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f2fs: don't change wbc->sync_mode
[linux-block.git] / fs / f2fs / file.c
CommitLineData
0a8165d7 1/*
fbfa2cc5
JK		 2 * fs/f2fs/file.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/fs.h>
12#include <linux/f2fs_fs.h>
13#include <linux/stat.h>
14#include <linux/buffer_head.h>
15#include <linux/writeback.h>
ae51fb31 16#include <linux/blkdev.h>
fbfa2cc5
JK		 17#include <linux/falloc.h>
18#include <linux/types.h>
e9750824 19#include <linux/compat.h>
fbfa2cc5
JK		 20#include <linux/uaccess.h>
21#include <linux/mount.h>
7f7670fe 22#include <linux/pagevec.h>
dc91de78 23#include <linux/uio.h>
8da4b8c4 24#include <linux/uuid.h>
4dd6f977 25#include <linux/file.h>
fbfa2cc5
JK		 26
27#include "f2fs.h"
28#include "node.h"
29#include "segment.h"
30#include "xattr.h"
31#include "acl.h"
c1c1b583 32#include "gc.h"
db9f7c1a 33#include "trace.h"
a2a4a7e4 34#include <trace/events/f2fs.h>
fbfa2cc5 35
ea4d479b 36static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
5a3a2d83
QS		 37{
38 struct inode *inode = file_inode(vmf->vma->vm_file);
ea4d479b 39 vm_fault_t ret;
5a3a2d83
QS		 40
41 down_read(&F2FS_I(inode)->i_mmap_sem);
ea4d479b 42 ret = filemap_fault(vmf);
5a3a2d83
QS		 43 up_read(&F2FS_I(inode)->i_mmap_sem);
44
ea4d479b 45 return ret;
5a3a2d83
QS		 46}
47
ea4d479b 48static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
fbfa2cc5
JK		 49{
50 struct page *page = vmf->page;
11bac800 51 struct inode *inode = file_inode(vmf->vma->vm_file);
4081363f 52 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5 53 struct dnode_of_data dn;
e479556b 54 int err;
fbfa2cc5 55
1f227a3e
JK		 56 if (unlikely(f2fs_cp_error(sbi))) {
57 err = -EIO;
58 goto err;
59 }
60
fbfa2cc5 61 sb_start_pagefault(inode->i_sb);
b3d208f9
JK		 62
63 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
b067ba1f 64
fbfa2cc5 65 /* block allocation */
e479556b 66 f2fs_lock_op(sbi);
b3d208f9 67 set_new_dnode(&dn, inode, NULL, NULL, 0);
b600965c 68 err = f2fs_reserve_block(&dn, page->index);
9ba69cf9
JK		 69 if (err) {
70 f2fs_unlock_op(sbi);
b600965c 71 goto out;
9ba69cf9
JK		 72 }
73 f2fs_put_dnode(&dn);
74 f2fs_unlock_op(sbi);
fbfa2cc5 75
2c4db1a6 76 f2fs_balance_fs(sbi, dn.node_changed);
2a340760 77
11bac800 78 file_update_time(vmf->vma->vm_file);
5a3a2d83 79 down_read(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5 80 lock_page(page);
6bacf52f 81 if (unlikely(page->mapping != inode->i_mapping ||
9851e6e1 82 page_offset(page) > i_size_read(inode) ||
6bacf52f 83 !PageUptodate(page))) {
fbfa2cc5
JK		 84 unlock_page(page);
85 err = -EFAULT;
5a3a2d83 86 goto out_sem;
fbfa2cc5
JK		 87 }
88
89 /*
90 * check to see if the page is mapped already (no holes)
91 */
92 if (PageMappedToDisk(page))
9851e6e1 93 goto mapped;
fbfa2cc5
JK		 94
95 /* page is wholly or partially inside EOF */
09cbfeaf 96 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
9edcdabf 97 i_size_read(inode)) {
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:
4d57b86d 277 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic);
c267ec15
JK		 278 if (ret)
279 goto out;
51455b19 280
871f599f 281 /* if cp_error was enabled, we should avoid infinite loop */
6d5a1495
CY		 282 if (unlikely(f2fs_cp_error(sbi))) {
283 ret = -EIO;
871f599f 284 goto out;
6d5a1495 285 }
871f599f 286
4d57b86d 287 if (f2fs_need_inode_block_update(sbi, ino)) {
7c45729a 288 f2fs_mark_inode_dirty_sync(inode, true);
51455b19
CL		 289 f2fs_write_inode(inode, NULL);
290 goto sync_nodes;
fbfa2cc5 291 }
51455b19 292
b6a245eb
JK		 293 /*
294 * If it's atomic_write, it's just fine to keep write ordering. So
295 * here we don't need to wait for node write completion, since we use
296 * node chain which serializes node blocks. If one of node writes are
297 * reordered, we can see simply broken chain, resulting in stopping
298 * roll-forward recovery. It means we'll recover all or none node blocks
299 * given fsync mark.
300 */
301 if (!atomic) {
4d57b86d 302 ret = f2fs_wait_on_node_pages_writeback(sbi, ino);
b6a245eb
JK		 303 if (ret)
304 goto out;
305 }
51455b19
CL		 306
307 /* once recovery info is written, don't need to tack this */
4d57b86d 308 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
91942321 309 clear_inode_flag(inode, FI_APPEND_WRITE);
51455b19 310flush_out:
d6290814 311 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
39d787be 312 ret = f2fs_issue_flush(sbi, inode->i_ino);
3f06252f 313 if (!ret) {
4d57b86d 314 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
3f06252f 315 clear_inode_flag(inode, FI_UPDATE_WRITE);
4d57b86d 316 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
3f06252f 317 }
d0239e1b 318 f2fs_update_time(sbi, REQ_TIME);
fbfa2cc5 319out:
a5fd5050 320 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
05ca3632 321 f2fs_trace_ios(NULL, 1);
fbfa2cc5
JK		 322 return ret;
323}
324
608514de
JK		 325int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
326{
1f227a3e
JK		 327 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
328 return -EIO;
608514de
JK		 329 return f2fs_do_sync_file(file, start, end, datasync, false);
330}
331
7f7670fe
JK		 332static pgoff_t __get_first_dirty_index(struct address_space *mapping,
333 pgoff_t pgofs, int whence)
334{
8faab642 335 struct page *page;
7f7670fe
JK		 336 int nr_pages;
337
338 if (whence != SEEK_DATA)
339 return 0;
340
341 /* find first dirty page index */
8faab642
JK		 342 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
343 1, &page);
344 if (!nr_pages)
345 return ULONG_MAX;
346 pgofs = page->index;
347 put_page(page);
7f7670fe
JK		 348 return pgofs;
349}
350
351static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
352 int whence)
353{
354 switch (whence) {
355 case SEEK_DATA:
356 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
7b525dd0 357 is_valid_blkaddr(blkaddr))
7f7670fe
JK		 358 return true;
359 break;
360 case SEEK_HOLE:
361 if (blkaddr == NULL_ADDR)
362 return true;
363 break;
364 }
365 return false;
366}
367
267378d4
CY		 368static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
369{
370 struct inode *inode = file->f_mapping->host;
371 loff_t maxbytes = inode->i_sb->s_maxbytes;
372 struct dnode_of_data dn;
7f7670fe
JK		 373 pgoff_t pgofs, end_offset, dirty;
374 loff_t data_ofs = offset;
375 loff_t isize;
267378d4
CY		 376 int err = 0;
377
5955102c 378 inode_lock(inode);
267378d4
CY		 379
380 isize = i_size_read(inode);
381 if (offset >= isize)
382 goto fail;
383
384 /* handle inline data case */
622f28ae 385 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
267378d4
CY		 386 if (whence == SEEK_HOLE)
387 data_ofs = isize;
388 goto found;
389 }
390
09cbfeaf 391 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
267378d4 392
7f7670fe
JK		 393 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
394
09cbfeaf 395 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 396 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 397 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
267378d4
CY		 398 if (err && err != -ENOENT) {
399 goto fail;
400 } else if (err == -ENOENT) {
e1c42045 401 /* direct node does not exists */
267378d4 402 if (whence == SEEK_DATA) {
4d57b86d 403 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
267378d4
CY		 404 continue;
405 } else {
406 goto found;
407 }
408 }
409
81ca7350 410 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
267378d4
CY		 411
412 /* find data/hole in dnode block */
413 for (; dn.ofs_in_node < end_offset;
414 dn.ofs_in_node++, pgofs++,
09cbfeaf 415 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
267378d4 416 block_t blkaddr;
f11e98bd 417
7a2af766
CY		 418 blkaddr = datablock_addr(dn.inode,
419 dn.node_page, dn.ofs_in_node);
267378d4 420
7f7670fe 421 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
267378d4
CY		 422 f2fs_put_dnode(&dn);
423 goto found;
424 }
425 }
426 f2fs_put_dnode(&dn);
427 }
428
429 if (whence == SEEK_DATA)
430 goto fail;
267378d4 431found:
fe369bc8
JK		 432 if (whence == SEEK_HOLE && data_ofs > isize)
433 data_ofs = isize;
5955102c 434 inode_unlock(inode);
267378d4
CY		 435 return vfs_setpos(file, data_ofs, maxbytes);
436fail:
5955102c 437 inode_unlock(inode);
267378d4
CY		 438 return -ENXIO;
439}
440
441static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
442{
443 struct inode *inode = file->f_mapping->host;
444 loff_t maxbytes = inode->i_sb->s_maxbytes;
445
446 switch (whence) {
447 case SEEK_SET:
448 case SEEK_CUR:
449 case SEEK_END:
450 return generic_file_llseek_size(file, offset, whence,
451 maxbytes, i_size_read(inode));
452 case SEEK_DATA:
453 case SEEK_HOLE:
0b4c5afd
JK		 454 if (offset < 0)
455 return -ENXIO;
267378d4
CY		 456 return f2fs_seek_block(file, offset, whence);
457 }
458
459 return -EINVAL;
460}
461
fbfa2cc5
JK		 462static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
463{
b3d208f9 464 struct inode *inode = file_inode(file);
b9d777b8 465 int err;
b3d208f9 466
1f227a3e
JK		 467 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
468 return -EIO;
469
b3d208f9 470 /* we don't need to use inline_data strictly */
b9d777b8
JK		 471 err = f2fs_convert_inline_inode(inode);
472 if (err)
473 return err;
b3d208f9 474
fbfa2cc5
JK		 475 file_accessed(file);
476 vma->vm_ops = &f2fs_file_vm_ops;
477 return 0;
478}
479
fcc85a4d
JK		 480static int f2fs_file_open(struct inode *inode, struct file *filp)
481{
2e168c82 482 int err = fscrypt_file_open(inode, filp);
fcc85a4d 483
2e168c82
EB		 484 if (err)
485 return err;
b91050a8
HL		 486
487 filp->f_mode |= FMODE_NOWAIT;
488
0abd675e 489 return dquot_file_open(inode, filp);
fcc85a4d
JK		 490}
491
4d57b86d 492void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
fbfa2cc5 493{
4081363f 494 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
fbfa2cc5 495 struct f2fs_node *raw_node;
19b2c30d 496 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
fbfa2cc5 497 __le32 *addr;
7a2af766
CY		 498 int base = 0;
499
500 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
501 base = get_extra_isize(dn->inode);
fbfa2cc5 502
45590710 503 raw_node = F2FS_NODE(dn->node_page);
7a2af766 504 addr = blkaddr_in_node(raw_node) + base + ofs;
fbfa2cc5 505
6c311ec6 506 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
fbfa2cc5 507 block_t blkaddr = le32_to_cpu(*addr);
f11e98bd 508
fbfa2cc5
JK		 509 if (blkaddr == NULL_ADDR)
510 continue;
511
e1509cf2 512 dn->data_blkaddr = NULL_ADDR;
4d57b86d
CY		 513 f2fs_set_data_blkaddr(dn);
514 f2fs_invalidate_blocks(sbi, blkaddr);
3c6c2beb 515 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
91942321 516 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
fbfa2cc5
JK		 517 nr_free++;
518 }
19b2c30d 519
fbfa2cc5 520 if (nr_free) {
19b2c30d
CY		 521 pgoff_t fofs;
522 /*
523 * once we invalidate valid blkaddr in range [ofs, ofs + count],
524 * we will invalidate all blkaddr in the whole range.
525 */
4d57b86d 526 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
81ca7350 527 dn->inode) + ofs;
19b2c30d 528 f2fs_update_extent_cache_range(dn, fofs, 0, len);
d7cc950b 529 dec_valid_block_count(sbi, dn->inode, nr_free);
fbfa2cc5
JK		 530 }
531 dn->ofs_in_node = ofs;
51dd6249 532
d0239e1b 533 f2fs_update_time(sbi, REQ_TIME);
51dd6249
NJ		 534 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
535 dn->ofs_in_node, nr_free);
fbfa2cc5
JK		 536}
537
4d57b86d 538void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
fbfa2cc5 539{
4d57b86d 540 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
fbfa2cc5
JK		 541}
542
0bfcfcca 543static int truncate_partial_data_page(struct inode *inode, u64 from,
43f3eae1 544 bool cache_only)
fbfa2cc5 545{
193bea1d 546 loff_t offset = from & (PAGE_SIZE - 1);
09cbfeaf 547 pgoff_t index = from >> PAGE_SHIFT;
43f3eae1 548 struct address_space *mapping = inode->i_mapping;
fbfa2cc5
JK		 549 struct page *page;
550
43f3eae1 551 if (!offset && !cache_only)
b3d208f9 552 return 0;
fbfa2cc5 553
43f3eae1 554 if (cache_only) {
34b5d5c2 555 page = find_lock_page(mapping, index);
43f3eae1
JK		 556 if (page && PageUptodate(page))
557 goto truncate_out;
558 f2fs_put_page(page, 1);
b3d208f9 559 return 0;
43f3eae1 560 }
fbfa2cc5 561
4d57b86d 562 page = f2fs_get_lock_data_page(inode, index, true);
43f3eae1 563 if (IS_ERR(page))
a78aaa2c 564 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
43f3eae1 565truncate_out:
fec1d657 566 f2fs_wait_on_page_writeback(page, DATA, true);
09cbfeaf 567 zero_user(page, offset, PAGE_SIZE - offset);
a9bcf9bc
JK		 568
569 /* An encrypted inode should have a key and truncate the last page. */
570 f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode));
571 if (!cache_only)
0bfcfcca 572 set_page_dirty(page);
fbfa2cc5 573 f2fs_put_page(page, 1);
b3d208f9 574 return 0;
fbfa2cc5
JK		 575}
576
4d57b86d 577int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
fbfa2cc5 578{
4081363f 579 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 580 struct dnode_of_data dn;
581 pgoff_t free_from;
9ffe0fb5 582 int count = 0, err = 0;
b3d208f9 583 struct page *ipage;
0bfcfcca 584 bool truncate_page = false;
fbfa2cc5 585
51dd6249
NJ		 586 trace_f2fs_truncate_blocks_enter(inode, from);
587
df033caf 588 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
fbfa2cc5 589
09210c97
CY		 590 if (free_from >= sbi->max_file_blocks)
591 goto free_partial;
592
764aa3e9
JK		 593 if (lock)
594 f2fs_lock_op(sbi);
9ffe0fb5 595
4d57b86d 596 ipage = f2fs_get_node_page(sbi, inode->i_ino);
b3d208f9
JK		 597 if (IS_ERR(ipage)) {
598 err = PTR_ERR(ipage);
599 goto out;
600 }
601
602 if (f2fs_has_inline_data(inode)) {
4d57b86d 603 f2fs_truncate_inline_inode(inode, ipage, from);
b3d208f9 604 f2fs_put_page(ipage, 1);
0bfcfcca 605 truncate_page = true;
b3d208f9
JK		 606 goto out;
607 }
608
609 set_new_dnode(&dn, inode, ipage, NULL, 0);
4d57b86d 610 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
fbfa2cc5
JK		 611 if (err) {
612 if (err == -ENOENT)
613 goto free_next;
b3d208f9 614 goto out;
1ce86bf6
JK		 615 }
616
81ca7350 617 count = ADDRS_PER_PAGE(dn.node_page, inode);
fbfa2cc5
JK		 618
619 count -= dn.ofs_in_node;
9850cf4a 620 f2fs_bug_on(sbi, count < 0);
39936837 621
fbfa2cc5 622 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
4d57b86d 623 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5
JK		 624 free_from += count;
625 }
626
627 f2fs_put_dnode(&dn);
628free_next:
4d57b86d 629 err = f2fs_truncate_inode_blocks(inode, free_from);
764d2c80
JK		 630out:
631 if (lock)
632 f2fs_unlock_op(sbi);
09210c97 633free_partial:
b3d208f9
JK		 634 /* lastly zero out the first data page */
635 if (!err)
0bfcfcca 636 err = truncate_partial_data_page(inode, from, truncate_page);
fbfa2cc5 637
51dd6249 638 trace_f2fs_truncate_blocks_exit(inode, err);
fbfa2cc5
JK		 639 return err;
640}
641
9a449e9c 642int f2fs_truncate(struct inode *inode)
fbfa2cc5 643{
b0154891
CY		 644 int err;
645
1f227a3e
JK		 646 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
647 return -EIO;
648
fbfa2cc5
JK		 649 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
650 S_ISLNK(inode->i_mode)))
b0154891 651 return 0;
fbfa2cc5 652
51dd6249
NJ		 653 trace_f2fs_truncate(inode);
654
14b44d23
JK		 655#ifdef CONFIG_F2FS_FAULT_INJECTION
656 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
657 f2fs_show_injection_info(FAULT_TRUNCATE);
658 return -EIO;
659 }
660#endif
92dffd01 661 /* we should check inline_data size */
b9d777b8 662 if (!f2fs_may_inline_data(inode)) {
b0154891
CY		 663 err = f2fs_convert_inline_inode(inode);
664 if (err)
665 return err;
92dffd01
JK		 666 }
667
4d57b86d 668 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
b0154891
CY		 669 if (err)
670 return err;
671
078cd827 672 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 673 f2fs_mark_inode_dirty_sync(inode, false);
b0154891 674 return 0;
fbfa2cc5
JK		 675}
676
a528d35e 677int f2fs_getattr(const struct path *path, struct kstat *stat,
1c6d8ee4 678 u32 request_mask, unsigned int query_flags)
fbfa2cc5 679{
a528d35e 680 struct inode *inode = d_inode(path->dentry);
1c6d8ee4 681 struct f2fs_inode_info *fi = F2FS_I(inode);
1c1d35df 682 struct f2fs_inode *ri;
1c6d8ee4
CY		 683 unsigned int flags;
684
1c1d35df
CY		 685 if (f2fs_has_extra_attr(inode) &&
686 f2fs_sb_has_inode_crtime(inode->i_sb) &&
687 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
688 stat->result_mask |= STATX_BTIME;
689 stat->btime.tv_sec = fi->i_crtime.tv_sec;
690 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
691 }
692
c807a7cb 693 flags = fi->i_flags & F2FS_FL_USER_VISIBLE;
59c84408 694 if (flags & F2FS_APPEND_FL)
1c6d8ee4 695 stat->attributes |= STATX_ATTR_APPEND;
59c84408 696 if (flags & F2FS_COMPR_FL)
1c6d8ee4
CY		 697 stat->attributes |= STATX_ATTR_COMPRESSED;
698 if (f2fs_encrypted_inode(inode))
699 stat->attributes |= STATX_ATTR_ENCRYPTED;
59c84408 700 if (flags & F2FS_IMMUTABLE_FL)
1c6d8ee4 701 stat->attributes |= STATX_ATTR_IMMUTABLE;
59c84408 702 if (flags & F2FS_NODUMP_FL)
1c6d8ee4
CY		 703 stat->attributes |= STATX_ATTR_NODUMP;
704
705 stat->attributes_mask |= (STATX_ATTR_APPEND |
706 STATX_ATTR_COMPRESSED |
707 STATX_ATTR_ENCRYPTED |
708 STATX_ATTR_IMMUTABLE |
709 STATX_ATTR_NODUMP);
710
fbfa2cc5 711 generic_fillattr(inode, stat);
5b4267d1
JK		 712
713 /* we need to show initial sectors used for inline_data/dentries */
714 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
715 f2fs_has_inline_dentry(inode))
716 stat->blocks += (stat->size + 511) >> 9;
717
fbfa2cc5
JK		 718 return 0;
719}
720
721#ifdef CONFIG_F2FS_FS_POSIX_ACL
722static void __setattr_copy(struct inode *inode, const struct iattr *attr)
723{
fbfa2cc5
JK		 724 unsigned int ia_valid = attr->ia_valid;
725
726 if (ia_valid & ATTR_UID)
727 inode->i_uid = attr->ia_uid;
728 if (ia_valid & ATTR_GID)
729 inode->i_gid = attr->ia_gid;
730 if (ia_valid & ATTR_ATIME)
731 inode->i_atime = timespec_trunc(attr->ia_atime,
732 inode->i_sb->s_time_gran);
733 if (ia_valid & ATTR_MTIME)
734 inode->i_mtime = timespec_trunc(attr->ia_mtime,
735 inode->i_sb->s_time_gran);
736 if (ia_valid & ATTR_CTIME)
737 inode->i_ctime = timespec_trunc(attr->ia_ctime,
738 inode->i_sb->s_time_gran);
739 if (ia_valid & ATTR_MODE) {
740 umode_t mode = attr->ia_mode;
741
742 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
743 mode &= ~S_ISGID;
91942321 744 set_acl_inode(inode, mode);
fbfa2cc5
JK		 745 }
746}
747#else
748#define __setattr_copy setattr_copy
749#endif
750
751int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
752{
2b0143b5 753 struct inode *inode = d_inode(dentry);
fbfa2cc5 754 int err;
c0ed4405 755 bool size_changed = false;
fbfa2cc5 756
1f227a3e
JK		 757 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
758 return -EIO;
759
31051c85 760 err = setattr_prepare(dentry, attr);
fbfa2cc5
JK		 761 if (err)
762 return err;
763
20bb2479
EB		 764 err = fscrypt_prepare_setattr(dentry, attr);
765 if (err)
766 return err;
767
0abd675e
CY		 768 if (is_quota_modification(inode, attr)) {
769 err = dquot_initialize(inode);
770 if (err)
771 return err;
772 }
773 if ((attr->ia_valid & ATTR_UID &&
774 !uid_eq(attr->ia_uid, inode->i_uid)) ||
775 (attr->ia_valid & ATTR_GID &&
776 !gid_eq(attr->ia_gid, inode->i_gid))) {
777 err = dquot_transfer(inode, attr);
778 if (err)
779 return err;
780 }
781
09db6a2e 782 if (attr->ia_valid & ATTR_SIZE) {
3c454145 783 if (attr->ia_size <= i_size_read(inode)) {
5a3a2d83 784 down_write(&F2FS_I(inode)->i_mmap_sem);
09db6a2e 785 truncate_setsize(inode, attr->ia_size);
9a449e9c 786 err = f2fs_truncate(inode);
5a3a2d83 787 up_write(&F2FS_I(inode)->i_mmap_sem);
b0154891
CY		 788 if (err)
789 return err;
09db6a2e
CY		 790 } else {
791 /*
3c454145
CY		 792 * do not trim all blocks after i_size if target size is
793 * larger than i_size.
09db6a2e 794 */
5a3a2d83 795 down_write(&F2FS_I(inode)->i_mmap_sem);
3c454145 796 truncate_setsize(inode, attr->ia_size);
5a3a2d83 797 up_write(&F2FS_I(inode)->i_mmap_sem);
0cab80ee
CY		 798
799 /* should convert inline inode here */
b9d777b8 800 if (!f2fs_may_inline_data(inode)) {
0cab80ee
CY		 801 err = f2fs_convert_inline_inode(inode);
802 if (err)
803 return err;
804 }
078cd827 805 inode->i_mtime = inode->i_ctime = current_time(inode);
09db6a2e 806 }
c0ed4405 807
a0d00fad
CY		 808 down_write(&F2FS_I(inode)->i_sem);
809 F2FS_I(inode)->last_disk_size = i_size_read(inode);
810 up_write(&F2FS_I(inode)->i_sem);
811
c0ed4405 812 size_changed = true;
fbfa2cc5
JK		 813 }
814
815 __setattr_copy(inode, attr);
816
817 if (attr->ia_valid & ATTR_MODE) {
4d57b86d 818 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
91942321
JK		 819 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
820 inode->i_mode = F2FS_I(inode)->i_acl_mode;
821 clear_inode_flag(inode, FI_ACL_MODE);
fbfa2cc5
JK		 822 }
823 }
824
c0ed4405
YH		 825 /* file size may changed here */
826 f2fs_mark_inode_dirty_sync(inode, size_changed);
15d04354
JK		 827
828 /* inode change will produce dirty node pages flushed by checkpoint */
829 f2fs_balance_fs(F2FS_I_SB(inode), true);
830
fbfa2cc5
JK		 831 return err;
832}
833
834const struct inode_operations f2fs_file_inode_operations = {
835 .getattr = f2fs_getattr,
836 .setattr = f2fs_setattr,
837 .get_acl = f2fs_get_acl,
a6dda0e6 838 .set_acl = f2fs_set_acl,
fbfa2cc5 839#ifdef CONFIG_F2FS_FS_XATTR
fbfa2cc5 840 .listxattr = f2fs_listxattr,
fbfa2cc5 841#endif
9ab70134 842 .fiemap = f2fs_fiemap,
fbfa2cc5
JK		 843};
844
6394328a 845static int fill_zero(struct inode *inode, pgoff_t index,
fbfa2cc5
JK		 846 loff_t start, loff_t len)
847{
4081363f 848 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
fbfa2cc5
JK		 849 struct page *page;
850
851 if (!len)
6394328a 852 return 0;
fbfa2cc5 853
2c4db1a6 854 f2fs_balance_fs(sbi, true);
bd43df02 855
e479556b 856 f2fs_lock_op(sbi);
4d57b86d 857 page = f2fs_get_new_data_page(inode, NULL, index, false);
e479556b 858 f2fs_unlock_op(sbi);
fbfa2cc5 859
6394328a
CY		 860 if (IS_ERR(page))
861 return PTR_ERR(page);
862
fec1d657 863 f2fs_wait_on_page_writeback(page, DATA, true);
6394328a
CY		 864 zero_user(page, start, len);
865 set_page_dirty(page);
866 f2fs_put_page(page, 1);
867 return 0;
fbfa2cc5
JK		 868}
869
4d57b86d 870int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
fbfa2cc5 871{
fbfa2cc5
JK		 872 int err;
873
ea58711e 874 while (pg_start < pg_end) {
fbfa2cc5 875 struct dnode_of_data dn;
ea58711e 876 pgoff_t end_offset, count;
9eaeba70 877
fbfa2cc5 878 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 879 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
fbfa2cc5 880 if (err) {
ea58711e 881 if (err == -ENOENT) {
4d57b86d
CY		 882 pg_start = f2fs_get_next_page_offset(&dn,
883 pg_start);
fbfa2cc5 884 continue;
ea58711e 885 }
fbfa2cc5
JK		 886 return err;
887 }
888
81ca7350 889 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
ea58711e
CY		 890 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
891
892 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
893
4d57b86d 894 f2fs_truncate_data_blocks_range(&dn, count);
fbfa2cc5 895 f2fs_put_dnode(&dn);
ea58711e
CY		 896
897 pg_start += count;
fbfa2cc5
JK		 898 }
899 return 0;
900}
901
a66c7b2f 902static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
fbfa2cc5
JK		 903{
904 pgoff_t pg_start, pg_end;
905 loff_t off_start, off_end;
b9d777b8 906 int ret;
fbfa2cc5 907
b9d777b8
JK		 908 ret = f2fs_convert_inline_inode(inode);
909 if (ret)
910 return ret;
9ffe0fb5 911
09cbfeaf
KS		 912 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
913 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
fbfa2cc5 914
09cbfeaf
KS		 915 off_start = offset & (PAGE_SIZE - 1);
916 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5
JK		 917
918 if (pg_start == pg_end) {
6394328a 919 ret = fill_zero(inode, pg_start, off_start,
fbfa2cc5 920 off_end - off_start);
6394328a
CY		 921 if (ret)
922 return ret;
fbfa2cc5 923 } else {
6394328a
CY		 924 if (off_start) {
925 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 926 PAGE_SIZE - off_start);
6394328a
CY		 927 if (ret)
928 return ret;
929 }
930 if (off_end) {
931 ret = fill_zero(inode, pg_end, 0, off_end);
932 if (ret)
933 return ret;
934 }
fbfa2cc5
JK		 935
936 if (pg_start < pg_end) {
937 struct address_space *mapping = inode->i_mapping;
938 loff_t blk_start, blk_end;
4081363f 939 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1127a3d4 940
2c4db1a6 941 f2fs_balance_fs(sbi, true);
fbfa2cc5 942
09cbfeaf
KS		 943 blk_start = (loff_t)pg_start << PAGE_SHIFT;
944 blk_end = (loff_t)pg_end << PAGE_SHIFT;
5a3a2d83 945 down_write(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 946 truncate_inode_pages_range(mapping, blk_start,
947 blk_end - 1);
39936837 948
e479556b 949 f2fs_lock_op(sbi);
4d57b86d 950 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
e479556b 951 f2fs_unlock_op(sbi);
5a3a2d83 952 up_write(&F2FS_I(inode)->i_mmap_sem);
fbfa2cc5
JK		 953 }
954 }
955
fbfa2cc5
JK		 956 return ret;
957}
958
0a2aa8fb
JK		 959static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
960 int *do_replace, pgoff_t off, pgoff_t len)
b4ace337
CY		 961{
962 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
963 struct dnode_of_data dn;
0a2aa8fb 964 int ret, done, i;
ecbaa406 965
0a2aa8fb 966next_dnode:
6e2c64ad 967 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 968 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
6e2c64ad
JK		 969 if (ret && ret != -ENOENT) {
970 return ret;
971 } else if (ret == -ENOENT) {
0a2aa8fb
JK		 972 if (dn.max_level == 0)
973 return -ENOENT;
974 done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len);
975 blkaddr += done;
976 do_replace += done;
977 goto next;
978 }
979
980 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
981 dn.ofs_in_node, len);
982 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
7a2af766
CY		 983 *blkaddr = datablock_addr(dn.inode,
984 dn.node_page, dn.ofs_in_node);
4d57b86d 985 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
0a2aa8fb
JK		 986
987 if (test_opt(sbi, LFS)) {
988 f2fs_put_dnode(&dn);
989 return -ENOTSUPP;
990 }
991
6e2c64ad 992 /* do not invalidate this block address */
f28b3434 993 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
0a2aa8fb 994 *do_replace = 1;
b4ace337 995 }
6e2c64ad 996 }
0a2aa8fb
JK		 997 f2fs_put_dnode(&dn);
998next:
999 len -= done;
1000 off += done;
1001 if (len)
1002 goto next_dnode;
1003 return 0;
1004}
b4ace337 1005
0a2aa8fb
JK		 1006static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1007 int *do_replace, pgoff_t off, int len)
1008{
1009 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1010 struct dnode_of_data dn;
1011 int ret, i;
b4ace337 1012
0a2aa8fb
JK		 1013 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1014 if (*do_replace == 0)
1015 continue;
b4ace337 1016
0a2aa8fb 1017 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1018 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
0a2aa8fb
JK		 1019 if (ret) {
1020 dec_valid_block_count(sbi, inode, 1);
4d57b86d 1021 f2fs_invalidate_blocks(sbi, *blkaddr);
0a2aa8fb
JK		 1022 } else {
1023 f2fs_update_data_blkaddr(&dn, *blkaddr);
36abef4e 1024 }
0a2aa8fb
JK		 1025 f2fs_put_dnode(&dn);
1026 }
1027 return 0;
1028}
1029
1030static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1031 block_t *blkaddr, int *do_replace,
1032 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1033{
1034 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1035 pgoff_t i = 0;
1036 int ret;
36abef4e 1037
0a2aa8fb
JK		 1038 while (i < len) {
1039 if (blkaddr[i] == NULL_ADDR && !full) {
1040 i++;
1041 continue;
6e2c64ad 1042 }
b4ace337 1043
0a2aa8fb
JK		 1044 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1045 struct dnode_of_data dn;
1046 struct node_info ni;
1047 size_t new_size;
1048 pgoff_t ilen;
b4ace337 1049
0a2aa8fb 1050 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
4d57b86d 1051 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
0a2aa8fb
JK		 1052 if (ret)
1053 return ret;
b4ace337 1054
4d57b86d 1055 f2fs_get_node_info(sbi, dn.nid, &ni);
0a2aa8fb
JK		 1056 ilen = min((pgoff_t)
1057 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1058 dn.ofs_in_node, len - i);
1059 do {
7a2af766
CY		 1060 dn.data_blkaddr = datablock_addr(dn.inode,
1061 dn.node_page, dn.ofs_in_node);
4d57b86d 1062 f2fs_truncate_data_blocks_range(&dn, 1);
0a2aa8fb
JK		 1063
1064 if (do_replace[i]) {
1065 f2fs_i_blocks_write(src_inode,
0abd675e 1066 1, false, false);
0a2aa8fb 1067 f2fs_i_blocks_write(dst_inode,
0abd675e 1068 1, true, false);
0a2aa8fb
JK		 1069 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1070 blkaddr[i], ni.version, true, false);
1071
1072 do_replace[i] = 0;
1073 }
1074 dn.ofs_in_node++;
1075 i++;
1076 new_size = (dst + i) << PAGE_SHIFT;
1077 if (dst_inode->i_size < new_size)
1078 f2fs_i_size_write(dst_inode, new_size);
e87f7329 1079 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
6e2c64ad 1080
0a2aa8fb
JK		 1081 f2fs_put_dnode(&dn);
1082 } else {
1083 struct page *psrc, *pdst;
1084
4d57b86d
CY		 1085 psrc = f2fs_get_lock_data_page(src_inode,
1086 src + i, true);
0a2aa8fb
JK		 1087 if (IS_ERR(psrc))
1088 return PTR_ERR(psrc);
4d57b86d 1089 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
0a2aa8fb
JK		 1090 true);
1091 if (IS_ERR(pdst)) {
1092 f2fs_put_page(psrc, 1);
1093 return PTR_ERR(pdst);
1094 }
1095 f2fs_copy_page(psrc, pdst);
1096 set_page_dirty(pdst);
1097 f2fs_put_page(pdst, 1);
6e2c64ad 1098 f2fs_put_page(psrc, 1);
b4ace337 1099
4d57b86d
CY		 1100 ret = f2fs_truncate_hole(src_inode,
1101 src + i, src + i + 1);
0a2aa8fb
JK		 1102 if (ret)
1103 return ret;
1104 i++;
1105 }
6e2c64ad
JK		 1106 }
1107 return 0;
0a2aa8fb 1108}
b4ace337 1109
0a2aa8fb
JK		 1110static int __exchange_data_block(struct inode *src_inode,
1111 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
363cad7f 1112 pgoff_t len, bool full)
0a2aa8fb
JK		 1113{
1114 block_t *src_blkaddr;
1115 int *do_replace;
363cad7f 1116 pgoff_t olen;
0a2aa8fb
JK		 1117 int ret;
1118
363cad7f
JK		 1119 while (len) {
1120 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len);
0a2aa8fb 1121
628b3d14
CY		 1122 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1123 sizeof(block_t) * olen, GFP_KERNEL);
363cad7f
JK		 1124 if (!src_blkaddr)
1125 return -ENOMEM;
0a2aa8fb 1126
628b3d14
CY		 1127 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1128 sizeof(int) * olen, GFP_KERNEL);
363cad7f
JK		 1129 if (!do_replace) {
1130 kvfree(src_blkaddr);
1131 return -ENOMEM;
1132 }
0a2aa8fb 1133
363cad7f
JK		 1134 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1135 do_replace, src, olen);
1136 if (ret)
1137 goto roll_back;
0a2aa8fb 1138
363cad7f
JK		 1139 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1140 do_replace, src, dst, olen, full);
1141 if (ret)
1142 goto roll_back;
1143
1144 src += olen;
1145 dst += olen;
1146 len -= olen;
1147
1148 kvfree(src_blkaddr);
1149 kvfree(do_replace);
1150 }
0a2aa8fb
JK		 1151 return 0;
1152
1153roll_back:
9fd62605 1154 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
0a2aa8fb
JK		 1155 kvfree(src_blkaddr);
1156 kvfree(do_replace);
6e2c64ad
JK		 1157 return ret;
1158}
b4ace337 1159
6e2c64ad
JK		 1160static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
1161{
1162 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1163 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
0a2aa8fb 1164 int ret;
6e2c64ad 1165
0a2aa8fb
JK		 1166 f2fs_balance_fs(sbi, true);
1167 f2fs_lock_op(sbi);
5f281fab
JK		 1168
1169 f2fs_drop_extent_tree(inode);
1170
0a2aa8fb
JK		 1171 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1172 f2fs_unlock_op(sbi);
b4ace337
CY		 1173 return ret;
1174}
1175
1176static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1177{
1178 pgoff_t pg_start, pg_end;
1179 loff_t new_size;
1180 int ret;
1181
b4ace337
CY		 1182 if (offset + len >= i_size_read(inode))
1183 return -EINVAL;
1184
1185 /* collapse range should be aligned to block size of f2fs. */
1186 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1187 return -EINVAL;
1188
b9d777b8
JK		 1189 ret = f2fs_convert_inline_inode(inode);
1190 if (ret)
1191 return ret;
97a7b2c2 1192
09cbfeaf
KS		 1193 pg_start = offset >> PAGE_SHIFT;
1194 pg_end = (offset + len) >> PAGE_SHIFT;
b4ace337 1195
21020812 1196 /* avoid gc operation during block exchange */
b2532c69 1197 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
21020812 1198
5a3a2d83 1199 down_write(&F2FS_I(inode)->i_mmap_sem);
b4ace337
CY		 1200 /* write out all dirty pages from offset */
1201 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1202 if (ret)
21020812 1203 goto out_unlock;
bb06664a 1204
b4ace337
CY		 1205 truncate_pagecache(inode, offset);
1206
1207 ret = f2fs_do_collapse(inode, pg_start, pg_end);
1208 if (ret)
bb06664a 1209 goto out_unlock;
b4ace337 1210
6e2c64ad
JK		 1211 /* write out all moved pages, if possible */
1212 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1213 truncate_pagecache(inode, offset);
1214
b4ace337 1215 new_size = i_size_read(inode) - len;
6e2c64ad 1216 truncate_pagecache(inode, new_size);
b4ace337 1217
4d57b86d 1218 ret = f2fs_truncate_blocks(inode, new_size, true);
b4ace337 1219 if (!ret)
fc9581c8 1220 f2fs_i_size_write(inode, new_size);
bb06664a 1221out_unlock:
5a3a2d83 1222 up_write(&F2FS_I(inode)->i_mmap_sem);
b2532c69 1223 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
b4ace337
CY		 1224 return ret;
1225}
1226
6e961949
CY		 1227static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1228 pgoff_t end)
1229{
1230 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1231 pgoff_t index = start;
1232 unsigned int ofs_in_node = dn->ofs_in_node;
1233 blkcnt_t count = 0;
1234 int ret;
1235
1236 for (; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1237 if (datablock_addr(dn->inode, dn->node_page,
1238 dn->ofs_in_node) == NULL_ADDR)
6e961949
CY		 1239 count++;
1240 }
1241
1242 dn->ofs_in_node = ofs_in_node;
4d57b86d 1243 ret = f2fs_reserve_new_blocks(dn, count);
6e961949
CY		 1244 if (ret)
1245 return ret;
1246
1247 dn->ofs_in_node = ofs_in_node;
1248 for (index = start; index < end; index++, dn->ofs_in_node++) {
7a2af766
CY		 1249 dn->data_blkaddr = datablock_addr(dn->inode,
1250 dn->node_page, dn->ofs_in_node);
6e961949 1251 /*
4d57b86d 1252 * f2fs_reserve_new_blocks will not guarantee entire block
6e961949
CY		 1253 * allocation.
1254 */
1255 if (dn->data_blkaddr == NULL_ADDR) {
1256 ret = -ENOSPC;
1257 break;
1258 }
1259 if (dn->data_blkaddr != NEW_ADDR) {
4d57b86d 1260 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
6e961949 1261 dn->data_blkaddr = NEW_ADDR;
4d57b86d 1262 f2fs_set_data_blkaddr(dn);
6e961949
CY		 1263 }
1264 }
1265
1266 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1267
1268 return ret;
1269}
1270
75cd4e09
CY		 1271static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1272 int mode)
1273{
1274 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1275 struct address_space *mapping = inode->i_mapping;
1276 pgoff_t index, pg_start, pg_end;
1277 loff_t new_size = i_size_read(inode);
1278 loff_t off_start, off_end;
1279 int ret = 0;
1280
75cd4e09
CY		 1281 ret = inode_newsize_ok(inode, (len + offset));
1282 if (ret)
1283 return ret;
1284
b9d777b8
JK		 1285 ret = f2fs_convert_inline_inode(inode);
1286 if (ret)
1287 return ret;
75cd4e09 1288
5a3a2d83 1289 down_write(&F2FS_I(inode)->i_mmap_sem);
75cd4e09
CY		 1290 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1291 if (ret)
5a3a2d83 1292 goto out_sem;
75cd4e09
CY		 1293
1294 truncate_pagecache_range(inode, offset, offset + len - 1);
1295
09cbfeaf
KS		 1296 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1297 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
75cd4e09 1298
09cbfeaf
KS		 1299 off_start = offset & (PAGE_SIZE - 1);
1300 off_end = (offset + len) & (PAGE_SIZE - 1);
75cd4e09
CY		 1301
1302 if (pg_start == pg_end) {
6394328a
CY		 1303 ret = fill_zero(inode, pg_start, off_start,
1304 off_end - off_start);
1305 if (ret)
5a3a2d83 1306 goto out_sem;
6394328a 1307
75cd4e09
CY		 1308 new_size = max_t(loff_t, new_size, offset + len);
1309 } else {
1310 if (off_start) {
6394328a 1311 ret = fill_zero(inode, pg_start++, off_start,
09cbfeaf 1312 PAGE_SIZE - off_start);
6394328a 1313 if (ret)
5a3a2d83 1314 goto out_sem;
6394328a 1315
75cd4e09 1316 new_size = max_t(loff_t, new_size,
09cbfeaf 1317 (loff_t)pg_start << PAGE_SHIFT);
75cd4e09
CY		 1318 }
1319
6e961949 1320 for (index = pg_start; index < pg_end;) {
75cd4e09 1321 struct dnode_of_data dn;
6e961949
CY		 1322 unsigned int end_offset;
1323 pgoff_t end;
75cd4e09
CY		 1324
1325 f2fs_lock_op(sbi);
1326
6e961949 1327 set_new_dnode(&dn, inode, NULL, NULL, 0);
4d57b86d 1328 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
75cd4e09
CY		 1329 if (ret) {
1330 f2fs_unlock_op(sbi);
1331 goto out;
1332 }
1333
6e961949
CY		 1334 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1335 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1336
1337 ret = f2fs_do_zero_range(&dn, index, end);
75cd4e09
CY		 1338 f2fs_put_dnode(&dn);
1339 f2fs_unlock_op(sbi);
9434fcde
CY		 1340
1341 f2fs_balance_fs(sbi, dn.node_changed);
1342
6e961949
CY		 1343 if (ret)
1344 goto out;
75cd4e09 1345
6e961949 1346 index = end;
75cd4e09 1347 new_size = max_t(loff_t, new_size,
6e961949 1348 (loff_t)index << PAGE_SHIFT);
75cd4e09
CY		 1349 }
1350
1351 if (off_end) {
6394328a
CY		 1352 ret = fill_zero(inode, pg_end, 0, off_end);
1353 if (ret)
1354 goto out;
1355
75cd4e09
CY		 1356 new_size = max_t(loff_t, new_size, offset + len);
1357 }
1358 }
1359
1360out:
17cd07ae
CY		 1361 if (new_size > i_size_read(inode)) {
1362 if (mode & FALLOC_FL_KEEP_SIZE)
1363 file_set_keep_isize(inode);
1364 else
1365 f2fs_i_size_write(inode, new_size);
1366 }
5a3a2d83
QS		 1367out_sem:
1368 up_write(&F2FS_I(inode)->i_mmap_sem);
75cd4e09
CY		 1369
1370 return ret;
1371}
1372
f62185d0
CY		 1373static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1374{
1375 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
0a2aa8fb 1376 pgoff_t nr, pg_start, pg_end, delta, idx;
f62185d0 1377 loff_t new_size;
6e2c64ad 1378 int ret = 0;
f62185d0 1379
f62185d0 1380 new_size = i_size_read(inode) + len;
46e82fb1
KM		 1381 ret = inode_newsize_ok(inode, new_size);
1382 if (ret)
1383 return ret;
f62185d0
CY		 1384
1385 if (offset >= i_size_read(inode))
1386 return -EINVAL;
1387
1388 /* insert range should be aligned to block size of f2fs. */
1389 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1390 return -EINVAL;
1391
b9d777b8
JK		 1392 ret = f2fs_convert_inline_inode(inode);
1393 if (ret)
1394 return ret;
97a7b2c2 1395
2c4db1a6 1396 f2fs_balance_fs(sbi, true);
2a340760 1397
21020812 1398 /* avoid gc operation during block exchange */
b2532c69 1399 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
21020812 1400
5a3a2d83 1401 down_write(&F2FS_I(inode)->i_mmap_sem);
4d57b86d 1402 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
f62185d0 1403 if (ret)
5a3a2d83 1404 goto out;
f62185d0
CY		 1405
1406 /* write out all dirty pages from offset */
1407 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1408 if (ret)
5a3a2d83 1409 goto out;
f62185d0
CY		 1410
1411 truncate_pagecache(inode, offset);
1412
09cbfeaf
KS		 1413 pg_start = offset >> PAGE_SHIFT;
1414 pg_end = (offset + len) >> PAGE_SHIFT;
f62185d0 1415 delta = pg_end - pg_start;
0a2aa8fb
JK		 1416 idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1417
1418 while (!ret && idx > pg_start) {
1419 nr = idx - pg_start;
1420 if (nr > delta)
1421 nr = delta;
1422 idx -= nr;
f62185d0 1423
f62185d0 1424 f2fs_lock_op(sbi);
5f281fab
JK		 1425 f2fs_drop_extent_tree(inode);
1426
0a2aa8fb
JK		 1427 ret = __exchange_data_block(inode, inode, idx,
1428 idx + delta, nr, false);
f62185d0
CY		 1429 f2fs_unlock_op(sbi);
1430 }
1431
6e2c64ad
JK		 1432 /* write out all moved pages, if possible */
1433 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1434 truncate_pagecache(inode, offset);
1435
1436 if (!ret)
fc9581c8 1437 f2fs_i_size_write(inode, new_size);
5a3a2d83
QS		 1438out:
1439 up_write(&F2FS_I(inode)->i_mmap_sem);
b2532c69 1440 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
f62185d0
CY		 1441 return ret;
1442}
1443
fbfa2cc5
JK		 1444static int expand_inode_data(struct inode *inode, loff_t offset,
1445 loff_t len, int mode)
1446{
4081363f 1447 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d5097be5 1448 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
c4020b2d 1449 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE };
e12dd7bd 1450 pgoff_t pg_end;
fbfa2cc5 1451 loff_t new_size = i_size_read(inode);
e12dd7bd 1452 loff_t off_end;
a7de6086 1453 int err;
fbfa2cc5 1454
a7de6086
JK		 1455 err = inode_newsize_ok(inode, (len + offset));
1456 if (err)
1457 return err;
fbfa2cc5 1458
a7de6086
JK		 1459 err = f2fs_convert_inline_inode(inode);
1460 if (err)
1461 return err;
9e09fc85 1462
2c4db1a6 1463 f2fs_balance_fs(sbi, true);
2a340760 1464
e12dd7bd 1465 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
09cbfeaf 1466 off_end = (offset + len) & (PAGE_SIZE - 1);
fbfa2cc5 1467
e12dd7bd
JK		 1468 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1469 map.m_len = pg_end - map.m_lblk;
1470 if (off_end)
1471 map.m_len++;
ead43275 1472
a7de6086
JK		 1473 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1474 if (err) {
e12dd7bd 1475 pgoff_t last_off;
fbfa2cc5 1476
e12dd7bd 1477 if (!map.m_len)
a7de6086 1478 return err;
98397ff3 1479
e12dd7bd
JK		 1480 last_off = map.m_lblk + map.m_len - 1;
1481
1482 /* update new size to the failed position */
1061fd48 1483 new_size = (last_off == pg_end) ? offset + len :
e12dd7bd
JK		 1484 (loff_t)(last_off + 1) << PAGE_SHIFT;
1485 } else {
1486 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
fbfa2cc5
JK		 1487 }
1488
e8ed90a6
CY		 1489 if (new_size > i_size_read(inode)) {
1490 if (mode & FALLOC_FL_KEEP_SIZE)
1491 file_set_keep_isize(inode);
1492 else
1493 f2fs_i_size_write(inode, new_size);
1494 }
fbfa2cc5 1495
a7de6086 1496 return err;
fbfa2cc5
JK		 1497}
1498
1499static long f2fs_fallocate(struct file *file, int mode,
1500 loff_t offset, loff_t len)
1501{
6131ffaa 1502 struct inode *inode = file_inode(file);
587c0a42 1503 long ret = 0;
fbfa2cc5 1504
1f227a3e
JK		 1505 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1506 return -EIO;
1507
c998012b
CY		 1508 /* f2fs only support ->fallocate for regular file */
1509 if (!S_ISREG(inode->i_mode))
1510 return -EINVAL;
1511
f62185d0
CY		 1512 if (f2fs_encrypted_inode(inode) &&
1513 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
fcc85a4d
JK		 1514 return -EOPNOTSUPP;
1515
b4ace337 1516 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
f62185d0
CY		 1517 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1518 FALLOC_FL_INSERT_RANGE))
fbfa2cc5
JK		 1519 return -EOPNOTSUPP;
1520
5955102c 1521 inode_lock(inode);
3375f696 1522
587c0a42
TY		 1523 if (mode & FALLOC_FL_PUNCH_HOLE) {
1524 if (offset >= inode->i_size)
1525 goto out;
1526
a66c7b2f 1527 ret = punch_hole(inode, offset, len);
b4ace337
CY		 1528 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1529 ret = f2fs_collapse_range(inode, offset, len);
75cd4e09
CY		 1530 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1531 ret = f2fs_zero_range(inode, offset, len, mode);
f62185d0
CY		 1532 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1533 ret = f2fs_insert_range(inode, offset, len);
b4ace337 1534 } else {
fbfa2cc5 1535 ret = expand_inode_data(inode, offset, len, mode);
b4ace337 1536 }
fbfa2cc5 1537
3af60a49 1538 if (!ret) {
078cd827 1539 inode->i_mtime = inode->i_ctime = current_time(inode);
7c45729a 1540 f2fs_mark_inode_dirty_sync(inode, false);
d0239e1b 1541 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3af60a49 1542 }
3375f696 1543
587c0a42 1544out:
5955102c 1545 inode_unlock(inode);
3375f696 1546
c01e2853 1547 trace_f2fs_fallocate(inode, mode, offset, len, ret);
fbfa2cc5
JK		 1548 return ret;
1549}
1550
1e84371f
JK		 1551static int f2fs_release_file(struct inode *inode, struct file *filp)
1552{
de5307e4
JK		 1553 /*
1554 * f2fs_relase_file is called at every close calls. So we should
1555 * not drop any inmemory pages by close called by other process.
1556 */
1557 if (!(filp->f_mode & FMODE_WRITE) ||
1558 atomic_read(&inode->i_writecount) != 1)
1559 return 0;
1560
1e84371f
JK		 1561 /* some remained atomic pages should discarded */
1562 if (f2fs_is_atomic_file(inode))
4d57b86d 1563 f2fs_drop_inmem_pages(inode);
1e84371f 1564 if (f2fs_is_volatile_file(inode)) {
91942321 1565 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 1566 stat_dec_volatile_write(inode);
91942321 1567 set_inode_flag(inode, FI_DROP_CACHE);
1e84371f 1568 filemap_fdatawrite(inode->i_mapping);
91942321 1569 clear_inode_flag(inode, FI_DROP_CACHE);
1e84371f
JK		 1570 }
1571 return 0;
1572}
1573
7a10f017 1574static int f2fs_file_flush(struct file *file, fl_owner_t id)
fbfa2cc5 1575{
7a10f017
JK		 1576 struct inode *inode = file_inode(file);
1577
1578 /*
1579 * If the process doing a transaction is crashed, we should do
1580 * roll-back. Otherwise, other reader/write can see corrupted database
1581 * until all the writers close its file. Since this should be done
1582 * before dropping file lock, it needs to do in ->flush.
1583 */
1584 if (f2fs_is_atomic_file(inode) &&
1585 F2FS_I(inode)->inmem_task == current)
4d57b86d 1586 f2fs_drop_inmem_pages(inode);
7a10f017 1587 return 0;
fbfa2cc5
JK		 1588}
1589
52656e6c 1590static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
fbfa2cc5 1591{
6131ffaa 1592 struct inode *inode = file_inode(filp);
fbfa2cc5 1593 struct f2fs_inode_info *fi = F2FS_I(inode);
76481158
CY		 1594 unsigned int flags = fi->i_flags;
1595
1596 if (file_is_encrypt(inode))
1597 flags |= F2FS_ENCRYPT_FL;
1598 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1599 flags |= F2FS_INLINE_DATA_FL;
1600
1601 flags &= F2FS_FL_USER_VISIBLE;
1602
52656e6c
JK		 1603 return put_user(flags, (int __user *)arg);
1604}
fbfa2cc5 1605
2c1d0305
CY		 1606static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags)
1607{
1608 struct f2fs_inode_info *fi = F2FS_I(inode);
1609 unsigned int oldflags;
1610
1611 /* Is it quota file? Do not allow user to mess with it */
1612 if (IS_NOQUOTA(inode))
1613 return -EPERM;
1614
1615 flags = f2fs_mask_flags(inode->i_mode, flags);
1616
1617 oldflags = fi->i_flags;
1618
59c84408 1619 if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL))
2c1d0305
CY		 1620 if (!capable(CAP_LINUX_IMMUTABLE))
1621 return -EPERM;
1622
c807a7cb
CY		 1623 flags = flags & F2FS_FL_USER_MODIFIABLE;
1624 flags |= oldflags & ~F2FS_FL_USER_MODIFIABLE;
2c1d0305
CY		 1625 fi->i_flags = flags;
1626
59c84408 1627 if (fi->i_flags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 1628 set_inode_flag(inode, FI_PROJ_INHERIT);
1629 else
1630 clear_inode_flag(inode, FI_PROJ_INHERIT);
1631
1632 inode->i_ctime = current_time(inode);
1633 f2fs_set_inode_flags(inode);
1634 f2fs_mark_inode_dirty_sync(inode, false);
1635 return 0;
1636}
1637
52656e6c
JK		 1638static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1639{
1640 struct inode *inode = file_inode(filp);
69494229 1641 unsigned int flags;
52656e6c 1642 int ret;
fbfa2cc5 1643
7fb17fe4
CY		 1644 if (!inode_owner_or_capable(inode))
1645 return -EACCES;
1646
1647 if (get_user(flags, (int __user *)arg))
1648 return -EFAULT;
1649
52656e6c
JK		 1650 ret = mnt_want_write_file(filp);
1651 if (ret)
1652 return ret;
fbfa2cc5 1653
5955102c 1654 inode_lock(inode);
fbfa2cc5 1655
2c1d0305 1656 ret = __f2fs_ioc_setflags(inode, flags);
fbfa2cc5 1657
a72d4b97 1658 inode_unlock(inode);
52656e6c
JK		 1659 mnt_drop_write_file(filp);
1660 return ret;
1661}
4b2fecc8 1662
d49f3e89
CY		 1663static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1664{
1665 struct inode *inode = file_inode(filp);
1666
1667 return put_user(inode->i_generation, (int __user *)arg);
1668}
1669
88b88a66
JK		 1670static int f2fs_ioc_start_atomic_write(struct file *filp)
1671{
1672 struct inode *inode = file_inode(filp);
f4c9c743 1673 int ret;
88b88a66
JK		 1674
1675 if (!inode_owner_or_capable(inode))
1676 return -EACCES;
1677
e811898c
JK		 1678 if (!S_ISREG(inode->i_mode))
1679 return -EINVAL;
1680
7fb17fe4
CY		 1681 ret = mnt_want_write_file(filp);
1682 if (ret)
1683 return ret;
1684
0fac558b
CY		 1685 inode_lock(inode);
1686
b2532c69 1687 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
27319ba4 1688
1e84371f 1689 if (f2fs_is_atomic_file(inode))
7fb17fe4 1690 goto out;
88b88a66 1691
f4c9c743
CY		 1692 ret = f2fs_convert_inline_inode(inode);
1693 if (ret)
7fb17fe4 1694 goto out;
88b88a66 1695
c27753d6 1696 if (!get_dirty_pages(inode))
054afda9 1697 goto skip_flush;
c27753d6
JK		 1698
1699 f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
204706c7 1700 "Unexpected flush for atomic writes: ino=%lu, npages=%u",
c27753d6
JK		 1701 inode->i_ino, get_dirty_pages(inode));
1702 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
054afda9 1703 if (ret)
684ca7e5 1704 goto out;
054afda9 1705skip_flush:
054afda9 1706 set_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1707 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
054afda9 1708 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
684ca7e5 1709
7a10f017 1710 F2FS_I(inode)->inmem_task = current;
26a28a0c
JK		 1711 stat_inc_atomic_write(inode);
1712 stat_update_max_atomic_write(inode);
684ca7e5 1713out:
b2532c69 1714 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
0fac558b 1715 inode_unlock(inode);
7fb17fe4 1716 mnt_drop_write_file(filp);
c27753d6 1717 return ret;
88b88a66
JK		 1718}
1719
1720static int f2fs_ioc_commit_atomic_write(struct file *filp)
1721{
1722 struct inode *inode = file_inode(filp);
1723 int ret;
1724
1725 if (!inode_owner_or_capable(inode))
1726 return -EACCES;
1727
1728 ret = mnt_want_write_file(filp);
1729 if (ret)
1730 return ret;
1731
0fac558b
CY		 1732 inode_lock(inode);
1733
b2532c69 1734 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1dc0f899 1735
b169c3c5
CY		 1736 if (f2fs_is_volatile_file(inode)) {
1737 ret = -EINVAL;
7fb17fe4 1738 goto err_out;
b169c3c5 1739 }
7fb17fe4 1740
6282adbf 1741 if (f2fs_is_atomic_file(inode)) {
4d57b86d 1742 ret = f2fs_commit_inmem_pages(inode);
5fe45743 1743 if (ret)
edb27dee 1744 goto err_out;
5fe45743 1745
26a28a0c 1746 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
5fe45743
CY		 1747 if (!ret) {
1748 clear_inode_flag(inode, FI_ATOMIC_FILE);
2ef79ecb 1749 F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0;
5fe45743 1750 stat_dec_atomic_write(inode);
447135a8 1751 }
26a28a0c 1752 } else {
774e1b78 1753 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
6282adbf 1754 }
edb27dee 1755err_out:
2ef79ecb
CY		 1756 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
1757 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1758 ret = -EINVAL;
1759 }
b2532c69 1760 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
0fac558b 1761 inode_unlock(inode);
88b88a66
JK		 1762 mnt_drop_write_file(filp);
1763 return ret;
1764}
1765
02a1335f
JK		 1766static int f2fs_ioc_start_volatile_write(struct file *filp)
1767{
1768 struct inode *inode = file_inode(filp);
f4c9c743 1769 int ret;
02a1335f
JK		 1770
1771 if (!inode_owner_or_capable(inode))
1772 return -EACCES;
1773
8ff0971f
CY		 1774 if (!S_ISREG(inode->i_mode))
1775 return -EINVAL;
1776
7fb17fe4
CY		 1777 ret = mnt_want_write_file(filp);
1778 if (ret)
1779 return ret;
1780
0fac558b
CY		 1781 inode_lock(inode);
1782
1e84371f 1783 if (f2fs_is_volatile_file(inode))
7fb17fe4 1784 goto out;
1e84371f 1785
f4c9c743
CY		 1786 ret = f2fs_convert_inline_inode(inode);
1787 if (ret)
7fb17fe4 1788 goto out;
b3d208f9 1789
648d50ba
CY		 1790 stat_inc_volatile_write(inode);
1791 stat_update_max_volatile_write(inode);
1792
91942321 1793 set_inode_flag(inode, FI_VOLATILE_FILE);
d0239e1b 1794 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1795out:
0fac558b 1796 inode_unlock(inode);
7fb17fe4
CY		 1797 mnt_drop_write_file(filp);
1798 return ret;
02a1335f
JK		 1799}
1800
1e84371f
JK		 1801static int f2fs_ioc_release_volatile_write(struct file *filp)
1802{
1803 struct inode *inode = file_inode(filp);
7fb17fe4 1804 int ret;
1e84371f
JK		 1805
1806 if (!inode_owner_or_capable(inode))
1807 return -EACCES;
1808
7fb17fe4
CY		 1809 ret = mnt_want_write_file(filp);
1810 if (ret)
1811 return ret;
1812
0fac558b
CY		 1813 inode_lock(inode);
1814
1e84371f 1815 if (!f2fs_is_volatile_file(inode))
7fb17fe4 1816 goto out;
1e84371f 1817
7fb17fe4
CY		 1818 if (!f2fs_is_first_block_written(inode)) {
1819 ret = truncate_partial_data_page(inode, 0, true);
1820 goto out;
1821 }
3c6c2beb 1822
7fb17fe4
CY		 1823 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1824out:
0fac558b 1825 inode_unlock(inode);
7fb17fe4
CY		 1826 mnt_drop_write_file(filp);
1827 return ret;
1e84371f
JK		 1828}
1829
1830static int f2fs_ioc_abort_volatile_write(struct file *filp)
1831{
1832 struct inode *inode = file_inode(filp);
1833 int ret;
1834
1835 if (!inode_owner_or_capable(inode))
1836 return -EACCES;
1837
1838 ret = mnt_want_write_file(filp);
1839 if (ret)
1840 return ret;
1841
0fac558b
CY		 1842 inode_lock(inode);
1843
26dc3d44 1844 if (f2fs_is_atomic_file(inode))
4d57b86d 1845 f2fs_drop_inmem_pages(inode);
732d5648 1846 if (f2fs_is_volatile_file(inode)) {
91942321 1847 clear_inode_flag(inode, FI_VOLATILE_FILE);
648d50ba 1848 stat_dec_volatile_write(inode);
608514de 1849 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
732d5648 1850 }
de6a8ec9 1851
0fac558b
CY		 1852 inode_unlock(inode);
1853
1e84371f 1854 mnt_drop_write_file(filp);
d0239e1b 1855 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1e84371f
JK		 1856 return ret;
1857}
1858
1abff93d
JK		 1859static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1860{
1861 struct inode *inode = file_inode(filp);
1862 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1863 struct super_block *sb = sbi->sb;
1864 __u32 in;
7fb17fe4 1865 int ret;
1abff93d
JK		 1866
1867 if (!capable(CAP_SYS_ADMIN))
1868 return -EPERM;
1869
1870 if (get_user(in, (__u32 __user *)arg))
1871 return -EFAULT;
1872
60b2b4ee
ST		 1873 if (in != F2FS_GOING_DOWN_FULLSYNC) {
1874 ret = mnt_want_write_file(filp);
1875 if (ret)
1876 return ret;
1877 }
7fb17fe4 1878
1abff93d
JK		 1879 switch (in) {
1880 case F2FS_GOING_DOWN_FULLSYNC:
1881 sb = freeze_bdev(sb->s_bdev);
d027c484
CY		 1882 if (IS_ERR(sb)) {
1883 ret = PTR_ERR(sb);
1884 goto out;
1885 }
1886 if (sb) {
38f91ca8 1887 f2fs_stop_checkpoint(sbi, false);
1abff93d
JK		 1888 thaw_bdev(sb->s_bdev, sb);
1889 }
1890 break;
1891 case F2FS_GOING_DOWN_METASYNC:
1892 /* do checkpoint only */
d027c484
CY		 1893 ret = f2fs_sync_fs(sb, 1);
1894 if (ret)
1895 goto out;
38f91ca8 1896 f2fs_stop_checkpoint(sbi, false);
1abff93d
JK		 1897 break;
1898 case F2FS_GOING_DOWN_NOSYNC:
38f91ca8 1899 f2fs_stop_checkpoint(sbi, false);
1abff93d 1900 break;
c912a829 1901 case F2FS_GOING_DOWN_METAFLUSH:
4d57b86d 1902 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
38f91ca8 1903 f2fs_stop_checkpoint(sbi, false);
c912a829 1904 break;
1abff93d 1905 default:
7fb17fe4
CY		 1906 ret = -EINVAL;
1907 goto out;
1abff93d 1908 }
7950e9ac 1909
4d57b86d
CY		 1910 f2fs_stop_gc_thread(sbi);
1911 f2fs_stop_discard_thread(sbi);
7950e9ac 1912
4d57b86d 1913 f2fs_drop_discard_cmd(sbi);
7950e9ac
CY		 1914 clear_opt(sbi, DISCARD);
1915
d0239e1b 1916 f2fs_update_time(sbi, REQ_TIME);
7fb17fe4 1917out:
60b2b4ee
ST		 1918 if (in != F2FS_GOING_DOWN_FULLSYNC)
1919 mnt_drop_write_file(filp);
7fb17fe4 1920 return ret;
1abff93d
JK		 1921}
1922
52656e6c
JK		 1923static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1924{
1925 struct inode *inode = file_inode(filp);
1926 struct super_block *sb = inode->i_sb;
1927 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1928 struct fstrim_range range;
1929 int ret;
4b2fecc8 1930
52656e6c
JK		 1931 if (!capable(CAP_SYS_ADMIN))
1932 return -EPERM;
4b2fecc8 1933
52656e6c
JK		 1934 if (!blk_queue_discard(q))
1935 return -EOPNOTSUPP;
4b2fecc8 1936
52656e6c
JK		 1937 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
1938 sizeof(range)))
1939 return -EFAULT;
4b2fecc8 1940
7fb17fe4
CY		 1941 ret = mnt_want_write_file(filp);
1942 if (ret)
1943 return ret;
1944
52656e6c
JK		 1945 range.minlen = max((unsigned int)range.minlen,
1946 q->limits.discard_granularity);
1947 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
7fb17fe4 1948 mnt_drop_write_file(filp);
52656e6c
JK		 1949 if (ret < 0)
1950 return ret;
4b2fecc8 1951
52656e6c
JK		 1952 if (copy_to_user((struct fstrim_range __user *)arg, &range,
1953 sizeof(range)))
1954 return -EFAULT;
d0239e1b 1955 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
52656e6c
JK		 1956 return 0;
1957}
1958
f424f664
JK		 1959static bool uuid_is_nonzero(__u8 u[16])
1960{
1961 int i;
1962
1963 for (i = 0; i < 16; i++)
1964 if (u[i])
1965 return true;
1966 return false;
1967}
1968
1969static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
1970{
f424f664
JK		 1971 struct inode *inode = file_inode(filp);
1972
ccd31cb2 1973 if (!f2fs_sb_has_encrypt(inode->i_sb))
ead710b7
CY		 1974 return -EOPNOTSUPP;
1975
d0239e1b 1976 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
7fb17fe4 1977
db717d8e 1978 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
f424f664
JK		 1979}
1980
1981static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
1982{
ccd31cb2 1983 if (!f2fs_sb_has_encrypt(file_inode(filp)->i_sb))
ead710b7 1984 return -EOPNOTSUPP;
db717d8e 1985 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
f424f664
JK		 1986}
1987
1988static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
1989{
1990 struct inode *inode = file_inode(filp);
1991 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1992 int err;
1993
ccd31cb2 1994 if (!f2fs_sb_has_encrypt(inode->i_sb))
f424f664
JK		 1995 return -EOPNOTSUPP;
1996
f424f664
JK		 1997 err = mnt_want_write_file(filp);
1998 if (err)
1999 return err;
2000
846ae671 2001 down_write(&sbi->sb_lock);
d0d3f1b3
CY		 2002
2003 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2004 goto got_it;
2005
f424f664
JK		 2006 /* update superblock with uuid */
2007 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2008
c5bda1c8 2009 err = f2fs_commit_super(sbi, false);
f424f664
JK		 2010 if (err) {
2011 /* undo new data */
2012 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
d0d3f1b3 2013 goto out_err;
f424f664
JK		 2014 }
2015got_it:
2016 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2017 16))
d0d3f1b3
CY		 2018 err = -EFAULT;
2019out_err:
846ae671 2020 up_write(&sbi->sb_lock);
d0d3f1b3
CY		 2021 mnt_drop_write_file(filp);
2022 return err;
f424f664
JK		 2023}
2024
c1c1b583
CY		 2025static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2026{
2027 struct inode *inode = file_inode(filp);
2028 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
d530d4d8 2029 __u32 sync;
7fb17fe4 2030 int ret;
c1c1b583
CY		 2031
2032 if (!capable(CAP_SYS_ADMIN))
2033 return -EPERM;
2034
d530d4d8 2035 if (get_user(sync, (__u32 __user *)arg))
c1c1b583
CY		 2036 return -EFAULT;
2037
d530d4d8
CY		 2038 if (f2fs_readonly(sbi->sb))
2039 return -EROFS;
c1c1b583 2040
7fb17fe4
CY		 2041 ret = mnt_want_write_file(filp);
2042 if (ret)
2043 return ret;
2044
d530d4d8 2045 if (!sync) {
7fb17fe4
CY		 2046 if (!mutex_trylock(&sbi->gc_mutex)) {
2047 ret = -EBUSY;
2048 goto out;
2049 }
d530d4d8
CY		 2050 } else {
2051 mutex_lock(&sbi->gc_mutex);
c1c1b583
CY		 2052 }
2053
e066b83c 2054 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
7fb17fe4
CY		 2055out:
2056 mnt_drop_write_file(filp);
2057 return ret;
c1c1b583
CY		 2058}
2059
34dc77ad
JK		 2060static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2061{
2062 struct inode *inode = file_inode(filp);
2063 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2064 struct f2fs_gc_range range;
2065 u64 end;
2066 int ret;
2067
2068 if (!capable(CAP_SYS_ADMIN))
2069 return -EPERM;
2070
2071 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2072 sizeof(range)))
2073 return -EFAULT;
2074
2075 if (f2fs_readonly(sbi->sb))
2076 return -EROFS;
2077
b82f6e34
YH		 2078 end = range.start + range.len;
2079 if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) {
2080 return -EINVAL;
2081 }
2082
34dc77ad
JK		 2083 ret = mnt_want_write_file(filp);
2084 if (ret)
2085 return ret;
2086
34dc77ad
JK		 2087do_more:
2088 if (!range.sync) {
2089 if (!mutex_trylock(&sbi->gc_mutex)) {
2090 ret = -EBUSY;
2091 goto out;
2092 }
2093 } else {
2094 mutex_lock(&sbi->gc_mutex);
2095 }
2096
2097 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
2098 range.start += sbi->blocks_per_seg;
2099 if (range.start <= end)
2100 goto do_more;
2101out:
2102 mnt_drop_write_file(filp);
2103 return ret;
2104}
2105
4d57b86d 2106static int f2fs_ioc_f2fs_write_checkpoint(struct file *filp, unsigned long arg)
456b88e4
CY		 2107{
2108 struct inode *inode = file_inode(filp);
2109 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
7fb17fe4 2110 int ret;
456b88e4
CY		 2111
2112 if (!capable(CAP_SYS_ADMIN))
2113 return -EPERM;
2114
2115 if (f2fs_readonly(sbi->sb))
2116 return -EROFS;
2117
7fb17fe4
CY		 2118 ret = mnt_want_write_file(filp);
2119 if (ret)
2120 return ret;
2121
2122 ret = f2fs_sync_fs(sbi->sb, 1);
2123
2124 mnt_drop_write_file(filp);
2125 return ret;
456b88e4
CY		 2126}
2127
d323d005
CY		 2128static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2129 struct file *filp,
2130 struct f2fs_defragment *range)
2131{
2132 struct inode *inode = file_inode(filp);
f3d98e74
CY		 2133 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2134 .m_seg_type = NO_CHECK_TYPE };
1061fd48 2135 struct extent_info ei = {0, 0, 0};
f3d98e74 2136 pgoff_t pg_start, pg_end, next_pgofs;
3519e3f9 2137 unsigned int blk_per_seg = sbi->blocks_per_seg;
d323d005 2138 unsigned int total = 0, sec_num;
d323d005
CY		 2139 block_t blk_end = 0;
2140 bool fragmented = false;
2141 int err;
2142
2143 /* if in-place-update policy is enabled, don't waste time here */
4d57b86d 2144 if (f2fs_should_update_inplace(inode, NULL))
d323d005
CY		 2145 return -EINVAL;
2146
09cbfeaf
KS		 2147 pg_start = range->start >> PAGE_SHIFT;
2148 pg_end = (range->start + range->len) >> PAGE_SHIFT;
d323d005 2149
2c4db1a6 2150 f2fs_balance_fs(sbi, true);
d323d005 2151
5955102c 2152 inode_lock(inode);
d323d005
CY		 2153
2154 /* writeback all dirty pages in the range */
2155 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
d8fe4f0e 2156 range->start + range->len - 1);
d323d005
CY		 2157 if (err)
2158 goto out;
2159
2160 /*
2161 * lookup mapping info in extent cache, skip defragmenting if physical
2162 * block addresses are continuous.
2163 */
2164 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2165 if (ei.fofs + ei.len >= pg_end)
2166 goto out;
2167 }
2168
2169 map.m_lblk = pg_start;
f3d98e74 2170 map.m_next_pgofs = &next_pgofs;
d323d005
CY		 2171
2172 /*
2173 * lookup mapping info in dnode page cache, skip defragmenting if all
2174 * physical block addresses are continuous even if there are hole(s)
2175 * in logical blocks.
2176 */
2177 while (map.m_lblk < pg_end) {
a1c1e9b7 2178 map.m_len = pg_end - map.m_lblk;
f2220c7f 2179 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2180 if (err)
2181 goto out;
2182
2183 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2184 map.m_lblk = next_pgofs;
d323d005
CY		 2185 continue;
2186 }
2187
25a912e5 2188 if (blk_end && blk_end != map.m_pblk)
d323d005 2189 fragmented = true;
25a912e5
CY		 2190
2191 /* record total count of block that we're going to move */
2192 total += map.m_len;
2193
d323d005
CY		 2194 blk_end = map.m_pblk + map.m_len;
2195
2196 map.m_lblk += map.m_len;
d323d005
CY		 2197 }
2198
2199 if (!fragmented)
2200 goto out;
2201
25a912e5 2202 sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
d323d005
CY		 2203
2204 /*
2205 * make sure there are enough free section for LFS allocation, this can
2206 * avoid defragment running in SSR mode when free section are allocated
2207 * intensively
2208 */
7f3037a5 2209 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
d323d005
CY		 2210 err = -EAGAIN;
2211 goto out;
2212 }
2213
25a912e5
CY		 2214 map.m_lblk = pg_start;
2215 map.m_len = pg_end - pg_start;
2216 total = 0;
2217
d323d005
CY		 2218 while (map.m_lblk < pg_end) {
2219 pgoff_t idx;
2220 int cnt = 0;
2221
2222do_map:
a1c1e9b7 2223 map.m_len = pg_end - map.m_lblk;
f2220c7f 2224 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
d323d005
CY		 2225 if (err)
2226 goto clear_out;
2227
2228 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
f3d98e74 2229 map.m_lblk = next_pgofs;
d323d005
CY		 2230 continue;
2231 }
2232
91942321 2233 set_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2234
2235 idx = map.m_lblk;
2236 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2237 struct page *page;
2238
4d57b86d 2239 page = f2fs_get_lock_data_page(inode, idx, true);
d323d005
CY		 2240 if (IS_ERR(page)) {
2241 err = PTR_ERR(page);
2242 goto clear_out;
2243 }
2244
2245 set_page_dirty(page);
2246 f2fs_put_page(page, 1);
2247
2248 idx++;
2249 cnt++;
2250 total++;
2251 }
2252
2253 map.m_lblk = idx;
d323d005
CY		 2254
2255 if (idx < pg_end && cnt < blk_per_seg)
2256 goto do_map;
2257
91942321 2258 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005
CY		 2259
2260 err = filemap_fdatawrite(inode->i_mapping);
2261 if (err)
2262 goto out;
2263 }
2264clear_out:
91942321 2265 clear_inode_flag(inode, FI_DO_DEFRAG);
d323d005 2266out:
5955102c 2267 inode_unlock(inode);
d323d005 2268 if (!err)
09cbfeaf 2269 range->len = (u64)total << PAGE_SHIFT;
d323d005
CY		 2270 return err;
2271}
2272
2273static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2274{
2275 struct inode *inode = file_inode(filp);
2276 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2277 struct f2fs_defragment range;
2278 int err;
2279
2280 if (!capable(CAP_SYS_ADMIN))
2281 return -EPERM;
2282
7eab0c0d 2283 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
d323d005
CY		 2284 return -EINVAL;
2285
d7563861
KM		 2286 if (f2fs_readonly(sbi->sb))
2287 return -EROFS;
d323d005
CY		 2288
2289 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
d7563861
KM		 2290 sizeof(range)))
2291 return -EFAULT;
d323d005
CY		 2292
2293 /* verify alignment of offset & size */
d7563861
KM		 2294 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2295 return -EINVAL;
d323d005 2296
1941d7bc 2297 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
d7563861
KM		 2298 sbi->max_file_blocks))
2299 return -EINVAL;
2300
2301 err = mnt_want_write_file(filp);
2302 if (err)
2303 return err;
1941d7bc 2304
d323d005 2305 err = f2fs_defragment_range(sbi, filp, &range);
d7563861
KM		 2306 mnt_drop_write_file(filp);
2307
d0239e1b 2308 f2fs_update_time(sbi, REQ_TIME);
d323d005 2309 if (err < 0)
d7563861 2310 return err;
d323d005
CY		 2311
2312 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2313 sizeof(range)))
d7563861
KM		 2314 return -EFAULT;
2315
2316 return 0;
d323d005
CY		 2317}
2318
4dd6f977
JK		 2319static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2320 struct file *file_out, loff_t pos_out, size_t len)
2321{
2322 struct inode *src = file_inode(file_in);
2323 struct inode *dst = file_inode(file_out);
2324 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2325 size_t olen = len, dst_max_i_size = 0;
2326 size_t dst_osize;
2327 int ret;
2328
2329 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2330 src->i_sb != dst->i_sb)
2331 return -EXDEV;
2332
2333 if (unlikely(f2fs_readonly(src->i_sb)))
2334 return -EROFS;
2335
fe8494bf
CY		 2336 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2337 return -EINVAL;
4dd6f977
JK		 2338
2339 if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
2340 return -EOPNOTSUPP;
2341
d95fd91c
FL		 2342 if (src == dst) {
2343 if (pos_in == pos_out)
2344 return 0;
2345 if (pos_out > pos_in && pos_out < pos_in + len)
2346 return -EINVAL;
2347 }
2348
4dd6f977 2349 inode_lock(src);
b2532c69 2350 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
20a3d61d 2351 if (src != dst) {
bb06664a
CY		 2352 ret = -EBUSY;
2353 if (!inode_trylock(dst))
2354 goto out;
b2532c69 2355 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) {
bb06664a 2356 inode_unlock(dst);
20a3d61d
CY		 2357 goto out;
2358 }
2359 }
4dd6f977
JK		 2360
2361 ret = -EINVAL;
2362 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2363 goto out_unlock;
2364 if (len == 0)
2365 olen = len = src->i_size - pos_in;
2366 if (pos_in + len == src->i_size)
2367 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2368 if (len == 0) {
2369 ret = 0;
2370 goto out_unlock;
2371 }
2372
2373 dst_osize = dst->i_size;
2374 if (pos_out + olen > dst->i_size)
2375 dst_max_i_size = pos_out + olen;
2376
2377 /* verify the end result is block aligned */
2378 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2379 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2380 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2381 goto out_unlock;
2382
2383 ret = f2fs_convert_inline_inode(src);
2384 if (ret)
2385 goto out_unlock;
2386
2387 ret = f2fs_convert_inline_inode(dst);
2388 if (ret)
2389 goto out_unlock;
2390
2391 /* write out all dirty pages from offset */
2392 ret = filemap_write_and_wait_range(src->i_mapping,
2393 pos_in, pos_in + len);
2394 if (ret)
2395 goto out_unlock;
2396
2397 ret = filemap_write_and_wait_range(dst->i_mapping,
2398 pos_out, pos_out + len);
2399 if (ret)
2400 goto out_unlock;
2401
2402 f2fs_balance_fs(sbi, true);
2403 f2fs_lock_op(sbi);
61e4da11
FL		 2404 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2405 pos_out >> F2FS_BLKSIZE_BITS,
2406 len >> F2FS_BLKSIZE_BITS, false);
4dd6f977
JK		 2407
2408 if (!ret) {
2409 if (dst_max_i_size)
2410 f2fs_i_size_write(dst, dst_max_i_size);
2411 else if (dst_osize != dst->i_size)
2412 f2fs_i_size_write(dst, dst_osize);
2413 }
2414 f2fs_unlock_op(sbi);
2415out_unlock:
bb06664a 2416 if (src != dst) {
b2532c69 2417 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
4dd6f977 2418 inode_unlock(dst);
bb06664a 2419 }
20a3d61d 2420out:
b2532c69 2421 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
4dd6f977
JK		 2422 inode_unlock(src);
2423 return ret;
2424}
2425
2426static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2427{
2428 struct f2fs_move_range range;
2429 struct fd dst;
2430 int err;
2431
2432 if (!(filp->f_mode & FMODE_READ) ||
2433 !(filp->f_mode & FMODE_WRITE))
2434 return -EBADF;
2435
2436 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2437 sizeof(range)))
2438 return -EFAULT;
2439
2440 dst = fdget(range.dst_fd);
2441 if (!dst.file)
2442 return -EBADF;
2443
2444 if (!(dst.file->f_mode & FMODE_WRITE)) {
2445 err = -EBADF;
2446 goto err_out;
2447 }
2448
2449 err = mnt_want_write_file(filp);
2450 if (err)
2451 goto err_out;
2452
2453 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2454 range.pos_out, range.len);
2455
2456 mnt_drop_write_file(filp);
3cecfa5f
KM		 2457 if (err)
2458 goto err_out;
4dd6f977
JK		 2459
2460 if (copy_to_user((struct f2fs_move_range __user *)arg,
2461 &range, sizeof(range)))
2462 err = -EFAULT;
2463err_out:
2464 fdput(dst);
2465 return err;
2466}
2467
e066b83c
JK		 2468static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2469{
2470 struct inode *inode = file_inode(filp);
2471 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2472 struct sit_info *sm = SIT_I(sbi);
2473 unsigned int start_segno = 0, end_segno = 0;
2474 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2475 struct f2fs_flush_device range;
2476 int ret;
2477
2478 if (!capable(CAP_SYS_ADMIN))
2479 return -EPERM;
2480
2481 if (f2fs_readonly(sbi->sb))
2482 return -EROFS;
2483
2484 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2485 sizeof(range)))
2486 return -EFAULT;
2487
2488 if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num ||
2489 sbi->segs_per_sec != 1) {
2490 f2fs_msg(sbi->sb, KERN_WARNING,
2491 "Can't flush %u in %d for segs_per_sec %u != 1\n",
2492 range.dev_num, sbi->s_ndevs,
2493 sbi->segs_per_sec);
2494 return -EINVAL;
2495 }
2496
2497 ret = mnt_want_write_file(filp);
2498 if (ret)
2499 return ret;
2500
2501 if (range.dev_num != 0)
2502 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2503 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2504
2505 start_segno = sm->last_victim[FLUSH_DEVICE];
2506 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2507 start_segno = dev_start_segno;
2508 end_segno = min(start_segno + range.segments, dev_end_segno);
2509
2510 while (start_segno < end_segno) {
2511 if (!mutex_trylock(&sbi->gc_mutex)) {
2512 ret = -EBUSY;
2513 goto out;
2514 }
2515 sm->last_victim[GC_CB] = end_segno + 1;
2516 sm->last_victim[GC_GREEDY] = end_segno + 1;
2517 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2518 ret = f2fs_gc(sbi, true, true, start_segno);
2519 if (ret == -EAGAIN)
2520 ret = 0;
2521 else if (ret < 0)
2522 break;
2523 start_segno++;
2524 }
2525out:
2526 mnt_drop_write_file(filp);
2527 return ret;
2528}
2529
e65ef207
JK		 2530static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2531{
2532 struct inode *inode = file_inode(filp);
2533 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2534
2535 /* Must validate to set it with SQLite behavior in Android. */
2536 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2537
2538 return put_user(sb_feature, (u32 __user *)arg);
2539}
e066b83c 2540
2c1d0305
CY		 2541#ifdef CONFIG_QUOTA
2542static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2543{
2544 struct inode *inode = file_inode(filp);
2545 struct f2fs_inode_info *fi = F2FS_I(inode);
2546 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2547 struct super_block *sb = sbi->sb;
2548 struct dquot *transfer_to[MAXQUOTAS] = {};
2549 struct page *ipage;
2550 kprojid_t kprojid;
2551 int err;
2552
2553 if (!f2fs_sb_has_project_quota(sb)) {
2554 if (projid != F2FS_DEF_PROJID)
2555 return -EOPNOTSUPP;
2556 else
2557 return 0;
2558 }
2559
2560 if (!f2fs_has_extra_attr(inode))
2561 return -EOPNOTSUPP;
2562
2563 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2564
2565 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2566 return 0;
2567
2568 err = mnt_want_write_file(filp);
2569 if (err)
2570 return err;
2571
2572 err = -EPERM;
2573 inode_lock(inode);
2574
2575 /* Is it quota file? Do not allow user to mess with it */
2576 if (IS_NOQUOTA(inode))
2577 goto out_unlock;
2578
4d57b86d 2579 ipage = f2fs_get_node_page(sbi, inode->i_ino);
2c1d0305
CY		 2580 if (IS_ERR(ipage)) {
2581 err = PTR_ERR(ipage);
2582 goto out_unlock;
2583 }
2584
2585 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2586 i_projid)) {
2587 err = -EOVERFLOW;
2588 f2fs_put_page(ipage, 1);
2589 goto out_unlock;
2590 }
2591 f2fs_put_page(ipage, 1);
2592
c22aecd7
CY		 2593 err = dquot_initialize(inode);
2594 if (err)
2595 goto out_unlock;
2c1d0305
CY		 2596
2597 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2598 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2599 err = __dquot_transfer(inode, transfer_to);
2600 dqput(transfer_to[PRJQUOTA]);
2601 if (err)
2602 goto out_dirty;
2603 }
2604
2605 F2FS_I(inode)->i_projid = kprojid;
2606 inode->i_ctime = current_time(inode);
2607out_dirty:
2608 f2fs_mark_inode_dirty_sync(inode, true);
2609out_unlock:
2610 inode_unlock(inode);
2611 mnt_drop_write_file(filp);
2612 return err;
2613}
2614#else
2615static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2616{
2617 if (projid != F2FS_DEF_PROJID)
2618 return -EOPNOTSUPP;
2619 return 0;
2620}
2621#endif
2622
2623/* Transfer internal flags to xflags */
2624static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags)
2625{
2626 __u32 xflags = 0;
2627
59c84408 2628 if (iflags & F2FS_SYNC_FL)
2c1d0305 2629 xflags |= FS_XFLAG_SYNC;
59c84408 2630 if (iflags & F2FS_IMMUTABLE_FL)
2c1d0305 2631 xflags |= FS_XFLAG_IMMUTABLE;
59c84408 2632 if (iflags & F2FS_APPEND_FL)
2c1d0305 2633 xflags |= FS_XFLAG_APPEND;
59c84408 2634 if (iflags & F2FS_NODUMP_FL)
2c1d0305 2635 xflags |= FS_XFLAG_NODUMP;
59c84408 2636 if (iflags & F2FS_NOATIME_FL)
2c1d0305 2637 xflags |= FS_XFLAG_NOATIME;
59c84408 2638 if (iflags & F2FS_PROJINHERIT_FL)
2c1d0305
CY		 2639 xflags |= FS_XFLAG_PROJINHERIT;
2640 return xflags;
2641}
2642
2643#define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \
2644 FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \
2645 FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT)
2646
2c1d0305
CY		 2647/* Transfer xflags flags to internal */
2648static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags)
2649{
2650 unsigned long iflags = 0;
2651
2652 if (xflags & FS_XFLAG_SYNC)
59c84408 2653 iflags |= F2FS_SYNC_FL;
2c1d0305 2654 if (xflags & FS_XFLAG_IMMUTABLE)
59c84408 2655 iflags |= F2FS_IMMUTABLE_FL;
2c1d0305 2656 if (xflags & FS_XFLAG_APPEND)
59c84408 2657 iflags |= F2FS_APPEND_FL;
2c1d0305 2658 if (xflags & FS_XFLAG_NODUMP)
59c84408 2659 iflags |= F2FS_NODUMP_FL;
2c1d0305 2660 if (xflags & FS_XFLAG_NOATIME)
59c84408 2661 iflags |= F2FS_NOATIME_FL;
2c1d0305 2662 if (xflags & FS_XFLAG_PROJINHERIT)
59c84408 2663 iflags |= F2FS_PROJINHERIT_FL;
2c1d0305
CY		 2664
2665 return iflags;
2666}
2667
2668static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
2669{
2670 struct inode *inode = file_inode(filp);
2671 struct f2fs_inode_info *fi = F2FS_I(inode);
2672 struct fsxattr fa;
2673
2674 memset(&fa, 0, sizeof(struct fsxattr));
2675 fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags &
c807a7cb 2676 F2FS_FL_USER_VISIBLE);
2c1d0305
CY		 2677
2678 if (f2fs_sb_has_project_quota(inode->i_sb))
2679 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
2680 fi->i_projid);
2681
2682 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2683 return -EFAULT;
2684 return 0;
2685}
2686
2687static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
2688{
2689 struct inode *inode = file_inode(filp);
2690 struct f2fs_inode_info *fi = F2FS_I(inode);
2691 struct fsxattr fa;
2692 unsigned int flags;
2693 int err;
2694
2695 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
2696 return -EFAULT;
2697
2698 /* Make sure caller has proper permission */
2699 if (!inode_owner_or_capable(inode))
2700 return -EACCES;
2701
2702 if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS)
2703 return -EOPNOTSUPP;
2704
2705 flags = f2fs_xflags_to_iflags(fa.fsx_xflags);
2706 if (f2fs_mask_flags(inode->i_mode, flags) != flags)
2707 return -EOPNOTSUPP;
2708
2709 err = mnt_want_write_file(filp);
2710 if (err)
2711 return err;
2712
2713 inode_lock(inode);
2714 flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) |
2715 (flags & F2FS_FL_XFLAG_VISIBLE);
2716 err = __f2fs_ioc_setflags(inode, flags);
2717 inode_unlock(inode);
2718 mnt_drop_write_file(filp);
2719 if (err)
2720 return err;
2721
2722 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
2723 if (err)
2724 return err;
2725
2726 return 0;
2727}
e066b83c 2728
1ad71a27
JK		 2729int f2fs_pin_file_control(struct inode *inode, bool inc)
2730{
2731 struct f2fs_inode_info *fi = F2FS_I(inode);
2732 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2733
2734 /* Use i_gc_failures for normal file as a risk signal. */
2735 if (inc)
2ef79ecb
CY		 2736 f2fs_i_gc_failures_write(inode,
2737 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
1ad71a27 2738
2ef79ecb 2739 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
1ad71a27
JK		 2740 f2fs_msg(sbi->sb, KERN_WARNING,
2741 "%s: Enable GC = ino %lx after %x GC trials\n",
2ef79ecb
CY		 2742 __func__, inode->i_ino,
2743 fi->i_gc_failures[GC_FAILURE_PIN]);
1ad71a27
JK		 2744 clear_inode_flag(inode, FI_PIN_FILE);
2745 return -EAGAIN;
2746 }
2747 return 0;
2748}
2749
2750static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
2751{
2752 struct inode *inode = file_inode(filp);
2753 __u32 pin;
2754 int ret = 0;
2755
2756 if (!inode_owner_or_capable(inode))
2757 return -EACCES;
2758
2759 if (get_user(pin, (__u32 __user *)arg))
2760 return -EFAULT;
2761
2762 if (!S_ISREG(inode->i_mode))
2763 return -EINVAL;
2764
2765 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
2766 return -EROFS;
2767
2768 ret = mnt_want_write_file(filp);
2769 if (ret)
2770 return ret;
2771
2772 inode_lock(inode);
2773
4d57b86d 2774 if (f2fs_should_update_outplace(inode, NULL)) {
bb9e3bb8
CY		 2775 ret = -EINVAL;
2776 goto out;
2777 }
2778
1ad71a27
JK		 2779 if (!pin) {
2780 clear_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 2781 F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = 1;
1ad71a27
JK		 2782 goto done;
2783 }
2784
2785 if (f2fs_pin_file_control(inode, false)) {
2786 ret = -EAGAIN;
2787 goto out;
2788 }
2789 ret = f2fs_convert_inline_inode(inode);
2790 if (ret)
2791 goto out;
2792
2793 set_inode_flag(inode, FI_PIN_FILE);
2ef79ecb 2794 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 2795done:
2796 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2797out:
2798 inode_unlock(inode);
2799 mnt_drop_write_file(filp);
2800 return ret;
2801}
2802
2803static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
2804{
2805 struct inode *inode = file_inode(filp);
2806 __u32 pin = 0;
2807
2808 if (is_inode_flag_set(inode, FI_PIN_FILE))
2ef79ecb 2809 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
1ad71a27
JK		 2810 return put_user(pin, (u32 __user *)arg);
2811}
2812
c4020b2d
CY		 2813int f2fs_precache_extents(struct inode *inode)
2814{
2815 struct f2fs_inode_info *fi = F2FS_I(inode);
2816 struct f2fs_map_blocks map;
2817 pgoff_t m_next_extent;
2818 loff_t end;
2819 int err;
2820
2821 if (is_inode_flag_set(inode, FI_NO_EXTENT))
2822 return -EOPNOTSUPP;
2823
2824 map.m_lblk = 0;
2825 map.m_next_pgofs = NULL;
2826 map.m_next_extent = &m_next_extent;
2827 map.m_seg_type = NO_CHECK_TYPE;
2828 end = F2FS_I_SB(inode)->max_file_blocks;
2829
2830 while (map.m_lblk < end) {
2831 map.m_len = end - map.m_lblk;
2832
b2532c69 2833 down_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d 2834 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
b2532c69 2835 up_write(&fi->i_gc_rwsem[WRITE]);
c4020b2d
CY		 2836 if (err)
2837 return err;
2838
2839 map.m_lblk = m_next_extent;
2840 }
2841
2842 return err;
2843}
2844
2845static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
2846{
2847 return f2fs_precache_extents(file_inode(filp));
2848}
2849
52656e6c
JK		 2850long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2851{
1f227a3e
JK		 2852 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
2853 return -EIO;
2854
52656e6c
JK		 2855 switch (cmd) {
2856 case F2FS_IOC_GETFLAGS:
2857 return f2fs_ioc_getflags(filp, arg);
2858 case F2FS_IOC_SETFLAGS:
2859 return f2fs_ioc_setflags(filp, arg);
d49f3e89
CY		 2860 case F2FS_IOC_GETVERSION:
2861 return f2fs_ioc_getversion(filp, arg);
88b88a66
JK		 2862 case F2FS_IOC_START_ATOMIC_WRITE:
2863 return f2fs_ioc_start_atomic_write(filp);
2864 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2865 return f2fs_ioc_commit_atomic_write(filp);
02a1335f
JK		 2866 case F2FS_IOC_START_VOLATILE_WRITE:
2867 return f2fs_ioc_start_volatile_write(filp);
1e84371f
JK		 2868 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2869 return f2fs_ioc_release_volatile_write(filp);
2870 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2871 return f2fs_ioc_abort_volatile_write(filp);
1abff93d
JK		 2872 case F2FS_IOC_SHUTDOWN:
2873 return f2fs_ioc_shutdown(filp, arg);
52656e6c
JK		 2874 case FITRIM:
2875 return f2fs_ioc_fitrim(filp, arg);
f424f664
JK		 2876 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2877 return f2fs_ioc_set_encryption_policy(filp, arg);
2878 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2879 return f2fs_ioc_get_encryption_policy(filp, arg);
2880 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2881 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
c1c1b583
CY		 2882 case F2FS_IOC_GARBAGE_COLLECT:
2883 return f2fs_ioc_gc(filp, arg);
34dc77ad
JK		 2884 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
2885 return f2fs_ioc_gc_range(filp, arg);
456b88e4 2886 case F2FS_IOC_WRITE_CHECKPOINT:
4d57b86d 2887 return f2fs_ioc_f2fs_write_checkpoint(filp, arg);
d323d005
CY		 2888 case F2FS_IOC_DEFRAGMENT:
2889 return f2fs_ioc_defragment(filp, arg);
4dd6f977
JK		 2890 case F2FS_IOC_MOVE_RANGE:
2891 return f2fs_ioc_move_range(filp, arg);
e066b83c
JK		 2892 case F2FS_IOC_FLUSH_DEVICE:
2893 return f2fs_ioc_flush_device(filp, arg);
e65ef207
JK		 2894 case F2FS_IOC_GET_FEATURES:
2895 return f2fs_ioc_get_features(filp, arg);
2c1d0305
CY		 2896 case F2FS_IOC_FSGETXATTR:
2897 return f2fs_ioc_fsgetxattr(filp, arg);
2898 case F2FS_IOC_FSSETXATTR:
2899 return f2fs_ioc_fssetxattr(filp, arg);
1ad71a27
JK		 2900 case F2FS_IOC_GET_PIN_FILE:
2901 return f2fs_ioc_get_pin_file(filp, arg);
2902 case F2FS_IOC_SET_PIN_FILE:
2903 return f2fs_ioc_set_pin_file(filp, arg);
c4020b2d
CY		 2904 case F2FS_IOC_PRECACHE_EXTENTS:
2905 return f2fs_ioc_precache_extents(filp, arg);
fbfa2cc5
JK		 2906 default:
2907 return -ENOTTY;
2908 }
2909}
2910
fcc85a4d
JK		 2911static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
2912{
b439b103
JK		 2913 struct file *file = iocb->ki_filp;
2914 struct inode *inode = file_inode(file);
2915 ssize_t ret;
fcc85a4d 2916
1f227a3e
JK		 2917 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
2918 return -EIO;
2919
b91050a8
HL		 2920 if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT))
2921 return -EINVAL;
2922
2923 if (!inode_trylock(inode)) {
2924 if (iocb->ki_flags & IOCB_NOWAIT)
2925 return -EAGAIN;
2926 inode_lock(inode);
2927 }
2928
b439b103
JK		 2929 ret = generic_write_checks(iocb, from);
2930 if (ret > 0) {
dc7a10dd
JK		 2931 bool preallocated = false;
2932 size_t target_size = 0;
dc91de78 2933 int err;
a7de6086 2934
dc91de78
JK		 2935 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
2936 set_inode_flag(inode, FI_NO_PREALLOC);
a7de6086 2937
b91050a8
HL		 2938 if ((iocb->ki_flags & IOCB_NOWAIT) &&
2939 (iocb->ki_flags & IOCB_DIRECT)) {
2940 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
2941 iov_iter_count(from)) ||
2942 f2fs_has_inline_data(inode) ||
2943 f2fs_force_buffered_io(inode, WRITE)) {
cba41be0
YH		 2944 clear_inode_flag(inode,
2945 FI_NO_PREALLOC);
b91050a8
HL		 2946 inode_unlock(inode);
2947 return -EAGAIN;
2948 }
2949
2950 } else {
dc7a10dd
JK		 2951 preallocated = true;
2952 target_size = iocb->ki_pos + iov_iter_count(from);
2953
b91050a8
HL		 2954 err = f2fs_preallocate_blocks(iocb, from);
2955 if (err) {
2956 clear_inode_flag(inode, FI_NO_PREALLOC);
2957 inode_unlock(inode);
2958 return err;
2959 }
9dfa1baf 2960 }
a7de6086 2961 ret = __generic_file_write_iter(iocb, from);
dc91de78 2962 clear_inode_flag(inode, FI_NO_PREALLOC);
b0af6d49 2963
dc7a10dd
JK		 2964 /* if we couldn't write data, we should deallocate blocks. */
2965 if (preallocated && i_size_read(inode) < target_size)
2966 f2fs_truncate(inode);
2967
b0af6d49
CY		 2968 if (ret > 0)
2969 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
b439b103
JK		 2970 }
2971 inode_unlock(inode);
2972
e2592217
CH		 2973 if (ret > 0)
2974 ret = generic_write_sync(iocb, ret);
b439b103 2975 return ret;
fcc85a4d
JK		 2976}
2977
e9750824
NJ		 2978#ifdef CONFIG_COMPAT
2979long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2980{
2981 switch (cmd) {
2982 case F2FS_IOC32_GETFLAGS:
2983 cmd = F2FS_IOC_GETFLAGS;
2984 break;
2985 case F2FS_IOC32_SETFLAGS:
2986 cmd = F2FS_IOC_SETFLAGS;
2987 break;
04ef4b62
CY		 2988 case F2FS_IOC32_GETVERSION:
2989 cmd = F2FS_IOC_GETVERSION;
2990 break;
2991 case F2FS_IOC_START_ATOMIC_WRITE:
2992 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2993 case F2FS_IOC_START_VOLATILE_WRITE:
2994 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2995 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2996 case F2FS_IOC_SHUTDOWN:
2997 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2998 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2999 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3000 case F2FS_IOC_GARBAGE_COLLECT:
34dc77ad 3001 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
04ef4b62
CY		 3002 case F2FS_IOC_WRITE_CHECKPOINT:
3003 case F2FS_IOC_DEFRAGMENT:
4dd6f977 3004 case F2FS_IOC_MOVE_RANGE:
e066b83c 3005 case F2FS_IOC_FLUSH_DEVICE:
e65ef207 3006 case F2FS_IOC_GET_FEATURES:
2c1d0305
CY		 3007 case F2FS_IOC_FSGETXATTR:
3008 case F2FS_IOC_FSSETXATTR:
1ad71a27
JK		 3009 case F2FS_IOC_GET_PIN_FILE:
3010 case F2FS_IOC_SET_PIN_FILE:
c4020b2d 3011 case F2FS_IOC_PRECACHE_EXTENTS:
4dd6f977 3012 break;
e9750824
NJ		 3013 default:
3014 return -ENOIOCTLCMD;
3015 }
3016 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3017}
3018#endif
3019
fbfa2cc5 3020const struct file_operations f2fs_file_operations = {
267378d4 3021 .llseek = f2fs_llseek,
aad4f8bb 3022 .read_iter = generic_file_read_iter,
fcc85a4d
JK		 3023 .write_iter = f2fs_file_write_iter,
3024 .open = f2fs_file_open,
12662234 3025 .release = f2fs_release_file,
fbfa2cc5 3026 .mmap = f2fs_file_mmap,
7a10f017 3027 .flush = f2fs_file_flush,
fbfa2cc5
JK		 3028 .fsync = f2fs_sync_file,
3029 .fallocate = f2fs_fallocate,
3030 .unlocked_ioctl = f2fs_ioctl,
e9750824
NJ		 3031#ifdef CONFIG_COMPAT
3032 .compat_ioctl = f2fs_compat_ioctl,
3033#endif
fbfa2cc5 3034 .splice_read = generic_file_splice_read,
8d020765 3035 .splice_write = iter_file_splice_write,
fbfa2cc5 3036};
Linux 6.x block layer and io_uring tree(s)