projects / linux-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
f2fs: use generic checking and prep function for FS_IOC_SETFLAGS
[linux-block.git] / fs / f2fs / file.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
fbfa2cc5
JK		 3 * fs/f2fs/file.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
fbfa2cc5
JK		 7 */
8#include <linux/fs.h>
9#include <linux/f2fs_fs.h>
10#include <linux/stat.h>
11#include <linux/buffer_head.h>
12#include <linux/writeback.h>
ae51fb31 13#include <linux/blkdev.h>
fbfa2cc5
JK		 14#include <linux/falloc.h>
15#include <linux/types.h>
e9750824 16#include <linux/compat.h>
fbfa2cc5
JK		 17#include <linux/uaccess.h>
18#include <linux/mount.h>
7f7670fe 19#include <linux/pagevec.h>
dc91de78 20#include <linux/uio.h>
8da4b8c4 21#include <linux/uuid.h>
4dd6f977 22#include <linux/file.h>
fbfa2cc5
JK		 23
24#include "f2fs.h"
25#include "node.h"
26#include "segment.h"
27#include "xattr.h"
28#include "acl.h"
c1c1b583 29#include "gc.h"
db9f7c1a 30#include "trace.h"
a2a4a7e4 31#include <trace/events/f2fs.h>
fbfa2cc5 32
ea4d479b 33static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
5a3a2d83
QS		 34{
35 struct inode *inode = file_inode(vmf->vma->vm_file);
ea4d479b 36 vm_fault_t ret;
5a3a2d83
QS		 37
38 down_read(&F2FS_I(inode)->i_mmap_sem);
ea4d479b 39 ret = filemap_fault(vmf);
5a3a2d83
QS		 40 up_read(&F2FS_I(inode)->i_mmap_sem);
41
d7648343
CY		 42 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
43
ea4d479b 44 return ret;
5a3a2d83
QS		 45}
46
ea4d479b 47static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
fbfa2cc5
JK		 48{
49 struct page *page = vmf->page;
11bac800 50 struct inode *inode = file_inode(vmf->vma->vm_file);
4081363f 51 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
39a86958 52 struct dnode_of_data dn = { .node_changed = false };
e479556b 53 int err;
fbfa2cc5 54
1f227a3e
JK		 55 if (unlikely(f2fs_cp_error(sbi))) {
56 err = -EIO;
57 goto err;
58 }
59
fbfa2cc5 60 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 61
62 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 63
11bac800 64 file_update_time(vmf->vma->vm_file);
5a3a2d83 65 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 66 lock_page(page);
6bacf52f 67 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 68 page_offset(page) > i_size_read(inode) ||
6bacf52f 69 !PageUptodate(page))) {
fbfa2cc5
JK		 70 unlock_page(page);
71 err = -EFAULT;
5a3a2d83 72 goto out_sem;
fbfa2cc5
JK		 73 }
74
39a86958
CY		 75 /* block allocation */
76 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
77 set_new_dnode(&dn, inode, NULL, NULL, 0);
78 err = f2fs_get_block(&dn, page->index);
79 f2fs_put_dnode(&dn);
80 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
81 if (err) {
82 unlock_page(page);
83 goto out_sem;
84 }
85
86 /* fill the page */
bae0ee7a 87 f2fs_wait_on_page_writeback(page, DATA, false, true);
39a86958
CY		 88
89 /* wait for GCed page writeback via META_MAPPING */
90 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
91
fbfa2cc5
JK		 92 /*
93 * check to see if the page is mapped already (no holes)
94 */
95 if (PageMappedToDisk(page))
39a86958 96 goto out_sem;
fbfa2cc5
JK		 97
98 /* page is wholly or partially inside EOF */
09cbfeaf 99 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 100 i_size_read(inode)) {
193bea1d 101 loff_t offset;
f11e98bd 102
09cbfeaf
KS		 103 offset = i_size_read(inode) & ~PAGE_MASK;
104 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 105 }
106 set_page_dirty(page);
237c0790
JK		 107 if (!PageUptodate(page))
108 SetPageUptodate(page);
fbfa2cc5 109
b0af6d49 110 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
c75f2feb 111 f2fs_update_time(sbi, REQ_TIME);
b0af6d49 112
e943a10d 113 trace_f2fs_vm_page_mkwrite(page, DATA);
5a3a2d83
QS		 114out_sem:
115 up_read(&F2FS_I(inode)->i_mmap_sem);
39a86958
CY		 116
117 f2fs_balance_fs(sbi, dn.node_changed);
118
fbfa2cc5 119 sb_end_pagefault(inode->i_sb);
1f227a3e 120err:
fbfa2cc5
JK		 121 return block_page_mkwrite_return(err);
122}
123
124static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 125 .fault = f2fs_filemap_fault,
f1820361 126 .map_pages = filemap_map_pages,
692bb55d 127 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 128};
129
354a3399
JK		 130static int get_parent_ino(struct inode *inode, nid_t *pino)
131{
132 struct dentry *dentry;
133
134 inode = igrab(inode);
135 dentry = d_find_any_alias(inode);
136 iput(inode);
137 if (!dentry)
138 return 0;
139
f0947e5c
JK		 140 *pino = parent_ino(dentry);
141 dput(dentry);
354a3399
JK		 142 return 1;
143}
144
a5fd5050 145static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 146{
4081363f 147 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 148 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 149
a5fd5050
CY		 150 if (!S_ISREG(inode->i_mode))
151 cp_reason = CP_NON_REGULAR;
152 else if (inode->i_nlink != 1)
153 cp_reason = CP_HARDLINK;
bbf156f7 154 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 155 cp_reason = CP_SB_NEED_CP;
9d1589ef 156 else if (file_wrong_pino(inode))
a5fd5050 157 cp_reason = CP_WRONG_PINO;
4d57b86d 158 else if (!f2fs_space_for_roll_forward(sbi))
a5fd5050 159 cp_reason = CP_NO_SPC_ROLL;
4d57b86d 160 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 161 cp_reason = CP_NODE_NEED_CP;
d5053a34 162 else if (test_opt(sbi, FASTBOOT))
a5fd5050 163 cp_reason = CP_FASTBOOT_MODE;
63189b78 164 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 165 cp_reason = CP_SPEC_LOG_NUM;
63189b78 166 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
4d57b86d
CY		 167 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
168 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
169 TRANS_DIR_INO))
0a007b97 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 */
4d57b86d 180 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
9c7bb702
CL		 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 };
50fa53ec 213 unsigned int seq_id = 0;
fbfa2cc5 214
4354994f
DR		 215 if (unlikely(f2fs_readonly(inode->i_sb) ||
216 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1fa95b0b
NJ		 217 return 0;
218
a2a4a7e4 219 trace_f2fs_sync_file_enter(inode);
ea1aa12c 220
b61ac5b7
YH		 221 if (S_ISDIR(inode->i_mode))
222 goto go_write;
223
ea1aa12c 224 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 225 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 226 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 227 ret = file_write_and_wait_range(file, start, end);
91942321 228 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 229
a2a4a7e4 230 if (ret) {
a5fd5050 231 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 232 return ret;
a2a4a7e4 233 }
fbfa2cc5 234
9c7bb702 235 /* if the inode is dirty, let's recover all the time */
281518c6 236 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 237 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 238 goto go_write;
239 }
240
6d99ba41
JK		 241 /*
242 * if there is no written data, don't waste time to write recovery info.
243 */
91942321 244 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
4d57b86d 245 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 246
9c7bb702
CL		 247 /* it may call write_inode just prior to fsync */
248 if (need_inode_page_update(sbi, ino))
19c9c466 249 goto go_write;
19c9c466 250
91942321 251 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
4d57b86d 252 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 253 goto flush_out;
254 goto out;
255 }
19c9c466 256go_write:
e5d2385e
JK		 257 /*
258 * Both of fdatasync() and fsync() are able to be recovered from
259 * sudden-power-off.
260 */
91942321 261 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 262 cp_reason = need_do_checkpoint(inode);
91942321 263 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 264
a5fd5050 265 if (cp_reason) {
fbfa2cc5
JK		 266 /* all the dirty node pages should be flushed for POR */
267 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 268
51455b19
CL		 269 /*
270 * We've secured consistency through sync_fs. Following pino
271 * will be used only for fsynced inodes after checkpoint.
272 */
273 try_to_fix_pino(inode);
91942321
JK		 274 clear_inode_flag(inode, FI_APPEND_WRITE);
275 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 276 goto out;
277 }
88bd02c9 278sync_nodes:
c29fd0c0 279 atomic_inc(&sbi->wb_sync_req[NODE]);
50fa53ec 280 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
c29fd0c0 281 atomic_dec(&sbi->wb_sync_req[NODE]);
c267ec15
JK		 282 if (ret)
283 goto out;
51455b19 284
871f599f 285 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 286 if (unlikely(f2fs_cp_error(sbi))) {
287 ret = -EIO;
871f599f 288 goto out;
6d5a1495 289 }
871f599f 290
4d57b86d 291 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 292 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 293 f2fs_write_inode(inode, NULL);
294 goto sync_nodes;
fbfa2cc5 295 }
51455b19 296
b6a245eb
JK		 297 /*
298 * If it's atomic_write, it's just fine to keep write ordering. So
299 * here we don't need to wait for node write completion, since we use
300 * node chain which serializes node blocks. If one of node writes are
301 * reordered, we can see simply broken chain, resulting in stopping
302 * roll-forward recovery. It means we'll recover all or none node blocks
303 * given fsync mark.
304 */
305 if (!atomic) {
50fa53ec 306 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
b6a245eb
JK		 307 if (ret)
308 goto out;
309 }
51455b19
CL		 310
311 /* once recovery info is written, don't need to tack this */
4d57b86d 312 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 313 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 314flush_out:
d6290814 315 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 316 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 317 if (!ret) {
4d57b86d 318 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 319 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 320 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 321 }
d0239e1b 322 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 323out:
a5fd5050 324 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 325 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 326 return ret;
327}
328
608514de
JK		 329int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
330{
1f227a3e
JK		 331 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
332 return -EIO;
608514de
JK		 333 return f2fs_do_sync_file(file, start, end, datasync, false);
334}
335
7f7670fe
JK		 336static pgoff_t __get_first_dirty_index(struct address_space *mapping,
337 pgoff_t pgofs, int whence)
338{
8faab642 339 struct page *page;
7f7670fe
JK		 340 int nr_pages;
341
342 if (whence != SEEK_DATA)
343 return 0;
344
345 /* find first dirty page index */
8faab642
JK		 346 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
347 1, &page);
348 if (!nr_pages)
349 return ULONG_MAX;
350 pgofs = page->index;
351 put_page(page);
7f7670fe
JK		 352 return pgofs;
353}
354
e1da7872
CY		 355static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
356 pgoff_t dirty, pgoff_t pgofs, int whence)
7f7670fe
JK		 357{
358 switch (whence) {
359 case SEEK_DATA:
360 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
93770ab7 361 __is_valid_data_blkaddr(blkaddr))
7f7670fe
JK		 362 return true;
363 break;
364 case SEEK_HOLE:
365 if (blkaddr == NULL_ADDR)
366 return true;
367 break;
368 }
369 return false;
370}
371
267378d4
CY		 372static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
373{
374 struct inode *inode = file->f_mapping->host;
375 loff_t maxbytes = inode->i_sb->s_maxbytes;
376 struct dnode_of_data dn;
7f7670fe
JK		 377 pgoff_t pgofs, end_offset, dirty;
378 loff_t data_ofs = offset;
379 loff_t isize;
267378d4
CY		 380 int err = 0;
381
5955102c 382 inode_lock(inode);
267378d4
CY		 383
384 isize = i_size_read(inode);
385 if (offset >= isize)
386 goto fail;
387
388 /* handle inline data case */
622f28ae 389 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 390 if (whence == SEEK_HOLE)
391 data_ofs = isize;
392 goto found;
393 }
394
09cbfeaf 395 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 396
7f7670fe
JK		 397 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
398
09cbfeaf 399 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 400 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 401 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 402 if (err && err != -ENOENT) {
403 goto fail;
404 } else if (err == -ENOENT) {
e1c42045 405 /* direct node does not exists */
267378d4 406 if (whence == SEEK_DATA) {
4d57b86d 407 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 408 continue;
409 } else {
410 goto found;
411 }
412 }
413
81ca7350 414 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 415
416 /* find data/hole in dnode block */
417 for (; dn.ofs_in_node < end_offset;
418 dn.ofs_in_node++, pgofs++,
09cbfeaf 419 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 420 block_t blkaddr;
f11e98bd 421
7a2af766
CY		 422 blkaddr = datablock_addr(dn.inode,
423 dn.node_page, dn.ofs_in_node);
267378d4 424
c9b60788
CY		 425 if (__is_valid_data_blkaddr(blkaddr) &&
426 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
93770ab7 427 blkaddr, DATA_GENERIC_ENHANCE)) {
c9b60788
CY		 428 f2fs_put_dnode(&dn);
429 goto fail;
430 }
431
e1da7872
CY		 432 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
433 pgofs, whence)) {
267378d4
CY		 434 f2fs_put_dnode(&dn);
435 goto found;
436 }
437 }
438 f2fs_put_dnode(&dn);
439 }
440
441 if (whence == SEEK_DATA)
442 goto fail;
267378d4 443found:
fe369bc8
JK		 444 if (whence == SEEK_HOLE && data_ofs > isize)
445 data_ofs = isize;
5955102c 446 inode_unlock(inode);
267378d4
CY		 447 return vfs_setpos(file, data_ofs, maxbytes);
448fail:
5955102c 449 inode_unlock(inode);
267378d4
CY		 450 return -ENXIO;
451}
452
453static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
454{
455 struct inode *inode = file->f_mapping->host;
456 loff_t maxbytes = inode->i_sb->s_maxbytes;
457
458 switch (whence) {
459 case SEEK_SET:
460 case SEEK_CUR:
461 case SEEK_END:
462 return generic_file_llseek_size(file, offset, whence,
463 maxbytes, i_size_read(inode));
464 case SEEK_DATA:
465 case SEEK_HOLE:
0b4c5afd
JK		 466 if (offset < 0)
467 return -ENXIO;
267378d4
CY		 468 return f2fs_seek_block(file, offset, whence);
469 }
470
471 return -EINVAL;
472}
473
fbfa2cc5
JK		 474static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
475{
b3d208f9 476 struct inode *inode = file_inode(file);
b9d777b8 477 int err;
b3d208f9 478
1f227a3e
JK		 479 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
480 return -EIO;
481
b3d208f9 482 /* we don't need to use inline_data strictly */
b9d777b8
JK		 483 err = f2fs_convert_inline_inode(inode);
484 if (err)
485 return err;
b3d208f9 486
fbfa2cc5
JK		 487 file_accessed(file);
488 vma->vm_ops = &f2fs_file_vm_ops;
489 return 0;
490}
491
fcc85a4d
JK		 492static int f2fs_file_open(struct inode *inode, struct file *filp)
493{
2e168c82 494 int err = fscrypt_file_open(inode, filp);
fcc85a4d 495
2e168c82
EB		 496 if (err)
497 return err;
b91050a8
HL		 498
499 filp->f_mode |= FMODE_NOWAIT;
500
0abd675e 501 return dquot_file_open(inode, filp);
fcc85a4d
JK		 502}
503
4d57b86d 504void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 505{
4081363f 506 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 507 struct f2fs_node *raw_node;
19b2c30d 508 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 509 __le32 *addr;
7a2af766
CY		 510 int base = 0;
511
512 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
513 base = get_extra_isize(dn->inode);
fbfa2cc5 514
45590710 515 raw_node = F2FS_NODE(dn->node_page);
7a2af766 516 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 517
6c311ec6 518 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
fbfa2cc5 519 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 520
fbfa2cc5
JK		 521 if (blkaddr == NULL_ADDR)
522 continue;
523
e1509cf2 524 dn->data_blkaddr = NULL_ADDR;
4d57b86d 525 f2fs_set_data_blkaddr(dn);
c9b60788
CY		 526
527 if (__is_valid_data_blkaddr(blkaddr) &&
93770ab7
CY		 528 !f2fs_is_valid_blkaddr(sbi, blkaddr,
529 DATA_GENERIC_ENHANCE))
c9b60788
CY		 530 continue;
531
4d57b86d 532 f2fs_invalidate_blocks(sbi, blkaddr);
3c6c2beb 533 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 534 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
fbfa2cc5
JK		 535 nr_free++;
536 }
19b2c30d 537
fbfa2cc5 538 if (nr_free) {
19b2c30d
CY		 539 pgoff_t fofs;
540 /*
541 * once we invalidate valid blkaddr in range [ofs, ofs + count],
542 * we will invalidate all blkaddr in the whole range.
543 */
4d57b86d 544 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 545 dn->inode) + ofs;
19b2c30d 546 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 547 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 548 }
549 dn->ofs_in_node = ofs;
51dd6249 550
d0239e1b 551 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 552 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
553 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 554}
555
4d57b86d 556void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 557{
d02a6e61 558 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
fbfa2cc5
JK		 559}
560
0bfcfcca 561static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 562 bool cache_only)
fbfa2cc5 563{
193bea1d 564 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 565 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 566 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 567 struct page *page;
568
43f3eae1 569 if (!offset && !cache_only)
b3d208f9 570 return 0;
fbfa2cc5 571
43f3eae1 572 if (cache_only) {
34b5d5c2 573 page = find_lock_page(mapping, index);
43f3eae1
JK		 574 if (page && PageUptodate(page))
575 goto truncate_out;
576 f2fs_put_page(page, 1);
b3d208f9 577 return 0;
43f3eae1 578 }
fbfa2cc5 579
4d57b86d 580 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 581 if (IS_ERR(page))
a78aaa2c 582 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 583truncate_out:
bae0ee7a 584 f2fs_wait_on_page_writeback(page, DATA, true, true);
09cbfeaf 585 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 586
587 /* An encrypted inode should have a key and truncate the last page. */
62230e0d 588 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
a9bcf9bc 589 if (!cache_only)
0bfcfcca 590 set_page_dirty(page);
fbfa2cc5 591 f2fs_put_page(page, 1);
b3d208f9 592 return 0;
fbfa2cc5
JK		 593}
594
c42d28ce 595int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 596{
4081363f 597 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 598 struct dnode_of_data dn;
599 pgoff_t free_from;
9ffe0fb5 600 int count = 0, err = 0;
b3d208f9 601 struct page *ipage;
0bfcfcca 602 bool truncate_page = false;
fbfa2cc5 603
51dd6249
NJ		 604 trace_f2fs_truncate_blocks_enter(inode, from);
605
df033caf 606 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 607
09210c97
CY		 608 if (free_from >= sbi->max_file_blocks)
609 goto free_partial;
610
764aa3e9 611 if (lock)
c42d28ce 612 f2fs_lock_op(sbi);
9ffe0fb5 613
4d57b86d 614 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 615 if (IS_ERR(ipage)) {
616 err = PTR_ERR(ipage);
617 goto out;
618 }
619
620 if (f2fs_has_inline_data(inode)) {
4d57b86d 621 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 622 f2fs_put_page(ipage, 1);
0bfcfcca 623 truncate_page = true;
b3d208f9
JK		 624 goto out;
625 }
626
627 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 628 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 629 if (err) {
630 if (err == -ENOENT)
631 goto free_next;
b3d208f9 632 goto out;
1ce86bf6
JK		 633 }
634
81ca7350 635 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 636
637 count -= dn.ofs_in_node;
9850cf4a 638 f2fs_bug_on(sbi, count < 0);
39936837 639
fbfa2cc5 640 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 641 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 642 free_from += count;
643 }
644
645 f2fs_put_dnode(&dn);
646free_next:
4d57b86d 647 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 648out:
649 if (lock)
c42d28ce 650 f2fs_unlock_op(sbi);
09210c97 651free_partial:
b3d208f9
JK		 652 /* lastly zero out the first data page */
653 if (!err)
0bfcfcca 654 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 655
51dd6249 656 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 657 return err;
658}
659
9a449e9c 660int f2fs_truncate(struct inode *inode)
fbfa2cc5 661{
b0154891
CY		 662 int err;
663
1f227a3e
JK		 664 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
665 return -EIO;
666
fbfa2cc5
JK		 667 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
668 S_ISLNK(inode->i_mode)))
b0154891 669 return 0;
fbfa2cc5 670
51dd6249
NJ		 671 trace_f2fs_truncate(inode);
672
14b44d23
JK		 673 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
674 f2fs_show_injection_info(FAULT_TRUNCATE);
675 return -EIO;
676 }
7fa750a1 677
92dffd01 678 /* we should check inline_data size */
b9d777b8 679 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 680 err = f2fs_convert_inline_inode(inode);
681 if (err)
682 return err;
92dffd01
JK		 683 }
684
c42d28ce 685 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 686 if (err)
687 return err;
688
078cd827 689 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 690 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 691 return 0;
fbfa2cc5
JK		 692}
693
a528d35e 694int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 695 u32 request_mask, unsigned int query_flags)
fbfa2cc5 696{
a528d35e 697 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 698 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 699 struct f2fs_inode *ri;
1c6d8ee4
CY		 700 unsigned int flags;
701
1c1d35df 702 if (f2fs_has_extra_attr(inode) &&
7beb01f7 703 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
1c1d35df
CY		 704 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
705 stat->result_mask |= STATX_BTIME;
706 stat->btime.tv_sec = fi->i_crtime.tv_sec;
707 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
708 }
709
36098557 710 flags = fi->i_flags;
59c84408 711 if (flags & F2FS_APPEND_FL)
1c6d8ee4 712 stat->attributes |= STATX_ATTR_APPEND;
62230e0d 713 if (IS_ENCRYPTED(inode))
1c6d8ee4 714 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 715 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 716 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 717 if (flags & F2FS_NODUMP_FL)
1c6d8ee4
CY		 718 stat->attributes |= STATX_ATTR_NODUMP;
719
720 stat->attributes_mask |= (STATX_ATTR_APPEND |
1c6d8ee4
CY		 721 STATX_ATTR_ENCRYPTED |
722 STATX_ATTR_IMMUTABLE |
723 STATX_ATTR_NODUMP);
724
fbfa2cc5 725 generic_fillattr(inode, stat);
5b4267d1
JK		 726
727 /* we need to show initial sectors used for inline_data/dentries */
728 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
729 f2fs_has_inline_dentry(inode))
730 stat->blocks += (stat->size + 511) >> 9;
731
fbfa2cc5
JK		 732 return 0;
733}
734
735#ifdef CONFIG_F2FS_FS_POSIX_ACL
736static void __setattr_copy(struct inode *inode, const struct iattr *attr)
737{
fbfa2cc5
JK		 738 unsigned int ia_valid = attr->ia_valid;
739
740 if (ia_valid & ATTR_UID)
741 inode->i_uid = attr->ia_uid;
742 if (ia_valid & ATTR_GID)
743 inode->i_gid = attr->ia_gid;
744 if (ia_valid & ATTR_ATIME)
95582b00
DD		 745 inode->i_atime = timespec64_trunc(attr->ia_atime,
746 inode->i_sb->s_time_gran);
fbfa2cc5 747 if (ia_valid & ATTR_MTIME)
95582b00
DD		 748 inode->i_mtime = timespec64_trunc(attr->ia_mtime,
749 inode->i_sb->s_time_gran);
fbfa2cc5 750 if (ia_valid & ATTR_CTIME)
95582b00
DD		 751 inode->i_ctime = timespec64_trunc(attr->ia_ctime,
752 inode->i_sb->s_time_gran);
fbfa2cc5
JK		 753 if (ia_valid & ATTR_MODE) {
754 umode_t mode = attr->ia_mode;
755
756 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
757 mode &= ~S_ISGID;
91942321 758 set_acl_inode(inode, mode);
fbfa2cc5
JK		 759 }
760}
761#else
762#define __setattr_copy setattr_copy
763#endif
764
765int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
766{
2b0143b5 767 struct inode *inode = d_inode(dentry);
fbfa2cc5
JK		 768 int err;
769
1f227a3e
JK		 770 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
771 return -EIO;
772
31051c85 773 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 774 if (err)
775 return err;
776
20bb2479
EB		 777 err = fscrypt_prepare_setattr(dentry, attr);
778 if (err)
779 return err;
780
0abd675e
CY		 781 if (is_quota_modification(inode, attr)) {
782 err = dquot_initialize(inode);
783 if (err)
784 return err;
785 }
786 if ((attr->ia_valid & ATTR_UID &&
787 !uid_eq(attr->ia_uid, inode->i_uid)) ||
788 (attr->ia_valid & ATTR_GID &&
789 !gid_eq(attr->ia_gid, inode->i_gid))) {
af033b2a 790 f2fs_lock_op(F2FS_I_SB(inode));
0abd675e 791 err = dquot_transfer(inode, attr);
af033b2a
CY		 792 if (err) {
793 set_sbi_flag(F2FS_I_SB(inode),
794 SBI_QUOTA_NEED_REPAIR);
795 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e 796 return err;
af033b2a
CY		 797 }
798 /*
799 * update uid/gid under lock_op(), so that dquot and inode can
800 * be updated atomically.
801 */
802 if (attr->ia_valid & ATTR_UID)
803 inode->i_uid = attr->ia_uid;
804 if (attr->ia_valid & ATTR_GID)
805 inode->i_gid = attr->ia_gid;
806 f2fs_mark_inode_dirty_sync(inode, true);
807 f2fs_unlock_op(F2FS_I_SB(inode));
0abd675e
CY		 808 }
809
09db6a2e 810 if (attr->ia_valid & ATTR_SIZE) {
a33c1502
CY		 811 bool to_smaller = (attr->ia_size <= i_size_read(inode));
812
a33c1502 813 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 814 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502
CY		 815
816 truncate_setsize(inode, attr->ia_size);
817
818 if (to_smaller)
9a449e9c 819 err = f2fs_truncate(inode);
a33c1502
CY		 820 /*
821 * do not trim all blocks after i_size if target size is
822 * larger than i_size.
823 */
a33c1502 824 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 825 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
a33c1502
CY		 826
827 if (err)
828 return err;
0cab80ee 829
a33c1502 830 if (!to_smaller) {
0cab80ee 831 /* should convert inline inode here */
b9d777b8 832 if (!f2fs_may_inline_data(inode)) {
0cab80ee
CY		 833 err = f2fs_convert_inline_inode(inode);
834 if (err)
835 return err;
836 }
078cd827 837 inode->i_mtime = inode->i_ctime = current_time(inode);
09db6a2e 838 }
c0ed4405 839
a0d00fad
CY		 840 down_write(&F2FS_I(inode)->i_sem);
841 F2FS_I(inode)->last_disk_size = i_size_read(inode);
842 up_write(&F2FS_I(inode)->i_sem);
fbfa2cc5
JK		 843 }
844
845 __setattr_copy(inode, attr);
846
847 if (attr->ia_valid & ATTR_MODE) {
4d57b86d 848 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
91942321
JK		 849 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
850 inode->i_mode = F2FS_I(inode)->i_acl_mode;
851 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 852 }
853 }
854
c0ed4405 855 /* file size may changed here */
ca597bdd 856 f2fs_mark_inode_dirty_sync(inode, true);
15d04354
JK		 857
858 /* inode change will produce dirty node pages flushed by checkpoint */
859 f2fs_balance_fs(F2FS_I_SB(inode), true);
860
fbfa2cc5
JK		 861 return err;
862}
863
864const struct inode_operations f2fs_file_inode_operations = {
865 .getattr = f2fs_getattr,
866 .setattr = f2fs_setattr,
867 .get_acl = f2fs_get_acl,
a6dda0e6 868 .set_acl = f2fs_set_acl,
fbfa2cc5 869#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 870 .listxattr = f2fs_listxattr,
fbfa2cc5 871#endif
9ab70134 872 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 873};
874
6394328a 875static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 876 loff_t start, loff_t len)
877{
4081363f 878 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 879 struct page *page;
880
881 if (!len)
6394328a 882 return 0;
fbfa2cc5 883
2c4db1a6 884 f2fs_balance_fs(sbi, true);
bd43df02 885
e479556b 886 f2fs_lock_op(sbi);
4d57b86d 887 page = f2fs_get_new_data_page(inode, NULL, index, false);
e479556b 888 f2fs_unlock_op(sbi);
fbfa2cc5 889
6394328a
CY		 890 if (IS_ERR(page))
891 return PTR_ERR(page);
892
bae0ee7a 893 f2fs_wait_on_page_writeback(page, DATA, true, true);
6394328a
CY		 894 zero_user(page, start, len);
895 set_page_dirty(page);
896 f2fs_put_page(page, 1);
897 return 0;
fbfa2cc5
JK		 898}
899
4d57b86d 900int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
fbfa2cc5 901{
fbfa2cc5
JK		 902 int err;
903
ea58711e 904 while (pg_start < pg_end) {
fbfa2cc5 905 struct dnode_of_data dn;
ea58711e 906 pgoff_t end_offset, count;
9eaeba70 907
fbfa2cc5 908 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 909 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 910 if (err) {
ea58711e 911 if (err == -ENOENT) {
4d57b86d
CY		 912 pg_start = f2fs_get_next_page_offset(&dn,
913 pg_start);
fbfa2cc5 914 continue;
ea58711e 915 }
fbfa2cc5
JK		 916 return err;
917 }
918
81ca7350 919 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 920 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
921
922 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
923
4d57b86d 924 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5 925 f2fs_put_dnode(&dn);
ea58711e
CY		 926
927 pg_start += count;
fbfa2cc5
JK		 928 }
929 return 0;
930}
931
a66c7b2f 932static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 933{
934 pgoff_t pg_start, pg_end;
935 loff_t off_start, off_end;
b9d777b8 936 int ret;
fbfa2cc5 937
b9d777b8
JK		 938 ret = f2fs_convert_inline_inode(inode);
939 if (ret)
940 return ret;
9ffe0fb5 941
09cbfeaf
KS		 942 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
943 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 944
09cbfeaf
KS		 945 off_start = offset & (PAGE_SIZE - 1);
946 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 947
948 if (pg_start == pg_end) {
6394328a 949 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 950 off_end - off_start);
6394328a
CY		 951 if (ret)
952 return ret;
fbfa2cc5 953 } else {
6394328a
CY		 954 if (off_start) {
955 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 956 PAGE_SIZE - off_start);
6394328a
CY		 957 if (ret)
958 return ret;
959 }
960 if (off_end) {
961 ret = fill_zero(inode, pg_end, 0, off_end);
962 if (ret)
963 return ret;
964 }
fbfa2cc5
JK		 965
966 if (pg_start < pg_end) {
967 struct address_space *mapping = inode->i_mapping;
968 loff_t blk_start, blk_end;
4081363f 969 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 970
2c4db1a6 971 f2fs_balance_fs(sbi, true);
fbfa2cc5 972
09cbfeaf
KS		 973 blk_start = (loff_t)pg_start << PAGE_SHIFT;
974 blk_end = (loff_t)pg_end << PAGE_SHIFT;
a33c1502 975
a33c1502 976 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 977 down_write(&F2FS_I(inode)->i_mmap_sem);
a33c1502 978
fbfa2cc5
JK		 979 truncate_inode_pages_range(mapping, blk_start,
980 blk_end - 1);
39936837 981
e479556b 982 f2fs_lock_op(sbi);
4d57b86d 983 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
e479556b 984 f2fs_unlock_op(sbi);
a33c1502 985
5a3a2d83 986 up_write(&F2FS_I(inode)->i_mmap_sem);
6f8d4455 987 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
fbfa2cc5
JK		 988 }
989 }
990
fbfa2cc5
JK		 991 return ret;
992}
993
0a2aa8fb
JK		 994static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
995 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 996{
997 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
998 struct dnode_of_data dn;
0a2aa8fb 999 int ret, done, i;
ecbaa406 1000
0a2aa8fb 1001next_dnode:
6e2c64ad 1002 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1003 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 1004 if (ret && ret != -ENOENT) {
1005 return ret;
1006 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 1007 if (dn.max_level == 0)
1008 return -ENOENT;
d02a6e61
CY		 1009 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) - dn.ofs_in_node,
1010 len);
0a2aa8fb
JK		 1011 blkaddr += done;
1012 do_replace += done;
1013 goto next;
1014 }
1015
1016 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1017 dn.ofs_in_node, len);
1018 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 1019 *blkaddr = datablock_addr(dn.inode,
1020 dn.node_page, dn.ofs_in_node);
93770ab7
CY		 1021
1022 if (__is_valid_data_blkaddr(*blkaddr) &&
1023 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1024 DATA_GENERIC_ENHANCE)) {
1025 f2fs_put_dnode(&dn);
10f966bb 1026 return -EFSCORRUPTED;
93770ab7
CY		 1027 }
1028
4d57b86d 1029 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb
JK		 1030
1031 if (test_opt(sbi, LFS)) {
1032 f2fs_put_dnode(&dn);
1033 return -ENOTSUPP;
1034 }
1035
6e2c64ad 1036 /* do not invalidate this block address */
f28b3434 1037 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 1038 *do_replace = 1;
b4ace337 1039 }
6e2c64ad 1040 }
0a2aa8fb
JK		 1041 f2fs_put_dnode(&dn);
1042next:
1043 len -= done;
1044 off += done;
1045 if (len)
1046 goto next_dnode;
1047 return 0;
1048}
b4ace337 1049
0a2aa8fb
JK		 1050static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1051 int *do_replace, pgoff_t off, int len)
1052{
1053 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1054 struct dnode_of_data dn;
1055 int ret, i;
b4ace337 1056
0a2aa8fb
JK		 1057 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1058 if (*do_replace == 0)
1059 continue;
b4ace337 1060
0a2aa8fb 1061 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1062 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1063 if (ret) {
1064 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1065 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1066 } else {
1067 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1068 }
0a2aa8fb
JK		 1069 f2fs_put_dnode(&dn);
1070 }
1071 return 0;
1072}
1073
1074static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1075 block_t *blkaddr, int *do_replace,
1076 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1077{
1078 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1079 pgoff_t i = 0;
1080 int ret;
36abef4e 1081
0a2aa8fb
JK		 1082 while (i < len) {
1083 if (blkaddr[i] == NULL_ADDR && !full) {
1084 i++;
1085 continue;
6e2c64ad 1086 }
b4ace337 1087
0a2aa8fb
JK		 1088 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1089 struct dnode_of_data dn;
1090 struct node_info ni;
1091 size_t new_size;
1092 pgoff_t ilen;
b4ace337 1093
0a2aa8fb 1094 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1095 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1096 if (ret)
1097 return ret;
b4ace337 1098
7735730d
CY		 1099 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1100 if (ret) {
1101 f2fs_put_dnode(&dn);
1102 return ret;
1103 }
1104
0a2aa8fb
JK		 1105 ilen = min((pgoff_t)
1106 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1107 dn.ofs_in_node, len - i);
1108 do {
7a2af766
CY		 1109 dn.data_blkaddr = datablock_addr(dn.inode,
1110 dn.node_page, dn.ofs_in_node);
4d57b86d 1111 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1112
1113 if (do_replace[i]) {
1114 f2fs_i_blocks_write(src_inode,
0abd675e 1115 1, false, false);
0a2aa8fb 1116 f2fs_i_blocks_write(dst_inode,
0abd675e 1117 1, true, false);
0a2aa8fb
JK		 1118 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1119 blkaddr[i], ni.version, true, false);
1120
1121 do_replace[i] = 0;
1122 }
1123 dn.ofs_in_node++;
1124 i++;
1125 new_size = (dst + i) << PAGE_SHIFT;
1126 if (dst_inode->i_size < new_size)
1127 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1128 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1129
0a2aa8fb
JK		 1130 f2fs_put_dnode(&dn);
1131 } else {
1132 struct page *psrc, *pdst;
1133
4d57b86d
CY		 1134 psrc = f2fs_get_lock_data_page(src_inode,
1135 src + i, true);
0a2aa8fb
JK		 1136 if (IS_ERR(psrc))
1137 return PTR_ERR(psrc);
4d57b86d 1138 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1139 true);
1140 if (IS_ERR(pdst)) {
1141 f2fs_put_page(psrc, 1);
1142 return PTR_ERR(pdst);
1143 }
1144 f2fs_copy_page(psrc, pdst);
1145 set_page_dirty(pdst);
1146 f2fs_put_page(pdst, 1);
6e2c64ad 1147 f2fs_put_page(psrc, 1);
b4ace337 1148
4d57b86d
CY		 1149 ret = f2fs_truncate_hole(src_inode,
1150 src + i, src + i + 1);
0a2aa8fb
JK		 1151 if (ret)
1152 return ret;
1153 i++;
1154 }
6e2c64ad
JK		 1155 }
1156 return 0;
0a2aa8fb 1157}
b4ace337 1158
0a2aa8fb
JK		 1159static int __exchange_data_block(struct inode *src_inode,
1160 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1161 pgoff_t len, bool full)
0a2aa8fb
JK		 1162{
1163 block_t *src_blkaddr;
1164 int *do_replace;
363cad7f 1165 pgoff_t olen;
0a2aa8fb
JK		 1166 int ret;
1167
363cad7f 1168 while (len) {
d02a6e61 1169 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
0a2aa8fb 1170
628b3d14 1171 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1172 array_size(olen, sizeof(block_t)),
1173 GFP_KERNEL);
363cad7f
JK		 1174 if (!src_blkaddr)
1175 return -ENOMEM;
0a2aa8fb 1176
628b3d14 1177 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1178 array_size(olen, sizeof(int)),
1179 GFP_KERNEL);
363cad7f
JK		 1180 if (!do_replace) {
1181 kvfree(src_blkaddr);
1182 return -ENOMEM;
1183 }
0a2aa8fb 1184
363cad7f
JK		 1185 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1186 do_replace, src, olen);
1187 if (ret)
1188 goto roll_back;
0a2aa8fb 1189
363cad7f
JK		 1190 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1191 do_replace, src, dst, olen, full);
1192 if (ret)
1193 goto roll_back;
1194
1195 src += olen;
1196 dst += olen;
1197 len -= olen;
1198
1199 kvfree(src_blkaddr);
1200 kvfree(do_replace);
1201 }
0a2aa8fb
JK		 1202 return 0;
1203
1204roll_back:
9fd62605 1205 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1206 kvfree(src_blkaddr);
1207 kvfree(do_replace);
6e2c64ad
JK		 1208 return ret;
1209}
b4ace337 1210
6f8d4455 1211static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
6e2c64ad
JK		 1212{
1213 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
f91108b8 1214 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
6f8d4455
JK		 1215 pgoff_t start = offset >> PAGE_SHIFT;
1216 pgoff_t end = (offset + len) >> PAGE_SHIFT;
0a2aa8fb 1217 int ret;
6e2c64ad 1218
0a2aa8fb 1219 f2fs_balance_fs(sbi, true);
5f281fab 1220
6f8d4455
JK		 1221 /* avoid gc operation during block exchange */
1222 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1223 down_write(&F2FS_I(inode)->i_mmap_sem);
5f281fab 1224
6f8d4455
JK		 1225 f2fs_lock_op(sbi);
1226 f2fs_drop_extent_tree(inode);
1227 truncate_pagecache(inode, offset);
0a2aa8fb
JK		 1228 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1229 f2fs_unlock_op(sbi);
6f8d4455
JK		 1230
1231 up_write(&F2FS_I(inode)->i_mmap_sem);
1232 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1233 return ret;
1234}
1235
1236static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1237{
b4ace337
CY		 1238 loff_t new_size;
1239 int ret;
1240
b4ace337
CY		 1241 if (offset + len >= i_size_read(inode))
1242 return -EINVAL;
1243
1244 /* collapse range should be aligned to block size of f2fs. */
1245 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1246 return -EINVAL;
1247
b9d777b8
JK		 1248 ret = f2fs_convert_inline_inode(inode);
1249 if (ret)
1250 return ret;
97a7b2c2 1251
b4ace337
CY		 1252 /* write out all dirty pages from offset */
1253 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1254 if (ret)
6f8d4455 1255 return ret;
b4ace337 1256
6f8d4455 1257 ret = f2fs_do_collapse(inode, offset, len);
b4ace337 1258 if (ret)
6f8d4455 1259 return ret;
b4ace337 1260
6e2c64ad 1261 /* write out all moved pages, if possible */
6f8d4455 1262 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1263 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1264 truncate_pagecache(inode, offset);
1265
b4ace337 1266 new_size = i_size_read(inode) - len;
6e2c64ad 1267 truncate_pagecache(inode, new_size);
b4ace337 1268
c42d28ce 1269 ret = f2fs_truncate_blocks(inode, new_size, true);
6f8d4455 1270 up_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337 1271 if (!ret)
fc9581c8 1272 f2fs_i_size_write(inode, new_size);
b4ace337
CY		 1273 return ret;
1274}
1275
6e961949
CY		 1276static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1277 pgoff_t end)
1278{
1279 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1280 pgoff_t index = start;
1281 unsigned int ofs_in_node = dn->ofs_in_node;
1282 blkcnt_t count = 0;
1283 int ret;
1284
1285 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1286 if (datablock_addr(dn->inode, dn->node_page,
1287 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1288 count++;
1289 }
1290
1291 dn->ofs_in_node = ofs_in_node;
4d57b86d 1292 ret = f2fs_reserve_new_blocks(dn, count);
6e961949
CY		 1293 if (ret)
1294 return ret;
1295
1296 dn->ofs_in_node = ofs_in_node;
1297 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1298 dn->data_blkaddr = datablock_addr(dn->inode,
1299 dn->node_page, dn->ofs_in_node);
6e961949 1300 /*
4d57b86d 1301 * f2fs_reserve_new_blocks will not guarantee entire block
6e961949
CY		 1302 * allocation.
1303 */
1304 if (dn->data_blkaddr == NULL_ADDR) {
1305 ret = -ENOSPC;
1306 break;
1307 }
1308 if (dn->data_blkaddr != NEW_ADDR) {
4d57b86d 1309 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
6e961949 1310 dn->data_blkaddr = NEW_ADDR;
4d57b86d 1311 f2fs_set_data_blkaddr(dn);
6e961949
CY		 1312 }
1313 }
1314
1315 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1316
1317 return ret;
1318}
1319
75cd4e09
CY		 1320static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1321 int mode)
1322{
1323 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1324 struct address_space *mapping = inode->i_mapping;
1325 pgoff_t index, pg_start, pg_end;
1326 loff_t new_size = i_size_read(inode);
1327 loff_t off_start, off_end;
1328 int ret = 0;
1329
75cd4e09
CY		 1330 ret = inode_newsize_ok(inode, (len + offset));
1331 if (ret)
1332 return ret;
1333
b9d777b8
JK		 1334 ret = f2fs_convert_inline_inode(inode);
1335 if (ret)
1336 return ret;
75cd4e09
CY		 1337
1338 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1339 if (ret)
6f8d4455 1340 return ret;
75cd4e09 1341
09cbfeaf
KS		 1342 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1343 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1344
09cbfeaf
KS		 1345 off_start = offset & (PAGE_SIZE - 1);
1346 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1347
1348 if (pg_start == pg_end) {
6394328a
CY		 1349 ret = fill_zero(inode, pg_start, off_start,
1350 off_end - off_start);
1351 if (ret)
6f8d4455 1352 return ret;
6394328a 1353
75cd4e09
CY		 1354 new_size = max_t(loff_t, new_size, offset + len);
1355 } else {
1356 if (off_start) {
6394328a 1357 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1358 PAGE_SIZE - off_start);
6394328a 1359 if (ret)
6f8d4455 1360 return ret;
6394328a 1361
75cd4e09 1362 new_size = max_t(loff_t, new_size,
09cbfeaf 1363 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1364 }
1365
6e961949 1366 for (index = pg_start; index < pg_end;) {
75cd4e09 1367 struct dnode_of_data dn;
6e961949
CY		 1368 unsigned int end_offset;
1369 pgoff_t end;
75cd4e09 1370
c7079853 1371 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1372 down_write(&F2FS_I(inode)->i_mmap_sem);
c7079853
CY		 1373
1374 truncate_pagecache_range(inode,
1375 (loff_t)index << PAGE_SHIFT,
1376 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1377
75cd4e09
CY		 1378 f2fs_lock_op(sbi);
1379
6e961949 1380 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1381 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1382 if (ret) {
1383 f2fs_unlock_op(sbi);
6f8d4455 1384 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1385 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
75cd4e09
CY		 1386 goto out;
1387 }
1388
6e961949
CY		 1389 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1390 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1391
1392 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09 1393 f2fs_put_dnode(&dn);
c7079853 1394
75cd4e09 1395 f2fs_unlock_op(sbi);
6f8d4455 1396 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1397 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
9434fcde
CY		 1398
1399 f2fs_balance_fs(sbi, dn.node_changed);
1400
6e961949
CY		 1401 if (ret)
1402 goto out;
75cd4e09 1403
6e961949 1404 index = end;
75cd4e09 1405 new_size = max_t(loff_t, new_size,
6e961949 1406 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1407 }
1408
1409 if (off_end) {
6394328a
CY		 1410 ret = fill_zero(inode, pg_end, 0, off_end);
1411 if (ret)
1412 goto out;
1413
75cd4e09
CY		 1414 new_size = max_t(loff_t, new_size, offset + len);
1415 }
1416 }
1417
1418out:
17cd07ae
CY		 1419 if (new_size > i_size_read(inode)) {
1420 if (mode & FALLOC_FL_KEEP_SIZE)
1421 file_set_keep_isize(inode);
1422 else
1423 f2fs_i_size_write(inode, new_size);
1424 }
75cd4e09
CY		 1425 return ret;
1426}
1427
f62185d0
CY		 1428static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1429{
1430 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1431 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1432 loff_t new_size;
6e2c64ad 1433 int ret = 0;
f62185d0 1434
f62185d0 1435 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1436 ret = inode_newsize_ok(inode, new_size);
1437 if (ret)
1438 return ret;
f62185d0
CY		 1439
1440 if (offset >= i_size_read(inode))
1441 return -EINVAL;
1442
1443 /* insert range should be aligned to block size of f2fs. */
1444 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1445 return -EINVAL;
1446
b9d777b8
JK		 1447 ret = f2fs_convert_inline_inode(inode);
1448 if (ret)
1449 return ret;
97a7b2c2 1450
2c4db1a6 1451 f2fs_balance_fs(sbi, true);
2a340760 1452
5a3a2d83 1453 down_write(&F2FS_I(inode)->i_mmap_sem);
c42d28ce 1454 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
6f8d4455 1455 up_write(&F2FS_I(inode)->i_mmap_sem);
f62185d0 1456 if (ret)
6f8d4455 1457 return ret;
f62185d0
CY		 1458
1459 /* write out all dirty pages from offset */
1460 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1461 if (ret)
6f8d4455 1462 return ret;
f62185d0 1463
09cbfeaf
KS		 1464 pg_start = offset >> PAGE_SHIFT;
1465 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1466 delta = pg_end - pg_start;
f91108b8 1467 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
0a2aa8fb 1468
6f8d4455
JK		 1469 /* avoid gc operation during block exchange */
1470 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1471 down_write(&F2FS_I(inode)->i_mmap_sem);
1472 truncate_pagecache(inode, offset);
1473
0a2aa8fb
JK		 1474 while (!ret && idx > pg_start) {
1475 nr = idx - pg_start;
1476 if (nr > delta)
1477 nr = delta;
1478 idx -= nr;
f62185d0 1479
f62185d0 1480 f2fs_lock_op(sbi);
5f281fab
JK		 1481 f2fs_drop_extent_tree(inode);
1482
0a2aa8fb
JK		 1483 ret = __exchange_data_block(inode, inode, idx,
1484 idx + delta, nr, false);
f62185d0
CY		 1485 f2fs_unlock_op(sbi);
1486 }
6f8d4455
JK		 1487 up_write(&F2FS_I(inode)->i_mmap_sem);
1488 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f62185d0 1489
6e2c64ad 1490 /* write out all moved pages, if possible */
6f8d4455 1491 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1492 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1493 truncate_pagecache(inode, offset);
6f8d4455 1494 up_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1495
1496 if (!ret)
fc9581c8 1497 f2fs_i_size_write(inode, new_size);
f62185d0
CY		 1498 return ret;
1499}
1500
fbfa2cc5
JK		 1501static int expand_inode_data(struct inode *inode, loff_t offset,
1502 loff_t len, int mode)
1503{
4081363f 1504 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1505 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
f9d6d059
CY		 1506 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1507 .m_may_create = true };
e12dd7bd 1508 pgoff_t pg_end;
fbfa2cc5 1509 loff_t new_size = i_size_read(inode);
e12dd7bd 1510 loff_t off_end;
a7de6086 1511 int err;
fbfa2cc5 1512
a7de6086
JK		 1513 err = inode_newsize_ok(inode, (len + offset));
1514 if (err)
1515 return err;
fbfa2cc5 1516
a7de6086
JK		 1517 err = f2fs_convert_inline_inode(inode);
1518 if (err)
1519 return err;
9e09fc85 1520
2c4db1a6 1521 f2fs_balance_fs(sbi, true);
2a340760 1522
e12dd7bd 1523 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1524 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1525
e12dd7bd
JK		 1526 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1527 map.m_len = pg_end - map.m_lblk;
1528 if (off_end)
1529 map.m_len++;
ead43275 1530
cad3836f
JK		 1531 if (f2fs_is_pinned_file(inode))
1532 map.m_seg_type = CURSEG_COLD_DATA;
1533
1534 err = f2fs_map_blocks(inode, &map, 1, (f2fs_is_pinned_file(inode) ?
1535 F2FS_GET_BLOCK_PRE_DIO :
1536 F2FS_GET_BLOCK_PRE_AIO));
a7de6086 1537 if (err) {
e12dd7bd 1538 pgoff_t last_off;
fbfa2cc5 1539
e12dd7bd 1540 if (!map.m_len)
a7de6086 1541 return err;
98397ff3 1542
e12dd7bd
JK		 1543 last_off = map.m_lblk + map.m_len - 1;
1544
1545 /* update new size to the failed position */
1061fd48 1546 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1547 (loff_t)(last_off + 1) << PAGE_SHIFT;
1548 } else {
1549 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1550 }
1551
e8ed90a6
CY		 1552 if (new_size > i_size_read(inode)) {
1553 if (mode & FALLOC_FL_KEEP_SIZE)
1554 file_set_keep_isize(inode);
1555 else
1556 f2fs_i_size_write(inode, new_size);
1557 }
fbfa2cc5 1558
a7de6086 1559 return err;
fbfa2cc5
JK		 1560}
1561
1562static long f2fs_fallocate(struct file *file, int mode,
1563 loff_t offset, loff_t len)
1564{
6131ffaa 1565 struct inode *inode = file_inode(file);
587c0a42 1566 long ret = 0;
fbfa2cc5 1567
1f227a3e
JK		 1568 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1569 return -EIO;
1570
c998012b
CY		 1571 /* f2fs only support ->fallocate for regular file */
1572 if (!S_ISREG(inode->i_mode))
1573 return -EINVAL;
1574
62230e0d 1575 if (IS_ENCRYPTED(inode) &&
f62185d0 1576 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1577 return -EOPNOTSUPP;
1578
b4ace337 1579 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1580 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1581 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1582 return -EOPNOTSUPP;
1583
5955102c 1584 inode_lock(inode);
3375f696 1585
587c0a42
TY		 1586 if (mode & FALLOC_FL_PUNCH_HOLE) {
1587 if (offset >= inode->i_size)
1588 goto out;
1589
a66c7b2f 1590 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1591 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1592 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1593 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1594 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1595 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1596 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1597 } else {
fbfa2cc5 1598 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1599 }
fbfa2cc5 1600
3af60a49 1601 if (!ret) {
078cd827 1602 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1603 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1604 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1605 }
3375f696 1606
587c0a42 1607out:
5955102c 1608 inode_unlock(inode);
3375f696 1609
c01e2853 1610 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1611 return ret;
1612}
1613
1e84371f
JK		 1614static int f2fs_release_file(struct inode *inode, struct file *filp)
1615{
de5307e4
JK		 1616 /*
1617 * f2fs_relase_file is called at every close calls. So we should
1618 * not drop any inmemory pages by close called by other process.
1619 */
1620 if (!(filp->f_mode & FMODE_WRITE) ||
1621 atomic_read(&inode->i_writecount) != 1)
1622 return 0;
1623
1e84371f
JK		 1624 /* some remained atomic pages should discarded */
1625 if (f2fs_is_atomic_file(inode))
4d57b86d 1626 f2fs_drop_inmem_pages(inode);
1e84371f 1627 if (f2fs_is_volatile_file(inode)) {
91942321 1628 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1629 filemap_fdatawrite(inode->i_mapping);
91942321 1630 clear_inode_flag(inode, FI_DROP_CACHE);
dfa74280
CY		 1631 clear_inode_flag(inode, FI_VOLATILE_FILE);
1632 stat_dec_volatile_write(inode);
1e84371f
JK		 1633 }
1634 return 0;
1635}
1636
7a10f017 1637static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1638{
7a10f017
JK		 1639 struct inode *inode = file_inode(file);
1640
1641 /*
1642 * If the process doing a transaction is crashed, we should do
1643 * roll-back. Otherwise, other reader/write can see corrupted database
1644 * until all the writers close its file. Since this should be done
1645 * before dropping file lock, it needs to do in ->flush.
1646 */
1647 if (f2fs_is_atomic_file(inode) &&
1648 F2FS_I(inode)->inmem_task == current)
4d57b86d 1649 f2fs_drop_inmem_pages(inode);
7a10f017 1650 return 0;
fbfa2cc5
JK		 1651}
1652
36098557 1653static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
2c1d0305
CY		 1654{
1655 struct f2fs_inode_info *fi = F2FS_I(inode);
36098557 1656 u32 oldflags;
2c1d0305
CY		 1657
1658 /* Is it quota file? Do not allow user to mess with it */
1659 if (IS_NOQUOTA(inode))
1660 return -EPERM;
1661
2c1d0305
CY		 1662 oldflags = fi->i_flags;
1663
36098557 1664 if ((iflags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL))
2c1d0305
CY		 1665 if (!capable(CAP_LINUX_IMMUTABLE))
1666 return -EPERM;
1667
36098557 1668 fi->i_flags = iflags | (oldflags & ~mask);
2c1d0305 1669
59c84408 1670 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1671 set_inode_flag(inode, FI_PROJ_INHERIT);
1672 else
1673 clear_inode_flag(inode, FI_PROJ_INHERIT);
1674
1675 inode->i_ctime = current_time(inode);
1676 f2fs_set_inode_flags(inode);
b32e0190 1677 f2fs_mark_inode_dirty_sync(inode, true);
2c1d0305
CY		 1678 return 0;
1679}
1680
36098557
EB		 1681/* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1682
1683/*
1684 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1685 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1686 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1687 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1688 */
1689
1690static const struct {
1691 u32 iflag;
1692 u32 fsflag;
1693} f2fs_fsflags_map[] = {
1694 { F2FS_SYNC_FL, FS_SYNC_FL },
1695 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1696 { F2FS_APPEND_FL, FS_APPEND_FL },
1697 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1698 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1699 { F2FS_INDEX_FL, FS_INDEX_FL },
1700 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1701 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
1702};
1703
1704#define F2FS_GETTABLE_FS_FL ( \
1705 FS_SYNC_FL | \
1706 FS_IMMUTABLE_FL | \
1707 FS_APPEND_FL | \
1708 FS_NODUMP_FL | \
1709 FS_NOATIME_FL | \
1710 FS_INDEX_FL | \
1711 FS_DIRSYNC_FL | \
1712 FS_PROJINHERIT_FL | \
1713 FS_ENCRYPT_FL | \
1714 FS_INLINE_DATA_FL | \
1715 FS_NOCOW_FL)
1716
1717#define F2FS_SETTABLE_FS_FL ( \
1718 FS_SYNC_FL | \
1719 FS_IMMUTABLE_FL | \
1720 FS_APPEND_FL | \
1721 FS_NODUMP_FL | \
1722 FS_NOATIME_FL | \
1723 FS_DIRSYNC_FL | \
1724 FS_PROJINHERIT_FL)
1725
1726/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1727static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1728{
1729 u32 fsflags = 0;
1730 int i;
1731
1732 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1733 if (iflags & f2fs_fsflags_map[i].iflag)
1734 fsflags |= f2fs_fsflags_map[i].fsflag;
1735
1736 return fsflags;
1737}
1738
1739/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1740static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1741{
1742 u32 iflags = 0;
1743 int i;
1744
1745 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1746 if (fsflags & f2fs_fsflags_map[i].fsflag)
1747 iflags |= f2fs_fsflags_map[i].iflag;
1748
1749 return iflags;
1750}
1751
1752static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1753{
1754 struct inode *inode = file_inode(filp);
1755 struct f2fs_inode_info *fi = F2FS_I(inode);
1756 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1757
1758 if (IS_ENCRYPTED(inode))
1759 fsflags |= FS_ENCRYPT_FL;
1760 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1761 fsflags |= FS_INLINE_DATA_FL;
1762 if (is_inode_flag_set(inode, FI_PIN_FILE))
1763 fsflags |= FS_NOCOW_FL;
1764
1765 fsflags &= F2FS_GETTABLE_FS_FL;
1766
1767 return put_user(fsflags, (int __user *)arg);
1768}
1769
52656e6c
JK		 1770static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1771{
1772 struct inode *inode = file_inode(filp);
a1f32eec
EB		 1773 struct f2fs_inode_info *fi = F2FS_I(inode);
1774 u32 fsflags, old_fsflags;
36098557 1775 u32 iflags;
52656e6c 1776 int ret;
fbfa2cc5 1777
7fb17fe4
CY		 1778 if (!inode_owner_or_capable(inode))
1779 return -EACCES;
1780
36098557 1781 if (get_user(fsflags, (int __user *)arg))
7fb17fe4
CY		 1782 return -EFAULT;
1783
36098557
EB		 1784 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1785 return -EOPNOTSUPP;
1786 fsflags &= F2FS_SETTABLE_FS_FL;
1787
1788 iflags = f2fs_fsflags_to_iflags(fsflags);
1789 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1790 return -EOPNOTSUPP;
1791
52656e6c
JK		 1792 ret = mnt_want_write_file(filp);
1793 if (ret)
1794 return ret;
fbfa2cc5 1795
5955102c 1796 inode_lock(inode);
fbfa2cc5 1797
a1f32eec
EB		 1798 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1799 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1800 if (ret)
1801 goto out;
1802
36098557
EB		 1803 ret = f2fs_setflags_common(inode, iflags,
1804 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
a1f32eec 1805out:
a72d4b97 1806 inode_unlock(inode);
52656e6c
JK		 1807 mnt_drop_write_file(filp);
1808 return ret;
1809}
4b2fecc8 1810
d49f3e89
CY		 1811static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1812{
1813 struct inode *inode = file_inode(filp);
1814
1815 return put_user(inode->i_generation, (int __user *)arg);
1816}
1817
88b88a66
JK		 1818static int f2fs_ioc_start_atomic_write(struct file *filp)
1819{
1820 struct inode *inode = file_inode(filp);
f4c9c743 1821 int ret;
88b88a66
JK		 1822
1823 if (!inode_owner_or_capable(inode))
1824 return -EACCES;
1825
e811898c
JK		 1826 if (!S_ISREG(inode->i_mode))
1827 return -EINVAL;
1828
7fb17fe4
CY		 1829 ret = mnt_want_write_file(filp);
1830 if (ret)
1831 return ret;
1832
0fac558b
CY		 1833 inode_lock(inode);
1834
455e3a58
JK		 1835 if (f2fs_is_atomic_file(inode)) {
1836 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1837 ret = -EINVAL;
7fb17fe4 1838 goto out;
455e3a58 1839 }
88b88a66 1840
f4c9c743
CY		 1841 ret = f2fs_convert_inline_inode(inode);
1842 if (ret)
7fb17fe4 1843 goto out;
88b88a66 1844
6f8d4455
JK		 1845 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1846
31867b23
JK		 1847 /*
1848 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
1849 * f2fs_is_atomic_file.
1850 */
1851 if (get_dirty_pages(inode))
dcbb4c10
JP		 1852 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
1853 inode->i_ino, get_dirty_pages(inode));
c27753d6 1854 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
6f8d4455
JK		 1855 if (ret) {
1856 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 1857 goto out;
6f8d4455 1858 }
31867b23 1859
054afda9 1860 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1861 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
6f8d4455 1862 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 1863
6f8d4455 1864 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7a10f017 1865 F2FS_I(inode)->inmem_task = current;
26a28a0c
JK		 1866 stat_inc_atomic_write(inode);
1867 stat_update_max_atomic_write(inode);
684ca7e5 1868out:
0fac558b 1869 inode_unlock(inode);
7fb17fe4 1870 mnt_drop_write_file(filp);
c27753d6 1871 return ret;
88b88a66
JK		 1872}
1873
1874static int f2fs_ioc_commit_atomic_write(struct file *filp)
1875{
1876 struct inode *inode = file_inode(filp);
1877 int ret;
1878
1879 if (!inode_owner_or_capable(inode))
1880 return -EACCES;
1881
1882 ret = mnt_want_write_file(filp);
1883 if (ret)
1884 return ret;
1885
6f8d4455 1886 f2fs_balance_fs(F2FS_I_SB(inode), true);
0fac558b 1887
6f8d4455 1888 inode_lock(inode);
1dc0f899 1889
b169c3c5
CY		 1890 if (f2fs_is_volatile_file(inode)) {
1891 ret = -EINVAL;
7fb17fe4 1892 goto err_out;
b169c3c5 1893 }
7fb17fe4 1894
6282adbf 1895 if (f2fs_is_atomic_file(inode)) {
4d57b86d 1896 ret = f2fs_commit_inmem_pages(inode);
5fe45743 1897 if (ret)
edb27dee 1898 goto err_out;
5fe45743 1899
26a28a0c 1900 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
5fe45743
CY		 1901 if (!ret) {
1902 clear_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1903 F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
5fe45743 1904 stat_dec_atomic_write(inode);
447135a8 1905 }
26a28a0c 1906 } else {
774e1b78 1907 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 1908 }
edb27dee 1909err_out:
2ef79ecb
CY		 1910 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
1911 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1912 ret = -EINVAL;
1913 }
0fac558b 1914 inode_unlock(inode);
88b88a66
JK		 1915 mnt_drop_write_file(filp);
1916 return ret;
1917}
1918
02a1335f
JK		 1919static int f2fs_ioc_start_volatile_write(struct file *filp)
1920{
1921 struct inode *inode = file_inode(filp);
f4c9c743 1922 int ret;
02a1335f
JK		 1923
1924 if (!inode_owner_or_capable(inode))
1925 return -EACCES;
1926
8ff0971f
CY		 1927 if (!S_ISREG(inode->i_mode))
1928 return -EINVAL;
1929
7fb17fe4
CY		 1930 ret = mnt_want_write_file(filp);
1931 if (ret)
1932 return ret;
1933
0fac558b
CY		 1934 inode_lock(inode);
1935
1e84371f 1936 if (f2fs_is_volatile_file(inode))
7fb17fe4 1937 goto out;
1e84371f 1938
f4c9c743
CY		 1939 ret = f2fs_convert_inline_inode(inode);
1940 if (ret)
7fb17fe4 1941 goto out;
b3d208f9 1942
648d50ba
CY		 1943 stat_inc_volatile_write(inode);
1944 stat_update_max_volatile_write(inode);
1945
91942321 1946 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 1947 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1948out:
0fac558b 1949 inode_unlock(inode);
7fb17fe4
CY		 1950 mnt_drop_write_file(filp);
1951 return ret;
02a1335f
JK		 1952}
1953
1e84371f
JK		 1954static int f2fs_ioc_release_volatile_write(struct file *filp)
1955{
1956 struct inode *inode = file_inode(filp);
7fb17fe4 1957 int ret;
1e84371f
JK		 1958
1959 if (!inode_owner_or_capable(inode))
1960 return -EACCES;
1961
7fb17fe4
CY		 1962 ret = mnt_want_write_file(filp);
1963 if (ret)
1964 return ret;
1965
0fac558b
CY		 1966 inode_lock(inode);
1967
1e84371f 1968 if (!f2fs_is_volatile_file(inode))
7fb17fe4 1969 goto out;
1e84371f 1970
7fb17fe4
CY		 1971 if (!f2fs_is_first_block_written(inode)) {
1972 ret = truncate_partial_data_page(inode, 0, true);
1973 goto out;
1974 }
3c6c2beb 1975
7fb17fe4
CY		 1976 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1977out:
0fac558b 1978 inode_unlock(inode);
7fb17fe4
CY		 1979 mnt_drop_write_file(filp);
1980 return ret;
1e84371f
JK		 1981}
1982
1983static int f2fs_ioc_abort_volatile_write(struct file *filp)
1984{
1985 struct inode *inode = file_inode(filp);
1986 int ret;
1987
1988 if (!inode_owner_or_capable(inode))
1989 return -EACCES;
1990
1991 ret = mnt_want_write_file(filp);
1992 if (ret)
1993 return ret;
1994
0fac558b
CY		 1995 inode_lock(inode);
1996
26dc3d44 1997 if (f2fs_is_atomic_file(inode))
4d57b86d 1998 f2fs_drop_inmem_pages(inode);
732d5648 1999 if (f2fs_is_volatile_file(inode)) {
91942321 2000 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 2001 stat_dec_volatile_write(inode);
608514de 2002 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 2003 }
de6a8ec9 2004
455e3a58
JK		 2005 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2006
0fac558b
CY		 2007 inode_unlock(inode);
2008
1e84371f 2009 mnt_drop_write_file(filp);
d0239e1b 2010 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 2011 return ret;
2012}
2013
1abff93d
JK		 2014static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2015{
2016 struct inode *inode = file_inode(filp);
2017 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2018 struct super_block *sb = sbi->sb;
2019 __u32 in;
2a96d8ad 2020 int ret = 0;
1abff93d
JK		 2021
2022 if (!capable(CAP_SYS_ADMIN))
2023 return -EPERM;
2024
2025 if (get_user(in, (__u32 __user *)arg))
2026 return -EFAULT;
2027
60b2b4ee
ST		 2028 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2029 ret = mnt_want_write_file(filp);
2030 if (ret)
2031 return ret;
2032 }
7fb17fe4 2033
1abff93d
JK		 2034 switch (in) {
2035 case F2FS_GOING_DOWN_FULLSYNC:
2036 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 2037 if (IS_ERR(sb)) {
2038 ret = PTR_ERR(sb);
2039 goto out;
2040 }
2041 if (sb) {
38f91ca8 2042 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2043 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2044 thaw_bdev(sb->s_bdev, sb);
2045 }
2046 break;
2047 case F2FS_GOING_DOWN_METASYNC:
2048 /* do checkpoint only */
d027c484
CY		 2049 ret = f2fs_sync_fs(sb, 1);
2050 if (ret)
2051 goto out;
38f91ca8 2052 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2053 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 2054 break;
2055 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 2056 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2057 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d 2058 break;
c912a829 2059 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 2060 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 2061 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 2062 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
c912a829 2063 break;
0cd6d9b0
JK		 2064 case F2FS_GOING_DOWN_NEED_FSCK:
2065 set_sbi_flag(sbi, SBI_NEED_FSCK);
db610a64
JK		 2066 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2067 set_sbi_flag(sbi, SBI_IS_DIRTY);
0cd6d9b0
JK		 2068 /* do checkpoint only */
2069 ret = f2fs_sync_fs(sb, 1);
db610a64 2070 goto out;
1abff93d 2071 default:
7fb17fe4
CY		 2072 ret = -EINVAL;
2073 goto out;
1abff93d 2074 }
7950e9ac 2075
4d57b86d
CY		 2076 f2fs_stop_gc_thread(sbi);
2077 f2fs_stop_discard_thread(sbi);
7950e9ac 2078
4d57b86d 2079 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 2080 clear_opt(sbi, DISCARD);
2081
d0239e1b 2082 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 2083out:
60b2b4ee
ST		 2084 if (in != F2FS_GOING_DOWN_FULLSYNC)
2085 mnt_drop_write_file(filp);
559e87c4
CY		 2086
2087 trace_f2fs_shutdown(sbi, in, ret);
2088
7fb17fe4 2089 return ret;
1abff93d
JK		 2090}
2091
52656e6c
JK		 2092static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2093{
2094 struct inode *inode = file_inode(filp);
2095 struct super_block *sb = inode->i_sb;
2096 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2097 struct fstrim_range range;
2098 int ret;
4b2fecc8 2099
52656e6c
JK		 2100 if (!capable(CAP_SYS_ADMIN))
2101 return -EPERM;
4b2fecc8 2102
7d20c8ab 2103 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
52656e6c 2104 return -EOPNOTSUPP;
4b2fecc8 2105
52656e6c
JK		 2106 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2107 sizeof(range)))
2108 return -EFAULT;
4b2fecc8 2109
7fb17fe4
CY		 2110 ret = mnt_want_write_file(filp);
2111 if (ret)
2112 return ret;
2113
52656e6c
JK		 2114 range.minlen = max((unsigned int)range.minlen,
2115 q->limits.discard_granularity);
2116 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 2117 mnt_drop_write_file(filp);
52656e6c
JK		 2118 if (ret < 0)
2119 return ret;
4b2fecc8 2120
52656e6c
JK		 2121 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2122 sizeof(range)))
2123 return -EFAULT;
d0239e1b 2124 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 2125 return 0;
2126}
2127
f424f664
JK		 2128static bool uuid_is_nonzero(__u8 u[16])
2129{
2130 int i;
2131
2132 for (i = 0; i < 16; i++)
2133 if (u[i])
2134 return true;
2135 return false;
2136}
2137
2138static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2139{
f424f664
JK		 2140 struct inode *inode = file_inode(filp);
2141
7beb01f7 2142 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
ead710b7
CY		 2143 return -EOPNOTSUPP;
2144
d0239e1b 2145 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2146
db717d8e 2147 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 2148}
2149
2150static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2151{
7beb01f7 2152 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
ead710b7 2153 return -EOPNOTSUPP;
db717d8e 2154 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 2155}
2156
2157static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2158{
2159 struct inode *inode = file_inode(filp);
2160 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2161 int err;
2162
7beb01f7 2163 if (!f2fs_sb_has_encrypt(sbi))
f424f664
JK		 2164 return -EOPNOTSUPP;
2165
f424f664
JK		 2166 err = mnt_want_write_file(filp);
2167 if (err)
2168 return err;
2169
846ae671 2170 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2171
2172 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2173 goto got_it;
2174
f424f664
JK		 2175 /* update superblock with uuid */
2176 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2177
c5bda1c8 2178 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2179 if (err) {
2180 /* undo new data */
2181 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2182 goto out_err;
f424f664
JK		 2183 }
2184got_it:
2185 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2186 16))
d0d3f1b3
CY		 2187 err = -EFAULT;
2188out_err:
846ae671 2189 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2190 mnt_drop_write_file(filp);
2191 return err;
f424f664
JK		 2192}
2193
c1c1b583
CY		 2194static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2195{
2196 struct inode *inode = file_inode(filp);
2197 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2198 __u32 sync;
7fb17fe4 2199 int ret;
c1c1b583
CY		 2200
2201 if (!capable(CAP_SYS_ADMIN))
2202 return -EPERM;
2203
d530d4d8 2204 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2205 return -EFAULT;
2206
d530d4d8
CY		 2207 if (f2fs_readonly(sbi->sb))
2208 return -EROFS;
c1c1b583 2209
7fb17fe4
CY		 2210 ret = mnt_want_write_file(filp);
2211 if (ret)
2212 return ret;
2213
d530d4d8 2214 if (!sync) {
7fb17fe4
CY		 2215 if (!mutex_trylock(&sbi->gc_mutex)) {
2216 ret = -EBUSY;
2217 goto out;
2218 }
d530d4d8
CY		 2219 } else {
2220 mutex_lock(&sbi->gc_mutex);
c1c1b583
CY		 2221 }
2222
e066b83c 2223 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2224out:
2225 mnt_drop_write_file(filp);
2226 return ret;
c1c1b583
CY		 2227}
2228
34dc77ad
JK		 2229static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2230{
2231 struct inode *inode = file_inode(filp);
2232 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2233 struct f2fs_gc_range range;
2234 u64 end;
2235 int ret;
2236
2237 if (!capable(CAP_SYS_ADMIN))
2238 return -EPERM;
2239
2240 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2241 sizeof(range)))
2242 return -EFAULT;
2243
2244 if (f2fs_readonly(sbi->sb))
2245 return -EROFS;
2246
b82f6e34
YH		 2247 end = range.start + range.len;
2248 if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) {
2249 return -EINVAL;
2250 }
2251
34dc77ad
JK		 2252 ret = mnt_want_write_file(filp);
2253 if (ret)
2254 return ret;
2255
34dc77ad
JK		 2256do_more:
2257 if (!range.sync) {
2258 if (!mutex_trylock(&sbi->gc_mutex)) {
2259 ret = -EBUSY;
2260 goto out;
2261 }
2262 } else {
2263 mutex_lock(&sbi->gc_mutex);
2264 }
2265
2266 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
67b0e42b 2267 range.start += BLKS_PER_SEC(sbi);
34dc77ad
JK		 2268 if (range.start <= end)
2269 goto do_more;
2270out:
2271 mnt_drop_write_file(filp);
2272 return ret;
2273}
2274
059c0648 2275static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2276{
2277 struct inode *inode = file_inode(filp);
2278 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2279 int ret;
456b88e4
CY		 2280
2281 if (!capable(CAP_SYS_ADMIN))
2282 return -EPERM;
2283
2284 if (f2fs_readonly(sbi->sb))
2285 return -EROFS;
2286
4354994f 2287 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
dcbb4c10 2288 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
4354994f
DR		 2289 return -EINVAL;
2290 }
2291
7fb17fe4
CY		 2292 ret = mnt_want_write_file(filp);
2293 if (ret)
2294 return ret;
2295
2296 ret = f2fs_sync_fs(sbi->sb, 1);
2297
2298 mnt_drop_write_file(filp);
2299 return ret;
456b88e4
CY		 2300}
2301
d323d005
CY		 2302static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2303 struct file *filp,
2304 struct f2fs_defragment *range)
2305{
2306 struct inode *inode = file_inode(filp);
f3d98e74 2307 struct f2fs_map_blocks map = { .m_next_extent = NULL,
f4f0b677
JZ		 2308 .m_seg_type = NO_CHECK_TYPE ,
2309 .m_may_create = false };
1061fd48 2310 struct extent_info ei = {0, 0, 0};
f3d98e74 2311 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2312 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2313 unsigned int total = 0, sec_num;
d323d005
CY		 2314 block_t blk_end = 0;
2315 bool fragmented = false;
2316 int err;
2317
2318 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2319 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2320 return -EINVAL;
2321
09cbfeaf
KS		 2322 pg_start = range->start >> PAGE_SHIFT;
2323 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2324
2c4db1a6 2325 f2fs_balance_fs(sbi, true);
d323d005 2326
5955102c 2327 inode_lock(inode);
d323d005
CY		 2328
2329 /* writeback all dirty pages in the range */
2330 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2331 range->start + range->len - 1);
d323d005
CY		 2332 if (err)
2333 goto out;
2334
2335 /*
2336 * lookup mapping info in extent cache, skip defragmenting if physical
2337 * block addresses are continuous.
2338 */
2339 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2340 if (ei.fofs + ei.len >= pg_end)
2341 goto out;
2342 }
2343
2344 map.m_lblk = pg_start;
f3d98e74 2345 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2346
2347 /*
2348 * lookup mapping info in dnode page cache, skip defragmenting if all
2349 * physical block addresses are continuous even if there are hole(s)
2350 * in logical blocks.
2351 */
2352 while (map.m_lblk < pg_end) {
a1c1e9b7 2353 map.m_len = pg_end - map.m_lblk;
f2220c7f 2354 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2355 if (err)
2356 goto out;
2357
2358 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2359 map.m_lblk = next_pgofs;
d323d005
CY		 2360 continue;
2361 }
2362
25a912e5 2363 if (blk_end && blk_end != map.m_pblk)
d323d005 2364 fragmented = true;
25a912e5
CY		 2365
2366 /* record total count of block that we're going to move */
2367 total += map.m_len;
2368
d323d005
CY		 2369 blk_end = map.m_pblk + map.m_len;
2370
2371 map.m_lblk += map.m_len;
d323d005
CY		 2372 }
2373
2374 if (!fragmented)
2375 goto out;
2376
f91108b8 2377 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
d323d005
CY		 2378
2379 /*
2380 * make sure there are enough free section for LFS allocation, this can
2381 * avoid defragment running in SSR mode when free section are allocated
2382 * intensively
2383 */
7f3037a5 2384 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2385 err = -EAGAIN;
2386 goto out;
2387 }
2388
25a912e5
CY		 2389 map.m_lblk = pg_start;
2390 map.m_len = pg_end - pg_start;
2391 total = 0;
2392
d323d005
CY		 2393 while (map.m_lblk < pg_end) {
2394 pgoff_t idx;
2395 int cnt = 0;
2396
2397do_map:
a1c1e9b7 2398 map.m_len = pg_end - map.m_lblk;
f2220c7f 2399 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2400 if (err)
2401 goto clear_out;
2402
2403 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2404 map.m_lblk = next_pgofs;
d323d005
CY		 2405 continue;
2406 }
2407
91942321 2408 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2409
2410 idx = map.m_lblk;
2411 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2412 struct page *page;
2413
4d57b86d 2414 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2415 if (IS_ERR(page)) {
2416 err = PTR_ERR(page);
2417 goto clear_out;
2418 }
2419
2420 set_page_dirty(page);
2421 f2fs_put_page(page, 1);
2422
2423 idx++;
2424 cnt++;
2425 total++;
2426 }
2427
2428 map.m_lblk = idx;
d323d005
CY		 2429
2430 if (idx < pg_end && cnt < blk_per_seg)
2431 goto do_map;
2432
91942321 2433 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2434
2435 err = filemap_fdatawrite(inode->i_mapping);
2436 if (err)
2437 goto out;
2438 }
2439clear_out:
91942321 2440 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2441out:
5955102c 2442 inode_unlock(inode);
d323d005 2443 if (!err)
09cbfeaf 2444 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2445 return err;
2446}
2447
2448static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2449{
2450 struct inode *inode = file_inode(filp);
2451 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2452 struct f2fs_defragment range;
2453 int err;
2454
2455 if (!capable(CAP_SYS_ADMIN))
2456 return -EPERM;
2457
7eab0c0d 2458 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2459 return -EINVAL;
2460
d7563861
KM		 2461 if (f2fs_readonly(sbi->sb))
2462 return -EROFS;
d323d005
CY		 2463
2464 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2465 sizeof(range)))
2466 return -EFAULT;
d323d005
CY		 2467
2468 /* verify alignment of offset & size */
d7563861
KM		 2469 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2470 return -EINVAL;
d323d005 2471
1941d7bc 2472 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2473 sbi->max_file_blocks))
2474 return -EINVAL;
2475
2476 err = mnt_want_write_file(filp);
2477 if (err)
2478 return err;
1941d7bc 2479
d323d005 2480 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2481 mnt_drop_write_file(filp);
2482
d0239e1b 2483 f2fs_update_time(sbi, REQ_TIME);
d323d005 2484 if (err < 0)
d7563861 2485 return err;
d323d005
CY		 2486
2487 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2488 sizeof(range)))
d7563861
KM		 2489 return -EFAULT;
2490
2491 return 0;
d323d005
CY		 2492}
2493
4dd6f977
JK		 2494static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2495 struct file *file_out, loff_t pos_out, size_t len)
2496{
2497 struct inode *src = file_inode(file_in);
2498 struct inode *dst = file_inode(file_out);
2499 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2500 size_t olen = len, dst_max_i_size = 0;
2501 size_t dst_osize;
2502 int ret;
2503
2504 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2505 src->i_sb != dst->i_sb)
2506 return -EXDEV;
2507
2508 if (unlikely(f2fs_readonly(src->i_sb)))
2509 return -EROFS;
2510
fe8494bf
CY		 2511 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2512 return -EINVAL;
4dd6f977 2513
62230e0d 2514 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
4dd6f977
JK		 2515 return -EOPNOTSUPP;
2516
d95fd91c
FL		 2517 if (src == dst) {
2518 if (pos_in == pos_out)
2519 return 0;
2520 if (pos_out > pos_in && pos_out < pos_in + len)
2521 return -EINVAL;
2522 }
2523
4dd6f977 2524 inode_lock(src);
20a3d61d 2525 if (src != dst) {
bb06664a
CY		 2526 ret = -EBUSY;
2527 if (!inode_trylock(dst))
2528 goto out;
20a3d61d 2529 }
4dd6f977
JK		 2530
2531 ret = -EINVAL;
2532 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2533 goto out_unlock;
2534 if (len == 0)
2535 olen = len = src->i_size - pos_in;
2536 if (pos_in + len == src->i_size)
2537 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2538 if (len == 0) {
2539 ret = 0;
2540 goto out_unlock;
2541 }
2542
2543 dst_osize = dst->i_size;
2544 if (pos_out + olen > dst->i_size)
2545 dst_max_i_size = pos_out + olen;
2546
2547 /* verify the end result is block aligned */
2548 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2549 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2550 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2551 goto out_unlock;
2552
2553 ret = f2fs_convert_inline_inode(src);
2554 if (ret)
2555 goto out_unlock;
2556
2557 ret = f2fs_convert_inline_inode(dst);
2558 if (ret)
2559 goto out_unlock;
2560
2561 /* write out all dirty pages from offset */
2562 ret = filemap_write_and_wait_range(src->i_mapping,
2563 pos_in, pos_in + len);
2564 if (ret)
2565 goto out_unlock;
2566
2567 ret = filemap_write_and_wait_range(dst->i_mapping,
2568 pos_out, pos_out + len);
2569 if (ret)
2570 goto out_unlock;
2571
2572 f2fs_balance_fs(sbi, true);
6f8d4455
JK		 2573
2574 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2575 if (src != dst) {
2576 ret = -EBUSY;
2577 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2578 goto out_src;
2579 }
2580
4dd6f977 2581 f2fs_lock_op(sbi);
61e4da11
FL		 2582 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2583 pos_out >> F2FS_BLKSIZE_BITS,
2584 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2585
2586 if (!ret) {
2587 if (dst_max_i_size)
2588 f2fs_i_size_write(dst, dst_max_i_size);
2589 else if (dst_osize != dst->i_size)
2590 f2fs_i_size_write(dst, dst_osize);
2591 }
2592 f2fs_unlock_op(sbi);
6f8d4455
JK		 2593
2594 if (src != dst)
b2532c69 2595 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
6f8d4455
JK		 2596out_src:
2597 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2598out_unlock:
2599 if (src != dst)
4dd6f977 2600 inode_unlock(dst);
20a3d61d 2601out:
4dd6f977
JK		 2602 inode_unlock(src);
2603 return ret;
2604}
2605
2606static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2607{
2608 struct f2fs_move_range range;
2609 struct fd dst;
2610 int err;
2611
2612 if (!(filp->f_mode & FMODE_READ) ||
2613 !(filp->f_mode & FMODE_WRITE))
2614 return -EBADF;
2615
2616 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2617 sizeof(range)))
2618 return -EFAULT;
2619
2620 dst = fdget(range.dst_fd);
2621 if (!dst.file)
2622 return -EBADF;
2623
2624 if (!(dst.file->f_mode & FMODE_WRITE)) {
2625 err = -EBADF;
2626 goto err_out;
2627 }
2628
2629 err = mnt_want_write_file(filp);
2630 if (err)
2631 goto err_out;
2632
2633 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2634 range.pos_out, range.len);
2635
2636 mnt_drop_write_file(filp);
3cecfa5f
KM		 2637 if (err)
2638 goto err_out;
4dd6f977
JK		 2639
2640 if (copy_to_user((struct f2fs_move_range __user *)arg,
2641 &range, sizeof(range)))
2642 err = -EFAULT;
2643err_out:
2644 fdput(dst);
2645 return err;
2646}
2647
e066b83c
JK		 2648static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2649{
2650 struct inode *inode = file_inode(filp);
2651 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2652 struct sit_info *sm = SIT_I(sbi);
2653 unsigned int start_segno = 0, end_segno = 0;
2654 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2655 struct f2fs_flush_device range;
2656 int ret;
2657
2658 if (!capable(CAP_SYS_ADMIN))
2659 return -EPERM;
2660
2661 if (f2fs_readonly(sbi->sb))
2662 return -EROFS;
2663
4354994f
DR		 2664 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2665 return -EINVAL;
2666
e066b83c
JK		 2667 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2668 sizeof(range)))
2669 return -EFAULT;
2670
0916878d 2671 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2c70c5e3 2672 __is_large_section(sbi)) {
dcbb4c10
JP		 2673 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2674 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
e066b83c
JK		 2675 return -EINVAL;
2676 }
2677
2678 ret = mnt_want_write_file(filp);
2679 if (ret)
2680 return ret;
2681
2682 if (range.dev_num != 0)
2683 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2684 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2685
2686 start_segno = sm->last_victim[FLUSH_DEVICE];
2687 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2688 start_segno = dev_start_segno;
2689 end_segno = min(start_segno + range.segments, dev_end_segno);
2690
2691 while (start_segno < end_segno) {
2692 if (!mutex_trylock(&sbi->gc_mutex)) {
2693 ret = -EBUSY;
2694 goto out;
2695 }
2696 sm->last_victim[GC_CB] = end_segno + 1;
2697 sm->last_victim[GC_GREEDY] = end_segno + 1;
2698 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2699 ret = f2fs_gc(sbi, true, true, start_segno);
2700 if (ret == -EAGAIN)
2701 ret = 0;
2702 else if (ret < 0)
2703 break;
2704 start_segno++;
2705 }
2706out:
2707 mnt_drop_write_file(filp);
2708 return ret;
2709}
2710
e65ef207
JK		 2711static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2712{
2713 struct inode *inode = file_inode(filp);
2714 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2715
2716 /* Must validate to set it with SQLite behavior in Android. */
2717 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2718
2719 return put_user(sb_feature, (u32 __user *)arg);
2720}
e066b83c 2721
2c1d0305 2722#ifdef CONFIG_QUOTA
78130819
CY		 2723int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2724{
2725 struct dquot *transfer_to[MAXQUOTAS] = {};
2726 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2727 struct super_block *sb = sbi->sb;
2728 int err = 0;
2729
2730 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2731 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2732 err = __dquot_transfer(inode, transfer_to);
2733 if (err)
2734 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2735 dqput(transfer_to[PRJQUOTA]);
2736 }
2737 return err;
2738}
2739
2c1d0305
CY		 2740static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2741{
2742 struct inode *inode = file_inode(filp);
2743 struct f2fs_inode_info *fi = F2FS_I(inode);
2744 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2c1d0305
CY		 2745 struct page *ipage;
2746 kprojid_t kprojid;
2747 int err;
2748
7beb01f7 2749 if (!f2fs_sb_has_project_quota(sbi)) {
2c1d0305
CY		 2750 if (projid != F2FS_DEF_PROJID)
2751 return -EOPNOTSUPP;
2752 else
2753 return 0;
2754 }
2755
2756 if (!f2fs_has_extra_attr(inode))
2757 return -EOPNOTSUPP;
2758
2759 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2760
2761 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2762 return 0;
2763
2c1d0305 2764 err = -EPERM;
2c1d0305
CY		 2765 /* Is it quota file? Do not allow user to mess with it */
2766 if (IS_NOQUOTA(inode))
c8e92757 2767 return err;
2c1d0305 2768
4d57b86d 2769 ipage = f2fs_get_node_page(sbi, inode->i_ino);
c8e92757
WS		 2770 if (IS_ERR(ipage))
2771 return PTR_ERR(ipage);
2c1d0305
CY		 2772
2773 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2774 i_projid)) {
2775 err = -EOVERFLOW;
2776 f2fs_put_page(ipage, 1);
c8e92757 2777 return err;
2c1d0305
CY		 2778 }
2779 f2fs_put_page(ipage, 1);
2780
c22aecd7
CY		 2781 err = dquot_initialize(inode);
2782 if (err)
c8e92757 2783 return err;
2c1d0305 2784
78130819
CY		 2785 f2fs_lock_op(sbi);
2786 err = f2fs_transfer_project_quota(inode, kprojid);
2787 if (err)
2788 goto out_unlock;
2c1d0305
CY		 2789
2790 F2FS_I(inode)->i_projid = kprojid;
2791 inode->i_ctime = current_time(inode);
2c1d0305 2792 f2fs_mark_inode_dirty_sync(inode, true);
78130819
CY		 2793out_unlock:
2794 f2fs_unlock_op(sbi);
2c1d0305
CY		 2795 return err;
2796}
2797#else
78130819
CY		 2798int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2799{
2800 return 0;
2801}
2802
2c1d0305
CY		 2803static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2804{
2805 if (projid != F2FS_DEF_PROJID)
2806 return -EOPNOTSUPP;
2807 return 0;
2808}
2809#endif
2810
36098557
EB		 2811/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
2812
2813/*
2814 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
2815 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
2816 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
2817 */
2818
2819static const struct {
2820 u32 iflag;
2821 u32 xflag;
2822} f2fs_xflags_map[] = {
2823 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
2824 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
2825 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
2826 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
2827 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
2828 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
2829};
2830
2831#define F2FS_SUPPORTED_XFLAGS ( \
2832 FS_XFLAG_SYNC | \
2833 FS_XFLAG_IMMUTABLE | \
2834 FS_XFLAG_APPEND | \
2835 FS_XFLAG_NODUMP | \
2836 FS_XFLAG_NOATIME | \
2837 FS_XFLAG_PROJINHERIT)
2838
2839/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
2840static inline u32 f2fs_iflags_to_xflags(u32 iflags)
2841{
2842 u32 xflags = 0;
2843 int i;
2844
2845 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
2846 if (iflags & f2fs_xflags_map[i].iflag)
2847 xflags |= f2fs_xflags_map[i].xflag;
2848
2c1d0305
CY		 2849 return xflags;
2850}
2851
36098557
EB		 2852/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
2853static inline u32 f2fs_xflags_to_iflags(u32 xflags)
2c1d0305 2854{
36098557
EB		 2855 u32 iflags = 0;
2856 int i;
2c1d0305 2857
36098557
EB		 2858 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
2859 if (xflags & f2fs_xflags_map[i].xflag)
2860 iflags |= f2fs_xflags_map[i].iflag;
2c1d0305
CY		 2861
2862 return iflags;
2863}
2864
2865static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
2866{
2867 struct inode *inode = file_inode(filp);
2868 struct f2fs_inode_info *fi = F2FS_I(inode);
2869 struct fsxattr fa;
2870
2871 memset(&fa, 0, sizeof(struct fsxattr));
36098557 2872 fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags);
2c1d0305 2873
7beb01f7 2874 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
2c1d0305
CY		 2875 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
2876 fi->i_projid);
2877
2878 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2879 return -EFAULT;
2880 return 0;
2881}
2882
c8e92757
WS		 2883static int f2fs_ioctl_check_project(struct inode *inode, struct fsxattr *fa)
2884{
2885 /*
2886 * Project Quota ID state is only allowed to change from within the init
2887 * namespace. Enforce that restriction only if we are trying to change
2888 * the quota ID state. Everything else is allowed in user namespaces.
2889 */
2890 if (current_user_ns() == &init_user_ns)
2891 return 0;
2892
2893 if (__kprojid_val(F2FS_I(inode)->i_projid) != fa->fsx_projid)
2894 return -EINVAL;
2895
2896 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) {
2897 if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT))
2898 return -EINVAL;
2899 } else {
2900 if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT)
2901 return -EINVAL;
2902 }
2903
2904 return 0;
2905}
2906
2c1d0305
CY		 2907static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
2908{
2909 struct inode *inode = file_inode(filp);
2c1d0305 2910 struct fsxattr fa;
36098557 2911 u32 iflags;
2c1d0305
CY		 2912 int err;
2913
2914 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
2915 return -EFAULT;
2916
2917 /* Make sure caller has proper permission */
2918 if (!inode_owner_or_capable(inode))
2919 return -EACCES;
2920
36098557 2921 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
2c1d0305
CY		 2922 return -EOPNOTSUPP;
2923
36098557
EB		 2924 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
2925 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
2c1d0305
CY		 2926 return -EOPNOTSUPP;
2927
2928 err = mnt_want_write_file(filp);
2929 if (err)
2930 return err;
2931
2932 inode_lock(inode);
c8e92757
WS		 2933 err = f2fs_ioctl_check_project(inode, &fa);
2934 if (err)
2935 goto out;
36098557
EB		 2936 err = f2fs_setflags_common(inode, iflags,
2937 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
2c1d0305 2938 if (err)
c8e92757 2939 goto out;
2c1d0305
CY		 2940
2941 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
c8e92757
WS		 2942out:
2943 inode_unlock(inode);
2944 mnt_drop_write_file(filp);
2945 return err;
2c1d0305 2946}
e066b83c 2947
1ad71a27
JK		 2948int f2fs_pin_file_control(struct inode *inode, bool inc)
2949{
2950 struct f2fs_inode_info *fi = F2FS_I(inode);
2951 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2952
2953 /* Use i_gc_failures for normal file as a risk signal. */
2954 if (inc)
2ef79ecb
CY		 2955 f2fs_i_gc_failures_write(inode,
2956 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 2957
2ef79ecb 2958 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
dcbb4c10
JP		 2959 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
2960 __func__, inode->i_ino,
2961 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 2962 clear_inode_flag(inode, FI_PIN_FILE);
2963 return -EAGAIN;
2964 }
2965 return 0;
2966}
2967
2968static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
2969{
2970 struct inode *inode = file_inode(filp);
2971 __u32 pin;
2972 int ret = 0;
2973
1ad71a27
JK		 2974 if (get_user(pin, (__u32 __user *)arg))
2975 return -EFAULT;
2976
2977 if (!S_ISREG(inode->i_mode))
2978 return -EINVAL;
2979
2980 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
2981 return -EROFS;
2982
2983 ret = mnt_want_write_file(filp);
2984 if (ret)
2985 return ret;
2986
2987 inode_lock(inode);
2988
4d57b86d 2989 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 2990 ret = -EINVAL;
2991 goto out;
2992 }
2993
1ad71a27
JK		 2994 if (!pin) {
2995 clear_inode_flag(inode, FI_PIN_FILE);
30933364 2996 f2fs_i_gc_failures_write(inode, 0);
1ad71a27
JK		 2997 goto done;
2998 }
2999
3000 if (f2fs_pin_file_control(inode, false)) {
3001 ret = -EAGAIN;
3002 goto out;
3003 }
3004 ret = f2fs_convert_inline_inode(inode);
3005 if (ret)
3006 goto out;
3007
3008 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 3009 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3010done:
3011 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3012out:
3013 inode_unlock(inode);
3014 mnt_drop_write_file(filp);
3015 return ret;
3016}
3017
3018static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3019{
3020 struct inode *inode = file_inode(filp);
3021 __u32 pin = 0;
3022
3023 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 3024 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 3025 return put_user(pin, (u32 __user *)arg);
3026}
3027
c4020b2d
CY		 3028int f2fs_precache_extents(struct inode *inode)
3029{
3030 struct f2fs_inode_info *fi = F2FS_I(inode);
3031 struct f2fs_map_blocks map;
3032 pgoff_t m_next_extent;
3033 loff_t end;
3034 int err;
3035
3036 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3037 return -EOPNOTSUPP;
3038
3039 map.m_lblk = 0;
3040 map.m_next_pgofs = NULL;
3041 map.m_next_extent = &m_next_extent;
3042 map.m_seg_type = NO_CHECK_TYPE;
f4f0b677 3043 map.m_may_create = false;
c4020b2d
CY		 3044 end = F2FS_I_SB(inode)->max_file_blocks;
3045
3046 while (map.m_lblk < end) {
3047 map.m_len = end - map.m_lblk;
3048
b2532c69 3049 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 3050 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 3051 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 3052 if (err)
3053 return err;
3054
3055 map.m_lblk = m_next_extent;
3056 }
3057
3058 return err;
3059}
3060
3061static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3062{
3063 return f2fs_precache_extents(file_inode(filp));
3064}
3065
04f0b2ea
QS		 3066static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3067{
3068 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3069 __u64 block_count;
3070 int ret;
3071
3072 if (!capable(CAP_SYS_ADMIN))
3073 return -EPERM;
3074
3075 if (f2fs_readonly(sbi->sb))
3076 return -EROFS;
3077
3078 if (copy_from_user(&block_count, (void __user *)arg,
3079 sizeof(block_count)))
3080 return -EFAULT;
3081
3082 ret = f2fs_resize_fs(sbi, block_count);
3083
3084 return ret;
3085}
3086
52656e6c
JK		 3087long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3088{
1f227a3e
JK		 3089 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
3090 return -EIO;
3091
52656e6c
JK		 3092 switch (cmd) {
3093 case F2FS_IOC_GETFLAGS:
3094 return f2fs_ioc_getflags(filp, arg);
3095 case F2FS_IOC_SETFLAGS:
3096 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 3097 case F2FS_IOC_GETVERSION:
3098 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 3099 case F2FS_IOC_START_ATOMIC_WRITE:
3100 return f2fs_ioc_start_atomic_write(filp);
3101 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3102 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 3103 case F2FS_IOC_START_VOLATILE_WRITE:
3104 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 3105 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3106 return f2fs_ioc_release_volatile_write(filp);
3107 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3108 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 3109 case F2FS_IOC_SHUTDOWN:
3110 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 3111 case FITRIM:
3112 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 3113 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3114 return f2fs_ioc_set_encryption_policy(filp, arg);
3115 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3116 return f2fs_ioc_get_encryption_policy(filp, arg);
3117 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3118 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
c1c1b583
CY		 3119 case F2FS_IOC_GARBAGE_COLLECT:
3120 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 3121 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3122 return f2fs_ioc_gc_range(filp, arg);
456b88e4 3123 case F2FS_IOC_WRITE_CHECKPOINT:
059c0648 3124 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 3125 case F2FS_IOC_DEFRAGMENT:
3126 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 3127 case F2FS_IOC_MOVE_RANGE:
3128 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 3129 case F2FS_IOC_FLUSH_DEVICE:
3130 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 3131 case F2FS_IOC_GET_FEATURES:
3132 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 3133 case F2FS_IOC_FSGETXATTR:
3134 return f2fs_ioc_fsgetxattr(filp, arg);
3135 case F2FS_IOC_FSSETXATTR:
3136 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 3137 case F2FS_IOC_GET_PIN_FILE:
3138 return f2fs_ioc_get_pin_file(filp, arg);
3139 case F2FS_IOC_SET_PIN_FILE:
3140 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 3141 case F2FS_IOC_PRECACHE_EXTENTS:
3142 return f2fs_ioc_precache_extents(filp, arg);
04f0b2ea
QS		 3143 case F2FS_IOC_RESIZE_FS:
3144 return f2fs_ioc_resize_fs(filp, arg);
fbfa2cc5
JK		 3145 default:
3146 return -ENOTTY;
3147 }
3148}
3149
fcc85a4d
JK		 3150static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
3151{
b439b103
JK		 3152 struct file *file = iocb->ki_filp;
3153 struct inode *inode = file_inode(file);
3154 ssize_t ret;
fcc85a4d 3155
126ce721
CY		 3156 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
3157 ret = -EIO;
3158 goto out;
3159 }
1f227a3e 3160
126ce721
CY		 3161 if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT)) {
3162 ret = -EINVAL;
3163 goto out;
3164 }
b91050a8
HL		 3165
3166 if (!inode_trylock(inode)) {
126ce721
CY		 3167 if (iocb->ki_flags & IOCB_NOWAIT) {
3168 ret = -EAGAIN;
3169 goto out;
3170 }
b91050a8
HL		 3171 inode_lock(inode);
3172 }
3173
b439b103
JK		 3174 ret = generic_write_checks(iocb, from);
3175 if (ret > 0) {
dc7a10dd
JK		 3176 bool preallocated = false;
3177 size_t target_size = 0;
dc91de78 3178 int err;
a7de6086 3179
dc91de78
JK		 3180 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
3181 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 3182
d5d5f0c0
CX		 3183 if ((iocb->ki_flags & IOCB_NOWAIT)) {
3184 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
b91050a8 3185 iov_iter_count(from)) ||
d5d5f0c0
CX		 3186 f2fs_has_inline_data(inode) ||
3187 f2fs_force_buffered_io(inode, iocb, from)) {
3188 clear_inode_flag(inode, FI_NO_PREALLOC);
3189 inode_unlock(inode);
3190 ret = -EAGAIN;
3191 goto out;
3192 }
b91050a8 3193 } else {
dc7a10dd
JK		 3194 preallocated = true;
3195 target_size = iocb->ki_pos + iov_iter_count(from);
3196
b91050a8
HL		 3197 err = f2fs_preallocate_blocks(iocb, from);
3198 if (err) {
3199 clear_inode_flag(inode, FI_NO_PREALLOC);
3200 inode_unlock(inode);
126ce721
CY		 3201 ret = err;
3202 goto out;
b91050a8 3203 }
9dfa1baf 3204 }
a7de6086 3205 ret = __generic_file_write_iter(iocb, from);
dc91de78 3206 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 3207
dc7a10dd
JK		 3208 /* if we couldn't write data, we should deallocate blocks. */
3209 if (preallocated && i_size_read(inode) < target_size)
3210 f2fs_truncate(inode);
3211
b0af6d49
CY		 3212 if (ret > 0)
3213 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 3214 }
3215 inode_unlock(inode);
126ce721
CY		 3216out:
3217 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
3218 iov_iter_count(from), ret);
e2592217
CH		 3219 if (ret > 0)
3220 ret = generic_write_sync(iocb, ret);
b439b103 3221 return ret;
fcc85a4d
JK		 3222}
3223
e9750824
NJ		 3224#ifdef CONFIG_COMPAT
3225long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3226{
3227 switch (cmd) {
3228 case F2FS_IOC32_GETFLAGS:
3229 cmd = F2FS_IOC_GETFLAGS;
3230 break;
3231 case F2FS_IOC32_SETFLAGS:
3232 cmd = F2FS_IOC_SETFLAGS;
3233 break;
04ef4b62
CY		 3234 case F2FS_IOC32_GETVERSION:
3235 cmd = F2FS_IOC_GETVERSION;
3236 break;
3237 case F2FS_IOC_START_ATOMIC_WRITE:
3238 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3239 case F2FS_IOC_START_VOLATILE_WRITE:
3240 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3241 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3242 case F2FS_IOC_SHUTDOWN:
3243 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3244 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3245 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3246 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 3247 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 3248 case F2FS_IOC_WRITE_CHECKPOINT:
3249 case F2FS_IOC_DEFRAGMENT:
4dd6f977 3250 case F2FS_IOC_MOVE_RANGE:
e066b83c 3251 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 3252 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 3253 case F2FS_IOC_FSGETXATTR:
3254 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 3255 case F2FS_IOC_GET_PIN_FILE:
3256 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 3257 case F2FS_IOC_PRECACHE_EXTENTS:
04f0b2ea 3258 case F2FS_IOC_RESIZE_FS:
4dd6f977 3259 break;
e9750824
NJ		 3260 default:
3261 return -ENOIOCTLCMD;
3262 }
3263 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3264}
3265#endif
3266
fbfa2cc5 3267const struct file_operations f2fs_file_operations = {
267378d4 3268 .llseek = f2fs_llseek,
aad4f8bb 3269 .read_iter = generic_file_read_iter,
fcc85a4d
JK		 3270 .write_iter = f2fs_file_write_iter,
3271 .open = f2fs_file_open,
12662234 3272 .release = f2fs_release_file,
fbfa2cc5 3273 .mmap = f2fs_file_mmap,
7a10f017 3274 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3275 .fsync = f2fs_sync_file,
3276 .fallocate = f2fs_fallocate,
3277 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3278#ifdef CONFIG_COMPAT
3279 .compat_ioctl = f2fs_compat_ioctl,
3280#endif
fbfa2cc5 3281 .splice_read = generic_file_splice_read,
8d020765 3282 .splice_write = iter_file_splice_write,
fbfa2cc5 3283};
Linux 6.x block layer and io_uring tree(s)