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f2fs: introduce sb_lock to make encrypt pwsalt update exclusive
[linux-block.git] / fs / f2fs / file.c
CommitLineData
0a8165d7 1/*
fbfa2cc5
JK		 2 * fs/f2fs/file.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/stat.h>
14#include <linux/buffer_head.h>
15#include <linux/writeback.h>
ae51fb31 16#include <linux/blkdev.h>
fbfa2cc5
JK		 17#include <linux/falloc.h>
18#include <linux/types.h>
e9750824 19#include <linux/compat.h>
fbfa2cc5
JK		 20#include <linux/uaccess.h>
21#include <linux/mount.h>
7f7670fe 22#include <linux/pagevec.h>
dc91de78 23#include <linux/uio.h>
8da4b8c4 24#include <linux/uuid.h>
4dd6f977 25#include <linux/file.h>
fbfa2cc5
JK		 26
27#include "f2fs.h"
28#include "node.h"
29#include "segment.h"
30#include "xattr.h"
31#include "acl.h"
c1c1b583 32#include "gc.h"
db9f7c1a 33#include "trace.h"
a2a4a7e4 34#include <trace/events/f2fs.h>
fbfa2cc5 35
5a3a2d83
QS		 36static int f2fs_filemap_fault(struct vm_fault *vmf)
37{
38 struct inode *inode = file_inode(vmf->vma->vm_file);
39 int err;
40
41 down_read(&F2FS_I(inode)->i_mmap_sem);
42 err = filemap_fault(vmf);
43 up_read(&F2FS_I(inode)->i_mmap_sem);
44
45 return err;
46}
47
11bac800 48static int f2fs_vm_page_mkwrite(struct vm_fault *vmf)
fbfa2cc5
JK		 49{
50 struct page *page = vmf->page;
11bac800 51 struct inode *inode = file_inode(vmf->vma->vm_file);
4081363f 52 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5 53 struct dnode_of_data dn;
e479556b 54 int err;
fbfa2cc5 55
1f227a3e
JK		 56 if (unlikely(f2fs_cp_error(sbi))) {
57 err = -EIO;
58 goto err;
59 }
60
fbfa2cc5 61 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 62
63 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 64
fbfa2cc5 65 /* block allocation */
e479556b 66 f2fs_lock_op(sbi);
b3d208f9 67 set_new_dnode(&dn, inode, NULL, NULL, 0);
b600965c 68 err = f2fs_reserve_block(&dn, page->index);
9ba69cf9
JK		 69 if (err) {
70 f2fs_unlock_op(sbi);
b600965c 71 goto out;
9ba69cf9
JK		 72 }
73 f2fs_put_dnode(&dn);
74 f2fs_unlock_op(sbi);
fbfa2cc5 75
2c4db1a6 76 f2fs_balance_fs(sbi, dn.node_changed);
2a340760 77
11bac800 78 file_update_time(vmf->vma->vm_file);
5a3a2d83 79 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 80 lock_page(page);
6bacf52f 81 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 82 page_offset(page) > i_size_read(inode) ||
6bacf52f 83 !PageUptodate(page))) {
fbfa2cc5
JK		 84 unlock_page(page);
85 err = -EFAULT;
5a3a2d83 86 goto out_sem;
fbfa2cc5
JK		 87 }
88
89 /*
90 * check to see if the page is mapped already (no holes)
91 */
92 if (PageMappedToDisk(page))
9851e6e1 93 goto mapped;
fbfa2cc5
JK		 94
95 /* page is wholly or partially inside EOF */
09cbfeaf 96 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 97 i_size_read(inode)) {
fbfa2cc5 98 unsigned offset;
09cbfeaf
KS		 99 offset = i_size_read(inode) & ~PAGE_MASK;
100 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 101 }
102 set_page_dirty(page);
237c0790
JK		 103 if (!PageUptodate(page))
104 SetPageUptodate(page);
fbfa2cc5 105
b0af6d49
CY		 106 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
107
e943a10d 108 trace_f2fs_vm_page_mkwrite(page, DATA);
9851e6e1
NJ		 109mapped:
110 /* fill the page */
fec1d657 111 f2fs_wait_on_page_writeback(page, DATA, false);
08b39fbd
CY		 112
113 /* wait for GCed encrypted page writeback */
1958593e 114 if (f2fs_encrypted_file(inode))
d4c759ee 115 f2fs_wait_on_block_writeback(sbi, dn.data_blkaddr);
08b39fbd 116
5a3a2d83
QS		 117out_sem:
118 up_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 119out:
120 sb_end_pagefault(inode->i_sb);
d0239e1b 121 f2fs_update_time(sbi, REQ_TIME);
1f227a3e 122err:
fbfa2cc5
JK		 123 return block_page_mkwrite_return(err);
124}
125
126static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 127 .fault = f2fs_filemap_fault,
f1820361 128 .map_pages = filemap_map_pages,
692bb55d 129 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 130};
131
354a3399
JK		 132static int get_parent_ino(struct inode *inode, nid_t *pino)
133{
134 struct dentry *dentry;
135
136 inode = igrab(inode);
137 dentry = d_find_any_alias(inode);
138 iput(inode);
139 if (!dentry)
140 return 0;
141
f0947e5c
JK		 142 *pino = parent_ino(dentry);
143 dput(dentry);
354a3399
JK		 144 return 1;
145}
146
a5fd5050 147static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 148{
4081363f 149 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 150 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 151
a5fd5050
CY		 152 if (!S_ISREG(inode->i_mode))
153 cp_reason = CP_NON_REGULAR;
154 else if (inode->i_nlink != 1)
155 cp_reason = CP_HARDLINK;
bbf156f7 156 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 157 cp_reason = CP_SB_NEED_CP;
9d1589ef 158 else if (file_wrong_pino(inode))
a5fd5050 159 cp_reason = CP_WRONG_PINO;
9d1589ef 160 else if (!space_for_roll_forward(sbi))
a5fd5050 161 cp_reason = CP_NO_SPC_ROLL;
9d1589ef 162 else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 163 cp_reason = CP_NODE_NEED_CP;
d5053a34 164 else if (test_opt(sbi, FASTBOOT))
a5fd5050 165 cp_reason = CP_FASTBOOT_MODE;
a344b9fd 166 else if (sbi->active_logs == 2)
a5fd5050 167 cp_reason = CP_SPEC_LOG_NUM;
0a007b97
JK		 168 else if (need_dentry_mark(sbi, inode->i_ino) &&
169 exist_written_data(sbi, F2FS_I(inode)->i_pino, TRANS_DIR_INO))
170 cp_reason = CP_RECOVER_DIR;
9d1589ef 171
a5fd5050 172 return cp_reason;
9d1589ef
CY		 173}
174
9c7bb702
CL		 175static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
176{
177 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
178 bool ret = false;
179 /* But we need to avoid that there are some inode updates */
180 if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino))
181 ret = true;
182 f2fs_put_page(i, 0);
183 return ret;
184}
185
51455b19
CL		 186static void try_to_fix_pino(struct inode *inode)
187{
188 struct f2fs_inode_info *fi = F2FS_I(inode);
189 nid_t pino;
190
191 down_write(&fi->i_sem);
51455b19
CL		 192 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
193 get_parent_ino(inode, &pino)) {
205b9822 194 f2fs_i_pino_write(inode, pino);
51455b19 195 file_got_pino(inode);
51455b19 196 }
ee6d182f 197 up_write(&fi->i_sem);
51455b19
CL		 198}
199
608514de
JK		 200static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
201 int datasync, bool atomic)
fbfa2cc5
JK		 202{
203 struct inode *inode = file->f_mapping->host;
4081363f 204 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 205 nid_t ino = inode->i_ino;
fbfa2cc5 206 int ret = 0;
a5fd5050 207 enum cp_reason_type cp_reason = 0;
fbfa2cc5 208 struct writeback_control wbc = {
c81bf1c8 209 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 210 .nr_to_write = LONG_MAX,
211 .for_reclaim = 0,
212 };
213
6bacf52f 214 if (unlikely(f2fs_readonly(inode->i_sb)))
1fa95b0b
NJ		 215 return 0;
216
a2a4a7e4 217 trace_f2fs_sync_file_enter(inode);
ea1aa12c
JK		 218
219 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 220 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 221 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 222 ret = file_write_and_wait_range(file, start, end);
91942321 223 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 224
a2a4a7e4 225 if (ret) {
a5fd5050 226 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 227 return ret;
a2a4a7e4 228 }
fbfa2cc5 229
9c7bb702 230 /* if the inode is dirty, let's recover all the time */
281518c6 231 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 232 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 233 goto go_write;
234 }
235
6d99ba41
JK		 236 /*
237 * if there is no written data, don't waste time to write recovery info.
238 */
91942321 239 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
2403c155 240 !exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 241
9c7bb702
CL		 242 /* it may call write_inode just prior to fsync */
243 if (need_inode_page_update(sbi, ino))
19c9c466 244 goto go_write;
19c9c466 245
91942321 246 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
2403c155 247 exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 248 goto flush_out;
249 goto out;
250 }
19c9c466 251go_write:
e5d2385e
JK		 252 /*
253 * Both of fdatasync() and fsync() are able to be recovered from
254 * sudden-power-off.
255 */
91942321 256 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 257 cp_reason = need_do_checkpoint(inode);
91942321 258 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 259
a5fd5050 260 if (cp_reason) {
fbfa2cc5
JK		 261 /* all the dirty node pages should be flushed for POR */
262 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 263
51455b19
CL		 264 /*
265 * We've secured consistency through sync_fs. Following pino
266 * will be used only for fsynced inodes after checkpoint.
267 */
268 try_to_fix_pino(inode);
91942321
JK		 269 clear_inode_flag(inode, FI_APPEND_WRITE);
270 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 271 goto out;
272 }
88bd02c9 273sync_nodes:
26de9b11 274 ret = fsync_node_pages(sbi, inode, &wbc, atomic);
c267ec15
JK		 275 if (ret)
276 goto out;
51455b19 277
871f599f 278 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 279 if (unlikely(f2fs_cp_error(sbi))) {
280 ret = -EIO;
871f599f 281 goto out;
6d5a1495 282 }
871f599f 283
51455b19 284 if (need_inode_block_update(sbi, ino)) {
7c45729a 285 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 286 f2fs_write_inode(inode, NULL);
287 goto sync_nodes;
fbfa2cc5 288 }
51455b19 289
b6a245eb
JK		 290 /*
291 * If it's atomic_write, it's just fine to keep write ordering. So
292 * here we don't need to wait for node write completion, since we use
293 * node chain which serializes node blocks. If one of node writes are
294 * reordered, we can see simply broken chain, resulting in stopping
295 * roll-forward recovery. It means we'll recover all or none node blocks
296 * given fsync mark.
297 */
298 if (!atomic) {
299 ret = wait_on_node_pages_writeback(sbi, ino);
300 if (ret)
301 goto out;
302 }
51455b19
CL		 303
304 /* once recovery info is written, don't need to tack this */
a49324f1 305 remove_ino_entry(sbi, ino, APPEND_INO);
91942321 306 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 307flush_out:
e7c75ab0 308 if (!atomic)
39d787be 309 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f
CY		 310 if (!ret) {
311 remove_ino_entry(sbi, ino, UPDATE_INO);
312 clear_inode_flag(inode, FI_UPDATE_WRITE);
39d787be 313 remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 314 }
d0239e1b 315 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 316out:
a5fd5050 317 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 318 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 319 return ret;
320}
321
608514de
JK		 322int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
323{
1f227a3e
JK		 324 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
325 return -EIO;
608514de
JK		 326 return f2fs_do_sync_file(file, start, end, datasync, false);
327}
328
7f7670fe
JK		 329static pgoff_t __get_first_dirty_index(struct address_space *mapping,
330 pgoff_t pgofs, int whence)
331{
8faab642 332 struct page *page;
7f7670fe
JK		 333 int nr_pages;
334
335 if (whence != SEEK_DATA)
336 return 0;
337
338 /* find first dirty page index */
8faab642
JK		 339 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
340 1, &page);
341 if (!nr_pages)
342 return ULONG_MAX;
343 pgofs = page->index;
344 put_page(page);
7f7670fe
JK		 345 return pgofs;
346}
347
348static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
349 int whence)
350{
351 switch (whence) {
352 case SEEK_DATA:
353 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
354 (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR))
355 return true;
356 break;
357 case SEEK_HOLE:
358 if (blkaddr == NULL_ADDR)
359 return true;
360 break;
361 }
362 return false;
363}
364
267378d4
CY		 365static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
366{
367 struct inode *inode = file->f_mapping->host;
368 loff_t maxbytes = inode->i_sb->s_maxbytes;
369 struct dnode_of_data dn;
7f7670fe
JK		 370 pgoff_t pgofs, end_offset, dirty;
371 loff_t data_ofs = offset;
372 loff_t isize;
267378d4
CY		 373 int err = 0;
374
5955102c 375 inode_lock(inode);
267378d4
CY		 376
377 isize = i_size_read(inode);
378 if (offset >= isize)
379 goto fail;
380
381 /* handle inline data case */
622f28ae 382 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 383 if (whence == SEEK_HOLE)
384 data_ofs = isize;
385 goto found;
386 }
387
09cbfeaf 388 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 389
7f7670fe
JK		 390 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
391
09cbfeaf 392 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 393 set_new_dnode(&dn, inode, NULL, NULL, 0);
ac6f1999 394 err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 395 if (err && err != -ENOENT) {
396 goto fail;
397 } else if (err == -ENOENT) {
e1c42045 398 /* direct node does not exists */
267378d4 399 if (whence == SEEK_DATA) {
3cf45747 400 pgofs = get_next_page_offset(&dn, pgofs);
267378d4
CY		 401 continue;
402 } else {
403 goto found;
404 }
405 }
406
81ca7350 407 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 408
409 /* find data/hole in dnode block */
410 for (; dn.ofs_in_node < end_offset;
411 dn.ofs_in_node++, pgofs++,
09cbfeaf 412 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 413 block_t blkaddr;
7a2af766
CY		 414 blkaddr = datablock_addr(dn.inode,
415 dn.node_page, dn.ofs_in_node);
267378d4 416
7f7670fe 417 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
267378d4
CY		 418 f2fs_put_dnode(&dn);
419 goto found;
420 }
421 }
422 f2fs_put_dnode(&dn);
423 }
424
425 if (whence == SEEK_DATA)
426 goto fail;
267378d4 427found:
fe369bc8
JK		 428 if (whence == SEEK_HOLE && data_ofs > isize)
429 data_ofs = isize;
5955102c 430 inode_unlock(inode);
267378d4
CY		 431 return vfs_setpos(file, data_ofs, maxbytes);
432fail:
5955102c 433 inode_unlock(inode);
267378d4
CY		 434 return -ENXIO;
435}
436
437static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
438{
439 struct inode *inode = file->f_mapping->host;
440 loff_t maxbytes = inode->i_sb->s_maxbytes;
441
442 switch (whence) {
443 case SEEK_SET:
444 case SEEK_CUR:
445 case SEEK_END:
446 return generic_file_llseek_size(file, offset, whence,
447 maxbytes, i_size_read(inode));
448 case SEEK_DATA:
449 case SEEK_HOLE:
0b4c5afd
JK		 450 if (offset < 0)
451 return -ENXIO;
267378d4
CY		 452 return f2fs_seek_block(file, offset, whence);
453 }
454
455 return -EINVAL;
456}
457
fbfa2cc5
JK		 458static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
459{
b3d208f9 460 struct inode *inode = file_inode(file);
b9d777b8 461 int err;
b3d208f9 462
1f227a3e
JK		 463 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
464 return -EIO;
465
b3d208f9 466 /* we don't need to use inline_data strictly */
b9d777b8
JK		 467 err = f2fs_convert_inline_inode(inode);
468 if (err)
469 return err;
b3d208f9 470
fbfa2cc5
JK		 471 file_accessed(file);
472 vma->vm_ops = &f2fs_file_vm_ops;
473 return 0;
474}
475
fcc85a4d
JK		 476static int f2fs_file_open(struct inode *inode, struct file *filp)
477{
2e168c82 478 int err = fscrypt_file_open(inode, filp);
fcc85a4d 479
2e168c82
EB		 480 if (err)
481 return err;
0abd675e 482 return dquot_file_open(inode, filp);
fcc85a4d
JK		 483}
484
f652e9d9 485void truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 486{
4081363f 487 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 488 struct f2fs_node *raw_node;
19b2c30d 489 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 490 __le32 *addr;
7a2af766
CY		 491 int base = 0;
492
493 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
494 base = get_extra_isize(dn->inode);
fbfa2cc5 495
45590710 496 raw_node = F2FS_NODE(dn->node_page);
7a2af766 497 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 498
6c311ec6 499 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
fbfa2cc5
JK		 500 block_t blkaddr = le32_to_cpu(*addr);
501 if (blkaddr == NULL_ADDR)
502 continue;
503
e1509cf2 504 dn->data_blkaddr = NULL_ADDR;
216a620a 505 set_data_blkaddr(dn);
fbfa2cc5 506 invalidate_blocks(sbi, blkaddr);
3c6c2beb 507 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 508 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
fbfa2cc5
JK		 509 nr_free++;
510 }
19b2c30d 511
fbfa2cc5 512 if (nr_free) {
19b2c30d
CY		 513 pgoff_t fofs;
514 /*
515 * once we invalidate valid blkaddr in range [ofs, ofs + count],
516 * we will invalidate all blkaddr in the whole range.
517 */
518 fofs = start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 519 dn->inode) + ofs;
19b2c30d 520 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 521 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 522 }
523 dn->ofs_in_node = ofs;
51dd6249 524
d0239e1b 525 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 526 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
527 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 528}
529
530void truncate_data_blocks(struct dnode_of_data *dn)
531{
532 truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
533}
534
0bfcfcca 535static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 536 bool cache_only)
fbfa2cc5 537{
09cbfeaf
KS		 538 unsigned offset = from & (PAGE_SIZE - 1);
539 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 540 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 541 struct page *page;
542
43f3eae1 543 if (!offset && !cache_only)
b3d208f9 544 return 0;
fbfa2cc5 545
43f3eae1 546 if (cache_only) {
34b5d5c2 547 page = find_lock_page(mapping, index);
43f3eae1
JK		 548 if (page && PageUptodate(page))
549 goto truncate_out;
550 f2fs_put_page(page, 1);
b3d208f9 551 return 0;
43f3eae1 552 }
fbfa2cc5 553
a56c7c6f 554 page = get_lock_data_page(inode, index, true);
43f3eae1 555 if (IS_ERR(page))
a78aaa2c 556 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 557truncate_out:
fec1d657 558 f2fs_wait_on_page_writeback(page, DATA, true);
09cbfeaf 559 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 560
561 /* An encrypted inode should have a key and truncate the last page. */
562 f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode));
563 if (!cache_only)
0bfcfcca 564 set_page_dirty(page);
fbfa2cc5 565 f2fs_put_page(page, 1);
b3d208f9 566 return 0;
fbfa2cc5
JK		 567}
568
764aa3e9 569int truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 570{
4081363f 571 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 572 unsigned int blocksize = inode->i_sb->s_blocksize;
573 struct dnode_of_data dn;
574 pgoff_t free_from;
9ffe0fb5 575 int count = 0, err = 0;
b3d208f9 576 struct page *ipage;
0bfcfcca 577 bool truncate_page = false;
fbfa2cc5 578
51dd6249
NJ		 579 trace_f2fs_truncate_blocks_enter(inode, from);
580
f7ef9b83 581 free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1);
fbfa2cc5 582
09210c97
CY		 583 if (free_from >= sbi->max_file_blocks)
584 goto free_partial;
585
764aa3e9
JK		 586 if (lock)
587 f2fs_lock_op(sbi);
9ffe0fb5 588
b3d208f9
JK		 589 ipage = get_node_page(sbi, inode->i_ino);
590 if (IS_ERR(ipage)) {
591 err = PTR_ERR(ipage);
592 goto out;
593 }
594
595 if (f2fs_has_inline_data(inode)) {
bd4667cb 596 truncate_inline_inode(inode, ipage, from);
b3d208f9 597 f2fs_put_page(ipage, 1);
0bfcfcca 598 truncate_page = true;
b3d208f9
JK		 599 goto out;
600 }
601
602 set_new_dnode(&dn, inode, ipage, NULL, 0);
79344efb 603 err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 604 if (err) {
605 if (err == -ENOENT)
606 goto free_next;
b3d208f9 607 goto out;
1ce86bf6
JK		 608 }
609
81ca7350 610 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 611
612 count -= dn.ofs_in_node;
9850cf4a 613 f2fs_bug_on(sbi, count < 0);
39936837 614
fbfa2cc5
JK		 615 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
616 truncate_data_blocks_range(&dn, count);
617 free_from += count;
618 }
619
620 f2fs_put_dnode(&dn);
621free_next:
622 err = truncate_inode_blocks(inode, free_from);
764d2c80
JK		 623out:
624 if (lock)
625 f2fs_unlock_op(sbi);
09210c97 626free_partial:
b3d208f9
JK		 627 /* lastly zero out the first data page */
628 if (!err)
0bfcfcca 629 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 630
51dd6249 631 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 632 return err;
633}
634
9a449e9c 635int f2fs_truncate(struct inode *inode)
fbfa2cc5 636{
b0154891
CY		 637 int err;
638
1f227a3e
JK		 639 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
640 return -EIO;
641
fbfa2cc5
JK		 642 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
643 S_ISLNK(inode->i_mode)))
b0154891 644 return 0;
fbfa2cc5 645
51dd6249
NJ		 646 trace_f2fs_truncate(inode);
647
14b44d23
JK		 648#ifdef CONFIG_F2FS_FAULT_INJECTION
649 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
650 f2fs_show_injection_info(FAULT_TRUNCATE);
651 return -EIO;
652 }
653#endif
92dffd01 654 /* we should check inline_data size */
b9d777b8 655 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 656 err = f2fs_convert_inline_inode(inode);
657 if (err)
658 return err;
92dffd01
JK		 659 }
660
9a449e9c 661 err = truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 662 if (err)
663 return err;
664
078cd827 665 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 666 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 667 return 0;
fbfa2cc5
JK		 668}
669
a528d35e 670int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 671 u32 request_mask, unsigned int query_flags)
fbfa2cc5 672{
a528d35e 673 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 674 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 675 struct f2fs_inode *ri;
1c6d8ee4
CY		 676 unsigned int flags;
677
1c1d35df
CY		 678 if (f2fs_has_extra_attr(inode) &&
679 f2fs_sb_has_inode_crtime(inode->i_sb) &&
680 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
681 stat->result_mask |= STATX_BTIME;
682 stat->btime.tv_sec = fi->i_crtime.tv_sec;
683 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
684 }
685
2c1d0305 686 flags = fi->i_flags & (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL);
1c6d8ee4
CY		 687 if (flags & FS_APPEND_FL)
688 stat->attributes |= STATX_ATTR_APPEND;
689 if (flags & FS_COMPR_FL)
690 stat->attributes |= STATX_ATTR_COMPRESSED;
691 if (f2fs_encrypted_inode(inode))
692 stat->attributes |= STATX_ATTR_ENCRYPTED;
693 if (flags & FS_IMMUTABLE_FL)
694 stat->attributes |= STATX_ATTR_IMMUTABLE;
695 if (flags & FS_NODUMP_FL)
696 stat->attributes |= STATX_ATTR_NODUMP;
697
698 stat->attributes_mask |= (STATX_ATTR_APPEND |
699 STATX_ATTR_COMPRESSED |
700 STATX_ATTR_ENCRYPTED |
701 STATX_ATTR_IMMUTABLE |
702 STATX_ATTR_NODUMP);
703
fbfa2cc5 704 generic_fillattr(inode, stat);
5b4267d1
JK		 705
706 /* we need to show initial sectors used for inline_data/dentries */
707 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
708 f2fs_has_inline_dentry(inode))
709 stat->blocks += (stat->size + 511) >> 9;
710
fbfa2cc5
JK		 711 return 0;
712}
713
714#ifdef CONFIG_F2FS_FS_POSIX_ACL
715static void __setattr_copy(struct inode *inode, const struct iattr *attr)
716{
fbfa2cc5
JK		 717 unsigned int ia_valid = attr->ia_valid;
718
719 if (ia_valid & ATTR_UID)
720 inode->i_uid = attr->ia_uid;
721 if (ia_valid & ATTR_GID)
722 inode->i_gid = attr->ia_gid;
723 if (ia_valid & ATTR_ATIME)
724 inode->i_atime = timespec_trunc(attr->ia_atime,
725 inode->i_sb->s_time_gran);
726 if (ia_valid & ATTR_MTIME)
727 inode->i_mtime = timespec_trunc(attr->ia_mtime,
728 inode->i_sb->s_time_gran);
729 if (ia_valid & ATTR_CTIME)
730 inode->i_ctime = timespec_trunc(attr->ia_ctime,
731 inode->i_sb->s_time_gran);
732 if (ia_valid & ATTR_MODE) {
733 umode_t mode = attr->ia_mode;
734
735 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
736 mode &= ~S_ISGID;
91942321 737 set_acl_inode(inode, mode);
fbfa2cc5
JK		 738 }
739}
740#else
741#define __setattr_copy setattr_copy
742#endif
743
744int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
745{
2b0143b5 746 struct inode *inode = d_inode(dentry);
fbfa2cc5 747 int err;
c0ed4405 748 bool size_changed = false;
fbfa2cc5 749
1f227a3e
JK		 750 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
751 return -EIO;
752
31051c85 753 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 754 if (err)
755 return err;
756
20bb2479
EB		 757 err = fscrypt_prepare_setattr(dentry, attr);
758 if (err)
759 return err;
760
0abd675e
CY		 761 if (is_quota_modification(inode, attr)) {
762 err = dquot_initialize(inode);
763 if (err)
764 return err;
765 }
766 if ((attr->ia_valid & ATTR_UID &&
767 !uid_eq(attr->ia_uid, inode->i_uid)) ||
768 (attr->ia_valid & ATTR_GID &&
769 !gid_eq(attr->ia_gid, inode->i_gid))) {
770 err = dquot_transfer(inode, attr);
771 if (err)
772 return err;
773 }
774
09db6a2e 775 if (attr->ia_valid & ATTR_SIZE) {
3c454145 776 if (attr->ia_size <= i_size_read(inode)) {
5a3a2d83 777 down_write(&F2FS_I(inode)->i_mmap_sem);
09db6a2e 778 truncate_setsize(inode, attr->ia_size);
9a449e9c 779 err = f2fs_truncate(inode);
5a3a2d83 780 up_write(&F2FS_I(inode)->i_mmap_sem);
b0154891
CY		 781 if (err)
782 return err;
09db6a2e
CY		 783 } else {
784 /*
3c454145
CY		 785 * do not trim all blocks after i_size if target size is
786 * larger than i_size.
09db6a2e 787 */
5a3a2d83 788 down_write(&F2FS_I(inode)->i_mmap_sem);
3c454145 789 truncate_setsize(inode, attr->ia_size);
5a3a2d83 790 up_write(&F2FS_I(inode)->i_mmap_sem);
0cab80ee
CY		 791
792 /* should convert inline inode here */
b9d777b8 793 if (!f2fs_may_inline_data(inode)) {
0cab80ee
CY		 794 err = f2fs_convert_inline_inode(inode);
795 if (err)
796 return err;
797 }
078cd827 798 inode->i_mtime = inode->i_ctime = current_time(inode);
09db6a2e 799 }
c0ed4405 800
a0d00fad
CY		 801 down_write(&F2FS_I(inode)->i_sem);
802 F2FS_I(inode)->last_disk_size = i_size_read(inode);
803 up_write(&F2FS_I(inode)->i_sem);
804
c0ed4405 805 size_changed = true;
fbfa2cc5
JK		 806 }
807
808 __setattr_copy(inode, attr);
809
810 if (attr->ia_valid & ATTR_MODE) {
a6dda0e6 811 err = posix_acl_chmod(inode, get_inode_mode(inode));
91942321
JK		 812 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
813 inode->i_mode = F2FS_I(inode)->i_acl_mode;
814 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 815 }
816 }
817
c0ed4405
YH		 818 /* file size may changed here */
819 f2fs_mark_inode_dirty_sync(inode, size_changed);
15d04354
JK		 820
821 /* inode change will produce dirty node pages flushed by checkpoint */
822 f2fs_balance_fs(F2FS_I_SB(inode), true);
823
fbfa2cc5
JK		 824 return err;
825}
826
827const struct inode_operations f2fs_file_inode_operations = {
828 .getattr = f2fs_getattr,
829 .setattr = f2fs_setattr,
830 .get_acl = f2fs_get_acl,
a6dda0e6 831 .set_acl = f2fs_set_acl,
fbfa2cc5 832#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 833 .listxattr = f2fs_listxattr,
fbfa2cc5 834#endif
9ab70134 835 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 836};
837
6394328a 838static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 839 loff_t start, loff_t len)
840{
4081363f 841 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 842 struct page *page;
843
844 if (!len)
6394328a 845 return 0;
fbfa2cc5 846
2c4db1a6 847 f2fs_balance_fs(sbi, true);
bd43df02 848
e479556b 849 f2fs_lock_op(sbi);
64aa7ed9 850 page = get_new_data_page(inode, NULL, index, false);
e479556b 851 f2fs_unlock_op(sbi);
fbfa2cc5 852
6394328a
CY		 853 if (IS_ERR(page))
854 return PTR_ERR(page);
855
fec1d657 856 f2fs_wait_on_page_writeback(page, DATA, true);
6394328a
CY		 857 zero_user(page, start, len);
858 set_page_dirty(page);
859 f2fs_put_page(page, 1);
860 return 0;
fbfa2cc5
JK		 861}
862
863int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
864{
fbfa2cc5
JK		 865 int err;
866
ea58711e 867 while (pg_start < pg_end) {
fbfa2cc5 868 struct dnode_of_data dn;
ea58711e 869 pgoff_t end_offset, count;
9eaeba70 870
fbfa2cc5 871 set_new_dnode(&dn, inode, NULL, NULL, 0);
ea58711e 872 err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 873 if (err) {
ea58711e 874 if (err == -ENOENT) {
48ab25f4 875 pg_start = get_next_page_offset(&dn, pg_start);
fbfa2cc5 876 continue;
ea58711e 877 }
fbfa2cc5
JK		 878 return err;
879 }
880
81ca7350 881 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 882 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
883
884 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
885
886 truncate_data_blocks_range(&dn, count);
fbfa2cc5 887 f2fs_put_dnode(&dn);
ea58711e
CY		 888
889 pg_start += count;
fbfa2cc5
JK		 890 }
891 return 0;
892}
893
a66c7b2f 894static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 895{
896 pgoff_t pg_start, pg_end;
897 loff_t off_start, off_end;
b9d777b8 898 int ret;
fbfa2cc5 899
b9d777b8
JK		 900 ret = f2fs_convert_inline_inode(inode);
901 if (ret)
902 return ret;
9ffe0fb5 903
09cbfeaf
KS		 904 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
905 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 906
09cbfeaf
KS		 907 off_start = offset & (PAGE_SIZE - 1);
908 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 909
910 if (pg_start == pg_end) {
6394328a 911 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 912 off_end - off_start);
6394328a
CY		 913 if (ret)
914 return ret;
fbfa2cc5 915 } else {
6394328a
CY		 916 if (off_start) {
917 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 918 PAGE_SIZE - off_start);
6394328a
CY		 919 if (ret)
920 return ret;
921 }
922 if (off_end) {
923 ret = fill_zero(inode, pg_end, 0, off_end);
924 if (ret)
925 return ret;
926 }
fbfa2cc5
JK		 927
928 if (pg_start < pg_end) {
929 struct address_space *mapping = inode->i_mapping;
930 loff_t blk_start, blk_end;
4081363f 931 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 932
2c4db1a6 933 f2fs_balance_fs(sbi, true);
fbfa2cc5 934
09cbfeaf
KS		 935 blk_start = (loff_t)pg_start << PAGE_SHIFT;
936 blk_end = (loff_t)pg_end << PAGE_SHIFT;
5a3a2d83 937 down_write(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 938 truncate_inode_pages_range(mapping, blk_start,
939 blk_end - 1);
39936837 940
e479556b 941 f2fs_lock_op(sbi);
fbfa2cc5 942 ret = truncate_hole(inode, pg_start, pg_end);
e479556b 943 f2fs_unlock_op(sbi);
5a3a2d83 944 up_write(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 945 }
946 }
947
fbfa2cc5
JK		 948 return ret;
949}
950
0a2aa8fb
JK		 951static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
952 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 953{
954 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
955 struct dnode_of_data dn;
0a2aa8fb 956 int ret, done, i;
ecbaa406 957
0a2aa8fb 958next_dnode:
6e2c64ad 959 set_new_dnode(&dn, inode, NULL, NULL, 0);
0a2aa8fb 960 ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 961 if (ret && ret != -ENOENT) {
962 return ret;
963 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 964 if (dn.max_level == 0)
965 return -ENOENT;
966 done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len);
967 blkaddr += done;
968 do_replace += done;
969 goto next;
970 }
971
972 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
973 dn.ofs_in_node, len);
974 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 975 *blkaddr = datablock_addr(dn.inode,
976 dn.node_page, dn.ofs_in_node);
0a2aa8fb
JK		 977 if (!is_checkpointed_data(sbi, *blkaddr)) {
978
979 if (test_opt(sbi, LFS)) {
980 f2fs_put_dnode(&dn);
981 return -ENOTSUPP;
982 }
983
6e2c64ad 984 /* do not invalidate this block address */
f28b3434 985 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 986 *do_replace = 1;
b4ace337 987 }
6e2c64ad 988 }
0a2aa8fb
JK		 989 f2fs_put_dnode(&dn);
990next:
991 len -= done;
992 off += done;
993 if (len)
994 goto next_dnode;
995 return 0;
996}
b4ace337 997
0a2aa8fb
JK		 998static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
999 int *do_replace, pgoff_t off, int len)
1000{
1001 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1002 struct dnode_of_data dn;
1003 int ret, i;
b4ace337 1004
0a2aa8fb
JK		 1005 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1006 if (*do_replace == 0)
1007 continue;
b4ace337 1008
0a2aa8fb
JK		 1009 set_new_dnode(&dn, inode, NULL, NULL, 0);
1010 ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1011 if (ret) {
1012 dec_valid_block_count(sbi, inode, 1);
1013 invalidate_blocks(sbi, *blkaddr);
1014 } else {
1015 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1016 }
0a2aa8fb
JK		 1017 f2fs_put_dnode(&dn);
1018 }
1019 return 0;
1020}
1021
1022static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1023 block_t *blkaddr, int *do_replace,
1024 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1025{
1026 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1027 pgoff_t i = 0;
1028 int ret;
36abef4e 1029
0a2aa8fb
JK		 1030 while (i < len) {
1031 if (blkaddr[i] == NULL_ADDR && !full) {
1032 i++;
1033 continue;
6e2c64ad 1034 }
b4ace337 1035
0a2aa8fb
JK		 1036 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1037 struct dnode_of_data dn;
1038 struct node_info ni;
1039 size_t new_size;
1040 pgoff_t ilen;
b4ace337 1041
0a2aa8fb
JK		 1042 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1043 ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1044 if (ret)
1045 return ret;
b4ace337 1046
0a2aa8fb
JK		 1047 get_node_info(sbi, dn.nid, &ni);
1048 ilen = min((pgoff_t)
1049 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1050 dn.ofs_in_node, len - i);
1051 do {
7a2af766
CY		 1052 dn.data_blkaddr = datablock_addr(dn.inode,
1053 dn.node_page, dn.ofs_in_node);
0a2aa8fb
JK		 1054 truncate_data_blocks_range(&dn, 1);
1055
1056 if (do_replace[i]) {
1057 f2fs_i_blocks_write(src_inode,
0abd675e 1058 1, false, false);
0a2aa8fb 1059 f2fs_i_blocks_write(dst_inode,
0abd675e 1060 1, true, false);
0a2aa8fb
JK		 1061 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1062 blkaddr[i], ni.version, true, false);
1063
1064 do_replace[i] = 0;
1065 }
1066 dn.ofs_in_node++;
1067 i++;
1068 new_size = (dst + i) << PAGE_SHIFT;
1069 if (dst_inode->i_size < new_size)
1070 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1071 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1072
0a2aa8fb
JK		 1073 f2fs_put_dnode(&dn);
1074 } else {
1075 struct page *psrc, *pdst;
1076
1077 psrc = get_lock_data_page(src_inode, src + i, true);
1078 if (IS_ERR(psrc))
1079 return PTR_ERR(psrc);
1080 pdst = get_new_data_page(dst_inode, NULL, dst + i,
1081 true);
1082 if (IS_ERR(pdst)) {
1083 f2fs_put_page(psrc, 1);
1084 return PTR_ERR(pdst);
1085 }
1086 f2fs_copy_page(psrc, pdst);
1087 set_page_dirty(pdst);
1088 f2fs_put_page(pdst, 1);
6e2c64ad 1089 f2fs_put_page(psrc, 1);
b4ace337 1090
0a2aa8fb
JK		 1091 ret = truncate_hole(src_inode, src + i, src + i + 1);
1092 if (ret)
1093 return ret;
1094 i++;
1095 }
6e2c64ad
JK		 1096 }
1097 return 0;
0a2aa8fb 1098}
b4ace337 1099
0a2aa8fb
JK		 1100static int __exchange_data_block(struct inode *src_inode,
1101 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1102 pgoff_t len, bool full)
0a2aa8fb
JK		 1103{
1104 block_t *src_blkaddr;
1105 int *do_replace;
363cad7f 1106 pgoff_t olen;
0a2aa8fb
JK		 1107 int ret;
1108
363cad7f
JK		 1109 while (len) {
1110 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len);
0a2aa8fb 1111
628b3d14
CY		 1112 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1113 sizeof(block_t) * olen, GFP_KERNEL);
363cad7f
JK		 1114 if (!src_blkaddr)
1115 return -ENOMEM;
0a2aa8fb 1116
628b3d14
CY		 1117 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1118 sizeof(int) * olen, GFP_KERNEL);
363cad7f
JK		 1119 if (!do_replace) {
1120 kvfree(src_blkaddr);
1121 return -ENOMEM;
1122 }
0a2aa8fb 1123
363cad7f
JK		 1124 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1125 do_replace, src, olen);
1126 if (ret)
1127 goto roll_back;
0a2aa8fb 1128
363cad7f
JK		 1129 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1130 do_replace, src, dst, olen, full);
1131 if (ret)
1132 goto roll_back;
1133
1134 src += olen;
1135 dst += olen;
1136 len -= olen;
1137
1138 kvfree(src_blkaddr);
1139 kvfree(do_replace);
1140 }
0a2aa8fb
JK		 1141 return 0;
1142
1143roll_back:
1144 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len);
1145 kvfree(src_blkaddr);
1146 kvfree(do_replace);
6e2c64ad
JK		 1147 return ret;
1148}
b4ace337 1149
6e2c64ad
JK		 1150static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
1151{
1152 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1153 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
0a2aa8fb 1154 int ret;
6e2c64ad 1155
0a2aa8fb
JK		 1156 f2fs_balance_fs(sbi, true);
1157 f2fs_lock_op(sbi);
5f281fab
JK		 1158
1159 f2fs_drop_extent_tree(inode);
1160
0a2aa8fb
JK		 1161 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1162 f2fs_unlock_op(sbi);
b4ace337
CY		 1163 return ret;
1164}
1165
1166static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1167{
1168 pgoff_t pg_start, pg_end;
1169 loff_t new_size;
1170 int ret;
1171
b4ace337
CY		 1172 if (offset + len >= i_size_read(inode))
1173 return -EINVAL;
1174
1175 /* collapse range should be aligned to block size of f2fs. */
1176 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1177 return -EINVAL;
1178
b9d777b8
JK		 1179 ret = f2fs_convert_inline_inode(inode);
1180 if (ret)
1181 return ret;
97a7b2c2 1182
09cbfeaf
KS		 1183 pg_start = offset >> PAGE_SHIFT;
1184 pg_end = (offset + len) >> PAGE_SHIFT;
b4ace337 1185
21020812
CY		 1186 /* avoid gc operation during block exchange */
1187 down_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
1188
5a3a2d83 1189 down_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337
CY		 1190 /* write out all dirty pages from offset */
1191 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1192 if (ret)
21020812 1193 goto out_unlock;
bb06664a 1194
b4ace337
CY		 1195 truncate_pagecache(inode, offset);
1196
1197 ret = f2fs_do_collapse(inode, pg_start, pg_end);
1198 if (ret)
bb06664a 1199 goto out_unlock;
b4ace337 1200
6e2c64ad
JK		 1201 /* write out all moved pages, if possible */
1202 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1203 truncate_pagecache(inode, offset);
1204
b4ace337 1205 new_size = i_size_read(inode) - len;
6e2c64ad 1206 truncate_pagecache(inode, new_size);
b4ace337
CY		 1207
1208 ret = truncate_blocks(inode, new_size, true);
1209 if (!ret)
fc9581c8 1210 f2fs_i_size_write(inode, new_size);
bb06664a 1211out_unlock:
5a3a2d83 1212 up_write(&F2FS_I(inode)->i_mmap_sem);
21020812 1213 up_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
b4ace337
CY		 1214 return ret;
1215}
1216
6e961949
CY		 1217static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1218 pgoff_t end)
1219{
1220 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1221 pgoff_t index = start;
1222 unsigned int ofs_in_node = dn->ofs_in_node;
1223 blkcnt_t count = 0;
1224 int ret;
1225
1226 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1227 if (datablock_addr(dn->inode, dn->node_page,
1228 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1229 count++;
1230 }
1231
1232 dn->ofs_in_node = ofs_in_node;
1233 ret = reserve_new_blocks(dn, count);
1234 if (ret)
1235 return ret;
1236
1237 dn->ofs_in_node = ofs_in_node;
1238 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1239 dn->data_blkaddr = datablock_addr(dn->inode,
1240 dn->node_page, dn->ofs_in_node);
6e961949
CY		 1241 /*
1242 * reserve_new_blocks will not guarantee entire block
1243 * allocation.
1244 */
1245 if (dn->data_blkaddr == NULL_ADDR) {
1246 ret = -ENOSPC;
1247 break;
1248 }
1249 if (dn->data_blkaddr != NEW_ADDR) {
1250 invalidate_blocks(sbi, dn->data_blkaddr);
1251 dn->data_blkaddr = NEW_ADDR;
1252 set_data_blkaddr(dn);
1253 }
1254 }
1255
1256 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1257
1258 return ret;
1259}
1260
75cd4e09
CY		 1261static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1262 int mode)
1263{
1264 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1265 struct address_space *mapping = inode->i_mapping;
1266 pgoff_t index, pg_start, pg_end;
1267 loff_t new_size = i_size_read(inode);
1268 loff_t off_start, off_end;
1269 int ret = 0;
1270
75cd4e09
CY		 1271 ret = inode_newsize_ok(inode, (len + offset));
1272 if (ret)
1273 return ret;
1274
b9d777b8
JK		 1275 ret = f2fs_convert_inline_inode(inode);
1276 if (ret)
1277 return ret;
75cd4e09 1278
5a3a2d83 1279 down_write(&F2FS_I(inode)->i_mmap_sem);
75cd4e09
CY		 1280 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1281 if (ret)
5a3a2d83 1282 goto out_sem;
75cd4e09
CY		 1283
1284 truncate_pagecache_range(inode, offset, offset + len - 1);
1285
09cbfeaf
KS		 1286 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1287 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1288
09cbfeaf
KS		 1289 off_start = offset & (PAGE_SIZE - 1);
1290 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1291
1292 if (pg_start == pg_end) {
6394328a
CY		 1293 ret = fill_zero(inode, pg_start, off_start,
1294 off_end - off_start);
1295 if (ret)
5a3a2d83 1296 goto out_sem;
6394328a 1297
75cd4e09
CY		 1298 new_size = max_t(loff_t, new_size, offset + len);
1299 } else {
1300 if (off_start) {
6394328a 1301 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1302 PAGE_SIZE - off_start);
6394328a 1303 if (ret)
5a3a2d83 1304 goto out_sem;
6394328a 1305
75cd4e09 1306 new_size = max_t(loff_t, new_size,
09cbfeaf 1307 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1308 }
1309
6e961949 1310 for (index = pg_start; index < pg_end;) {
75cd4e09 1311 struct dnode_of_data dn;
6e961949
CY		 1312 unsigned int end_offset;
1313 pgoff_t end;
75cd4e09
CY		 1314
1315 f2fs_lock_op(sbi);
1316
6e961949
CY		 1317 set_new_dnode(&dn, inode, NULL, NULL, 0);
1318 ret = get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1319 if (ret) {
1320 f2fs_unlock_op(sbi);
1321 goto out;
1322 }
1323
6e961949
CY		 1324 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1325 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1326
1327 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09
CY		 1328 f2fs_put_dnode(&dn);
1329 f2fs_unlock_op(sbi);
9434fcde
CY		 1330
1331 f2fs_balance_fs(sbi, dn.node_changed);
1332
6e961949
CY		 1333 if (ret)
1334 goto out;
75cd4e09 1335
6e961949 1336 index = end;
75cd4e09 1337 new_size = max_t(loff_t, new_size,
6e961949 1338 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1339 }
1340
1341 if (off_end) {
6394328a
CY		 1342 ret = fill_zero(inode, pg_end, 0, off_end);
1343 if (ret)
1344 goto out;
1345
75cd4e09
CY		 1346 new_size = max_t(loff_t, new_size, offset + len);
1347 }
1348 }
1349
1350out:
ee6d182f 1351 if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size)
fc9581c8 1352 f2fs_i_size_write(inode, new_size);
5a3a2d83
QS		 1353out_sem:
1354 up_write(&F2FS_I(inode)->i_mmap_sem);
75cd4e09
CY		 1355
1356 return ret;
1357}
1358
f62185d0
CY		 1359static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1360{
1361 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1362 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1363 loff_t new_size;
6e2c64ad 1364 int ret = 0;
f62185d0 1365
f62185d0 1366 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1367 ret = inode_newsize_ok(inode, new_size);
1368 if (ret)
1369 return ret;
f62185d0
CY		 1370
1371 if (offset >= i_size_read(inode))
1372 return -EINVAL;
1373
1374 /* insert range should be aligned to block size of f2fs. */
1375 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1376 return -EINVAL;
1377
b9d777b8
JK		 1378 ret = f2fs_convert_inline_inode(inode);
1379 if (ret)
1380 return ret;
97a7b2c2 1381
2c4db1a6 1382 f2fs_balance_fs(sbi, true);
2a340760 1383
21020812
CY		 1384 /* avoid gc operation during block exchange */
1385 down_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
1386
5a3a2d83 1387 down_write(&F2FS_I(inode)->i_mmap_sem);
f62185d0
CY		 1388 ret = truncate_blocks(inode, i_size_read(inode), true);
1389 if (ret)
5a3a2d83 1390 goto out;
f62185d0
CY		 1391
1392 /* write out all dirty pages from offset */
1393 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1394 if (ret)
5a3a2d83 1395 goto out;
f62185d0
CY		 1396
1397 truncate_pagecache(inode, offset);
1398
09cbfeaf
KS		 1399 pg_start = offset >> PAGE_SHIFT;
1400 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1401 delta = pg_end - pg_start;
0a2aa8fb
JK		 1402 idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1403
1404 while (!ret && idx > pg_start) {
1405 nr = idx - pg_start;
1406 if (nr > delta)
1407 nr = delta;
1408 idx -= nr;
f62185d0 1409
f62185d0 1410 f2fs_lock_op(sbi);
5f281fab
JK		 1411 f2fs_drop_extent_tree(inode);
1412
0a2aa8fb
JK		 1413 ret = __exchange_data_block(inode, inode, idx,
1414 idx + delta, nr, false);
f62185d0
CY		 1415 f2fs_unlock_op(sbi);
1416 }
1417
6e2c64ad
JK		 1418 /* write out all moved pages, if possible */
1419 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1420 truncate_pagecache(inode, offset);
1421
1422 if (!ret)
fc9581c8 1423 f2fs_i_size_write(inode, new_size);
5a3a2d83
QS		 1424out:
1425 up_write(&F2FS_I(inode)->i_mmap_sem);
21020812 1426 up_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
f62185d0
CY		 1427 return ret;
1428}
1429
fbfa2cc5
JK		 1430static int expand_inode_data(struct inode *inode, loff_t offset,
1431 loff_t len, int mode)
1432{
4081363f 1433 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1434 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
c4020b2d 1435 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE };
e12dd7bd 1436 pgoff_t pg_end;
fbfa2cc5 1437 loff_t new_size = i_size_read(inode);
e12dd7bd 1438 loff_t off_end;
a7de6086 1439 int err;
fbfa2cc5 1440
a7de6086
JK		 1441 err = inode_newsize_ok(inode, (len + offset));
1442 if (err)
1443 return err;
fbfa2cc5 1444
a7de6086
JK		 1445 err = f2fs_convert_inline_inode(inode);
1446 if (err)
1447 return err;
9e09fc85 1448
2c4db1a6 1449 f2fs_balance_fs(sbi, true);
2a340760 1450
e12dd7bd 1451 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1452 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1453
e12dd7bd
JK		 1454 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1455 map.m_len = pg_end - map.m_lblk;
1456 if (off_end)
1457 map.m_len++;
ead43275 1458
a7de6086
JK		 1459 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1460 if (err) {
e12dd7bd 1461 pgoff_t last_off;
fbfa2cc5 1462
e12dd7bd 1463 if (!map.m_len)
a7de6086 1464 return err;
98397ff3 1465
e12dd7bd
JK		 1466 last_off = map.m_lblk + map.m_len - 1;
1467
1468 /* update new size to the failed position */
1469 new_size = (last_off == pg_end) ? offset + len:
1470 (loff_t)(last_off + 1) << PAGE_SHIFT;
1471 } else {
1472 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1473 }
1474
e8ed90a6
CY		 1475 if (new_size > i_size_read(inode)) {
1476 if (mode & FALLOC_FL_KEEP_SIZE)
1477 file_set_keep_isize(inode);
1478 else
1479 f2fs_i_size_write(inode, new_size);
1480 }
fbfa2cc5 1481
a7de6086 1482 return err;
fbfa2cc5
JK		 1483}
1484
1485static long f2fs_fallocate(struct file *file, int mode,
1486 loff_t offset, loff_t len)
1487{
6131ffaa 1488 struct inode *inode = file_inode(file);
587c0a42 1489 long ret = 0;
fbfa2cc5 1490
1f227a3e
JK		 1491 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1492 return -EIO;
1493
c998012b
CY		 1494 /* f2fs only support ->fallocate for regular file */
1495 if (!S_ISREG(inode->i_mode))
1496 return -EINVAL;
1497
f62185d0
CY		 1498 if (f2fs_encrypted_inode(inode) &&
1499 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1500 return -EOPNOTSUPP;
1501
b4ace337 1502 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1503 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1504 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1505 return -EOPNOTSUPP;
1506
5955102c 1507 inode_lock(inode);
3375f696 1508
587c0a42
TY		 1509 if (mode & FALLOC_FL_PUNCH_HOLE) {
1510 if (offset >= inode->i_size)
1511 goto out;
1512
a66c7b2f 1513 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1514 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1515 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1516 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1517 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1518 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1519 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1520 } else {
fbfa2cc5 1521 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1522 }
fbfa2cc5 1523
3af60a49 1524 if (!ret) {
078cd827 1525 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1526 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1527 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1528 }
3375f696 1529
587c0a42 1530out:
5955102c 1531 inode_unlock(inode);
3375f696 1532
c01e2853 1533 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1534 return ret;
1535}
1536
1e84371f
JK		 1537static int f2fs_release_file(struct inode *inode, struct file *filp)
1538{
de5307e4
JK		 1539 /*
1540 * f2fs_relase_file is called at every close calls. So we should
1541 * not drop any inmemory pages by close called by other process.
1542 */
1543 if (!(filp->f_mode & FMODE_WRITE) ||
1544 atomic_read(&inode->i_writecount) != 1)
1545 return 0;
1546
1e84371f
JK		 1547 /* some remained atomic pages should discarded */
1548 if (f2fs_is_atomic_file(inode))
29b96b54 1549 drop_inmem_pages(inode);
1e84371f 1550 if (f2fs_is_volatile_file(inode)) {
91942321 1551 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 1552 stat_dec_volatile_write(inode);
91942321 1553 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1554 filemap_fdatawrite(inode->i_mapping);
91942321 1555 clear_inode_flag(inode, FI_DROP_CACHE);
1e84371f
JK		 1556 }
1557 return 0;
1558}
1559
7a10f017 1560static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1561{
7a10f017
JK		 1562 struct inode *inode = file_inode(file);
1563
1564 /*
1565 * If the process doing a transaction is crashed, we should do
1566 * roll-back. Otherwise, other reader/write can see corrupted database
1567 * until all the writers close its file. Since this should be done
1568 * before dropping file lock, it needs to do in ->flush.
1569 */
1570 if (f2fs_is_atomic_file(inode) &&
1571 F2FS_I(inode)->inmem_task == current)
1572 drop_inmem_pages(inode);
1573 return 0;
fbfa2cc5
JK		 1574}
1575
52656e6c 1576static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
fbfa2cc5 1577{
6131ffaa 1578 struct inode *inode = file_inode(filp);
fbfa2cc5 1579 struct f2fs_inode_info *fi = F2FS_I(inode);
2c1d0305
CY		 1580 unsigned int flags = fi->i_flags &
1581 (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL);
52656e6c
JK		 1582 return put_user(flags, (int __user *)arg);
1583}
fbfa2cc5 1584
2c1d0305
CY		 1585static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags)
1586{
1587 struct f2fs_inode_info *fi = F2FS_I(inode);
1588 unsigned int oldflags;
1589
1590 /* Is it quota file? Do not allow user to mess with it */
1591 if (IS_NOQUOTA(inode))
1592 return -EPERM;
1593
1594 flags = f2fs_mask_flags(inode->i_mode, flags);
1595
1596 oldflags = fi->i_flags;
1597
1598 if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL))
1599 if (!capable(CAP_LINUX_IMMUTABLE))
1600 return -EPERM;
1601
1602 flags = flags & (FS_FL_USER_MODIFIABLE | FS_PROJINHERIT_FL);
1603 flags |= oldflags & ~(FS_FL_USER_MODIFIABLE | FS_PROJINHERIT_FL);
1604 fi->i_flags = flags;
1605
1606 if (fi->i_flags & FS_PROJINHERIT_FL)
1607 set_inode_flag(inode, FI_PROJ_INHERIT);
1608 else
1609 clear_inode_flag(inode, FI_PROJ_INHERIT);
1610
1611 inode->i_ctime = current_time(inode);
1612 f2fs_set_inode_flags(inode);
1613 f2fs_mark_inode_dirty_sync(inode, false);
1614 return 0;
1615}
1616
52656e6c
JK		 1617static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1618{
1619 struct inode *inode = file_inode(filp);
69494229 1620 unsigned int flags;
52656e6c 1621 int ret;
fbfa2cc5 1622
7fb17fe4
CY		 1623 if (!inode_owner_or_capable(inode))
1624 return -EACCES;
1625
1626 if (get_user(flags, (int __user *)arg))
1627 return -EFAULT;
1628
52656e6c
JK		 1629 ret = mnt_want_write_file(filp);
1630 if (ret)
1631 return ret;
fbfa2cc5 1632
5955102c 1633 inode_lock(inode);
fbfa2cc5 1634
2c1d0305 1635 ret = __f2fs_ioc_setflags(inode, flags);
fbfa2cc5 1636
a72d4b97 1637 inode_unlock(inode);
52656e6c
JK		 1638 mnt_drop_write_file(filp);
1639 return ret;
1640}
4b2fecc8 1641
d49f3e89
CY		 1642static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1643{
1644 struct inode *inode = file_inode(filp);
1645
1646 return put_user(inode->i_generation, (int __user *)arg);
1647}
1648
88b88a66
JK		 1649static int f2fs_ioc_start_atomic_write(struct file *filp)
1650{
1651 struct inode *inode = file_inode(filp);
f4c9c743 1652 int ret;
88b88a66
JK		 1653
1654 if (!inode_owner_or_capable(inode))
1655 return -EACCES;
1656
e811898c
JK		 1657 if (!S_ISREG(inode->i_mode))
1658 return -EINVAL;
1659
7fb17fe4
CY		 1660 ret = mnt_want_write_file(filp);
1661 if (ret)
1662 return ret;
1663
0fac558b
CY		 1664 inode_lock(inode);
1665
1e84371f 1666 if (f2fs_is_atomic_file(inode))
7fb17fe4 1667 goto out;
88b88a66 1668
f4c9c743
CY		 1669 ret = f2fs_convert_inline_inode(inode);
1670 if (ret)
7fb17fe4 1671 goto out;
88b88a66 1672
91942321 1673 set_inode_flag(inode, FI_ATOMIC_FILE);
6c3acd97 1674 set_inode_flag(inode, FI_HOT_DATA);
d0239e1b
JK		 1675 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1676
c27753d6 1677 if (!get_dirty_pages(inode))
684ca7e5 1678 goto inc_stat;
c27753d6
JK		 1679
1680 f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
204706c7 1681 "Unexpected flush for atomic writes: ino=%lu, npages=%u",
c27753d6
JK		 1682 inode->i_ino, get_dirty_pages(inode));
1683 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
684ca7e5 1684 if (ret) {
91942321 1685 clear_inode_flag(inode, FI_ATOMIC_FILE);
84a23fbe 1686 clear_inode_flag(inode, FI_HOT_DATA);
684ca7e5
KM		 1687 goto out;
1688 }
1689
1690inc_stat:
7a10f017 1691 F2FS_I(inode)->inmem_task = current;
26a28a0c
JK		 1692 stat_inc_atomic_write(inode);
1693 stat_update_max_atomic_write(inode);
684ca7e5 1694out:
0fac558b 1695 inode_unlock(inode);
7fb17fe4 1696 mnt_drop_write_file(filp);
c27753d6 1697 return ret;
88b88a66
JK		 1698}
1699
1700static int f2fs_ioc_commit_atomic_write(struct file *filp)
1701{
1702 struct inode *inode = file_inode(filp);
1703 int ret;
1704
1705 if (!inode_owner_or_capable(inode))
1706 return -EACCES;
1707
1708 ret = mnt_want_write_file(filp);
1709 if (ret)
1710 return ret;
1711
0fac558b
CY		 1712 inode_lock(inode);
1713
7fb17fe4
CY		 1714 if (f2fs_is_volatile_file(inode))
1715 goto err_out;
1716
6282adbf 1717 if (f2fs_is_atomic_file(inode)) {
29b96b54 1718 ret = commit_inmem_pages(inode);
5fe45743 1719 if (ret)
edb27dee 1720 goto err_out;
5fe45743 1721
26a28a0c 1722 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
5fe45743
CY		 1723 if (!ret) {
1724 clear_inode_flag(inode, FI_ATOMIC_FILE);
84a23fbe 1725 clear_inode_flag(inode, FI_HOT_DATA);
5fe45743 1726 stat_dec_atomic_write(inode);
447135a8 1727 }
26a28a0c 1728 } else {
774e1b78 1729 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 1730 }
edb27dee 1731err_out:
0fac558b 1732 inode_unlock(inode);
88b88a66
JK		 1733 mnt_drop_write_file(filp);
1734 return ret;
1735}
1736
02a1335f
JK		 1737static int f2fs_ioc_start_volatile_write(struct file *filp)
1738{
1739 struct inode *inode = file_inode(filp);
f4c9c743 1740 int ret;
02a1335f
JK		 1741
1742 if (!inode_owner_or_capable(inode))
1743 return -EACCES;
1744
8ff0971f
CY		 1745 if (!S_ISREG(inode->i_mode))
1746 return -EINVAL;
1747
7fb17fe4
CY		 1748 ret = mnt_want_write_file(filp);
1749 if (ret)
1750 return ret;
1751
0fac558b
CY		 1752 inode_lock(inode);
1753
1e84371f 1754 if (f2fs_is_volatile_file(inode))
7fb17fe4 1755 goto out;
1e84371f 1756
f4c9c743
CY		 1757 ret = f2fs_convert_inline_inode(inode);
1758 if (ret)
7fb17fe4 1759 goto out;
b3d208f9 1760
648d50ba
CY		 1761 stat_inc_volatile_write(inode);
1762 stat_update_max_volatile_write(inode);
1763
91942321 1764 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 1765 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1766out:
0fac558b 1767 inode_unlock(inode);
7fb17fe4
CY		 1768 mnt_drop_write_file(filp);
1769 return ret;
02a1335f
JK		 1770}
1771
1e84371f
JK		 1772static int f2fs_ioc_release_volatile_write(struct file *filp)
1773{
1774 struct inode *inode = file_inode(filp);
7fb17fe4 1775 int ret;
1e84371f
JK		 1776
1777 if (!inode_owner_or_capable(inode))
1778 return -EACCES;
1779
7fb17fe4
CY		 1780 ret = mnt_want_write_file(filp);
1781 if (ret)
1782 return ret;
1783
0fac558b
CY		 1784 inode_lock(inode);
1785
1e84371f 1786 if (!f2fs_is_volatile_file(inode))
7fb17fe4 1787 goto out;
1e84371f 1788
7fb17fe4
CY		 1789 if (!f2fs_is_first_block_written(inode)) {
1790 ret = truncate_partial_data_page(inode, 0, true);
1791 goto out;
1792 }
3c6c2beb 1793
7fb17fe4
CY		 1794 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1795out:
0fac558b 1796 inode_unlock(inode);
7fb17fe4
CY		 1797 mnt_drop_write_file(filp);
1798 return ret;
1e84371f
JK		 1799}
1800
1801static int f2fs_ioc_abort_volatile_write(struct file *filp)
1802{
1803 struct inode *inode = file_inode(filp);
1804 int ret;
1805
1806 if (!inode_owner_or_capable(inode))
1807 return -EACCES;
1808
1809 ret = mnt_want_write_file(filp);
1810 if (ret)
1811 return ret;
1812
0fac558b
CY		 1813 inode_lock(inode);
1814
26dc3d44 1815 if (f2fs_is_atomic_file(inode))
29b96b54 1816 drop_inmem_pages(inode);
732d5648 1817 if (f2fs_is_volatile_file(inode)) {
91942321 1818 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 1819 stat_dec_volatile_write(inode);
608514de 1820 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 1821 }
de6a8ec9 1822
0fac558b
CY		 1823 inode_unlock(inode);
1824
1e84371f 1825 mnt_drop_write_file(filp);
d0239e1b 1826 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 1827 return ret;
1828}
1829
1abff93d
JK		 1830static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1831{
1832 struct inode *inode = file_inode(filp);
1833 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1834 struct super_block *sb = sbi->sb;
1835 __u32 in;
7fb17fe4 1836 int ret;
1abff93d
JK		 1837
1838 if (!capable(CAP_SYS_ADMIN))
1839 return -EPERM;
1840
1841 if (get_user(in, (__u32 __user *)arg))
1842 return -EFAULT;
1843
7fb17fe4
CY		 1844 ret = mnt_want_write_file(filp);
1845 if (ret)
1846 return ret;
1847
1abff93d
JK		 1848 switch (in) {
1849 case F2FS_GOING_DOWN_FULLSYNC:
1850 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 1851 if (IS_ERR(sb)) {
1852 ret = PTR_ERR(sb);
1853 goto out;
1854 }
1855 if (sb) {
38f91ca8 1856 f2fs_stop_checkpoint(sbi, false);
1abff93d
JK		 1857 thaw_bdev(sb->s_bdev, sb);
1858 }
1859 break;
1860 case F2FS_GOING_DOWN_METASYNC:
1861 /* do checkpoint only */
d027c484
CY		 1862 ret = f2fs_sync_fs(sb, 1);
1863 if (ret)
1864 goto out;
38f91ca8 1865 f2fs_stop_checkpoint(sbi, false);
1abff93d
JK		 1866 break;
1867 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 1868 f2fs_stop_checkpoint(sbi, false);
1abff93d 1869 break;
c912a829 1870 case F2FS_GOING_DOWN_METAFLUSH:
b0af6d49 1871 sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 1872 f2fs_stop_checkpoint(sbi, false);
c912a829 1873 break;
1abff93d 1874 default:
7fb17fe4
CY		 1875 ret = -EINVAL;
1876 goto out;
1abff93d 1877 }
7950e9ac
CY		 1878
1879 stop_gc_thread(sbi);
1880 stop_discard_thread(sbi);
1881
1882 drop_discard_cmd(sbi);
1883 clear_opt(sbi, DISCARD);
1884
d0239e1b 1885 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4
CY		 1886out:
1887 mnt_drop_write_file(filp);
1888 return ret;
1abff93d
JK		 1889}
1890
52656e6c
JK		 1891static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1892{
1893 struct inode *inode = file_inode(filp);
1894 struct super_block *sb = inode->i_sb;
1895 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1896 struct fstrim_range range;
1897 int ret;
4b2fecc8 1898
52656e6c
JK		 1899 if (!capable(CAP_SYS_ADMIN))
1900 return -EPERM;
4b2fecc8 1901
52656e6c
JK		 1902 if (!blk_queue_discard(q))
1903 return -EOPNOTSUPP;
4b2fecc8 1904
52656e6c
JK		 1905 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
1906 sizeof(range)))
1907 return -EFAULT;
4b2fecc8 1908
7fb17fe4
CY		 1909 ret = mnt_want_write_file(filp);
1910 if (ret)
1911 return ret;
1912
52656e6c
JK		 1913 range.minlen = max((unsigned int)range.minlen,
1914 q->limits.discard_granularity);
1915 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 1916 mnt_drop_write_file(filp);
52656e6c
JK		 1917 if (ret < 0)
1918 return ret;
4b2fecc8 1919
52656e6c
JK		 1920 if (copy_to_user((struct fstrim_range __user *)arg, &range,
1921 sizeof(range)))
1922 return -EFAULT;
d0239e1b 1923 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 1924 return 0;
1925}
1926
f424f664
JK		 1927static bool uuid_is_nonzero(__u8 u[16])
1928{
1929 int i;
1930
1931 for (i = 0; i < 16; i++)
1932 if (u[i])
1933 return true;
1934 return false;
1935}
1936
1937static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
1938{
f424f664
JK		 1939 struct inode *inode = file_inode(filp);
1940
ccd31cb2 1941 if (!f2fs_sb_has_encrypt(inode->i_sb))
ead710b7
CY		 1942 return -EOPNOTSUPP;
1943
d0239e1b 1944 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1945
db717d8e 1946 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 1947}
1948
1949static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
1950{
ccd31cb2 1951 if (!f2fs_sb_has_encrypt(file_inode(filp)->i_sb))
ead710b7 1952 return -EOPNOTSUPP;
db717d8e 1953 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 1954}
1955
1956static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
1957{
1958 struct inode *inode = file_inode(filp);
1959 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1960 int err;
1961
ccd31cb2 1962 if (!f2fs_sb_has_encrypt(inode->i_sb))
f424f664
JK		 1963 return -EOPNOTSUPP;
1964
f424f664
JK		 1965 err = mnt_want_write_file(filp);
1966 if (err)
1967 return err;
1968
d0d3f1b3
CY		 1969 mutex_lock(&sbi->sb_lock);
1970
1971 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
1972 goto got_it;
1973
f424f664
JK		 1974 /* update superblock with uuid */
1975 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
1976
c5bda1c8 1977 err = f2fs_commit_super(sbi, false);
f424f664
JK		 1978 if (err) {
1979 /* undo new data */
1980 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 1981 goto out_err;
f424f664
JK		 1982 }
1983got_it:
1984 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
1985 16))
d0d3f1b3
CY		 1986 err = -EFAULT;
1987out_err:
1988 mutex_unlock(&sbi->sb_lock);
1989 mnt_drop_write_file(filp);
1990 return err;
f424f664
JK		 1991}
1992
c1c1b583
CY		 1993static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
1994{
1995 struct inode *inode = file_inode(filp);
1996 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 1997 __u32 sync;
7fb17fe4 1998 int ret;
c1c1b583
CY		 1999
2000 if (!capable(CAP_SYS_ADMIN))
2001 return -EPERM;
2002
d530d4d8 2003 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2004 return -EFAULT;
2005
d530d4d8
CY		 2006 if (f2fs_readonly(sbi->sb))
2007 return -EROFS;
c1c1b583 2008
7fb17fe4
CY		 2009 ret = mnt_want_write_file(filp);
2010 if (ret)
2011 return ret;
2012
d530d4d8 2013 if (!sync) {
7fb17fe4
CY		 2014 if (!mutex_trylock(&sbi->gc_mutex)) {
2015 ret = -EBUSY;
2016 goto out;
2017 }
d530d4d8
CY		 2018 } else {
2019 mutex_lock(&sbi->gc_mutex);
c1c1b583
CY		 2020 }
2021
e066b83c 2022 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2023out:
2024 mnt_drop_write_file(filp);
2025 return ret;
c1c1b583
CY		 2026}
2027
34dc77ad
JK		 2028static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2029{
2030 struct inode *inode = file_inode(filp);
2031 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2032 struct f2fs_gc_range range;
2033 u64 end;
2034 int ret;
2035
2036 if (!capable(CAP_SYS_ADMIN))
2037 return -EPERM;
2038
2039 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2040 sizeof(range)))
2041 return -EFAULT;
2042
2043 if (f2fs_readonly(sbi->sb))
2044 return -EROFS;
2045
2046 ret = mnt_want_write_file(filp);
2047 if (ret)
2048 return ret;
2049
2050 end = range.start + range.len;
2051 if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi))
2052 return -EINVAL;
2053do_more:
2054 if (!range.sync) {
2055 if (!mutex_trylock(&sbi->gc_mutex)) {
2056 ret = -EBUSY;
2057 goto out;
2058 }
2059 } else {
2060 mutex_lock(&sbi->gc_mutex);
2061 }
2062
2063 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
2064 range.start += sbi->blocks_per_seg;
2065 if (range.start <= end)
2066 goto do_more;
2067out:
2068 mnt_drop_write_file(filp);
2069 return ret;
2070}
2071
456b88e4
CY		 2072static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2073{
2074 struct inode *inode = file_inode(filp);
2075 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2076 int ret;
456b88e4
CY		 2077
2078 if (!capable(CAP_SYS_ADMIN))
2079 return -EPERM;
2080
2081 if (f2fs_readonly(sbi->sb))
2082 return -EROFS;
2083
7fb17fe4
CY		 2084 ret = mnt_want_write_file(filp);
2085 if (ret)
2086 return ret;
2087
2088 ret = f2fs_sync_fs(sbi->sb, 1);
2089
2090 mnt_drop_write_file(filp);
2091 return ret;
456b88e4
CY		 2092}
2093
d323d005
CY		 2094static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2095 struct file *filp,
2096 struct f2fs_defragment *range)
2097{
2098 struct inode *inode = file_inode(filp);
f3d98e74
CY		 2099 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2100 .m_seg_type = NO_CHECK_TYPE };
e15882b6 2101 struct extent_info ei = {0,0,0};
f3d98e74 2102 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2103 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2104 unsigned int total = 0, sec_num;
d323d005
CY		 2105 block_t blk_end = 0;
2106 bool fragmented = false;
2107 int err;
2108
2109 /* if in-place-update policy is enabled, don't waste time here */
bb9e3bb8 2110 if (should_update_inplace(inode, NULL))
d323d005
CY		 2111 return -EINVAL;
2112
09cbfeaf
KS		 2113 pg_start = range->start >> PAGE_SHIFT;
2114 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2115
2c4db1a6 2116 f2fs_balance_fs(sbi, true);
d323d005 2117
5955102c 2118 inode_lock(inode);
d323d005
CY		 2119
2120 /* writeback all dirty pages in the range */
2121 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2122 range->start + range->len - 1);
d323d005
CY		 2123 if (err)
2124 goto out;
2125
2126 /*
2127 * lookup mapping info in extent cache, skip defragmenting if physical
2128 * block addresses are continuous.
2129 */
2130 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2131 if (ei.fofs + ei.len >= pg_end)
2132 goto out;
2133 }
2134
2135 map.m_lblk = pg_start;
f3d98e74 2136 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2137
2138 /*
2139 * lookup mapping info in dnode page cache, skip defragmenting if all
2140 * physical block addresses are continuous even if there are hole(s)
2141 * in logical blocks.
2142 */
2143 while (map.m_lblk < pg_end) {
a1c1e9b7 2144 map.m_len = pg_end - map.m_lblk;
f2220c7f 2145 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2146 if (err)
2147 goto out;
2148
2149 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2150 map.m_lblk = next_pgofs;
d323d005
CY		 2151 continue;
2152 }
2153
25a912e5 2154 if (blk_end && blk_end != map.m_pblk)
d323d005 2155 fragmented = true;
25a912e5
CY		 2156
2157 /* record total count of block that we're going to move */
2158 total += map.m_len;
2159
d323d005
CY		 2160 blk_end = map.m_pblk + map.m_len;
2161
2162 map.m_lblk += map.m_len;
d323d005
CY		 2163 }
2164
2165 if (!fragmented)
2166 goto out;
2167
25a912e5 2168 sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
d323d005
CY		 2169
2170 /*
2171 * make sure there are enough free section for LFS allocation, this can
2172 * avoid defragment running in SSR mode when free section are allocated
2173 * intensively
2174 */
7f3037a5 2175 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2176 err = -EAGAIN;
2177 goto out;
2178 }
2179
25a912e5
CY		 2180 map.m_lblk = pg_start;
2181 map.m_len = pg_end - pg_start;
2182 total = 0;
2183
d323d005
CY		 2184 while (map.m_lblk < pg_end) {
2185 pgoff_t idx;
2186 int cnt = 0;
2187
2188do_map:
a1c1e9b7 2189 map.m_len = pg_end - map.m_lblk;
f2220c7f 2190 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2191 if (err)
2192 goto clear_out;
2193
2194 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2195 map.m_lblk = next_pgofs;
d323d005
CY		 2196 continue;
2197 }
2198
91942321 2199 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2200
2201 idx = map.m_lblk;
2202 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2203 struct page *page;
2204
2205 page = get_lock_data_page(inode, idx, true);
2206 if (IS_ERR(page)) {
2207 err = PTR_ERR(page);
2208 goto clear_out;
2209 }
2210
2211 set_page_dirty(page);
2212 f2fs_put_page(page, 1);
2213
2214 idx++;
2215 cnt++;
2216 total++;
2217 }
2218
2219 map.m_lblk = idx;
d323d005
CY		 2220
2221 if (idx < pg_end && cnt < blk_per_seg)
2222 goto do_map;
2223
91942321 2224 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2225
2226 err = filemap_fdatawrite(inode->i_mapping);
2227 if (err)
2228 goto out;
2229 }
2230clear_out:
91942321 2231 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2232out:
5955102c 2233 inode_unlock(inode);
d323d005 2234 if (!err)
09cbfeaf 2235 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2236 return err;
2237}
2238
2239static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2240{
2241 struct inode *inode = file_inode(filp);
2242 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2243 struct f2fs_defragment range;
2244 int err;
2245
2246 if (!capable(CAP_SYS_ADMIN))
2247 return -EPERM;
2248
7eab0c0d 2249 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2250 return -EINVAL;
2251
d7563861
KM		 2252 if (f2fs_readonly(sbi->sb))
2253 return -EROFS;
d323d005
CY		 2254
2255 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2256 sizeof(range)))
2257 return -EFAULT;
d323d005
CY		 2258
2259 /* verify alignment of offset & size */
d7563861
KM		 2260 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2261 return -EINVAL;
d323d005 2262
1941d7bc 2263 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2264 sbi->max_file_blocks))
2265 return -EINVAL;
2266
2267 err = mnt_want_write_file(filp);
2268 if (err)
2269 return err;
1941d7bc 2270
d323d005 2271 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2272 mnt_drop_write_file(filp);
2273
d0239e1b 2274 f2fs_update_time(sbi, REQ_TIME);
d323d005 2275 if (err < 0)
d7563861 2276 return err;
d323d005
CY		 2277
2278 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2279 sizeof(range)))
d7563861
KM		 2280 return -EFAULT;
2281
2282 return 0;
d323d005
CY		 2283}
2284
4dd6f977
JK		 2285static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2286 struct file *file_out, loff_t pos_out, size_t len)
2287{
2288 struct inode *src = file_inode(file_in);
2289 struct inode *dst = file_inode(file_out);
2290 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2291 size_t olen = len, dst_max_i_size = 0;
2292 size_t dst_osize;
2293 int ret;
2294
2295 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2296 src->i_sb != dst->i_sb)
2297 return -EXDEV;
2298
2299 if (unlikely(f2fs_readonly(src->i_sb)))
2300 return -EROFS;
2301
fe8494bf
CY		 2302 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2303 return -EINVAL;
4dd6f977
JK		 2304
2305 if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
2306 return -EOPNOTSUPP;
2307
d95fd91c
FL		 2308 if (src == dst) {
2309 if (pos_in == pos_out)
2310 return 0;
2311 if (pos_out > pos_in && pos_out < pos_in + len)
2312 return -EINVAL;
2313 }
2314
4dd6f977 2315 inode_lock(src);
bb06664a 2316 down_write(&F2FS_I(src)->dio_rwsem[WRITE]);
20a3d61d 2317 if (src != dst) {
bb06664a
CY		 2318 ret = -EBUSY;
2319 if (!inode_trylock(dst))
2320 goto out;
2321 if (!down_write_trylock(&F2FS_I(dst)->dio_rwsem[WRITE])) {
2322 inode_unlock(dst);
20a3d61d
CY		 2323 goto out;
2324 }
2325 }
4dd6f977
JK		 2326
2327 ret = -EINVAL;
2328 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2329 goto out_unlock;
2330 if (len == 0)
2331 olen = len = src->i_size - pos_in;
2332 if (pos_in + len == src->i_size)
2333 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2334 if (len == 0) {
2335 ret = 0;
2336 goto out_unlock;
2337 }
2338
2339 dst_osize = dst->i_size;
2340 if (pos_out + olen > dst->i_size)
2341 dst_max_i_size = pos_out + olen;
2342
2343 /* verify the end result is block aligned */
2344 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2345 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2346 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2347 goto out_unlock;
2348
2349 ret = f2fs_convert_inline_inode(src);
2350 if (ret)
2351 goto out_unlock;
2352
2353 ret = f2fs_convert_inline_inode(dst);
2354 if (ret)
2355 goto out_unlock;
2356
2357 /* write out all dirty pages from offset */
2358 ret = filemap_write_and_wait_range(src->i_mapping,
2359 pos_in, pos_in + len);
2360 if (ret)
2361 goto out_unlock;
2362
2363 ret = filemap_write_and_wait_range(dst->i_mapping,
2364 pos_out, pos_out + len);
2365 if (ret)
2366 goto out_unlock;
2367
2368 f2fs_balance_fs(sbi, true);
2369 f2fs_lock_op(sbi);
61e4da11
FL		 2370 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2371 pos_out >> F2FS_BLKSIZE_BITS,
2372 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2373
2374 if (!ret) {
2375 if (dst_max_i_size)
2376 f2fs_i_size_write(dst, dst_max_i_size);
2377 else if (dst_osize != dst->i_size)
2378 f2fs_i_size_write(dst, dst_osize);
2379 }
2380 f2fs_unlock_op(sbi);
2381out_unlock:
bb06664a
CY		 2382 if (src != dst) {
2383 up_write(&F2FS_I(dst)->dio_rwsem[WRITE]);
4dd6f977 2384 inode_unlock(dst);
bb06664a 2385 }
20a3d61d 2386out:
bb06664a 2387 up_write(&F2FS_I(src)->dio_rwsem[WRITE]);
4dd6f977
JK		 2388 inode_unlock(src);
2389 return ret;
2390}
2391
2392static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2393{
2394 struct f2fs_move_range range;
2395 struct fd dst;
2396 int err;
2397
2398 if (!(filp->f_mode & FMODE_READ) ||
2399 !(filp->f_mode & FMODE_WRITE))
2400 return -EBADF;
2401
2402 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2403 sizeof(range)))
2404 return -EFAULT;
2405
2406 dst = fdget(range.dst_fd);
2407 if (!dst.file)
2408 return -EBADF;
2409
2410 if (!(dst.file->f_mode & FMODE_WRITE)) {
2411 err = -EBADF;
2412 goto err_out;
2413 }
2414
2415 err = mnt_want_write_file(filp);
2416 if (err)
2417 goto err_out;
2418
2419 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2420 range.pos_out, range.len);
2421
2422 mnt_drop_write_file(filp);
3cecfa5f
KM		 2423 if (err)
2424 goto err_out;
4dd6f977
JK		 2425
2426 if (copy_to_user((struct f2fs_move_range __user *)arg,
2427 &range, sizeof(range)))
2428 err = -EFAULT;
2429err_out:
2430 fdput(dst);
2431 return err;
2432}
2433
e066b83c
JK		 2434static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2435{
2436 struct inode *inode = file_inode(filp);
2437 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2438 struct sit_info *sm = SIT_I(sbi);
2439 unsigned int start_segno = 0, end_segno = 0;
2440 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2441 struct f2fs_flush_device range;
2442 int ret;
2443
2444 if (!capable(CAP_SYS_ADMIN))
2445 return -EPERM;
2446
2447 if (f2fs_readonly(sbi->sb))
2448 return -EROFS;
2449
2450 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2451 sizeof(range)))
2452 return -EFAULT;
2453
2454 if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num ||
2455 sbi->segs_per_sec != 1) {
2456 f2fs_msg(sbi->sb, KERN_WARNING,
2457 "Can't flush %u in %d for segs_per_sec %u != 1\n",
2458 range.dev_num, sbi->s_ndevs,
2459 sbi->segs_per_sec);
2460 return -EINVAL;
2461 }
2462
2463 ret = mnt_want_write_file(filp);
2464 if (ret)
2465 return ret;
2466
2467 if (range.dev_num != 0)
2468 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2469 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2470
2471 start_segno = sm->last_victim[FLUSH_DEVICE];
2472 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2473 start_segno = dev_start_segno;
2474 end_segno = min(start_segno + range.segments, dev_end_segno);
2475
2476 while (start_segno < end_segno) {
2477 if (!mutex_trylock(&sbi->gc_mutex)) {
2478 ret = -EBUSY;
2479 goto out;
2480 }
2481 sm->last_victim[GC_CB] = end_segno + 1;
2482 sm->last_victim[GC_GREEDY] = end_segno + 1;
2483 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2484 ret = f2fs_gc(sbi, true, true, start_segno);
2485 if (ret == -EAGAIN)
2486 ret = 0;
2487 else if (ret < 0)
2488 break;
2489 start_segno++;
2490 }
2491out:
2492 mnt_drop_write_file(filp);
2493 return ret;
2494}
2495
e65ef207
JK		 2496static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2497{
2498 struct inode *inode = file_inode(filp);
2499 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2500
2501 /* Must validate to set it with SQLite behavior in Android. */
2502 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2503
2504 return put_user(sb_feature, (u32 __user *)arg);
2505}
e066b83c 2506
2c1d0305
CY		 2507#ifdef CONFIG_QUOTA
2508static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2509{
2510 struct inode *inode = file_inode(filp);
2511 struct f2fs_inode_info *fi = F2FS_I(inode);
2512 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2513 struct super_block *sb = sbi->sb;
2514 struct dquot *transfer_to[MAXQUOTAS] = {};
2515 struct page *ipage;
2516 kprojid_t kprojid;
2517 int err;
2518
2519 if (!f2fs_sb_has_project_quota(sb)) {
2520 if (projid != F2FS_DEF_PROJID)
2521 return -EOPNOTSUPP;
2522 else
2523 return 0;
2524 }
2525
2526 if (!f2fs_has_extra_attr(inode))
2527 return -EOPNOTSUPP;
2528
2529 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2530
2531 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2532 return 0;
2533
2534 err = mnt_want_write_file(filp);
2535 if (err)
2536 return err;
2537
2538 err = -EPERM;
2539 inode_lock(inode);
2540
2541 /* Is it quota file? Do not allow user to mess with it */
2542 if (IS_NOQUOTA(inode))
2543 goto out_unlock;
2544
2545 ipage = get_node_page(sbi, inode->i_ino);
2546 if (IS_ERR(ipage)) {
2547 err = PTR_ERR(ipage);
2548 goto out_unlock;
2549 }
2550
2551 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2552 i_projid)) {
2553 err = -EOVERFLOW;
2554 f2fs_put_page(ipage, 1);
2555 goto out_unlock;
2556 }
2557 f2fs_put_page(ipage, 1);
2558
2559 dquot_initialize(inode);
2560
2561 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2562 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2563 err = __dquot_transfer(inode, transfer_to);
2564 dqput(transfer_to[PRJQUOTA]);
2565 if (err)
2566 goto out_dirty;
2567 }
2568
2569 F2FS_I(inode)->i_projid = kprojid;
2570 inode->i_ctime = current_time(inode);
2571out_dirty:
2572 f2fs_mark_inode_dirty_sync(inode, true);
2573out_unlock:
2574 inode_unlock(inode);
2575 mnt_drop_write_file(filp);
2576 return err;
2577}
2578#else
2579static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2580{
2581 if (projid != F2FS_DEF_PROJID)
2582 return -EOPNOTSUPP;
2583 return 0;
2584}
2585#endif
2586
2587/* Transfer internal flags to xflags */
2588static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags)
2589{
2590 __u32 xflags = 0;
2591
2592 if (iflags & FS_SYNC_FL)
2593 xflags |= FS_XFLAG_SYNC;
2594 if (iflags & FS_IMMUTABLE_FL)
2595 xflags |= FS_XFLAG_IMMUTABLE;
2596 if (iflags & FS_APPEND_FL)
2597 xflags |= FS_XFLAG_APPEND;
2598 if (iflags & FS_NODUMP_FL)
2599 xflags |= FS_XFLAG_NODUMP;
2600 if (iflags & FS_NOATIME_FL)
2601 xflags |= FS_XFLAG_NOATIME;
2602 if (iflags & FS_PROJINHERIT_FL)
2603 xflags |= FS_XFLAG_PROJINHERIT;
2604 return xflags;
2605}
2606
2607#define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \
2608 FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \
2609 FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT)
2610
2611/* Flags we can manipulate with through EXT4_IOC_FSSETXATTR */
2612#define F2FS_FL_XFLAG_VISIBLE (FS_SYNC_FL | \
2613 FS_IMMUTABLE_FL | \
2614 FS_APPEND_FL | \
2615 FS_NODUMP_FL | \
2616 FS_NOATIME_FL | \
2617 FS_PROJINHERIT_FL)
2618
2619/* Transfer xflags flags to internal */
2620static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags)
2621{
2622 unsigned long iflags = 0;
2623
2624 if (xflags & FS_XFLAG_SYNC)
2625 iflags |= FS_SYNC_FL;
2626 if (xflags & FS_XFLAG_IMMUTABLE)
2627 iflags |= FS_IMMUTABLE_FL;
2628 if (xflags & FS_XFLAG_APPEND)
2629 iflags |= FS_APPEND_FL;
2630 if (xflags & FS_XFLAG_NODUMP)
2631 iflags |= FS_NODUMP_FL;
2632 if (xflags & FS_XFLAG_NOATIME)
2633 iflags |= FS_NOATIME_FL;
2634 if (xflags & FS_XFLAG_PROJINHERIT)
2635 iflags |= FS_PROJINHERIT_FL;
2636
2637 return iflags;
2638}
2639
2640static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
2641{
2642 struct inode *inode = file_inode(filp);
2643 struct f2fs_inode_info *fi = F2FS_I(inode);
2644 struct fsxattr fa;
2645
2646 memset(&fa, 0, sizeof(struct fsxattr));
2647 fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags &
2648 (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL));
2649
2650 if (f2fs_sb_has_project_quota(inode->i_sb))
2651 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
2652 fi->i_projid);
2653
2654 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2655 return -EFAULT;
2656 return 0;
2657}
2658
2659static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
2660{
2661 struct inode *inode = file_inode(filp);
2662 struct f2fs_inode_info *fi = F2FS_I(inode);
2663 struct fsxattr fa;
2664 unsigned int flags;
2665 int err;
2666
2667 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
2668 return -EFAULT;
2669
2670 /* Make sure caller has proper permission */
2671 if (!inode_owner_or_capable(inode))
2672 return -EACCES;
2673
2674 if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS)
2675 return -EOPNOTSUPP;
2676
2677 flags = f2fs_xflags_to_iflags(fa.fsx_xflags);
2678 if (f2fs_mask_flags(inode->i_mode, flags) != flags)
2679 return -EOPNOTSUPP;
2680
2681 err = mnt_want_write_file(filp);
2682 if (err)
2683 return err;
2684
2685 inode_lock(inode);
2686 flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) |
2687 (flags & F2FS_FL_XFLAG_VISIBLE);
2688 err = __f2fs_ioc_setflags(inode, flags);
2689 inode_unlock(inode);
2690 mnt_drop_write_file(filp);
2691 if (err)
2692 return err;
2693
2694 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
2695 if (err)
2696 return err;
2697
2698 return 0;
2699}
e066b83c 2700
1ad71a27
JK		 2701int f2fs_pin_file_control(struct inode *inode, bool inc)
2702{
2703 struct f2fs_inode_info *fi = F2FS_I(inode);
2704 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2705
2706 /* Use i_gc_failures for normal file as a risk signal. */
2707 if (inc)
2708 f2fs_i_gc_failures_write(inode, fi->i_gc_failures + 1);
2709
2710 if (fi->i_gc_failures > sbi->gc_pin_file_threshold) {
2711 f2fs_msg(sbi->sb, KERN_WARNING,
2712 "%s: Enable GC = ino %lx after %x GC trials\n",
2713 __func__, inode->i_ino, fi->i_gc_failures);
2714 clear_inode_flag(inode, FI_PIN_FILE);
2715 return -EAGAIN;
2716 }
2717 return 0;
2718}
2719
2720static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
2721{
2722 struct inode *inode = file_inode(filp);
2723 __u32 pin;
2724 int ret = 0;
2725
2726 if (!inode_owner_or_capable(inode))
2727 return -EACCES;
2728
2729 if (get_user(pin, (__u32 __user *)arg))
2730 return -EFAULT;
2731
2732 if (!S_ISREG(inode->i_mode))
2733 return -EINVAL;
2734
2735 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
2736 return -EROFS;
2737
2738 ret = mnt_want_write_file(filp);
2739 if (ret)
2740 return ret;
2741
2742 inode_lock(inode);
2743
bb9e3bb8
CY		 2744 if (should_update_outplace(inode, NULL)) {
2745 ret = -EINVAL;
2746 goto out;
2747 }
2748
1ad71a27
JK		 2749 if (!pin) {
2750 clear_inode_flag(inode, FI_PIN_FILE);
2751 F2FS_I(inode)->i_gc_failures = 1;
2752 goto done;
2753 }
2754
2755 if (f2fs_pin_file_control(inode, false)) {
2756 ret = -EAGAIN;
2757 goto out;
2758 }
2759 ret = f2fs_convert_inline_inode(inode);
2760 if (ret)
2761 goto out;
2762
2763 set_inode_flag(inode, FI_PIN_FILE);
2764 ret = F2FS_I(inode)->i_gc_failures;
2765done:
2766 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2767out:
2768 inode_unlock(inode);
2769 mnt_drop_write_file(filp);
2770 return ret;
2771}
2772
2773static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
2774{
2775 struct inode *inode = file_inode(filp);
2776 __u32 pin = 0;
2777
2778 if (is_inode_flag_set(inode, FI_PIN_FILE))
2779 pin = F2FS_I(inode)->i_gc_failures;
2780 return put_user(pin, (u32 __user *)arg);
2781}
2782
c4020b2d
CY		 2783int f2fs_precache_extents(struct inode *inode)
2784{
2785 struct f2fs_inode_info *fi = F2FS_I(inode);
2786 struct f2fs_map_blocks map;
2787 pgoff_t m_next_extent;
2788 loff_t end;
2789 int err;
2790
2791 if (is_inode_flag_set(inode, FI_NO_EXTENT))
2792 return -EOPNOTSUPP;
2793
2794 map.m_lblk = 0;
2795 map.m_next_pgofs = NULL;
2796 map.m_next_extent = &m_next_extent;
2797 map.m_seg_type = NO_CHECK_TYPE;
2798 end = F2FS_I_SB(inode)->max_file_blocks;
2799
2800 while (map.m_lblk < end) {
2801 map.m_len = end - map.m_lblk;
2802
2803 down_write(&fi->dio_rwsem[WRITE]);
2804 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
2805 up_write(&fi->dio_rwsem[WRITE]);
2806 if (err)
2807 return err;
2808
2809 map.m_lblk = m_next_extent;
2810 }
2811
2812 return err;
2813}
2814
2815static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
2816{
2817 return f2fs_precache_extents(file_inode(filp));
2818}
2819
52656e6c
JK		 2820long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2821{
1f227a3e
JK		 2822 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
2823 return -EIO;
2824
52656e6c
JK		 2825 switch (cmd) {
2826 case F2FS_IOC_GETFLAGS:
2827 return f2fs_ioc_getflags(filp, arg);
2828 case F2FS_IOC_SETFLAGS:
2829 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 2830 case F2FS_IOC_GETVERSION:
2831 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 2832 case F2FS_IOC_START_ATOMIC_WRITE:
2833 return f2fs_ioc_start_atomic_write(filp);
2834 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2835 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 2836 case F2FS_IOC_START_VOLATILE_WRITE:
2837 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 2838 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2839 return f2fs_ioc_release_volatile_write(filp);
2840 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2841 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 2842 case F2FS_IOC_SHUTDOWN:
2843 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 2844 case FITRIM:
2845 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 2846 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2847 return f2fs_ioc_set_encryption_policy(filp, arg);
2848 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2849 return f2fs_ioc_get_encryption_policy(filp, arg);
2850 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2851 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
c1c1b583
CY		 2852 case F2FS_IOC_GARBAGE_COLLECT:
2853 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 2854 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
2855 return f2fs_ioc_gc_range(filp, arg);
456b88e4
CY		 2856 case F2FS_IOC_WRITE_CHECKPOINT:
2857 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 2858 case F2FS_IOC_DEFRAGMENT:
2859 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 2860 case F2FS_IOC_MOVE_RANGE:
2861 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 2862 case F2FS_IOC_FLUSH_DEVICE:
2863 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 2864 case F2FS_IOC_GET_FEATURES:
2865 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 2866 case F2FS_IOC_FSGETXATTR:
2867 return f2fs_ioc_fsgetxattr(filp, arg);
2868 case F2FS_IOC_FSSETXATTR:
2869 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 2870 case F2FS_IOC_GET_PIN_FILE:
2871 return f2fs_ioc_get_pin_file(filp, arg);
2872 case F2FS_IOC_SET_PIN_FILE:
2873 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 2874 case F2FS_IOC_PRECACHE_EXTENTS:
2875 return f2fs_ioc_precache_extents(filp, arg);
fbfa2cc5
JK		 2876 default:
2877 return -ENOTTY;
2878 }
2879}
2880
fcc85a4d
JK		 2881static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
2882{
b439b103
JK		 2883 struct file *file = iocb->ki_filp;
2884 struct inode *inode = file_inode(file);
9dfa1baf 2885 struct blk_plug plug;
b439b103 2886 ssize_t ret;
fcc85a4d 2887
1f227a3e
JK		 2888 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
2889 return -EIO;
2890
b439b103
JK		 2891 inode_lock(inode);
2892 ret = generic_write_checks(iocb, from);
2893 if (ret > 0) {
dc91de78 2894 int err;
a7de6086 2895
dc91de78
JK		 2896 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
2897 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 2898
dc91de78 2899 err = f2fs_preallocate_blocks(iocb, from);
a7de6086 2900 if (err) {
28cfafb7 2901 clear_inode_flag(inode, FI_NO_PREALLOC);
a7de6086
JK		 2902 inode_unlock(inode);
2903 return err;
9dfa1baf 2904 }
a7de6086
JK		 2905 blk_start_plug(&plug);
2906 ret = __generic_file_write_iter(iocb, from);
2907 blk_finish_plug(&plug);
dc91de78 2908 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49
CY		 2909
2910 if (ret > 0)
2911 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 2912 }
2913 inode_unlock(inode);
2914
e2592217
CH		 2915 if (ret > 0)
2916 ret = generic_write_sync(iocb, ret);
b439b103 2917 return ret;
fcc85a4d
JK		 2918}
2919
e9750824
NJ		 2920#ifdef CONFIG_COMPAT
2921long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2922{
2923 switch (cmd) {
2924 case F2FS_IOC32_GETFLAGS:
2925 cmd = F2FS_IOC_GETFLAGS;
2926 break;
2927 case F2FS_IOC32_SETFLAGS:
2928 cmd = F2FS_IOC_SETFLAGS;
2929 break;
04ef4b62
CY		 2930 case F2FS_IOC32_GETVERSION:
2931 cmd = F2FS_IOC_GETVERSION;
2932 break;
2933 case F2FS_IOC_START_ATOMIC_WRITE:
2934 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2935 case F2FS_IOC_START_VOLATILE_WRITE:
2936 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2937 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2938 case F2FS_IOC_SHUTDOWN:
2939 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2940 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2941 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2942 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 2943 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 2944 case F2FS_IOC_WRITE_CHECKPOINT:
2945 case F2FS_IOC_DEFRAGMENT:
4dd6f977 2946 case F2FS_IOC_MOVE_RANGE:
e066b83c 2947 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 2948 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 2949 case F2FS_IOC_FSGETXATTR:
2950 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 2951 case F2FS_IOC_GET_PIN_FILE:
2952 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 2953 case F2FS_IOC_PRECACHE_EXTENTS:
4dd6f977 2954 break;
e9750824
NJ		 2955 default:
2956 return -ENOIOCTLCMD;
2957 }
2958 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
2959}
2960#endif
2961
fbfa2cc5 2962const struct file_operations f2fs_file_operations = {
267378d4 2963 .llseek = f2fs_llseek,
aad4f8bb 2964 .read_iter = generic_file_read_iter,
fcc85a4d
JK		 2965 .write_iter = f2fs_file_write_iter,
2966 .open = f2fs_file_open,
12662234 2967 .release = f2fs_release_file,
fbfa2cc5 2968 .mmap = f2fs_file_mmap,
7a10f017 2969 .flush = f2fs_file_flush,
fbfa2cc5
JK		 2970 .fsync = f2fs_sync_file,
2971 .fallocate = f2fs_fallocate,
2972 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 2973#ifdef CONFIG_COMPAT
2974 .compat_ioctl = f2fs_compat_ioctl,
2975#endif
fbfa2cc5 2976 .splice_read = generic_file_splice_read,
8d020765 2977 .splice_write = iter_file_splice_write,
fbfa2cc5 2978};
Linux 6.x block layer and io_uring tree(s)