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f2fs: check if inmem_pages list is empty correctly
[linux-block.git] / fs / f2fs / file.c
CommitLineData
0a8165d7 1/*
fbfa2cc5
JK		 2 * fs/f2fs/file.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/stat.h>
14#include <linux/buffer_head.h>
15#include <linux/writeback.h>
ae51fb31 16#include <linux/blkdev.h>
fbfa2cc5
JK		 17#include <linux/falloc.h>
18#include <linux/types.h>
e9750824 19#include <linux/compat.h>
fbfa2cc5
JK		 20#include <linux/uaccess.h>
21#include <linux/mount.h>
7f7670fe 22#include <linux/pagevec.h>
dc91de78 23#include <linux/uio.h>
8da4b8c4 24#include <linux/uuid.h>
4dd6f977 25#include <linux/file.h>
fbfa2cc5
JK		 26
27#include "f2fs.h"
28#include "node.h"
29#include "segment.h"
30#include "xattr.h"
31#include "acl.h"
c1c1b583 32#include "gc.h"
db9f7c1a 33#include "trace.h"
a2a4a7e4 34#include <trace/events/f2fs.h>
fbfa2cc5 35
ea4d479b 36static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
5a3a2d83
QS		 37{
38 struct inode *inode = file_inode(vmf->vma->vm_file);
ea4d479b 39 vm_fault_t ret;
5a3a2d83
QS		 40
41 down_read(&F2FS_I(inode)->i_mmap_sem);
ea4d479b 42 ret = filemap_fault(vmf);
5a3a2d83
QS		 43 up_read(&F2FS_I(inode)->i_mmap_sem);
44
ea4d479b 45 return ret;
5a3a2d83
QS		 46}
47
ea4d479b 48static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
fbfa2cc5
JK		 49{
50 struct page *page = vmf->page;
11bac800 51 struct inode *inode = file_inode(vmf->vma->vm_file);
4081363f 52 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5 53 struct dnode_of_data dn;
e479556b 54 int err;
fbfa2cc5 55
1f227a3e
JK		 56 if (unlikely(f2fs_cp_error(sbi))) {
57 err = -EIO;
58 goto err;
59 }
60
fbfa2cc5 61 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 62
63 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 64
fbfa2cc5 65 /* block allocation */
e479556b 66 f2fs_lock_op(sbi);
b3d208f9 67 set_new_dnode(&dn, inode, NULL, NULL, 0);
b600965c 68 err = f2fs_reserve_block(&dn, page->index);
9ba69cf9
JK		 69 if (err) {
70 f2fs_unlock_op(sbi);
b600965c 71 goto out;
9ba69cf9
JK		 72 }
73 f2fs_put_dnode(&dn);
74 f2fs_unlock_op(sbi);
fbfa2cc5 75
2c4db1a6 76 f2fs_balance_fs(sbi, dn.node_changed);
2a340760 77
11bac800 78 file_update_time(vmf->vma->vm_file);
5a3a2d83 79 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 80 lock_page(page);
6bacf52f 81 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 82 page_offset(page) > i_size_read(inode) ||
6bacf52f 83 !PageUptodate(page))) {
fbfa2cc5
JK		 84 unlock_page(page);
85 err = -EFAULT;
5a3a2d83 86 goto out_sem;
fbfa2cc5
JK		 87 }
88
89 /*
90 * check to see if the page is mapped already (no holes)
91 */
92 if (PageMappedToDisk(page))
9851e6e1 93 goto mapped;
fbfa2cc5
JK		 94
95 /* page is wholly or partially inside EOF */
09cbfeaf 96 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 97 i_size_read(inode)) {
fbfa2cc5 98 unsigned offset;
09cbfeaf
KS		 99 offset = i_size_read(inode) & ~PAGE_MASK;
100 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 101 }
102 set_page_dirty(page);
237c0790
JK		 103 if (!PageUptodate(page))
104 SetPageUptodate(page);
fbfa2cc5 105
b0af6d49
CY		 106 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
107
e943a10d 108 trace_f2fs_vm_page_mkwrite(page, DATA);
9851e6e1
NJ		 109mapped:
110 /* fill the page */
fec1d657 111 f2fs_wait_on_page_writeback(page, DATA, false);
08b39fbd 112
6dbb1796
EB		 113 /* wait for GCed page writeback via META_MAPPING */
114 if (f2fs_post_read_required(inode))
d4c759ee 115 f2fs_wait_on_block_writeback(sbi, dn.data_blkaddr);
08b39fbd 116
5a3a2d83
QS		 117out_sem:
118 up_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 119out:
120 sb_end_pagefault(inode->i_sb);
d0239e1b 121 f2fs_update_time(sbi, REQ_TIME);
1f227a3e 122err:
fbfa2cc5
JK		 123 return block_page_mkwrite_return(err);
124}
125
126static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 127 .fault = f2fs_filemap_fault,
f1820361 128 .map_pages = filemap_map_pages,
692bb55d 129 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 130};
131
354a3399
JK		 132static int get_parent_ino(struct inode *inode, nid_t *pino)
133{
134 struct dentry *dentry;
135
136 inode = igrab(inode);
137 dentry = d_find_any_alias(inode);
138 iput(inode);
139 if (!dentry)
140 return 0;
141
f0947e5c
JK		 142 *pino = parent_ino(dentry);
143 dput(dentry);
354a3399
JK		 144 return 1;
145}
146
a5fd5050 147static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 148{
4081363f 149 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 150 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 151
a5fd5050
CY		 152 if (!S_ISREG(inode->i_mode))
153 cp_reason = CP_NON_REGULAR;
154 else if (inode->i_nlink != 1)
155 cp_reason = CP_HARDLINK;
bbf156f7 156 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 157 cp_reason = CP_SB_NEED_CP;
9d1589ef 158 else if (file_wrong_pino(inode))
a5fd5050 159 cp_reason = CP_WRONG_PINO;
9d1589ef 160 else if (!space_for_roll_forward(sbi))
a5fd5050 161 cp_reason = CP_NO_SPC_ROLL;
9d1589ef 162 else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 163 cp_reason = CP_NODE_NEED_CP;
d5053a34 164 else if (test_opt(sbi, FASTBOOT))
a5fd5050 165 cp_reason = CP_FASTBOOT_MODE;
63189b78 166 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 167 cp_reason = CP_SPEC_LOG_NUM;
63189b78 168 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
93cf93f1 169 need_dentry_mark(sbi, inode->i_ino) &&
0a007b97
JK		 170 exist_written_data(sbi, F2FS_I(inode)->i_pino, TRANS_DIR_INO))
171 cp_reason = CP_RECOVER_DIR;
9d1589ef 172
a5fd5050 173 return cp_reason;
9d1589ef
CY		 174}
175
9c7bb702
CL		 176static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
177{
178 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
179 bool ret = false;
180 /* But we need to avoid that there are some inode updates */
181 if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino))
182 ret = true;
183 f2fs_put_page(i, 0);
184 return ret;
185}
186
51455b19
CL		 187static void try_to_fix_pino(struct inode *inode)
188{
189 struct f2fs_inode_info *fi = F2FS_I(inode);
190 nid_t pino;
191
192 down_write(&fi->i_sem);
51455b19
CL		 193 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
194 get_parent_ino(inode, &pino)) {
205b9822 195 f2fs_i_pino_write(inode, pino);
51455b19 196 file_got_pino(inode);
51455b19 197 }
ee6d182f 198 up_write(&fi->i_sem);
51455b19
CL		 199}
200
608514de
JK		 201static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
202 int datasync, bool atomic)
fbfa2cc5
JK		 203{
204 struct inode *inode = file->f_mapping->host;
4081363f 205 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 206 nid_t ino = inode->i_ino;
fbfa2cc5 207 int ret = 0;
a5fd5050 208 enum cp_reason_type cp_reason = 0;
fbfa2cc5 209 struct writeback_control wbc = {
c81bf1c8 210 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 211 .nr_to_write = LONG_MAX,
212 .for_reclaim = 0,
213 };
214
6bacf52f 215 if (unlikely(f2fs_readonly(inode->i_sb)))
1fa95b0b
NJ		 216 return 0;
217
a2a4a7e4 218 trace_f2fs_sync_file_enter(inode);
ea1aa12c
JK		 219
220 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 221 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 222 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 223 ret = file_write_and_wait_range(file, start, end);
91942321 224 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 225
a2a4a7e4 226 if (ret) {
a5fd5050 227 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 228 return ret;
a2a4a7e4 229 }
fbfa2cc5 230
9c7bb702 231 /* if the inode is dirty, let's recover all the time */
281518c6 232 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 233 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 234 goto go_write;
235 }
236
6d99ba41
JK		 237 /*
238 * if there is no written data, don't waste time to write recovery info.
239 */
91942321 240 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
2403c155 241 !exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 242
9c7bb702
CL		 243 /* it may call write_inode just prior to fsync */
244 if (need_inode_page_update(sbi, ino))
19c9c466 245 goto go_write;
19c9c466 246
91942321 247 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
2403c155 248 exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 249 goto flush_out;
250 goto out;
251 }
19c9c466 252go_write:
e5d2385e
JK		 253 /*
254 * Both of fdatasync() and fsync() are able to be recovered from
255 * sudden-power-off.
256 */
91942321 257 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 258 cp_reason = need_do_checkpoint(inode);
91942321 259 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 260
a5fd5050 261 if (cp_reason) {
fbfa2cc5
JK		 262 /* all the dirty node pages should be flushed for POR */
263 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 264
51455b19
CL		 265 /*
266 * We've secured consistency through sync_fs. Following pino
267 * will be used only for fsynced inodes after checkpoint.
268 */
269 try_to_fix_pino(inode);
91942321
JK		 270 clear_inode_flag(inode, FI_APPEND_WRITE);
271 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 272 goto out;
273 }
88bd02c9 274sync_nodes:
26de9b11 275 ret = fsync_node_pages(sbi, inode, &wbc, atomic);
c267ec15
JK		 276 if (ret)
277 goto out;
51455b19 278
871f599f 279 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 280 if (unlikely(f2fs_cp_error(sbi))) {
281 ret = -EIO;
871f599f 282 goto out;
6d5a1495 283 }
871f599f 284
51455b19 285 if (need_inode_block_update(sbi, ino)) {
7c45729a 286 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 287 f2fs_write_inode(inode, NULL);
288 goto sync_nodes;
fbfa2cc5 289 }
51455b19 290
b6a245eb
JK		 291 /*
292 * If it's atomic_write, it's just fine to keep write ordering. So
293 * here we don't need to wait for node write completion, since we use
294 * node chain which serializes node blocks. If one of node writes are
295 * reordered, we can see simply broken chain, resulting in stopping
296 * roll-forward recovery. It means we'll recover all or none node blocks
297 * given fsync mark.
298 */
299 if (!atomic) {
300 ret = wait_on_node_pages_writeback(sbi, ino);
301 if (ret)
302 goto out;
303 }
51455b19
CL		 304
305 /* once recovery info is written, don't need to tack this */
a49324f1 306 remove_ino_entry(sbi, ino, APPEND_INO);
91942321 307 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 308flush_out:
d6290814 309 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 310 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f
CY		 311 if (!ret) {
312 remove_ino_entry(sbi, ino, UPDATE_INO);
313 clear_inode_flag(inode, FI_UPDATE_WRITE);
39d787be 314 remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 315 }
d0239e1b 316 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 317out:
a5fd5050 318 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 319 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 320 return ret;
321}
322
608514de
JK		 323int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
324{
1f227a3e
JK		 325 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
326 return -EIO;
608514de
JK		 327 return f2fs_do_sync_file(file, start, end, datasync, false);
328}
329
7f7670fe
JK		 330static pgoff_t __get_first_dirty_index(struct address_space *mapping,
331 pgoff_t pgofs, int whence)
332{
8faab642 333 struct page *page;
7f7670fe
JK		 334 int nr_pages;
335
336 if (whence != SEEK_DATA)
337 return 0;
338
339 /* find first dirty page index */
8faab642
JK		 340 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
341 1, &page);
342 if (!nr_pages)
343 return ULONG_MAX;
344 pgofs = page->index;
345 put_page(page);
7f7670fe
JK		 346 return pgofs;
347}
348
349static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
350 int whence)
351{
352 switch (whence) {
353 case SEEK_DATA:
354 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
355 (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR))
356 return true;
357 break;
358 case SEEK_HOLE:
359 if (blkaddr == NULL_ADDR)
360 return true;
361 break;
362 }
363 return false;
364}
365
267378d4
CY		 366static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
367{
368 struct inode *inode = file->f_mapping->host;
369 loff_t maxbytes = inode->i_sb->s_maxbytes;
370 struct dnode_of_data dn;
7f7670fe
JK		 371 pgoff_t pgofs, end_offset, dirty;
372 loff_t data_ofs = offset;
373 loff_t isize;
267378d4
CY		 374 int err = 0;
375
5955102c 376 inode_lock(inode);
267378d4
CY		 377
378 isize = i_size_read(inode);
379 if (offset >= isize)
380 goto fail;
381
382 /* handle inline data case */
622f28ae 383 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 384 if (whence == SEEK_HOLE)
385 data_ofs = isize;
386 goto found;
387 }
388
09cbfeaf 389 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 390
7f7670fe
JK		 391 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
392
09cbfeaf 393 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 394 set_new_dnode(&dn, inode, NULL, NULL, 0);
ac6f1999 395 err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 396 if (err && err != -ENOENT) {
397 goto fail;
398 } else if (err == -ENOENT) {
e1c42045 399 /* direct node does not exists */
267378d4 400 if (whence == SEEK_DATA) {
3cf45747 401 pgofs = get_next_page_offset(&dn, pgofs);
267378d4
CY		 402 continue;
403 } else {
404 goto found;
405 }
406 }
407
81ca7350 408 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 409
410 /* find data/hole in dnode block */
411 for (; dn.ofs_in_node < end_offset;
412 dn.ofs_in_node++, pgofs++,
09cbfeaf 413 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 414 block_t blkaddr;
7a2af766
CY		 415 blkaddr = datablock_addr(dn.inode,
416 dn.node_page, dn.ofs_in_node);
267378d4 417
7f7670fe 418 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
267378d4
CY		 419 f2fs_put_dnode(&dn);
420 goto found;
421 }
422 }
423 f2fs_put_dnode(&dn);
424 }
425
426 if (whence == SEEK_DATA)
427 goto fail;
267378d4 428found:
fe369bc8
JK		 429 if (whence == SEEK_HOLE && data_ofs > isize)
430 data_ofs = isize;
5955102c 431 inode_unlock(inode);
267378d4
CY		 432 return vfs_setpos(file, data_ofs, maxbytes);
433fail:
5955102c 434 inode_unlock(inode);
267378d4
CY		 435 return -ENXIO;
436}
437
438static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
439{
440 struct inode *inode = file->f_mapping->host;
441 loff_t maxbytes = inode->i_sb->s_maxbytes;
442
443 switch (whence) {
444 case SEEK_SET:
445 case SEEK_CUR:
446 case SEEK_END:
447 return generic_file_llseek_size(file, offset, whence,
448 maxbytes, i_size_read(inode));
449 case SEEK_DATA:
450 case SEEK_HOLE:
0b4c5afd
JK		 451 if (offset < 0)
452 return -ENXIO;
267378d4
CY		 453 return f2fs_seek_block(file, offset, whence);
454 }
455
456 return -EINVAL;
457}
458
fbfa2cc5
JK		 459static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
460{
b3d208f9 461 struct inode *inode = file_inode(file);
b9d777b8 462 int err;
b3d208f9 463
1f227a3e
JK		 464 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
465 return -EIO;
466
b3d208f9 467 /* we don't need to use inline_data strictly */
b9d777b8
JK		 468 err = f2fs_convert_inline_inode(inode);
469 if (err)
470 return err;
b3d208f9 471
fbfa2cc5
JK		 472 file_accessed(file);
473 vma->vm_ops = &f2fs_file_vm_ops;
474 return 0;
475}
476
fcc85a4d
JK		 477static int f2fs_file_open(struct inode *inode, struct file *filp)
478{
2e168c82 479 int err = fscrypt_file_open(inode, filp);
fcc85a4d 480
2e168c82
EB		 481 if (err)
482 return err;
b91050a8
HL		 483
484 filp->f_mode |= FMODE_NOWAIT;
485
0abd675e 486 return dquot_file_open(inode, filp);
fcc85a4d
JK		 487}
488
f652e9d9 489void truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 490{
4081363f 491 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 492 struct f2fs_node *raw_node;
19b2c30d 493 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 494 __le32 *addr;
7a2af766
CY		 495 int base = 0;
496
497 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
498 base = get_extra_isize(dn->inode);
fbfa2cc5 499
45590710 500 raw_node = F2FS_NODE(dn->node_page);
7a2af766 501 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 502
6c311ec6 503 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
fbfa2cc5
JK		 504 block_t blkaddr = le32_to_cpu(*addr);
505 if (blkaddr == NULL_ADDR)
506 continue;
507
e1509cf2 508 dn->data_blkaddr = NULL_ADDR;
216a620a 509 set_data_blkaddr(dn);
fbfa2cc5 510 invalidate_blocks(sbi, blkaddr);
3c6c2beb 511 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 512 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
fbfa2cc5
JK		 513 nr_free++;
514 }
19b2c30d 515
fbfa2cc5 516 if (nr_free) {
19b2c30d
CY		 517 pgoff_t fofs;
518 /*
519 * once we invalidate valid blkaddr in range [ofs, ofs + count],
520 * we will invalidate all blkaddr in the whole range.
521 */
522 fofs = start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 523 dn->inode) + ofs;
19b2c30d 524 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 525 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 526 }
527 dn->ofs_in_node = ofs;
51dd6249 528
d0239e1b 529 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 530 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
531 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 532}
533
534void truncate_data_blocks(struct dnode_of_data *dn)
535{
536 truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
537}
538
0bfcfcca 539static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 540 bool cache_only)
fbfa2cc5 541{
09cbfeaf
KS		 542 unsigned offset = from & (PAGE_SIZE - 1);
543 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 544 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 545 struct page *page;
546
43f3eae1 547 if (!offset && !cache_only)
b3d208f9 548 return 0;
fbfa2cc5 549
43f3eae1 550 if (cache_only) {
34b5d5c2 551 page = find_lock_page(mapping, index);
43f3eae1
JK		 552 if (page && PageUptodate(page))
553 goto truncate_out;
554 f2fs_put_page(page, 1);
b3d208f9 555 return 0;
43f3eae1 556 }
fbfa2cc5 557
a56c7c6f 558 page = get_lock_data_page(inode, index, true);
43f3eae1 559 if (IS_ERR(page))
a78aaa2c 560 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 561truncate_out:
fec1d657 562 f2fs_wait_on_page_writeback(page, DATA, true);
09cbfeaf 563 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 564
565 /* An encrypted inode should have a key and truncate the last page. */
566 f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode));
567 if (!cache_only)
0bfcfcca 568 set_page_dirty(page);
fbfa2cc5 569 f2fs_put_page(page, 1);
b3d208f9 570 return 0;
fbfa2cc5
JK		 571}
572
764aa3e9 573int truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 574{
4081363f 575 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 576 struct dnode_of_data dn;
577 pgoff_t free_from;
9ffe0fb5 578 int count = 0, err = 0;
b3d208f9 579 struct page *ipage;
0bfcfcca 580 bool truncate_page = false;
fbfa2cc5 581
51dd6249
NJ		 582 trace_f2fs_truncate_blocks_enter(inode, from);
583
df033caf 584 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 585
09210c97
CY		 586 if (free_from >= sbi->max_file_blocks)
587 goto free_partial;
588
764aa3e9
JK		 589 if (lock)
590 f2fs_lock_op(sbi);
9ffe0fb5 591
b3d208f9
JK		 592 ipage = get_node_page(sbi, inode->i_ino);
593 if (IS_ERR(ipage)) {
594 err = PTR_ERR(ipage);
595 goto out;
596 }
597
598 if (f2fs_has_inline_data(inode)) {
bd4667cb 599 truncate_inline_inode(inode, ipage, from);
b3d208f9 600 f2fs_put_page(ipage, 1);
0bfcfcca 601 truncate_page = true;
b3d208f9
JK		 602 goto out;
603 }
604
605 set_new_dnode(&dn, inode, ipage, NULL, 0);
79344efb 606 err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 607 if (err) {
608 if (err == -ENOENT)
609 goto free_next;
b3d208f9 610 goto out;
1ce86bf6
JK		 611 }
612
81ca7350 613 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 614
615 count -= dn.ofs_in_node;
9850cf4a 616 f2fs_bug_on(sbi, count < 0);
39936837 617
fbfa2cc5
JK		 618 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
619 truncate_data_blocks_range(&dn, count);
620 free_from += count;
621 }
622
623 f2fs_put_dnode(&dn);
624free_next:
625 err = truncate_inode_blocks(inode, free_from);
764d2c80
JK		 626out:
627 if (lock)
628 f2fs_unlock_op(sbi);
09210c97 629free_partial:
b3d208f9
JK		 630 /* lastly zero out the first data page */
631 if (!err)
0bfcfcca 632 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 633
51dd6249 634 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 635 return err;
636}
637
9a449e9c 638int f2fs_truncate(struct inode *inode)
fbfa2cc5 639{
b0154891
CY		 640 int err;
641
1f227a3e
JK		 642 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
643 return -EIO;
644
fbfa2cc5
JK		 645 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
646 S_ISLNK(inode->i_mode)))
b0154891 647 return 0;
fbfa2cc5 648
51dd6249
NJ		 649 trace_f2fs_truncate(inode);
650
14b44d23
JK		 651#ifdef CONFIG_F2FS_FAULT_INJECTION
652 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
653 f2fs_show_injection_info(FAULT_TRUNCATE);
654 return -EIO;
655 }
656#endif
92dffd01 657 /* we should check inline_data size */
b9d777b8 658 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 659 err = f2fs_convert_inline_inode(inode);
660 if (err)
661 return err;
92dffd01
JK		 662 }
663
9a449e9c 664 err = truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 665 if (err)
666 return err;
667
078cd827 668 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 669 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 670 return 0;
fbfa2cc5
JK		 671}
672
a528d35e 673int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 674 u32 request_mask, unsigned int query_flags)
fbfa2cc5 675{
a528d35e 676 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 677 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 678 struct f2fs_inode *ri;
1c6d8ee4
CY		 679 unsigned int flags;
680
1c1d35df
CY		 681 if (f2fs_has_extra_attr(inode) &&
682 f2fs_sb_has_inode_crtime(inode->i_sb) &&
683 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
684 stat->result_mask |= STATX_BTIME;
685 stat->btime.tv_sec = fi->i_crtime.tv_sec;
686 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
687 }
688
c807a7cb 689 flags = fi->i_flags & F2FS_FL_USER_VISIBLE;
59c84408 690 if (flags & F2FS_APPEND_FL)
1c6d8ee4 691 stat->attributes |= STATX_ATTR_APPEND;
59c84408 692 if (flags & F2FS_COMPR_FL)
1c6d8ee4
CY		 693 stat->attributes |= STATX_ATTR_COMPRESSED;
694 if (f2fs_encrypted_inode(inode))
695 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 696 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 697 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 698 if (flags & F2FS_NODUMP_FL)
1c6d8ee4
CY		 699 stat->attributes |= STATX_ATTR_NODUMP;
700
701 stat->attributes_mask |= (STATX_ATTR_APPEND |
702 STATX_ATTR_COMPRESSED |
703 STATX_ATTR_ENCRYPTED |
704 STATX_ATTR_IMMUTABLE |
705 STATX_ATTR_NODUMP);
706
fbfa2cc5 707 generic_fillattr(inode, stat);
5b4267d1
JK		 708
709 /* we need to show initial sectors used for inline_data/dentries */
710 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
711 f2fs_has_inline_dentry(inode))
712 stat->blocks += (stat->size + 511) >> 9;
713
fbfa2cc5
JK		 714 return 0;
715}
716
717#ifdef CONFIG_F2FS_FS_POSIX_ACL
718static void __setattr_copy(struct inode *inode, const struct iattr *attr)
719{
fbfa2cc5
JK		 720 unsigned int ia_valid = attr->ia_valid;
721
722 if (ia_valid & ATTR_UID)
723 inode->i_uid = attr->ia_uid;
724 if (ia_valid & ATTR_GID)
725 inode->i_gid = attr->ia_gid;
726 if (ia_valid & ATTR_ATIME)
727 inode->i_atime = timespec_trunc(attr->ia_atime,
728 inode->i_sb->s_time_gran);
729 if (ia_valid & ATTR_MTIME)
730 inode->i_mtime = timespec_trunc(attr->ia_mtime,
731 inode->i_sb->s_time_gran);
732 if (ia_valid & ATTR_CTIME)
733 inode->i_ctime = timespec_trunc(attr->ia_ctime,
734 inode->i_sb->s_time_gran);
735 if (ia_valid & ATTR_MODE) {
736 umode_t mode = attr->ia_mode;
737
738 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
739 mode &= ~S_ISGID;
91942321 740 set_acl_inode(inode, mode);
fbfa2cc5
JK		 741 }
742}
743#else
744#define __setattr_copy setattr_copy
745#endif
746
747int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
748{
2b0143b5 749 struct inode *inode = d_inode(dentry);
fbfa2cc5 750 int err;
c0ed4405 751 bool size_changed = false;
fbfa2cc5 752
1f227a3e
JK		 753 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
754 return -EIO;
755
31051c85 756 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 757 if (err)
758 return err;
759
20bb2479
EB		 760 err = fscrypt_prepare_setattr(dentry, attr);
761 if (err)
762 return err;
763
0abd675e
CY		 764 if (is_quota_modification(inode, attr)) {
765 err = dquot_initialize(inode);
766 if (err)
767 return err;
768 }
769 if ((attr->ia_valid & ATTR_UID &&
770 !uid_eq(attr->ia_uid, inode->i_uid)) ||
771 (attr->ia_valid & ATTR_GID &&
772 !gid_eq(attr->ia_gid, inode->i_gid))) {
773 err = dquot_transfer(inode, attr);
774 if (err)
775 return err;
776 }
777
09db6a2e 778 if (attr->ia_valid & ATTR_SIZE) {
3c454145 779 if (attr->ia_size <= i_size_read(inode)) {
5a3a2d83 780 down_write(&F2FS_I(inode)->i_mmap_sem);
09db6a2e 781 truncate_setsize(inode, attr->ia_size);
9a449e9c 782 err = f2fs_truncate(inode);
5a3a2d83 783 up_write(&F2FS_I(inode)->i_mmap_sem);
b0154891
CY		 784 if (err)
785 return err;
09db6a2e
CY		 786 } else {
787 /*
3c454145
CY		 788 * do not trim all blocks after i_size if target size is
789 * larger than i_size.
09db6a2e 790 */
5a3a2d83 791 down_write(&F2FS_I(inode)->i_mmap_sem);
3c454145 792 truncate_setsize(inode, attr->ia_size);
5a3a2d83 793 up_write(&F2FS_I(inode)->i_mmap_sem);
0cab80ee
CY		 794
795 /* should convert inline inode here */
b9d777b8 796 if (!f2fs_may_inline_data(inode)) {
0cab80ee
CY		 797 err = f2fs_convert_inline_inode(inode);
798 if (err)
799 return err;
800 }
078cd827 801 inode->i_mtime = inode->i_ctime = current_time(inode);
09db6a2e 802 }
c0ed4405 803
a0d00fad
CY		 804 down_write(&F2FS_I(inode)->i_sem);
805 F2FS_I(inode)->last_disk_size = i_size_read(inode);
806 up_write(&F2FS_I(inode)->i_sem);
807
c0ed4405 808 size_changed = true;
fbfa2cc5
JK		 809 }
810
811 __setattr_copy(inode, attr);
812
813 if (attr->ia_valid & ATTR_MODE) {
a6dda0e6 814 err = posix_acl_chmod(inode, get_inode_mode(inode));
91942321
JK		 815 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
816 inode->i_mode = F2FS_I(inode)->i_acl_mode;
817 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 818 }
819 }
820
c0ed4405
YH		 821 /* file size may changed here */
822 f2fs_mark_inode_dirty_sync(inode, size_changed);
15d04354
JK		 823
824 /* inode change will produce dirty node pages flushed by checkpoint */
825 f2fs_balance_fs(F2FS_I_SB(inode), true);
826
fbfa2cc5
JK		 827 return err;
828}
829
830const struct inode_operations f2fs_file_inode_operations = {
831 .getattr = f2fs_getattr,
832 .setattr = f2fs_setattr,
833 .get_acl = f2fs_get_acl,
a6dda0e6 834 .set_acl = f2fs_set_acl,
fbfa2cc5 835#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 836 .listxattr = f2fs_listxattr,
fbfa2cc5 837#endif
9ab70134 838 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 839};
840
6394328a 841static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 842 loff_t start, loff_t len)
843{
4081363f 844 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 845 struct page *page;
846
847 if (!len)
6394328a 848 return 0;
fbfa2cc5 849
2c4db1a6 850 f2fs_balance_fs(sbi, true);
bd43df02 851
e479556b 852 f2fs_lock_op(sbi);
64aa7ed9 853 page = get_new_data_page(inode, NULL, index, false);
e479556b 854 f2fs_unlock_op(sbi);
fbfa2cc5 855
6394328a
CY		 856 if (IS_ERR(page))
857 return PTR_ERR(page);
858
fec1d657 859 f2fs_wait_on_page_writeback(page, DATA, true);
6394328a
CY		 860 zero_user(page, start, len);
861 set_page_dirty(page);
862 f2fs_put_page(page, 1);
863 return 0;
fbfa2cc5
JK		 864}
865
866int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
867{
fbfa2cc5
JK		 868 int err;
869
ea58711e 870 while (pg_start < pg_end) {
fbfa2cc5 871 struct dnode_of_data dn;
ea58711e 872 pgoff_t end_offset, count;
9eaeba70 873
fbfa2cc5 874 set_new_dnode(&dn, inode, NULL, NULL, 0);
ea58711e 875 err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 876 if (err) {
ea58711e 877 if (err == -ENOENT) {
48ab25f4 878 pg_start = get_next_page_offset(&dn, pg_start);
fbfa2cc5 879 continue;
ea58711e 880 }
fbfa2cc5
JK		 881 return err;
882 }
883
81ca7350 884 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 885 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
886
887 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
888
889 truncate_data_blocks_range(&dn, count);
fbfa2cc5 890 f2fs_put_dnode(&dn);
ea58711e
CY		 891
892 pg_start += count;
fbfa2cc5
JK		 893 }
894 return 0;
895}
896
a66c7b2f 897static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 898{
899 pgoff_t pg_start, pg_end;
900 loff_t off_start, off_end;
b9d777b8 901 int ret;
fbfa2cc5 902
b9d777b8
JK		 903 ret = f2fs_convert_inline_inode(inode);
904 if (ret)
905 return ret;
9ffe0fb5 906
09cbfeaf
KS		 907 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
908 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 909
09cbfeaf
KS		 910 off_start = offset & (PAGE_SIZE - 1);
911 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 912
913 if (pg_start == pg_end) {
6394328a 914 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 915 off_end - off_start);
6394328a
CY		 916 if (ret)
917 return ret;
fbfa2cc5 918 } else {
6394328a
CY		 919 if (off_start) {
920 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 921 PAGE_SIZE - off_start);
6394328a
CY		 922 if (ret)
923 return ret;
924 }
925 if (off_end) {
926 ret = fill_zero(inode, pg_end, 0, off_end);
927 if (ret)
928 return ret;
929 }
fbfa2cc5
JK		 930
931 if (pg_start < pg_end) {
932 struct address_space *mapping = inode->i_mapping;
933 loff_t blk_start, blk_end;
4081363f 934 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 935
2c4db1a6 936 f2fs_balance_fs(sbi, true);
fbfa2cc5 937
09cbfeaf
KS		 938 blk_start = (loff_t)pg_start << PAGE_SHIFT;
939 blk_end = (loff_t)pg_end << PAGE_SHIFT;
5a3a2d83 940 down_write(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 941 truncate_inode_pages_range(mapping, blk_start,
942 blk_end - 1);
39936837 943
e479556b 944 f2fs_lock_op(sbi);
fbfa2cc5 945 ret = truncate_hole(inode, pg_start, pg_end);
e479556b 946 f2fs_unlock_op(sbi);
5a3a2d83 947 up_write(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 948 }
949 }
950
fbfa2cc5
JK		 951 return ret;
952}
953
0a2aa8fb
JK		 954static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
955 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 956{
957 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
958 struct dnode_of_data dn;
0a2aa8fb 959 int ret, done, i;
ecbaa406 960
0a2aa8fb 961next_dnode:
6e2c64ad 962 set_new_dnode(&dn, inode, NULL, NULL, 0);
0a2aa8fb 963 ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 964 if (ret && ret != -ENOENT) {
965 return ret;
966 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 967 if (dn.max_level == 0)
968 return -ENOENT;
969 done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len);
970 blkaddr += done;
971 do_replace += done;
972 goto next;
973 }
974
975 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
976 dn.ofs_in_node, len);
977 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 978 *blkaddr = datablock_addr(dn.inode,
979 dn.node_page, dn.ofs_in_node);
0a2aa8fb
JK		 980 if (!is_checkpointed_data(sbi, *blkaddr)) {
981
982 if (test_opt(sbi, LFS)) {
983 f2fs_put_dnode(&dn);
984 return -ENOTSUPP;
985 }
986
6e2c64ad 987 /* do not invalidate this block address */
f28b3434 988 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 989 *do_replace = 1;
b4ace337 990 }
6e2c64ad 991 }
0a2aa8fb
JK		 992 f2fs_put_dnode(&dn);
993next:
994 len -= done;
995 off += done;
996 if (len)
997 goto next_dnode;
998 return 0;
999}
b4ace337 1000
0a2aa8fb
JK		 1001static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1002 int *do_replace, pgoff_t off, int len)
1003{
1004 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1005 struct dnode_of_data dn;
1006 int ret, i;
b4ace337 1007
0a2aa8fb
JK		 1008 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1009 if (*do_replace == 0)
1010 continue;
b4ace337 1011
0a2aa8fb
JK		 1012 set_new_dnode(&dn, inode, NULL, NULL, 0);
1013 ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1014 if (ret) {
1015 dec_valid_block_count(sbi, inode, 1);
1016 invalidate_blocks(sbi, *blkaddr);
1017 } else {
1018 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1019 }
0a2aa8fb
JK		 1020 f2fs_put_dnode(&dn);
1021 }
1022 return 0;
1023}
1024
1025static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1026 block_t *blkaddr, int *do_replace,
1027 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1028{
1029 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1030 pgoff_t i = 0;
1031 int ret;
36abef4e 1032
0a2aa8fb
JK		 1033 while (i < len) {
1034 if (blkaddr[i] == NULL_ADDR && !full) {
1035 i++;
1036 continue;
6e2c64ad 1037 }
b4ace337 1038
0a2aa8fb
JK		 1039 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1040 struct dnode_of_data dn;
1041 struct node_info ni;
1042 size_t new_size;
1043 pgoff_t ilen;
b4ace337 1044
0a2aa8fb
JK		 1045 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1046 ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1047 if (ret)
1048 return ret;
b4ace337 1049
0a2aa8fb
JK		 1050 get_node_info(sbi, dn.nid, &ni);
1051 ilen = min((pgoff_t)
1052 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1053 dn.ofs_in_node, len - i);
1054 do {
7a2af766
CY		 1055 dn.data_blkaddr = datablock_addr(dn.inode,
1056 dn.node_page, dn.ofs_in_node);
0a2aa8fb
JK		 1057 truncate_data_blocks_range(&dn, 1);
1058
1059 if (do_replace[i]) {
1060 f2fs_i_blocks_write(src_inode,
0abd675e 1061 1, false, false);
0a2aa8fb 1062 f2fs_i_blocks_write(dst_inode,
0abd675e 1063 1, true, false);
0a2aa8fb
JK		 1064 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1065 blkaddr[i], ni.version, true, false);
1066
1067 do_replace[i] = 0;
1068 }
1069 dn.ofs_in_node++;
1070 i++;
1071 new_size = (dst + i) << PAGE_SHIFT;
1072 if (dst_inode->i_size < new_size)
1073 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1074 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1075
0a2aa8fb
JK		 1076 f2fs_put_dnode(&dn);
1077 } else {
1078 struct page *psrc, *pdst;
1079
1080 psrc = get_lock_data_page(src_inode, src + i, true);
1081 if (IS_ERR(psrc))
1082 return PTR_ERR(psrc);
1083 pdst = get_new_data_page(dst_inode, NULL, dst + i,
1084 true);
1085 if (IS_ERR(pdst)) {
1086 f2fs_put_page(psrc, 1);
1087 return PTR_ERR(pdst);
1088 }
1089 f2fs_copy_page(psrc, pdst);
1090 set_page_dirty(pdst);
1091 f2fs_put_page(pdst, 1);
6e2c64ad 1092 f2fs_put_page(psrc, 1);
b4ace337 1093
0a2aa8fb
JK		 1094 ret = truncate_hole(src_inode, src + i, src + i + 1);
1095 if (ret)
1096 return ret;
1097 i++;
1098 }
6e2c64ad
JK		 1099 }
1100 return 0;
0a2aa8fb 1101}
b4ace337 1102
0a2aa8fb
JK		 1103static int __exchange_data_block(struct inode *src_inode,
1104 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1105 pgoff_t len, bool full)
0a2aa8fb
JK		 1106{
1107 block_t *src_blkaddr;
1108 int *do_replace;
363cad7f 1109 pgoff_t olen;
0a2aa8fb
JK		 1110 int ret;
1111
363cad7f
JK		 1112 while (len) {
1113 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len);
0a2aa8fb 1114
628b3d14
CY		 1115 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1116 sizeof(block_t) * olen, GFP_KERNEL);
363cad7f
JK		 1117 if (!src_blkaddr)
1118 return -ENOMEM;
0a2aa8fb 1119
628b3d14
CY		 1120 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1121 sizeof(int) * olen, GFP_KERNEL);
363cad7f
JK		 1122 if (!do_replace) {
1123 kvfree(src_blkaddr);
1124 return -ENOMEM;
1125 }
0a2aa8fb 1126
363cad7f
JK		 1127 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1128 do_replace, src, olen);
1129 if (ret)
1130 goto roll_back;
0a2aa8fb 1131
363cad7f
JK		 1132 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1133 do_replace, src, dst, olen, full);
1134 if (ret)
1135 goto roll_back;
1136
1137 src += olen;
1138 dst += olen;
1139 len -= olen;
1140
1141 kvfree(src_blkaddr);
1142 kvfree(do_replace);
1143 }
0a2aa8fb
JK		 1144 return 0;
1145
1146roll_back:
1147 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len);
1148 kvfree(src_blkaddr);
1149 kvfree(do_replace);
6e2c64ad
JK		 1150 return ret;
1151}
b4ace337 1152
6e2c64ad
JK		 1153static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
1154{
1155 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1156 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
0a2aa8fb 1157 int ret;
6e2c64ad 1158
0a2aa8fb
JK		 1159 f2fs_balance_fs(sbi, true);
1160 f2fs_lock_op(sbi);
5f281fab
JK		 1161
1162 f2fs_drop_extent_tree(inode);
1163
0a2aa8fb
JK		 1164 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1165 f2fs_unlock_op(sbi);
b4ace337
CY		 1166 return ret;
1167}
1168
1169static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1170{
1171 pgoff_t pg_start, pg_end;
1172 loff_t new_size;
1173 int ret;
1174
b4ace337
CY		 1175 if (offset + len >= i_size_read(inode))
1176 return -EINVAL;
1177
1178 /* collapse range should be aligned to block size of f2fs. */
1179 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1180 return -EINVAL;
1181
b9d777b8
JK		 1182 ret = f2fs_convert_inline_inode(inode);
1183 if (ret)
1184 return ret;
97a7b2c2 1185
09cbfeaf
KS		 1186 pg_start = offset >> PAGE_SHIFT;
1187 pg_end = (offset + len) >> PAGE_SHIFT;
b4ace337 1188
21020812
CY		 1189 /* avoid gc operation during block exchange */
1190 down_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
1191
5a3a2d83 1192 down_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337
CY		 1193 /* write out all dirty pages from offset */
1194 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1195 if (ret)
21020812 1196 goto out_unlock;
bb06664a 1197
b4ace337
CY		 1198 truncate_pagecache(inode, offset);
1199
1200 ret = f2fs_do_collapse(inode, pg_start, pg_end);
1201 if (ret)
bb06664a 1202 goto out_unlock;
b4ace337 1203
6e2c64ad
JK		 1204 /* write out all moved pages, if possible */
1205 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1206 truncate_pagecache(inode, offset);
1207
b4ace337 1208 new_size = i_size_read(inode) - len;
6e2c64ad 1209 truncate_pagecache(inode, new_size);
b4ace337
CY		 1210
1211 ret = truncate_blocks(inode, new_size, true);
1212 if (!ret)
fc9581c8 1213 f2fs_i_size_write(inode, new_size);
bb06664a 1214out_unlock:
5a3a2d83 1215 up_write(&F2FS_I(inode)->i_mmap_sem);
21020812 1216 up_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
b4ace337
CY		 1217 return ret;
1218}
1219
6e961949
CY		 1220static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1221 pgoff_t end)
1222{
1223 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1224 pgoff_t index = start;
1225 unsigned int ofs_in_node = dn->ofs_in_node;
1226 blkcnt_t count = 0;
1227 int ret;
1228
1229 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1230 if (datablock_addr(dn->inode, dn->node_page,
1231 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1232 count++;
1233 }
1234
1235 dn->ofs_in_node = ofs_in_node;
1236 ret = reserve_new_blocks(dn, count);
1237 if (ret)
1238 return ret;
1239
1240 dn->ofs_in_node = ofs_in_node;
1241 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1242 dn->data_blkaddr = datablock_addr(dn->inode,
1243 dn->node_page, dn->ofs_in_node);
6e961949
CY		 1244 /*
1245 * reserve_new_blocks will not guarantee entire block
1246 * allocation.
1247 */
1248 if (dn->data_blkaddr == NULL_ADDR) {
1249 ret = -ENOSPC;
1250 break;
1251 }
1252 if (dn->data_blkaddr != NEW_ADDR) {
1253 invalidate_blocks(sbi, dn->data_blkaddr);
1254 dn->data_blkaddr = NEW_ADDR;
1255 set_data_blkaddr(dn);
1256 }
1257 }
1258
1259 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1260
1261 return ret;
1262}
1263
75cd4e09
CY		 1264static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1265 int mode)
1266{
1267 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1268 struct address_space *mapping = inode->i_mapping;
1269 pgoff_t index, pg_start, pg_end;
1270 loff_t new_size = i_size_read(inode);
1271 loff_t off_start, off_end;
1272 int ret = 0;
1273
75cd4e09
CY		 1274 ret = inode_newsize_ok(inode, (len + offset));
1275 if (ret)
1276 return ret;
1277
b9d777b8
JK		 1278 ret = f2fs_convert_inline_inode(inode);
1279 if (ret)
1280 return ret;
75cd4e09 1281
5a3a2d83 1282 down_write(&F2FS_I(inode)->i_mmap_sem);
75cd4e09
CY		 1283 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1284 if (ret)
5a3a2d83 1285 goto out_sem;
75cd4e09
CY		 1286
1287 truncate_pagecache_range(inode, offset, offset + len - 1);
1288
09cbfeaf
KS		 1289 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1290 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1291
09cbfeaf
KS		 1292 off_start = offset & (PAGE_SIZE - 1);
1293 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1294
1295 if (pg_start == pg_end) {
6394328a
CY		 1296 ret = fill_zero(inode, pg_start, off_start,
1297 off_end - off_start);
1298 if (ret)
5a3a2d83 1299 goto out_sem;
6394328a 1300
75cd4e09
CY		 1301 new_size = max_t(loff_t, new_size, offset + len);
1302 } else {
1303 if (off_start) {
6394328a 1304 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1305 PAGE_SIZE - off_start);
6394328a 1306 if (ret)
5a3a2d83 1307 goto out_sem;
6394328a 1308
75cd4e09 1309 new_size = max_t(loff_t, new_size,
09cbfeaf 1310 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1311 }
1312
6e961949 1313 for (index = pg_start; index < pg_end;) {
75cd4e09 1314 struct dnode_of_data dn;
6e961949
CY		 1315 unsigned int end_offset;
1316 pgoff_t end;
75cd4e09
CY		 1317
1318 f2fs_lock_op(sbi);
1319
6e961949
CY		 1320 set_new_dnode(&dn, inode, NULL, NULL, 0);
1321 ret = get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1322 if (ret) {
1323 f2fs_unlock_op(sbi);
1324 goto out;
1325 }
1326
6e961949
CY		 1327 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1328 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1329
1330 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09
CY		 1331 f2fs_put_dnode(&dn);
1332 f2fs_unlock_op(sbi);
9434fcde
CY		 1333
1334 f2fs_balance_fs(sbi, dn.node_changed);
1335
6e961949
CY		 1336 if (ret)
1337 goto out;
75cd4e09 1338
6e961949 1339 index = end;
75cd4e09 1340 new_size = max_t(loff_t, new_size,
6e961949 1341 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1342 }
1343
1344 if (off_end) {
6394328a
CY		 1345 ret = fill_zero(inode, pg_end, 0, off_end);
1346 if (ret)
1347 goto out;
1348
75cd4e09
CY		 1349 new_size = max_t(loff_t, new_size, offset + len);
1350 }
1351 }
1352
1353out:
17cd07ae
CY		 1354 if (new_size > i_size_read(inode)) {
1355 if (mode & FALLOC_FL_KEEP_SIZE)
1356 file_set_keep_isize(inode);
1357 else
1358 f2fs_i_size_write(inode, new_size);
1359 }
5a3a2d83
QS		 1360out_sem:
1361 up_write(&F2FS_I(inode)->i_mmap_sem);
75cd4e09
CY		 1362
1363 return ret;
1364}
1365
f62185d0
CY		 1366static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1367{
1368 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1369 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1370 loff_t new_size;
6e2c64ad 1371 int ret = 0;
f62185d0 1372
f62185d0 1373 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1374 ret = inode_newsize_ok(inode, new_size);
1375 if (ret)
1376 return ret;
f62185d0
CY		 1377
1378 if (offset >= i_size_read(inode))
1379 return -EINVAL;
1380
1381 /* insert range should be aligned to block size of f2fs. */
1382 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1383 return -EINVAL;
1384
b9d777b8
JK		 1385 ret = f2fs_convert_inline_inode(inode);
1386 if (ret)
1387 return ret;
97a7b2c2 1388
2c4db1a6 1389 f2fs_balance_fs(sbi, true);
2a340760 1390
21020812
CY		 1391 /* avoid gc operation during block exchange */
1392 down_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
1393
5a3a2d83 1394 down_write(&F2FS_I(inode)->i_mmap_sem);
f62185d0
CY		 1395 ret = truncate_blocks(inode, i_size_read(inode), true);
1396 if (ret)
5a3a2d83 1397 goto out;
f62185d0
CY		 1398
1399 /* write out all dirty pages from offset */
1400 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1401 if (ret)
5a3a2d83 1402 goto out;
f62185d0
CY		 1403
1404 truncate_pagecache(inode, offset);
1405
09cbfeaf
KS		 1406 pg_start = offset >> PAGE_SHIFT;
1407 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1408 delta = pg_end - pg_start;
0a2aa8fb
JK		 1409 idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1410
1411 while (!ret && idx > pg_start) {
1412 nr = idx - pg_start;
1413 if (nr > delta)
1414 nr = delta;
1415 idx -= nr;
f62185d0 1416
f62185d0 1417 f2fs_lock_op(sbi);
5f281fab
JK		 1418 f2fs_drop_extent_tree(inode);
1419
0a2aa8fb
JK		 1420 ret = __exchange_data_block(inode, inode, idx,
1421 idx + delta, nr, false);
f62185d0
CY		 1422 f2fs_unlock_op(sbi);
1423 }
1424
6e2c64ad
JK		 1425 /* write out all moved pages, if possible */
1426 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1427 truncate_pagecache(inode, offset);
1428
1429 if (!ret)
fc9581c8 1430 f2fs_i_size_write(inode, new_size);
5a3a2d83
QS		 1431out:
1432 up_write(&F2FS_I(inode)->i_mmap_sem);
21020812 1433 up_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
f62185d0
CY		 1434 return ret;
1435}
1436
fbfa2cc5
JK		 1437static int expand_inode_data(struct inode *inode, loff_t offset,
1438 loff_t len, int mode)
1439{
4081363f 1440 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1441 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
c4020b2d 1442 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE };
e12dd7bd 1443 pgoff_t pg_end;
fbfa2cc5 1444 loff_t new_size = i_size_read(inode);
e12dd7bd 1445 loff_t off_end;
a7de6086 1446 int err;
fbfa2cc5 1447
a7de6086
JK		 1448 err = inode_newsize_ok(inode, (len + offset));
1449 if (err)
1450 return err;
fbfa2cc5 1451
a7de6086
JK		 1452 err = f2fs_convert_inline_inode(inode);
1453 if (err)
1454 return err;
9e09fc85 1455
2c4db1a6 1456 f2fs_balance_fs(sbi, true);
2a340760 1457
e12dd7bd 1458 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1459 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1460
e12dd7bd
JK		 1461 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1462 map.m_len = pg_end - map.m_lblk;
1463 if (off_end)
1464 map.m_len++;
ead43275 1465
a7de6086
JK		 1466 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1467 if (err) {
e12dd7bd 1468 pgoff_t last_off;
fbfa2cc5 1469
e12dd7bd 1470 if (!map.m_len)
a7de6086 1471 return err;
98397ff3 1472
e12dd7bd
JK		 1473 last_off = map.m_lblk + map.m_len - 1;
1474
1475 /* update new size to the failed position */
1476 new_size = (last_off == pg_end) ? offset + len:
1477 (loff_t)(last_off + 1) << PAGE_SHIFT;
1478 } else {
1479 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1480 }
1481
e8ed90a6
CY		 1482 if (new_size > i_size_read(inode)) {
1483 if (mode & FALLOC_FL_KEEP_SIZE)
1484 file_set_keep_isize(inode);
1485 else
1486 f2fs_i_size_write(inode, new_size);
1487 }
fbfa2cc5 1488
a7de6086 1489 return err;
fbfa2cc5
JK		 1490}
1491
1492static long f2fs_fallocate(struct file *file, int mode,
1493 loff_t offset, loff_t len)
1494{
6131ffaa 1495 struct inode *inode = file_inode(file);
587c0a42 1496 long ret = 0;
fbfa2cc5 1497
1f227a3e
JK		 1498 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1499 return -EIO;
1500
c998012b
CY		 1501 /* f2fs only support ->fallocate for regular file */
1502 if (!S_ISREG(inode->i_mode))
1503 return -EINVAL;
1504
f62185d0
CY		 1505 if (f2fs_encrypted_inode(inode) &&
1506 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1507 return -EOPNOTSUPP;
1508
b4ace337 1509 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1510 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1511 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1512 return -EOPNOTSUPP;
1513
5955102c 1514 inode_lock(inode);
3375f696 1515
587c0a42
TY		 1516 if (mode & FALLOC_FL_PUNCH_HOLE) {
1517 if (offset >= inode->i_size)
1518 goto out;
1519
a66c7b2f 1520 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1521 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1522 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1523 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1524 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1525 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1526 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1527 } else {
fbfa2cc5 1528 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1529 }
fbfa2cc5 1530
3af60a49 1531 if (!ret) {
078cd827 1532 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1533 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1534 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1535 }
3375f696 1536
587c0a42 1537out:
5955102c 1538 inode_unlock(inode);
3375f696 1539
c01e2853 1540 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1541 return ret;
1542}
1543
1e84371f
JK		 1544static int f2fs_release_file(struct inode *inode, struct file *filp)
1545{
de5307e4
JK		 1546 /*
1547 * f2fs_relase_file is called at every close calls. So we should
1548 * not drop any inmemory pages by close called by other process.
1549 */
1550 if (!(filp->f_mode & FMODE_WRITE) ||
1551 atomic_read(&inode->i_writecount) != 1)
1552 return 0;
1553
1e84371f
JK		 1554 /* some remained atomic pages should discarded */
1555 if (f2fs_is_atomic_file(inode))
29b96b54 1556 drop_inmem_pages(inode);
1e84371f 1557 if (f2fs_is_volatile_file(inode)) {
91942321 1558 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 1559 stat_dec_volatile_write(inode);
91942321 1560 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1561 filemap_fdatawrite(inode->i_mapping);
91942321 1562 clear_inode_flag(inode, FI_DROP_CACHE);
1e84371f
JK		 1563 }
1564 return 0;
1565}
1566
7a10f017 1567static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1568{
7a10f017
JK		 1569 struct inode *inode = file_inode(file);
1570
1571 /*
1572 * If the process doing a transaction is crashed, we should do
1573 * roll-back. Otherwise, other reader/write can see corrupted database
1574 * until all the writers close its file. Since this should be done
1575 * before dropping file lock, it needs to do in ->flush.
1576 */
1577 if (f2fs_is_atomic_file(inode) &&
1578 F2FS_I(inode)->inmem_task == current)
1579 drop_inmem_pages(inode);
1580 return 0;
fbfa2cc5
JK		 1581}
1582
52656e6c 1583static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
fbfa2cc5 1584{
6131ffaa 1585 struct inode *inode = file_inode(filp);
fbfa2cc5 1586 struct f2fs_inode_info *fi = F2FS_I(inode);
76481158
CY		 1587 unsigned int flags = fi->i_flags;
1588
1589 if (file_is_encrypt(inode))
1590 flags |= F2FS_ENCRYPT_FL;
1591 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1592 flags |= F2FS_INLINE_DATA_FL;
1593
1594 flags &= F2FS_FL_USER_VISIBLE;
1595
52656e6c
JK		 1596 return put_user(flags, (int __user *)arg);
1597}
fbfa2cc5 1598
2c1d0305
CY		 1599static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags)
1600{
1601 struct f2fs_inode_info *fi = F2FS_I(inode);
1602 unsigned int oldflags;
1603
1604 /* Is it quota file? Do not allow user to mess with it */
1605 if (IS_NOQUOTA(inode))
1606 return -EPERM;
1607
1608 flags = f2fs_mask_flags(inode->i_mode, flags);
1609
1610 oldflags = fi->i_flags;
1611
59c84408 1612 if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL))
2c1d0305
CY		 1613 if (!capable(CAP_LINUX_IMMUTABLE))
1614 return -EPERM;
1615
c807a7cb
CY		 1616 flags = flags & F2FS_FL_USER_MODIFIABLE;
1617 flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE;
2c1d0305
CY		 1618 fi->i_flags = flags;
1619
59c84408 1620 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1621 set_inode_flag(inode, FI_PROJ_INHERIT);
1622 else
1623 clear_inode_flag(inode, FI_PROJ_INHERIT);
1624
1625 inode->i_ctime = current_time(inode);
1626 f2fs_set_inode_flags(inode);
1627 f2fs_mark_inode_dirty_sync(inode, false);
1628 return 0;
1629}
1630
52656e6c
JK		 1631static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1632{
1633 struct inode *inode = file_inode(filp);
69494229 1634 unsigned int flags;
52656e6c 1635 int ret;
fbfa2cc5 1636
7fb17fe4
CY		 1637 if (!inode_owner_or_capable(inode))
1638 return -EACCES;
1639
1640 if (get_user(flags, (int __user *)arg))
1641 return -EFAULT;
1642
52656e6c
JK		 1643 ret = mnt_want_write_file(filp);
1644 if (ret)
1645 return ret;
fbfa2cc5 1646
5955102c 1647 inode_lock(inode);
fbfa2cc5 1648
2c1d0305 1649 ret = __f2fs_ioc_setflags(inode, flags);
fbfa2cc5 1650
a72d4b97 1651 inode_unlock(inode);
52656e6c
JK		 1652 mnt_drop_write_file(filp);
1653 return ret;
1654}
4b2fecc8 1655
d49f3e89
CY		 1656static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1657{
1658 struct inode *inode = file_inode(filp);
1659
1660 return put_user(inode->i_generation, (int __user *)arg);
1661}
1662
88b88a66
JK		 1663static int f2fs_ioc_start_atomic_write(struct file *filp)
1664{
1665 struct inode *inode = file_inode(filp);
f4c9c743 1666 int ret;
88b88a66
JK		 1667
1668 if (!inode_owner_or_capable(inode))
1669 return -EACCES;
1670
e811898c
JK		 1671 if (!S_ISREG(inode->i_mode))
1672 return -EINVAL;
1673
7fb17fe4
CY		 1674 ret = mnt_want_write_file(filp);
1675 if (ret)
1676 return ret;
1677
0fac558b
CY		 1678 inode_lock(inode);
1679
27319ba4
CY		 1680 down_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
1681
1e84371f 1682 if (f2fs_is_atomic_file(inode))
7fb17fe4 1683 goto out;
88b88a66 1684
f4c9c743
CY		 1685 ret = f2fs_convert_inline_inode(inode);
1686 if (ret)
7fb17fe4 1687 goto out;
88b88a66 1688
91942321 1689 set_inode_flag(inode, FI_ATOMIC_FILE);
6c3acd97 1690 set_inode_flag(inode, FI_HOT_DATA);
d0239e1b
JK		 1691 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1692
c27753d6 1693 if (!get_dirty_pages(inode))
684ca7e5 1694 goto inc_stat;
c27753d6
JK		 1695
1696 f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
204706c7 1697 "Unexpected flush for atomic writes: ino=%lu, npages=%u",
c27753d6
JK		 1698 inode->i_ino, get_dirty_pages(inode));
1699 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
684ca7e5 1700 if (ret) {
91942321 1701 clear_inode_flag(inode, FI_ATOMIC_FILE);
84a23fbe 1702 clear_inode_flag(inode, FI_HOT_DATA);
684ca7e5
KM		 1703 goto out;
1704 }
1705
1706inc_stat:
7a10f017 1707 F2FS_I(inode)->inmem_task = current;
26a28a0c
JK		 1708 stat_inc_atomic_write(inode);
1709 stat_update_max_atomic_write(inode);
684ca7e5 1710out:
27319ba4 1711 up_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
0fac558b 1712 inode_unlock(inode);
7fb17fe4 1713 mnt_drop_write_file(filp);
c27753d6 1714 return ret;
88b88a66
JK		 1715}
1716
1717static int f2fs_ioc_commit_atomic_write(struct file *filp)
1718{
1719 struct inode *inode = file_inode(filp);
1720 int ret;
1721
1722 if (!inode_owner_or_capable(inode))
1723 return -EACCES;
1724
1725 ret = mnt_want_write_file(filp);
1726 if (ret)
1727 return ret;
1728
0fac558b
CY		 1729 inode_lock(inode);
1730
1dc0f899
CY		 1731 down_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
1732
7fb17fe4
CY		 1733 if (f2fs_is_volatile_file(inode))
1734 goto err_out;
1735
6282adbf 1736 if (f2fs_is_atomic_file(inode)) {
29b96b54 1737 ret = commit_inmem_pages(inode);
5fe45743 1738 if (ret)
edb27dee 1739 goto err_out;
5fe45743 1740
26a28a0c 1741 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
5fe45743
CY		 1742 if (!ret) {
1743 clear_inode_flag(inode, FI_ATOMIC_FILE);
84a23fbe 1744 clear_inode_flag(inode, FI_HOT_DATA);
5fe45743 1745 stat_dec_atomic_write(inode);
447135a8 1746 }
26a28a0c 1747 } else {
774e1b78 1748 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 1749 }
edb27dee 1750err_out:
1dc0f899 1751 up_write(&F2FS_I(inode)->dio_rwsem[WRITE]);
0fac558b 1752 inode_unlock(inode);
88b88a66
JK		 1753 mnt_drop_write_file(filp);
1754 return ret;
1755}
1756
02a1335f
JK		 1757static int f2fs_ioc_start_volatile_write(struct file *filp)
1758{
1759 struct inode *inode = file_inode(filp);
f4c9c743 1760 int ret;
02a1335f
JK		 1761
1762 if (!inode_owner_or_capable(inode))
1763 return -EACCES;
1764
8ff0971f
CY		 1765 if (!S_ISREG(inode->i_mode))
1766 return -EINVAL;
1767
7fb17fe4
CY		 1768 ret = mnt_want_write_file(filp);
1769 if (ret)
1770 return ret;
1771
0fac558b
CY		 1772 inode_lock(inode);
1773
1e84371f 1774 if (f2fs_is_volatile_file(inode))
7fb17fe4 1775 goto out;
1e84371f 1776
f4c9c743
CY		 1777 ret = f2fs_convert_inline_inode(inode);
1778 if (ret)
7fb17fe4 1779 goto out;
b3d208f9 1780
648d50ba
CY		 1781 stat_inc_volatile_write(inode);
1782 stat_update_max_volatile_write(inode);
1783
91942321 1784 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 1785 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1786out:
0fac558b 1787 inode_unlock(inode);
7fb17fe4
CY		 1788 mnt_drop_write_file(filp);
1789 return ret;
02a1335f
JK		 1790}
1791
1e84371f
JK		 1792static int f2fs_ioc_release_volatile_write(struct file *filp)
1793{
1794 struct inode *inode = file_inode(filp);
7fb17fe4 1795 int ret;
1e84371f
JK		 1796
1797 if (!inode_owner_or_capable(inode))
1798 return -EACCES;
1799
7fb17fe4
CY		 1800 ret = mnt_want_write_file(filp);
1801 if (ret)
1802 return ret;
1803
0fac558b
CY		 1804 inode_lock(inode);
1805
1e84371f 1806 if (!f2fs_is_volatile_file(inode))
7fb17fe4 1807 goto out;
1e84371f 1808
7fb17fe4
CY		 1809 if (!f2fs_is_first_block_written(inode)) {
1810 ret = truncate_partial_data_page(inode, 0, true);
1811 goto out;
1812 }
3c6c2beb 1813
7fb17fe4
CY		 1814 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1815out:
0fac558b 1816 inode_unlock(inode);
7fb17fe4
CY		 1817 mnt_drop_write_file(filp);
1818 return ret;
1e84371f
JK		 1819}
1820
1821static int f2fs_ioc_abort_volatile_write(struct file *filp)
1822{
1823 struct inode *inode = file_inode(filp);
1824 int ret;
1825
1826 if (!inode_owner_or_capable(inode))
1827 return -EACCES;
1828
1829 ret = mnt_want_write_file(filp);
1830 if (ret)
1831 return ret;
1832
0fac558b
CY		 1833 inode_lock(inode);
1834
26dc3d44 1835 if (f2fs_is_atomic_file(inode))
29b96b54 1836 drop_inmem_pages(inode);
732d5648 1837 if (f2fs_is_volatile_file(inode)) {
91942321 1838 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 1839 stat_dec_volatile_write(inode);
608514de 1840 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 1841 }
de6a8ec9 1842
0fac558b
CY		 1843 inode_unlock(inode);
1844
1e84371f 1845 mnt_drop_write_file(filp);
d0239e1b 1846 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 1847 return ret;
1848}
1849
1abff93d
JK		 1850static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1851{
1852 struct inode *inode = file_inode(filp);
1853 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1854 struct super_block *sb = sbi->sb;
1855 __u32 in;
7fb17fe4 1856 int ret;
1abff93d
JK		 1857
1858 if (!capable(CAP_SYS_ADMIN))
1859 return -EPERM;
1860
1861 if (get_user(in, (__u32 __user *)arg))
1862 return -EFAULT;
1863
7fb17fe4
CY		 1864 ret = mnt_want_write_file(filp);
1865 if (ret)
1866 return ret;
1867
1abff93d
JK		 1868 switch (in) {
1869 case F2FS_GOING_DOWN_FULLSYNC:
1870 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 1871 if (IS_ERR(sb)) {
1872 ret = PTR_ERR(sb);
1873 goto out;
1874 }
1875 if (sb) {
38f91ca8 1876 f2fs_stop_checkpoint(sbi, false);
1abff93d
JK		 1877 thaw_bdev(sb->s_bdev, sb);
1878 }
1879 break;
1880 case F2FS_GOING_DOWN_METASYNC:
1881 /* do checkpoint only */
d027c484
CY		 1882 ret = f2fs_sync_fs(sb, 1);
1883 if (ret)
1884 goto out;
38f91ca8 1885 f2fs_stop_checkpoint(sbi, false);
1abff93d
JK		 1886 break;
1887 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 1888 f2fs_stop_checkpoint(sbi, false);
1abff93d 1889 break;
c912a829 1890 case F2FS_GOING_DOWN_METAFLUSH:
b0af6d49 1891 sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 1892 f2fs_stop_checkpoint(sbi, false);
c912a829 1893 break;
1abff93d 1894 default:
7fb17fe4
CY		 1895 ret = -EINVAL;
1896 goto out;
1abff93d 1897 }
7950e9ac
CY		 1898
1899 stop_gc_thread(sbi);
1900 stop_discard_thread(sbi);
1901
1902 drop_discard_cmd(sbi);
1903 clear_opt(sbi, DISCARD);
1904
d0239e1b 1905 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4
CY		 1906out:
1907 mnt_drop_write_file(filp);
1908 return ret;
1abff93d
JK		 1909}
1910
52656e6c
JK		 1911static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1912{
1913 struct inode *inode = file_inode(filp);
1914 struct super_block *sb = inode->i_sb;
1915 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1916 struct fstrim_range range;
1917 int ret;
4b2fecc8 1918
52656e6c
JK		 1919 if (!capable(CAP_SYS_ADMIN))
1920 return -EPERM;
4b2fecc8 1921
52656e6c
JK		 1922 if (!blk_queue_discard(q))
1923 return -EOPNOTSUPP;
4b2fecc8 1924
52656e6c
JK		 1925 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
1926 sizeof(range)))
1927 return -EFAULT;
4b2fecc8 1928
7fb17fe4
CY		 1929 ret = mnt_want_write_file(filp);
1930 if (ret)
1931 return ret;
1932
52656e6c
JK		 1933 range.minlen = max((unsigned int)range.minlen,
1934 q->limits.discard_granularity);
1935 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 1936 mnt_drop_write_file(filp);
52656e6c
JK		 1937 if (ret < 0)
1938 return ret;
4b2fecc8 1939
52656e6c
JK		 1940 if (copy_to_user((struct fstrim_range __user *)arg, &range,
1941 sizeof(range)))
1942 return -EFAULT;
d0239e1b 1943 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 1944 return 0;
1945}
1946
f424f664
JK		 1947static bool uuid_is_nonzero(__u8 u[16])
1948{
1949 int i;
1950
1951 for (i = 0; i < 16; i++)
1952 if (u[i])
1953 return true;
1954 return false;
1955}
1956
1957static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
1958{
f424f664
JK		 1959 struct inode *inode = file_inode(filp);
1960
ccd31cb2 1961 if (!f2fs_sb_has_encrypt(inode->i_sb))
ead710b7
CY		 1962 return -EOPNOTSUPP;
1963
d0239e1b 1964 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1965
db717d8e 1966 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 1967}
1968
1969static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
1970{
ccd31cb2 1971 if (!f2fs_sb_has_encrypt(file_inode(filp)->i_sb))
ead710b7 1972 return -EOPNOTSUPP;
db717d8e 1973 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 1974}
1975
1976static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
1977{
1978 struct inode *inode = file_inode(filp);
1979 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1980 int err;
1981
ccd31cb2 1982 if (!f2fs_sb_has_encrypt(inode->i_sb))
f424f664
JK		 1983 return -EOPNOTSUPP;
1984
f424f664
JK		 1985 err = mnt_want_write_file(filp);
1986 if (err)
1987 return err;
1988
846ae671 1989 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 1990
1991 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
1992 goto got_it;
1993
f424f664
JK		 1994 /* update superblock with uuid */
1995 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
1996
c5bda1c8 1997 err = f2fs_commit_super(sbi, false);
f424f664
JK		 1998 if (err) {
1999 /* undo new data */
2000 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2001 goto out_err;
f424f664
JK		 2002 }
2003got_it:
2004 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2005 16))
d0d3f1b3
CY		 2006 err = -EFAULT;
2007out_err:
846ae671 2008 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2009 mnt_drop_write_file(filp);
2010 return err;
f424f664
JK		 2011}
2012
c1c1b583
CY		 2013static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2014{
2015 struct inode *inode = file_inode(filp);
2016 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2017 __u32 sync;
7fb17fe4 2018 int ret;
c1c1b583
CY		 2019
2020 if (!capable(CAP_SYS_ADMIN))
2021 return -EPERM;
2022
d530d4d8 2023 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2024 return -EFAULT;
2025
d530d4d8
CY		 2026 if (f2fs_readonly(sbi->sb))
2027 return -EROFS;
c1c1b583 2028
7fb17fe4
CY		 2029 ret = mnt_want_write_file(filp);
2030 if (ret)
2031 return ret;
2032
d530d4d8 2033 if (!sync) {
7fb17fe4
CY		 2034 if (!mutex_trylock(&sbi->gc_mutex)) {
2035 ret = -EBUSY;
2036 goto out;
2037 }
d530d4d8
CY		 2038 } else {
2039 mutex_lock(&sbi->gc_mutex);
c1c1b583
CY		 2040 }
2041
e066b83c 2042 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2043out:
2044 mnt_drop_write_file(filp);
2045 return ret;
c1c1b583
CY		 2046}
2047
34dc77ad
JK		 2048static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2049{
2050 struct inode *inode = file_inode(filp);
2051 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2052 struct f2fs_gc_range range;
2053 u64 end;
2054 int ret;
2055
2056 if (!capable(CAP_SYS_ADMIN))
2057 return -EPERM;
2058
2059 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2060 sizeof(range)))
2061 return -EFAULT;
2062
2063 if (f2fs_readonly(sbi->sb))
2064 return -EROFS;
2065
2066 ret = mnt_want_write_file(filp);
2067 if (ret)
2068 return ret;
2069
2070 end = range.start + range.len;
da5ce874
QS		 2071 if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) {
2072 ret = -EINVAL;
2073 goto out;
2074 }
34dc77ad
JK		 2075do_more:
2076 if (!range.sync) {
2077 if (!mutex_trylock(&sbi->gc_mutex)) {
2078 ret = -EBUSY;
2079 goto out;
2080 }
2081 } else {
2082 mutex_lock(&sbi->gc_mutex);
2083 }
2084
2085 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
2086 range.start += sbi->blocks_per_seg;
2087 if (range.start <= end)
2088 goto do_more;
2089out:
2090 mnt_drop_write_file(filp);
2091 return ret;
2092}
2093
456b88e4
CY		 2094static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2095{
2096 struct inode *inode = file_inode(filp);
2097 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2098 int ret;
456b88e4
CY		 2099
2100 if (!capable(CAP_SYS_ADMIN))
2101 return -EPERM;
2102
2103 if (f2fs_readonly(sbi->sb))
2104 return -EROFS;
2105
7fb17fe4
CY		 2106 ret = mnt_want_write_file(filp);
2107 if (ret)
2108 return ret;
2109
2110 ret = f2fs_sync_fs(sbi->sb, 1);
2111
2112 mnt_drop_write_file(filp);
2113 return ret;
456b88e4
CY		 2114}
2115
d323d005
CY		 2116static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2117 struct file *filp,
2118 struct f2fs_defragment *range)
2119{
2120 struct inode *inode = file_inode(filp);
f3d98e74
CY		 2121 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2122 .m_seg_type = NO_CHECK_TYPE };
e15882b6 2123 struct extent_info ei = {0,0,0};
f3d98e74 2124 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2125 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2126 unsigned int total = 0, sec_num;
d323d005
CY		 2127 block_t blk_end = 0;
2128 bool fragmented = false;
2129 int err;
2130
2131 /* if in-place-update policy is enabled, don't waste time here */
bb9e3bb8 2132 if (should_update_inplace(inode, NULL))
d323d005
CY		 2133 return -EINVAL;
2134
09cbfeaf
KS		 2135 pg_start = range->start >> PAGE_SHIFT;
2136 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2137
2c4db1a6 2138 f2fs_balance_fs(sbi, true);
d323d005 2139
5955102c 2140 inode_lock(inode);
d323d005
CY		 2141
2142 /* writeback all dirty pages in the range */
2143 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2144 range->start + range->len - 1);
d323d005
CY		 2145 if (err)
2146 goto out;
2147
2148 /*
2149 * lookup mapping info in extent cache, skip defragmenting if physical
2150 * block addresses are continuous.
2151 */
2152 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2153 if (ei.fofs + ei.len >= pg_end)
2154 goto out;
2155 }
2156
2157 map.m_lblk = pg_start;
f3d98e74 2158 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2159
2160 /*
2161 * lookup mapping info in dnode page cache, skip defragmenting if all
2162 * physical block addresses are continuous even if there are hole(s)
2163 * in logical blocks.
2164 */
2165 while (map.m_lblk < pg_end) {
a1c1e9b7 2166 map.m_len = pg_end - map.m_lblk;
f2220c7f 2167 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2168 if (err)
2169 goto out;
2170
2171 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2172 map.m_lblk = next_pgofs;
d323d005
CY		 2173 continue;
2174 }
2175
25a912e5 2176 if (blk_end && blk_end != map.m_pblk)
d323d005 2177 fragmented = true;
25a912e5
CY		 2178
2179 /* record total count of block that we're going to move */
2180 total += map.m_len;
2181
d323d005
CY		 2182 blk_end = map.m_pblk + map.m_len;
2183
2184 map.m_lblk += map.m_len;
d323d005
CY		 2185 }
2186
2187 if (!fragmented)
2188 goto out;
2189
25a912e5 2190 sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
d323d005
CY		 2191
2192 /*
2193 * make sure there are enough free section for LFS allocation, this can
2194 * avoid defragment running in SSR mode when free section are allocated
2195 * intensively
2196 */
7f3037a5 2197 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2198 err = -EAGAIN;
2199 goto out;
2200 }
2201
25a912e5
CY		 2202 map.m_lblk = pg_start;
2203 map.m_len = pg_end - pg_start;
2204 total = 0;
2205
d323d005
CY		 2206 while (map.m_lblk < pg_end) {
2207 pgoff_t idx;
2208 int cnt = 0;
2209
2210do_map:
a1c1e9b7 2211 map.m_len = pg_end - map.m_lblk;
f2220c7f 2212 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2213 if (err)
2214 goto clear_out;
2215
2216 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2217 map.m_lblk = next_pgofs;
d323d005
CY		 2218 continue;
2219 }
2220
91942321 2221 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2222
2223 idx = map.m_lblk;
2224 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2225 struct page *page;
2226
2227 page = get_lock_data_page(inode, idx, true);
2228 if (IS_ERR(page)) {
2229 err = PTR_ERR(page);
2230 goto clear_out;
2231 }
2232
2233 set_page_dirty(page);
2234 f2fs_put_page(page, 1);
2235
2236 idx++;
2237 cnt++;
2238 total++;
2239 }
2240
2241 map.m_lblk = idx;
d323d005
CY		 2242
2243 if (idx < pg_end && cnt < blk_per_seg)
2244 goto do_map;
2245
91942321 2246 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2247
2248 err = filemap_fdatawrite(inode->i_mapping);
2249 if (err)
2250 goto out;
2251 }
2252clear_out:
91942321 2253 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2254out:
5955102c 2255 inode_unlock(inode);
d323d005 2256 if (!err)
09cbfeaf 2257 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2258 return err;
2259}
2260
2261static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2262{
2263 struct inode *inode = file_inode(filp);
2264 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2265 struct f2fs_defragment range;
2266 int err;
2267
2268 if (!capable(CAP_SYS_ADMIN))
2269 return -EPERM;
2270
7eab0c0d 2271 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2272 return -EINVAL;
2273
d7563861
KM		 2274 if (f2fs_readonly(sbi->sb))
2275 return -EROFS;
d323d005
CY		 2276
2277 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2278 sizeof(range)))
2279 return -EFAULT;
d323d005
CY		 2280
2281 /* verify alignment of offset & size */
d7563861
KM		 2282 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2283 return -EINVAL;
d323d005 2284
1941d7bc 2285 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2286 sbi->max_file_blocks))
2287 return -EINVAL;
2288
2289 err = mnt_want_write_file(filp);
2290 if (err)
2291 return err;
1941d7bc 2292
d323d005 2293 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2294 mnt_drop_write_file(filp);
2295
d0239e1b 2296 f2fs_update_time(sbi, REQ_TIME);
d323d005 2297 if (err < 0)
d7563861 2298 return err;
d323d005
CY		 2299
2300 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2301 sizeof(range)))
d7563861
KM		 2302 return -EFAULT;
2303
2304 return 0;
d323d005
CY		 2305}
2306
4dd6f977
JK		 2307static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2308 struct file *file_out, loff_t pos_out, size_t len)
2309{
2310 struct inode *src = file_inode(file_in);
2311 struct inode *dst = file_inode(file_out);
2312 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2313 size_t olen = len, dst_max_i_size = 0;
2314 size_t dst_osize;
2315 int ret;
2316
2317 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2318 src->i_sb != dst->i_sb)
2319 return -EXDEV;
2320
2321 if (unlikely(f2fs_readonly(src->i_sb)))
2322 return -EROFS;
2323
fe8494bf
CY		 2324 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2325 return -EINVAL;
4dd6f977
JK		 2326
2327 if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
2328 return -EOPNOTSUPP;
2329
d95fd91c
FL		 2330 if (src == dst) {
2331 if (pos_in == pos_out)
2332 return 0;
2333 if (pos_out > pos_in && pos_out < pos_in + len)
2334 return -EINVAL;
2335 }
2336
4dd6f977 2337 inode_lock(src);
bb06664a 2338 down_write(&F2FS_I(src)->dio_rwsem[WRITE]);
20a3d61d 2339 if (src != dst) {
bb06664a
CY		 2340 ret = -EBUSY;
2341 if (!inode_trylock(dst))
2342 goto out;
2343 if (!down_write_trylock(&F2FS_I(dst)->dio_rwsem[WRITE])) {
2344 inode_unlock(dst);
20a3d61d
CY		 2345 goto out;
2346 }
2347 }
4dd6f977
JK		 2348
2349 ret = -EINVAL;
2350 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2351 goto out_unlock;
2352 if (len == 0)
2353 olen = len = src->i_size - pos_in;
2354 if (pos_in + len == src->i_size)
2355 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2356 if (len == 0) {
2357 ret = 0;
2358 goto out_unlock;
2359 }
2360
2361 dst_osize = dst->i_size;
2362 if (pos_out + olen > dst->i_size)
2363 dst_max_i_size = pos_out + olen;
2364
2365 /* verify the end result is block aligned */
2366 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2367 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2368 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2369 goto out_unlock;
2370
2371 ret = f2fs_convert_inline_inode(src);
2372 if (ret)
2373 goto out_unlock;
2374
2375 ret = f2fs_convert_inline_inode(dst);
2376 if (ret)
2377 goto out_unlock;
2378
2379 /* write out all dirty pages from offset */
2380 ret = filemap_write_and_wait_range(src->i_mapping,
2381 pos_in, pos_in + len);
2382 if (ret)
2383 goto out_unlock;
2384
2385 ret = filemap_write_and_wait_range(dst->i_mapping,
2386 pos_out, pos_out + len);
2387 if (ret)
2388 goto out_unlock;
2389
2390 f2fs_balance_fs(sbi, true);
2391 f2fs_lock_op(sbi);
61e4da11
FL		 2392 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2393 pos_out >> F2FS_BLKSIZE_BITS,
2394 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2395
2396 if (!ret) {
2397 if (dst_max_i_size)
2398 f2fs_i_size_write(dst, dst_max_i_size);
2399 else if (dst_osize != dst->i_size)
2400 f2fs_i_size_write(dst, dst_osize);
2401 }
2402 f2fs_unlock_op(sbi);
2403out_unlock:
bb06664a
CY		 2404 if (src != dst) {
2405 up_write(&F2FS_I(dst)->dio_rwsem[WRITE]);
4dd6f977 2406 inode_unlock(dst);
bb06664a 2407 }
20a3d61d 2408out:
bb06664a 2409 up_write(&F2FS_I(src)->dio_rwsem[WRITE]);
4dd6f977
JK		 2410 inode_unlock(src);
2411 return ret;
2412}
2413
2414static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2415{
2416 struct f2fs_move_range range;
2417 struct fd dst;
2418 int err;
2419
2420 if (!(filp->f_mode & FMODE_READ) ||
2421 !(filp->f_mode & FMODE_WRITE))
2422 return -EBADF;
2423
2424 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2425 sizeof(range)))
2426 return -EFAULT;
2427
2428 dst = fdget(range.dst_fd);
2429 if (!dst.file)
2430 return -EBADF;
2431
2432 if (!(dst.file->f_mode & FMODE_WRITE)) {
2433 err = -EBADF;
2434 goto err_out;
2435 }
2436
2437 err = mnt_want_write_file(filp);
2438 if (err)
2439 goto err_out;
2440
2441 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2442 range.pos_out, range.len);
2443
2444 mnt_drop_write_file(filp);
3cecfa5f
KM		 2445 if (err)
2446 goto err_out;
4dd6f977
JK		 2447
2448 if (copy_to_user((struct f2fs_move_range __user *)arg,
2449 &range, sizeof(range)))
2450 err = -EFAULT;
2451err_out:
2452 fdput(dst);
2453 return err;
2454}
2455
e066b83c
JK		 2456static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2457{
2458 struct inode *inode = file_inode(filp);
2459 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2460 struct sit_info *sm = SIT_I(sbi);
2461 unsigned int start_segno = 0, end_segno = 0;
2462 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2463 struct f2fs_flush_device range;
2464 int ret;
2465
2466 if (!capable(CAP_SYS_ADMIN))
2467 return -EPERM;
2468
2469 if (f2fs_readonly(sbi->sb))
2470 return -EROFS;
2471
2472 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2473 sizeof(range)))
2474 return -EFAULT;
2475
2476 if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num ||
2477 sbi->segs_per_sec != 1) {
2478 f2fs_msg(sbi->sb, KERN_WARNING,
2479 "Can't flush %u in %d for segs_per_sec %u != 1\n",
2480 range.dev_num, sbi->s_ndevs,
2481 sbi->segs_per_sec);
2482 return -EINVAL;
2483 }
2484
2485 ret = mnt_want_write_file(filp);
2486 if (ret)
2487 return ret;
2488
2489 if (range.dev_num != 0)
2490 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2491 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2492
2493 start_segno = sm->last_victim[FLUSH_DEVICE];
2494 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2495 start_segno = dev_start_segno;
2496 end_segno = min(start_segno + range.segments, dev_end_segno);
2497
2498 while (start_segno < end_segno) {
2499 if (!mutex_trylock(&sbi->gc_mutex)) {
2500 ret = -EBUSY;
2501 goto out;
2502 }
2503 sm->last_victim[GC_CB] = end_segno + 1;
2504 sm->last_victim[GC_GREEDY] = end_segno + 1;
2505 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2506 ret = f2fs_gc(sbi, true, true, start_segno);
2507 if (ret == -EAGAIN)
2508 ret = 0;
2509 else if (ret < 0)
2510 break;
2511 start_segno++;
2512 }
2513out:
2514 mnt_drop_write_file(filp);
2515 return ret;
2516}
2517
e65ef207
JK		 2518static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2519{
2520 struct inode *inode = file_inode(filp);
2521 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2522
2523 /* Must validate to set it with SQLite behavior in Android. */
2524 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2525
2526 return put_user(sb_feature, (u32 __user *)arg);
2527}
e066b83c 2528
2c1d0305
CY		 2529#ifdef CONFIG_QUOTA
2530static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2531{
2532 struct inode *inode = file_inode(filp);
2533 struct f2fs_inode_info *fi = F2FS_I(inode);
2534 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2535 struct super_block *sb = sbi->sb;
2536 struct dquot *transfer_to[MAXQUOTAS] = {};
2537 struct page *ipage;
2538 kprojid_t kprojid;
2539 int err;
2540
2541 if (!f2fs_sb_has_project_quota(sb)) {
2542 if (projid != F2FS_DEF_PROJID)
2543 return -EOPNOTSUPP;
2544 else
2545 return 0;
2546 }
2547
2548 if (!f2fs_has_extra_attr(inode))
2549 return -EOPNOTSUPP;
2550
2551 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2552
2553 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2554 return 0;
2555
2556 err = mnt_want_write_file(filp);
2557 if (err)
2558 return err;
2559
2560 err = -EPERM;
2561 inode_lock(inode);
2562
2563 /* Is it quota file? Do not allow user to mess with it */
2564 if (IS_NOQUOTA(inode))
2565 goto out_unlock;
2566
2567 ipage = get_node_page(sbi, inode->i_ino);
2568 if (IS_ERR(ipage)) {
2569 err = PTR_ERR(ipage);
2570 goto out_unlock;
2571 }
2572
2573 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2574 i_projid)) {
2575 err = -EOVERFLOW;
2576 f2fs_put_page(ipage, 1);
2577 goto out_unlock;
2578 }
2579 f2fs_put_page(ipage, 1);
2580
2581 dquot_initialize(inode);
2582
2583 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2584 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2585 err = __dquot_transfer(inode, transfer_to);
2586 dqput(transfer_to[PRJQUOTA]);
2587 if (err)
2588 goto out_dirty;
2589 }
2590
2591 F2FS_I(inode)->i_projid = kprojid;
2592 inode->i_ctime = current_time(inode);
2593out_dirty:
2594 f2fs_mark_inode_dirty_sync(inode, true);
2595out_unlock:
2596 inode_unlock(inode);
2597 mnt_drop_write_file(filp);
2598 return err;
2599}
2600#else
2601static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2602{
2603 if (projid != F2FS_DEF_PROJID)
2604 return -EOPNOTSUPP;
2605 return 0;
2606}
2607#endif
2608
2609/* Transfer internal flags to xflags */
2610static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags)
2611{
2612 __u32 xflags = 0;
2613
59c84408 2614 if (iflags & F2FS_SYNC_FL)
2c1d0305 2615 xflags |= FS_XFLAG_SYNC;
59c84408 2616 if (iflags & F2FS_IMMUTABLE_FL)
2c1d0305 2617 xflags |= FS_XFLAG_IMMUTABLE;
59c84408 2618 if (iflags & F2FS_APPEND_FL)
2c1d0305 2619 xflags |= FS_XFLAG_APPEND;
59c84408 2620 if (iflags & F2FS_NODUMP_FL)
2c1d0305 2621 xflags |= FS_XFLAG_NODUMP;
59c84408 2622 if (iflags & F2FS_NOATIME_FL)
2c1d0305 2623 xflags |= FS_XFLAG_NOATIME;
59c84408 2624 if (iflags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 2625 xflags |= FS_XFLAG_PROJINHERIT;
2626 return xflags;
2627}
2628
2629#define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \
2630 FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \
2631 FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT)
2632
2c1d0305
CY		 2633/* Transfer xflags flags to internal */
2634static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags)
2635{
2636 unsigned long iflags = 0;
2637
2638 if (xflags & FS_XFLAG_SYNC)
59c84408 2639 iflags |= F2FS_SYNC_FL;
2c1d0305 2640 if (xflags & FS_XFLAG_IMMUTABLE)
59c84408 2641 iflags |= F2FS_IMMUTABLE_FL;
2c1d0305 2642 if (xflags & FS_XFLAG_APPEND)
59c84408 2643 iflags |= F2FS_APPEND_FL;
2c1d0305 2644 if (xflags & FS_XFLAG_NODUMP)
59c84408 2645 iflags |= F2FS_NODUMP_FL;
2c1d0305 2646 if (xflags & FS_XFLAG_NOATIME)
59c84408 2647 iflags |= F2FS_NOATIME_FL;
2c1d0305 2648 if (xflags & FS_XFLAG_PROJINHERIT)
59c84408 2649 iflags |= F2FS_PROJINHERIT_FL;
2c1d0305
CY		 2650
2651 return iflags;
2652}
2653
2654static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
2655{
2656 struct inode *inode = file_inode(filp);
2657 struct f2fs_inode_info *fi = F2FS_I(inode);
2658 struct fsxattr fa;
2659
2660 memset(&fa, 0, sizeof(struct fsxattr));
2661 fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags &
c807a7cb 2662 F2FS_FL_USER_VISIBLE);
2c1d0305
CY		 2663
2664 if (f2fs_sb_has_project_quota(inode->i_sb))
2665 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
2666 fi->i_projid);
2667
2668 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2669 return -EFAULT;
2670 return 0;
2671}
2672
2673static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
2674{
2675 struct inode *inode = file_inode(filp);
2676 struct f2fs_inode_info *fi = F2FS_I(inode);
2677 struct fsxattr fa;
2678 unsigned int flags;
2679 int err;
2680
2681 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
2682 return -EFAULT;
2683
2684 /* Make sure caller has proper permission */
2685 if (!inode_owner_or_capable(inode))
2686 return -EACCES;
2687
2688 if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS)
2689 return -EOPNOTSUPP;
2690
2691 flags = f2fs_xflags_to_iflags(fa.fsx_xflags);
2692 if (f2fs_mask_flags(inode->i_mode, flags) != flags)
2693 return -EOPNOTSUPP;
2694
2695 err = mnt_want_write_file(filp);
2696 if (err)
2697 return err;
2698
2699 inode_lock(inode);
2700 flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) |
2701 (flags & F2FS_FL_XFLAG_VISIBLE);
2702 err = __f2fs_ioc_setflags(inode, flags);
2703 inode_unlock(inode);
2704 mnt_drop_write_file(filp);
2705 if (err)
2706 return err;
2707
2708 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
2709 if (err)
2710 return err;
2711
2712 return 0;
2713}
e066b83c 2714
1ad71a27
JK		 2715int f2fs_pin_file_control(struct inode *inode, bool inc)
2716{
2717 struct f2fs_inode_info *fi = F2FS_I(inode);
2718 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2719
2720 /* Use i_gc_failures for normal file as a risk signal. */
2721 if (inc)
2722 f2fs_i_gc_failures_write(inode, fi->i_gc_failures + 1);
2723
2724 if (fi->i_gc_failures > sbi->gc_pin_file_threshold) {
2725 f2fs_msg(sbi->sb, KERN_WARNING,
2726 "%s: Enable GC = ino %lx after %x GC trials\n",
2727 __func__, inode->i_ino, fi->i_gc_failures);
2728 clear_inode_flag(inode, FI_PIN_FILE);
2729 return -EAGAIN;
2730 }
2731 return 0;
2732}
2733
2734static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
2735{
2736 struct inode *inode = file_inode(filp);
2737 __u32 pin;
2738 int ret = 0;
2739
2740 if (!inode_owner_or_capable(inode))
2741 return -EACCES;
2742
2743 if (get_user(pin, (__u32 __user *)arg))
2744 return -EFAULT;
2745
2746 if (!S_ISREG(inode->i_mode))
2747 return -EINVAL;
2748
2749 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
2750 return -EROFS;
2751
2752 ret = mnt_want_write_file(filp);
2753 if (ret)
2754 return ret;
2755
2756 inode_lock(inode);
2757
bb9e3bb8
CY		 2758 if (should_update_outplace(inode, NULL)) {
2759 ret = -EINVAL;
2760 goto out;
2761 }
2762
1ad71a27
JK		 2763 if (!pin) {
2764 clear_inode_flag(inode, FI_PIN_FILE);
2765 F2FS_I(inode)->i_gc_failures = 1;
2766 goto done;
2767 }
2768
2769 if (f2fs_pin_file_control(inode, false)) {
2770 ret = -EAGAIN;
2771 goto out;
2772 }
2773 ret = f2fs_convert_inline_inode(inode);
2774 if (ret)
2775 goto out;
2776
2777 set_inode_flag(inode, FI_PIN_FILE);
2778 ret = F2FS_I(inode)->i_gc_failures;
2779done:
2780 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2781out:
2782 inode_unlock(inode);
2783 mnt_drop_write_file(filp);
2784 return ret;
2785}
2786
2787static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
2788{
2789 struct inode *inode = file_inode(filp);
2790 __u32 pin = 0;
2791
2792 if (is_inode_flag_set(inode, FI_PIN_FILE))
2793 pin = F2FS_I(inode)->i_gc_failures;
2794 return put_user(pin, (u32 __user *)arg);
2795}
2796
c4020b2d
CY		 2797int f2fs_precache_extents(struct inode *inode)
2798{
2799 struct f2fs_inode_info *fi = F2FS_I(inode);
2800 struct f2fs_map_blocks map;
2801 pgoff_t m_next_extent;
2802 loff_t end;
2803 int err;
2804
2805 if (is_inode_flag_set(inode, FI_NO_EXTENT))
2806 return -EOPNOTSUPP;
2807
2808 map.m_lblk = 0;
2809 map.m_next_pgofs = NULL;
2810 map.m_next_extent = &m_next_extent;
2811 map.m_seg_type = NO_CHECK_TYPE;
2812 end = F2FS_I_SB(inode)->max_file_blocks;
2813
2814 while (map.m_lblk < end) {
2815 map.m_len = end - map.m_lblk;
2816
2817 down_write(&fi->dio_rwsem[WRITE]);
2818 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
2819 up_write(&fi->dio_rwsem[WRITE]);
2820 if (err)
2821 return err;
2822
2823 map.m_lblk = m_next_extent;
2824 }
2825
2826 return err;
2827}
2828
2829static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
2830{
2831 return f2fs_precache_extents(file_inode(filp));
2832}
2833
52656e6c
JK		 2834long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2835{
1f227a3e
JK		 2836 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
2837 return -EIO;
2838
52656e6c
JK		 2839 switch (cmd) {
2840 case F2FS_IOC_GETFLAGS:
2841 return f2fs_ioc_getflags(filp, arg);
2842 case F2FS_IOC_SETFLAGS:
2843 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 2844 case F2FS_IOC_GETVERSION:
2845 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 2846 case F2FS_IOC_START_ATOMIC_WRITE:
2847 return f2fs_ioc_start_atomic_write(filp);
2848 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2849 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 2850 case F2FS_IOC_START_VOLATILE_WRITE:
2851 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 2852 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2853 return f2fs_ioc_release_volatile_write(filp);
2854 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2855 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 2856 case F2FS_IOC_SHUTDOWN:
2857 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 2858 case FITRIM:
2859 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 2860 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2861 return f2fs_ioc_set_encryption_policy(filp, arg);
2862 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2863 return f2fs_ioc_get_encryption_policy(filp, arg);
2864 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2865 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
c1c1b583
CY		 2866 case F2FS_IOC_GARBAGE_COLLECT:
2867 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 2868 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
2869 return f2fs_ioc_gc_range(filp, arg);
456b88e4
CY		 2870 case F2FS_IOC_WRITE_CHECKPOINT:
2871 return f2fs_ioc_write_checkpoint(filp, arg);
d323d005
CY		 2872 case F2FS_IOC_DEFRAGMENT:
2873 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 2874 case F2FS_IOC_MOVE_RANGE:
2875 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 2876 case F2FS_IOC_FLUSH_DEVICE:
2877 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 2878 case F2FS_IOC_GET_FEATURES:
2879 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 2880 case F2FS_IOC_FSGETXATTR:
2881 return f2fs_ioc_fsgetxattr(filp, arg);
2882 case F2FS_IOC_FSSETXATTR:
2883 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 2884 case F2FS_IOC_GET_PIN_FILE:
2885 return f2fs_ioc_get_pin_file(filp, arg);
2886 case F2FS_IOC_SET_PIN_FILE:
2887 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 2888 case F2FS_IOC_PRECACHE_EXTENTS:
2889 return f2fs_ioc_precache_extents(filp, arg);
fbfa2cc5
JK		 2890 default:
2891 return -ENOTTY;
2892 }
2893}
2894
fcc85a4d
JK		 2895static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
2896{
b439b103
JK		 2897 struct file *file = iocb->ki_filp;
2898 struct inode *inode = file_inode(file);
2899 ssize_t ret;
fcc85a4d 2900
1f227a3e
JK		 2901 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
2902 return -EIO;
2903
b91050a8
HL		 2904 if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT))
2905 return -EINVAL;
2906
2907 if (!inode_trylock(inode)) {
2908 if (iocb->ki_flags & IOCB_NOWAIT)
2909 return -EAGAIN;
2910 inode_lock(inode);
2911 }
2912
b439b103
JK		 2913 ret = generic_write_checks(iocb, from);
2914 if (ret > 0) {
dc7a10dd
JK		 2915 bool preallocated = false;
2916 size_t target_size = 0;
dc91de78 2917 int err;
a7de6086 2918
dc91de78
JK		 2919 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
2920 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 2921
b91050a8
HL		 2922 if ((iocb->ki_flags & IOCB_NOWAIT) &&
2923 (iocb->ki_flags & IOCB_DIRECT)) {
2924 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
2925 iov_iter_count(from)) ||
2926 f2fs_has_inline_data(inode) ||
2927 f2fs_force_buffered_io(inode, WRITE)) {
2928 inode_unlock(inode);
2929 return -EAGAIN;
2930 }
2931
2932 } else {
dc7a10dd
JK		 2933 preallocated = true;
2934 target_size = iocb->ki_pos + iov_iter_count(from);
2935
b91050a8
HL		 2936 err = f2fs_preallocate_blocks(iocb, from);
2937 if (err) {
2938 clear_inode_flag(inode, FI_NO_PREALLOC);
2939 inode_unlock(inode);
2940 return err;
2941 }
9dfa1baf 2942 }
a7de6086 2943 ret = __generic_file_write_iter(iocb, from);
dc91de78 2944 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 2945
dc7a10dd
JK		 2946 /* if we couldn't write data, we should deallocate blocks. */
2947 if (preallocated && i_size_read(inode) < target_size)
2948 f2fs_truncate(inode);
2949
b0af6d49
CY		 2950 if (ret > 0)
2951 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 2952 }
2953 inode_unlock(inode);
2954
e2592217
CH		 2955 if (ret > 0)
2956 ret = generic_write_sync(iocb, ret);
b439b103 2957 return ret;
fcc85a4d
JK		 2958}
2959
e9750824
NJ		 2960#ifdef CONFIG_COMPAT
2961long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2962{
2963 switch (cmd) {
2964 case F2FS_IOC32_GETFLAGS:
2965 cmd = F2FS_IOC_GETFLAGS;
2966 break;
2967 case F2FS_IOC32_SETFLAGS:
2968 cmd = F2FS_IOC_SETFLAGS;
2969 break;
04ef4b62
CY		 2970 case F2FS_IOC32_GETVERSION:
2971 cmd = F2FS_IOC_GETVERSION;
2972 break;
2973 case F2FS_IOC_START_ATOMIC_WRITE:
2974 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2975 case F2FS_IOC_START_VOLATILE_WRITE:
2976 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2977 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2978 case F2FS_IOC_SHUTDOWN:
2979 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2980 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2981 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2982 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 2983 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 2984 case F2FS_IOC_WRITE_CHECKPOINT:
2985 case F2FS_IOC_DEFRAGMENT:
4dd6f977 2986 case F2FS_IOC_MOVE_RANGE:
e066b83c 2987 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 2988 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 2989 case F2FS_IOC_FSGETXATTR:
2990 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 2991 case F2FS_IOC_GET_PIN_FILE:
2992 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 2993 case F2FS_IOC_PRECACHE_EXTENTS:
4dd6f977 2994 break;
e9750824
NJ		 2995 default:
2996 return -ENOIOCTLCMD;
2997 }
2998 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
2999}
3000#endif
3001
fbfa2cc5 3002const struct file_operations f2fs_file_operations = {
267378d4 3003 .llseek = f2fs_llseek,
aad4f8bb 3004 .read_iter = generic_file_read_iter,
fcc85a4d
JK		 3005 .write_iter = f2fs_file_write_iter,
3006 .open = f2fs_file_open,
12662234 3007 .release = f2fs_release_file,
fbfa2cc5 3008 .mmap = f2fs_file_mmap,
7a10f017 3009 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3010 .fsync = f2fs_sync_file,
3011 .fallocate = f2fs_fallocate,
3012 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3013#ifdef CONFIG_COMPAT
3014 .compat_ioctl = f2fs_compat_ioctl,
3015#endif
fbfa2cc5 3016 .splice_read = generic_file_splice_read,
8d020765 3017 .splice_write = iter_file_splice_write,
fbfa2cc5 3018};
Linux 6.x block layer and io_uring tree(s)