fs/f2fs/file.c

   1 /*
   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>
  16 #include <linux/blkdev.h>
  17 #include <linux/falloc.h>
  18 #include <linux/types.h>
  19 #include <linux/compat.h>
  20 #include <linux/uaccess.h>
  21 #include <linux/mount.h>
  22
  23 #include "f2fs.h"
  24 #include "node.h"
  25 #include "segment.h"
  26 #include "xattr.h"
  27 #include "acl.h"
  28 #include <trace/events/f2fs.h>
  29
  30 static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma,
  31                                                 struct vm_fault *vmf)
  32 {
  33         struct page *page = vmf->page;
  34         struct inode *inode = file_inode(vma->vm_file);
  35         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
  36         block_t old_blk_addr;
  37         struct dnode_of_data dn;
  38         int err, ilock;
  39
  40         f2fs_balance_fs(sbi);
  41
  42         sb_start_pagefault(inode->i_sb);
  43
  44         /* block allocation */
  45         ilock = mutex_lock_op(sbi);
  46         set_new_dnode(&dn, inode, NULL, NULL, 0);
  47         err = get_dnode_of_data(&dn, page->index, ALLOC_NODE);
  48         if (err) {
  49                 mutex_unlock_op(sbi, ilock);
  50                 goto out;
  51         }
  52
  53         old_blk_addr = dn.data_blkaddr;
  54
  55         if (old_blk_addr == NULL_ADDR) {
  56                 err = reserve_new_block(&dn);
  57                 if (err) {
  58                         f2fs_put_dnode(&dn);
  59                         mutex_unlock_op(sbi, ilock);
  60                         goto out;
  61                 }
  62         }
  63         f2fs_put_dnode(&dn);
  64         mutex_unlock_op(sbi, ilock);
  65
  66         file_update_time(vma->vm_file);
  67         lock_page(page);
  68         if (page->mapping != inode->i_mapping ||
  69                         page_offset(page) > i_size_read(inode) ||
  70                         !PageUptodate(page)) {
  71                 unlock_page(page);
  72                 err = -EFAULT;
  73                 goto out;
  74         }
  75
  76         /*
  77          * check to see if the page is mapped already (no holes)
  78          */
  79         if (PageMappedToDisk(page))
  80                 goto mapped;
  81
  82         /* page is wholly or partially inside EOF */
  83         if (((page->index + 1) << PAGE_CACHE_SHIFT) > i_size_read(inode)) {
  84                 unsigned offset;
  85                 offset = i_size_read(inode) & ~PAGE_CACHE_MASK;
  86                 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
  87         }
  88         set_page_dirty(page);
  89         SetPageUptodate(page);
  90
  91 mapped:
  92         /* fill the page */
  93         wait_on_page_writeback(page);
  94 out:
  95         sb_end_pagefault(inode->i_sb);
  96         return block_page_mkwrite_return(err);
  97 }
  98
  99 static const struct vm_operations_struct f2fs_file_vm_ops = {
 100         .fault          = filemap_fault,
 101         .page_mkwrite   = f2fs_vm_page_mkwrite,
 102         .remap_pages    = generic_file_remap_pages,
 103 };
 104
 105 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 106 {
 107         struct inode *inode = file->f_mapping->host;
 108         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
 109         int ret = 0;
 110         bool need_cp = false;
 111         struct writeback_control wbc = {
 112                 .sync_mode = WB_SYNC_ALL,
 113                 .nr_to_write = LONG_MAX,
 114                 .for_reclaim = 0,
 115         };
 116
 117         if (f2fs_readonly(inode->i_sb))
 118                 return 0;
 119
 120         trace_f2fs_sync_file_enter(inode);
 121         ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
 122         if (ret) {
 123                 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
 124                 return ret;
 125         }
 126
 127         /* guarantee free sections for fsync */
 128         f2fs_balance_fs(sbi);
 129
 130         mutex_lock(&inode->i_mutex);
 131
 132         if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
 133                 goto out;
 134
 135         if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
 136                 need_cp = true;
 137         else if (is_cp_file(inode))
 138                 need_cp = true;
 139         else if (!space_for_roll_forward(sbi))
 140                 need_cp = true;
 141         else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
 142                 need_cp = true;
 143
 144         if (need_cp) {
 145                 /* all the dirty node pages should be flushed for POR */
 146                 ret = f2fs_sync_fs(inode->i_sb, 1);
 147         } else {
 148                 /* if there is no written node page, write its inode page */
 149                 while (!sync_node_pages(sbi, inode->i_ino, &wbc)) {
 150                         ret = f2fs_write_inode(inode, NULL);
 151                         if (ret)
 152                                 goto out;
 153                 }
 154                 filemap_fdatawait_range(sbi->node_inode->i_mapping,
 155                                                         0, LONG_MAX);
 156                 ret = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL);
 157         }
 158 out:
 159         mutex_unlock(&inode->i_mutex);
 160         trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
 161         return ret;
 162 }
 163
 164 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
 165 {
 166         file_accessed(file);
 167         vma->vm_ops = &f2fs_file_vm_ops;
 168         return 0;
 169 }
 170
 171 int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
 172 {
 173         int nr_free = 0, ofs = dn->ofs_in_node;
 174         struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb);
 175         struct f2fs_node *raw_node;
 176         __le32 *addr;
 177
 178         raw_node = page_address(dn->node_page);
 179         addr = blkaddr_in_node(raw_node) + ofs;
 180
 181         for ( ; count > 0; count--, addr++, dn->ofs_in_node++) {
 182                 block_t blkaddr = le32_to_cpu(*addr);
 183                 if (blkaddr == NULL_ADDR)
 184                         continue;
 185
 186                 update_extent_cache(NULL_ADDR, dn);
 187                 invalidate_blocks(sbi, blkaddr);
 188                 dec_valid_block_count(sbi, dn->inode, 1);
 189                 nr_free++;
 190         }
 191         if (nr_free) {
 192                 set_page_dirty(dn->node_page);
 193                 sync_inode_page(dn);
 194         }
 195         dn->ofs_in_node = ofs;
 196
 197         trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
 198                                          dn->ofs_in_node, nr_free);
 199         return nr_free;
 200 }
 201
 202 void truncate_data_blocks(struct dnode_of_data *dn)
 203 {
 204         truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
 205 }
 206
 207 static void truncate_partial_data_page(struct inode *inode, u64 from)
 208 {
 209         unsigned offset = from & (PAGE_CACHE_SIZE - 1);
 210         struct page *page;
 211
 212         if (!offset)
 213                 return;
 214
 215         page = find_data_page(inode, from >> PAGE_CACHE_SHIFT, false);
 216         if (IS_ERR(page))
 217                 return;
 218
 219         lock_page(page);
 220         if (page->mapping != inode->i_mapping) {
 221                 f2fs_put_page(page, 1);
 222                 return;
 223         }
 224         wait_on_page_writeback(page);
 225         zero_user(page, offset, PAGE_CACHE_SIZE - offset);
 226         set_page_dirty(page);
 227         f2fs_put_page(page, 1);
 228 }
 229
 230 static int truncate_blocks(struct inode *inode, u64 from)
 231 {
 232         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
 233         unsigned int blocksize = inode->i_sb->s_blocksize;
 234         struct dnode_of_data dn;
 235         pgoff_t free_from;
 236         int count = 0, ilock = -1;
 237         int err;
 238
 239         trace_f2fs_truncate_blocks_enter(inode, from);
 240
 241         free_from = (pgoff_t)
 242                         ((from + blocksize - 1) >> (sbi->log_blocksize));
 243
 244         ilock = mutex_lock_op(sbi);
 245         set_new_dnode(&dn, inode, NULL, NULL, 0);
 246         err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE);
 247         if (err) {
 248                 if (err == -ENOENT)
 249                         goto free_next;
 250                 mutex_unlock_op(sbi, ilock);
 251                 trace_f2fs_truncate_blocks_exit(inode, err);
 252                 return err;
 253         }
 254
 255         if (IS_INODE(dn.node_page))
 256                 count = ADDRS_PER_INODE;
 257         else
 258                 count = ADDRS_PER_BLOCK;
 259
 260         count -= dn.ofs_in_node;
 261         BUG_ON(count < 0);
 262
 263         if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
 264                 truncate_data_blocks_range(&dn, count);
 265                 free_from += count;
 266         }
 267
 268         f2fs_put_dnode(&dn);
 269 free_next:
 270         err = truncate_inode_blocks(inode, free_from);
 271         mutex_unlock_op(sbi, ilock);
 272
 273         /* lastly zero out the first data page */
 274         truncate_partial_data_page(inode, from);
 275
 276         trace_f2fs_truncate_blocks_exit(inode, err);
 277         return err;
 278 }
 279
 280 void f2fs_truncate(struct inode *inode)
 281 {
 282         if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
 283                                 S_ISLNK(inode->i_mode)))
 284                 return;
 285
 286         trace_f2fs_truncate(inode);
 287
 288         if (!truncate_blocks(inode, i_size_read(inode))) {
 289                 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 290                 mark_inode_dirty(inode);
 291         }
 292 }
 293
 294 int f2fs_getattr(struct vfsmount *mnt,
 295                          struct dentry *dentry, struct kstat *stat)
 296 {
 297         struct inode *inode = dentry->d_inode;
 298         generic_fillattr(inode, stat);
 299         stat->blocks <<= 3;
 300         return 0;
 301 }
 302
 303 #ifdef CONFIG_F2FS_FS_POSIX_ACL
 304 static void __setattr_copy(struct inode *inode, const struct iattr *attr)
 305 {
 306         struct f2fs_inode_info *fi = F2FS_I(inode);
 307         unsigned int ia_valid = attr->ia_valid;
 308
 309         if (ia_valid & ATTR_UID)
 310                 inode->i_uid = attr->ia_uid;
 311         if (ia_valid & ATTR_GID)
 312                 inode->i_gid = attr->ia_gid;
 313         if (ia_valid & ATTR_ATIME)
 314                 inode->i_atime = timespec_trunc(attr->ia_atime,
 315                                                 inode->i_sb->s_time_gran);
 316         if (ia_valid & ATTR_MTIME)
 317                 inode->i_mtime = timespec_trunc(attr->ia_mtime,
 318                                                 inode->i_sb->s_time_gran);
 319         if (ia_valid & ATTR_CTIME)
 320                 inode->i_ctime = timespec_trunc(attr->ia_ctime,
 321                                                 inode->i_sb->s_time_gran);
 322         if (ia_valid & ATTR_MODE) {
 323                 umode_t mode = attr->ia_mode;
 324
 325                 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
 326                         mode &= ~S_ISGID;
 327                 set_acl_inode(fi, mode);
 328         }
 329 }
 330 #else
 331 #define __setattr_copy setattr_copy
 332 #endif
 333
 334 int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
 335 {
 336         struct inode *inode = dentry->d_inode;
 337         struct f2fs_inode_info *fi = F2FS_I(inode);
 338         int err;
 339
 340         err = inode_change_ok(inode, attr);
 341         if (err)
 342                 return err;
 343
 344         if ((attr->ia_valid & ATTR_SIZE) &&
 345                         attr->ia_size != i_size_read(inode)) {
 346                 truncate_setsize(inode, attr->ia_size);
 347                 f2fs_truncate(inode);
 348                 f2fs_balance_fs(F2FS_SB(inode->i_sb));
 349         }
 350
 351         __setattr_copy(inode, attr);
 352
 353         if (attr->ia_valid & ATTR_MODE) {
 354                 err = f2fs_acl_chmod(inode);
 355                 if (err || is_inode_flag_set(fi, FI_ACL_MODE)) {
 356                         inode->i_mode = fi->i_acl_mode;
 357                         clear_inode_flag(fi, FI_ACL_MODE);
 358                 }
 359         }
 360
 361         mark_inode_dirty(inode);
 362         return err;
 363 }
 364
 365 const struct inode_operations f2fs_file_inode_operations = {
 366         .getattr        = f2fs_getattr,
 367         .setattr        = f2fs_setattr,
 368         .get_acl        = f2fs_get_acl,
 369 #ifdef CONFIG_F2FS_FS_XATTR
 370         .setxattr       = generic_setxattr,
 371         .getxattr       = generic_getxattr,
 372         .listxattr      = f2fs_listxattr,
 373         .removexattr    = generic_removexattr,
 374 #endif
 375 };
 376
 377 static void fill_zero(struct inode *inode, pgoff_t index,
 378                                         loff_t start, loff_t len)
 379 {
 380         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
 381         struct page *page;
 382         int ilock;
 383
 384         if (!len)
 385                 return;
 386
 387         f2fs_balance_fs(sbi);
 388
 389         ilock = mutex_lock_op(sbi);
 390         page = get_new_data_page(inode, NULL, index, false);
 391         mutex_unlock_op(sbi, ilock);
 392
 393         if (!IS_ERR(page)) {
 394                 wait_on_page_writeback(page);
 395                 zero_user(page, start, len);
 396                 set_page_dirty(page);
 397                 f2fs_put_page(page, 1);
 398         }
 399 }
 400
 401 int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
 402 {
 403         pgoff_t index;
 404         int err;
 405
 406         for (index = pg_start; index < pg_end; index++) {
 407                 struct dnode_of_data dn;
 408
 409                 set_new_dnode(&dn, inode, NULL, NULL, 0);
 410                 err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
 411                 if (err) {
 412                         if (err == -ENOENT)
 413                                 continue;
 414                         return err;
 415                 }
 416
 417                 if (dn.data_blkaddr != NULL_ADDR)
 418                         truncate_data_blocks_range(&dn, 1);
 419                 f2fs_put_dnode(&dn);
 420         }
 421         return 0;
 422 }
 423
 424 static int punch_hole(struct inode *inode, loff_t offset, loff_t len, int mode)
 425 {
 426         pgoff_t pg_start, pg_end;
 427         loff_t off_start, off_end;
 428         int ret = 0;
 429
 430         pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT;
 431         pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT;
 432
 433         off_start = offset & (PAGE_CACHE_SIZE - 1);
 434         off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
 435
 436         if (pg_start == pg_end) {
 437                 fill_zero(inode, pg_start, off_start,
 438                                                 off_end - off_start);
 439         } else {
 440                 if (off_start)
 441                         fill_zero(inode, pg_start++, off_start,
 442                                         PAGE_CACHE_SIZE - off_start);
 443                 if (off_end)
 444                         fill_zero(inode, pg_end, 0, off_end);
 445
 446                 if (pg_start < pg_end) {
 447                         struct address_space *mapping = inode->i_mapping;
 448                         loff_t blk_start, blk_end;
 449                         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
 450                         int ilock;
 451
 452                         f2fs_balance_fs(sbi);
 453
 454                         blk_start = pg_start << PAGE_CACHE_SHIFT;
 455                         blk_end = pg_end << PAGE_CACHE_SHIFT;
 456                         truncate_inode_pages_range(mapping, blk_start,
 457                                         blk_end - 1);
 458
 459                         ilock = mutex_lock_op(sbi);
 460                         ret = truncate_hole(inode, pg_start, pg_end);
 461                         mutex_unlock_op(sbi, ilock);
 462                 }
 463         }
 464
 465         if (!(mode & FALLOC_FL_KEEP_SIZE) &&
 466                 i_size_read(inode) <= (offset + len)) {
 467                 i_size_write(inode, offset);
 468                 mark_inode_dirty(inode);
 469         }
 470
 471         return ret;
 472 }
 473
 474 static int expand_inode_data(struct inode *inode, loff_t offset,
 475                                         loff_t len, int mode)
 476 {
 477         struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
 478         pgoff_t index, pg_start, pg_end;
 479         loff_t new_size = i_size_read(inode);
 480         loff_t off_start, off_end;
 481         int ret = 0;
 482
 483         ret = inode_newsize_ok(inode, (len + offset));
 484         if (ret)
 485                 return ret;
 486
 487         pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT;
 488         pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT;
 489
 490         off_start = offset & (PAGE_CACHE_SIZE - 1);
 491         off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
 492
 493         for (index = pg_start; index <= pg_end; index++) {
 494                 struct dnode_of_data dn;
 495                 int ilock;
 496
 497                 ilock = mutex_lock_op(sbi);
 498                 set_new_dnode(&dn, inode, NULL, NULL, 0);
 499                 ret = get_dnode_of_data(&dn, index, ALLOC_NODE);
 500                 if (ret) {
 501                         mutex_unlock_op(sbi, ilock);
 502                         break;
 503                 }
 504
 505                 if (dn.data_blkaddr == NULL_ADDR) {
 506                         ret = reserve_new_block(&dn);
 507                         if (ret) {
 508                                 f2fs_put_dnode(&dn);
 509                                 mutex_unlock_op(sbi, ilock);
 510                                 break;
 511                         }
 512                 }
 513                 f2fs_put_dnode(&dn);
 514                 mutex_unlock_op(sbi, ilock);
 515
 516                 if (pg_start == pg_end)
 517                         new_size = offset + len;
 518                 else if (index == pg_start && off_start)
 519                         new_size = (index + 1) << PAGE_CACHE_SHIFT;
 520                 else if (index == pg_end)
 521                         new_size = (index << PAGE_CACHE_SHIFT) + off_end;
 522                 else
 523                         new_size += PAGE_CACHE_SIZE;
 524         }
 525
 526         if (!(mode & FALLOC_FL_KEEP_SIZE) &&
 527                 i_size_read(inode) < new_size) {
 528                 i_size_write(inode, new_size);
 529                 mark_inode_dirty(inode);
 530         }
 531
 532         return ret;
 533 }
 534
 535 static long f2fs_fallocate(struct file *file, int mode,
 536                                 loff_t offset, loff_t len)
 537 {
 538         struct inode *inode = file_inode(file);
 539         long ret;
 540
 541         if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
 542                 return -EOPNOTSUPP;
 543
 544         if (mode & FALLOC_FL_PUNCH_HOLE)
 545                 ret = punch_hole(inode, offset, len, mode);
 546         else
 547                 ret = expand_inode_data(inode, offset, len, mode);
 548
 549         if (!ret) {
 550                 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 551                 mark_inode_dirty(inode);
 552         }
 553         trace_f2fs_fallocate(inode, mode, offset, len, ret);
 554         return ret;
 555 }
 556
 557 #define F2FS_REG_FLMASK         (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
 558 #define F2FS_OTHER_FLMASK       (FS_NODUMP_FL | FS_NOATIME_FL)
 559
 560 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
 561 {
 562         if (S_ISDIR(mode))
 563                 return flags;
 564         else if (S_ISREG(mode))
 565                 return flags & F2FS_REG_FLMASK;
 566         else
 567                 return flags & F2FS_OTHER_FLMASK;
 568 }
 569
 570 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 571 {
 572         struct inode *inode = file_inode(filp);
 573         struct f2fs_inode_info *fi = F2FS_I(inode);
 574         unsigned int flags;
 575         int ret;
 576
 577         switch (cmd) {
 578         case FS_IOC_GETFLAGS:
 579                 flags = fi->i_flags & FS_FL_USER_VISIBLE;
 580                 return put_user(flags, (int __user *) arg);
 581         case FS_IOC_SETFLAGS:
 582         {
 583                 unsigned int oldflags;
 584
 585                 ret = mnt_want_write_file(filp);
 586                 if (ret)
 587                         return ret;
 588
 589                 if (!inode_owner_or_capable(inode)) {
 590                         ret = -EACCES;
 591                         goto out;
 592                 }
 593
 594                 if (get_user(flags, (int __user *) arg)) {
 595                         ret = -EFAULT;
 596                         goto out;
 597                 }
 598
 599                 flags = f2fs_mask_flags(inode->i_mode, flags);
 600
 601                 mutex_lock(&inode->i_mutex);
 602
 603                 oldflags = fi->i_flags;
 604
 605                 if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
 606                         if (!capable(CAP_LINUX_IMMUTABLE)) {
 607                                 mutex_unlock(&inode->i_mutex);
 608                                 ret = -EPERM;
 609                                 goto out;
 610                         }
 611                 }
 612
 613                 flags = flags & FS_FL_USER_MODIFIABLE;
 614                 flags |= oldflags & ~FS_FL_USER_MODIFIABLE;
 615                 fi->i_flags = flags;
 616                 mutex_unlock(&inode->i_mutex);
 617
 618                 f2fs_set_inode_flags(inode);
 619                 inode->i_ctime = CURRENT_TIME;
 620                 mark_inode_dirty(inode);
 621 out:
 622                 mnt_drop_write_file(filp);
 623                 return ret;
 624         }
 625         default:
 626                 return -ENOTTY;
 627         }
 628 }
 629
 630 #ifdef CONFIG_COMPAT
 631 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 632 {
 633         switch (cmd) {
 634         case F2FS_IOC32_GETFLAGS:
 635                 cmd = F2FS_IOC_GETFLAGS;
 636                 break;
 637         case F2FS_IOC32_SETFLAGS:
 638                 cmd = F2FS_IOC_SETFLAGS;
 639                 break;
 640         default:
 641                 return -ENOIOCTLCMD;
 642         }
 643         return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
 644 }
 645 #endif
 646
 647 const struct file_operations f2fs_file_operations = {
 648         .llseek         = generic_file_llseek,
 649         .read           = do_sync_read,
 650         .write          = do_sync_write,
 651         .aio_read       = generic_file_aio_read,
 652         .aio_write      = generic_file_aio_write,
 653         .open           = generic_file_open,
 654         .mmap           = f2fs_file_mmap,
 655         .fsync          = f2fs_sync_file,
 656         .fallocate      = f2fs_fallocate,
 657         .unlocked_ioctl = f2fs_ioctl,
 658 #ifdef CONFIG_COMPAT
 659         .compat_ioctl   = f2fs_compat_ioctl,
 660 #endif
 661         .splice_read    = generic_file_splice_read,
 662         .splice_write   = generic_file_splice_write,
 663 };