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f2fs: fix to dirty inode for i_mode recovery
[linux-2.6-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
ea4d479b 42 return ret;
5a3a2d83
QS		 43}
44
ea4d479b 45static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
fbfa2cc5
JK		 46{
47 struct page *page = vmf->page;
11bac800 48 struct inode *inode = file_inode(vmf->vma->vm_file);
4081363f 49 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
39a86958 50 struct dnode_of_data dn = { .node_changed = false };
e479556b 51 int err;
fbfa2cc5 52
1f227a3e
JK		 53 if (unlikely(f2fs_cp_error(sbi))) {
54 err = -EIO;
55 goto err;
56 }
57
fbfa2cc5 58 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 59
60 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 61
11bac800 62 file_update_time(vmf->vma->vm_file);
5a3a2d83 63 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 64 lock_page(page);
6bacf52f 65 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 66 page_offset(page) > i_size_read(inode) ||
6bacf52f 67 !PageUptodate(page))) {
fbfa2cc5
JK		 68 unlock_page(page);
69 err = -EFAULT;
5a3a2d83 70 goto out_sem;
fbfa2cc5
JK		 71 }
72
39a86958
CY		 73 /* block allocation */
74 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
75 set_new_dnode(&dn, inode, NULL, NULL, 0);
76 err = f2fs_get_block(&dn, page->index);
77 f2fs_put_dnode(&dn);
78 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
79 if (err) {
80 unlock_page(page);
81 goto out_sem;
82 }
83
84 /* fill the page */
bae0ee7a 85 f2fs_wait_on_page_writeback(page, DATA, false, true);
39a86958
CY		 86
87 /* wait for GCed page writeback via META_MAPPING */
88 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
89
fbfa2cc5
JK		 90 /*
91 * check to see if the page is mapped already (no holes)
92 */
93 if (PageMappedToDisk(page))
39a86958 94 goto out_sem;
fbfa2cc5
JK		 95
96 /* page is wholly or partially inside EOF */
09cbfeaf 97 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 98 i_size_read(inode)) {
193bea1d 99 loff_t offset;
f11e98bd 100
09cbfeaf
KS		 101 offset = i_size_read(inode) & ~PAGE_MASK;
102 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 103 }
104 set_page_dirty(page);
237c0790
JK		 105 if (!PageUptodate(page))
106 SetPageUptodate(page);
fbfa2cc5 107
b0af6d49 108 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
c75f2feb 109 f2fs_update_time(sbi, REQ_TIME);
b0af6d49 110
e943a10d 111 trace_f2fs_vm_page_mkwrite(page, DATA);
5a3a2d83
QS		 112out_sem:
113 up_read(&F2FS_I(inode)->i_mmap_sem);
39a86958
CY		 114
115 f2fs_balance_fs(sbi, dn.node_changed);
116
fbfa2cc5 117 sb_end_pagefault(inode->i_sb);
1f227a3e 118err:
fbfa2cc5
JK		 119 return block_page_mkwrite_return(err);
120}
121
122static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 123 .fault = f2fs_filemap_fault,
f1820361 124 .map_pages = filemap_map_pages,
692bb55d 125 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 126};
127
354a3399
JK		 128static int get_parent_ino(struct inode *inode, nid_t *pino)
129{
130 struct dentry *dentry;
131
132 inode = igrab(inode);
133 dentry = d_find_any_alias(inode);
134 iput(inode);
135 if (!dentry)
136 return 0;
137
f0947e5c
JK		 138 *pino = parent_ino(dentry);
139 dput(dentry);
354a3399
JK		 140 return 1;
141}
142
a5fd5050 143static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 144{
4081363f 145 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 146 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 147
a5fd5050
CY		 148 if (!S_ISREG(inode->i_mode))
149 cp_reason = CP_NON_REGULAR;
150 else if (inode->i_nlink != 1)
151 cp_reason = CP_HARDLINK;
bbf156f7 152 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 153 cp_reason = CP_SB_NEED_CP;
9d1589ef 154 else if (file_wrong_pino(inode))
a5fd5050 155 cp_reason = CP_WRONG_PINO;
4d57b86d 156 else if (!f2fs_space_for_roll_forward(sbi))
a5fd5050 157 cp_reason = CP_NO_SPC_ROLL;
4d57b86d 158 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 159 cp_reason = CP_NODE_NEED_CP;
d5053a34 160 else if (test_opt(sbi, FASTBOOT))
a5fd5050 161 cp_reason = CP_FASTBOOT_MODE;
63189b78 162 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 163 cp_reason = CP_SPEC_LOG_NUM;
63189b78 164 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
4d57b86d
CY		 165 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
166 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
167 TRANS_DIR_INO))
0a007b97 168 cp_reason = CP_RECOVER_DIR;
9d1589ef 169
a5fd5050 170 return cp_reason;
9d1589ef
CY		 171}
172
9c7bb702
CL		 173static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
174{
175 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
176 bool ret = false;
177 /* But we need to avoid that there are some inode updates */
4d57b86d 178 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
9c7bb702
CL		 179 ret = true;
180 f2fs_put_page(i, 0);
181 return ret;
182}
183
51455b19
CL		 184static void try_to_fix_pino(struct inode *inode)
185{
186 struct f2fs_inode_info *fi = F2FS_I(inode);
187 nid_t pino;
188
189 down_write(&fi->i_sem);
51455b19
CL		 190 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
191 get_parent_ino(inode, &pino)) {
205b9822 192 f2fs_i_pino_write(inode, pino);
51455b19 193 file_got_pino(inode);
51455b19 194 }
ee6d182f 195 up_write(&fi->i_sem);
51455b19
CL		 196}
197
608514de
JK		 198static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
199 int datasync, bool atomic)
fbfa2cc5
JK		 200{
201 struct inode *inode = file->f_mapping->host;
4081363f 202 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 203 nid_t ino = inode->i_ino;
fbfa2cc5 204 int ret = 0;
a5fd5050 205 enum cp_reason_type cp_reason = 0;
fbfa2cc5 206 struct writeback_control wbc = {
c81bf1c8 207 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 208 .nr_to_write = LONG_MAX,
209 .for_reclaim = 0,
210 };
50fa53ec 211 unsigned int seq_id = 0;
fbfa2cc5 212
4354994f
DR		 213 if (unlikely(f2fs_readonly(inode->i_sb) ||
214 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
1fa95b0b
NJ		 215 return 0;
216
a2a4a7e4 217 trace_f2fs_sync_file_enter(inode);
ea1aa12c 218
b61ac5b7
YH		 219 if (S_ISDIR(inode->i_mode))
220 goto go_write;
221
ea1aa12c 222 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 223 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 224 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 225 ret = file_write_and_wait_range(file, start, end);
91942321 226 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 227
a2a4a7e4 228 if (ret) {
a5fd5050 229 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 230 return ret;
a2a4a7e4 231 }
fbfa2cc5 232
9c7bb702 233 /* if the inode is dirty, let's recover all the time */
281518c6 234 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 235 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 236 goto go_write;
237 }
238
6d99ba41
JK		 239 /*
240 * if there is no written data, don't waste time to write recovery info.
241 */
91942321 242 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
4d57b86d 243 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 244
9c7bb702
CL		 245 /* it may call write_inode just prior to fsync */
246 if (need_inode_page_update(sbi, ino))
19c9c466 247 goto go_write;
19c9c466 248
91942321 249 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
4d57b86d 250 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 251 goto flush_out;
252 goto out;
253 }
19c9c466 254go_write:
e5d2385e
JK		 255 /*
256 * Both of fdatasync() and fsync() are able to be recovered from
257 * sudden-power-off.
258 */
91942321 259 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 260 cp_reason = need_do_checkpoint(inode);
91942321 261 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 262
a5fd5050 263 if (cp_reason) {
fbfa2cc5
JK		 264 /* all the dirty node pages should be flushed for POR */
265 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 266
51455b19
CL		 267 /*
268 * We've secured consistency through sync_fs. Following pino
269 * will be used only for fsynced inodes after checkpoint.
270 */
271 try_to_fix_pino(inode);
91942321
JK		 272 clear_inode_flag(inode, FI_APPEND_WRITE);
273 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 274 goto out;
275 }
88bd02c9 276sync_nodes:
c29fd0c0 277 atomic_inc(&sbi->wb_sync_req[NODE]);
50fa53ec 278 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
c29fd0c0 279 atomic_dec(&sbi->wb_sync_req[NODE]);
c267ec15
JK		 280 if (ret)
281 goto out;
51455b19 282
871f599f 283 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 284 if (unlikely(f2fs_cp_error(sbi))) {
285 ret = -EIO;
871f599f 286 goto out;
6d5a1495 287 }
871f599f 288
4d57b86d 289 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 290 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 291 f2fs_write_inode(inode, NULL);
292 goto sync_nodes;
fbfa2cc5 293 }
51455b19 294
b6a245eb
JK		 295 /*
296 * If it's atomic_write, it's just fine to keep write ordering. So
297 * here we don't need to wait for node write completion, since we use
298 * node chain which serializes node blocks. If one of node writes are
299 * reordered, we can see simply broken chain, resulting in stopping
300 * roll-forward recovery. It means we'll recover all or none node blocks
301 * given fsync mark.
302 */
303 if (!atomic) {
50fa53ec 304 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
b6a245eb
JK		 305 if (ret)
306 goto out;
307 }
51455b19
CL		 308
309 /* once recovery info is written, don't need to tack this */
4d57b86d 310 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 311 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 312flush_out:
d6290814 313 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 314 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 315 if (!ret) {
4d57b86d 316 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 317 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 318 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 319 }
d0239e1b 320 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 321out:
a5fd5050 322 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 323 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 324 return ret;
325}
326
608514de
JK		 327int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
328{
1f227a3e
JK		 329 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
330 return -EIO;
608514de
JK		 331 return f2fs_do_sync_file(file, start, end, datasync, false);
332}
333
7f7670fe
JK		 334static pgoff_t __get_first_dirty_index(struct address_space *mapping,
335 pgoff_t pgofs, int whence)
336{
8faab642 337 struct page *page;
7f7670fe
JK		 338 int nr_pages;
339
340 if (whence != SEEK_DATA)
341 return 0;
342
343 /* find first dirty page index */
8faab642
JK		 344 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
345 1, &page);
346 if (!nr_pages)
347 return ULONG_MAX;
348 pgofs = page->index;
349 put_page(page);
7f7670fe
JK		 350 return pgofs;
351}
352
e1da7872
CY		 353static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
354 pgoff_t dirty, pgoff_t pgofs, int whence)
7f7670fe
JK		 355{
356 switch (whence) {
357 case SEEK_DATA:
358 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
e1da7872 359 is_valid_data_blkaddr(sbi, blkaddr))
7f7670fe
JK		 360 return true;
361 break;
362 case SEEK_HOLE:
363 if (blkaddr == NULL_ADDR)
364 return true;
365 break;
366 }
367 return false;
368}
369
267378d4
CY		 370static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
371{
372 struct inode *inode = file->f_mapping->host;
373 loff_t maxbytes = inode->i_sb->s_maxbytes;
374 struct dnode_of_data dn;
7f7670fe
JK		 375 pgoff_t pgofs, end_offset, dirty;
376 loff_t data_ofs = offset;
377 loff_t isize;
267378d4
CY		 378 int err = 0;
379
5955102c 380 inode_lock(inode);
267378d4
CY		 381
382 isize = i_size_read(inode);
383 if (offset >= isize)
384 goto fail;
385
386 /* handle inline data case */
622f28ae 387 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 388 if (whence == SEEK_HOLE)
389 data_ofs = isize;
390 goto found;
391 }
392
09cbfeaf 393 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 394
7f7670fe
JK		 395 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
396
09cbfeaf 397 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 398 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 399 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 400 if (err && err != -ENOENT) {
401 goto fail;
402 } else if (err == -ENOENT) {
e1c42045 403 /* direct node does not exists */
267378d4 404 if (whence == SEEK_DATA) {
4d57b86d 405 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 406 continue;
407 } else {
408 goto found;
409 }
410 }
411
81ca7350 412 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 413
414 /* find data/hole in dnode block */
415 for (; dn.ofs_in_node < end_offset;
416 dn.ofs_in_node++, pgofs++,
09cbfeaf 417 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 418 block_t blkaddr;
f11e98bd 419
7a2af766
CY		 420 blkaddr = datablock_addr(dn.inode,
421 dn.node_page, dn.ofs_in_node);
267378d4 422
c9b60788
CY		 423 if (__is_valid_data_blkaddr(blkaddr) &&
424 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
425 blkaddr, DATA_GENERIC)) {
426 f2fs_put_dnode(&dn);
427 goto fail;
428 }
429
e1da7872
CY		 430 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
431 pgofs, whence)) {
267378d4
CY		 432 f2fs_put_dnode(&dn);
433 goto found;
434 }
435 }
436 f2fs_put_dnode(&dn);
437 }
438
439 if (whence == SEEK_DATA)
440 goto fail;
267378d4 441found:
fe369bc8
JK		 442 if (whence == SEEK_HOLE && data_ofs > isize)
443 data_ofs = isize;
5955102c 444 inode_unlock(inode);
267378d4
CY		 445 return vfs_setpos(file, data_ofs, maxbytes);
446fail:
5955102c 447 inode_unlock(inode);
267378d4
CY		 448 return -ENXIO;
449}
450
451static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
452{
453 struct inode *inode = file->f_mapping->host;
454 loff_t maxbytes = inode->i_sb->s_maxbytes;
455
456 switch (whence) {
457 case SEEK_SET:
458 case SEEK_CUR:
459 case SEEK_END:
460 return generic_file_llseek_size(file, offset, whence,
461 maxbytes, i_size_read(inode));
462 case SEEK_DATA:
463 case SEEK_HOLE:
0b4c5afd
JK		 464 if (offset < 0)
465 return -ENXIO;
267378d4
CY		 466 return f2fs_seek_block(file, offset, whence);
467 }
468
469 return -EINVAL;
470}
471
fbfa2cc5
JK		 472static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
473{
b3d208f9 474 struct inode *inode = file_inode(file);
b9d777b8 475 int err;
b3d208f9 476
1f227a3e
JK		 477 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
478 return -EIO;
479
b3d208f9 480 /* we don't need to use inline_data strictly */
b9d777b8
JK		 481 err = f2fs_convert_inline_inode(inode);
482 if (err)
483 return err;
b3d208f9 484
fbfa2cc5
JK		 485 file_accessed(file);
486 vma->vm_ops = &f2fs_file_vm_ops;
487 return 0;
488}
489
fcc85a4d
JK		 490static int f2fs_file_open(struct inode *inode, struct file *filp)
491{
2e168c82 492 int err = fscrypt_file_open(inode, filp);
fcc85a4d 493
2e168c82
EB		 494 if (err)
495 return err;
b91050a8
HL		 496
497 filp->f_mode |= FMODE_NOWAIT;
498
0abd675e 499 return dquot_file_open(inode, filp);
fcc85a4d
JK		 500}
501
4d57b86d 502void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 503{
4081363f 504 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 505 struct f2fs_node *raw_node;
19b2c30d 506 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 507 __le32 *addr;
7a2af766
CY		 508 int base = 0;
509
510 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
511 base = get_extra_isize(dn->inode);
fbfa2cc5 512
45590710 513 raw_node = F2FS_NODE(dn->node_page);
7a2af766 514 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 515
6c311ec6 516 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
fbfa2cc5 517 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 518
fbfa2cc5
JK		 519 if (blkaddr == NULL_ADDR)
520 continue;
521
e1509cf2 522 dn->data_blkaddr = NULL_ADDR;
4d57b86d 523 f2fs_set_data_blkaddr(dn);
c9b60788
CY		 524
525 if (__is_valid_data_blkaddr(blkaddr) &&
526 !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC))
527 continue;
528
4d57b86d 529 f2fs_invalidate_blocks(sbi, blkaddr);
3c6c2beb 530 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 531 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
fbfa2cc5
JK		 532 nr_free++;
533 }
19b2c30d 534
fbfa2cc5 535 if (nr_free) {
19b2c30d
CY		 536 pgoff_t fofs;
537 /*
538 * once we invalidate valid blkaddr in range [ofs, ofs + count],
539 * we will invalidate all blkaddr in the whole range.
540 */
4d57b86d 541 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 542 dn->inode) + ofs;
19b2c30d 543 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 544 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 545 }
546 dn->ofs_in_node = ofs;
51dd6249 547
d0239e1b 548 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 549 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
550 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 551}
552
4d57b86d 553void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 554{
4d57b86d 555 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
fbfa2cc5
JK		 556}
557
0bfcfcca 558static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 559 bool cache_only)
fbfa2cc5 560{
193bea1d 561 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 562 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 563 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 564 struct page *page;
565
43f3eae1 566 if (!offset && !cache_only)
b3d208f9 567 return 0;
fbfa2cc5 568
43f3eae1 569 if (cache_only) {
34b5d5c2 570 page = find_lock_page(mapping, index);
43f3eae1
JK		 571 if (page && PageUptodate(page))
572 goto truncate_out;
573 f2fs_put_page(page, 1);
b3d208f9 574 return 0;
43f3eae1 575 }
fbfa2cc5 576
4d57b86d 577 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 578 if (IS_ERR(page))
a78aaa2c 579 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 580truncate_out:
bae0ee7a 581 f2fs_wait_on_page_writeback(page, DATA, true, true);
09cbfeaf 582 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 583
584 /* An encrypted inode should have a key and truncate the last page. */
585 f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode));
586 if (!cache_only)
0bfcfcca 587 set_page_dirty(page);
fbfa2cc5 588 f2fs_put_page(page, 1);
b3d208f9 589 return 0;
fbfa2cc5
JK		 590}
591
c42d28ce 592int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 593{
4081363f 594 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 595 struct dnode_of_data dn;
596 pgoff_t free_from;
9ffe0fb5 597 int count = 0, err = 0;
b3d208f9 598 struct page *ipage;
0bfcfcca 599 bool truncate_page = false;
fbfa2cc5 600
51dd6249
NJ		 601 trace_f2fs_truncate_blocks_enter(inode, from);
602
df033caf 603 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 604
09210c97
CY		 605 if (free_from >= sbi->max_file_blocks)
606 goto free_partial;
607
764aa3e9 608 if (lock)
c42d28ce 609 f2fs_lock_op(sbi);
9ffe0fb5 610
4d57b86d 611 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 612 if (IS_ERR(ipage)) {
613 err = PTR_ERR(ipage);
614 goto out;
615 }
616
617 if (f2fs_has_inline_data(inode)) {
4d57b86d 618 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 619 f2fs_put_page(ipage, 1);
0bfcfcca 620 truncate_page = true;
b3d208f9
JK		 621 goto out;
622 }
623
624 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 625 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 626 if (err) {
627 if (err == -ENOENT)
628 goto free_next;
b3d208f9 629 goto out;
1ce86bf6
JK		 630 }
631
81ca7350 632 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 633
634 count -= dn.ofs_in_node;
9850cf4a 635 f2fs_bug_on(sbi, count < 0);
39936837 636
fbfa2cc5 637 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 638 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 639 free_from += count;
640 }
641
642 f2fs_put_dnode(&dn);
643free_next:
4d57b86d 644 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 645out:
646 if (lock)
c42d28ce 647 f2fs_unlock_op(sbi);
09210c97 648free_partial:
b3d208f9
JK		 649 /* lastly zero out the first data page */
650 if (!err)
0bfcfcca 651 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 652
51dd6249 653 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 654 return err;
655}
656
9a449e9c 657int f2fs_truncate(struct inode *inode)
fbfa2cc5 658{
b0154891
CY		 659 int err;
660
1f227a3e
JK		 661 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
662 return -EIO;
663
fbfa2cc5
JK		 664 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
665 S_ISLNK(inode->i_mode)))
b0154891 666 return 0;
fbfa2cc5 667
51dd6249
NJ		 668 trace_f2fs_truncate(inode);
669
14b44d23
JK		 670 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
671 f2fs_show_injection_info(FAULT_TRUNCATE);
672 return -EIO;
673 }
7fa750a1 674
92dffd01 675 /* we should check inline_data size */
b9d777b8 676 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 677 err = f2fs_convert_inline_inode(inode);
678 if (err)
679 return err;
92dffd01
JK		 680 }
681
c42d28ce 682 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 683 if (err)
684 return err;
685
078cd827 686 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 687 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 688 return 0;
fbfa2cc5
JK		 689}
690
a528d35e 691int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 692 u32 request_mask, unsigned int query_flags)
fbfa2cc5 693{
a528d35e 694 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 695 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 696 struct f2fs_inode *ri;
1c6d8ee4
CY		 697 unsigned int flags;
698
1c1d35df 699 if (f2fs_has_extra_attr(inode) &&
7beb01f7 700 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
1c1d35df
CY		 701 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
702 stat->result_mask |= STATX_BTIME;
703 stat->btime.tv_sec = fi->i_crtime.tv_sec;
704 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
705 }
706
c807a7cb 707 flags = fi->i_flags & F2FS_FL_USER_VISIBLE;
59c84408 708 if (flags & F2FS_APPEND_FL)
1c6d8ee4 709 stat->attributes |= STATX_ATTR_APPEND;
59c84408 710 if (flags & F2FS_COMPR_FL)
1c6d8ee4
CY		 711 stat->attributes |= STATX_ATTR_COMPRESSED;
712 if (f2fs_encrypted_inode(inode))
713 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 714 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 715 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 716 if (flags & F2FS_NODUMP_FL)
1c6d8ee4
CY		 717 stat->attributes |= STATX_ATTR_NODUMP;
718
719 stat->attributes_mask |= (STATX_ATTR_APPEND |
720 STATX_ATTR_COMPRESSED |
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;
1009 done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len);
1010 blkaddr += done;
1011 do_replace += done;
1012 goto next;
1013 }
1014
1015 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1016 dn.ofs_in_node, len);
1017 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 1018 *blkaddr = datablock_addr(dn.inode,
1019 dn.node_page, dn.ofs_in_node);
4d57b86d 1020 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb
JK		 1021
1022 if (test_opt(sbi, LFS)) {
1023 f2fs_put_dnode(&dn);
1024 return -ENOTSUPP;
1025 }
1026
6e2c64ad 1027 /* do not invalidate this block address */
f28b3434 1028 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 1029 *do_replace = 1;
b4ace337 1030 }
6e2c64ad 1031 }
0a2aa8fb
JK		 1032 f2fs_put_dnode(&dn);
1033next:
1034 len -= done;
1035 off += done;
1036 if (len)
1037 goto next_dnode;
1038 return 0;
1039}
b4ace337 1040
0a2aa8fb
JK		 1041static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1042 int *do_replace, pgoff_t off, int len)
1043{
1044 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1045 struct dnode_of_data dn;
1046 int ret, i;
b4ace337 1047
0a2aa8fb
JK		 1048 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1049 if (*do_replace == 0)
1050 continue;
b4ace337 1051
0a2aa8fb 1052 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1053 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1054 if (ret) {
1055 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1056 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1057 } else {
1058 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1059 }
0a2aa8fb
JK		 1060 f2fs_put_dnode(&dn);
1061 }
1062 return 0;
1063}
1064
1065static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1066 block_t *blkaddr, int *do_replace,
1067 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1068{
1069 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1070 pgoff_t i = 0;
1071 int ret;
36abef4e 1072
0a2aa8fb
JK		 1073 while (i < len) {
1074 if (blkaddr[i] == NULL_ADDR && !full) {
1075 i++;
1076 continue;
6e2c64ad 1077 }
b4ace337 1078
0a2aa8fb
JK		 1079 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1080 struct dnode_of_data dn;
1081 struct node_info ni;
1082 size_t new_size;
1083 pgoff_t ilen;
b4ace337 1084
0a2aa8fb 1085 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1086 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1087 if (ret)
1088 return ret;
b4ace337 1089
7735730d
CY		 1090 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1091 if (ret) {
1092 f2fs_put_dnode(&dn);
1093 return ret;
1094 }
1095
0a2aa8fb
JK		 1096 ilen = min((pgoff_t)
1097 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1098 dn.ofs_in_node, len - i);
1099 do {
7a2af766
CY		 1100 dn.data_blkaddr = datablock_addr(dn.inode,
1101 dn.node_page, dn.ofs_in_node);
4d57b86d 1102 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1103
1104 if (do_replace[i]) {
1105 f2fs_i_blocks_write(src_inode,
0abd675e 1106 1, false, false);
0a2aa8fb 1107 f2fs_i_blocks_write(dst_inode,
0abd675e 1108 1, true, false);
0a2aa8fb
JK		 1109 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1110 blkaddr[i], ni.version, true, false);
1111
1112 do_replace[i] = 0;
1113 }
1114 dn.ofs_in_node++;
1115 i++;
1116 new_size = (dst + i) << PAGE_SHIFT;
1117 if (dst_inode->i_size < new_size)
1118 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1119 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1120
0a2aa8fb
JK		 1121 f2fs_put_dnode(&dn);
1122 } else {
1123 struct page *psrc, *pdst;
1124
4d57b86d
CY		 1125 psrc = f2fs_get_lock_data_page(src_inode,
1126 src + i, true);
0a2aa8fb
JK		 1127 if (IS_ERR(psrc))
1128 return PTR_ERR(psrc);
4d57b86d 1129 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1130 true);
1131 if (IS_ERR(pdst)) {
1132 f2fs_put_page(psrc, 1);
1133 return PTR_ERR(pdst);
1134 }
1135 f2fs_copy_page(psrc, pdst);
1136 set_page_dirty(pdst);
1137 f2fs_put_page(pdst, 1);
6e2c64ad 1138 f2fs_put_page(psrc, 1);
b4ace337 1139
4d57b86d
CY		 1140 ret = f2fs_truncate_hole(src_inode,
1141 src + i, src + i + 1);
0a2aa8fb
JK		 1142 if (ret)
1143 return ret;
1144 i++;
1145 }
6e2c64ad
JK		 1146 }
1147 return 0;
0a2aa8fb 1148}
b4ace337 1149
0a2aa8fb
JK		 1150static int __exchange_data_block(struct inode *src_inode,
1151 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1152 pgoff_t len, bool full)
0a2aa8fb
JK		 1153{
1154 block_t *src_blkaddr;
1155 int *do_replace;
363cad7f 1156 pgoff_t olen;
0a2aa8fb
JK		 1157 int ret;
1158
363cad7f
JK		 1159 while (len) {
1160 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len);
0a2aa8fb 1161
628b3d14 1162 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1163 array_size(olen, sizeof(block_t)),
1164 GFP_KERNEL);
363cad7f
JK		 1165 if (!src_blkaddr)
1166 return -ENOMEM;
0a2aa8fb 1167
628b3d14 1168 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1169 array_size(olen, sizeof(int)),
1170 GFP_KERNEL);
363cad7f
JK		 1171 if (!do_replace) {
1172 kvfree(src_blkaddr);
1173 return -ENOMEM;
1174 }
0a2aa8fb 1175
363cad7f
JK		 1176 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1177 do_replace, src, olen);
1178 if (ret)
1179 goto roll_back;
0a2aa8fb 1180
363cad7f
JK		 1181 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1182 do_replace, src, dst, olen, full);
1183 if (ret)
1184 goto roll_back;
1185
1186 src += olen;
1187 dst += olen;
1188 len -= olen;
1189
1190 kvfree(src_blkaddr);
1191 kvfree(do_replace);
1192 }
0a2aa8fb
JK		 1193 return 0;
1194
1195roll_back:
9fd62605 1196 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1197 kvfree(src_blkaddr);
1198 kvfree(do_replace);
6e2c64ad
JK		 1199 return ret;
1200}
b4ace337 1201
6f8d4455 1202static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
6e2c64ad
JK		 1203{
1204 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1205 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
6f8d4455
JK		 1206 pgoff_t start = offset >> PAGE_SHIFT;
1207 pgoff_t end = (offset + len) >> PAGE_SHIFT;
0a2aa8fb 1208 int ret;
6e2c64ad 1209
0a2aa8fb 1210 f2fs_balance_fs(sbi, true);
5f281fab 1211
6f8d4455
JK		 1212 /* avoid gc operation during block exchange */
1213 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1214 down_write(&F2FS_I(inode)->i_mmap_sem);
5f281fab 1215
6f8d4455
JK		 1216 f2fs_lock_op(sbi);
1217 f2fs_drop_extent_tree(inode);
1218 truncate_pagecache(inode, offset);
0a2aa8fb
JK		 1219 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1220 f2fs_unlock_op(sbi);
6f8d4455
JK		 1221
1222 up_write(&F2FS_I(inode)->i_mmap_sem);
1223 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1224 return ret;
1225}
1226
1227static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1228{
b4ace337
CY		 1229 loff_t new_size;
1230 int ret;
1231
b4ace337
CY		 1232 if (offset + len >= i_size_read(inode))
1233 return -EINVAL;
1234
1235 /* collapse range should be aligned to block size of f2fs. */
1236 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1237 return -EINVAL;
1238
b9d777b8
JK		 1239 ret = f2fs_convert_inline_inode(inode);
1240 if (ret)
1241 return ret;
97a7b2c2 1242
b4ace337
CY		 1243 /* write out all dirty pages from offset */
1244 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1245 if (ret)
6f8d4455 1246 return ret;
b4ace337 1247
6f8d4455 1248 ret = f2fs_do_collapse(inode, offset, len);
b4ace337 1249 if (ret)
6f8d4455 1250 return ret;
b4ace337 1251
6e2c64ad 1252 /* write out all moved pages, if possible */
6f8d4455 1253 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1254 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1255 truncate_pagecache(inode, offset);
1256
b4ace337 1257 new_size = i_size_read(inode) - len;
6e2c64ad 1258 truncate_pagecache(inode, new_size);
b4ace337 1259
c42d28ce 1260 ret = f2fs_truncate_blocks(inode, new_size, true);
6f8d4455 1261 up_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337 1262 if (!ret)
fc9581c8 1263 f2fs_i_size_write(inode, new_size);
b4ace337
CY		 1264 return ret;
1265}
1266
6e961949
CY		 1267static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1268 pgoff_t end)
1269{
1270 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1271 pgoff_t index = start;
1272 unsigned int ofs_in_node = dn->ofs_in_node;
1273 blkcnt_t count = 0;
1274 int ret;
1275
1276 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1277 if (datablock_addr(dn->inode, dn->node_page,
1278 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1279 count++;
1280 }
1281
1282 dn->ofs_in_node = ofs_in_node;
4d57b86d 1283 ret = f2fs_reserve_new_blocks(dn, count);
6e961949
CY		 1284 if (ret)
1285 return ret;
1286
1287 dn->ofs_in_node = ofs_in_node;
1288 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1289 dn->data_blkaddr = datablock_addr(dn->inode,
1290 dn->node_page, dn->ofs_in_node);
6e961949 1291 /*
4d57b86d 1292 * f2fs_reserve_new_blocks will not guarantee entire block
6e961949
CY		 1293 * allocation.
1294 */
1295 if (dn->data_blkaddr == NULL_ADDR) {
1296 ret = -ENOSPC;
1297 break;
1298 }
1299 if (dn->data_blkaddr != NEW_ADDR) {
4d57b86d 1300 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
6e961949 1301 dn->data_blkaddr = NEW_ADDR;
4d57b86d 1302 f2fs_set_data_blkaddr(dn);
6e961949
CY		 1303 }
1304 }
1305
1306 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1307
1308 return ret;
1309}
1310
75cd4e09
CY		 1311static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1312 int mode)
1313{
1314 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1315 struct address_space *mapping = inode->i_mapping;
1316 pgoff_t index, pg_start, pg_end;
1317 loff_t new_size = i_size_read(inode);
1318 loff_t off_start, off_end;
1319 int ret = 0;
1320
75cd4e09
CY		 1321 ret = inode_newsize_ok(inode, (len + offset));
1322 if (ret)
1323 return ret;
1324
b9d777b8
JK		 1325 ret = f2fs_convert_inline_inode(inode);
1326 if (ret)
1327 return ret;
75cd4e09
CY		 1328
1329 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1330 if (ret)
6f8d4455 1331 return ret;
75cd4e09 1332
09cbfeaf
KS		 1333 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1334 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1335
09cbfeaf
KS		 1336 off_start = offset & (PAGE_SIZE - 1);
1337 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1338
1339 if (pg_start == pg_end) {
6394328a
CY		 1340 ret = fill_zero(inode, pg_start, off_start,
1341 off_end - off_start);
1342 if (ret)
6f8d4455 1343 return ret;
6394328a 1344
75cd4e09
CY		 1345 new_size = max_t(loff_t, new_size, offset + len);
1346 } else {
1347 if (off_start) {
6394328a 1348 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1349 PAGE_SIZE - off_start);
6394328a 1350 if (ret)
6f8d4455 1351 return ret;
6394328a 1352
75cd4e09 1353 new_size = max_t(loff_t, new_size,
09cbfeaf 1354 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1355 }
1356
6e961949 1357 for (index = pg_start; index < pg_end;) {
75cd4e09 1358 struct dnode_of_data dn;
6e961949
CY		 1359 unsigned int end_offset;
1360 pgoff_t end;
75cd4e09 1361
c7079853 1362 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
6f8d4455 1363 down_write(&F2FS_I(inode)->i_mmap_sem);
c7079853
CY		 1364
1365 truncate_pagecache_range(inode,
1366 (loff_t)index << PAGE_SHIFT,
1367 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1368
75cd4e09
CY		 1369 f2fs_lock_op(sbi);
1370
6e961949 1371 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1372 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1373 if (ret) {
1374 f2fs_unlock_op(sbi);
6f8d4455 1375 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1376 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
75cd4e09
CY		 1377 goto out;
1378 }
1379
6e961949
CY		 1380 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1381 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1382
1383 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09 1384 f2fs_put_dnode(&dn);
c7079853 1385
75cd4e09 1386 f2fs_unlock_op(sbi);
6f8d4455 1387 up_write(&F2FS_I(inode)->i_mmap_sem);
c7079853 1388 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
9434fcde
CY		 1389
1390 f2fs_balance_fs(sbi, dn.node_changed);
1391
6e961949
CY		 1392 if (ret)
1393 goto out;
75cd4e09 1394
6e961949 1395 index = end;
75cd4e09 1396 new_size = max_t(loff_t, new_size,
6e961949 1397 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1398 }
1399
1400 if (off_end) {
6394328a
CY		 1401 ret = fill_zero(inode, pg_end, 0, off_end);
1402 if (ret)
1403 goto out;
1404
75cd4e09
CY		 1405 new_size = max_t(loff_t, new_size, offset + len);
1406 }
1407 }
1408
1409out:
17cd07ae
CY		 1410 if (new_size > i_size_read(inode)) {
1411 if (mode & FALLOC_FL_KEEP_SIZE)
1412 file_set_keep_isize(inode);
1413 else
1414 f2fs_i_size_write(inode, new_size);
1415 }
75cd4e09
CY		 1416 return ret;
1417}
1418
f62185d0
CY		 1419static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1420{
1421 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1422 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1423 loff_t new_size;
6e2c64ad 1424 int ret = 0;
f62185d0 1425
f62185d0 1426 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1427 ret = inode_newsize_ok(inode, new_size);
1428 if (ret)
1429 return ret;
f62185d0
CY		 1430
1431 if (offset >= i_size_read(inode))
1432 return -EINVAL;
1433
1434 /* insert range should be aligned to block size of f2fs. */
1435 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1436 return -EINVAL;
1437
b9d777b8
JK		 1438 ret = f2fs_convert_inline_inode(inode);
1439 if (ret)
1440 return ret;
97a7b2c2 1441
2c4db1a6 1442 f2fs_balance_fs(sbi, true);
2a340760 1443
5a3a2d83 1444 down_write(&F2FS_I(inode)->i_mmap_sem);
c42d28ce 1445 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
6f8d4455 1446 up_write(&F2FS_I(inode)->i_mmap_sem);
f62185d0 1447 if (ret)
6f8d4455 1448 return ret;
f62185d0
CY		 1449
1450 /* write out all dirty pages from offset */
1451 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1452 if (ret)
6f8d4455 1453 return ret;
f62185d0 1454
09cbfeaf
KS		 1455 pg_start = offset >> PAGE_SHIFT;
1456 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1457 delta = pg_end - pg_start;
0a2aa8fb
JK		 1458 idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1459
6f8d4455
JK		 1460 /* avoid gc operation during block exchange */
1461 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1462 down_write(&F2FS_I(inode)->i_mmap_sem);
1463 truncate_pagecache(inode, offset);
1464
0a2aa8fb
JK		 1465 while (!ret && idx > pg_start) {
1466 nr = idx - pg_start;
1467 if (nr > delta)
1468 nr = delta;
1469 idx -= nr;
f62185d0 1470
f62185d0 1471 f2fs_lock_op(sbi);
5f281fab
JK		 1472 f2fs_drop_extent_tree(inode);
1473
0a2aa8fb
JK		 1474 ret = __exchange_data_block(inode, inode, idx,
1475 idx + delta, nr, false);
f62185d0
CY		 1476 f2fs_unlock_op(sbi);
1477 }
6f8d4455
JK		 1478 up_write(&F2FS_I(inode)->i_mmap_sem);
1479 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f62185d0 1480
6e2c64ad 1481 /* write out all moved pages, if possible */
6f8d4455 1482 down_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1483 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1484 truncate_pagecache(inode, offset);
6f8d4455 1485 up_write(&F2FS_I(inode)->i_mmap_sem);
6e2c64ad
JK		 1486
1487 if (!ret)
fc9581c8 1488 f2fs_i_size_write(inode, new_size);
f62185d0
CY		 1489 return ret;
1490}
1491
fbfa2cc5
JK		 1492static int expand_inode_data(struct inode *inode, loff_t offset,
1493 loff_t len, int mode)
1494{
4081363f 1495 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1496 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
f9d6d059
CY		 1497 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1498 .m_may_create = true };
e12dd7bd 1499 pgoff_t pg_end;
fbfa2cc5 1500 loff_t new_size = i_size_read(inode);
e12dd7bd 1501 loff_t off_end;
a7de6086 1502 int err;
fbfa2cc5 1503
a7de6086
JK		 1504 err = inode_newsize_ok(inode, (len + offset));
1505 if (err)
1506 return err;
fbfa2cc5 1507
a7de6086
JK		 1508 err = f2fs_convert_inline_inode(inode);
1509 if (err)
1510 return err;
9e09fc85 1511
2c4db1a6 1512 f2fs_balance_fs(sbi, true);
2a340760 1513
e12dd7bd 1514 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1515 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1516
e12dd7bd
JK		 1517 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1518 map.m_len = pg_end - map.m_lblk;
1519 if (off_end)
1520 map.m_len++;
ead43275 1521
a7de6086
JK		 1522 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1523 if (err) {
e12dd7bd 1524 pgoff_t last_off;
fbfa2cc5 1525
e12dd7bd 1526 if (!map.m_len)
a7de6086 1527 return err;
98397ff3 1528
e12dd7bd
JK		 1529 last_off = map.m_lblk + map.m_len - 1;
1530
1531 /* update new size to the failed position */
1061fd48 1532 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1533 (loff_t)(last_off + 1) << PAGE_SHIFT;
1534 } else {
1535 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1536 }
1537
e8ed90a6
CY		 1538 if (new_size > i_size_read(inode)) {
1539 if (mode & FALLOC_FL_KEEP_SIZE)
1540 file_set_keep_isize(inode);
1541 else
1542 f2fs_i_size_write(inode, new_size);
1543 }
fbfa2cc5 1544
a7de6086 1545 return err;
fbfa2cc5
JK		 1546}
1547
1548static long f2fs_fallocate(struct file *file, int mode,
1549 loff_t offset, loff_t len)
1550{
6131ffaa 1551 struct inode *inode = file_inode(file);
587c0a42 1552 long ret = 0;
fbfa2cc5 1553
1f227a3e
JK		 1554 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1555 return -EIO;
1556
c998012b
CY		 1557 /* f2fs only support ->fallocate for regular file */
1558 if (!S_ISREG(inode->i_mode))
1559 return -EINVAL;
1560
f62185d0
CY		 1561 if (f2fs_encrypted_inode(inode) &&
1562 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1563 return -EOPNOTSUPP;
1564
b4ace337 1565 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1566 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1567 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1568 return -EOPNOTSUPP;
1569
5955102c 1570 inode_lock(inode);
3375f696 1571
587c0a42
TY		 1572 if (mode & FALLOC_FL_PUNCH_HOLE) {
1573 if (offset >= inode->i_size)
1574 goto out;
1575
a66c7b2f 1576 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1577 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1578 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1579 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1580 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1581 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1582 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1583 } else {
fbfa2cc5 1584 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1585 }
fbfa2cc5 1586
3af60a49 1587 if (!ret) {
078cd827 1588 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1589 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1590 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1591 }
3375f696 1592
587c0a42 1593out:
5955102c 1594 inode_unlock(inode);
3375f696 1595
c01e2853 1596 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1597 return ret;
1598}
1599
1e84371f
JK		 1600static int f2fs_release_file(struct inode *inode, struct file *filp)
1601{
de5307e4
JK		 1602 /*
1603 * f2fs_relase_file is called at every close calls. So we should
1604 * not drop any inmemory pages by close called by other process.
1605 */
1606 if (!(filp->f_mode & FMODE_WRITE) ||
1607 atomic_read(&inode->i_writecount) != 1)
1608 return 0;
1609
1e84371f
JK		 1610 /* some remained atomic pages should discarded */
1611 if (f2fs_is_atomic_file(inode))
4d57b86d 1612 f2fs_drop_inmem_pages(inode);
1e84371f 1613 if (f2fs_is_volatile_file(inode)) {
91942321 1614 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1615 filemap_fdatawrite(inode->i_mapping);
91942321 1616 clear_inode_flag(inode, FI_DROP_CACHE);
dfa74280
CY		 1617 clear_inode_flag(inode, FI_VOLATILE_FILE);
1618 stat_dec_volatile_write(inode);
1e84371f
JK		 1619 }
1620 return 0;
1621}
1622
7a10f017 1623static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1624{
7a10f017
JK		 1625 struct inode *inode = file_inode(file);
1626
1627 /*
1628 * If the process doing a transaction is crashed, we should do
1629 * roll-back. Otherwise, other reader/write can see corrupted database
1630 * until all the writers close its file. Since this should be done
1631 * before dropping file lock, it needs to do in ->flush.
1632 */
1633 if (f2fs_is_atomic_file(inode) &&
1634 F2FS_I(inode)->inmem_task == current)
4d57b86d 1635 f2fs_drop_inmem_pages(inode);
7a10f017 1636 return 0;
fbfa2cc5
JK		 1637}
1638
52656e6c 1639static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
fbfa2cc5 1640{
6131ffaa 1641 struct inode *inode = file_inode(filp);
fbfa2cc5 1642 struct f2fs_inode_info *fi = F2FS_I(inode);
76481158
CY		 1643 unsigned int flags = fi->i_flags;
1644
5b72d5e0 1645 if (f2fs_encrypted_inode(inode))
76481158
CY		 1646 flags |= F2FS_ENCRYPT_FL;
1647 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1648 flags |= F2FS_INLINE_DATA_FL;
5d539245
JK		 1649 if (is_inode_flag_set(inode, FI_PIN_FILE))
1650 flags |= F2FS_NOCOW_FL;
76481158
CY		 1651
1652 flags &= F2FS_FL_USER_VISIBLE;
1653
52656e6c
JK		 1654 return put_user(flags, (int __user *)arg);
1655}
fbfa2cc5 1656
2c1d0305
CY		 1657static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags)
1658{
1659 struct f2fs_inode_info *fi = F2FS_I(inode);
1660 unsigned int oldflags;
1661
1662 /* Is it quota file? Do not allow user to mess with it */
1663 if (IS_NOQUOTA(inode))
1664 return -EPERM;
1665
1666 flags = f2fs_mask_flags(inode->i_mode, flags);
1667
1668 oldflags = fi->i_flags;
1669
59c84408 1670 if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL))
2c1d0305
CY		 1671 if (!capable(CAP_LINUX_IMMUTABLE))
1672 return -EPERM;
1673
c807a7cb
CY		 1674 flags = flags & F2FS_FL_USER_MODIFIABLE;
1675 flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE;
2c1d0305
CY		 1676 fi->i_flags = flags;
1677
59c84408 1678 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1679 set_inode_flag(inode, FI_PROJ_INHERIT);
1680 else
1681 clear_inode_flag(inode, FI_PROJ_INHERIT);
1682
1683 inode->i_ctime = current_time(inode);
1684 f2fs_set_inode_flags(inode);
b32e0190 1685 f2fs_mark_inode_dirty_sync(inode, true);
2c1d0305
CY		 1686 return 0;
1687}
1688
52656e6c
JK		 1689static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1690{
1691 struct inode *inode = file_inode(filp);
69494229 1692 unsigned int flags;
52656e6c 1693 int ret;
fbfa2cc5 1694
7fb17fe4
CY		 1695 if (!inode_owner_or_capable(inode))
1696 return -EACCES;
1697
1698 if (get_user(flags, (int __user *)arg))
1699 return -EFAULT;
1700
52656e6c
JK		 1701 ret = mnt_want_write_file(filp);
1702 if (ret)
1703 return ret;
fbfa2cc5 1704
5955102c 1705 inode_lock(inode);
fbfa2cc5 1706
2c1d0305 1707 ret = __f2fs_ioc_setflags(inode, flags);
fbfa2cc5 1708
a72d4b97 1709 inode_unlock(inode);
52656e6c
JK		 1710 mnt_drop_write_file(filp);
1711 return ret;
1712}
4b2fecc8 1713
d49f3e89
CY		 1714static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1715{
1716 struct inode *inode = file_inode(filp);
1717
1718 return put_user(inode->i_generation, (int __user *)arg);
1719}
1720
88b88a66
JK		 1721static int f2fs_ioc_start_atomic_write(struct file *filp)
1722{
1723 struct inode *inode = file_inode(filp);
f4c9c743 1724 int ret;
88b88a66
JK		 1725
1726 if (!inode_owner_or_capable(inode))
1727 return -EACCES;
1728
e811898c
JK		 1729 if (!S_ISREG(inode->i_mode))
1730 return -EINVAL;
1731
7fb17fe4
CY		 1732 ret = mnt_want_write_file(filp);
1733 if (ret)
1734 return ret;
1735
0fac558b
CY		 1736 inode_lock(inode);
1737
455e3a58
JK		 1738 if (f2fs_is_atomic_file(inode)) {
1739 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1740 ret = -EINVAL;
7fb17fe4 1741 goto out;
455e3a58 1742 }
88b88a66 1743
f4c9c743
CY		 1744 ret = f2fs_convert_inline_inode(inode);
1745 if (ret)
7fb17fe4 1746 goto out;
88b88a66 1747
6f8d4455
JK		 1748 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1749
31867b23
JK		 1750 /*
1751 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
1752 * f2fs_is_atomic_file.
1753 */
1754 if (get_dirty_pages(inode))
1755 f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
204706c7 1756 "Unexpected flush for atomic writes: ino=%lu, npages=%u",
c27753d6
JK		 1757 inode->i_ino, get_dirty_pages(inode));
1758 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
6f8d4455
JK		 1759 if (ret) {
1760 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 1761 goto out;
6f8d4455 1762 }
31867b23 1763
054afda9 1764 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1765 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
6f8d4455 1766 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
684ca7e5 1767
6f8d4455 1768 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7a10f017 1769 F2FS_I(inode)->inmem_task = current;
26a28a0c
JK		 1770 stat_inc_atomic_write(inode);
1771 stat_update_max_atomic_write(inode);
684ca7e5 1772out:
0fac558b 1773 inode_unlock(inode);
7fb17fe4 1774 mnt_drop_write_file(filp);
c27753d6 1775 return ret;
88b88a66
JK		 1776}
1777
1778static int f2fs_ioc_commit_atomic_write(struct file *filp)
1779{
1780 struct inode *inode = file_inode(filp);
1781 int ret;
1782
1783 if (!inode_owner_or_capable(inode))
1784 return -EACCES;
1785
1786 ret = mnt_want_write_file(filp);
1787 if (ret)
1788 return ret;
1789
6f8d4455 1790 f2fs_balance_fs(F2FS_I_SB(inode), true);
0fac558b 1791
6f8d4455 1792 inode_lock(inode);
1dc0f899 1793
b169c3c5
CY		 1794 if (f2fs_is_volatile_file(inode)) {
1795 ret = -EINVAL;
7fb17fe4 1796 goto err_out;
b169c3c5 1797 }
7fb17fe4 1798
6282adbf 1799 if (f2fs_is_atomic_file(inode)) {
4d57b86d 1800 ret = f2fs_commit_inmem_pages(inode);
5fe45743 1801 if (ret)
edb27dee 1802 goto err_out;
5fe45743 1803
26a28a0c 1804 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
5fe45743
CY		 1805 if (!ret) {
1806 clear_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1807 F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
5fe45743 1808 stat_dec_atomic_write(inode);
447135a8 1809 }
26a28a0c 1810 } else {
774e1b78 1811 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 1812 }
edb27dee 1813err_out:
2ef79ecb
CY		 1814 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
1815 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1816 ret = -EINVAL;
1817 }
0fac558b 1818 inode_unlock(inode);
88b88a66
JK		 1819 mnt_drop_write_file(filp);
1820 return ret;
1821}
1822
02a1335f
JK		 1823static int f2fs_ioc_start_volatile_write(struct file *filp)
1824{
1825 struct inode *inode = file_inode(filp);
f4c9c743 1826 int ret;
02a1335f
JK		 1827
1828 if (!inode_owner_or_capable(inode))
1829 return -EACCES;
1830
8ff0971f
CY		 1831 if (!S_ISREG(inode->i_mode))
1832 return -EINVAL;
1833
7fb17fe4
CY		 1834 ret = mnt_want_write_file(filp);
1835 if (ret)
1836 return ret;
1837
0fac558b
CY		 1838 inode_lock(inode);
1839
1e84371f 1840 if (f2fs_is_volatile_file(inode))
7fb17fe4 1841 goto out;
1e84371f 1842
f4c9c743
CY		 1843 ret = f2fs_convert_inline_inode(inode);
1844 if (ret)
7fb17fe4 1845 goto out;
b3d208f9 1846
648d50ba
CY		 1847 stat_inc_volatile_write(inode);
1848 stat_update_max_volatile_write(inode);
1849
91942321 1850 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 1851 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1852out:
0fac558b 1853 inode_unlock(inode);
7fb17fe4
CY		 1854 mnt_drop_write_file(filp);
1855 return ret;
02a1335f
JK		 1856}
1857
1e84371f
JK		 1858static int f2fs_ioc_release_volatile_write(struct file *filp)
1859{
1860 struct inode *inode = file_inode(filp);
7fb17fe4 1861 int ret;
1e84371f
JK		 1862
1863 if (!inode_owner_or_capable(inode))
1864 return -EACCES;
1865
7fb17fe4
CY		 1866 ret = mnt_want_write_file(filp);
1867 if (ret)
1868 return ret;
1869
0fac558b
CY		 1870 inode_lock(inode);
1871
1e84371f 1872 if (!f2fs_is_volatile_file(inode))
7fb17fe4 1873 goto out;
1e84371f 1874
7fb17fe4
CY		 1875 if (!f2fs_is_first_block_written(inode)) {
1876 ret = truncate_partial_data_page(inode, 0, true);
1877 goto out;
1878 }
3c6c2beb 1879
7fb17fe4
CY		 1880 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1881out:
0fac558b 1882 inode_unlock(inode);
7fb17fe4
CY		 1883 mnt_drop_write_file(filp);
1884 return ret;
1e84371f
JK		 1885}
1886
1887static int f2fs_ioc_abort_volatile_write(struct file *filp)
1888{
1889 struct inode *inode = file_inode(filp);
1890 int ret;
1891
1892 if (!inode_owner_or_capable(inode))
1893 return -EACCES;
1894
1895 ret = mnt_want_write_file(filp);
1896 if (ret)
1897 return ret;
1898
0fac558b
CY		 1899 inode_lock(inode);
1900
26dc3d44 1901 if (f2fs_is_atomic_file(inode))
4d57b86d 1902 f2fs_drop_inmem_pages(inode);
732d5648 1903 if (f2fs_is_volatile_file(inode)) {
91942321 1904 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 1905 stat_dec_volatile_write(inode);
608514de 1906 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 1907 }
de6a8ec9 1908
455e3a58
JK		 1909 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1910
0fac558b
CY		 1911 inode_unlock(inode);
1912
1e84371f 1913 mnt_drop_write_file(filp);
d0239e1b 1914 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 1915 return ret;
1916}
1917
1abff93d
JK		 1918static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1919{
1920 struct inode *inode = file_inode(filp);
1921 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1922 struct super_block *sb = sbi->sb;
1923 __u32 in;
2a96d8ad 1924 int ret = 0;
1abff93d
JK		 1925
1926 if (!capable(CAP_SYS_ADMIN))
1927 return -EPERM;
1928
1929 if (get_user(in, (__u32 __user *)arg))
1930 return -EFAULT;
1931
60b2b4ee
ST		 1932 if (in != F2FS_GOING_DOWN_FULLSYNC) {
1933 ret = mnt_want_write_file(filp);
1934 if (ret)
1935 return ret;
1936 }
7fb17fe4 1937
1abff93d
JK		 1938 switch (in) {
1939 case F2FS_GOING_DOWN_FULLSYNC:
1940 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 1941 if (IS_ERR(sb)) {
1942 ret = PTR_ERR(sb);
1943 goto out;
1944 }
1945 if (sb) {
38f91ca8 1946 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 1947 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 1948 thaw_bdev(sb->s_bdev, sb);
1949 }
1950 break;
1951 case F2FS_GOING_DOWN_METASYNC:
1952 /* do checkpoint only */
d027c484
CY		 1953 ret = f2fs_sync_fs(sb, 1);
1954 if (ret)
1955 goto out;
38f91ca8 1956 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 1957 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d
JK		 1958 break;
1959 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 1960 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 1961 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
1abff93d 1962 break;
c912a829 1963 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 1964 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 1965 f2fs_stop_checkpoint(sbi, false);
83a3bfdb 1966 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
c912a829 1967 break;
0cd6d9b0
JK		 1968 case F2FS_GOING_DOWN_NEED_FSCK:
1969 set_sbi_flag(sbi, SBI_NEED_FSCK);
db610a64
JK		 1970 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
1971 set_sbi_flag(sbi, SBI_IS_DIRTY);
0cd6d9b0
JK		 1972 /* do checkpoint only */
1973 ret = f2fs_sync_fs(sb, 1);
db610a64 1974 goto out;
1abff93d 1975 default:
7fb17fe4
CY		 1976 ret = -EINVAL;
1977 goto out;
1abff93d 1978 }
7950e9ac 1979
4d57b86d
CY		 1980 f2fs_stop_gc_thread(sbi);
1981 f2fs_stop_discard_thread(sbi);
7950e9ac 1982
4d57b86d 1983 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 1984 clear_opt(sbi, DISCARD);
1985
d0239e1b 1986 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 1987out:
60b2b4ee
ST		 1988 if (in != F2FS_GOING_DOWN_FULLSYNC)
1989 mnt_drop_write_file(filp);
7fb17fe4 1990 return ret;
1abff93d
JK		 1991}
1992
52656e6c
JK		 1993static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1994{
1995 struct inode *inode = file_inode(filp);
1996 struct super_block *sb = inode->i_sb;
1997 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1998 struct fstrim_range range;
1999 int ret;
4b2fecc8 2000
52656e6c
JK		 2001 if (!capable(CAP_SYS_ADMIN))
2002 return -EPERM;
4b2fecc8 2003
7d20c8ab 2004 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
52656e6c 2005 return -EOPNOTSUPP;
4b2fecc8 2006
52656e6c
JK		 2007 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2008 sizeof(range)))
2009 return -EFAULT;
4b2fecc8 2010
7fb17fe4
CY		 2011 ret = mnt_want_write_file(filp);
2012 if (ret)
2013 return ret;
2014
52656e6c
JK		 2015 range.minlen = max((unsigned int)range.minlen,
2016 q->limits.discard_granularity);
2017 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 2018 mnt_drop_write_file(filp);
52656e6c
JK		 2019 if (ret < 0)
2020 return ret;
4b2fecc8 2021
52656e6c
JK		 2022 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2023 sizeof(range)))
2024 return -EFAULT;
d0239e1b 2025 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 2026 return 0;
2027}
2028
f424f664
JK		 2029static bool uuid_is_nonzero(__u8 u[16])
2030{
2031 int i;
2032
2033 for (i = 0; i < 16; i++)
2034 if (u[i])
2035 return true;
2036 return false;
2037}
2038
2039static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2040{
f424f664
JK		 2041 struct inode *inode = file_inode(filp);
2042
7beb01f7 2043 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
ead710b7
CY		 2044 return -EOPNOTSUPP;
2045
d0239e1b 2046 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 2047
db717d8e 2048 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 2049}
2050
2051static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2052{
7beb01f7 2053 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
ead710b7 2054 return -EOPNOTSUPP;
db717d8e 2055 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 2056}
2057
2058static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2059{
2060 struct inode *inode = file_inode(filp);
2061 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2062 int err;
2063
7beb01f7 2064 if (!f2fs_sb_has_encrypt(sbi))
f424f664
JK		 2065 return -EOPNOTSUPP;
2066
f424f664
JK		 2067 err = mnt_want_write_file(filp);
2068 if (err)
2069 return err;
2070
846ae671 2071 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2072
2073 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2074 goto got_it;
2075
f424f664
JK		 2076 /* update superblock with uuid */
2077 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2078
c5bda1c8 2079 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2080 if (err) {
2081 /* undo new data */
2082 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2083 goto out_err;
f424f664
JK		 2084 }
2085got_it:
2086 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2087 16))
d0d3f1b3
CY		 2088 err = -EFAULT;
2089out_err:
846ae671 2090 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2091 mnt_drop_write_file(filp);
2092 return err;
f424f664
JK		 2093}
2094
c1c1b583
CY		 2095static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2096{
2097 struct inode *inode = file_inode(filp);
2098 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2099 __u32 sync;
7fb17fe4 2100 int ret;
c1c1b583
CY		 2101
2102 if (!capable(CAP_SYS_ADMIN))
2103 return -EPERM;
2104
d530d4d8 2105 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2106 return -EFAULT;
2107
d530d4d8
CY		 2108 if (f2fs_readonly(sbi->sb))
2109 return -EROFS;
c1c1b583 2110
7fb17fe4
CY		 2111 ret = mnt_want_write_file(filp);
2112 if (ret)
2113 return ret;
2114
d530d4d8 2115 if (!sync) {
7fb17fe4
CY		 2116 if (!mutex_trylock(&sbi->gc_mutex)) {
2117 ret = -EBUSY;
2118 goto out;
2119 }
d530d4d8
CY		 2120 } else {
2121 mutex_lock(&sbi->gc_mutex);
c1c1b583
CY		 2122 }
2123
e066b83c 2124 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2125out:
2126 mnt_drop_write_file(filp);
2127 return ret;
c1c1b583
CY		 2128}
2129
34dc77ad
JK		 2130static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2131{
2132 struct inode *inode = file_inode(filp);
2133 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2134 struct f2fs_gc_range range;
2135 u64 end;
2136 int ret;
2137
2138 if (!capable(CAP_SYS_ADMIN))
2139 return -EPERM;
2140
2141 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2142 sizeof(range)))
2143 return -EFAULT;
2144
2145 if (f2fs_readonly(sbi->sb))
2146 return -EROFS;
2147
b82f6e34
YH		 2148 end = range.start + range.len;
2149 if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) {
2150 return -EINVAL;
2151 }
2152
34dc77ad
JK		 2153 ret = mnt_want_write_file(filp);
2154 if (ret)
2155 return ret;
2156
34dc77ad
JK		 2157do_more:
2158 if (!range.sync) {
2159 if (!mutex_trylock(&sbi->gc_mutex)) {
2160 ret = -EBUSY;
2161 goto out;
2162 }
2163 } else {
2164 mutex_lock(&sbi->gc_mutex);
2165 }
2166
2167 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
67b0e42b 2168 range.start += BLKS_PER_SEC(sbi);
34dc77ad
JK		 2169 if (range.start <= end)
2170 goto do_more;
2171out:
2172 mnt_drop_write_file(filp);
2173 return ret;
2174}
2175
059c0648 2176static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2177{
2178 struct inode *inode = file_inode(filp);
2179 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2180 int ret;
456b88e4
CY		 2181
2182 if (!capable(CAP_SYS_ADMIN))
2183 return -EPERM;
2184
2185 if (f2fs_readonly(sbi->sb))
2186 return -EROFS;
2187
4354994f
DR		 2188 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2189 f2fs_msg(sbi->sb, KERN_INFO,
2190 "Skipping Checkpoint. Checkpoints currently disabled.");
2191 return -EINVAL;
2192 }
2193
7fb17fe4
CY		 2194 ret = mnt_want_write_file(filp);
2195 if (ret)
2196 return ret;
2197
2198 ret = f2fs_sync_fs(sbi->sb, 1);
2199
2200 mnt_drop_write_file(filp);
2201 return ret;
456b88e4
CY		 2202}
2203
d323d005
CY		 2204static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2205 struct file *filp,
2206 struct f2fs_defragment *range)
2207{
2208 struct inode *inode = file_inode(filp);
f3d98e74 2209 struct f2fs_map_blocks map = { .m_next_extent = NULL,
f4f0b677
JZ		 2210 .m_seg_type = NO_CHECK_TYPE ,
2211 .m_may_create = false };
1061fd48 2212 struct extent_info ei = {0, 0, 0};
f3d98e74 2213 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2214 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2215 unsigned int total = 0, sec_num;
d323d005
CY		 2216 block_t blk_end = 0;
2217 bool fragmented = false;
2218 int err;
2219
2220 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2221 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2222 return -EINVAL;
2223
09cbfeaf
KS		 2224 pg_start = range->start >> PAGE_SHIFT;
2225 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2226
2c4db1a6 2227 f2fs_balance_fs(sbi, true);
d323d005 2228
5955102c 2229 inode_lock(inode);
d323d005
CY		 2230
2231 /* writeback all dirty pages in the range */
2232 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2233 range->start + range->len - 1);
d323d005
CY		 2234 if (err)
2235 goto out;
2236
2237 /*
2238 * lookup mapping info in extent cache, skip defragmenting if physical
2239 * block addresses are continuous.
2240 */
2241 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2242 if (ei.fofs + ei.len >= pg_end)
2243 goto out;
2244 }
2245
2246 map.m_lblk = pg_start;
f3d98e74 2247 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2248
2249 /*
2250 * lookup mapping info in dnode page cache, skip defragmenting if all
2251 * physical block addresses are continuous even if there are hole(s)
2252 * in logical blocks.
2253 */
2254 while (map.m_lblk < pg_end) {
a1c1e9b7 2255 map.m_len = pg_end - map.m_lblk;
f2220c7f 2256 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2257 if (err)
2258 goto out;
2259
2260 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2261 map.m_lblk = next_pgofs;
d323d005
CY		 2262 continue;
2263 }
2264
25a912e5 2265 if (blk_end && blk_end != map.m_pblk)
d323d005 2266 fragmented = true;
25a912e5
CY		 2267
2268 /* record total count of block that we're going to move */
2269 total += map.m_len;
2270
d323d005
CY		 2271 blk_end = map.m_pblk + map.m_len;
2272
2273 map.m_lblk += map.m_len;
d323d005
CY		 2274 }
2275
2276 if (!fragmented)
2277 goto out;
2278
25a912e5 2279 sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
d323d005
CY		 2280
2281 /*
2282 * make sure there are enough free section for LFS allocation, this can
2283 * avoid defragment running in SSR mode when free section are allocated
2284 * intensively
2285 */
7f3037a5 2286 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2287 err = -EAGAIN;
2288 goto out;
2289 }
2290
25a912e5
CY		 2291 map.m_lblk = pg_start;
2292 map.m_len = pg_end - pg_start;
2293 total = 0;
2294
d323d005
CY		 2295 while (map.m_lblk < pg_end) {
2296 pgoff_t idx;
2297 int cnt = 0;
2298
2299do_map:
a1c1e9b7 2300 map.m_len = pg_end - map.m_lblk;
f2220c7f 2301 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2302 if (err)
2303 goto clear_out;
2304
2305 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2306 map.m_lblk = next_pgofs;
d323d005
CY		 2307 continue;
2308 }
2309
91942321 2310 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2311
2312 idx = map.m_lblk;
2313 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2314 struct page *page;
2315
4d57b86d 2316 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2317 if (IS_ERR(page)) {
2318 err = PTR_ERR(page);
2319 goto clear_out;
2320 }
2321
2322 set_page_dirty(page);
2323 f2fs_put_page(page, 1);
2324
2325 idx++;
2326 cnt++;
2327 total++;
2328 }
2329
2330 map.m_lblk = idx;
d323d005
CY		 2331
2332 if (idx < pg_end && cnt < blk_per_seg)
2333 goto do_map;
2334
91942321 2335 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2336
2337 err = filemap_fdatawrite(inode->i_mapping);
2338 if (err)
2339 goto out;
2340 }
2341clear_out:
91942321 2342 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2343out:
5955102c 2344 inode_unlock(inode);
d323d005 2345 if (!err)
09cbfeaf 2346 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2347 return err;
2348}
2349
2350static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2351{
2352 struct inode *inode = file_inode(filp);
2353 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2354 struct f2fs_defragment range;
2355 int err;
2356
2357 if (!capable(CAP_SYS_ADMIN))
2358 return -EPERM;
2359
7eab0c0d 2360 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2361 return -EINVAL;
2362
d7563861
KM		 2363 if (f2fs_readonly(sbi->sb))
2364 return -EROFS;
d323d005
CY		 2365
2366 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2367 sizeof(range)))
2368 return -EFAULT;
d323d005
CY		 2369
2370 /* verify alignment of offset & size */
d7563861
KM		 2371 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2372 return -EINVAL;
d323d005 2373
1941d7bc 2374 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2375 sbi->max_file_blocks))
2376 return -EINVAL;
2377
2378 err = mnt_want_write_file(filp);
2379 if (err)
2380 return err;
1941d7bc 2381
d323d005 2382 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2383 mnt_drop_write_file(filp);
2384
d0239e1b 2385 f2fs_update_time(sbi, REQ_TIME);
d323d005 2386 if (err < 0)
d7563861 2387 return err;
d323d005
CY		 2388
2389 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2390 sizeof(range)))
d7563861
KM		 2391 return -EFAULT;
2392
2393 return 0;
d323d005
CY		 2394}
2395
4dd6f977
JK		 2396static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2397 struct file *file_out, loff_t pos_out, size_t len)
2398{
2399 struct inode *src = file_inode(file_in);
2400 struct inode *dst = file_inode(file_out);
2401 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2402 size_t olen = len, dst_max_i_size = 0;
2403 size_t dst_osize;
2404 int ret;
2405
2406 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2407 src->i_sb != dst->i_sb)
2408 return -EXDEV;
2409
2410 if (unlikely(f2fs_readonly(src->i_sb)))
2411 return -EROFS;
2412
fe8494bf
CY		 2413 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2414 return -EINVAL;
4dd6f977
JK		 2415
2416 if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
2417 return -EOPNOTSUPP;
2418
d95fd91c
FL		 2419 if (src == dst) {
2420 if (pos_in == pos_out)
2421 return 0;
2422 if (pos_out > pos_in && pos_out < pos_in + len)
2423 return -EINVAL;
2424 }
2425
4dd6f977 2426 inode_lock(src);
20a3d61d 2427 if (src != dst) {
bb06664a
CY		 2428 ret = -EBUSY;
2429 if (!inode_trylock(dst))
2430 goto out;
20a3d61d 2431 }
4dd6f977
JK		 2432
2433 ret = -EINVAL;
2434 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2435 goto out_unlock;
2436 if (len == 0)
2437 olen = len = src->i_size - pos_in;
2438 if (pos_in + len == src->i_size)
2439 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2440 if (len == 0) {
2441 ret = 0;
2442 goto out_unlock;
2443 }
2444
2445 dst_osize = dst->i_size;
2446 if (pos_out + olen > dst->i_size)
2447 dst_max_i_size = pos_out + olen;
2448
2449 /* verify the end result is block aligned */
2450 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2451 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2452 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2453 goto out_unlock;
2454
2455 ret = f2fs_convert_inline_inode(src);
2456 if (ret)
2457 goto out_unlock;
2458
2459 ret = f2fs_convert_inline_inode(dst);
2460 if (ret)
2461 goto out_unlock;
2462
2463 /* write out all dirty pages from offset */
2464 ret = filemap_write_and_wait_range(src->i_mapping,
2465 pos_in, pos_in + len);
2466 if (ret)
2467 goto out_unlock;
2468
2469 ret = filemap_write_and_wait_range(dst->i_mapping,
2470 pos_out, pos_out + len);
2471 if (ret)
2472 goto out_unlock;
2473
2474 f2fs_balance_fs(sbi, true);
6f8d4455
JK		 2475
2476 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2477 if (src != dst) {
2478 ret = -EBUSY;
2479 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2480 goto out_src;
2481 }
2482
4dd6f977 2483 f2fs_lock_op(sbi);
61e4da11
FL		 2484 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2485 pos_out >> F2FS_BLKSIZE_BITS,
2486 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2487
2488 if (!ret) {
2489 if (dst_max_i_size)
2490 f2fs_i_size_write(dst, dst_max_i_size);
2491 else if (dst_osize != dst->i_size)
2492 f2fs_i_size_write(dst, dst_osize);
2493 }
2494 f2fs_unlock_op(sbi);
6f8d4455
JK		 2495
2496 if (src != dst)
b2532c69 2497 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
6f8d4455
JK		 2498out_src:
2499 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2500out_unlock:
2501 if (src != dst)
4dd6f977 2502 inode_unlock(dst);
20a3d61d 2503out:
4dd6f977
JK		 2504 inode_unlock(src);
2505 return ret;
2506}
2507
2508static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2509{
2510 struct f2fs_move_range range;
2511 struct fd dst;
2512 int err;
2513
2514 if (!(filp->f_mode & FMODE_READ) ||
2515 !(filp->f_mode & FMODE_WRITE))
2516 return -EBADF;
2517
2518 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2519 sizeof(range)))
2520 return -EFAULT;
2521
2522 dst = fdget(range.dst_fd);
2523 if (!dst.file)
2524 return -EBADF;
2525
2526 if (!(dst.file->f_mode & FMODE_WRITE)) {
2527 err = -EBADF;
2528 goto err_out;
2529 }
2530
2531 err = mnt_want_write_file(filp);
2532 if (err)
2533 goto err_out;
2534
2535 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2536 range.pos_out, range.len);
2537
2538 mnt_drop_write_file(filp);
3cecfa5f
KM		 2539 if (err)
2540 goto err_out;
4dd6f977
JK		 2541
2542 if (copy_to_user((struct f2fs_move_range __user *)arg,
2543 &range, sizeof(range)))
2544 err = -EFAULT;
2545err_out:
2546 fdput(dst);
2547 return err;
2548}
2549
e066b83c
JK		 2550static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2551{
2552 struct inode *inode = file_inode(filp);
2553 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2554 struct sit_info *sm = SIT_I(sbi);
2555 unsigned int start_segno = 0, end_segno = 0;
2556 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2557 struct f2fs_flush_device range;
2558 int ret;
2559
2560 if (!capable(CAP_SYS_ADMIN))
2561 return -EPERM;
2562
2563 if (f2fs_readonly(sbi->sb))
2564 return -EROFS;
2565
4354994f
DR		 2566 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2567 return -EINVAL;
2568
e066b83c
JK		 2569 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2570 sizeof(range)))
2571 return -EFAULT;
2572
2573 if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num ||
2c70c5e3 2574 __is_large_section(sbi)) {
e066b83c
JK		 2575 f2fs_msg(sbi->sb, KERN_WARNING,
2576 "Can't flush %u in %d for segs_per_sec %u != 1\n",
2577 range.dev_num, sbi->s_ndevs,
2578 sbi->segs_per_sec);
2579 return -EINVAL;
2580 }
2581
2582 ret = mnt_want_write_file(filp);
2583 if (ret)
2584 return ret;
2585
2586 if (range.dev_num != 0)
2587 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2588 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2589
2590 start_segno = sm->last_victim[FLUSH_DEVICE];
2591 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2592 start_segno = dev_start_segno;
2593 end_segno = min(start_segno + range.segments, dev_end_segno);
2594
2595 while (start_segno < end_segno) {
2596 if (!mutex_trylock(&sbi->gc_mutex)) {
2597 ret = -EBUSY;
2598 goto out;
2599 }
2600 sm->last_victim[GC_CB] = end_segno + 1;
2601 sm->last_victim[GC_GREEDY] = end_segno + 1;
2602 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2603 ret = f2fs_gc(sbi, true, true, start_segno);
2604 if (ret == -EAGAIN)
2605 ret = 0;
2606 else if (ret < 0)
2607 break;
2608 start_segno++;
2609 }
2610out:
2611 mnt_drop_write_file(filp);
2612 return ret;
2613}
2614
e65ef207
JK		 2615static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2616{
2617 struct inode *inode = file_inode(filp);
2618 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2619
2620 /* Must validate to set it with SQLite behavior in Android. */
2621 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2622
2623 return put_user(sb_feature, (u32 __user *)arg);
2624}
e066b83c 2625
2c1d0305 2626#ifdef CONFIG_QUOTA
78130819
CY		 2627int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2628{
2629 struct dquot *transfer_to[MAXQUOTAS] = {};
2630 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2631 struct super_block *sb = sbi->sb;
2632 int err = 0;
2633
2634 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2635 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2636 err = __dquot_transfer(inode, transfer_to);
2637 if (err)
2638 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2639 dqput(transfer_to[PRJQUOTA]);
2640 }
2641 return err;
2642}
2643
2c1d0305
CY		 2644static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2645{
2646 struct inode *inode = file_inode(filp);
2647 struct f2fs_inode_info *fi = F2FS_I(inode);
2648 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2c1d0305
CY		 2649 struct page *ipage;
2650 kprojid_t kprojid;
2651 int err;
2652
7beb01f7 2653 if (!f2fs_sb_has_project_quota(sbi)) {
2c1d0305
CY		 2654 if (projid != F2FS_DEF_PROJID)
2655 return -EOPNOTSUPP;
2656 else
2657 return 0;
2658 }
2659
2660 if (!f2fs_has_extra_attr(inode))
2661 return -EOPNOTSUPP;
2662
2663 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2664
2665 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2666 return 0;
2667
2c1d0305 2668 err = -EPERM;
2c1d0305
CY		 2669 /* Is it quota file? Do not allow user to mess with it */
2670 if (IS_NOQUOTA(inode))
c8e92757 2671 return err;
2c1d0305 2672
4d57b86d 2673 ipage = f2fs_get_node_page(sbi, inode->i_ino);
c8e92757
WS		 2674 if (IS_ERR(ipage))
2675 return PTR_ERR(ipage);
2c1d0305
CY		 2676
2677 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2678 i_projid)) {
2679 err = -EOVERFLOW;
2680 f2fs_put_page(ipage, 1);
c8e92757 2681 return err;
2c1d0305
CY		 2682 }
2683 f2fs_put_page(ipage, 1);
2684
c22aecd7
CY		 2685 err = dquot_initialize(inode);
2686 if (err)
c8e92757 2687 return err;
2c1d0305 2688
78130819
CY		 2689 f2fs_lock_op(sbi);
2690 err = f2fs_transfer_project_quota(inode, kprojid);
2691 if (err)
2692 goto out_unlock;
2c1d0305
CY		 2693
2694 F2FS_I(inode)->i_projid = kprojid;
2695 inode->i_ctime = current_time(inode);
2c1d0305 2696 f2fs_mark_inode_dirty_sync(inode, true);
78130819
CY		 2697out_unlock:
2698 f2fs_unlock_op(sbi);
2c1d0305
CY		 2699 return err;
2700}
2701#else
78130819
CY		 2702int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2703{
2704 return 0;
2705}
2706
2c1d0305
CY		 2707static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2708{
2709 if (projid != F2FS_DEF_PROJID)
2710 return -EOPNOTSUPP;
2711 return 0;
2712}
2713#endif
2714
2715/* Transfer internal flags to xflags */
2716static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags)
2717{
2718 __u32 xflags = 0;
2719
59c84408 2720 if (iflags & F2FS_SYNC_FL)
2c1d0305 2721 xflags |= FS_XFLAG_SYNC;
59c84408 2722 if (iflags & F2FS_IMMUTABLE_FL)
2c1d0305 2723 xflags |= FS_XFLAG_IMMUTABLE;
59c84408 2724 if (iflags & F2FS_APPEND_FL)
2c1d0305 2725 xflags |= FS_XFLAG_APPEND;
59c84408 2726 if (iflags & F2FS_NODUMP_FL)
2c1d0305 2727 xflags |= FS_XFLAG_NODUMP;
59c84408 2728 if (iflags & F2FS_NOATIME_FL)
2c1d0305 2729 xflags |= FS_XFLAG_NOATIME;
59c84408 2730 if (iflags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 2731 xflags |= FS_XFLAG_PROJINHERIT;
2732 return xflags;
2733}
2734
2735#define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \
2736 FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \
2737 FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT)
2738
2c1d0305
CY		 2739/* Transfer xflags flags to internal */
2740static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags)
2741{
2742 unsigned long iflags = 0;
2743
2744 if (xflags & FS_XFLAG_SYNC)
59c84408 2745 iflags |= F2FS_SYNC_FL;
2c1d0305 2746 if (xflags & FS_XFLAG_IMMUTABLE)
59c84408 2747 iflags |= F2FS_IMMUTABLE_FL;
2c1d0305 2748 if (xflags & FS_XFLAG_APPEND)
59c84408 2749 iflags |= F2FS_APPEND_FL;
2c1d0305 2750 if (xflags & FS_XFLAG_NODUMP)
59c84408 2751 iflags |= F2FS_NODUMP_FL;
2c1d0305 2752 if (xflags & FS_XFLAG_NOATIME)
59c84408 2753 iflags |= F2FS_NOATIME_FL;
2c1d0305 2754 if (xflags & FS_XFLAG_PROJINHERIT)
59c84408 2755 iflags |= F2FS_PROJINHERIT_FL;
2c1d0305
CY		 2756
2757 return iflags;
2758}
2759
2760static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
2761{
2762 struct inode *inode = file_inode(filp);
2763 struct f2fs_inode_info *fi = F2FS_I(inode);
2764 struct fsxattr fa;
2765
2766 memset(&fa, 0, sizeof(struct fsxattr));
2767 fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags &
c807a7cb 2768 F2FS_FL_USER_VISIBLE);
2c1d0305 2769
7beb01f7 2770 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
2c1d0305
CY		 2771 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
2772 fi->i_projid);
2773
2774 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2775 return -EFAULT;
2776 return 0;
2777}
2778
c8e92757
WS		 2779static int f2fs_ioctl_check_project(struct inode *inode, struct fsxattr *fa)
2780{
2781 /*
2782 * Project Quota ID state is only allowed to change from within the init
2783 * namespace. Enforce that restriction only if we are trying to change
2784 * the quota ID state. Everything else is allowed in user namespaces.
2785 */
2786 if (current_user_ns() == &init_user_ns)
2787 return 0;
2788
2789 if (__kprojid_val(F2FS_I(inode)->i_projid) != fa->fsx_projid)
2790 return -EINVAL;
2791
2792 if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) {
2793 if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT))
2794 return -EINVAL;
2795 } else {
2796 if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT)
2797 return -EINVAL;
2798 }
2799
2800 return 0;
2801}
2802
2c1d0305
CY		 2803static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
2804{
2805 struct inode *inode = file_inode(filp);
2806 struct f2fs_inode_info *fi = F2FS_I(inode);
2807 struct fsxattr fa;
2808 unsigned int flags;
2809 int err;
2810
2811 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
2812 return -EFAULT;
2813
2814 /* Make sure caller has proper permission */
2815 if (!inode_owner_or_capable(inode))
2816 return -EACCES;
2817
2818 if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS)
2819 return -EOPNOTSUPP;
2820
2821 flags = f2fs_xflags_to_iflags(fa.fsx_xflags);
2822 if (f2fs_mask_flags(inode->i_mode, flags) != flags)
2823 return -EOPNOTSUPP;
2824
2825 err = mnt_want_write_file(filp);
2826 if (err)
2827 return err;
2828
2829 inode_lock(inode);
c8e92757
WS		 2830 err = f2fs_ioctl_check_project(inode, &fa);
2831 if (err)
2832 goto out;
2c1d0305
CY		 2833 flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) |
2834 (flags & F2FS_FL_XFLAG_VISIBLE);
2835 err = __f2fs_ioc_setflags(inode, flags);
2c1d0305 2836 if (err)
c8e92757 2837 goto out;
2c1d0305
CY		 2838
2839 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
c8e92757
WS		 2840out:
2841 inode_unlock(inode);
2842 mnt_drop_write_file(filp);
2843 return err;
2c1d0305 2844}
e066b83c 2845
1ad71a27
JK		 2846int f2fs_pin_file_control(struct inode *inode, bool inc)
2847{
2848 struct f2fs_inode_info *fi = F2FS_I(inode);
2849 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2850
2851 /* Use i_gc_failures for normal file as a risk signal. */
2852 if (inc)
2ef79ecb
CY		 2853 f2fs_i_gc_failures_write(inode,
2854 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 2855
2ef79ecb 2856 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
1ad71a27
JK		 2857 f2fs_msg(sbi->sb, KERN_WARNING,
2858 "%s: Enable GC = ino %lx after %x GC trials\n",
2ef79ecb
CY		 2859 __func__, inode->i_ino,
2860 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 2861 clear_inode_flag(inode, FI_PIN_FILE);
2862 return -EAGAIN;
2863 }
2864 return 0;
2865}
2866
2867static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
2868{
2869 struct inode *inode = file_inode(filp);
2870 __u32 pin;
2871 int ret = 0;
2872
2873 if (!inode_owner_or_capable(inode))
2874 return -EACCES;
2875
2876 if (get_user(pin, (__u32 __user *)arg))
2877 return -EFAULT;
2878
2879 if (!S_ISREG(inode->i_mode))
2880 return -EINVAL;
2881
2882 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
2883 return -EROFS;
2884
2885 ret = mnt_want_write_file(filp);
2886 if (ret)
2887 return ret;
2888
2889 inode_lock(inode);
2890
4d57b86d 2891 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 2892 ret = -EINVAL;
2893 goto out;
2894 }
2895
1ad71a27
JK		 2896 if (!pin) {
2897 clear_inode_flag(inode, FI_PIN_FILE);
30933364 2898 f2fs_i_gc_failures_write(inode, 0);
1ad71a27
JK		 2899 goto done;
2900 }
2901
2902 if (f2fs_pin_file_control(inode, false)) {
2903 ret = -EAGAIN;
2904 goto out;
2905 }
2906 ret = f2fs_convert_inline_inode(inode);
2907 if (ret)
2908 goto out;
2909
2910 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 2911 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 2912done:
2913 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2914out:
2915 inode_unlock(inode);
2916 mnt_drop_write_file(filp);
2917 return ret;
2918}
2919
2920static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
2921{
2922 struct inode *inode = file_inode(filp);
2923 __u32 pin = 0;
2924
2925 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 2926 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 2927 return put_user(pin, (u32 __user *)arg);
2928}
2929
c4020b2d
CY		 2930int f2fs_precache_extents(struct inode *inode)
2931{
2932 struct f2fs_inode_info *fi = F2FS_I(inode);
2933 struct f2fs_map_blocks map;
2934 pgoff_t m_next_extent;
2935 loff_t end;
2936 int err;
2937
2938 if (is_inode_flag_set(inode, FI_NO_EXTENT))
2939 return -EOPNOTSUPP;
2940
2941 map.m_lblk = 0;
2942 map.m_next_pgofs = NULL;
2943 map.m_next_extent = &m_next_extent;
2944 map.m_seg_type = NO_CHECK_TYPE;
f4f0b677 2945 map.m_may_create = false;
c4020b2d
CY		 2946 end = F2FS_I_SB(inode)->max_file_blocks;
2947
2948 while (map.m_lblk < end) {
2949 map.m_len = end - map.m_lblk;
2950
b2532c69 2951 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 2952 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 2953 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 2954 if (err)
2955 return err;
2956
2957 map.m_lblk = m_next_extent;
2958 }
2959
2960 return err;
2961}
2962
2963static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
2964{
2965 return f2fs_precache_extents(file_inode(filp));
2966}
2967
52656e6c
JK		 2968long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2969{
1f227a3e
JK		 2970 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
2971 return -EIO;
2972
52656e6c
JK		 2973 switch (cmd) {
2974 case F2FS_IOC_GETFLAGS:
2975 return f2fs_ioc_getflags(filp, arg);
2976 case F2FS_IOC_SETFLAGS:
2977 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 2978 case F2FS_IOC_GETVERSION:
2979 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 2980 case F2FS_IOC_START_ATOMIC_WRITE:
2981 return f2fs_ioc_start_atomic_write(filp);
2982 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2983 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 2984 case F2FS_IOC_START_VOLATILE_WRITE:
2985 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 2986 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2987 return f2fs_ioc_release_volatile_write(filp);
2988 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2989 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 2990 case F2FS_IOC_SHUTDOWN:
2991 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 2992 case FITRIM:
2993 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 2994 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2995 return f2fs_ioc_set_encryption_policy(filp, arg);
2996 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2997 return f2fs_ioc_get_encryption_policy(filp, arg);
2998 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2999 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
c1c1b583
CY		 3000 case F2FS_IOC_GARBAGE_COLLECT:
3001 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 3002 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3003 return f2fs_ioc_gc_range(filp, arg);
456b88e4 3004 case F2FS_IOC_WRITE_CHECKPOINT:
059c0648 3005 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 3006 case F2FS_IOC_DEFRAGMENT:
3007 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 3008 case F2FS_IOC_MOVE_RANGE:
3009 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 3010 case F2FS_IOC_FLUSH_DEVICE:
3011 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 3012 case F2FS_IOC_GET_FEATURES:
3013 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 3014 case F2FS_IOC_FSGETXATTR:
3015 return f2fs_ioc_fsgetxattr(filp, arg);
3016 case F2FS_IOC_FSSETXATTR:
3017 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 3018 case F2FS_IOC_GET_PIN_FILE:
3019 return f2fs_ioc_get_pin_file(filp, arg);
3020 case F2FS_IOC_SET_PIN_FILE:
3021 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 3022 case F2FS_IOC_PRECACHE_EXTENTS:
3023 return f2fs_ioc_precache_extents(filp, arg);
fbfa2cc5
JK		 3024 default:
3025 return -ENOTTY;
3026 }
3027}
3028
fcc85a4d
JK		 3029static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
3030{
b439b103
JK		 3031 struct file *file = iocb->ki_filp;
3032 struct inode *inode = file_inode(file);
3033 ssize_t ret;
fcc85a4d 3034
1f227a3e
JK		 3035 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
3036 return -EIO;
3037
b91050a8
HL		 3038 if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT))
3039 return -EINVAL;
3040
3041 if (!inode_trylock(inode)) {
3042 if (iocb->ki_flags & IOCB_NOWAIT)
3043 return -EAGAIN;
3044 inode_lock(inode);
3045 }
3046
b439b103
JK		 3047 ret = generic_write_checks(iocb, from);
3048 if (ret > 0) {
dc7a10dd
JK		 3049 bool preallocated = false;
3050 size_t target_size = 0;
dc91de78 3051 int err;
a7de6086 3052
dc91de78
JK		 3053 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
3054 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 3055
b91050a8
HL		 3056 if ((iocb->ki_flags & IOCB_NOWAIT) &&
3057 (iocb->ki_flags & IOCB_DIRECT)) {
3058 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
3059 iov_iter_count(from)) ||
3060 f2fs_has_inline_data(inode) ||
f847c699
CY		 3061 f2fs_force_buffered_io(inode,
3062 iocb, from)) {
cba41be0
YH		 3063 clear_inode_flag(inode,
3064 FI_NO_PREALLOC);
b91050a8
HL		 3065 inode_unlock(inode);
3066 return -EAGAIN;
3067 }
3068
3069 } else {
dc7a10dd
JK		 3070 preallocated = true;
3071 target_size = iocb->ki_pos + iov_iter_count(from);
3072
b91050a8
HL		 3073 err = f2fs_preallocate_blocks(iocb, from);
3074 if (err) {
3075 clear_inode_flag(inode, FI_NO_PREALLOC);
3076 inode_unlock(inode);
3077 return err;
3078 }
9dfa1baf 3079 }
a7de6086 3080 ret = __generic_file_write_iter(iocb, from);
dc91de78 3081 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 3082
dc7a10dd
JK		 3083 /* if we couldn't write data, we should deallocate blocks. */
3084 if (preallocated && i_size_read(inode) < target_size)
3085 f2fs_truncate(inode);
3086
b0af6d49
CY		 3087 if (ret > 0)
3088 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 3089 }
3090 inode_unlock(inode);
3091
e2592217
CH		 3092 if (ret > 0)
3093 ret = generic_write_sync(iocb, ret);
b439b103 3094 return ret;
fcc85a4d
JK		 3095}
3096
e9750824
NJ		 3097#ifdef CONFIG_COMPAT
3098long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3099{
3100 switch (cmd) {
3101 case F2FS_IOC32_GETFLAGS:
3102 cmd = F2FS_IOC_GETFLAGS;
3103 break;
3104 case F2FS_IOC32_SETFLAGS:
3105 cmd = F2FS_IOC_SETFLAGS;
3106 break;
04ef4b62
CY		 3107 case F2FS_IOC32_GETVERSION:
3108 cmd = F2FS_IOC_GETVERSION;
3109 break;
3110 case F2FS_IOC_START_ATOMIC_WRITE:
3111 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3112 case F2FS_IOC_START_VOLATILE_WRITE:
3113 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3114 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3115 case F2FS_IOC_SHUTDOWN:
3116 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3117 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3118 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3119 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 3120 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 3121 case F2FS_IOC_WRITE_CHECKPOINT:
3122 case F2FS_IOC_DEFRAGMENT:
4dd6f977 3123 case F2FS_IOC_MOVE_RANGE:
e066b83c 3124 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 3125 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 3126 case F2FS_IOC_FSGETXATTR:
3127 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 3128 case F2FS_IOC_GET_PIN_FILE:
3129 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 3130 case F2FS_IOC_PRECACHE_EXTENTS:
4dd6f977 3131 break;
e9750824
NJ		 3132 default:
3133 return -ENOIOCTLCMD;
3134 }
3135 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3136}
3137#endif
3138
fbfa2cc5 3139const struct file_operations f2fs_file_operations = {
267378d4 3140 .llseek = f2fs_llseek,
aad4f8bb 3141 .read_iter = generic_file_read_iter,
fcc85a4d
JK		 3142 .write_iter = f2fs_file_write_iter,
3143 .open = f2fs_file_open,
12662234 3144 .release = f2fs_release_file,
fbfa2cc5 3145 .mmap = f2fs_file_mmap,
7a10f017 3146 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3147 .fsync = f2fs_sync_file,
3148 .fallocate = f2fs_fallocate,
3149 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3150#ifdef CONFIG_COMPAT
3151 .compat_ioctl = f2fs_compat_ioctl,
3152#endif
fbfa2cc5 3153 .splice_read = generic_file_splice_read,
8d020765 3154 .splice_write = iter_file_splice_write,
fbfa2cc5 3155};
Linux 6.x block layer and io_uring tree(s)