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f2fs: show mounted time
[linux-block.git] / fs / f2fs / file.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
fbfa2cc5
JK		 3 * fs/f2fs/file.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
fbfa2cc5
JK		 7 */
8#include <linux/fs.h>
9#include <linux/f2fs_fs.h>
10#include <linux/stat.h>
11#include <linux/buffer_head.h>
12#include <linux/writeback.h>
ae51fb31 13#include <linux/blkdev.h>
fbfa2cc5
JK		 14#include <linux/falloc.h>
15#include <linux/types.h>
e9750824 16#include <linux/compat.h>
fbfa2cc5
JK		 17#include <linux/uaccess.h>
18#include <linux/mount.h>
7f7670fe 19#include <linux/pagevec.h>
dc91de78 20#include <linux/uio.h>
8da4b8c4 21#include <linux/uuid.h>
4dd6f977 22#include <linux/file.h>
4507847c 23#include <linux/nls.h>
fbfa2cc5
JK		 24
25#include "f2fs.h"
26#include "node.h"
27#include "segment.h"
28#include "xattr.h"
29#include "acl.h"
c1c1b583 30#include "gc.h"
db9f7c1a 31#include "trace.h"
a2a4a7e4 32#include <trace/events/f2fs.h>
fbfa2cc5 33
ea4d479b 34static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
5a3a2d83
QS		 35{
36 struct inode *inode = file_inode(vmf->vma->vm_file);
ea4d479b 37 vm_fault_t ret;
5a3a2d83
QS		 38
39 down_read(&F2FS_I(inode)->i_mmap_sem);
ea4d479b 40 ret = filemap_fault(vmf);
5a3a2d83
QS		 41 up_read(&F2FS_I(inode)->i_mmap_sem);
42
d7648343
CY		 43 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
44
ea4d479b 45 return ret;
5a3a2d83
QS		 46}
47
ea4d479b 48static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
fbfa2cc5
JK		 49{
50 struct page *page = vmf->page;
11bac800 51 struct inode *inode = file_inode(vmf->vma->vm_file);
4081363f 52 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
bdf03299 53 struct dnode_of_data dn;
4c8ff709
CY		 54 bool need_alloc = true;
55 int err = 0;
fbfa2cc5 56
1f227a3e
JK		 57 if (unlikely(f2fs_cp_error(sbi))) {
58 err = -EIO;
59 goto err;
60 }
61
00e09c0b
CY		 62 if (!f2fs_is_checkpoint_ready(sbi)) {
63 err = -ENOSPC;
955ebcd3 64 goto err;
00e09c0b 65 }
1f227a3e 66
4c8ff709
CY		 67#ifdef CONFIG_F2FS_FS_COMPRESSION
68 if (f2fs_compressed_file(inode)) {
69 int ret = f2fs_is_compressed_cluster(inode, page->index);
70
71 if (ret < 0) {
72 err = ret;
73 goto err;
74 } else if (ret) {
75 if (ret < F2FS_I(inode)->i_cluster_size) {
76 err = -EAGAIN;
77 goto err;
78 }
79 need_alloc = false;
80 }
81 }
82#endif
bdf03299 83 /* should do out of any locked page */
4c8ff709
CY		 84 if (need_alloc)
85 f2fs_balance_fs(sbi, true);
bdf03299 86
fbfa2cc5 87 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 88
89 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 90
11bac800 91 file_update_time(vmf->vma->vm_file);
5a3a2d83 92 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 93 lock_page(page);
6bacf52f 94 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 95 page_offset(page) > i_size_read(inode) ||
6bacf52f 96 !PageUptodate(page))) {
fbfa2cc5
JK		 97 unlock_page(page);
98 err = -EFAULT;
5a3a2d83 99 goto out_sem;
fbfa2cc5
JK		 100 }
101
4c8ff709
CY		 102 if (need_alloc) {
103 /* block allocation */
104 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
105 set_new_dnode(&dn, inode, NULL, NULL, 0);
106 err = f2fs_get_block(&dn, page->index);
107 f2fs_put_dnode(&dn);
108 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
06c7540f
CY		 109 }
110
111#ifdef CONFIG_F2FS_FS_COMPRESSION
112 if (!need_alloc) {
113 set_new_dnode(&dn, inode, NULL, NULL, 0);
114 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
115 f2fs_put_dnode(&dn);
116 }
117#endif
118 if (err) {
119 unlock_page(page);
120 goto out_sem;
39a86958
CY		 121 }
122
bae0ee7a 123 f2fs_wait_on_page_writeback(page, DATA, false, true);
39a86958
CY		 124
125 /* wait for GCed page writeback via META_MAPPING */
126 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
127
fbfa2cc5
JK		 128 /*
129 * check to see if the page is mapped already (no holes)
130 */
131 if (PageMappedToDisk(page))
39a86958 132 goto out_sem;
fbfa2cc5
JK		 133
134 /* page is wholly or partially inside EOF */
09cbfeaf 135 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 136 i_size_read(inode)) {
193bea1d 137 loff_t offset;
f11e98bd 138
09cbfeaf
KS		 139 offset = i_size_read(inode) & ~PAGE_MASK;
140 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 141 }
142 set_page_dirty(page);
237c0790
JK		 143 if (!PageUptodate(page))
144 SetPageUptodate(page);
fbfa2cc5 145
b0af6d49 146 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
c75f2feb 147 f2fs_update_time(sbi, REQ_TIME);
b0af6d49 148
e943a10d 149 trace_f2fs_vm_page_mkwrite(page, DATA);
5a3a2d83
QS		 150out_sem:
151 up_read(&F2FS_I(inode)->i_mmap_sem);
39a86958 152
fbfa2cc5 153 sb_end_pagefault(inode->i_sb);
1f227a3e 154err:
fbfa2cc5
JK		 155 return block_page_mkwrite_return(err);
156}
157
158static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 159 .fault = f2fs_filemap_fault,
f1820361 160 .map_pages = filemap_map_pages,
692bb55d 161 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 162};
163
354a3399
JK		 164static int get_parent_ino(struct inode *inode, nid_t *pino)
165{
166 struct dentry *dentry;
167
168 inode = igrab(inode);
169 dentry = d_find_any_alias(inode);
170 iput(inode);
171 if (!dentry)
172 return 0;
173
f0947e5c
JK		 174 *pino = parent_ino(dentry);
175 dput(dentry);
354a3399
JK		 176 return 1;
177}
178
a5fd5050 179static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 180{
4081363f 181 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 182 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 183
a5fd5050
CY		 184 if (!S_ISREG(inode->i_mode))
185 cp_reason = CP_NON_REGULAR;
4c8ff709
CY		 186 else if (f2fs_compressed_file(inode))
187 cp_reason = CP_COMPRESSED;
a5fd5050
CY		 188 else if (inode->i_nlink != 1)
189 cp_reason = CP_HARDLINK;
bbf156f7 190 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 191 cp_reason = CP_SB_NEED_CP;
9d1589ef 192 else if (file_wrong_pino(inode))
a5fd5050 193 cp_reason = CP_WRONG_PINO;
4d57b86d 194 else if (!f2fs_space_for_roll_forward(sbi))
a5fd5050 195 cp_reason = CP_NO_SPC_ROLL;
4d57b86d 196 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 197 cp_reason = CP_NODE_NEED_CP;
d5053a34 198 else if (test_opt(sbi, FASTBOOT))
a5fd5050 199 cp_reason = CP_FASTBOOT_MODE;
63189b78 200 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 201 cp_reason = CP_SPEC_LOG_NUM;
63189b78 202 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
4d57b86d
CY		 203 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
204 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
205 TRANS_DIR_INO))
0a007b97 206 cp_reason = CP_RECOVER_DIR;
9d1589ef 207
a5fd5050 208 return cp_reason;
9d1589ef
CY		 209}
210
9c7bb702
CL		 211static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
212{
213 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
214 bool ret = false;
215 /* But we need to avoid that there are some inode updates */
4d57b86d 216 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
9c7bb702
CL		 217 ret = true;
218 f2fs_put_page(i, 0);
219 return ret;
220}
221
51455b19
CL		 222static void try_to_fix_pino(struct inode *inode)
223{
224 struct f2fs_inode_info *fi = F2FS_I(inode);
225 nid_t pino;
226
227 down_write(&fi->i_sem);
51455b19
CL		 228 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
229 get_parent_ino(inode, &pino)) {
205b9822 230 f2fs_i_pino_write(inode, pino);
51455b19 231 file_got_pino(inode);
51455b19 232 }
ee6d182f 233 up_write(&fi->i_sem);
51455b19
CL		 234}
235
608514de
JK		 236static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
237 int datasync, bool atomic)
fbfa2cc5
JK		 238{
239 struct inode *inode = file->f_mapping->host;
4081363f 240 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 241 nid_t ino = inode->i_ino;
fbfa2cc5 242 int ret = 0;
a5fd5050 243 enum cp_reason_type cp_reason = 0;
fbfa2cc5 244 struct writeback_control wbc = {
c81bf1c8 245 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 246 .nr_to_write = LONG_MAX,
247 .for_reclaim = 0,
248 };
50fa53ec 249 unsigned int seq_id = 0;
fbfa2cc5 250
4354994f
DR		 251 if (unlikely(f2fs_readonly(inode->i_sb) ||
252 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1fa95b0b
NJ		 253 return 0;
254
a2a4a7e4 255 trace_f2fs_sync_file_enter(inode);
ea1aa12c 256
b61ac5b7
YH		 257 if (S_ISDIR(inode->i_mode))
258 goto go_write;
259
ea1aa12c 260 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 261 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 262 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 263 ret = file_write_and_wait_range(file, start, end);
91942321 264 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 265
a2a4a7e4 266 if (ret) {
a5fd5050 267 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 268 return ret;
a2a4a7e4 269 }
fbfa2cc5 270
9c7bb702 271 /* if the inode is dirty, let's recover all the time */
281518c6 272 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 273 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 274 goto go_write;
275 }
276
6d99ba41
JK		 277 /*
278 * if there is no written data, don't waste time to write recovery info.
279 */
91942321 280 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
4d57b86d 281 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 282
9c7bb702
CL		 283 /* it may call write_inode just prior to fsync */
284 if (need_inode_page_update(sbi, ino))
19c9c466 285 goto go_write;
19c9c466 286
91942321 287 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
4d57b86d 288 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 289 goto flush_out;
290 goto out;
291 }
19c9c466 292go_write:
e5d2385e
JK		 293 /*
294 * Both of fdatasync() and fsync() are able to be recovered from
295 * sudden-power-off.
296 */
91942321 297 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 298 cp_reason = need_do_checkpoint(inode);
91942321 299 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 300
a5fd5050 301 if (cp_reason) {
fbfa2cc5
JK		 302 /* all the dirty node pages should be flushed for POR */
303 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 304
51455b19
CL		 305 /*
306 * We've secured consistency through sync_fs. Following pino
307 * will be used only for fsynced inodes after checkpoint.
308 */
309 try_to_fix_pino(inode);
91942321
JK		 310 clear_inode_flag(inode, FI_APPEND_WRITE);
311 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 312 goto out;
313 }
88bd02c9 314sync_nodes:
c29fd0c0 315 atomic_inc(&sbi->wb_sync_req[NODE]);
50fa53ec 316 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
c29fd0c0 317 atomic_dec(&sbi->wb_sync_req[NODE]);
c267ec15
JK		 318 if (ret)
319 goto out;
51455b19 320
871f599f 321 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 322 if (unlikely(f2fs_cp_error(sbi))) {
323 ret = -EIO;
871f599f 324 goto out;
6d5a1495 325 }
871f599f 326
4d57b86d 327 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 328 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 329 f2fs_write_inode(inode, NULL);
330 goto sync_nodes;
fbfa2cc5 331 }
51455b19 332
b6a245eb
JK		 333 /*
334 * If it's atomic_write, it's just fine to keep write ordering. So
335 * here we don't need to wait for node write completion, since we use
336 * node chain which serializes node blocks. If one of node writes are
337 * reordered, we can see simply broken chain, resulting in stopping
338 * roll-forward recovery. It means we'll recover all or none node blocks
339 * given fsync mark.
340 */
341 if (!atomic) {
50fa53ec 342 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
b6a245eb
JK		 343 if (ret)
344 goto out;
345 }
51455b19
CL		 346
347 /* once recovery info is written, don't need to tack this */
4d57b86d 348 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 349 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 350flush_out:
d6290814 351 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 352 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 353 if (!ret) {
4d57b86d 354 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 355 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 356 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 357 }
d0239e1b 358 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 359out:
a5fd5050 360 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 361 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 362 return ret;
363}
364
608514de
JK		 365int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
366{
1f227a3e
JK		 367 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
368 return -EIO;
608514de
JK		 369 return f2fs_do_sync_file(file, start, end, datasync, false);
370}
371
7f7670fe
JK		 372static pgoff_t __get_first_dirty_index(struct address_space *mapping,
373 pgoff_t pgofs, int whence)
374{
8faab642 375 struct page *page;
7f7670fe
JK		 376 int nr_pages;
377
378 if (whence != SEEK_DATA)
379 return 0;
380
381 /* find first dirty page index */
8faab642
JK		 382 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
383 1, &page);
384 if (!nr_pages)
385 return ULONG_MAX;
386 pgofs = page->index;
387 put_page(page);
7f7670fe
JK		 388 return pgofs;
389}
390
e1da7872
CY		 391static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
392 pgoff_t dirty, pgoff_t pgofs, int whence)
7f7670fe
JK		 393{
394 switch (whence) {
395 case SEEK_DATA:
396 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
93770ab7 397 __is_valid_data_blkaddr(blkaddr))
7f7670fe
JK		 398 return true;
399 break;
400 case SEEK_HOLE:
401 if (blkaddr == NULL_ADDR)
402 return true;
403 break;
404 }
405 return false;
406}
407
267378d4
CY		 408static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
409{
410 struct inode *inode = file->f_mapping->host;
411 loff_t maxbytes = inode->i_sb->s_maxbytes;
412 struct dnode_of_data dn;
7f7670fe
JK		 413 pgoff_t pgofs, end_offset, dirty;
414 loff_t data_ofs = offset;
415 loff_t isize;
267378d4
CY		 416 int err = 0;
417
5955102c 418 inode_lock(inode);
267378d4
CY		 419
420 isize = i_size_read(inode);
421 if (offset >= isize)
422 goto fail;
423
424 /* handle inline data case */
622f28ae 425 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 426 if (whence == SEEK_HOLE)
427 data_ofs = isize;
428 goto found;
429 }
430
09cbfeaf 431 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 432
7f7670fe
JK		 433 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
434
09cbfeaf 435 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 436 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 437 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 438 if (err && err != -ENOENT) {
439 goto fail;
440 } else if (err == -ENOENT) {
e1c42045 441 /* direct node does not exists */
267378d4 442 if (whence == SEEK_DATA) {
4d57b86d 443 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 444 continue;
445 } else {
446 goto found;
447 }
448 }
449
81ca7350 450 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 451
452 /* find data/hole in dnode block */
453 for (; dn.ofs_in_node < end_offset;
454 dn.ofs_in_node++, pgofs++,
09cbfeaf 455 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 456 block_t blkaddr;
f11e98bd 457
7a2af766
CY		 458 blkaddr = datablock_addr(dn.inode,
459 dn.node_page, dn.ofs_in_node);
267378d4 460
c9b60788
CY		 461 if (__is_valid_data_blkaddr(blkaddr) &&
462 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
93770ab7 463 blkaddr, DATA_GENERIC_ENHANCE)) {
c9b60788
CY		 464 f2fs_put_dnode(&dn);
465 goto fail;
466 }
467
e1da7872
CY		 468 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
469 pgofs, whence)) {
267378d4
CY		 470 f2fs_put_dnode(&dn);
471 goto found;
472 }
473 }
474 f2fs_put_dnode(&dn);
475 }
476
477 if (whence == SEEK_DATA)
478 goto fail;
267378d4 479found:
fe369bc8
JK		 480 if (whence == SEEK_HOLE && data_ofs > isize)
481 data_ofs = isize;
5955102c 482 inode_unlock(inode);
267378d4
CY		 483 return vfs_setpos(file, data_ofs, maxbytes);
484fail:
5955102c 485 inode_unlock(inode);
267378d4
CY		 486 return -ENXIO;
487}
488
489static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
490{
491 struct inode *inode = file->f_mapping->host;
492 loff_t maxbytes = inode->i_sb->s_maxbytes;
493
494 switch (whence) {
495 case SEEK_SET:
496 case SEEK_CUR:
497 case SEEK_END:
498 return generic_file_llseek_size(file, offset, whence,
499 maxbytes, i_size_read(inode));
500 case SEEK_DATA:
501 case SEEK_HOLE:
0b4c5afd
JK		 502 if (offset < 0)
503 return -ENXIO;
267378d4
CY		 504 return f2fs_seek_block(file, offset, whence);
505 }
506
507 return -EINVAL;
508}
509
fbfa2cc5
JK		 510static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
511{
b3d208f9 512 struct inode *inode = file_inode(file);
b9d777b8 513 int err;
b3d208f9 514
1f227a3e
JK		 515 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
516 return -EIO;
517
4c8ff709
CY		 518 if (!f2fs_is_compress_backend_ready(inode))
519 return -EOPNOTSUPP;
520
b3d208f9 521 /* we don't need to use inline_data strictly */
b9d777b8
JK		 522 err = f2fs_convert_inline_inode(inode);
523 if (err)
524 return err;
b3d208f9 525
fbfa2cc5
JK		 526 file_accessed(file);
527 vma->vm_ops = &f2fs_file_vm_ops;
4c8ff709 528 set_inode_flag(inode, FI_MMAP_FILE);
fbfa2cc5
JK		 529 return 0;
530}
531
fcc85a4d
JK		 532static int f2fs_file_open(struct inode *inode, struct file *filp)
533{
2e168c82 534 int err = fscrypt_file_open(inode, filp);
fcc85a4d 535
95ae251f
EB		 536 if (err)
537 return err;
538
4c8ff709
CY		 539 if (!f2fs_is_compress_backend_ready(inode))
540 return -EOPNOTSUPP;
541
95ae251f 542 err = fsverity_file_open(inode, filp);
2e168c82
EB		 543 if (err)
544 return err;
b91050a8
HL		 545
546 filp->f_mode |= FMODE_NOWAIT;
547
0abd675e 548 return dquot_file_open(inode, filp);
fcc85a4d
JK		 549}
550
4d57b86d 551void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 552{
4081363f 553 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 554 struct f2fs_node *raw_node;
19b2c30d 555 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 556 __le32 *addr;
7a2af766 557 int base = 0;
4c8ff709
CY		 558 bool compressed_cluster = false;
559 int cluster_index = 0, valid_blocks = 0;
560 int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
7a2af766
CY		 561
562 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
563 base = get_extra_isize(dn->inode);
fbfa2cc5 564
45590710 565 raw_node = F2FS_NODE(dn->node_page);
7a2af766 566 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 567
4c8ff709
CY		 568 /* Assumption: truncateion starts with cluster */
569 for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
fbfa2cc5 570 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 571
4c8ff709
CY		 572 if (f2fs_compressed_file(dn->inode) &&
573 !(cluster_index & (cluster_size - 1))) {
574 if (compressed_cluster)
575 f2fs_i_compr_blocks_update(dn->inode,
576 valid_blocks, false);
577 compressed_cluster = (blkaddr == COMPRESS_ADDR);
578 valid_blocks = 0;
579 }
580
fbfa2cc5
JK		 581 if (blkaddr == NULL_ADDR)
582 continue;
583
e1509cf2 584 dn->data_blkaddr = NULL_ADDR;
4d57b86d 585 f2fs_set_data_blkaddr(dn);
c9b60788 586
4c8ff709
CY		 587 if (__is_valid_data_blkaddr(blkaddr)) {
588 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
93770ab7 589 DATA_GENERIC_ENHANCE))
4c8ff709
CY		 590 continue;
591 if (compressed_cluster)
592 valid_blocks++;
593 }
c9b60788 594
3c6c2beb 595 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 596 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
4c8ff709
CY		 597
598 f2fs_invalidate_blocks(sbi, blkaddr);
fbfa2cc5
JK		 599 nr_free++;
600 }
19b2c30d 601
4c8ff709
CY		 602 if (compressed_cluster)
603 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
604
fbfa2cc5 605 if (nr_free) {
19b2c30d
CY		 606 pgoff_t fofs;
607 /*
608 * once we invalidate valid blkaddr in range [ofs, ofs + count],
609 * we will invalidate all blkaddr in the whole range.
610 */
4d57b86d 611 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 612 dn->inode) + ofs;
19b2c30d 613 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 614 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 615 }
616 dn->ofs_in_node = ofs;
51dd6249 617
d0239e1b 618 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 619 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
620 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 621}
622
4d57b86d 623void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 624{
d02a6e61 625 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
fbfa2cc5
JK		 626}
627
0bfcfcca 628static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 629 bool cache_only)
fbfa2cc5 630{
193bea1d 631 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 632 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 633 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 634 struct page *page;
635
43f3eae1 636 if (!offset && !cache_only)
b3d208f9 637 return 0;
fbfa2cc5 638
43f3eae1 639 if (cache_only) {
34b5d5c2 640 page = find_lock_page(mapping, index);
43f3eae1
JK		 641 if (page && PageUptodate(page))
642 goto truncate_out;
643 f2fs_put_page(page, 1);
b3d208f9 644 return 0;
43f3eae1 645 }
fbfa2cc5 646
4c8ff709
CY		 647 if (f2fs_compressed_file(inode))
648 return 0;
649
4d57b86d 650 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 651 if (IS_ERR(page))
a78aaa2c 652 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 653truncate_out:
bae0ee7a 654 f2fs_wait_on_page_writeback(page, DATA, true, true);
09cbfeaf 655 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 656
657 /* An encrypted inode should have a key and truncate the last page. */
62230e0d 658 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
a9bcf9bc 659 if (!cache_only)
0bfcfcca 660 set_page_dirty(page);
fbfa2cc5 661 f2fs_put_page(page, 1);
b3d208f9 662 return 0;
fbfa2cc5
JK		 663}
664
4c8ff709 665static int do_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 666{
4081363f 667 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 668 struct dnode_of_data dn;
669 pgoff_t free_from;
9ffe0fb5 670 int count = 0, err = 0;
b3d208f9 671 struct page *ipage;
0bfcfcca 672 bool truncate_page = false;
fbfa2cc5 673
51dd6249
NJ		 674 trace_f2fs_truncate_blocks_enter(inode, from);
675
df033caf 676 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 677
09210c97
CY		 678 if (free_from >= sbi->max_file_blocks)
679 goto free_partial;
680
764aa3e9 681 if (lock)
c42d28ce 682 f2fs_lock_op(sbi);
9ffe0fb5 683
4d57b86d 684 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 685 if (IS_ERR(ipage)) {
686 err = PTR_ERR(ipage);
687 goto out;
688 }
689
690 if (f2fs_has_inline_data(inode)) {
4d57b86d 691 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 692 f2fs_put_page(ipage, 1);
0bfcfcca 693 truncate_page = true;
b3d208f9
JK		 694 goto out;
695 }
696
697 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 698 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 699 if (err) {
700 if (err == -ENOENT)
701 goto free_next;
b3d208f9 702 goto out;
1ce86bf6
JK		 703 }
704
81ca7350 705 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 706
707 count -= dn.ofs_in_node;
9850cf4a 708 f2fs_bug_on(sbi, count < 0);
39936837 709
fbfa2cc5 710 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 711 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 712 free_from += count;
713 }
714
715 f2fs_put_dnode(&dn);
716free_next:
4d57b86d 717 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 718out:
719 if (lock)
c42d28ce 720 f2fs_unlock_op(sbi);
09210c97 721free_partial:
b3d208f9
JK		 722 /* lastly zero out the first data page */
723 if (!err)
0bfcfcca 724 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 725
51dd6249 726 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 727 return err;
728}
729
4c8ff709
CY		 730int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
731{
732 u64 free_from = from;
733
734 /*
735 * for compressed file, only support cluster size
736 * aligned truncation.
737 */
738 if (f2fs_compressed_file(inode)) {
739 size_t cluster_shift = PAGE_SHIFT +
740 F2FS_I(inode)->i_log_cluster_size;
741 size_t cluster_mask = (1 << cluster_shift) - 1;
742
743 free_from = from >> cluster_shift;
744 if (from & cluster_mask)
745 free_from++;
746 free_from <<= cluster_shift;
747 }
748
749 return do_truncate_blocks(inode, free_from, lock);
750}
751
9a449e9c 752int f2fs_truncate(struct inode *inode)
fbfa2cc5 753{
b0154891
CY		 754 int err;
755
1f227a3e
JK		 756 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
757 return -EIO;
758
fbfa2cc5
JK		 759 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
760 S_ISLNK(inode->i_mode)))
b0154891 761 return 0;
fbfa2cc5 762
51dd6249
NJ		 763 trace_f2fs_truncate(inode);
764
14b44d23 765 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
c45d6002 766 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
14b44d23
JK		 767 return -EIO;
768 }
7fa750a1 769
92dffd01 770 /* we should check inline_data size */
b9d777b8 771 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 772 err = f2fs_convert_inline_inode(inode);
773 if (err)
774 return err;
92dffd01
JK		 775 }
776
c42d28ce 777 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 778 if (err)
779 return err;
780
078cd827 781 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 782 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 783 return 0;
fbfa2cc5
JK		 784}
785
a528d35e 786int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 787 u32 request_mask, unsigned int query_flags)
fbfa2cc5 788{
a528d35e 789 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 790 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 791 struct f2fs_inode *ri;
1c6d8ee4
CY		 792 unsigned int flags;
793
1c1d35df 794 if (f2fs_has_extra_attr(inode) &&
7beb01f7 795 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
1c1d35df
CY		 796 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
797 stat->result_mask |= STATX_BTIME;
798 stat->btime.tv_sec = fi->i_crtime.tv_sec;
799 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
800 }
801
36098557 802 flags = fi->i_flags;
59c84408 803 if (flags & F2FS_APPEND_FL)
1c6d8ee4 804 stat->attributes |= STATX_ATTR_APPEND;
62230e0d 805 if (IS_ENCRYPTED(inode))
1c6d8ee4 806 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 807 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 808 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 809 if (flags & F2FS_NODUMP_FL)
1c6d8ee4 810 stat->attributes |= STATX_ATTR_NODUMP;
924e3194
EB		 811 if (IS_VERITY(inode))
812 stat->attributes |= STATX_ATTR_VERITY;
1c6d8ee4
CY		 813
814 stat->attributes_mask |= (STATX_ATTR_APPEND |
1c6d8ee4
CY		 815 STATX_ATTR_ENCRYPTED |
816 STATX_ATTR_IMMUTABLE |
924e3194
EB		 817 STATX_ATTR_NODUMP |
818 STATX_ATTR_VERITY);
1c6d8ee4 819
fbfa2cc5 820 generic_fillattr(inode, stat);
5b4267d1
JK		 821
822 /* we need to show initial sectors used for inline_data/dentries */
823 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
824 f2fs_has_inline_dentry(inode))
825 stat->blocks += (stat->size + 511) >> 9;
826
fbfa2cc5
JK		 827 return 0;
828}
829
830#ifdef CONFIG_F2FS_FS_POSIX_ACL
831static void __setattr_copy(struct inode *inode, const struct iattr *attr)
832{
fbfa2cc5
JK		 833 unsigned int ia_valid = attr->ia_valid;
834
835 if (ia_valid & ATTR_UID)
836 inode->i_uid = attr->ia_uid;
837 if (ia_valid & ATTR_GID)
838 inode->i_gid = attr->ia_gid;
eb31e2f6
AG		 839 if (ia_valid & ATTR_ATIME)
840 inode->i_atime = attr->ia_atime;
841 if (ia_valid & ATTR_MTIME)
842 inode->i_mtime = attr->ia_mtime;
843 if (ia_valid & ATTR_CTIME)
844 inode->i_ctime = attr->ia_ctime;
fbfa2cc5
JK		 845 if (ia_valid & ATTR_MODE) {
846 umode_t mode = attr->ia_mode;
847
848 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
849 mode &= ~S_ISGID;
91942321 850 set_acl_inode(inode, mode);
fbfa2cc5
JK		 851 }
852}
853#else
854#define __setattr_copy setattr_copy
855#endif
856
857int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
858{
2b0143b5 859 struct inode *inode = d_inode(dentry);
fbfa2cc5
JK		 860 int err;
861
1f227a3e
JK		 862 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
863 return -EIO;
864
4c8ff709
CY		 865 if ((attr->ia_valid & ATTR_SIZE) &&
866 !f2fs_is_compress_backend_ready(inode))
867 return -EOPNOTSUPP;
868
31051c85 869 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 870 if (err)
871 return err;
872
20bb2479
EB		 873 err = fscrypt_prepare_setattr(dentry, attr);
874 if (err)
875 return err;
876
95ae251f
EB		 877 err = fsverity_prepare_setattr(dentry, attr);
878 if (err)
879 return err;
880
0abd675e
CY		 881 if (is_quota_modification(inode, attr)) {
882 err = dquot_initialize(inode);
883 if (err)
884 return err;
885 }
886 if ((attr->ia_valid & ATTR_UID &&
887 !uid_eq(attr->ia_uid, inode->i_uid)) ||
888 (attr->ia_valid & ATTR_GID &&
889 !gid_eq(attr->ia_gid, inode->i_gid))) {
af033b2a 890 f2fs_lock_op(F2FS_I_SB(inode));
0abd675e 891 err = dquot_transfer(inode, attr);
af033b2a
CY		 892 if (err) {
893 set_sbi_flag(F2FS_I_SB(inode),
894 SBI_QUOTA_NEED_REPAIR);
895 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e 896 return err;
af033b2a
CY		 897 }
898 /*
899 * update uid/gid under lock_op(), so that dquot and inode can
900 * be updated atomically.
901 */
902 if (attr->ia_valid & ATTR_UID)
903 inode->i_uid = attr->ia_uid;
904 if (attr->ia_valid & ATTR_GID)
905 inode->i_gid = attr->ia_gid;
906 f2fs_mark_inode_dirty_sync(inode, true);
907 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e
CY		 908 }
909
09db6a2e 910 if (attr->ia_valid & ATTR_SIZE) {
cfb9a34d
JK		 911 loff_t old_size = i_size_read(inode);
912
913 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
914 /*
915 * should convert inline inode before i_size_write to
916 * keep smaller than inline_data size with inline flag.
917 */
918 err = f2fs_convert_inline_inode(inode);
919 if (err)
920 return err;
921 }
a33c1502 922
a33c1502 923 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 924 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502
CY		 925
926 truncate_setsize(inode, attr->ia_size);
927
cfb9a34d 928 if (attr->ia_size <= old_size)
9a449e9c 929 err = f2fs_truncate(inode);
a33c1502
CY		 930 /*
931 * do not trim all blocks after i_size if target size is
932 * larger than i_size.
933 */
a33c1502 934 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 935 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
a33c1502
CY		 936 if (err)
937 return err;
0cab80ee 938
c10c9820 939 spin_lock(&F2FS_I(inode)->i_size_lock);
cfb9a34d 940 inode->i_mtime = inode->i_ctime = current_time(inode);
a0d00fad 941 F2FS_I(inode)->last_disk_size = i_size_read(inode);
c10c9820 942 spin_unlock(&F2FS_I(inode)->i_size_lock);
fbfa2cc5
JK		 943 }
944
945 __setattr_copy(inode, attr);
946
947 if (attr->ia_valid & ATTR_MODE) {
4d57b86d 948 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
91942321
JK		 949 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
950 inode->i_mode = F2FS_I(inode)->i_acl_mode;
951 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 952 }
953 }
954
c0ed4405 955 /* file size may changed here */
ca597bdd 956 f2fs_mark_inode_dirty_sync(inode, true);
15d04354
JK		 957
958 /* inode change will produce dirty node pages flushed by checkpoint */
959 f2fs_balance_fs(F2FS_I_SB(inode), true);
960
fbfa2cc5
JK		 961 return err;
962}
963
964const struct inode_operations f2fs_file_inode_operations = {
965 .getattr = f2fs_getattr,
966 .setattr = f2fs_setattr,
967 .get_acl = f2fs_get_acl,
a6dda0e6 968 .set_acl = f2fs_set_acl,
fbfa2cc5 969#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 970 .listxattr = f2fs_listxattr,
fbfa2cc5 971#endif
9ab70134 972 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 973};
974
6394328a 975static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 976 loff_t start, loff_t len)
977{
4081363f 978 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 979 struct page *page;
980
981 if (!len)
6394328a 982 return 0;
fbfa2cc5 983
2c4db1a6 984 f2fs_balance_fs(sbi, true);
bd43df02 985
e479556b 986 f2fs_lock_op(sbi);
4d57b86d 987 page = f2fs_get_new_data_page(inode, NULL, index, false);
e479556b 988 f2fs_unlock_op(sbi);
fbfa2cc5 989
6394328a
CY		 990 if (IS_ERR(page))
991 return PTR_ERR(page);
992
bae0ee7a 993 f2fs_wait_on_page_writeback(page, DATA, true, true);
6394328a
CY		 994 zero_user(page, start, len);
995 set_page_dirty(page);
996 f2fs_put_page(page, 1);
997 return 0;
fbfa2cc5
JK		 998}
999
4d57b86d 1000int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
fbfa2cc5 1001{
fbfa2cc5
JK		 1002 int err;
1003
ea58711e 1004 while (pg_start < pg_end) {
fbfa2cc5 1005 struct dnode_of_data dn;
ea58711e 1006 pgoff_t end_offset, count;
9eaeba70 1007
fbfa2cc5 1008 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1009 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 1010 if (err) {
ea58711e 1011 if (err == -ENOENT) {
4d57b86d
CY		 1012 pg_start = f2fs_get_next_page_offset(&dn,
1013 pg_start);
fbfa2cc5 1014 continue;
ea58711e 1015 }
fbfa2cc5
JK		 1016 return err;
1017 }
1018
81ca7350 1019 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 1020 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1021
1022 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1023
4d57b86d 1024 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5 1025 f2fs_put_dnode(&dn);
ea58711e
CY		 1026
1027 pg_start += count;
fbfa2cc5
JK		 1028 }
1029 return 0;
1030}
1031
a66c7b2f 1032static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 1033{
1034 pgoff_t pg_start, pg_end;
1035 loff_t off_start, off_end;
b9d777b8 1036 int ret;
fbfa2cc5 1037
b9d777b8
JK		 1038 ret = f2fs_convert_inline_inode(inode);
1039 if (ret)
1040 return ret;
9ffe0fb5 1041
09cbfeaf
KS		 1042 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1043 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 1044
09cbfeaf
KS		 1045 off_start = offset & (PAGE_SIZE - 1);
1046 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 1047
1048 if (pg_start == pg_end) {
6394328a 1049 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 1050 off_end - off_start);
6394328a
CY		 1051 if (ret)
1052 return ret;
fbfa2cc5 1053 } else {
6394328a
CY		 1054 if (off_start) {
1055 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1056 PAGE_SIZE - off_start);
6394328a
CY		 1057 if (ret)
1058 return ret;
1059 }
1060 if (off_end) {
1061 ret = fill_zero(inode, pg_end, 0, off_end);
1062 if (ret)
1063 return ret;
1064 }
fbfa2cc5
JK		 1065
1066 if (pg_start < pg_end) {
1067 struct address_space *mapping = inode->i_mapping;
1068 loff_t blk_start, blk_end;
4081363f 1069 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 1070
2c4db1a6 1071 f2fs_balance_fs(sbi, true);
fbfa2cc5 1072
09cbfeaf
KS		 1073 blk_start = (loff_t)pg_start << PAGE_SHIFT;
1074 blk_end = (loff_t)pg_end << PAGE_SHIFT;
a33c1502 1075
a33c1502 1076 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1077 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502 1078
fbfa2cc5
JK		 1079 truncate_inode_pages_range(mapping, blk_start,
1080 blk_end - 1);
39936837 1081
e479556b 1082 f2fs_lock_op(sbi);
4d57b86d 1083 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
e479556b 1084 f2fs_unlock_op(sbi);
a33c1502 1085
5a3a2d83 1086 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 1087 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
fbfa2cc5
JK		 1088 }
1089 }
1090
fbfa2cc5
JK		 1091 return ret;
1092}
1093
0a2aa8fb
JK		 1094static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1095 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 1096{
1097 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1098 struct dnode_of_data dn;
0a2aa8fb 1099 int ret, done, i;
ecbaa406 1100
0a2aa8fb 1101next_dnode:
6e2c64ad 1102 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1103 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 1104 if (ret && ret != -ENOENT) {
1105 return ret;
1106 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 1107 if (dn.max_level == 0)
1108 return -ENOENT;
4c8ff709
CY		 1109 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1110 dn.ofs_in_node, len);
0a2aa8fb
JK		 1111 blkaddr += done;
1112 do_replace += done;
1113 goto next;
1114 }
1115
1116 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1117 dn.ofs_in_node, len);
1118 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 1119 *blkaddr = datablock_addr(dn.inode,
1120 dn.node_page, dn.ofs_in_node);
93770ab7
CY		 1121
1122 if (__is_valid_data_blkaddr(*blkaddr) &&
1123 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1124 DATA_GENERIC_ENHANCE)) {
1125 f2fs_put_dnode(&dn);
10f966bb 1126 return -EFSCORRUPTED;
93770ab7
CY		 1127 }
1128
4d57b86d 1129 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb
JK		 1130
1131 if (test_opt(sbi, LFS)) {
1132 f2fs_put_dnode(&dn);
fd114ab2 1133 return -EOPNOTSUPP;
0a2aa8fb
JK		 1134 }
1135
6e2c64ad 1136 /* do not invalidate this block address */
f28b3434 1137 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 1138 *do_replace = 1;
b4ace337 1139 }
6e2c64ad 1140 }
0a2aa8fb
JK		 1141 f2fs_put_dnode(&dn);
1142next:
1143 len -= done;
1144 off += done;
1145 if (len)
1146 goto next_dnode;
1147 return 0;
1148}
b4ace337 1149
0a2aa8fb
JK		 1150static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1151 int *do_replace, pgoff_t off, int len)
1152{
1153 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1154 struct dnode_of_data dn;
1155 int ret, i;
b4ace337 1156
0a2aa8fb
JK		 1157 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1158 if (*do_replace == 0)
1159 continue;
b4ace337 1160
0a2aa8fb 1161 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1162 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1163 if (ret) {
1164 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1165 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1166 } else {
1167 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1168 }
0a2aa8fb
JK		 1169 f2fs_put_dnode(&dn);
1170 }
1171 return 0;
1172}
1173
1174static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1175 block_t *blkaddr, int *do_replace,
1176 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1177{
1178 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1179 pgoff_t i = 0;
1180 int ret;
36abef4e 1181
0a2aa8fb
JK		 1182 while (i < len) {
1183 if (blkaddr[i] == NULL_ADDR && !full) {
1184 i++;
1185 continue;
6e2c64ad 1186 }
b4ace337 1187
0a2aa8fb
JK		 1188 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1189 struct dnode_of_data dn;
1190 struct node_info ni;
1191 size_t new_size;
1192 pgoff_t ilen;
b4ace337 1193
0a2aa8fb 1194 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1195 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1196 if (ret)
1197 return ret;
b4ace337 1198
7735730d
CY		 1199 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1200 if (ret) {
1201 f2fs_put_dnode(&dn);
1202 return ret;
1203 }
1204
0a2aa8fb
JK		 1205 ilen = min((pgoff_t)
1206 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1207 dn.ofs_in_node, len - i);
1208 do {
7a2af766
CY		 1209 dn.data_blkaddr = datablock_addr(dn.inode,
1210 dn.node_page, dn.ofs_in_node);
4d57b86d 1211 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1212
1213 if (do_replace[i]) {
1214 f2fs_i_blocks_write(src_inode,
0abd675e 1215 1, false, false);
0a2aa8fb 1216 f2fs_i_blocks_write(dst_inode,
0abd675e 1217 1, true, false);
0a2aa8fb
JK		 1218 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1219 blkaddr[i], ni.version, true, false);
1220
1221 do_replace[i] = 0;
1222 }
1223 dn.ofs_in_node++;
1224 i++;
1f0d5c91 1225 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
0a2aa8fb
JK		 1226 if (dst_inode->i_size < new_size)
1227 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1228 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1229
0a2aa8fb
JK		 1230 f2fs_put_dnode(&dn);
1231 } else {
1232 struct page *psrc, *pdst;
1233
4d57b86d
CY		 1234 psrc = f2fs_get_lock_data_page(src_inode,
1235 src + i, true);
0a2aa8fb
JK		 1236 if (IS_ERR(psrc))
1237 return PTR_ERR(psrc);
4d57b86d 1238 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1239 true);
1240 if (IS_ERR(pdst)) {
1241 f2fs_put_page(psrc, 1);
1242 return PTR_ERR(pdst);
1243 }
1244 f2fs_copy_page(psrc, pdst);
1245 set_page_dirty(pdst);
1246 f2fs_put_page(pdst, 1);
6e2c64ad 1247 f2fs_put_page(psrc, 1);
b4ace337 1248
4d57b86d
CY		 1249 ret = f2fs_truncate_hole(src_inode,
1250 src + i, src + i + 1);
0a2aa8fb
JK		 1251 if (ret)
1252 return ret;
1253 i++;
1254 }
6e2c64ad
JK		 1255 }
1256 return 0;
0a2aa8fb 1257}
b4ace337 1258
0a2aa8fb
JK		 1259static int __exchange_data_block(struct inode *src_inode,
1260 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1261 pgoff_t len, bool full)
0a2aa8fb
JK		 1262{
1263 block_t *src_blkaddr;
1264 int *do_replace;
363cad7f 1265 pgoff_t olen;
0a2aa8fb
JK		 1266 int ret;
1267
363cad7f 1268 while (len) {
d02a6e61 1269 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
0a2aa8fb 1270
628b3d14 1271 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c 1272 array_size(olen, sizeof(block_t)),
4f4460c0 1273 GFP_NOFS);
363cad7f
JK		 1274 if (!src_blkaddr)
1275 return -ENOMEM;
0a2aa8fb 1276
628b3d14 1277 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c 1278 array_size(olen, sizeof(int)),
4f4460c0 1279 GFP_NOFS);
363cad7f
JK		 1280 if (!do_replace) {
1281 kvfree(src_blkaddr);
1282 return -ENOMEM;
1283 }
0a2aa8fb 1284
363cad7f
JK		 1285 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1286 do_replace, src, olen);
1287 if (ret)
1288 goto roll_back;
0a2aa8fb 1289
363cad7f
JK		 1290 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1291 do_replace, src, dst, olen, full);
1292 if (ret)
1293 goto roll_back;
1294
1295 src += olen;
1296 dst += olen;
1297 len -= olen;
1298
1299 kvfree(src_blkaddr);
1300 kvfree(do_replace);
1301 }
0a2aa8fb
JK		 1302 return 0;
1303
1304roll_back:
9fd62605 1305 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1306 kvfree(src_blkaddr);
1307 kvfree(do_replace);
6e2c64ad
JK		 1308 return ret;
1309}
b4ace337 1310
6f8d4455 1311static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
6e2c64ad
JK		 1312{
1313 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f91108b8 1314 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
6f8d4455
JK		 1315 pgoff_t start = offset >> PAGE_SHIFT;
1316 pgoff_t end = (offset + len) >> PAGE_SHIFT;
0a2aa8fb 1317 int ret;
6e2c64ad 1318
0a2aa8fb 1319 f2fs_balance_fs(sbi, true);
5f281fab 1320
6f8d4455
JK		 1321 /* avoid gc operation during block exchange */
1322 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1323 down_write(&F2FS_I(inode)->i_mmap_sem);
5f281fab 1324
6f8d4455
JK		 1325 f2fs_lock_op(sbi);
1326 f2fs_drop_extent_tree(inode);
1327 truncate_pagecache(inode, offset);
0a2aa8fb
JK		 1328 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1329 f2fs_unlock_op(sbi);
6f8d4455
JK		 1330
1331 up_write(&F2FS_I(inode)->i_mmap_sem);
1332 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1333 return ret;
1334}
1335
1336static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1337{
b4ace337
CY		 1338 loff_t new_size;
1339 int ret;
1340
b4ace337
CY		 1341 if (offset + len >= i_size_read(inode))
1342 return -EINVAL;
1343
1344 /* collapse range should be aligned to block size of f2fs. */
1345 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1346 return -EINVAL;
1347
b9d777b8
JK		 1348 ret = f2fs_convert_inline_inode(inode);
1349 if (ret)
1350 return ret;
97a7b2c2 1351
b4ace337
CY		 1352 /* write out all dirty pages from offset */
1353 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1354 if (ret)
6f8d4455 1355 return ret;
b4ace337 1356
6f8d4455 1357 ret = f2fs_do_collapse(inode, offset, len);
b4ace337 1358 if (ret)
6f8d4455 1359 return ret;
b4ace337 1360
6e2c64ad 1361 /* write out all moved pages, if possible */
6f8d4455 1362 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1363 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1364 truncate_pagecache(inode, offset);
1365
b4ace337 1366 new_size = i_size_read(inode) - len;
6e2c64ad 1367 truncate_pagecache(inode, new_size);
b4ace337 1368
c42d28ce 1369 ret = f2fs_truncate_blocks(inode, new_size, true);
6f8d4455 1370 up_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337 1371 if (!ret)
fc9581c8 1372 f2fs_i_size_write(inode, new_size);
b4ace337
CY		 1373 return ret;
1374}
1375
6e961949
CY		 1376static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1377 pgoff_t end)
1378{
1379 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1380 pgoff_t index = start;
1381 unsigned int ofs_in_node = dn->ofs_in_node;
1382 blkcnt_t count = 0;
1383 int ret;
1384
1385 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1386 if (datablock_addr(dn->inode, dn->node_page,
1387 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1388 count++;
1389 }
1390
1391 dn->ofs_in_node = ofs_in_node;
4d57b86d 1392 ret = f2fs_reserve_new_blocks(dn, count);
6e961949
CY		 1393 if (ret)
1394 return ret;
1395
1396 dn->ofs_in_node = ofs_in_node;
1397 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1398 dn->data_blkaddr = datablock_addr(dn->inode,
1399 dn->node_page, dn->ofs_in_node);
6e961949 1400 /*
4d57b86d 1401 * f2fs_reserve_new_blocks will not guarantee entire block
6e961949
CY		 1402 * allocation.
1403 */
1404 if (dn->data_blkaddr == NULL_ADDR) {
1405 ret = -ENOSPC;
1406 break;
1407 }
1408 if (dn->data_blkaddr != NEW_ADDR) {
4d57b86d 1409 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
6e961949 1410 dn->data_blkaddr = NEW_ADDR;
4d57b86d 1411 f2fs_set_data_blkaddr(dn);
6e961949
CY		 1412 }
1413 }
1414
1415 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1416
1417 return ret;
1418}
1419
75cd4e09
CY		 1420static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1421 int mode)
1422{
1423 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1424 struct address_space *mapping = inode->i_mapping;
1425 pgoff_t index, pg_start, pg_end;
1426 loff_t new_size = i_size_read(inode);
1427 loff_t off_start, off_end;
1428 int ret = 0;
1429
75cd4e09
CY		 1430 ret = inode_newsize_ok(inode, (len + offset));
1431 if (ret)
1432 return ret;
1433
b9d777b8
JK		 1434 ret = f2fs_convert_inline_inode(inode);
1435 if (ret)
1436 return ret;
75cd4e09
CY		 1437
1438 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1439 if (ret)
6f8d4455 1440 return ret;
75cd4e09 1441
09cbfeaf
KS		 1442 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1443 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1444
09cbfeaf
KS		 1445 off_start = offset & (PAGE_SIZE - 1);
1446 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1447
1448 if (pg_start == pg_end) {
6394328a
CY		 1449 ret = fill_zero(inode, pg_start, off_start,
1450 off_end - off_start);
1451 if (ret)
6f8d4455 1452 return ret;
6394328a 1453
75cd4e09
CY		 1454 new_size = max_t(loff_t, new_size, offset + len);
1455 } else {
1456 if (off_start) {
6394328a 1457 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1458 PAGE_SIZE - off_start);
6394328a 1459 if (ret)
6f8d4455 1460 return ret;
6394328a 1461
75cd4e09 1462 new_size = max_t(loff_t, new_size,
09cbfeaf 1463 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1464 }
1465
6e961949 1466 for (index = pg_start; index < pg_end;) {
75cd4e09 1467 struct dnode_of_data dn;
6e961949
CY		 1468 unsigned int end_offset;
1469 pgoff_t end;
75cd4e09 1470
c7079853 1471 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1472 down_write(&F2FS_I(inode)->i_mmap_sem);
c7079853
CY		 1473
1474 truncate_pagecache_range(inode,
1475 (loff_t)index << PAGE_SHIFT,
1476 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1477
75cd4e09
CY		 1478 f2fs_lock_op(sbi);
1479
6e961949 1480 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1481 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1482 if (ret) {
1483 f2fs_unlock_op(sbi);
6f8d4455 1484 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1485 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
75cd4e09
CY		 1486 goto out;
1487 }
1488
6e961949
CY		 1489 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1490 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1491
1492 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09 1493 f2fs_put_dnode(&dn);
c7079853 1494
75cd4e09 1495 f2fs_unlock_op(sbi);
6f8d4455 1496 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1497 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
9434fcde
CY		 1498
1499 f2fs_balance_fs(sbi, dn.node_changed);
1500
6e961949
CY		 1501 if (ret)
1502 goto out;
75cd4e09 1503
6e961949 1504 index = end;
75cd4e09 1505 new_size = max_t(loff_t, new_size,
6e961949 1506 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1507 }
1508
1509 if (off_end) {
6394328a
CY		 1510 ret = fill_zero(inode, pg_end, 0, off_end);
1511 if (ret)
1512 goto out;
1513
75cd4e09
CY		 1514 new_size = max_t(loff_t, new_size, offset + len);
1515 }
1516 }
1517
1518out:
17cd07ae
CY		 1519 if (new_size > i_size_read(inode)) {
1520 if (mode & FALLOC_FL_KEEP_SIZE)
1521 file_set_keep_isize(inode);
1522 else
1523 f2fs_i_size_write(inode, new_size);
1524 }
75cd4e09
CY		 1525 return ret;
1526}
1527
f62185d0
CY		 1528static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1529{
1530 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1531 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1532 loff_t new_size;
6e2c64ad 1533 int ret = 0;
f62185d0 1534
f62185d0 1535 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1536 ret = inode_newsize_ok(inode, new_size);
1537 if (ret)
1538 return ret;
f62185d0
CY		 1539
1540 if (offset >= i_size_read(inode))
1541 return -EINVAL;
1542
1543 /* insert range should be aligned to block size of f2fs. */
1544 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1545 return -EINVAL;
1546
b9d777b8
JK		 1547 ret = f2fs_convert_inline_inode(inode);
1548 if (ret)
1549 return ret;
97a7b2c2 1550
2c4db1a6 1551 f2fs_balance_fs(sbi, true);
2a340760 1552
5a3a2d83 1553 down_write(&F2FS_I(inode)->i_mmap_sem);
c42d28ce 1554 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
6f8d4455 1555 up_write(&F2FS_I(inode)->i_mmap_sem);
f62185d0 1556 if (ret)
6f8d4455 1557 return ret;
f62185d0
CY		 1558
1559 /* write out all dirty pages from offset */
1560 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1561 if (ret)
6f8d4455 1562 return ret;
f62185d0 1563
09cbfeaf
KS		 1564 pg_start = offset >> PAGE_SHIFT;
1565 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1566 delta = pg_end - pg_start;
f91108b8 1567 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
0a2aa8fb 1568
6f8d4455
JK		 1569 /* avoid gc operation during block exchange */
1570 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1571 down_write(&F2FS_I(inode)->i_mmap_sem);
1572 truncate_pagecache(inode, offset);
1573
0a2aa8fb
JK		 1574 while (!ret && idx > pg_start) {
1575 nr = idx - pg_start;
1576 if (nr > delta)
1577 nr = delta;
1578 idx -= nr;
f62185d0 1579
f62185d0 1580 f2fs_lock_op(sbi);
5f281fab
JK		 1581 f2fs_drop_extent_tree(inode);
1582
0a2aa8fb
JK		 1583 ret = __exchange_data_block(inode, inode, idx,
1584 idx + delta, nr, false);
f62185d0
CY		 1585 f2fs_unlock_op(sbi);
1586 }
6f8d4455
JK		 1587 up_write(&F2FS_I(inode)->i_mmap_sem);
1588 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f62185d0 1589
6e2c64ad 1590 /* write out all moved pages, if possible */
6f8d4455 1591 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1592 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1593 truncate_pagecache(inode, offset);
6f8d4455 1594 up_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1595
1596 if (!ret)
fc9581c8 1597 f2fs_i_size_write(inode, new_size);
f62185d0
CY		 1598 return ret;
1599}
1600
fbfa2cc5
JK		 1601static int expand_inode_data(struct inode *inode, loff_t offset,
1602 loff_t len, int mode)
1603{
4081363f 1604 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1605 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
f9d6d059
CY		 1606 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1607 .m_may_create = true };
e12dd7bd 1608 pgoff_t pg_end;
fbfa2cc5 1609 loff_t new_size = i_size_read(inode);
e12dd7bd 1610 loff_t off_end;
a7de6086 1611 int err;
fbfa2cc5 1612
a7de6086
JK		 1613 err = inode_newsize_ok(inode, (len + offset));
1614 if (err)
1615 return err;
fbfa2cc5 1616
a7de6086
JK		 1617 err = f2fs_convert_inline_inode(inode);
1618 if (err)
1619 return err;
9e09fc85 1620
2c4db1a6 1621 f2fs_balance_fs(sbi, true);
2a340760 1622
e12dd7bd 1623 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1624 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1625
e12dd7bd
JK		 1626 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1627 map.m_len = pg_end - map.m_lblk;
1628 if (off_end)
1629 map.m_len++;
ead43275 1630
f5a53edc
JK		 1631 if (!map.m_len)
1632 return 0;
1633
1634 if (f2fs_is_pinned_file(inode)) {
1635 block_t len = (map.m_len >> sbi->log_blocks_per_seg) <<
1636 sbi->log_blocks_per_seg;
1637 block_t done = 0;
1638
1639 if (map.m_len % sbi->blocks_per_seg)
1640 len += sbi->blocks_per_seg;
1641
1642 map.m_len = sbi->blocks_per_seg;
1643next_alloc:
1644 if (has_not_enough_free_secs(sbi, 0,
1645 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
fb24fea7 1646 down_write(&sbi->gc_lock);
f5a53edc
JK		 1647 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1648 if (err && err != -ENODATA && err != -EAGAIN)
1649 goto out_err;
1650 }
1651
1652 down_write(&sbi->pin_sem);
1653 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1654 f2fs_allocate_new_segments(sbi, CURSEG_COLD_DATA);
1655 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1656 up_write(&sbi->pin_sem);
cad3836f 1657
f5a53edc
JK		 1658 done += map.m_len;
1659 len -= map.m_len;
1660 map.m_lblk += map.m_len;
1661 if (!err && len)
1662 goto next_alloc;
1663
1664 map.m_len = done;
1665 } else {
1666 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1667 }
1668out_err:
a7de6086 1669 if (err) {
e12dd7bd 1670 pgoff_t last_off;
fbfa2cc5 1671
e12dd7bd 1672 if (!map.m_len)
a7de6086 1673 return err;
98397ff3 1674
e12dd7bd
JK		 1675 last_off = map.m_lblk + map.m_len - 1;
1676
1677 /* update new size to the failed position */
1061fd48 1678 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1679 (loff_t)(last_off + 1) << PAGE_SHIFT;
1680 } else {
1681 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1682 }
1683
e8ed90a6
CY		 1684 if (new_size > i_size_read(inode)) {
1685 if (mode & FALLOC_FL_KEEP_SIZE)
1686 file_set_keep_isize(inode);
1687 else
1688 f2fs_i_size_write(inode, new_size);
1689 }
fbfa2cc5 1690
a7de6086 1691 return err;
fbfa2cc5
JK		 1692}
1693
1694static long f2fs_fallocate(struct file *file, int mode,
1695 loff_t offset, loff_t len)
1696{
6131ffaa 1697 struct inode *inode = file_inode(file);
587c0a42 1698 long ret = 0;
fbfa2cc5 1699
1f227a3e
JK		 1700 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1701 return -EIO;
00e09c0b
CY		 1702 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1703 return -ENOSPC;
4c8ff709
CY		 1704 if (!f2fs_is_compress_backend_ready(inode))
1705 return -EOPNOTSUPP;
1f227a3e 1706
c998012b
CY		 1707 /* f2fs only support ->fallocate for regular file */
1708 if (!S_ISREG(inode->i_mode))
1709 return -EINVAL;
1710
62230e0d 1711 if (IS_ENCRYPTED(inode) &&
f62185d0 1712 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1713 return -EOPNOTSUPP;
1714
4c8ff709
CY		 1715 if (f2fs_compressed_file(inode) &&
1716 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1717 FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1718 return -EOPNOTSUPP;
1719
b4ace337 1720 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1721 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1722 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1723 return -EOPNOTSUPP;
1724
5955102c 1725 inode_lock(inode);
3375f696 1726
587c0a42
TY		 1727 if (mode & FALLOC_FL_PUNCH_HOLE) {
1728 if (offset >= inode->i_size)
1729 goto out;
1730
a66c7b2f 1731 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1732 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1733 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1734 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1735 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1736 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1737 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1738 } else {
fbfa2cc5 1739 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1740 }
fbfa2cc5 1741
3af60a49 1742 if (!ret) {
078cd827 1743 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1744 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1745 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1746 }
3375f696 1747
587c0a42 1748out:
5955102c 1749 inode_unlock(inode);
3375f696 1750
c01e2853 1751 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1752 return ret;
1753}
1754
1e84371f
JK		 1755static int f2fs_release_file(struct inode *inode, struct file *filp)
1756{
de5307e4
JK		 1757 /*
1758 * f2fs_relase_file is called at every close calls. So we should
1759 * not drop any inmemory pages by close called by other process.
1760 */
1761 if (!(filp->f_mode & FMODE_WRITE) ||
1762 atomic_read(&inode->i_writecount) != 1)
1763 return 0;
1764
1e84371f
JK		 1765 /* some remained atomic pages should discarded */
1766 if (f2fs_is_atomic_file(inode))
4d57b86d 1767 f2fs_drop_inmem_pages(inode);
1e84371f 1768 if (f2fs_is_volatile_file(inode)) {
91942321 1769 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1770 filemap_fdatawrite(inode->i_mapping);
91942321 1771 clear_inode_flag(inode, FI_DROP_CACHE);
dfa74280
CY		 1772 clear_inode_flag(inode, FI_VOLATILE_FILE);
1773 stat_dec_volatile_write(inode);
1e84371f
JK		 1774 }
1775 return 0;
1776}
1777
7a10f017 1778static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1779{
7a10f017
JK		 1780 struct inode *inode = file_inode(file);
1781
1782 /*
1783 * If the process doing a transaction is crashed, we should do
1784 * roll-back. Otherwise, other reader/write can see corrupted database
1785 * until all the writers close its file. Since this should be done
1786 * before dropping file lock, it needs to do in ->flush.
1787 */
1788 if (f2fs_is_atomic_file(inode) &&
1789 F2FS_I(inode)->inmem_task == current)
4d57b86d 1790 f2fs_drop_inmem_pages(inode);
7a10f017 1791 return 0;
fbfa2cc5
JK		 1792}
1793
36098557 1794static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
2c1d0305
CY		 1795{
1796 struct f2fs_inode_info *fi = F2FS_I(inode);
99eabb91
JK		 1797 u32 masked_flags = fi->i_flags & mask;
1798
1799 f2fs_bug_on(F2FS_I_SB(inode), (iflags & ~mask));
2c1d0305
CY		 1800
1801 /* Is it quota file? Do not allow user to mess with it */
1802 if (IS_NOQUOTA(inode))
1803 return -EPERM;
1804
99eabb91 1805 if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
2c2eb7a3
DR		 1806 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1807 return -EOPNOTSUPP;
1808 if (!f2fs_empty_dir(inode))
1809 return -ENOTEMPTY;
1810 }
1811
4c8ff709
CY		 1812 if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1813 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1814 return -EOPNOTSUPP;
1815 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1816 return -EINVAL;
1817 }
1818
99eabb91 1819 if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
2536ac68
CY		 1820 if (S_ISREG(inode->i_mode) && (masked_flags & F2FS_COMPR_FL)) {
1821 if (f2fs_disable_compressed_file(inode))
1822 return -EINVAL;
1823 }
4c8ff709
CY		 1824 if (iflags & F2FS_NOCOMP_FL)
1825 return -EINVAL;
1826 if (iflags & F2FS_COMPR_FL) {
1827 int err = f2fs_convert_inline_inode(inode);
1828
1829 if (err)
1830 return err;
1831
1832 if (!f2fs_may_compress(inode))
1833 return -EINVAL;
1834
1835 set_compress_context(inode);
1836 }
1837 }
99eabb91
JK		 1838 if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1839 if (masked_flags & F2FS_COMPR_FL)
4c8ff709
CY		 1840 return -EINVAL;
1841 }
1842
d5e5efa2 1843 fi->i_flags = iflags | (fi->i_flags & ~mask);
4c8ff709
CY		 1844 f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1845 (fi->i_flags & F2FS_NOCOMP_FL));
2c1d0305 1846
59c84408 1847 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1848 set_inode_flag(inode, FI_PROJ_INHERIT);
1849 else
1850 clear_inode_flag(inode, FI_PROJ_INHERIT);
1851
1852 inode->i_ctime = current_time(inode);
1853 f2fs_set_inode_flags(inode);
b32e0190 1854 f2fs_mark_inode_dirty_sync(inode, true);
2c1d0305
CY		 1855 return 0;
1856}
1857
36098557
EB		 1858/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1859
1860/*
1861 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1862 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1863 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1864 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1865 */
1866
1867static const struct {
1868 u32 iflag;
1869 u32 fsflag;
1870} f2fs_fsflags_map[] = {
4c8ff709 1871 { F2FS_COMPR_FL, FS_COMPR_FL },
36098557
EB		 1872 { F2FS_SYNC_FL, FS_SYNC_FL },
1873 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1874 { F2FS_APPEND_FL, FS_APPEND_FL },
1875 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1876 { F2FS_NOATIME_FL, FS_NOATIME_FL },
4c8ff709 1877 { F2FS_NOCOMP_FL, FS_NOCOMP_FL },
36098557
EB		 1878 { F2FS_INDEX_FL, FS_INDEX_FL },
1879 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1880 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
2c2eb7a3 1881 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
36098557
EB		 1882};
1883
1884#define F2FS_GETTABLE_FS_FL ( \
4c8ff709 1885 FS_COMPR_FL | \
36098557
EB		 1886 FS_SYNC_FL | \
1887 FS_IMMUTABLE_FL | \
1888 FS_APPEND_FL | \
1889 FS_NODUMP_FL | \
1890 FS_NOATIME_FL | \
4c8ff709 1891 FS_NOCOMP_FL | \
36098557
EB		 1892 FS_INDEX_FL | \
1893 FS_DIRSYNC_FL | \
1894 FS_PROJINHERIT_FL | \
1895 FS_ENCRYPT_FL | \
1896 FS_INLINE_DATA_FL | \
95ae251f 1897 FS_NOCOW_FL | \
fbc246a1 1898 FS_VERITY_FL | \
2c2eb7a3 1899 FS_CASEFOLD_FL)
36098557
EB		 1900
1901#define F2FS_SETTABLE_FS_FL ( \
4c8ff709 1902 FS_COMPR_FL | \
36098557
EB		 1903 FS_SYNC_FL | \
1904 FS_IMMUTABLE_FL | \
1905 FS_APPEND_FL | \
1906 FS_NODUMP_FL | \
1907 FS_NOATIME_FL | \
4c8ff709 1908 FS_NOCOMP_FL | \
36098557 1909 FS_DIRSYNC_FL | \
2c2eb7a3
DR		 1910 FS_PROJINHERIT_FL | \
1911 FS_CASEFOLD_FL)
36098557
EB		 1912
1913/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1914static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1915{
1916 u32 fsflags = 0;
1917 int i;
1918
1919 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1920 if (iflags & f2fs_fsflags_map[i].iflag)
1921 fsflags |= f2fs_fsflags_map[i].fsflag;
1922
1923 return fsflags;
1924}
1925
1926/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1927static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1928{
1929 u32 iflags = 0;
1930 int i;
1931
1932 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1933 if (fsflags & f2fs_fsflags_map[i].fsflag)
1934 iflags |= f2fs_fsflags_map[i].iflag;
1935
1936 return iflags;
1937}
1938
1939static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1940{
1941 struct inode *inode = file_inode(filp);
1942 struct f2fs_inode_info *fi = F2FS_I(inode);
1943 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1944
1945 if (IS_ENCRYPTED(inode))
1946 fsflags |= FS_ENCRYPT_FL;
95ae251f
EB		 1947 if (IS_VERITY(inode))
1948 fsflags |= FS_VERITY_FL;
36098557
EB		 1949 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1950 fsflags |= FS_INLINE_DATA_FL;
1951 if (is_inode_flag_set(inode, FI_PIN_FILE))
1952 fsflags |= FS_NOCOW_FL;
1953
1954 fsflags &= F2FS_GETTABLE_FS_FL;
1955
1956 return put_user(fsflags, (int __user *)arg);
1957}
1958
52656e6c
JK		 1959static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1960{
1961 struct inode *inode = file_inode(filp);
a1f32eec
EB		 1962 struct f2fs_inode_info *fi = F2FS_I(inode);
1963 u32 fsflags, old_fsflags;
36098557 1964 u32 iflags;
52656e6c 1965 int ret;
fbfa2cc5 1966
7fb17fe4
CY		 1967 if (!inode_owner_or_capable(inode))
1968 return -EACCES;
1969
36098557 1970 if (get_user(fsflags, (int __user *)arg))
7fb17fe4
CY		 1971 return -EFAULT;
1972
36098557
EB		 1973 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1974 return -EOPNOTSUPP;
1975 fsflags &= F2FS_SETTABLE_FS_FL;
1976
1977 iflags = f2fs_fsflags_to_iflags(fsflags);
1978 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1979 return -EOPNOTSUPP;
1980
52656e6c
JK		 1981 ret = mnt_want_write_file(filp);
1982 if (ret)
1983 return ret;
fbfa2cc5 1984
5955102c 1985 inode_lock(inode);
fbfa2cc5 1986
a1f32eec
EB		 1987 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1988 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1989 if (ret)
1990 goto out;
1991
36098557
EB		 1992 ret = f2fs_setflags_common(inode, iflags,
1993 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
a1f32eec 1994out:
a72d4b97 1995 inode_unlock(inode);
52656e6c
JK		 1996 mnt_drop_write_file(filp);
1997 return ret;
1998}
4b2fecc8 1999
d49f3e89
CY		 2000static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
2001{
2002 struct inode *inode = file_inode(filp);
2003
2004 return put_user(inode->i_generation, (int __user *)arg);
2005}
2006
88b88a66
JK		 2007static int f2fs_ioc_start_atomic_write(struct file *filp)
2008{
2009 struct inode *inode = file_inode(filp);
743b620c
JK		 2010 struct f2fs_inode_info *fi = F2FS_I(inode);
2011 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f4c9c743 2012 int ret;
88b88a66
JK		 2013
2014 if (!inode_owner_or_capable(inode))
2015 return -EACCES;
2016
e811898c
JK		 2017 if (!S_ISREG(inode->i_mode))
2018 return -EINVAL;
2019
038d0698
CY		 2020 if (filp->f_flags & O_DIRECT)
2021 return -EINVAL;
2022
7fb17fe4
CY		 2023 ret = mnt_want_write_file(filp);
2024 if (ret)
2025 return ret;
2026
0fac558b
CY		 2027 inode_lock(inode);
2028
4c8ff709
CY		 2029 f2fs_disable_compressed_file(inode);
2030
455e3a58
JK		 2031 if (f2fs_is_atomic_file(inode)) {
2032 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
2033 ret = -EINVAL;
7fb17fe4 2034 goto out;
455e3a58 2035 }
88b88a66 2036
f4c9c743
CY		 2037 ret = f2fs_convert_inline_inode(inode);
2038 if (ret)
7fb17fe4 2039 goto out;
88b88a66 2040
6f8d4455
JK		 2041 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2042
31867b23
JK		 2043 /*
2044 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2045 * f2fs_is_atomic_file.
2046 */
2047 if (get_dirty_pages(inode))
dcbb4c10
JP		 2048 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2049 inode->i_ino, get_dirty_pages(inode));
c27753d6 2050 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
6f8d4455
JK		 2051 if (ret) {
2052 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 2053 goto out;
6f8d4455 2054 }
31867b23 2055
743b620c
JK		 2056 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2057 if (list_empty(&fi->inmem_ilist))
2058 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
677017d1 2059 sbi->atomic_files++;
743b620c
JK		 2060 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2061
2062 /* add inode in inmem_list first and set atomic_file */
054afda9 2063 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 2064 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
6f8d4455 2065 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 2066
6f8d4455 2067 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7a10f017 2068 F2FS_I(inode)->inmem_task = current;
26a28a0c 2069 stat_update_max_atomic_write(inode);
684ca7e5 2070out:
0fac558b 2071 inode_unlock(inode);
7fb17fe4 2072 mnt_drop_write_file(filp);
c27753d6 2073 return ret;
88b88a66
JK		 2074}
2075
2076static int f2fs_ioc_commit_atomic_write(struct file *filp)
2077{
2078 struct inode *inode = file_inode(filp);
2079 int ret;
2080
2081 if (!inode_owner_or_capable(inode))
2082 return -EACCES;
2083
2084 ret = mnt_want_write_file(filp);
2085 if (ret)
2086 return ret;
2087
6f8d4455 2088 f2fs_balance_fs(F2FS_I_SB(inode), true);
0fac558b 2089
6f8d4455 2090 inode_lock(inode);
1dc0f899 2091
b169c3c5
CY		 2092 if (f2fs_is_volatile_file(inode)) {
2093 ret = -EINVAL;
7fb17fe4 2094 goto err_out;
b169c3c5 2095 }
7fb17fe4 2096
6282adbf 2097 if (f2fs_is_atomic_file(inode)) {
4d57b86d 2098 ret = f2fs_commit_inmem_pages(inode);
5fe45743 2099 if (ret)
edb27dee 2100 goto err_out;
5fe45743 2101
26a28a0c 2102 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
743b620c
JK		 2103 if (!ret)
2104 f2fs_drop_inmem_pages(inode);
26a28a0c 2105 } else {
774e1b78 2106 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 2107 }
edb27dee 2108err_out:
2ef79ecb
CY		 2109 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2110 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2111 ret = -EINVAL;
2112 }
0fac558b 2113 inode_unlock(inode);
88b88a66
JK		 2114 mnt_drop_write_file(filp);
2115 return ret;
2116}
2117
02a1335f
JK		 2118static int f2fs_ioc_start_volatile_write(struct file *filp)
2119{
2120 struct inode *inode = file_inode(filp);
f4c9c743 2121 int ret;
02a1335f
JK		 2122
2123 if (!inode_owner_or_capable(inode))
2124 return -EACCES;
2125
8ff0971f
CY		 2126 if (!S_ISREG(inode->i_mode))
2127 return -EINVAL;
2128
7fb17fe4
CY		 2129 ret = mnt_want_write_file(filp);
2130 if (ret)
2131 return ret;
2132
0fac558b
CY		 2133 inode_lock(inode);
2134
1e84371f 2135 if (f2fs_is_volatile_file(inode))
7fb17fe4 2136 goto out;
1e84371f 2137
f4c9c743
CY		 2138 ret = f2fs_convert_inline_inode(inode);
2139 if (ret)
7fb17fe4 2140 goto out;
b3d208f9 2141
648d50ba
CY		 2142 stat_inc_volatile_write(inode);
2143 stat_update_max_volatile_write(inode);
2144
91942321 2145 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 2146 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2147out:
0fac558b 2148 inode_unlock(inode);
7fb17fe4
CY		 2149 mnt_drop_write_file(filp);
2150 return ret;
02a1335f
JK		 2151}
2152
1e84371f
JK		 2153static int f2fs_ioc_release_volatile_write(struct file *filp)
2154{
2155 struct inode *inode = file_inode(filp);
7fb17fe4 2156 int ret;
1e84371f
JK		 2157
2158 if (!inode_owner_or_capable(inode))
2159 return -EACCES;
2160
7fb17fe4
CY		 2161 ret = mnt_want_write_file(filp);
2162 if (ret)
2163 return ret;
2164
0fac558b
CY		 2165 inode_lock(inode);
2166
1e84371f 2167 if (!f2fs_is_volatile_file(inode))
7fb17fe4 2168 goto out;
1e84371f 2169
7fb17fe4
CY		 2170 if (!f2fs_is_first_block_written(inode)) {
2171 ret = truncate_partial_data_page(inode, 0, true);
2172 goto out;
2173 }
3c6c2beb 2174
7fb17fe4
CY		 2175 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2176out:
0fac558b 2177 inode_unlock(inode);
7fb17fe4
CY		 2178 mnt_drop_write_file(filp);
2179 return ret;
1e84371f
JK		 2180}
2181
2182static int f2fs_ioc_abort_volatile_write(struct file *filp)
2183{
2184 struct inode *inode = file_inode(filp);
2185 int ret;
2186
2187 if (!inode_owner_or_capable(inode))
2188 return -EACCES;
2189
2190 ret = mnt_want_write_file(filp);
2191 if (ret)
2192 return ret;
2193
0fac558b
CY		 2194 inode_lock(inode);
2195
26dc3d44 2196 if (f2fs_is_atomic_file(inode))
4d57b86d 2197 f2fs_drop_inmem_pages(inode);
732d5648 2198 if (f2fs_is_volatile_file(inode)) {
91942321 2199 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 2200 stat_dec_volatile_write(inode);
608514de 2201 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 2202 }
de6a8ec9 2203
455e3a58
JK		 2204 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2205
0fac558b
CY		 2206 inode_unlock(inode);
2207
1e84371f 2208 mnt_drop_write_file(filp);
d0239e1b 2209 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 2210 return ret;
2211}
2212
1abff93d
JK		 2213static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2214{
2215 struct inode *inode = file_inode(filp);
2216 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2217 struct super_block *sb = sbi->sb;
2218 __u32 in;
2a96d8ad 2219 int ret = 0;
1abff93d
JK		 2220
2221 if (!capable(CAP_SYS_ADMIN))
2222 return -EPERM;
2223
2224 if (get_user(in, (__u32 __user *)arg))
2225 return -EFAULT;
2226
60b2b4ee
ST		 2227 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2228 ret = mnt_want_write_file(filp);
2229 if (ret)
2230 return ret;
2231 }
7fb17fe4 2232
1abff93d
JK		 2233 switch (in) {
2234 case F2FS_GOING_DOWN_FULLSYNC:
2235 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 2236 if (IS_ERR(sb)) {
2237 ret = PTR_ERR(sb);
2238 goto out;
2239 }
2240 if (sb) {
38f91ca8 2241 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2242 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2243 thaw_bdev(sb->s_bdev, sb);
2244 }
2245 break;
2246 case F2FS_GOING_DOWN_METASYNC:
2247 /* do checkpoint only */
d027c484
CY		 2248 ret = f2fs_sync_fs(sb, 1);
2249 if (ret)
2250 goto out;
38f91ca8 2251 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2252 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2253 break;
2254 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 2255 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2256 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d 2257 break;
c912a829 2258 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 2259 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 2260 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2261 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
c912a829 2262 break;
0cd6d9b0
JK		 2263 case F2FS_GOING_DOWN_NEED_FSCK:
2264 set_sbi_flag(sbi, SBI_NEED_FSCK);
db610a64
JK		 2265 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2266 set_sbi_flag(sbi, SBI_IS_DIRTY);
0cd6d9b0
JK		 2267 /* do checkpoint only */
2268 ret = f2fs_sync_fs(sb, 1);
db610a64 2269 goto out;
1abff93d 2270 default:
7fb17fe4
CY		 2271 ret = -EINVAL;
2272 goto out;
1abff93d 2273 }
7950e9ac 2274
4d57b86d
CY		 2275 f2fs_stop_gc_thread(sbi);
2276 f2fs_stop_discard_thread(sbi);
7950e9ac 2277
4d57b86d 2278 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 2279 clear_opt(sbi, DISCARD);
2280
d0239e1b 2281 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 2282out:
60b2b4ee
ST		 2283 if (in != F2FS_GOING_DOWN_FULLSYNC)
2284 mnt_drop_write_file(filp);
559e87c4
CY		 2285
2286 trace_f2fs_shutdown(sbi, in, ret);
2287
7fb17fe4 2288 return ret;
1abff93d
JK		 2289}
2290
52656e6c
JK		 2291static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2292{
2293 struct inode *inode = file_inode(filp);
2294 struct super_block *sb = inode->i_sb;
2295 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2296 struct fstrim_range range;
2297 int ret;
4b2fecc8 2298
52656e6c
JK		 2299 if (!capable(CAP_SYS_ADMIN))
2300 return -EPERM;
4b2fecc8 2301
7d20c8ab 2302 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
52656e6c 2303 return -EOPNOTSUPP;
4b2fecc8 2304
52656e6c
JK		 2305 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2306 sizeof(range)))
2307 return -EFAULT;
4b2fecc8 2308
7fb17fe4
CY		 2309 ret = mnt_want_write_file(filp);
2310 if (ret)
2311 return ret;
2312
52656e6c
JK		 2313 range.minlen = max((unsigned int)range.minlen,
2314 q->limits.discard_granularity);
2315 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 2316 mnt_drop_write_file(filp);
52656e6c
JK		 2317 if (ret < 0)
2318 return ret;
4b2fecc8 2319
52656e6c
JK		 2320 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2321 sizeof(range)))
2322 return -EFAULT;
d0239e1b 2323 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 2324 return 0;
2325}
2326
f424f664
JK		 2327static bool uuid_is_nonzero(__u8 u[16])
2328{
2329 int i;
2330
2331 for (i = 0; i < 16; i++)
2332 if (u[i])
2333 return true;
2334 return false;
2335}
2336
2337static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2338{
f424f664
JK		 2339 struct inode *inode = file_inode(filp);
2340
7beb01f7 2341 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
ead710b7
CY		 2342 return -EOPNOTSUPP;
2343
d0239e1b 2344 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2345
db717d8e 2346 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 2347}
2348
2349static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2350{
7beb01f7 2351 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
ead710b7 2352 return -EOPNOTSUPP;
db717d8e 2353 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 2354}
2355
2356static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2357{
2358 struct inode *inode = file_inode(filp);
2359 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2360 int err;
2361
7beb01f7 2362 if (!f2fs_sb_has_encrypt(sbi))
f424f664
JK		 2363 return -EOPNOTSUPP;
2364
f424f664
JK		 2365 err = mnt_want_write_file(filp);
2366 if (err)
2367 return err;
2368
846ae671 2369 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2370
2371 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2372 goto got_it;
2373
f424f664
JK		 2374 /* update superblock with uuid */
2375 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2376
c5bda1c8 2377 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2378 if (err) {
2379 /* undo new data */
2380 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2381 goto out_err;
f424f664
JK		 2382 }
2383got_it:
2384 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2385 16))
d0d3f1b3
CY		 2386 err = -EFAULT;
2387out_err:
846ae671 2388 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2389 mnt_drop_write_file(filp);
2390 return err;
f424f664
JK		 2391}
2392
8ce589c7
EB		 2393static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2394 unsigned long arg)
2395{
2396 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2397 return -EOPNOTSUPP;
2398
2399 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2400}
2401
2402static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2403{
2404 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2405 return -EOPNOTSUPP;
2406
2407 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2408}
2409
2410static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2411{
2412 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2413 return -EOPNOTSUPP;
2414
2415 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2416}
2417
2418static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2419 unsigned long arg)
2420{
2421 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2422 return -EOPNOTSUPP;
2423
2424 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2425}
2426
2427static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2428 unsigned long arg)
2429{
2430 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2431 return -EOPNOTSUPP;
2432
2433 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2434}
2435
c1c1b583
CY		 2436static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2437{
2438 struct inode *inode = file_inode(filp);
2439 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2440 __u32 sync;
7fb17fe4 2441 int ret;
c1c1b583
CY		 2442
2443 if (!capable(CAP_SYS_ADMIN))
2444 return -EPERM;
2445
d530d4d8 2446 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2447 return -EFAULT;
2448
d530d4d8
CY		 2449 if (f2fs_readonly(sbi->sb))
2450 return -EROFS;
c1c1b583 2451
7fb17fe4
CY		 2452 ret = mnt_want_write_file(filp);
2453 if (ret)
2454 return ret;
2455
d530d4d8 2456 if (!sync) {
fb24fea7 2457 if (!down_write_trylock(&sbi->gc_lock)) {
7fb17fe4
CY		 2458 ret = -EBUSY;
2459 goto out;
2460 }
d530d4d8 2461 } else {
fb24fea7 2462 down_write(&sbi->gc_lock);
c1c1b583
CY		 2463 }
2464
e066b83c 2465 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2466out:
2467 mnt_drop_write_file(filp);
2468 return ret;
c1c1b583
CY		 2469}
2470
34dc77ad
JK		 2471static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2472{
2473 struct inode *inode = file_inode(filp);
2474 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2475 struct f2fs_gc_range range;
2476 u64 end;
2477 int ret;
2478
2479 if (!capable(CAP_SYS_ADMIN))
2480 return -EPERM;
2481
2482 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2483 sizeof(range)))
2484 return -EFAULT;
2485
2486 if (f2fs_readonly(sbi->sb))
2487 return -EROFS;
2488
b82f6e34 2489 end = range.start + range.len;
fbbf7799
ST		 2490 if (end < range.start || range.start < MAIN_BLKADDR(sbi) ||
2491 end >= MAX_BLKADDR(sbi))
b82f6e34 2492 return -EINVAL;
b82f6e34 2493
34dc77ad
JK		 2494 ret = mnt_want_write_file(filp);
2495 if (ret)
2496 return ret;
2497
34dc77ad
JK		 2498do_more:
2499 if (!range.sync) {
fb24fea7 2500 if (!down_write_trylock(&sbi->gc_lock)) {
34dc77ad
JK		 2501 ret = -EBUSY;
2502 goto out;
2503 }
2504 } else {
fb24fea7 2505 down_write(&sbi->gc_lock);
34dc77ad
JK		 2506 }
2507
2508 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
67b0e42b 2509 range.start += BLKS_PER_SEC(sbi);
34dc77ad
JK		 2510 if (range.start <= end)
2511 goto do_more;
2512out:
2513 mnt_drop_write_file(filp);
2514 return ret;
2515}
2516
059c0648 2517static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2518{
2519 struct inode *inode = file_inode(filp);
2520 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2521 int ret;
456b88e4
CY		 2522
2523 if (!capable(CAP_SYS_ADMIN))
2524 return -EPERM;
2525
2526 if (f2fs_readonly(sbi->sb))
2527 return -EROFS;
2528
4354994f 2529 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
dcbb4c10 2530 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
4354994f
DR		 2531 return -EINVAL;
2532 }
2533
7fb17fe4
CY		 2534 ret = mnt_want_write_file(filp);
2535 if (ret)
2536 return ret;
2537
2538 ret = f2fs_sync_fs(sbi->sb, 1);
2539
2540 mnt_drop_write_file(filp);
2541 return ret;
456b88e4
CY		 2542}
2543
d323d005
CY		 2544static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2545 struct file *filp,
2546 struct f2fs_defragment *range)
2547{
2548 struct inode *inode = file_inode(filp);
f3d98e74 2549 struct f2fs_map_blocks map = { .m_next_extent = NULL,
f4f0b677
JZ		 2550 .m_seg_type = NO_CHECK_TYPE ,
2551 .m_may_create = false };
1061fd48 2552 struct extent_info ei = {0, 0, 0};
f3d98e74 2553 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2554 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2555 unsigned int total = 0, sec_num;
d323d005
CY		 2556 block_t blk_end = 0;
2557 bool fragmented = false;
2558 int err;
2559
2560 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2561 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2562 return -EINVAL;
2563
09cbfeaf
KS		 2564 pg_start = range->start >> PAGE_SHIFT;
2565 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2566
2c4db1a6 2567 f2fs_balance_fs(sbi, true);
d323d005 2568
5955102c 2569 inode_lock(inode);
d323d005
CY		 2570
2571 /* writeback all dirty pages in the range */
2572 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2573 range->start + range->len - 1);
d323d005
CY		 2574 if (err)
2575 goto out;
2576
2577 /*
2578 * lookup mapping info in extent cache, skip defragmenting if physical
2579 * block addresses are continuous.
2580 */
2581 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2582 if (ei.fofs + ei.len >= pg_end)
2583 goto out;
2584 }
2585
2586 map.m_lblk = pg_start;
f3d98e74 2587 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2588
2589 /*
2590 * lookup mapping info in dnode page cache, skip defragmenting if all
2591 * physical block addresses are continuous even if there are hole(s)
2592 * in logical blocks.
2593 */
2594 while (map.m_lblk < pg_end) {
a1c1e9b7 2595 map.m_len = pg_end - map.m_lblk;
f2220c7f 2596 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2597 if (err)
2598 goto out;
2599
2600 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2601 map.m_lblk = next_pgofs;
d323d005
CY		 2602 continue;
2603 }
2604
25a912e5 2605 if (blk_end && blk_end != map.m_pblk)
d323d005 2606 fragmented = true;
25a912e5
CY		 2607
2608 /* record total count of block that we're going to move */
2609 total += map.m_len;
2610
d323d005
CY		 2611 blk_end = map.m_pblk + map.m_len;
2612
2613 map.m_lblk += map.m_len;
d323d005
CY		 2614 }
2615
d3a1a0e1
CY		 2616 if (!fragmented) {
2617 total = 0;
d323d005 2618 goto out;
d3a1a0e1 2619 }
d323d005 2620
f91108b8 2621 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
d323d005
CY		 2622
2623 /*
2624 * make sure there are enough free section for LFS allocation, this can
2625 * avoid defragment running in SSR mode when free section are allocated
2626 * intensively
2627 */
7f3037a5 2628 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2629 err = -EAGAIN;
2630 goto out;
2631 }
2632
25a912e5
CY		 2633 map.m_lblk = pg_start;
2634 map.m_len = pg_end - pg_start;
2635 total = 0;
2636
d323d005
CY		 2637 while (map.m_lblk < pg_end) {
2638 pgoff_t idx;
2639 int cnt = 0;
2640
2641do_map:
a1c1e9b7 2642 map.m_len = pg_end - map.m_lblk;
f2220c7f 2643 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2644 if (err)
2645 goto clear_out;
2646
2647 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2648 map.m_lblk = next_pgofs;
d3a1a0e1 2649 goto check;
d323d005
CY		 2650 }
2651
91942321 2652 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2653
2654 idx = map.m_lblk;
2655 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2656 struct page *page;
2657
4d57b86d 2658 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2659 if (IS_ERR(page)) {
2660 err = PTR_ERR(page);
2661 goto clear_out;
2662 }
2663
2664 set_page_dirty(page);
2665 f2fs_put_page(page, 1);
2666
2667 idx++;
2668 cnt++;
2669 total++;
2670 }
2671
2672 map.m_lblk = idx;
d3a1a0e1
CY		 2673check:
2674 if (map.m_lblk < pg_end && cnt < blk_per_seg)
d323d005
CY		 2675 goto do_map;
2676
91942321 2677 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2678
2679 err = filemap_fdatawrite(inode->i_mapping);
2680 if (err)
2681 goto out;
2682 }
2683clear_out:
91942321 2684 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2685out:
5955102c 2686 inode_unlock(inode);
d323d005 2687 if (!err)
09cbfeaf 2688 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2689 return err;
2690}
2691
2692static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2693{
2694 struct inode *inode = file_inode(filp);
2695 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2696 struct f2fs_defragment range;
2697 int err;
2698
2699 if (!capable(CAP_SYS_ADMIN))
2700 return -EPERM;
2701
7eab0c0d 2702 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2703 return -EINVAL;
2704
d7563861
KM		 2705 if (f2fs_readonly(sbi->sb))
2706 return -EROFS;
d323d005
CY		 2707
2708 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2709 sizeof(range)))
2710 return -EFAULT;
d323d005
CY		 2711
2712 /* verify alignment of offset & size */
d7563861
KM		 2713 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2714 return -EINVAL;
d323d005 2715
1941d7bc 2716 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2717 sbi->max_file_blocks))
2718 return -EINVAL;
2719
2720 err = mnt_want_write_file(filp);
2721 if (err)
2722 return err;
1941d7bc 2723
d323d005 2724 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2725 mnt_drop_write_file(filp);
2726
d0239e1b 2727 f2fs_update_time(sbi, REQ_TIME);
d323d005 2728 if (err < 0)
d7563861 2729 return err;
d323d005
CY		 2730
2731 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2732 sizeof(range)))
d7563861
KM		 2733 return -EFAULT;
2734
2735 return 0;
d323d005
CY		 2736}
2737
4dd6f977
JK		 2738static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2739 struct file *file_out, loff_t pos_out, size_t len)
2740{
2741 struct inode *src = file_inode(file_in);
2742 struct inode *dst = file_inode(file_out);
2743 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2744 size_t olen = len, dst_max_i_size = 0;
2745 size_t dst_osize;
2746 int ret;
2747
2748 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2749 src->i_sb != dst->i_sb)
2750 return -EXDEV;
2751
2752 if (unlikely(f2fs_readonly(src->i_sb)))
2753 return -EROFS;
2754
fe8494bf
CY		 2755 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2756 return -EINVAL;
4dd6f977 2757
62230e0d 2758 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
4dd6f977
JK		 2759 return -EOPNOTSUPP;
2760
d95fd91c
FL		 2761 if (src == dst) {
2762 if (pos_in == pos_out)
2763 return 0;
2764 if (pos_out > pos_in && pos_out < pos_in + len)
2765 return -EINVAL;
2766 }
2767
4dd6f977 2768 inode_lock(src);
20a3d61d 2769 if (src != dst) {
bb06664a
CY		 2770 ret = -EBUSY;
2771 if (!inode_trylock(dst))
2772 goto out;
20a3d61d 2773 }
4dd6f977
JK		 2774
2775 ret = -EINVAL;
2776 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2777 goto out_unlock;
2778 if (len == 0)
2779 olen = len = src->i_size - pos_in;
2780 if (pos_in + len == src->i_size)
2781 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2782 if (len == 0) {
2783 ret = 0;
2784 goto out_unlock;
2785 }
2786
2787 dst_osize = dst->i_size;
2788 if (pos_out + olen > dst->i_size)
2789 dst_max_i_size = pos_out + olen;
2790
2791 /* verify the end result is block aligned */
2792 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2793 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2794 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2795 goto out_unlock;
2796
2797 ret = f2fs_convert_inline_inode(src);
2798 if (ret)
2799 goto out_unlock;
2800
2801 ret = f2fs_convert_inline_inode(dst);
2802 if (ret)
2803 goto out_unlock;
2804
2805 /* write out all dirty pages from offset */
2806 ret = filemap_write_and_wait_range(src->i_mapping,
2807 pos_in, pos_in + len);
2808 if (ret)
2809 goto out_unlock;
2810
2811 ret = filemap_write_and_wait_range(dst->i_mapping,
2812 pos_out, pos_out + len);
2813 if (ret)
2814 goto out_unlock;
2815
2816 f2fs_balance_fs(sbi, true);
6f8d4455
JK		 2817
2818 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2819 if (src != dst) {
2820 ret = -EBUSY;
2821 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2822 goto out_src;
2823 }
2824
4dd6f977 2825 f2fs_lock_op(sbi);
61e4da11
FL		 2826 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2827 pos_out >> F2FS_BLKSIZE_BITS,
2828 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2829
2830 if (!ret) {
2831 if (dst_max_i_size)
2832 f2fs_i_size_write(dst, dst_max_i_size);
2833 else if (dst_osize != dst->i_size)
2834 f2fs_i_size_write(dst, dst_osize);
2835 }
2836 f2fs_unlock_op(sbi);
6f8d4455
JK		 2837
2838 if (src != dst)
b2532c69 2839 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
6f8d4455
JK		 2840out_src:
2841 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2842out_unlock:
2843 if (src != dst)
4dd6f977 2844 inode_unlock(dst);
20a3d61d 2845out:
4dd6f977
JK		 2846 inode_unlock(src);
2847 return ret;
2848}
2849
2850static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2851{
2852 struct f2fs_move_range range;
2853 struct fd dst;
2854 int err;
2855
2856 if (!(filp->f_mode & FMODE_READ) ||
2857 !(filp->f_mode & FMODE_WRITE))
2858 return -EBADF;
2859
2860 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2861 sizeof(range)))
2862 return -EFAULT;
2863
2864 dst = fdget(range.dst_fd);
2865 if (!dst.file)
2866 return -EBADF;
2867
2868 if (!(dst.file->f_mode & FMODE_WRITE)) {
2869 err = -EBADF;
2870 goto err_out;
2871 }
2872
2873 err = mnt_want_write_file(filp);
2874 if (err)
2875 goto err_out;
2876
2877 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2878 range.pos_out, range.len);
2879
2880 mnt_drop_write_file(filp);
3cecfa5f
KM		 2881 if (err)
2882 goto err_out;
4dd6f977
JK		 2883
2884 if (copy_to_user((struct f2fs_move_range __user *)arg,
2885 &range, sizeof(range)))
2886 err = -EFAULT;
2887err_out:
2888 fdput(dst);
2889 return err;
2890}
2891
e066b83c
JK		 2892static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2893{
2894 struct inode *inode = file_inode(filp);
2895 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2896 struct sit_info *sm = SIT_I(sbi);
2897 unsigned int start_segno = 0, end_segno = 0;
2898 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2899 struct f2fs_flush_device range;
2900 int ret;
2901
2902 if (!capable(CAP_SYS_ADMIN))
2903 return -EPERM;
2904
2905 if (f2fs_readonly(sbi->sb))
2906 return -EROFS;
2907
4354994f
DR		 2908 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2909 return -EINVAL;
2910
e066b83c
JK		 2911 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2912 sizeof(range)))
2913 return -EFAULT;
2914
0916878d 2915 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2c70c5e3 2916 __is_large_section(sbi)) {
dcbb4c10
JP		 2917 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2918 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
e066b83c
JK		 2919 return -EINVAL;
2920 }
2921
2922 ret = mnt_want_write_file(filp);
2923 if (ret)
2924 return ret;
2925
2926 if (range.dev_num != 0)
2927 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2928 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2929
2930 start_segno = sm->last_victim[FLUSH_DEVICE];
2931 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2932 start_segno = dev_start_segno;
2933 end_segno = min(start_segno + range.segments, dev_end_segno);
2934
2935 while (start_segno < end_segno) {
fb24fea7 2936 if (!down_write_trylock(&sbi->gc_lock)) {
e066b83c
JK		 2937 ret = -EBUSY;
2938 goto out;
2939 }
2940 sm->last_victim[GC_CB] = end_segno + 1;
2941 sm->last_victim[GC_GREEDY] = end_segno + 1;
2942 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2943 ret = f2fs_gc(sbi, true, true, start_segno);
2944 if (ret == -EAGAIN)
2945 ret = 0;
2946 else if (ret < 0)
2947 break;
2948 start_segno++;
2949 }
2950out:
2951 mnt_drop_write_file(filp);
2952 return ret;
2953}
2954
e65ef207
JK		 2955static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2956{
2957 struct inode *inode = file_inode(filp);
2958 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2959
2960 /* Must validate to set it with SQLite behavior in Android. */
2961 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2962
2963 return put_user(sb_feature, (u32 __user *)arg);
2964}
e066b83c 2965
2c1d0305 2966#ifdef CONFIG_QUOTA
78130819
CY		 2967int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2968{
2969 struct dquot *transfer_to[MAXQUOTAS] = {};
2970 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2971 struct super_block *sb = sbi->sb;
2972 int err = 0;
2973
2974 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2975 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2976 err = __dquot_transfer(inode, transfer_to);
2977 if (err)
2978 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2979 dqput(transfer_to[PRJQUOTA]);
2980 }
2981 return err;
2982}
2983
2c1d0305
CY		 2984static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2985{
2986 struct inode *inode = file_inode(filp);
2987 struct f2fs_inode_info *fi = F2FS_I(inode);
2988 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2c1d0305
CY		 2989 struct page *ipage;
2990 kprojid_t kprojid;
2991 int err;
2992
7beb01f7 2993 if (!f2fs_sb_has_project_quota(sbi)) {
2c1d0305
CY		 2994 if (projid != F2FS_DEF_PROJID)
2995 return -EOPNOTSUPP;
2996 else
2997 return 0;
2998 }
2999
3000 if (!f2fs_has_extra_attr(inode))
3001 return -EOPNOTSUPP;
3002
3003 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
3004
3005 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
3006 return 0;
3007
2c1d0305 3008 err = -EPERM;
2c1d0305
CY		 3009 /* Is it quota file? Do not allow user to mess with it */
3010 if (IS_NOQUOTA(inode))
c8e92757 3011 return err;
2c1d0305 3012
4d57b86d 3013 ipage = f2fs_get_node_page(sbi, inode->i_ino);
c8e92757
WS		 3014 if (IS_ERR(ipage))
3015 return PTR_ERR(ipage);
2c1d0305
CY		 3016
3017 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
3018 i_projid)) {
3019 err = -EOVERFLOW;
3020 f2fs_put_page(ipage, 1);
c8e92757 3021 return err;
2c1d0305
CY		 3022 }
3023 f2fs_put_page(ipage, 1);
3024
c22aecd7
CY		 3025 err = dquot_initialize(inode);
3026 if (err)
c8e92757 3027 return err;
2c1d0305 3028
78130819
CY		 3029 f2fs_lock_op(sbi);
3030 err = f2fs_transfer_project_quota(inode, kprojid);
3031 if (err)
3032 goto out_unlock;
2c1d0305
CY		 3033
3034 F2FS_I(inode)->i_projid = kprojid;
3035 inode->i_ctime = current_time(inode);
2c1d0305 3036 f2fs_mark_inode_dirty_sync(inode, true);
78130819
CY		 3037out_unlock:
3038 f2fs_unlock_op(sbi);
2c1d0305
CY		 3039 return err;
3040}
3041#else
78130819
CY		 3042int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3043{
3044 return 0;
3045}
3046
2c1d0305
CY		 3047static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
3048{
3049 if (projid != F2FS_DEF_PROJID)
3050 return -EOPNOTSUPP;
3051 return 0;
3052}
3053#endif
3054
36098557
EB		 3055/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
3056
3057/*
3058 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
3059 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
3060 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
3061 */
3062
3063static const struct {
3064 u32 iflag;
3065 u32 xflag;
3066} f2fs_xflags_map[] = {
3067 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
3068 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
3069 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
3070 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
3071 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
3072 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
3073};
3074
3075#define F2FS_SUPPORTED_XFLAGS ( \
3076 FS_XFLAG_SYNC | \
3077 FS_XFLAG_IMMUTABLE | \
3078 FS_XFLAG_APPEND | \
3079 FS_XFLAG_NODUMP | \
3080 FS_XFLAG_NOATIME | \
3081 FS_XFLAG_PROJINHERIT)
3082
3083/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
3084static inline u32 f2fs_iflags_to_xflags(u32 iflags)
3085{
3086 u32 xflags = 0;
3087 int i;
3088
3089 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3090 if (iflags & f2fs_xflags_map[i].iflag)
3091 xflags |= f2fs_xflags_map[i].xflag;
3092
2c1d0305
CY		 3093 return xflags;
3094}
3095
36098557
EB		 3096/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
3097static inline u32 f2fs_xflags_to_iflags(u32 xflags)
2c1d0305 3098{
36098557
EB		 3099 u32 iflags = 0;
3100 int i;
2c1d0305 3101
36098557
EB		 3102 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
3103 if (xflags & f2fs_xflags_map[i].xflag)
3104 iflags |= f2fs_xflags_map[i].iflag;
2c1d0305
CY		 3105
3106 return iflags;
3107}
3108
6fc93c4e 3109static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
2c1d0305 3110{
2c1d0305 3111 struct f2fs_inode_info *fi = F2FS_I(inode);
2c1d0305 3112
6fc93c4e 3113 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
2c1d0305 3114
7beb01f7 3115 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
6fc93c4e 3116 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
2c1d0305
CY		 3117}
3118
6fc93c4e 3119static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
c8e92757 3120{
6fc93c4e
EB		 3121 struct inode *inode = file_inode(filp);
3122 struct fsxattr fa;
c8e92757 3123
6fc93c4e 3124 f2fs_fill_fsxattr(inode, &fa);
c8e92757 3125
6fc93c4e
EB		 3126 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
3127 return -EFAULT;
c8e92757
WS		 3128 return 0;
3129}
3130
2c1d0305
CY		 3131static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
3132{
3133 struct inode *inode = file_inode(filp);
6fc93c4e 3134 struct fsxattr fa, old_fa;
36098557 3135 u32 iflags;
2c1d0305
CY		 3136 int err;
3137
3138 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
3139 return -EFAULT;
3140
3141 /* Make sure caller has proper permission */
3142 if (!inode_owner_or_capable(inode))
3143 return -EACCES;
3144
36098557 3145 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
2c1d0305
CY		 3146 return -EOPNOTSUPP;
3147
36098557
EB		 3148 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
3149 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
2c1d0305
CY		 3150 return -EOPNOTSUPP;
3151
3152 err = mnt_want_write_file(filp);
3153 if (err)
3154 return err;
3155
3156 inode_lock(inode);
6fc93c4e
EB		 3157
3158 f2fs_fill_fsxattr(inode, &old_fa);
3159 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
c8e92757
WS		 3160 if (err)
3161 goto out;
6fc93c4e 3162
36098557
EB		 3163 err = f2fs_setflags_common(inode, iflags,
3164 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
2c1d0305 3165 if (err)
c8e92757 3166 goto out;
2c1d0305
CY		 3167
3168 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
c8e92757
WS		 3169out:
3170 inode_unlock(inode);
3171 mnt_drop_write_file(filp);
3172 return err;
2c1d0305 3173}
e066b83c 3174
1ad71a27
JK		 3175int f2fs_pin_file_control(struct inode *inode, bool inc)
3176{
3177 struct f2fs_inode_info *fi = F2FS_I(inode);
3178 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3179
3180 /* Use i_gc_failures for normal file as a risk signal. */
3181 if (inc)
2ef79ecb
CY		 3182 f2fs_i_gc_failures_write(inode,
3183 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 3184
2ef79ecb 3185 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
dcbb4c10
JP		 3186 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3187 __func__, inode->i_ino,
3188 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 3189 clear_inode_flag(inode, FI_PIN_FILE);
3190 return -EAGAIN;
3191 }
3192 return 0;
3193}
3194
3195static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3196{
3197 struct inode *inode = file_inode(filp);
3198 __u32 pin;
3199 int ret = 0;
3200
1ad71a27
JK		 3201 if (get_user(pin, (__u32 __user *)arg))
3202 return -EFAULT;
3203
3204 if (!S_ISREG(inode->i_mode))
3205 return -EINVAL;
3206
3207 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3208 return -EROFS;
3209
3210 ret = mnt_want_write_file(filp);
3211 if (ret)
3212 return ret;
3213
3214 inode_lock(inode);
3215
4d57b86d 3216 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 3217 ret = -EINVAL;
3218 goto out;
3219 }
3220
1ad71a27
JK		 3221 if (!pin) {
3222 clear_inode_flag(inode, FI_PIN_FILE);
30933364 3223 f2fs_i_gc_failures_write(inode, 0);
1ad71a27
JK		 3224 goto done;
3225 }
3226
3227 if (f2fs_pin_file_control(inode, false)) {
3228 ret = -EAGAIN;
3229 goto out;
3230 }
4c8ff709 3231
1ad71a27
JK		 3232 ret = f2fs_convert_inline_inode(inode);
3233 if (ret)
3234 goto out;
3235
4c8ff709
CY		 3236 if (f2fs_disable_compressed_file(inode)) {
3237 ret = -EOPNOTSUPP;
3238 goto out;
3239 }
3240
1ad71a27 3241 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 3242 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3243done:
3244 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3245out:
3246 inode_unlock(inode);
3247 mnt_drop_write_file(filp);
3248 return ret;
3249}
3250
3251static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3252{
3253 struct inode *inode = file_inode(filp);
3254 __u32 pin = 0;
3255
3256 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 3257 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3258 return put_user(pin, (u32 __user *)arg);
3259}
3260
c4020b2d
CY		 3261int f2fs_precache_extents(struct inode *inode)
3262{
3263 struct f2fs_inode_info *fi = F2FS_I(inode);
3264 struct f2fs_map_blocks map;
3265 pgoff_t m_next_extent;
3266 loff_t end;
3267 int err;
3268
3269 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3270 return -EOPNOTSUPP;
3271
3272 map.m_lblk = 0;
3273 map.m_next_pgofs = NULL;
3274 map.m_next_extent = &m_next_extent;
3275 map.m_seg_type = NO_CHECK_TYPE;
f4f0b677 3276 map.m_may_create = false;
c4020b2d
CY		 3277 end = F2FS_I_SB(inode)->max_file_blocks;
3278
3279 while (map.m_lblk < end) {
3280 map.m_len = end - map.m_lblk;
3281
b2532c69 3282 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 3283 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 3284 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 3285 if (err)
3286 return err;
3287
3288 map.m_lblk = m_next_extent;
3289 }
3290
3291 return err;
3292}
3293
3294static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3295{
3296 return f2fs_precache_extents(file_inode(filp));
3297}
3298
04f0b2ea
QS		 3299static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3300{
3301 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3302 __u64 block_count;
3303 int ret;
3304
3305 if (!capable(CAP_SYS_ADMIN))
3306 return -EPERM;
3307
3308 if (f2fs_readonly(sbi->sb))
3309 return -EROFS;
3310
3311 if (copy_from_user(&block_count, (void __user *)arg,
3312 sizeof(block_count)))
3313 return -EFAULT;
3314
3315 ret = f2fs_resize_fs(sbi, block_count);
3316
3317 return ret;
3318}
3319
95ae251f
EB		 3320static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3321{
3322 struct inode *inode = file_inode(filp);
3323
3324 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3325
3326 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3327 f2fs_warn(F2FS_I_SB(inode),
3328 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3329 inode->i_ino);
3330 return -EOPNOTSUPP;
3331 }
3332
3333 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3334}
3335
3336static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3337{
3338 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3339 return -EOPNOTSUPP;
3340
3341 return fsverity_ioctl_measure(filp, (void __user *)arg);
3342}
3343
4507847c
CY		 3344static int f2fs_get_volume_name(struct file *filp, unsigned long arg)
3345{
3346 struct inode *inode = file_inode(filp);
3347 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3348 char *vbuf;
3349 int count;
3350 int err = 0;
3351
3352 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3353 if (!vbuf)
3354 return -ENOMEM;
3355
3356 down_read(&sbi->sb_lock);
3357 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3358 ARRAY_SIZE(sbi->raw_super->volume_name),
3359 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3360 up_read(&sbi->sb_lock);
3361
3362 if (copy_to_user((char __user *)arg, vbuf,
3363 min(FSLABEL_MAX, count)))
3364 err = -EFAULT;
3365
3366 kvfree(vbuf);
3367 return err;
3368}
3369
3370static int f2fs_set_volume_name(struct file *filp, unsigned long arg)
3371{
3372 struct inode *inode = file_inode(filp);
3373 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3374 char *vbuf;
3375 int err = 0;
3376
3377 if (!capable(CAP_SYS_ADMIN))
3378 return -EPERM;
3379
3380 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3381 if (IS_ERR(vbuf))
3382 return PTR_ERR(vbuf);
3383
3384 err = mnt_want_write_file(filp);
3385 if (err)
3386 goto out;
3387
3388 down_write(&sbi->sb_lock);
3389
3390 memset(sbi->raw_super->volume_name, 0,
3391 sizeof(sbi->raw_super->volume_name));
3392 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3393 sbi->raw_super->volume_name,
3394 ARRAY_SIZE(sbi->raw_super->volume_name));
3395
3396 err = f2fs_commit_super(sbi, false);
3397
3398 up_write(&sbi->sb_lock);
3399
3400 mnt_drop_write_file(filp);
3401out:
3402 kfree(vbuf);
3403 return err;
3404}
3405
52656e6c
JK		 3406long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3407{
1f227a3e
JK		 3408 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
3409 return -EIO;
00e09c0b
CY		 3410 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
3411 return -ENOSPC;
1f227a3e 3412
52656e6c
JK		 3413 switch (cmd) {
3414 case F2FS_IOC_GETFLAGS:
3415 return f2fs_ioc_getflags(filp, arg);
3416 case F2FS_IOC_SETFLAGS:
3417 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 3418 case F2FS_IOC_GETVERSION:
3419 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 3420 case F2FS_IOC_START_ATOMIC_WRITE:
3421 return f2fs_ioc_start_atomic_write(filp);
3422 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3423 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 3424 case F2FS_IOC_START_VOLATILE_WRITE:
3425 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 3426 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3427 return f2fs_ioc_release_volatile_write(filp);
3428 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3429 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 3430 case F2FS_IOC_SHUTDOWN:
3431 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 3432 case FITRIM:
3433 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 3434 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3435 return f2fs_ioc_set_encryption_policy(filp, arg);
3436 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3437 return f2fs_ioc_get_encryption_policy(filp, arg);
3438 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3439 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
8ce589c7
EB		 3440 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3441 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
3442 case FS_IOC_ADD_ENCRYPTION_KEY:
3443 return f2fs_ioc_add_encryption_key(filp, arg);
3444 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3445 return f2fs_ioc_remove_encryption_key(filp, arg);
3446 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3447 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
3448 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3449 return f2fs_ioc_get_encryption_key_status(filp, arg);
c1c1b583
CY		 3450 case F2FS_IOC_GARBAGE_COLLECT:
3451 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 3452 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3453 return f2fs_ioc_gc_range(filp, arg);
456b88e4 3454 case F2FS_IOC_WRITE_CHECKPOINT:
059c0648 3455 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 3456 case F2FS_IOC_DEFRAGMENT:
3457 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 3458 case F2FS_IOC_MOVE_RANGE:
3459 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 3460 case F2FS_IOC_FLUSH_DEVICE:
3461 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 3462 case F2FS_IOC_GET_FEATURES:
3463 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 3464 case F2FS_IOC_FSGETXATTR:
3465 return f2fs_ioc_fsgetxattr(filp, arg);
3466 case F2FS_IOC_FSSETXATTR:
3467 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 3468 case F2FS_IOC_GET_PIN_FILE:
3469 return f2fs_ioc_get_pin_file(filp, arg);
3470 case F2FS_IOC_SET_PIN_FILE:
3471 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 3472 case F2FS_IOC_PRECACHE_EXTENTS:
3473 return f2fs_ioc_precache_extents(filp, arg);
04f0b2ea
QS		 3474 case F2FS_IOC_RESIZE_FS:
3475 return f2fs_ioc_resize_fs(filp, arg);
95ae251f
EB		 3476 case FS_IOC_ENABLE_VERITY:
3477 return f2fs_ioc_enable_verity(filp, arg);
3478 case FS_IOC_MEASURE_VERITY:
3479 return f2fs_ioc_measure_verity(filp, arg);
4507847c
CY		 3480 case F2FS_IOC_GET_VOLUME_NAME:
3481 return f2fs_get_volume_name(filp, arg);
3482 case F2FS_IOC_SET_VOLUME_NAME:
3483 return f2fs_set_volume_name(filp, arg);
fbfa2cc5
JK		 3484 default:
3485 return -ENOTTY;
3486 }
3487}
3488
4c8ff709
CY		 3489static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
3490{
3491 struct file *file = iocb->ki_filp;
3492 struct inode *inode = file_inode(file);
3493
3494 if (!f2fs_is_compress_backend_ready(inode))
3495 return -EOPNOTSUPP;
3496
3497 return generic_file_read_iter(iocb, iter);
3498}
3499
fcc85a4d
JK		 3500static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
3501{
b439b103
JK		 3502 struct file *file = iocb->ki_filp;
3503 struct inode *inode = file_inode(file);
3504 ssize_t ret;
fcc85a4d 3505
126ce721
CY		 3506 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
3507 ret = -EIO;
3508 goto out;
3509 }
1f227a3e 3510
4c8ff709
CY		 3511 if (!f2fs_is_compress_backend_ready(inode))
3512 return -EOPNOTSUPP;
3513
cb8434f1
GR		 3514 if (iocb->ki_flags & IOCB_NOWAIT) {
3515 if (!inode_trylock(inode)) {
126ce721
CY		 3516 ret = -EAGAIN;
3517 goto out;
3518 }
cb8434f1 3519 } else {
b91050a8
HL		 3520 inode_lock(inode);
3521 }
3522
b439b103
JK		 3523 ret = generic_write_checks(iocb, from);
3524 if (ret > 0) {
dc7a10dd
JK		 3525 bool preallocated = false;
3526 size_t target_size = 0;
dc91de78 3527 int err;
a7de6086 3528
dc91de78
JK		 3529 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
3530 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 3531
d5d5f0c0
CX		 3532 if ((iocb->ki_flags & IOCB_NOWAIT)) {
3533 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
b91050a8 3534 iov_iter_count(from)) ||
d5d5f0c0
CX		 3535 f2fs_has_inline_data(inode) ||
3536 f2fs_force_buffered_io(inode, iocb, from)) {
3537 clear_inode_flag(inode, FI_NO_PREALLOC);
3538 inode_unlock(inode);
3539 ret = -EAGAIN;
3540 goto out;
3541 }
47501f87
JK		 3542 goto write;
3543 }
dc7a10dd 3544
47501f87
JK		 3545 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
3546 goto write;
3547
3548 if (iocb->ki_flags & IOCB_DIRECT) {
3549 /*
3550 * Convert inline data for Direct I/O before entering
3551 * f2fs_direct_IO().
3552 */
3553 err = f2fs_convert_inline_inode(inode);
3554 if (err)
3555 goto out_err;
3556 /*
3557 * If force_buffere_io() is true, we have to allocate
3558 * blocks all the time, since f2fs_direct_IO will fall
3559 * back to buffered IO.
3560 */
3561 if (!f2fs_force_buffered_io(inode, iocb, from) &&
3562 allow_outplace_dio(inode, iocb, from))
3563 goto write;
3564 }
3565 preallocated = true;
3566 target_size = iocb->ki_pos + iov_iter_count(from);
3567
3568 err = f2fs_preallocate_blocks(iocb, from);
3569 if (err) {
3570out_err:
3571 clear_inode_flag(inode, FI_NO_PREALLOC);
3572 inode_unlock(inode);
3573 ret = err;
3574 goto out;
9dfa1baf 3575 }
47501f87 3576write:
a7de6086 3577 ret = __generic_file_write_iter(iocb, from);
dc91de78 3578 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 3579
dc7a10dd
JK		 3580 /* if we couldn't write data, we should deallocate blocks. */
3581 if (preallocated && i_size_read(inode) < target_size)
3582 f2fs_truncate(inode);
3583
b0af6d49
CY		 3584 if (ret > 0)
3585 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 3586 }
3587 inode_unlock(inode);
126ce721
CY		 3588out:
3589 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
3590 iov_iter_count(from), ret);
e2592217
CH		 3591 if (ret > 0)
3592 ret = generic_write_sync(iocb, ret);
b439b103 3593 return ret;
fcc85a4d
JK		 3594}
3595
e9750824
NJ		 3596#ifdef CONFIG_COMPAT
3597long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3598{
3599 switch (cmd) {
3600 case F2FS_IOC32_GETFLAGS:
3601 cmd = F2FS_IOC_GETFLAGS;
3602 break;
3603 case F2FS_IOC32_SETFLAGS:
3604 cmd = F2FS_IOC_SETFLAGS;
3605 break;
04ef4b62
CY		 3606 case F2FS_IOC32_GETVERSION:
3607 cmd = F2FS_IOC_GETVERSION;
3608 break;
3609 case F2FS_IOC_START_ATOMIC_WRITE:
3610 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3611 case F2FS_IOC_START_VOLATILE_WRITE:
3612 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3613 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3614 case F2FS_IOC_SHUTDOWN:
314999dc 3615 case FITRIM:
04ef4b62
CY		 3616 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3617 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3618 case F2FS_IOC_GET_ENCRYPTION_POLICY:
8ce589c7
EB		 3619 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3620 case FS_IOC_ADD_ENCRYPTION_KEY:
3621 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3622 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3623 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
04ef4b62 3624 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 3625 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 3626 case F2FS_IOC_WRITE_CHECKPOINT:
3627 case F2FS_IOC_DEFRAGMENT:
4dd6f977 3628 case F2FS_IOC_MOVE_RANGE:
e066b83c 3629 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 3630 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 3631 case F2FS_IOC_FSGETXATTR:
3632 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 3633 case F2FS_IOC_GET_PIN_FILE:
3634 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 3635 case F2FS_IOC_PRECACHE_EXTENTS:
04f0b2ea 3636 case F2FS_IOC_RESIZE_FS:
95ae251f
EB		 3637 case FS_IOC_ENABLE_VERITY:
3638 case FS_IOC_MEASURE_VERITY:
4507847c
CY		 3639 case F2FS_IOC_GET_VOLUME_NAME:
3640 case F2FS_IOC_SET_VOLUME_NAME:
4dd6f977 3641 break;
e9750824
NJ		 3642 default:
3643 return -ENOIOCTLCMD;
3644 }
3645 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3646}
3647#endif
3648
fbfa2cc5 3649const struct file_operations f2fs_file_operations = {
267378d4 3650 .llseek = f2fs_llseek,
4c8ff709 3651 .read_iter = f2fs_file_read_iter,
fcc85a4d
JK		 3652 .write_iter = f2fs_file_write_iter,
3653 .open = f2fs_file_open,
12662234 3654 .release = f2fs_release_file,
fbfa2cc5 3655 .mmap = f2fs_file_mmap,
7a10f017 3656 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3657 .fsync = f2fs_sync_file,
3658 .fallocate = f2fs_fallocate,
3659 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3660#ifdef CONFIG_COMPAT
3661 .compat_ioctl = f2fs_compat_ioctl,
3662#endif
fbfa2cc5 3663 .splice_read = generic_file_splice_read,
8d020765 3664 .splice_write = iter_file_splice_write,
fbfa2cc5 3665};
Linux 6.x block layer and io_uring tree(s)