Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
fbfa2cc5 JK |
2 | * fs/f2fs/file.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/stat.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/writeback.h> | |
ae51fb31 | 16 | #include <linux/blkdev.h> |
fbfa2cc5 JK |
17 | #include <linux/falloc.h> |
18 | #include <linux/types.h> | |
e9750824 | 19 | #include <linux/compat.h> |
fbfa2cc5 JK |
20 | #include <linux/uaccess.h> |
21 | #include <linux/mount.h> | |
7f7670fe | 22 | #include <linux/pagevec.h> |
dc91de78 | 23 | #include <linux/uio.h> |
8da4b8c4 | 24 | #include <linux/uuid.h> |
4dd6f977 | 25 | #include <linux/file.h> |
fbfa2cc5 JK |
26 | |
27 | #include "f2fs.h" | |
28 | #include "node.h" | |
29 | #include "segment.h" | |
30 | #include "xattr.h" | |
31 | #include "acl.h" | |
c1c1b583 | 32 | #include "gc.h" |
db9f7c1a | 33 | #include "trace.h" |
a2a4a7e4 | 34 | #include <trace/events/f2fs.h> |
fbfa2cc5 | 35 | |
ea4d479b | 36 | static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf) |
5a3a2d83 QS |
37 | { |
38 | struct inode *inode = file_inode(vmf->vma->vm_file); | |
ea4d479b | 39 | vm_fault_t ret; |
5a3a2d83 QS |
40 | |
41 | down_read(&F2FS_I(inode)->i_mmap_sem); | |
ea4d479b | 42 | ret = filemap_fault(vmf); |
5a3a2d83 QS |
43 | up_read(&F2FS_I(inode)->i_mmap_sem); |
44 | ||
ea4d479b | 45 | return ret; |
5a3a2d83 QS |
46 | } |
47 | ||
ea4d479b | 48 | static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf) |
fbfa2cc5 JK |
49 | { |
50 | struct page *page = vmf->page; | |
11bac800 | 51 | struct inode *inode = file_inode(vmf->vma->vm_file); |
4081363f | 52 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 53 | struct dnode_of_data dn; |
e479556b | 54 | int err; |
fbfa2cc5 | 55 | |
1f227a3e JK |
56 | if (unlikely(f2fs_cp_error(sbi))) { |
57 | err = -EIO; | |
58 | goto err; | |
59 | } | |
60 | ||
fbfa2cc5 | 61 | sb_start_pagefault(inode->i_sb); |
b3d208f9 JK |
62 | |
63 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 64 | |
fbfa2cc5 | 65 | /* block allocation */ |
e479556b | 66 | f2fs_lock_op(sbi); |
b3d208f9 | 67 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 68 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
69 | if (err) { |
70 | f2fs_unlock_op(sbi); | |
b600965c | 71 | goto out; |
9ba69cf9 JK |
72 | } |
73 | f2fs_put_dnode(&dn); | |
74 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 75 | |
2c4db1a6 | 76 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 77 | |
11bac800 | 78 | file_update_time(vmf->vma->vm_file); |
5a3a2d83 | 79 | down_read(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 | 80 | lock_page(page); |
6bacf52f | 81 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 82 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 83 | !PageUptodate(page))) { |
fbfa2cc5 JK |
84 | unlock_page(page); |
85 | err = -EFAULT; | |
5a3a2d83 | 86 | goto out_sem; |
fbfa2cc5 JK |
87 | } |
88 | ||
89 | /* | |
90 | * check to see if the page is mapped already (no holes) | |
91 | */ | |
92 | if (PageMappedToDisk(page)) | |
9851e6e1 | 93 | goto mapped; |
fbfa2cc5 JK |
94 | |
95 | /* page is wholly or partially inside EOF */ | |
09cbfeaf | 96 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
9edcdabf | 97 | i_size_read(inode)) { |
193bea1d | 98 | loff_t offset; |
f11e98bd | 99 | |
09cbfeaf KS |
100 | offset = i_size_read(inode) & ~PAGE_MASK; |
101 | zero_user_segment(page, offset, PAGE_SIZE); | |
fbfa2cc5 JK |
102 | } |
103 | set_page_dirty(page); | |
237c0790 JK |
104 | if (!PageUptodate(page)) |
105 | SetPageUptodate(page); | |
fbfa2cc5 | 106 | |
b0af6d49 CY |
107 | f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE); |
108 | ||
e943a10d | 109 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
110 | mapped: |
111 | /* fill the page */ | |
fec1d657 | 112 | f2fs_wait_on_page_writeback(page, DATA, false); |
08b39fbd | 113 | |
6dbb1796 EB |
114 | /* wait for GCed page writeback via META_MAPPING */ |
115 | if (f2fs_post_read_required(inode)) | |
d4c759ee | 116 | f2fs_wait_on_block_writeback(sbi, dn.data_blkaddr); |
08b39fbd | 117 | |
5a3a2d83 QS |
118 | out_sem: |
119 | up_read(&F2FS_I(inode)->i_mmap_sem); | |
fbfa2cc5 JK |
120 | out: |
121 | sb_end_pagefault(inode->i_sb); | |
d0239e1b | 122 | f2fs_update_time(sbi, REQ_TIME); |
1f227a3e | 123 | err: |
fbfa2cc5 JK |
124 | return block_page_mkwrite_return(err); |
125 | } | |
126 | ||
127 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
5a3a2d83 | 128 | .fault = f2fs_filemap_fault, |
f1820361 | 129 | .map_pages = filemap_map_pages, |
692bb55d | 130 | .page_mkwrite = f2fs_vm_page_mkwrite, |
fbfa2cc5 JK |
131 | }; |
132 | ||
354a3399 JK |
133 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
134 | { | |
135 | struct dentry *dentry; | |
136 | ||
137 | inode = igrab(inode); | |
138 | dentry = d_find_any_alias(inode); | |
139 | iput(inode); | |
140 | if (!dentry) | |
141 | return 0; | |
142 | ||
f0947e5c JK |
143 | *pino = parent_ino(dentry); |
144 | dput(dentry); | |
354a3399 JK |
145 | return 1; |
146 | } | |
147 | ||
a5fd5050 | 148 | static inline enum cp_reason_type need_do_checkpoint(struct inode *inode) |
9d1589ef | 149 | { |
4081363f | 150 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a5fd5050 | 151 | enum cp_reason_type cp_reason = CP_NO_NEEDED; |
9d1589ef | 152 | |
a5fd5050 CY |
153 | if (!S_ISREG(inode->i_mode)) |
154 | cp_reason = CP_NON_REGULAR; | |
155 | else if (inode->i_nlink != 1) | |
156 | cp_reason = CP_HARDLINK; | |
bbf156f7 | 157 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
a5fd5050 | 158 | cp_reason = CP_SB_NEED_CP; |
9d1589ef | 159 | else if (file_wrong_pino(inode)) |
a5fd5050 | 160 | cp_reason = CP_WRONG_PINO; |
4d57b86d | 161 | else if (!f2fs_space_for_roll_forward(sbi)) |
a5fd5050 | 162 | cp_reason = CP_NO_SPC_ROLL; |
4d57b86d | 163 | else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
a5fd5050 | 164 | cp_reason = CP_NODE_NEED_CP; |
d5053a34 | 165 | else if (test_opt(sbi, FASTBOOT)) |
a5fd5050 | 166 | cp_reason = CP_FASTBOOT_MODE; |
63189b78 | 167 | else if (F2FS_OPTION(sbi).active_logs == 2) |
a5fd5050 | 168 | cp_reason = CP_SPEC_LOG_NUM; |
63189b78 | 169 | else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT && |
4d57b86d CY |
170 | f2fs_need_dentry_mark(sbi, inode->i_ino) && |
171 | f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino, | |
172 | TRANS_DIR_INO)) | |
0a007b97 | 173 | cp_reason = CP_RECOVER_DIR; |
9d1589ef | 174 | |
a5fd5050 | 175 | return cp_reason; |
9d1589ef CY |
176 | } |
177 | ||
9c7bb702 CL |
178 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
179 | { | |
180 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
181 | bool ret = false; | |
182 | /* But we need to avoid that there are some inode updates */ | |
4d57b86d | 183 | if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino)) |
9c7bb702 CL |
184 | ret = true; |
185 | f2fs_put_page(i, 0); | |
186 | return ret; | |
187 | } | |
188 | ||
51455b19 CL |
189 | static void try_to_fix_pino(struct inode *inode) |
190 | { | |
191 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
192 | nid_t pino; | |
193 | ||
194 | down_write(&fi->i_sem); | |
51455b19 CL |
195 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
196 | get_parent_ino(inode, &pino)) { | |
205b9822 | 197 | f2fs_i_pino_write(inode, pino); |
51455b19 | 198 | file_got_pino(inode); |
51455b19 | 199 | } |
ee6d182f | 200 | up_write(&fi->i_sem); |
51455b19 CL |
201 | } |
202 | ||
608514de JK |
203 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
204 | int datasync, bool atomic) | |
fbfa2cc5 JK |
205 | { |
206 | struct inode *inode = file->f_mapping->host; | |
4081363f | 207 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 208 | nid_t ino = inode->i_ino; |
fbfa2cc5 | 209 | int ret = 0; |
a5fd5050 | 210 | enum cp_reason_type cp_reason = 0; |
fbfa2cc5 | 211 | struct writeback_control wbc = { |
c81bf1c8 | 212 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
213 | .nr_to_write = LONG_MAX, |
214 | .for_reclaim = 0, | |
215 | }; | |
50fa53ec | 216 | unsigned int seq_id = 0; |
fbfa2cc5 | 217 | |
6bacf52f | 218 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
219 | return 0; |
220 | ||
a2a4a7e4 | 221 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
222 | |
223 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 224 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 225 | set_inode_flag(inode, FI_NEED_IPU); |
3b49c9a1 | 226 | ret = file_write_and_wait_range(file, start, end); |
91942321 | 227 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 228 | |
a2a4a7e4 | 229 | if (ret) { |
a5fd5050 | 230 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
fbfa2cc5 | 231 | return ret; |
a2a4a7e4 | 232 | } |
fbfa2cc5 | 233 | |
9c7bb702 | 234 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 235 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 236 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
237 | goto go_write; |
238 | } | |
239 | ||
6d99ba41 JK |
240 | /* |
241 | * if there is no written data, don't waste time to write recovery info. | |
242 | */ | |
91942321 | 243 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
4d57b86d | 244 | !f2fs_exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 245 | |
9c7bb702 CL |
246 | /* it may call write_inode just prior to fsync */ |
247 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 248 | goto go_write; |
19c9c466 | 249 | |
91942321 | 250 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
4d57b86d | 251 | f2fs_exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
252 | goto flush_out; |
253 | goto out; | |
254 | } | |
19c9c466 | 255 | go_write: |
e5d2385e JK |
256 | /* |
257 | * Both of fdatasync() and fsync() are able to be recovered from | |
258 | * sudden-power-off. | |
259 | */ | |
91942321 | 260 | down_read(&F2FS_I(inode)->i_sem); |
a5fd5050 | 261 | cp_reason = need_do_checkpoint(inode); |
91942321 | 262 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 263 | |
a5fd5050 | 264 | if (cp_reason) { |
fbfa2cc5 JK |
265 | /* all the dirty node pages should be flushed for POR */ |
266 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 267 | |
51455b19 CL |
268 | /* |
269 | * We've secured consistency through sync_fs. Following pino | |
270 | * will be used only for fsynced inodes after checkpoint. | |
271 | */ | |
272 | try_to_fix_pino(inode); | |
91942321 JK |
273 | clear_inode_flag(inode, FI_APPEND_WRITE); |
274 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
275 | goto out; |
276 | } | |
88bd02c9 | 277 | sync_nodes: |
c29fd0c0 | 278 | atomic_inc(&sbi->wb_sync_req[NODE]); |
50fa53ec | 279 | ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id); |
c29fd0c0 | 280 | atomic_dec(&sbi->wb_sync_req[NODE]); |
c267ec15 JK |
281 | if (ret) |
282 | goto out; | |
51455b19 | 283 | |
871f599f | 284 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
285 | if (unlikely(f2fs_cp_error(sbi))) { |
286 | ret = -EIO; | |
871f599f | 287 | goto out; |
6d5a1495 | 288 | } |
871f599f | 289 | |
4d57b86d | 290 | if (f2fs_need_inode_block_update(sbi, ino)) { |
7c45729a | 291 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
292 | f2fs_write_inode(inode, NULL); |
293 | goto sync_nodes; | |
fbfa2cc5 | 294 | } |
51455b19 | 295 | |
b6a245eb JK |
296 | /* |
297 | * If it's atomic_write, it's just fine to keep write ordering. So | |
298 | * here we don't need to wait for node write completion, since we use | |
299 | * node chain which serializes node blocks. If one of node writes are | |
300 | * reordered, we can see simply broken chain, resulting in stopping | |
301 | * roll-forward recovery. It means we'll recover all or none node blocks | |
302 | * given fsync mark. | |
303 | */ | |
304 | if (!atomic) { | |
50fa53ec | 305 | ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id); |
b6a245eb JK |
306 | if (ret) |
307 | goto out; | |
308 | } | |
51455b19 CL |
309 | |
310 | /* once recovery info is written, don't need to tack this */ | |
4d57b86d | 311 | f2fs_remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 312 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 313 | flush_out: |
d6290814 | 314 | if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) |
39d787be | 315 | ret = f2fs_issue_flush(sbi, inode->i_ino); |
3f06252f | 316 | if (!ret) { |
4d57b86d | 317 | f2fs_remove_ino_entry(sbi, ino, UPDATE_INO); |
3f06252f | 318 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
4d57b86d | 319 | f2fs_remove_ino_entry(sbi, ino, FLUSH_INO); |
3f06252f | 320 | } |
d0239e1b | 321 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 322 | out: |
a5fd5050 | 323 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
05ca3632 | 324 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
325 | return ret; |
326 | } | |
327 | ||
608514de JK |
328 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
329 | { | |
1f227a3e JK |
330 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file))))) |
331 | return -EIO; | |
608514de JK |
332 | return f2fs_do_sync_file(file, start, end, datasync, false); |
333 | } | |
334 | ||
7f7670fe JK |
335 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
336 | pgoff_t pgofs, int whence) | |
337 | { | |
8faab642 | 338 | struct page *page; |
7f7670fe JK |
339 | int nr_pages; |
340 | ||
341 | if (whence != SEEK_DATA) | |
342 | return 0; | |
343 | ||
344 | /* find first dirty page index */ | |
8faab642 JK |
345 | nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY, |
346 | 1, &page); | |
347 | if (!nr_pages) | |
348 | return ULONG_MAX; | |
349 | pgofs = page->index; | |
350 | put_page(page); | |
7f7670fe JK |
351 | return pgofs; |
352 | } | |
353 | ||
e1da7872 CY |
354 | static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr, |
355 | pgoff_t dirty, pgoff_t pgofs, int whence) | |
7f7670fe JK |
356 | { |
357 | switch (whence) { | |
358 | case SEEK_DATA: | |
359 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
e1da7872 | 360 | is_valid_data_blkaddr(sbi, blkaddr)) |
7f7670fe JK |
361 | return true; |
362 | break; | |
363 | case SEEK_HOLE: | |
364 | if (blkaddr == NULL_ADDR) | |
365 | return true; | |
366 | break; | |
367 | } | |
368 | return false; | |
369 | } | |
370 | ||
267378d4 CY |
371 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
372 | { | |
373 | struct inode *inode = file->f_mapping->host; | |
374 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
375 | struct dnode_of_data dn; | |
7f7670fe JK |
376 | pgoff_t pgofs, end_offset, dirty; |
377 | loff_t data_ofs = offset; | |
378 | loff_t isize; | |
267378d4 CY |
379 | int err = 0; |
380 | ||
5955102c | 381 | inode_lock(inode); |
267378d4 CY |
382 | |
383 | isize = i_size_read(inode); | |
384 | if (offset >= isize) | |
385 | goto fail; | |
386 | ||
387 | /* handle inline data case */ | |
622f28ae | 388 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
389 | if (whence == SEEK_HOLE) |
390 | data_ofs = isize; | |
391 | goto found; | |
392 | } | |
393 | ||
09cbfeaf | 394 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 395 | |
7f7670fe JK |
396 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
397 | ||
09cbfeaf | 398 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 399 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 400 | err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
401 | if (err && err != -ENOENT) { |
402 | goto fail; | |
403 | } else if (err == -ENOENT) { | |
e1c42045 | 404 | /* direct node does not exists */ |
267378d4 | 405 | if (whence == SEEK_DATA) { |
4d57b86d | 406 | pgofs = f2fs_get_next_page_offset(&dn, pgofs); |
267378d4 CY |
407 | continue; |
408 | } else { | |
409 | goto found; | |
410 | } | |
411 | } | |
412 | ||
81ca7350 | 413 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
414 | |
415 | /* find data/hole in dnode block */ | |
416 | for (; dn.ofs_in_node < end_offset; | |
417 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 418 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 419 | block_t blkaddr; |
f11e98bd | 420 | |
7a2af766 CY |
421 | blkaddr = datablock_addr(dn.inode, |
422 | dn.node_page, dn.ofs_in_node); | |
267378d4 | 423 | |
c9b60788 CY |
424 | if (__is_valid_data_blkaddr(blkaddr) && |
425 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
426 | blkaddr, DATA_GENERIC)) { | |
427 | f2fs_put_dnode(&dn); | |
428 | goto fail; | |
429 | } | |
430 | ||
e1da7872 CY |
431 | if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty, |
432 | pgofs, whence)) { | |
267378d4 CY |
433 | f2fs_put_dnode(&dn); |
434 | goto found; | |
435 | } | |
436 | } | |
437 | f2fs_put_dnode(&dn); | |
438 | } | |
439 | ||
440 | if (whence == SEEK_DATA) | |
441 | goto fail; | |
267378d4 | 442 | found: |
fe369bc8 JK |
443 | if (whence == SEEK_HOLE && data_ofs > isize) |
444 | data_ofs = isize; | |
5955102c | 445 | inode_unlock(inode); |
267378d4 CY |
446 | return vfs_setpos(file, data_ofs, maxbytes); |
447 | fail: | |
5955102c | 448 | inode_unlock(inode); |
267378d4 CY |
449 | return -ENXIO; |
450 | } | |
451 | ||
452 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
453 | { | |
454 | struct inode *inode = file->f_mapping->host; | |
455 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
456 | ||
457 | switch (whence) { | |
458 | case SEEK_SET: | |
459 | case SEEK_CUR: | |
460 | case SEEK_END: | |
461 | return generic_file_llseek_size(file, offset, whence, | |
462 | maxbytes, i_size_read(inode)); | |
463 | case SEEK_DATA: | |
464 | case SEEK_HOLE: | |
0b4c5afd JK |
465 | if (offset < 0) |
466 | return -ENXIO; | |
267378d4 CY |
467 | return f2fs_seek_block(file, offset, whence); |
468 | } | |
469 | ||
470 | return -EINVAL; | |
471 | } | |
472 | ||
fbfa2cc5 JK |
473 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
474 | { | |
b3d208f9 | 475 | struct inode *inode = file_inode(file); |
b9d777b8 | 476 | int err; |
b3d208f9 | 477 | |
1f227a3e JK |
478 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
479 | return -EIO; | |
480 | ||
b3d208f9 | 481 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
482 | err = f2fs_convert_inline_inode(inode); |
483 | if (err) | |
484 | return err; | |
b3d208f9 | 485 | |
fbfa2cc5 JK |
486 | file_accessed(file); |
487 | vma->vm_ops = &f2fs_file_vm_ops; | |
488 | return 0; | |
489 | } | |
490 | ||
fcc85a4d JK |
491 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
492 | { | |
2e168c82 | 493 | int err = fscrypt_file_open(inode, filp); |
fcc85a4d | 494 | |
2e168c82 EB |
495 | if (err) |
496 | return err; | |
b91050a8 HL |
497 | |
498 | filp->f_mode |= FMODE_NOWAIT; | |
499 | ||
0abd675e | 500 | return dquot_file_open(inode, filp); |
fcc85a4d JK |
501 | } |
502 | ||
4d57b86d | 503 | void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 504 | { |
4081363f | 505 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 506 | struct f2fs_node *raw_node; |
19b2c30d | 507 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 | 508 | __le32 *addr; |
7a2af766 CY |
509 | int base = 0; |
510 | ||
511 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
512 | base = get_extra_isize(dn->inode); | |
fbfa2cc5 | 513 | |
45590710 | 514 | raw_node = F2FS_NODE(dn->node_page); |
7a2af766 | 515 | addr = blkaddr_in_node(raw_node) + base + ofs; |
fbfa2cc5 | 516 | |
6c311ec6 | 517 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 | 518 | block_t blkaddr = le32_to_cpu(*addr); |
f11e98bd | 519 | |
fbfa2cc5 JK |
520 | if (blkaddr == NULL_ADDR) |
521 | continue; | |
522 | ||
e1509cf2 | 523 | dn->data_blkaddr = NULL_ADDR; |
4d57b86d | 524 | f2fs_set_data_blkaddr(dn); |
c9b60788 CY |
525 | |
526 | if (__is_valid_data_blkaddr(blkaddr) && | |
527 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) | |
528 | continue; | |
529 | ||
4d57b86d | 530 | f2fs_invalidate_blocks(sbi, blkaddr); |
3c6c2beb | 531 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 532 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
533 | nr_free++; |
534 | } | |
19b2c30d | 535 | |
fbfa2cc5 | 536 | if (nr_free) { |
19b2c30d CY |
537 | pgoff_t fofs; |
538 | /* | |
539 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
540 | * we will invalidate all blkaddr in the whole range. | |
541 | */ | |
4d57b86d | 542 | fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), |
81ca7350 | 543 | dn->inode) + ofs; |
19b2c30d | 544 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 545 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
546 | } |
547 | dn->ofs_in_node = ofs; | |
51dd6249 | 548 | |
d0239e1b | 549 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
550 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
551 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
552 | } |
553 | ||
4d57b86d | 554 | void f2fs_truncate_data_blocks(struct dnode_of_data *dn) |
fbfa2cc5 | 555 | { |
4d57b86d | 556 | f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
fbfa2cc5 JK |
557 | } |
558 | ||
0bfcfcca | 559 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 560 | bool cache_only) |
fbfa2cc5 | 561 | { |
193bea1d | 562 | loff_t offset = from & (PAGE_SIZE - 1); |
09cbfeaf | 563 | pgoff_t index = from >> PAGE_SHIFT; |
43f3eae1 | 564 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
565 | struct page *page; |
566 | ||
43f3eae1 | 567 | if (!offset && !cache_only) |
b3d208f9 | 568 | return 0; |
fbfa2cc5 | 569 | |
43f3eae1 | 570 | if (cache_only) { |
34b5d5c2 | 571 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
572 | if (page && PageUptodate(page)) |
573 | goto truncate_out; | |
574 | f2fs_put_page(page, 1); | |
b3d208f9 | 575 | return 0; |
43f3eae1 | 576 | } |
fbfa2cc5 | 577 | |
4d57b86d | 578 | page = f2fs_get_lock_data_page(inode, index, true); |
43f3eae1 | 579 | if (IS_ERR(page)) |
a78aaa2c | 580 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 581 | truncate_out: |
fec1d657 | 582 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 583 | zero_user(page, offset, PAGE_SIZE - offset); |
a9bcf9bc JK |
584 | |
585 | /* An encrypted inode should have a key and truncate the last page. */ | |
586 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); | |
587 | if (!cache_only) | |
0bfcfcca | 588 | set_page_dirty(page); |
fbfa2cc5 | 589 | f2fs_put_page(page, 1); |
b3d208f9 | 590 | return 0; |
fbfa2cc5 JK |
591 | } |
592 | ||
4d57b86d | 593 | int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 594 | { |
4081363f | 595 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
596 | struct dnode_of_data dn; |
597 | pgoff_t free_from; | |
9ffe0fb5 | 598 | int count = 0, err = 0; |
b3d208f9 | 599 | struct page *ipage; |
0bfcfcca | 600 | bool truncate_page = false; |
fbfa2cc5 | 601 | |
51dd6249 NJ |
602 | trace_f2fs_truncate_blocks_enter(inode, from); |
603 | ||
df033caf | 604 | free_from = (pgoff_t)F2FS_BLK_ALIGN(from); |
fbfa2cc5 | 605 | |
09210c97 CY |
606 | if (free_from >= sbi->max_file_blocks) |
607 | goto free_partial; | |
608 | ||
764aa3e9 JK |
609 | if (lock) |
610 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 611 | |
4d57b86d | 612 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
b3d208f9 JK |
613 | if (IS_ERR(ipage)) { |
614 | err = PTR_ERR(ipage); | |
615 | goto out; | |
616 | } | |
617 | ||
618 | if (f2fs_has_inline_data(inode)) { | |
4d57b86d | 619 | f2fs_truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 620 | f2fs_put_page(ipage, 1); |
0bfcfcca | 621 | truncate_page = true; |
b3d208f9 JK |
622 | goto out; |
623 | } | |
624 | ||
625 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
4d57b86d | 626 | err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
627 | if (err) { |
628 | if (err == -ENOENT) | |
629 | goto free_next; | |
b3d208f9 | 630 | goto out; |
1ce86bf6 JK |
631 | } |
632 | ||
81ca7350 | 633 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
634 | |
635 | count -= dn.ofs_in_node; | |
9850cf4a | 636 | f2fs_bug_on(sbi, count < 0); |
39936837 | 637 | |
fbfa2cc5 | 638 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
4d57b86d | 639 | f2fs_truncate_data_blocks_range(&dn, count); |
fbfa2cc5 JK |
640 | free_from += count; |
641 | } | |
642 | ||
643 | f2fs_put_dnode(&dn); | |
644 | free_next: | |
4d57b86d | 645 | err = f2fs_truncate_inode_blocks(inode, free_from); |
764d2c80 JK |
646 | out: |
647 | if (lock) | |
648 | f2fs_unlock_op(sbi); | |
09210c97 | 649 | free_partial: |
b3d208f9 JK |
650 | /* lastly zero out the first data page */ |
651 | if (!err) | |
0bfcfcca | 652 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 653 | |
51dd6249 | 654 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
655 | return err; |
656 | } | |
657 | ||
9a449e9c | 658 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 659 | { |
b0154891 CY |
660 | int err; |
661 | ||
1f227a3e JK |
662 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
663 | return -EIO; | |
664 | ||
fbfa2cc5 JK |
665 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
666 | S_ISLNK(inode->i_mode))) | |
b0154891 | 667 | return 0; |
fbfa2cc5 | 668 | |
51dd6249 NJ |
669 | trace_f2fs_truncate(inode); |
670 | ||
14b44d23 JK |
671 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
672 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { | |
673 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
674 | return -EIO; | |
675 | } | |
676 | #endif | |
92dffd01 | 677 | /* we should check inline_data size */ |
b9d777b8 | 678 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
679 | err = f2fs_convert_inline_inode(inode); |
680 | if (err) | |
681 | return err; | |
92dffd01 JK |
682 | } |
683 | ||
4d57b86d | 684 | err = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
685 | if (err) |
686 | return err; | |
687 | ||
078cd827 | 688 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 689 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 690 | return 0; |
fbfa2cc5 JK |
691 | } |
692 | ||
a528d35e | 693 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
1c6d8ee4 | 694 | u32 request_mask, unsigned int query_flags) |
fbfa2cc5 | 695 | { |
a528d35e | 696 | struct inode *inode = d_inode(path->dentry); |
1c6d8ee4 | 697 | struct f2fs_inode_info *fi = F2FS_I(inode); |
1c1d35df | 698 | struct f2fs_inode *ri; |
1c6d8ee4 CY |
699 | unsigned int flags; |
700 | ||
1c1d35df CY |
701 | if (f2fs_has_extra_attr(inode) && |
702 | f2fs_sb_has_inode_crtime(inode->i_sb) && | |
703 | F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { | |
704 | stat->result_mask |= STATX_BTIME; | |
705 | stat->btime.tv_sec = fi->i_crtime.tv_sec; | |
706 | stat->btime.tv_nsec = fi->i_crtime.tv_nsec; | |
707 | } | |
708 | ||
c807a7cb | 709 | flags = fi->i_flags & F2FS_FL_USER_VISIBLE; |
59c84408 | 710 | if (flags & F2FS_APPEND_FL) |
1c6d8ee4 | 711 | stat->attributes |= STATX_ATTR_APPEND; |
59c84408 | 712 | if (flags & F2FS_COMPR_FL) |
1c6d8ee4 CY |
713 | stat->attributes |= STATX_ATTR_COMPRESSED; |
714 | if (f2fs_encrypted_inode(inode)) | |
715 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
59c84408 | 716 | if (flags & F2FS_IMMUTABLE_FL) |
1c6d8ee4 | 717 | stat->attributes |= STATX_ATTR_IMMUTABLE; |
59c84408 | 718 | if (flags & F2FS_NODUMP_FL) |
1c6d8ee4 CY |
719 | stat->attributes |= STATX_ATTR_NODUMP; |
720 | ||
721 | stat->attributes_mask |= (STATX_ATTR_APPEND | | |
722 | STATX_ATTR_COMPRESSED | | |
723 | STATX_ATTR_ENCRYPTED | | |
724 | STATX_ATTR_IMMUTABLE | | |
725 | STATX_ATTR_NODUMP); | |
726 | ||
fbfa2cc5 | 727 | generic_fillattr(inode, stat); |
5b4267d1 JK |
728 | |
729 | /* we need to show initial sectors used for inline_data/dentries */ | |
730 | if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || | |
731 | f2fs_has_inline_dentry(inode)) | |
732 | stat->blocks += (stat->size + 511) >> 9; | |
733 | ||
fbfa2cc5 JK |
734 | return 0; |
735 | } | |
736 | ||
737 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
738 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
739 | { | |
fbfa2cc5 JK |
740 | unsigned int ia_valid = attr->ia_valid; |
741 | ||
742 | if (ia_valid & ATTR_UID) | |
743 | inode->i_uid = attr->ia_uid; | |
744 | if (ia_valid & ATTR_GID) | |
745 | inode->i_gid = attr->ia_gid; | |
746 | if (ia_valid & ATTR_ATIME) | |
95582b00 DD |
747 | inode->i_atime = timespec64_trunc(attr->ia_atime, |
748 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 749 | if (ia_valid & ATTR_MTIME) |
95582b00 DD |
750 | inode->i_mtime = timespec64_trunc(attr->ia_mtime, |
751 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 752 | if (ia_valid & ATTR_CTIME) |
95582b00 DD |
753 | inode->i_ctime = timespec64_trunc(attr->ia_ctime, |
754 | inode->i_sb->s_time_gran); | |
fbfa2cc5 JK |
755 | if (ia_valid & ATTR_MODE) { |
756 | umode_t mode = attr->ia_mode; | |
757 | ||
758 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
759 | mode &= ~S_ISGID; | |
91942321 | 760 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
761 | } |
762 | } | |
763 | #else | |
764 | #define __setattr_copy setattr_copy | |
765 | #endif | |
766 | ||
767 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
768 | { | |
2b0143b5 | 769 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 770 | int err; |
c0ed4405 | 771 | bool size_changed = false; |
fbfa2cc5 | 772 | |
1f227a3e JK |
773 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
774 | return -EIO; | |
775 | ||
31051c85 | 776 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
777 | if (err) |
778 | return err; | |
779 | ||
20bb2479 EB |
780 | err = fscrypt_prepare_setattr(dentry, attr); |
781 | if (err) | |
782 | return err; | |
783 | ||
0abd675e CY |
784 | if (is_quota_modification(inode, attr)) { |
785 | err = dquot_initialize(inode); | |
786 | if (err) | |
787 | return err; | |
788 | } | |
789 | if ((attr->ia_valid & ATTR_UID && | |
790 | !uid_eq(attr->ia_uid, inode->i_uid)) || | |
791 | (attr->ia_valid & ATTR_GID && | |
792 | !gid_eq(attr->ia_gid, inode->i_gid))) { | |
793 | err = dquot_transfer(inode, attr); | |
794 | if (err) | |
795 | return err; | |
796 | } | |
797 | ||
09db6a2e | 798 | if (attr->ia_valid & ATTR_SIZE) { |
3c454145 | 799 | if (attr->ia_size <= i_size_read(inode)) { |
5a3a2d83 | 800 | down_write(&F2FS_I(inode)->i_mmap_sem); |
09db6a2e | 801 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 802 | err = f2fs_truncate(inode); |
5a3a2d83 | 803 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b0154891 CY |
804 | if (err) |
805 | return err; | |
09db6a2e CY |
806 | } else { |
807 | /* | |
3c454145 CY |
808 | * do not trim all blocks after i_size if target size is |
809 | * larger than i_size. | |
09db6a2e | 810 | */ |
5a3a2d83 | 811 | down_write(&F2FS_I(inode)->i_mmap_sem); |
3c454145 | 812 | truncate_setsize(inode, attr->ia_size); |
5a3a2d83 | 813 | up_write(&F2FS_I(inode)->i_mmap_sem); |
0cab80ee CY |
814 | |
815 | /* should convert inline inode here */ | |
b9d777b8 | 816 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
817 | err = f2fs_convert_inline_inode(inode); |
818 | if (err) | |
819 | return err; | |
820 | } | |
078cd827 | 821 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 822 | } |
c0ed4405 | 823 | |
a0d00fad CY |
824 | down_write(&F2FS_I(inode)->i_sem); |
825 | F2FS_I(inode)->last_disk_size = i_size_read(inode); | |
826 | up_write(&F2FS_I(inode)->i_sem); | |
827 | ||
c0ed4405 | 828 | size_changed = true; |
fbfa2cc5 JK |
829 | } |
830 | ||
831 | __setattr_copy(inode, attr); | |
832 | ||
833 | if (attr->ia_valid & ATTR_MODE) { | |
4d57b86d | 834 | err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode)); |
91942321 JK |
835 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
836 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
837 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
838 | } |
839 | } | |
840 | ||
c0ed4405 YH |
841 | /* file size may changed here */ |
842 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
843 | |
844 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
845 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
846 | ||
fbfa2cc5 JK |
847 | return err; |
848 | } | |
849 | ||
850 | const struct inode_operations f2fs_file_inode_operations = { | |
851 | .getattr = f2fs_getattr, | |
852 | .setattr = f2fs_setattr, | |
853 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 854 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 855 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 856 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 857 | #endif |
9ab70134 | 858 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
859 | }; |
860 | ||
6394328a | 861 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
862 | loff_t start, loff_t len) |
863 | { | |
4081363f | 864 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
865 | struct page *page; |
866 | ||
867 | if (!len) | |
6394328a | 868 | return 0; |
fbfa2cc5 | 869 | |
2c4db1a6 | 870 | f2fs_balance_fs(sbi, true); |
bd43df02 | 871 | |
e479556b | 872 | f2fs_lock_op(sbi); |
4d57b86d | 873 | page = f2fs_get_new_data_page(inode, NULL, index, false); |
e479556b | 874 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 875 | |
6394328a CY |
876 | if (IS_ERR(page)) |
877 | return PTR_ERR(page); | |
878 | ||
fec1d657 | 879 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
880 | zero_user(page, start, len); |
881 | set_page_dirty(page); | |
882 | f2fs_put_page(page, 1); | |
883 | return 0; | |
fbfa2cc5 JK |
884 | } |
885 | ||
4d57b86d | 886 | int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
fbfa2cc5 | 887 | { |
fbfa2cc5 JK |
888 | int err; |
889 | ||
ea58711e | 890 | while (pg_start < pg_end) { |
fbfa2cc5 | 891 | struct dnode_of_data dn; |
ea58711e | 892 | pgoff_t end_offset, count; |
9eaeba70 | 893 | |
fbfa2cc5 | 894 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 895 | err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 896 | if (err) { |
ea58711e | 897 | if (err == -ENOENT) { |
4d57b86d CY |
898 | pg_start = f2fs_get_next_page_offset(&dn, |
899 | pg_start); | |
fbfa2cc5 | 900 | continue; |
ea58711e | 901 | } |
fbfa2cc5 JK |
902 | return err; |
903 | } | |
904 | ||
81ca7350 | 905 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
906 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
907 | ||
908 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
909 | ||
4d57b86d | 910 | f2fs_truncate_data_blocks_range(&dn, count); |
fbfa2cc5 | 911 | f2fs_put_dnode(&dn); |
ea58711e CY |
912 | |
913 | pg_start += count; | |
fbfa2cc5 JK |
914 | } |
915 | return 0; | |
916 | } | |
917 | ||
a66c7b2f | 918 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
919 | { |
920 | pgoff_t pg_start, pg_end; | |
921 | loff_t off_start, off_end; | |
b9d777b8 | 922 | int ret; |
fbfa2cc5 | 923 | |
b9d777b8 JK |
924 | ret = f2fs_convert_inline_inode(inode); |
925 | if (ret) | |
926 | return ret; | |
9ffe0fb5 | 927 | |
09cbfeaf KS |
928 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
929 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 930 | |
09cbfeaf KS |
931 | off_start = offset & (PAGE_SIZE - 1); |
932 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
933 | |
934 | if (pg_start == pg_end) { | |
6394328a | 935 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 936 | off_end - off_start); |
6394328a CY |
937 | if (ret) |
938 | return ret; | |
fbfa2cc5 | 939 | } else { |
6394328a CY |
940 | if (off_start) { |
941 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 942 | PAGE_SIZE - off_start); |
6394328a CY |
943 | if (ret) |
944 | return ret; | |
945 | } | |
946 | if (off_end) { | |
947 | ret = fill_zero(inode, pg_end, 0, off_end); | |
948 | if (ret) | |
949 | return ret; | |
950 | } | |
fbfa2cc5 JK |
951 | |
952 | if (pg_start < pg_end) { | |
953 | struct address_space *mapping = inode->i_mapping; | |
954 | loff_t blk_start, blk_end; | |
4081363f | 955 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 956 | |
2c4db1a6 | 957 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 958 | |
09cbfeaf KS |
959 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
960 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
5a3a2d83 | 961 | down_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
962 | truncate_inode_pages_range(mapping, blk_start, |
963 | blk_end - 1); | |
39936837 | 964 | |
e479556b | 965 | f2fs_lock_op(sbi); |
4d57b86d | 966 | ret = f2fs_truncate_hole(inode, pg_start, pg_end); |
e479556b | 967 | f2fs_unlock_op(sbi); |
5a3a2d83 | 968 | up_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
969 | } |
970 | } | |
971 | ||
fbfa2cc5 JK |
972 | return ret; |
973 | } | |
974 | ||
0a2aa8fb JK |
975 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
976 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
977 | { |
978 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
979 | struct dnode_of_data dn; | |
0a2aa8fb | 980 | int ret, done, i; |
ecbaa406 | 981 | |
0a2aa8fb | 982 | next_dnode: |
6e2c64ad | 983 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 984 | ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
985 | if (ret && ret != -ENOENT) { |
986 | return ret; | |
987 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
988 | if (dn.max_level == 0) |
989 | return -ENOENT; | |
990 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
991 | blkaddr += done; | |
992 | do_replace += done; | |
993 | goto next; | |
994 | } | |
995 | ||
996 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
997 | dn.ofs_in_node, len); | |
998 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
7a2af766 CY |
999 | *blkaddr = datablock_addr(dn.inode, |
1000 | dn.node_page, dn.ofs_in_node); | |
4d57b86d | 1001 | if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) { |
0a2aa8fb JK |
1002 | |
1003 | if (test_opt(sbi, LFS)) { | |
1004 | f2fs_put_dnode(&dn); | |
1005 | return -ENOTSUPP; | |
1006 | } | |
1007 | ||
6e2c64ad | 1008 | /* do not invalidate this block address */ |
f28b3434 | 1009 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 1010 | *do_replace = 1; |
b4ace337 | 1011 | } |
6e2c64ad | 1012 | } |
0a2aa8fb JK |
1013 | f2fs_put_dnode(&dn); |
1014 | next: | |
1015 | len -= done; | |
1016 | off += done; | |
1017 | if (len) | |
1018 | goto next_dnode; | |
1019 | return 0; | |
1020 | } | |
b4ace337 | 1021 | |
0a2aa8fb JK |
1022 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
1023 | int *do_replace, pgoff_t off, int len) | |
1024 | { | |
1025 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1026 | struct dnode_of_data dn; | |
1027 | int ret, i; | |
b4ace337 | 1028 | |
0a2aa8fb JK |
1029 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
1030 | if (*do_replace == 0) | |
1031 | continue; | |
b4ace337 | 1032 | |
0a2aa8fb | 1033 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1034 | ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); |
0a2aa8fb JK |
1035 | if (ret) { |
1036 | dec_valid_block_count(sbi, inode, 1); | |
4d57b86d | 1037 | f2fs_invalidate_blocks(sbi, *blkaddr); |
0a2aa8fb JK |
1038 | } else { |
1039 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 1040 | } |
0a2aa8fb JK |
1041 | f2fs_put_dnode(&dn); |
1042 | } | |
1043 | return 0; | |
1044 | } | |
1045 | ||
1046 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
1047 | block_t *blkaddr, int *do_replace, | |
1048 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
1049 | { | |
1050 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
1051 | pgoff_t i = 0; | |
1052 | int ret; | |
36abef4e | 1053 | |
0a2aa8fb JK |
1054 | while (i < len) { |
1055 | if (blkaddr[i] == NULL_ADDR && !full) { | |
1056 | i++; | |
1057 | continue; | |
6e2c64ad | 1058 | } |
b4ace337 | 1059 | |
0a2aa8fb JK |
1060 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
1061 | struct dnode_of_data dn; | |
1062 | struct node_info ni; | |
1063 | size_t new_size; | |
1064 | pgoff_t ilen; | |
b4ace337 | 1065 | |
0a2aa8fb | 1066 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
4d57b86d | 1067 | ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE); |
0a2aa8fb JK |
1068 | if (ret) |
1069 | return ret; | |
b4ace337 | 1070 | |
7735730d CY |
1071 | ret = f2fs_get_node_info(sbi, dn.nid, &ni); |
1072 | if (ret) { | |
1073 | f2fs_put_dnode(&dn); | |
1074 | return ret; | |
1075 | } | |
1076 | ||
0a2aa8fb JK |
1077 | ilen = min((pgoff_t) |
1078 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
1079 | dn.ofs_in_node, len - i); | |
1080 | do { | |
7a2af766 CY |
1081 | dn.data_blkaddr = datablock_addr(dn.inode, |
1082 | dn.node_page, dn.ofs_in_node); | |
4d57b86d | 1083 | f2fs_truncate_data_blocks_range(&dn, 1); |
0a2aa8fb JK |
1084 | |
1085 | if (do_replace[i]) { | |
1086 | f2fs_i_blocks_write(src_inode, | |
0abd675e | 1087 | 1, false, false); |
0a2aa8fb | 1088 | f2fs_i_blocks_write(dst_inode, |
0abd675e | 1089 | 1, true, false); |
0a2aa8fb JK |
1090 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
1091 | blkaddr[i], ni.version, true, false); | |
1092 | ||
1093 | do_replace[i] = 0; | |
1094 | } | |
1095 | dn.ofs_in_node++; | |
1096 | i++; | |
1097 | new_size = (dst + i) << PAGE_SHIFT; | |
1098 | if (dst_inode->i_size < new_size) | |
1099 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 1100 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1101 | |
0a2aa8fb JK |
1102 | f2fs_put_dnode(&dn); |
1103 | } else { | |
1104 | struct page *psrc, *pdst; | |
1105 | ||
4d57b86d CY |
1106 | psrc = f2fs_get_lock_data_page(src_inode, |
1107 | src + i, true); | |
0a2aa8fb JK |
1108 | if (IS_ERR(psrc)) |
1109 | return PTR_ERR(psrc); | |
4d57b86d | 1110 | pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i, |
0a2aa8fb JK |
1111 | true); |
1112 | if (IS_ERR(pdst)) { | |
1113 | f2fs_put_page(psrc, 1); | |
1114 | return PTR_ERR(pdst); | |
1115 | } | |
1116 | f2fs_copy_page(psrc, pdst); | |
1117 | set_page_dirty(pdst); | |
1118 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1119 | f2fs_put_page(psrc, 1); |
b4ace337 | 1120 | |
4d57b86d CY |
1121 | ret = f2fs_truncate_hole(src_inode, |
1122 | src + i, src + i + 1); | |
0a2aa8fb JK |
1123 | if (ret) |
1124 | return ret; | |
1125 | i++; | |
1126 | } | |
6e2c64ad JK |
1127 | } |
1128 | return 0; | |
0a2aa8fb | 1129 | } |
b4ace337 | 1130 | |
0a2aa8fb JK |
1131 | static int __exchange_data_block(struct inode *src_inode, |
1132 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1133 | pgoff_t len, bool full) |
0a2aa8fb JK |
1134 | { |
1135 | block_t *src_blkaddr; | |
1136 | int *do_replace; | |
363cad7f | 1137 | pgoff_t olen; |
0a2aa8fb JK |
1138 | int ret; |
1139 | ||
363cad7f JK |
1140 | while (len) { |
1141 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1142 | |
628b3d14 | 1143 | src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
9d2a789c KC |
1144 | array_size(olen, sizeof(block_t)), |
1145 | GFP_KERNEL); | |
363cad7f JK |
1146 | if (!src_blkaddr) |
1147 | return -ENOMEM; | |
0a2aa8fb | 1148 | |
628b3d14 | 1149 | do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
9d2a789c KC |
1150 | array_size(olen, sizeof(int)), |
1151 | GFP_KERNEL); | |
363cad7f JK |
1152 | if (!do_replace) { |
1153 | kvfree(src_blkaddr); | |
1154 | return -ENOMEM; | |
1155 | } | |
0a2aa8fb | 1156 | |
363cad7f JK |
1157 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1158 | do_replace, src, olen); | |
1159 | if (ret) | |
1160 | goto roll_back; | |
0a2aa8fb | 1161 | |
363cad7f JK |
1162 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1163 | do_replace, src, dst, olen, full); | |
1164 | if (ret) | |
1165 | goto roll_back; | |
1166 | ||
1167 | src += olen; | |
1168 | dst += olen; | |
1169 | len -= olen; | |
1170 | ||
1171 | kvfree(src_blkaddr); | |
1172 | kvfree(do_replace); | |
1173 | } | |
0a2aa8fb JK |
1174 | return 0; |
1175 | ||
1176 | roll_back: | |
9fd62605 | 1177 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen); |
0a2aa8fb JK |
1178 | kvfree(src_blkaddr); |
1179 | kvfree(do_replace); | |
6e2c64ad JK |
1180 | return ret; |
1181 | } | |
b4ace337 | 1182 | |
6e2c64ad JK |
1183 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1184 | { | |
1185 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1186 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1187 | int ret; |
6e2c64ad | 1188 | |
0a2aa8fb JK |
1189 | f2fs_balance_fs(sbi, true); |
1190 | f2fs_lock_op(sbi); | |
5f281fab JK |
1191 | |
1192 | f2fs_drop_extent_tree(inode); | |
1193 | ||
0a2aa8fb JK |
1194 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1195 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1196 | return ret; |
1197 | } | |
1198 | ||
1199 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1200 | { | |
1201 | pgoff_t pg_start, pg_end; | |
1202 | loff_t new_size; | |
1203 | int ret; | |
1204 | ||
b4ace337 CY |
1205 | if (offset + len >= i_size_read(inode)) |
1206 | return -EINVAL; | |
1207 | ||
1208 | /* collapse range should be aligned to block size of f2fs. */ | |
1209 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1210 | return -EINVAL; | |
1211 | ||
b9d777b8 JK |
1212 | ret = f2fs_convert_inline_inode(inode); |
1213 | if (ret) | |
1214 | return ret; | |
97a7b2c2 | 1215 | |
09cbfeaf KS |
1216 | pg_start = offset >> PAGE_SHIFT; |
1217 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 | 1218 | |
21020812 | 1219 | /* avoid gc operation during block exchange */ |
b2532c69 | 1220 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
21020812 | 1221 | |
5a3a2d83 | 1222 | down_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 CY |
1223 | /* write out all dirty pages from offset */ |
1224 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1225 | if (ret) | |
21020812 | 1226 | goto out_unlock; |
bb06664a | 1227 | |
b4ace337 CY |
1228 | truncate_pagecache(inode, offset); |
1229 | ||
1230 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1231 | if (ret) | |
bb06664a | 1232 | goto out_unlock; |
b4ace337 | 1233 | |
6e2c64ad JK |
1234 | /* write out all moved pages, if possible */ |
1235 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1236 | truncate_pagecache(inode, offset); | |
1237 | ||
b4ace337 | 1238 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1239 | truncate_pagecache(inode, new_size); |
b4ace337 | 1240 | |
4d57b86d | 1241 | ret = f2fs_truncate_blocks(inode, new_size, true); |
b4ace337 | 1242 | if (!ret) |
fc9581c8 | 1243 | f2fs_i_size_write(inode, new_size); |
bb06664a | 1244 | out_unlock: |
5a3a2d83 | 1245 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b2532c69 | 1246 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
b4ace337 CY |
1247 | return ret; |
1248 | } | |
1249 | ||
6e961949 CY |
1250 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1251 | pgoff_t end) | |
1252 | { | |
1253 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1254 | pgoff_t index = start; | |
1255 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1256 | blkcnt_t count = 0; | |
1257 | int ret; | |
1258 | ||
1259 | for (; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1260 | if (datablock_addr(dn->inode, dn->node_page, |
1261 | dn->ofs_in_node) == NULL_ADDR) | |
6e961949 CY |
1262 | count++; |
1263 | } | |
1264 | ||
1265 | dn->ofs_in_node = ofs_in_node; | |
4d57b86d | 1266 | ret = f2fs_reserve_new_blocks(dn, count); |
6e961949 CY |
1267 | if (ret) |
1268 | return ret; | |
1269 | ||
1270 | dn->ofs_in_node = ofs_in_node; | |
1271 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1272 | dn->data_blkaddr = datablock_addr(dn->inode, |
1273 | dn->node_page, dn->ofs_in_node); | |
6e961949 | 1274 | /* |
4d57b86d | 1275 | * f2fs_reserve_new_blocks will not guarantee entire block |
6e961949 CY |
1276 | * allocation. |
1277 | */ | |
1278 | if (dn->data_blkaddr == NULL_ADDR) { | |
1279 | ret = -ENOSPC; | |
1280 | break; | |
1281 | } | |
1282 | if (dn->data_blkaddr != NEW_ADDR) { | |
4d57b86d | 1283 | f2fs_invalidate_blocks(sbi, dn->data_blkaddr); |
6e961949 | 1284 | dn->data_blkaddr = NEW_ADDR; |
4d57b86d | 1285 | f2fs_set_data_blkaddr(dn); |
6e961949 CY |
1286 | } |
1287 | } | |
1288 | ||
1289 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1290 | ||
1291 | return ret; | |
1292 | } | |
1293 | ||
75cd4e09 CY |
1294 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1295 | int mode) | |
1296 | { | |
1297 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1298 | struct address_space *mapping = inode->i_mapping; | |
1299 | pgoff_t index, pg_start, pg_end; | |
1300 | loff_t new_size = i_size_read(inode); | |
1301 | loff_t off_start, off_end; | |
1302 | int ret = 0; | |
1303 | ||
75cd4e09 CY |
1304 | ret = inode_newsize_ok(inode, (len + offset)); |
1305 | if (ret) | |
1306 | return ret; | |
1307 | ||
b9d777b8 JK |
1308 | ret = f2fs_convert_inline_inode(inode); |
1309 | if (ret) | |
1310 | return ret; | |
75cd4e09 | 1311 | |
5a3a2d83 | 1312 | down_write(&F2FS_I(inode)->i_mmap_sem); |
75cd4e09 CY |
1313 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
1314 | if (ret) | |
5a3a2d83 | 1315 | goto out_sem; |
75cd4e09 CY |
1316 | |
1317 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1318 | ||
09cbfeaf KS |
1319 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1320 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1321 | |
09cbfeaf KS |
1322 | off_start = offset & (PAGE_SIZE - 1); |
1323 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1324 | |
1325 | if (pg_start == pg_end) { | |
6394328a CY |
1326 | ret = fill_zero(inode, pg_start, off_start, |
1327 | off_end - off_start); | |
1328 | if (ret) | |
5a3a2d83 | 1329 | goto out_sem; |
6394328a | 1330 | |
75cd4e09 CY |
1331 | new_size = max_t(loff_t, new_size, offset + len); |
1332 | } else { | |
1333 | if (off_start) { | |
6394328a | 1334 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1335 | PAGE_SIZE - off_start); |
6394328a | 1336 | if (ret) |
5a3a2d83 | 1337 | goto out_sem; |
6394328a | 1338 | |
75cd4e09 | 1339 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1340 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1341 | } |
1342 | ||
6e961949 | 1343 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1344 | struct dnode_of_data dn; |
6e961949 CY |
1345 | unsigned int end_offset; |
1346 | pgoff_t end; | |
75cd4e09 CY |
1347 | |
1348 | f2fs_lock_op(sbi); | |
1349 | ||
6e961949 | 1350 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1351 | ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE); |
75cd4e09 CY |
1352 | if (ret) { |
1353 | f2fs_unlock_op(sbi); | |
1354 | goto out; | |
1355 | } | |
1356 | ||
6e961949 CY |
1357 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1358 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1359 | ||
1360 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1361 | f2fs_put_dnode(&dn); |
1362 | f2fs_unlock_op(sbi); | |
9434fcde CY |
1363 | |
1364 | f2fs_balance_fs(sbi, dn.node_changed); | |
1365 | ||
6e961949 CY |
1366 | if (ret) |
1367 | goto out; | |
75cd4e09 | 1368 | |
6e961949 | 1369 | index = end; |
75cd4e09 | 1370 | new_size = max_t(loff_t, new_size, |
6e961949 | 1371 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1372 | } |
1373 | ||
1374 | if (off_end) { | |
6394328a CY |
1375 | ret = fill_zero(inode, pg_end, 0, off_end); |
1376 | if (ret) | |
1377 | goto out; | |
1378 | ||
75cd4e09 CY |
1379 | new_size = max_t(loff_t, new_size, offset + len); |
1380 | } | |
1381 | } | |
1382 | ||
1383 | out: | |
17cd07ae CY |
1384 | if (new_size > i_size_read(inode)) { |
1385 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1386 | file_set_keep_isize(inode); | |
1387 | else | |
1388 | f2fs_i_size_write(inode, new_size); | |
1389 | } | |
5a3a2d83 QS |
1390 | out_sem: |
1391 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
75cd4e09 CY |
1392 | |
1393 | return ret; | |
1394 | } | |
1395 | ||
f62185d0 CY |
1396 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1397 | { | |
1398 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1399 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1400 | loff_t new_size; |
6e2c64ad | 1401 | int ret = 0; |
f62185d0 | 1402 | |
f62185d0 | 1403 | new_size = i_size_read(inode) + len; |
46e82fb1 KM |
1404 | ret = inode_newsize_ok(inode, new_size); |
1405 | if (ret) | |
1406 | return ret; | |
f62185d0 CY |
1407 | |
1408 | if (offset >= i_size_read(inode)) | |
1409 | return -EINVAL; | |
1410 | ||
1411 | /* insert range should be aligned to block size of f2fs. */ | |
1412 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1413 | return -EINVAL; | |
1414 | ||
b9d777b8 JK |
1415 | ret = f2fs_convert_inline_inode(inode); |
1416 | if (ret) | |
1417 | return ret; | |
97a7b2c2 | 1418 | |
2c4db1a6 | 1419 | f2fs_balance_fs(sbi, true); |
2a340760 | 1420 | |
21020812 | 1421 | /* avoid gc operation during block exchange */ |
b2532c69 | 1422 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
21020812 | 1423 | |
5a3a2d83 | 1424 | down_write(&F2FS_I(inode)->i_mmap_sem); |
4d57b86d | 1425 | ret = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
f62185d0 | 1426 | if (ret) |
5a3a2d83 | 1427 | goto out; |
f62185d0 CY |
1428 | |
1429 | /* write out all dirty pages from offset */ | |
1430 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1431 | if (ret) | |
5a3a2d83 | 1432 | goto out; |
f62185d0 CY |
1433 | |
1434 | truncate_pagecache(inode, offset); | |
1435 | ||
09cbfeaf KS |
1436 | pg_start = offset >> PAGE_SHIFT; |
1437 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1438 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1439 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1440 | ||
1441 | while (!ret && idx > pg_start) { | |
1442 | nr = idx - pg_start; | |
1443 | if (nr > delta) | |
1444 | nr = delta; | |
1445 | idx -= nr; | |
f62185d0 | 1446 | |
f62185d0 | 1447 | f2fs_lock_op(sbi); |
5f281fab JK |
1448 | f2fs_drop_extent_tree(inode); |
1449 | ||
0a2aa8fb JK |
1450 | ret = __exchange_data_block(inode, inode, idx, |
1451 | idx + delta, nr, false); | |
f62185d0 CY |
1452 | f2fs_unlock_op(sbi); |
1453 | } | |
1454 | ||
6e2c64ad JK |
1455 | /* write out all moved pages, if possible */ |
1456 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1457 | truncate_pagecache(inode, offset); | |
1458 | ||
1459 | if (!ret) | |
fc9581c8 | 1460 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1461 | out: |
1462 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
b2532c69 | 1463 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
f62185d0 CY |
1464 | return ret; |
1465 | } | |
1466 | ||
fbfa2cc5 JK |
1467 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1468 | loff_t len, int mode) | |
1469 | { | |
4081363f | 1470 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
d5097be5 | 1471 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL, |
c4020b2d | 1472 | .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE }; |
e12dd7bd | 1473 | pgoff_t pg_end; |
fbfa2cc5 | 1474 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1475 | loff_t off_end; |
a7de6086 | 1476 | int err; |
fbfa2cc5 | 1477 | |
a7de6086 JK |
1478 | err = inode_newsize_ok(inode, (len + offset)); |
1479 | if (err) | |
1480 | return err; | |
fbfa2cc5 | 1481 | |
a7de6086 JK |
1482 | err = f2fs_convert_inline_inode(inode); |
1483 | if (err) | |
1484 | return err; | |
9e09fc85 | 1485 | |
2c4db1a6 | 1486 | f2fs_balance_fs(sbi, true); |
2a340760 | 1487 | |
e12dd7bd | 1488 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1489 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1490 | |
e12dd7bd JK |
1491 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1492 | map.m_len = pg_end - map.m_lblk; | |
1493 | if (off_end) | |
1494 | map.m_len++; | |
ead43275 | 1495 | |
a7de6086 JK |
1496 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1497 | if (err) { | |
e12dd7bd | 1498 | pgoff_t last_off; |
fbfa2cc5 | 1499 | |
e12dd7bd | 1500 | if (!map.m_len) |
a7de6086 | 1501 | return err; |
98397ff3 | 1502 | |
e12dd7bd JK |
1503 | last_off = map.m_lblk + map.m_len - 1; |
1504 | ||
1505 | /* update new size to the failed position */ | |
1061fd48 | 1506 | new_size = (last_off == pg_end) ? offset + len : |
e12dd7bd JK |
1507 | (loff_t)(last_off + 1) << PAGE_SHIFT; |
1508 | } else { | |
1509 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1510 | } |
1511 | ||
e8ed90a6 CY |
1512 | if (new_size > i_size_read(inode)) { |
1513 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1514 | file_set_keep_isize(inode); | |
1515 | else | |
1516 | f2fs_i_size_write(inode, new_size); | |
1517 | } | |
fbfa2cc5 | 1518 | |
a7de6086 | 1519 | return err; |
fbfa2cc5 JK |
1520 | } |
1521 | ||
1522 | static long f2fs_fallocate(struct file *file, int mode, | |
1523 | loff_t offset, loff_t len) | |
1524 | { | |
6131ffaa | 1525 | struct inode *inode = file_inode(file); |
587c0a42 | 1526 | long ret = 0; |
fbfa2cc5 | 1527 | |
1f227a3e JK |
1528 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
1529 | return -EIO; | |
1530 | ||
c998012b CY |
1531 | /* f2fs only support ->fallocate for regular file */ |
1532 | if (!S_ISREG(inode->i_mode)) | |
1533 | return -EINVAL; | |
1534 | ||
f62185d0 CY |
1535 | if (f2fs_encrypted_inode(inode) && |
1536 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1537 | return -EOPNOTSUPP; |
1538 | ||
b4ace337 | 1539 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1540 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1541 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1542 | return -EOPNOTSUPP; |
1543 | ||
5955102c | 1544 | inode_lock(inode); |
3375f696 | 1545 | |
587c0a42 TY |
1546 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1547 | if (offset >= inode->i_size) | |
1548 | goto out; | |
1549 | ||
a66c7b2f | 1550 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1551 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1552 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1553 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1554 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1555 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1556 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1557 | } else { |
fbfa2cc5 | 1558 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1559 | } |
fbfa2cc5 | 1560 | |
3af60a49 | 1561 | if (!ret) { |
078cd827 | 1562 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1563 | f2fs_mark_inode_dirty_sync(inode, false); |
d0239e1b | 1564 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1565 | } |
3375f696 | 1566 | |
587c0a42 | 1567 | out: |
5955102c | 1568 | inode_unlock(inode); |
3375f696 | 1569 | |
c01e2853 | 1570 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1571 | return ret; |
1572 | } | |
1573 | ||
1e84371f JK |
1574 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1575 | { | |
de5307e4 JK |
1576 | /* |
1577 | * f2fs_relase_file is called at every close calls. So we should | |
1578 | * not drop any inmemory pages by close called by other process. | |
1579 | */ | |
1580 | if (!(filp->f_mode & FMODE_WRITE) || | |
1581 | atomic_read(&inode->i_writecount) != 1) | |
1582 | return 0; | |
1583 | ||
1e84371f JK |
1584 | /* some remained atomic pages should discarded */ |
1585 | if (f2fs_is_atomic_file(inode)) | |
4d57b86d | 1586 | f2fs_drop_inmem_pages(inode); |
1e84371f | 1587 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1588 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1589 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1590 | clear_inode_flag(inode, FI_DROP_CACHE); |
dfa74280 CY |
1591 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1592 | stat_dec_volatile_write(inode); | |
1e84371f JK |
1593 | } |
1594 | return 0; | |
1595 | } | |
1596 | ||
7a10f017 | 1597 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
fbfa2cc5 | 1598 | { |
7a10f017 JK |
1599 | struct inode *inode = file_inode(file); |
1600 | ||
1601 | /* | |
1602 | * If the process doing a transaction is crashed, we should do | |
1603 | * roll-back. Otherwise, other reader/write can see corrupted database | |
1604 | * until all the writers close its file. Since this should be done | |
1605 | * before dropping file lock, it needs to do in ->flush. | |
1606 | */ | |
1607 | if (f2fs_is_atomic_file(inode) && | |
1608 | F2FS_I(inode)->inmem_task == current) | |
4d57b86d | 1609 | f2fs_drop_inmem_pages(inode); |
7a10f017 | 1610 | return 0; |
fbfa2cc5 JK |
1611 | } |
1612 | ||
52656e6c | 1613 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1614 | { |
6131ffaa | 1615 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1616 | struct f2fs_inode_info *fi = F2FS_I(inode); |
76481158 CY |
1617 | unsigned int flags = fi->i_flags; |
1618 | ||
5b72d5e0 | 1619 | if (f2fs_encrypted_inode(inode)) |
76481158 CY |
1620 | flags |= F2FS_ENCRYPT_FL; |
1621 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) | |
1622 | flags |= F2FS_INLINE_DATA_FL; | |
1623 | ||
1624 | flags &= F2FS_FL_USER_VISIBLE; | |
1625 | ||
52656e6c JK |
1626 | return put_user(flags, (int __user *)arg); |
1627 | } | |
fbfa2cc5 | 1628 | |
2c1d0305 CY |
1629 | static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags) |
1630 | { | |
1631 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1632 | unsigned int oldflags; | |
1633 | ||
1634 | /* Is it quota file? Do not allow user to mess with it */ | |
1635 | if (IS_NOQUOTA(inode)) | |
1636 | return -EPERM; | |
1637 | ||
1638 | flags = f2fs_mask_flags(inode->i_mode, flags); | |
1639 | ||
1640 | oldflags = fi->i_flags; | |
1641 | ||
59c84408 | 1642 | if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) |
2c1d0305 CY |
1643 | if (!capable(CAP_LINUX_IMMUTABLE)) |
1644 | return -EPERM; | |
1645 | ||
c807a7cb CY |
1646 | flags = flags & F2FS_FL_USER_MODIFIABLE; |
1647 | flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE; | |
2c1d0305 CY |
1648 | fi->i_flags = flags; |
1649 | ||
59c84408 | 1650 | if (fi->i_flags & F2FS_PROJINHERIT_FL) |
2c1d0305 CY |
1651 | set_inode_flag(inode, FI_PROJ_INHERIT); |
1652 | else | |
1653 | clear_inode_flag(inode, FI_PROJ_INHERIT); | |
1654 | ||
1655 | inode->i_ctime = current_time(inode); | |
1656 | f2fs_set_inode_flags(inode); | |
1657 | f2fs_mark_inode_dirty_sync(inode, false); | |
1658 | return 0; | |
1659 | } | |
1660 | ||
52656e6c JK |
1661 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1662 | { | |
1663 | struct inode *inode = file_inode(filp); | |
69494229 | 1664 | unsigned int flags; |
52656e6c | 1665 | int ret; |
fbfa2cc5 | 1666 | |
7fb17fe4 CY |
1667 | if (!inode_owner_or_capable(inode)) |
1668 | return -EACCES; | |
1669 | ||
1670 | if (get_user(flags, (int __user *)arg)) | |
1671 | return -EFAULT; | |
1672 | ||
52656e6c JK |
1673 | ret = mnt_want_write_file(filp); |
1674 | if (ret) | |
1675 | return ret; | |
fbfa2cc5 | 1676 | |
5955102c | 1677 | inode_lock(inode); |
fbfa2cc5 | 1678 | |
2c1d0305 | 1679 | ret = __f2fs_ioc_setflags(inode, flags); |
fbfa2cc5 | 1680 | |
a72d4b97 | 1681 | inode_unlock(inode); |
52656e6c JK |
1682 | mnt_drop_write_file(filp); |
1683 | return ret; | |
1684 | } | |
4b2fecc8 | 1685 | |
d49f3e89 CY |
1686 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1687 | { | |
1688 | struct inode *inode = file_inode(filp); | |
1689 | ||
1690 | return put_user(inode->i_generation, (int __user *)arg); | |
1691 | } | |
1692 | ||
88b88a66 JK |
1693 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1694 | { | |
1695 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1696 | int ret; |
88b88a66 JK |
1697 | |
1698 | if (!inode_owner_or_capable(inode)) | |
1699 | return -EACCES; | |
1700 | ||
e811898c JK |
1701 | if (!S_ISREG(inode->i_mode)) |
1702 | return -EINVAL; | |
1703 | ||
7fb17fe4 CY |
1704 | ret = mnt_want_write_file(filp); |
1705 | if (ret) | |
1706 | return ret; | |
1707 | ||
0fac558b CY |
1708 | inode_lock(inode); |
1709 | ||
b2532c69 | 1710 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
27319ba4 | 1711 | |
455e3a58 JK |
1712 | if (f2fs_is_atomic_file(inode)) { |
1713 | if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) | |
1714 | ret = -EINVAL; | |
7fb17fe4 | 1715 | goto out; |
455e3a58 | 1716 | } |
88b88a66 | 1717 | |
f4c9c743 CY |
1718 | ret = f2fs_convert_inline_inode(inode); |
1719 | if (ret) | |
7fb17fe4 | 1720 | goto out; |
88b88a66 | 1721 | |
c27753d6 | 1722 | if (!get_dirty_pages(inode)) |
054afda9 | 1723 | goto skip_flush; |
c27753d6 JK |
1724 | |
1725 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1726 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1727 | inode->i_ino, get_dirty_pages(inode)); |
1728 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
054afda9 | 1729 | if (ret) |
684ca7e5 | 1730 | goto out; |
054afda9 | 1731 | skip_flush: |
054afda9 | 1732 | set_inode_flag(inode, FI_ATOMIC_FILE); |
2ef79ecb | 1733 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
054afda9 | 1734 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
684ca7e5 | 1735 | |
7a10f017 | 1736 | F2FS_I(inode)->inmem_task = current; |
26a28a0c JK |
1737 | stat_inc_atomic_write(inode); |
1738 | stat_update_max_atomic_write(inode); | |
684ca7e5 | 1739 | out: |
b2532c69 | 1740 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
0fac558b | 1741 | inode_unlock(inode); |
7fb17fe4 | 1742 | mnt_drop_write_file(filp); |
c27753d6 | 1743 | return ret; |
88b88a66 JK |
1744 | } |
1745 | ||
1746 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1747 | { | |
1748 | struct inode *inode = file_inode(filp); | |
1749 | int ret; | |
1750 | ||
1751 | if (!inode_owner_or_capable(inode)) | |
1752 | return -EACCES; | |
1753 | ||
1754 | ret = mnt_want_write_file(filp); | |
1755 | if (ret) | |
1756 | return ret; | |
1757 | ||
0fac558b CY |
1758 | inode_lock(inode); |
1759 | ||
b2532c69 | 1760 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
1dc0f899 | 1761 | |
b169c3c5 CY |
1762 | if (f2fs_is_volatile_file(inode)) { |
1763 | ret = -EINVAL; | |
7fb17fe4 | 1764 | goto err_out; |
b169c3c5 | 1765 | } |
7fb17fe4 | 1766 | |
6282adbf | 1767 | if (f2fs_is_atomic_file(inode)) { |
4d57b86d | 1768 | ret = f2fs_commit_inmem_pages(inode); |
5fe45743 | 1769 | if (ret) |
edb27dee | 1770 | goto err_out; |
5fe45743 | 1771 | |
26a28a0c | 1772 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1773 | if (!ret) { |
1774 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
2ef79ecb | 1775 | F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0; |
5fe45743 | 1776 | stat_dec_atomic_write(inode); |
447135a8 | 1777 | } |
26a28a0c | 1778 | } else { |
774e1b78 | 1779 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
6282adbf | 1780 | } |
edb27dee | 1781 | err_out: |
2ef79ecb CY |
1782 | if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { |
1783 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); | |
1784 | ret = -EINVAL; | |
1785 | } | |
b2532c69 | 1786 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
0fac558b | 1787 | inode_unlock(inode); |
88b88a66 JK |
1788 | mnt_drop_write_file(filp); |
1789 | return ret; | |
1790 | } | |
1791 | ||
02a1335f JK |
1792 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1793 | { | |
1794 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1795 | int ret; |
02a1335f JK |
1796 | |
1797 | if (!inode_owner_or_capable(inode)) | |
1798 | return -EACCES; | |
1799 | ||
8ff0971f CY |
1800 | if (!S_ISREG(inode->i_mode)) |
1801 | return -EINVAL; | |
1802 | ||
7fb17fe4 CY |
1803 | ret = mnt_want_write_file(filp); |
1804 | if (ret) | |
1805 | return ret; | |
1806 | ||
0fac558b CY |
1807 | inode_lock(inode); |
1808 | ||
1e84371f | 1809 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1810 | goto out; |
1e84371f | 1811 | |
f4c9c743 CY |
1812 | ret = f2fs_convert_inline_inode(inode); |
1813 | if (ret) | |
7fb17fe4 | 1814 | goto out; |
b3d208f9 | 1815 | |
648d50ba CY |
1816 | stat_inc_volatile_write(inode); |
1817 | stat_update_max_volatile_write(inode); | |
1818 | ||
91942321 | 1819 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1820 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1821 | out: |
0fac558b | 1822 | inode_unlock(inode); |
7fb17fe4 CY |
1823 | mnt_drop_write_file(filp); |
1824 | return ret; | |
02a1335f JK |
1825 | } |
1826 | ||
1e84371f JK |
1827 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1828 | { | |
1829 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1830 | int ret; |
1e84371f JK |
1831 | |
1832 | if (!inode_owner_or_capable(inode)) | |
1833 | return -EACCES; | |
1834 | ||
7fb17fe4 CY |
1835 | ret = mnt_want_write_file(filp); |
1836 | if (ret) | |
1837 | return ret; | |
1838 | ||
0fac558b CY |
1839 | inode_lock(inode); |
1840 | ||
1e84371f | 1841 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1842 | goto out; |
1e84371f | 1843 | |
7fb17fe4 CY |
1844 | if (!f2fs_is_first_block_written(inode)) { |
1845 | ret = truncate_partial_data_page(inode, 0, true); | |
1846 | goto out; | |
1847 | } | |
3c6c2beb | 1848 | |
7fb17fe4 CY |
1849 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1850 | out: | |
0fac558b | 1851 | inode_unlock(inode); |
7fb17fe4 CY |
1852 | mnt_drop_write_file(filp); |
1853 | return ret; | |
1e84371f JK |
1854 | } |
1855 | ||
1856 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1857 | { | |
1858 | struct inode *inode = file_inode(filp); | |
1859 | int ret; | |
1860 | ||
1861 | if (!inode_owner_or_capable(inode)) | |
1862 | return -EACCES; | |
1863 | ||
1864 | ret = mnt_want_write_file(filp); | |
1865 | if (ret) | |
1866 | return ret; | |
1867 | ||
0fac558b CY |
1868 | inode_lock(inode); |
1869 | ||
26dc3d44 | 1870 | if (f2fs_is_atomic_file(inode)) |
4d57b86d | 1871 | f2fs_drop_inmem_pages(inode); |
732d5648 | 1872 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1873 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1874 | stat_dec_volatile_write(inode); |
608514de | 1875 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1876 | } |
de6a8ec9 | 1877 | |
455e3a58 JK |
1878 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
1879 | ||
0fac558b CY |
1880 | inode_unlock(inode); |
1881 | ||
1e84371f | 1882 | mnt_drop_write_file(filp); |
d0239e1b | 1883 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1884 | return ret; |
1885 | } | |
1886 | ||
1abff93d JK |
1887 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1888 | { | |
1889 | struct inode *inode = file_inode(filp); | |
1890 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1891 | struct super_block *sb = sbi->sb; | |
1892 | __u32 in; | |
2a96d8ad | 1893 | int ret = 0; |
1abff93d JK |
1894 | |
1895 | if (!capable(CAP_SYS_ADMIN)) | |
1896 | return -EPERM; | |
1897 | ||
1898 | if (get_user(in, (__u32 __user *)arg)) | |
1899 | return -EFAULT; | |
1900 | ||
60b2b4ee ST |
1901 | if (in != F2FS_GOING_DOWN_FULLSYNC) { |
1902 | ret = mnt_want_write_file(filp); | |
1903 | if (ret) | |
1904 | return ret; | |
1905 | } | |
7fb17fe4 | 1906 | |
1abff93d JK |
1907 | switch (in) { |
1908 | case F2FS_GOING_DOWN_FULLSYNC: | |
1909 | sb = freeze_bdev(sb->s_bdev); | |
d027c484 CY |
1910 | if (IS_ERR(sb)) { |
1911 | ret = PTR_ERR(sb); | |
1912 | goto out; | |
1913 | } | |
1914 | if (sb) { | |
38f91ca8 | 1915 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1916 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d JK |
1917 | thaw_bdev(sb->s_bdev, sb); |
1918 | } | |
1919 | break; | |
1920 | case F2FS_GOING_DOWN_METASYNC: | |
1921 | /* do checkpoint only */ | |
d027c484 CY |
1922 | ret = f2fs_sync_fs(sb, 1); |
1923 | if (ret) | |
1924 | goto out; | |
38f91ca8 | 1925 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1926 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d JK |
1927 | break; |
1928 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1929 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1930 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
1abff93d | 1931 | break; |
c912a829 | 1932 | case F2FS_GOING_DOWN_METAFLUSH: |
4d57b86d | 1933 | f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); |
38f91ca8 | 1934 | f2fs_stop_checkpoint(sbi, false); |
83a3bfdb | 1935 | set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
c912a829 | 1936 | break; |
1abff93d | 1937 | default: |
7fb17fe4 CY |
1938 | ret = -EINVAL; |
1939 | goto out; | |
1abff93d | 1940 | } |
7950e9ac | 1941 | |
4d57b86d CY |
1942 | f2fs_stop_gc_thread(sbi); |
1943 | f2fs_stop_discard_thread(sbi); | |
7950e9ac | 1944 | |
4d57b86d | 1945 | f2fs_drop_discard_cmd(sbi); |
7950e9ac CY |
1946 | clear_opt(sbi, DISCARD); |
1947 | ||
d0239e1b | 1948 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 | 1949 | out: |
60b2b4ee ST |
1950 | if (in != F2FS_GOING_DOWN_FULLSYNC) |
1951 | mnt_drop_write_file(filp); | |
7fb17fe4 | 1952 | return ret; |
1abff93d JK |
1953 | } |
1954 | ||
52656e6c JK |
1955 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1956 | { | |
1957 | struct inode *inode = file_inode(filp); | |
1958 | struct super_block *sb = inode->i_sb; | |
1959 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1960 | struct fstrim_range range; | |
1961 | int ret; | |
4b2fecc8 | 1962 | |
52656e6c JK |
1963 | if (!capable(CAP_SYS_ADMIN)) |
1964 | return -EPERM; | |
4b2fecc8 | 1965 | |
52656e6c JK |
1966 | if (!blk_queue_discard(q)) |
1967 | return -EOPNOTSUPP; | |
4b2fecc8 | 1968 | |
52656e6c JK |
1969 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1970 | sizeof(range))) | |
1971 | return -EFAULT; | |
4b2fecc8 | 1972 | |
7fb17fe4 CY |
1973 | ret = mnt_want_write_file(filp); |
1974 | if (ret) | |
1975 | return ret; | |
1976 | ||
52656e6c JK |
1977 | range.minlen = max((unsigned int)range.minlen, |
1978 | q->limits.discard_granularity); | |
1979 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1980 | mnt_drop_write_file(filp); |
52656e6c JK |
1981 | if (ret < 0) |
1982 | return ret; | |
4b2fecc8 | 1983 | |
52656e6c JK |
1984 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1985 | sizeof(range))) | |
1986 | return -EFAULT; | |
d0239e1b | 1987 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1988 | return 0; |
1989 | } | |
1990 | ||
f424f664 JK |
1991 | static bool uuid_is_nonzero(__u8 u[16]) |
1992 | { | |
1993 | int i; | |
1994 | ||
1995 | for (i = 0; i < 16; i++) | |
1996 | if (u[i]) | |
1997 | return true; | |
1998 | return false; | |
1999 | } | |
2000 | ||
2001 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
2002 | { | |
f424f664 JK |
2003 | struct inode *inode = file_inode(filp); |
2004 | ||
ccd31cb2 | 2005 | if (!f2fs_sb_has_encrypt(inode->i_sb)) |
ead710b7 CY |
2006 | return -EOPNOTSUPP; |
2007 | ||
d0239e1b | 2008 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 2009 | |
db717d8e | 2010 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
2011 | } |
2012 | ||
2013 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
2014 | { | |
ccd31cb2 | 2015 | if (!f2fs_sb_has_encrypt(file_inode(filp)->i_sb)) |
ead710b7 | 2016 | return -EOPNOTSUPP; |
db717d8e | 2017 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
2018 | } |
2019 | ||
2020 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
2021 | { | |
2022 | struct inode *inode = file_inode(filp); | |
2023 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2024 | int err; | |
2025 | ||
ccd31cb2 | 2026 | if (!f2fs_sb_has_encrypt(inode->i_sb)) |
f424f664 JK |
2027 | return -EOPNOTSUPP; |
2028 | ||
f424f664 JK |
2029 | err = mnt_want_write_file(filp); |
2030 | if (err) | |
2031 | return err; | |
2032 | ||
846ae671 | 2033 | down_write(&sbi->sb_lock); |
d0d3f1b3 CY |
2034 | |
2035 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
2036 | goto got_it; | |
2037 | ||
f424f664 JK |
2038 | /* update superblock with uuid */ |
2039 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
2040 | ||
c5bda1c8 | 2041 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
2042 | if (err) { |
2043 | /* undo new data */ | |
2044 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
d0d3f1b3 | 2045 | goto out_err; |
f424f664 JK |
2046 | } |
2047 | got_it: | |
2048 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
2049 | 16)) | |
d0d3f1b3 CY |
2050 | err = -EFAULT; |
2051 | out_err: | |
846ae671 | 2052 | up_write(&sbi->sb_lock); |
d0d3f1b3 CY |
2053 | mnt_drop_write_file(filp); |
2054 | return err; | |
f424f664 JK |
2055 | } |
2056 | ||
c1c1b583 CY |
2057 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
2058 | { | |
2059 | struct inode *inode = file_inode(filp); | |
2060 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 2061 | __u32 sync; |
7fb17fe4 | 2062 | int ret; |
c1c1b583 CY |
2063 | |
2064 | if (!capable(CAP_SYS_ADMIN)) | |
2065 | return -EPERM; | |
2066 | ||
d530d4d8 | 2067 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
2068 | return -EFAULT; |
2069 | ||
d530d4d8 CY |
2070 | if (f2fs_readonly(sbi->sb)) |
2071 | return -EROFS; | |
c1c1b583 | 2072 | |
7fb17fe4 CY |
2073 | ret = mnt_want_write_file(filp); |
2074 | if (ret) | |
2075 | return ret; | |
2076 | ||
d530d4d8 | 2077 | if (!sync) { |
7fb17fe4 CY |
2078 | if (!mutex_trylock(&sbi->gc_mutex)) { |
2079 | ret = -EBUSY; | |
2080 | goto out; | |
2081 | } | |
d530d4d8 CY |
2082 | } else { |
2083 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
2084 | } |
2085 | ||
e066b83c | 2086 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
7fb17fe4 CY |
2087 | out: |
2088 | mnt_drop_write_file(filp); | |
2089 | return ret; | |
c1c1b583 CY |
2090 | } |
2091 | ||
34dc77ad JK |
2092 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
2093 | { | |
2094 | struct inode *inode = file_inode(filp); | |
2095 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2096 | struct f2fs_gc_range range; | |
2097 | u64 end; | |
2098 | int ret; | |
2099 | ||
2100 | if (!capable(CAP_SYS_ADMIN)) | |
2101 | return -EPERM; | |
2102 | ||
2103 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, | |
2104 | sizeof(range))) | |
2105 | return -EFAULT; | |
2106 | ||
2107 | if (f2fs_readonly(sbi->sb)) | |
2108 | return -EROFS; | |
2109 | ||
b82f6e34 YH |
2110 | end = range.start + range.len; |
2111 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) { | |
2112 | return -EINVAL; | |
2113 | } | |
2114 | ||
34dc77ad JK |
2115 | ret = mnt_want_write_file(filp); |
2116 | if (ret) | |
2117 | return ret; | |
2118 | ||
34dc77ad JK |
2119 | do_more: |
2120 | if (!range.sync) { | |
2121 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2122 | ret = -EBUSY; | |
2123 | goto out; | |
2124 | } | |
2125 | } else { | |
2126 | mutex_lock(&sbi->gc_mutex); | |
2127 | } | |
2128 | ||
2129 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); | |
2130 | range.start += sbi->blocks_per_seg; | |
2131 | if (range.start <= end) | |
2132 | goto do_more; | |
2133 | out: | |
2134 | mnt_drop_write_file(filp); | |
2135 | return ret; | |
2136 | } | |
2137 | ||
059c0648 | 2138 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
456b88e4 CY |
2139 | { |
2140 | struct inode *inode = file_inode(filp); | |
2141 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 2142 | int ret; |
456b88e4 CY |
2143 | |
2144 | if (!capable(CAP_SYS_ADMIN)) | |
2145 | return -EPERM; | |
2146 | ||
2147 | if (f2fs_readonly(sbi->sb)) | |
2148 | return -EROFS; | |
2149 | ||
7fb17fe4 CY |
2150 | ret = mnt_want_write_file(filp); |
2151 | if (ret) | |
2152 | return ret; | |
2153 | ||
2154 | ret = f2fs_sync_fs(sbi->sb, 1); | |
2155 | ||
2156 | mnt_drop_write_file(filp); | |
2157 | return ret; | |
456b88e4 CY |
2158 | } |
2159 | ||
d323d005 CY |
2160 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
2161 | struct file *filp, | |
2162 | struct f2fs_defragment *range) | |
2163 | { | |
2164 | struct inode *inode = file_inode(filp); | |
f3d98e74 CY |
2165 | struct f2fs_map_blocks map = { .m_next_extent = NULL, |
2166 | .m_seg_type = NO_CHECK_TYPE }; | |
1061fd48 | 2167 | struct extent_info ei = {0, 0, 0}; |
f3d98e74 | 2168 | pgoff_t pg_start, pg_end, next_pgofs; |
3519e3f9 | 2169 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 2170 | unsigned int total = 0, sec_num; |
d323d005 CY |
2171 | block_t blk_end = 0; |
2172 | bool fragmented = false; | |
2173 | int err; | |
2174 | ||
2175 | /* if in-place-update policy is enabled, don't waste time here */ | |
4d57b86d | 2176 | if (f2fs_should_update_inplace(inode, NULL)) |
d323d005 CY |
2177 | return -EINVAL; |
2178 | ||
09cbfeaf KS |
2179 | pg_start = range->start >> PAGE_SHIFT; |
2180 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 2181 | |
2c4db1a6 | 2182 | f2fs_balance_fs(sbi, true); |
d323d005 | 2183 | |
5955102c | 2184 | inode_lock(inode); |
d323d005 CY |
2185 | |
2186 | /* writeback all dirty pages in the range */ | |
2187 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 2188 | range->start + range->len - 1); |
d323d005 CY |
2189 | if (err) |
2190 | goto out; | |
2191 | ||
2192 | /* | |
2193 | * lookup mapping info in extent cache, skip defragmenting if physical | |
2194 | * block addresses are continuous. | |
2195 | */ | |
2196 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
2197 | if (ei.fofs + ei.len >= pg_end) | |
2198 | goto out; | |
2199 | } | |
2200 | ||
2201 | map.m_lblk = pg_start; | |
f3d98e74 | 2202 | map.m_next_pgofs = &next_pgofs; |
d323d005 CY |
2203 | |
2204 | /* | |
2205 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
2206 | * physical block addresses are continuous even if there are hole(s) | |
2207 | * in logical blocks. | |
2208 | */ | |
2209 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 2210 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2211 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2212 | if (err) |
2213 | goto out; | |
2214 | ||
2215 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2216 | map.m_lblk = next_pgofs; |
d323d005 CY |
2217 | continue; |
2218 | } | |
2219 | ||
25a912e5 | 2220 | if (blk_end && blk_end != map.m_pblk) |
d323d005 | 2221 | fragmented = true; |
25a912e5 CY |
2222 | |
2223 | /* record total count of block that we're going to move */ | |
2224 | total += map.m_len; | |
2225 | ||
d323d005 CY |
2226 | blk_end = map.m_pblk + map.m_len; |
2227 | ||
2228 | map.m_lblk += map.m_len; | |
d323d005 CY |
2229 | } |
2230 | ||
2231 | if (!fragmented) | |
2232 | goto out; | |
2233 | ||
25a912e5 | 2234 | sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
d323d005 CY |
2235 | |
2236 | /* | |
2237 | * make sure there are enough free section for LFS allocation, this can | |
2238 | * avoid defragment running in SSR mode when free section are allocated | |
2239 | * intensively | |
2240 | */ | |
7f3037a5 | 2241 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
2242 | err = -EAGAIN; |
2243 | goto out; | |
2244 | } | |
2245 | ||
25a912e5 CY |
2246 | map.m_lblk = pg_start; |
2247 | map.m_len = pg_end - pg_start; | |
2248 | total = 0; | |
2249 | ||
d323d005 CY |
2250 | while (map.m_lblk < pg_end) { |
2251 | pgoff_t idx; | |
2252 | int cnt = 0; | |
2253 | ||
2254 | do_map: | |
a1c1e9b7 | 2255 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2256 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2257 | if (err) |
2258 | goto clear_out; | |
2259 | ||
2260 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2261 | map.m_lblk = next_pgofs; |
d323d005 CY |
2262 | continue; |
2263 | } | |
2264 | ||
91942321 | 2265 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2266 | |
2267 | idx = map.m_lblk; | |
2268 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2269 | struct page *page; | |
2270 | ||
4d57b86d | 2271 | page = f2fs_get_lock_data_page(inode, idx, true); |
d323d005 CY |
2272 | if (IS_ERR(page)) { |
2273 | err = PTR_ERR(page); | |
2274 | goto clear_out; | |
2275 | } | |
2276 | ||
2277 | set_page_dirty(page); | |
2278 | f2fs_put_page(page, 1); | |
2279 | ||
2280 | idx++; | |
2281 | cnt++; | |
2282 | total++; | |
2283 | } | |
2284 | ||
2285 | map.m_lblk = idx; | |
d323d005 CY |
2286 | |
2287 | if (idx < pg_end && cnt < blk_per_seg) | |
2288 | goto do_map; | |
2289 | ||
91942321 | 2290 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2291 | |
2292 | err = filemap_fdatawrite(inode->i_mapping); | |
2293 | if (err) | |
2294 | goto out; | |
2295 | } | |
2296 | clear_out: | |
91942321 | 2297 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2298 | out: |
5955102c | 2299 | inode_unlock(inode); |
d323d005 | 2300 | if (!err) |
09cbfeaf | 2301 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2302 | return err; |
2303 | } | |
2304 | ||
2305 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2306 | { | |
2307 | struct inode *inode = file_inode(filp); | |
2308 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2309 | struct f2fs_defragment range; | |
2310 | int err; | |
2311 | ||
2312 | if (!capable(CAP_SYS_ADMIN)) | |
2313 | return -EPERM; | |
2314 | ||
7eab0c0d | 2315 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
d323d005 CY |
2316 | return -EINVAL; |
2317 | ||
d7563861 KM |
2318 | if (f2fs_readonly(sbi->sb)) |
2319 | return -EROFS; | |
d323d005 CY |
2320 | |
2321 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
d7563861 KM |
2322 | sizeof(range))) |
2323 | return -EFAULT; | |
d323d005 CY |
2324 | |
2325 | /* verify alignment of offset & size */ | |
d7563861 KM |
2326 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2327 | return -EINVAL; | |
d323d005 | 2328 | |
1941d7bc | 2329 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
d7563861 KM |
2330 | sbi->max_file_blocks)) |
2331 | return -EINVAL; | |
2332 | ||
2333 | err = mnt_want_write_file(filp); | |
2334 | if (err) | |
2335 | return err; | |
1941d7bc | 2336 | |
d323d005 | 2337 | err = f2fs_defragment_range(sbi, filp, &range); |
d7563861 KM |
2338 | mnt_drop_write_file(filp); |
2339 | ||
d0239e1b | 2340 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 | 2341 | if (err < 0) |
d7563861 | 2342 | return err; |
d323d005 CY |
2343 | |
2344 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2345 | sizeof(range))) | |
d7563861 KM |
2346 | return -EFAULT; |
2347 | ||
2348 | return 0; | |
d323d005 CY |
2349 | } |
2350 | ||
4dd6f977 JK |
2351 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2352 | struct file *file_out, loff_t pos_out, size_t len) | |
2353 | { | |
2354 | struct inode *src = file_inode(file_in); | |
2355 | struct inode *dst = file_inode(file_out); | |
2356 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2357 | size_t olen = len, dst_max_i_size = 0; | |
2358 | size_t dst_osize; | |
2359 | int ret; | |
2360 | ||
2361 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2362 | src->i_sb != dst->i_sb) | |
2363 | return -EXDEV; | |
2364 | ||
2365 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2366 | return -EROFS; | |
2367 | ||
fe8494bf CY |
2368 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2369 | return -EINVAL; | |
4dd6f977 JK |
2370 | |
2371 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2372 | return -EOPNOTSUPP; | |
2373 | ||
d95fd91c FL |
2374 | if (src == dst) { |
2375 | if (pos_in == pos_out) | |
2376 | return 0; | |
2377 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2378 | return -EINVAL; | |
2379 | } | |
2380 | ||
4dd6f977 | 2381 | inode_lock(src); |
b2532c69 | 2382 | down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); |
20a3d61d | 2383 | if (src != dst) { |
bb06664a CY |
2384 | ret = -EBUSY; |
2385 | if (!inode_trylock(dst)) | |
2386 | goto out; | |
b2532c69 | 2387 | if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) { |
bb06664a | 2388 | inode_unlock(dst); |
20a3d61d CY |
2389 | goto out; |
2390 | } | |
2391 | } | |
4dd6f977 JK |
2392 | |
2393 | ret = -EINVAL; | |
2394 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2395 | goto out_unlock; | |
2396 | if (len == 0) | |
2397 | olen = len = src->i_size - pos_in; | |
2398 | if (pos_in + len == src->i_size) | |
2399 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2400 | if (len == 0) { | |
2401 | ret = 0; | |
2402 | goto out_unlock; | |
2403 | } | |
2404 | ||
2405 | dst_osize = dst->i_size; | |
2406 | if (pos_out + olen > dst->i_size) | |
2407 | dst_max_i_size = pos_out + olen; | |
2408 | ||
2409 | /* verify the end result is block aligned */ | |
2410 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2411 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2412 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2413 | goto out_unlock; | |
2414 | ||
2415 | ret = f2fs_convert_inline_inode(src); | |
2416 | if (ret) | |
2417 | goto out_unlock; | |
2418 | ||
2419 | ret = f2fs_convert_inline_inode(dst); | |
2420 | if (ret) | |
2421 | goto out_unlock; | |
2422 | ||
2423 | /* write out all dirty pages from offset */ | |
2424 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2425 | pos_in, pos_in + len); | |
2426 | if (ret) | |
2427 | goto out_unlock; | |
2428 | ||
2429 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2430 | pos_out, pos_out + len); | |
2431 | if (ret) | |
2432 | goto out_unlock; | |
2433 | ||
2434 | f2fs_balance_fs(sbi, true); | |
2435 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2436 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2437 | pos_out >> F2FS_BLKSIZE_BITS, | |
2438 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2439 | |
2440 | if (!ret) { | |
2441 | if (dst_max_i_size) | |
2442 | f2fs_i_size_write(dst, dst_max_i_size); | |
2443 | else if (dst_osize != dst->i_size) | |
2444 | f2fs_i_size_write(dst, dst_osize); | |
2445 | } | |
2446 | f2fs_unlock_op(sbi); | |
2447 | out_unlock: | |
bb06664a | 2448 | if (src != dst) { |
b2532c69 | 2449 | up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]); |
4dd6f977 | 2450 | inode_unlock(dst); |
bb06664a | 2451 | } |
20a3d61d | 2452 | out: |
b2532c69 | 2453 | up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); |
4dd6f977 JK |
2454 | inode_unlock(src); |
2455 | return ret; | |
2456 | } | |
2457 | ||
2458 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2459 | { | |
2460 | struct f2fs_move_range range; | |
2461 | struct fd dst; | |
2462 | int err; | |
2463 | ||
2464 | if (!(filp->f_mode & FMODE_READ) || | |
2465 | !(filp->f_mode & FMODE_WRITE)) | |
2466 | return -EBADF; | |
2467 | ||
2468 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2469 | sizeof(range))) | |
2470 | return -EFAULT; | |
2471 | ||
2472 | dst = fdget(range.dst_fd); | |
2473 | if (!dst.file) | |
2474 | return -EBADF; | |
2475 | ||
2476 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2477 | err = -EBADF; | |
2478 | goto err_out; | |
2479 | } | |
2480 | ||
2481 | err = mnt_want_write_file(filp); | |
2482 | if (err) | |
2483 | goto err_out; | |
2484 | ||
2485 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2486 | range.pos_out, range.len); | |
2487 | ||
2488 | mnt_drop_write_file(filp); | |
3cecfa5f KM |
2489 | if (err) |
2490 | goto err_out; | |
4dd6f977 JK |
2491 | |
2492 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2493 | &range, sizeof(range))) | |
2494 | err = -EFAULT; | |
2495 | err_out: | |
2496 | fdput(dst); | |
2497 | return err; | |
2498 | } | |
2499 | ||
e066b83c JK |
2500 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2501 | { | |
2502 | struct inode *inode = file_inode(filp); | |
2503 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2504 | struct sit_info *sm = SIT_I(sbi); | |
2505 | unsigned int start_segno = 0, end_segno = 0; | |
2506 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2507 | struct f2fs_flush_device range; | |
2508 | int ret; | |
2509 | ||
2510 | if (!capable(CAP_SYS_ADMIN)) | |
2511 | return -EPERM; | |
2512 | ||
2513 | if (f2fs_readonly(sbi->sb)) | |
2514 | return -EROFS; | |
2515 | ||
2516 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, | |
2517 | sizeof(range))) | |
2518 | return -EFAULT; | |
2519 | ||
2520 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || | |
2521 | sbi->segs_per_sec != 1) { | |
2522 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2523 | "Can't flush %u in %d for segs_per_sec %u != 1\n", | |
2524 | range.dev_num, sbi->s_ndevs, | |
2525 | sbi->segs_per_sec); | |
2526 | return -EINVAL; | |
2527 | } | |
2528 | ||
2529 | ret = mnt_want_write_file(filp); | |
2530 | if (ret) | |
2531 | return ret; | |
2532 | ||
2533 | if (range.dev_num != 0) | |
2534 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2535 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2536 | ||
2537 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2538 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2539 | start_segno = dev_start_segno; | |
2540 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2541 | ||
2542 | while (start_segno < end_segno) { | |
2543 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2544 | ret = -EBUSY; | |
2545 | goto out; | |
2546 | } | |
2547 | sm->last_victim[GC_CB] = end_segno + 1; | |
2548 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2549 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2550 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2551 | if (ret == -EAGAIN) | |
2552 | ret = 0; | |
2553 | else if (ret < 0) | |
2554 | break; | |
2555 | start_segno++; | |
2556 | } | |
2557 | out: | |
2558 | mnt_drop_write_file(filp); | |
2559 | return ret; | |
2560 | } | |
2561 | ||
e65ef207 JK |
2562 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
2563 | { | |
2564 | struct inode *inode = file_inode(filp); | |
2565 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); | |
2566 | ||
2567 | /* Must validate to set it with SQLite behavior in Android. */ | |
2568 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; | |
2569 | ||
2570 | return put_user(sb_feature, (u32 __user *)arg); | |
2571 | } | |
e066b83c | 2572 | |
2c1d0305 CY |
2573 | #ifdef CONFIG_QUOTA |
2574 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) | |
2575 | { | |
2576 | struct inode *inode = file_inode(filp); | |
2577 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2578 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2579 | struct super_block *sb = sbi->sb; | |
2580 | struct dquot *transfer_to[MAXQUOTAS] = {}; | |
2581 | struct page *ipage; | |
2582 | kprojid_t kprojid; | |
2583 | int err; | |
2584 | ||
2585 | if (!f2fs_sb_has_project_quota(sb)) { | |
2586 | if (projid != F2FS_DEF_PROJID) | |
2587 | return -EOPNOTSUPP; | |
2588 | else | |
2589 | return 0; | |
2590 | } | |
2591 | ||
2592 | if (!f2fs_has_extra_attr(inode)) | |
2593 | return -EOPNOTSUPP; | |
2594 | ||
2595 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); | |
2596 | ||
2597 | if (projid_eq(kprojid, F2FS_I(inode)->i_projid)) | |
2598 | return 0; | |
2599 | ||
2600 | err = mnt_want_write_file(filp); | |
2601 | if (err) | |
2602 | return err; | |
2603 | ||
2604 | err = -EPERM; | |
2605 | inode_lock(inode); | |
2606 | ||
2607 | /* Is it quota file? Do not allow user to mess with it */ | |
2608 | if (IS_NOQUOTA(inode)) | |
2609 | goto out_unlock; | |
2610 | ||
4d57b86d | 2611 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2c1d0305 CY |
2612 | if (IS_ERR(ipage)) { |
2613 | err = PTR_ERR(ipage); | |
2614 | goto out_unlock; | |
2615 | } | |
2616 | ||
2617 | if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize, | |
2618 | i_projid)) { | |
2619 | err = -EOVERFLOW; | |
2620 | f2fs_put_page(ipage, 1); | |
2621 | goto out_unlock; | |
2622 | } | |
2623 | f2fs_put_page(ipage, 1); | |
2624 | ||
c22aecd7 CY |
2625 | err = dquot_initialize(inode); |
2626 | if (err) | |
2627 | goto out_unlock; | |
2c1d0305 CY |
2628 | |
2629 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); | |
2630 | if (!IS_ERR(transfer_to[PRJQUOTA])) { | |
2631 | err = __dquot_transfer(inode, transfer_to); | |
2632 | dqput(transfer_to[PRJQUOTA]); | |
2633 | if (err) | |
2634 | goto out_dirty; | |
2635 | } | |
2636 | ||
2637 | F2FS_I(inode)->i_projid = kprojid; | |
2638 | inode->i_ctime = current_time(inode); | |
2639 | out_dirty: | |
2640 | f2fs_mark_inode_dirty_sync(inode, true); | |
2641 | out_unlock: | |
2642 | inode_unlock(inode); | |
2643 | mnt_drop_write_file(filp); | |
2644 | return err; | |
2645 | } | |
2646 | #else | |
2647 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) | |
2648 | { | |
2649 | if (projid != F2FS_DEF_PROJID) | |
2650 | return -EOPNOTSUPP; | |
2651 | return 0; | |
2652 | } | |
2653 | #endif | |
2654 | ||
2655 | /* Transfer internal flags to xflags */ | |
2656 | static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags) | |
2657 | { | |
2658 | __u32 xflags = 0; | |
2659 | ||
59c84408 | 2660 | if (iflags & F2FS_SYNC_FL) |
2c1d0305 | 2661 | xflags |= FS_XFLAG_SYNC; |
59c84408 | 2662 | if (iflags & F2FS_IMMUTABLE_FL) |
2c1d0305 | 2663 | xflags |= FS_XFLAG_IMMUTABLE; |
59c84408 | 2664 | if (iflags & F2FS_APPEND_FL) |
2c1d0305 | 2665 | xflags |= FS_XFLAG_APPEND; |
59c84408 | 2666 | if (iflags & F2FS_NODUMP_FL) |
2c1d0305 | 2667 | xflags |= FS_XFLAG_NODUMP; |
59c84408 | 2668 | if (iflags & F2FS_NOATIME_FL) |
2c1d0305 | 2669 | xflags |= FS_XFLAG_NOATIME; |
59c84408 | 2670 | if (iflags & F2FS_PROJINHERIT_FL) |
2c1d0305 CY |
2671 | xflags |= FS_XFLAG_PROJINHERIT; |
2672 | return xflags; | |
2673 | } | |
2674 | ||
2675 | #define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ | |
2676 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ | |
2677 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) | |
2678 | ||
2c1d0305 CY |
2679 | /* Transfer xflags flags to internal */ |
2680 | static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags) | |
2681 | { | |
2682 | unsigned long iflags = 0; | |
2683 | ||
2684 | if (xflags & FS_XFLAG_SYNC) | |
59c84408 | 2685 | iflags |= F2FS_SYNC_FL; |
2c1d0305 | 2686 | if (xflags & FS_XFLAG_IMMUTABLE) |
59c84408 | 2687 | iflags |= F2FS_IMMUTABLE_FL; |
2c1d0305 | 2688 | if (xflags & FS_XFLAG_APPEND) |
59c84408 | 2689 | iflags |= F2FS_APPEND_FL; |
2c1d0305 | 2690 | if (xflags & FS_XFLAG_NODUMP) |
59c84408 | 2691 | iflags |= F2FS_NODUMP_FL; |
2c1d0305 | 2692 | if (xflags & FS_XFLAG_NOATIME) |
59c84408 | 2693 | iflags |= F2FS_NOATIME_FL; |
2c1d0305 | 2694 | if (xflags & FS_XFLAG_PROJINHERIT) |
59c84408 | 2695 | iflags |= F2FS_PROJINHERIT_FL; |
2c1d0305 CY |
2696 | |
2697 | return iflags; | |
2698 | } | |
2699 | ||
2700 | static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) | |
2701 | { | |
2702 | struct inode *inode = file_inode(filp); | |
2703 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2704 | struct fsxattr fa; | |
2705 | ||
2706 | memset(&fa, 0, sizeof(struct fsxattr)); | |
2707 | fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags & | |
c807a7cb | 2708 | F2FS_FL_USER_VISIBLE); |
2c1d0305 CY |
2709 | |
2710 | if (f2fs_sb_has_project_quota(inode->i_sb)) | |
2711 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, | |
2712 | fi->i_projid); | |
2713 | ||
2714 | if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) | |
2715 | return -EFAULT; | |
2716 | return 0; | |
2717 | } | |
2718 | ||
2719 | static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) | |
2720 | { | |
2721 | struct inode *inode = file_inode(filp); | |
2722 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2723 | struct fsxattr fa; | |
2724 | unsigned int flags; | |
2725 | int err; | |
2726 | ||
2727 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa))) | |
2728 | return -EFAULT; | |
2729 | ||
2730 | /* Make sure caller has proper permission */ | |
2731 | if (!inode_owner_or_capable(inode)) | |
2732 | return -EACCES; | |
2733 | ||
2734 | if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS) | |
2735 | return -EOPNOTSUPP; | |
2736 | ||
2737 | flags = f2fs_xflags_to_iflags(fa.fsx_xflags); | |
2738 | if (f2fs_mask_flags(inode->i_mode, flags) != flags) | |
2739 | return -EOPNOTSUPP; | |
2740 | ||
2741 | err = mnt_want_write_file(filp); | |
2742 | if (err) | |
2743 | return err; | |
2744 | ||
2745 | inode_lock(inode); | |
2746 | flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) | | |
2747 | (flags & F2FS_FL_XFLAG_VISIBLE); | |
2748 | err = __f2fs_ioc_setflags(inode, flags); | |
2749 | inode_unlock(inode); | |
2750 | mnt_drop_write_file(filp); | |
2751 | if (err) | |
2752 | return err; | |
2753 | ||
2754 | err = f2fs_ioc_setproject(filp, fa.fsx_projid); | |
2755 | if (err) | |
2756 | return err; | |
2757 | ||
2758 | return 0; | |
2759 | } | |
e066b83c | 2760 | |
1ad71a27 JK |
2761 | int f2fs_pin_file_control(struct inode *inode, bool inc) |
2762 | { | |
2763 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2764 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2765 | ||
2766 | /* Use i_gc_failures for normal file as a risk signal. */ | |
2767 | if (inc) | |
2ef79ecb CY |
2768 | f2fs_i_gc_failures_write(inode, |
2769 | fi->i_gc_failures[GC_FAILURE_PIN] + 1); | |
1ad71a27 | 2770 | |
2ef79ecb | 2771 | if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) { |
1ad71a27 JK |
2772 | f2fs_msg(sbi->sb, KERN_WARNING, |
2773 | "%s: Enable GC = ino %lx after %x GC trials\n", | |
2ef79ecb CY |
2774 | __func__, inode->i_ino, |
2775 | fi->i_gc_failures[GC_FAILURE_PIN]); | |
1ad71a27 JK |
2776 | clear_inode_flag(inode, FI_PIN_FILE); |
2777 | return -EAGAIN; | |
2778 | } | |
2779 | return 0; | |
2780 | } | |
2781 | ||
2782 | static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg) | |
2783 | { | |
2784 | struct inode *inode = file_inode(filp); | |
2785 | __u32 pin; | |
2786 | int ret = 0; | |
2787 | ||
2788 | if (!inode_owner_or_capable(inode)) | |
2789 | return -EACCES; | |
2790 | ||
2791 | if (get_user(pin, (__u32 __user *)arg)) | |
2792 | return -EFAULT; | |
2793 | ||
2794 | if (!S_ISREG(inode->i_mode)) | |
2795 | return -EINVAL; | |
2796 | ||
2797 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
2798 | return -EROFS; | |
2799 | ||
2800 | ret = mnt_want_write_file(filp); | |
2801 | if (ret) | |
2802 | return ret; | |
2803 | ||
2804 | inode_lock(inode); | |
2805 | ||
4d57b86d | 2806 | if (f2fs_should_update_outplace(inode, NULL)) { |
bb9e3bb8 CY |
2807 | ret = -EINVAL; |
2808 | goto out; | |
2809 | } | |
2810 | ||
1ad71a27 JK |
2811 | if (!pin) { |
2812 | clear_inode_flag(inode, FI_PIN_FILE); | |
30933364 | 2813 | f2fs_i_gc_failures_write(inode, 0); |
1ad71a27 JK |
2814 | goto done; |
2815 | } | |
2816 | ||
2817 | if (f2fs_pin_file_control(inode, false)) { | |
2818 | ret = -EAGAIN; | |
2819 | goto out; | |
2820 | } | |
2821 | ret = f2fs_convert_inline_inode(inode); | |
2822 | if (ret) | |
2823 | goto out; | |
2824 | ||
2825 | set_inode_flag(inode, FI_PIN_FILE); | |
2ef79ecb | 2826 | ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
1ad71a27 JK |
2827 | done: |
2828 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
2829 | out: | |
2830 | inode_unlock(inode); | |
2831 | mnt_drop_write_file(filp); | |
2832 | return ret; | |
2833 | } | |
2834 | ||
2835 | static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg) | |
2836 | { | |
2837 | struct inode *inode = file_inode(filp); | |
2838 | __u32 pin = 0; | |
2839 | ||
2840 | if (is_inode_flag_set(inode, FI_PIN_FILE)) | |
2ef79ecb | 2841 | pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
1ad71a27 JK |
2842 | return put_user(pin, (u32 __user *)arg); |
2843 | } | |
2844 | ||
c4020b2d CY |
2845 | int f2fs_precache_extents(struct inode *inode) |
2846 | { | |
2847 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2848 | struct f2fs_map_blocks map; | |
2849 | pgoff_t m_next_extent; | |
2850 | loff_t end; | |
2851 | int err; | |
2852 | ||
2853 | if (is_inode_flag_set(inode, FI_NO_EXTENT)) | |
2854 | return -EOPNOTSUPP; | |
2855 | ||
2856 | map.m_lblk = 0; | |
2857 | map.m_next_pgofs = NULL; | |
2858 | map.m_next_extent = &m_next_extent; | |
2859 | map.m_seg_type = NO_CHECK_TYPE; | |
2860 | end = F2FS_I_SB(inode)->max_file_blocks; | |
2861 | ||
2862 | while (map.m_lblk < end) { | |
2863 | map.m_len = end - map.m_lblk; | |
2864 | ||
b2532c69 | 2865 | down_write(&fi->i_gc_rwsem[WRITE]); |
c4020b2d | 2866 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); |
b2532c69 | 2867 | up_write(&fi->i_gc_rwsem[WRITE]); |
c4020b2d CY |
2868 | if (err) |
2869 | return err; | |
2870 | ||
2871 | map.m_lblk = m_next_extent; | |
2872 | } | |
2873 | ||
2874 | return err; | |
2875 | } | |
2876 | ||
2877 | static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg) | |
2878 | { | |
2879 | return f2fs_precache_extents(file_inode(filp)); | |
2880 | } | |
2881 | ||
52656e6c JK |
2882 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2883 | { | |
1f227a3e JK |
2884 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp))))) |
2885 | return -EIO; | |
2886 | ||
52656e6c JK |
2887 | switch (cmd) { |
2888 | case F2FS_IOC_GETFLAGS: | |
2889 | return f2fs_ioc_getflags(filp, arg); | |
2890 | case F2FS_IOC_SETFLAGS: | |
2891 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2892 | case F2FS_IOC_GETVERSION: |
2893 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2894 | case F2FS_IOC_START_ATOMIC_WRITE: |
2895 | return f2fs_ioc_start_atomic_write(filp); | |
2896 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2897 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2898 | case F2FS_IOC_START_VOLATILE_WRITE: |
2899 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2900 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2901 | return f2fs_ioc_release_volatile_write(filp); | |
2902 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2903 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2904 | case F2FS_IOC_SHUTDOWN: |
2905 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2906 | case FITRIM: |
2907 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2908 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2909 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2910 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2911 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2912 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2913 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2914 | case F2FS_IOC_GARBAGE_COLLECT: |
2915 | return f2fs_ioc_gc(filp, arg); | |
34dc77ad JK |
2916 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
2917 | return f2fs_ioc_gc_range(filp, arg); | |
456b88e4 | 2918 | case F2FS_IOC_WRITE_CHECKPOINT: |
059c0648 | 2919 | return f2fs_ioc_write_checkpoint(filp, arg); |
d323d005 CY |
2920 | case F2FS_IOC_DEFRAGMENT: |
2921 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2922 | case F2FS_IOC_MOVE_RANGE: |
2923 | return f2fs_ioc_move_range(filp, arg); | |
e066b83c JK |
2924 | case F2FS_IOC_FLUSH_DEVICE: |
2925 | return f2fs_ioc_flush_device(filp, arg); | |
e65ef207 JK |
2926 | case F2FS_IOC_GET_FEATURES: |
2927 | return f2fs_ioc_get_features(filp, arg); | |
2c1d0305 CY |
2928 | case F2FS_IOC_FSGETXATTR: |
2929 | return f2fs_ioc_fsgetxattr(filp, arg); | |
2930 | case F2FS_IOC_FSSETXATTR: | |
2931 | return f2fs_ioc_fssetxattr(filp, arg); | |
1ad71a27 JK |
2932 | case F2FS_IOC_GET_PIN_FILE: |
2933 | return f2fs_ioc_get_pin_file(filp, arg); | |
2934 | case F2FS_IOC_SET_PIN_FILE: | |
2935 | return f2fs_ioc_set_pin_file(filp, arg); | |
c4020b2d CY |
2936 | case F2FS_IOC_PRECACHE_EXTENTS: |
2937 | return f2fs_ioc_precache_extents(filp, arg); | |
fbfa2cc5 JK |
2938 | default: |
2939 | return -ENOTTY; | |
2940 | } | |
2941 | } | |
2942 | ||
fcc85a4d JK |
2943 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2944 | { | |
b439b103 JK |
2945 | struct file *file = iocb->ki_filp; |
2946 | struct inode *inode = file_inode(file); | |
2947 | ssize_t ret; | |
fcc85a4d | 2948 | |
1f227a3e JK |
2949 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
2950 | return -EIO; | |
2951 | ||
b91050a8 HL |
2952 | if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT)) |
2953 | return -EINVAL; | |
2954 | ||
2955 | if (!inode_trylock(inode)) { | |
2956 | if (iocb->ki_flags & IOCB_NOWAIT) | |
2957 | return -EAGAIN; | |
2958 | inode_lock(inode); | |
2959 | } | |
2960 | ||
b439b103 JK |
2961 | ret = generic_write_checks(iocb, from); |
2962 | if (ret > 0) { | |
dc7a10dd JK |
2963 | bool preallocated = false; |
2964 | size_t target_size = 0; | |
dc91de78 | 2965 | int err; |
a7de6086 | 2966 | |
dc91de78 JK |
2967 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
2968 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 2969 | |
b91050a8 HL |
2970 | if ((iocb->ki_flags & IOCB_NOWAIT) && |
2971 | (iocb->ki_flags & IOCB_DIRECT)) { | |
2972 | if (!f2fs_overwrite_io(inode, iocb->ki_pos, | |
2973 | iov_iter_count(from)) || | |
2974 | f2fs_has_inline_data(inode) || | |
2975 | f2fs_force_buffered_io(inode, WRITE)) { | |
cba41be0 YH |
2976 | clear_inode_flag(inode, |
2977 | FI_NO_PREALLOC); | |
b91050a8 HL |
2978 | inode_unlock(inode); |
2979 | return -EAGAIN; | |
2980 | } | |
2981 | ||
2982 | } else { | |
dc7a10dd JK |
2983 | preallocated = true; |
2984 | target_size = iocb->ki_pos + iov_iter_count(from); | |
2985 | ||
b91050a8 HL |
2986 | err = f2fs_preallocate_blocks(iocb, from); |
2987 | if (err) { | |
2988 | clear_inode_flag(inode, FI_NO_PREALLOC); | |
2989 | inode_unlock(inode); | |
2990 | return err; | |
2991 | } | |
9dfa1baf | 2992 | } |
a7de6086 | 2993 | ret = __generic_file_write_iter(iocb, from); |
dc91de78 | 2994 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b0af6d49 | 2995 | |
dc7a10dd JK |
2996 | /* if we couldn't write data, we should deallocate blocks. */ |
2997 | if (preallocated && i_size_read(inode) < target_size) | |
2998 | f2fs_truncate(inode); | |
2999 | ||
b0af6d49 CY |
3000 | if (ret > 0) |
3001 | f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); | |
b439b103 JK |
3002 | } |
3003 | inode_unlock(inode); | |
3004 | ||
e2592217 CH |
3005 | if (ret > 0) |
3006 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 3007 | return ret; |
fcc85a4d JK |
3008 | } |
3009 | ||
e9750824 NJ |
3010 | #ifdef CONFIG_COMPAT |
3011 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
3012 | { | |
3013 | switch (cmd) { | |
3014 | case F2FS_IOC32_GETFLAGS: | |
3015 | cmd = F2FS_IOC_GETFLAGS; | |
3016 | break; | |
3017 | case F2FS_IOC32_SETFLAGS: | |
3018 | cmd = F2FS_IOC_SETFLAGS; | |
3019 | break; | |
04ef4b62 CY |
3020 | case F2FS_IOC32_GETVERSION: |
3021 | cmd = F2FS_IOC_GETVERSION; | |
3022 | break; | |
3023 | case F2FS_IOC_START_ATOMIC_WRITE: | |
3024 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
3025 | case F2FS_IOC_START_VOLATILE_WRITE: | |
3026 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
3027 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
3028 | case F2FS_IOC_SHUTDOWN: | |
3029 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
3030 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
3031 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
3032 | case F2FS_IOC_GARBAGE_COLLECT: | |
34dc77ad | 3033 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
04ef4b62 CY |
3034 | case F2FS_IOC_WRITE_CHECKPOINT: |
3035 | case F2FS_IOC_DEFRAGMENT: | |
4dd6f977 | 3036 | case F2FS_IOC_MOVE_RANGE: |
e066b83c | 3037 | case F2FS_IOC_FLUSH_DEVICE: |
e65ef207 | 3038 | case F2FS_IOC_GET_FEATURES: |
2c1d0305 CY |
3039 | case F2FS_IOC_FSGETXATTR: |
3040 | case F2FS_IOC_FSSETXATTR: | |
1ad71a27 JK |
3041 | case F2FS_IOC_GET_PIN_FILE: |
3042 | case F2FS_IOC_SET_PIN_FILE: | |
c4020b2d | 3043 | case F2FS_IOC_PRECACHE_EXTENTS: |
4dd6f977 | 3044 | break; |
e9750824 NJ |
3045 | default: |
3046 | return -ENOIOCTLCMD; | |
3047 | } | |
3048 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
3049 | } | |
3050 | #endif | |
3051 | ||
fbfa2cc5 | 3052 | const struct file_operations f2fs_file_operations = { |
267378d4 | 3053 | .llseek = f2fs_llseek, |
aad4f8bb | 3054 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
3055 | .write_iter = f2fs_file_write_iter, |
3056 | .open = f2fs_file_open, | |
12662234 | 3057 | .release = f2fs_release_file, |
fbfa2cc5 | 3058 | .mmap = f2fs_file_mmap, |
7a10f017 | 3059 | .flush = f2fs_file_flush, |
fbfa2cc5 JK |
3060 | .fsync = f2fs_sync_file, |
3061 | .fallocate = f2fs_fallocate, | |
3062 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
3063 | #ifdef CONFIG_COMPAT |
3064 | .compat_ioctl = f2fs_compat_ioctl, | |
3065 | #endif | |
fbfa2cc5 | 3066 | .splice_read = generic_file_splice_read, |
8d020765 | 3067 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 3068 | }; |