 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
4d57b86d | 245 | !f2fs_exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 246 | |
9c7bb702 CL |
247 | /* it may call write_inode just prior to fsync */ |
248 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 249 | goto go_write; |
19c9c466 | 250 | |
91942321 | 251 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
4d57b86d | 252 | f2fs_exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
253 | goto flush_out; |
254 | goto out; | |
255 | } | |
19c9c466 | 256 | go_write: |
e5d2385e JK |
257 | /* |
258 | * Both of fdatasync() and fsync() are able to be recovered from | |
259 | * sudden-power-off. | |
260 | */ | |
91942321 | 261 | down_read(&F2FS_I(inode)->i_sem); |
a5fd5050 | 262 | cp_reason = need_do_checkpoint(inode); |
91942321 | 263 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 264 | |
a5fd5050 | 265 | if (cp_reason) { |
fbfa2cc5 JK |
266 | /* all the dirty node pages should be flushed for POR */ |
267 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 268 | |
51455b19 CL |
269 | /* |
270 | * We've secured consistency through sync_fs. Following pino | |
271 | * will be used only for fsynced inodes after checkpoint. | |
272 | */ | |
273 | try_to_fix_pino(inode); | |
91942321 JK |
274 | clear_inode_flag(inode, FI_APPEND_WRITE); |
275 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
276 | goto out; |
277 | } | |
88bd02c9 | 278 | sync_nodes: |
c29fd0c0 | 279 | atomic_inc(&sbi->wb_sync_req[NODE]); |
50fa53ec | 280 | ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id); |
c29fd0c0 | 281 | atomic_dec(&sbi->wb_sync_req[NODE]); |
c267ec15 JK |
282 | if (ret) |
283 | goto out; | |
51455b19 | 284 | |
871f599f | 285 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
286 | if (unlikely(f2fs_cp_error(sbi))) { |
287 | ret = -EIO; | |
871f599f | 288 | goto out; |
6d5a1495 | 289 | } |
871f599f | 290 | |
4d57b86d | 291 | if (f2fs_need_inode_block_update(sbi, ino)) { |
7c45729a | 292 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
293 | f2fs_write_inode(inode, NULL); |
294 | goto sync_nodes; | |
fbfa2cc5 | 295 | } |
51455b19 | 296 | |
b6a245eb JK |
297 | /* |
298 | * If it's atomic_write, it's just fine to keep write ordering. So | |
299 | * here we don't need to wait for node write completion, since we use | |
300 | * node chain which serializes node blocks. If one of node writes are | |
301 | * reordered, we can see simply broken chain, resulting in stopping | |
302 | * roll-forward recovery. It means we'll recover all or none node blocks | |
303 | * given fsync mark. | |
304 | */ | |
305 | if (!atomic) { | |
50fa53ec | 306 | ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id); |
b6a245eb JK |
307 | if (ret) |
308 | goto out; | |
309 | } | |
51455b19 CL |
310 | |
311 | /* once recovery info is written, don't need to tack this */ | |
4d57b86d | 312 | f2fs_remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 313 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 314 | flush_out: |
d6290814 | 315 | if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) |
39d787be | 316 | ret = f2fs_issue_flush(sbi, inode->i_ino); |
3f06252f | 317 | if (!ret) { |
4d57b86d | 318 | f2fs_remove_ino_entry(sbi, ino, UPDATE_INO); |
3f06252f | 319 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
4d57b86d | 320 | f2fs_remove_ino_entry(sbi, ino, FLUSH_INO); |
3f06252f | 321 | } |
d0239e1b | 322 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 323 | out: |
a5fd5050 | 324 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
05ca3632 | 325 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
326 | return ret; |
327 | } | |
328 | ||
608514de JK |
329 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
330 | { | |
1f227a3e JK |
331 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file))))) |
332 | return -EIO; | |
608514de JK |
333 | return f2fs_do_sync_file(file, start, end, datasync, false); |
334 | } | |
335 | ||
7f7670fe JK |
336 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
337 | pgoff_t pgofs, int whence) | |
338 | { | |
8faab642 | 339 | struct page *page; |
7f7670fe JK |
340 | int nr_pages; |
341 | ||
342 | if (whence != SEEK_DATA) | |
343 | return 0; | |
344 | ||
345 | /* find first dirty page index */ | |
8faab642 JK |
346 | nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY, |
347 | 1, &page); | |
348 | if (!nr_pages) | |
349 | return ULONG_MAX; | |
350 | pgofs = page->index; | |
351 | put_page(page); | |
7f7670fe JK |
352 | return pgofs; |
353 | } | |
354 | ||
e1da7872 CY |
355 | static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr, |
356 | pgoff_t dirty, pgoff_t pgofs, int whence) | |
7f7670fe JK |
357 | { |
358 | switch (whence) { | |
359 | case SEEK_DATA: | |
360 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
93770ab7 | 361 | __is_valid_data_blkaddr(blkaddr)) |
7f7670fe JK |
362 | return true; |
363 | break; | |
364 | case SEEK_HOLE: | |
365 | if (blkaddr == NULL_ADDR) | |
366 | return true; | |
367 | break; | |
368 | } | |
369 | return false; | |
370 | } | |
371 | ||
267378d4 CY |
372 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
373 | { | |
374 | struct inode *inode = file->f_mapping->host; | |
375 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
376 | struct dnode_of_data dn; | |
7f7670fe JK |
377 | pgoff_t pgofs, end_offset, dirty; |
378 | loff_t data_ofs = offset; | |
379 | loff_t isize; | |
267378d4 CY |
380 | int err = 0; |
381 | ||
5955102c | 382 | inode_lock(inode); |
267378d4 CY |
383 | |
384 | isize = i_size_read(inode); | |
385 | if (offset >= isize) | |
386 | goto fail; | |
387 | ||
388 | /* handle inline data case */ | |
622f28ae | 389 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
390 | if (whence == SEEK_HOLE) |
391 | data_ofs = isize; | |
392 | goto found; | |
393 | } | |
394 | ||
09cbfeaf | 395 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 396 | |
7f7670fe JK |
397 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
398 | ||
09cbfeaf | 399 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 400 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 401 | err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
402 | if (err && err != -ENOENT) { |
403 | goto fail; | |
404 | } else if (err == -ENOENT) { | |
e1c42045 | 405 | /* direct node does not exists */ |
267378d4 | 406 | if (whence == SEEK_DATA) { |
4d57b86d | 407 | pgofs = f2fs_get_next_page_offset(&dn, pgofs); |
267378d4 CY |
408 | continue; |
409 | } else { | |
410 | goto found; | |
411 | } | |
412 | } | |
413 | ||
81ca7350 | 414 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
415 | |
416 | /* find data/hole in dnode block */ | |
417 | for (; dn.ofs_in_node < end_offset; | |
418 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 419 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 420 | block_t blkaddr; |
f11e98bd | 421 | |
7a2af766 CY |
422 | blkaddr = datablock_addr(dn.inode, |
423 | dn.node_page, dn.ofs_in_node); | |
267378d4 | 424 | |
c9b60788 CY |
425 | if (__is_valid_data_blkaddr(blkaddr) && |
426 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
93770ab7 | 427 | blkaddr, DATA_GENERIC_ENHANCE)) { |
c9b60788 CY |
428 | f2fs_put_dnode(&dn); |
429 | goto fail; | |
430 | } | |
431 | ||
e1da7872 CY |
432 | if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty, |
433 | pgofs, whence)) { | |
267378d4 CY |
434 | f2fs_put_dnode(&dn); |
435 | goto found; | |
436 | } | |
437 | } | |
438 | f2fs_put_dnode(&dn); | |
439 | } | |
440 | ||
441 | if (whence == SEEK_DATA) | |
442 | goto fail; | |
267378d4 | 443 | found: |
fe369bc8 JK |
444 | if (whence == SEEK_HOLE && data_ofs > isize) |
445 | data_ofs = isize; | |
5955102c | 446 | inode_unlock(inode); |
267378d4 CY |
447 | return vfs_setpos(file, data_ofs, maxbytes); |
448 | fail: | |
5955102c | 449 | inode_unlock(inode); |
267378d4 CY |
450 | return -ENXIO; |
451 | } | |
452 | ||
453 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
454 | { | |
455 | struct inode *inode = file->f_mapping->host; | |
456 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
457 | ||
458 | switch (whence) { | |
459 | case SEEK_SET: | |
460 | case SEEK_CUR: | |
461 | case SEEK_END: | |
462 | return generic_file_llseek_size(file, offset, whence, | |
463 | maxbytes, i_size_read(inode)); | |
464 | case SEEK_DATA: | |
465 | case SEEK_HOLE: | |
0b4c5afd JK |
466 | if (offset < 0) |
467 | return -ENXIO; | |
267378d4 CY |
468 | return f2fs_seek_block(file, offset, whence); |
469 | } | |
470 | ||
471 | return -EINVAL; | |
472 | } | |
473 | ||
fbfa2cc5 JK |
474 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
475 | { | |
b3d208f9 | 476 | struct inode *inode = file_inode(file); |
b9d777b8 | 477 | int err; |
b3d208f9 | 478 | |
1f227a3e JK |
479 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
480 | return -EIO; | |
481 | ||
b3d208f9 | 482 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
483 | err = f2fs_convert_inline_inode(inode); |
484 | if (err) | |
485 | return err; | |
b3d208f9 | 486 | |
fbfa2cc5 JK |
487 | file_accessed(file); |
488 | vma->vm_ops = &f2fs_file_vm_ops; | |
489 | return 0; | |
490 | } | |
491 | ||
fcc85a4d JK |
492 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
493 | { | |
2e168c82 | 494 | int err = fscrypt_file_open(inode, filp); |
fcc85a4d | 495 | |
2e168c82 EB |
496 | if (err) |
497 | return err; | |
b91050a8 HL |
498 | |
499 | filp->f_mode |= FMODE_NOWAIT; | |
500 | ||
0abd675e | 501 | return dquot_file_open(inode, filp); |
fcc85a4d JK |
502 | } |
503 | ||
4d57b86d | 504 | void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 505 | { |
4081363f | 506 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 507 | struct f2fs_node *raw_node; |
19b2c30d | 508 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 | 509 | __le32 *addr; |
7a2af766 CY |
510 | int base = 0; |
511 | ||
512 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
513 | base = get_extra_isize(dn->inode); | |
fbfa2cc5 | 514 | |
45590710 | 515 | raw_node = F2FS_NODE(dn->node_page); |
7a2af766 | 516 | addr = blkaddr_in_node(raw_node) + base + ofs; |
fbfa2cc5 | 517 | |
6c311ec6 | 518 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 | 519 | block_t blkaddr = le32_to_cpu(*addr); |
f11e98bd | 520 | |
fbfa2cc5 JK |
521 | if (blkaddr == NULL_ADDR) |
522 | continue; | |
523 | ||
e1509cf2 | 524 | dn->data_blkaddr = NULL_ADDR; |
4d57b86d | 525 | f2fs_set_data_blkaddr(dn); |
c9b60788 CY |
526 | |
527 | if (__is_valid_data_blkaddr(blkaddr) && | |
93770ab7 CY |
528 | !f2fs_is_valid_blkaddr(sbi, blkaddr, |
529 | DATA_GENERIC_ENHANCE)) | |
c9b60788 CY |
530 | continue; |
531 | ||
4d57b86d | 532 | f2fs_invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 533 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 534 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
535 | nr_free++; |
536 | } | |
19b2c30d | 537 | |
fbfa2cc5 | 538 | if (nr_free) { |
19b2c30d CY |
539 | pgoff_t fofs; |
540 | /* | |
541 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
542 | * we will invalidate all blkaddr in the whole range. | |
543 | */ | |
4d57b86d | 544 | fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), |
81ca7350 | 545 | dn->inode) + ofs; |
19b2c30d | 546 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 547 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
548 | } |
549 | dn->ofs_in_node = ofs; | |
51dd6249 | 550 | |
d0239e1b | 551 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
552 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
553 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
554 | } |
555 | ||
4d57b86d | 556 | void f2fs_truncate_data_blocks(struct dnode_of_data *dn) |
fbfa2cc5 | 557 | { |
d02a6e61 | 558 | f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode)); |
fbfa2cc5 JK |
559 | } |
560 | ||
0bfcfcca | 561 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 562 | bool cache_only) |
fbfa2cc5 | 563 | { |
193bea1d | 564 | loff_t offset = from & (PAGE_SIZE - 1); |
09cbfeaf | 565 | pgoff_t index = from >> PAGE_SHIFT; |
43f3eae1 | 566 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
567 | struct page *page; |
568 | ||
43f3eae1 | 569 | if (!offset && !cache_only) |
b3d208f9 | 570 | return 0; |
fbfa2cc5 | 571 | |
43f3eae1 | 572 | if (cache_only) { |
34b5d5c2 | 573 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
574 | if (page && PageUptodate(page)) |
575 | goto truncate_out; | |
576 | f2fs_put_page(page, 1); | |
b3d208f9 | 577 | return 0; |
43f3eae1 | 578 | } |
fbfa2cc5 | 579 | |
4d57b86d | 580 | page = f2fs_get_lock_data_page(inode, index, true); |
43f3eae1 | 581 | if (IS_ERR(page)) |
a78aaa2c | 582 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 583 | truncate_out: |
bae0ee7a | 584 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
09cbfeaf | 585 | zero_user(page, offset, PAGE_SIZE - offset); |
a9bcf9bc JK |
586 | |
587 | /* An encrypted inode should have a key and truncate the last page. */ | |
62230e0d | 588 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode)); |
a9bcf9bc | 589 | if (!cache_only) |
0bfcfcca | 590 | set_page_dirty(page); |
fbfa2cc5 | 591 | f2fs_put_page(page, 1); |
b3d208f9 | 592 | return 0; |
fbfa2cc5 JK |
593 | } |
594 | ||
c42d28ce | 595 | int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 596 | { |
4081363f | 597 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
598 | struct dnode_of_data dn; |
599 | pgoff_t free_from; | |
9ffe0fb5 | 600 | int count = 0, err = 0; |
b3d208f9 | 601 | struct page *ipage; |
0bfcfcca | 602 | bool truncate_page = false; |
fbfa2cc5 | 603 | |
51dd6249 NJ |
604 | trace_f2fs_truncate_blocks_enter(inode, from); |
605 | ||
df033caf | 606 | free_from = (pgoff_t)F2FS_BLK_ALIGN(from); |
fbfa2cc5 | 607 | |
09210c97 CY |
608 | if (free_from >= sbi->max_file_blocks) |
609 | goto free_partial; | |
610 | ||
764aa3e9 | 611 | if (lock) |
c42d28ce | 612 | f2fs_lock_op(sbi); |
9ffe0fb5 | 613 | |
4d57b86d | 614 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
b3d208f9 JK |
615 | if (IS_ERR(ipage)) { |
616 | err = PTR_ERR(ipage); | |
617 | goto out; | |
618 | } | |
619 | ||
620 | if (f2fs_has_inline_data(inode)) { | |
4d57b86d | 621 | f2fs_truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 622 | f2fs_put_page(ipage, 1); |
0bfcfcca | 623 | truncate_page = true; |
b3d208f9 JK |
624 | goto out; |
625 | } | |
626 | ||
627 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
4d57b86d | 628 | err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
629 | if (err) { |
630 | if (err == -ENOENT) | |
631 | goto free_next; | |
b3d208f9 | 632 | goto out; |
1ce86bf6 JK |
633 | } |
634 | ||
81ca7350 | 635 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
636 | |
637 | count -= dn.ofs_in_node; | |
9850cf4a | 638 | f2fs_bug_on(sbi, count < 0); |
39936837 | 639 | |
fbfa2cc5 | 640 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
4d57b86d | 641 | f2fs_truncate_data_blocks_range(&dn, count); |
fbfa2cc5 JK |
642 | free_from += count; |
643 | } | |
644 | ||
645 | f2fs_put_dnode(&dn); | |
646 | free_next: | |
4d57b86d | 647 | err = f2fs_truncate_inode_blocks(inode, free_from); |
764d2c80 JK |
648 | out: |
649 | if (lock) | |
c42d28ce | 650 | f2fs_unlock_op(sbi); |
09210c97 | 651 | free_partial: |
b3d208f9 JK |
652 | /* lastly zero out the first data page */ |
653 | if (!err) | |
0bfcfcca | 654 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 655 | |
51dd6249 | 656 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
657 | return err; |
658 | } | |
659 | ||
9a449e9c | 660 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 661 | { |
b0154891 CY |
662 | int err; |
663 | ||
1f227a3e JK |
664 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
665 | return -EIO; | |
666 | ||
fbfa2cc5 JK |
667 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
668 | S_ISLNK(inode->i_mode))) | |
b0154891 | 669 | return 0; |
fbfa2cc5 | 670 | |
51dd6249 NJ |
671 | trace_f2fs_truncate(inode); |
672 | ||
14b44d23 JK |
673 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { |
674 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
675 | return -EIO; | |
676 | } | |
7fa750a1 | 677 | |
92dffd01 | 678 | /* we should check inline_data size */ |
b9d777b8 | 679 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
680 | err = f2fs_convert_inline_inode(inode); |
681 | if (err) | |
682 | return err; | |
92dffd01 JK |
683 | } |
684 | ||
c42d28ce | 685 | err = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
686 | if (err) |
687 | return err; | |
688 | ||
078cd827 | 689 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 690 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 691 | return 0; |
fbfa2cc5 JK |
692 | } |
693 | ||
a528d35e | 694 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
1c6d8ee4 | 695 | u32 request_mask, unsigned int query_flags) |
fbfa2cc5 | 696 | { |
a528d35e | 697 | struct inode *inode = d_inode(path->dentry); |
1c6d8ee4 | 698 | struct f2fs_inode_info *fi = F2FS_I(inode); |
1c1d35df | 699 | struct f2fs_inode *ri; |
1c6d8ee4 CY |
700 | unsigned int flags; |
701 | ||
1c1d35df | 702 | if (f2fs_has_extra_attr(inode) && |
7beb01f7 | 703 | f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) && |
1c1d35df CY |
704 | F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { |
705 | stat->result_mask |= STATX_BTIME; | |
706 | stat->btime.tv_sec = fi->i_crtime.tv_sec; | |
707 | stat->btime.tv_nsec = fi->i_crtime.tv_nsec; | |
708 | } | |
709 | ||
c807a7cb | 710 | flags = fi->i_flags & F2FS_FL_USER_VISIBLE; |
59c84408 | 711 | if (flags & F2FS_APPEND_FL) |
1c6d8ee4 | 712 | stat->attributes |= STATX_ATTR_APPEND; |
59c84408 | 713 | if (flags & F2FS_COMPR_FL) |
1c6d8ee4 | 714 | stat->attributes |= STATX_ATTR_COMPRESSED; |
62230e0d | 715 | if (IS_ENCRYPTED(inode)) |
1c6d8ee4 | 716 | stat->attributes |= STATX_ATTR_ENCRYPTED; |
59c84408 | 717 | if (flags & F2FS_IMMUTABLE_FL) |
1c6d8ee4 | 718 | stat->attributes |= STATX_ATTR_IMMUTABLE; |
59c84408 | 719 | if (flags & F2FS_NODUMP_FL) |
1c6d8ee4 CY |
720 | stat->attributes |= STATX_ATTR_NODUMP; |
721 | ||
722 | stat->attributes_mask |= (STATX_ATTR_APPEND | | |
723 | STATX_ATTR_COMPRESSED | | |
724 | STATX_ATTR_ENCRYPTED | | |
725 | STATX_ATTR_IMMUTABLE | | |
726 | STATX_ATTR_NODUMP); | |
727 | ||
fbfa2cc5 | 728 | generic_fillattr(inode, stat); |
5b4267d1 JK |
729 | |
730 | /* we need to show initial sectors used for inline_data/dentries */ | |
731 | if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || | |
732 | f2fs_has_inline_dentry(inode)) | |
733 | stat->blocks += (stat->size + 511) >> 9; | |
734 | ||
fbfa2cc5 JK |
735 | return 0; |
736 | } | |
737 | ||
738 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
739 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
740 | { | |
fbfa2cc5 JK |
741 | unsigned int ia_valid = attr->ia_valid; |
742 | ||
743 | if (ia_valid & ATTR_UID) | |
744 | inode->i_uid = attr->ia_uid; | |
745 | if (ia_valid & ATTR_GID) | |
746 | inode->i_gid = attr->ia_gid; | |
747 | if (ia_valid & ATTR_ATIME) | |
95582b00 DD |
748 | inode->i_atime = timespec64_trunc(attr->ia_atime, |
749 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 750 | if (ia_valid & ATTR_MTIME) |
95582b00 DD |
751 | inode->i_mtime = timespec64_trunc(attr->ia_mtime, |
752 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 753 | if (ia_valid & ATTR_CTIME) |
95582b00 DD |
754 | inode->i_ctime = timespec64_trunc(attr->ia_ctime, |
755 | inode->i_sb->s_time_gran); | |
fbfa2cc5 JK |
756 | if (ia_valid & ATTR_MODE) { |
757 | umode_t mode = attr->ia_mode; | |
758 | ||
759 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
760 | mode &= ~S_ISGID; | |
91942321 | 761 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
762 | } |
763 | } | |
764 | #else | |
765 | #define __setattr_copy setattr_copy | |
766 | #endif | |
767 | ||
768 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
769 | { | |
2b0143b5 | 770 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 JK |
771 | int err; |
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); | |
fbfa2cc5 JK |
846 | } |
847 | ||
848 | __setattr_copy(inode, attr); | |
849 | ||
850 | if (attr->ia_valid & ATTR_MODE) { | |
4d57b86d | 851 | err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode)); |
91942321 JK |
852 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
853 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
854 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
855 | } |
856 | } | |
857 | ||
c0ed4405 | 858 | /* file size may changed here */ |
ca597bdd | 859 | f2fs_mark_inode_dirty_sync(inode, true); |
15d04354 JK |
860 | |
861 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
862 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
863 | ||
fbfa2cc5 JK |
864 | return err; |
865 | } | |
866 | ||
867 | const struct inode_operations f2fs_file_inode_operations = { | |
868 | .getattr = f2fs_getattr, | |
869 | .setattr = f2fs_setattr, | |
870 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 871 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 872 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 873 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 874 | #endif |
9ab70134 | 875 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
876 | }; |
877 | ||
6394328a | 878 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
879 | loff_t start, loff_t len) |
880 | { | |
4081363f | 881 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
882 | struct page *page; |
883 | ||
884 | if (!len) | |
6394328a | 885 | return 0; |
fbfa2cc5 | 886 | |
2c4db1a6 | 887 | f2fs_balance_fs(sbi, true); |
bd43df02 | 888 | |
e479556b | 889 | f2fs_lock_op(sbi); |
4d57b86d | 890 | page = f2fs_get_new_data_page(inode, NULL, index, false); |
e479556b | 891 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 892 | |
6394328a CY |
893 | if (IS_ERR(page)) |
894 | return PTR_ERR(page); | |
895 | ||
bae0ee7a | 896 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
6394328a CY |
897 | zero_user(page, start, len); |
898 | set_page_dirty(page); | |
899 | f2fs_put_page(page, 1); | |
900 | return 0; | |
fbfa2cc5 JK |
901 | } |
902 | ||
4d57b86d | 903 | int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
fbfa2cc5 | 904 | { |
fbfa2cc5 JK |
905 | int err; |
906 | ||
ea58711e | 907 | while (pg_start < pg_end) { |
fbfa2cc5 | 908 | struct dnode_of_data dn; |
ea58711e | 909 | pgoff_t end_offset, count; |
9eaeba70 | 910 | |
fbfa2cc5 | 911 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 912 | err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 913 | if (err) { |
ea58711e | 914 | if (err == -ENOENT) { |
4d57b86d CY |
915 | pg_start = f2fs_get_next_page_offset(&dn, |
916 | pg_start); | |
fbfa2cc5 | 917 | continue; |
ea58711e | 918 | } |
fbfa2cc5 JK |
919 | return err; |
920 | } | |
921 | ||
81ca7350 | 922 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
923 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
924 | ||
925 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
926 | ||
4d57b86d | 927 | f2fs_truncate_data_blocks_range(&dn, count); |
fbfa2cc5 | 928 | f2fs_put_dnode(&dn); |
ea58711e CY |
929 | |
930 | pg_start += count; | |
fbfa2cc5 JK |
931 | } |
932 | return 0; | |
933 | } | |
934 | ||
a66c7b2f | 935 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
936 | { |
937 | pgoff_t pg_start, pg_end; | |
938 | loff_t off_start, off_end; | |
b9d777b8 | 939 | int ret; |
fbfa2cc5 | 940 | |
b9d777b8 JK |
941 | ret = f2fs_convert_inline_inode(inode); |
942 | if (ret) | |
943 | return ret; | |
9ffe0fb5 | 944 | |
09cbfeaf KS |
945 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
946 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 947 | |
09cbfeaf KS |
948 | off_start = offset & (PAGE_SIZE - 1); |
949 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
950 | |
951 | if (pg_start == pg_end) { | |
6394328a | 952 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 953 | off_end - off_start); |
6394328a CY |
954 | if (ret) |
955 | return ret; | |
fbfa2cc5 | 956 | } else { |
6394328a CY |
957 | if (off_start) { |
958 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 959 | PAGE_SIZE - off_start); |
6394328a CY |
960 | if (ret) |
961 | return ret; | |
962 | } | |
963 | if (off_end) { | |
964 | ret = fill_zero(inode, pg_end, 0, off_end); | |
965 | if (ret) | |
966 | return ret; | |
967 | } | |
fbfa2cc5 JK |
968 | |
969 | if (pg_start < pg_end) { | |
970 | struct address_space *mapping = inode->i_mapping; | |
971 | loff_t blk_start, blk_end; | |
4081363f | 972 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 973 | |
2c4db1a6 | 974 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 975 | |
09cbfeaf KS |
976 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
977 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
a33c1502 | 978 | |
a33c1502 | 979 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 980 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 | 981 | |
fbfa2cc5 JK |
982 | truncate_inode_pages_range(mapping, blk_start, |
983 | blk_end - 1); | |
39936837 | 984 | |
e479556b | 985 | f2fs_lock_op(sbi); |
4d57b86d | 986 | ret = f2fs_truncate_hole(inode, pg_start, pg_end); |
e479556b | 987 | f2fs_unlock_op(sbi); |
a33c1502 | 988 | |
5a3a2d83 | 989 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 990 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
fbfa2cc5 JK |
991 | } |
992 | } | |
993 | ||
fbfa2cc5 JK |
994 | return ret; |
995 | } | |
996 | ||
0a2aa8fb JK |
997 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
998 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
999 | { |
1000 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1001 | struct dnode_of_data dn; | |
0a2aa8fb | 1002 | int ret, done, i; |
ecbaa406 | 1003 | |
0a2aa8fb | 1004 | next_dnode: |
6e2c64ad | 1005 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1006 | ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
1007 | if (ret && ret != -ENOENT) { |
1008 | return ret; | |
1009 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
1010 | if (dn.max_level == 0) |
1011 | return -ENOENT; | |
d02a6e61 CY |
1012 | done = min((pgoff_t)ADDRS_PER_BLOCK(inode) - dn.ofs_in_node, |
1013 | len); | |
0a2aa8fb JK |
1014 | blkaddr += done; |
1015 | do_replace += done; | |
1016 | goto next; | |
1017 | } | |
1018 | ||
1019 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
1020 | dn.ofs_in_node, len); | |
1021 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
7a2af766 CY |
1022 | *blkaddr = datablock_addr(dn.inode, |
1023 | dn.node_page, dn.ofs_in_node); | |
93770ab7 CY |
1024 | |
1025 | if (__is_valid_data_blkaddr(*blkaddr) && | |
1026 | !f2fs_is_valid_blkaddr(sbi, *blkaddr, | |
1027 | DATA_GENERIC_ENHANCE)) { | |
1028 | f2fs_put_dnode(&dn); | |
1029 | return -EFAULT; | |
1030 | } | |
1031 | ||
4d57b86d | 1032 | if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) { |
0a2aa8fb JK |
1033 | |
1034 | if (test_opt(sbi, LFS)) { | |
1035 | f2fs_put_dnode(&dn); | |
1036 | return -ENOTSUPP; | |
1037 | } | |
1038 | ||
6e2c64ad | 1039 | /* do not invalidate this block address */ |
f28b3434 | 1040 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 1041 | *do_replace = 1; |
b4ace337 | 1042 | } |
6e2c64ad | 1043 | } |
0a2aa8fb JK |
1044 | f2fs_put_dnode(&dn); |
1045 | next: | |
1046 | len -= done; | |
1047 | off += done; | |
1048 | if (len) | |
1049 | goto next_dnode; | |
1050 | return 0; | |
1051 | } | |
b4ace337 | 1052 | |
0a2aa8fb JK |
1053 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
1054 | int *do_replace, pgoff_t off, int len) | |
1055 | { | |
1056 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1057 | struct dnode_of_data dn; | |
1058 | int ret, i; | |
b4ace337 | 1059 | |
0a2aa8fb JK |
1060 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
1061 | if (*do_replace == 0) | |
1062 | continue; | |
b4ace337 | 1063 | |
0a2aa8fb | 1064 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1065 | ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); |
0a2aa8fb JK |
1066 | if (ret) { |
1067 | dec_valid_block_count(sbi, inode, 1); | |
4d57b86d | 1068 | f2fs_invalidate_blocks(sbi, *blkaddr); |
0a2aa8fb JK |
1069 | } else { |
1070 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 1071 | } |
0a2aa8fb JK |
1072 | f2fs_put_dnode(&dn); |
1073 | } | |
1074 | return 0; | |
1075 | } | |
1076 | ||
1077 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
1078 | block_t *blkaddr, int *do_replace, | |
1079 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
1080 | { | |
1081 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
1082 | pgoff_t i = 0; | |
1083 | int ret; | |
36abef4e | 1084 | |
0a2aa8fb JK |
1085 | while (i < len) { |
1086 | if (blkaddr[i] == NULL_ADDR && !full) { | |
1087 | i++; | |
1088 | continue; | |
6e2c64ad | 1089 | } |
b4ace337 | 1090 | |
0a2aa8fb JK |
1091 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
1092 | struct dnode_of_data dn; | |
1093 | struct node_info ni; | |
1094 | size_t new_size; | |
1095 | pgoff_t ilen; | |
b4ace337 | 1096 | |
0a2aa8fb | 1097 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
4d57b86d | 1098 | ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE); |
0a2aa8fb JK |
1099 | if (ret) |
1100 | return ret; | |
b4ace337 | 1101 | |
7735730d CY |
1102 | ret = f2fs_get_node_info(sbi, dn.nid, &ni); |
1103 | if (ret) { | |
1104 | f2fs_put_dnode(&dn); | |
1105 | return ret; | |
1106 | } | |
1107 | ||
0a2aa8fb JK |
1108 | ilen = min((pgoff_t) |
1109 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
1110 | dn.ofs_in_node, len - i); | |
1111 | do { | |
7a2af766 CY |
1112 | dn.data_blkaddr = datablock_addr(dn.inode, |
1113 | dn.node_page, dn.ofs_in_node); | |
4d57b86d | 1114 | f2fs_truncate_data_blocks_range(&dn, 1); |
0a2aa8fb JK |
1115 | |
1116 | if (do_replace[i]) { | |
1117 | f2fs_i_blocks_write(src_inode, | |
0abd675e | 1118 | 1, false, false); |
0a2aa8fb | 1119 | f2fs_i_blocks_write(dst_inode, |
0abd675e | 1120 | 1, true, false); |
0a2aa8fb JK |
1121 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
1122 | blkaddr[i], ni.version, true, false); | |
1123 | ||
1124 | do_replace[i] = 0; | |
1125 | } | |
1126 | dn.ofs_in_node++; | |
1127 | i++; | |
1128 | new_size = (dst + i) << PAGE_SHIFT; | |
1129 | if (dst_inode->i_size < new_size) | |
1130 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 1131 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1132 | |
0a2aa8fb JK |
1133 | f2fs_put_dnode(&dn); |
1134 | } else { | |
1135 | struct page *psrc, *pdst; | |
1136 | ||
4d57b86d CY |
1137 | psrc = f2fs_get_lock_data_page(src_inode, |
1138 | src + i, true); | |
0a2aa8fb JK |
1139 | if (IS_ERR(psrc)) |
1140 | return PTR_ERR(psrc); | |
4d57b86d | 1141 | pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i, |
0a2aa8fb JK |
1142 | true); |
1143 | if (IS_ERR(pdst)) { | |
1144 | f2fs_put_page(psrc, 1); | |
1145 | return PTR_ERR(pdst); | |
1146 | } | |
1147 | f2fs_copy_page(psrc, pdst); | |
1148 | set_page_dirty(pdst); | |
1149 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1150 | f2fs_put_page(psrc, 1); |
b4ace337 | 1151 | |
4d57b86d CY |
1152 | ret = f2fs_truncate_hole(src_inode, |
1153 | src + i, src + i + 1); | |
0a2aa8fb JK |
1154 | if (ret) |
1155 | return ret; | |
1156 | i++; | |
1157 | } | |
6e2c64ad JK |
1158 | } |
1159 | return 0; | |
0a2aa8fb | 1160 | } |
b4ace337 | 1161 | |
0a2aa8fb JK |
1162 | static int __exchange_data_block(struct inode *src_inode, |
1163 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1164 | pgoff_t len, bool full) |
0a2aa8fb JK |
1165 | { |
1166 | block_t *src_blkaddr; | |
1167 | int *do_replace; | |
363cad7f | 1168 | pgoff_t olen; |
0a2aa8fb JK |
1169 | int ret; |
1170 | ||
363cad7f | 1171 | while (len) { |
d02a6e61 | 1172 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len); |
0a2aa8fb | 1173 | |
628b3d14 | 1174 | src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
9d2a789c KC |
1175 | array_size(olen, sizeof(block_t)), |
1176 | GFP_KERNEL); | |
363cad7f JK |
1177 | if (!src_blkaddr) |
1178 | return -ENOMEM; | |
0a2aa8fb | 1179 | |
628b3d14 | 1180 | do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
9d2a789c KC |
1181 | array_size(olen, sizeof(int)), |
1182 | GFP_KERNEL); | |
363cad7f JK |
1183 | if (!do_replace) { |
1184 | kvfree(src_blkaddr); | |
1185 | return -ENOMEM; | |
1186 | } | |
0a2aa8fb | 1187 | |
363cad7f JK |
1188 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1189 | do_replace, src, olen); | |
1190 | if (ret) | |
1191 | goto roll_back; | |
0a2aa8fb | 1192 | |
363cad7f JK |
1193 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1194 | do_replace, src, dst, olen, full); | |
1195 | if (ret) | |
1196 | goto roll_back; | |
1197 | ||
1198 | src += olen; | |
1199 | dst += olen; | |
1200 | len -= olen; | |
1201 | ||
1202 | kvfree(src_blkaddr); | |
1203 | kvfree(do_replace); | |
1204 | } | |
0a2aa8fb JK |
1205 | return 0; |
1206 | ||
1207 | roll_back: | |
9fd62605 | 1208 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen); |
0a2aa8fb JK |
1209 | kvfree(src_blkaddr); |
1210 | kvfree(do_replace); | |
6e2c64ad JK |
1211 | return ret; |
1212 | } | |
b4ace337 | 1213 | |
6f8d4455 | 1214 | static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len) |
6e2c64ad JK |
1215 | { |
1216 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1217 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
6f8d4455 JK |
1218 | pgoff_t start = offset >> PAGE_SHIFT; |
1219 | pgoff_t end = (offset + len) >> PAGE_SHIFT; | |
0a2aa8fb | 1220 | int ret; |
6e2c64ad | 1221 | |
0a2aa8fb | 1222 | f2fs_balance_fs(sbi, true); |
5f281fab | 1223 | |
6f8d4455 JK |
1224 | /* avoid gc operation during block exchange */ |
1225 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
1226 | down_write(&F2FS_I(inode)->i_mmap_sem); | |
5f281fab | 1227 | |
6f8d4455 JK |
1228 | f2fs_lock_op(sbi); |
1229 | f2fs_drop_extent_tree(inode); | |
1230 | truncate_pagecache(inode, offset); | |
0a2aa8fb JK |
1231 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1232 | f2fs_unlock_op(sbi); | |
6f8d4455 JK |
1233 | |
1234 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
1235 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
b4ace337 CY |
1236 | return ret; |
1237 | } | |
1238 | ||
1239 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1240 | { | |
b4ace337 CY |
1241 | loff_t new_size; |
1242 | int ret; | |
1243 | ||
b4ace337 CY |
1244 | if (offset + len >= i_size_read(inode)) |
1245 | return -EINVAL; | |
1246 | ||
1247 | /* collapse range should be aligned to block size of f2fs. */ | |
1248 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1249 | return -EINVAL; | |
1250 | ||
b9d777b8 JK |
1251 | ret = f2fs_convert_inline_inode(inode); |
1252 | if (ret) | |
1253 | return ret; | |
97a7b2c2 | 1254 | |
b4ace337 CY |
1255 | /* write out all dirty pages from offset */ |
1256 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1257 | if (ret) | |
6f8d4455 | 1258 | return ret; |
b4ace337 | 1259 | |
6f8d4455 | 1260 | ret = f2fs_do_collapse(inode, offset, len); |
b4ace337 | 1261 | if (ret) |
6f8d4455 | 1262 | return ret; |
b4ace337 | 1263 | |
6e2c64ad | 1264 | /* write out all moved pages, if possible */ |
6f8d4455 | 1265 | down_write(&F2FS_I(inode)->i_mmap_sem); |
6e2c64ad JK |
1266 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
1267 | truncate_pagecache(inode, offset); | |
1268 | ||
b4ace337 | 1269 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1270 | truncate_pagecache(inode, new_size); |
b4ace337 | 1271 | |
c42d28ce | 1272 | ret = f2fs_truncate_blocks(inode, new_size, true); |
6f8d4455 | 1273 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 | 1274 | if (!ret) |
fc9581c8 | 1275 | f2fs_i_size_write(inode, new_size); |
b4ace337 CY |
1276 | return ret; |
1277 | } | |
1278 | ||
6e961949 CY |
1279 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1280 | pgoff_t end) | |
1281 | { | |
1282 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1283 | pgoff_t index = start; | |
1284 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1285 | blkcnt_t count = 0; | |
1286 | int ret; | |
1287 | ||
1288 | for (; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1289 | if (datablock_addr(dn->inode, dn->node_page, |
1290 | dn->ofs_in_node) == NULL_ADDR) | |
6e961949 CY |
1291 | count++; |
1292 | } | |
1293 | ||
1294 | dn->ofs_in_node = ofs_in_node; | |
4d57b86d | 1295 | ret = f2fs_reserve_new_blocks(dn, count); |
6e961949 CY |
1296 | if (ret) |
1297 | return ret; | |
1298 | ||
1299 | dn->ofs_in_node = ofs_in_node; | |
1300 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1301 | dn->data_blkaddr = datablock_addr(dn->inode, |
1302 | dn->node_page, dn->ofs_in_node); | |
6e961949 | 1303 | /* |
4d57b86d | 1304 | * f2fs_reserve_new_blocks will not guarantee entire block |
6e961949 CY |
1305 | * allocation. |
1306 | */ | |
1307 | if (dn->data_blkaddr == NULL_ADDR) { | |
1308 | ret = -ENOSPC; | |
1309 | break; | |
1310 | } | |
1311 | if (dn->data_blkaddr != NEW_ADDR) { | |
4d57b86d | 1312 | f2fs_invalidate_blocks(sbi, dn->data_blkaddr); |
6e961949 | 1313 | dn->data_blkaddr = NEW_ADDR; |
4d57b86d | 1314 | f2fs_set_data_blkaddr(dn); |
6e961949 CY |
1315 | } |
1316 | } | |
1317 | ||
1318 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1319 | ||
1320 | return ret; | |
1321 | } | |
1322 | ||
75cd4e09 CY |
1323 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1324 | int mode) | |
1325 | { | |
1326 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1327 | struct address_space *mapping = inode->i_mapping; | |
1328 | pgoff_t index, pg_start, pg_end; | |
1329 | loff_t new_size = i_size_read(inode); | |
1330 | loff_t off_start, off_end; | |
1331 | int ret = 0; | |
1332 | ||
75cd4e09 CY |
1333 | ret = inode_newsize_ok(inode, (len + offset)); |
1334 | if (ret) | |
1335 | return ret; | |
1336 | ||
b9d777b8 JK |
1337 | ret = f2fs_convert_inline_inode(inode); |
1338 | if (ret) | |
1339 | return ret; | |
75cd4e09 CY |
1340 | |
1341 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); | |
1342 | if (ret) | |
6f8d4455 | 1343 | return ret; |
75cd4e09 | 1344 | |
09cbfeaf KS |
1345 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1346 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1347 | |
09cbfeaf KS |
1348 | off_start = offset & (PAGE_SIZE - 1); |
1349 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1350 | |
1351 | if (pg_start == pg_end) { | |
6394328a CY |
1352 | ret = fill_zero(inode, pg_start, off_start, |
1353 | off_end - off_start); | |
1354 | if (ret) | |
6f8d4455 | 1355 | return ret; |
6394328a | 1356 | |
75cd4e09 CY |
1357 | new_size = max_t(loff_t, new_size, offset + len); |
1358 | } else { | |
1359 | if (off_start) { | |
6394328a | 1360 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1361 | PAGE_SIZE - off_start); |
6394328a | 1362 | if (ret) |
6f8d4455 | 1363 | return ret; |
6394328a | 1364 | |
75cd4e09 | 1365 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1366 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1367 | } |
1368 | ||
6e961949 | 1369 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1370 | struct dnode_of_data dn; |
6e961949 CY |
1371 | unsigned int end_offset; |
1372 | pgoff_t end; | |
75cd4e09 | 1373 | |
c7079853 | 1374 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 1375 | down_write(&F2FS_I(inode)->i_mmap_sem); |
c7079853 CY |
1376 | |
1377 | truncate_pagecache_range(inode, | |
1378 | (loff_t)index << PAGE_SHIFT, | |
1379 | ((loff_t)pg_end << PAGE_SHIFT) - 1); | |
1380 | ||
75cd4e09 CY |
1381 | f2fs_lock_op(sbi); |
1382 | ||
6e961949 | 1383 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1384 | ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE); |
75cd4e09 CY |
1385 | if (ret) { |
1386 | f2fs_unlock_op(sbi); | |
6f8d4455 | 1387 | up_write(&F2FS_I(inode)->i_mmap_sem); |
c7079853 | 1388 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
75cd4e09 CY |
1389 | goto out; |
1390 | } | |
1391 | ||
6e961949 CY |
1392 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1393 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1394 | ||
1395 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 | 1396 | f2fs_put_dnode(&dn); |
c7079853 | 1397 | |
75cd4e09 | 1398 | f2fs_unlock_op(sbi); |
6f8d4455 | 1399 | up_write(&F2FS_I(inode)->i_mmap_sem); |
c7079853 | 1400 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
9434fcde CY |
1401 | |
1402 | f2fs_balance_fs(sbi, dn.node_changed); | |
1403 | ||
6e961949 CY |
1404 | if (ret) |
1405 | goto out; | |
75cd4e09 | 1406 | |
6e961949 | 1407 | index = end; |
75cd4e09 | 1408 | new_size = max_t(loff_t, new_size, |
6e961949 | 1409 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1410 | } |
1411 | ||
1412 | if (off_end) { | |
6394328a CY |
1413 | ret = fill_zero(inode, pg_end, 0, off_end); |
1414 | if (ret) | |
1415 | goto out; | |
1416 | ||
75cd4e09 CY |
1417 | new_size = max_t(loff_t, new_size, offset + len); |
1418 | } | |
1419 | } | |
1420 | ||
1421 | out: | |
17cd07ae CY |
1422 | if (new_size > i_size_read(inode)) { |
1423 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1424 | file_set_keep_isize(inode); | |
1425 | else | |
1426 | f2fs_i_size_write(inode, new_size); | |
1427 | } | |
75cd4e09 CY |
1428 | return ret; |
1429 | } | |
1430 | ||
f62185d0 CY |
1431 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1432 | { | |
1433 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1434 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1435 | loff_t new_size; |
6e2c64ad | 1436 | int ret = 0; |
f62185d0 | 1437 | |
f62185d0 | 1438 | new_size = i_size_read(inode) + len; |
46e82fb1 KM |
1439 | ret = inode_newsize_ok(inode, new_size); |
1440 | if (ret) | |
1441 | return ret; | |
f62185d0 CY |
1442 | |
1443 | if (offset >= i_size_read(inode)) | |
1444 | return -EINVAL; | |
1445 | ||
1446 | /* insert range should be aligned to block size of f2fs. */ | |
1447 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1448 | return -EINVAL; | |
1449 | ||
b9d777b8 JK |
1450 | ret = f2fs_convert_inline_inode(inode); |
1451 | if (ret) | |
1452 | return ret; | |
97a7b2c2 | 1453 | |
2c4db1a6 | 1454 | f2fs_balance_fs(sbi, true); |
2a340760 | 1455 | |
5a3a2d83 | 1456 | down_write(&F2FS_I(inode)->i_mmap_sem); |
c42d28ce | 1457 | ret = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
6f8d4455 | 1458 | up_write(&F2FS_I(inode)->i_mmap_sem); |
f62185d0 | 1459 | if (ret) |
6f8d4455 | 1460 | return ret; |
f62185d0 CY |
1461 | |
1462 | /* write out all dirty pages from offset */ | |
1463 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1464 | if (ret) | |
6f8d4455 | 1465 | return ret; |
f62185d0 | 1466 | |
09cbfeaf KS |
1467 | pg_start = offset >> PAGE_SHIFT; |
1468 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1469 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1470 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1471 | ||
6f8d4455 JK |
1472 | /* avoid gc operation during block exchange */ |
1473 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
1474 | down_write(&F2FS_I(inode)->i_mmap_sem); | |
1475 | truncate_pagecache(inode, offset); | |
1476 | ||
0a2aa8fb JK |
1477 | while (!ret && idx > pg_start) { |
1478 | nr = idx - pg_start; | |
1479 | if (nr > delta) | |
1480 | nr = delta; | |
1481 | idx -= nr; | |
f62185d0 | 1482 | |
f62185d0 | 1483 | f2fs_lock_op(sbi); |
5f281fab JK |
1484 | f2fs_drop_extent_tree(inode); |
1485 | ||
0a2aa8fb JK |
1486 | ret = __exchange_data_block(inode, inode, idx, |
1487 | idx + delta, nr, false); | |
f62185d0 CY |
1488 | f2fs_unlock_op(sbi); |
1489 | } | |
6f8d4455 JK |
1490 | up_write(&F2FS_I(inode)->i_mmap_sem); |
1491 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
f62185d0 | 1492 | |
6e2c64ad | 1493 | /* write out all moved pages, if possible */ |
6f8d4455 | 1494 | down_write(&F2FS_I(inode)->i_mmap_sem); |
6e2c64ad JK |
1495 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
1496 | truncate_pagecache(inode, offset); | |
6f8d4455 | 1497 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6e2c64ad JK |
1498 | |
1499 | if (!ret) | |
fc9581c8 | 1500 | f2fs_i_size_write(inode, new_size); |
f62185d0 CY |
1501 | return ret; |
1502 | } | |
1503 | ||
fbfa2cc5 JK |
1504 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1505 | loff_t len, int mode) | |
1506 | { | |
4081363f | 1507 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
d5097be5 | 1508 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL, |
f9d6d059 CY |
1509 | .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE, |
1510 | .m_may_create = true }; | |
e12dd7bd | 1511 | pgoff_t pg_end; |
fbfa2cc5 | 1512 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1513 | loff_t off_end; |
a7de6086 | 1514 | int err; |
fbfa2cc5 | 1515 | |
a7de6086 JK |
1516 | err = inode_newsize_ok(inode, (len + offset)); |
1517 | if (err) | |
1518 | return err; | |
fbfa2cc5 | 1519 | |
a7de6086 JK |
1520 | err = f2fs_convert_inline_inode(inode); |
1521 | if (err) | |
1522 | return err; | |
9e09fc85 | 1523 | |
2c4db1a6 | 1524 | f2fs_balance_fs(sbi, true); |
2a340760 | 1525 | |
e12dd7bd | 1526 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1527 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1528 | |
e12dd7bd JK |
1529 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1530 | map.m_len = pg_end - map.m_lblk; | |
1531 | if (off_end) | |
1532 | map.m_len++; | |
ead43275 | 1533 | |
a7de6086 JK |
1534 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1535 | if (err) { | |
e12dd7bd | 1536 | pgoff_t last_off; |
fbfa2cc5 | 1537 | |
e12dd7bd | 1538 | if (!map.m_len) |
a7de6086 | 1539 | return err; |
98397ff3 | 1540 | |
e12dd7bd JK |
1541 | last_off = map.m_lblk + map.m_len - 1; |
1542 | ||
1543 | /* update new size to the failed position */ | |
1061fd48 | 1544 | new_size = (last_off == pg_end) ? offset + len : |
e12dd7bd JK |
1545 | (loff_t)(last_off + 1) << PAGE_SHIFT; |
1546 | } else { | |
1547 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1548 | } |
1549 | ||
e8ed90a6 CY |
1550 | if (new_size > i_size_read(inode)) { |
1551 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1552 | file_set_keep_isize(inode); | |
1553 | else | |
1554 | f2fs_i_size_write(inode, new_size); | |
1555 | } | |
fbfa2cc5 | 1556 | |
a7de6086 | 1557 | return err; |
fbfa2cc5 JK |
1558 | } |
1559 | ||
1560 | static long f2fs_fallocate(struct file *file, int mode, | |
1561 | loff_t offset, loff_t len) | |
1562 | { | |
6131ffaa | 1563 | struct inode *inode = file_inode(file); |
587c0a42 | 1564 | long ret = 0; |
fbfa2cc5 | 1565 | |
1f227a3e JK |
1566 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
1567 | return -EIO; | |
1568 | ||
c998012b CY |
1569 | /* f2fs only support ->fallocate for regular file */ |
1570 | if (!S_ISREG(inode->i_mode)) | |
1571 | return -EINVAL; | |
1572 | ||
62230e0d | 1573 | if (IS_ENCRYPTED(inode) && |
f62185d0 | 1574 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) |
fcc85a4d JK |
1575 | return -EOPNOTSUPP; |
1576 | ||
b4ace337 | 1577 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1578 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1579 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1580 | return -EOPNOTSUPP; |
1581 | ||
5955102c | 1582 | inode_lock(inode); |
3375f696 | 1583 | |
587c0a42 TY |
1584 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1585 | if (offset >= inode->i_size) | |
1586 | goto out; | |
1587 | ||
a66c7b2f | 1588 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1589 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1590 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1591 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1592 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1593 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1594 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1595 | } else { |
fbfa2cc5 | 1596 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1597 | } |
fbfa2cc5 | 1598 | |
3af60a49 | 1599 | if (!ret) { |
078cd827 | 1600 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1601 | f2fs_mark_inode_dirty_sync(inode, false); |
d0239e1b | 1602 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1603 | } |
3375f696 | 1604 | |
587c0a42 | 1605 | out: |
5955102c | 1606 | inode_unlock(inode); |
3375f696 | 1607 | |
c01e2853 | 1608 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1609 | return ret; |
1610 | } | |
1611 | ||
1e84371f JK |
1612 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1613 | { | |
de5307e4 JK |
1614 | /* |
1615 | * f2fs_relase_file is called at every close calls. So we should | |
1616 | * not drop any inmemory pages by close called by other process. | |
1617 | */ | |
1618 | if (!(filp->f_mode & FMODE_WRITE) || | |
1619 | atomic_read(&inode->i_writecount) != 1) | |
1620 | return 0; | |
1621 | ||
1e84371f JK |
1622 | /* some remained atomic pages should discarded */ |
1623 | if (f2fs_is_atomic_file(inode)) | |
4d57b86d | 1624 | f2fs_drop_inmem_pages(inode); |
1e84371f | 1625 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1626 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1627 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1628 | clear_inode_flag(inode, FI_DROP_CACHE); |
dfa74280 CY |
1629 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1630 | stat_dec_volatile_write(inode); | |
1e84371f JK |
1631 | } |
1632 | return 0; | |
1633 | } | |
1634 | ||
7a10f017 | 1635 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
fbfa2cc5 | 1636 | { |
7a10f017 JK |
1637 | struct inode *inode = file_inode(file); |
1638 | ||
1639 | /* | |
1640 | * If the process doing a transaction is crashed, we should do | |
1641 | * roll-back. Otherwise, other reader/write can see corrupted database | |
1642 | * until all the writers close its file. Since this should be done | |
1643 | * before dropping file lock, it needs to do in ->flush. | |
1644 | */ | |
1645 | if (f2fs_is_atomic_file(inode) && | |
1646 | F2FS_I(inode)->inmem_task == current) | |
4d57b86d | 1647 | f2fs_drop_inmem_pages(inode); |
7a10f017 | 1648 | return 0; |
fbfa2cc5 JK |
1649 | } |
1650 | ||
52656e6c | 1651 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1652 | { |
6131ffaa | 1653 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1654 | struct f2fs_inode_info *fi = F2FS_I(inode); |
76481158 CY |
1655 | unsigned int flags = fi->i_flags; |
1656 | ||
62230e0d | 1657 | if (IS_ENCRYPTED(inode)) |
76481158 CY |
1658 | flags |= F2FS_ENCRYPT_FL; |
1659 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) | |
1660 | flags |= F2FS_INLINE_DATA_FL; | |
5d539245 JK |
1661 | if (is_inode_flag_set(inode, FI_PIN_FILE)) |
1662 | flags |= F2FS_NOCOW_FL; | |
76481158 CY |
1663 | |
1664 | flags &= F2FS_FL_USER_VISIBLE; | |
1665 | ||
52656e6c JK |
1666 | return put_user(flags, (int __user *)arg); |
1667 | } | |
fbfa2cc5 | 1668 | |
2c1d0305 CY |
1669 | static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags) |
1670 | { | |
1671 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1672 | unsigned int oldflags; | |
1673 | ||
1674 | /* Is it quota file? Do not allow user to mess with it */ | |
1675 | if (IS_NOQUOTA(inode)) | |
1676 | return -EPERM; | |
1677 | ||
1678 | flags = f2fs_mask_flags(inode->i_mode, flags); | |
1679 | ||
1680 | oldflags = fi->i_flags; | |
1681 | ||
59c84408 | 1682 | if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) |
2c1d0305 CY |
1683 | if (!capable(CAP_LINUX_IMMUTABLE)) |
1684 | return -EPERM; | |
1685 | ||
c807a7cb CY |
1686 | flags = flags & F2FS_FL_USER_MODIFIABLE; |
1687 | flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE; | |
2c1d0305 CY |
1688 | fi->i_flags = flags; |
1689 | ||
59c84408 | 1690 | if (fi->i_flags & F2FS_PROJINHERIT_FL) |
2c1d0305 CY |
1691 | set_inode_flag(inode, FI_PROJ_INHERIT); |
1692 | else | |
1693 | clear_inode_flag(inode, FI_PROJ_INHERIT); | |
1694 | ||
1695 | inode->i_ctime = current_time(inode); | |
1696 | f2fs_set_inode_flags(inode); | |
b32e0190 | 1697 | f2fs_mark_inode_dirty_sync(inode, true); |
2c1d0305 CY |
1698 | return 0; |
1699 | } | |
1700 | ||
52656e6c JK |
1701 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1702 | { | |
1703 | struct inode *inode = file_inode(filp); | |
69494229 | 1704 | unsigned int flags; |
52656e6c | 1705 | int ret; |
fbfa2cc5 | 1706 | |
7fb17fe4 CY |
1707 | if (!inode_owner_or_capable(inode)) |
1708 | return -EACCES; | |
1709 | ||
1710 | if (get_user(flags, (int __user *)arg)) | |
1711 | return -EFAULT; | |
1712 | ||
52656e6c JK |
1713 | ret = mnt_want_write_file(filp); |
1714 | if (ret) | |
1715 | return ret; | |
fbfa2cc5 | 1716 | |
5955102c | 1717 | inode_lock(inode); |
fbfa2cc5 | 1718 | |
2c1d0305 | 1719 | ret = __f2fs_ioc_setflags(inode, flags); |
fbfa2cc5 | 1720 | |
a72d4b97 | 1721 | inode_unlock(inode); |
52656e6c JK |
1722 | mnt_drop_write_file(filp); |
1723 | return ret; | |
1724 | } | |
4b2fecc8 | 1725 | |
d49f3e89 CY |
1726 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1727 | { | |
1728 | struct inode *inode = file_inode(filp); | |
1729 | ||
1730 | return put_user(inode->i_generation, (int __user *)arg); | |
1731 | } | |
1732 | ||
88b88a66 JK |
1733 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1734 | { | |
1735 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1736 | int ret; |
88b88a66 JK |
1737 | |
1738 | if (!inode_owner_or_capable(inode)) | |
1739 | return -EACCES; | |
1740 | ||
e811898c JK |
1741 | if (!S_ISREG(inode->i_mode)) |
1742 | return -EINVAL; | |
1743 | ||
7fb17fe4 CY |
1744 | ret = mnt_want_write_file(filp); |
1745 | if (ret) | |
1746 | return ret; | |
1747 | ||
0fac558b CY |
1748 | inode_lock(inode); |
1749 | ||
455e3a58 JK |
1750 | if (f2fs_is_atomic_file(inode)) { |
1751 | if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) | |
1752 | ret = -EINVAL; | |
7fb17fe4 | 1753 | goto out; |
455e3a58 | 1754 | } |
88b88a66 | 1755 | |
f4c9c743 CY |
1756 | ret = f2fs_convert_inline_inode(inode); |
1757 | if (ret) | |
7fb17fe4 | 1758 | goto out; |
88b88a66 | 1759 | |
6f8d4455 JK |
1760 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
1761 | ||
31867b23 JK |
1762 | /* |
1763 | * Should wait end_io to count F2FS_WB_CP_DATA correctly by | |
1764 | * f2fs_is_atomic_file. | |
1765 | */ | |
1766 | if (get_dirty_pages(inode)) | |
1767 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1768 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1769 | inode->i_ino, get_dirty_pages(inode)); |
1770 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
6f8d4455 JK |
1771 | if (ret) { |
1772 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
684ca7e5 | 1773 | goto out; |
6f8d4455 | 1774 | } |
31867b23 | 1775 | |
054afda9 | 1776 | set_inode_flag(inode, FI_ATOMIC_FILE); |
2ef79ecb | 1777 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
6f8d4455 | 1778 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
684ca7e5 | 1779 | |
6f8d4455 | 1780 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7a10f017 | 1781 | F2FS_I(inode)->inmem_task = current; |
26a28a0c JK |
1782 | stat_inc_atomic_write(inode); |
1783 | stat_update_max_atomic_write(inode); | |
684ca7e5 | 1784 | out: |
0fac558b | 1785 | inode_unlock(inode); |
7fb17fe4 | 1786 | mnt_drop_write_file(filp); |
c27753d6 | 1787 | return ret; |
88b88a66 JK |
1788 | } |
1789 | ||
1790 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1791 | { | |
1792 | struct inode *inode = file_inode(filp); | |
1793 | int ret; | |
1794 | ||
1795 | if (!inode_owner_or_capable(inode)) | |
1796 | return -EACCES; | |
1797 | ||
1798 | ret = mnt_want_write_file(filp); | |
1799 | if (ret) | |
1800 | return ret; | |
1801 | ||
6f8d4455 | 1802 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
0fac558b | 1803 | |
6f8d4455 | 1804 | inode_lock(inode); |
1dc0f899 | 1805 | |
b169c3c5 CY |
1806 | if (f2fs_is_volatile_file(inode)) { |
1807 | ret = -EINVAL; | |
7fb17fe4 | 1808 | goto err_out; |
b169c3c5 | 1809 | } |
7fb17fe4 | 1810 | |
6282adbf | 1811 | if (f2fs_is_atomic_file(inode)) { |
4d57b86d | 1812 | ret = f2fs_commit_inmem_pages(inode); |
5fe45743 | 1813 | if (ret) |
edb27dee | 1814 | goto err_out; |
5fe45743 | 1815 | |
26a28a0c | 1816 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1817 | if (!ret) { |
1818 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
2ef79ecb | 1819 | F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0; |
5fe45743 | 1820 | stat_dec_atomic_write(inode); |
447135a8 | 1821 | } |
26a28a0c | 1822 | } else { |
774e1b78 | 1823 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
6282adbf | 1824 | } |
edb27dee | 1825 | err_out: |
2ef79ecb CY |
1826 | if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { |
1827 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); | |
1828 | ret = -EINVAL; | |
1829 | } | |
0fac558b | 1830 | inode_unlock(inode); |
88b88a66 JK |
1831 | mnt_drop_write_file(filp); |
1832 | return ret; | |
1833 | } | |
1834 | ||
02a1335f JK |
1835 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1836 | { | |
1837 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1838 | int ret; |
02a1335f JK |
1839 | |
1840 | if (!inode_owner_or_capable(inode)) | |
1841 | return -EACCES; | |
1842 | ||
8ff0971f CY |
1843 | if (!S_ISREG(inode->i_mode)) |
1844 | return -EINVAL; | |
1845 | ||
7fb17fe4 CY |
1846 | ret = mnt_want_write_file(filp); |
1847 | if (ret) | |
1848 | return ret; | |
1849 | ||
0fac558b CY |
1850 | inode_lock(inode); |
1851 | ||
1e84371f | 1852 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1853 | goto out; |
1e84371f | 1854 | |
f4c9c743 CY |
1855 | ret = f2fs_convert_inline_inode(inode); |
1856 | if (ret) | |
7fb17fe4 | 1857 | goto out; |
b3d208f9 | 1858 | |
648d50ba CY |
1859 | stat_inc_volatile_write(inode); |
1860 | stat_update_max_volatile_write(inode); | |
1861 | ||
91942321 | 1862 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1863 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1864 | out: |
0fac558b | 1865 | inode_unlock(inode); |
7fb17fe4 CY |
1866 | mnt_drop_write_file(filp); |
1867 | return ret; | |
02a1335f JK |
1868 | } |
1869 | ||
1e84371f JK |
1870 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1871 | { | |
1872 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1873 | int ret; |
1e84371f JK |
1874 | |
1875 | if (!inode_owner_or_capable(inode)) | |
1876 | return -EACCES; | |
1877 | ||
7fb17fe4 CY |
1878 | ret = mnt_want_write_file(filp); |
1879 | if (ret) | |
1880 | return ret; | |
1881 | ||
0fac558b CY |
1882 | inode_lock(inode); |
1883 | ||
1e84371f | 1884 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1885 | goto out; |
1e84371f | 1886 | |
7fb17fe4 CY |
1887 | if (!f2fs_is_first_block_written(inode)) { |
1888 | ret = truncate_partial_data_page(inode, 0, true); | |
1889 | goto out; | |
1890 | } | |
3c6c2beb | 1891 | |
7fb17fe4 CY |
1892 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1893 | out: | |
0fac558b | 1894 | inode_unlock(inode); |
7fb17fe4 CY |
1895 | mnt_drop_write_file(filp); |
1896 | return ret; | |
1e84371f JK |
1897 | } |
1898 | ||
1899 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1900 | { | |
1901 | struct inode *inode = file_inode(filp); | |
1902 | int ret; | |
1903 | ||
1904 | if (!inode_owner_or_capable(inode)) | |
1905 | return -EACCES; | |
1906 | ||
1907 | ret = mnt_want_write_file(filp); | |
1908 | if (ret) | |
1909 | return ret; | |
1910 | ||
0fac558b CY |
1911 | inode_lock(inode); |
1912 | ||
26dc3d44 | 1913 | if (f2fs_is_atomic_file(inode)) |
4d57b86d | 1914 | f2fs_drop_inmem_pages(inode); |
732d5648 | 1915 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1916 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1917 | stat_dec_volatile_write(inode); |
608514de | 1918 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1919 | } |
de6a8ec9 | 1920 | |
455e3a58 JK |
1921 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
1922 | ||
0fac558b CY |
1923 | inode_unlock(inode); |
1924 | ||
1e84371f | 1925 | mnt_drop_write_file(filp); |
d0239e1b | 1926 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1927 | return ret; |
1928 | } | |
1929 | ||
1abff93d JK |
1930 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1931 | { | |
1932 | struct inode *inode = file_inode(filp); | |
1933 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1934 | struct super_block *sb = sbi->sb; | |
1935 | __u32 in; | |
2a96d8ad | 1936 | int ret = 0; |
1abff93d JK |
1937 | |
1938 | if (!capable(CAP_SYS_ADMIN)) | |
1939 | return -EPERM; | |
1940 | ||
1941 | if (get_user(in, (__u32 __user *)arg)) | |
1942 | return -EFAULT; | |
1943 | ||
60b2b4ee ST |
1944 | if (in != F2FS_GOING_DOWN_FULLSYNC) { |
1945 | ret = mnt_want_write_file(filp); | |
1946 | if (ret) | |
1947 | return ret; | |
1948 | } | |
7fb17fe4 | 1949 | |
1abff93d JK |
1950 | switch (in) { |
1951 | case F2FS_GOING_DOWN_FULLSYNC: | |
1952 | sb = freeze_bdev(sb->s_bdev); | |
d027c484 CY |
1953 | if (IS_ERR(sb)) { |
1954 | ret = PTR_ERR(sb); | |
1955 | goto out; | |
1956 | } | |
1957 | if (sb) { | |
38f91ca8 | 1958 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1959 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d JK |
1960 | thaw_bdev(sb->s_bdev, sb); |
1961 | } | |
1962 | break; | |
1963 | case F2FS_GOING_DOWN_METASYNC: | |
1964 | /* do checkpoint only */ | |
d027c484 CY |
1965 | ret = f2fs_sync_fs(sb, 1); |
1966 | if (ret) | |
1967 | goto out; | |
38f91ca8 | 1968 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1969 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d JK |
1970 | break; |
1971 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1972 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1973 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d | 1974 | break; |
c912a829 | 1975 | case F2FS_GOING_DOWN_METAFLUSH: |
4d57b86d | 1976 | f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); |
38f91ca8 | 1977 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1978 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
c912a829 | 1979 | break; |
0cd6d9b0 JK |
1980 | case F2FS_GOING_DOWN_NEED_FSCK: |
1981 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
db610a64 JK |
1982 | set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK); |
1983 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
0cd6d9b0 JK |
1984 | /* do checkpoint only */ |
1985 | ret = f2fs_sync_fs(sb, 1); | |
db610a64 | 1986 | goto out; |
1abff93d | 1987 | default: |
7fb17fe4 CY |
1988 | ret = -EINVAL; |
1989 | goto out; | |
1abff93d | 1990 | } |
7950e9ac | 1991 | |
4d57b86d CY |
1992 | f2fs_stop_gc_thread(sbi); |
1993 | f2fs_stop_discard_thread(sbi); | |
7950e9ac | 1994 | |
4d57b86d | 1995 | f2fs_drop_discard_cmd(sbi); |
7950e9ac CY |
1996 | clear_opt(sbi, DISCARD); |
1997 | ||
d0239e1b | 1998 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 | 1999 | out: |
60b2b4ee ST |
2000 | if (in != F2FS_GOING_DOWN_FULLSYNC) |
2001 | mnt_drop_write_file(filp); | |
559e87c4 CY |
2002 | |
2003 | trace_f2fs_shutdown(sbi, in, ret); | |
2004 | ||
7fb17fe4 | 2005 | return ret; |
1abff93d JK |
2006 | } |
2007 | ||
52656e6c JK |
2008 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
2009 | { | |
2010 | struct inode *inode = file_inode(filp); | |
2011 | struct super_block *sb = inode->i_sb; | |
2012 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
2013 | struct fstrim_range range; | |
2014 | int ret; | |
4b2fecc8 | 2015 | |
52656e6c JK |
2016 | if (!capable(CAP_SYS_ADMIN)) |
2017 | return -EPERM; | |
4b2fecc8 | 2018 | |
7d20c8ab | 2019 | if (!f2fs_hw_support_discard(F2FS_SB(sb))) |
52656e6c | 2020 | return -EOPNOTSUPP; |
4b2fecc8 | 2021 | |
52656e6c JK |
2022 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
2023 | sizeof(range))) | |
2024 | return -EFAULT; | |
4b2fecc8 | 2025 | |
7fb17fe4 CY |
2026 | ret = mnt_want_write_file(filp); |
2027 | if (ret) | |
2028 | return ret; | |
2029 | ||
52656e6c JK |
2030 | range.minlen = max((unsigned int)range.minlen, |
2031 | q->limits.discard_granularity); | |
2032 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 2033 | mnt_drop_write_file(filp); |
52656e6c JK |
2034 | if (ret < 0) |
2035 | return ret; | |
4b2fecc8 | 2036 | |
52656e6c JK |
2037 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
2038 | sizeof(range))) | |
2039 | return -EFAULT; | |
d0239e1b | 2040 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
2041 | return 0; |
2042 | } | |
2043 | ||
f424f664 JK |
2044 | static bool uuid_is_nonzero(__u8 u[16]) |
2045 | { | |
2046 | int i; | |
2047 | ||
2048 | for (i = 0; i < 16; i++) | |
2049 | if (u[i]) | |
2050 | return true; | |
2051 | return false; | |
2052 | } | |
2053 | ||
2054 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
2055 | { | |
f424f664 JK |
2056 | struct inode *inode = file_inode(filp); |
2057 | ||
7beb01f7 | 2058 | if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode))) |
ead710b7 CY |
2059 | return -EOPNOTSUPP; |
2060 | ||
d0239e1b | 2061 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 2062 | |
db717d8e | 2063 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
2064 | } |
2065 | ||
2066 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
2067 | { | |
7beb01f7 | 2068 | if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp)))) |
ead710b7 | 2069 | return -EOPNOTSUPP; |
db717d8e | 2070 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
2071 | } |
2072 | ||
2073 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
2074 | { | |
2075 | struct inode *inode = file_inode(filp); | |
2076 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2077 | int err; | |
2078 | ||
7beb01f7 | 2079 | if (!f2fs_sb_has_encrypt(sbi)) |
f424f664 JK |
2080 | return -EOPNOTSUPP; |
2081 | ||
f424f664 JK |
2082 | err = mnt_want_write_file(filp); |
2083 | if (err) | |
2084 | return err; | |
2085 | ||
846ae671 | 2086 | down_write(&sbi->sb_lock); |
d0d3f1b3 CY |
2087 | |
2088 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
2089 | goto got_it; | |
2090 | ||
f424f664 JK |
2091 | /* update superblock with uuid */ |
2092 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
2093 | ||
c5bda1c8 | 2094 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
2095 | if (err) { |
2096 | /* undo new data */ | |
2097 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
d0d3f1b3 | 2098 | goto out_err; |
f424f664 JK |
2099 | } |
2100 | got_it: | |
2101 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
2102 | 16)) | |
d0d3f1b3 CY |
2103 | err = -EFAULT; |
2104 | out_err: | |
846ae671 | 2105 | up_write(&sbi->sb_lock); |
d0d3f1b3 CY |
2106 | mnt_drop_write_file(filp); |
2107 | return err; | |
f424f664 JK |
2108 | } |
2109 | ||
c1c1b583 CY |
2110 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
2111 | { | |
2112 | struct inode *inode = file_inode(filp); | |
2113 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 2114 | __u32 sync; |
7fb17fe4 | 2115 | int ret; |
c1c1b583 CY |
2116 | |
2117 | if (!capable(CAP_SYS_ADMIN)) | |
2118 | return -EPERM; | |
2119 | ||
d530d4d8 | 2120 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
2121 | return -EFAULT; |
2122 | ||
d530d4d8 CY |
2123 | if (f2fs_readonly(sbi->sb)) |
2124 | return -EROFS; | |
c1c1b583 | 2125 | |
7fb17fe4 CY |
2126 | ret = mnt_want_write_file(filp); |
2127 | if (ret) | |
2128 | return ret; | |
2129 | ||
d530d4d8 | 2130 | if (!sync) { |
7fb17fe4 CY |
2131 | if (!mutex_trylock(&sbi->gc_mutex)) { |
2132 | ret = -EBUSY; | |
2133 | goto out; | |
2134 | } | |
d530d4d8 CY |
2135 | } else { |
2136 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
2137 | } |
2138 | ||
e066b83c | 2139 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
7fb17fe4 CY |
2140 | out: |
2141 | mnt_drop_write_file(filp); | |
2142 | return ret; | |
c1c1b583 CY |
2143 | } |
2144 | ||
34dc77ad JK |
2145 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
2146 | { | |
2147 | struct inode *inode = file_inode(filp); | |
2148 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2149 | struct f2fs_gc_range range; | |
2150 | u64 end; | |
2151 | int ret; | |
2152 | ||
2153 | if (!capable(CAP_SYS_ADMIN)) | |
2154 | return -EPERM; | |
2155 | ||
2156 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, | |
2157 | sizeof(range))) | |
2158 | return -EFAULT; | |
2159 | ||
2160 | if (f2fs_readonly(sbi->sb)) | |
2161 | return -EROFS; | |
2162 | ||
b82f6e34 YH |
2163 | end = range.start + range.len; |
2164 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) { | |
2165 | return -EINVAL; | |
2166 | } | |
2167 | ||
34dc77ad JK |
2168 | ret = mnt_want_write_file(filp); |
2169 | if (ret) | |
2170 | return ret; | |
2171 | ||
34dc77ad JK |
2172 | do_more: |
2173 | if (!range.sync) { | |
2174 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2175 | ret = -EBUSY; | |
2176 | goto out; | |
2177 | } | |
2178 | } else { | |
2179 | mutex_lock(&sbi->gc_mutex); | |
2180 | } | |
2181 | ||
2182 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); | |
67b0e42b | 2183 | range.start += BLKS_PER_SEC(sbi); |
34dc77ad JK |
2184 | if (range.start <= end) |
2185 | goto do_more; | |
2186 | out: | |
2187 | mnt_drop_write_file(filp); | |
2188 | return ret; | |
2189 | } | |
2190 | ||
059c0648 | 2191 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
456b88e4 CY |
2192 | { |
2193 | struct inode *inode = file_inode(filp); | |
2194 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 2195 | int ret; |
456b88e4 CY |
2196 | |
2197 | if (!capable(CAP_SYS_ADMIN)) | |
2198 | return -EPERM; | |
2199 | ||
2200 | if (f2fs_readonly(sbi->sb)) | |
2201 | return -EROFS; | |
2202 | ||
4354994f DR |
2203 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { |
2204 | f2fs_msg(sbi->sb, KERN_INFO, | |
2205 | "Skipping Checkpoint. Checkpoints currently disabled."); | |
2206 | return -EINVAL; | |
2207 | } | |
2208 | ||
7fb17fe4 CY |
2209 | ret = mnt_want_write_file(filp); |
2210 | if (ret) | |
2211 | return ret; | |
2212 | ||
2213 | ret = f2fs_sync_fs(sbi->sb, 1); | |
2214 | ||
2215 | mnt_drop_write_file(filp); | |
2216 | return ret; | |
456b88e4 CY |
2217 | } |
2218 | ||
d323d005 CY |
2219 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
2220 | struct file *filp, | |
2221 | struct f2fs_defragment *range) | |
2222 | { | |
2223 | struct inode *inode = file_inode(filp); | |
f3d98e74 | 2224 | struct f2fs_map_blocks map = { .m_next_extent = NULL, |
f4f0b677 JZ |
2225 | .m_seg_type = NO_CHECK_TYPE , |
2226 | .m_may_create = false }; | |
1061fd48 | 2227 | struct extent_info ei = {0, 0, 0}; |
f3d98e74 | 2228 | pgoff_t pg_start, pg_end, next_pgofs; |
3519e3f9 | 2229 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 2230 | unsigned int total = 0, sec_num; |
d323d005 CY |
2231 | block_t blk_end = 0; |
2232 | bool fragmented = false; | |
2233 | int err; | |
2234 | ||
2235 | /* if in-place-update policy is enabled, don't waste time here */ | |
4d57b86d | 2236 | if (f2fs_should_update_inplace(inode, NULL)) |
d323d005 CY |
2237 | return -EINVAL; |
2238 | ||
09cbfeaf KS |
2239 | pg_start = range->start >> PAGE_SHIFT; |
2240 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 2241 | |
2c4db1a6 | 2242 | f2fs_balance_fs(sbi, true); |
d323d005 | 2243 | |
5955102c | 2244 | inode_lock(inode); |
d323d005 CY |
2245 | |
2246 | /* writeback all dirty pages in the range */ | |
2247 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 2248 | range->start + range->len - 1); |
d323d005 CY |
2249 | if (err) |
2250 | goto out; | |
2251 | ||
2252 | /* | |
2253 | * lookup mapping info in extent cache, skip defragmenting if physical | |
2254 | * block addresses are continuous. | |
2255 | */ | |
2256 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
2257 | if (ei.fofs + ei.len >= pg_end) | |
2258 | goto out; | |
2259 | } | |
2260 | ||
2261 | map.m_lblk = pg_start; | |
f3d98e74 | 2262 | map.m_next_pgofs = &next_pgofs; |
d323d005 CY |
2263 | |
2264 | /* | |
2265 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
2266 | * physical block addresses are continuous even if there are hole(s) | |
2267 | * in logical blocks. | |
2268 | */ | |
2269 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 2270 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2271 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2272 | if (err) |
2273 | goto out; | |
2274 | ||
2275 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2276 | map.m_lblk = next_pgofs; |
d323d005 CY |
2277 | continue; |
2278 | } | |
2279 | ||
25a912e5 | 2280 | if (blk_end && blk_end != map.m_pblk) |
d323d005 | 2281 | fragmented = true; |
25a912e5 CY |
2282 | |
2283 | /* record total count of block that we're going to move */ | |
2284 | total += map.m_len; | |
2285 | ||
d323d005 CY |
2286 | blk_end = map.m_pblk + map.m_len; |
2287 | ||
2288 | map.m_lblk += map.m_len; | |
d323d005 CY |
2289 | } |
2290 | ||
2291 | if (!fragmented) | |
2292 | goto out; | |
2293 | ||
25a912e5 | 2294 | sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
d323d005 CY |
2295 | |
2296 | /* | |
2297 | * make sure there are enough free section for LFS allocation, this can | |
2298 | * avoid defragment running in SSR mode when free section are allocated | |
2299 | * intensively | |
2300 | */ | |
7f3037a5 | 2301 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
2302 | err = -EAGAIN; |
2303 | goto out; | |
2304 | } | |
2305 | ||
25a912e5 CY |
2306 | map.m_lblk = pg_start; |
2307 | map.m_len = pg_end - pg_start; | |
2308 | total = 0; | |
2309 | ||
d323d005 CY |
2310 | while (map.m_lblk < pg_end) { |
2311 | pgoff_t idx; | |
2312 | int cnt = 0; | |
2313 | ||
2314 | do_map: | |
a1c1e9b7 | 2315 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2316 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2317 | if (err) |
2318 | goto clear_out; | |
2319 | ||
2320 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2321 | map.m_lblk = next_pgofs; |
d323d005 CY |
2322 | continue; |
2323 | } | |
2324 | ||
91942321 | 2325 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2326 | |
2327 | idx = map.m_lblk; | |
2328 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2329 | struct page *page; | |
2330 | ||
4d57b86d | 2331 | page = f2fs_get_lock_data_page(inode, idx, true); |
d323d005 CY |
2332 | if (IS_ERR(page)) { |
2333 | err = PTR_ERR(page); | |
2334 | goto clear_out; | |
2335 | } | |
2336 | ||
2337 | set_page_dirty(page); | |
2338 | f2fs_put_page(page, 1); | |
2339 | ||
2340 | idx++; | |
2341 | cnt++; | |
2342 | total++; | |
2343 | } | |
2344 | ||
2345 | map.m_lblk = idx; | |
d323d005 CY |
2346 | |
2347 | if (idx < pg_end && cnt < blk_per_seg) | |
2348 | goto do_map; | |
2349 | ||
91942321 | 2350 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2351 | |
2352 | err = filemap_fdatawrite(inode->i_mapping); | |
2353 | if (err) | |
2354 | goto out; | |
2355 | } | |
2356 | clear_out: | |
91942321 | 2357 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2358 | out: |
5955102c | 2359 | inode_unlock(inode); |
d323d005 | 2360 | if (!err) |
09cbfeaf | 2361 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2362 | return err; |
2363 | } | |
2364 | ||
2365 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2366 | { | |
2367 | struct inode *inode = file_inode(filp); | |
2368 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2369 | struct f2fs_defragment range; | |
2370 | int err; | |
2371 | ||
2372 | if (!capable(CAP_SYS_ADMIN)) | |
2373 | return -EPERM; | |
2374 | ||
7eab0c0d | 2375 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
d323d005 CY |
2376 | return -EINVAL; |
2377 | ||
d7563861 KM |
2378 | if (f2fs_readonly(sbi->sb)) |
2379 | return -EROFS; | |
d323d005 CY |
2380 | |
2381 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
d7563861 KM |
2382 | sizeof(range))) |
2383 | return -EFAULT; | |
d323d005 CY |
2384 | |
2385 | /* verify alignment of offset & size */ | |
d7563861 KM |
2386 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2387 | return -EINVAL; | |
d323d005 | 2388 | |
1941d7bc | 2389 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
d7563861 KM |
2390 | sbi->max_file_blocks)) |
2391 | return -EINVAL; | |
2392 | ||
2393 | err = mnt_want_write_file(filp); | |
2394 | if (err) | |
2395 | return err; | |
1941d7bc | 2396 | |
d323d005 | 2397 | err = f2fs_defragment_range(sbi, filp, &range); |
d7563861 KM |
2398 | mnt_drop_write_file(filp); |
2399 | ||
d0239e1b | 2400 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 | 2401 | if (err < 0) |
d7563861 | 2402 | return err; |
d323d005 CY |
2403 | |
2404 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2405 | sizeof(range))) | |
d7563861 KM |
2406 | return -EFAULT; |
2407 | ||
2408 | return 0; | |
d323d005 CY |
2409 | } |
2410 | ||
4dd6f977 JK |
2411 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2412 | struct file *file_out, loff_t pos_out, size_t len) | |
2413 | { | |
2414 | struct inode *src = file_inode(file_in); | |
2415 | struct inode *dst = file_inode(file_out); | |
2416 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2417 | size_t olen = len, dst_max_i_size = 0; | |
2418 | size_t dst_osize; | |
2419 | int ret; | |
2420 | ||
2421 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2422 | src->i_sb != dst->i_sb) | |
2423 | return -EXDEV; | |
2424 | ||
2425 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2426 | return -EROFS; | |
2427 | ||
fe8494bf CY |
2428 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2429 | return -EINVAL; | |
4dd6f977 | 2430 | |
62230e0d | 2431 | if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst)) |
4dd6f977 JK |
2432 | return -EOPNOTSUPP; |
2433 | ||
d95fd91c FL |
2434 | if (src == dst) { |
2435 | if (pos_in == pos_out) | |
2436 | return 0; | |
2437 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2438 | return -EINVAL; | |
2439 | } | |
2440 | ||
4dd6f977 | 2441 | inode_lock(src); |
20a3d61d | 2442 | if (src != dst) { |
bb06664a CY |
2443 | ret = -EBUSY; |
2444 | if (!inode_trylock(dst)) | |
2445 | goto out; | |
20a3d61d | 2446 | } |
4dd6f977 JK |
2447 | |
2448 | ret = -EINVAL; | |
2449 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2450 | goto out_unlock; | |
2451 | if (len == 0) | |
2452 | olen = len = src->i_size - pos_in; | |
2453 | if (pos_in + len == src->i_size) | |
2454 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2455 | if (len == 0) { | |
2456 | ret = 0; | |
2457 | goto out_unlock; | |
2458 | } | |
2459 | ||
2460 | dst_osize = dst->i_size; | |
2461 | if (pos_out + olen > dst->i_size) | |
2462 | dst_max_i_size = pos_out + olen; | |
2463 | ||
2464 | /* verify the end result is block aligned */ | |
2465 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2466 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2467 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2468 | goto out_unlock; | |
2469 | ||
2470 | ret = f2fs_convert_inline_inode(src); | |
2471 | if (ret) | |
2472 | goto out_unlock; | |
2473 | ||
2474 | ret = f2fs_convert_inline_inode(dst); | |
2475 | if (ret) | |
2476 | goto out_unlock; | |
2477 | ||
2478 | /* write out all dirty pages from offset */ | |
2479 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2480 | pos_in, pos_in + len); | |
2481 | if (ret) | |
2482 | goto out_unlock; | |
2483 | ||
2484 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2485 | pos_out, pos_out + len); | |
2486 | if (ret) | |
2487 | goto out_unlock; | |
2488 | ||
2489 | f2fs_balance_fs(sbi, true); | |
6f8d4455 JK |
2490 | |
2491 | down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); | |
2492 | if (src != dst) { | |
2493 | ret = -EBUSY; | |
2494 | if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) | |
2495 | goto out_src; | |
2496 | } | |
2497 | ||
4dd6f977 | 2498 | f2fs_lock_op(sbi); |
61e4da11 FL |
2499 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2500 | pos_out >> F2FS_BLKSIZE_BITS, | |
2501 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2502 | |
2503 | if (!ret) { | |
2504 | if (dst_max_i_size) | |
2505 | f2fs_i_size_write(dst, dst_max_i_size); | |
2506 | else if (dst_osize != dst->i_size) | |
2507 | f2fs_i_size_write(dst, dst_osize); | |
2508 | } | |
2509 | f2fs_unlock_op(sbi); | |
6f8d4455 JK |
2510 | |
2511 | if (src != dst) | |
b2532c69 | 2512 | up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]); |
6f8d4455 JK |
2513 | out_src: |
2514 | up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); | |
2515 | out_unlock: | |
2516 | if (src != dst) | |
4dd6f977 | 2517 | inode_unlock(dst); |
20a3d61d | 2518 | out: |
4dd6f977 JK |
2519 | inode_unlock(src); |
2520 | return ret; | |
2521 | } | |
2522 | ||
2523 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2524 | { | |
2525 | struct f2fs_move_range range; | |
2526 | struct fd dst; | |
2527 | int err; | |
2528 | ||
2529 | if (!(filp->f_mode & FMODE_READ) || | |
2530 | !(filp->f_mode & FMODE_WRITE)) | |
2531 | return -EBADF; | |
2532 | ||
2533 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2534 | sizeof(range))) | |
2535 | return -EFAULT; | |
2536 | ||
2537 | dst = fdget(range.dst_fd); | |
2538 | if (!dst.file) | |
2539 | return -EBADF; | |
2540 | ||
2541 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2542 | err = -EBADF; | |
2543 | goto err_out; | |
2544 | } | |
2545 | ||
2546 | err = mnt_want_write_file(filp); | |
2547 | if (err) | |
2548 | goto err_out; | |
2549 | ||
2550 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2551 | range.pos_out, range.len); | |
2552 | ||
2553 | mnt_drop_write_file(filp); | |
3cecfa5f KM |
2554 | if (err) |
2555 | goto err_out; | |
4dd6f977 JK |
2556 | |
2557 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2558 | &range, sizeof(range))) | |
2559 | err = -EFAULT; | |
2560 | err_out: | |
2561 | fdput(dst); | |
2562 | return err; | |
2563 | } | |
2564 | ||
e066b83c JK |
2565 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2566 | { | |
2567 | struct inode *inode = file_inode(filp); | |
2568 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2569 | struct sit_info *sm = SIT_I(sbi); | |
2570 | unsigned int start_segno = 0, end_segno = 0; | |
2571 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2572 | struct f2fs_flush_device range; | |
2573 | int ret; | |
2574 | ||
2575 | if (!capable(CAP_SYS_ADMIN)) | |
2576 | return -EPERM; | |
2577 | ||
2578 | if (f2fs_readonly(sbi->sb)) | |
2579 | return -EROFS; | |
2580 | ||
4354994f DR |
2581 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
2582 | return -EINVAL; | |
2583 | ||
e066b83c JK |
2584 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, |
2585 | sizeof(range))) | |
2586 | return -EFAULT; | |
2587 | ||
0916878d | 2588 | if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num || |
2c70c5e3 | 2589 | __is_large_section(sbi)) { |
e066b83c | 2590 | f2fs_msg(sbi->sb, KERN_WARNING, |
bda52397 | 2591 | "Can't flush %u in %d for segs_per_sec %u != 1", |
e066b83c JK |
2592 | range.dev_num, sbi->s_ndevs, |
2593 | sbi->segs_per_sec); | |
2594 | return -EINVAL; | |
2595 | } | |
2596 | ||
2597 | ret = mnt_want_write_file(filp); | |
2598 | if (ret) | |
2599 | return ret; | |
2600 | ||
2601 | if (range.dev_num != 0) | |
2602 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2603 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2604 | ||
2605 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2606 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2607 | start_segno = dev_start_segno; | |
2608 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2609 | ||
2610 | while (start_segno < end_segno) { | |
2611 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2612 | ret = -EBUSY; | |
2613 | goto out; | |
2614 | } | |
2615 | sm->last_victim[GC_CB] = end_segno + 1; | |
2616 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2617 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2618 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2619 | if (ret == -EAGAIN) | |
2620 | ret = 0; | |
2621 | else if (ret < 0) | |
2622 | break; | |
2623 | start_segno++; | |
2624 | } | |
2625 | out: | |
2626 | mnt_drop_write_file(filp); | |
2627 | return ret; | |
2628 | } | |
2629 | ||
e65ef207 JK |
2630 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
2631 | { | |
2632 | struct inode *inode = file_inode(filp); | |
2633 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); | |
2634 | ||
2635 | /* Must validate to set it with SQLite behavior in Android. */ | |
2636 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; | |
2637 | ||
2638 | return put_user(sb_feature, (u32 __user *)arg); | |
2639 | } | |
e066b83c | 2640 | |
2c1d0305 | 2641 | #ifdef CONFIG_QUOTA |
78130819 CY |
2642 | int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid) |
2643 | { | |
2644 | struct dquot *transfer_to[MAXQUOTAS] = {}; | |
2645 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2646 | struct super_block *sb = sbi->sb; | |
2647 | int err = 0; | |
2648 | ||
2649 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); | |
2650 | if (!IS_ERR(transfer_to[PRJQUOTA])) { | |
2651 | err = __dquot_transfer(inode, transfer_to); | |
2652 | if (err) | |
2653 | set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR); | |
2654 | dqput(transfer_to[PRJQUOTA]); | |
2655 | } | |
2656 | return err; | |
2657 | } | |
2658 | ||
2c1d0305 CY |
2659 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) |
2660 | { | |
2661 | struct inode *inode = file_inode(filp); | |
2662 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2663 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2c1d0305 CY |
2664 | struct page *ipage; |
2665 | kprojid_t kprojid; | |
2666 | int err; | |
2667 | ||
7beb01f7 | 2668 | if (!f2fs_sb_has_project_quota(sbi)) { |
2c1d0305 CY |
2669 | if (projid != F2FS_DEF_PROJID) |
2670 | return -EOPNOTSUPP; | |
2671 | else | |
2672 | return 0; | |
2673 | } | |
2674 | ||
2675 | if (!f2fs_has_extra_attr(inode)) | |
2676 | return -EOPNOTSUPP; | |
2677 | ||
2678 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); | |
2679 | ||
2680 | if (projid_eq(kprojid, F2FS_I(inode)->i_projid)) | |
2681 | return 0; | |
2682 | ||
2c1d0305 | 2683 | err = -EPERM; |
2c1d0305 CY |
2684 | /* Is it quota file? Do not allow user to mess with it */ |
2685 | if (IS_NOQUOTA(inode)) | |
c8e92757 | 2686 | return err; |
2c1d0305 | 2687 | |
4d57b86d | 2688 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
c8e92757 WS |
2689 | if (IS_ERR(ipage)) |
2690 | return PTR_ERR(ipage); | |
2c1d0305 CY |
2691 | |
2692 | if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize, | |
2693 | i_projid)) { | |
2694 | err = -EOVERFLOW; | |
2695 | f2fs_put_page(ipage, 1); | |
c8e92757 | 2696 | return err; |
2c1d0305 CY |
2697 | } |
2698 | f2fs_put_page(ipage, 1); | |
2699 | ||
c22aecd7 CY |
2700 | err = dquot_initialize(inode); |
2701 | if (err) | |
c8e92757 | 2702 | return err; |
2c1d0305 | 2703 | |
78130819 CY |
2704 | f2fs_lock_op(sbi); |
2705 | err = f2fs_transfer_project_quota(inode, kprojid); | |
2706 | if (err) | |
2707 | goto out_unlock; | |
2c1d0305 CY |
2708 | |
2709 | F2FS_I(inode)->i_projid = kprojid; | |
2710 | inode->i_ctime = current_time(inode); | |
2c1d0305 | 2711 | f2fs_mark_inode_dirty_sync(inode, true); |
78130819 CY |
2712 | out_unlock: |
2713 | f2fs_unlock_op(sbi); | |
2c1d0305 CY |
2714 | return err; |
2715 | } | |
2716 | #else | |
78130819 CY |
2717 | int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid) |
2718 | { | |
2719 | return 0; | |
2720 | } | |
2721 | ||
2c1d0305 CY |
2722 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) |
2723 | { | |
2724 | if (projid != F2FS_DEF_PROJID) | |
2725 | return -EOPNOTSUPP; | |
2726 | return 0; | |
2727 | } | |
2728 | #endif | |
2729 | ||
2730 | /* Transfer internal flags to xflags */ | |
2731 | static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags) | |
2732 | { | |
2733 | __u32 xflags = 0; | |
2734 | ||
59c84408 | 2735 | if (iflags & F2FS_SYNC_FL) |
2c1d0305 | 2736 | xflags |= FS_XFLAG_SYNC; |
59c84408 | 2737 | if (iflags & F2FS_IMMUTABLE_FL) |
2c1d0305 | 2738 | xflags |= FS_XFLAG_IMMUTABLE; |
59c84408 | 2739 | if (iflags & F2FS_APPEND_FL) |
2c1d0305 | 2740 | xflags |= FS_XFLAG_APPEND; |
59c84408 | 2741 | if (iflags & F2FS_NODUMP_FL) |
2c1d0305 | 2742 | xflags |= FS_XFLAG_NODUMP; |
59c84408 | 2743 | if (iflags & F2FS_NOATIME_FL) |
2c1d0305 | 2744 | xflags |= FS_XFLAG_NOATIME; |
59c84408 | 2745 | if (iflags & F2FS_PROJINHERIT_FL) |
2c1d0305 CY |
2746 | xflags |= FS_XFLAG_PROJINHERIT; |
2747 | return xflags; | |
2748 | } | |
2749 | ||
2750 | #define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ | |
2751 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ | |
2752 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) | |
2753 | ||
2c1d0305 CY |
2754 | /* Transfer xflags flags to internal */ |
2755 | static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags) | |
2756 | { | |
2757 | unsigned long iflags = 0; | |
2758 | ||
2759 | if (xflags & FS_XFLAG_SYNC) | |
59c84408 | 2760 | iflags |= F2FS_SYNC_FL; |
2c1d0305 | 2761 | if (xflags & FS_XFLAG_IMMUTABLE) |
59c84408 | 2762 | iflags |= F2FS_IMMUTABLE_FL; |
2c1d0305 | 2763 | if (xflags & FS_XFLAG_APPEND) |
59c84408 | 2764 | iflags |= F2FS_APPEND_FL; |
2c1d0305 | 2765 | if (xflags & FS_XFLAG_NODUMP) |
59c84408 | 2766 | iflags |= F2FS_NODUMP_FL; |
2c1d0305 | 2767 | if (xflags & FS_XFLAG_NOATIME) |
59c84408 | 2768 | iflags |= F2FS_NOATIME_FL; |
2c1d0305 | 2769 | if (xflags & FS_XFLAG_PROJINHERIT) |
59c84408 | 2770 | iflags |= F2FS_PROJINHERIT_FL; |
2c1d0305 CY |
2771 | |
2772 | return iflags; | |
2773 | } | |
2774 | ||
2775 | static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) | |
2776 | { | |
2777 | struct inode *inode = file_inode(filp); | |
2778 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2779 | struct fsxattr fa; | |
2780 | ||
2781 | memset(&fa, 0, sizeof(struct fsxattr)); | |
2782 | fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags & | |
c807a7cb | 2783 | F2FS_FL_USER_VISIBLE); |
2c1d0305 | 2784 | |
7beb01f7 | 2785 | if (f2fs_sb_has_project_quota(F2FS_I_SB(inode))) |
2c1d0305 CY |
2786 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, |
2787 | fi->i_projid); | |
2788 | ||
2789 | if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) | |
2790 | return -EFAULT; | |
2791 | return 0; | |
2792 | } | |
2793 | ||
c8e92757 WS |
2794 | static int f2fs_ioctl_check_project(struct inode *inode, struct fsxattr *fa) |
2795 | { | |
2796 | /* | |
2797 | * Project Quota ID state is only allowed to change from within the init | |
2798 | * namespace. Enforce that restriction only if we are trying to change | |
2799 | * the quota ID state. Everything else is allowed in user namespaces. | |
2800 | */ | |
2801 | if (current_user_ns() == &init_user_ns) | |
2802 | return 0; | |
2803 | ||
2804 | if (__kprojid_val(F2FS_I(inode)->i_projid) != fa->fsx_projid) | |
2805 | return -EINVAL; | |
2806 | ||
2807 | if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) { | |
2808 | if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT)) | |
2809 | return -EINVAL; | |
2810 | } else { | |
2811 | if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT) | |
2812 | return -EINVAL; | |
2813 | } | |
2814 | ||
2815 | return 0; | |
2816 | } | |
2817 | ||
2c1d0305 CY |
2818 | static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) |
2819 | { | |
2820 | struct inode *inode = file_inode(filp); | |
2821 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2822 | struct fsxattr fa; | |
2823 | unsigned int flags; | |
2824 | int err; | |
2825 | ||
2826 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa))) | |
2827 | return -EFAULT; | |
2828 | ||
2829 | /* Make sure caller has proper permission */ | |
2830 | if (!inode_owner_or_capable(inode)) | |
2831 | return -EACCES; | |
2832 | ||
2833 | if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS) | |
2834 | return -EOPNOTSUPP; | |
2835 | ||
2836 | flags = f2fs_xflags_to_iflags(fa.fsx_xflags); | |
2837 | if (f2fs_mask_flags(inode->i_mode, flags) != flags) | |
2838 | return -EOPNOTSUPP; | |
2839 | ||
2840 | err = mnt_want_write_file(filp); | |
2841 | if (err) | |
2842 | return err; | |
2843 | ||
2844 | inode_lock(inode); | |
c8e92757 WS |
2845 | err = f2fs_ioctl_check_project(inode, &fa); |
2846 | if (err) | |
2847 | goto out; | |
2c1d0305 CY |
2848 | flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) | |
2849 | (flags & F2FS_FL_XFLAG_VISIBLE); | |
2850 | err = __f2fs_ioc_setflags(inode, flags); | |
2c1d0305 | 2851 | if (err) |
c8e92757 | 2852 | goto out; |
2c1d0305 CY |
2853 | |
2854 | err = f2fs_ioc_setproject(filp, fa.fsx_projid); | |
c8e92757 WS |
2855 | out: |
2856 | inode_unlock(inode); | |
2857 | mnt_drop_write_file(filp); | |
2858 | return err; | |
2c1d0305 | 2859 | } |
e066b83c | 2860 | |
1ad71a27 JK |
2861 | int f2fs_pin_file_control(struct inode *inode, bool inc) |
2862 | { | |
2863 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2864 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2865 | ||
2866 | /* Use i_gc_failures for normal file as a risk signal. */ | |
2867 | if (inc) | |
2ef79ecb CY |
2868 | f2fs_i_gc_failures_write(inode, |
2869 | fi->i_gc_failures[GC_FAILURE_PIN] + 1); | |
1ad71a27 | 2870 | |
2ef79ecb | 2871 | if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) { |
1ad71a27 | 2872 | f2fs_msg(sbi->sb, KERN_WARNING, |
bda52397 | 2873 | "%s: Enable GC = ino %lx after %x GC trials", |
2ef79ecb CY |
2874 | __func__, inode->i_ino, |
2875 | fi->i_gc_failures[GC_FAILURE_PIN]); | |
1ad71a27 JK |
2876 | clear_inode_flag(inode, FI_PIN_FILE); |
2877 | return -EAGAIN; | |
2878 | } | |
2879 | return 0; | |
2880 | } | |
2881 | ||
2882 | static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg) | |
2883 | { | |
2884 | struct inode *inode = file_inode(filp); | |
2885 | __u32 pin; | |
2886 | int ret = 0; | |
2887 | ||
aff7b628 JK |
2888 | if (!capable(CAP_SYS_ADMIN)) |
2889 | return -EPERM; | |
1ad71a27 JK |
2890 | |
2891 | if (get_user(pin, (__u32 __user *)arg)) | |
2892 | return -EFAULT; | |
2893 | ||
2894 | if (!S_ISREG(inode->i_mode)) | |
2895 | return -EINVAL; | |
2896 | ||
2897 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
2898 | return -EROFS; | |
2899 | ||
2900 | ret = mnt_want_write_file(filp); | |
2901 | if (ret) | |
2902 | return ret; | |
2903 | ||
2904 | inode_lock(inode); | |
2905 | ||
4d57b86d | 2906 | if (f2fs_should_update_outplace(inode, NULL)) { |
bb9e3bb8 CY |
2907 | ret = -EINVAL; |
2908 | goto out; | |
2909 | } | |
2910 | ||
1ad71a27 JK |
2911 | if (!pin) { |
2912 | clear_inode_flag(inode, FI_PIN_FILE); | |
30933364 | 2913 | f2fs_i_gc_failures_write(inode, 0); |
1ad71a27 JK |
2914 | goto done; |
2915 | } | |
2916 | ||
2917 | if (f2fs_pin_file_control(inode, false)) { | |
2918 | ret = -EAGAIN; | |
2919 | goto out; | |
2920 | } | |
2921 | ret = f2fs_convert_inline_inode(inode); | |
2922 | if (ret) | |
2923 | goto out; | |
2924 | ||
2925 | set_inode_flag(inode, FI_PIN_FILE); | |
2ef79ecb | 2926 | ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
1ad71a27 JK |
2927 | done: |
2928 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
2929 | out: | |
2930 | inode_unlock(inode); | |
2931 | mnt_drop_write_file(filp); | |
2932 | return ret; | |
2933 | } | |
2934 | ||
2935 | static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg) | |
2936 | { | |
2937 | struct inode *inode = file_inode(filp); | |
2938 | __u32 pin = 0; | |
2939 | ||
2940 | if (is_inode_flag_set(inode, FI_PIN_FILE)) | |
2ef79ecb | 2941 | pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
1ad71a27 JK |
2942 | return put_user(pin, (u32 __user *)arg); |
2943 | } | |
2944 | ||
c4020b2d CY |
2945 | int f2fs_precache_extents(struct inode *inode) |
2946 | { | |
2947 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2948 | struct f2fs_map_blocks map; | |
2949 | pgoff_t m_next_extent; | |
2950 | loff_t end; | |
2951 | int err; | |
2952 | ||
2953 | if (is_inode_flag_set(inode, FI_NO_EXTENT)) | |
2954 | return -EOPNOTSUPP; | |
2955 | ||
2956 | map.m_lblk = 0; | |
2957 | map.m_next_pgofs = NULL; | |
2958 | map.m_next_extent = &m_next_extent; | |
2959 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 2960 | map.m_may_create = false; |
c4020b2d CY |
2961 | end = F2FS_I_SB(inode)->max_file_blocks; |
2962 | ||
2963 | while (map.m_lblk < end) { | |
2964 | map.m_len = end - map.m_lblk; | |
2965 | ||
b2532c69 | 2966 | down_write(&fi->i_gc_rwsem[WRITE]); |
c4020b2d | 2967 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); |
b2532c69 | 2968 | up_write(&fi->i_gc_rwsem[WRITE]); |
c4020b2d CY |
2969 | if (err) |
2970 | return err; | |
2971 | ||
2972 | map.m_lblk = m_next_extent; | |
2973 | } | |
2974 | ||
2975 | return err; | |
2976 | } | |
2977 | ||
2978 | static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg) | |
2979 | { | |
2980 | return f2fs_precache_extents(file_inode(filp)); | |
2981 | } | |
2982 | ||
52656e6c JK |
2983 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2984 | { | |
1f227a3e JK |
2985 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp))))) |
2986 | return -EIO; | |
2987 | ||
52656e6c JK |
2988 | switch (cmd) { |
2989 | case F2FS_IOC_GETFLAGS: | |
2990 | return f2fs_ioc_getflags(filp, arg); | |
2991 | case F2FS_IOC_SETFLAGS: | |
2992 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2993 | case F2FS_IOC_GETVERSION: |
2994 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2995 | case F2FS_IOC_START_ATOMIC_WRITE: |
2996 | return f2fs_ioc_start_atomic_write(filp); | |
2997 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2998 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2999 | case F2FS_IOC_START_VOLATILE_WRITE: |
3000 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
3001 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
3002 | return f2fs_ioc_release_volatile_write(filp); | |
3003 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
3004 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
3005 | case F2FS_IOC_SHUTDOWN: |
3006 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
3007 | case FITRIM: |
3008 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
3009 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
3010 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
3011 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
3012 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
3013 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
3014 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
3015 | case F2FS_IOC_GARBAGE_COLLECT: |
3016 | return f2fs_ioc_gc(filp, arg); | |
34dc77ad JK |
3017 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
3018 | return f2fs_ioc_gc_range(filp, arg); | |
456b88e4 | 3019 | case F2FS_IOC_WRITE_CHECKPOINT: |
059c0648 | 3020 | return f2fs_ioc_write_checkpoint(filp, arg); |
d323d005 CY |
3021 | case F2FS_IOC_DEFRAGMENT: |
3022 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
3023 | case F2FS_IOC_MOVE_RANGE: |
3024 | return f2fs_ioc_move_range(filp, arg); | |
e066b83c JK |
3025 | case F2FS_IOC_FLUSH_DEVICE: |
3026 | return f2fs_ioc_flush_device(filp, arg); | |
e65ef207 JK |
3027 | case F2FS_IOC_GET_FEATURES: |
3028 | return f2fs_ioc_get_features(filp, arg); | |
2c1d0305 CY |
3029 | case F2FS_IOC_FSGETXATTR: |
3030 | return f2fs_ioc_fsgetxattr(filp, arg); | |
3031 | case F2FS_IOC_FSSETXATTR: | |
3032 | return f2fs_ioc_fssetxattr(filp, arg); | |
1ad71a27 JK |
3033 | case F2FS_IOC_GET_PIN_FILE: |
3034 | return f2fs_ioc_get_pin_file(filp, arg); | |
3035 | case F2FS_IOC_SET_PIN_FILE: | |
3036 | return f2fs_ioc_set_pin_file(filp, arg); | |
c4020b2d CY |
3037 | case F2FS_IOC_PRECACHE_EXTENTS: |
3038 | return f2fs_ioc_precache_extents(filp, arg); | |
fbfa2cc5 JK |
3039 | default: |
3040 | return -ENOTTY; | |
3041 | } | |
3042 | } | |
3043 | ||
fcc85a4d JK |
3044 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
3045 | { | |
b439b103 JK |
3046 | struct file *file = iocb->ki_filp; |
3047 | struct inode *inode = file_inode(file); | |
3048 | ssize_t ret; | |
fcc85a4d | 3049 | |
126ce721 CY |
3050 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { |
3051 | ret = -EIO; | |
3052 | goto out; | |
3053 | } | |
1f227a3e | 3054 | |
126ce721 CY |
3055 | if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT)) { |
3056 | ret = -EINVAL; | |
3057 | goto out; | |
3058 | } | |
b91050a8 HL |
3059 | |
3060 | if (!inode_trylock(inode)) { | |
126ce721 CY |
3061 | if (iocb->ki_flags & IOCB_NOWAIT) { |
3062 | ret = -EAGAIN; | |
3063 | goto out; | |
3064 | } | |
b91050a8 HL |
3065 | inode_lock(inode); |
3066 | } | |
3067 | ||
b439b103 JK |
3068 | ret = generic_write_checks(iocb, from); |
3069 | if (ret > 0) { | |
dc7a10dd JK |
3070 | bool preallocated = false; |
3071 | size_t target_size = 0; | |
dc91de78 | 3072 | int err; |
a7de6086 | 3073 | |
dc91de78 JK |
3074 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
3075 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 3076 | |
d5d5f0c0 CX |
3077 | if ((iocb->ki_flags & IOCB_NOWAIT)) { |
3078 | if (!f2fs_overwrite_io(inode, iocb->ki_pos, | |
b91050a8 | 3079 | iov_iter_count(from)) || |
d5d5f0c0 CX |
3080 | f2fs_has_inline_data(inode) || |
3081 | f2fs_force_buffered_io(inode, iocb, from)) { | |
3082 | clear_inode_flag(inode, FI_NO_PREALLOC); | |
3083 | inode_unlock(inode); | |
3084 | ret = -EAGAIN; | |
3085 | goto out; | |
3086 | } | |
b91050a8 | 3087 | } else { |
dc7a10dd JK |
3088 | preallocated = true; |
3089 | target_size = iocb->ki_pos + iov_iter_count(from); | |
3090 | ||
b91050a8 HL |
3091 | err = f2fs_preallocate_blocks(iocb, from); |
3092 | if (err) { | |
3093 | clear_inode_flag(inode, FI_NO_PREALLOC); | |
3094 | inode_unlock(inode); | |
126ce721 CY |
3095 | ret = err; |
3096 | goto out; | |
b91050a8 | 3097 | } |
9dfa1baf | 3098 | } |
a7de6086 | 3099 | ret = __generic_file_write_iter(iocb, from); |
dc91de78 | 3100 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b0af6d49 | 3101 | |
dc7a10dd JK |
3102 | /* if we couldn't write data, we should deallocate blocks. */ |
3103 | if (preallocated && i_size_read(inode) < target_size) | |
3104 | f2fs_truncate(inode); | |
3105 | ||
b0af6d49 CY |
3106 | if (ret > 0) |
3107 | f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); | |
b439b103 JK |
3108 | } |
3109 | inode_unlock(inode); | |
126ce721 CY |
3110 | out: |
3111 | trace_f2fs_file_write_iter(inode, iocb->ki_pos, | |
3112 | iov_iter_count(from), ret); | |
e2592217 CH |
3113 | if (ret > 0) |
3114 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 3115 | return ret; |
fcc85a4d JK |
3116 | } |
3117 | ||
e9750824 NJ |
3118 | #ifdef CONFIG_COMPAT |
3119 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
3120 | { | |
3121 | switch (cmd) { | |
3122 | case F2FS_IOC32_GETFLAGS: | |
3123 | cmd = F2FS_IOC_GETFLAGS; | |
3124 | break; | |
3125 | case F2FS_IOC32_SETFLAGS: | |
3126 | cmd = F2FS_IOC_SETFLAGS; | |
3127 | break; | |
04ef4b62 CY |
3128 | case F2FS_IOC32_GETVERSION: |
3129 | cmd = F2FS_IOC_GETVERSION; | |
3130 | break; | |
3131 | case F2FS_IOC_START_ATOMIC_WRITE: | |
3132 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
3133 | case F2FS_IOC_START_VOLATILE_WRITE: | |
3134 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
3135 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
3136 | case F2FS_IOC_SHUTDOWN: | |
3137 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
3138 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
3139 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
3140 | case F2FS_IOC_GARBAGE_COLLECT: | |
34dc77ad | 3141 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
04ef4b62 CY |
3142 | case F2FS_IOC_WRITE_CHECKPOINT: |
3143 | case F2FS_IOC_DEFRAGMENT: | |
4dd6f977 | 3144 | case F2FS_IOC_MOVE_RANGE: |
e066b83c | 3145 | case F2FS_IOC_FLUSH_DEVICE: |
e65ef207 | 3146 | case F2FS_IOC_GET_FEATURES: |
2c1d0305 CY |
3147 | case F2FS_IOC_FSGETXATTR: |
3148 | case F2FS_IOC_FSSETXATTR: | |
1ad71a27 JK |
3149 | case F2FS_IOC_GET_PIN_FILE: |
3150 | case F2FS_IOC_SET_PIN_FILE: | |
c4020b2d | 3151 | case F2FS_IOC_PRECACHE_EXTENTS: |
4dd6f977 | 3152 | break; |
e9750824 NJ |
3153 | default: |
3154 | return -ENOIOCTLCMD; | |
3155 | } | |
3156 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
3157 | } | |
3158 | #endif | |
3159 | ||
fbfa2cc5 | 3160 | const struct file_operations f2fs_file_operations = { |
267378d4 | 3161 | .llseek = f2fs_llseek, |
aad4f8bb | 3162 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
3163 | .write_iter = f2fs_file_write_iter, |
3164 | .open = f2fs_file_open, | |
12662234 | 3165 | .release = f2fs_release_file, |
fbfa2cc5 | 3166 | .mmap = f2fs_file_mmap, |
7a10f017 | 3167 | .flush = f2fs_file_flush, |
fbfa2cc5 JK |
3168 | .fsync = f2fs_sync_file, |
3169 | .fallocate = f2fs_fallocate, | |
3170 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
3171 | #ifdef CONFIG_COMPAT |
3172 | .compat_ioctl = f2fs_compat_ioctl, | |
3173 | #endif | |
fbfa2cc5 | 3174 | .splice_read = generic_file_splice_read, |
8d020765 | 3175 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 3176 | }; |