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Commit | Line | Data |
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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 | }; | |
216 | ||
6bacf52f | 217 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
218 | return 0; |
219 | ||
a2a4a7e4 | 220 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
221 | |
222 | /* if fdatasync is triggered, let's do in-place-update */ | |
c46a155b | 223 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
91942321 | 224 | set_inode_flag(inode, FI_NEED_IPU); |
3b49c9a1 | 225 | ret = file_write_and_wait_range(file, start, end); |
91942321 | 226 | clear_inode_flag(inode, FI_NEED_IPU); |
c1ce1b02 | 227 | |
a2a4a7e4 | 228 | if (ret) { |
a5fd5050 | 229 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
fbfa2cc5 | 230 | return ret; |
a2a4a7e4 | 231 | } |
fbfa2cc5 | 232 | |
9c7bb702 | 233 | /* if the inode is dirty, let's recover all the time */ |
281518c6 | 234 | if (!f2fs_skip_inode_update(inode, datasync)) { |
2286c020 | 235 | f2fs_write_inode(inode, NULL); |
9c7bb702 CL |
236 | goto go_write; |
237 | } | |
238 | ||
6d99ba41 JK |
239 | /* |
240 | * if there is no written data, don't waste time to write recovery info. | |
241 | */ | |
91942321 | 242 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
4d57b86d | 243 | !f2fs_exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 244 | |
9c7bb702 CL |
245 | /* it may call write_inode just prior to fsync */ |
246 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 247 | goto go_write; |
19c9c466 | 248 | |
91942321 | 249 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
4d57b86d | 250 | f2fs_exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
251 | goto flush_out; |
252 | goto out; | |
253 | } | |
19c9c466 | 254 | go_write: |
e5d2385e JK |
255 | /* |
256 | * Both of fdatasync() and fsync() are able to be recovered from | |
257 | * sudden-power-off. | |
258 | */ | |
91942321 | 259 | down_read(&F2FS_I(inode)->i_sem); |
a5fd5050 | 260 | cp_reason = need_do_checkpoint(inode); |
91942321 | 261 | up_read(&F2FS_I(inode)->i_sem); |
d928bfbf | 262 | |
a5fd5050 | 263 | if (cp_reason) { |
fbfa2cc5 JK |
264 | /* all the dirty node pages should be flushed for POR */ |
265 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 266 | |
51455b19 CL |
267 | /* |
268 | * We've secured consistency through sync_fs. Following pino | |
269 | * will be used only for fsynced inodes after checkpoint. | |
270 | */ | |
271 | try_to_fix_pino(inode); | |
91942321 JK |
272 | clear_inode_flag(inode, FI_APPEND_WRITE); |
273 | clear_inode_flag(inode, FI_UPDATE_WRITE); | |
51455b19 CL |
274 | goto out; |
275 | } | |
88bd02c9 | 276 | sync_nodes: |
c29fd0c0 | 277 | atomic_inc(&sbi->wb_sync_req[NODE]); |
4d57b86d | 278 | ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic); |
c29fd0c0 | 279 | atomic_dec(&sbi->wb_sync_req[NODE]); |
c267ec15 JK |
280 | if (ret) |
281 | goto out; | |
51455b19 | 282 | |
871f599f | 283 | /* if cp_error was enabled, we should avoid infinite loop */ |
6d5a1495 CY |
284 | if (unlikely(f2fs_cp_error(sbi))) { |
285 | ret = -EIO; | |
871f599f | 286 | goto out; |
6d5a1495 | 287 | } |
871f599f | 288 | |
4d57b86d | 289 | if (f2fs_need_inode_block_update(sbi, ino)) { |
7c45729a | 290 | f2fs_mark_inode_dirty_sync(inode, true); |
51455b19 CL |
291 | f2fs_write_inode(inode, NULL); |
292 | goto sync_nodes; | |
fbfa2cc5 | 293 | } |
51455b19 | 294 | |
b6a245eb JK |
295 | /* |
296 | * If it's atomic_write, it's just fine to keep write ordering. So | |
297 | * here we don't need to wait for node write completion, since we use | |
298 | * node chain which serializes node blocks. If one of node writes are | |
299 | * reordered, we can see simply broken chain, resulting in stopping | |
300 | * roll-forward recovery. It means we'll recover all or none node blocks | |
301 | * given fsync mark. | |
302 | */ | |
303 | if (!atomic) { | |
4d57b86d | 304 | ret = f2fs_wait_on_node_pages_writeback(sbi, ino); |
b6a245eb JK |
305 | if (ret) |
306 | goto out; | |
307 | } | |
51455b19 CL |
308 | |
309 | /* once recovery info is written, don't need to tack this */ | |
4d57b86d | 310 | f2fs_remove_ino_entry(sbi, ino, APPEND_INO); |
91942321 | 311 | clear_inode_flag(inode, FI_APPEND_WRITE); |
51455b19 | 312 | flush_out: |
d6290814 | 313 | if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) |
39d787be | 314 | ret = f2fs_issue_flush(sbi, inode->i_ino); |
3f06252f | 315 | if (!ret) { |
4d57b86d | 316 | f2fs_remove_ino_entry(sbi, ino, UPDATE_INO); |
3f06252f | 317 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
4d57b86d | 318 | f2fs_remove_ino_entry(sbi, ino, FLUSH_INO); |
3f06252f | 319 | } |
d0239e1b | 320 | f2fs_update_time(sbi, REQ_TIME); |
fbfa2cc5 | 321 | out: |
a5fd5050 | 322 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
05ca3632 | 323 | f2fs_trace_ios(NULL, 1); |
fbfa2cc5 JK |
324 | return ret; |
325 | } | |
326 | ||
608514de JK |
327 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
328 | { | |
1f227a3e JK |
329 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file))))) |
330 | return -EIO; | |
608514de JK |
331 | return f2fs_do_sync_file(file, start, end, datasync, false); |
332 | } | |
333 | ||
7f7670fe JK |
334 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
335 | pgoff_t pgofs, int whence) | |
336 | { | |
8faab642 | 337 | struct page *page; |
7f7670fe JK |
338 | int nr_pages; |
339 | ||
340 | if (whence != SEEK_DATA) | |
341 | return 0; | |
342 | ||
343 | /* find first dirty page index */ | |
8faab642 JK |
344 | nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY, |
345 | 1, &page); | |
346 | if (!nr_pages) | |
347 | return ULONG_MAX; | |
348 | pgofs = page->index; | |
349 | put_page(page); | |
7f7670fe JK |
350 | return pgofs; |
351 | } | |
352 | ||
353 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
354 | int whence) | |
355 | { | |
356 | switch (whence) { | |
357 | case SEEK_DATA: | |
358 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
7b525dd0 | 359 | is_valid_blkaddr(blkaddr)) |
7f7670fe JK |
360 | return true; |
361 | break; | |
362 | case SEEK_HOLE: | |
363 | if (blkaddr == NULL_ADDR) | |
364 | return true; | |
365 | break; | |
366 | } | |
367 | return false; | |
368 | } | |
369 | ||
267378d4 CY |
370 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
371 | { | |
372 | struct inode *inode = file->f_mapping->host; | |
373 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
374 | struct dnode_of_data dn; | |
7f7670fe JK |
375 | pgoff_t pgofs, end_offset, dirty; |
376 | loff_t data_ofs = offset; | |
377 | loff_t isize; | |
267378d4 CY |
378 | int err = 0; |
379 | ||
5955102c | 380 | inode_lock(inode); |
267378d4 CY |
381 | |
382 | isize = i_size_read(inode); | |
383 | if (offset >= isize) | |
384 | goto fail; | |
385 | ||
386 | /* handle inline data case */ | |
622f28ae | 387 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
388 | if (whence == SEEK_HOLE) |
389 | data_ofs = isize; | |
390 | goto found; | |
391 | } | |
392 | ||
09cbfeaf | 393 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
267378d4 | 394 | |
7f7670fe JK |
395 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
396 | ||
09cbfeaf | 397 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 398 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 399 | err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
267378d4 CY |
400 | if (err && err != -ENOENT) { |
401 | goto fail; | |
402 | } else if (err == -ENOENT) { | |
e1c42045 | 403 | /* direct node does not exists */ |
267378d4 | 404 | if (whence == SEEK_DATA) { |
4d57b86d | 405 | pgofs = f2fs_get_next_page_offset(&dn, pgofs); |
267378d4 CY |
406 | continue; |
407 | } else { | |
408 | goto found; | |
409 | } | |
410 | } | |
411 | ||
81ca7350 | 412 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
267378d4 CY |
413 | |
414 | /* find data/hole in dnode block */ | |
415 | for (; dn.ofs_in_node < end_offset; | |
416 | dn.ofs_in_node++, pgofs++, | |
09cbfeaf | 417 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
267378d4 | 418 | block_t blkaddr; |
f11e98bd | 419 | |
7a2af766 CY |
420 | blkaddr = datablock_addr(dn.inode, |
421 | dn.node_page, dn.ofs_in_node); | |
267378d4 | 422 | |
7f7670fe | 423 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
424 | f2fs_put_dnode(&dn); |
425 | goto found; | |
426 | } | |
427 | } | |
428 | f2fs_put_dnode(&dn); | |
429 | } | |
430 | ||
431 | if (whence == SEEK_DATA) | |
432 | goto fail; | |
267378d4 | 433 | found: |
fe369bc8 JK |
434 | if (whence == SEEK_HOLE && data_ofs > isize) |
435 | data_ofs = isize; | |
5955102c | 436 | inode_unlock(inode); |
267378d4 CY |
437 | return vfs_setpos(file, data_ofs, maxbytes); |
438 | fail: | |
5955102c | 439 | inode_unlock(inode); |
267378d4 CY |
440 | return -ENXIO; |
441 | } | |
442 | ||
443 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
444 | { | |
445 | struct inode *inode = file->f_mapping->host; | |
446 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
447 | ||
448 | switch (whence) { | |
449 | case SEEK_SET: | |
450 | case SEEK_CUR: | |
451 | case SEEK_END: | |
452 | return generic_file_llseek_size(file, offset, whence, | |
453 | maxbytes, i_size_read(inode)); | |
454 | case SEEK_DATA: | |
455 | case SEEK_HOLE: | |
0b4c5afd JK |
456 | if (offset < 0) |
457 | return -ENXIO; | |
267378d4 CY |
458 | return f2fs_seek_block(file, offset, whence); |
459 | } | |
460 | ||
461 | return -EINVAL; | |
462 | } | |
463 | ||
fbfa2cc5 JK |
464 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
465 | { | |
b3d208f9 | 466 | struct inode *inode = file_inode(file); |
b9d777b8 | 467 | int err; |
b3d208f9 | 468 | |
1f227a3e JK |
469 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
470 | return -EIO; | |
471 | ||
b3d208f9 | 472 | /* we don't need to use inline_data strictly */ |
b9d777b8 JK |
473 | err = f2fs_convert_inline_inode(inode); |
474 | if (err) | |
475 | return err; | |
b3d208f9 | 476 | |
fbfa2cc5 JK |
477 | file_accessed(file); |
478 | vma->vm_ops = &f2fs_file_vm_ops; | |
479 | return 0; | |
480 | } | |
481 | ||
fcc85a4d JK |
482 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
483 | { | |
2e168c82 | 484 | int err = fscrypt_file_open(inode, filp); |
fcc85a4d | 485 | |
2e168c82 EB |
486 | if (err) |
487 | return err; | |
b91050a8 HL |
488 | |
489 | filp->f_mode |= FMODE_NOWAIT; | |
490 | ||
0abd675e | 491 | return dquot_file_open(inode, filp); |
fcc85a4d JK |
492 | } |
493 | ||
4d57b86d | 494 | void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 | 495 | { |
4081363f | 496 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 | 497 | struct f2fs_node *raw_node; |
19b2c30d | 498 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
fbfa2cc5 | 499 | __le32 *addr; |
7a2af766 CY |
500 | int base = 0; |
501 | ||
502 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
503 | base = get_extra_isize(dn->inode); | |
fbfa2cc5 | 504 | |
45590710 | 505 | raw_node = F2FS_NODE(dn->node_page); |
7a2af766 | 506 | addr = blkaddr_in_node(raw_node) + base + ofs; |
fbfa2cc5 | 507 | |
6c311ec6 | 508 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 | 509 | block_t blkaddr = le32_to_cpu(*addr); |
f11e98bd | 510 | |
fbfa2cc5 JK |
511 | if (blkaddr == NULL_ADDR) |
512 | continue; | |
513 | ||
e1509cf2 | 514 | dn->data_blkaddr = NULL_ADDR; |
4d57b86d CY |
515 | f2fs_set_data_blkaddr(dn); |
516 | f2fs_invalidate_blocks(sbi, blkaddr); | |
3c6c2beb | 517 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
91942321 | 518 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
fbfa2cc5 JK |
519 | nr_free++; |
520 | } | |
19b2c30d | 521 | |
fbfa2cc5 | 522 | if (nr_free) { |
19b2c30d CY |
523 | pgoff_t fofs; |
524 | /* | |
525 | * once we invalidate valid blkaddr in range [ofs, ofs + count], | |
526 | * we will invalidate all blkaddr in the whole range. | |
527 | */ | |
4d57b86d | 528 | fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), |
81ca7350 | 529 | dn->inode) + ofs; |
19b2c30d | 530 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
d7cc950b | 531 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
532 | } |
533 | dn->ofs_in_node = ofs; | |
51dd6249 | 534 | |
d0239e1b | 535 | f2fs_update_time(sbi, REQ_TIME); |
51dd6249 NJ |
536 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
537 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
538 | } |
539 | ||
4d57b86d | 540 | void f2fs_truncate_data_blocks(struct dnode_of_data *dn) |
fbfa2cc5 | 541 | { |
4d57b86d | 542 | f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
fbfa2cc5 JK |
543 | } |
544 | ||
0bfcfcca | 545 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
43f3eae1 | 546 | bool cache_only) |
fbfa2cc5 | 547 | { |
193bea1d | 548 | loff_t offset = from & (PAGE_SIZE - 1); |
09cbfeaf | 549 | pgoff_t index = from >> PAGE_SHIFT; |
43f3eae1 | 550 | struct address_space *mapping = inode->i_mapping; |
fbfa2cc5 JK |
551 | struct page *page; |
552 | ||
43f3eae1 | 553 | if (!offset && !cache_only) |
b3d208f9 | 554 | return 0; |
fbfa2cc5 | 555 | |
43f3eae1 | 556 | if (cache_only) { |
34b5d5c2 | 557 | page = find_lock_page(mapping, index); |
43f3eae1 JK |
558 | if (page && PageUptodate(page)) |
559 | goto truncate_out; | |
560 | f2fs_put_page(page, 1); | |
b3d208f9 | 561 | return 0; |
43f3eae1 | 562 | } |
fbfa2cc5 | 563 | |
4d57b86d | 564 | page = f2fs_get_lock_data_page(inode, index, true); |
43f3eae1 | 565 | if (IS_ERR(page)) |
a78aaa2c | 566 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
43f3eae1 | 567 | truncate_out: |
fec1d657 | 568 | f2fs_wait_on_page_writeback(page, DATA, true); |
09cbfeaf | 569 | zero_user(page, offset, PAGE_SIZE - offset); |
a9bcf9bc JK |
570 | |
571 | /* An encrypted inode should have a key and truncate the last page. */ | |
572 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); | |
573 | if (!cache_only) | |
0bfcfcca | 574 | set_page_dirty(page); |
fbfa2cc5 | 575 | f2fs_put_page(page, 1); |
b3d208f9 | 576 | return 0; |
fbfa2cc5 JK |
577 | } |
578 | ||
4d57b86d | 579 | int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 580 | { |
4081363f | 581 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
582 | struct dnode_of_data dn; |
583 | pgoff_t free_from; | |
9ffe0fb5 | 584 | int count = 0, err = 0; |
b3d208f9 | 585 | struct page *ipage; |
0bfcfcca | 586 | bool truncate_page = false; |
fbfa2cc5 | 587 | |
51dd6249 NJ |
588 | trace_f2fs_truncate_blocks_enter(inode, from); |
589 | ||
df033caf | 590 | free_from = (pgoff_t)F2FS_BLK_ALIGN(from); |
fbfa2cc5 | 591 | |
09210c97 CY |
592 | if (free_from >= sbi->max_file_blocks) |
593 | goto free_partial; | |
594 | ||
764aa3e9 JK |
595 | if (lock) |
596 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 597 | |
4d57b86d | 598 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
b3d208f9 JK |
599 | if (IS_ERR(ipage)) { |
600 | err = PTR_ERR(ipage); | |
601 | goto out; | |
602 | } | |
603 | ||
604 | if (f2fs_has_inline_data(inode)) { | |
4d57b86d | 605 | f2fs_truncate_inline_inode(inode, ipage, from); |
b3d208f9 | 606 | f2fs_put_page(ipage, 1); |
0bfcfcca | 607 | truncate_page = true; |
b3d208f9 JK |
608 | goto out; |
609 | } | |
610 | ||
611 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
4d57b86d | 612 | err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
fbfa2cc5 JK |
613 | if (err) { |
614 | if (err == -ENOENT) | |
615 | goto free_next; | |
b3d208f9 | 616 | goto out; |
1ce86bf6 JK |
617 | } |
618 | ||
81ca7350 | 619 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
fbfa2cc5 JK |
620 | |
621 | count -= dn.ofs_in_node; | |
9850cf4a | 622 | f2fs_bug_on(sbi, count < 0); |
39936837 | 623 | |
fbfa2cc5 | 624 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
4d57b86d | 625 | f2fs_truncate_data_blocks_range(&dn, count); |
fbfa2cc5 JK |
626 | free_from += count; |
627 | } | |
628 | ||
629 | f2fs_put_dnode(&dn); | |
630 | free_next: | |
4d57b86d | 631 | err = f2fs_truncate_inode_blocks(inode, free_from); |
764d2c80 JK |
632 | out: |
633 | if (lock) | |
634 | f2fs_unlock_op(sbi); | |
09210c97 | 635 | free_partial: |
b3d208f9 JK |
636 | /* lastly zero out the first data page */ |
637 | if (!err) | |
0bfcfcca | 638 | err = truncate_partial_data_page(inode, from, truncate_page); |
fbfa2cc5 | 639 | |
51dd6249 | 640 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
641 | return err; |
642 | } | |
643 | ||
9a449e9c | 644 | int f2fs_truncate(struct inode *inode) |
fbfa2cc5 | 645 | { |
b0154891 CY |
646 | int err; |
647 | ||
1f227a3e JK |
648 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
649 | return -EIO; | |
650 | ||
fbfa2cc5 JK |
651 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
652 | S_ISLNK(inode->i_mode))) | |
b0154891 | 653 | return 0; |
fbfa2cc5 | 654 | |
51dd6249 NJ |
655 | trace_f2fs_truncate(inode); |
656 | ||
14b44d23 JK |
657 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
658 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { | |
659 | f2fs_show_injection_info(FAULT_TRUNCATE); | |
660 | return -EIO; | |
661 | } | |
662 | #endif | |
92dffd01 | 663 | /* we should check inline_data size */ |
b9d777b8 | 664 | if (!f2fs_may_inline_data(inode)) { |
b0154891 CY |
665 | err = f2fs_convert_inline_inode(inode); |
666 | if (err) | |
667 | return err; | |
92dffd01 JK |
668 | } |
669 | ||
4d57b86d | 670 | err = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
b0154891 CY |
671 | if (err) |
672 | return err; | |
673 | ||
078cd827 | 674 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 675 | f2fs_mark_inode_dirty_sync(inode, false); |
b0154891 | 676 | return 0; |
fbfa2cc5 JK |
677 | } |
678 | ||
a528d35e | 679 | int f2fs_getattr(const struct path *path, struct kstat *stat, |
1c6d8ee4 | 680 | u32 request_mask, unsigned int query_flags) |
fbfa2cc5 | 681 | { |
a528d35e | 682 | struct inode *inode = d_inode(path->dentry); |
1c6d8ee4 | 683 | struct f2fs_inode_info *fi = F2FS_I(inode); |
1c1d35df | 684 | struct f2fs_inode *ri; |
1c6d8ee4 CY |
685 | unsigned int flags; |
686 | ||
1c1d35df CY |
687 | if (f2fs_has_extra_attr(inode) && |
688 | f2fs_sb_has_inode_crtime(inode->i_sb) && | |
689 | F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { | |
690 | stat->result_mask |= STATX_BTIME; | |
691 | stat->btime.tv_sec = fi->i_crtime.tv_sec; | |
692 | stat->btime.tv_nsec = fi->i_crtime.tv_nsec; | |
693 | } | |
694 | ||
c807a7cb | 695 | flags = fi->i_flags & F2FS_FL_USER_VISIBLE; |
59c84408 | 696 | if (flags & F2FS_APPEND_FL) |
1c6d8ee4 | 697 | stat->attributes |= STATX_ATTR_APPEND; |
59c84408 | 698 | if (flags & F2FS_COMPR_FL) |
1c6d8ee4 CY |
699 | stat->attributes |= STATX_ATTR_COMPRESSED; |
700 | if (f2fs_encrypted_inode(inode)) | |
701 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
59c84408 | 702 | if (flags & F2FS_IMMUTABLE_FL) |
1c6d8ee4 | 703 | stat->attributes |= STATX_ATTR_IMMUTABLE; |
59c84408 | 704 | if (flags & F2FS_NODUMP_FL) |
1c6d8ee4 CY |
705 | stat->attributes |= STATX_ATTR_NODUMP; |
706 | ||
707 | stat->attributes_mask |= (STATX_ATTR_APPEND | | |
708 | STATX_ATTR_COMPRESSED | | |
709 | STATX_ATTR_ENCRYPTED | | |
710 | STATX_ATTR_IMMUTABLE | | |
711 | STATX_ATTR_NODUMP); | |
712 | ||
fbfa2cc5 | 713 | generic_fillattr(inode, stat); |
5b4267d1 JK |
714 | |
715 | /* we need to show initial sectors used for inline_data/dentries */ | |
716 | if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || | |
717 | f2fs_has_inline_dentry(inode)) | |
718 | stat->blocks += (stat->size + 511) >> 9; | |
719 | ||
fbfa2cc5 JK |
720 | return 0; |
721 | } | |
722 | ||
723 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
724 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
725 | { | |
fbfa2cc5 JK |
726 | unsigned int ia_valid = attr->ia_valid; |
727 | ||
728 | if (ia_valid & ATTR_UID) | |
729 | inode->i_uid = attr->ia_uid; | |
730 | if (ia_valid & ATTR_GID) | |
731 | inode->i_gid = attr->ia_gid; | |
732 | if (ia_valid & ATTR_ATIME) | |
95582b00 DD |
733 | inode->i_atime = timespec64_trunc(attr->ia_atime, |
734 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 735 | if (ia_valid & ATTR_MTIME) |
95582b00 DD |
736 | inode->i_mtime = timespec64_trunc(attr->ia_mtime, |
737 | inode->i_sb->s_time_gran); | |
fbfa2cc5 | 738 | if (ia_valid & ATTR_CTIME) |
95582b00 DD |
739 | inode->i_ctime = timespec64_trunc(attr->ia_ctime, |
740 | inode->i_sb->s_time_gran); | |
fbfa2cc5 JK |
741 | if (ia_valid & ATTR_MODE) { |
742 | umode_t mode = attr->ia_mode; | |
743 | ||
744 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
745 | mode &= ~S_ISGID; | |
91942321 | 746 | set_acl_inode(inode, mode); |
fbfa2cc5 JK |
747 | } |
748 | } | |
749 | #else | |
750 | #define __setattr_copy setattr_copy | |
751 | #endif | |
752 | ||
753 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
754 | { | |
2b0143b5 | 755 | struct inode *inode = d_inode(dentry); |
fbfa2cc5 | 756 | int err; |
c0ed4405 | 757 | bool size_changed = false; |
fbfa2cc5 | 758 | |
1f227a3e JK |
759 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
760 | return -EIO; | |
761 | ||
31051c85 | 762 | err = setattr_prepare(dentry, attr); |
fbfa2cc5 JK |
763 | if (err) |
764 | return err; | |
765 | ||
20bb2479 EB |
766 | err = fscrypt_prepare_setattr(dentry, attr); |
767 | if (err) | |
768 | return err; | |
769 | ||
0abd675e CY |
770 | if (is_quota_modification(inode, attr)) { |
771 | err = dquot_initialize(inode); | |
772 | if (err) | |
773 | return err; | |
774 | } | |
775 | if ((attr->ia_valid & ATTR_UID && | |
776 | !uid_eq(attr->ia_uid, inode->i_uid)) || | |
777 | (attr->ia_valid & ATTR_GID && | |
778 | !gid_eq(attr->ia_gid, inode->i_gid))) { | |
779 | err = dquot_transfer(inode, attr); | |
780 | if (err) | |
781 | return err; | |
782 | } | |
783 | ||
09db6a2e | 784 | if (attr->ia_valid & ATTR_SIZE) { |
3c454145 | 785 | if (attr->ia_size <= i_size_read(inode)) { |
5a3a2d83 | 786 | down_write(&F2FS_I(inode)->i_mmap_sem); |
09db6a2e | 787 | truncate_setsize(inode, attr->ia_size); |
9a449e9c | 788 | err = f2fs_truncate(inode); |
5a3a2d83 | 789 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b0154891 CY |
790 | if (err) |
791 | return err; | |
09db6a2e CY |
792 | } else { |
793 | /* | |
3c454145 CY |
794 | * do not trim all blocks after i_size if target size is |
795 | * larger than i_size. | |
09db6a2e | 796 | */ |
5a3a2d83 | 797 | down_write(&F2FS_I(inode)->i_mmap_sem); |
3c454145 | 798 | truncate_setsize(inode, attr->ia_size); |
5a3a2d83 | 799 | up_write(&F2FS_I(inode)->i_mmap_sem); |
0cab80ee CY |
800 | |
801 | /* should convert inline inode here */ | |
b9d777b8 | 802 | if (!f2fs_may_inline_data(inode)) { |
0cab80ee CY |
803 | err = f2fs_convert_inline_inode(inode); |
804 | if (err) | |
805 | return err; | |
806 | } | |
078cd827 | 807 | inode->i_mtime = inode->i_ctime = current_time(inode); |
09db6a2e | 808 | } |
c0ed4405 | 809 | |
a0d00fad CY |
810 | down_write(&F2FS_I(inode)->i_sem); |
811 | F2FS_I(inode)->last_disk_size = i_size_read(inode); | |
812 | up_write(&F2FS_I(inode)->i_sem); | |
813 | ||
c0ed4405 | 814 | size_changed = true; |
fbfa2cc5 JK |
815 | } |
816 | ||
817 | __setattr_copy(inode, attr); | |
818 | ||
819 | if (attr->ia_valid & ATTR_MODE) { | |
4d57b86d | 820 | err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode)); |
91942321 JK |
821 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
822 | inode->i_mode = F2FS_I(inode)->i_acl_mode; | |
823 | clear_inode_flag(inode, FI_ACL_MODE); | |
fbfa2cc5 JK |
824 | } |
825 | } | |
826 | ||
c0ed4405 YH |
827 | /* file size may changed here */ |
828 | f2fs_mark_inode_dirty_sync(inode, size_changed); | |
15d04354 JK |
829 | |
830 | /* inode change will produce dirty node pages flushed by checkpoint */ | |
831 | f2fs_balance_fs(F2FS_I_SB(inode), true); | |
832 | ||
fbfa2cc5 JK |
833 | return err; |
834 | } | |
835 | ||
836 | const struct inode_operations f2fs_file_inode_operations = { | |
837 | .getattr = f2fs_getattr, | |
838 | .setattr = f2fs_setattr, | |
839 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 840 | .set_acl = f2fs_set_acl, |
fbfa2cc5 | 841 | #ifdef CONFIG_F2FS_FS_XATTR |
fbfa2cc5 | 842 | .listxattr = f2fs_listxattr, |
fbfa2cc5 | 843 | #endif |
9ab70134 | 844 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
845 | }; |
846 | ||
6394328a | 847 | static int fill_zero(struct inode *inode, pgoff_t index, |
fbfa2cc5 JK |
848 | loff_t start, loff_t len) |
849 | { | |
4081363f | 850 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
851 | struct page *page; |
852 | ||
853 | if (!len) | |
6394328a | 854 | return 0; |
fbfa2cc5 | 855 | |
2c4db1a6 | 856 | f2fs_balance_fs(sbi, true); |
bd43df02 | 857 | |
e479556b | 858 | f2fs_lock_op(sbi); |
4d57b86d | 859 | page = f2fs_get_new_data_page(inode, NULL, index, false); |
e479556b | 860 | f2fs_unlock_op(sbi); |
fbfa2cc5 | 861 | |
6394328a CY |
862 | if (IS_ERR(page)) |
863 | return PTR_ERR(page); | |
864 | ||
fec1d657 | 865 | f2fs_wait_on_page_writeback(page, DATA, true); |
6394328a CY |
866 | zero_user(page, start, len); |
867 | set_page_dirty(page); | |
868 | f2fs_put_page(page, 1); | |
869 | return 0; | |
fbfa2cc5 JK |
870 | } |
871 | ||
4d57b86d | 872 | int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
fbfa2cc5 | 873 | { |
fbfa2cc5 JK |
874 | int err; |
875 | ||
ea58711e | 876 | while (pg_start < pg_end) { |
fbfa2cc5 | 877 | struct dnode_of_data dn; |
ea58711e | 878 | pgoff_t end_offset, count; |
9eaeba70 | 879 | |
fbfa2cc5 | 880 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 881 | err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
fbfa2cc5 | 882 | if (err) { |
ea58711e | 883 | if (err == -ENOENT) { |
4d57b86d CY |
884 | pg_start = f2fs_get_next_page_offset(&dn, |
885 | pg_start); | |
fbfa2cc5 | 886 | continue; |
ea58711e | 887 | } |
fbfa2cc5 JK |
888 | return err; |
889 | } | |
890 | ||
81ca7350 | 891 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
ea58711e CY |
892 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
893 | ||
894 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); | |
895 | ||
4d57b86d | 896 | f2fs_truncate_data_blocks_range(&dn, count); |
fbfa2cc5 | 897 | f2fs_put_dnode(&dn); |
ea58711e CY |
898 | |
899 | pg_start += count; | |
fbfa2cc5 JK |
900 | } |
901 | return 0; | |
902 | } | |
903 | ||
a66c7b2f | 904 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
905 | { |
906 | pgoff_t pg_start, pg_end; | |
907 | loff_t off_start, off_end; | |
b9d777b8 | 908 | int ret; |
fbfa2cc5 | 909 | |
b9d777b8 JK |
910 | ret = f2fs_convert_inline_inode(inode); |
911 | if (ret) | |
912 | return ret; | |
9ffe0fb5 | 913 | |
09cbfeaf KS |
914 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
915 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
fbfa2cc5 | 916 | |
09cbfeaf KS |
917 | off_start = offset & (PAGE_SIZE - 1); |
918 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
fbfa2cc5 JK |
919 | |
920 | if (pg_start == pg_end) { | |
6394328a | 921 | ret = fill_zero(inode, pg_start, off_start, |
fbfa2cc5 | 922 | off_end - off_start); |
6394328a CY |
923 | if (ret) |
924 | return ret; | |
fbfa2cc5 | 925 | } else { |
6394328a CY |
926 | if (off_start) { |
927 | ret = fill_zero(inode, pg_start++, off_start, | |
09cbfeaf | 928 | PAGE_SIZE - off_start); |
6394328a CY |
929 | if (ret) |
930 | return ret; | |
931 | } | |
932 | if (off_end) { | |
933 | ret = fill_zero(inode, pg_end, 0, off_end); | |
934 | if (ret) | |
935 | return ret; | |
936 | } | |
fbfa2cc5 JK |
937 | |
938 | if (pg_start < pg_end) { | |
939 | struct address_space *mapping = inode->i_mapping; | |
940 | loff_t blk_start, blk_end; | |
4081363f | 941 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 | 942 | |
2c4db1a6 | 943 | f2fs_balance_fs(sbi, true); |
fbfa2cc5 | 944 | |
09cbfeaf KS |
945 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
946 | blk_end = (loff_t)pg_end << PAGE_SHIFT; | |
5a3a2d83 | 947 | down_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
948 | truncate_inode_pages_range(mapping, blk_start, |
949 | blk_end - 1); | |
39936837 | 950 | |
e479556b | 951 | f2fs_lock_op(sbi); |
4d57b86d | 952 | ret = f2fs_truncate_hole(inode, pg_start, pg_end); |
e479556b | 953 | f2fs_unlock_op(sbi); |
5a3a2d83 | 954 | up_write(&F2FS_I(inode)->i_mmap_sem); |
fbfa2cc5 JK |
955 | } |
956 | } | |
957 | ||
fbfa2cc5 JK |
958 | return ret; |
959 | } | |
960 | ||
0a2aa8fb JK |
961 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
962 | int *do_replace, pgoff_t off, pgoff_t len) | |
b4ace337 CY |
963 | { |
964 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
965 | struct dnode_of_data dn; | |
0a2aa8fb | 966 | int ret, done, i; |
ecbaa406 | 967 | |
0a2aa8fb | 968 | next_dnode: |
6e2c64ad | 969 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 970 | ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
6e2c64ad JK |
971 | if (ret && ret != -ENOENT) { |
972 | return ret; | |
973 | } else if (ret == -ENOENT) { | |
0a2aa8fb JK |
974 | if (dn.max_level == 0) |
975 | return -ENOENT; | |
976 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); | |
977 | blkaddr += done; | |
978 | do_replace += done; | |
979 | goto next; | |
980 | } | |
981 | ||
982 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - | |
983 | dn.ofs_in_node, len); | |
984 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { | |
7a2af766 CY |
985 | *blkaddr = datablock_addr(dn.inode, |
986 | dn.node_page, dn.ofs_in_node); | |
4d57b86d | 987 | if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) { |
0a2aa8fb JK |
988 | |
989 | if (test_opt(sbi, LFS)) { | |
990 | f2fs_put_dnode(&dn); | |
991 | return -ENOTSUPP; | |
992 | } | |
993 | ||
6e2c64ad | 994 | /* do not invalidate this block address */ |
f28b3434 | 995 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
0a2aa8fb | 996 | *do_replace = 1; |
b4ace337 | 997 | } |
6e2c64ad | 998 | } |
0a2aa8fb JK |
999 | f2fs_put_dnode(&dn); |
1000 | next: | |
1001 | len -= done; | |
1002 | off += done; | |
1003 | if (len) | |
1004 | goto next_dnode; | |
1005 | return 0; | |
1006 | } | |
b4ace337 | 1007 | |
0a2aa8fb JK |
1008 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
1009 | int *do_replace, pgoff_t off, int len) | |
1010 | { | |
1011 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1012 | struct dnode_of_data dn; | |
1013 | int ret, i; | |
b4ace337 | 1014 | |
0a2aa8fb JK |
1015 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
1016 | if (*do_replace == 0) | |
1017 | continue; | |
b4ace337 | 1018 | |
0a2aa8fb | 1019 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1020 | ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); |
0a2aa8fb JK |
1021 | if (ret) { |
1022 | dec_valid_block_count(sbi, inode, 1); | |
4d57b86d | 1023 | f2fs_invalidate_blocks(sbi, *blkaddr); |
0a2aa8fb JK |
1024 | } else { |
1025 | f2fs_update_data_blkaddr(&dn, *blkaddr); | |
36abef4e | 1026 | } |
0a2aa8fb JK |
1027 | f2fs_put_dnode(&dn); |
1028 | } | |
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, | |
1033 | block_t *blkaddr, int *do_replace, | |
1034 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) | |
1035 | { | |
1036 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); | |
1037 | pgoff_t i = 0; | |
1038 | int ret; | |
36abef4e | 1039 | |
0a2aa8fb JK |
1040 | while (i < len) { |
1041 | if (blkaddr[i] == NULL_ADDR && !full) { | |
1042 | i++; | |
1043 | continue; | |
6e2c64ad | 1044 | } |
b4ace337 | 1045 | |
0a2aa8fb JK |
1046 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
1047 | struct dnode_of_data dn; | |
1048 | struct node_info ni; | |
1049 | size_t new_size; | |
1050 | pgoff_t ilen; | |
b4ace337 | 1051 | |
0a2aa8fb | 1052 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
4d57b86d | 1053 | ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE); |
0a2aa8fb JK |
1054 | if (ret) |
1055 | return ret; | |
b4ace337 | 1056 | |
4d57b86d | 1057 | f2fs_get_node_info(sbi, dn.nid, &ni); |
0a2aa8fb JK |
1058 | ilen = min((pgoff_t) |
1059 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - | |
1060 | dn.ofs_in_node, len - i); | |
1061 | do { | |
7a2af766 CY |
1062 | dn.data_blkaddr = datablock_addr(dn.inode, |
1063 | dn.node_page, dn.ofs_in_node); | |
4d57b86d | 1064 | f2fs_truncate_data_blocks_range(&dn, 1); |
0a2aa8fb JK |
1065 | |
1066 | if (do_replace[i]) { | |
1067 | f2fs_i_blocks_write(src_inode, | |
0abd675e | 1068 | 1, false, false); |
0a2aa8fb | 1069 | f2fs_i_blocks_write(dst_inode, |
0abd675e | 1070 | 1, true, false); |
0a2aa8fb JK |
1071 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
1072 | blkaddr[i], ni.version, true, false); | |
1073 | ||
1074 | do_replace[i] = 0; | |
1075 | } | |
1076 | dn.ofs_in_node++; | |
1077 | i++; | |
1078 | new_size = (dst + i) << PAGE_SHIFT; | |
1079 | if (dst_inode->i_size < new_size) | |
1080 | f2fs_i_size_write(dst_inode, new_size); | |
e87f7329 | 1081 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
6e2c64ad | 1082 | |
0a2aa8fb JK |
1083 | f2fs_put_dnode(&dn); |
1084 | } else { | |
1085 | struct page *psrc, *pdst; | |
1086 | ||
4d57b86d CY |
1087 | psrc = f2fs_get_lock_data_page(src_inode, |
1088 | src + i, true); | |
0a2aa8fb JK |
1089 | if (IS_ERR(psrc)) |
1090 | return PTR_ERR(psrc); | |
4d57b86d | 1091 | pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i, |
0a2aa8fb JK |
1092 | true); |
1093 | if (IS_ERR(pdst)) { | |
1094 | f2fs_put_page(psrc, 1); | |
1095 | return PTR_ERR(pdst); | |
1096 | } | |
1097 | f2fs_copy_page(psrc, pdst); | |
1098 | set_page_dirty(pdst); | |
1099 | f2fs_put_page(pdst, 1); | |
6e2c64ad | 1100 | f2fs_put_page(psrc, 1); |
b4ace337 | 1101 | |
4d57b86d CY |
1102 | ret = f2fs_truncate_hole(src_inode, |
1103 | src + i, src + i + 1); | |
0a2aa8fb JK |
1104 | if (ret) |
1105 | return ret; | |
1106 | i++; | |
1107 | } | |
6e2c64ad JK |
1108 | } |
1109 | return 0; | |
0a2aa8fb | 1110 | } |
b4ace337 | 1111 | |
0a2aa8fb JK |
1112 | static int __exchange_data_block(struct inode *src_inode, |
1113 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, | |
363cad7f | 1114 | pgoff_t len, bool full) |
0a2aa8fb JK |
1115 | { |
1116 | block_t *src_blkaddr; | |
1117 | int *do_replace; | |
363cad7f | 1118 | pgoff_t olen; |
0a2aa8fb JK |
1119 | int ret; |
1120 | ||
363cad7f JK |
1121 | while (len) { |
1122 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); | |
0a2aa8fb | 1123 | |
628b3d14 | 1124 | src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
9d2a789c KC |
1125 | array_size(olen, sizeof(block_t)), |
1126 | GFP_KERNEL); | |
363cad7f JK |
1127 | if (!src_blkaddr) |
1128 | return -ENOMEM; | |
0a2aa8fb | 1129 | |
628b3d14 | 1130 | do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
9d2a789c KC |
1131 | array_size(olen, sizeof(int)), |
1132 | GFP_KERNEL); | |
363cad7f JK |
1133 | if (!do_replace) { |
1134 | kvfree(src_blkaddr); | |
1135 | return -ENOMEM; | |
1136 | } | |
0a2aa8fb | 1137 | |
363cad7f JK |
1138 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
1139 | do_replace, src, olen); | |
1140 | if (ret) | |
1141 | goto roll_back; | |
0a2aa8fb | 1142 | |
363cad7f JK |
1143 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
1144 | do_replace, src, dst, olen, full); | |
1145 | if (ret) | |
1146 | goto roll_back; | |
1147 | ||
1148 | src += olen; | |
1149 | dst += olen; | |
1150 | len -= olen; | |
1151 | ||
1152 | kvfree(src_blkaddr); | |
1153 | kvfree(do_replace); | |
1154 | } | |
0a2aa8fb JK |
1155 | return 0; |
1156 | ||
1157 | roll_back: | |
9fd62605 | 1158 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen); |
0a2aa8fb JK |
1159 | kvfree(src_blkaddr); |
1160 | kvfree(do_replace); | |
6e2c64ad JK |
1161 | return ret; |
1162 | } | |
b4ace337 | 1163 | |
6e2c64ad JK |
1164 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
1165 | { | |
1166 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1167 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; | |
0a2aa8fb | 1168 | int ret; |
6e2c64ad | 1169 | |
0a2aa8fb JK |
1170 | f2fs_balance_fs(sbi, true); |
1171 | f2fs_lock_op(sbi); | |
5f281fab JK |
1172 | |
1173 | f2fs_drop_extent_tree(inode); | |
1174 | ||
0a2aa8fb JK |
1175 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
1176 | f2fs_unlock_op(sbi); | |
b4ace337 CY |
1177 | return ret; |
1178 | } | |
1179 | ||
1180 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) | |
1181 | { | |
1182 | pgoff_t pg_start, pg_end; | |
1183 | loff_t new_size; | |
1184 | int ret; | |
1185 | ||
b4ace337 CY |
1186 | if (offset + len >= i_size_read(inode)) |
1187 | return -EINVAL; | |
1188 | ||
1189 | /* collapse range should be aligned to block size of f2fs. */ | |
1190 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1191 | return -EINVAL; | |
1192 | ||
b9d777b8 JK |
1193 | ret = f2fs_convert_inline_inode(inode); |
1194 | if (ret) | |
1195 | return ret; | |
97a7b2c2 | 1196 | |
09cbfeaf KS |
1197 | pg_start = offset >> PAGE_SHIFT; |
1198 | pg_end = (offset + len) >> PAGE_SHIFT; | |
b4ace337 | 1199 | |
21020812 | 1200 | /* avoid gc operation during block exchange */ |
b2532c69 | 1201 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
21020812 | 1202 | |
5a3a2d83 | 1203 | down_write(&F2FS_I(inode)->i_mmap_sem); |
b4ace337 CY |
1204 | /* write out all dirty pages from offset */ |
1205 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1206 | if (ret) | |
21020812 | 1207 | goto out_unlock; |
bb06664a | 1208 | |
b4ace337 CY |
1209 | truncate_pagecache(inode, offset); |
1210 | ||
1211 | ret = f2fs_do_collapse(inode, pg_start, pg_end); | |
1212 | if (ret) | |
bb06664a | 1213 | goto out_unlock; |
b4ace337 | 1214 | |
6e2c64ad JK |
1215 | /* write out all moved pages, if possible */ |
1216 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1217 | truncate_pagecache(inode, offset); | |
1218 | ||
b4ace337 | 1219 | new_size = i_size_read(inode) - len; |
6e2c64ad | 1220 | truncate_pagecache(inode, new_size); |
b4ace337 | 1221 | |
4d57b86d | 1222 | ret = f2fs_truncate_blocks(inode, new_size, true); |
b4ace337 | 1223 | if (!ret) |
fc9581c8 | 1224 | f2fs_i_size_write(inode, new_size); |
bb06664a | 1225 | out_unlock: |
5a3a2d83 | 1226 | up_write(&F2FS_I(inode)->i_mmap_sem); |
b2532c69 | 1227 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
b4ace337 CY |
1228 | return ret; |
1229 | } | |
1230 | ||
6e961949 CY |
1231 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
1232 | pgoff_t end) | |
1233 | { | |
1234 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); | |
1235 | pgoff_t index = start; | |
1236 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1237 | blkcnt_t count = 0; | |
1238 | int ret; | |
1239 | ||
1240 | for (; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1241 | if (datablock_addr(dn->inode, dn->node_page, |
1242 | dn->ofs_in_node) == NULL_ADDR) | |
6e961949 CY |
1243 | count++; |
1244 | } | |
1245 | ||
1246 | dn->ofs_in_node = ofs_in_node; | |
4d57b86d | 1247 | ret = f2fs_reserve_new_blocks(dn, count); |
6e961949 CY |
1248 | if (ret) |
1249 | return ret; | |
1250 | ||
1251 | dn->ofs_in_node = ofs_in_node; | |
1252 | for (index = start; index < end; index++, dn->ofs_in_node++) { | |
7a2af766 CY |
1253 | dn->data_blkaddr = datablock_addr(dn->inode, |
1254 | dn->node_page, dn->ofs_in_node); | |
6e961949 | 1255 | /* |
4d57b86d | 1256 | * f2fs_reserve_new_blocks will not guarantee entire block |
6e961949 CY |
1257 | * allocation. |
1258 | */ | |
1259 | if (dn->data_blkaddr == NULL_ADDR) { | |
1260 | ret = -ENOSPC; | |
1261 | break; | |
1262 | } | |
1263 | if (dn->data_blkaddr != NEW_ADDR) { | |
4d57b86d | 1264 | f2fs_invalidate_blocks(sbi, dn->data_blkaddr); |
6e961949 | 1265 | dn->data_blkaddr = NEW_ADDR; |
4d57b86d | 1266 | f2fs_set_data_blkaddr(dn); |
6e961949 CY |
1267 | } |
1268 | } | |
1269 | ||
1270 | f2fs_update_extent_cache_range(dn, start, 0, index - start); | |
1271 | ||
1272 | return ret; | |
1273 | } | |
1274 | ||
75cd4e09 CY |
1275 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
1276 | int mode) | |
1277 | { | |
1278 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1279 | struct address_space *mapping = inode->i_mapping; | |
1280 | pgoff_t index, pg_start, pg_end; | |
1281 | loff_t new_size = i_size_read(inode); | |
1282 | loff_t off_start, off_end; | |
1283 | int ret = 0; | |
1284 | ||
75cd4e09 CY |
1285 | ret = inode_newsize_ok(inode, (len + offset)); |
1286 | if (ret) | |
1287 | return ret; | |
1288 | ||
b9d777b8 JK |
1289 | ret = f2fs_convert_inline_inode(inode); |
1290 | if (ret) | |
1291 | return ret; | |
75cd4e09 | 1292 | |
5a3a2d83 | 1293 | down_write(&F2FS_I(inode)->i_mmap_sem); |
75cd4e09 CY |
1294 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
1295 | if (ret) | |
5a3a2d83 | 1296 | goto out_sem; |
75cd4e09 CY |
1297 | |
1298 | truncate_pagecache_range(inode, offset, offset + len - 1); | |
1299 | ||
09cbfeaf KS |
1300 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
1301 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; | |
75cd4e09 | 1302 | |
09cbfeaf KS |
1303 | off_start = offset & (PAGE_SIZE - 1); |
1304 | off_end = (offset + len) & (PAGE_SIZE - 1); | |
75cd4e09 CY |
1305 | |
1306 | if (pg_start == pg_end) { | |
6394328a CY |
1307 | ret = fill_zero(inode, pg_start, off_start, |
1308 | off_end - off_start); | |
1309 | if (ret) | |
5a3a2d83 | 1310 | goto out_sem; |
6394328a | 1311 | |
75cd4e09 CY |
1312 | new_size = max_t(loff_t, new_size, offset + len); |
1313 | } else { | |
1314 | if (off_start) { | |
6394328a | 1315 | ret = fill_zero(inode, pg_start++, off_start, |
09cbfeaf | 1316 | PAGE_SIZE - off_start); |
6394328a | 1317 | if (ret) |
5a3a2d83 | 1318 | goto out_sem; |
6394328a | 1319 | |
75cd4e09 | 1320 | new_size = max_t(loff_t, new_size, |
09cbfeaf | 1321 | (loff_t)pg_start << PAGE_SHIFT); |
75cd4e09 CY |
1322 | } |
1323 | ||
6e961949 | 1324 | for (index = pg_start; index < pg_end;) { |
75cd4e09 | 1325 | struct dnode_of_data dn; |
6e961949 CY |
1326 | unsigned int end_offset; |
1327 | pgoff_t end; | |
75cd4e09 CY |
1328 | |
1329 | f2fs_lock_op(sbi); | |
1330 | ||
6e961949 | 1331 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1332 | ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE); |
75cd4e09 CY |
1333 | if (ret) { |
1334 | f2fs_unlock_op(sbi); | |
1335 | goto out; | |
1336 | } | |
1337 | ||
6e961949 CY |
1338 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
1339 | end = min(pg_end, end_offset - dn.ofs_in_node + index); | |
1340 | ||
1341 | ret = f2fs_do_zero_range(&dn, index, end); | |
75cd4e09 CY |
1342 | f2fs_put_dnode(&dn); |
1343 | f2fs_unlock_op(sbi); | |
9434fcde CY |
1344 | |
1345 | f2fs_balance_fs(sbi, dn.node_changed); | |
1346 | ||
6e961949 CY |
1347 | if (ret) |
1348 | goto out; | |
75cd4e09 | 1349 | |
6e961949 | 1350 | index = end; |
75cd4e09 | 1351 | new_size = max_t(loff_t, new_size, |
6e961949 | 1352 | (loff_t)index << PAGE_SHIFT); |
75cd4e09 CY |
1353 | } |
1354 | ||
1355 | if (off_end) { | |
6394328a CY |
1356 | ret = fill_zero(inode, pg_end, 0, off_end); |
1357 | if (ret) | |
1358 | goto out; | |
1359 | ||
75cd4e09 CY |
1360 | new_size = max_t(loff_t, new_size, offset + len); |
1361 | } | |
1362 | } | |
1363 | ||
1364 | out: | |
17cd07ae CY |
1365 | if (new_size > i_size_read(inode)) { |
1366 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1367 | file_set_keep_isize(inode); | |
1368 | else | |
1369 | f2fs_i_size_write(inode, new_size); | |
1370 | } | |
5a3a2d83 QS |
1371 | out_sem: |
1372 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
75cd4e09 CY |
1373 | |
1374 | return ret; | |
1375 | } | |
1376 | ||
f62185d0 CY |
1377 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
1378 | { | |
1379 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
0a2aa8fb | 1380 | pgoff_t nr, pg_start, pg_end, delta, idx; |
f62185d0 | 1381 | loff_t new_size; |
6e2c64ad | 1382 | int ret = 0; |
f62185d0 | 1383 | |
f62185d0 | 1384 | new_size = i_size_read(inode) + len; |
46e82fb1 KM |
1385 | ret = inode_newsize_ok(inode, new_size); |
1386 | if (ret) | |
1387 | return ret; | |
f62185d0 CY |
1388 | |
1389 | if (offset >= i_size_read(inode)) | |
1390 | return -EINVAL; | |
1391 | ||
1392 | /* insert range should be aligned to block size of f2fs. */ | |
1393 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) | |
1394 | return -EINVAL; | |
1395 | ||
b9d777b8 JK |
1396 | ret = f2fs_convert_inline_inode(inode); |
1397 | if (ret) | |
1398 | return ret; | |
97a7b2c2 | 1399 | |
2c4db1a6 | 1400 | f2fs_balance_fs(sbi, true); |
2a340760 | 1401 | |
21020812 | 1402 | /* avoid gc operation during block exchange */ |
b2532c69 | 1403 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
21020812 | 1404 | |
5a3a2d83 | 1405 | down_write(&F2FS_I(inode)->i_mmap_sem); |
4d57b86d | 1406 | ret = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
f62185d0 | 1407 | if (ret) |
5a3a2d83 | 1408 | goto out; |
f62185d0 CY |
1409 | |
1410 | /* write out all dirty pages from offset */ | |
1411 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1412 | if (ret) | |
5a3a2d83 | 1413 | goto out; |
f62185d0 CY |
1414 | |
1415 | truncate_pagecache(inode, offset); | |
1416 | ||
09cbfeaf KS |
1417 | pg_start = offset >> PAGE_SHIFT; |
1418 | pg_end = (offset + len) >> PAGE_SHIFT; | |
f62185d0 | 1419 | delta = pg_end - pg_start; |
0a2aa8fb JK |
1420 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
1421 | ||
1422 | while (!ret && idx > pg_start) { | |
1423 | nr = idx - pg_start; | |
1424 | if (nr > delta) | |
1425 | nr = delta; | |
1426 | idx -= nr; | |
f62185d0 | 1427 | |
f62185d0 | 1428 | f2fs_lock_op(sbi); |
5f281fab JK |
1429 | f2fs_drop_extent_tree(inode); |
1430 | ||
0a2aa8fb JK |
1431 | ret = __exchange_data_block(inode, inode, idx, |
1432 | idx + delta, nr, false); | |
f62185d0 CY |
1433 | f2fs_unlock_op(sbi); |
1434 | } | |
1435 | ||
6e2c64ad JK |
1436 | /* write out all moved pages, if possible */ |
1437 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); | |
1438 | truncate_pagecache(inode, offset); | |
1439 | ||
1440 | if (!ret) | |
fc9581c8 | 1441 | f2fs_i_size_write(inode, new_size); |
5a3a2d83 QS |
1442 | out: |
1443 | up_write(&F2FS_I(inode)->i_mmap_sem); | |
b2532c69 | 1444 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
f62185d0 CY |
1445 | return ret; |
1446 | } | |
1447 | ||
fbfa2cc5 JK |
1448 | static int expand_inode_data(struct inode *inode, loff_t offset, |
1449 | loff_t len, int mode) | |
1450 | { | |
4081363f | 1451 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
d5097be5 | 1452 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL, |
c4020b2d | 1453 | .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE }; |
e12dd7bd | 1454 | pgoff_t pg_end; |
fbfa2cc5 | 1455 | loff_t new_size = i_size_read(inode); |
e12dd7bd | 1456 | loff_t off_end; |
a7de6086 | 1457 | int err; |
fbfa2cc5 | 1458 | |
a7de6086 JK |
1459 | err = inode_newsize_ok(inode, (len + offset)); |
1460 | if (err) | |
1461 | return err; | |
fbfa2cc5 | 1462 | |
a7de6086 JK |
1463 | err = f2fs_convert_inline_inode(inode); |
1464 | if (err) | |
1465 | return err; | |
9e09fc85 | 1466 | |
2c4db1a6 | 1467 | f2fs_balance_fs(sbi, true); |
2a340760 | 1468 | |
e12dd7bd | 1469 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
09cbfeaf | 1470 | off_end = (offset + len) & (PAGE_SIZE - 1); |
fbfa2cc5 | 1471 | |
e12dd7bd JK |
1472 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
1473 | map.m_len = pg_end - map.m_lblk; | |
1474 | if (off_end) | |
1475 | map.m_len++; | |
ead43275 | 1476 | |
a7de6086 JK |
1477 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
1478 | if (err) { | |
e12dd7bd | 1479 | pgoff_t last_off; |
fbfa2cc5 | 1480 | |
e12dd7bd | 1481 | if (!map.m_len) |
a7de6086 | 1482 | return err; |
98397ff3 | 1483 | |
e12dd7bd JK |
1484 | last_off = map.m_lblk + map.m_len - 1; |
1485 | ||
1486 | /* update new size to the failed position */ | |
1061fd48 | 1487 | new_size = (last_off == pg_end) ? offset + len : |
e12dd7bd JK |
1488 | (loff_t)(last_off + 1) << PAGE_SHIFT; |
1489 | } else { | |
1490 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; | |
fbfa2cc5 JK |
1491 | } |
1492 | ||
e8ed90a6 CY |
1493 | if (new_size > i_size_read(inode)) { |
1494 | if (mode & FALLOC_FL_KEEP_SIZE) | |
1495 | file_set_keep_isize(inode); | |
1496 | else | |
1497 | f2fs_i_size_write(inode, new_size); | |
1498 | } | |
fbfa2cc5 | 1499 | |
a7de6086 | 1500 | return err; |
fbfa2cc5 JK |
1501 | } |
1502 | ||
1503 | static long f2fs_fallocate(struct file *file, int mode, | |
1504 | loff_t offset, loff_t len) | |
1505 | { | |
6131ffaa | 1506 | struct inode *inode = file_inode(file); |
587c0a42 | 1507 | long ret = 0; |
fbfa2cc5 | 1508 | |
1f227a3e JK |
1509 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
1510 | return -EIO; | |
1511 | ||
c998012b CY |
1512 | /* f2fs only support ->fallocate for regular file */ |
1513 | if (!S_ISREG(inode->i_mode)) | |
1514 | return -EINVAL; | |
1515 | ||
f62185d0 CY |
1516 | if (f2fs_encrypted_inode(inode) && |
1517 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) | |
fcc85a4d JK |
1518 | return -EOPNOTSUPP; |
1519 | ||
b4ace337 | 1520 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
f62185d0 CY |
1521 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
1522 | FALLOC_FL_INSERT_RANGE)) | |
fbfa2cc5 JK |
1523 | return -EOPNOTSUPP; |
1524 | ||
5955102c | 1525 | inode_lock(inode); |
3375f696 | 1526 | |
587c0a42 TY |
1527 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
1528 | if (offset >= inode->i_size) | |
1529 | goto out; | |
1530 | ||
a66c7b2f | 1531 | ret = punch_hole(inode, offset, len); |
b4ace337 CY |
1532 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
1533 | ret = f2fs_collapse_range(inode, offset, len); | |
75cd4e09 CY |
1534 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
1535 | ret = f2fs_zero_range(inode, offset, len, mode); | |
f62185d0 CY |
1536 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
1537 | ret = f2fs_insert_range(inode, offset, len); | |
b4ace337 | 1538 | } else { |
fbfa2cc5 | 1539 | ret = expand_inode_data(inode, offset, len, mode); |
b4ace337 | 1540 | } |
fbfa2cc5 | 1541 | |
3af60a49 | 1542 | if (!ret) { |
078cd827 | 1543 | inode->i_mtime = inode->i_ctime = current_time(inode); |
7c45729a | 1544 | f2fs_mark_inode_dirty_sync(inode, false); |
d0239e1b | 1545 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3af60a49 | 1546 | } |
3375f696 | 1547 | |
587c0a42 | 1548 | out: |
5955102c | 1549 | inode_unlock(inode); |
3375f696 | 1550 | |
c01e2853 | 1551 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
1552 | return ret; |
1553 | } | |
1554 | ||
1e84371f JK |
1555 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
1556 | { | |
de5307e4 JK |
1557 | /* |
1558 | * f2fs_relase_file is called at every close calls. So we should | |
1559 | * not drop any inmemory pages by close called by other process. | |
1560 | */ | |
1561 | if (!(filp->f_mode & FMODE_WRITE) || | |
1562 | atomic_read(&inode->i_writecount) != 1) | |
1563 | return 0; | |
1564 | ||
1e84371f JK |
1565 | /* some remained atomic pages should discarded */ |
1566 | if (f2fs_is_atomic_file(inode)) | |
4d57b86d | 1567 | f2fs_drop_inmem_pages(inode); |
1e84371f | 1568 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1569 | set_inode_flag(inode, FI_DROP_CACHE); |
1e84371f | 1570 | filemap_fdatawrite(inode->i_mapping); |
91942321 | 1571 | clear_inode_flag(inode, FI_DROP_CACHE); |
dfa74280 CY |
1572 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
1573 | stat_dec_volatile_write(inode); | |
1e84371f JK |
1574 | } |
1575 | return 0; | |
1576 | } | |
1577 | ||
7a10f017 | 1578 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
fbfa2cc5 | 1579 | { |
7a10f017 JK |
1580 | struct inode *inode = file_inode(file); |
1581 | ||
1582 | /* | |
1583 | * If the process doing a transaction is crashed, we should do | |
1584 | * roll-back. Otherwise, other reader/write can see corrupted database | |
1585 | * until all the writers close its file. Since this should be done | |
1586 | * before dropping file lock, it needs to do in ->flush. | |
1587 | */ | |
1588 | if (f2fs_is_atomic_file(inode) && | |
1589 | F2FS_I(inode)->inmem_task == current) | |
4d57b86d | 1590 | f2fs_drop_inmem_pages(inode); |
7a10f017 | 1591 | return 0; |
fbfa2cc5 JK |
1592 | } |
1593 | ||
52656e6c | 1594 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 1595 | { |
6131ffaa | 1596 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 1597 | struct f2fs_inode_info *fi = F2FS_I(inode); |
76481158 CY |
1598 | unsigned int flags = fi->i_flags; |
1599 | ||
1600 | if (file_is_encrypt(inode)) | |
1601 | flags |= F2FS_ENCRYPT_FL; | |
1602 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) | |
1603 | flags |= F2FS_INLINE_DATA_FL; | |
1604 | ||
1605 | flags &= F2FS_FL_USER_VISIBLE; | |
1606 | ||
52656e6c JK |
1607 | return put_user(flags, (int __user *)arg); |
1608 | } | |
fbfa2cc5 | 1609 | |
2c1d0305 CY |
1610 | static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags) |
1611 | { | |
1612 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
1613 | unsigned int oldflags; | |
1614 | ||
1615 | /* Is it quota file? Do not allow user to mess with it */ | |
1616 | if (IS_NOQUOTA(inode)) | |
1617 | return -EPERM; | |
1618 | ||
1619 | flags = f2fs_mask_flags(inode->i_mode, flags); | |
1620 | ||
1621 | oldflags = fi->i_flags; | |
1622 | ||
59c84408 | 1623 | if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) |
2c1d0305 CY |
1624 | if (!capable(CAP_LINUX_IMMUTABLE)) |
1625 | return -EPERM; | |
1626 | ||
c807a7cb CY |
1627 | flags = flags & F2FS_FL_USER_MODIFIABLE; |
1628 | flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE; | |
2c1d0305 CY |
1629 | fi->i_flags = flags; |
1630 | ||
59c84408 | 1631 | if (fi->i_flags & F2FS_PROJINHERIT_FL) |
2c1d0305 CY |
1632 | set_inode_flag(inode, FI_PROJ_INHERIT); |
1633 | else | |
1634 | clear_inode_flag(inode, FI_PROJ_INHERIT); | |
1635 | ||
1636 | inode->i_ctime = current_time(inode); | |
1637 | f2fs_set_inode_flags(inode); | |
1638 | f2fs_mark_inode_dirty_sync(inode, false); | |
1639 | return 0; | |
1640 | } | |
1641 | ||
52656e6c JK |
1642 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
1643 | { | |
1644 | struct inode *inode = file_inode(filp); | |
69494229 | 1645 | unsigned int flags; |
52656e6c | 1646 | int ret; |
fbfa2cc5 | 1647 | |
7fb17fe4 CY |
1648 | if (!inode_owner_or_capable(inode)) |
1649 | return -EACCES; | |
1650 | ||
1651 | if (get_user(flags, (int __user *)arg)) | |
1652 | return -EFAULT; | |
1653 | ||
52656e6c JK |
1654 | ret = mnt_want_write_file(filp); |
1655 | if (ret) | |
1656 | return ret; | |
fbfa2cc5 | 1657 | |
5955102c | 1658 | inode_lock(inode); |
fbfa2cc5 | 1659 | |
2c1d0305 | 1660 | ret = __f2fs_ioc_setflags(inode, flags); |
fbfa2cc5 | 1661 | |
a72d4b97 | 1662 | inode_unlock(inode); |
52656e6c JK |
1663 | mnt_drop_write_file(filp); |
1664 | return ret; | |
1665 | } | |
4b2fecc8 | 1666 | |
d49f3e89 CY |
1667 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
1668 | { | |
1669 | struct inode *inode = file_inode(filp); | |
1670 | ||
1671 | return put_user(inode->i_generation, (int __user *)arg); | |
1672 | } | |
1673 | ||
88b88a66 JK |
1674 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
1675 | { | |
1676 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1677 | int ret; |
88b88a66 JK |
1678 | |
1679 | if (!inode_owner_or_capable(inode)) | |
1680 | return -EACCES; | |
1681 | ||
e811898c JK |
1682 | if (!S_ISREG(inode->i_mode)) |
1683 | return -EINVAL; | |
1684 | ||
7fb17fe4 CY |
1685 | ret = mnt_want_write_file(filp); |
1686 | if (ret) | |
1687 | return ret; | |
1688 | ||
0fac558b CY |
1689 | inode_lock(inode); |
1690 | ||
b2532c69 | 1691 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
27319ba4 | 1692 | |
1e84371f | 1693 | if (f2fs_is_atomic_file(inode)) |
7fb17fe4 | 1694 | goto out; |
88b88a66 | 1695 | |
f4c9c743 CY |
1696 | ret = f2fs_convert_inline_inode(inode); |
1697 | if (ret) | |
7fb17fe4 | 1698 | goto out; |
88b88a66 | 1699 | |
c27753d6 | 1700 | if (!get_dirty_pages(inode)) |
054afda9 | 1701 | goto skip_flush; |
c27753d6 JK |
1702 | |
1703 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, | |
204706c7 | 1704 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
c27753d6 JK |
1705 | inode->i_ino, get_dirty_pages(inode)); |
1706 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); | |
054afda9 | 1707 | if (ret) |
684ca7e5 | 1708 | goto out; |
054afda9 | 1709 | skip_flush: |
054afda9 | 1710 | set_inode_flag(inode, FI_ATOMIC_FILE); |
2ef79ecb | 1711 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
054afda9 | 1712 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
684ca7e5 | 1713 | |
7a10f017 | 1714 | F2FS_I(inode)->inmem_task = current; |
26a28a0c JK |
1715 | stat_inc_atomic_write(inode); |
1716 | stat_update_max_atomic_write(inode); | |
684ca7e5 | 1717 | out: |
b2532c69 | 1718 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
0fac558b | 1719 | inode_unlock(inode); |
7fb17fe4 | 1720 | mnt_drop_write_file(filp); |
c27753d6 | 1721 | return ret; |
88b88a66 JK |
1722 | } |
1723 | ||
1724 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
1725 | { | |
1726 | struct inode *inode = file_inode(filp); | |
1727 | int ret; | |
1728 | ||
1729 | if (!inode_owner_or_capable(inode)) | |
1730 | return -EACCES; | |
1731 | ||
1732 | ret = mnt_want_write_file(filp); | |
1733 | if (ret) | |
1734 | return ret; | |
1735 | ||
0fac558b CY |
1736 | inode_lock(inode); |
1737 | ||
b2532c69 | 1738 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
1dc0f899 | 1739 | |
b169c3c5 CY |
1740 | if (f2fs_is_volatile_file(inode)) { |
1741 | ret = -EINVAL; | |
7fb17fe4 | 1742 | goto err_out; |
b169c3c5 | 1743 | } |
7fb17fe4 | 1744 | |
6282adbf | 1745 | if (f2fs_is_atomic_file(inode)) { |
4d57b86d | 1746 | ret = f2fs_commit_inmem_pages(inode); |
5fe45743 | 1747 | if (ret) |
edb27dee | 1748 | goto err_out; |
5fe45743 | 1749 | |
26a28a0c | 1750 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
5fe45743 CY |
1751 | if (!ret) { |
1752 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
2ef79ecb | 1753 | F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0; |
5fe45743 | 1754 | stat_dec_atomic_write(inode); |
447135a8 | 1755 | } |
26a28a0c | 1756 | } else { |
774e1b78 | 1757 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
6282adbf | 1758 | } |
edb27dee | 1759 | err_out: |
2ef79ecb CY |
1760 | if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { |
1761 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); | |
1762 | ret = -EINVAL; | |
1763 | } | |
b2532c69 | 1764 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
0fac558b | 1765 | inode_unlock(inode); |
88b88a66 JK |
1766 | mnt_drop_write_file(filp); |
1767 | return ret; | |
1768 | } | |
1769 | ||
02a1335f JK |
1770 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
1771 | { | |
1772 | struct inode *inode = file_inode(filp); | |
f4c9c743 | 1773 | int ret; |
02a1335f JK |
1774 | |
1775 | if (!inode_owner_or_capable(inode)) | |
1776 | return -EACCES; | |
1777 | ||
8ff0971f CY |
1778 | if (!S_ISREG(inode->i_mode)) |
1779 | return -EINVAL; | |
1780 | ||
7fb17fe4 CY |
1781 | ret = mnt_want_write_file(filp); |
1782 | if (ret) | |
1783 | return ret; | |
1784 | ||
0fac558b CY |
1785 | inode_lock(inode); |
1786 | ||
1e84371f | 1787 | if (f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1788 | goto out; |
1e84371f | 1789 | |
f4c9c743 CY |
1790 | ret = f2fs_convert_inline_inode(inode); |
1791 | if (ret) | |
7fb17fe4 | 1792 | goto out; |
b3d208f9 | 1793 | |
648d50ba CY |
1794 | stat_inc_volatile_write(inode); |
1795 | stat_update_max_volatile_write(inode); | |
1796 | ||
91942321 | 1797 | set_inode_flag(inode, FI_VOLATILE_FILE); |
d0239e1b | 1798 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1799 | out: |
0fac558b | 1800 | inode_unlock(inode); |
7fb17fe4 CY |
1801 | mnt_drop_write_file(filp); |
1802 | return ret; | |
02a1335f JK |
1803 | } |
1804 | ||
1e84371f JK |
1805 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
1806 | { | |
1807 | struct inode *inode = file_inode(filp); | |
7fb17fe4 | 1808 | int ret; |
1e84371f JK |
1809 | |
1810 | if (!inode_owner_or_capable(inode)) | |
1811 | return -EACCES; | |
1812 | ||
7fb17fe4 CY |
1813 | ret = mnt_want_write_file(filp); |
1814 | if (ret) | |
1815 | return ret; | |
1816 | ||
0fac558b CY |
1817 | inode_lock(inode); |
1818 | ||
1e84371f | 1819 | if (!f2fs_is_volatile_file(inode)) |
7fb17fe4 | 1820 | goto out; |
1e84371f | 1821 | |
7fb17fe4 CY |
1822 | if (!f2fs_is_first_block_written(inode)) { |
1823 | ret = truncate_partial_data_page(inode, 0, true); | |
1824 | goto out; | |
1825 | } | |
3c6c2beb | 1826 | |
7fb17fe4 CY |
1827 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
1828 | out: | |
0fac558b | 1829 | inode_unlock(inode); |
7fb17fe4 CY |
1830 | mnt_drop_write_file(filp); |
1831 | return ret; | |
1e84371f JK |
1832 | } |
1833 | ||
1834 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
1835 | { | |
1836 | struct inode *inode = file_inode(filp); | |
1837 | int ret; | |
1838 | ||
1839 | if (!inode_owner_or_capable(inode)) | |
1840 | return -EACCES; | |
1841 | ||
1842 | ret = mnt_want_write_file(filp); | |
1843 | if (ret) | |
1844 | return ret; | |
1845 | ||
0fac558b CY |
1846 | inode_lock(inode); |
1847 | ||
26dc3d44 | 1848 | if (f2fs_is_atomic_file(inode)) |
4d57b86d | 1849 | f2fs_drop_inmem_pages(inode); |
732d5648 | 1850 | if (f2fs_is_volatile_file(inode)) { |
91942321 | 1851 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
648d50ba | 1852 | stat_dec_volatile_write(inode); |
608514de | 1853 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
732d5648 | 1854 | } |
de6a8ec9 | 1855 | |
0fac558b CY |
1856 | inode_unlock(inode); |
1857 | ||
1e84371f | 1858 | mnt_drop_write_file(filp); |
d0239e1b | 1859 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
1e84371f JK |
1860 | return ret; |
1861 | } | |
1862 | ||
1abff93d JK |
1863 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
1864 | { | |
1865 | struct inode *inode = file_inode(filp); | |
1866 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1867 | struct super_block *sb = sbi->sb; | |
1868 | __u32 in; | |
7fb17fe4 | 1869 | int ret; |
1abff93d JK |
1870 | |
1871 | if (!capable(CAP_SYS_ADMIN)) | |
1872 | return -EPERM; | |
1873 | ||
1874 | if (get_user(in, (__u32 __user *)arg)) | |
1875 | return -EFAULT; | |
1876 | ||
60b2b4ee ST |
1877 | if (in != F2FS_GOING_DOWN_FULLSYNC) { |
1878 | ret = mnt_want_write_file(filp); | |
1879 | if (ret) | |
1880 | return ret; | |
1881 | } | |
7fb17fe4 | 1882 | |
1abff93d JK |
1883 | switch (in) { |
1884 | case F2FS_GOING_DOWN_FULLSYNC: | |
1885 | sb = freeze_bdev(sb->s_bdev); | |
d027c484 CY |
1886 | if (IS_ERR(sb)) { |
1887 | ret = PTR_ERR(sb); | |
1888 | goto out; | |
1889 | } | |
1890 | if (sb) { | |
38f91ca8 | 1891 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1892 | thaw_bdev(sb->s_bdev, sb); |
1893 | } | |
1894 | break; | |
1895 | case F2FS_GOING_DOWN_METASYNC: | |
1896 | /* do checkpoint only */ | |
d027c484 CY |
1897 | ret = f2fs_sync_fs(sb, 1); |
1898 | if (ret) | |
1899 | goto out; | |
38f91ca8 | 1900 | f2fs_stop_checkpoint(sbi, false); |
1abff93d JK |
1901 | break; |
1902 | case F2FS_GOING_DOWN_NOSYNC: | |
38f91ca8 | 1903 | f2fs_stop_checkpoint(sbi, false); |
1abff93d | 1904 | break; |
c912a829 | 1905 | case F2FS_GOING_DOWN_METAFLUSH: |
4d57b86d | 1906 | f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); |
38f91ca8 | 1907 | f2fs_stop_checkpoint(sbi, false); |
c912a829 | 1908 | break; |
1abff93d | 1909 | default: |
7fb17fe4 CY |
1910 | ret = -EINVAL; |
1911 | goto out; | |
1abff93d | 1912 | } |
7950e9ac | 1913 | |
4d57b86d CY |
1914 | f2fs_stop_gc_thread(sbi); |
1915 | f2fs_stop_discard_thread(sbi); | |
7950e9ac | 1916 | |
4d57b86d | 1917 | f2fs_drop_discard_cmd(sbi); |
7950e9ac CY |
1918 | clear_opt(sbi, DISCARD); |
1919 | ||
d0239e1b | 1920 | f2fs_update_time(sbi, REQ_TIME); |
7fb17fe4 | 1921 | out: |
60b2b4ee ST |
1922 | if (in != F2FS_GOING_DOWN_FULLSYNC) |
1923 | mnt_drop_write_file(filp); | |
7fb17fe4 | 1924 | return ret; |
1abff93d JK |
1925 | } |
1926 | ||
52656e6c JK |
1927 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1928 | { | |
1929 | struct inode *inode = file_inode(filp); | |
1930 | struct super_block *sb = inode->i_sb; | |
1931 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1932 | struct fstrim_range range; | |
1933 | int ret; | |
4b2fecc8 | 1934 | |
52656e6c JK |
1935 | if (!capable(CAP_SYS_ADMIN)) |
1936 | return -EPERM; | |
4b2fecc8 | 1937 | |
52656e6c JK |
1938 | if (!blk_queue_discard(q)) |
1939 | return -EOPNOTSUPP; | |
4b2fecc8 | 1940 | |
52656e6c JK |
1941 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1942 | sizeof(range))) | |
1943 | return -EFAULT; | |
4b2fecc8 | 1944 | |
7fb17fe4 CY |
1945 | ret = mnt_want_write_file(filp); |
1946 | if (ret) | |
1947 | return ret; | |
1948 | ||
52656e6c JK |
1949 | range.minlen = max((unsigned int)range.minlen, |
1950 | q->limits.discard_granularity); | |
1951 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
7fb17fe4 | 1952 | mnt_drop_write_file(filp); |
52656e6c JK |
1953 | if (ret < 0) |
1954 | return ret; | |
4b2fecc8 | 1955 | |
52656e6c JK |
1956 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1957 | sizeof(range))) | |
1958 | return -EFAULT; | |
d0239e1b | 1959 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
52656e6c JK |
1960 | return 0; |
1961 | } | |
1962 | ||
f424f664 JK |
1963 | static bool uuid_is_nonzero(__u8 u[16]) |
1964 | { | |
1965 | int i; | |
1966 | ||
1967 | for (i = 0; i < 16; i++) | |
1968 | if (u[i]) | |
1969 | return true; | |
1970 | return false; | |
1971 | } | |
1972 | ||
1973 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) | |
1974 | { | |
f424f664 JK |
1975 | struct inode *inode = file_inode(filp); |
1976 | ||
ccd31cb2 | 1977 | if (!f2fs_sb_has_encrypt(inode->i_sb)) |
ead710b7 CY |
1978 | return -EOPNOTSUPP; |
1979 | ||
d0239e1b | 1980 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
7fb17fe4 | 1981 | |
db717d8e | 1982 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
f424f664 JK |
1983 | } |
1984 | ||
1985 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) | |
1986 | { | |
ccd31cb2 | 1987 | if (!f2fs_sb_has_encrypt(file_inode(filp)->i_sb)) |
ead710b7 | 1988 | return -EOPNOTSUPP; |
db717d8e | 1989 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
f424f664 JK |
1990 | } |
1991 | ||
1992 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) | |
1993 | { | |
1994 | struct inode *inode = file_inode(filp); | |
1995 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1996 | int err; | |
1997 | ||
ccd31cb2 | 1998 | if (!f2fs_sb_has_encrypt(inode->i_sb)) |
f424f664 JK |
1999 | return -EOPNOTSUPP; |
2000 | ||
f424f664 JK |
2001 | err = mnt_want_write_file(filp); |
2002 | if (err) | |
2003 | return err; | |
2004 | ||
846ae671 | 2005 | down_write(&sbi->sb_lock); |
d0d3f1b3 CY |
2006 | |
2007 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) | |
2008 | goto got_it; | |
2009 | ||
f424f664 JK |
2010 | /* update superblock with uuid */ |
2011 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); | |
2012 | ||
c5bda1c8 | 2013 | err = f2fs_commit_super(sbi, false); |
f424f664 JK |
2014 | if (err) { |
2015 | /* undo new data */ | |
2016 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); | |
d0d3f1b3 | 2017 | goto out_err; |
f424f664 JK |
2018 | } |
2019 | got_it: | |
2020 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, | |
2021 | 16)) | |
d0d3f1b3 CY |
2022 | err = -EFAULT; |
2023 | out_err: | |
846ae671 | 2024 | up_write(&sbi->sb_lock); |
d0d3f1b3 CY |
2025 | mnt_drop_write_file(filp); |
2026 | return err; | |
f424f664 JK |
2027 | } |
2028 | ||
c1c1b583 CY |
2029 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
2030 | { | |
2031 | struct inode *inode = file_inode(filp); | |
2032 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
d530d4d8 | 2033 | __u32 sync; |
7fb17fe4 | 2034 | int ret; |
c1c1b583 CY |
2035 | |
2036 | if (!capable(CAP_SYS_ADMIN)) | |
2037 | return -EPERM; | |
2038 | ||
d530d4d8 | 2039 | if (get_user(sync, (__u32 __user *)arg)) |
c1c1b583 CY |
2040 | return -EFAULT; |
2041 | ||
d530d4d8 CY |
2042 | if (f2fs_readonly(sbi->sb)) |
2043 | return -EROFS; | |
c1c1b583 | 2044 | |
7fb17fe4 CY |
2045 | ret = mnt_want_write_file(filp); |
2046 | if (ret) | |
2047 | return ret; | |
2048 | ||
d530d4d8 | 2049 | if (!sync) { |
7fb17fe4 CY |
2050 | if (!mutex_trylock(&sbi->gc_mutex)) { |
2051 | ret = -EBUSY; | |
2052 | goto out; | |
2053 | } | |
d530d4d8 CY |
2054 | } else { |
2055 | mutex_lock(&sbi->gc_mutex); | |
c1c1b583 CY |
2056 | } |
2057 | ||
e066b83c | 2058 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
7fb17fe4 CY |
2059 | out: |
2060 | mnt_drop_write_file(filp); | |
2061 | return ret; | |
c1c1b583 CY |
2062 | } |
2063 | ||
34dc77ad JK |
2064 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
2065 | { | |
2066 | struct inode *inode = file_inode(filp); | |
2067 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2068 | struct f2fs_gc_range range; | |
2069 | u64 end; | |
2070 | int ret; | |
2071 | ||
2072 | if (!capable(CAP_SYS_ADMIN)) | |
2073 | return -EPERM; | |
2074 | ||
2075 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, | |
2076 | sizeof(range))) | |
2077 | return -EFAULT; | |
2078 | ||
2079 | if (f2fs_readonly(sbi->sb)) | |
2080 | return -EROFS; | |
2081 | ||
b82f6e34 YH |
2082 | end = range.start + range.len; |
2083 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) { | |
2084 | return -EINVAL; | |
2085 | } | |
2086 | ||
34dc77ad JK |
2087 | ret = mnt_want_write_file(filp); |
2088 | if (ret) | |
2089 | return ret; | |
2090 | ||
34dc77ad JK |
2091 | do_more: |
2092 | if (!range.sync) { | |
2093 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2094 | ret = -EBUSY; | |
2095 | goto out; | |
2096 | } | |
2097 | } else { | |
2098 | mutex_lock(&sbi->gc_mutex); | |
2099 | } | |
2100 | ||
2101 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); | |
2102 | range.start += sbi->blocks_per_seg; | |
2103 | if (range.start <= end) | |
2104 | goto do_more; | |
2105 | out: | |
2106 | mnt_drop_write_file(filp); | |
2107 | return ret; | |
2108 | } | |
2109 | ||
4d57b86d | 2110 | static int f2fs_ioc_f2fs_write_checkpoint(struct file *filp, unsigned long arg) |
456b88e4 CY |
2111 | { |
2112 | struct inode *inode = file_inode(filp); | |
2113 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
7fb17fe4 | 2114 | int ret; |
456b88e4 CY |
2115 | |
2116 | if (!capable(CAP_SYS_ADMIN)) | |
2117 | return -EPERM; | |
2118 | ||
2119 | if (f2fs_readonly(sbi->sb)) | |
2120 | return -EROFS; | |
2121 | ||
7fb17fe4 CY |
2122 | ret = mnt_want_write_file(filp); |
2123 | if (ret) | |
2124 | return ret; | |
2125 | ||
2126 | ret = f2fs_sync_fs(sbi->sb, 1); | |
2127 | ||
2128 | mnt_drop_write_file(filp); | |
2129 | return ret; | |
456b88e4 CY |
2130 | } |
2131 | ||
d323d005 CY |
2132 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
2133 | struct file *filp, | |
2134 | struct f2fs_defragment *range) | |
2135 | { | |
2136 | struct inode *inode = file_inode(filp); | |
f3d98e74 CY |
2137 | struct f2fs_map_blocks map = { .m_next_extent = NULL, |
2138 | .m_seg_type = NO_CHECK_TYPE }; | |
1061fd48 | 2139 | struct extent_info ei = {0, 0, 0}; |
f3d98e74 | 2140 | pgoff_t pg_start, pg_end, next_pgofs; |
3519e3f9 | 2141 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
d323d005 | 2142 | unsigned int total = 0, sec_num; |
d323d005 CY |
2143 | block_t blk_end = 0; |
2144 | bool fragmented = false; | |
2145 | int err; | |
2146 | ||
2147 | /* if in-place-update policy is enabled, don't waste time here */ | |
4d57b86d | 2148 | if (f2fs_should_update_inplace(inode, NULL)) |
d323d005 CY |
2149 | return -EINVAL; |
2150 | ||
09cbfeaf KS |
2151 | pg_start = range->start >> PAGE_SHIFT; |
2152 | pg_end = (range->start + range->len) >> PAGE_SHIFT; | |
d323d005 | 2153 | |
2c4db1a6 | 2154 | f2fs_balance_fs(sbi, true); |
d323d005 | 2155 | |
5955102c | 2156 | inode_lock(inode); |
d323d005 CY |
2157 | |
2158 | /* writeback all dirty pages in the range */ | |
2159 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, | |
d8fe4f0e | 2160 | range->start + range->len - 1); |
d323d005 CY |
2161 | if (err) |
2162 | goto out; | |
2163 | ||
2164 | /* | |
2165 | * lookup mapping info in extent cache, skip defragmenting if physical | |
2166 | * block addresses are continuous. | |
2167 | */ | |
2168 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { | |
2169 | if (ei.fofs + ei.len >= pg_end) | |
2170 | goto out; | |
2171 | } | |
2172 | ||
2173 | map.m_lblk = pg_start; | |
f3d98e74 | 2174 | map.m_next_pgofs = &next_pgofs; |
d323d005 CY |
2175 | |
2176 | /* | |
2177 | * lookup mapping info in dnode page cache, skip defragmenting if all | |
2178 | * physical block addresses are continuous even if there are hole(s) | |
2179 | * in logical blocks. | |
2180 | */ | |
2181 | while (map.m_lblk < pg_end) { | |
a1c1e9b7 | 2182 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2183 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2184 | if (err) |
2185 | goto out; | |
2186 | ||
2187 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2188 | map.m_lblk = next_pgofs; |
d323d005 CY |
2189 | continue; |
2190 | } | |
2191 | ||
25a912e5 | 2192 | if (blk_end && blk_end != map.m_pblk) |
d323d005 | 2193 | fragmented = true; |
25a912e5 CY |
2194 | |
2195 | /* record total count of block that we're going to move */ | |
2196 | total += map.m_len; | |
2197 | ||
d323d005 CY |
2198 | blk_end = map.m_pblk + map.m_len; |
2199 | ||
2200 | map.m_lblk += map.m_len; | |
d323d005 CY |
2201 | } |
2202 | ||
2203 | if (!fragmented) | |
2204 | goto out; | |
2205 | ||
25a912e5 | 2206 | sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
d323d005 CY |
2207 | |
2208 | /* | |
2209 | * make sure there are enough free section for LFS allocation, this can | |
2210 | * avoid defragment running in SSR mode when free section are allocated | |
2211 | * intensively | |
2212 | */ | |
7f3037a5 | 2213 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
d323d005 CY |
2214 | err = -EAGAIN; |
2215 | goto out; | |
2216 | } | |
2217 | ||
25a912e5 CY |
2218 | map.m_lblk = pg_start; |
2219 | map.m_len = pg_end - pg_start; | |
2220 | total = 0; | |
2221 | ||
d323d005 CY |
2222 | while (map.m_lblk < pg_end) { |
2223 | pgoff_t idx; | |
2224 | int cnt = 0; | |
2225 | ||
2226 | do_map: | |
a1c1e9b7 | 2227 | map.m_len = pg_end - map.m_lblk; |
f2220c7f | 2228 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
d323d005 CY |
2229 | if (err) |
2230 | goto clear_out; | |
2231 | ||
2232 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { | |
f3d98e74 | 2233 | map.m_lblk = next_pgofs; |
d323d005 CY |
2234 | continue; |
2235 | } | |
2236 | ||
91942321 | 2237 | set_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2238 | |
2239 | idx = map.m_lblk; | |
2240 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { | |
2241 | struct page *page; | |
2242 | ||
4d57b86d | 2243 | page = f2fs_get_lock_data_page(inode, idx, true); |
d323d005 CY |
2244 | if (IS_ERR(page)) { |
2245 | err = PTR_ERR(page); | |
2246 | goto clear_out; | |
2247 | } | |
2248 | ||
2249 | set_page_dirty(page); | |
2250 | f2fs_put_page(page, 1); | |
2251 | ||
2252 | idx++; | |
2253 | cnt++; | |
2254 | total++; | |
2255 | } | |
2256 | ||
2257 | map.m_lblk = idx; | |
d323d005 CY |
2258 | |
2259 | if (idx < pg_end && cnt < blk_per_seg) | |
2260 | goto do_map; | |
2261 | ||
91942321 | 2262 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 CY |
2263 | |
2264 | err = filemap_fdatawrite(inode->i_mapping); | |
2265 | if (err) | |
2266 | goto out; | |
2267 | } | |
2268 | clear_out: | |
91942321 | 2269 | clear_inode_flag(inode, FI_DO_DEFRAG); |
d323d005 | 2270 | out: |
5955102c | 2271 | inode_unlock(inode); |
d323d005 | 2272 | if (!err) |
09cbfeaf | 2273 | range->len = (u64)total << PAGE_SHIFT; |
d323d005 CY |
2274 | return err; |
2275 | } | |
2276 | ||
2277 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) | |
2278 | { | |
2279 | struct inode *inode = file_inode(filp); | |
2280 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2281 | struct f2fs_defragment range; | |
2282 | int err; | |
2283 | ||
2284 | if (!capable(CAP_SYS_ADMIN)) | |
2285 | return -EPERM; | |
2286 | ||
7eab0c0d | 2287 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
d323d005 CY |
2288 | return -EINVAL; |
2289 | ||
d7563861 KM |
2290 | if (f2fs_readonly(sbi->sb)) |
2291 | return -EROFS; | |
d323d005 CY |
2292 | |
2293 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, | |
d7563861 KM |
2294 | sizeof(range))) |
2295 | return -EFAULT; | |
d323d005 CY |
2296 | |
2297 | /* verify alignment of offset & size */ | |
d7563861 KM |
2298 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
2299 | return -EINVAL; | |
d323d005 | 2300 | |
1941d7bc | 2301 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
d7563861 KM |
2302 | sbi->max_file_blocks)) |
2303 | return -EINVAL; | |
2304 | ||
2305 | err = mnt_want_write_file(filp); | |
2306 | if (err) | |
2307 | return err; | |
1941d7bc | 2308 | |
d323d005 | 2309 | err = f2fs_defragment_range(sbi, filp, &range); |
d7563861 KM |
2310 | mnt_drop_write_file(filp); |
2311 | ||
d0239e1b | 2312 | f2fs_update_time(sbi, REQ_TIME); |
d323d005 | 2313 | if (err < 0) |
d7563861 | 2314 | return err; |
d323d005 CY |
2315 | |
2316 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, | |
2317 | sizeof(range))) | |
d7563861 KM |
2318 | return -EFAULT; |
2319 | ||
2320 | return 0; | |
d323d005 CY |
2321 | } |
2322 | ||
4dd6f977 JK |
2323 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
2324 | struct file *file_out, loff_t pos_out, size_t len) | |
2325 | { | |
2326 | struct inode *src = file_inode(file_in); | |
2327 | struct inode *dst = file_inode(file_out); | |
2328 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); | |
2329 | size_t olen = len, dst_max_i_size = 0; | |
2330 | size_t dst_osize; | |
2331 | int ret; | |
2332 | ||
2333 | if (file_in->f_path.mnt != file_out->f_path.mnt || | |
2334 | src->i_sb != dst->i_sb) | |
2335 | return -EXDEV; | |
2336 | ||
2337 | if (unlikely(f2fs_readonly(src->i_sb))) | |
2338 | return -EROFS; | |
2339 | ||
fe8494bf CY |
2340 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
2341 | return -EINVAL; | |
4dd6f977 JK |
2342 | |
2343 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) | |
2344 | return -EOPNOTSUPP; | |
2345 | ||
d95fd91c FL |
2346 | if (src == dst) { |
2347 | if (pos_in == pos_out) | |
2348 | return 0; | |
2349 | if (pos_out > pos_in && pos_out < pos_in + len) | |
2350 | return -EINVAL; | |
2351 | } | |
2352 | ||
4dd6f977 | 2353 | inode_lock(src); |
b2532c69 | 2354 | down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); |
20a3d61d | 2355 | if (src != dst) { |
bb06664a CY |
2356 | ret = -EBUSY; |
2357 | if (!inode_trylock(dst)) | |
2358 | goto out; | |
b2532c69 | 2359 | if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) { |
bb06664a | 2360 | inode_unlock(dst); |
20a3d61d CY |
2361 | goto out; |
2362 | } | |
2363 | } | |
4dd6f977 JK |
2364 | |
2365 | ret = -EINVAL; | |
2366 | if (pos_in + len > src->i_size || pos_in + len < pos_in) | |
2367 | goto out_unlock; | |
2368 | if (len == 0) | |
2369 | olen = len = src->i_size - pos_in; | |
2370 | if (pos_in + len == src->i_size) | |
2371 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; | |
2372 | if (len == 0) { | |
2373 | ret = 0; | |
2374 | goto out_unlock; | |
2375 | } | |
2376 | ||
2377 | dst_osize = dst->i_size; | |
2378 | if (pos_out + olen > dst->i_size) | |
2379 | dst_max_i_size = pos_out + olen; | |
2380 | ||
2381 | /* verify the end result is block aligned */ | |
2382 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || | |
2383 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || | |
2384 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) | |
2385 | goto out_unlock; | |
2386 | ||
2387 | ret = f2fs_convert_inline_inode(src); | |
2388 | if (ret) | |
2389 | goto out_unlock; | |
2390 | ||
2391 | ret = f2fs_convert_inline_inode(dst); | |
2392 | if (ret) | |
2393 | goto out_unlock; | |
2394 | ||
2395 | /* write out all dirty pages from offset */ | |
2396 | ret = filemap_write_and_wait_range(src->i_mapping, | |
2397 | pos_in, pos_in + len); | |
2398 | if (ret) | |
2399 | goto out_unlock; | |
2400 | ||
2401 | ret = filemap_write_and_wait_range(dst->i_mapping, | |
2402 | pos_out, pos_out + len); | |
2403 | if (ret) | |
2404 | goto out_unlock; | |
2405 | ||
2406 | f2fs_balance_fs(sbi, true); | |
2407 | f2fs_lock_op(sbi); | |
61e4da11 FL |
2408 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
2409 | pos_out >> F2FS_BLKSIZE_BITS, | |
2410 | len >> F2FS_BLKSIZE_BITS, false); | |
4dd6f977 JK |
2411 | |
2412 | if (!ret) { | |
2413 | if (dst_max_i_size) | |
2414 | f2fs_i_size_write(dst, dst_max_i_size); | |
2415 | else if (dst_osize != dst->i_size) | |
2416 | f2fs_i_size_write(dst, dst_osize); | |
2417 | } | |
2418 | f2fs_unlock_op(sbi); | |
2419 | out_unlock: | |
bb06664a | 2420 | if (src != dst) { |
b2532c69 | 2421 | up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]); |
4dd6f977 | 2422 | inode_unlock(dst); |
bb06664a | 2423 | } |
20a3d61d | 2424 | out: |
b2532c69 | 2425 | up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); |
4dd6f977 JK |
2426 | inode_unlock(src); |
2427 | return ret; | |
2428 | } | |
2429 | ||
2430 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) | |
2431 | { | |
2432 | struct f2fs_move_range range; | |
2433 | struct fd dst; | |
2434 | int err; | |
2435 | ||
2436 | if (!(filp->f_mode & FMODE_READ) || | |
2437 | !(filp->f_mode & FMODE_WRITE)) | |
2438 | return -EBADF; | |
2439 | ||
2440 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, | |
2441 | sizeof(range))) | |
2442 | return -EFAULT; | |
2443 | ||
2444 | dst = fdget(range.dst_fd); | |
2445 | if (!dst.file) | |
2446 | return -EBADF; | |
2447 | ||
2448 | if (!(dst.file->f_mode & FMODE_WRITE)) { | |
2449 | err = -EBADF; | |
2450 | goto err_out; | |
2451 | } | |
2452 | ||
2453 | err = mnt_want_write_file(filp); | |
2454 | if (err) | |
2455 | goto err_out; | |
2456 | ||
2457 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, | |
2458 | range.pos_out, range.len); | |
2459 | ||
2460 | mnt_drop_write_file(filp); | |
3cecfa5f KM |
2461 | if (err) |
2462 | goto err_out; | |
4dd6f977 JK |
2463 | |
2464 | if (copy_to_user((struct f2fs_move_range __user *)arg, | |
2465 | &range, sizeof(range))) | |
2466 | err = -EFAULT; | |
2467 | err_out: | |
2468 | fdput(dst); | |
2469 | return err; | |
2470 | } | |
2471 | ||
e066b83c JK |
2472 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
2473 | { | |
2474 | struct inode *inode = file_inode(filp); | |
2475 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2476 | struct sit_info *sm = SIT_I(sbi); | |
2477 | unsigned int start_segno = 0, end_segno = 0; | |
2478 | unsigned int dev_start_segno = 0, dev_end_segno = 0; | |
2479 | struct f2fs_flush_device range; | |
2480 | int ret; | |
2481 | ||
2482 | if (!capable(CAP_SYS_ADMIN)) | |
2483 | return -EPERM; | |
2484 | ||
2485 | if (f2fs_readonly(sbi->sb)) | |
2486 | return -EROFS; | |
2487 | ||
2488 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, | |
2489 | sizeof(range))) | |
2490 | return -EFAULT; | |
2491 | ||
2492 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || | |
2493 | sbi->segs_per_sec != 1) { | |
2494 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2495 | "Can't flush %u in %d for segs_per_sec %u != 1\n", | |
2496 | range.dev_num, sbi->s_ndevs, | |
2497 | sbi->segs_per_sec); | |
2498 | return -EINVAL; | |
2499 | } | |
2500 | ||
2501 | ret = mnt_want_write_file(filp); | |
2502 | if (ret) | |
2503 | return ret; | |
2504 | ||
2505 | if (range.dev_num != 0) | |
2506 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); | |
2507 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); | |
2508 | ||
2509 | start_segno = sm->last_victim[FLUSH_DEVICE]; | |
2510 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) | |
2511 | start_segno = dev_start_segno; | |
2512 | end_segno = min(start_segno + range.segments, dev_end_segno); | |
2513 | ||
2514 | while (start_segno < end_segno) { | |
2515 | if (!mutex_trylock(&sbi->gc_mutex)) { | |
2516 | ret = -EBUSY; | |
2517 | goto out; | |
2518 | } | |
2519 | sm->last_victim[GC_CB] = end_segno + 1; | |
2520 | sm->last_victim[GC_GREEDY] = end_segno + 1; | |
2521 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; | |
2522 | ret = f2fs_gc(sbi, true, true, start_segno); | |
2523 | if (ret == -EAGAIN) | |
2524 | ret = 0; | |
2525 | else if (ret < 0) | |
2526 | break; | |
2527 | start_segno++; | |
2528 | } | |
2529 | out: | |
2530 | mnt_drop_write_file(filp); | |
2531 | return ret; | |
2532 | } | |
2533 | ||
e65ef207 JK |
2534 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
2535 | { | |
2536 | struct inode *inode = file_inode(filp); | |
2537 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); | |
2538 | ||
2539 | /* Must validate to set it with SQLite behavior in Android. */ | |
2540 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; | |
2541 | ||
2542 | return put_user(sb_feature, (u32 __user *)arg); | |
2543 | } | |
e066b83c | 2544 | |
2c1d0305 CY |
2545 | #ifdef CONFIG_QUOTA |
2546 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) | |
2547 | { | |
2548 | struct inode *inode = file_inode(filp); | |
2549 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2550 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2551 | struct super_block *sb = sbi->sb; | |
2552 | struct dquot *transfer_to[MAXQUOTAS] = {}; | |
2553 | struct page *ipage; | |
2554 | kprojid_t kprojid; | |
2555 | int err; | |
2556 | ||
2557 | if (!f2fs_sb_has_project_quota(sb)) { | |
2558 | if (projid != F2FS_DEF_PROJID) | |
2559 | return -EOPNOTSUPP; | |
2560 | else | |
2561 | return 0; | |
2562 | } | |
2563 | ||
2564 | if (!f2fs_has_extra_attr(inode)) | |
2565 | return -EOPNOTSUPP; | |
2566 | ||
2567 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); | |
2568 | ||
2569 | if (projid_eq(kprojid, F2FS_I(inode)->i_projid)) | |
2570 | return 0; | |
2571 | ||
2572 | err = mnt_want_write_file(filp); | |
2573 | if (err) | |
2574 | return err; | |
2575 | ||
2576 | err = -EPERM; | |
2577 | inode_lock(inode); | |
2578 | ||
2579 | /* Is it quota file? Do not allow user to mess with it */ | |
2580 | if (IS_NOQUOTA(inode)) | |
2581 | goto out_unlock; | |
2582 | ||
4d57b86d | 2583 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2c1d0305 CY |
2584 | if (IS_ERR(ipage)) { |
2585 | err = PTR_ERR(ipage); | |
2586 | goto out_unlock; | |
2587 | } | |
2588 | ||
2589 | if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize, | |
2590 | i_projid)) { | |
2591 | err = -EOVERFLOW; | |
2592 | f2fs_put_page(ipage, 1); | |
2593 | goto out_unlock; | |
2594 | } | |
2595 | f2fs_put_page(ipage, 1); | |
2596 | ||
c22aecd7 CY |
2597 | err = dquot_initialize(inode); |
2598 | if (err) | |
2599 | goto out_unlock; | |
2c1d0305 CY |
2600 | |
2601 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); | |
2602 | if (!IS_ERR(transfer_to[PRJQUOTA])) { | |
2603 | err = __dquot_transfer(inode, transfer_to); | |
2604 | dqput(transfer_to[PRJQUOTA]); | |
2605 | if (err) | |
2606 | goto out_dirty; | |
2607 | } | |
2608 | ||
2609 | F2FS_I(inode)->i_projid = kprojid; | |
2610 | inode->i_ctime = current_time(inode); | |
2611 | out_dirty: | |
2612 | f2fs_mark_inode_dirty_sync(inode, true); | |
2613 | out_unlock: | |
2614 | inode_unlock(inode); | |
2615 | mnt_drop_write_file(filp); | |
2616 | return err; | |
2617 | } | |
2618 | #else | |
2619 | static int f2fs_ioc_setproject(struct file *filp, __u32 projid) | |
2620 | { | |
2621 | if (projid != F2FS_DEF_PROJID) | |
2622 | return -EOPNOTSUPP; | |
2623 | return 0; | |
2624 | } | |
2625 | #endif | |
2626 | ||
2627 | /* Transfer internal flags to xflags */ | |
2628 | static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags) | |
2629 | { | |
2630 | __u32 xflags = 0; | |
2631 | ||
59c84408 | 2632 | if (iflags & F2FS_SYNC_FL) |
2c1d0305 | 2633 | xflags |= FS_XFLAG_SYNC; |
59c84408 | 2634 | if (iflags & F2FS_IMMUTABLE_FL) |
2c1d0305 | 2635 | xflags |= FS_XFLAG_IMMUTABLE; |
59c84408 | 2636 | if (iflags & F2FS_APPEND_FL) |
2c1d0305 | 2637 | xflags |= FS_XFLAG_APPEND; |
59c84408 | 2638 | if (iflags & F2FS_NODUMP_FL) |
2c1d0305 | 2639 | xflags |= FS_XFLAG_NODUMP; |
59c84408 | 2640 | if (iflags & F2FS_NOATIME_FL) |
2c1d0305 | 2641 | xflags |= FS_XFLAG_NOATIME; |
59c84408 | 2642 | if (iflags & F2FS_PROJINHERIT_FL) |
2c1d0305 CY |
2643 | xflags |= FS_XFLAG_PROJINHERIT; |
2644 | return xflags; | |
2645 | } | |
2646 | ||
2647 | #define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ | |
2648 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ | |
2649 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) | |
2650 | ||
2c1d0305 CY |
2651 | /* Transfer xflags flags to internal */ |
2652 | static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags) | |
2653 | { | |
2654 | unsigned long iflags = 0; | |
2655 | ||
2656 | if (xflags & FS_XFLAG_SYNC) | |
59c84408 | 2657 | iflags |= F2FS_SYNC_FL; |
2c1d0305 | 2658 | if (xflags & FS_XFLAG_IMMUTABLE) |
59c84408 | 2659 | iflags |= F2FS_IMMUTABLE_FL; |
2c1d0305 | 2660 | if (xflags & FS_XFLAG_APPEND) |
59c84408 | 2661 | iflags |= F2FS_APPEND_FL; |
2c1d0305 | 2662 | if (xflags & FS_XFLAG_NODUMP) |
59c84408 | 2663 | iflags |= F2FS_NODUMP_FL; |
2c1d0305 | 2664 | if (xflags & FS_XFLAG_NOATIME) |
59c84408 | 2665 | iflags |= F2FS_NOATIME_FL; |
2c1d0305 | 2666 | if (xflags & FS_XFLAG_PROJINHERIT) |
59c84408 | 2667 | iflags |= F2FS_PROJINHERIT_FL; |
2c1d0305 CY |
2668 | |
2669 | return iflags; | |
2670 | } | |
2671 | ||
2672 | static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) | |
2673 | { | |
2674 | struct inode *inode = file_inode(filp); | |
2675 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2676 | struct fsxattr fa; | |
2677 | ||
2678 | memset(&fa, 0, sizeof(struct fsxattr)); | |
2679 | fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags & | |
c807a7cb | 2680 | F2FS_FL_USER_VISIBLE); |
2c1d0305 CY |
2681 | |
2682 | if (f2fs_sb_has_project_quota(inode->i_sb)) | |
2683 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, | |
2684 | fi->i_projid); | |
2685 | ||
2686 | if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) | |
2687 | return -EFAULT; | |
2688 | return 0; | |
2689 | } | |
2690 | ||
2691 | static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) | |
2692 | { | |
2693 | struct inode *inode = file_inode(filp); | |
2694 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2695 | struct fsxattr fa; | |
2696 | unsigned int flags; | |
2697 | int err; | |
2698 | ||
2699 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa))) | |
2700 | return -EFAULT; | |
2701 | ||
2702 | /* Make sure caller has proper permission */ | |
2703 | if (!inode_owner_or_capable(inode)) | |
2704 | return -EACCES; | |
2705 | ||
2706 | if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS) | |
2707 | return -EOPNOTSUPP; | |
2708 | ||
2709 | flags = f2fs_xflags_to_iflags(fa.fsx_xflags); | |
2710 | if (f2fs_mask_flags(inode->i_mode, flags) != flags) | |
2711 | return -EOPNOTSUPP; | |
2712 | ||
2713 | err = mnt_want_write_file(filp); | |
2714 | if (err) | |
2715 | return err; | |
2716 | ||
2717 | inode_lock(inode); | |
2718 | flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) | | |
2719 | (flags & F2FS_FL_XFLAG_VISIBLE); | |
2720 | err = __f2fs_ioc_setflags(inode, flags); | |
2721 | inode_unlock(inode); | |
2722 | mnt_drop_write_file(filp); | |
2723 | if (err) | |
2724 | return err; | |
2725 | ||
2726 | err = f2fs_ioc_setproject(filp, fa.fsx_projid); | |
2727 | if (err) | |
2728 | return err; | |
2729 | ||
2730 | return 0; | |
2731 | } | |
e066b83c | 2732 | |
1ad71a27 JK |
2733 | int f2fs_pin_file_control(struct inode *inode, bool inc) |
2734 | { | |
2735 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2736 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2737 | ||
2738 | /* Use i_gc_failures for normal file as a risk signal. */ | |
2739 | if (inc) | |
2ef79ecb CY |
2740 | f2fs_i_gc_failures_write(inode, |
2741 | fi->i_gc_failures[GC_FAILURE_PIN] + 1); | |
1ad71a27 | 2742 | |
2ef79ecb | 2743 | if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) { |
1ad71a27 JK |
2744 | f2fs_msg(sbi->sb, KERN_WARNING, |
2745 | "%s: Enable GC = ino %lx after %x GC trials\n", | |
2ef79ecb CY |
2746 | __func__, inode->i_ino, |
2747 | fi->i_gc_failures[GC_FAILURE_PIN]); | |
1ad71a27 JK |
2748 | clear_inode_flag(inode, FI_PIN_FILE); |
2749 | return -EAGAIN; | |
2750 | } | |
2751 | return 0; | |
2752 | } | |
2753 | ||
2754 | static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg) | |
2755 | { | |
2756 | struct inode *inode = file_inode(filp); | |
2757 | __u32 pin; | |
2758 | int ret = 0; | |
2759 | ||
2760 | if (!inode_owner_or_capable(inode)) | |
2761 | return -EACCES; | |
2762 | ||
2763 | if (get_user(pin, (__u32 __user *)arg)) | |
2764 | return -EFAULT; | |
2765 | ||
2766 | if (!S_ISREG(inode->i_mode)) | |
2767 | return -EINVAL; | |
2768 | ||
2769 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
2770 | return -EROFS; | |
2771 | ||
2772 | ret = mnt_want_write_file(filp); | |
2773 | if (ret) | |
2774 | return ret; | |
2775 | ||
2776 | inode_lock(inode); | |
2777 | ||
4d57b86d | 2778 | if (f2fs_should_update_outplace(inode, NULL)) { |
bb9e3bb8 CY |
2779 | ret = -EINVAL; |
2780 | goto out; | |
2781 | } | |
2782 | ||
1ad71a27 JK |
2783 | if (!pin) { |
2784 | clear_inode_flag(inode, FI_PIN_FILE); | |
2ef79ecb | 2785 | F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = 1; |
1ad71a27 JK |
2786 | goto done; |
2787 | } | |
2788 | ||
2789 | if (f2fs_pin_file_control(inode, false)) { | |
2790 | ret = -EAGAIN; | |
2791 | goto out; | |
2792 | } | |
2793 | ret = f2fs_convert_inline_inode(inode); | |
2794 | if (ret) | |
2795 | goto out; | |
2796 | ||
2797 | set_inode_flag(inode, FI_PIN_FILE); | |
2ef79ecb | 2798 | ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
1ad71a27 JK |
2799 | done: |
2800 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
2801 | out: | |
2802 | inode_unlock(inode); | |
2803 | mnt_drop_write_file(filp); | |
2804 | return ret; | |
2805 | } | |
2806 | ||
2807 | static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg) | |
2808 | { | |
2809 | struct inode *inode = file_inode(filp); | |
2810 | __u32 pin = 0; | |
2811 | ||
2812 | if (is_inode_flag_set(inode, FI_PIN_FILE)) | |
2ef79ecb | 2813 | pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
1ad71a27 JK |
2814 | return put_user(pin, (u32 __user *)arg); |
2815 | } | |
2816 | ||
c4020b2d CY |
2817 | int f2fs_precache_extents(struct inode *inode) |
2818 | { | |
2819 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
2820 | struct f2fs_map_blocks map; | |
2821 | pgoff_t m_next_extent; | |
2822 | loff_t end; | |
2823 | int err; | |
2824 | ||
2825 | if (is_inode_flag_set(inode, FI_NO_EXTENT)) | |
2826 | return -EOPNOTSUPP; | |
2827 | ||
2828 | map.m_lblk = 0; | |
2829 | map.m_next_pgofs = NULL; | |
2830 | map.m_next_extent = &m_next_extent; | |
2831 | map.m_seg_type = NO_CHECK_TYPE; | |
2832 | end = F2FS_I_SB(inode)->max_file_blocks; | |
2833 | ||
2834 | while (map.m_lblk < end) { | |
2835 | map.m_len = end - map.m_lblk; | |
2836 | ||
b2532c69 | 2837 | down_write(&fi->i_gc_rwsem[WRITE]); |
c4020b2d | 2838 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); |
b2532c69 | 2839 | up_write(&fi->i_gc_rwsem[WRITE]); |
c4020b2d CY |
2840 | if (err) |
2841 | return err; | |
2842 | ||
2843 | map.m_lblk = m_next_extent; | |
2844 | } | |
2845 | ||
2846 | return err; | |
2847 | } | |
2848 | ||
2849 | static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg) | |
2850 | { | |
2851 | return f2fs_precache_extents(file_inode(filp)); | |
2852 | } | |
2853 | ||
52656e6c JK |
2854 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
2855 | { | |
1f227a3e JK |
2856 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp))))) |
2857 | return -EIO; | |
2858 | ||
52656e6c JK |
2859 | switch (cmd) { |
2860 | case F2FS_IOC_GETFLAGS: | |
2861 | return f2fs_ioc_getflags(filp, arg); | |
2862 | case F2FS_IOC_SETFLAGS: | |
2863 | return f2fs_ioc_setflags(filp, arg); | |
d49f3e89 CY |
2864 | case F2FS_IOC_GETVERSION: |
2865 | return f2fs_ioc_getversion(filp, arg); | |
88b88a66 JK |
2866 | case F2FS_IOC_START_ATOMIC_WRITE: |
2867 | return f2fs_ioc_start_atomic_write(filp); | |
2868 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2869 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
2870 | case F2FS_IOC_START_VOLATILE_WRITE: |
2871 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
2872 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
2873 | return f2fs_ioc_release_volatile_write(filp); | |
2874 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
2875 | return f2fs_ioc_abort_volatile_write(filp); | |
1abff93d JK |
2876 | case F2FS_IOC_SHUTDOWN: |
2877 | return f2fs_ioc_shutdown(filp, arg); | |
52656e6c JK |
2878 | case FITRIM: |
2879 | return f2fs_ioc_fitrim(filp, arg); | |
f424f664 JK |
2880 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
2881 | return f2fs_ioc_set_encryption_policy(filp, arg); | |
2882 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
2883 | return f2fs_ioc_get_encryption_policy(filp, arg); | |
2884 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
2885 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); | |
c1c1b583 CY |
2886 | case F2FS_IOC_GARBAGE_COLLECT: |
2887 | return f2fs_ioc_gc(filp, arg); | |
34dc77ad JK |
2888 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
2889 | return f2fs_ioc_gc_range(filp, arg); | |
456b88e4 | 2890 | case F2FS_IOC_WRITE_CHECKPOINT: |
4d57b86d | 2891 | return f2fs_ioc_f2fs_write_checkpoint(filp, arg); |
d323d005 CY |
2892 | case F2FS_IOC_DEFRAGMENT: |
2893 | return f2fs_ioc_defragment(filp, arg); | |
4dd6f977 JK |
2894 | case F2FS_IOC_MOVE_RANGE: |
2895 | return f2fs_ioc_move_range(filp, arg); | |
e066b83c JK |
2896 | case F2FS_IOC_FLUSH_DEVICE: |
2897 | return f2fs_ioc_flush_device(filp, arg); | |
e65ef207 JK |
2898 | case F2FS_IOC_GET_FEATURES: |
2899 | return f2fs_ioc_get_features(filp, arg); | |
2c1d0305 CY |
2900 | case F2FS_IOC_FSGETXATTR: |
2901 | return f2fs_ioc_fsgetxattr(filp, arg); | |
2902 | case F2FS_IOC_FSSETXATTR: | |
2903 | return f2fs_ioc_fssetxattr(filp, arg); | |
1ad71a27 JK |
2904 | case F2FS_IOC_GET_PIN_FILE: |
2905 | return f2fs_ioc_get_pin_file(filp, arg); | |
2906 | case F2FS_IOC_SET_PIN_FILE: | |
2907 | return f2fs_ioc_set_pin_file(filp, arg); | |
c4020b2d CY |
2908 | case F2FS_IOC_PRECACHE_EXTENTS: |
2909 | return f2fs_ioc_precache_extents(filp, arg); | |
fbfa2cc5 JK |
2910 | default: |
2911 | return -ENOTTY; | |
2912 | } | |
2913 | } | |
2914 | ||
fcc85a4d JK |
2915 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
2916 | { | |
b439b103 JK |
2917 | struct file *file = iocb->ki_filp; |
2918 | struct inode *inode = file_inode(file); | |
2919 | ssize_t ret; | |
fcc85a4d | 2920 | |
1f227a3e JK |
2921 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
2922 | return -EIO; | |
2923 | ||
b91050a8 HL |
2924 | if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT)) |
2925 | return -EINVAL; | |
2926 | ||
2927 | if (!inode_trylock(inode)) { | |
2928 | if (iocb->ki_flags & IOCB_NOWAIT) | |
2929 | return -EAGAIN; | |
2930 | inode_lock(inode); | |
2931 | } | |
2932 | ||
b439b103 JK |
2933 | ret = generic_write_checks(iocb, from); |
2934 | if (ret > 0) { | |
dc7a10dd JK |
2935 | bool preallocated = false; |
2936 | size_t target_size = 0; | |
dc91de78 | 2937 | int err; |
a7de6086 | 2938 | |
dc91de78 JK |
2939 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
2940 | set_inode_flag(inode, FI_NO_PREALLOC); | |
a7de6086 | 2941 | |
b91050a8 HL |
2942 | if ((iocb->ki_flags & IOCB_NOWAIT) && |
2943 | (iocb->ki_flags & IOCB_DIRECT)) { | |
2944 | if (!f2fs_overwrite_io(inode, iocb->ki_pos, | |
2945 | iov_iter_count(from)) || | |
2946 | f2fs_has_inline_data(inode) || | |
2947 | f2fs_force_buffered_io(inode, WRITE)) { | |
cba41be0 YH |
2948 | clear_inode_flag(inode, |
2949 | FI_NO_PREALLOC); | |
b91050a8 HL |
2950 | inode_unlock(inode); |
2951 | return -EAGAIN; | |
2952 | } | |
2953 | ||
2954 | } else { | |
dc7a10dd JK |
2955 | preallocated = true; |
2956 | target_size = iocb->ki_pos + iov_iter_count(from); | |
2957 | ||
b91050a8 HL |
2958 | err = f2fs_preallocate_blocks(iocb, from); |
2959 | if (err) { | |
2960 | clear_inode_flag(inode, FI_NO_PREALLOC); | |
2961 | inode_unlock(inode); | |
2962 | return err; | |
2963 | } | |
9dfa1baf | 2964 | } |
a7de6086 | 2965 | ret = __generic_file_write_iter(iocb, from); |
dc91de78 | 2966 | clear_inode_flag(inode, FI_NO_PREALLOC); |
b0af6d49 | 2967 | |
dc7a10dd JK |
2968 | /* if we couldn't write data, we should deallocate blocks. */ |
2969 | if (preallocated && i_size_read(inode) < target_size) | |
2970 | f2fs_truncate(inode); | |
2971 | ||
b0af6d49 CY |
2972 | if (ret > 0) |
2973 | f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); | |
b439b103 JK |
2974 | } |
2975 | inode_unlock(inode); | |
2976 | ||
e2592217 CH |
2977 | if (ret > 0) |
2978 | ret = generic_write_sync(iocb, ret); | |
b439b103 | 2979 | return ret; |
fcc85a4d JK |
2980 | } |
2981 | ||
e9750824 NJ |
2982 | #ifdef CONFIG_COMPAT |
2983 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2984 | { | |
2985 | switch (cmd) { | |
2986 | case F2FS_IOC32_GETFLAGS: | |
2987 | cmd = F2FS_IOC_GETFLAGS; | |
2988 | break; | |
2989 | case F2FS_IOC32_SETFLAGS: | |
2990 | cmd = F2FS_IOC_SETFLAGS; | |
2991 | break; | |
04ef4b62 CY |
2992 | case F2FS_IOC32_GETVERSION: |
2993 | cmd = F2FS_IOC_GETVERSION; | |
2994 | break; | |
2995 | case F2FS_IOC_START_ATOMIC_WRITE: | |
2996 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
2997 | case F2FS_IOC_START_VOLATILE_WRITE: | |
2998 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: | |
2999 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
3000 | case F2FS_IOC_SHUTDOWN: | |
3001 | case F2FS_IOC_SET_ENCRYPTION_POLICY: | |
3002 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: | |
3003 | case F2FS_IOC_GET_ENCRYPTION_POLICY: | |
3004 | case F2FS_IOC_GARBAGE_COLLECT: | |
34dc77ad | 3005 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
04ef4b62 CY |
3006 | case F2FS_IOC_WRITE_CHECKPOINT: |
3007 | case F2FS_IOC_DEFRAGMENT: | |
4dd6f977 | 3008 | case F2FS_IOC_MOVE_RANGE: |
e066b83c | 3009 | case F2FS_IOC_FLUSH_DEVICE: |
e65ef207 | 3010 | case F2FS_IOC_GET_FEATURES: |
2c1d0305 CY |
3011 | case F2FS_IOC_FSGETXATTR: |
3012 | case F2FS_IOC_FSSETXATTR: | |
1ad71a27 JK |
3013 | case F2FS_IOC_GET_PIN_FILE: |
3014 | case F2FS_IOC_SET_PIN_FILE: | |
c4020b2d | 3015 | case F2FS_IOC_PRECACHE_EXTENTS: |
4dd6f977 | 3016 | break; |
e9750824 NJ |
3017 | default: |
3018 | return -ENOIOCTLCMD; | |
3019 | } | |
3020 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
3021 | } | |
3022 | #endif | |
3023 | ||
fbfa2cc5 | 3024 | const struct file_operations f2fs_file_operations = { |
267378d4 | 3025 | .llseek = f2fs_llseek, |
aad4f8bb | 3026 | .read_iter = generic_file_read_iter, |
fcc85a4d JK |
3027 | .write_iter = f2fs_file_write_iter, |
3028 | .open = f2fs_file_open, | |
12662234 | 3029 | .release = f2fs_release_file, |
fbfa2cc5 | 3030 | .mmap = f2fs_file_mmap, |
7a10f017 | 3031 | .flush = f2fs_file_flush, |
fbfa2cc5 JK |
3032 | .fsync = f2fs_sync_file, |
3033 | .fallocate = f2fs_fallocate, | |
3034 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
3035 | #ifdef CONFIG_COMPAT |
3036 | .compat_ioctl = f2fs_compat_ioctl, | |
3037 | #endif | |
fbfa2cc5 | 3038 | .splice_read = generic_file_splice_read, |
8d020765 | 3039 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 3040 | }; |