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Merge branches 'ib-mfd-4.19', 'ib-mfd-gpio-pinctrl-4.19', 'ib-mfd-i915-media-platform...
[mirror_ubuntu-eoan-kernel.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)) {
193bea1d 98 loff_t offset;
f11e98bd 99
09cbfeaf
KS		 100 offset = i_size_read(inode) & ~PAGE_MASK;
101 zero_user_segment(page, offset, PAGE_SIZE);
fbfa2cc5
JK		 102 }
103 set_page_dirty(page);
237c0790
JK		 104 if (!PageUptodate(page))
105 SetPageUptodate(page);
fbfa2cc5 106
b0af6d49
CY		 107 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
108
e943a10d 109 trace_f2fs_vm_page_mkwrite(page, DATA);
9851e6e1
NJ		 110mapped:
111 /* fill the page */
fec1d657 112 f2fs_wait_on_page_writeback(page, DATA, false);
08b39fbd 113
6dbb1796
EB		 114 /* wait for GCed page writeback via META_MAPPING */
115 if (f2fs_post_read_required(inode))
d4c759ee 116 f2fs_wait_on_block_writeback(sbi, dn.data_blkaddr);
08b39fbd 117
5a3a2d83
QS		 118out_sem:
119 up_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 120out:
121 sb_end_pagefault(inode->i_sb);
d0239e1b 122 f2fs_update_time(sbi, REQ_TIME);
1f227a3e 123err:
fbfa2cc5
JK		 124 return block_page_mkwrite_return(err);
125}
126
127static const struct vm_operations_struct f2fs_file_vm_ops = {
5a3a2d83 128 .fault = f2fs_filemap_fault,
f1820361 129 .map_pages = filemap_map_pages,
692bb55d 130 .page_mkwrite = f2fs_vm_page_mkwrite,
fbfa2cc5
JK		 131};
132
354a3399
JK		 133static int get_parent_ino(struct inode *inode, nid_t *pino)
134{
135 struct dentry *dentry;
136
137 inode = igrab(inode);
138 dentry = d_find_any_alias(inode);
139 iput(inode);
140 if (!dentry)
141 return 0;
142
f0947e5c
JK		 143 *pino = parent_ino(dentry);
144 dput(dentry);
354a3399
JK		 145 return 1;
146}
147
a5fd5050 148static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
9d1589ef 149{
4081363f 150 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
a5fd5050 151 enum cp_reason_type cp_reason = CP_NO_NEEDED;
9d1589ef 152
a5fd5050
CY		 153 if (!S_ISREG(inode->i_mode))
154 cp_reason = CP_NON_REGULAR;
155 else if (inode->i_nlink != 1)
156 cp_reason = CP_HARDLINK;
bbf156f7 157 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
a5fd5050 158 cp_reason = CP_SB_NEED_CP;
9d1589ef 159 else if (file_wrong_pino(inode))
a5fd5050 160 cp_reason = CP_WRONG_PINO;
4d57b86d 161 else if (!f2fs_space_for_roll_forward(sbi))
a5fd5050 162 cp_reason = CP_NO_SPC_ROLL;
4d57b86d 163 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
a5fd5050 164 cp_reason = CP_NODE_NEED_CP;
d5053a34 165 else if (test_opt(sbi, FASTBOOT))
a5fd5050 166 cp_reason = CP_FASTBOOT_MODE;
63189b78 167 else if (F2FS_OPTION(sbi).active_logs == 2)
a5fd5050 168 cp_reason = CP_SPEC_LOG_NUM;
63189b78 169 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
4d57b86d
CY		 170 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
171 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
172 TRANS_DIR_INO))
0a007b97 173 cp_reason = CP_RECOVER_DIR;
9d1589ef 174
a5fd5050 175 return cp_reason;
9d1589ef
CY		 176}
177
9c7bb702
CL		 178static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
179{
180 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
181 bool ret = false;
182 /* But we need to avoid that there are some inode updates */
4d57b86d 183 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
9c7bb702
CL		 184 ret = true;
185 f2fs_put_page(i, 0);
186 return ret;
187}
188
51455b19
CL		 189static void try_to_fix_pino(struct inode *inode)
190{
191 struct f2fs_inode_info *fi = F2FS_I(inode);
192 nid_t pino;
193
194 down_write(&fi->i_sem);
51455b19
CL		 195 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
196 get_parent_ino(inode, &pino)) {
205b9822 197 f2fs_i_pino_write(inode, pino);
51455b19 198 file_got_pino(inode);
51455b19 199 }
ee6d182f 200 up_write(&fi->i_sem);
51455b19
CL		 201}
202
608514de
JK		 203static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
204 int datasync, bool atomic)
fbfa2cc5
JK		 205{
206 struct inode *inode = file->f_mapping->host;
4081363f 207 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2403c155 208 nid_t ino = inode->i_ino;
fbfa2cc5 209 int ret = 0;
a5fd5050 210 enum cp_reason_type cp_reason = 0;
fbfa2cc5 211 struct writeback_control wbc = {
c81bf1c8 212 .sync_mode = WB_SYNC_ALL,
fbfa2cc5
JK		 213 .nr_to_write = LONG_MAX,
214 .for_reclaim = 0,
215 };
216
6bacf52f 217 if (unlikely(f2fs_readonly(inode->i_sb)))
1fa95b0b
NJ		 218 return 0;
219
a2a4a7e4 220 trace_f2fs_sync_file_enter(inode);
ea1aa12c
JK		 221
222 /* if fdatasync is triggered, let's do in-place-update */
c46a155b 223 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
91942321 224 set_inode_flag(inode, FI_NEED_IPU);
3b49c9a1 225 ret = file_write_and_wait_range(file, start, end);
91942321 226 clear_inode_flag(inode, FI_NEED_IPU);
c1ce1b02 227
a2a4a7e4 228 if (ret) {
a5fd5050 229 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
fbfa2cc5 230 return ret;
a2a4a7e4 231 }
fbfa2cc5 232
9c7bb702 233 /* if the inode is dirty, let's recover all the time */
281518c6 234 if (!f2fs_skip_inode_update(inode, datasync)) {
2286c020 235 f2fs_write_inode(inode, NULL);
9c7bb702
CL		 236 goto go_write;
237 }
238
6d99ba41
JK		 239 /*
240 * if there is no written data, don't waste time to write recovery info.
241 */
91942321 242 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
4d57b86d 243 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
19c9c466 244
9c7bb702
CL		 245 /* it may call write_inode just prior to fsync */
246 if (need_inode_page_update(sbi, ino))
19c9c466 247 goto go_write;
19c9c466 248
91942321 249 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
4d57b86d 250 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
6d99ba41
JK		 251 goto flush_out;
252 goto out;
253 }
19c9c466 254go_write:
e5d2385e
JK		 255 /*
256 * Both of fdatasync() and fsync() are able to be recovered from
257 * sudden-power-off.
258 */
91942321 259 down_read(&F2FS_I(inode)->i_sem);
a5fd5050 260 cp_reason = need_do_checkpoint(inode);
91942321 261 up_read(&F2FS_I(inode)->i_sem);
d928bfbf 262
a5fd5050 263 if (cp_reason) {
fbfa2cc5
JK		 264 /* all the dirty node pages should be flushed for POR */
265 ret = f2fs_sync_fs(inode->i_sb, 1);
d928bfbf 266
51455b19
CL		 267 /*
268 * We've secured consistency through sync_fs. Following pino
269 * will be used only for fsynced inodes after checkpoint.
270 */
271 try_to_fix_pino(inode);
91942321
JK		 272 clear_inode_flag(inode, FI_APPEND_WRITE);
273 clear_inode_flag(inode, FI_UPDATE_WRITE);
51455b19
CL		 274 goto out;
275 }
88bd02c9 276sync_nodes:
c29fd0c0 277 atomic_inc(&sbi->wb_sync_req[NODE]);
4d57b86d 278 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic);
c29fd0c0 279 atomic_dec(&sbi->wb_sync_req[NODE]);
c267ec15
JK		 280 if (ret)
281 goto out;
51455b19 282
871f599f 283 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 284 if (unlikely(f2fs_cp_error(sbi))) {
285 ret = -EIO;
871f599f 286 goto out;
6d5a1495 287 }
871f599f 288
4d57b86d 289 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 290 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 291 f2fs_write_inode(inode, NULL);
292 goto sync_nodes;
fbfa2cc5 293 }
51455b19 294
b6a245eb
JK		 295 /*
296 * If it's atomic_write, it's just fine to keep write ordering. So
297 * here we don't need to wait for node write completion, since we use
298 * node chain which serializes node blocks. If one of node writes are
299 * reordered, we can see simply broken chain, resulting in stopping
300 * roll-forward recovery. It means we'll recover all or none node blocks
301 * given fsync mark.
302 */
303 if (!atomic) {
4d57b86d 304 ret = f2fs_wait_on_node_pages_writeback(sbi, ino);
b6a245eb
JK		 305 if (ret)
306 goto out;
307 }
51455b19
CL		 308
309 /* once recovery info is written, don't need to tack this */
4d57b86d 310 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 311 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 312flush_out:
d6290814 313 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 314 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 315 if (!ret) {
4d57b86d 316 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 317 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 318 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 319 }
d0239e1b 320 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 321out:
a5fd5050 322 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 323 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 324 return ret;
325}
326
608514de
JK		 327int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
328{
1f227a3e
JK		 329 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
330 return -EIO;
608514de
JK		 331 return f2fs_do_sync_file(file, start, end, datasync, false);
332}
333
7f7670fe
JK		 334static pgoff_t __get_first_dirty_index(struct address_space *mapping,
335 pgoff_t pgofs, int whence)
336{
8faab642 337 struct page *page;
7f7670fe
JK		 338 int nr_pages;
339
340 if (whence != SEEK_DATA)
341 return 0;
342
343 /* find first dirty page index */
8faab642
JK		 344 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
345 1, &page);
346 if (!nr_pages)
347 return ULONG_MAX;
348 pgofs = page->index;
349 put_page(page);
7f7670fe
JK		 350 return pgofs;
351}
352
353static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
354 int whence)
355{
356 switch (whence) {
357 case SEEK_DATA:
358 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
7b525dd0 359 is_valid_blkaddr(blkaddr))
7f7670fe
JK		 360 return true;
361 break;
362 case SEEK_HOLE:
363 if (blkaddr == NULL_ADDR)
364 return true;
365 break;
366 }
367 return false;
368}
369
267378d4
CY		 370static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
371{
372 struct inode *inode = file->f_mapping->host;
373 loff_t maxbytes = inode->i_sb->s_maxbytes;
374 struct dnode_of_data dn;
7f7670fe
JK		 375 pgoff_t pgofs, end_offset, dirty;
376 loff_t data_ofs = offset;
377 loff_t isize;
267378d4
CY		 378 int err = 0;
379
5955102c 380 inode_lock(inode);
267378d4
CY		 381
382 isize = i_size_read(inode);
383 if (offset >= isize)
384 goto fail;
385
386 /* handle inline data case */
622f28ae 387 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 388 if (whence == SEEK_HOLE)
389 data_ofs = isize;
390 goto found;
391 }
392
09cbfeaf 393 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 394
7f7670fe
JK		 395 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
396
09cbfeaf 397 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 398 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 399 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 400 if (err && err != -ENOENT) {
401 goto fail;
402 } else if (err == -ENOENT) {
e1c42045 403 /* direct node does not exists */
267378d4 404 if (whence == SEEK_DATA) {
4d57b86d 405 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 406 continue;
407 } else {
408 goto found;
409 }
410 }
411
81ca7350 412 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 413
414 /* find data/hole in dnode block */
415 for (; dn.ofs_in_node < end_offset;
416 dn.ofs_in_node++, pgofs++,
09cbfeaf 417 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 418 block_t blkaddr;
f11e98bd 419
7a2af766
CY		 420 blkaddr = datablock_addr(dn.inode,
421 dn.node_page, dn.ofs_in_node);
267378d4 422
7f7670fe 423 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
267378d4
CY		 424 f2fs_put_dnode(&dn);
425 goto found;
426 }
427 }
428 f2fs_put_dnode(&dn);
429 }
430
431 if (whence == SEEK_DATA)
432 goto fail;
267378d4 433found:
fe369bc8
JK		 434 if (whence == SEEK_HOLE && data_ofs > isize)
435 data_ofs = isize;
5955102c 436 inode_unlock(inode);
267378d4
CY		 437 return vfs_setpos(file, data_ofs, maxbytes);
438fail:
5955102c 439 inode_unlock(inode);
267378d4
CY		 440 return -ENXIO;
441}
442
443static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
444{
445 struct inode *inode = file->f_mapping->host;
446 loff_t maxbytes = inode->i_sb->s_maxbytes;
447
448 switch (whence) {
449 case SEEK_SET:
450 case SEEK_CUR:
451 case SEEK_END:
452 return generic_file_llseek_size(file, offset, whence,
453 maxbytes, i_size_read(inode));
454 case SEEK_DATA:
455 case SEEK_HOLE:
0b4c5afd
JK		 456 if (offset < 0)
457 return -ENXIO;
267378d4
CY		 458 return f2fs_seek_block(file, offset, whence);
459 }
460
461 return -EINVAL;
462}
463
fbfa2cc5
JK		 464static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
465{
b3d208f9 466 struct inode *inode = file_inode(file);
b9d777b8 467 int err;
b3d208f9 468
1f227a3e
JK		 469 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
470 return -EIO;
471
b3d208f9 472 /* we don't need to use inline_data strictly */
b9d777b8
JK		 473 err = f2fs_convert_inline_inode(inode);
474 if (err)
475 return err;
b3d208f9 476
fbfa2cc5
JK		 477 file_accessed(file);
478 vma->vm_ops = &f2fs_file_vm_ops;
479 return 0;
480}
481
fcc85a4d
JK		 482static int f2fs_file_open(struct inode *inode, struct file *filp)
483{
2e168c82 484 int err = fscrypt_file_open(inode, filp);
fcc85a4d 485
2e168c82
EB		 486 if (err)
487 return err;
b91050a8
HL		 488
489 filp->f_mode |= FMODE_NOWAIT;
490
0abd675e 491 return dquot_file_open(inode, filp);
fcc85a4d
JK		 492}
493
4d57b86d 494void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 495{
4081363f 496 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 497 struct f2fs_node *raw_node;
19b2c30d 498 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 499 __le32 *addr;
7a2af766
CY		 500 int base = 0;
501
502 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
503 base = get_extra_isize(dn->inode);
fbfa2cc5 504
45590710 505 raw_node = F2FS_NODE(dn->node_page);
7a2af766 506 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 507
6c311ec6 508 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
fbfa2cc5 509 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 510
fbfa2cc5
JK		 511 if (blkaddr == NULL_ADDR)
512 continue;
513
e1509cf2 514 dn->data_blkaddr = NULL_ADDR;
4d57b86d
CY		 515 f2fs_set_data_blkaddr(dn);
516 f2fs_invalidate_blocks(sbi, blkaddr);
3c6c2beb 517 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 518 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
fbfa2cc5
JK		 519 nr_free++;
520 }
19b2c30d 521
fbfa2cc5 522 if (nr_free) {
19b2c30d
CY		 523 pgoff_t fofs;
524 /*
525 * once we invalidate valid blkaddr in range [ofs, ofs + count],
526 * we will invalidate all blkaddr in the whole range.
527 */
4d57b86d 528 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 529 dn->inode) + ofs;
19b2c30d 530 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 531 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 532 }
533 dn->ofs_in_node = ofs;
51dd6249 534
d0239e1b 535 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 536 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
537 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 538}
539
4d57b86d 540void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 541{
4d57b86d 542 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
fbfa2cc5
JK		 543}
544
0bfcfcca 545static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 546 bool cache_only)
fbfa2cc5 547{
193bea1d 548 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 549 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 550 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 551 struct page *page;
552
43f3eae1 553 if (!offset && !cache_only)
b3d208f9 554 return 0;
fbfa2cc5 555
43f3eae1 556 if (cache_only) {
34b5d5c2 557 page = find_lock_page(mapping, index);
43f3eae1
JK		 558 if (page && PageUptodate(page))
559 goto truncate_out;
560 f2fs_put_page(page, 1);
b3d208f9 561 return 0;
43f3eae1 562 }
fbfa2cc5 563
4d57b86d 564 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 565 if (IS_ERR(page))
a78aaa2c 566 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 567truncate_out:
fec1d657 568 f2fs_wait_on_page_writeback(page, DATA, true);
09cbfeaf 569 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 570
571 /* An encrypted inode should have a key and truncate the last page. */
572 f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode));
573 if (!cache_only)
0bfcfcca 574 set_page_dirty(page);
fbfa2cc5 575 f2fs_put_page(page, 1);
b3d208f9 576 return 0;
fbfa2cc5
JK		 577}
578
4d57b86d 579int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 580{
4081363f 581 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 582 struct dnode_of_data dn;
583 pgoff_t free_from;
9ffe0fb5 584 int count = 0, err = 0;
b3d208f9 585 struct page *ipage;
0bfcfcca 586 bool truncate_page = false;
fbfa2cc5 587
51dd6249
NJ		 588 trace_f2fs_truncate_blocks_enter(inode, from);
589
df033caf 590 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 591
09210c97
CY		 592 if (free_from >= sbi->max_file_blocks)
593 goto free_partial;
594
764aa3e9
JK		 595 if (lock)
596 f2fs_lock_op(sbi);
9ffe0fb5 597
4d57b86d 598 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 599 if (IS_ERR(ipage)) {
600 err = PTR_ERR(ipage);
601 goto out;
602 }
603
604 if (f2fs_has_inline_data(inode)) {
4d57b86d 605 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 606 f2fs_put_page(ipage, 1);
0bfcfcca 607 truncate_page = true;
b3d208f9
JK		 608 goto out;
609 }
610
611 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 612 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 613 if (err) {
614 if (err == -ENOENT)
615 goto free_next;
b3d208f9 616 goto out;
1ce86bf6
JK		 617 }
618
81ca7350 619 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 620
621 count -= dn.ofs_in_node;
9850cf4a 622 f2fs_bug_on(sbi, count < 0);
39936837 623
fbfa2cc5 624 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 625 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 626 free_from += count;
627 }
628
629 f2fs_put_dnode(&dn);
630free_next:
4d57b86d 631 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 632out:
633 if (lock)
634 f2fs_unlock_op(sbi);
09210c97 635free_partial:
b3d208f9
JK		 636 /* lastly zero out the first data page */
637 if (!err)
0bfcfcca 638 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 639
51dd6249 640 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 641 return err;
642}
643
9a449e9c 644int f2fs_truncate(struct inode *inode)
fbfa2cc5 645{
b0154891
CY		 646 int err;
647
1f227a3e
JK		 648 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
649 return -EIO;
650
fbfa2cc5
JK		 651 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
652 S_ISLNK(inode->i_mode)))
b0154891 653 return 0;
fbfa2cc5 654
51dd6249
NJ		 655 trace_f2fs_truncate(inode);
656
14b44d23
JK		 657#ifdef CONFIG_F2FS_FAULT_INJECTION
658 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
659 f2fs_show_injection_info(FAULT_TRUNCATE);
660 return -EIO;
661 }
662#endif
92dffd01 663 /* we should check inline_data size */
b9d777b8 664 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 665 err = f2fs_convert_inline_inode(inode);
666 if (err)
667 return err;
92dffd01
JK		 668 }
669
4d57b86d 670 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 671 if (err)
672 return err;
673
078cd827 674 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 675 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 676 return 0;
fbfa2cc5
JK		 677}
678
a528d35e 679int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 680 u32 request_mask, unsigned int query_flags)
fbfa2cc5 681{
a528d35e 682 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 683 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 684 struct f2fs_inode *ri;
1c6d8ee4
CY		 685 unsigned int flags;
686
1c1d35df
CY		 687 if (f2fs_has_extra_attr(inode) &&
688 f2fs_sb_has_inode_crtime(inode->i_sb) &&
689 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
690 stat->result_mask |= STATX_BTIME;
691 stat->btime.tv_sec = fi->i_crtime.tv_sec;
692 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
693 }
694
c807a7cb 695 flags = fi->i_flags & F2FS_FL_USER_VISIBLE;
59c84408 696 if (flags & F2FS_APPEND_FL)
1c6d8ee4 697 stat->attributes |= STATX_ATTR_APPEND;
59c84408 698 if (flags & F2FS_COMPR_FL)
1c6d8ee4
CY		 699 stat->attributes |= STATX_ATTR_COMPRESSED;
700 if (f2fs_encrypted_inode(inode))
701 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 702 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 703 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 704 if (flags & F2FS_NODUMP_FL)
1c6d8ee4
CY		 705 stat->attributes |= STATX_ATTR_NODUMP;
706
707 stat->attributes_mask |= (STATX_ATTR_APPEND |
708 STATX_ATTR_COMPRESSED |
709 STATX_ATTR_ENCRYPTED |
710 STATX_ATTR_IMMUTABLE |
711 STATX_ATTR_NODUMP);
712
fbfa2cc5 713 generic_fillattr(inode, stat);
5b4267d1
JK		 714
715 /* we need to show initial sectors used for inline_data/dentries */
716 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
717 f2fs_has_inline_dentry(inode))
718 stat->blocks += (stat->size + 511) >> 9;
719
fbfa2cc5
JK		 720 return 0;
721}
722
723#ifdef CONFIG_F2FS_FS_POSIX_ACL
724static void __setattr_copy(struct inode *inode, const struct iattr *attr)
725{
fbfa2cc5
JK		 726 unsigned int ia_valid = attr->ia_valid;
727
728 if (ia_valid & ATTR_UID)
729 inode->i_uid = attr->ia_uid;
730 if (ia_valid & ATTR_GID)
731 inode->i_gid = attr->ia_gid;
732 if (ia_valid & ATTR_ATIME)
95582b00
DD		 733 inode->i_atime = timespec64_trunc(attr->ia_atime,
734 inode->i_sb->s_time_gran);
fbfa2cc5 735 if (ia_valid & ATTR_MTIME)
95582b00
DD		 736 inode->i_mtime = timespec64_trunc(attr->ia_mtime,
737 inode->i_sb->s_time_gran);
fbfa2cc5 738 if (ia_valid & ATTR_CTIME)
95582b00
DD		 739 inode->i_ctime = timespec64_trunc(attr->ia_ctime,
740 inode->i_sb->s_time_gran);
fbfa2cc5
JK		 741 if (ia_valid & ATTR_MODE) {
742 umode_t mode = attr->ia_mode;
743
744 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
745 mode &= ~S_ISGID;
91942321 746 set_acl_inode(inode, mode);
fbfa2cc5
JK		 747 }
748}
749#else
750#define __setattr_copy setattr_copy
751#endif
752
753int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
754{
2b0143b5 755 struct inode *inode = d_inode(dentry);
fbfa2cc5 756 int err;
c0ed4405 757 bool size_changed = false;
fbfa2cc5 758
1f227a3e
JK		 759 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
760 return -EIO;
761
31051c85 762 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 763 if (err)
764 return err;
765
20bb2479
EB		 766 err = fscrypt_prepare_setattr(dentry, attr);
767 if (err)
768 return err;
769
0abd675e
CY		 770 if (is_quota_modification(inode, attr)) {
771 err = dquot_initialize(inode);
772 if (err)
773 return err;
774 }
775 if ((attr->ia_valid & ATTR_UID &&
776 !uid_eq(attr->ia_uid, inode->i_uid)) ||
777 (attr->ia_valid & ATTR_GID &&
778 !gid_eq(attr->ia_gid, inode->i_gid))) {
779 err = dquot_transfer(inode, attr);
780 if (err)
781 return err;
782 }
783
09db6a2e 784 if (attr->ia_valid & ATTR_SIZE) {
3c454145 785 if (attr->ia_size <= i_size_read(inode)) {
5a3a2d83 786 down_write(&F2FS_I(inode)->i_mmap_sem);
09db6a2e 787 truncate_setsize(inode, attr->ia_size);
9a449e9c 788 err = f2fs_truncate(inode);
5a3a2d83 789 up_write(&F2FS_I(inode)->i_mmap_sem);
b0154891
CY		 790 if (err)
791 return err;
09db6a2e
CY		 792 } else {
793 /*
3c454145
CY		 794 * do not trim all blocks after i_size if target size is
795 * larger than i_size.
09db6a2e 796 */
5a3a2d83 797 down_write(&F2FS_I(inode)->i_mmap_sem);
3c454145 798 truncate_setsize(inode, attr->ia_size);
5a3a2d83 799 up_write(&F2FS_I(inode)->i_mmap_sem);
0cab80ee
CY		 800
801 /* should convert inline inode here */
b9d777b8 802 if (!f2fs_may_inline_data(inode)) {
0cab80ee
CY		 803 err = f2fs_convert_inline_inode(inode);
804 if (err)
805 return err;
806 }
078cd827 807 inode->i_mtime = inode->i_ctime = current_time(inode);
09db6a2e 808 }
c0ed4405 809
a0d00fad
CY		 810 down_write(&F2FS_I(inode)->i_sem);
811 F2FS_I(inode)->last_disk_size = i_size_read(inode);
812 up_write(&F2FS_I(inode)->i_sem);
813
c0ed4405 814 size_changed = true;
fbfa2cc5
JK		 815 }
816
817 __setattr_copy(inode, attr);
818
819 if (attr->ia_valid & ATTR_MODE) {
4d57b86d 820 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
91942321
JK		 821 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
822 inode->i_mode = F2FS_I(inode)->i_acl_mode;
823 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 824 }
825 }
826
c0ed4405
YH		 827 /* file size may changed here */
828 f2fs_mark_inode_dirty_sync(inode, size_changed);
15d04354
JK		 829
830 /* inode change will produce dirty node pages flushed by checkpoint */
831 f2fs_balance_fs(F2FS_I_SB(inode), true);
832
fbfa2cc5
JK		 833 return err;
834}
835
836const struct inode_operations f2fs_file_inode_operations = {
837 .getattr = f2fs_getattr,
838 .setattr = f2fs_setattr,
839 .get_acl = f2fs_get_acl,
a6dda0e6 840 .set_acl = f2fs_set_acl,
fbfa2cc5 841#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 842 .listxattr = f2fs_listxattr,
fbfa2cc5 843#endif
9ab70134 844 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 845};
846
6394328a 847static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 848 loff_t start, loff_t len)
849{
4081363f 850 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 851 struct page *page;
852
853 if (!len)
6394328a 854 return 0;
fbfa2cc5 855
2c4db1a6 856 f2fs_balance_fs(sbi, true);
bd43df02 857
e479556b 858 f2fs_lock_op(sbi);
4d57b86d 859 page = f2fs_get_new_data_page(inode, NULL, index, false);
e479556b 860 f2fs_unlock_op(sbi);
fbfa2cc5 861
6394328a
CY		 862 if (IS_ERR(page))
863 return PTR_ERR(page);
864
fec1d657 865 f2fs_wait_on_page_writeback(page, DATA, true);
6394328a
CY		 866 zero_user(page, start, len);
867 set_page_dirty(page);
868 f2fs_put_page(page, 1);
869 return 0;
fbfa2cc5
JK		 870}
871
4d57b86d 872int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
fbfa2cc5 873{
fbfa2cc5
JK		 874 int err;
875
ea58711e 876 while (pg_start < pg_end) {
fbfa2cc5 877 struct dnode_of_data dn;
ea58711e 878 pgoff_t end_offset, count;
9eaeba70 879
fbfa2cc5 880 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 881 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 882 if (err) {
ea58711e 883 if (err == -ENOENT) {
4d57b86d
CY		 884 pg_start = f2fs_get_next_page_offset(&dn,
885 pg_start);
fbfa2cc5 886 continue;
ea58711e 887 }
fbfa2cc5
JK		 888 return err;
889 }
890
81ca7350 891 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 892 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
893
894 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
895
4d57b86d 896 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5 897 f2fs_put_dnode(&dn);
ea58711e
CY		 898
899 pg_start += count;
fbfa2cc5
JK		 900 }
901 return 0;
902}
903
a66c7b2f 904static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 905{
906 pgoff_t pg_start, pg_end;
907 loff_t off_start, off_end;
b9d777b8 908 int ret;
fbfa2cc5 909
b9d777b8
JK		 910 ret = f2fs_convert_inline_inode(inode);
911 if (ret)
912 return ret;
9ffe0fb5 913
09cbfeaf
KS		 914 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
915 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 916
09cbfeaf
KS		 917 off_start = offset & (PAGE_SIZE - 1);
918 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 919
920 if (pg_start == pg_end) {
6394328a 921 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 922 off_end - off_start);
6394328a
CY		 923 if (ret)
924 return ret;
fbfa2cc5 925 } else {
6394328a
CY		 926 if (off_start) {
927 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 928 PAGE_SIZE - off_start);
6394328a
CY		 929 if (ret)
930 return ret;
931 }
932 if (off_end) {
933 ret = fill_zero(inode, pg_end, 0, off_end);
934 if (ret)
935 return ret;
936 }
fbfa2cc5
JK		 937
938 if (pg_start < pg_end) {
939 struct address_space *mapping = inode->i_mapping;
940 loff_t blk_start, blk_end;
4081363f 941 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 942
2c4db1a6 943 f2fs_balance_fs(sbi, true);
fbfa2cc5 944
09cbfeaf
KS		 945 blk_start = (loff_t)pg_start << PAGE_SHIFT;
946 blk_end = (loff_t)pg_end << PAGE_SHIFT;
5a3a2d83 947 down_write(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 948 truncate_inode_pages_range(mapping, blk_start,
949 blk_end - 1);
39936837 950
e479556b 951 f2fs_lock_op(sbi);
4d57b86d 952 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
e479556b 953 f2fs_unlock_op(sbi);
5a3a2d83 954 up_write(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 955 }
956 }
957
fbfa2cc5
JK		 958 return ret;
959}
960
0a2aa8fb
JK		 961static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
962 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 963{
964 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
965 struct dnode_of_data dn;
0a2aa8fb 966 int ret, done, i;
ecbaa406 967
0a2aa8fb 968next_dnode:
6e2c64ad 969 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 970 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 971 if (ret && ret != -ENOENT) {
972 return ret;
973 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 974 if (dn.max_level == 0)
975 return -ENOENT;
976 done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len);
977 blkaddr += done;
978 do_replace += done;
979 goto next;
980 }
981
982 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
983 dn.ofs_in_node, len);
984 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 985 *blkaddr = datablock_addr(dn.inode,
986 dn.node_page, dn.ofs_in_node);
4d57b86d 987 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb
JK		 988
989 if (test_opt(sbi, LFS)) {
990 f2fs_put_dnode(&dn);
991 return -ENOTSUPP;
992 }
993
6e2c64ad 994 /* do not invalidate this block address */
f28b3434 995 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 996 *do_replace = 1;
b4ace337 997 }
6e2c64ad 998 }
0a2aa8fb
JK		 999 f2fs_put_dnode(&dn);
1000next:
1001 len -= done;
1002 off += done;
1003 if (len)
1004 goto next_dnode;
1005 return 0;
1006}
b4ace337 1007
0a2aa8fb
JK		 1008static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1009 int *do_replace, pgoff_t off, int len)
1010{
1011 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1012 struct dnode_of_data dn;
1013 int ret, i;
b4ace337 1014
0a2aa8fb
JK		 1015 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1016 if (*do_replace == 0)
1017 continue;
b4ace337 1018
0a2aa8fb 1019 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1020 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1021 if (ret) {
1022 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1023 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1024 } else {
1025 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1026 }
0a2aa8fb
JK		 1027 f2fs_put_dnode(&dn);
1028 }
1029 return 0;
1030}
1031
1032static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1033 block_t *blkaddr, int *do_replace,
1034 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1035{
1036 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1037 pgoff_t i = 0;
1038 int ret;
36abef4e 1039
0a2aa8fb
JK		 1040 while (i < len) {
1041 if (blkaddr[i] == NULL_ADDR && !full) {
1042 i++;
1043 continue;
6e2c64ad 1044 }
b4ace337 1045
0a2aa8fb
JK		 1046 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1047 struct dnode_of_data dn;
1048 struct node_info ni;
1049 size_t new_size;
1050 pgoff_t ilen;
b4ace337 1051
0a2aa8fb 1052 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1053 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1054 if (ret)
1055 return ret;
b4ace337 1056
4d57b86d 1057 f2fs_get_node_info(sbi, dn.nid, &ni);
0a2aa8fb
JK		 1058 ilen = min((pgoff_t)
1059 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1060 dn.ofs_in_node, len - i);
1061 do {
7a2af766
CY		 1062 dn.data_blkaddr = datablock_addr(dn.inode,
1063 dn.node_page, dn.ofs_in_node);
4d57b86d 1064 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1065
1066 if (do_replace[i]) {
1067 f2fs_i_blocks_write(src_inode,
0abd675e 1068 1, false, false);
0a2aa8fb 1069 f2fs_i_blocks_write(dst_inode,
0abd675e 1070 1, true, false);
0a2aa8fb
JK		 1071 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1072 blkaddr[i], ni.version, true, false);
1073
1074 do_replace[i] = 0;
1075 }
1076 dn.ofs_in_node++;
1077 i++;
1078 new_size = (dst + i) << PAGE_SHIFT;
1079 if (dst_inode->i_size < new_size)
1080 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1081 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1082
0a2aa8fb
JK		 1083 f2fs_put_dnode(&dn);
1084 } else {
1085 struct page *psrc, *pdst;
1086
4d57b86d
CY		 1087 psrc = f2fs_get_lock_data_page(src_inode,
1088 src + i, true);
0a2aa8fb
JK		 1089 if (IS_ERR(psrc))
1090 return PTR_ERR(psrc);
4d57b86d 1091 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1092 true);
1093 if (IS_ERR(pdst)) {
1094 f2fs_put_page(psrc, 1);
1095 return PTR_ERR(pdst);
1096 }
1097 f2fs_copy_page(psrc, pdst);
1098 set_page_dirty(pdst);
1099 f2fs_put_page(pdst, 1);
6e2c64ad 1100 f2fs_put_page(psrc, 1);
b4ace337 1101
4d57b86d
CY		 1102 ret = f2fs_truncate_hole(src_inode,
1103 src + i, src + i + 1);
0a2aa8fb
JK		 1104 if (ret)
1105 return ret;
1106 i++;
1107 }
6e2c64ad
JK		 1108 }
1109 return 0;
0a2aa8fb 1110}
b4ace337 1111
0a2aa8fb
JK		 1112static int __exchange_data_block(struct inode *src_inode,
1113 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1114 pgoff_t len, bool full)
0a2aa8fb
JK		 1115{
1116 block_t *src_blkaddr;
1117 int *do_replace;
363cad7f 1118 pgoff_t olen;
0a2aa8fb
JK		 1119 int ret;
1120
363cad7f
JK		 1121 while (len) {
1122 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len);
0a2aa8fb 1123
628b3d14 1124 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1125 array_size(olen, sizeof(block_t)),
1126 GFP_KERNEL);
363cad7f
JK		 1127 if (!src_blkaddr)
1128 return -ENOMEM;
0a2aa8fb 1129
628b3d14 1130 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
9d2a789c
KC		 1131 array_size(olen, sizeof(int)),
1132 GFP_KERNEL);
363cad7f
JK		 1133 if (!do_replace) {
1134 kvfree(src_blkaddr);
1135 return -ENOMEM;
1136 }
0a2aa8fb 1137
363cad7f
JK		 1138 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1139 do_replace, src, olen);
1140 if (ret)
1141 goto roll_back;
0a2aa8fb 1142
363cad7f
JK		 1143 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1144 do_replace, src, dst, olen, full);
1145 if (ret)
1146 goto roll_back;
1147
1148 src += olen;
1149 dst += olen;
1150 len -= olen;
1151
1152 kvfree(src_blkaddr);
1153 kvfree(do_replace);
1154 }
0a2aa8fb
JK		 1155 return 0;
1156
1157roll_back:
9fd62605 1158 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1159 kvfree(src_blkaddr);
1160 kvfree(do_replace);
6e2c64ad
JK		 1161 return ret;
1162}
b4ace337 1163
6e2c64ad
JK		 1164static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
1165{
1166 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1167 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
0a2aa8fb 1168 int ret;
6e2c64ad 1169
0a2aa8fb
JK		 1170 f2fs_balance_fs(sbi, true);
1171 f2fs_lock_op(sbi);
5f281fab
JK		 1172
1173 f2fs_drop_extent_tree(inode);
1174
0a2aa8fb
JK		 1175 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1176 f2fs_unlock_op(sbi);
b4ace337
CY		 1177 return ret;
1178}
1179
1180static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1181{
1182 pgoff_t pg_start, pg_end;
1183 loff_t new_size;
1184 int ret;
1185
b4ace337
CY		 1186 if (offset + len >= i_size_read(inode))
1187 return -EINVAL;
1188
1189 /* collapse range should be aligned to block size of f2fs. */
1190 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1191 return -EINVAL;
1192
b9d777b8
JK		 1193 ret = f2fs_convert_inline_inode(inode);
1194 if (ret)
1195 return ret;
97a7b2c2 1196
09cbfeaf
KS		 1197 pg_start = offset >> PAGE_SHIFT;
1198 pg_end = (offset + len) >> PAGE_SHIFT;
b4ace337 1199
21020812 1200 /* avoid gc operation during block exchange */
b2532c69 1201 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
21020812 1202
5a3a2d83 1203 down_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337
CY		 1204 /* write out all dirty pages from offset */
1205 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1206 if (ret)
21020812 1207 goto out_unlock;
bb06664a 1208
b4ace337
CY		 1209 truncate_pagecache(inode, offset);
1210
1211 ret = f2fs_do_collapse(inode, pg_start, pg_end);
1212 if (ret)
bb06664a 1213 goto out_unlock;
b4ace337 1214
6e2c64ad
JK		 1215 /* write out all moved pages, if possible */
1216 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1217 truncate_pagecache(inode, offset);
1218
b4ace337 1219 new_size = i_size_read(inode) - len;
6e2c64ad 1220 truncate_pagecache(inode, new_size);
b4ace337 1221
4d57b86d 1222 ret = f2fs_truncate_blocks(inode, new_size, true);
b4ace337 1223 if (!ret)
fc9581c8 1224 f2fs_i_size_write(inode, new_size);
bb06664a 1225out_unlock:
5a3a2d83 1226 up_write(&F2FS_I(inode)->i_mmap_sem);
b2532c69 1227 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1228 return ret;
1229}
1230
6e961949
CY		 1231static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1232 pgoff_t end)
1233{
1234 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1235 pgoff_t index = start;
1236 unsigned int ofs_in_node = dn->ofs_in_node;
1237 blkcnt_t count = 0;
1238 int ret;
1239
1240 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1241 if (datablock_addr(dn->inode, dn->node_page,
1242 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1243 count++;
1244 }
1245
1246 dn->ofs_in_node = ofs_in_node;
4d57b86d 1247 ret = f2fs_reserve_new_blocks(dn, count);
6e961949
CY		 1248 if (ret)
1249 return ret;
1250
1251 dn->ofs_in_node = ofs_in_node;
1252 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1253 dn->data_blkaddr = datablock_addr(dn->inode,
1254 dn->node_page, dn->ofs_in_node);
6e961949 1255 /*
4d57b86d 1256 * f2fs_reserve_new_blocks will not guarantee entire block
6e961949
CY		 1257 * allocation.
1258 */
1259 if (dn->data_blkaddr == NULL_ADDR) {
1260 ret = -ENOSPC;
1261 break;
1262 }
1263 if (dn->data_blkaddr != NEW_ADDR) {
4d57b86d 1264 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
6e961949 1265 dn->data_blkaddr = NEW_ADDR;
4d57b86d 1266 f2fs_set_data_blkaddr(dn);
6e961949
CY		 1267 }
1268 }
1269
1270 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1271
1272 return ret;
1273}
1274
75cd4e09
CY		 1275static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1276 int mode)
1277{
1278 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1279 struct address_space *mapping = inode->i_mapping;
1280 pgoff_t index, pg_start, pg_end;
1281 loff_t new_size = i_size_read(inode);
1282 loff_t off_start, off_end;
1283 int ret = 0;
1284
75cd4e09
CY		 1285 ret = inode_newsize_ok(inode, (len + offset));
1286 if (ret)
1287 return ret;
1288
b9d777b8
JK		 1289 ret = f2fs_convert_inline_inode(inode);
1290 if (ret)
1291 return ret;
75cd4e09 1292
5a3a2d83 1293 down_write(&F2FS_I(inode)->i_mmap_sem);
75cd4e09
CY		 1294 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1295 if (ret)
5a3a2d83 1296 goto out_sem;
75cd4e09
CY		 1297
1298 truncate_pagecache_range(inode, offset, offset + len - 1);
1299
09cbfeaf
KS		 1300 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1301 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1302
09cbfeaf
KS		 1303 off_start = offset & (PAGE_SIZE - 1);
1304 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1305
1306 if (pg_start == pg_end) {
6394328a
CY		 1307 ret = fill_zero(inode, pg_start, off_start,
1308 off_end - off_start);
1309 if (ret)
5a3a2d83 1310 goto out_sem;
6394328a 1311
75cd4e09
CY		 1312 new_size = max_t(loff_t, new_size, offset + len);
1313 } else {
1314 if (off_start) {
6394328a 1315 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1316 PAGE_SIZE - off_start);
6394328a 1317 if (ret)
5a3a2d83 1318 goto out_sem;
6394328a 1319
75cd4e09 1320 new_size = max_t(loff_t, new_size,
09cbfeaf 1321 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1322 }
1323
6e961949 1324 for (index = pg_start; index < pg_end;) {
75cd4e09 1325 struct dnode_of_data dn;
6e961949
CY		 1326 unsigned int end_offset;
1327 pgoff_t end;
75cd4e09
CY		 1328
1329 f2fs_lock_op(sbi);
1330
6e961949 1331 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1332 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1333 if (ret) {
1334 f2fs_unlock_op(sbi);
1335 goto out;
1336 }
1337
6e961949
CY		 1338 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1339 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1340
1341 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09
CY		 1342 f2fs_put_dnode(&dn);
1343 f2fs_unlock_op(sbi);
9434fcde
CY		 1344
1345 f2fs_balance_fs(sbi, dn.node_changed);
1346
6e961949
CY		 1347 if (ret)
1348 goto out;
75cd4e09 1349
6e961949 1350 index = end;
75cd4e09 1351 new_size = max_t(loff_t, new_size,
6e961949 1352 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1353 }
1354
1355 if (off_end) {
6394328a
CY		 1356 ret = fill_zero(inode, pg_end, 0, off_end);
1357 if (ret)
1358 goto out;
1359
75cd4e09
CY		 1360 new_size = max_t(loff_t, new_size, offset + len);
1361 }
1362 }
1363
1364out:
17cd07ae
CY		 1365 if (new_size > i_size_read(inode)) {
1366 if (mode & FALLOC_FL_KEEP_SIZE)
1367 file_set_keep_isize(inode);
1368 else
1369 f2fs_i_size_write(inode, new_size);
1370 }
5a3a2d83
QS		 1371out_sem:
1372 up_write(&F2FS_I(inode)->i_mmap_sem);
75cd4e09
CY		 1373
1374 return ret;
1375}
1376
f62185d0
CY		 1377static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1378{
1379 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1380 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1381 loff_t new_size;
6e2c64ad 1382 int ret = 0;
f62185d0 1383
f62185d0 1384 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1385 ret = inode_newsize_ok(inode, new_size);
1386 if (ret)
1387 return ret;
f62185d0
CY		 1388
1389 if (offset >= i_size_read(inode))
1390 return -EINVAL;
1391
1392 /* insert range should be aligned to block size of f2fs. */
1393 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1394 return -EINVAL;
1395
b9d777b8
JK		 1396 ret = f2fs_convert_inline_inode(inode);
1397 if (ret)
1398 return ret;
97a7b2c2 1399
2c4db1a6 1400 f2fs_balance_fs(sbi, true);
2a340760 1401
21020812 1402 /* avoid gc operation during block exchange */
b2532c69 1403 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
21020812 1404
5a3a2d83 1405 down_write(&F2FS_I(inode)->i_mmap_sem);
4d57b86d 1406 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
f62185d0 1407 if (ret)
5a3a2d83 1408 goto out;
f62185d0
CY		 1409
1410 /* write out all dirty pages from offset */
1411 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1412 if (ret)
5a3a2d83 1413 goto out;
f62185d0
CY		 1414
1415 truncate_pagecache(inode, offset);
1416
09cbfeaf
KS		 1417 pg_start = offset >> PAGE_SHIFT;
1418 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1419 delta = pg_end - pg_start;
0a2aa8fb
JK		 1420 idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1421
1422 while (!ret && idx > pg_start) {
1423 nr = idx - pg_start;
1424 if (nr > delta)
1425 nr = delta;
1426 idx -= nr;
f62185d0 1427
f62185d0 1428 f2fs_lock_op(sbi);
5f281fab
JK		 1429 f2fs_drop_extent_tree(inode);
1430
0a2aa8fb
JK		 1431 ret = __exchange_data_block(inode, inode, idx,
1432 idx + delta, nr, false);
f62185d0
CY		 1433 f2fs_unlock_op(sbi);
1434 }
1435
6e2c64ad
JK		 1436 /* write out all moved pages, if possible */
1437 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1438 truncate_pagecache(inode, offset);
1439
1440 if (!ret)
fc9581c8 1441 f2fs_i_size_write(inode, new_size);
5a3a2d83
QS		 1442out:
1443 up_write(&F2FS_I(inode)->i_mmap_sem);
b2532c69 1444 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f62185d0
CY		 1445 return ret;
1446}
1447
fbfa2cc5
JK		 1448static int expand_inode_data(struct inode *inode, loff_t offset,
1449 loff_t len, int mode)
1450{
4081363f 1451 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1452 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
c4020b2d 1453 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE };
e12dd7bd 1454 pgoff_t pg_end;
fbfa2cc5 1455 loff_t new_size = i_size_read(inode);
e12dd7bd 1456 loff_t off_end;
a7de6086 1457 int err;
fbfa2cc5 1458
a7de6086
JK		 1459 err = inode_newsize_ok(inode, (len + offset));
1460 if (err)
1461 return err;
fbfa2cc5 1462
a7de6086
JK		 1463 err = f2fs_convert_inline_inode(inode);
1464 if (err)
1465 return err;
9e09fc85 1466
2c4db1a6 1467 f2fs_balance_fs(sbi, true);
2a340760 1468
e12dd7bd 1469 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1470 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1471
e12dd7bd
JK		 1472 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1473 map.m_len = pg_end - map.m_lblk;
1474 if (off_end)
1475 map.m_len++;
ead43275 1476
a7de6086
JK		 1477 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1478 if (err) {
e12dd7bd 1479 pgoff_t last_off;
fbfa2cc5 1480
e12dd7bd 1481 if (!map.m_len)
a7de6086 1482 return err;
98397ff3 1483
e12dd7bd
JK		 1484 last_off = map.m_lblk + map.m_len - 1;
1485
1486 /* update new size to the failed position */
1061fd48 1487 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1488 (loff_t)(last_off + 1) << PAGE_SHIFT;
1489 } else {
1490 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1491 }
1492
e8ed90a6
CY		 1493 if (new_size > i_size_read(inode)) {
1494 if (mode & FALLOC_FL_KEEP_SIZE)
1495 file_set_keep_isize(inode);
1496 else
1497 f2fs_i_size_write(inode, new_size);
1498 }
fbfa2cc5 1499
a7de6086 1500 return err;
fbfa2cc5
JK		 1501}
1502
1503static long f2fs_fallocate(struct file *file, int mode,
1504 loff_t offset, loff_t len)
1505{
6131ffaa 1506 struct inode *inode = file_inode(file);
587c0a42 1507 long ret = 0;
fbfa2cc5 1508
1f227a3e
JK		 1509 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1510 return -EIO;
1511
c998012b
CY		 1512 /* f2fs only support ->fallocate for regular file */
1513 if (!S_ISREG(inode->i_mode))
1514 return -EINVAL;
1515
f62185d0
CY		 1516 if (f2fs_encrypted_inode(inode) &&
1517 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1518 return -EOPNOTSUPP;
1519
b4ace337 1520 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1521 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1522 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1523 return -EOPNOTSUPP;
1524
5955102c 1525 inode_lock(inode);
3375f696 1526
587c0a42
TY		 1527 if (mode & FALLOC_FL_PUNCH_HOLE) {
1528 if (offset >= inode->i_size)
1529 goto out;
1530
a66c7b2f 1531 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1532 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1533 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1534 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1535 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1536 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1537 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1538 } else {
fbfa2cc5 1539 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1540 }
fbfa2cc5 1541
3af60a49 1542 if (!ret) {
078cd827 1543 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1544 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1545 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1546 }
3375f696 1547
587c0a42 1548out:
5955102c 1549 inode_unlock(inode);
3375f696 1550
c01e2853 1551 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1552 return ret;
1553}
1554
1e84371f
JK		 1555static int f2fs_release_file(struct inode *inode, struct file *filp)
1556{
de5307e4
JK		 1557 /*
1558 * f2fs_relase_file is called at every close calls. So we should
1559 * not drop any inmemory pages by close called by other process.
1560 */
1561 if (!(filp->f_mode & FMODE_WRITE) ||
1562 atomic_read(&inode->i_writecount) != 1)
1563 return 0;
1564
1e84371f
JK		 1565 /* some remained atomic pages should discarded */
1566 if (f2fs_is_atomic_file(inode))
4d57b86d 1567 f2fs_drop_inmem_pages(inode);
1e84371f 1568 if (f2fs_is_volatile_file(inode)) {
91942321 1569 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1570 filemap_fdatawrite(inode->i_mapping);
91942321 1571 clear_inode_flag(inode, FI_DROP_CACHE);
dfa74280
CY		 1572 clear_inode_flag(inode, FI_VOLATILE_FILE);
1573 stat_dec_volatile_write(inode);
1e84371f
JK		 1574 }
1575 return 0;
1576}
1577
7a10f017 1578static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1579{
7a10f017
JK		 1580 struct inode *inode = file_inode(file);
1581
1582 /*
1583 * If the process doing a transaction is crashed, we should do
1584 * roll-back. Otherwise, other reader/write can see corrupted database
1585 * until all the writers close its file. Since this should be done
1586 * before dropping file lock, it needs to do in ->flush.
1587 */
1588 if (f2fs_is_atomic_file(inode) &&
1589 F2FS_I(inode)->inmem_task == current)
4d57b86d 1590 f2fs_drop_inmem_pages(inode);
7a10f017 1591 return 0;
fbfa2cc5
JK		 1592}
1593
52656e6c 1594static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
fbfa2cc5 1595{
6131ffaa 1596 struct inode *inode = file_inode(filp);
fbfa2cc5 1597 struct f2fs_inode_info *fi = F2FS_I(inode);
76481158
CY		 1598 unsigned int flags = fi->i_flags;
1599
1600 if (file_is_encrypt(inode))
1601 flags |= F2FS_ENCRYPT_FL;
1602 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1603 flags |= F2FS_INLINE_DATA_FL;
1604
1605 flags &= F2FS_FL_USER_VISIBLE;
1606
52656e6c
JK		 1607 return put_user(flags, (int __user *)arg);
1608}
fbfa2cc5 1609
2c1d0305
CY		 1610static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags)
1611{
1612 struct f2fs_inode_info *fi = F2FS_I(inode);
1613 unsigned int oldflags;
1614
1615 /* Is it quota file? Do not allow user to mess with it */
1616 if (IS_NOQUOTA(inode))
1617 return -EPERM;
1618
1619 flags = f2fs_mask_flags(inode->i_mode, flags);
1620
1621 oldflags = fi->i_flags;
1622
59c84408 1623 if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL))
2c1d0305
CY		 1624 if (!capable(CAP_LINUX_IMMUTABLE))
1625 return -EPERM;
1626
c807a7cb
CY		 1627 flags = flags & F2FS_FL_USER_MODIFIABLE;
1628 flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE;
2c1d0305
CY		 1629 fi->i_flags = flags;
1630
59c84408 1631 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1632 set_inode_flag(inode, FI_PROJ_INHERIT);
1633 else
1634 clear_inode_flag(inode, FI_PROJ_INHERIT);
1635
1636 inode->i_ctime = current_time(inode);
1637 f2fs_set_inode_flags(inode);
1638 f2fs_mark_inode_dirty_sync(inode, false);
1639 return 0;
1640}
1641
52656e6c
JK		 1642static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1643{
1644 struct inode *inode = file_inode(filp);
69494229 1645 unsigned int flags;
52656e6c 1646 int ret;
fbfa2cc5 1647
7fb17fe4
CY		 1648 if (!inode_owner_or_capable(inode))
1649 return -EACCES;
1650
1651 if (get_user(flags, (int __user *)arg))
1652 return -EFAULT;
1653
52656e6c
JK		 1654 ret = mnt_want_write_file(filp);
1655 if (ret)
1656 return ret;
fbfa2cc5 1657
5955102c 1658 inode_lock(inode);
fbfa2cc5 1659
2c1d0305 1660 ret = __f2fs_ioc_setflags(inode, flags);
fbfa2cc5 1661
a72d4b97 1662 inode_unlock(inode);
52656e6c
JK		 1663 mnt_drop_write_file(filp);
1664 return ret;
1665}
4b2fecc8 1666
d49f3e89
CY		 1667static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1668{
1669 struct inode *inode = file_inode(filp);
1670
1671 return put_user(inode->i_generation, (int __user *)arg);
1672}
1673
88b88a66
JK		 1674static int f2fs_ioc_start_atomic_write(struct file *filp)
1675{
1676 struct inode *inode = file_inode(filp);
f4c9c743 1677 int ret;
88b88a66
JK		 1678
1679 if (!inode_owner_or_capable(inode))
1680 return -EACCES;
1681
e811898c
JK		 1682 if (!S_ISREG(inode->i_mode))
1683 return -EINVAL;
1684
7fb17fe4
CY		 1685 ret = mnt_want_write_file(filp);
1686 if (ret)
1687 return ret;
1688
0fac558b
CY		 1689 inode_lock(inode);
1690
b2532c69 1691 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
27319ba4 1692
1e84371f 1693 if (f2fs_is_atomic_file(inode))
7fb17fe4 1694 goto out;
88b88a66 1695
f4c9c743
CY		 1696 ret = f2fs_convert_inline_inode(inode);
1697 if (ret)
7fb17fe4 1698 goto out;
88b88a66 1699
c27753d6 1700 if (!get_dirty_pages(inode))
054afda9 1701 goto skip_flush;
c27753d6
JK		 1702
1703 f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
204706c7 1704 "Unexpected flush for atomic writes: ino=%lu, npages=%u",
c27753d6
JK		 1705 inode->i_ino, get_dirty_pages(inode));
1706 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
054afda9 1707 if (ret)
684ca7e5 1708 goto out;
054afda9 1709skip_flush:
054afda9 1710 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1711 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
054afda9 1712 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
684ca7e5 1713
7a10f017 1714 F2FS_I(inode)->inmem_task = current;
26a28a0c
JK		 1715 stat_inc_atomic_write(inode);
1716 stat_update_max_atomic_write(inode);
684ca7e5 1717out:
b2532c69 1718 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
0fac558b 1719 inode_unlock(inode);
7fb17fe4 1720 mnt_drop_write_file(filp);
c27753d6 1721 return ret;
88b88a66
JK		 1722}
1723
1724static int f2fs_ioc_commit_atomic_write(struct file *filp)
1725{
1726 struct inode *inode = file_inode(filp);
1727 int ret;
1728
1729 if (!inode_owner_or_capable(inode))
1730 return -EACCES;
1731
1732 ret = mnt_want_write_file(filp);
1733 if (ret)
1734 return ret;
1735
0fac558b
CY		 1736 inode_lock(inode);
1737
b2532c69 1738 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1dc0f899 1739
b169c3c5
CY		 1740 if (f2fs_is_volatile_file(inode)) {
1741 ret = -EINVAL;
7fb17fe4 1742 goto err_out;
b169c3c5 1743 }
7fb17fe4 1744
6282adbf 1745 if (f2fs_is_atomic_file(inode)) {
4d57b86d 1746 ret = f2fs_commit_inmem_pages(inode);
5fe45743 1747 if (ret)
edb27dee 1748 goto err_out;
5fe45743 1749
26a28a0c 1750 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
5fe45743
CY		 1751 if (!ret) {
1752 clear_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1753 F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
5fe45743 1754 stat_dec_atomic_write(inode);
447135a8 1755 }
26a28a0c 1756 } else {
774e1b78 1757 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 1758 }
edb27dee 1759err_out:
2ef79ecb
CY		 1760 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
1761 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1762 ret = -EINVAL;
1763 }
b2532c69 1764 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
0fac558b 1765 inode_unlock(inode);
88b88a66
JK		 1766 mnt_drop_write_file(filp);
1767 return ret;
1768}
1769
02a1335f
JK		 1770static int f2fs_ioc_start_volatile_write(struct file *filp)
1771{
1772 struct inode *inode = file_inode(filp);
f4c9c743 1773 int ret;
02a1335f
JK		 1774
1775 if (!inode_owner_or_capable(inode))
1776 return -EACCES;
1777
8ff0971f
CY		 1778 if (!S_ISREG(inode->i_mode))
1779 return -EINVAL;
1780
7fb17fe4
CY		 1781 ret = mnt_want_write_file(filp);
1782 if (ret)
1783 return ret;
1784
0fac558b
CY		 1785 inode_lock(inode);
1786
1e84371f 1787 if (f2fs_is_volatile_file(inode))
7fb17fe4 1788 goto out;
1e84371f 1789
f4c9c743
CY		 1790 ret = f2fs_convert_inline_inode(inode);
1791 if (ret)
7fb17fe4 1792 goto out;
b3d208f9 1793
648d50ba
CY		 1794 stat_inc_volatile_write(inode);
1795 stat_update_max_volatile_write(inode);
1796
91942321 1797 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 1798 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1799out:
0fac558b 1800 inode_unlock(inode);
7fb17fe4
CY		 1801 mnt_drop_write_file(filp);
1802 return ret;
02a1335f
JK		 1803}
1804
1e84371f
JK		 1805static int f2fs_ioc_release_volatile_write(struct file *filp)
1806{
1807 struct inode *inode = file_inode(filp);
7fb17fe4 1808 int ret;
1e84371f
JK		 1809
1810 if (!inode_owner_or_capable(inode))
1811 return -EACCES;
1812
7fb17fe4
CY		 1813 ret = mnt_want_write_file(filp);
1814 if (ret)
1815 return ret;
1816
0fac558b
CY		 1817 inode_lock(inode);
1818
1e84371f 1819 if (!f2fs_is_volatile_file(inode))
7fb17fe4 1820 goto out;
1e84371f 1821
7fb17fe4
CY		 1822 if (!f2fs_is_first_block_written(inode)) {
1823 ret = truncate_partial_data_page(inode, 0, true);
1824 goto out;
1825 }
3c6c2beb 1826
7fb17fe4
CY		 1827 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1828out:
0fac558b 1829 inode_unlock(inode);
7fb17fe4
CY		 1830 mnt_drop_write_file(filp);
1831 return ret;
1e84371f
JK		 1832}
1833
1834static int f2fs_ioc_abort_volatile_write(struct file *filp)
1835{
1836 struct inode *inode = file_inode(filp);
1837 int ret;
1838
1839 if (!inode_owner_or_capable(inode))
1840 return -EACCES;
1841
1842 ret = mnt_want_write_file(filp);
1843 if (ret)
1844 return ret;
1845
0fac558b
CY		 1846 inode_lock(inode);
1847
26dc3d44 1848 if (f2fs_is_atomic_file(inode))
4d57b86d 1849 f2fs_drop_inmem_pages(inode);
732d5648 1850 if (f2fs_is_volatile_file(inode)) {
91942321 1851 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 1852 stat_dec_volatile_write(inode);
608514de 1853 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 1854 }
de6a8ec9 1855
0fac558b
CY		 1856 inode_unlock(inode);
1857
1e84371f 1858 mnt_drop_write_file(filp);
d0239e1b 1859 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 1860 return ret;
1861}
1862
1abff93d
JK		 1863static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1864{
1865 struct inode *inode = file_inode(filp);
1866 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1867 struct super_block *sb = sbi->sb;
1868 __u32 in;
7fb17fe4 1869 int ret;
1abff93d
JK		 1870
1871 if (!capable(CAP_SYS_ADMIN))
1872 return -EPERM;
1873
1874 if (get_user(in, (__u32 __user *)arg))
1875 return -EFAULT;
1876
60b2b4ee
ST		 1877 if (in != F2FS_GOING_DOWN_FULLSYNC) {
1878 ret = mnt_want_write_file(filp);
1879 if (ret)
1880 return ret;
1881 }
7fb17fe4 1882
1abff93d
JK		 1883 switch (in) {
1884 case F2FS_GOING_DOWN_FULLSYNC:
1885 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 1886 if (IS_ERR(sb)) {
1887 ret = PTR_ERR(sb);
1888 goto out;
1889 }
1890 if (sb) {
38f91ca8 1891 f2fs_stop_checkpoint(sbi, false);
1abff93d
JK		 1892 thaw_bdev(sb->s_bdev, sb);
1893 }
1894 break;
1895 case F2FS_GOING_DOWN_METASYNC:
1896 /* do checkpoint only */
d027c484
CY		 1897 ret = f2fs_sync_fs(sb, 1);
1898 if (ret)
1899 goto out;
38f91ca8 1900 f2fs_stop_checkpoint(sbi, false);
1abff93d
JK		 1901 break;
1902 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 1903 f2fs_stop_checkpoint(sbi, false);
1abff93d 1904 break;
c912a829 1905 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 1906 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 1907 f2fs_stop_checkpoint(sbi, false);
c912a829 1908 break;
1abff93d 1909 default:
7fb17fe4
CY		 1910 ret = -EINVAL;
1911 goto out;
1abff93d 1912 }
7950e9ac 1913
4d57b86d
CY		 1914 f2fs_stop_gc_thread(sbi);
1915 f2fs_stop_discard_thread(sbi);
7950e9ac 1916
4d57b86d 1917 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 1918 clear_opt(sbi, DISCARD);
1919
d0239e1b 1920 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 1921out:
60b2b4ee
ST		 1922 if (in != F2FS_GOING_DOWN_FULLSYNC)
1923 mnt_drop_write_file(filp);
7fb17fe4 1924 return ret;
1abff93d
JK		 1925}
1926
52656e6c
JK		 1927static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1928{
1929 struct inode *inode = file_inode(filp);
1930 struct super_block *sb = inode->i_sb;
1931 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1932 struct fstrim_range range;
1933 int ret;
4b2fecc8 1934
52656e6c
JK		 1935 if (!capable(CAP_SYS_ADMIN))
1936 return -EPERM;
4b2fecc8 1937
52656e6c
JK		 1938 if (!blk_queue_discard(q))
1939 return -EOPNOTSUPP;
4b2fecc8 1940
52656e6c
JK		 1941 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
1942 sizeof(range)))
1943 return -EFAULT;
4b2fecc8 1944
7fb17fe4
CY		 1945 ret = mnt_want_write_file(filp);
1946 if (ret)
1947 return ret;
1948
52656e6c
JK		 1949 range.minlen = max((unsigned int)range.minlen,
1950 q->limits.discard_granularity);
1951 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 1952 mnt_drop_write_file(filp);
52656e6c
JK		 1953 if (ret < 0)
1954 return ret;
4b2fecc8 1955
52656e6c
JK		 1956 if (copy_to_user((struct fstrim_range __user *)arg, &range,
1957 sizeof(range)))
1958 return -EFAULT;
d0239e1b 1959 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 1960 return 0;
1961}
1962
f424f664
JK		 1963static bool uuid_is_nonzero(__u8 u[16])
1964{
1965 int i;
1966
1967 for (i = 0; i < 16; i++)
1968 if (u[i])
1969 return true;
1970 return false;
1971}
1972
1973static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
1974{
f424f664
JK		 1975 struct inode *inode = file_inode(filp);
1976
ccd31cb2 1977 if (!f2fs_sb_has_encrypt(inode->i_sb))
ead710b7
CY		 1978 return -EOPNOTSUPP;
1979
d0239e1b 1980 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1981
db717d8e 1982 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 1983}
1984
1985static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
1986{
ccd31cb2 1987 if (!f2fs_sb_has_encrypt(file_inode(filp)->i_sb))
ead710b7 1988 return -EOPNOTSUPP;
db717d8e 1989 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 1990}
1991
1992static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
1993{
1994 struct inode *inode = file_inode(filp);
1995 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1996 int err;
1997
ccd31cb2 1998 if (!f2fs_sb_has_encrypt(inode->i_sb))
f424f664
JK		 1999 return -EOPNOTSUPP;
2000
f424f664
JK		 2001 err = mnt_want_write_file(filp);
2002 if (err)
2003 return err;
2004
846ae671 2005 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2006
2007 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2008 goto got_it;
2009
f424f664
JK		 2010 /* update superblock with uuid */
2011 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2012
c5bda1c8 2013 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2014 if (err) {
2015 /* undo new data */
2016 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2017 goto out_err;
f424f664
JK		 2018 }
2019got_it:
2020 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2021 16))
d0d3f1b3
CY		 2022 err = -EFAULT;
2023out_err:
846ae671 2024 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2025 mnt_drop_write_file(filp);
2026 return err;
f424f664
JK		 2027}
2028
c1c1b583
CY		 2029static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2030{
2031 struct inode *inode = file_inode(filp);
2032 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2033 __u32 sync;
7fb17fe4 2034 int ret;
c1c1b583
CY		 2035
2036 if (!capable(CAP_SYS_ADMIN))
2037 return -EPERM;
2038
d530d4d8 2039 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2040 return -EFAULT;
2041
d530d4d8
CY		 2042 if (f2fs_readonly(sbi->sb))
2043 return -EROFS;
c1c1b583 2044
7fb17fe4
CY		 2045 ret = mnt_want_write_file(filp);
2046 if (ret)
2047 return ret;
2048
d530d4d8 2049 if (!sync) {
7fb17fe4
CY		 2050 if (!mutex_trylock(&sbi->gc_mutex)) {
2051 ret = -EBUSY;
2052 goto out;
2053 }
d530d4d8
CY		 2054 } else {
2055 mutex_lock(&sbi->gc_mutex);
c1c1b583
CY		 2056 }
2057
e066b83c 2058 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2059out:
2060 mnt_drop_write_file(filp);
2061 return ret;
c1c1b583
CY		 2062}
2063
34dc77ad
JK		 2064static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2065{
2066 struct inode *inode = file_inode(filp);
2067 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2068 struct f2fs_gc_range range;
2069 u64 end;
2070 int ret;
2071
2072 if (!capable(CAP_SYS_ADMIN))
2073 return -EPERM;
2074
2075 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2076 sizeof(range)))
2077 return -EFAULT;
2078
2079 if (f2fs_readonly(sbi->sb))
2080 return -EROFS;
2081
b82f6e34
YH		 2082 end = range.start + range.len;
2083 if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) {
2084 return -EINVAL;
2085 }
2086
34dc77ad
JK		 2087 ret = mnt_want_write_file(filp);
2088 if (ret)
2089 return ret;
2090
34dc77ad
JK		 2091do_more:
2092 if (!range.sync) {
2093 if (!mutex_trylock(&sbi->gc_mutex)) {
2094 ret = -EBUSY;
2095 goto out;
2096 }
2097 } else {
2098 mutex_lock(&sbi->gc_mutex);
2099 }
2100
2101 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
2102 range.start += sbi->blocks_per_seg;
2103 if (range.start <= end)
2104 goto do_more;
2105out:
2106 mnt_drop_write_file(filp);
2107 return ret;
2108}
2109
4d57b86d 2110static int f2fs_ioc_f2fs_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2111{
2112 struct inode *inode = file_inode(filp);
2113 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2114 int ret;
456b88e4
CY		 2115
2116 if (!capable(CAP_SYS_ADMIN))
2117 return -EPERM;
2118
2119 if (f2fs_readonly(sbi->sb))
2120 return -EROFS;
2121
7fb17fe4
CY		 2122 ret = mnt_want_write_file(filp);
2123 if (ret)
2124 return ret;
2125
2126 ret = f2fs_sync_fs(sbi->sb, 1);
2127
2128 mnt_drop_write_file(filp);
2129 return ret;
456b88e4
CY		 2130}
2131
d323d005
CY		 2132static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2133 struct file *filp,
2134 struct f2fs_defragment *range)
2135{
2136 struct inode *inode = file_inode(filp);
f3d98e74
CY		 2137 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2138 .m_seg_type = NO_CHECK_TYPE };
1061fd48 2139 struct extent_info ei = {0, 0, 0};
f3d98e74 2140 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2141 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2142 unsigned int total = 0, sec_num;
d323d005
CY		 2143 block_t blk_end = 0;
2144 bool fragmented = false;
2145 int err;
2146
2147 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2148 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2149 return -EINVAL;
2150
09cbfeaf
KS		 2151 pg_start = range->start >> PAGE_SHIFT;
2152 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2153
2c4db1a6 2154 f2fs_balance_fs(sbi, true);
d323d005 2155
5955102c 2156 inode_lock(inode);
d323d005
CY		 2157
2158 /* writeback all dirty pages in the range */
2159 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2160 range->start + range->len - 1);
d323d005
CY		 2161 if (err)
2162 goto out;
2163
2164 /*
2165 * lookup mapping info in extent cache, skip defragmenting if physical
2166 * block addresses are continuous.
2167 */
2168 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2169 if (ei.fofs + ei.len >= pg_end)
2170 goto out;
2171 }
2172
2173 map.m_lblk = pg_start;
f3d98e74 2174 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2175
2176 /*
2177 * lookup mapping info in dnode page cache, skip defragmenting if all
2178 * physical block addresses are continuous even if there are hole(s)
2179 * in logical blocks.
2180 */
2181 while (map.m_lblk < pg_end) {
a1c1e9b7 2182 map.m_len = pg_end - map.m_lblk;
f2220c7f 2183 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2184 if (err)
2185 goto out;
2186
2187 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2188 map.m_lblk = next_pgofs;
d323d005
CY		 2189 continue;
2190 }
2191
25a912e5 2192 if (blk_end && blk_end != map.m_pblk)
d323d005 2193 fragmented = true;
25a912e5
CY		 2194
2195 /* record total count of block that we're going to move */
2196 total += map.m_len;
2197
d323d005
CY		 2198 blk_end = map.m_pblk + map.m_len;
2199
2200 map.m_lblk += map.m_len;
d323d005
CY		 2201 }
2202
2203 if (!fragmented)
2204 goto out;
2205
25a912e5 2206 sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
d323d005
CY		 2207
2208 /*
2209 * make sure there are enough free section for LFS allocation, this can
2210 * avoid defragment running in SSR mode when free section are allocated
2211 * intensively
2212 */
7f3037a5 2213 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2214 err = -EAGAIN;
2215 goto out;
2216 }
2217
25a912e5
CY		 2218 map.m_lblk = pg_start;
2219 map.m_len = pg_end - pg_start;
2220 total = 0;
2221
d323d005
CY		 2222 while (map.m_lblk < pg_end) {
2223 pgoff_t idx;
2224 int cnt = 0;
2225
2226do_map:
a1c1e9b7 2227 map.m_len = pg_end - map.m_lblk;
f2220c7f 2228 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2229 if (err)
2230 goto clear_out;
2231
2232 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2233 map.m_lblk = next_pgofs;
d323d005
CY		 2234 continue;
2235 }
2236
91942321 2237 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2238
2239 idx = map.m_lblk;
2240 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2241 struct page *page;
2242
4d57b86d 2243 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2244 if (IS_ERR(page)) {
2245 err = PTR_ERR(page);
2246 goto clear_out;
2247 }
2248
2249 set_page_dirty(page);
2250 f2fs_put_page(page, 1);
2251
2252 idx++;
2253 cnt++;
2254 total++;
2255 }
2256
2257 map.m_lblk = idx;
d323d005
CY		 2258
2259 if (idx < pg_end && cnt < blk_per_seg)
2260 goto do_map;
2261
91942321 2262 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2263
2264 err = filemap_fdatawrite(inode->i_mapping);
2265 if (err)
2266 goto out;
2267 }
2268clear_out:
91942321 2269 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2270out:
5955102c 2271 inode_unlock(inode);
d323d005 2272 if (!err)
09cbfeaf 2273 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2274 return err;
2275}
2276
2277static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2278{
2279 struct inode *inode = file_inode(filp);
2280 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2281 struct f2fs_defragment range;
2282 int err;
2283
2284 if (!capable(CAP_SYS_ADMIN))
2285 return -EPERM;
2286
7eab0c0d 2287 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2288 return -EINVAL;
2289
d7563861
KM		 2290 if (f2fs_readonly(sbi->sb))
2291 return -EROFS;
d323d005
CY		 2292
2293 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2294 sizeof(range)))
2295 return -EFAULT;
d323d005
CY		 2296
2297 /* verify alignment of offset & size */
d7563861
KM		 2298 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2299 return -EINVAL;
d323d005 2300
1941d7bc 2301 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2302 sbi->max_file_blocks))
2303 return -EINVAL;
2304
2305 err = mnt_want_write_file(filp);
2306 if (err)
2307 return err;
1941d7bc 2308
d323d005 2309 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2310 mnt_drop_write_file(filp);
2311
d0239e1b 2312 f2fs_update_time(sbi, REQ_TIME);
d323d005 2313 if (err < 0)
d7563861 2314 return err;
d323d005
CY		 2315
2316 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2317 sizeof(range)))
d7563861
KM		 2318 return -EFAULT;
2319
2320 return 0;
d323d005
CY		 2321}
2322
4dd6f977
JK		 2323static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2324 struct file *file_out, loff_t pos_out, size_t len)
2325{
2326 struct inode *src = file_inode(file_in);
2327 struct inode *dst = file_inode(file_out);
2328 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2329 size_t olen = len, dst_max_i_size = 0;
2330 size_t dst_osize;
2331 int ret;
2332
2333 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2334 src->i_sb != dst->i_sb)
2335 return -EXDEV;
2336
2337 if (unlikely(f2fs_readonly(src->i_sb)))
2338 return -EROFS;
2339
fe8494bf
CY		 2340 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2341 return -EINVAL;
4dd6f977
JK		 2342
2343 if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
2344 return -EOPNOTSUPP;
2345
d95fd91c
FL		 2346 if (src == dst) {
2347 if (pos_in == pos_out)
2348 return 0;
2349 if (pos_out > pos_in && pos_out < pos_in + len)
2350 return -EINVAL;
2351 }
2352
4dd6f977 2353 inode_lock(src);
b2532c69 2354 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
20a3d61d 2355 if (src != dst) {
bb06664a
CY		 2356 ret = -EBUSY;
2357 if (!inode_trylock(dst))
2358 goto out;
b2532c69 2359 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) {
bb06664a 2360 inode_unlock(dst);
20a3d61d
CY		 2361 goto out;
2362 }
2363 }
4dd6f977
JK		 2364
2365 ret = -EINVAL;
2366 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2367 goto out_unlock;
2368 if (len == 0)
2369 olen = len = src->i_size - pos_in;
2370 if (pos_in + len == src->i_size)
2371 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2372 if (len == 0) {
2373 ret = 0;
2374 goto out_unlock;
2375 }
2376
2377 dst_osize = dst->i_size;
2378 if (pos_out + olen > dst->i_size)
2379 dst_max_i_size = pos_out + olen;
2380
2381 /* verify the end result is block aligned */
2382 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2383 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2384 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2385 goto out_unlock;
2386
2387 ret = f2fs_convert_inline_inode(src);
2388 if (ret)
2389 goto out_unlock;
2390
2391 ret = f2fs_convert_inline_inode(dst);
2392 if (ret)
2393 goto out_unlock;
2394
2395 /* write out all dirty pages from offset */
2396 ret = filemap_write_and_wait_range(src->i_mapping,
2397 pos_in, pos_in + len);
2398 if (ret)
2399 goto out_unlock;
2400
2401 ret = filemap_write_and_wait_range(dst->i_mapping,
2402 pos_out, pos_out + len);
2403 if (ret)
2404 goto out_unlock;
2405
2406 f2fs_balance_fs(sbi, true);
2407 f2fs_lock_op(sbi);
61e4da11
FL		 2408 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2409 pos_out >> F2FS_BLKSIZE_BITS,
2410 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2411
2412 if (!ret) {
2413 if (dst_max_i_size)
2414 f2fs_i_size_write(dst, dst_max_i_size);
2415 else if (dst_osize != dst->i_size)
2416 f2fs_i_size_write(dst, dst_osize);
2417 }
2418 f2fs_unlock_op(sbi);
2419out_unlock:
bb06664a 2420 if (src != dst) {
b2532c69 2421 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
4dd6f977 2422 inode_unlock(dst);
bb06664a 2423 }
20a3d61d 2424out:
b2532c69 2425 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
4dd6f977
JK		 2426 inode_unlock(src);
2427 return ret;
2428}
2429
2430static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2431{
2432 struct f2fs_move_range range;
2433 struct fd dst;
2434 int err;
2435
2436 if (!(filp->f_mode & FMODE_READ) ||
2437 !(filp->f_mode & FMODE_WRITE))
2438 return -EBADF;
2439
2440 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2441 sizeof(range)))
2442 return -EFAULT;
2443
2444 dst = fdget(range.dst_fd);
2445 if (!dst.file)
2446 return -EBADF;
2447
2448 if (!(dst.file->f_mode & FMODE_WRITE)) {
2449 err = -EBADF;
2450 goto err_out;
2451 }
2452
2453 err = mnt_want_write_file(filp);
2454 if (err)
2455 goto err_out;
2456
2457 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2458 range.pos_out, range.len);
2459
2460 mnt_drop_write_file(filp);
3cecfa5f
KM		 2461 if (err)
2462 goto err_out;
4dd6f977
JK		 2463
2464 if (copy_to_user((struct f2fs_move_range __user *)arg,
2465 &range, sizeof(range)))
2466 err = -EFAULT;
2467err_out:
2468 fdput(dst);
2469 return err;
2470}
2471
e066b83c
JK		 2472static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2473{
2474 struct inode *inode = file_inode(filp);
2475 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2476 struct sit_info *sm = SIT_I(sbi);
2477 unsigned int start_segno = 0, end_segno = 0;
2478 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2479 struct f2fs_flush_device range;
2480 int ret;
2481
2482 if (!capable(CAP_SYS_ADMIN))
2483 return -EPERM;
2484
2485 if (f2fs_readonly(sbi->sb))
2486 return -EROFS;
2487
2488 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2489 sizeof(range)))
2490 return -EFAULT;
2491
2492 if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num ||
2493 sbi->segs_per_sec != 1) {
2494 f2fs_msg(sbi->sb, KERN_WARNING,
2495 "Can't flush %u in %d for segs_per_sec %u != 1\n",
2496 range.dev_num, sbi->s_ndevs,
2497 sbi->segs_per_sec);
2498 return -EINVAL;
2499 }
2500
2501 ret = mnt_want_write_file(filp);
2502 if (ret)
2503 return ret;
2504
2505 if (range.dev_num != 0)
2506 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2507 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2508
2509 start_segno = sm->last_victim[FLUSH_DEVICE];
2510 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2511 start_segno = dev_start_segno;
2512 end_segno = min(start_segno + range.segments, dev_end_segno);
2513
2514 while (start_segno < end_segno) {
2515 if (!mutex_trylock(&sbi->gc_mutex)) {
2516 ret = -EBUSY;
2517 goto out;
2518 }
2519 sm->last_victim[GC_CB] = end_segno + 1;
2520 sm->last_victim[GC_GREEDY] = end_segno + 1;
2521 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2522 ret = f2fs_gc(sbi, true, true, start_segno);
2523 if (ret == -EAGAIN)
2524 ret = 0;
2525 else if (ret < 0)
2526 break;
2527 start_segno++;
2528 }
2529out:
2530 mnt_drop_write_file(filp);
2531 return ret;
2532}
2533
e65ef207
JK		 2534static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2535{
2536 struct inode *inode = file_inode(filp);
2537 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2538
2539 /* Must validate to set it with SQLite behavior in Android. */
2540 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2541
2542 return put_user(sb_feature, (u32 __user *)arg);
2543}
e066b83c 2544
2c1d0305
CY		 2545#ifdef CONFIG_QUOTA
2546static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2547{
2548 struct inode *inode = file_inode(filp);
2549 struct f2fs_inode_info *fi = F2FS_I(inode);
2550 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2551 struct super_block *sb = sbi->sb;
2552 struct dquot *transfer_to[MAXQUOTAS] = {};
2553 struct page *ipage;
2554 kprojid_t kprojid;
2555 int err;
2556
2557 if (!f2fs_sb_has_project_quota(sb)) {
2558 if (projid != F2FS_DEF_PROJID)
2559 return -EOPNOTSUPP;
2560 else
2561 return 0;
2562 }
2563
2564 if (!f2fs_has_extra_attr(inode))
2565 return -EOPNOTSUPP;
2566
2567 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2568
2569 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2570 return 0;
2571
2572 err = mnt_want_write_file(filp);
2573 if (err)
2574 return err;
2575
2576 err = -EPERM;
2577 inode_lock(inode);
2578
2579 /* Is it quota file? Do not allow user to mess with it */
2580 if (IS_NOQUOTA(inode))
2581 goto out_unlock;
2582
4d57b86d 2583 ipage = f2fs_get_node_page(sbi, inode->i_ino);
2c1d0305
CY		 2584 if (IS_ERR(ipage)) {
2585 err = PTR_ERR(ipage);
2586 goto out_unlock;
2587 }
2588
2589 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2590 i_projid)) {
2591 err = -EOVERFLOW;
2592 f2fs_put_page(ipage, 1);
2593 goto out_unlock;
2594 }
2595 f2fs_put_page(ipage, 1);
2596
c22aecd7
CY		 2597 err = dquot_initialize(inode);
2598 if (err)
2599 goto out_unlock;
2c1d0305
CY		 2600
2601 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2602 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2603 err = __dquot_transfer(inode, transfer_to);
2604 dqput(transfer_to[PRJQUOTA]);
2605 if (err)
2606 goto out_dirty;
2607 }
2608
2609 F2FS_I(inode)->i_projid = kprojid;
2610 inode->i_ctime = current_time(inode);
2611out_dirty:
2612 f2fs_mark_inode_dirty_sync(inode, true);
2613out_unlock:
2614 inode_unlock(inode);
2615 mnt_drop_write_file(filp);
2616 return err;
2617}
2618#else
2619static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2620{
2621 if (projid != F2FS_DEF_PROJID)
2622 return -EOPNOTSUPP;
2623 return 0;
2624}
2625#endif
2626
2627/* Transfer internal flags to xflags */
2628static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags)
2629{
2630 __u32 xflags = 0;
2631
59c84408 2632 if (iflags & F2FS_SYNC_FL)
2c1d0305 2633 xflags |= FS_XFLAG_SYNC;
59c84408 2634 if (iflags & F2FS_IMMUTABLE_FL)
2c1d0305 2635 xflags |= FS_XFLAG_IMMUTABLE;
59c84408 2636 if (iflags & F2FS_APPEND_FL)
2c1d0305 2637 xflags |= FS_XFLAG_APPEND;
59c84408 2638 if (iflags & F2FS_NODUMP_FL)
2c1d0305 2639 xflags |= FS_XFLAG_NODUMP;
59c84408 2640 if (iflags & F2FS_NOATIME_FL)
2c1d0305 2641 xflags |= FS_XFLAG_NOATIME;
59c84408 2642 if (iflags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 2643 xflags |= FS_XFLAG_PROJINHERIT;
2644 return xflags;
2645}
2646
2647#define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \
2648 FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \
2649 FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT)
2650
2c1d0305
CY		 2651/* Transfer xflags flags to internal */
2652static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags)
2653{
2654 unsigned long iflags = 0;
2655
2656 if (xflags & FS_XFLAG_SYNC)
59c84408 2657 iflags |= F2FS_SYNC_FL;
2c1d0305 2658 if (xflags & FS_XFLAG_IMMUTABLE)
59c84408 2659 iflags |= F2FS_IMMUTABLE_FL;
2c1d0305 2660 if (xflags & FS_XFLAG_APPEND)
59c84408 2661 iflags |= F2FS_APPEND_FL;
2c1d0305 2662 if (xflags & FS_XFLAG_NODUMP)
59c84408 2663 iflags |= F2FS_NODUMP_FL;
2c1d0305 2664 if (xflags & FS_XFLAG_NOATIME)
59c84408 2665 iflags |= F2FS_NOATIME_FL;
2c1d0305 2666 if (xflags & FS_XFLAG_PROJINHERIT)
59c84408 2667 iflags |= F2FS_PROJINHERIT_FL;
2c1d0305
CY		 2668
2669 return iflags;
2670}
2671
2672static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
2673{
2674 struct inode *inode = file_inode(filp);
2675 struct f2fs_inode_info *fi = F2FS_I(inode);
2676 struct fsxattr fa;
2677
2678 memset(&fa, 0, sizeof(struct fsxattr));
2679 fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags &
c807a7cb 2680 F2FS_FL_USER_VISIBLE);
2c1d0305
CY		 2681
2682 if (f2fs_sb_has_project_quota(inode->i_sb))
2683 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
2684 fi->i_projid);
2685
2686 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2687 return -EFAULT;
2688 return 0;
2689}
2690
2691static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
2692{
2693 struct inode *inode = file_inode(filp);
2694 struct f2fs_inode_info *fi = F2FS_I(inode);
2695 struct fsxattr fa;
2696 unsigned int flags;
2697 int err;
2698
2699 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
2700 return -EFAULT;
2701
2702 /* Make sure caller has proper permission */
2703 if (!inode_owner_or_capable(inode))
2704 return -EACCES;
2705
2706 if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS)
2707 return -EOPNOTSUPP;
2708
2709 flags = f2fs_xflags_to_iflags(fa.fsx_xflags);
2710 if (f2fs_mask_flags(inode->i_mode, flags) != flags)
2711 return -EOPNOTSUPP;
2712
2713 err = mnt_want_write_file(filp);
2714 if (err)
2715 return err;
2716
2717 inode_lock(inode);
2718 flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) |
2719 (flags & F2FS_FL_XFLAG_VISIBLE);
2720 err = __f2fs_ioc_setflags(inode, flags);
2721 inode_unlock(inode);
2722 mnt_drop_write_file(filp);
2723 if (err)
2724 return err;
2725
2726 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
2727 if (err)
2728 return err;
2729
2730 return 0;
2731}
e066b83c 2732
1ad71a27
JK		 2733int f2fs_pin_file_control(struct inode *inode, bool inc)
2734{
2735 struct f2fs_inode_info *fi = F2FS_I(inode);
2736 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2737
2738 /* Use i_gc_failures for normal file as a risk signal. */
2739 if (inc)
2ef79ecb
CY		 2740 f2fs_i_gc_failures_write(inode,
2741 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 2742
2ef79ecb 2743 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
1ad71a27
JK		 2744 f2fs_msg(sbi->sb, KERN_WARNING,
2745 "%s: Enable GC = ino %lx after %x GC trials\n",
2ef79ecb
CY		 2746 __func__, inode->i_ino,
2747 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 2748 clear_inode_flag(inode, FI_PIN_FILE);
2749 return -EAGAIN;
2750 }
2751 return 0;
2752}
2753
2754static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
2755{
2756 struct inode *inode = file_inode(filp);
2757 __u32 pin;
2758 int ret = 0;
2759
2760 if (!inode_owner_or_capable(inode))
2761 return -EACCES;
2762
2763 if (get_user(pin, (__u32 __user *)arg))
2764 return -EFAULT;
2765
2766 if (!S_ISREG(inode->i_mode))
2767 return -EINVAL;
2768
2769 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
2770 return -EROFS;
2771
2772 ret = mnt_want_write_file(filp);
2773 if (ret)
2774 return ret;
2775
2776 inode_lock(inode);
2777
4d57b86d 2778 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 2779 ret = -EINVAL;
2780 goto out;
2781 }
2782
1ad71a27
JK		 2783 if (!pin) {
2784 clear_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 2785 F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = 1;
1ad71a27
JK		 2786 goto done;
2787 }
2788
2789 if (f2fs_pin_file_control(inode, false)) {
2790 ret = -EAGAIN;
2791 goto out;
2792 }
2793 ret = f2fs_convert_inline_inode(inode);
2794 if (ret)
2795 goto out;
2796
2797 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 2798 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 2799done:
2800 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2801out:
2802 inode_unlock(inode);
2803 mnt_drop_write_file(filp);
2804 return ret;
2805}
2806
2807static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
2808{
2809 struct inode *inode = file_inode(filp);
2810 __u32 pin = 0;
2811
2812 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 2813 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 2814 return put_user(pin, (u32 __user *)arg);
2815}
2816
c4020b2d
CY		 2817int f2fs_precache_extents(struct inode *inode)
2818{
2819 struct f2fs_inode_info *fi = F2FS_I(inode);
2820 struct f2fs_map_blocks map;
2821 pgoff_t m_next_extent;
2822 loff_t end;
2823 int err;
2824
2825 if (is_inode_flag_set(inode, FI_NO_EXTENT))
2826 return -EOPNOTSUPP;
2827
2828 map.m_lblk = 0;
2829 map.m_next_pgofs = NULL;
2830 map.m_next_extent = &m_next_extent;
2831 map.m_seg_type = NO_CHECK_TYPE;
2832 end = F2FS_I_SB(inode)->max_file_blocks;
2833
2834 while (map.m_lblk < end) {
2835 map.m_len = end - map.m_lblk;
2836
b2532c69 2837 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 2838 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 2839 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 2840 if (err)
2841 return err;
2842
2843 map.m_lblk = m_next_extent;
2844 }
2845
2846 return err;
2847}
2848
2849static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
2850{
2851 return f2fs_precache_extents(file_inode(filp));
2852}
2853
52656e6c
JK		 2854long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2855{
1f227a3e
JK		 2856 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
2857 return -EIO;
2858
52656e6c
JK		 2859 switch (cmd) {
2860 case F2FS_IOC_GETFLAGS:
2861 return f2fs_ioc_getflags(filp, arg);
2862 case F2FS_IOC_SETFLAGS:
2863 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 2864 case F2FS_IOC_GETVERSION:
2865 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 2866 case F2FS_IOC_START_ATOMIC_WRITE:
2867 return f2fs_ioc_start_atomic_write(filp);
2868 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2869 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 2870 case F2FS_IOC_START_VOLATILE_WRITE:
2871 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 2872 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2873 return f2fs_ioc_release_volatile_write(filp);
2874 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2875 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 2876 case F2FS_IOC_SHUTDOWN:
2877 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 2878 case FITRIM:
2879 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 2880 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2881 return f2fs_ioc_set_encryption_policy(filp, arg);
2882 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2883 return f2fs_ioc_get_encryption_policy(filp, arg);
2884 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2885 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
c1c1b583
CY		 2886 case F2FS_IOC_GARBAGE_COLLECT:
2887 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 2888 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
2889 return f2fs_ioc_gc_range(filp, arg);
456b88e4 2890 case F2FS_IOC_WRITE_CHECKPOINT:
4d57b86d 2891 return f2fs_ioc_f2fs_write_checkpoint(filp, arg);
d323d005
CY		 2892 case F2FS_IOC_DEFRAGMENT:
2893 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 2894 case F2FS_IOC_MOVE_RANGE:
2895 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 2896 case F2FS_IOC_FLUSH_DEVICE:
2897 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 2898 case F2FS_IOC_GET_FEATURES:
2899 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 2900 case F2FS_IOC_FSGETXATTR:
2901 return f2fs_ioc_fsgetxattr(filp, arg);
2902 case F2FS_IOC_FSSETXATTR:
2903 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 2904 case F2FS_IOC_GET_PIN_FILE:
2905 return f2fs_ioc_get_pin_file(filp, arg);
2906 case F2FS_IOC_SET_PIN_FILE:
2907 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 2908 case F2FS_IOC_PRECACHE_EXTENTS:
2909 return f2fs_ioc_precache_extents(filp, arg);
fbfa2cc5
JK		 2910 default:
2911 return -ENOTTY;
2912 }
2913}
2914
fcc85a4d
JK		 2915static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
2916{
b439b103
JK		 2917 struct file *file = iocb->ki_filp;
2918 struct inode *inode = file_inode(file);
2919 ssize_t ret;
fcc85a4d 2920
1f227a3e
JK		 2921 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
2922 return -EIO;
2923
b91050a8
HL		 2924 if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT))
2925 return -EINVAL;
2926
2927 if (!inode_trylock(inode)) {
2928 if (iocb->ki_flags & IOCB_NOWAIT)
2929 return -EAGAIN;
2930 inode_lock(inode);
2931 }
2932
b439b103
JK		 2933 ret = generic_write_checks(iocb, from);
2934 if (ret > 0) {
dc7a10dd
JK		 2935 bool preallocated = false;
2936 size_t target_size = 0;
dc91de78 2937 int err;
a7de6086 2938
dc91de78
JK		 2939 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
2940 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 2941
b91050a8
HL		 2942 if ((iocb->ki_flags & IOCB_NOWAIT) &&
2943 (iocb->ki_flags & IOCB_DIRECT)) {
2944 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
2945 iov_iter_count(from)) ||
2946 f2fs_has_inline_data(inode) ||
2947 f2fs_force_buffered_io(inode, WRITE)) {
cba41be0
YH		 2948 clear_inode_flag(inode,
2949 FI_NO_PREALLOC);
b91050a8
HL		 2950 inode_unlock(inode);
2951 return -EAGAIN;
2952 }
2953
2954 } else {
dc7a10dd
JK		 2955 preallocated = true;
2956 target_size = iocb->ki_pos + iov_iter_count(from);
2957
b91050a8
HL		 2958 err = f2fs_preallocate_blocks(iocb, from);
2959 if (err) {
2960 clear_inode_flag(inode, FI_NO_PREALLOC);
2961 inode_unlock(inode);
2962 return err;
2963 }
9dfa1baf 2964 }
a7de6086 2965 ret = __generic_file_write_iter(iocb, from);
dc91de78 2966 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 2967
dc7a10dd
JK		 2968 /* if we couldn't write data, we should deallocate blocks. */
2969 if (preallocated && i_size_read(inode) < target_size)
2970 f2fs_truncate(inode);
2971
b0af6d49
CY		 2972 if (ret > 0)
2973 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 2974 }
2975 inode_unlock(inode);
2976
e2592217
CH		 2977 if (ret > 0)
2978 ret = generic_write_sync(iocb, ret);
b439b103 2979 return ret;
fcc85a4d
JK		 2980}
2981
e9750824
NJ		 2982#ifdef CONFIG_COMPAT
2983long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2984{
2985 switch (cmd) {
2986 case F2FS_IOC32_GETFLAGS:
2987 cmd = F2FS_IOC_GETFLAGS;
2988 break;
2989 case F2FS_IOC32_SETFLAGS:
2990 cmd = F2FS_IOC_SETFLAGS;
2991 break;
04ef4b62
CY		 2992 case F2FS_IOC32_GETVERSION:
2993 cmd = F2FS_IOC_GETVERSION;
2994 break;
2995 case F2FS_IOC_START_ATOMIC_WRITE:
2996 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2997 case F2FS_IOC_START_VOLATILE_WRITE:
2998 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2999 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3000 case F2FS_IOC_SHUTDOWN:
3001 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3002 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3003 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3004 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 3005 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 3006 case F2FS_IOC_WRITE_CHECKPOINT:
3007 case F2FS_IOC_DEFRAGMENT:
4dd6f977 3008 case F2FS_IOC_MOVE_RANGE:
e066b83c 3009 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 3010 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 3011 case F2FS_IOC_FSGETXATTR:
3012 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 3013 case F2FS_IOC_GET_PIN_FILE:
3014 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 3015 case F2FS_IOC_PRECACHE_EXTENTS:
4dd6f977 3016 break;
e9750824
NJ		 3017 default:
3018 return -ENOIOCTLCMD;
3019 }
3020 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3021}
3022#endif
3023
fbfa2cc5 3024const struct file_operations f2fs_file_operations = {
267378d4 3025 .llseek = f2fs_llseek,
aad4f8bb 3026 .read_iter = generic_file_read_iter,
fcc85a4d
JK		 3027 .write_iter = f2fs_file_write_iter,
3028 .open = f2fs_file_open,
12662234 3029 .release = f2fs_release_file,
fbfa2cc5 3030 .mmap = f2fs_file_mmap,
7a10f017 3031 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3032 .fsync = f2fs_sync_file,
3033 .fallocate = f2fs_fallocate,
3034 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3035#ifdef CONFIG_COMPAT
3036 .compat_ioctl = f2fs_compat_ioctl,
3037#endif
fbfa2cc5 3038 .splice_read = generic_file_splice_read,
8d020765 3039 .splice_write = iter_file_splice_write,
fbfa2cc5 3040};
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