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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> |
fbfa2cc5 JK |
23 | |
24 | #include "f2fs.h" | |
25 | #include "node.h" | |
26 | #include "segment.h" | |
27 | #include "xattr.h" | |
28 | #include "acl.h" | |
db9f7c1a | 29 | #include "trace.h" |
a2a4a7e4 | 30 | #include <trace/events/f2fs.h> |
fbfa2cc5 JK |
31 | |
32 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, | |
33 | struct vm_fault *vmf) | |
34 | { | |
35 | struct page *page = vmf->page; | |
6131ffaa | 36 | struct inode *inode = file_inode(vma->vm_file); |
4081363f | 37 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 | 38 | struct dnode_of_data dn; |
e479556b | 39 | int err; |
fbfa2cc5 JK |
40 | |
41 | f2fs_balance_fs(sbi); | |
42 | ||
43 | sb_start_pagefault(inode->i_sb); | |
b3d208f9 JK |
44 | |
45 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); | |
b067ba1f | 46 | |
fbfa2cc5 | 47 | /* block allocation */ |
e479556b | 48 | f2fs_lock_op(sbi); |
b3d208f9 | 49 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 50 | err = f2fs_reserve_block(&dn, page->index); |
9ba69cf9 JK |
51 | if (err) { |
52 | f2fs_unlock_op(sbi); | |
b600965c | 53 | goto out; |
9ba69cf9 JK |
54 | } |
55 | f2fs_put_dnode(&dn); | |
56 | f2fs_unlock_op(sbi); | |
fbfa2cc5 | 57 | |
9851e6e1 | 58 | file_update_time(vma->vm_file); |
fbfa2cc5 | 59 | lock_page(page); |
6bacf52f | 60 | if (unlikely(page->mapping != inode->i_mapping || |
9851e6e1 | 61 | page_offset(page) > i_size_read(inode) || |
6bacf52f | 62 | !PageUptodate(page))) { |
fbfa2cc5 JK |
63 | unlock_page(page); |
64 | err = -EFAULT; | |
65 | goto out; | |
66 | } | |
67 | ||
68 | /* | |
69 | * check to see if the page is mapped already (no holes) | |
70 | */ | |
71 | if (PageMappedToDisk(page)) | |
9851e6e1 | 72 | goto mapped; |
fbfa2cc5 JK |
73 | |
74 | /* page is wholly or partially inside EOF */ | |
75 | if (((page->index + 1) << PAGE_CACHE_SHIFT) > i_size_read(inode)) { | |
76 | unsigned offset; | |
77 | offset = i_size_read(inode) & ~PAGE_CACHE_MASK; | |
78 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); | |
79 | } | |
80 | set_page_dirty(page); | |
81 | SetPageUptodate(page); | |
82 | ||
e943a10d | 83 | trace_f2fs_vm_page_mkwrite(page, DATA); |
9851e6e1 NJ |
84 | mapped: |
85 | /* fill the page */ | |
3cb5ad15 | 86 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 JK |
87 | out: |
88 | sb_end_pagefault(inode->i_sb); | |
89 | return block_page_mkwrite_return(err); | |
90 | } | |
91 | ||
92 | static const struct vm_operations_struct f2fs_file_vm_ops = { | |
692bb55d | 93 | .fault = filemap_fault, |
f1820361 | 94 | .map_pages = filemap_map_pages, |
692bb55d JK |
95 | .page_mkwrite = f2fs_vm_page_mkwrite, |
96 | .remap_pages = generic_file_remap_pages, | |
fbfa2cc5 JK |
97 | }; |
98 | ||
354a3399 JK |
99 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
100 | { | |
101 | struct dentry *dentry; | |
102 | ||
103 | inode = igrab(inode); | |
104 | dentry = d_find_any_alias(inode); | |
105 | iput(inode); | |
106 | if (!dentry) | |
107 | return 0; | |
108 | ||
f0947e5c JK |
109 | if (update_dent_inode(inode, &dentry->d_name)) { |
110 | dput(dentry); | |
111 | return 0; | |
112 | } | |
354a3399 | 113 | |
f0947e5c JK |
114 | *pino = parent_ino(dentry); |
115 | dput(dentry); | |
354a3399 JK |
116 | return 1; |
117 | } | |
118 | ||
9d1589ef CY |
119 | static inline bool need_do_checkpoint(struct inode *inode) |
120 | { | |
4081363f | 121 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9d1589ef CY |
122 | bool need_cp = false; |
123 | ||
124 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) | |
125 | need_cp = true; | |
126 | else if (file_wrong_pino(inode)) | |
127 | need_cp = true; | |
128 | else if (!space_for_roll_forward(sbi)) | |
129 | need_cp = true; | |
130 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) | |
131 | need_cp = true; | |
132 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) | |
133 | need_cp = true; | |
d5053a34 JK |
134 | else if (test_opt(sbi, FASTBOOT)) |
135 | need_cp = true; | |
a344b9fd JK |
136 | else if (sbi->active_logs == 2) |
137 | need_cp = true; | |
9d1589ef CY |
138 | |
139 | return need_cp; | |
140 | } | |
141 | ||
9c7bb702 CL |
142 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
143 | { | |
144 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); | |
145 | bool ret = false; | |
146 | /* But we need to avoid that there are some inode updates */ | |
147 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) | |
148 | ret = true; | |
149 | f2fs_put_page(i, 0); | |
150 | return ret; | |
151 | } | |
152 | ||
51455b19 CL |
153 | static void try_to_fix_pino(struct inode *inode) |
154 | { | |
155 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
156 | nid_t pino; | |
157 | ||
158 | down_write(&fi->i_sem); | |
159 | fi->xattr_ver = 0; | |
160 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && | |
161 | get_parent_ino(inode, &pino)) { | |
162 | fi->i_pino = pino; | |
163 | file_got_pino(inode); | |
164 | up_write(&fi->i_sem); | |
165 | ||
166 | mark_inode_dirty_sync(inode); | |
167 | f2fs_write_inode(inode, NULL); | |
168 | } else { | |
169 | up_write(&fi->i_sem); | |
170 | } | |
171 | } | |
172 | ||
fbfa2cc5 JK |
173 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
174 | { | |
175 | struct inode *inode = file->f_mapping->host; | |
d928bfbf | 176 | struct f2fs_inode_info *fi = F2FS_I(inode); |
4081363f | 177 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2403c155 | 178 | nid_t ino = inode->i_ino; |
fbfa2cc5 JK |
179 | int ret = 0; |
180 | bool need_cp = false; | |
181 | struct writeback_control wbc = { | |
c81bf1c8 | 182 | .sync_mode = WB_SYNC_ALL, |
fbfa2cc5 JK |
183 | .nr_to_write = LONG_MAX, |
184 | .for_reclaim = 0, | |
185 | }; | |
186 | ||
6bacf52f | 187 | if (unlikely(f2fs_readonly(inode->i_sb))) |
1fa95b0b NJ |
188 | return 0; |
189 | ||
a2a4a7e4 | 190 | trace_f2fs_sync_file_enter(inode); |
ea1aa12c JK |
191 | |
192 | /* if fdatasync is triggered, let's do in-place-update */ | |
c1ce1b02 | 193 | if (get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
ea1aa12c | 194 | set_inode_flag(fi, FI_NEED_IPU); |
fbfa2cc5 | 195 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
c1ce1b02 JK |
196 | clear_inode_flag(fi, FI_NEED_IPU); |
197 | ||
a2a4a7e4 NJ |
198 | if (ret) { |
199 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); | |
fbfa2cc5 | 200 | return ret; |
a2a4a7e4 | 201 | } |
fbfa2cc5 | 202 | |
9c7bb702 CL |
203 | /* if the inode is dirty, let's recover all the time */ |
204 | if (!datasync && is_inode_flag_set(fi, FI_DIRTY_INODE)) { | |
205 | update_inode_page(inode); | |
206 | goto go_write; | |
207 | } | |
208 | ||
6d99ba41 JK |
209 | /* |
210 | * if there is no written data, don't waste time to write recovery info. | |
211 | */ | |
212 | if (!is_inode_flag_set(fi, FI_APPEND_WRITE) && | |
2403c155 | 213 | !exist_written_data(sbi, ino, APPEND_INO)) { |
19c9c466 | 214 | |
9c7bb702 CL |
215 | /* it may call write_inode just prior to fsync */ |
216 | if (need_inode_page_update(sbi, ino)) | |
19c9c466 | 217 | goto go_write; |
19c9c466 | 218 | |
6d99ba41 | 219 | if (is_inode_flag_set(fi, FI_UPDATE_WRITE) || |
2403c155 | 220 | exist_written_data(sbi, ino, UPDATE_INO)) |
6d99ba41 JK |
221 | goto flush_out; |
222 | goto out; | |
223 | } | |
19c9c466 | 224 | go_write: |
7d82db83 JK |
225 | /* guarantee free sections for fsync */ |
226 | f2fs_balance_fs(sbi); | |
227 | ||
e5d2385e JK |
228 | /* |
229 | * Both of fdatasync() and fsync() are able to be recovered from | |
230 | * sudden-power-off. | |
231 | */ | |
9d1589ef CY |
232 | down_read(&fi->i_sem); |
233 | need_cp = need_do_checkpoint(inode); | |
d928bfbf JK |
234 | up_read(&fi->i_sem); |
235 | ||
fbfa2cc5 JK |
236 | if (need_cp) { |
237 | /* all the dirty node pages should be flushed for POR */ | |
238 | ret = f2fs_sync_fs(inode->i_sb, 1); | |
d928bfbf | 239 | |
51455b19 CL |
240 | /* |
241 | * We've secured consistency through sync_fs. Following pino | |
242 | * will be used only for fsynced inodes after checkpoint. | |
243 | */ | |
244 | try_to_fix_pino(inode); | |
245 | goto out; | |
246 | } | |
88bd02c9 | 247 | sync_nodes: |
51455b19 CL |
248 | sync_node_pages(sbi, ino, &wbc); |
249 | ||
250 | if (need_inode_block_update(sbi, ino)) { | |
251 | mark_inode_dirty_sync(inode); | |
252 | f2fs_write_inode(inode, NULL); | |
253 | goto sync_nodes; | |
fbfa2cc5 | 254 | } |
51455b19 CL |
255 | |
256 | ret = wait_on_node_pages_writeback(sbi, ino); | |
257 | if (ret) | |
258 | goto out; | |
259 | ||
260 | /* once recovery info is written, don't need to tack this */ | |
261 | remove_dirty_inode(sbi, ino, APPEND_INO); | |
262 | clear_inode_flag(fi, FI_APPEND_WRITE); | |
263 | flush_out: | |
264 | remove_dirty_inode(sbi, ino, UPDATE_INO); | |
265 | clear_inode_flag(fi, FI_UPDATE_WRITE); | |
266 | ret = f2fs_issue_flush(sbi); | |
fbfa2cc5 | 267 | out: |
a2a4a7e4 | 268 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
db9f7c1a | 269 | f2fs_trace_ios(NULL, NULL, 1); |
fbfa2cc5 JK |
270 | return ret; |
271 | } | |
272 | ||
7f7670fe JK |
273 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
274 | pgoff_t pgofs, int whence) | |
275 | { | |
276 | struct pagevec pvec; | |
277 | int nr_pages; | |
278 | ||
279 | if (whence != SEEK_DATA) | |
280 | return 0; | |
281 | ||
282 | /* find first dirty page index */ | |
283 | pagevec_init(&pvec, 0); | |
65b85ccc JK |
284 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
285 | PAGECACHE_TAG_DIRTY, 1); | |
286 | pgofs = nr_pages ? pvec.pages[0]->index : LONG_MAX; | |
7f7670fe JK |
287 | pagevec_release(&pvec); |
288 | return pgofs; | |
289 | } | |
290 | ||
291 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, | |
292 | int whence) | |
293 | { | |
294 | switch (whence) { | |
295 | case SEEK_DATA: | |
296 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || | |
297 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) | |
298 | return true; | |
299 | break; | |
300 | case SEEK_HOLE: | |
301 | if (blkaddr == NULL_ADDR) | |
302 | return true; | |
303 | break; | |
304 | } | |
305 | return false; | |
306 | } | |
307 | ||
267378d4 CY |
308 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
309 | { | |
310 | struct inode *inode = file->f_mapping->host; | |
311 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
312 | struct dnode_of_data dn; | |
7f7670fe JK |
313 | pgoff_t pgofs, end_offset, dirty; |
314 | loff_t data_ofs = offset; | |
315 | loff_t isize; | |
267378d4 CY |
316 | int err = 0; |
317 | ||
318 | mutex_lock(&inode->i_mutex); | |
319 | ||
320 | isize = i_size_read(inode); | |
321 | if (offset >= isize) | |
322 | goto fail; | |
323 | ||
324 | /* handle inline data case */ | |
622f28ae | 325 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
267378d4 CY |
326 | if (whence == SEEK_HOLE) |
327 | data_ofs = isize; | |
328 | goto found; | |
329 | } | |
330 | ||
331 | pgofs = (pgoff_t)(offset >> PAGE_CACHE_SHIFT); | |
332 | ||
7f7670fe JK |
333 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
334 | ||
267378d4 CY |
335 | for (; data_ofs < isize; data_ofs = pgofs << PAGE_CACHE_SHIFT) { |
336 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
337 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); | |
338 | if (err && err != -ENOENT) { | |
339 | goto fail; | |
340 | } else if (err == -ENOENT) { | |
e1c42045 | 341 | /* direct node does not exists */ |
267378d4 CY |
342 | if (whence == SEEK_DATA) { |
343 | pgofs = PGOFS_OF_NEXT_DNODE(pgofs, | |
344 | F2FS_I(inode)); | |
345 | continue; | |
346 | } else { | |
347 | goto found; | |
348 | } | |
349 | } | |
350 | ||
6b2920a5 | 351 | end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
267378d4 CY |
352 | |
353 | /* find data/hole in dnode block */ | |
354 | for (; dn.ofs_in_node < end_offset; | |
355 | dn.ofs_in_node++, pgofs++, | |
356 | data_ofs = pgofs << PAGE_CACHE_SHIFT) { | |
357 | block_t blkaddr; | |
358 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); | |
359 | ||
7f7670fe | 360 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
267378d4 CY |
361 | f2fs_put_dnode(&dn); |
362 | goto found; | |
363 | } | |
364 | } | |
365 | f2fs_put_dnode(&dn); | |
366 | } | |
367 | ||
368 | if (whence == SEEK_DATA) | |
369 | goto fail; | |
267378d4 | 370 | found: |
fe369bc8 JK |
371 | if (whence == SEEK_HOLE && data_ofs > isize) |
372 | data_ofs = isize; | |
267378d4 CY |
373 | mutex_unlock(&inode->i_mutex); |
374 | return vfs_setpos(file, data_ofs, maxbytes); | |
375 | fail: | |
376 | mutex_unlock(&inode->i_mutex); | |
377 | return -ENXIO; | |
378 | } | |
379 | ||
380 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) | |
381 | { | |
382 | struct inode *inode = file->f_mapping->host; | |
383 | loff_t maxbytes = inode->i_sb->s_maxbytes; | |
384 | ||
385 | switch (whence) { | |
386 | case SEEK_SET: | |
387 | case SEEK_CUR: | |
388 | case SEEK_END: | |
389 | return generic_file_llseek_size(file, offset, whence, | |
390 | maxbytes, i_size_read(inode)); | |
391 | case SEEK_DATA: | |
392 | case SEEK_HOLE: | |
0b4c5afd JK |
393 | if (offset < 0) |
394 | return -ENXIO; | |
267378d4 CY |
395 | return f2fs_seek_block(file, offset, whence); |
396 | } | |
397 | ||
398 | return -EINVAL; | |
399 | } | |
400 | ||
fbfa2cc5 JK |
401 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
402 | { | |
b3d208f9 JK |
403 | struct inode *inode = file_inode(file); |
404 | ||
405 | /* we don't need to use inline_data strictly */ | |
406 | if (f2fs_has_inline_data(inode)) { | |
407 | int err = f2fs_convert_inline_inode(inode); | |
408 | if (err) | |
409 | return err; | |
410 | } | |
411 | ||
fbfa2cc5 JK |
412 | file_accessed(file); |
413 | vma->vm_ops = &f2fs_file_vm_ops; | |
414 | return 0; | |
415 | } | |
416 | ||
b292dcab | 417 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
fbfa2cc5 JK |
418 | { |
419 | int nr_free = 0, ofs = dn->ofs_in_node; | |
4081363f | 420 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
fbfa2cc5 JK |
421 | struct f2fs_node *raw_node; |
422 | __le32 *addr; | |
423 | ||
45590710 | 424 | raw_node = F2FS_NODE(dn->node_page); |
fbfa2cc5 JK |
425 | addr = blkaddr_in_node(raw_node) + ofs; |
426 | ||
6c311ec6 | 427 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
fbfa2cc5 JK |
428 | block_t blkaddr = le32_to_cpu(*addr); |
429 | if (blkaddr == NULL_ADDR) | |
430 | continue; | |
431 | ||
432 | update_extent_cache(NULL_ADDR, dn); | |
433 | invalidate_blocks(sbi, blkaddr); | |
fbfa2cc5 JK |
434 | nr_free++; |
435 | } | |
436 | if (nr_free) { | |
d7cc950b | 437 | dec_valid_block_count(sbi, dn->inode, nr_free); |
fbfa2cc5 JK |
438 | set_page_dirty(dn->node_page); |
439 | sync_inode_page(dn); | |
440 | } | |
441 | dn->ofs_in_node = ofs; | |
51dd6249 NJ |
442 | |
443 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, | |
444 | dn->ofs_in_node, nr_free); | |
fbfa2cc5 JK |
445 | return nr_free; |
446 | } | |
447 | ||
448 | void truncate_data_blocks(struct dnode_of_data *dn) | |
449 | { | |
450 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); | |
451 | } | |
452 | ||
b3d208f9 | 453 | static int truncate_partial_data_page(struct inode *inode, u64 from) |
fbfa2cc5 JK |
454 | { |
455 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
456 | struct page *page; | |
457 | ||
458 | if (!offset) | |
b3d208f9 | 459 | return 0; |
fbfa2cc5 | 460 | |
c718379b | 461 | page = find_data_page(inode, from >> PAGE_CACHE_SHIFT, false); |
fbfa2cc5 | 462 | if (IS_ERR(page)) |
b3d208f9 | 463 | return 0; |
fbfa2cc5 JK |
464 | |
465 | lock_page(page); | |
ca0a81b3 CY |
466 | if (unlikely(!PageUptodate(page) || |
467 | page->mapping != inode->i_mapping)) | |
468 | goto out; | |
469 | ||
3cb5ad15 | 470 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 JK |
471 | zero_user(page, offset, PAGE_CACHE_SIZE - offset); |
472 | set_page_dirty(page); | |
ca0a81b3 | 473 | out: |
fbfa2cc5 | 474 | f2fs_put_page(page, 1); |
b3d208f9 | 475 | return 0; |
fbfa2cc5 JK |
476 | } |
477 | ||
764aa3e9 | 478 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
fbfa2cc5 | 479 | { |
4081363f | 480 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
481 | unsigned int blocksize = inode->i_sb->s_blocksize; |
482 | struct dnode_of_data dn; | |
483 | pgoff_t free_from; | |
9ffe0fb5 | 484 | int count = 0, err = 0; |
b3d208f9 | 485 | struct page *ipage; |
fbfa2cc5 | 486 | |
51dd6249 NJ |
487 | trace_f2fs_truncate_blocks_enter(inode, from); |
488 | ||
fbfa2cc5 | 489 | free_from = (pgoff_t) |
b3d208f9 | 490 | ((from + blocksize - 1) >> (sbi->log_blocksize)); |
fbfa2cc5 | 491 | |
764aa3e9 JK |
492 | if (lock) |
493 | f2fs_lock_op(sbi); | |
9ffe0fb5 | 494 | |
b3d208f9 JK |
495 | ipage = get_node_page(sbi, inode->i_ino); |
496 | if (IS_ERR(ipage)) { | |
497 | err = PTR_ERR(ipage); | |
498 | goto out; | |
499 | } | |
500 | ||
501 | if (f2fs_has_inline_data(inode)) { | |
b3d208f9 JK |
502 | f2fs_put_page(ipage, 1); |
503 | goto out; | |
504 | } | |
505 | ||
506 | set_new_dnode(&dn, inode, ipage, NULL, 0); | |
266e97a8 | 507 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); |
fbfa2cc5 JK |
508 | if (err) { |
509 | if (err == -ENOENT) | |
510 | goto free_next; | |
b3d208f9 | 511 | goto out; |
1ce86bf6 JK |
512 | } |
513 | ||
6403eb1f | 514 | count = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
fbfa2cc5 JK |
515 | |
516 | count -= dn.ofs_in_node; | |
9850cf4a | 517 | f2fs_bug_on(sbi, count < 0); |
39936837 | 518 | |
fbfa2cc5 JK |
519 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
520 | truncate_data_blocks_range(&dn, count); | |
521 | free_from += count; | |
522 | } | |
523 | ||
524 | f2fs_put_dnode(&dn); | |
525 | free_next: | |
526 | err = truncate_inode_blocks(inode, free_from); | |
764d2c80 JK |
527 | out: |
528 | if (lock) | |
529 | f2fs_unlock_op(sbi); | |
b3d208f9 JK |
530 | |
531 | /* lastly zero out the first data page */ | |
532 | if (!err) | |
533 | err = truncate_partial_data_page(inode, from); | |
fbfa2cc5 | 534 | |
51dd6249 | 535 | trace_f2fs_truncate_blocks_exit(inode, err); |
fbfa2cc5 JK |
536 | return err; |
537 | } | |
538 | ||
539 | void f2fs_truncate(struct inode *inode) | |
540 | { | |
541 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || | |
542 | S_ISLNK(inode->i_mode))) | |
543 | return; | |
544 | ||
51dd6249 NJ |
545 | trace_f2fs_truncate(inode); |
546 | ||
92dffd01 JK |
547 | /* we should check inline_data size */ |
548 | if (f2fs_has_inline_data(inode) && !f2fs_may_inline(inode)) { | |
549 | if (f2fs_convert_inline_inode(inode)) | |
550 | return; | |
551 | } | |
552 | ||
764aa3e9 | 553 | if (!truncate_blocks(inode, i_size_read(inode), true)) { |
fbfa2cc5 JK |
554 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
555 | mark_inode_dirty(inode); | |
556 | } | |
fbfa2cc5 JK |
557 | } |
558 | ||
2d4d9fb5 | 559 | int f2fs_getattr(struct vfsmount *mnt, |
fbfa2cc5 JK |
560 | struct dentry *dentry, struct kstat *stat) |
561 | { | |
562 | struct inode *inode = dentry->d_inode; | |
563 | generic_fillattr(inode, stat); | |
564 | stat->blocks <<= 3; | |
565 | return 0; | |
566 | } | |
567 | ||
568 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
569 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) | |
570 | { | |
571 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
572 | unsigned int ia_valid = attr->ia_valid; | |
573 | ||
574 | if (ia_valid & ATTR_UID) | |
575 | inode->i_uid = attr->ia_uid; | |
576 | if (ia_valid & ATTR_GID) | |
577 | inode->i_gid = attr->ia_gid; | |
578 | if (ia_valid & ATTR_ATIME) | |
579 | inode->i_atime = timespec_trunc(attr->ia_atime, | |
580 | inode->i_sb->s_time_gran); | |
581 | if (ia_valid & ATTR_MTIME) | |
582 | inode->i_mtime = timespec_trunc(attr->ia_mtime, | |
583 | inode->i_sb->s_time_gran); | |
584 | if (ia_valid & ATTR_CTIME) | |
585 | inode->i_ctime = timespec_trunc(attr->ia_ctime, | |
586 | inode->i_sb->s_time_gran); | |
587 | if (ia_valid & ATTR_MODE) { | |
588 | umode_t mode = attr->ia_mode; | |
589 | ||
590 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
591 | mode &= ~S_ISGID; | |
592 | set_acl_inode(fi, mode); | |
593 | } | |
594 | } | |
595 | #else | |
596 | #define __setattr_copy setattr_copy | |
597 | #endif | |
598 | ||
599 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) | |
600 | { | |
601 | struct inode *inode = dentry->d_inode; | |
602 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
603 | int err; | |
604 | ||
605 | err = inode_change_ok(inode, attr); | |
606 | if (err) | |
607 | return err; | |
608 | ||
09db6a2e | 609 | if (attr->ia_valid & ATTR_SIZE) { |
09db6a2e CY |
610 | if (attr->ia_size != i_size_read(inode)) { |
611 | truncate_setsize(inode, attr->ia_size); | |
612 | f2fs_truncate(inode); | |
613 | f2fs_balance_fs(F2FS_I_SB(inode)); | |
614 | } else { | |
615 | /* | |
616 | * giving a chance to truncate blocks past EOF which | |
617 | * are fallocated with FALLOC_FL_KEEP_SIZE. | |
618 | */ | |
619 | f2fs_truncate(inode); | |
620 | } | |
fbfa2cc5 JK |
621 | } |
622 | ||
623 | __setattr_copy(inode, attr); | |
624 | ||
625 | if (attr->ia_valid & ATTR_MODE) { | |
a6dda0e6 | 626 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
fbfa2cc5 JK |
627 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
628 | inode->i_mode = fi->i_acl_mode; | |
629 | clear_inode_flag(fi, FI_ACL_MODE); | |
630 | } | |
631 | } | |
632 | ||
633 | mark_inode_dirty(inode); | |
634 | return err; | |
635 | } | |
636 | ||
637 | const struct inode_operations f2fs_file_inode_operations = { | |
638 | .getattr = f2fs_getattr, | |
639 | .setattr = f2fs_setattr, | |
640 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 641 | .set_acl = f2fs_set_acl, |
fbfa2cc5 JK |
642 | #ifdef CONFIG_F2FS_FS_XATTR |
643 | .setxattr = generic_setxattr, | |
644 | .getxattr = generic_getxattr, | |
645 | .listxattr = f2fs_listxattr, | |
646 | .removexattr = generic_removexattr, | |
647 | #endif | |
9ab70134 | 648 | .fiemap = f2fs_fiemap, |
fbfa2cc5 JK |
649 | }; |
650 | ||
651 | static void fill_zero(struct inode *inode, pgoff_t index, | |
652 | loff_t start, loff_t len) | |
653 | { | |
4081363f | 654 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
655 | struct page *page; |
656 | ||
657 | if (!len) | |
658 | return; | |
659 | ||
bd43df02 JK |
660 | f2fs_balance_fs(sbi); |
661 | ||
e479556b | 662 | f2fs_lock_op(sbi); |
64aa7ed9 | 663 | page = get_new_data_page(inode, NULL, index, false); |
e479556b | 664 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
665 | |
666 | if (!IS_ERR(page)) { | |
3cb5ad15 | 667 | f2fs_wait_on_page_writeback(page, DATA); |
fbfa2cc5 JK |
668 | zero_user(page, start, len); |
669 | set_page_dirty(page); | |
670 | f2fs_put_page(page, 1); | |
671 | } | |
672 | } | |
673 | ||
674 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) | |
675 | { | |
676 | pgoff_t index; | |
677 | int err; | |
678 | ||
679 | for (index = pg_start; index < pg_end; index++) { | |
680 | struct dnode_of_data dn; | |
9eaeba70 | 681 | |
fbfa2cc5 | 682 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
266e97a8 | 683 | err = get_dnode_of_data(&dn, index, LOOKUP_NODE); |
fbfa2cc5 | 684 | if (err) { |
fbfa2cc5 JK |
685 | if (err == -ENOENT) |
686 | continue; | |
687 | return err; | |
688 | } | |
689 | ||
690 | if (dn.data_blkaddr != NULL_ADDR) | |
691 | truncate_data_blocks_range(&dn, 1); | |
692 | f2fs_put_dnode(&dn); | |
fbfa2cc5 JK |
693 | } |
694 | return 0; | |
695 | } | |
696 | ||
a66c7b2f | 697 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
fbfa2cc5 JK |
698 | { |
699 | pgoff_t pg_start, pg_end; | |
700 | loff_t off_start, off_end; | |
701 | int ret = 0; | |
702 | ||
14cecc5c CY |
703 | if (!S_ISREG(inode->i_mode)) |
704 | return -EOPNOTSUPP; | |
705 | ||
706 | /* skip punching hole beyond i_size */ | |
707 | if (offset >= inode->i_size) | |
708 | return ret; | |
709 | ||
b3d208f9 JK |
710 | if (f2fs_has_inline_data(inode)) { |
711 | ret = f2fs_convert_inline_inode(inode); | |
712 | if (ret) | |
713 | return ret; | |
714 | } | |
9ffe0fb5 | 715 | |
fbfa2cc5 JK |
716 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
717 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
718 | ||
719 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
720 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
721 | ||
722 | if (pg_start == pg_end) { | |
723 | fill_zero(inode, pg_start, off_start, | |
724 | off_end - off_start); | |
725 | } else { | |
726 | if (off_start) | |
727 | fill_zero(inode, pg_start++, off_start, | |
728 | PAGE_CACHE_SIZE - off_start); | |
729 | if (off_end) | |
730 | fill_zero(inode, pg_end, 0, off_end); | |
731 | ||
732 | if (pg_start < pg_end) { | |
733 | struct address_space *mapping = inode->i_mapping; | |
734 | loff_t blk_start, blk_end; | |
4081363f | 735 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1127a3d4 JH |
736 | |
737 | f2fs_balance_fs(sbi); | |
fbfa2cc5 JK |
738 | |
739 | blk_start = pg_start << PAGE_CACHE_SHIFT; | |
740 | blk_end = pg_end << PAGE_CACHE_SHIFT; | |
741 | truncate_inode_pages_range(mapping, blk_start, | |
742 | blk_end - 1); | |
39936837 | 743 | |
e479556b | 744 | f2fs_lock_op(sbi); |
fbfa2cc5 | 745 | ret = truncate_hole(inode, pg_start, pg_end); |
e479556b | 746 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
747 | } |
748 | } | |
749 | ||
fbfa2cc5 JK |
750 | return ret; |
751 | } | |
752 | ||
753 | static int expand_inode_data(struct inode *inode, loff_t offset, | |
754 | loff_t len, int mode) | |
755 | { | |
4081363f | 756 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
fbfa2cc5 JK |
757 | pgoff_t index, pg_start, pg_end; |
758 | loff_t new_size = i_size_read(inode); | |
759 | loff_t off_start, off_end; | |
760 | int ret = 0; | |
761 | ||
497a0930 CY |
762 | f2fs_balance_fs(sbi); |
763 | ||
fbfa2cc5 JK |
764 | ret = inode_newsize_ok(inode, (len + offset)); |
765 | if (ret) | |
766 | return ret; | |
767 | ||
b3d208f9 JK |
768 | if (f2fs_has_inline_data(inode)) { |
769 | ret = f2fs_convert_inline_inode(inode); | |
770 | if (ret) | |
771 | return ret; | |
772 | } | |
9e09fc85 | 773 | |
fbfa2cc5 JK |
774 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
775 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; | |
776 | ||
777 | off_start = offset & (PAGE_CACHE_SIZE - 1); | |
778 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); | |
779 | ||
ead43275 JK |
780 | f2fs_lock_op(sbi); |
781 | ||
fbfa2cc5 JK |
782 | for (index = pg_start; index <= pg_end; index++) { |
783 | struct dnode_of_data dn; | |
784 | ||
98397ff3 JK |
785 | if (index == pg_end && !off_end) |
786 | goto noalloc; | |
787 | ||
fbfa2cc5 | 788 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
b600965c | 789 | ret = f2fs_reserve_block(&dn, index); |
b600965c | 790 | if (ret) |
fbfa2cc5 | 791 | break; |
98397ff3 | 792 | noalloc: |
fbfa2cc5 JK |
793 | if (pg_start == pg_end) |
794 | new_size = offset + len; | |
795 | else if (index == pg_start && off_start) | |
796 | new_size = (index + 1) << PAGE_CACHE_SHIFT; | |
797 | else if (index == pg_end) | |
798 | new_size = (index << PAGE_CACHE_SHIFT) + off_end; | |
799 | else | |
800 | new_size += PAGE_CACHE_SIZE; | |
801 | } | |
802 | ||
803 | if (!(mode & FALLOC_FL_KEEP_SIZE) && | |
804 | i_size_read(inode) < new_size) { | |
805 | i_size_write(inode, new_size); | |
806 | mark_inode_dirty(inode); | |
ead43275 | 807 | update_inode_page(inode); |
fbfa2cc5 | 808 | } |
ead43275 | 809 | f2fs_unlock_op(sbi); |
fbfa2cc5 JK |
810 | |
811 | return ret; | |
812 | } | |
813 | ||
814 | static long f2fs_fallocate(struct file *file, int mode, | |
815 | loff_t offset, loff_t len) | |
816 | { | |
6131ffaa | 817 | struct inode *inode = file_inode(file); |
fbfa2cc5 JK |
818 | long ret; |
819 | ||
820 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) | |
821 | return -EOPNOTSUPP; | |
822 | ||
3375f696 CY |
823 | mutex_lock(&inode->i_mutex); |
824 | ||
fbfa2cc5 | 825 | if (mode & FALLOC_FL_PUNCH_HOLE) |
a66c7b2f | 826 | ret = punch_hole(inode, offset, len); |
fbfa2cc5 JK |
827 | else |
828 | ret = expand_inode_data(inode, offset, len, mode); | |
829 | ||
3af60a49 NJ |
830 | if (!ret) { |
831 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
832 | mark_inode_dirty(inode); | |
833 | } | |
3375f696 CY |
834 | |
835 | mutex_unlock(&inode->i_mutex); | |
836 | ||
c01e2853 | 837 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
fbfa2cc5 JK |
838 | return ret; |
839 | } | |
840 | ||
1e84371f JK |
841 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
842 | { | |
843 | /* some remained atomic pages should discarded */ | |
844 | if (f2fs_is_atomic_file(inode)) | |
845 | commit_inmem_pages(inode, true); | |
846 | if (f2fs_is_volatile_file(inode)) { | |
847 | set_inode_flag(F2FS_I(inode), FI_DROP_CACHE); | |
848 | filemap_fdatawrite(inode->i_mapping); | |
849 | clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE); | |
850 | } | |
851 | return 0; | |
852 | } | |
853 | ||
fbfa2cc5 JK |
854 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
855 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) | |
856 | ||
857 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) | |
858 | { | |
859 | if (S_ISDIR(mode)) | |
860 | return flags; | |
861 | else if (S_ISREG(mode)) | |
862 | return flags & F2FS_REG_FLMASK; | |
863 | else | |
864 | return flags & F2FS_OTHER_FLMASK; | |
865 | } | |
866 | ||
52656e6c | 867 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
fbfa2cc5 | 868 | { |
6131ffaa | 869 | struct inode *inode = file_inode(filp); |
fbfa2cc5 | 870 | struct f2fs_inode_info *fi = F2FS_I(inode); |
52656e6c JK |
871 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
872 | return put_user(flags, (int __user *)arg); | |
873 | } | |
fbfa2cc5 | 874 | |
52656e6c JK |
875 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
876 | { | |
877 | struct inode *inode = file_inode(filp); | |
878 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
879 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; | |
880 | unsigned int oldflags; | |
881 | int ret; | |
fbfa2cc5 | 882 | |
52656e6c JK |
883 | ret = mnt_want_write_file(filp); |
884 | if (ret) | |
885 | return ret; | |
fbfa2cc5 | 886 | |
52656e6c JK |
887 | if (!inode_owner_or_capable(inode)) { |
888 | ret = -EACCES; | |
889 | goto out; | |
890 | } | |
fbfa2cc5 | 891 | |
52656e6c JK |
892 | if (get_user(flags, (int __user *)arg)) { |
893 | ret = -EFAULT; | |
894 | goto out; | |
895 | } | |
fbfa2cc5 | 896 | |
52656e6c | 897 | flags = f2fs_mask_flags(inode->i_mode, flags); |
fbfa2cc5 | 898 | |
52656e6c | 899 | mutex_lock(&inode->i_mutex); |
fbfa2cc5 | 900 | |
52656e6c | 901 | oldflags = fi->i_flags; |
fbfa2cc5 | 902 | |
52656e6c JK |
903 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
904 | if (!capable(CAP_LINUX_IMMUTABLE)) { | |
905 | mutex_unlock(&inode->i_mutex); | |
906 | ret = -EPERM; | |
907 | goto out; | |
fbfa2cc5 | 908 | } |
52656e6c | 909 | } |
fbfa2cc5 | 910 | |
52656e6c JK |
911 | flags = flags & FS_FL_USER_MODIFIABLE; |
912 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; | |
913 | fi->i_flags = flags; | |
914 | mutex_unlock(&inode->i_mutex); | |
fbfa2cc5 | 915 | |
52656e6c JK |
916 | f2fs_set_inode_flags(inode); |
917 | inode->i_ctime = CURRENT_TIME; | |
918 | mark_inode_dirty(inode); | |
fbfa2cc5 | 919 | out: |
52656e6c JK |
920 | mnt_drop_write_file(filp); |
921 | return ret; | |
922 | } | |
4b2fecc8 | 923 | |
88b88a66 JK |
924 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
925 | { | |
926 | struct inode *inode = file_inode(filp); | |
88b88a66 JK |
927 | |
928 | if (!inode_owner_or_capable(inode)) | |
929 | return -EACCES; | |
930 | ||
1e84371f JK |
931 | f2fs_balance_fs(F2FS_I_SB(inode)); |
932 | ||
933 | if (f2fs_is_atomic_file(inode)) | |
934 | return 0; | |
88b88a66 JK |
935 | |
936 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
937 | ||
b3d208f9 | 938 | return f2fs_convert_inline_inode(inode); |
88b88a66 JK |
939 | } |
940 | ||
941 | static int f2fs_ioc_commit_atomic_write(struct file *filp) | |
942 | { | |
943 | struct inode *inode = file_inode(filp); | |
944 | int ret; | |
945 | ||
946 | if (!inode_owner_or_capable(inode)) | |
947 | return -EACCES; | |
948 | ||
02a1335f JK |
949 | if (f2fs_is_volatile_file(inode)) |
950 | return 0; | |
951 | ||
88b88a66 JK |
952 | ret = mnt_want_write_file(filp); |
953 | if (ret) | |
954 | return ret; | |
955 | ||
956 | if (f2fs_is_atomic_file(inode)) | |
957 | commit_inmem_pages(inode, false); | |
958 | ||
959 | ret = f2fs_sync_file(filp, 0, LONG_MAX, 0); | |
960 | mnt_drop_write_file(filp); | |
1e84371f | 961 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
88b88a66 JK |
962 | return ret; |
963 | } | |
964 | ||
02a1335f JK |
965 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
966 | { | |
967 | struct inode *inode = file_inode(filp); | |
968 | ||
969 | if (!inode_owner_or_capable(inode)) | |
970 | return -EACCES; | |
971 | ||
1e84371f JK |
972 | if (f2fs_is_volatile_file(inode)) |
973 | return 0; | |
974 | ||
02a1335f | 975 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
b3d208f9 JK |
976 | |
977 | return f2fs_convert_inline_inode(inode); | |
02a1335f JK |
978 | } |
979 | ||
1e84371f JK |
980 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
981 | { | |
982 | struct inode *inode = file_inode(filp); | |
983 | ||
984 | if (!inode_owner_or_capable(inode)) | |
985 | return -EACCES; | |
986 | ||
987 | if (!f2fs_is_volatile_file(inode)) | |
988 | return 0; | |
989 | ||
990 | punch_hole(inode, 0, F2FS_BLKSIZE); | |
991 | return 0; | |
992 | } | |
993 | ||
994 | static int f2fs_ioc_abort_volatile_write(struct file *filp) | |
995 | { | |
996 | struct inode *inode = file_inode(filp); | |
997 | int ret; | |
998 | ||
999 | if (!inode_owner_or_capable(inode)) | |
1000 | return -EACCES; | |
1001 | ||
1002 | ret = mnt_want_write_file(filp); | |
1003 | if (ret) | |
1004 | return ret; | |
1005 | ||
1006 | f2fs_balance_fs(F2FS_I_SB(inode)); | |
1007 | ||
1008 | if (f2fs_is_atomic_file(inode)) { | |
1009 | commit_inmem_pages(inode, false); | |
1010 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); | |
1011 | } | |
1012 | ||
1013 | if (f2fs_is_volatile_file(inode)) { | |
1014 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); | |
1015 | filemap_fdatawrite(inode->i_mapping); | |
1016 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); | |
1017 | } | |
1018 | mnt_drop_write_file(filp); | |
1019 | return ret; | |
1020 | } | |
1021 | ||
52656e6c JK |
1022 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
1023 | { | |
1024 | struct inode *inode = file_inode(filp); | |
1025 | struct super_block *sb = inode->i_sb; | |
1026 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1027 | struct fstrim_range range; | |
1028 | int ret; | |
4b2fecc8 | 1029 | |
52656e6c JK |
1030 | if (!capable(CAP_SYS_ADMIN)) |
1031 | return -EPERM; | |
4b2fecc8 | 1032 | |
52656e6c JK |
1033 | if (!blk_queue_discard(q)) |
1034 | return -EOPNOTSUPP; | |
4b2fecc8 | 1035 | |
52656e6c JK |
1036 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
1037 | sizeof(range))) | |
1038 | return -EFAULT; | |
4b2fecc8 | 1039 | |
52656e6c JK |
1040 | range.minlen = max((unsigned int)range.minlen, |
1041 | q->limits.discard_granularity); | |
1042 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); | |
1043 | if (ret < 0) | |
1044 | return ret; | |
4b2fecc8 | 1045 | |
52656e6c JK |
1046 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
1047 | sizeof(range))) | |
1048 | return -EFAULT; | |
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) | |
1053 | { | |
1054 | switch (cmd) { | |
1055 | case F2FS_IOC_GETFLAGS: | |
1056 | return f2fs_ioc_getflags(filp, arg); | |
1057 | case F2FS_IOC_SETFLAGS: | |
1058 | return f2fs_ioc_setflags(filp, arg); | |
88b88a66 JK |
1059 | case F2FS_IOC_START_ATOMIC_WRITE: |
1060 | return f2fs_ioc_start_atomic_write(filp); | |
1061 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: | |
1062 | return f2fs_ioc_commit_atomic_write(filp); | |
02a1335f JK |
1063 | case F2FS_IOC_START_VOLATILE_WRITE: |
1064 | return f2fs_ioc_start_volatile_write(filp); | |
1e84371f JK |
1065 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
1066 | return f2fs_ioc_release_volatile_write(filp); | |
1067 | case F2FS_IOC_ABORT_VOLATILE_WRITE: | |
1068 | return f2fs_ioc_abort_volatile_write(filp); | |
52656e6c JK |
1069 | case FITRIM: |
1070 | return f2fs_ioc_fitrim(filp, arg); | |
fbfa2cc5 JK |
1071 | default: |
1072 | return -ENOTTY; | |
1073 | } | |
1074 | } | |
1075 | ||
e9750824 NJ |
1076 | #ifdef CONFIG_COMPAT |
1077 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1078 | { | |
1079 | switch (cmd) { | |
1080 | case F2FS_IOC32_GETFLAGS: | |
1081 | cmd = F2FS_IOC_GETFLAGS; | |
1082 | break; | |
1083 | case F2FS_IOC32_SETFLAGS: | |
1084 | cmd = F2FS_IOC_SETFLAGS; | |
1085 | break; | |
1086 | default: | |
1087 | return -ENOIOCTLCMD; | |
1088 | } | |
1089 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); | |
1090 | } | |
1091 | #endif | |
1092 | ||
fbfa2cc5 | 1093 | const struct file_operations f2fs_file_operations = { |
267378d4 | 1094 | .llseek = f2fs_llseek, |
aad4f8bb | 1095 | .read = new_sync_read, |
8174202b | 1096 | .write = new_sync_write, |
aad4f8bb | 1097 | .read_iter = generic_file_read_iter, |
8174202b | 1098 | .write_iter = generic_file_write_iter, |
fbfa2cc5 | 1099 | .open = generic_file_open, |
12662234 | 1100 | .release = f2fs_release_file, |
fbfa2cc5 JK |
1101 | .mmap = f2fs_file_mmap, |
1102 | .fsync = f2fs_sync_file, | |
1103 | .fallocate = f2fs_fallocate, | |
1104 | .unlocked_ioctl = f2fs_ioctl, | |
e9750824 NJ |
1105 | #ifdef CONFIG_COMPAT |
1106 | .compat_ioctl = f2fs_compat_ioctl, | |
1107 | #endif | |
fbfa2cc5 | 1108 | .splice_read = generic_file_splice_read, |
8d020765 | 1109 | .splice_write = iter_file_splice_write, |
fbfa2cc5 | 1110 | }; |