4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
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.
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 #include <linux/pagevec.h>
29 #include <trace/events/f2fs.h>
31 static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma,
34 struct page *page = vmf->page;
35 struct inode *inode = file_inode(vma->vm_file);
36 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
37 struct dnode_of_data dn;
43 sb_start_pagefault(inode->i_sb);
45 /* force to convert with normal data indices */
46 err = f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1, page);
50 /* block allocation */
53 /* check inline_data */
54 ipage = get_node_page(sbi, inode->i_ino);
60 if (f2fs_has_inline_data(inode)) {
61 f2fs_put_page(ipage, 1);
66 set_new_dnode(&dn, inode, ipage, NULL, 0);
67 err = f2fs_reserve_block(&dn, page->index);
75 file_update_time(vma->vm_file);
77 if (unlikely(page->mapping != inode->i_mapping ||
78 page_offset(page) > i_size_read(inode) ||
79 !PageUptodate(page))) {
86 * check to see if the page is mapped already (no holes)
88 if (PageMappedToDisk(page))
91 /* page is wholly or partially inside EOF */
92 if (((page->index + 1) << PAGE_CACHE_SHIFT) > i_size_read(inode)) {
94 offset = i_size_read(inode) & ~PAGE_CACHE_MASK;
95 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
98 SetPageUptodate(page);
100 trace_f2fs_vm_page_mkwrite(page, DATA);
103 f2fs_wait_on_page_writeback(page, DATA);
105 sb_end_pagefault(inode->i_sb);
106 return block_page_mkwrite_return(err);
109 static const struct vm_operations_struct f2fs_file_vm_ops = {
110 .fault = filemap_fault,
111 .map_pages = filemap_map_pages,
112 .page_mkwrite = f2fs_vm_page_mkwrite,
113 .remap_pages = generic_file_remap_pages,
116 static int get_parent_ino(struct inode *inode, nid_t *pino)
118 struct dentry *dentry;
120 inode = igrab(inode);
121 dentry = d_find_any_alias(inode);
126 if (update_dent_inode(inode, &dentry->d_name)) {
131 *pino = parent_ino(dentry);
136 static inline bool need_do_checkpoint(struct inode *inode)
138 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
139 bool need_cp = false;
141 if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
143 else if (file_wrong_pino(inode))
145 else if (!space_for_roll_forward(sbi))
147 else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
149 else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi)))
155 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
157 struct inode *inode = file->f_mapping->host;
158 struct f2fs_inode_info *fi = F2FS_I(inode);
159 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
160 nid_t ino = inode->i_ino;
162 bool need_cp = false;
163 struct writeback_control wbc = {
164 .sync_mode = WB_SYNC_ALL,
165 .nr_to_write = LONG_MAX,
169 if (unlikely(f2fs_readonly(inode->i_sb)))
172 trace_f2fs_sync_file_enter(inode);
174 /* if fdatasync is triggered, let's do in-place-update */
175 if (get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
176 set_inode_flag(fi, FI_NEED_IPU);
177 ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
178 clear_inode_flag(fi, FI_NEED_IPU);
181 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
186 * if there is no written data, don't waste time to write recovery info.
188 if (!is_inode_flag_set(fi, FI_APPEND_WRITE) &&
189 !exist_written_data(sbi, ino, APPEND_INO)) {
190 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
192 /* But we need to avoid that there are some inode updates */
193 if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) {
199 if (is_inode_flag_set(fi, FI_UPDATE_WRITE) ||
200 exist_written_data(sbi, ino, UPDATE_INO))
205 /* guarantee free sections for fsync */
206 f2fs_balance_fs(sbi);
209 * Both of fdatasync() and fsync() are able to be recovered from
212 down_read(&fi->i_sem);
213 need_cp = need_do_checkpoint(inode);
219 /* all the dirty node pages should be flushed for POR */
220 ret = f2fs_sync_fs(inode->i_sb, 1);
222 down_write(&fi->i_sem);
223 F2FS_I(inode)->xattr_ver = 0;
224 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
225 get_parent_ino(inode, &pino)) {
226 F2FS_I(inode)->i_pino = pino;
227 file_got_pino(inode);
228 up_write(&fi->i_sem);
229 mark_inode_dirty_sync(inode);
230 ret = f2fs_write_inode(inode, NULL);
234 up_write(&fi->i_sem);
238 sync_node_pages(sbi, ino, &wbc);
240 if (need_inode_block_update(sbi, ino)) {
241 mark_inode_dirty_sync(inode);
242 ret = f2fs_write_inode(inode, NULL);
248 ret = wait_on_node_pages_writeback(sbi, ino);
252 /* once recovery info is written, don't need to tack this */
253 remove_dirty_inode(sbi, ino, APPEND_INO);
254 clear_inode_flag(fi, FI_APPEND_WRITE);
256 remove_dirty_inode(sbi, ino, UPDATE_INO);
257 clear_inode_flag(fi, FI_UPDATE_WRITE);
258 ret = f2fs_issue_flush(F2FS_I_SB(inode));
261 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
265 static pgoff_t __get_first_dirty_index(struct address_space *mapping,
266 pgoff_t pgofs, int whence)
271 if (whence != SEEK_DATA)
274 /* find first dirty page index */
275 pagevec_init(&pvec, 0);
276 nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs,
277 PAGECACHE_TAG_DIRTY, 1);
278 pgofs = nr_pages ? pvec.pages[0]->index : LONG_MAX;
279 pagevec_release(&pvec);
283 static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
288 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
289 (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR))
293 if (blkaddr == NULL_ADDR)
300 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
302 struct inode *inode = file->f_mapping->host;
303 loff_t maxbytes = inode->i_sb->s_maxbytes;
304 struct dnode_of_data dn;
305 pgoff_t pgofs, end_offset, dirty;
306 loff_t data_ofs = offset;
310 mutex_lock(&inode->i_mutex);
312 isize = i_size_read(inode);
316 /* handle inline data case */
317 if (f2fs_has_inline_data(inode)) {
318 if (whence == SEEK_HOLE)
323 pgofs = (pgoff_t)(offset >> PAGE_CACHE_SHIFT);
325 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
327 for (; data_ofs < isize; data_ofs = pgofs << PAGE_CACHE_SHIFT) {
328 set_new_dnode(&dn, inode, NULL, NULL, 0);
329 err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA);
330 if (err && err != -ENOENT) {
332 } else if (err == -ENOENT) {
333 /* direct node does not exists */
334 if (whence == SEEK_DATA) {
335 pgofs = PGOFS_OF_NEXT_DNODE(pgofs,
343 end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode));
345 /* find data/hole in dnode block */
346 for (; dn.ofs_in_node < end_offset;
347 dn.ofs_in_node++, pgofs++,
348 data_ofs = pgofs << PAGE_CACHE_SHIFT) {
350 blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node);
352 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
360 if (whence == SEEK_DATA)
363 if (whence == SEEK_HOLE && data_ofs > isize)
365 mutex_unlock(&inode->i_mutex);
366 return vfs_setpos(file, data_ofs, maxbytes);
368 mutex_unlock(&inode->i_mutex);
372 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
374 struct inode *inode = file->f_mapping->host;
375 loff_t maxbytes = inode->i_sb->s_maxbytes;
381 return generic_file_llseek_size(file, offset, whence,
382 maxbytes, i_size_read(inode));
387 return f2fs_seek_block(file, offset, whence);
393 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
396 vma->vm_ops = &f2fs_file_vm_ops;
400 int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
402 int nr_free = 0, ofs = dn->ofs_in_node;
403 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
404 struct f2fs_node *raw_node;
407 raw_node = F2FS_NODE(dn->node_page);
408 addr = blkaddr_in_node(raw_node) + ofs;
410 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
411 block_t blkaddr = le32_to_cpu(*addr);
412 if (blkaddr == NULL_ADDR)
415 update_extent_cache(NULL_ADDR, dn);
416 invalidate_blocks(sbi, blkaddr);
420 dec_valid_block_count(sbi, dn->inode, nr_free);
421 set_page_dirty(dn->node_page);
424 dn->ofs_in_node = ofs;
426 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
427 dn->ofs_in_node, nr_free);
431 void truncate_data_blocks(struct dnode_of_data *dn)
433 truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
436 static void truncate_partial_data_page(struct inode *inode, u64 from)
438 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
441 if (f2fs_has_inline_data(inode))
442 return truncate_inline_data(inode, from);
447 page = find_data_page(inode, from >> PAGE_CACHE_SHIFT, false);
452 if (unlikely(!PageUptodate(page) ||
453 page->mapping != inode->i_mapping))
456 f2fs_wait_on_page_writeback(page, DATA);
457 zero_user(page, offset, PAGE_CACHE_SIZE - offset);
458 set_page_dirty(page);
461 f2fs_put_page(page, 1);
464 int truncate_blocks(struct inode *inode, u64 from, bool lock)
466 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
467 unsigned int blocksize = inode->i_sb->s_blocksize;
468 struct dnode_of_data dn;
470 int count = 0, err = 0;
472 trace_f2fs_truncate_blocks_enter(inode, from);
474 if (f2fs_has_inline_data(inode))
477 free_from = (pgoff_t)
478 ((from + blocksize - 1) >> (sbi->log_blocksize));
483 set_new_dnode(&dn, inode, NULL, NULL, 0);
484 err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE);
490 trace_f2fs_truncate_blocks_exit(inode, err);
494 /* writepage can convert inline_data under get_donde_of_data */
495 if (f2fs_has_inline_data(inode)) {
500 count = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode));
502 count -= dn.ofs_in_node;
503 f2fs_bug_on(sbi, count < 0);
505 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
506 truncate_data_blocks_range(&dn, count);
512 err = truncate_inode_blocks(inode, free_from);
517 /* lastly zero out the first data page */
518 truncate_partial_data_page(inode, from);
520 trace_f2fs_truncate_blocks_exit(inode, err);
524 void f2fs_truncate(struct inode *inode)
526 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
527 S_ISLNK(inode->i_mode)))
530 trace_f2fs_truncate(inode);
532 if (!truncate_blocks(inode, i_size_read(inode), true)) {
533 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
534 mark_inode_dirty(inode);
538 int f2fs_getattr(struct vfsmount *mnt,
539 struct dentry *dentry, struct kstat *stat)
541 struct inode *inode = dentry->d_inode;
542 generic_fillattr(inode, stat);
547 #ifdef CONFIG_F2FS_FS_POSIX_ACL
548 static void __setattr_copy(struct inode *inode, const struct iattr *attr)
550 struct f2fs_inode_info *fi = F2FS_I(inode);
551 unsigned int ia_valid = attr->ia_valid;
553 if (ia_valid & ATTR_UID)
554 inode->i_uid = attr->ia_uid;
555 if (ia_valid & ATTR_GID)
556 inode->i_gid = attr->ia_gid;
557 if (ia_valid & ATTR_ATIME)
558 inode->i_atime = timespec_trunc(attr->ia_atime,
559 inode->i_sb->s_time_gran);
560 if (ia_valid & ATTR_MTIME)
561 inode->i_mtime = timespec_trunc(attr->ia_mtime,
562 inode->i_sb->s_time_gran);
563 if (ia_valid & ATTR_CTIME)
564 inode->i_ctime = timespec_trunc(attr->ia_ctime,
565 inode->i_sb->s_time_gran);
566 if (ia_valid & ATTR_MODE) {
567 umode_t mode = attr->ia_mode;
569 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
571 set_acl_inode(fi, mode);
575 #define __setattr_copy setattr_copy
578 int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
580 struct inode *inode = dentry->d_inode;
581 struct f2fs_inode_info *fi = F2FS_I(inode);
584 err = inode_change_ok(inode, attr);
588 if (attr->ia_valid & ATTR_SIZE) {
589 err = f2fs_convert_inline_data(inode, attr->ia_size, NULL);
593 if (attr->ia_size != i_size_read(inode)) {
594 truncate_setsize(inode, attr->ia_size);
595 f2fs_truncate(inode);
596 f2fs_balance_fs(F2FS_I_SB(inode));
599 * giving a chance to truncate blocks past EOF which
600 * are fallocated with FALLOC_FL_KEEP_SIZE.
602 f2fs_truncate(inode);
606 __setattr_copy(inode, attr);
608 if (attr->ia_valid & ATTR_MODE) {
609 err = posix_acl_chmod(inode, get_inode_mode(inode));
610 if (err || is_inode_flag_set(fi, FI_ACL_MODE)) {
611 inode->i_mode = fi->i_acl_mode;
612 clear_inode_flag(fi, FI_ACL_MODE);
616 mark_inode_dirty(inode);
620 const struct inode_operations f2fs_file_inode_operations = {
621 .getattr = f2fs_getattr,
622 .setattr = f2fs_setattr,
623 .get_acl = f2fs_get_acl,
624 .set_acl = f2fs_set_acl,
625 #ifdef CONFIG_F2FS_FS_XATTR
626 .setxattr = generic_setxattr,
627 .getxattr = generic_getxattr,
628 .listxattr = f2fs_listxattr,
629 .removexattr = generic_removexattr,
631 .fiemap = f2fs_fiemap,
634 static void fill_zero(struct inode *inode, pgoff_t index,
635 loff_t start, loff_t len)
637 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
643 f2fs_balance_fs(sbi);
646 page = get_new_data_page(inode, NULL, index, false);
650 f2fs_wait_on_page_writeback(page, DATA);
651 zero_user(page, start, len);
652 set_page_dirty(page);
653 f2fs_put_page(page, 1);
657 int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
662 for (index = pg_start; index < pg_end; index++) {
663 struct dnode_of_data dn;
665 set_new_dnode(&dn, inode, NULL, NULL, 0);
666 err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
673 if (dn.data_blkaddr != NULL_ADDR)
674 truncate_data_blocks_range(&dn, 1);
680 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
682 pgoff_t pg_start, pg_end;
683 loff_t off_start, off_end;
686 if (!S_ISREG(inode->i_mode))
689 /* skip punching hole beyond i_size */
690 if (offset >= inode->i_size)
693 ret = f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1, NULL);
697 pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT;
698 pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT;
700 off_start = offset & (PAGE_CACHE_SIZE - 1);
701 off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
703 if (pg_start == pg_end) {
704 fill_zero(inode, pg_start, off_start,
705 off_end - off_start);
708 fill_zero(inode, pg_start++, off_start,
709 PAGE_CACHE_SIZE - off_start);
711 fill_zero(inode, pg_end, 0, off_end);
713 if (pg_start < pg_end) {
714 struct address_space *mapping = inode->i_mapping;
715 loff_t blk_start, blk_end;
716 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
718 f2fs_balance_fs(sbi);
720 blk_start = pg_start << PAGE_CACHE_SHIFT;
721 blk_end = pg_end << PAGE_CACHE_SHIFT;
722 truncate_inode_pages_range(mapping, blk_start,
726 ret = truncate_hole(inode, pg_start, pg_end);
734 static int expand_inode_data(struct inode *inode, loff_t offset,
735 loff_t len, int mode)
737 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
738 pgoff_t index, pg_start, pg_end;
739 loff_t new_size = i_size_read(inode);
740 loff_t off_start, off_end;
743 f2fs_balance_fs(sbi);
745 ret = inode_newsize_ok(inode, (len + offset));
749 ret = f2fs_convert_inline_data(inode, offset + len, NULL);
753 pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT;
754 pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT;
756 off_start = offset & (PAGE_CACHE_SIZE - 1);
757 off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
761 for (index = pg_start; index <= pg_end; index++) {
762 struct dnode_of_data dn;
764 if (index == pg_end && !off_end)
767 set_new_dnode(&dn, inode, NULL, NULL, 0);
768 ret = f2fs_reserve_block(&dn, index);
772 if (pg_start == pg_end)
773 new_size = offset + len;
774 else if (index == pg_start && off_start)
775 new_size = (index + 1) << PAGE_CACHE_SHIFT;
776 else if (index == pg_end)
777 new_size = (index << PAGE_CACHE_SHIFT) + off_end;
779 new_size += PAGE_CACHE_SIZE;
782 if (!(mode & FALLOC_FL_KEEP_SIZE) &&
783 i_size_read(inode) < new_size) {
784 i_size_write(inode, new_size);
785 mark_inode_dirty(inode);
786 update_inode_page(inode);
793 static long f2fs_fallocate(struct file *file, int mode,
794 loff_t offset, loff_t len)
796 struct inode *inode = file_inode(file);
799 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
802 mutex_lock(&inode->i_mutex);
804 if (mode & FALLOC_FL_PUNCH_HOLE)
805 ret = punch_hole(inode, offset, len);
807 ret = expand_inode_data(inode, offset, len, mode);
810 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
811 mark_inode_dirty(inode);
814 mutex_unlock(&inode->i_mutex);
816 trace_f2fs_fallocate(inode, mode, offset, len, ret);
820 #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
821 #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL)
823 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
827 else if (S_ISREG(mode))
828 return flags & F2FS_REG_FLMASK;
830 return flags & F2FS_OTHER_FLMASK;
833 static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
835 struct inode *inode = file_inode(filp);
836 struct f2fs_inode_info *fi = F2FS_I(inode);
837 unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE;
838 return put_user(flags, (int __user *)arg);
841 static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
843 struct inode *inode = file_inode(filp);
844 struct f2fs_inode_info *fi = F2FS_I(inode);
845 unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE;
846 unsigned int oldflags;
849 ret = mnt_want_write_file(filp);
853 if (!inode_owner_or_capable(inode)) {
858 if (get_user(flags, (int __user *)arg)) {
863 flags = f2fs_mask_flags(inode->i_mode, flags);
865 mutex_lock(&inode->i_mutex);
867 oldflags = fi->i_flags;
869 if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
870 if (!capable(CAP_LINUX_IMMUTABLE)) {
871 mutex_unlock(&inode->i_mutex);
877 flags = flags & FS_FL_USER_MODIFIABLE;
878 flags |= oldflags & ~FS_FL_USER_MODIFIABLE;
880 mutex_unlock(&inode->i_mutex);
882 f2fs_set_inode_flags(inode);
883 inode->i_ctime = CURRENT_TIME;
884 mark_inode_dirty(inode);
886 mnt_drop_write_file(filp);
890 static int f2fs_ioc_start_atomic_write(struct file *filp)
892 struct inode *inode = file_inode(filp);
893 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
895 if (!inode_owner_or_capable(inode))
898 f2fs_balance_fs(sbi);
900 set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
902 return f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1, NULL);
905 static int f2fs_ioc_commit_atomic_write(struct file *filp)
907 struct inode *inode = file_inode(filp);
910 if (!inode_owner_or_capable(inode))
913 if (f2fs_is_volatile_file(inode))
916 ret = mnt_want_write_file(filp);
920 if (f2fs_is_atomic_file(inode))
921 commit_inmem_pages(inode, false);
923 ret = f2fs_sync_file(filp, 0, LONG_MAX, 0);
924 mnt_drop_write_file(filp);
928 static int f2fs_ioc_start_volatile_write(struct file *filp)
930 struct inode *inode = file_inode(filp);
932 if (!inode_owner_or_capable(inode))
935 set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
939 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
941 struct inode *inode = file_inode(filp);
942 struct super_block *sb = inode->i_sb;
943 struct request_queue *q = bdev_get_queue(sb->s_bdev);
944 struct fstrim_range range;
947 if (!capable(CAP_SYS_ADMIN))
950 if (!blk_queue_discard(q))
953 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
957 range.minlen = max((unsigned int)range.minlen,
958 q->limits.discard_granularity);
959 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
963 if (copy_to_user((struct fstrim_range __user *)arg, &range,
969 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
972 case F2FS_IOC_GETFLAGS:
973 return f2fs_ioc_getflags(filp, arg);
974 case F2FS_IOC_SETFLAGS:
975 return f2fs_ioc_setflags(filp, arg);
976 case F2FS_IOC_START_ATOMIC_WRITE:
977 return f2fs_ioc_start_atomic_write(filp);
978 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
979 return f2fs_ioc_commit_atomic_write(filp);
980 case F2FS_IOC_START_VOLATILE_WRITE:
981 return f2fs_ioc_start_volatile_write(filp);
983 return f2fs_ioc_fitrim(filp, arg);
990 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
993 case F2FS_IOC32_GETFLAGS:
994 cmd = F2FS_IOC_GETFLAGS;
996 case F2FS_IOC32_SETFLAGS:
997 cmd = F2FS_IOC_SETFLAGS;
1000 return -ENOIOCTLCMD;
1002 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
1006 const struct file_operations f2fs_file_operations = {
1007 .llseek = f2fs_llseek,
1008 .read = new_sync_read,
1009 .write = new_sync_write,
1010 .read_iter = generic_file_read_iter,
1011 .write_iter = generic_file_write_iter,
1012 .open = generic_file_open,
1013 .mmap = f2fs_file_mmap,
1014 .fsync = f2fs_sync_file,
1015 .fallocate = f2fs_fallocate,
1016 .unlocked_ioctl = f2fs_ioctl,
1017 #ifdef CONFIG_COMPAT
1018 .compat_ioctl = f2fs_compat_ioctl,
1020 .splice_read = generic_file_splice_read,
1021 .splice_write = iter_file_splice_write,