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[linux-2.6-block.git] / fs / f2fs / file.c
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7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
fbfa2cc5
JK		 3 * fs/f2fs/file.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
fbfa2cc5
JK		 7 */
8#include <linux/fs.h>
9#include <linux/f2fs_fs.h>
10#include <linux/stat.h>
11#include <linux/buffer_head.h>
12#include <linux/writeback.h>
ae51fb31 13#include <linux/blkdev.h>
fbfa2cc5
JK		 14#include <linux/falloc.h>
15#include <linux/types.h>
e9750824 16#include <linux/compat.h>
fbfa2cc5
JK		 17#include <linux/uaccess.h>
18#include <linux/mount.h>
7f7670fe 19#include <linux/pagevec.h>
dc91de78 20#include <linux/uio.h>
8da4b8c4 21#include <linux/uuid.h>
4dd6f977 22#include <linux/file.h>
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);
39a86958 53 struct dnode_of_data dn = { .node_changed = false };
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
fbfa2cc5 66 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 67
68 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 69
11bac800 70 file_update_time(vmf->vma->vm_file);
5a3a2d83 71 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 72 lock_page(page);
6bacf52f 73 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 74 page_offset(page) > i_size_read(inode) ||
6bacf52f 75 !PageUptodate(page))) {
fbfa2cc5
JK		 76 unlock_page(page);
77 err = -EFAULT;
5a3a2d83 78 goto out_sem;
fbfa2cc5
JK		 79 }
80
39a86958
CY		 81 /* block allocation */
82 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
83 set_new_dnode(&dn, inode, NULL, NULL, 0);
84 err = f2fs_get_block(&dn, page->index);
85 f2fs_put_dnode(&dn);
86 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
87 if (err) {
88 unlock_page(page);
89 goto out_sem;
90 }
91
92 /* fill the page */
bae0ee7a 93 f2fs_wait_on_page_writeback(page, DATA, false, true);
39a86958
CY		 94
95 /* wait for GCed page writeback via META_MAPPING */
96 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
97
fbfa2cc5
JK		 98 /*
99 * check to see if the page is mapped already (no holes)
100 */
101 if (PageMappedToDisk(page))
39a86958 102 goto out_sem;
fbfa2cc5
JK		 103
104 /* page is wholly or partially inside EOF */
09cbfeaf 105 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 106 i_size_read(inode)) {
193bea1d 107 loff_t offset;
f11e98bd 108
09cbfeaf
KS		 109 offset = i_size_read(inode) & ~PAGE_MASK;
110 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 111 }
112 set_page_dirty(page);
237c0790
JK		 113 if (!PageUptodate(page))
114 SetPageUptodate(page);
fbfa2cc5 115
b0af6d49 116 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
c75f2feb 117 f2fs_update_time(sbi, REQ_TIME);
b0af6d49 118
e943a10d 119 trace_f2fs_vm_page_mkwrite(page, DATA);
5a3a2d83
QS		 120out_sem:
121 up_read(&F2FS_I(inode)->i_mmap_sem);
39a86958
CY		 122
123 f2fs_balance_fs(sbi, dn.node_changed);
124
fbfa2cc5 125 sb_end_pagefault(inode->i_sb);
1f227a3e 126err:
fbfa2cc5
JK		 127 return block_page_mkwrite_return(err);
128}
129
130static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 131 .fault = f2fs_filemap_fault,
f1820361 132 .map_pages = filemap_map_pages,
692bb55d 133 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 134};
135
354a3399
JK		 136static int get_parent_ino(struct inode *inode, nid_t *pino)
137{
138 struct dentry *dentry;
139
140 inode = igrab(inode);
141 dentry = d_find_any_alias(inode);
142 iput(inode);
143 if (!dentry)
144 return 0;
145
f0947e5c
JK		 146 *pino = parent_ino(dentry);
147 dput(dentry);
354a3399
JK		 148 return 1;
149}
150
a5fd5050 151static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 152{
4081363f 153 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 154 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 155
a5fd5050
CY		 156 if (!S_ISREG(inode->i_mode))
157 cp_reason = CP_NON_REGULAR;
158 else if (inode->i_nlink != 1)
159 cp_reason = CP_HARDLINK;
bbf156f7 160 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 161 cp_reason = CP_SB_NEED_CP;
9d1589ef 162 else if (file_wrong_pino(inode))
a5fd5050 163 cp_reason = CP_WRONG_PINO;
4d57b86d 164 else if (!f2fs_space_for_roll_forward(sbi))
a5fd5050 165 cp_reason = CP_NO_SPC_ROLL;
4d57b86d 166 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 167 cp_reason = CP_NODE_NEED_CP;
d5053a34 168 else if (test_opt(sbi, FASTBOOT))
a5fd5050 169 cp_reason = CP_FASTBOOT_MODE;
63189b78 170 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 171 cp_reason = CP_SPEC_LOG_NUM;
63189b78 172 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
4d57b86d
CY		 173 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
174 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
175 TRANS_DIR_INO))
0a007b97 176 cp_reason = CP_RECOVER_DIR;
9d1589ef 177
a5fd5050 178 return cp_reason;
9d1589ef
CY		 179}
180
9c7bb702
CL		 181static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
182{
183 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
184 bool ret = false;
185 /* But we need to avoid that there are some inode updates */
4d57b86d 186 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
9c7bb702
CL		 187 ret = true;
188 f2fs_put_page(i, 0);
189 return ret;
190}
191
51455b19
CL		 192static void try_to_fix_pino(struct inode *inode)
193{
194 struct f2fs_inode_info *fi = F2FS_I(inode);
195 nid_t pino;
196
197 down_write(&fi->i_sem);
51455b19
CL		 198 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
199 get_parent_ino(inode, &pino)) {
205b9822 200 f2fs_i_pino_write(inode, pino);
51455b19 201 file_got_pino(inode);
51455b19 202 }
ee6d182f 203 up_write(&fi->i_sem);
51455b19
CL		 204}
205
608514de
JK		 206static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
207 int datasync, bool atomic)
fbfa2cc5
JK		 208{
209 struct inode *inode = file->f_mapping->host;
4081363f 210 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 211 nid_t ino = inode->i_ino;
fbfa2cc5 212 int ret = 0;
a5fd5050 213 enum cp_reason_type cp_reason = 0;
fbfa2cc5 214 struct writeback_control wbc = {
c81bf1c8 215 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 216 .nr_to_write = LONG_MAX,
217 .for_reclaim = 0,
218 };
50fa53ec 219 unsigned int seq_id = 0;
fbfa2cc5 220
4354994f
DR		 221 if (unlikely(f2fs_readonly(inode->i_sb) ||
222 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1fa95b0b
NJ		 223 return 0;
224
a2a4a7e4 225 trace_f2fs_sync_file_enter(inode);
ea1aa12c 226
b61ac5b7
YH		 227 if (S_ISDIR(inode->i_mode))
228 goto go_write;
229
ea1aa12c 230 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 231 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 232 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 233 ret = file_write_and_wait_range(file, start, end);
91942321 234 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 235
a2a4a7e4 236 if (ret) {
a5fd5050 237 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 238 return ret;
a2a4a7e4 239 }
fbfa2cc5 240
9c7bb702 241 /* if the inode is dirty, let's recover all the time */
281518c6 242 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 243 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 244 goto go_write;
245 }
246
6d99ba41
JK		 247 /*
248 * if there is no written data, don't waste time to write recovery info.
249 */
91942321 250 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
4d57b86d 251 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 252
9c7bb702
CL		 253 /* it may call write_inode just prior to fsync */
254 if (need_inode_page_update(sbi, ino))
19c9c466 255 goto go_write;
19c9c466 256
91942321 257 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
4d57b86d 258 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 259 goto flush_out;
260 goto out;
261 }
19c9c466 262go_write:
e5d2385e
JK		 263 /*
264 * Both of fdatasync() and fsync() are able to be recovered from
265 * sudden-power-off.
266 */
91942321 267 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 268 cp_reason = need_do_checkpoint(inode);
91942321 269 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 270
a5fd5050 271 if (cp_reason) {
fbfa2cc5
JK		 272 /* all the dirty node pages should be flushed for POR */
273 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 274
51455b19
CL		 275 /*
276 * We've secured consistency through sync_fs. Following pino
277 * will be used only for fsynced inodes after checkpoint.
278 */
279 try_to_fix_pino(inode);
91942321
JK		 280 clear_inode_flag(inode, FI_APPEND_WRITE);
281 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 282 goto out;
283 }
88bd02c9 284sync_nodes:
c29fd0c0 285 atomic_inc(&sbi->wb_sync_req[NODE]);
50fa53ec 286 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
c29fd0c0 287 atomic_dec(&sbi->wb_sync_req[NODE]);
c267ec15
JK		 288 if (ret)
289 goto out;
51455b19 290
871f599f 291 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 292 if (unlikely(f2fs_cp_error(sbi))) {
293 ret = -EIO;
871f599f 294 goto out;
6d5a1495 295 }
871f599f 296
4d57b86d 297 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 298 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 299 f2fs_write_inode(inode, NULL);
300 goto sync_nodes;
fbfa2cc5 301 }
51455b19 302
b6a245eb
JK		 303 /*
304 * If it's atomic_write, it's just fine to keep write ordering. So
305 * here we don't need to wait for node write completion, since we use
306 * node chain which serializes node blocks. If one of node writes are
307 * reordered, we can see simply broken chain, resulting in stopping
308 * roll-forward recovery. It means we'll recover all or none node blocks
309 * given fsync mark.
310 */
311 if (!atomic) {
50fa53ec 312 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
b6a245eb
JK		 313 if (ret)
314 goto out;
315 }
51455b19
CL		 316
317 /* once recovery info is written, don't need to tack this */
4d57b86d 318 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 319 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 320flush_out:
d6290814 321 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 322 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 323 if (!ret) {
4d57b86d 324 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 325 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 326 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 327 }
d0239e1b 328 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 329out:
a5fd5050 330 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 331 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 332 return ret;
333}
334
608514de
JK		 335int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
336{
1f227a3e
JK		 337 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
338 return -EIO;
608514de
JK		 339 return f2fs_do_sync_file(file, start, end, datasync, false);
340}
341
7f7670fe
JK		 342static pgoff_t __get_first_dirty_index(struct address_space *mapping,
343 pgoff_t pgofs, int whence)
344{
8faab642 345 struct page *page;
7f7670fe
JK		 346 int nr_pages;
347
348 if (whence != SEEK_DATA)
349 return 0;
350
351 /* find first dirty page index */
8faab642
JK		 352 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
353 1, &page);
354 if (!nr_pages)
355 return ULONG_MAX;
356 pgofs = page->index;
357 put_page(page);
7f7670fe
JK		 358 return pgofs;
359}
360
e1da7872
CY		 361static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
362 pgoff_t dirty, pgoff_t pgofs, int whence)
7f7670fe
JK		 363{
364 switch (whence) {
365 case SEEK_DATA:
366 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
93770ab7 367 __is_valid_data_blkaddr(blkaddr))
7f7670fe
JK		 368 return true;
369 break;
370 case SEEK_HOLE:
371 if (blkaddr == NULL_ADDR)
372 return true;
373 break;
374 }
375 return false;
376}
377
267378d4
CY		 378static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
379{
380 struct inode *inode = file->f_mapping->host;
381 loff_t maxbytes = inode->i_sb->s_maxbytes;
382 struct dnode_of_data dn;
7f7670fe
JK		 383 pgoff_t pgofs, end_offset, dirty;
384 loff_t data_ofs = offset;
385 loff_t isize;
267378d4
CY		 386 int err = 0;
387
5955102c 388 inode_lock(inode);
267378d4
CY		 389
390 isize = i_size_read(inode);
391 if (offset >= isize)
392 goto fail;
393
394 /* handle inline data case */
622f28ae 395 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 396 if (whence == SEEK_HOLE)
397 data_ofs = isize;
398 goto found;
399 }
400
09cbfeaf 401 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 402
7f7670fe
JK		 403 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
404
09cbfeaf 405 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 406 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 407 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 408 if (err && err != -ENOENT) {
409 goto fail;
410 } else if (err == -ENOENT) {
e1c42045 411 /* direct node does not exists */
267378d4 412 if (whence == SEEK_DATA) {
4d57b86d 413 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 414 continue;
415 } else {
416 goto found;
417 }
418 }
419
81ca7350 420 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 421
422 /* find data/hole in dnode block */
423 for (; dn.ofs_in_node < end_offset;
424 dn.ofs_in_node++, pgofs++,
09cbfeaf 425 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 426 block_t blkaddr;
f11e98bd 427
7a2af766
CY		 428 blkaddr = datablock_addr(dn.inode,
429 dn.node_page, dn.ofs_in_node);
267378d4 430
c9b60788
CY		 431 if (__is_valid_data_blkaddr(blkaddr) &&
432 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
93770ab7 433 blkaddr, DATA_GENERIC_ENHANCE)) {
c9b60788
CY		 434 f2fs_put_dnode(&dn);
435 goto fail;
436 }
437
e1da7872
CY		 438 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
439 pgofs, whence)) {
267378d4
CY		 440 f2fs_put_dnode(&dn);
441 goto found;
442 }
443 }
444 f2fs_put_dnode(&dn);
445 }
446
447 if (whence == SEEK_DATA)
448 goto fail;
267378d4 449found:
fe369bc8
JK		 450 if (whence == SEEK_HOLE && data_ofs > isize)
451 data_ofs = isize;
5955102c 452 inode_unlock(inode);
267378d4
CY		 453 return vfs_setpos(file, data_ofs, maxbytes);
454fail:
5955102c 455 inode_unlock(inode);
267378d4
CY		 456 return -ENXIO;
457}
458
459static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
460{
461 struct inode *inode = file->f_mapping->host;
462 loff_t maxbytes = inode->i_sb->s_maxbytes;
463
464 switch (whence) {
465 case SEEK_SET:
466 case SEEK_CUR:
467 case SEEK_END:
468 return generic_file_llseek_size(file, offset, whence,
469 maxbytes, i_size_read(inode));
470 case SEEK_DATA:
471 case SEEK_HOLE:
0b4c5afd
JK		 472 if (offset < 0)
473 return -ENXIO;
267378d4
CY		 474 return f2fs_seek_block(file, offset, whence);
475 }
476
477 return -EINVAL;
478}
479
fbfa2cc5
JK		 480static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
481{
b3d208f9 482 struct inode *inode = file_inode(file);
b9d777b8 483 int err;
b3d208f9 484
1f227a3e
JK		 485 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
486 return -EIO;
487
b3d208f9 488 /* we don't need to use inline_data strictly */
b9d777b8
JK		 489 err = f2fs_convert_inline_inode(inode);
490 if (err)
491 return err;
b3d208f9 492
fbfa2cc5
JK		 493 file_accessed(file);
494 vma->vm_ops = &f2fs_file_vm_ops;
495 return 0;
496}
497
fcc85a4d
JK		 498static int f2fs_file_open(struct inode *inode, struct file *filp)
499{
2e168c82 500 int err = fscrypt_file_open(inode, filp);
fcc85a4d 501
95ae251f
EB		 502 if (err)
503 return err;
504
505 err = fsverity_file_open(inode, filp);
2e168c82
EB		 506 if (err)
507 return err;
b91050a8
HL		 508
509 filp->f_mode |= FMODE_NOWAIT;
510
0abd675e 511 return dquot_file_open(inode, filp);
fcc85a4d
JK		 512}
513
4d57b86d 514void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 515{
4081363f 516 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 517 struct f2fs_node *raw_node;
19b2c30d 518 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 519 __le32 *addr;
7a2af766
CY		 520 int base = 0;
521
522 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
523 base = get_extra_isize(dn->inode);
fbfa2cc5 524
45590710 525 raw_node = F2FS_NODE(dn->node_page);
7a2af766 526 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 527
6c311ec6 528 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
fbfa2cc5 529 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 530
fbfa2cc5
JK		 531 if (blkaddr == NULL_ADDR)
532 continue;
533
e1509cf2 534 dn->data_blkaddr = NULL_ADDR;
4d57b86d 535 f2fs_set_data_blkaddr(dn);
c9b60788
CY		 536
537 if (__is_valid_data_blkaddr(blkaddr) &&
93770ab7
CY		 538 !f2fs_is_valid_blkaddr(sbi, blkaddr,
539 DATA_GENERIC_ENHANCE))
c9b60788
CY		 540 continue;
541
4d57b86d 542 f2fs_invalidate_blocks(sbi, blkaddr);
3c6c2beb 543 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 544 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
fbfa2cc5
JK		 545 nr_free++;
546 }
19b2c30d 547
fbfa2cc5 548 if (nr_free) {
19b2c30d
CY		 549 pgoff_t fofs;
550 /*
551 * once we invalidate valid blkaddr in range [ofs, ofs + count],
552 * we will invalidate all blkaddr in the whole range.
553 */
4d57b86d 554 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 555 dn->inode) + ofs;
19b2c30d 556 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 557 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 558 }
559 dn->ofs_in_node = ofs;
51dd6249 560
d0239e1b 561 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 562 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
563 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 564}
565
4d57b86d 566void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 567{
d02a6e61 568 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
fbfa2cc5
JK		 569}
570
0bfcfcca 571static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 572 bool cache_only)
fbfa2cc5 573{
193bea1d 574 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 575 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 576 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 577 struct page *page;
578
43f3eae1 579 if (!offset && !cache_only)
b3d208f9 580 return 0;
fbfa2cc5 581
43f3eae1 582 if (cache_only) {
34b5d5c2 583 page = find_lock_page(mapping, index);
43f3eae1
JK		 584 if (page && PageUptodate(page))
585 goto truncate_out;
586 f2fs_put_page(page, 1);
b3d208f9 587 return 0;
43f3eae1 588 }
fbfa2cc5 589
4d57b86d 590 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 591 if (IS_ERR(page))
a78aaa2c 592 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 593truncate_out:
bae0ee7a 594 f2fs_wait_on_page_writeback(page, DATA, true, true);
09cbfeaf 595 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 596
597 /* An encrypted inode should have a key and truncate the last page. */
62230e0d 598 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
a9bcf9bc 599 if (!cache_only)
0bfcfcca 600 set_page_dirty(page);
fbfa2cc5 601 f2fs_put_page(page, 1);
b3d208f9 602 return 0;
fbfa2cc5
JK		 603}
604
c42d28ce 605int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 606{
4081363f 607 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 608 struct dnode_of_data dn;
609 pgoff_t free_from;
9ffe0fb5 610 int count = 0, err = 0;
b3d208f9 611 struct page *ipage;
0bfcfcca 612 bool truncate_page = false;
fbfa2cc5 613
51dd6249
NJ		 614 trace_f2fs_truncate_blocks_enter(inode, from);
615
df033caf 616 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 617
09210c97
CY		 618 if (free_from >= sbi->max_file_blocks)
619 goto free_partial;
620
764aa3e9 621 if (lock)
c42d28ce 622 f2fs_lock_op(sbi);
9ffe0fb5 623
4d57b86d 624 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 625 if (IS_ERR(ipage)) {
626 err = PTR_ERR(ipage);
627 goto out;
628 }
629
630 if (f2fs_has_inline_data(inode)) {
4d57b86d 631 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 632 f2fs_put_page(ipage, 1);
0bfcfcca 633 truncate_page = true;
b3d208f9
JK		 634 goto out;
635 }
636
637 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 638 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 639 if (err) {
640 if (err == -ENOENT)
641 goto free_next;
b3d208f9 642 goto out;
1ce86bf6
JK		 643 }
644
81ca7350 645 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 646
647 count -= dn.ofs_in_node;
9850cf4a 648 f2fs_bug_on(sbi, count < 0);
39936837 649
fbfa2cc5 650 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 651 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 652 free_from += count;
653 }
654
655 f2fs_put_dnode(&dn);
656free_next:
4d57b86d 657 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 658out:
659 if (lock)
c42d28ce 660 f2fs_unlock_op(sbi);
09210c97 661free_partial:
b3d208f9
JK		 662 /* lastly zero out the first data page */
663 if (!err)
0bfcfcca 664 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 665
51dd6249 666 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 667 return err;
668}
669
9a449e9c 670int f2fs_truncate(struct inode *inode)
fbfa2cc5 671{
b0154891
CY		 672 int err;
673
1f227a3e
JK		 674 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
675 return -EIO;
676
fbfa2cc5
JK		 677 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
678 S_ISLNK(inode->i_mode)))
b0154891 679 return 0;
fbfa2cc5 680
51dd6249
NJ		 681 trace_f2fs_truncate(inode);
682
14b44d23 683 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
c45d6002 684 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
14b44d23
JK		 685 return -EIO;
686 }
7fa750a1 687
92dffd01 688 /* we should check inline_data size */
b9d777b8 689 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 690 err = f2fs_convert_inline_inode(inode);
691 if (err)
692 return err;
92dffd01
JK		 693 }
694
c42d28ce 695 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 696 if (err)
697 return err;
698
078cd827 699 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 700 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 701 return 0;
fbfa2cc5
JK		 702}
703
a528d35e 704int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 705 u32 request_mask, unsigned int query_flags)
fbfa2cc5 706{
a528d35e 707 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 708 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 709 struct f2fs_inode *ri;
1c6d8ee4
CY		 710 unsigned int flags;
711
1c1d35df 712 if (f2fs_has_extra_attr(inode) &&
7beb01f7 713 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
1c1d35df
CY		 714 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
715 stat->result_mask |= STATX_BTIME;
716 stat->btime.tv_sec = fi->i_crtime.tv_sec;
717 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
718 }
719
36098557 720 flags = fi->i_flags;
59c84408 721 if (flags & F2FS_APPEND_FL)
1c6d8ee4 722 stat->attributes |= STATX_ATTR_APPEND;
62230e0d 723 if (IS_ENCRYPTED(inode))
1c6d8ee4 724 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 725 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 726 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 727 if (flags & F2FS_NODUMP_FL)
1c6d8ee4 728 stat->attributes |= STATX_ATTR_NODUMP;
924e3194
EB		 729 if (IS_VERITY(inode))
730 stat->attributes |= STATX_ATTR_VERITY;
1c6d8ee4
CY		 731
732 stat->attributes_mask |= (STATX_ATTR_APPEND |
1c6d8ee4
CY		 733 STATX_ATTR_ENCRYPTED |
734 STATX_ATTR_IMMUTABLE |
924e3194
EB		 735 STATX_ATTR_NODUMP |
736 STATX_ATTR_VERITY);
1c6d8ee4 737
fbfa2cc5 738 generic_fillattr(inode, stat);
5b4267d1
JK		 739
740 /* we need to show initial sectors used for inline_data/dentries */
741 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
742 f2fs_has_inline_dentry(inode))
743 stat->blocks += (stat->size + 511) >> 9;
744
fbfa2cc5
JK		 745 return 0;
746}
747
748#ifdef CONFIG_F2FS_FS_POSIX_ACL
749static void __setattr_copy(struct inode *inode, const struct iattr *attr)
750{
fbfa2cc5
JK		 751 unsigned int ia_valid = attr->ia_valid;
752
753 if (ia_valid & ATTR_UID)
754 inode->i_uid = attr->ia_uid;
755 if (ia_valid & ATTR_GID)
756 inode->i_gid = attr->ia_gid;
eb31e2f6
AG		 757 if (ia_valid & ATTR_ATIME)
758 inode->i_atime = attr->ia_atime;
759 if (ia_valid & ATTR_MTIME)
760 inode->i_mtime = attr->ia_mtime;
761 if (ia_valid & ATTR_CTIME)
762 inode->i_ctime = attr->ia_ctime;
fbfa2cc5
JK		 763 if (ia_valid & ATTR_MODE) {
764 umode_t mode = attr->ia_mode;
765
766 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
767 mode &= ~S_ISGID;
91942321 768 set_acl_inode(inode, mode);
fbfa2cc5
JK		 769 }
770}
771#else
772#define __setattr_copy setattr_copy
773#endif
774
775int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
776{
2b0143b5 777 struct inode *inode = d_inode(dentry);
fbfa2cc5
JK		 778 int err;
779
1f227a3e
JK		 780 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
781 return -EIO;
782
31051c85 783 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 784 if (err)
785 return err;
786
20bb2479
EB		 787 err = fscrypt_prepare_setattr(dentry, attr);
788 if (err)
789 return err;
790
95ae251f
EB		 791 err = fsverity_prepare_setattr(dentry, attr);
792 if (err)
793 return err;
794
0abd675e
CY		 795 if (is_quota_modification(inode, attr)) {
796 err = dquot_initialize(inode);
797 if (err)
798 return err;
799 }
800 if ((attr->ia_valid & ATTR_UID &&
801 !uid_eq(attr->ia_uid, inode->i_uid)) ||
802 (attr->ia_valid & ATTR_GID &&
803 !gid_eq(attr->ia_gid, inode->i_gid))) {
af033b2a 804 f2fs_lock_op(F2FS_I_SB(inode));
0abd675e 805 err = dquot_transfer(inode, attr);
af033b2a
CY		 806 if (err) {
807 set_sbi_flag(F2FS_I_SB(inode),
808 SBI_QUOTA_NEED_REPAIR);
809 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e 810 return err;
af033b2a
CY		 811 }
812 /*
813 * update uid/gid under lock_op(), so that dquot and inode can
814 * be updated atomically.
815 */
816 if (attr->ia_valid & ATTR_UID)
817 inode->i_uid = attr->ia_uid;
818 if (attr->ia_valid & ATTR_GID)
819 inode->i_gid = attr->ia_gid;
820 f2fs_mark_inode_dirty_sync(inode, true);
821 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e
CY		 822 }
823
09db6a2e 824 if (attr->ia_valid & ATTR_SIZE) {
cfb9a34d
JK		 825 loff_t old_size = i_size_read(inode);
826
827 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
828 /*
829 * should convert inline inode before i_size_write to
830 * keep smaller than inline_data size with inline flag.
831 */
832 err = f2fs_convert_inline_inode(inode);
833 if (err)
834 return err;
835 }
a33c1502 836
a33c1502 837 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 838 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502
CY		 839
840 truncate_setsize(inode, attr->ia_size);
841
cfb9a34d 842 if (attr->ia_size <= old_size)
9a449e9c 843 err = f2fs_truncate(inode);
a33c1502
CY		 844 /*
845 * do not trim all blocks after i_size if target size is
846 * larger than i_size.
847 */
a33c1502 848 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 849 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
a33c1502
CY		 850 if (err)
851 return err;
0cab80ee 852
a0d00fad 853 down_write(&F2FS_I(inode)->i_sem);
cfb9a34d 854 inode->i_mtime = inode->i_ctime = current_time(inode);
a0d00fad
CY		 855 F2FS_I(inode)->last_disk_size = i_size_read(inode);
856 up_write(&F2FS_I(inode)->i_sem);
fbfa2cc5
JK		 857 }
858
859 __setattr_copy(inode, attr);
860
861 if (attr->ia_valid & ATTR_MODE) {
4d57b86d 862 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
91942321
JK		 863 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
864 inode->i_mode = F2FS_I(inode)->i_acl_mode;
865 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 866 }
867 }
868
c0ed4405 869 /* file size may changed here */
ca597bdd 870 f2fs_mark_inode_dirty_sync(inode, true);
15d04354
JK		 871
872 /* inode change will produce dirty node pages flushed by checkpoint */
873 f2fs_balance_fs(F2FS_I_SB(inode), true);
874
fbfa2cc5
JK		 875 return err;
876}
877
878const struct inode_operations f2fs_file_inode_operations = {
879 .getattr = f2fs_getattr,
880 .setattr = f2fs_setattr,
881 .get_acl = f2fs_get_acl,
a6dda0e6 882 .set_acl = f2fs_set_acl,
fbfa2cc5 883#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 884 .listxattr = f2fs_listxattr,
fbfa2cc5 885#endif
9ab70134 886 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 887};
888
6394328a 889static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 890 loff_t start, loff_t len)
891{
4081363f 892 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 893 struct page *page;
894
895 if (!len)
6394328a 896 return 0;
fbfa2cc5 897
2c4db1a6 898 f2fs_balance_fs(sbi, true);
bd43df02 899
e479556b 900 f2fs_lock_op(sbi);
4d57b86d 901 page = f2fs_get_new_data_page(inode, NULL, index, false);
e479556b 902 f2fs_unlock_op(sbi);
fbfa2cc5 903
6394328a
CY		 904 if (IS_ERR(page))
905 return PTR_ERR(page);
906
bae0ee7a 907 f2fs_wait_on_page_writeback(page, DATA, true, true);
6394328a
CY		 908 zero_user(page, start, len);
909 set_page_dirty(page);
910 f2fs_put_page(page, 1);
911 return 0;
fbfa2cc5
JK		 912}
913
4d57b86d 914int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
fbfa2cc5 915{
fbfa2cc5
JK		 916 int err;
917
ea58711e 918 while (pg_start < pg_end) {
fbfa2cc5 919 struct dnode_of_data dn;
ea58711e 920 pgoff_t end_offset, count;
9eaeba70 921
fbfa2cc5 922 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 923 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 924 if (err) {
ea58711e 925 if (err == -ENOENT) {
4d57b86d
CY		 926 pg_start = f2fs_get_next_page_offset(&dn,
927 pg_start);
fbfa2cc5 928 continue;
ea58711e 929 }
fbfa2cc5
JK		 930 return err;
931 }
932
81ca7350 933 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 934 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
935
936 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
937
4d57b86d 938 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5 939 f2fs_put_dnode(&dn);
ea58711e
CY		 940
941 pg_start += count;
fbfa2cc5
JK		 942 }
943 return 0;
944}
945
a66c7b2f 946static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 947{
948 pgoff_t pg_start, pg_end;
949 loff_t off_start, off_end;
b9d777b8 950 int ret;
fbfa2cc5 951
b9d777b8
JK		 952 ret = f2fs_convert_inline_inode(inode);
953 if (ret)
954 return ret;
9ffe0fb5 955
09cbfeaf
KS		 956 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
957 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 958
09cbfeaf
KS		 959 off_start = offset & (PAGE_SIZE - 1);
960 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 961
962 if (pg_start == pg_end) {
6394328a 963 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 964 off_end - off_start);
6394328a
CY		 965 if (ret)
966 return ret;
fbfa2cc5 967 } else {
6394328a
CY		 968 if (off_start) {
969 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 970 PAGE_SIZE - off_start);
6394328a
CY		 971 if (ret)
972 return ret;
973 }
974 if (off_end) {
975 ret = fill_zero(inode, pg_end, 0, off_end);
976 if (ret)
977 return ret;
978 }
fbfa2cc5
JK		 979
980 if (pg_start < pg_end) {
981 struct address_space *mapping = inode->i_mapping;
982 loff_t blk_start, blk_end;
4081363f 983 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 984
2c4db1a6 985 f2fs_balance_fs(sbi, true);
fbfa2cc5 986
09cbfeaf
KS		 987 blk_start = (loff_t)pg_start << PAGE_SHIFT;
988 blk_end = (loff_t)pg_end << PAGE_SHIFT;
a33c1502 989
a33c1502 990 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 991 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502 992
fbfa2cc5
JK		 993 truncate_inode_pages_range(mapping, blk_start,
994 blk_end - 1);
39936837 995
e479556b 996 f2fs_lock_op(sbi);
4d57b86d 997 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
e479556b 998 f2fs_unlock_op(sbi);
a33c1502 999
5a3a2d83 1000 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 1001 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
fbfa2cc5
JK		 1002 }
1003 }
1004
fbfa2cc5
JK		 1005 return ret;
1006}
1007
0a2aa8fb
JK		 1008static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1009 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 1010{
1011 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1012 struct dnode_of_data dn;
0a2aa8fb 1013 int ret, done, i;
ecbaa406 1014
0a2aa8fb 1015next_dnode:
6e2c64ad 1016 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1017 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 1018 if (ret && ret != -ENOENT) {
1019 return ret;
1020 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 1021 if (dn.max_level == 0)
1022 return -ENOENT;
d02a6e61
CY		 1023 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) - dn.ofs_in_node,
1024 len);
0a2aa8fb
JK		 1025 blkaddr += done;
1026 do_replace += done;
1027 goto next;
1028 }
1029
1030 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1031 dn.ofs_in_node, len);
1032 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 1033 *blkaddr = datablock_addr(dn.inode,
1034 dn.node_page, dn.ofs_in_node);
93770ab7
CY		 1035
1036 if (__is_valid_data_blkaddr(*blkaddr) &&
1037 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1038 DATA_GENERIC_ENHANCE)) {
1039 f2fs_put_dnode(&dn);
10f966bb 1040 return -EFSCORRUPTED;
93770ab7
CY		 1041 }
1042
4d57b86d 1043 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb
JK		 1044
1045 if (test_opt(sbi, LFS)) {
1046 f2fs_put_dnode(&dn);
fd114ab2 1047 return -EOPNOTSUPP;
0a2aa8fb
JK		 1048 }
1049
6e2c64ad 1050 /* do not invalidate this block address */
f28b3434 1051 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 1052 *do_replace = 1;
b4ace337 1053 }
6e2c64ad 1054 }
0a2aa8fb
JK		 1055 f2fs_put_dnode(&dn);
1056next:
1057 len -= done;
1058 off += done;
1059 if (len)
1060 goto next_dnode;
1061 return 0;
1062}
b4ace337 1063
0a2aa8fb
JK		 1064static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1065 int *do_replace, pgoff_t off, int len)
1066{
1067 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1068 struct dnode_of_data dn;
1069 int ret, i;
b4ace337 1070
0a2aa8fb
JK		 1071 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1072 if (*do_replace == 0)
1073 continue;
b4ace337 1074
0a2aa8fb 1075 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1076 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1077 if (ret) {
1078 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1079 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1080 } else {
1081 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1082 }
0a2aa8fb
JK		 1083 f2fs_put_dnode(&dn);
1084 }
1085 return 0;
1086}
1087
1088static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1089 block_t *blkaddr, int *do_replace,
1090 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1091{
1092 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1093 pgoff_t i = 0;
1094 int ret;
36abef4e 1095
0a2aa8fb
JK		 1096 while (i < len) {
1097 if (blkaddr[i] == NULL_ADDR && !full) {
1098 i++;
1099 continue;
6e2c64ad 1100 }
b4ace337 1101
0a2aa8fb
JK		 1102 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1103 struct dnode_of_data dn;
1104 struct node_info ni;
1105 size_t new_size;
1106 pgoff_t ilen;
b4ace337 1107
0a2aa8fb 1108 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1109 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1110 if (ret)
1111 return ret;
b4ace337 1112
7735730d
CY		 1113 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1114 if (ret) {
1115 f2fs_put_dnode(&dn);
1116 return ret;
1117 }
1118
0a2aa8fb
JK		 1119 ilen = min((pgoff_t)
1120 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1121 dn.ofs_in_node, len - i);
1122 do {
7a2af766
CY		 1123 dn.data_blkaddr = datablock_addr(dn.inode,
1124 dn.node_page, dn.ofs_in_node);
4d57b86d 1125 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1126
1127 if (do_replace[i]) {
1128 f2fs_i_blocks_write(src_inode,
0abd675e 1129 1, false, false);
0a2aa8fb 1130 f2fs_i_blocks_write(dst_inode,
0abd675e 1131 1, true, false);
0a2aa8fb
JK		 1132 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1133 blkaddr[i], ni.version, true, false);
1134
1135 do_replace[i] = 0;
1136 }
1137 dn.ofs_in_node++;
1138 i++;
1f0d5c91 1139 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
0a2aa8fb
JK		 1140 if (dst_inode->i_size < new_size)
1141 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1142 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1143
0a2aa8fb
JK		 1144 f2fs_put_dnode(&dn);
1145 } else {
1146 struct page *psrc, *pdst;
1147
4d57b86d
CY		 1148 psrc = f2fs_get_lock_data_page(src_inode,
1149 src + i, true);
0a2aa8fb
JK		 1150 if (IS_ERR(psrc))
1151 return PTR_ERR(psrc);
4d57b86d 1152 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1153 true);
1154 if (IS_ERR(pdst)) {
1155 f2fs_put_page(psrc, 1);
1156 return PTR_ERR(pdst);
1157 }
1158 f2fs_copy_page(psrc, pdst);
1159 set_page_dirty(pdst);
1160 f2fs_put_page(pdst, 1);
6e2c64ad 1161 f2fs_put_page(psrc, 1);
b4ace337 1162
4d57b86d
CY		 1163 ret = f2fs_truncate_hole(src_inode,
1164 src + i, src + i + 1);
0a2aa8fb
JK		 1165 if (ret)
1166 return ret;
1167 i++;
1168 }
6e2c64ad
JK		 1169 }
1170 return 0;
0a2aa8fb 1171}
b4ace337 1172
0a2aa8fb
JK		 1173static int __exchange_data_block(struct inode *src_inode,
1174 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1175 pgoff_t len, bool full)
0a2aa8fb
JK		 1176{
1177 block_t *src_blkaddr;
1178 int *do_replace;
363cad7f 1179 pgoff_t olen;
0a2aa8fb
JK		 1180 int ret;
1181
363cad7f 1182 while (len) {
d02a6e61 1183 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
0a2aa8fb 1184
628b3d14 1185 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1186 array_size(olen, sizeof(block_t)),
1187 GFP_KERNEL);
363cad7f
JK		 1188 if (!src_blkaddr)
1189 return -ENOMEM;
0a2aa8fb 1190
628b3d14 1191 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1192 array_size(olen, sizeof(int)),
1193 GFP_KERNEL);
363cad7f
JK		 1194 if (!do_replace) {
1195 kvfree(src_blkaddr);
1196 return -ENOMEM;
1197 }
0a2aa8fb 1198
363cad7f
JK		 1199 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1200 do_replace, src, olen);
1201 if (ret)
1202 goto roll_back;
0a2aa8fb 1203
363cad7f
JK		 1204 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1205 do_replace, src, dst, olen, full);
1206 if (ret)
1207 goto roll_back;
1208
1209 src += olen;
1210 dst += olen;
1211 len -= olen;
1212
1213 kvfree(src_blkaddr);
1214 kvfree(do_replace);
1215 }
0a2aa8fb
JK		 1216 return 0;
1217
1218roll_back:
9fd62605 1219 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1220 kvfree(src_blkaddr);
1221 kvfree(do_replace);
6e2c64ad
JK		 1222 return ret;
1223}
b4ace337 1224
6f8d4455 1225static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
6e2c64ad
JK		 1226{
1227 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f91108b8 1228 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
6f8d4455
JK		 1229 pgoff_t start = offset >> PAGE_SHIFT;
1230 pgoff_t end = (offset + len) >> PAGE_SHIFT;
0a2aa8fb 1231 int ret;
6e2c64ad 1232
0a2aa8fb 1233 f2fs_balance_fs(sbi, true);
5f281fab 1234
6f8d4455
JK		 1235 /* avoid gc operation during block exchange */
1236 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1237 down_write(&F2FS_I(inode)->i_mmap_sem);
5f281fab 1238
6f8d4455
JK		 1239 f2fs_lock_op(sbi);
1240 f2fs_drop_extent_tree(inode);
1241 truncate_pagecache(inode, offset);
0a2aa8fb
JK		 1242 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1243 f2fs_unlock_op(sbi);
6f8d4455
JK		 1244
1245 up_write(&F2FS_I(inode)->i_mmap_sem);
1246 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1247 return ret;
1248}
1249
1250static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1251{
b4ace337
CY		 1252 loff_t new_size;
1253 int ret;
1254
b4ace337
CY		 1255 if (offset + len >= i_size_read(inode))
1256 return -EINVAL;
1257
1258 /* collapse range should be aligned to block size of f2fs. */
1259 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1260 return -EINVAL;
1261
b9d777b8
JK		 1262 ret = f2fs_convert_inline_inode(inode);
1263 if (ret)
1264 return ret;
97a7b2c2 1265
b4ace337
CY		 1266 /* write out all dirty pages from offset */
1267 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1268 if (ret)
6f8d4455 1269 return ret;
b4ace337 1270
6f8d4455 1271 ret = f2fs_do_collapse(inode, offset, len);
b4ace337 1272 if (ret)
6f8d4455 1273 return ret;
b4ace337 1274
6e2c64ad 1275 /* write out all moved pages, if possible */
6f8d4455 1276 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1277 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1278 truncate_pagecache(inode, offset);
1279
b4ace337 1280 new_size = i_size_read(inode) - len;
6e2c64ad 1281 truncate_pagecache(inode, new_size);
b4ace337 1282
c42d28ce 1283 ret = f2fs_truncate_blocks(inode, new_size, true);
6f8d4455 1284 up_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337 1285 if (!ret)
fc9581c8 1286 f2fs_i_size_write(inode, new_size);
b4ace337
CY		 1287 return ret;
1288}
1289
6e961949
CY		 1290static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1291 pgoff_t end)
1292{
1293 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1294 pgoff_t index = start;
1295 unsigned int ofs_in_node = dn->ofs_in_node;
1296 blkcnt_t count = 0;
1297 int ret;
1298
1299 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1300 if (datablock_addr(dn->inode, dn->node_page,
1301 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1302 count++;
1303 }
1304
1305 dn->ofs_in_node = ofs_in_node;
4d57b86d 1306 ret = f2fs_reserve_new_blocks(dn, count);
6e961949
CY		 1307 if (ret)
1308 return ret;
1309
1310 dn->ofs_in_node = ofs_in_node;
1311 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1312 dn->data_blkaddr = datablock_addr(dn->inode,
1313 dn->node_page, dn->ofs_in_node);
6e961949 1314 /*
4d57b86d 1315 * f2fs_reserve_new_blocks will not guarantee entire block
6e961949
CY		 1316 * allocation.
1317 */
1318 if (dn->data_blkaddr == NULL_ADDR) {
1319 ret = -ENOSPC;
1320 break;
1321 }
1322 if (dn->data_blkaddr != NEW_ADDR) {
4d57b86d 1323 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
6e961949 1324 dn->data_blkaddr = NEW_ADDR;
4d57b86d 1325 f2fs_set_data_blkaddr(dn);
6e961949
CY		 1326 }
1327 }
1328
1329 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1330
1331 return ret;
1332}
1333
75cd4e09
CY		 1334static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1335 int mode)
1336{
1337 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1338 struct address_space *mapping = inode->i_mapping;
1339 pgoff_t index, pg_start, pg_end;
1340 loff_t new_size = i_size_read(inode);
1341 loff_t off_start, off_end;
1342 int ret = 0;
1343
75cd4e09
CY		 1344 ret = inode_newsize_ok(inode, (len + offset));
1345 if (ret)
1346 return ret;
1347
b9d777b8
JK		 1348 ret = f2fs_convert_inline_inode(inode);
1349 if (ret)
1350 return ret;
75cd4e09
CY		 1351
1352 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1353 if (ret)
6f8d4455 1354 return ret;
75cd4e09 1355
09cbfeaf
KS		 1356 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1357 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1358
09cbfeaf
KS		 1359 off_start = offset & (PAGE_SIZE - 1);
1360 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1361
1362 if (pg_start == pg_end) {
6394328a
CY		 1363 ret = fill_zero(inode, pg_start, off_start,
1364 off_end - off_start);
1365 if (ret)
6f8d4455 1366 return ret;
6394328a 1367
75cd4e09
CY		 1368 new_size = max_t(loff_t, new_size, offset + len);
1369 } else {
1370 if (off_start) {
6394328a 1371 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1372 PAGE_SIZE - off_start);
6394328a 1373 if (ret)
6f8d4455 1374 return ret;
6394328a 1375
75cd4e09 1376 new_size = max_t(loff_t, new_size,
09cbfeaf 1377 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1378 }
1379
6e961949 1380 for (index = pg_start; index < pg_end;) {
75cd4e09 1381 struct dnode_of_data dn;
6e961949
CY		 1382 unsigned int end_offset;
1383 pgoff_t end;
75cd4e09 1384
c7079853 1385 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1386 down_write(&F2FS_I(inode)->i_mmap_sem);
c7079853
CY		 1387
1388 truncate_pagecache_range(inode,
1389 (loff_t)index << PAGE_SHIFT,
1390 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1391
75cd4e09
CY		 1392 f2fs_lock_op(sbi);
1393
6e961949 1394 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1395 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1396 if (ret) {
1397 f2fs_unlock_op(sbi);
6f8d4455 1398 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1399 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
75cd4e09
CY		 1400 goto out;
1401 }
1402
6e961949
CY		 1403 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1404 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1405
1406 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09 1407 f2fs_put_dnode(&dn);
c7079853 1408
75cd4e09 1409 f2fs_unlock_op(sbi);
6f8d4455 1410 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1411 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
9434fcde
CY		 1412
1413 f2fs_balance_fs(sbi, dn.node_changed);
1414
6e961949
CY		 1415 if (ret)
1416 goto out;
75cd4e09 1417
6e961949 1418 index = end;
75cd4e09 1419 new_size = max_t(loff_t, new_size,
6e961949 1420 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1421 }
1422
1423 if (off_end) {
6394328a
CY		 1424 ret = fill_zero(inode, pg_end, 0, off_end);
1425 if (ret)
1426 goto out;
1427
75cd4e09
CY		 1428 new_size = max_t(loff_t, new_size, offset + len);
1429 }
1430 }
1431
1432out:
17cd07ae
CY		 1433 if (new_size > i_size_read(inode)) {
1434 if (mode & FALLOC_FL_KEEP_SIZE)
1435 file_set_keep_isize(inode);
1436 else
1437 f2fs_i_size_write(inode, new_size);
1438 }
75cd4e09
CY		 1439 return ret;
1440}
1441
f62185d0
CY		 1442static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1443{
1444 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1445 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1446 loff_t new_size;
6e2c64ad 1447 int ret = 0;
f62185d0 1448
f62185d0 1449 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1450 ret = inode_newsize_ok(inode, new_size);
1451 if (ret)
1452 return ret;
f62185d0
CY		 1453
1454 if (offset >= i_size_read(inode))
1455 return -EINVAL;
1456
1457 /* insert range should be aligned to block size of f2fs. */
1458 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1459 return -EINVAL;
1460
b9d777b8
JK		 1461 ret = f2fs_convert_inline_inode(inode);
1462 if (ret)
1463 return ret;
97a7b2c2 1464
2c4db1a6 1465 f2fs_balance_fs(sbi, true);
2a340760 1466
5a3a2d83 1467 down_write(&F2FS_I(inode)->i_mmap_sem);
c42d28ce 1468 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
6f8d4455 1469 up_write(&F2FS_I(inode)->i_mmap_sem);
f62185d0 1470 if (ret)
6f8d4455 1471 return ret;
f62185d0
CY		 1472
1473 /* write out all dirty pages from offset */
1474 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1475 if (ret)
6f8d4455 1476 return ret;
f62185d0 1477
09cbfeaf
KS		 1478 pg_start = offset >> PAGE_SHIFT;
1479 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1480 delta = pg_end - pg_start;
f91108b8 1481 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
0a2aa8fb 1482
6f8d4455
JK		 1483 /* avoid gc operation during block exchange */
1484 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1485 down_write(&F2FS_I(inode)->i_mmap_sem);
1486 truncate_pagecache(inode, offset);
1487
0a2aa8fb
JK		 1488 while (!ret && idx > pg_start) {
1489 nr = idx - pg_start;
1490 if (nr > delta)
1491 nr = delta;
1492 idx -= nr;
f62185d0 1493
f62185d0 1494 f2fs_lock_op(sbi);
5f281fab
JK		 1495 f2fs_drop_extent_tree(inode);
1496
0a2aa8fb
JK		 1497 ret = __exchange_data_block(inode, inode, idx,
1498 idx + delta, nr, false);
f62185d0
CY		 1499 f2fs_unlock_op(sbi);
1500 }
6f8d4455
JK		 1501 up_write(&F2FS_I(inode)->i_mmap_sem);
1502 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f62185d0 1503
6e2c64ad 1504 /* write out all moved pages, if possible */
6f8d4455 1505 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1506 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1507 truncate_pagecache(inode, offset);
6f8d4455 1508 up_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1509
1510 if (!ret)
fc9581c8 1511 f2fs_i_size_write(inode, new_size);
f62185d0
CY		 1512 return ret;
1513}
1514
fbfa2cc5
JK		 1515static int expand_inode_data(struct inode *inode, loff_t offset,
1516 loff_t len, int mode)
1517{
4081363f 1518 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1519 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
f9d6d059
CY		 1520 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1521 .m_may_create = true };
e12dd7bd 1522 pgoff_t pg_end;
fbfa2cc5 1523 loff_t new_size = i_size_read(inode);
e12dd7bd 1524 loff_t off_end;
a7de6086 1525 int err;
fbfa2cc5 1526
a7de6086
JK		 1527 err = inode_newsize_ok(inode, (len + offset));
1528 if (err)
1529 return err;
fbfa2cc5 1530
a7de6086
JK		 1531 err = f2fs_convert_inline_inode(inode);
1532 if (err)
1533 return err;
9e09fc85 1534
2c4db1a6 1535 f2fs_balance_fs(sbi, true);
2a340760 1536
e12dd7bd 1537 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1538 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1539
e12dd7bd
JK		 1540 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1541 map.m_len = pg_end - map.m_lblk;
1542 if (off_end)
1543 map.m_len++;
ead43275 1544
f5a53edc
JK		 1545 if (!map.m_len)
1546 return 0;
1547
1548 if (f2fs_is_pinned_file(inode)) {
1549 block_t len = (map.m_len >> sbi->log_blocks_per_seg) <<
1550 sbi->log_blocks_per_seg;
1551 block_t done = 0;
1552
1553 if (map.m_len % sbi->blocks_per_seg)
1554 len += sbi->blocks_per_seg;
1555
1556 map.m_len = sbi->blocks_per_seg;
1557next_alloc:
1558 if (has_not_enough_free_secs(sbi, 0,
1559 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1560 mutex_lock(&sbi->gc_mutex);
1561 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1562 if (err && err != -ENODATA && err != -EAGAIN)
1563 goto out_err;
1564 }
1565
1566 down_write(&sbi->pin_sem);
1567 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1568 f2fs_allocate_new_segments(sbi, CURSEG_COLD_DATA);
1569 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1570 up_write(&sbi->pin_sem);
cad3836f 1571
f5a53edc
JK		 1572 done += map.m_len;
1573 len -= map.m_len;
1574 map.m_lblk += map.m_len;
1575 if (!err && len)
1576 goto next_alloc;
1577
1578 map.m_len = done;
1579 } else {
1580 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1581 }
1582out_err:
a7de6086 1583 if (err) {
e12dd7bd 1584 pgoff_t last_off;
fbfa2cc5 1585
e12dd7bd 1586 if (!map.m_len)
a7de6086 1587 return err;
98397ff3 1588
e12dd7bd
JK		 1589 last_off = map.m_lblk + map.m_len - 1;
1590
1591 /* update new size to the failed position */
1061fd48 1592 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1593 (loff_t)(last_off + 1) << PAGE_SHIFT;
1594 } else {
1595 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1596 }
1597
e8ed90a6
CY		 1598 if (new_size > i_size_read(inode)) {
1599 if (mode & FALLOC_FL_KEEP_SIZE)
1600 file_set_keep_isize(inode);
1601 else
1602 f2fs_i_size_write(inode, new_size);
1603 }
fbfa2cc5 1604
a7de6086 1605 return err;
fbfa2cc5
JK		 1606}
1607
1608static long f2fs_fallocate(struct file *file, int mode,
1609 loff_t offset, loff_t len)
1610{
6131ffaa 1611 struct inode *inode = file_inode(file);
587c0a42 1612 long ret = 0;
fbfa2cc5 1613
1f227a3e
JK		 1614 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1615 return -EIO;
00e09c0b
CY		 1616 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1617 return -ENOSPC;
1f227a3e 1618
c998012b
CY		 1619 /* f2fs only support ->fallocate for regular file */
1620 if (!S_ISREG(inode->i_mode))
1621 return -EINVAL;
1622
62230e0d 1623 if (IS_ENCRYPTED(inode) &&
f62185d0 1624 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1625 return -EOPNOTSUPP;
1626
b4ace337 1627 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1628 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1629 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1630 return -EOPNOTSUPP;
1631
5955102c 1632 inode_lock(inode);
3375f696 1633
587c0a42
TY		 1634 if (mode & FALLOC_FL_PUNCH_HOLE) {
1635 if (offset >= inode->i_size)
1636 goto out;
1637
a66c7b2f 1638 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1639 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1640 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1641 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1642 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1643 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1644 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1645 } else {
fbfa2cc5 1646 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1647 }
fbfa2cc5 1648
3af60a49 1649 if (!ret) {
078cd827 1650 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1651 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1652 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1653 }
3375f696 1654
587c0a42 1655out:
5955102c 1656 inode_unlock(inode);
3375f696 1657
c01e2853 1658 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1659 return ret;
1660}
1661
1e84371f
JK		 1662static int f2fs_release_file(struct inode *inode, struct file *filp)
1663{
de5307e4
JK		 1664 /*
1665 * f2fs_relase_file is called at every close calls. So we should
1666 * not drop any inmemory pages by close called by other process.
1667 */
1668 if (!(filp->f_mode & FMODE_WRITE) ||
1669 atomic_read(&inode->i_writecount) != 1)
1670 return 0;
1671
1e84371f
JK		 1672 /* some remained atomic pages should discarded */
1673 if (f2fs_is_atomic_file(inode))
4d57b86d 1674 f2fs_drop_inmem_pages(inode);
1e84371f 1675 if (f2fs_is_volatile_file(inode)) {
91942321 1676 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1677 filemap_fdatawrite(inode->i_mapping);
91942321 1678 clear_inode_flag(inode, FI_DROP_CACHE);
dfa74280
CY		 1679 clear_inode_flag(inode, FI_VOLATILE_FILE);
1680 stat_dec_volatile_write(inode);
1e84371f
JK		 1681 }
1682 return 0;
1683}
1684
7a10f017 1685static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1686{
7a10f017
JK		 1687 struct inode *inode = file_inode(file);
1688
1689 /*
1690 * If the process doing a transaction is crashed, we should do
1691 * roll-back. Otherwise, other reader/write can see corrupted database
1692 * until all the writers close its file. Since this should be done
1693 * before dropping file lock, it needs to do in ->flush.
1694 */
1695 if (f2fs_is_atomic_file(inode) &&
1696 F2FS_I(inode)->inmem_task == current)
4d57b86d 1697 f2fs_drop_inmem_pages(inode);
7a10f017 1698 return 0;
fbfa2cc5
JK		 1699}
1700
36098557 1701static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
2c1d0305
CY		 1702{
1703 struct f2fs_inode_info *fi = F2FS_I(inode);
2c1d0305
CY		 1704
1705 /* Is it quota file? Do not allow user to mess with it */
1706 if (IS_NOQUOTA(inode))
1707 return -EPERM;
1708
2c2eb7a3
DR		 1709 if ((iflags ^ fi->i_flags) & F2FS_CASEFOLD_FL) {
1710 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1711 return -EOPNOTSUPP;
1712 if (!f2fs_empty_dir(inode))
1713 return -ENOTEMPTY;
1714 }
1715
d5e5efa2 1716 fi->i_flags = iflags | (fi->i_flags & ~mask);
2c1d0305 1717
59c84408 1718 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1719 set_inode_flag(inode, FI_PROJ_INHERIT);
1720 else
1721 clear_inode_flag(inode, FI_PROJ_INHERIT);
1722
1723 inode->i_ctime = current_time(inode);
1724 f2fs_set_inode_flags(inode);
b32e0190 1725 f2fs_mark_inode_dirty_sync(inode, true);
2c1d0305
CY		 1726 return 0;
1727}
1728
36098557
EB		 1729/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1730
1731/*
1732 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1733 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1734 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1735 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1736 */
1737
1738static const struct {
1739 u32 iflag;
1740 u32 fsflag;
1741} f2fs_fsflags_map[] = {
1742 { F2FS_SYNC_FL, FS_SYNC_FL },
1743 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1744 { F2FS_APPEND_FL, FS_APPEND_FL },
1745 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1746 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1747 { F2FS_INDEX_FL, FS_INDEX_FL },
1748 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1749 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
2c2eb7a3 1750 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
36098557
EB		 1751};
1752
1753#define F2FS_GETTABLE_FS_FL ( \
1754 FS_SYNC_FL | \
1755 FS_IMMUTABLE_FL | \
1756 FS_APPEND_FL | \
1757 FS_NODUMP_FL | \
1758 FS_NOATIME_FL | \
1759 FS_INDEX_FL | \
1760 FS_DIRSYNC_FL | \
1761 FS_PROJINHERIT_FL | \
1762 FS_ENCRYPT_FL | \
1763 FS_INLINE_DATA_FL | \
95ae251f 1764 FS_NOCOW_FL | \
fbc246a1 1765 FS_VERITY_FL | \
2c2eb7a3 1766 FS_CASEFOLD_FL)
36098557
EB		 1767
1768#define F2FS_SETTABLE_FS_FL ( \
1769 FS_SYNC_FL | \
1770 FS_IMMUTABLE_FL | \
1771 FS_APPEND_FL | \
1772 FS_NODUMP_FL | \
1773 FS_NOATIME_FL | \
1774 FS_DIRSYNC_FL | \
2c2eb7a3
DR		 1775 FS_PROJINHERIT_FL | \
1776 FS_CASEFOLD_FL)
36098557
EB		 1777
1778/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1779static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1780{
1781 u32 fsflags = 0;
1782 int i;
1783
1784 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1785 if (iflags & f2fs_fsflags_map[i].iflag)
1786 fsflags |= f2fs_fsflags_map[i].fsflag;
1787
1788 return fsflags;
1789}
1790
1791/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1792static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1793{
1794 u32 iflags = 0;
1795 int i;
1796
1797 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1798 if (fsflags & f2fs_fsflags_map[i].fsflag)
1799 iflags |= f2fs_fsflags_map[i].iflag;
1800
1801 return iflags;
1802}
1803
1804static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1805{
1806 struct inode *inode = file_inode(filp);
1807 struct f2fs_inode_info *fi = F2FS_I(inode);
1808 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1809
1810 if (IS_ENCRYPTED(inode))
1811 fsflags |= FS_ENCRYPT_FL;
95ae251f
EB		 1812 if (IS_VERITY(inode))
1813 fsflags |= FS_VERITY_FL;
36098557
EB		 1814 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1815 fsflags |= FS_INLINE_DATA_FL;
1816 if (is_inode_flag_set(inode, FI_PIN_FILE))
1817 fsflags |= FS_NOCOW_FL;
1818
1819 fsflags &= F2FS_GETTABLE_FS_FL;
1820
1821 return put_user(fsflags, (int __user *)arg);
1822}
1823
52656e6c
JK		 1824static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1825{
1826 struct inode *inode = file_inode(filp);
a1f32eec
EB		 1827 struct f2fs_inode_info *fi = F2FS_I(inode);
1828 u32 fsflags, old_fsflags;
36098557 1829 u32 iflags;
52656e6c 1830 int ret;
fbfa2cc5 1831
7fb17fe4
CY		 1832 if (!inode_owner_or_capable(inode))
1833 return -EACCES;
1834
36098557 1835 if (get_user(fsflags, (int __user *)arg))
7fb17fe4
CY		 1836 return -EFAULT;
1837
36098557
EB		 1838 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1839 return -EOPNOTSUPP;
1840 fsflags &= F2FS_SETTABLE_FS_FL;
1841
1842 iflags = f2fs_fsflags_to_iflags(fsflags);
1843 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1844 return -EOPNOTSUPP;
1845
52656e6c
JK		 1846 ret = mnt_want_write_file(filp);
1847 if (ret)
1848 return ret;
fbfa2cc5 1849
5955102c 1850 inode_lock(inode);
fbfa2cc5 1851
a1f32eec
EB		 1852 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1853 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1854 if (ret)
1855 goto out;
1856
36098557
EB		 1857 ret = f2fs_setflags_common(inode, iflags,
1858 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
a1f32eec 1859out:
a72d4b97 1860 inode_unlock(inode);
52656e6c
JK		 1861 mnt_drop_write_file(filp);
1862 return ret;
1863}
4b2fecc8 1864
d49f3e89
CY		 1865static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1866{
1867 struct inode *inode = file_inode(filp);
1868
1869 return put_user(inode->i_generation, (int __user *)arg);
1870}
1871
88b88a66
JK		 1872static int f2fs_ioc_start_atomic_write(struct file *filp)
1873{
1874 struct inode *inode = file_inode(filp);
743b620c
JK		 1875 struct f2fs_inode_info *fi = F2FS_I(inode);
1876 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f4c9c743 1877 int ret;
88b88a66
JK		 1878
1879 if (!inode_owner_or_capable(inode))
1880 return -EACCES;
1881
e811898c
JK		 1882 if (!S_ISREG(inode->i_mode))
1883 return -EINVAL;
1884
038d0698
CY		 1885 if (filp->f_flags & O_DIRECT)
1886 return -EINVAL;
1887
7fb17fe4
CY		 1888 ret = mnt_want_write_file(filp);
1889 if (ret)
1890 return ret;
1891
0fac558b
CY		 1892 inode_lock(inode);
1893
455e3a58
JK		 1894 if (f2fs_is_atomic_file(inode)) {
1895 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1896 ret = -EINVAL;
7fb17fe4 1897 goto out;
455e3a58 1898 }
88b88a66 1899
f4c9c743
CY		 1900 ret = f2fs_convert_inline_inode(inode);
1901 if (ret)
7fb17fe4 1902 goto out;
88b88a66 1903
6f8d4455
JK		 1904 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1905
31867b23
JK		 1906 /*
1907 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
1908 * f2fs_is_atomic_file.
1909 */
1910 if (get_dirty_pages(inode))
dcbb4c10
JP		 1911 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
1912 inode->i_ino, get_dirty_pages(inode));
c27753d6 1913 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
6f8d4455
JK		 1914 if (ret) {
1915 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 1916 goto out;
6f8d4455 1917 }
31867b23 1918
743b620c
JK		 1919 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
1920 if (list_empty(&fi->inmem_ilist))
1921 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
677017d1 1922 sbi->atomic_files++;
743b620c
JK		 1923 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
1924
1925 /* add inode in inmem_list first and set atomic_file */
054afda9 1926 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1927 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
6f8d4455 1928 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 1929
6f8d4455 1930 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7a10f017 1931 F2FS_I(inode)->inmem_task = current;
26a28a0c
JK		 1932 stat_inc_atomic_write(inode);
1933 stat_update_max_atomic_write(inode);
684ca7e5 1934out:
0fac558b 1935 inode_unlock(inode);
7fb17fe4 1936 mnt_drop_write_file(filp);
c27753d6 1937 return ret;
88b88a66
JK		 1938}
1939
1940static int f2fs_ioc_commit_atomic_write(struct file *filp)
1941{
1942 struct inode *inode = file_inode(filp);
1943 int ret;
1944
1945 if (!inode_owner_or_capable(inode))
1946 return -EACCES;
1947
1948 ret = mnt_want_write_file(filp);
1949 if (ret)
1950 return ret;
1951
6f8d4455 1952 f2fs_balance_fs(F2FS_I_SB(inode), true);
0fac558b 1953
6f8d4455 1954 inode_lock(inode);
1dc0f899 1955
b169c3c5
CY		 1956 if (f2fs_is_volatile_file(inode)) {
1957 ret = -EINVAL;
7fb17fe4 1958 goto err_out;
b169c3c5 1959 }
7fb17fe4 1960
6282adbf 1961 if (f2fs_is_atomic_file(inode)) {
4d57b86d 1962 ret = f2fs_commit_inmem_pages(inode);
5fe45743 1963 if (ret)
edb27dee 1964 goto err_out;
5fe45743 1965
26a28a0c 1966 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
743b620c
JK		 1967 if (!ret)
1968 f2fs_drop_inmem_pages(inode);
26a28a0c 1969 } else {
774e1b78 1970 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 1971 }
edb27dee 1972err_out:
2ef79ecb
CY		 1973 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
1974 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1975 ret = -EINVAL;
1976 }
0fac558b 1977 inode_unlock(inode);
88b88a66
JK		 1978 mnt_drop_write_file(filp);
1979 return ret;
1980}
1981
02a1335f
JK		 1982static int f2fs_ioc_start_volatile_write(struct file *filp)
1983{
1984 struct inode *inode = file_inode(filp);
f4c9c743 1985 int ret;
02a1335f
JK		 1986
1987 if (!inode_owner_or_capable(inode))
1988 return -EACCES;
1989
8ff0971f
CY		 1990 if (!S_ISREG(inode->i_mode))
1991 return -EINVAL;
1992
7fb17fe4
CY		 1993 ret = mnt_want_write_file(filp);
1994 if (ret)
1995 return ret;
1996
0fac558b
CY		 1997 inode_lock(inode);
1998
1e84371f 1999 if (f2fs_is_volatile_file(inode))
7fb17fe4 2000 goto out;
1e84371f 2001
f4c9c743
CY		 2002 ret = f2fs_convert_inline_inode(inode);
2003 if (ret)
7fb17fe4 2004 goto out;
b3d208f9 2005
648d50ba
CY		 2006 stat_inc_volatile_write(inode);
2007 stat_update_max_volatile_write(inode);
2008
91942321 2009 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 2010 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2011out:
0fac558b 2012 inode_unlock(inode);
7fb17fe4
CY		 2013 mnt_drop_write_file(filp);
2014 return ret;
02a1335f
JK		 2015}
2016
1e84371f
JK		 2017static int f2fs_ioc_release_volatile_write(struct file *filp)
2018{
2019 struct inode *inode = file_inode(filp);
7fb17fe4 2020 int ret;
1e84371f
JK		 2021
2022 if (!inode_owner_or_capable(inode))
2023 return -EACCES;
2024
7fb17fe4
CY		 2025 ret = mnt_want_write_file(filp);
2026 if (ret)
2027 return ret;
2028
0fac558b
CY		 2029 inode_lock(inode);
2030
1e84371f 2031 if (!f2fs_is_volatile_file(inode))
7fb17fe4 2032 goto out;
1e84371f 2033
7fb17fe4
CY		 2034 if (!f2fs_is_first_block_written(inode)) {
2035 ret = truncate_partial_data_page(inode, 0, true);
2036 goto out;
2037 }
3c6c2beb 2038
7fb17fe4
CY		 2039 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2040out:
0fac558b 2041 inode_unlock(inode);
7fb17fe4
CY		 2042 mnt_drop_write_file(filp);
2043 return ret;
1e84371f
JK		 2044}
2045
2046static int f2fs_ioc_abort_volatile_write(struct file *filp)
2047{
2048 struct inode *inode = file_inode(filp);
2049 int ret;
2050
2051 if (!inode_owner_or_capable(inode))
2052 return -EACCES;
2053
2054 ret = mnt_want_write_file(filp);
2055 if (ret)
2056 return ret;
2057
0fac558b
CY		 2058 inode_lock(inode);
2059
26dc3d44 2060 if (f2fs_is_atomic_file(inode))
4d57b86d 2061 f2fs_drop_inmem_pages(inode);
732d5648 2062 if (f2fs_is_volatile_file(inode)) {
91942321 2063 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 2064 stat_dec_volatile_write(inode);
608514de 2065 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 2066 }
de6a8ec9 2067
455e3a58
JK		 2068 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2069
0fac558b
CY		 2070 inode_unlock(inode);
2071
1e84371f 2072 mnt_drop_write_file(filp);
d0239e1b 2073 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 2074 return ret;
2075}
2076
1abff93d
JK		 2077static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2078{
2079 struct inode *inode = file_inode(filp);
2080 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2081 struct super_block *sb = sbi->sb;
2082 __u32 in;
2a96d8ad 2083 int ret = 0;
1abff93d
JK		 2084
2085 if (!capable(CAP_SYS_ADMIN))
2086 return -EPERM;
2087
2088 if (get_user(in, (__u32 __user *)arg))
2089 return -EFAULT;
2090
60b2b4ee
ST		 2091 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2092 ret = mnt_want_write_file(filp);
2093 if (ret)
2094 return ret;
2095 }
7fb17fe4 2096
1abff93d
JK		 2097 switch (in) {
2098 case F2FS_GOING_DOWN_FULLSYNC:
2099 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 2100 if (IS_ERR(sb)) {
2101 ret = PTR_ERR(sb);
2102 goto out;
2103 }
2104 if (sb) {
38f91ca8 2105 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2106 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2107 thaw_bdev(sb->s_bdev, sb);
2108 }
2109 break;
2110 case F2FS_GOING_DOWN_METASYNC:
2111 /* do checkpoint only */
d027c484
CY		 2112 ret = f2fs_sync_fs(sb, 1);
2113 if (ret)
2114 goto out;
38f91ca8 2115 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2116 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2117 break;
2118 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 2119 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2120 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d 2121 break;
c912a829 2122 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 2123 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 2124 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2125 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
c912a829 2126 break;
0cd6d9b0
JK		 2127 case F2FS_GOING_DOWN_NEED_FSCK:
2128 set_sbi_flag(sbi, SBI_NEED_FSCK);
db610a64
JK		 2129 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2130 set_sbi_flag(sbi, SBI_IS_DIRTY);
0cd6d9b0
JK		 2131 /* do checkpoint only */
2132 ret = f2fs_sync_fs(sb, 1);
db610a64 2133 goto out;
1abff93d 2134 default:
7fb17fe4
CY		 2135 ret = -EINVAL;
2136 goto out;
1abff93d 2137 }
7950e9ac 2138
4d57b86d
CY		 2139 f2fs_stop_gc_thread(sbi);
2140 f2fs_stop_discard_thread(sbi);
7950e9ac 2141
4d57b86d 2142 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 2143 clear_opt(sbi, DISCARD);
2144
d0239e1b 2145 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 2146out:
60b2b4ee
ST		 2147 if (in != F2FS_GOING_DOWN_FULLSYNC)
2148 mnt_drop_write_file(filp);
559e87c4
CY		 2149
2150 trace_f2fs_shutdown(sbi, in, ret);
2151
7fb17fe4 2152 return ret;
1abff93d
JK		 2153}
2154
52656e6c
JK		 2155static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2156{
2157 struct inode *inode = file_inode(filp);
2158 struct super_block *sb = inode->i_sb;
2159 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2160 struct fstrim_range range;
2161 int ret;
4b2fecc8 2162
52656e6c
JK		 2163 if (!capable(CAP_SYS_ADMIN))
2164 return -EPERM;
4b2fecc8 2165
7d20c8ab 2166 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
52656e6c 2167 return -EOPNOTSUPP;
4b2fecc8 2168
52656e6c
JK		 2169 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2170 sizeof(range)))
2171 return -EFAULT;
4b2fecc8 2172
7fb17fe4
CY		 2173 ret = mnt_want_write_file(filp);
2174 if (ret)
2175 return ret;
2176
52656e6c
JK		 2177 range.minlen = max((unsigned int)range.minlen,
2178 q->limits.discard_granularity);
2179 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 2180 mnt_drop_write_file(filp);
52656e6c
JK		 2181 if (ret < 0)
2182 return ret;
4b2fecc8 2183
52656e6c
JK		 2184 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2185 sizeof(range)))
2186 return -EFAULT;
d0239e1b 2187 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 2188 return 0;
2189}
2190
f424f664
JK		 2191static bool uuid_is_nonzero(__u8 u[16])
2192{
2193 int i;
2194
2195 for (i = 0; i < 16; i++)
2196 if (u[i])
2197 return true;
2198 return false;
2199}
2200
2201static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2202{
f424f664
JK		 2203 struct inode *inode = file_inode(filp);
2204
7beb01f7 2205 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
ead710b7
CY		 2206 return -EOPNOTSUPP;
2207
d0239e1b 2208 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2209
db717d8e 2210 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 2211}
2212
2213static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2214{
7beb01f7 2215 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
ead710b7 2216 return -EOPNOTSUPP;
db717d8e 2217 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 2218}
2219
2220static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2221{
2222 struct inode *inode = file_inode(filp);
2223 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2224 int err;
2225
7beb01f7 2226 if (!f2fs_sb_has_encrypt(sbi))
f424f664
JK		 2227 return -EOPNOTSUPP;
2228
f424f664
JK		 2229 err = mnt_want_write_file(filp);
2230 if (err)
2231 return err;
2232
846ae671 2233 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2234
2235 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2236 goto got_it;
2237
f424f664
JK		 2238 /* update superblock with uuid */
2239 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2240
c5bda1c8 2241 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2242 if (err) {
2243 /* undo new data */
2244 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2245 goto out_err;
f424f664
JK		 2246 }
2247got_it:
2248 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2249 16))
d0d3f1b3
CY		 2250 err = -EFAULT;
2251out_err:
846ae671 2252 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2253 mnt_drop_write_file(filp);
2254 return err;
f424f664
JK		 2255}
2256
8ce589c7
EB		 2257static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2258 unsigned long arg)
2259{
2260 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2261 return -EOPNOTSUPP;
2262
2263 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2264}
2265
2266static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2267{
2268 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2269 return -EOPNOTSUPP;
2270
2271 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2272}
2273
2274static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2275{
2276 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2277 return -EOPNOTSUPP;
2278
2279 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2280}
2281
2282static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2283 unsigned long arg)
2284{
2285 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2286 return -EOPNOTSUPP;
2287
2288 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2289}
2290
2291static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2292 unsigned long arg)
2293{
2294 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2295 return -EOPNOTSUPP;
2296
2297 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2298}
2299
c1c1b583
CY		 2300static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2301{
2302 struct inode *inode = file_inode(filp);
2303 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2304 __u32 sync;
7fb17fe4 2305 int ret;
c1c1b583
CY		 2306
2307 if (!capable(CAP_SYS_ADMIN))
2308 return -EPERM;
2309
d530d4d8 2310 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2311 return -EFAULT;
2312
d530d4d8
CY		 2313 if (f2fs_readonly(sbi->sb))
2314 return -EROFS;
c1c1b583 2315
7fb17fe4
CY		 2316 ret = mnt_want_write_file(filp);
2317 if (ret)
2318 return ret;
2319
d530d4d8 2320 if (!sync) {
7fb17fe4
CY		 2321 if (!mutex_trylock(&sbi->gc_mutex)) {
2322 ret = -EBUSY;
2323 goto out;
2324 }
d530d4d8
CY		 2325 } else {
2326 mutex_lock(&sbi->gc_mutex);
c1c1b583
CY		 2327 }
2328
e066b83c 2329 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2330out:
2331 mnt_drop_write_file(filp);
2332 return ret;
c1c1b583
CY		 2333}
2334
34dc77ad
JK		 2335static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2336{
2337 struct inode *inode = file_inode(filp);
2338 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2339 struct f2fs_gc_range range;
2340 u64 end;
2341 int ret;
2342
2343 if (!capable(CAP_SYS_ADMIN))
2344 return -EPERM;
2345
2346 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2347 sizeof(range)))
2348 return -EFAULT;
2349
2350 if (f2fs_readonly(sbi->sb))
2351 return -EROFS;
2352
b82f6e34 2353 end = range.start + range.len;
fbbf7799
ST		 2354 if (end < range.start || range.start < MAIN_BLKADDR(sbi) ||
2355 end >= MAX_BLKADDR(sbi))
b82f6e34 2356 return -EINVAL;
b82f6e34 2357
34dc77ad
JK		 2358 ret = mnt_want_write_file(filp);
2359 if (ret)
2360 return ret;
2361
34dc77ad
JK		 2362do_more:
2363 if (!range.sync) {
2364 if (!mutex_trylock(&sbi->gc_mutex)) {
2365 ret = -EBUSY;
2366 goto out;
2367 }
2368 } else {
2369 mutex_lock(&sbi->gc_mutex);
2370 }
2371
2372 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
67b0e42b 2373 range.start += BLKS_PER_SEC(sbi);
34dc77ad
JK		 2374 if (range.start <= end)
2375 goto do_more;
2376out:
2377 mnt_drop_write_file(filp);
2378 return ret;
2379}
2380
059c0648 2381static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2382{
2383 struct inode *inode = file_inode(filp);
2384 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2385 int ret;
456b88e4
CY		 2386
2387 if (!capable(CAP_SYS_ADMIN))
2388 return -EPERM;
2389
2390 if (f2fs_readonly(sbi->sb))
2391 return -EROFS;
2392
4354994f 2393 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
dcbb4c10 2394 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
4354994f
DR		 2395 return -EINVAL;
2396 }
2397
7fb17fe4
CY		 2398 ret = mnt_want_write_file(filp);
2399 if (ret)
2400 return ret;
2401
2402 ret = f2fs_sync_fs(sbi->sb, 1);
2403
2404 mnt_drop_write_file(filp);
2405 return ret;
456b88e4
CY		 2406}
2407
d323d005
CY		 2408static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2409 struct file *filp,
2410 struct f2fs_defragment *range)
2411{
2412 struct inode *inode = file_inode(filp);
f3d98e74 2413 struct f2fs_map_blocks map = { .m_next_extent = NULL,
f4f0b677
JZ		 2414 .m_seg_type = NO_CHECK_TYPE ,
2415 .m_may_create = false };
1061fd48 2416 struct extent_info ei = {0, 0, 0};
f3d98e74 2417 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2418 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2419 unsigned int total = 0, sec_num;
d323d005
CY		 2420 block_t blk_end = 0;
2421 bool fragmented = false;
2422 int err;
2423
2424 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2425 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2426 return -EINVAL;
2427
09cbfeaf
KS		 2428 pg_start = range->start >> PAGE_SHIFT;
2429 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2430
2c4db1a6 2431 f2fs_balance_fs(sbi, true);
d323d005 2432
5955102c 2433 inode_lock(inode);
d323d005
CY		 2434
2435 /* writeback all dirty pages in the range */
2436 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2437 range->start + range->len - 1);
d323d005
CY		 2438 if (err)
2439 goto out;
2440
2441 /*
2442 * lookup mapping info in extent cache, skip defragmenting if physical
2443 * block addresses are continuous.
2444 */
2445 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2446 if (ei.fofs + ei.len >= pg_end)
2447 goto out;
2448 }
2449
2450 map.m_lblk = pg_start;
f3d98e74 2451 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2452
2453 /*
2454 * lookup mapping info in dnode page cache, skip defragmenting if all
2455 * physical block addresses are continuous even if there are hole(s)
2456 * in logical blocks.
2457 */
2458 while (map.m_lblk < pg_end) {
a1c1e9b7 2459 map.m_len = pg_end - map.m_lblk;
f2220c7f 2460 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2461 if (err)
2462 goto out;
2463
2464 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2465 map.m_lblk = next_pgofs;
d323d005
CY		 2466 continue;
2467 }
2468
25a912e5 2469 if (blk_end && blk_end != map.m_pblk)
d323d005 2470 fragmented = true;
25a912e5
CY		 2471
2472 /* record total count of block that we're going to move */
2473 total += map.m_len;
2474
d323d005
CY		 2475 blk_end = map.m_pblk + map.m_len;
2476
2477 map.m_lblk += map.m_len;
d323d005
CY		 2478 }
2479
d3a1a0e1
CY		 2480 if (!fragmented) {
2481 total = 0;
d323d005 2482 goto out;
d3a1a0e1 2483 }
d323d005 2484
f91108b8 2485 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
d323d005
CY		 2486
2487 /*
2488 * make sure there are enough free section for LFS allocation, this can
2489 * avoid defragment running in SSR mode when free section are allocated
2490 * intensively
2491 */
7f3037a5 2492 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2493 err = -EAGAIN;
2494 goto out;
2495 }
2496
25a912e5
CY		 2497 map.m_lblk = pg_start;
2498 map.m_len = pg_end - pg_start;
2499 total = 0;
2500
d323d005
CY		 2501 while (map.m_lblk < pg_end) {
2502 pgoff_t idx;
2503 int cnt = 0;
2504
2505do_map:
a1c1e9b7 2506 map.m_len = pg_end - map.m_lblk;
f2220c7f 2507 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2508 if (err)
2509 goto clear_out;
2510
2511 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2512 map.m_lblk = next_pgofs;
d3a1a0e1 2513 goto check;
d323d005
CY		 2514 }
2515
91942321 2516 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2517
2518 idx = map.m_lblk;
2519 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2520 struct page *page;
2521
4d57b86d 2522 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2523 if (IS_ERR(page)) {
2524 err = PTR_ERR(page);
2525 goto clear_out;
2526 }
2527
2528 set_page_dirty(page);
2529 f2fs_put_page(page, 1);
2530
2531 idx++;
2532 cnt++;
2533 total++;
2534 }
2535
2536 map.m_lblk = idx;
d3a1a0e1
CY		 2537check:
2538 if (map.m_lblk < pg_end && cnt < blk_per_seg)
d323d005
CY		 2539 goto do_map;
2540
91942321 2541 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2542
2543 err = filemap_fdatawrite(inode->i_mapping);
2544 if (err)
2545 goto out;
2546 }
2547clear_out:
91942321 2548 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2549out:
5955102c 2550 inode_unlock(inode);
d323d005 2551 if (!err)
09cbfeaf 2552 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2553 return err;
2554}
2555
2556static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2557{
2558 struct inode *inode = file_inode(filp);
2559 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2560 struct f2fs_defragment range;
2561 int err;
2562
2563 if (!capable(CAP_SYS_ADMIN))
2564 return -EPERM;
2565
7eab0c0d 2566 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2567 return -EINVAL;
2568
d7563861
KM		 2569 if (f2fs_readonly(sbi->sb))
2570 return -EROFS;
d323d005
CY		 2571
2572 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2573 sizeof(range)))
2574 return -EFAULT;
d323d005
CY		 2575
2576 /* verify alignment of offset & size */
d7563861
KM		 2577 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2578 return -EINVAL;
d323d005 2579
1941d7bc 2580 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2581 sbi->max_file_blocks))
2582 return -EINVAL;
2583
2584 err = mnt_want_write_file(filp);
2585 if (err)
2586 return err;
1941d7bc 2587
d323d005 2588 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2589 mnt_drop_write_file(filp);
2590
d0239e1b 2591 f2fs_update_time(sbi, REQ_TIME);
d323d005 2592 if (err < 0)
d7563861 2593 return err;
d323d005
CY		 2594
2595 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2596 sizeof(range)))
d7563861
KM		 2597 return -EFAULT;
2598
2599 return 0;
d323d005
CY		 2600}
2601
4dd6f977
JK		 2602static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2603 struct file *file_out, loff_t pos_out, size_t len)
2604{
2605 struct inode *src = file_inode(file_in);
2606 struct inode *dst = file_inode(file_out);
2607 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2608 size_t olen = len, dst_max_i_size = 0;
2609 size_t dst_osize;
2610 int ret;
2611
2612 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2613 src->i_sb != dst->i_sb)
2614 return -EXDEV;
2615
2616 if (unlikely(f2fs_readonly(src->i_sb)))
2617 return -EROFS;
2618
fe8494bf
CY		 2619 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2620 return -EINVAL;
4dd6f977 2621
62230e0d 2622 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
4dd6f977
JK		 2623 return -EOPNOTSUPP;
2624
d95fd91c
FL		 2625 if (src == dst) {
2626 if (pos_in == pos_out)
2627 return 0;
2628 if (pos_out > pos_in && pos_out < pos_in + len)
2629 return -EINVAL;
2630 }
2631
4dd6f977 2632 inode_lock(src);
20a3d61d 2633 if (src != dst) {
bb06664a
CY		 2634 ret = -EBUSY;
2635 if (!inode_trylock(dst))
2636 goto out;
20a3d61d 2637 }
4dd6f977
JK		 2638
2639 ret = -EINVAL;
2640 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2641 goto out_unlock;
2642 if (len == 0)
2643 olen = len = src->i_size - pos_in;
2644 if (pos_in + len == src->i_size)
2645 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2646 if (len == 0) {
2647 ret = 0;
2648 goto out_unlock;
2649 }
2650
2651 dst_osize = dst->i_size;
2652 if (pos_out + olen > dst->i_size)
2653 dst_max_i_size = pos_out + olen;
2654
2655 /* verify the end result is block aligned */
2656 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2657 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2658 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2659 goto out_unlock;
2660
2661 ret = f2fs_convert_inline_inode(src);
2662 if (ret)
2663 goto out_unlock;
2664
2665 ret = f2fs_convert_inline_inode(dst);
2666 if (ret)
2667 goto out_unlock;
2668
2669 /* write out all dirty pages from offset */
2670 ret = filemap_write_and_wait_range(src->i_mapping,
2671 pos_in, pos_in + len);
2672 if (ret)
2673 goto out_unlock;
2674
2675 ret = filemap_write_and_wait_range(dst->i_mapping,
2676 pos_out, pos_out + len);
2677 if (ret)
2678 goto out_unlock;
2679
2680 f2fs_balance_fs(sbi, true);
6f8d4455
JK		 2681
2682 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2683 if (src != dst) {
2684 ret = -EBUSY;
2685 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2686 goto out_src;
2687 }
2688
4dd6f977 2689 f2fs_lock_op(sbi);
61e4da11
FL		 2690 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2691 pos_out >> F2FS_BLKSIZE_BITS,
2692 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2693
2694 if (!ret) {
2695 if (dst_max_i_size)
2696 f2fs_i_size_write(dst, dst_max_i_size);
2697 else if (dst_osize != dst->i_size)
2698 f2fs_i_size_write(dst, dst_osize);
2699 }
2700 f2fs_unlock_op(sbi);
6f8d4455
JK		 2701
2702 if (src != dst)
b2532c69 2703 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
6f8d4455
JK		 2704out_src:
2705 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2706out_unlock:
2707 if (src != dst)
4dd6f977 2708 inode_unlock(dst);
20a3d61d 2709out:
4dd6f977
JK		 2710 inode_unlock(src);
2711 return ret;
2712}
2713
2714static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2715{
2716 struct f2fs_move_range range;
2717 struct fd dst;
2718 int err;
2719
2720 if (!(filp->f_mode & FMODE_READ) ||
2721 !(filp->f_mode & FMODE_WRITE))
2722 return -EBADF;
2723
2724 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2725 sizeof(range)))
2726 return -EFAULT;
2727
2728 dst = fdget(range.dst_fd);
2729 if (!dst.file)
2730 return -EBADF;
2731
2732 if (!(dst.file->f_mode & FMODE_WRITE)) {
2733 err = -EBADF;
2734 goto err_out;
2735 }
2736
2737 err = mnt_want_write_file(filp);
2738 if (err)
2739 goto err_out;
2740
2741 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2742 range.pos_out, range.len);
2743
2744 mnt_drop_write_file(filp);
3cecfa5f
KM		 2745 if (err)
2746 goto err_out;
4dd6f977
JK		 2747
2748 if (copy_to_user((struct f2fs_move_range __user *)arg,
2749 &range, sizeof(range)))
2750 err = -EFAULT;
2751err_out:
2752 fdput(dst);
2753 return err;
2754}
2755
e066b83c
JK		 2756static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2757{
2758 struct inode *inode = file_inode(filp);
2759 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2760 struct sit_info *sm = SIT_I(sbi);
2761 unsigned int start_segno = 0, end_segno = 0;
2762 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2763 struct f2fs_flush_device range;
2764 int ret;
2765
2766 if (!capable(CAP_SYS_ADMIN))
2767 return -EPERM;
2768
2769 if (f2fs_readonly(sbi->sb))
2770 return -EROFS;
2771
4354994f
DR		 2772 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2773 return -EINVAL;
2774
e066b83c
JK		 2775 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2776 sizeof(range)))
2777 return -EFAULT;
2778
0916878d 2779 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2c70c5e3 2780 __is_large_section(sbi)) {
dcbb4c10
JP		 2781 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2782 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
e066b83c
JK		 2783 return -EINVAL;
2784 }
2785
2786 ret = mnt_want_write_file(filp);
2787 if (ret)
2788 return ret;
2789
2790 if (range.dev_num != 0)
2791 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2792 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2793
2794 start_segno = sm->last_victim[FLUSH_DEVICE];
2795 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2796 start_segno = dev_start_segno;
2797 end_segno = min(start_segno + range.segments, dev_end_segno);
2798
2799 while (start_segno < end_segno) {
2800 if (!mutex_trylock(&sbi->gc_mutex)) {
2801 ret = -EBUSY;
2802 goto out;
2803 }
2804 sm->last_victim[GC_CB] = end_segno + 1;
2805 sm->last_victim[GC_GREEDY] = end_segno + 1;
2806 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2807 ret = f2fs_gc(sbi, true, true, start_segno);
2808 if (ret == -EAGAIN)
2809 ret = 0;
2810 else if (ret < 0)
2811 break;
2812 start_segno++;
2813 }
2814out:
2815 mnt_drop_write_file(filp);
2816 return ret;
2817}
2818
e65ef207
JK		 2819static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2820{
2821 struct inode *inode = file_inode(filp);
2822 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2823
2824 /* Must validate to set it with SQLite behavior in Android. */
2825 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2826
2827 return put_user(sb_feature, (u32 __user *)arg);
2828}
e066b83c 2829
2c1d0305 2830#ifdef CONFIG_QUOTA
78130819
CY		 2831int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2832{
2833 struct dquot *transfer_to[MAXQUOTAS] = {};
2834 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2835 struct super_block *sb = sbi->sb;
2836 int err = 0;
2837
2838 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2839 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2840 err = __dquot_transfer(inode, transfer_to);
2841 if (err)
2842 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2843 dqput(transfer_to[PRJQUOTA]);
2844 }
2845 return err;
2846}
2847
2c1d0305
CY		 2848static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2849{
2850 struct inode *inode = file_inode(filp);
2851 struct f2fs_inode_info *fi = F2FS_I(inode);
2852 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2c1d0305
CY		 2853 struct page *ipage;
2854 kprojid_t kprojid;
2855 int err;
2856
7beb01f7 2857 if (!f2fs_sb_has_project_quota(sbi)) {
2c1d0305
CY		 2858 if (projid != F2FS_DEF_PROJID)
2859 return -EOPNOTSUPP;
2860 else
2861 return 0;
2862 }
2863
2864 if (!f2fs_has_extra_attr(inode))
2865 return -EOPNOTSUPP;
2866
2867 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2868
2869 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2870 return 0;
2871
2c1d0305 2872 err = -EPERM;
2c1d0305
CY		 2873 /* Is it quota file? Do not allow user to mess with it */
2874 if (IS_NOQUOTA(inode))
c8e92757 2875 return err;
2c1d0305 2876
4d57b86d 2877 ipage = f2fs_get_node_page(sbi, inode->i_ino);
c8e92757
WS		 2878 if (IS_ERR(ipage))
2879 return PTR_ERR(ipage);
2c1d0305
CY		 2880
2881 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2882 i_projid)) {
2883 err = -EOVERFLOW;
2884 f2fs_put_page(ipage, 1);
c8e92757 2885 return err;
2c1d0305
CY		 2886 }
2887 f2fs_put_page(ipage, 1);
2888
c22aecd7
CY		 2889 err = dquot_initialize(inode);
2890 if (err)
c8e92757 2891 return err;
2c1d0305 2892
78130819
CY		 2893 f2fs_lock_op(sbi);
2894 err = f2fs_transfer_project_quota(inode, kprojid);
2895 if (err)
2896 goto out_unlock;
2c1d0305
CY		 2897
2898 F2FS_I(inode)->i_projid = kprojid;
2899 inode->i_ctime = current_time(inode);
2c1d0305 2900 f2fs_mark_inode_dirty_sync(inode, true);
78130819
CY		 2901out_unlock:
2902 f2fs_unlock_op(sbi);
2c1d0305
CY		 2903 return err;
2904}
2905#else
78130819
CY		 2906int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2907{
2908 return 0;
2909}
2910
2c1d0305
CY		 2911static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2912{
2913 if (projid != F2FS_DEF_PROJID)
2914 return -EOPNOTSUPP;
2915 return 0;
2916}
2917#endif
2918
36098557
EB		 2919/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
2920
2921/*
2922 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
2923 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
2924 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
2925 */
2926
2927static const struct {
2928 u32 iflag;
2929 u32 xflag;
2930} f2fs_xflags_map[] = {
2931 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
2932 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
2933 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
2934 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
2935 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
2936 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
2937};
2938
2939#define F2FS_SUPPORTED_XFLAGS ( \
2940 FS_XFLAG_SYNC | \
2941 FS_XFLAG_IMMUTABLE | \
2942 FS_XFLAG_APPEND | \
2943 FS_XFLAG_NODUMP | \
2944 FS_XFLAG_NOATIME | \
2945 FS_XFLAG_PROJINHERIT)
2946
2947/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
2948static inline u32 f2fs_iflags_to_xflags(u32 iflags)
2949{
2950 u32 xflags = 0;
2951 int i;
2952
2953 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
2954 if (iflags & f2fs_xflags_map[i].iflag)
2955 xflags |= f2fs_xflags_map[i].xflag;
2956
2c1d0305
CY		 2957 return xflags;
2958}
2959
36098557
EB		 2960/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
2961static inline u32 f2fs_xflags_to_iflags(u32 xflags)
2c1d0305 2962{
36098557
EB		 2963 u32 iflags = 0;
2964 int i;
2c1d0305 2965
36098557
EB		 2966 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
2967 if (xflags & f2fs_xflags_map[i].xflag)
2968 iflags |= f2fs_xflags_map[i].iflag;
2c1d0305
CY		 2969
2970 return iflags;
2971}
2972
6fc93c4e 2973static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
2c1d0305 2974{
2c1d0305 2975 struct f2fs_inode_info *fi = F2FS_I(inode);
2c1d0305 2976
6fc93c4e 2977 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
2c1d0305 2978
7beb01f7 2979 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
6fc93c4e 2980 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
2c1d0305
CY		 2981}
2982
6fc93c4e 2983static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
c8e92757 2984{
6fc93c4e
EB		 2985 struct inode *inode = file_inode(filp);
2986 struct fsxattr fa;
c8e92757 2987
6fc93c4e 2988 f2fs_fill_fsxattr(inode, &fa);
c8e92757 2989
6fc93c4e
EB		 2990 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2991 return -EFAULT;
c8e92757
WS		 2992 return 0;
2993}
2994
2c1d0305
CY		 2995static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
2996{
2997 struct inode *inode = file_inode(filp);
6fc93c4e 2998 struct fsxattr fa, old_fa;
36098557 2999 u32 iflags;
2c1d0305
CY		 3000 int err;
3001
3002 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
3003 return -EFAULT;
3004
3005 /* Make sure caller has proper permission */
3006 if (!inode_owner_or_capable(inode))
3007 return -EACCES;
3008
36098557 3009 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
2c1d0305
CY		 3010 return -EOPNOTSUPP;
3011
36098557
EB		 3012 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
3013 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
2c1d0305
CY		 3014 return -EOPNOTSUPP;
3015
3016 err = mnt_want_write_file(filp);
3017 if (err)
3018 return err;
3019
3020 inode_lock(inode);
6fc93c4e
EB		 3021
3022 f2fs_fill_fsxattr(inode, &old_fa);
3023 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
c8e92757
WS		 3024 if (err)
3025 goto out;
6fc93c4e 3026
36098557
EB		 3027 err = f2fs_setflags_common(inode, iflags,
3028 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
2c1d0305 3029 if (err)
c8e92757 3030 goto out;
2c1d0305
CY		 3031
3032 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
c8e92757
WS		 3033out:
3034 inode_unlock(inode);
3035 mnt_drop_write_file(filp);
3036 return err;
2c1d0305 3037}
e066b83c 3038
1ad71a27
JK		 3039int f2fs_pin_file_control(struct inode *inode, bool inc)
3040{
3041 struct f2fs_inode_info *fi = F2FS_I(inode);
3042 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3043
3044 /* Use i_gc_failures for normal file as a risk signal. */
3045 if (inc)
2ef79ecb
CY		 3046 f2fs_i_gc_failures_write(inode,
3047 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 3048
2ef79ecb 3049 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
dcbb4c10
JP		 3050 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3051 __func__, inode->i_ino,
3052 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 3053 clear_inode_flag(inode, FI_PIN_FILE);
3054 return -EAGAIN;
3055 }
3056 return 0;
3057}
3058
3059static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3060{
3061 struct inode *inode = file_inode(filp);
3062 __u32 pin;
3063 int ret = 0;
3064
1ad71a27
JK		 3065 if (get_user(pin, (__u32 __user *)arg))
3066 return -EFAULT;
3067
3068 if (!S_ISREG(inode->i_mode))
3069 return -EINVAL;
3070
3071 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3072 return -EROFS;
3073
3074 ret = mnt_want_write_file(filp);
3075 if (ret)
3076 return ret;
3077
3078 inode_lock(inode);
3079
4d57b86d 3080 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 3081 ret = -EINVAL;
3082 goto out;
3083 }
3084
1ad71a27
JK		 3085 if (!pin) {
3086 clear_inode_flag(inode, FI_PIN_FILE);
30933364 3087 f2fs_i_gc_failures_write(inode, 0);
1ad71a27
JK		 3088 goto done;
3089 }
3090
3091 if (f2fs_pin_file_control(inode, false)) {
3092 ret = -EAGAIN;
3093 goto out;
3094 }
3095 ret = f2fs_convert_inline_inode(inode);
3096 if (ret)
3097 goto out;
3098
3099 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 3100 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3101done:
3102 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3103out:
3104 inode_unlock(inode);
3105 mnt_drop_write_file(filp);
3106 return ret;
3107}
3108
3109static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3110{
3111 struct inode *inode = file_inode(filp);
3112 __u32 pin = 0;
3113
3114 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 3115 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3116 return put_user(pin, (u32 __user *)arg);
3117}
3118
c4020b2d
CY		 3119int f2fs_precache_extents(struct inode *inode)
3120{
3121 struct f2fs_inode_info *fi = F2FS_I(inode);
3122 struct f2fs_map_blocks map;
3123 pgoff_t m_next_extent;
3124 loff_t end;
3125 int err;
3126
3127 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3128 return -EOPNOTSUPP;
3129
3130 map.m_lblk = 0;
3131 map.m_next_pgofs = NULL;
3132 map.m_next_extent = &m_next_extent;
3133 map.m_seg_type = NO_CHECK_TYPE;
f4f0b677 3134 map.m_may_create = false;
c4020b2d
CY		 3135 end = F2FS_I_SB(inode)->max_file_blocks;
3136
3137 while (map.m_lblk < end) {
3138 map.m_len = end - map.m_lblk;
3139
b2532c69 3140 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 3141 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 3142 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 3143 if (err)
3144 return err;
3145
3146 map.m_lblk = m_next_extent;
3147 }
3148
3149 return err;
3150}
3151
3152static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3153{
3154 return f2fs_precache_extents(file_inode(filp));
3155}
3156
04f0b2ea
QS		 3157static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3158{
3159 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3160 __u64 block_count;
3161 int ret;
3162
3163 if (!capable(CAP_SYS_ADMIN))
3164 return -EPERM;
3165
3166 if (f2fs_readonly(sbi->sb))
3167 return -EROFS;
3168
3169 if (copy_from_user(&block_count, (void __user *)arg,
3170 sizeof(block_count)))
3171 return -EFAULT;
3172
3173 ret = f2fs_resize_fs(sbi, block_count);
3174
3175 return ret;
3176}
3177
95ae251f
EB		 3178static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3179{
3180 struct inode *inode = file_inode(filp);
3181
3182 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3183
3184 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3185 f2fs_warn(F2FS_I_SB(inode),
3186 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3187 inode->i_ino);
3188 return -EOPNOTSUPP;
3189 }
3190
3191 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3192}
3193
3194static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3195{
3196 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3197 return -EOPNOTSUPP;
3198
3199 return fsverity_ioctl_measure(filp, (void __user *)arg);
3200}
3201
4507847c
CY		 3202static int f2fs_get_volume_name(struct file *filp, unsigned long arg)
3203{
3204 struct inode *inode = file_inode(filp);
3205 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3206 char *vbuf;
3207 int count;
3208 int err = 0;
3209
3210 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3211 if (!vbuf)
3212 return -ENOMEM;
3213
3214 down_read(&sbi->sb_lock);
3215 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3216 ARRAY_SIZE(sbi->raw_super->volume_name),
3217 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3218 up_read(&sbi->sb_lock);
3219
3220 if (copy_to_user((char __user *)arg, vbuf,
3221 min(FSLABEL_MAX, count)))
3222 err = -EFAULT;
3223
3224 kvfree(vbuf);
3225 return err;
3226}
3227
3228static int f2fs_set_volume_name(struct file *filp, unsigned long arg)
3229{
3230 struct inode *inode = file_inode(filp);
3231 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3232 char *vbuf;
3233 int err = 0;
3234
3235 if (!capable(CAP_SYS_ADMIN))
3236 return -EPERM;
3237
3238 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3239 if (IS_ERR(vbuf))
3240 return PTR_ERR(vbuf);
3241
3242 err = mnt_want_write_file(filp);
3243 if (err)
3244 goto out;
3245
3246 down_write(&sbi->sb_lock);
3247
3248 memset(sbi->raw_super->volume_name, 0,
3249 sizeof(sbi->raw_super->volume_name));
3250 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3251 sbi->raw_super->volume_name,
3252 ARRAY_SIZE(sbi->raw_super->volume_name));
3253
3254 err = f2fs_commit_super(sbi, false);
3255
3256 up_write(&sbi->sb_lock);
3257
3258 mnt_drop_write_file(filp);
3259out:
3260 kfree(vbuf);
3261 return err;
3262}
3263
52656e6c
JK		 3264long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3265{
1f227a3e
JK		 3266 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
3267 return -EIO;
00e09c0b
CY		 3268 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
3269 return -ENOSPC;
1f227a3e 3270
52656e6c
JK		 3271 switch (cmd) {
3272 case F2FS_IOC_GETFLAGS:
3273 return f2fs_ioc_getflags(filp, arg);
3274 case F2FS_IOC_SETFLAGS:
3275 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 3276 case F2FS_IOC_GETVERSION:
3277 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 3278 case F2FS_IOC_START_ATOMIC_WRITE:
3279 return f2fs_ioc_start_atomic_write(filp);
3280 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3281 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 3282 case F2FS_IOC_START_VOLATILE_WRITE:
3283 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 3284 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3285 return f2fs_ioc_release_volatile_write(filp);
3286 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3287 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 3288 case F2FS_IOC_SHUTDOWN:
3289 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 3290 case FITRIM:
3291 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 3292 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3293 return f2fs_ioc_set_encryption_policy(filp, arg);
3294 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3295 return f2fs_ioc_get_encryption_policy(filp, arg);
3296 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3297 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
8ce589c7
EB		 3298 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3299 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
3300 case FS_IOC_ADD_ENCRYPTION_KEY:
3301 return f2fs_ioc_add_encryption_key(filp, arg);
3302 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3303 return f2fs_ioc_remove_encryption_key(filp, arg);
3304 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3305 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
3306 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3307 return f2fs_ioc_get_encryption_key_status(filp, arg);
c1c1b583
CY		 3308 case F2FS_IOC_GARBAGE_COLLECT:
3309 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 3310 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3311 return f2fs_ioc_gc_range(filp, arg);
456b88e4 3312 case F2FS_IOC_WRITE_CHECKPOINT:
059c0648 3313 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 3314 case F2FS_IOC_DEFRAGMENT:
3315 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 3316 case F2FS_IOC_MOVE_RANGE:
3317 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 3318 case F2FS_IOC_FLUSH_DEVICE:
3319 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 3320 case F2FS_IOC_GET_FEATURES:
3321 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 3322 case F2FS_IOC_FSGETXATTR:
3323 return f2fs_ioc_fsgetxattr(filp, arg);
3324 case F2FS_IOC_FSSETXATTR:
3325 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 3326 case F2FS_IOC_GET_PIN_FILE:
3327 return f2fs_ioc_get_pin_file(filp, arg);
3328 case F2FS_IOC_SET_PIN_FILE:
3329 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 3330 case F2FS_IOC_PRECACHE_EXTENTS:
3331 return f2fs_ioc_precache_extents(filp, arg);
04f0b2ea
QS		 3332 case F2FS_IOC_RESIZE_FS:
3333 return f2fs_ioc_resize_fs(filp, arg);
95ae251f
EB		 3334 case FS_IOC_ENABLE_VERITY:
3335 return f2fs_ioc_enable_verity(filp, arg);
3336 case FS_IOC_MEASURE_VERITY:
3337 return f2fs_ioc_measure_verity(filp, arg);
4507847c
CY		 3338 case F2FS_IOC_GET_VOLUME_NAME:
3339 return f2fs_get_volume_name(filp, arg);
3340 case F2FS_IOC_SET_VOLUME_NAME:
3341 return f2fs_set_volume_name(filp, arg);
fbfa2cc5
JK		 3342 default:
3343 return -ENOTTY;
3344 }
3345}
3346
fcc85a4d
JK		 3347static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
3348{
b439b103
JK		 3349 struct file *file = iocb->ki_filp;
3350 struct inode *inode = file_inode(file);
3351 ssize_t ret;
fcc85a4d 3352
126ce721
CY		 3353 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
3354 ret = -EIO;
3355 goto out;
3356 }
1f227a3e 3357
cb8434f1
GR		 3358 if (iocb->ki_flags & IOCB_NOWAIT) {
3359 if (!inode_trylock(inode)) {
126ce721
CY		 3360 ret = -EAGAIN;
3361 goto out;
3362 }
cb8434f1 3363 } else {
b91050a8
HL		 3364 inode_lock(inode);
3365 }
3366
b439b103
JK		 3367 ret = generic_write_checks(iocb, from);
3368 if (ret > 0) {
dc7a10dd
JK		 3369 bool preallocated = false;
3370 size_t target_size = 0;
dc91de78 3371 int err;
a7de6086 3372
dc91de78
JK		 3373 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
3374 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 3375
d5d5f0c0
CX		 3376 if ((iocb->ki_flags & IOCB_NOWAIT)) {
3377 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
b91050a8 3378 iov_iter_count(from)) ||
d5d5f0c0
CX		 3379 f2fs_has_inline_data(inode) ||
3380 f2fs_force_buffered_io(inode, iocb, from)) {
3381 clear_inode_flag(inode, FI_NO_PREALLOC);
3382 inode_unlock(inode);
3383 ret = -EAGAIN;
3384 goto out;
3385 }
b91050a8 3386 } else {
dc7a10dd
JK		 3387 preallocated = true;
3388 target_size = iocb->ki_pos + iov_iter_count(from);
3389
b91050a8
HL		 3390 err = f2fs_preallocate_blocks(iocb, from);
3391 if (err) {
3392 clear_inode_flag(inode, FI_NO_PREALLOC);
3393 inode_unlock(inode);
126ce721
CY		 3394 ret = err;
3395 goto out;
b91050a8 3396 }
9dfa1baf 3397 }
a7de6086 3398 ret = __generic_file_write_iter(iocb, from);
dc91de78 3399 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 3400
dc7a10dd
JK		 3401 /* if we couldn't write data, we should deallocate blocks. */
3402 if (preallocated && i_size_read(inode) < target_size)
3403 f2fs_truncate(inode);
3404
b0af6d49
CY		 3405 if (ret > 0)
3406 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 3407 }
3408 inode_unlock(inode);
126ce721
CY		 3409out:
3410 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
3411 iov_iter_count(from), ret);
e2592217
CH		 3412 if (ret > 0)
3413 ret = generic_write_sync(iocb, ret);
b439b103 3414 return ret;
fcc85a4d
JK		 3415}
3416
e9750824
NJ		 3417#ifdef CONFIG_COMPAT
3418long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3419{
3420 switch (cmd) {
3421 case F2FS_IOC32_GETFLAGS:
3422 cmd = F2FS_IOC_GETFLAGS;
3423 break;
3424 case F2FS_IOC32_SETFLAGS:
3425 cmd = F2FS_IOC_SETFLAGS;
3426 break;
04ef4b62
CY		 3427 case F2FS_IOC32_GETVERSION:
3428 cmd = F2FS_IOC_GETVERSION;
3429 break;
3430 case F2FS_IOC_START_ATOMIC_WRITE:
3431 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3432 case F2FS_IOC_START_VOLATILE_WRITE:
3433 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3434 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3435 case F2FS_IOC_SHUTDOWN:
314999dc 3436 case FITRIM:
04ef4b62
CY		 3437 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3438 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3439 case F2FS_IOC_GET_ENCRYPTION_POLICY:
8ce589c7
EB		 3440 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3441 case FS_IOC_ADD_ENCRYPTION_KEY:
3442 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3443 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3444 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
04ef4b62 3445 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 3446 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 3447 case F2FS_IOC_WRITE_CHECKPOINT:
3448 case F2FS_IOC_DEFRAGMENT:
4dd6f977 3449 case F2FS_IOC_MOVE_RANGE:
e066b83c 3450 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 3451 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 3452 case F2FS_IOC_FSGETXATTR:
3453 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 3454 case F2FS_IOC_GET_PIN_FILE:
3455 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 3456 case F2FS_IOC_PRECACHE_EXTENTS:
04f0b2ea 3457 case F2FS_IOC_RESIZE_FS:
95ae251f
EB		 3458 case FS_IOC_ENABLE_VERITY:
3459 case FS_IOC_MEASURE_VERITY:
4507847c
CY		 3460 case F2FS_IOC_GET_VOLUME_NAME:
3461 case F2FS_IOC_SET_VOLUME_NAME:
4dd6f977 3462 break;
e9750824
NJ		 3463 default:
3464 return -ENOIOCTLCMD;
3465 }
3466 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3467}
3468#endif
3469
fbfa2cc5 3470const struct file_operations f2fs_file_operations = {
267378d4 3471 .llseek = f2fs_llseek,
aad4f8bb 3472 .read_iter = generic_file_read_iter,
fcc85a4d
JK		 3473 .write_iter = f2fs_file_write_iter,
3474 .open = f2fs_file_open,
12662234 3475 .release = f2fs_release_file,
fbfa2cc5 3476 .mmap = f2fs_file_mmap,
7a10f017 3477 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3478 .fsync = f2fs_sync_file,
3479 .fallocate = f2fs_fallocate,
3480 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3481#ifdef CONFIG_COMPAT
3482 .compat_ioctl = f2fs_compat_ioctl,
3483#endif
fbfa2cc5 3484 .splice_read = generic_file_splice_read,
8d020765 3485 .splice_write = iter_file_splice_write,
fbfa2cc5 3486};
Linux 6.x block layer and io_uring tree(s)