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f2fs: keep quota data on write_begin failure
[linux-block.git] / fs / f2fs / file.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
fbfa2cc5
JK		 3 * fs/f2fs/file.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
fbfa2cc5
JK		 7 */
8#include <linux/fs.h>
9#include <linux/f2fs_fs.h>
10#include <linux/stat.h>
11#include <linux/buffer_head.h>
12#include <linux/writeback.h>
ae51fb31 13#include <linux/blkdev.h>
fbfa2cc5
JK		 14#include <linux/falloc.h>
15#include <linux/types.h>
e9750824 16#include <linux/compat.h>
fbfa2cc5
JK		 17#include <linux/uaccess.h>
18#include <linux/mount.h>
7f7670fe 19#include <linux/pagevec.h>
dc91de78 20#include <linux/uio.h>
8da4b8c4 21#include <linux/uuid.h>
4dd6f977 22#include <linux/file.h>
4507847c 23#include <linux/nls.h>
fbfa2cc5
JK		 24
25#include "f2fs.h"
26#include "node.h"
27#include "segment.h"
28#include "xattr.h"
29#include "acl.h"
c1c1b583 30#include "gc.h"
db9f7c1a 31#include "trace.h"
a2a4a7e4 32#include <trace/events/f2fs.h>
fbfa2cc5 33
ea4d479b 34static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
5a3a2d83
QS		 35{
36 struct inode *inode = file_inode(vmf->vma->vm_file);
ea4d479b 37 vm_fault_t ret;
5a3a2d83
QS		 38
39 down_read(&F2FS_I(inode)->i_mmap_sem);
ea4d479b 40 ret = filemap_fault(vmf);
5a3a2d83
QS		 41 up_read(&F2FS_I(inode)->i_mmap_sem);
42
d7648343
CY		 43 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
44
ea4d479b 45 return ret;
5a3a2d83
QS		 46}
47
ea4d479b 48static 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);
bdf03299 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
00e09c0b
CY		 61 if (!f2fs_is_checkpoint_ready(sbi)) {
62 err = -ENOSPC;
955ebcd3 63 goto err;
00e09c0b 64 }
1f227a3e 65
bdf03299
JK		 66 /* should do out of any locked page */
67 f2fs_balance_fs(sbi, true);
68
fbfa2cc5 69 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 70
71 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 72
11bac800 73 file_update_time(vmf->vma->vm_file);
5a3a2d83 74 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 75 lock_page(page);
6bacf52f 76 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 77 page_offset(page) > i_size_read(inode) ||
6bacf52f 78 !PageUptodate(page))) {
fbfa2cc5
JK		 79 unlock_page(page);
80 err = -EFAULT;
5a3a2d83 81 goto out_sem;
fbfa2cc5
JK		 82 }
83
39a86958
CY		 84 /* block allocation */
85 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
86 set_new_dnode(&dn, inode, NULL, NULL, 0);
87 err = f2fs_get_block(&dn, page->index);
88 f2fs_put_dnode(&dn);
89 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
90 if (err) {
91 unlock_page(page);
92 goto out_sem;
93 }
94
95 /* fill the page */
bae0ee7a 96 f2fs_wait_on_page_writeback(page, DATA, false, true);
39a86958
CY		 97
98 /* wait for GCed page writeback via META_MAPPING */
99 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
100
fbfa2cc5
JK		 101 /*
102 * check to see if the page is mapped already (no holes)
103 */
104 if (PageMappedToDisk(page))
39a86958 105 goto out_sem;
fbfa2cc5
JK		 106
107 /* page is wholly or partially inside EOF */
09cbfeaf 108 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 109 i_size_read(inode)) {
193bea1d 110 loff_t offset;
f11e98bd 111
09cbfeaf
KS		 112 offset = i_size_read(inode) & ~PAGE_MASK;
113 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 114 }
115 set_page_dirty(page);
237c0790
JK		 116 if (!PageUptodate(page))
117 SetPageUptodate(page);
fbfa2cc5 118
b0af6d49 119 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
c75f2feb 120 f2fs_update_time(sbi, REQ_TIME);
b0af6d49 121
e943a10d 122 trace_f2fs_vm_page_mkwrite(page, DATA);
5a3a2d83
QS		 123out_sem:
124 up_read(&F2FS_I(inode)->i_mmap_sem);
39a86958 125
fbfa2cc5 126 sb_end_pagefault(inode->i_sb);
1f227a3e 127err:
fbfa2cc5
JK		 128 return block_page_mkwrite_return(err);
129}
130
131static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 132 .fault = f2fs_filemap_fault,
f1820361 133 .map_pages = filemap_map_pages,
692bb55d 134 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 135};
136
354a3399
JK		 137static int get_parent_ino(struct inode *inode, nid_t *pino)
138{
139 struct dentry *dentry;
140
141 inode = igrab(inode);
142 dentry = d_find_any_alias(inode);
143 iput(inode);
144 if (!dentry)
145 return 0;
146
f0947e5c
JK		 147 *pino = parent_ino(dentry);
148 dput(dentry);
354a3399
JK		 149 return 1;
150}
151
a5fd5050 152static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 153{
4081363f 154 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 155 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 156
a5fd5050
CY		 157 if (!S_ISREG(inode->i_mode))
158 cp_reason = CP_NON_REGULAR;
159 else if (inode->i_nlink != 1)
160 cp_reason = CP_HARDLINK;
bbf156f7 161 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 162 cp_reason = CP_SB_NEED_CP;
9d1589ef 163 else if (file_wrong_pino(inode))
a5fd5050 164 cp_reason = CP_WRONG_PINO;
4d57b86d 165 else if (!f2fs_space_for_roll_forward(sbi))
a5fd5050 166 cp_reason = CP_NO_SPC_ROLL;
4d57b86d 167 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 168 cp_reason = CP_NODE_NEED_CP;
d5053a34 169 else if (test_opt(sbi, FASTBOOT))
a5fd5050 170 cp_reason = CP_FASTBOOT_MODE;
63189b78 171 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 172 cp_reason = CP_SPEC_LOG_NUM;
63189b78 173 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
4d57b86d
CY		 174 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
175 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
176 TRANS_DIR_INO))
0a007b97 177 cp_reason = CP_RECOVER_DIR;
9d1589ef 178
a5fd5050 179 return cp_reason;
9d1589ef
CY		 180}
181
9c7bb702
CL		 182static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
183{
184 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
185 bool ret = false;
186 /* But we need to avoid that there are some inode updates */
4d57b86d 187 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
9c7bb702
CL		 188 ret = true;
189 f2fs_put_page(i, 0);
190 return ret;
191}
192
51455b19
CL		 193static void try_to_fix_pino(struct inode *inode)
194{
195 struct f2fs_inode_info *fi = F2FS_I(inode);
196 nid_t pino;
197
198 down_write(&fi->i_sem);
51455b19
CL		 199 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
200 get_parent_ino(inode, &pino)) {
205b9822 201 f2fs_i_pino_write(inode, pino);
51455b19 202 file_got_pino(inode);
51455b19 203 }
ee6d182f 204 up_write(&fi->i_sem);
51455b19
CL		 205}
206
608514de
JK		 207static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
208 int datasync, bool atomic)
fbfa2cc5
JK		 209{
210 struct inode *inode = file->f_mapping->host;
4081363f 211 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 212 nid_t ino = inode->i_ino;
fbfa2cc5 213 int ret = 0;
a5fd5050 214 enum cp_reason_type cp_reason = 0;
fbfa2cc5 215 struct writeback_control wbc = {
c81bf1c8 216 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 217 .nr_to_write = LONG_MAX,
218 .for_reclaim = 0,
219 };
50fa53ec 220 unsigned int seq_id = 0;
fbfa2cc5 221
4354994f
DR		 222 if (unlikely(f2fs_readonly(inode->i_sb) ||
223 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1fa95b0b
NJ		 224 return 0;
225
a2a4a7e4 226 trace_f2fs_sync_file_enter(inode);
ea1aa12c 227
b61ac5b7
YH		 228 if (S_ISDIR(inode->i_mode))
229 goto go_write;
230
ea1aa12c 231 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 232 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 233 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 234 ret = file_write_and_wait_range(file, start, end);
91942321 235 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 236
a2a4a7e4 237 if (ret) {
a5fd5050 238 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 239 return ret;
a2a4a7e4 240 }
fbfa2cc5 241
9c7bb702 242 /* if the inode is dirty, let's recover all the time */
281518c6 243 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 244 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 245 goto go_write;
246 }
247
6d99ba41
JK		 248 /*
249 * if there is no written data, don't waste time to write recovery info.
250 */
91942321 251 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
4d57b86d 252 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 253
9c7bb702
CL		 254 /* it may call write_inode just prior to fsync */
255 if (need_inode_page_update(sbi, ino))
19c9c466 256 goto go_write;
19c9c466 257
91942321 258 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
4d57b86d 259 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 260 goto flush_out;
261 goto out;
262 }
19c9c466 263go_write:
e5d2385e
JK		 264 /*
265 * Both of fdatasync() and fsync() are able to be recovered from
266 * sudden-power-off.
267 */
91942321 268 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 269 cp_reason = need_do_checkpoint(inode);
91942321 270 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 271
a5fd5050 272 if (cp_reason) {
fbfa2cc5
JK		 273 /* all the dirty node pages should be flushed for POR */
274 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 275
51455b19
CL		 276 /*
277 * We've secured consistency through sync_fs. Following pino
278 * will be used only for fsynced inodes after checkpoint.
279 */
280 try_to_fix_pino(inode);
91942321
JK		 281 clear_inode_flag(inode, FI_APPEND_WRITE);
282 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 283 goto out;
284 }
88bd02c9 285sync_nodes:
c29fd0c0 286 atomic_inc(&sbi->wb_sync_req[NODE]);
50fa53ec 287 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
c29fd0c0 288 atomic_dec(&sbi->wb_sync_req[NODE]);
c267ec15
JK		 289 if (ret)
290 goto out;
51455b19 291
871f599f 292 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 293 if (unlikely(f2fs_cp_error(sbi))) {
294 ret = -EIO;
871f599f 295 goto out;
6d5a1495 296 }
871f599f 297
4d57b86d 298 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 299 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 300 f2fs_write_inode(inode, NULL);
301 goto sync_nodes;
fbfa2cc5 302 }
51455b19 303
b6a245eb
JK		 304 /*
305 * If it's atomic_write, it's just fine to keep write ordering. So
306 * here we don't need to wait for node write completion, since we use
307 * node chain which serializes node blocks. If one of node writes are
308 * reordered, we can see simply broken chain, resulting in stopping
309 * roll-forward recovery. It means we'll recover all or none node blocks
310 * given fsync mark.
311 */
312 if (!atomic) {
50fa53ec 313 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
b6a245eb
JK		 314 if (ret)
315 goto out;
316 }
51455b19
CL		 317
318 /* once recovery info is written, don't need to tack this */
4d57b86d 319 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 320 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 321flush_out:
d6290814 322 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 323 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 324 if (!ret) {
4d57b86d 325 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 326 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 327 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 328 }
d0239e1b 329 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 330out:
a5fd5050 331 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 332 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 333 return ret;
334}
335
608514de
JK		 336int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
337{
1f227a3e
JK		 338 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
339 return -EIO;
608514de
JK		 340 return f2fs_do_sync_file(file, start, end, datasync, false);
341}
342
7f7670fe
JK		 343static pgoff_t __get_first_dirty_index(struct address_space *mapping,
344 pgoff_t pgofs, int whence)
345{
8faab642 346 struct page *page;
7f7670fe
JK		 347 int nr_pages;
348
349 if (whence != SEEK_DATA)
350 return 0;
351
352 /* find first dirty page index */
8faab642
JK		 353 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
354 1, &page);
355 if (!nr_pages)
356 return ULONG_MAX;
357 pgofs = page->index;
358 put_page(page);
7f7670fe
JK		 359 return pgofs;
360}
361
e1da7872
CY		 362static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
363 pgoff_t dirty, pgoff_t pgofs, int whence)
7f7670fe
JK		 364{
365 switch (whence) {
366 case SEEK_DATA:
367 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
93770ab7 368 __is_valid_data_blkaddr(blkaddr))
7f7670fe
JK		 369 return true;
370 break;
371 case SEEK_HOLE:
372 if (blkaddr == NULL_ADDR)
373 return true;
374 break;
375 }
376 return false;
377}
378
267378d4
CY		 379static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
380{
381 struct inode *inode = file->f_mapping->host;
382 loff_t maxbytes = inode->i_sb->s_maxbytes;
383 struct dnode_of_data dn;
7f7670fe
JK		 384 pgoff_t pgofs, end_offset, dirty;
385 loff_t data_ofs = offset;
386 loff_t isize;
267378d4
CY		 387 int err = 0;
388
5955102c 389 inode_lock(inode);
267378d4
CY		 390
391 isize = i_size_read(inode);
392 if (offset >= isize)
393 goto fail;
394
395 /* handle inline data case */
622f28ae 396 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 397 if (whence == SEEK_HOLE)
398 data_ofs = isize;
399 goto found;
400 }
401
09cbfeaf 402 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 403
7f7670fe
JK		 404 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
405
09cbfeaf 406 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 407 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 408 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 409 if (err && err != -ENOENT) {
410 goto fail;
411 } else if (err == -ENOENT) {
e1c42045 412 /* direct node does not exists */
267378d4 413 if (whence == SEEK_DATA) {
4d57b86d 414 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 415 continue;
416 } else {
417 goto found;
418 }
419 }
420
81ca7350 421 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 422
423 /* find data/hole in dnode block */
424 for (; dn.ofs_in_node < end_offset;
425 dn.ofs_in_node++, pgofs++,
09cbfeaf 426 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 427 block_t blkaddr;
f11e98bd 428
7a2af766
CY		 429 blkaddr = datablock_addr(dn.inode,
430 dn.node_page, dn.ofs_in_node);
267378d4 431
c9b60788
CY		 432 if (__is_valid_data_blkaddr(blkaddr) &&
433 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
93770ab7 434 blkaddr, DATA_GENERIC_ENHANCE)) {
c9b60788
CY		 435 f2fs_put_dnode(&dn);
436 goto fail;
437 }
438
e1da7872
CY		 439 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
440 pgofs, whence)) {
267378d4
CY		 441 f2fs_put_dnode(&dn);
442 goto found;
443 }
444 }
445 f2fs_put_dnode(&dn);
446 }
447
448 if (whence == SEEK_DATA)
449 goto fail;
267378d4 450found:
fe369bc8
JK		 451 if (whence == SEEK_HOLE && data_ofs > isize)
452 data_ofs = isize;
5955102c 453 inode_unlock(inode);
267378d4
CY		 454 return vfs_setpos(file, data_ofs, maxbytes);
455fail:
5955102c 456 inode_unlock(inode);
267378d4
CY		 457 return -ENXIO;
458}
459
460static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
461{
462 struct inode *inode = file->f_mapping->host;
463 loff_t maxbytes = inode->i_sb->s_maxbytes;
464
465 switch (whence) {
466 case SEEK_SET:
467 case SEEK_CUR:
468 case SEEK_END:
469 return generic_file_llseek_size(file, offset, whence,
470 maxbytes, i_size_read(inode));
471 case SEEK_DATA:
472 case SEEK_HOLE:
0b4c5afd
JK		 473 if (offset < 0)
474 return -ENXIO;
267378d4
CY		 475 return f2fs_seek_block(file, offset, whence);
476 }
477
478 return -EINVAL;
479}
480
fbfa2cc5
JK		 481static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
482{
b3d208f9 483 struct inode *inode = file_inode(file);
b9d777b8 484 int err;
b3d208f9 485
1f227a3e
JK		 486 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
487 return -EIO;
488
b3d208f9 489 /* we don't need to use inline_data strictly */
b9d777b8
JK		 490 err = f2fs_convert_inline_inode(inode);
491 if (err)
492 return err;
b3d208f9 493
fbfa2cc5
JK		 494 file_accessed(file);
495 vma->vm_ops = &f2fs_file_vm_ops;
496 return 0;
497}
498
fcc85a4d
JK		 499static int f2fs_file_open(struct inode *inode, struct file *filp)
500{
2e168c82 501 int err = fscrypt_file_open(inode, filp);
fcc85a4d 502
95ae251f
EB		 503 if (err)
504 return err;
505
506 err = fsverity_file_open(inode, filp);
2e168c82
EB		 507 if (err)
508 return err;
b91050a8
HL		 509
510 filp->f_mode |= FMODE_NOWAIT;
511
0abd675e 512 return dquot_file_open(inode, filp);
fcc85a4d
JK		 513}
514
4d57b86d 515void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 516{
4081363f 517 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 518 struct f2fs_node *raw_node;
19b2c30d 519 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 520 __le32 *addr;
7a2af766
CY		 521 int base = 0;
522
523 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
524 base = get_extra_isize(dn->inode);
fbfa2cc5 525
45590710 526 raw_node = F2FS_NODE(dn->node_page);
7a2af766 527 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 528
6c311ec6 529 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
fbfa2cc5 530 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 531
fbfa2cc5
JK		 532 if (blkaddr == NULL_ADDR)
533 continue;
534
e1509cf2 535 dn->data_blkaddr = NULL_ADDR;
4d57b86d 536 f2fs_set_data_blkaddr(dn);
c9b60788
CY		 537
538 if (__is_valid_data_blkaddr(blkaddr) &&
93770ab7
CY		 539 !f2fs_is_valid_blkaddr(sbi, blkaddr,
540 DATA_GENERIC_ENHANCE))
c9b60788
CY		 541 continue;
542
4d57b86d 543 f2fs_invalidate_blocks(sbi, blkaddr);
3c6c2beb 544 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 545 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
fbfa2cc5
JK		 546 nr_free++;
547 }
19b2c30d 548
fbfa2cc5 549 if (nr_free) {
19b2c30d
CY		 550 pgoff_t fofs;
551 /*
552 * once we invalidate valid blkaddr in range [ofs, ofs + count],
553 * we will invalidate all blkaddr in the whole range.
554 */
4d57b86d 555 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 556 dn->inode) + ofs;
19b2c30d 557 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 558 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 559 }
560 dn->ofs_in_node = ofs;
51dd6249 561
d0239e1b 562 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 563 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
564 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 565}
566
4d57b86d 567void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 568{
d02a6e61 569 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
fbfa2cc5
JK		 570}
571
0bfcfcca 572static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 573 bool cache_only)
fbfa2cc5 574{
193bea1d 575 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 576 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 577 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 578 struct page *page;
579
43f3eae1 580 if (!offset && !cache_only)
b3d208f9 581 return 0;
fbfa2cc5 582
43f3eae1 583 if (cache_only) {
34b5d5c2 584 page = find_lock_page(mapping, index);
43f3eae1
JK		 585 if (page && PageUptodate(page))
586 goto truncate_out;
587 f2fs_put_page(page, 1);
b3d208f9 588 return 0;
43f3eae1 589 }
fbfa2cc5 590
4d57b86d 591 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 592 if (IS_ERR(page))
a78aaa2c 593 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 594truncate_out:
bae0ee7a 595 f2fs_wait_on_page_writeback(page, DATA, true, true);
09cbfeaf 596 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 597
598 /* An encrypted inode should have a key and truncate the last page. */
62230e0d 599 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
a9bcf9bc 600 if (!cache_only)
0bfcfcca 601 set_page_dirty(page);
fbfa2cc5 602 f2fs_put_page(page, 1);
b3d208f9 603 return 0;
fbfa2cc5
JK		 604}
605
c42d28ce 606int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 607{
4081363f 608 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 609 struct dnode_of_data dn;
610 pgoff_t free_from;
9ffe0fb5 611 int count = 0, err = 0;
b3d208f9 612 struct page *ipage;
0bfcfcca 613 bool truncate_page = false;
fbfa2cc5 614
51dd6249
NJ		 615 trace_f2fs_truncate_blocks_enter(inode, from);
616
df033caf 617 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 618
09210c97
CY		 619 if (free_from >= sbi->max_file_blocks)
620 goto free_partial;
621
764aa3e9 622 if (lock)
c42d28ce 623 f2fs_lock_op(sbi);
9ffe0fb5 624
4d57b86d 625 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 626 if (IS_ERR(ipage)) {
627 err = PTR_ERR(ipage);
628 goto out;
629 }
630
631 if (f2fs_has_inline_data(inode)) {
4d57b86d 632 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 633 f2fs_put_page(ipage, 1);
0bfcfcca 634 truncate_page = true;
b3d208f9
JK		 635 goto out;
636 }
637
638 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 639 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 640 if (err) {
641 if (err == -ENOENT)
642 goto free_next;
b3d208f9 643 goto out;
1ce86bf6
JK		 644 }
645
81ca7350 646 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 647
648 count -= dn.ofs_in_node;
9850cf4a 649 f2fs_bug_on(sbi, count < 0);
39936837 650
fbfa2cc5 651 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 652 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 653 free_from += count;
654 }
655
656 f2fs_put_dnode(&dn);
657free_next:
4d57b86d 658 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 659out:
660 if (lock)
c42d28ce 661 f2fs_unlock_op(sbi);
09210c97 662free_partial:
b3d208f9
JK		 663 /* lastly zero out the first data page */
664 if (!err)
0bfcfcca 665 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 666
51dd6249 667 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 668 return err;
669}
670
9a449e9c 671int f2fs_truncate(struct inode *inode)
fbfa2cc5 672{
b0154891
CY		 673 int err;
674
1f227a3e
JK		 675 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
676 return -EIO;
677
fbfa2cc5
JK		 678 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
679 S_ISLNK(inode->i_mode)))
b0154891 680 return 0;
fbfa2cc5 681
51dd6249
NJ		 682 trace_f2fs_truncate(inode);
683
14b44d23 684 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
c45d6002 685 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
14b44d23
JK		 686 return -EIO;
687 }
7fa750a1 688
92dffd01 689 /* we should check inline_data size */
b9d777b8 690 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 691 err = f2fs_convert_inline_inode(inode);
692 if (err)
693 return err;
92dffd01
JK		 694 }
695
c42d28ce 696 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 697 if (err)
698 return err;
699
078cd827 700 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 701 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 702 return 0;
fbfa2cc5
JK		 703}
704
a528d35e 705int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 706 u32 request_mask, unsigned int query_flags)
fbfa2cc5 707{
a528d35e 708 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 709 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 710 struct f2fs_inode *ri;
1c6d8ee4
CY		 711 unsigned int flags;
712
1c1d35df 713 if (f2fs_has_extra_attr(inode) &&
7beb01f7 714 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
1c1d35df
CY		 715 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
716 stat->result_mask |= STATX_BTIME;
717 stat->btime.tv_sec = fi->i_crtime.tv_sec;
718 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
719 }
720
36098557 721 flags = fi->i_flags;
59c84408 722 if (flags & F2FS_APPEND_FL)
1c6d8ee4 723 stat->attributes |= STATX_ATTR_APPEND;
62230e0d 724 if (IS_ENCRYPTED(inode))
1c6d8ee4 725 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 726 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 727 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 728 if (flags & F2FS_NODUMP_FL)
1c6d8ee4 729 stat->attributes |= STATX_ATTR_NODUMP;
924e3194
EB		 730 if (IS_VERITY(inode))
731 stat->attributes |= STATX_ATTR_VERITY;
1c6d8ee4
CY		 732
733 stat->attributes_mask |= (STATX_ATTR_APPEND |
1c6d8ee4
CY		 734 STATX_ATTR_ENCRYPTED |
735 STATX_ATTR_IMMUTABLE |
924e3194
EB		 736 STATX_ATTR_NODUMP |
737 STATX_ATTR_VERITY);
1c6d8ee4 738
fbfa2cc5 739 generic_fillattr(inode, stat);
5b4267d1
JK		 740
741 /* we need to show initial sectors used for inline_data/dentries */
742 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
743 f2fs_has_inline_dentry(inode))
744 stat->blocks += (stat->size + 511) >> 9;
745
fbfa2cc5
JK		 746 return 0;
747}
748
749#ifdef CONFIG_F2FS_FS_POSIX_ACL
750static void __setattr_copy(struct inode *inode, const struct iattr *attr)
751{
fbfa2cc5
JK		 752 unsigned int ia_valid = attr->ia_valid;
753
754 if (ia_valid & ATTR_UID)
755 inode->i_uid = attr->ia_uid;
756 if (ia_valid & ATTR_GID)
757 inode->i_gid = attr->ia_gid;
3818c190
DD		 758 if (ia_valid & ATTR_ATIME) {
759 inode->i_atime = timestamp_truncate(attr->ia_atime,
760 inode);
761 }
762 if (ia_valid & ATTR_MTIME) {
763 inode->i_mtime = timestamp_truncate(attr->ia_mtime,
764 inode);
765 }
766 if (ia_valid & ATTR_CTIME) {
767 inode->i_ctime = timestamp_truncate(attr->ia_ctime,
768 inode);
769 }
fbfa2cc5
JK		 770 if (ia_valid & ATTR_MODE) {
771 umode_t mode = attr->ia_mode;
772
773 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
774 mode &= ~S_ISGID;
91942321 775 set_acl_inode(inode, mode);
fbfa2cc5
JK		 776 }
777}
778#else
779#define __setattr_copy setattr_copy
780#endif
781
782int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
783{
2b0143b5 784 struct inode *inode = d_inode(dentry);
fbfa2cc5
JK		 785 int err;
786
1f227a3e
JK		 787 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
788 return -EIO;
789
31051c85 790 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 791 if (err)
792 return err;
793
20bb2479
EB		 794 err = fscrypt_prepare_setattr(dentry, attr);
795 if (err)
796 return err;
797
95ae251f
EB		 798 err = fsverity_prepare_setattr(dentry, attr);
799 if (err)
800 return err;
801
0abd675e
CY		 802 if (is_quota_modification(inode, attr)) {
803 err = dquot_initialize(inode);
804 if (err)
805 return err;
806 }
807 if ((attr->ia_valid & ATTR_UID &&
808 !uid_eq(attr->ia_uid, inode->i_uid)) ||
809 (attr->ia_valid & ATTR_GID &&
810 !gid_eq(attr->ia_gid, inode->i_gid))) {
af033b2a 811 f2fs_lock_op(F2FS_I_SB(inode));
0abd675e 812 err = dquot_transfer(inode, attr);
af033b2a
CY		 813 if (err) {
814 set_sbi_flag(F2FS_I_SB(inode),
815 SBI_QUOTA_NEED_REPAIR);
816 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e 817 return err;
af033b2a
CY		 818 }
819 /*
820 * update uid/gid under lock_op(), so that dquot and inode can
821 * be updated atomically.
822 */
823 if (attr->ia_valid & ATTR_UID)
824 inode->i_uid = attr->ia_uid;
825 if (attr->ia_valid & ATTR_GID)
826 inode->i_gid = attr->ia_gid;
827 f2fs_mark_inode_dirty_sync(inode, true);
828 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e
CY		 829 }
830
09db6a2e 831 if (attr->ia_valid & ATTR_SIZE) {
cfb9a34d
JK		 832 loff_t old_size = i_size_read(inode);
833
834 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
835 /*
836 * should convert inline inode before i_size_write to
837 * keep smaller than inline_data size with inline flag.
838 */
839 err = f2fs_convert_inline_inode(inode);
840 if (err)
841 return err;
842 }
a33c1502 843
a33c1502 844 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 845 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502
CY		 846
847 truncate_setsize(inode, attr->ia_size);
848
cfb9a34d 849 if (attr->ia_size <= old_size)
9a449e9c 850 err = f2fs_truncate(inode);
a33c1502
CY		 851 /*
852 * do not trim all blocks after i_size if target size is
853 * larger than i_size.
854 */
a33c1502 855 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 856 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
a33c1502
CY		 857 if (err)
858 return err;
0cab80ee 859
a0d00fad 860 down_write(&F2FS_I(inode)->i_sem);
cfb9a34d 861 inode->i_mtime = inode->i_ctime = current_time(inode);
a0d00fad
CY		 862 F2FS_I(inode)->last_disk_size = i_size_read(inode);
863 up_write(&F2FS_I(inode)->i_sem);
fbfa2cc5
JK		 864 }
865
866 __setattr_copy(inode, attr);
867
868 if (attr->ia_valid & ATTR_MODE) {
4d57b86d 869 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
91942321
JK		 870 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
871 inode->i_mode = F2FS_I(inode)->i_acl_mode;
872 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 873 }
874 }
875
c0ed4405 876 /* file size may changed here */
ca597bdd 877 f2fs_mark_inode_dirty_sync(inode, true);
15d04354
JK		 878
879 /* inode change will produce dirty node pages flushed by checkpoint */
880 f2fs_balance_fs(F2FS_I_SB(inode), true);
881
fbfa2cc5
JK		 882 return err;
883}
884
885const struct inode_operations f2fs_file_inode_operations = {
886 .getattr = f2fs_getattr,
887 .setattr = f2fs_setattr,
888 .get_acl = f2fs_get_acl,
a6dda0e6 889 .set_acl = f2fs_set_acl,
fbfa2cc5 890#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 891 .listxattr = f2fs_listxattr,
fbfa2cc5 892#endif
9ab70134 893 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 894};
895
6394328a 896static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 897 loff_t start, loff_t len)
898{
4081363f 899 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 900 struct page *page;
901
902 if (!len)
6394328a 903 return 0;
fbfa2cc5 904
2c4db1a6 905 f2fs_balance_fs(sbi, true);
bd43df02 906
e479556b 907 f2fs_lock_op(sbi);
4d57b86d 908 page = f2fs_get_new_data_page(inode, NULL, index, false);
e479556b 909 f2fs_unlock_op(sbi);
fbfa2cc5 910
6394328a
CY		 911 if (IS_ERR(page))
912 return PTR_ERR(page);
913
bae0ee7a 914 f2fs_wait_on_page_writeback(page, DATA, true, true);
6394328a
CY		 915 zero_user(page, start, len);
916 set_page_dirty(page);
917 f2fs_put_page(page, 1);
918 return 0;
fbfa2cc5
JK		 919}
920
4d57b86d 921int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
fbfa2cc5 922{
fbfa2cc5
JK		 923 int err;
924
ea58711e 925 while (pg_start < pg_end) {
fbfa2cc5 926 struct dnode_of_data dn;
ea58711e 927 pgoff_t end_offset, count;
9eaeba70 928
fbfa2cc5 929 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 930 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 931 if (err) {
ea58711e 932 if (err == -ENOENT) {
4d57b86d
CY		 933 pg_start = f2fs_get_next_page_offset(&dn,
934 pg_start);
fbfa2cc5 935 continue;
ea58711e 936 }
fbfa2cc5
JK		 937 return err;
938 }
939
81ca7350 940 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 941 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
942
943 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
944
4d57b86d 945 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5 946 f2fs_put_dnode(&dn);
ea58711e
CY		 947
948 pg_start += count;
fbfa2cc5
JK		 949 }
950 return 0;
951}
952
a66c7b2f 953static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 954{
955 pgoff_t pg_start, pg_end;
956 loff_t off_start, off_end;
b9d777b8 957 int ret;
fbfa2cc5 958
b9d777b8
JK		 959 ret = f2fs_convert_inline_inode(inode);
960 if (ret)
961 return ret;
9ffe0fb5 962
09cbfeaf
KS		 963 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
964 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 965
09cbfeaf
KS		 966 off_start = offset & (PAGE_SIZE - 1);
967 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 968
969 if (pg_start == pg_end) {
6394328a 970 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 971 off_end - off_start);
6394328a
CY		 972 if (ret)
973 return ret;
fbfa2cc5 974 } else {
6394328a
CY		 975 if (off_start) {
976 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 977 PAGE_SIZE - off_start);
6394328a
CY		 978 if (ret)
979 return ret;
980 }
981 if (off_end) {
982 ret = fill_zero(inode, pg_end, 0, off_end);
983 if (ret)
984 return ret;
985 }
fbfa2cc5
JK		 986
987 if (pg_start < pg_end) {
988 struct address_space *mapping = inode->i_mapping;
989 loff_t blk_start, blk_end;
4081363f 990 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 991
2c4db1a6 992 f2fs_balance_fs(sbi, true);
fbfa2cc5 993
09cbfeaf
KS		 994 blk_start = (loff_t)pg_start << PAGE_SHIFT;
995 blk_end = (loff_t)pg_end << PAGE_SHIFT;
a33c1502 996
a33c1502 997 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 998 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502 999
fbfa2cc5
JK		 1000 truncate_inode_pages_range(mapping, blk_start,
1001 blk_end - 1);
39936837 1002
e479556b 1003 f2fs_lock_op(sbi);
4d57b86d 1004 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
e479556b 1005 f2fs_unlock_op(sbi);
a33c1502 1006
5a3a2d83 1007 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 1008 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
fbfa2cc5
JK		 1009 }
1010 }
1011
fbfa2cc5
JK		 1012 return ret;
1013}
1014
0a2aa8fb
JK		 1015static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1016 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 1017{
1018 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1019 struct dnode_of_data dn;
0a2aa8fb 1020 int ret, done, i;
ecbaa406 1021
0a2aa8fb 1022next_dnode:
6e2c64ad 1023 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1024 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 1025 if (ret && ret != -ENOENT) {
1026 return ret;
1027 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 1028 if (dn.max_level == 0)
1029 return -ENOENT;
d02a6e61
CY		 1030 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) - dn.ofs_in_node,
1031 len);
0a2aa8fb
JK		 1032 blkaddr += done;
1033 do_replace += done;
1034 goto next;
1035 }
1036
1037 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1038 dn.ofs_in_node, len);
1039 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 1040 *blkaddr = datablock_addr(dn.inode,
1041 dn.node_page, dn.ofs_in_node);
93770ab7
CY		 1042
1043 if (__is_valid_data_blkaddr(*blkaddr) &&
1044 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1045 DATA_GENERIC_ENHANCE)) {
1046 f2fs_put_dnode(&dn);
10f966bb 1047 return -EFSCORRUPTED;
93770ab7
CY		 1048 }
1049
4d57b86d 1050 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb
JK		 1051
1052 if (test_opt(sbi, LFS)) {
1053 f2fs_put_dnode(&dn);
fd114ab2 1054 return -EOPNOTSUPP;
0a2aa8fb
JK		 1055 }
1056
6e2c64ad 1057 /* do not invalidate this block address */
f28b3434 1058 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 1059 *do_replace = 1;
b4ace337 1060 }
6e2c64ad 1061 }
0a2aa8fb
JK		 1062 f2fs_put_dnode(&dn);
1063next:
1064 len -= done;
1065 off += done;
1066 if (len)
1067 goto next_dnode;
1068 return 0;
1069}
b4ace337 1070
0a2aa8fb
JK		 1071static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1072 int *do_replace, pgoff_t off, int len)
1073{
1074 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1075 struct dnode_of_data dn;
1076 int ret, i;
b4ace337 1077
0a2aa8fb
JK		 1078 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1079 if (*do_replace == 0)
1080 continue;
b4ace337 1081
0a2aa8fb 1082 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1083 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1084 if (ret) {
1085 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1086 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1087 } else {
1088 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1089 }
0a2aa8fb
JK		 1090 f2fs_put_dnode(&dn);
1091 }
1092 return 0;
1093}
1094
1095static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1096 block_t *blkaddr, int *do_replace,
1097 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1098{
1099 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1100 pgoff_t i = 0;
1101 int ret;
36abef4e 1102
0a2aa8fb
JK		 1103 while (i < len) {
1104 if (blkaddr[i] == NULL_ADDR && !full) {
1105 i++;
1106 continue;
6e2c64ad 1107 }
b4ace337 1108
0a2aa8fb
JK		 1109 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1110 struct dnode_of_data dn;
1111 struct node_info ni;
1112 size_t new_size;
1113 pgoff_t ilen;
b4ace337 1114
0a2aa8fb 1115 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1116 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1117 if (ret)
1118 return ret;
b4ace337 1119
7735730d
CY		 1120 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1121 if (ret) {
1122 f2fs_put_dnode(&dn);
1123 return ret;
1124 }
1125
0a2aa8fb
JK		 1126 ilen = min((pgoff_t)
1127 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1128 dn.ofs_in_node, len - i);
1129 do {
7a2af766
CY		 1130 dn.data_blkaddr = datablock_addr(dn.inode,
1131 dn.node_page, dn.ofs_in_node);
4d57b86d 1132 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1133
1134 if (do_replace[i]) {
1135 f2fs_i_blocks_write(src_inode,
0abd675e 1136 1, false, false);
0a2aa8fb 1137 f2fs_i_blocks_write(dst_inode,
0abd675e 1138 1, true, false);
0a2aa8fb
JK		 1139 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1140 blkaddr[i], ni.version, true, false);
1141
1142 do_replace[i] = 0;
1143 }
1144 dn.ofs_in_node++;
1145 i++;
1f0d5c91 1146 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
0a2aa8fb
JK		 1147 if (dst_inode->i_size < new_size)
1148 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1149 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1150
0a2aa8fb
JK		 1151 f2fs_put_dnode(&dn);
1152 } else {
1153 struct page *psrc, *pdst;
1154
4d57b86d
CY		 1155 psrc = f2fs_get_lock_data_page(src_inode,
1156 src + i, true);
0a2aa8fb
JK		 1157 if (IS_ERR(psrc))
1158 return PTR_ERR(psrc);
4d57b86d 1159 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1160 true);
1161 if (IS_ERR(pdst)) {
1162 f2fs_put_page(psrc, 1);
1163 return PTR_ERR(pdst);
1164 }
1165 f2fs_copy_page(psrc, pdst);
1166 set_page_dirty(pdst);
1167 f2fs_put_page(pdst, 1);
6e2c64ad 1168 f2fs_put_page(psrc, 1);
b4ace337 1169
4d57b86d
CY		 1170 ret = f2fs_truncate_hole(src_inode,
1171 src + i, src + i + 1);
0a2aa8fb
JK		 1172 if (ret)
1173 return ret;
1174 i++;
1175 }
6e2c64ad
JK		 1176 }
1177 return 0;
0a2aa8fb 1178}
b4ace337 1179
0a2aa8fb
JK		 1180static int __exchange_data_block(struct inode *src_inode,
1181 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1182 pgoff_t len, bool full)
0a2aa8fb
JK		 1183{
1184 block_t *src_blkaddr;
1185 int *do_replace;
363cad7f 1186 pgoff_t olen;
0a2aa8fb
JK		 1187 int ret;
1188
363cad7f 1189 while (len) {
d02a6e61 1190 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
0a2aa8fb 1191
628b3d14 1192 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1193 array_size(olen, sizeof(block_t)),
1194 GFP_KERNEL);
363cad7f
JK		 1195 if (!src_blkaddr)
1196 return -ENOMEM;
0a2aa8fb 1197
628b3d14 1198 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1199 array_size(olen, sizeof(int)),
1200 GFP_KERNEL);
363cad7f
JK		 1201 if (!do_replace) {
1202 kvfree(src_blkaddr);
1203 return -ENOMEM;
1204 }
0a2aa8fb 1205
363cad7f
JK		 1206 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1207 do_replace, src, olen);
1208 if (ret)
1209 goto roll_back;
0a2aa8fb 1210
363cad7f
JK		 1211 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1212 do_replace, src, dst, olen, full);
1213 if (ret)
1214 goto roll_back;
1215
1216 src += olen;
1217 dst += olen;
1218 len -= olen;
1219
1220 kvfree(src_blkaddr);
1221 kvfree(do_replace);
1222 }
0a2aa8fb
JK		 1223 return 0;
1224
1225roll_back:
9fd62605 1226 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1227 kvfree(src_blkaddr);
1228 kvfree(do_replace);
6e2c64ad
JK		 1229 return ret;
1230}
b4ace337 1231
6f8d4455 1232static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
6e2c64ad
JK		 1233{
1234 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f91108b8 1235 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
6f8d4455
JK		 1236 pgoff_t start = offset >> PAGE_SHIFT;
1237 pgoff_t end = (offset + len) >> PAGE_SHIFT;
0a2aa8fb 1238 int ret;
6e2c64ad 1239
0a2aa8fb 1240 f2fs_balance_fs(sbi, true);
5f281fab 1241
6f8d4455
JK		 1242 /* avoid gc operation during block exchange */
1243 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1244 down_write(&F2FS_I(inode)->i_mmap_sem);
5f281fab 1245
6f8d4455
JK		 1246 f2fs_lock_op(sbi);
1247 f2fs_drop_extent_tree(inode);
1248 truncate_pagecache(inode, offset);
0a2aa8fb
JK		 1249 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1250 f2fs_unlock_op(sbi);
6f8d4455
JK		 1251
1252 up_write(&F2FS_I(inode)->i_mmap_sem);
1253 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1254 return ret;
1255}
1256
1257static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1258{
b4ace337
CY		 1259 loff_t new_size;
1260 int ret;
1261
b4ace337
CY		 1262 if (offset + len >= i_size_read(inode))
1263 return -EINVAL;
1264
1265 /* collapse range should be aligned to block size of f2fs. */
1266 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1267 return -EINVAL;
1268
b9d777b8
JK		 1269 ret = f2fs_convert_inline_inode(inode);
1270 if (ret)
1271 return ret;
97a7b2c2 1272
b4ace337
CY		 1273 /* write out all dirty pages from offset */
1274 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1275 if (ret)
6f8d4455 1276 return ret;
b4ace337 1277
6f8d4455 1278 ret = f2fs_do_collapse(inode, offset, len);
b4ace337 1279 if (ret)
6f8d4455 1280 return ret;
b4ace337 1281
6e2c64ad 1282 /* write out all moved pages, if possible */
6f8d4455 1283 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1284 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1285 truncate_pagecache(inode, offset);
1286
b4ace337 1287 new_size = i_size_read(inode) - len;
6e2c64ad 1288 truncate_pagecache(inode, new_size);
b4ace337 1289
c42d28ce 1290 ret = f2fs_truncate_blocks(inode, new_size, true);
6f8d4455 1291 up_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337 1292 if (!ret)
fc9581c8 1293 f2fs_i_size_write(inode, new_size);
b4ace337
CY		 1294 return ret;
1295}
1296
6e961949
CY		 1297static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1298 pgoff_t end)
1299{
1300 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1301 pgoff_t index = start;
1302 unsigned int ofs_in_node = dn->ofs_in_node;
1303 blkcnt_t count = 0;
1304 int ret;
1305
1306 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1307 if (datablock_addr(dn->inode, dn->node_page,
1308 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1309 count++;
1310 }
1311
1312 dn->ofs_in_node = ofs_in_node;
4d57b86d 1313 ret = f2fs_reserve_new_blocks(dn, count);
6e961949
CY		 1314 if (ret)
1315 return ret;
1316
1317 dn->ofs_in_node = ofs_in_node;
1318 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1319 dn->data_blkaddr = datablock_addr(dn->inode,
1320 dn->node_page, dn->ofs_in_node);
6e961949 1321 /*
4d57b86d 1322 * f2fs_reserve_new_blocks will not guarantee entire block
6e961949
CY		 1323 * allocation.
1324 */
1325 if (dn->data_blkaddr == NULL_ADDR) {
1326 ret = -ENOSPC;
1327 break;
1328 }
1329 if (dn->data_blkaddr != NEW_ADDR) {
4d57b86d 1330 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
6e961949 1331 dn->data_blkaddr = NEW_ADDR;
4d57b86d 1332 f2fs_set_data_blkaddr(dn);
6e961949
CY		 1333 }
1334 }
1335
1336 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1337
1338 return ret;
1339}
1340
75cd4e09
CY		 1341static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1342 int mode)
1343{
1344 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1345 struct address_space *mapping = inode->i_mapping;
1346 pgoff_t index, pg_start, pg_end;
1347 loff_t new_size = i_size_read(inode);
1348 loff_t off_start, off_end;
1349 int ret = 0;
1350
75cd4e09
CY		 1351 ret = inode_newsize_ok(inode, (len + offset));
1352 if (ret)
1353 return ret;
1354
b9d777b8
JK		 1355 ret = f2fs_convert_inline_inode(inode);
1356 if (ret)
1357 return ret;
75cd4e09
CY		 1358
1359 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1360 if (ret)
6f8d4455 1361 return ret;
75cd4e09 1362
09cbfeaf
KS		 1363 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1364 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1365
09cbfeaf
KS		 1366 off_start = offset & (PAGE_SIZE - 1);
1367 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1368
1369 if (pg_start == pg_end) {
6394328a
CY		 1370 ret = fill_zero(inode, pg_start, off_start,
1371 off_end - off_start);
1372 if (ret)
6f8d4455 1373 return ret;
6394328a 1374
75cd4e09
CY		 1375 new_size = max_t(loff_t, new_size, offset + len);
1376 } else {
1377 if (off_start) {
6394328a 1378 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1379 PAGE_SIZE - off_start);
6394328a 1380 if (ret)
6f8d4455 1381 return ret;
6394328a 1382
75cd4e09 1383 new_size = max_t(loff_t, new_size,
09cbfeaf 1384 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1385 }
1386
6e961949 1387 for (index = pg_start; index < pg_end;) {
75cd4e09 1388 struct dnode_of_data dn;
6e961949
CY		 1389 unsigned int end_offset;
1390 pgoff_t end;
75cd4e09 1391
c7079853 1392 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1393 down_write(&F2FS_I(inode)->i_mmap_sem);
c7079853
CY		 1394
1395 truncate_pagecache_range(inode,
1396 (loff_t)index << PAGE_SHIFT,
1397 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1398
75cd4e09
CY		 1399 f2fs_lock_op(sbi);
1400
6e961949 1401 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1402 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1403 if (ret) {
1404 f2fs_unlock_op(sbi);
6f8d4455 1405 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1406 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
75cd4e09
CY		 1407 goto out;
1408 }
1409
6e961949
CY		 1410 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1411 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1412
1413 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09 1414 f2fs_put_dnode(&dn);
c7079853 1415
75cd4e09 1416 f2fs_unlock_op(sbi);
6f8d4455 1417 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1418 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
9434fcde
CY		 1419
1420 f2fs_balance_fs(sbi, dn.node_changed);
1421
6e961949
CY		 1422 if (ret)
1423 goto out;
75cd4e09 1424
6e961949 1425 index = end;
75cd4e09 1426 new_size = max_t(loff_t, new_size,
6e961949 1427 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1428 }
1429
1430 if (off_end) {
6394328a
CY		 1431 ret = fill_zero(inode, pg_end, 0, off_end);
1432 if (ret)
1433 goto out;
1434
75cd4e09
CY		 1435 new_size = max_t(loff_t, new_size, offset + len);
1436 }
1437 }
1438
1439out:
17cd07ae
CY		 1440 if (new_size > i_size_read(inode)) {
1441 if (mode & FALLOC_FL_KEEP_SIZE)
1442 file_set_keep_isize(inode);
1443 else
1444 f2fs_i_size_write(inode, new_size);
1445 }
75cd4e09
CY		 1446 return ret;
1447}
1448
f62185d0
CY		 1449static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1450{
1451 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1452 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1453 loff_t new_size;
6e2c64ad 1454 int ret = 0;
f62185d0 1455
f62185d0 1456 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1457 ret = inode_newsize_ok(inode, new_size);
1458 if (ret)
1459 return ret;
f62185d0
CY		 1460
1461 if (offset >= i_size_read(inode))
1462 return -EINVAL;
1463
1464 /* insert range should be aligned to block size of f2fs. */
1465 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1466 return -EINVAL;
1467
b9d777b8
JK		 1468 ret = f2fs_convert_inline_inode(inode);
1469 if (ret)
1470 return ret;
97a7b2c2 1471
2c4db1a6 1472 f2fs_balance_fs(sbi, true);
2a340760 1473
5a3a2d83 1474 down_write(&F2FS_I(inode)->i_mmap_sem);
c42d28ce 1475 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
6f8d4455 1476 up_write(&F2FS_I(inode)->i_mmap_sem);
f62185d0 1477 if (ret)
6f8d4455 1478 return ret;
f62185d0
CY		 1479
1480 /* write out all dirty pages from offset */
1481 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1482 if (ret)
6f8d4455 1483 return ret;
f62185d0 1484
09cbfeaf
KS		 1485 pg_start = offset >> PAGE_SHIFT;
1486 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1487 delta = pg_end - pg_start;
f91108b8 1488 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
0a2aa8fb 1489
6f8d4455
JK		 1490 /* avoid gc operation during block exchange */
1491 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1492 down_write(&F2FS_I(inode)->i_mmap_sem);
1493 truncate_pagecache(inode, offset);
1494
0a2aa8fb
JK		 1495 while (!ret && idx > pg_start) {
1496 nr = idx - pg_start;
1497 if (nr > delta)
1498 nr = delta;
1499 idx -= nr;
f62185d0 1500
f62185d0 1501 f2fs_lock_op(sbi);
5f281fab
JK		 1502 f2fs_drop_extent_tree(inode);
1503
0a2aa8fb
JK		 1504 ret = __exchange_data_block(inode, inode, idx,
1505 idx + delta, nr, false);
f62185d0
CY		 1506 f2fs_unlock_op(sbi);
1507 }
6f8d4455
JK		 1508 up_write(&F2FS_I(inode)->i_mmap_sem);
1509 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f62185d0 1510
6e2c64ad 1511 /* write out all moved pages, if possible */
6f8d4455 1512 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1513 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1514 truncate_pagecache(inode, offset);
6f8d4455 1515 up_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1516
1517 if (!ret)
fc9581c8 1518 f2fs_i_size_write(inode, new_size);
f62185d0
CY		 1519 return ret;
1520}
1521
fbfa2cc5
JK		 1522static int expand_inode_data(struct inode *inode, loff_t offset,
1523 loff_t len, int mode)
1524{
4081363f 1525 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1526 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
f9d6d059
CY		 1527 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1528 .m_may_create = true };
e12dd7bd 1529 pgoff_t pg_end;
fbfa2cc5 1530 loff_t new_size = i_size_read(inode);
e12dd7bd 1531 loff_t off_end;
a7de6086 1532 int err;
fbfa2cc5 1533
a7de6086
JK		 1534 err = inode_newsize_ok(inode, (len + offset));
1535 if (err)
1536 return err;
fbfa2cc5 1537
a7de6086
JK		 1538 err = f2fs_convert_inline_inode(inode);
1539 if (err)
1540 return err;
9e09fc85 1541
2c4db1a6 1542 f2fs_balance_fs(sbi, true);
2a340760 1543
e12dd7bd 1544 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1545 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1546
e12dd7bd
JK		 1547 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1548 map.m_len = pg_end - map.m_lblk;
1549 if (off_end)
1550 map.m_len++;
ead43275 1551
f5a53edc
JK		 1552 if (!map.m_len)
1553 return 0;
1554
1555 if (f2fs_is_pinned_file(inode)) {
1556 block_t len = (map.m_len >> sbi->log_blocks_per_seg) <<
1557 sbi->log_blocks_per_seg;
1558 block_t done = 0;
1559
1560 if (map.m_len % sbi->blocks_per_seg)
1561 len += sbi->blocks_per_seg;
1562
1563 map.m_len = sbi->blocks_per_seg;
1564next_alloc:
1565 if (has_not_enough_free_secs(sbi, 0,
1566 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1567 mutex_lock(&sbi->gc_mutex);
1568 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1569 if (err && err != -ENODATA && err != -EAGAIN)
1570 goto out_err;
1571 }
1572
1573 down_write(&sbi->pin_sem);
1574 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1575 f2fs_allocate_new_segments(sbi, CURSEG_COLD_DATA);
1576 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1577 up_write(&sbi->pin_sem);
cad3836f 1578
f5a53edc
JK		 1579 done += map.m_len;
1580 len -= map.m_len;
1581 map.m_lblk += map.m_len;
1582 if (!err && len)
1583 goto next_alloc;
1584
1585 map.m_len = done;
1586 } else {
1587 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1588 }
1589out_err:
a7de6086 1590 if (err) {
e12dd7bd 1591 pgoff_t last_off;
fbfa2cc5 1592
e12dd7bd 1593 if (!map.m_len)
a7de6086 1594 return err;
98397ff3 1595
e12dd7bd
JK		 1596 last_off = map.m_lblk + map.m_len - 1;
1597
1598 /* update new size to the failed position */
1061fd48 1599 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1600 (loff_t)(last_off + 1) << PAGE_SHIFT;
1601 } else {
1602 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1603 }
1604
e8ed90a6
CY		 1605 if (new_size > i_size_read(inode)) {
1606 if (mode & FALLOC_FL_KEEP_SIZE)
1607 file_set_keep_isize(inode);
1608 else
1609 f2fs_i_size_write(inode, new_size);
1610 }
fbfa2cc5 1611
a7de6086 1612 return err;
fbfa2cc5
JK		 1613}
1614
1615static long f2fs_fallocate(struct file *file, int mode,
1616 loff_t offset, loff_t len)
1617{
6131ffaa 1618 struct inode *inode = file_inode(file);
587c0a42 1619 long ret = 0;
fbfa2cc5 1620
1f227a3e
JK		 1621 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1622 return -EIO;
00e09c0b
CY		 1623 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1624 return -ENOSPC;
1f227a3e 1625
c998012b
CY		 1626 /* f2fs only support ->fallocate for regular file */
1627 if (!S_ISREG(inode->i_mode))
1628 return -EINVAL;
1629
62230e0d 1630 if (IS_ENCRYPTED(inode) &&
f62185d0 1631 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1632 return -EOPNOTSUPP;
1633
b4ace337 1634 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1635 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1636 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1637 return -EOPNOTSUPP;
1638
5955102c 1639 inode_lock(inode);
3375f696 1640
587c0a42
TY		 1641 if (mode & FALLOC_FL_PUNCH_HOLE) {
1642 if (offset >= inode->i_size)
1643 goto out;
1644
a66c7b2f 1645 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1646 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1647 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1648 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1649 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1650 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1651 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1652 } else {
fbfa2cc5 1653 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1654 }
fbfa2cc5 1655
3af60a49 1656 if (!ret) {
078cd827 1657 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1658 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1659 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1660 }
3375f696 1661
587c0a42 1662out:
5955102c 1663 inode_unlock(inode);
3375f696 1664
c01e2853 1665 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1666 return ret;
1667}
1668
1e84371f
JK		 1669static int f2fs_release_file(struct inode *inode, struct file *filp)
1670{
de5307e4
JK		 1671 /*
1672 * f2fs_relase_file is called at every close calls. So we should
1673 * not drop any inmemory pages by close called by other process.
1674 */
1675 if (!(filp->f_mode & FMODE_WRITE) ||
1676 atomic_read(&inode->i_writecount) != 1)
1677 return 0;
1678
1e84371f
JK		 1679 /* some remained atomic pages should discarded */
1680 if (f2fs_is_atomic_file(inode))
4d57b86d 1681 f2fs_drop_inmem_pages(inode);
1e84371f 1682 if (f2fs_is_volatile_file(inode)) {
91942321 1683 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1684 filemap_fdatawrite(inode->i_mapping);
91942321 1685 clear_inode_flag(inode, FI_DROP_CACHE);
dfa74280
CY		 1686 clear_inode_flag(inode, FI_VOLATILE_FILE);
1687 stat_dec_volatile_write(inode);
1e84371f
JK		 1688 }
1689 return 0;
1690}
1691
7a10f017 1692static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1693{
7a10f017
JK		 1694 struct inode *inode = file_inode(file);
1695
1696 /*
1697 * If the process doing a transaction is crashed, we should do
1698 * roll-back. Otherwise, other reader/write can see corrupted database
1699 * until all the writers close its file. Since this should be done
1700 * before dropping file lock, it needs to do in ->flush.
1701 */
1702 if (f2fs_is_atomic_file(inode) &&
1703 F2FS_I(inode)->inmem_task == current)
4d57b86d 1704 f2fs_drop_inmem_pages(inode);
7a10f017 1705 return 0;
fbfa2cc5
JK		 1706}
1707
36098557 1708static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
2c1d0305
CY		 1709{
1710 struct f2fs_inode_info *fi = F2FS_I(inode);
2c1d0305
CY		 1711
1712 /* Is it quota file? Do not allow user to mess with it */
1713 if (IS_NOQUOTA(inode))
1714 return -EPERM;
1715
2c2eb7a3
DR		 1716 if ((iflags ^ fi->i_flags) & F2FS_CASEFOLD_FL) {
1717 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1718 return -EOPNOTSUPP;
1719 if (!f2fs_empty_dir(inode))
1720 return -ENOTEMPTY;
1721 }
1722
d5e5efa2 1723 fi->i_flags = iflags | (fi->i_flags & ~mask);
2c1d0305 1724
59c84408 1725 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1726 set_inode_flag(inode, FI_PROJ_INHERIT);
1727 else
1728 clear_inode_flag(inode, FI_PROJ_INHERIT);
1729
1730 inode->i_ctime = current_time(inode);
1731 f2fs_set_inode_flags(inode);
b32e0190 1732 f2fs_mark_inode_dirty_sync(inode, true);
2c1d0305
CY		 1733 return 0;
1734}
1735
36098557
EB		 1736/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1737
1738/*
1739 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1740 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1741 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1742 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1743 */
1744
1745static const struct {
1746 u32 iflag;
1747 u32 fsflag;
1748} f2fs_fsflags_map[] = {
1749 { F2FS_SYNC_FL, FS_SYNC_FL },
1750 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1751 { F2FS_APPEND_FL, FS_APPEND_FL },
1752 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1753 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1754 { F2FS_INDEX_FL, FS_INDEX_FL },
1755 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1756 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
2c2eb7a3 1757 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
36098557
EB		 1758};
1759
1760#define F2FS_GETTABLE_FS_FL ( \
1761 FS_SYNC_FL | \
1762 FS_IMMUTABLE_FL | \
1763 FS_APPEND_FL | \
1764 FS_NODUMP_FL | \
1765 FS_NOATIME_FL | \
1766 FS_INDEX_FL | \
1767 FS_DIRSYNC_FL | \
1768 FS_PROJINHERIT_FL | \
1769 FS_ENCRYPT_FL | \
1770 FS_INLINE_DATA_FL | \
95ae251f 1771 FS_NOCOW_FL | \
fbc246a1 1772 FS_VERITY_FL | \
2c2eb7a3 1773 FS_CASEFOLD_FL)
36098557
EB		 1774
1775#define F2FS_SETTABLE_FS_FL ( \
1776 FS_SYNC_FL | \
1777 FS_IMMUTABLE_FL | \
1778 FS_APPEND_FL | \
1779 FS_NODUMP_FL | \
1780 FS_NOATIME_FL | \
1781 FS_DIRSYNC_FL | \
2c2eb7a3
DR		 1782 FS_PROJINHERIT_FL | \
1783 FS_CASEFOLD_FL)
36098557
EB		 1784
1785/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1786static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1787{
1788 u32 fsflags = 0;
1789 int i;
1790
1791 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1792 if (iflags & f2fs_fsflags_map[i].iflag)
1793 fsflags |= f2fs_fsflags_map[i].fsflag;
1794
1795 return fsflags;
1796}
1797
1798/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1799static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1800{
1801 u32 iflags = 0;
1802 int i;
1803
1804 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1805 if (fsflags & f2fs_fsflags_map[i].fsflag)
1806 iflags |= f2fs_fsflags_map[i].iflag;
1807
1808 return iflags;
1809}
1810
1811static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1812{
1813 struct inode *inode = file_inode(filp);
1814 struct f2fs_inode_info *fi = F2FS_I(inode);
1815 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1816
1817 if (IS_ENCRYPTED(inode))
1818 fsflags |= FS_ENCRYPT_FL;
95ae251f
EB		 1819 if (IS_VERITY(inode))
1820 fsflags |= FS_VERITY_FL;
36098557
EB		 1821 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1822 fsflags |= FS_INLINE_DATA_FL;
1823 if (is_inode_flag_set(inode, FI_PIN_FILE))
1824 fsflags |= FS_NOCOW_FL;
1825
1826 fsflags &= F2FS_GETTABLE_FS_FL;
1827
1828 return put_user(fsflags, (int __user *)arg);
1829}
1830
52656e6c
JK		 1831static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1832{
1833 struct inode *inode = file_inode(filp);
a1f32eec
EB		 1834 struct f2fs_inode_info *fi = F2FS_I(inode);
1835 u32 fsflags, old_fsflags;
36098557 1836 u32 iflags;
52656e6c 1837 int ret;
fbfa2cc5 1838
7fb17fe4
CY		 1839 if (!inode_owner_or_capable(inode))
1840 return -EACCES;
1841
36098557 1842 if (get_user(fsflags, (int __user *)arg))
7fb17fe4
CY		 1843 return -EFAULT;
1844
36098557
EB		 1845 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1846 return -EOPNOTSUPP;
1847 fsflags &= F2FS_SETTABLE_FS_FL;
1848
1849 iflags = f2fs_fsflags_to_iflags(fsflags);
1850 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1851 return -EOPNOTSUPP;
1852
52656e6c
JK		 1853 ret = mnt_want_write_file(filp);
1854 if (ret)
1855 return ret;
fbfa2cc5 1856
5955102c 1857 inode_lock(inode);
fbfa2cc5 1858
a1f32eec
EB		 1859 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1860 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1861 if (ret)
1862 goto out;
1863
36098557
EB		 1864 ret = f2fs_setflags_common(inode, iflags,
1865 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
a1f32eec 1866out:
a72d4b97 1867 inode_unlock(inode);
52656e6c
JK		 1868 mnt_drop_write_file(filp);
1869 return ret;
1870}
4b2fecc8 1871
d49f3e89
CY		 1872static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1873{
1874 struct inode *inode = file_inode(filp);
1875
1876 return put_user(inode->i_generation, (int __user *)arg);
1877}
1878
88b88a66
JK		 1879static int f2fs_ioc_start_atomic_write(struct file *filp)
1880{
1881 struct inode *inode = file_inode(filp);
743b620c
JK		 1882 struct f2fs_inode_info *fi = F2FS_I(inode);
1883 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f4c9c743 1884 int ret;
88b88a66
JK		 1885
1886 if (!inode_owner_or_capable(inode))
1887 return -EACCES;
1888
e811898c
JK		 1889 if (!S_ISREG(inode->i_mode))
1890 return -EINVAL;
1891
038d0698
CY		 1892 if (filp->f_flags & O_DIRECT)
1893 return -EINVAL;
1894
7fb17fe4
CY		 1895 ret = mnt_want_write_file(filp);
1896 if (ret)
1897 return ret;
1898
0fac558b
CY		 1899 inode_lock(inode);
1900
455e3a58
JK		 1901 if (f2fs_is_atomic_file(inode)) {
1902 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1903 ret = -EINVAL;
7fb17fe4 1904 goto out;
455e3a58 1905 }
88b88a66 1906
f4c9c743
CY		 1907 ret = f2fs_convert_inline_inode(inode);
1908 if (ret)
7fb17fe4 1909 goto out;
88b88a66 1910
6f8d4455
JK		 1911 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1912
31867b23
JK		 1913 /*
1914 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
1915 * f2fs_is_atomic_file.
1916 */
1917 if (get_dirty_pages(inode))
dcbb4c10
JP		 1918 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
1919 inode->i_ino, get_dirty_pages(inode));
c27753d6 1920 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
6f8d4455
JK		 1921 if (ret) {
1922 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 1923 goto out;
6f8d4455 1924 }
31867b23 1925
743b620c
JK		 1926 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
1927 if (list_empty(&fi->inmem_ilist))
1928 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
677017d1 1929 sbi->atomic_files++;
743b620c
JK		 1930 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
1931
1932 /* add inode in inmem_list first and set atomic_file */
054afda9 1933 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1934 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
6f8d4455 1935 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 1936
6f8d4455 1937 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7a10f017 1938 F2FS_I(inode)->inmem_task = current;
26a28a0c
JK		 1939 stat_inc_atomic_write(inode);
1940 stat_update_max_atomic_write(inode);
684ca7e5 1941out:
0fac558b 1942 inode_unlock(inode);
7fb17fe4 1943 mnt_drop_write_file(filp);
c27753d6 1944 return ret;
88b88a66
JK		 1945}
1946
1947static int f2fs_ioc_commit_atomic_write(struct file *filp)
1948{
1949 struct inode *inode = file_inode(filp);
1950 int ret;
1951
1952 if (!inode_owner_or_capable(inode))
1953 return -EACCES;
1954
1955 ret = mnt_want_write_file(filp);
1956 if (ret)
1957 return ret;
1958
6f8d4455 1959 f2fs_balance_fs(F2FS_I_SB(inode), true);
0fac558b 1960
6f8d4455 1961 inode_lock(inode);
1dc0f899 1962
b169c3c5
CY		 1963 if (f2fs_is_volatile_file(inode)) {
1964 ret = -EINVAL;
7fb17fe4 1965 goto err_out;
b169c3c5 1966 }
7fb17fe4 1967
6282adbf 1968 if (f2fs_is_atomic_file(inode)) {
4d57b86d 1969 ret = f2fs_commit_inmem_pages(inode);
5fe45743 1970 if (ret)
edb27dee 1971 goto err_out;
5fe45743 1972
26a28a0c 1973 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
743b620c
JK		 1974 if (!ret)
1975 f2fs_drop_inmem_pages(inode);
26a28a0c 1976 } else {
774e1b78 1977 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 1978 }
edb27dee 1979err_out:
2ef79ecb
CY		 1980 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
1981 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1982 ret = -EINVAL;
1983 }
0fac558b 1984 inode_unlock(inode);
88b88a66
JK		 1985 mnt_drop_write_file(filp);
1986 return ret;
1987}
1988
02a1335f
JK		 1989static int f2fs_ioc_start_volatile_write(struct file *filp)
1990{
1991 struct inode *inode = file_inode(filp);
f4c9c743 1992 int ret;
02a1335f
JK		 1993
1994 if (!inode_owner_or_capable(inode))
1995 return -EACCES;
1996
8ff0971f
CY		 1997 if (!S_ISREG(inode->i_mode))
1998 return -EINVAL;
1999
7fb17fe4
CY		 2000 ret = mnt_want_write_file(filp);
2001 if (ret)
2002 return ret;
2003
0fac558b
CY		 2004 inode_lock(inode);
2005
1e84371f 2006 if (f2fs_is_volatile_file(inode))
7fb17fe4 2007 goto out;
1e84371f 2008
f4c9c743
CY		 2009 ret = f2fs_convert_inline_inode(inode);
2010 if (ret)
7fb17fe4 2011 goto out;
b3d208f9 2012
648d50ba
CY		 2013 stat_inc_volatile_write(inode);
2014 stat_update_max_volatile_write(inode);
2015
91942321 2016 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 2017 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2018out:
0fac558b 2019 inode_unlock(inode);
7fb17fe4
CY		 2020 mnt_drop_write_file(filp);
2021 return ret;
02a1335f
JK		 2022}
2023
1e84371f
JK		 2024static int f2fs_ioc_release_volatile_write(struct file *filp)
2025{
2026 struct inode *inode = file_inode(filp);
7fb17fe4 2027 int ret;
1e84371f
JK		 2028
2029 if (!inode_owner_or_capable(inode))
2030 return -EACCES;
2031
7fb17fe4
CY		 2032 ret = mnt_want_write_file(filp);
2033 if (ret)
2034 return ret;
2035
0fac558b
CY		 2036 inode_lock(inode);
2037
1e84371f 2038 if (!f2fs_is_volatile_file(inode))
7fb17fe4 2039 goto out;
1e84371f 2040
7fb17fe4
CY		 2041 if (!f2fs_is_first_block_written(inode)) {
2042 ret = truncate_partial_data_page(inode, 0, true);
2043 goto out;
2044 }
3c6c2beb 2045
7fb17fe4
CY		 2046 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2047out:
0fac558b 2048 inode_unlock(inode);
7fb17fe4
CY		 2049 mnt_drop_write_file(filp);
2050 return ret;
1e84371f
JK		 2051}
2052
2053static int f2fs_ioc_abort_volatile_write(struct file *filp)
2054{
2055 struct inode *inode = file_inode(filp);
2056 int ret;
2057
2058 if (!inode_owner_or_capable(inode))
2059 return -EACCES;
2060
2061 ret = mnt_want_write_file(filp);
2062 if (ret)
2063 return ret;
2064
0fac558b
CY		 2065 inode_lock(inode);
2066
26dc3d44 2067 if (f2fs_is_atomic_file(inode))
4d57b86d 2068 f2fs_drop_inmem_pages(inode);
732d5648 2069 if (f2fs_is_volatile_file(inode)) {
91942321 2070 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 2071 stat_dec_volatile_write(inode);
608514de 2072 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 2073 }
de6a8ec9 2074
455e3a58
JK		 2075 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2076
0fac558b
CY		 2077 inode_unlock(inode);
2078
1e84371f 2079 mnt_drop_write_file(filp);
d0239e1b 2080 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 2081 return ret;
2082}
2083
1abff93d
JK		 2084static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2085{
2086 struct inode *inode = file_inode(filp);
2087 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2088 struct super_block *sb = sbi->sb;
2089 __u32 in;
2a96d8ad 2090 int ret = 0;
1abff93d
JK		 2091
2092 if (!capable(CAP_SYS_ADMIN))
2093 return -EPERM;
2094
2095 if (get_user(in, (__u32 __user *)arg))
2096 return -EFAULT;
2097
60b2b4ee
ST		 2098 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2099 ret = mnt_want_write_file(filp);
2100 if (ret)
2101 return ret;
2102 }
7fb17fe4 2103
1abff93d
JK		 2104 switch (in) {
2105 case F2FS_GOING_DOWN_FULLSYNC:
2106 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 2107 if (IS_ERR(sb)) {
2108 ret = PTR_ERR(sb);
2109 goto out;
2110 }
2111 if (sb) {
38f91ca8 2112 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2113 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2114 thaw_bdev(sb->s_bdev, sb);
2115 }
2116 break;
2117 case F2FS_GOING_DOWN_METASYNC:
2118 /* do checkpoint only */
d027c484
CY		 2119 ret = f2fs_sync_fs(sb, 1);
2120 if (ret)
2121 goto out;
38f91ca8 2122 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2123 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2124 break;
2125 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 2126 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2127 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d 2128 break;
c912a829 2129 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 2130 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 2131 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2132 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
c912a829 2133 break;
0cd6d9b0
JK		 2134 case F2FS_GOING_DOWN_NEED_FSCK:
2135 set_sbi_flag(sbi, SBI_NEED_FSCK);
db610a64
JK		 2136 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2137 set_sbi_flag(sbi, SBI_IS_DIRTY);
0cd6d9b0
JK		 2138 /* do checkpoint only */
2139 ret = f2fs_sync_fs(sb, 1);
db610a64 2140 goto out;
1abff93d 2141 default:
7fb17fe4
CY		 2142 ret = -EINVAL;
2143 goto out;
1abff93d 2144 }
7950e9ac 2145
4d57b86d
CY		 2146 f2fs_stop_gc_thread(sbi);
2147 f2fs_stop_discard_thread(sbi);
7950e9ac 2148
4d57b86d 2149 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 2150 clear_opt(sbi, DISCARD);
2151
d0239e1b 2152 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 2153out:
60b2b4ee
ST		 2154 if (in != F2FS_GOING_DOWN_FULLSYNC)
2155 mnt_drop_write_file(filp);
559e87c4
CY		 2156
2157 trace_f2fs_shutdown(sbi, in, ret);
2158
7fb17fe4 2159 return ret;
1abff93d
JK		 2160}
2161
52656e6c
JK		 2162static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2163{
2164 struct inode *inode = file_inode(filp);
2165 struct super_block *sb = inode->i_sb;
2166 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2167 struct fstrim_range range;
2168 int ret;
4b2fecc8 2169
52656e6c
JK		 2170 if (!capable(CAP_SYS_ADMIN))
2171 return -EPERM;
4b2fecc8 2172
7d20c8ab 2173 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
52656e6c 2174 return -EOPNOTSUPP;
4b2fecc8 2175
52656e6c
JK		 2176 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2177 sizeof(range)))
2178 return -EFAULT;
4b2fecc8 2179
7fb17fe4
CY		 2180 ret = mnt_want_write_file(filp);
2181 if (ret)
2182 return ret;
2183
52656e6c
JK		 2184 range.minlen = max((unsigned int)range.minlen,
2185 q->limits.discard_granularity);
2186 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 2187 mnt_drop_write_file(filp);
52656e6c
JK		 2188 if (ret < 0)
2189 return ret;
4b2fecc8 2190
52656e6c
JK		 2191 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2192 sizeof(range)))
2193 return -EFAULT;
d0239e1b 2194 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 2195 return 0;
2196}
2197
f424f664
JK		 2198static bool uuid_is_nonzero(__u8 u[16])
2199{
2200 int i;
2201
2202 for (i = 0; i < 16; i++)
2203 if (u[i])
2204 return true;
2205 return false;
2206}
2207
2208static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2209{
f424f664
JK		 2210 struct inode *inode = file_inode(filp);
2211
7beb01f7 2212 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
ead710b7
CY		 2213 return -EOPNOTSUPP;
2214
d0239e1b 2215 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2216
db717d8e 2217 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 2218}
2219
2220static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2221{
7beb01f7 2222 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
ead710b7 2223 return -EOPNOTSUPP;
db717d8e 2224 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 2225}
2226
2227static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2228{
2229 struct inode *inode = file_inode(filp);
2230 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2231 int err;
2232
7beb01f7 2233 if (!f2fs_sb_has_encrypt(sbi))
f424f664
JK		 2234 return -EOPNOTSUPP;
2235
f424f664
JK		 2236 err = mnt_want_write_file(filp);
2237 if (err)
2238 return err;
2239
846ae671 2240 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2241
2242 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2243 goto got_it;
2244
f424f664
JK		 2245 /* update superblock with uuid */
2246 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2247
c5bda1c8 2248 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2249 if (err) {
2250 /* undo new data */
2251 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2252 goto out_err;
f424f664
JK		 2253 }
2254got_it:
2255 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2256 16))
d0d3f1b3
CY		 2257 err = -EFAULT;
2258out_err:
846ae671 2259 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2260 mnt_drop_write_file(filp);
2261 return err;
f424f664
JK		 2262}
2263
8ce589c7
EB		 2264static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2265 unsigned long arg)
2266{
2267 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2268 return -EOPNOTSUPP;
2269
2270 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2271}
2272
2273static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2274{
2275 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2276 return -EOPNOTSUPP;
2277
2278 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2279}
2280
2281static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2282{
2283 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2284 return -EOPNOTSUPP;
2285
2286 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2287}
2288
2289static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2290 unsigned long arg)
2291{
2292 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2293 return -EOPNOTSUPP;
2294
2295 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2296}
2297
2298static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2299 unsigned long arg)
2300{
2301 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2302 return -EOPNOTSUPP;
2303
2304 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2305}
2306
c1c1b583
CY		 2307static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2308{
2309 struct inode *inode = file_inode(filp);
2310 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2311 __u32 sync;
7fb17fe4 2312 int ret;
c1c1b583
CY		 2313
2314 if (!capable(CAP_SYS_ADMIN))
2315 return -EPERM;
2316
d530d4d8 2317 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2318 return -EFAULT;
2319
d530d4d8
CY		 2320 if (f2fs_readonly(sbi->sb))
2321 return -EROFS;
c1c1b583 2322
7fb17fe4
CY		 2323 ret = mnt_want_write_file(filp);
2324 if (ret)
2325 return ret;
2326
d530d4d8 2327 if (!sync) {
7fb17fe4
CY		 2328 if (!mutex_trylock(&sbi->gc_mutex)) {
2329 ret = -EBUSY;
2330 goto out;
2331 }
d530d4d8
CY		 2332 } else {
2333 mutex_lock(&sbi->gc_mutex);
c1c1b583
CY		 2334 }
2335
e066b83c 2336 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2337out:
2338 mnt_drop_write_file(filp);
2339 return ret;
c1c1b583
CY		 2340}
2341
34dc77ad
JK		 2342static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2343{
2344 struct inode *inode = file_inode(filp);
2345 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2346 struct f2fs_gc_range range;
2347 u64 end;
2348 int ret;
2349
2350 if (!capable(CAP_SYS_ADMIN))
2351 return -EPERM;
2352
2353 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2354 sizeof(range)))
2355 return -EFAULT;
2356
2357 if (f2fs_readonly(sbi->sb))
2358 return -EROFS;
2359
b82f6e34 2360 end = range.start + range.len;
fbbf7799
ST		 2361 if (end < range.start || range.start < MAIN_BLKADDR(sbi) ||
2362 end >= MAX_BLKADDR(sbi))
b82f6e34 2363 return -EINVAL;
b82f6e34 2364
34dc77ad
JK		 2365 ret = mnt_want_write_file(filp);
2366 if (ret)
2367 return ret;
2368
34dc77ad
JK		 2369do_more:
2370 if (!range.sync) {
2371 if (!mutex_trylock(&sbi->gc_mutex)) {
2372 ret = -EBUSY;
2373 goto out;
2374 }
2375 } else {
2376 mutex_lock(&sbi->gc_mutex);
2377 }
2378
2379 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
67b0e42b 2380 range.start += BLKS_PER_SEC(sbi);
34dc77ad
JK		 2381 if (range.start <= end)
2382 goto do_more;
2383out:
2384 mnt_drop_write_file(filp);
2385 return ret;
2386}
2387
059c0648 2388static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2389{
2390 struct inode *inode = file_inode(filp);
2391 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2392 int ret;
456b88e4
CY		 2393
2394 if (!capable(CAP_SYS_ADMIN))
2395 return -EPERM;
2396
2397 if (f2fs_readonly(sbi->sb))
2398 return -EROFS;
2399
4354994f 2400 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
dcbb4c10 2401 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
4354994f
DR		 2402 return -EINVAL;
2403 }
2404
7fb17fe4
CY		 2405 ret = mnt_want_write_file(filp);
2406 if (ret)
2407 return ret;
2408
2409 ret = f2fs_sync_fs(sbi->sb, 1);
2410
2411 mnt_drop_write_file(filp);
2412 return ret;
456b88e4
CY		 2413}
2414
d323d005
CY		 2415static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2416 struct file *filp,
2417 struct f2fs_defragment *range)
2418{
2419 struct inode *inode = file_inode(filp);
f3d98e74 2420 struct f2fs_map_blocks map = { .m_next_extent = NULL,
f4f0b677
JZ		 2421 .m_seg_type = NO_CHECK_TYPE ,
2422 .m_may_create = false };
1061fd48 2423 struct extent_info ei = {0, 0, 0};
f3d98e74 2424 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2425 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2426 unsigned int total = 0, sec_num;
d323d005
CY		 2427 block_t blk_end = 0;
2428 bool fragmented = false;
2429 int err;
2430
2431 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2432 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2433 return -EINVAL;
2434
09cbfeaf
KS		 2435 pg_start = range->start >> PAGE_SHIFT;
2436 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2437
2c4db1a6 2438 f2fs_balance_fs(sbi, true);
d323d005 2439
5955102c 2440 inode_lock(inode);
d323d005
CY		 2441
2442 /* writeback all dirty pages in the range */
2443 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2444 range->start + range->len - 1);
d323d005
CY		 2445 if (err)
2446 goto out;
2447
2448 /*
2449 * lookup mapping info in extent cache, skip defragmenting if physical
2450 * block addresses are continuous.
2451 */
2452 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2453 if (ei.fofs + ei.len >= pg_end)
2454 goto out;
2455 }
2456
2457 map.m_lblk = pg_start;
f3d98e74 2458 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2459
2460 /*
2461 * lookup mapping info in dnode page cache, skip defragmenting if all
2462 * physical block addresses are continuous even if there are hole(s)
2463 * in logical blocks.
2464 */
2465 while (map.m_lblk < pg_end) {
a1c1e9b7 2466 map.m_len = pg_end - map.m_lblk;
f2220c7f 2467 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2468 if (err)
2469 goto out;
2470
2471 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2472 map.m_lblk = next_pgofs;
d323d005
CY		 2473 continue;
2474 }
2475
25a912e5 2476 if (blk_end && blk_end != map.m_pblk)
d323d005 2477 fragmented = true;
25a912e5
CY		 2478
2479 /* record total count of block that we're going to move */
2480 total += map.m_len;
2481
d323d005
CY		 2482 blk_end = map.m_pblk + map.m_len;
2483
2484 map.m_lblk += map.m_len;
d323d005
CY		 2485 }
2486
d3a1a0e1
CY		 2487 if (!fragmented) {
2488 total = 0;
d323d005 2489 goto out;
d3a1a0e1 2490 }
d323d005 2491
f91108b8 2492 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
d323d005
CY		 2493
2494 /*
2495 * make sure there are enough free section for LFS allocation, this can
2496 * avoid defragment running in SSR mode when free section are allocated
2497 * intensively
2498 */
7f3037a5 2499 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2500 err = -EAGAIN;
2501 goto out;
2502 }
2503
25a912e5
CY		 2504 map.m_lblk = pg_start;
2505 map.m_len = pg_end - pg_start;
2506 total = 0;
2507
d323d005
CY		 2508 while (map.m_lblk < pg_end) {
2509 pgoff_t idx;
2510 int cnt = 0;
2511
2512do_map:
a1c1e9b7 2513 map.m_len = pg_end - map.m_lblk;
f2220c7f 2514 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2515 if (err)
2516 goto clear_out;
2517
2518 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2519 map.m_lblk = next_pgofs;
d3a1a0e1 2520 goto check;
d323d005
CY		 2521 }
2522
91942321 2523 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2524
2525 idx = map.m_lblk;
2526 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2527 struct page *page;
2528
4d57b86d 2529 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2530 if (IS_ERR(page)) {
2531 err = PTR_ERR(page);
2532 goto clear_out;
2533 }
2534
2535 set_page_dirty(page);
2536 f2fs_put_page(page, 1);
2537
2538 idx++;
2539 cnt++;
2540 total++;
2541 }
2542
2543 map.m_lblk = idx;
d3a1a0e1
CY		 2544check:
2545 if (map.m_lblk < pg_end && cnt < blk_per_seg)
d323d005
CY		 2546 goto do_map;
2547
91942321 2548 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2549
2550 err = filemap_fdatawrite(inode->i_mapping);
2551 if (err)
2552 goto out;
2553 }
2554clear_out:
91942321 2555 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2556out:
5955102c 2557 inode_unlock(inode);
d323d005 2558 if (!err)
09cbfeaf 2559 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2560 return err;
2561}
2562
2563static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2564{
2565 struct inode *inode = file_inode(filp);
2566 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2567 struct f2fs_defragment range;
2568 int err;
2569
2570 if (!capable(CAP_SYS_ADMIN))
2571 return -EPERM;
2572
7eab0c0d 2573 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2574 return -EINVAL;
2575
d7563861
KM		 2576 if (f2fs_readonly(sbi->sb))
2577 return -EROFS;
d323d005
CY		 2578
2579 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2580 sizeof(range)))
2581 return -EFAULT;
d323d005
CY		 2582
2583 /* verify alignment of offset & size */
d7563861
KM		 2584 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2585 return -EINVAL;
d323d005 2586
1941d7bc 2587 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2588 sbi->max_file_blocks))
2589 return -EINVAL;
2590
2591 err = mnt_want_write_file(filp);
2592 if (err)
2593 return err;
1941d7bc 2594
d323d005 2595 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2596 mnt_drop_write_file(filp);
2597
d0239e1b 2598 f2fs_update_time(sbi, REQ_TIME);
d323d005 2599 if (err < 0)
d7563861 2600 return err;
d323d005
CY		 2601
2602 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2603 sizeof(range)))
d7563861
KM		 2604 return -EFAULT;
2605
2606 return 0;
d323d005
CY		 2607}
2608
4dd6f977
JK		 2609static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2610 struct file *file_out, loff_t pos_out, size_t len)
2611{
2612 struct inode *src = file_inode(file_in);
2613 struct inode *dst = file_inode(file_out);
2614 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2615 size_t olen = len, dst_max_i_size = 0;
2616 size_t dst_osize;
2617 int ret;
2618
2619 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2620 src->i_sb != dst->i_sb)
2621 return -EXDEV;
2622
2623 if (unlikely(f2fs_readonly(src->i_sb)))
2624 return -EROFS;
2625
fe8494bf
CY		 2626 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2627 return -EINVAL;
4dd6f977 2628
62230e0d 2629 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
4dd6f977
JK		 2630 return -EOPNOTSUPP;
2631
d95fd91c
FL		 2632 if (src == dst) {
2633 if (pos_in == pos_out)
2634 return 0;
2635 if (pos_out > pos_in && pos_out < pos_in + len)
2636 return -EINVAL;
2637 }
2638
4dd6f977 2639 inode_lock(src);
20a3d61d 2640 if (src != dst) {
bb06664a
CY		 2641 ret = -EBUSY;
2642 if (!inode_trylock(dst))
2643 goto out;
20a3d61d 2644 }
4dd6f977
JK		 2645
2646 ret = -EINVAL;
2647 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2648 goto out_unlock;
2649 if (len == 0)
2650 olen = len = src->i_size - pos_in;
2651 if (pos_in + len == src->i_size)
2652 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2653 if (len == 0) {
2654 ret = 0;
2655 goto out_unlock;
2656 }
2657
2658 dst_osize = dst->i_size;
2659 if (pos_out + olen > dst->i_size)
2660 dst_max_i_size = pos_out + olen;
2661
2662 /* verify the end result is block aligned */
2663 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2664 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2665 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2666 goto out_unlock;
2667
2668 ret = f2fs_convert_inline_inode(src);
2669 if (ret)
2670 goto out_unlock;
2671
2672 ret = f2fs_convert_inline_inode(dst);
2673 if (ret)
2674 goto out_unlock;
2675
2676 /* write out all dirty pages from offset */
2677 ret = filemap_write_and_wait_range(src->i_mapping,
2678 pos_in, pos_in + len);
2679 if (ret)
2680 goto out_unlock;
2681
2682 ret = filemap_write_and_wait_range(dst->i_mapping,
2683 pos_out, pos_out + len);
2684 if (ret)
2685 goto out_unlock;
2686
2687 f2fs_balance_fs(sbi, true);
6f8d4455
JK		 2688
2689 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2690 if (src != dst) {
2691 ret = -EBUSY;
2692 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2693 goto out_src;
2694 }
2695
4dd6f977 2696 f2fs_lock_op(sbi);
61e4da11
FL		 2697 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2698 pos_out >> F2FS_BLKSIZE_BITS,
2699 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2700
2701 if (!ret) {
2702 if (dst_max_i_size)
2703 f2fs_i_size_write(dst, dst_max_i_size);
2704 else if (dst_osize != dst->i_size)
2705 f2fs_i_size_write(dst, dst_osize);
2706 }
2707 f2fs_unlock_op(sbi);
6f8d4455
JK		 2708
2709 if (src != dst)
b2532c69 2710 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
6f8d4455
JK		 2711out_src:
2712 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2713out_unlock:
2714 if (src != dst)
4dd6f977 2715 inode_unlock(dst);
20a3d61d 2716out:
4dd6f977
JK		 2717 inode_unlock(src);
2718 return ret;
2719}
2720
2721static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2722{
2723 struct f2fs_move_range range;
2724 struct fd dst;
2725 int err;
2726
2727 if (!(filp->f_mode & FMODE_READ) ||
2728 !(filp->f_mode & FMODE_WRITE))
2729 return -EBADF;
2730
2731 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2732 sizeof(range)))
2733 return -EFAULT;
2734
2735 dst = fdget(range.dst_fd);
2736 if (!dst.file)
2737 return -EBADF;
2738
2739 if (!(dst.file->f_mode & FMODE_WRITE)) {
2740 err = -EBADF;
2741 goto err_out;
2742 }
2743
2744 err = mnt_want_write_file(filp);
2745 if (err)
2746 goto err_out;
2747
2748 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2749 range.pos_out, range.len);
2750
2751 mnt_drop_write_file(filp);
3cecfa5f
KM		 2752 if (err)
2753 goto err_out;
4dd6f977
JK		 2754
2755 if (copy_to_user((struct f2fs_move_range __user *)arg,
2756 &range, sizeof(range)))
2757 err = -EFAULT;
2758err_out:
2759 fdput(dst);
2760 return err;
2761}
2762
e066b83c
JK		 2763static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2764{
2765 struct inode *inode = file_inode(filp);
2766 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2767 struct sit_info *sm = SIT_I(sbi);
2768 unsigned int start_segno = 0, end_segno = 0;
2769 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2770 struct f2fs_flush_device range;
2771 int ret;
2772
2773 if (!capable(CAP_SYS_ADMIN))
2774 return -EPERM;
2775
2776 if (f2fs_readonly(sbi->sb))
2777 return -EROFS;
2778
4354994f
DR		 2779 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2780 return -EINVAL;
2781
e066b83c
JK		 2782 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2783 sizeof(range)))
2784 return -EFAULT;
2785
0916878d 2786 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2c70c5e3 2787 __is_large_section(sbi)) {
dcbb4c10
JP		 2788 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2789 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
e066b83c
JK		 2790 return -EINVAL;
2791 }
2792
2793 ret = mnt_want_write_file(filp);
2794 if (ret)
2795 return ret;
2796
2797 if (range.dev_num != 0)
2798 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2799 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2800
2801 start_segno = sm->last_victim[FLUSH_DEVICE];
2802 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2803 start_segno = dev_start_segno;
2804 end_segno = min(start_segno + range.segments, dev_end_segno);
2805
2806 while (start_segno < end_segno) {
2807 if (!mutex_trylock(&sbi->gc_mutex)) {
2808 ret = -EBUSY;
2809 goto out;
2810 }
2811 sm->last_victim[GC_CB] = end_segno + 1;
2812 sm->last_victim[GC_GREEDY] = end_segno + 1;
2813 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2814 ret = f2fs_gc(sbi, true, true, start_segno);
2815 if (ret == -EAGAIN)
2816 ret = 0;
2817 else if (ret < 0)
2818 break;
2819 start_segno++;
2820 }
2821out:
2822 mnt_drop_write_file(filp);
2823 return ret;
2824}
2825
e65ef207
JK		 2826static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2827{
2828 struct inode *inode = file_inode(filp);
2829 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2830
2831 /* Must validate to set it with SQLite behavior in Android. */
2832 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2833
2834 return put_user(sb_feature, (u32 __user *)arg);
2835}
e066b83c 2836
2c1d0305 2837#ifdef CONFIG_QUOTA
78130819
CY		 2838int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2839{
2840 struct dquot *transfer_to[MAXQUOTAS] = {};
2841 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2842 struct super_block *sb = sbi->sb;
2843 int err = 0;
2844
2845 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2846 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2847 err = __dquot_transfer(inode, transfer_to);
2848 if (err)
2849 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2850 dqput(transfer_to[PRJQUOTA]);
2851 }
2852 return err;
2853}
2854
2c1d0305
CY		 2855static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2856{
2857 struct inode *inode = file_inode(filp);
2858 struct f2fs_inode_info *fi = F2FS_I(inode);
2859 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2c1d0305
CY		 2860 struct page *ipage;
2861 kprojid_t kprojid;
2862 int err;
2863
7beb01f7 2864 if (!f2fs_sb_has_project_quota(sbi)) {
2c1d0305
CY		 2865 if (projid != F2FS_DEF_PROJID)
2866 return -EOPNOTSUPP;
2867 else
2868 return 0;
2869 }
2870
2871 if (!f2fs_has_extra_attr(inode))
2872 return -EOPNOTSUPP;
2873
2874 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2875
2876 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2877 return 0;
2878
2c1d0305 2879 err = -EPERM;
2c1d0305
CY		 2880 /* Is it quota file? Do not allow user to mess with it */
2881 if (IS_NOQUOTA(inode))
c8e92757 2882 return err;
2c1d0305 2883
4d57b86d 2884 ipage = f2fs_get_node_page(sbi, inode->i_ino);
c8e92757
WS		 2885 if (IS_ERR(ipage))
2886 return PTR_ERR(ipage);
2c1d0305
CY		 2887
2888 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2889 i_projid)) {
2890 err = -EOVERFLOW;
2891 f2fs_put_page(ipage, 1);
c8e92757 2892 return err;
2c1d0305
CY		 2893 }
2894 f2fs_put_page(ipage, 1);
2895
c22aecd7
CY		 2896 err = dquot_initialize(inode);
2897 if (err)
c8e92757 2898 return err;
2c1d0305 2899
78130819
CY		 2900 f2fs_lock_op(sbi);
2901 err = f2fs_transfer_project_quota(inode, kprojid);
2902 if (err)
2903 goto out_unlock;
2c1d0305
CY		 2904
2905 F2FS_I(inode)->i_projid = kprojid;
2906 inode->i_ctime = current_time(inode);
2c1d0305 2907 f2fs_mark_inode_dirty_sync(inode, true);
78130819
CY		 2908out_unlock:
2909 f2fs_unlock_op(sbi);
2c1d0305
CY		 2910 return err;
2911}
2912#else
78130819
CY		 2913int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2914{
2915 return 0;
2916}
2917
2c1d0305
CY		 2918static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2919{
2920 if (projid != F2FS_DEF_PROJID)
2921 return -EOPNOTSUPP;
2922 return 0;
2923}
2924#endif
2925
36098557
EB		 2926/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
2927
2928/*
2929 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
2930 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
2931 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
2932 */
2933
2934static const struct {
2935 u32 iflag;
2936 u32 xflag;
2937} f2fs_xflags_map[] = {
2938 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
2939 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
2940 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
2941 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
2942 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
2943 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
2944};
2945
2946#define F2FS_SUPPORTED_XFLAGS ( \
2947 FS_XFLAG_SYNC | \
2948 FS_XFLAG_IMMUTABLE | \
2949 FS_XFLAG_APPEND | \
2950 FS_XFLAG_NODUMP | \
2951 FS_XFLAG_NOATIME | \
2952 FS_XFLAG_PROJINHERIT)
2953
2954/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
2955static inline u32 f2fs_iflags_to_xflags(u32 iflags)
2956{
2957 u32 xflags = 0;
2958 int i;
2959
2960 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
2961 if (iflags & f2fs_xflags_map[i].iflag)
2962 xflags |= f2fs_xflags_map[i].xflag;
2963
2c1d0305
CY		 2964 return xflags;
2965}
2966
36098557
EB		 2967/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
2968static inline u32 f2fs_xflags_to_iflags(u32 xflags)
2c1d0305 2969{
36098557
EB		 2970 u32 iflags = 0;
2971 int i;
2c1d0305 2972
36098557
EB		 2973 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
2974 if (xflags & f2fs_xflags_map[i].xflag)
2975 iflags |= f2fs_xflags_map[i].iflag;
2c1d0305
CY		 2976
2977 return iflags;
2978}
2979
6fc93c4e 2980static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
2c1d0305 2981{
2c1d0305 2982 struct f2fs_inode_info *fi = F2FS_I(inode);
2c1d0305 2983
6fc93c4e 2984 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
2c1d0305 2985
7beb01f7 2986 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
6fc93c4e 2987 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
2c1d0305
CY		 2988}
2989
6fc93c4e 2990static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
c8e92757 2991{
6fc93c4e
EB		 2992 struct inode *inode = file_inode(filp);
2993 struct fsxattr fa;
c8e92757 2994
6fc93c4e 2995 f2fs_fill_fsxattr(inode, &fa);
c8e92757 2996
6fc93c4e
EB		 2997 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2998 return -EFAULT;
c8e92757
WS		 2999 return 0;
3000}
3001
2c1d0305
CY		 3002static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
3003{
3004 struct inode *inode = file_inode(filp);
6fc93c4e 3005 struct fsxattr fa, old_fa;
36098557 3006 u32 iflags;
2c1d0305
CY		 3007 int err;
3008
3009 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
3010 return -EFAULT;
3011
3012 /* Make sure caller has proper permission */
3013 if (!inode_owner_or_capable(inode))
3014 return -EACCES;
3015
36098557 3016 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
2c1d0305
CY		 3017 return -EOPNOTSUPP;
3018
36098557
EB		 3019 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
3020 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
2c1d0305
CY		 3021 return -EOPNOTSUPP;
3022
3023 err = mnt_want_write_file(filp);
3024 if (err)
3025 return err;
3026
3027 inode_lock(inode);
6fc93c4e
EB		 3028
3029 f2fs_fill_fsxattr(inode, &old_fa);
3030 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
c8e92757
WS		 3031 if (err)
3032 goto out;
6fc93c4e 3033
36098557
EB		 3034 err = f2fs_setflags_common(inode, iflags,
3035 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
2c1d0305 3036 if (err)
c8e92757 3037 goto out;
2c1d0305
CY		 3038
3039 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
c8e92757
WS		 3040out:
3041 inode_unlock(inode);
3042 mnt_drop_write_file(filp);
3043 return err;
2c1d0305 3044}
e066b83c 3045
1ad71a27
JK		 3046int f2fs_pin_file_control(struct inode *inode, bool inc)
3047{
3048 struct f2fs_inode_info *fi = F2FS_I(inode);
3049 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3050
3051 /* Use i_gc_failures for normal file as a risk signal. */
3052 if (inc)
2ef79ecb
CY		 3053 f2fs_i_gc_failures_write(inode,
3054 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 3055
2ef79ecb 3056 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
dcbb4c10
JP		 3057 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3058 __func__, inode->i_ino,
3059 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 3060 clear_inode_flag(inode, FI_PIN_FILE);
3061 return -EAGAIN;
3062 }
3063 return 0;
3064}
3065
3066static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3067{
3068 struct inode *inode = file_inode(filp);
3069 __u32 pin;
3070 int ret = 0;
3071
1ad71a27
JK		 3072 if (get_user(pin, (__u32 __user *)arg))
3073 return -EFAULT;
3074
3075 if (!S_ISREG(inode->i_mode))
3076 return -EINVAL;
3077
3078 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3079 return -EROFS;
3080
3081 ret = mnt_want_write_file(filp);
3082 if (ret)
3083 return ret;
3084
3085 inode_lock(inode);
3086
4d57b86d 3087 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 3088 ret = -EINVAL;
3089 goto out;
3090 }
3091
1ad71a27
JK		 3092 if (!pin) {
3093 clear_inode_flag(inode, FI_PIN_FILE);
30933364 3094 f2fs_i_gc_failures_write(inode, 0);
1ad71a27
JK		 3095 goto done;
3096 }
3097
3098 if (f2fs_pin_file_control(inode, false)) {
3099 ret = -EAGAIN;
3100 goto out;
3101 }
3102 ret = f2fs_convert_inline_inode(inode);
3103 if (ret)
3104 goto out;
3105
3106 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 3107 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3108done:
3109 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3110out:
3111 inode_unlock(inode);
3112 mnt_drop_write_file(filp);
3113 return ret;
3114}
3115
3116static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3117{
3118 struct inode *inode = file_inode(filp);
3119 __u32 pin = 0;
3120
3121 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 3122 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3123 return put_user(pin, (u32 __user *)arg);
3124}
3125
c4020b2d
CY		 3126int f2fs_precache_extents(struct inode *inode)
3127{
3128 struct f2fs_inode_info *fi = F2FS_I(inode);
3129 struct f2fs_map_blocks map;
3130 pgoff_t m_next_extent;
3131 loff_t end;
3132 int err;
3133
3134 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3135 return -EOPNOTSUPP;
3136
3137 map.m_lblk = 0;
3138 map.m_next_pgofs = NULL;
3139 map.m_next_extent = &m_next_extent;
3140 map.m_seg_type = NO_CHECK_TYPE;
f4f0b677 3141 map.m_may_create = false;
c4020b2d
CY		 3142 end = F2FS_I_SB(inode)->max_file_blocks;
3143
3144 while (map.m_lblk < end) {
3145 map.m_len = end - map.m_lblk;
3146
b2532c69 3147 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 3148 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 3149 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 3150 if (err)
3151 return err;
3152
3153 map.m_lblk = m_next_extent;
3154 }
3155
3156 return err;
3157}
3158
3159static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3160{
3161 return f2fs_precache_extents(file_inode(filp));
3162}
3163
04f0b2ea
QS		 3164static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3165{
3166 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3167 __u64 block_count;
3168 int ret;
3169
3170 if (!capable(CAP_SYS_ADMIN))
3171 return -EPERM;
3172
3173 if (f2fs_readonly(sbi->sb))
3174 return -EROFS;
3175
3176 if (copy_from_user(&block_count, (void __user *)arg,
3177 sizeof(block_count)))
3178 return -EFAULT;
3179
3180 ret = f2fs_resize_fs(sbi, block_count);
3181
3182 return ret;
3183}
3184
95ae251f
EB		 3185static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3186{
3187 struct inode *inode = file_inode(filp);
3188
3189 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3190
3191 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3192 f2fs_warn(F2FS_I_SB(inode),
3193 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3194 inode->i_ino);
3195 return -EOPNOTSUPP;
3196 }
3197
3198 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3199}
3200
3201static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3202{
3203 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3204 return -EOPNOTSUPP;
3205
3206 return fsverity_ioctl_measure(filp, (void __user *)arg);
3207}
3208
4507847c
CY		 3209static int f2fs_get_volume_name(struct file *filp, unsigned long arg)
3210{
3211 struct inode *inode = file_inode(filp);
3212 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3213 char *vbuf;
3214 int count;
3215 int err = 0;
3216
3217 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3218 if (!vbuf)
3219 return -ENOMEM;
3220
3221 down_read(&sbi->sb_lock);
3222 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3223 ARRAY_SIZE(sbi->raw_super->volume_name),
3224 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3225 up_read(&sbi->sb_lock);
3226
3227 if (copy_to_user((char __user *)arg, vbuf,
3228 min(FSLABEL_MAX, count)))
3229 err = -EFAULT;
3230
3231 kvfree(vbuf);
3232 return err;
3233}
3234
3235static int f2fs_set_volume_name(struct file *filp, unsigned long arg)
3236{
3237 struct inode *inode = file_inode(filp);
3238 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3239 char *vbuf;
3240 int err = 0;
3241
3242 if (!capable(CAP_SYS_ADMIN))
3243 return -EPERM;
3244
3245 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3246 if (IS_ERR(vbuf))
3247 return PTR_ERR(vbuf);
3248
3249 err = mnt_want_write_file(filp);
3250 if (err)
3251 goto out;
3252
3253 down_write(&sbi->sb_lock);
3254
3255 memset(sbi->raw_super->volume_name, 0,
3256 sizeof(sbi->raw_super->volume_name));
3257 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3258 sbi->raw_super->volume_name,
3259 ARRAY_SIZE(sbi->raw_super->volume_name));
3260
3261 err = f2fs_commit_super(sbi, false);
3262
3263 up_write(&sbi->sb_lock);
3264
3265 mnt_drop_write_file(filp);
3266out:
3267 kfree(vbuf);
3268 return err;
3269}
3270
52656e6c
JK		 3271long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3272{
1f227a3e
JK		 3273 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
3274 return -EIO;
00e09c0b
CY		 3275 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
3276 return -ENOSPC;
1f227a3e 3277
52656e6c
JK		 3278 switch (cmd) {
3279 case F2FS_IOC_GETFLAGS:
3280 return f2fs_ioc_getflags(filp, arg);
3281 case F2FS_IOC_SETFLAGS:
3282 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 3283 case F2FS_IOC_GETVERSION:
3284 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 3285 case F2FS_IOC_START_ATOMIC_WRITE:
3286 return f2fs_ioc_start_atomic_write(filp);
3287 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3288 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 3289 case F2FS_IOC_START_VOLATILE_WRITE:
3290 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 3291 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3292 return f2fs_ioc_release_volatile_write(filp);
3293 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3294 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 3295 case F2FS_IOC_SHUTDOWN:
3296 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 3297 case FITRIM:
3298 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 3299 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3300 return f2fs_ioc_set_encryption_policy(filp, arg);
3301 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3302 return f2fs_ioc_get_encryption_policy(filp, arg);
3303 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3304 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
8ce589c7
EB		 3305 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3306 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
3307 case FS_IOC_ADD_ENCRYPTION_KEY:
3308 return f2fs_ioc_add_encryption_key(filp, arg);
3309 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3310 return f2fs_ioc_remove_encryption_key(filp, arg);
3311 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3312 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
3313 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3314 return f2fs_ioc_get_encryption_key_status(filp, arg);
c1c1b583
CY		 3315 case F2FS_IOC_GARBAGE_COLLECT:
3316 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 3317 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3318 return f2fs_ioc_gc_range(filp, arg);
456b88e4 3319 case F2FS_IOC_WRITE_CHECKPOINT:
059c0648 3320 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 3321 case F2FS_IOC_DEFRAGMENT:
3322 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 3323 case F2FS_IOC_MOVE_RANGE:
3324 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 3325 case F2FS_IOC_FLUSH_DEVICE:
3326 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 3327 case F2FS_IOC_GET_FEATURES:
3328 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 3329 case F2FS_IOC_FSGETXATTR:
3330 return f2fs_ioc_fsgetxattr(filp, arg);
3331 case F2FS_IOC_FSSETXATTR:
3332 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 3333 case F2FS_IOC_GET_PIN_FILE:
3334 return f2fs_ioc_get_pin_file(filp, arg);
3335 case F2FS_IOC_SET_PIN_FILE:
3336 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 3337 case F2FS_IOC_PRECACHE_EXTENTS:
3338 return f2fs_ioc_precache_extents(filp, arg);
04f0b2ea
QS		 3339 case F2FS_IOC_RESIZE_FS:
3340 return f2fs_ioc_resize_fs(filp, arg);
95ae251f
EB		 3341 case FS_IOC_ENABLE_VERITY:
3342 return f2fs_ioc_enable_verity(filp, arg);
3343 case FS_IOC_MEASURE_VERITY:
3344 return f2fs_ioc_measure_verity(filp, arg);
4507847c
CY		 3345 case F2FS_IOC_GET_VOLUME_NAME:
3346 return f2fs_get_volume_name(filp, arg);
3347 case F2FS_IOC_SET_VOLUME_NAME:
3348 return f2fs_set_volume_name(filp, arg);
fbfa2cc5
JK		 3349 default:
3350 return -ENOTTY;
3351 }
3352}
3353
fcc85a4d
JK		 3354static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
3355{
b439b103
JK		 3356 struct file *file = iocb->ki_filp;
3357 struct inode *inode = file_inode(file);
3358 ssize_t ret;
fcc85a4d 3359
126ce721
CY		 3360 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
3361 ret = -EIO;
3362 goto out;
3363 }
1f227a3e 3364
cb8434f1
GR		 3365 if (iocb->ki_flags & IOCB_NOWAIT) {
3366 if (!inode_trylock(inode)) {
126ce721
CY		 3367 ret = -EAGAIN;
3368 goto out;
3369 }
cb8434f1 3370 } else {
b91050a8
HL		 3371 inode_lock(inode);
3372 }
3373
b439b103
JK		 3374 ret = generic_write_checks(iocb, from);
3375 if (ret > 0) {
dc7a10dd
JK		 3376 bool preallocated = false;
3377 size_t target_size = 0;
dc91de78 3378 int err;
a7de6086 3379
dc91de78
JK		 3380 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
3381 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 3382
d5d5f0c0
CX		 3383 if ((iocb->ki_flags & IOCB_NOWAIT)) {
3384 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
b91050a8 3385 iov_iter_count(from)) ||
d5d5f0c0
CX		 3386 f2fs_has_inline_data(inode) ||
3387 f2fs_force_buffered_io(inode, iocb, from)) {
3388 clear_inode_flag(inode, FI_NO_PREALLOC);
3389 inode_unlock(inode);
3390 ret = -EAGAIN;
3391 goto out;
3392 }
47501f87
JK		 3393 goto write;
3394 }
dc7a10dd 3395
47501f87
JK		 3396 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
3397 goto write;
3398
3399 if (iocb->ki_flags & IOCB_DIRECT) {
3400 /*
3401 * Convert inline data for Direct I/O before entering
3402 * f2fs_direct_IO().
3403 */
3404 err = f2fs_convert_inline_inode(inode);
3405 if (err)
3406 goto out_err;
3407 /*
3408 * If force_buffere_io() is true, we have to allocate
3409 * blocks all the time, since f2fs_direct_IO will fall
3410 * back to buffered IO.
3411 */
3412 if (!f2fs_force_buffered_io(inode, iocb, from) &&
3413 allow_outplace_dio(inode, iocb, from))
3414 goto write;
3415 }
3416 preallocated = true;
3417 target_size = iocb->ki_pos + iov_iter_count(from);
3418
3419 err = f2fs_preallocate_blocks(iocb, from);
3420 if (err) {
3421out_err:
3422 clear_inode_flag(inode, FI_NO_PREALLOC);
3423 inode_unlock(inode);
3424 ret = err;
3425 goto out;
9dfa1baf 3426 }
47501f87 3427write:
a7de6086 3428 ret = __generic_file_write_iter(iocb, from);
dc91de78 3429 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 3430
dc7a10dd
JK		 3431 /* if we couldn't write data, we should deallocate blocks. */
3432 if (preallocated && i_size_read(inode) < target_size)
3433 f2fs_truncate(inode);
3434
b0af6d49
CY		 3435 if (ret > 0)
3436 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 3437 }
3438 inode_unlock(inode);
126ce721
CY		 3439out:
3440 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
3441 iov_iter_count(from), ret);
e2592217
CH		 3442 if (ret > 0)
3443 ret = generic_write_sync(iocb, ret);
b439b103 3444 return ret;
fcc85a4d
JK		 3445}
3446
e9750824
NJ		 3447#ifdef CONFIG_COMPAT
3448long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3449{
3450 switch (cmd) {
3451 case F2FS_IOC32_GETFLAGS:
3452 cmd = F2FS_IOC_GETFLAGS;
3453 break;
3454 case F2FS_IOC32_SETFLAGS:
3455 cmd = F2FS_IOC_SETFLAGS;
3456 break;
04ef4b62
CY		 3457 case F2FS_IOC32_GETVERSION:
3458 cmd = F2FS_IOC_GETVERSION;
3459 break;
3460 case F2FS_IOC_START_ATOMIC_WRITE:
3461 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3462 case F2FS_IOC_START_VOLATILE_WRITE:
3463 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3464 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3465 case F2FS_IOC_SHUTDOWN:
314999dc 3466 case FITRIM:
04ef4b62
CY		 3467 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3468 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3469 case F2FS_IOC_GET_ENCRYPTION_POLICY:
8ce589c7
EB		 3470 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3471 case FS_IOC_ADD_ENCRYPTION_KEY:
3472 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3473 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3474 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
04ef4b62 3475 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 3476 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 3477 case F2FS_IOC_WRITE_CHECKPOINT:
3478 case F2FS_IOC_DEFRAGMENT:
4dd6f977 3479 case F2FS_IOC_MOVE_RANGE:
e066b83c 3480 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 3481 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 3482 case F2FS_IOC_FSGETXATTR:
3483 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 3484 case F2FS_IOC_GET_PIN_FILE:
3485 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 3486 case F2FS_IOC_PRECACHE_EXTENTS:
04f0b2ea 3487 case F2FS_IOC_RESIZE_FS:
95ae251f
EB		 3488 case FS_IOC_ENABLE_VERITY:
3489 case FS_IOC_MEASURE_VERITY:
4507847c
CY		 3490 case F2FS_IOC_GET_VOLUME_NAME:
3491 case F2FS_IOC_SET_VOLUME_NAME:
4dd6f977 3492 break;
e9750824
NJ		 3493 default:
3494 return -ENOIOCTLCMD;
3495 }
3496 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3497}
3498#endif
3499
fbfa2cc5 3500const struct file_operations f2fs_file_operations = {
267378d4 3501 .llseek = f2fs_llseek,
aad4f8bb 3502 .read_iter = generic_file_read_iter,
fcc85a4d
JK		 3503 .write_iter = f2fs_file_write_iter,
3504 .open = f2fs_file_open,
12662234 3505 .release = f2fs_release_file,
fbfa2cc5 3506 .mmap = f2fs_file_mmap,
7a10f017 3507 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3508 .fsync = f2fs_sync_file,
3509 .fallocate = f2fs_fallocate,
3510 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3511#ifdef CONFIG_COMPAT
3512 .compat_ioctl = f2fs_compat_ioctl,
3513#endif
fbfa2cc5 3514 .splice_read = generic_file_splice_read,
8d020765 3515 .splice_write = iter_file_splice_write,
fbfa2cc5 3516};
Linux 6.x block layer and io_uring tree(s)