1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
9 #include <linux/f2fs_fs.h>
10 #include <linux/stat.h>
11 #include <linux/buffer_head.h>
12 #include <linux/writeback.h>
13 #include <linux/blkdev.h>
14 #include <linux/falloc.h>
15 #include <linux/types.h>
16 #include <linux/compat.h>
17 #include <linux/uaccess.h>
18 #include <linux/mount.h>
19 #include <linux/pagevec.h>
20 #include <linux/uio.h>
21 #include <linux/uuid.h>
22 #include <linux/file.h>
23 #include <linux/nls.h>
32 #include <trace/events/f2fs.h>
34 static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
36 struct inode *inode = file_inode(vmf->vma->vm_file);
39 down_read(&F2FS_I(inode)->i_mmap_sem);
40 ret = filemap_fault(vmf);
41 up_read(&F2FS_I(inode)->i_mmap_sem);
43 trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
48 static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
50 struct page *page = vmf->page;
51 struct inode *inode = file_inode(vmf->vma->vm_file);
52 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
53 struct dnode_of_data dn;
56 if (unlikely(f2fs_cp_error(sbi))) {
61 if (!f2fs_is_checkpoint_ready(sbi)) {
66 /* should do out of any locked page */
67 f2fs_balance_fs(sbi, true);
69 sb_start_pagefault(inode->i_sb);
71 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
73 file_update_time(vmf->vma->vm_file);
74 down_read(&F2FS_I(inode)->i_mmap_sem);
76 if (unlikely(page->mapping != inode->i_mapping ||
77 page_offset(page) > i_size_read(inode) ||
78 !PageUptodate(page))) {
84 /* block allocation */
85 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
86 set_new_dnode(&dn, inode, NULL, NULL, 0);
87 err = f2fs_get_block(&dn, page->index);
89 __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
96 f2fs_wait_on_page_writeback(page, DATA, false, true);
98 /* wait for GCed page writeback via META_MAPPING */
99 f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
102 * check to see if the page is mapped already (no holes)
104 if (PageMappedToDisk(page))
107 /* page is wholly or partially inside EOF */
108 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
109 i_size_read(inode)) {
112 offset = i_size_read(inode) & ~PAGE_MASK;
113 zero_user_segment(page, offset, PAGE_SIZE);
115 set_page_dirty(page);
116 if (!PageUptodate(page))
117 SetPageUptodate(page);
119 f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
120 f2fs_update_time(sbi, REQ_TIME);
122 trace_f2fs_vm_page_mkwrite(page, DATA);
124 up_read(&F2FS_I(inode)->i_mmap_sem);
126 sb_end_pagefault(inode->i_sb);
128 return block_page_mkwrite_return(err);
131 static const struct vm_operations_struct f2fs_file_vm_ops = {
132 .fault = f2fs_filemap_fault,
133 .map_pages = filemap_map_pages,
134 .page_mkwrite = f2fs_vm_page_mkwrite,
137 static int get_parent_ino(struct inode *inode, nid_t *pino)
139 struct dentry *dentry;
141 inode = igrab(inode);
142 dentry = d_find_any_alias(inode);
147 *pino = parent_ino(dentry);
152 static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
154 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
155 enum cp_reason_type cp_reason = CP_NO_NEEDED;
157 if (!S_ISREG(inode->i_mode))
158 cp_reason = CP_NON_REGULAR;
159 else if (inode->i_nlink != 1)
160 cp_reason = CP_HARDLINK;
161 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
162 cp_reason = CP_SB_NEED_CP;
163 else if (file_wrong_pino(inode))
164 cp_reason = CP_WRONG_PINO;
165 else if (!f2fs_space_for_roll_forward(sbi))
166 cp_reason = CP_NO_SPC_ROLL;
167 else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
168 cp_reason = CP_NODE_NEED_CP;
169 else if (test_opt(sbi, FASTBOOT))
170 cp_reason = CP_FASTBOOT_MODE;
171 else if (F2FS_OPTION(sbi).active_logs == 2)
172 cp_reason = CP_SPEC_LOG_NUM;
173 else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
174 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
175 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
177 cp_reason = CP_RECOVER_DIR;
182 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
184 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
186 /* But we need to avoid that there are some inode updates */
187 if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
193 static void try_to_fix_pino(struct inode *inode)
195 struct f2fs_inode_info *fi = F2FS_I(inode);
198 down_write(&fi->i_sem);
199 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
200 get_parent_ino(inode, &pino)) {
201 f2fs_i_pino_write(inode, pino);
202 file_got_pino(inode);
204 up_write(&fi->i_sem);
207 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
208 int datasync, bool atomic)
210 struct inode *inode = file->f_mapping->host;
211 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
212 nid_t ino = inode->i_ino;
214 enum cp_reason_type cp_reason = 0;
215 struct writeback_control wbc = {
216 .sync_mode = WB_SYNC_ALL,
217 .nr_to_write = LONG_MAX,
220 unsigned int seq_id = 0;
222 if (unlikely(f2fs_readonly(inode->i_sb) ||
223 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
226 trace_f2fs_sync_file_enter(inode);
228 if (S_ISDIR(inode->i_mode))
231 /* if fdatasync is triggered, let's do in-place-update */
232 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
233 set_inode_flag(inode, FI_NEED_IPU);
234 ret = file_write_and_wait_range(file, start, end);
235 clear_inode_flag(inode, FI_NEED_IPU);
238 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
242 /* if the inode is dirty, let's recover all the time */
243 if (!f2fs_skip_inode_update(inode, datasync)) {
244 f2fs_write_inode(inode, NULL);
249 * if there is no written data, don't waste time to write recovery info.
251 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
252 !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
254 /* it may call write_inode just prior to fsync */
255 if (need_inode_page_update(sbi, ino))
258 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
259 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
265 * Both of fdatasync() and fsync() are able to be recovered from
268 down_read(&F2FS_I(inode)->i_sem);
269 cp_reason = need_do_checkpoint(inode);
270 up_read(&F2FS_I(inode)->i_sem);
273 /* all the dirty node pages should be flushed for POR */
274 ret = f2fs_sync_fs(inode->i_sb, 1);
277 * We've secured consistency through sync_fs. Following pino
278 * will be used only for fsynced inodes after checkpoint.
280 try_to_fix_pino(inode);
281 clear_inode_flag(inode, FI_APPEND_WRITE);
282 clear_inode_flag(inode, FI_UPDATE_WRITE);
286 atomic_inc(&sbi->wb_sync_req[NODE]);
287 ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
288 atomic_dec(&sbi->wb_sync_req[NODE]);
292 /* if cp_error was enabled, we should avoid infinite loop */
293 if (unlikely(f2fs_cp_error(sbi))) {
298 if (f2fs_need_inode_block_update(sbi, ino)) {
299 f2fs_mark_inode_dirty_sync(inode, true);
300 f2fs_write_inode(inode, NULL);
305 * If it's atomic_write, it's just fine to keep write ordering. So
306 * here we don't need to wait for node write completion, since we use
307 * node chain which serializes node blocks. If one of node writes are
308 * reordered, we can see simply broken chain, resulting in stopping
309 * roll-forward recovery. It means we'll recover all or none node blocks
313 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
318 /* once recovery info is written, don't need to tack this */
319 f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
320 clear_inode_flag(inode, FI_APPEND_WRITE);
322 if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
323 ret = f2fs_issue_flush(sbi, inode->i_ino);
325 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
326 clear_inode_flag(inode, FI_UPDATE_WRITE);
327 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
329 f2fs_update_time(sbi, REQ_TIME);
331 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
332 f2fs_trace_ios(NULL, 1);
336 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
338 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
340 return f2fs_do_sync_file(file, start, end, datasync, false);
343 static pgoff_t __get_first_dirty_index(struct address_space *mapping,
344 pgoff_t pgofs, int whence)
349 if (whence != SEEK_DATA)
352 /* find first dirty page index */
353 nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY,
362 static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr,
363 pgoff_t dirty, pgoff_t pgofs, int whence)
367 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
368 __is_valid_data_blkaddr(blkaddr))
372 if (blkaddr == NULL_ADDR)
379 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
381 struct inode *inode = file->f_mapping->host;
382 loff_t maxbytes = inode->i_sb->s_maxbytes;
383 struct dnode_of_data dn;
384 pgoff_t pgofs, end_offset, dirty;
385 loff_t data_ofs = offset;
391 isize = i_size_read(inode);
395 /* handle inline data case */
396 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
397 if (whence == SEEK_HOLE)
402 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
404 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
406 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
407 set_new_dnode(&dn, inode, NULL, NULL, 0);
408 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
409 if (err && err != -ENOENT) {
411 } else if (err == -ENOENT) {
412 /* direct node does not exists */
413 if (whence == SEEK_DATA) {
414 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
421 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
423 /* find data/hole in dnode block */
424 for (; dn.ofs_in_node < end_offset;
425 dn.ofs_in_node++, pgofs++,
426 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
429 blkaddr = datablock_addr(dn.inode,
430 dn.node_page, dn.ofs_in_node);
432 if (__is_valid_data_blkaddr(blkaddr) &&
433 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
434 blkaddr, DATA_GENERIC_ENHANCE)) {
439 if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty,
448 if (whence == SEEK_DATA)
451 if (whence == SEEK_HOLE && data_ofs > isize)
454 return vfs_setpos(file, data_ofs, maxbytes);
460 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
462 struct inode *inode = file->f_mapping->host;
463 loff_t maxbytes = inode->i_sb->s_maxbytes;
469 return generic_file_llseek_size(file, offset, whence,
470 maxbytes, i_size_read(inode));
475 return f2fs_seek_block(file, offset, whence);
481 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
483 struct inode *inode = file_inode(file);
486 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
489 /* we don't need to use inline_data strictly */
490 err = f2fs_convert_inline_inode(inode);
495 vma->vm_ops = &f2fs_file_vm_ops;
499 static int f2fs_file_open(struct inode *inode, struct file *filp)
501 int err = fscrypt_file_open(inode, filp);
506 err = fsverity_file_open(inode, filp);
510 filp->f_mode |= FMODE_NOWAIT;
512 return dquot_file_open(inode, filp);
515 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
517 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
518 struct f2fs_node *raw_node;
519 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
523 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
524 base = get_extra_isize(dn->inode);
526 raw_node = F2FS_NODE(dn->node_page);
527 addr = blkaddr_in_node(raw_node) + base + ofs;
529 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
530 block_t blkaddr = le32_to_cpu(*addr);
532 if (blkaddr == NULL_ADDR)
535 dn->data_blkaddr = NULL_ADDR;
536 f2fs_set_data_blkaddr(dn);
538 if (__is_valid_data_blkaddr(blkaddr) &&
539 !f2fs_is_valid_blkaddr(sbi, blkaddr,
540 DATA_GENERIC_ENHANCE))
543 f2fs_invalidate_blocks(sbi, blkaddr);
544 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
545 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
552 * once we invalidate valid blkaddr in range [ofs, ofs + count],
553 * we will invalidate all blkaddr in the whole range.
555 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
557 f2fs_update_extent_cache_range(dn, fofs, 0, len);
558 dec_valid_block_count(sbi, dn->inode, nr_free);
560 dn->ofs_in_node = ofs;
562 f2fs_update_time(sbi, REQ_TIME);
563 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
564 dn->ofs_in_node, nr_free);
567 void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
569 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
572 static int truncate_partial_data_page(struct inode *inode, u64 from,
575 loff_t offset = from & (PAGE_SIZE - 1);
576 pgoff_t index = from >> PAGE_SHIFT;
577 struct address_space *mapping = inode->i_mapping;
580 if (!offset && !cache_only)
584 page = find_lock_page(mapping, index);
585 if (page && PageUptodate(page))
587 f2fs_put_page(page, 1);
591 page = f2fs_get_lock_data_page(inode, index, true);
593 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
595 f2fs_wait_on_page_writeback(page, DATA, true, true);
596 zero_user(page, offset, PAGE_SIZE - offset);
598 /* An encrypted inode should have a key and truncate the last page. */
599 f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
601 set_page_dirty(page);
602 f2fs_put_page(page, 1);
606 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
608 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
609 struct dnode_of_data dn;
611 int count = 0, err = 0;
613 bool truncate_page = false;
615 trace_f2fs_truncate_blocks_enter(inode, from);
617 free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
619 if (free_from >= sbi->max_file_blocks)
625 ipage = f2fs_get_node_page(sbi, inode->i_ino);
627 err = PTR_ERR(ipage);
631 if (f2fs_has_inline_data(inode)) {
632 f2fs_truncate_inline_inode(inode, ipage, from);
633 f2fs_put_page(ipage, 1);
634 truncate_page = true;
638 set_new_dnode(&dn, inode, ipage, NULL, 0);
639 err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
646 count = ADDRS_PER_PAGE(dn.node_page, inode);
648 count -= dn.ofs_in_node;
649 f2fs_bug_on(sbi, count < 0);
651 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
652 f2fs_truncate_data_blocks_range(&dn, count);
658 err = f2fs_truncate_inode_blocks(inode, free_from);
663 /* lastly zero out the first data page */
665 err = truncate_partial_data_page(inode, from, truncate_page);
667 trace_f2fs_truncate_blocks_exit(inode, err);
671 int f2fs_truncate(struct inode *inode)
675 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
678 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
679 S_ISLNK(inode->i_mode)))
682 trace_f2fs_truncate(inode);
684 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
685 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
689 /* we should check inline_data size */
690 if (!f2fs_may_inline_data(inode)) {
691 err = f2fs_convert_inline_inode(inode);
696 err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
700 inode->i_mtime = inode->i_ctime = current_time(inode);
701 f2fs_mark_inode_dirty_sync(inode, false);
705 int f2fs_getattr(const struct path *path, struct kstat *stat,
706 u32 request_mask, unsigned int query_flags)
708 struct inode *inode = d_inode(path->dentry);
709 struct f2fs_inode_info *fi = F2FS_I(inode);
710 struct f2fs_inode *ri;
713 if (f2fs_has_extra_attr(inode) &&
714 f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
715 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
716 stat->result_mask |= STATX_BTIME;
717 stat->btime.tv_sec = fi->i_crtime.tv_sec;
718 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
722 if (flags & F2FS_APPEND_FL)
723 stat->attributes |= STATX_ATTR_APPEND;
724 if (IS_ENCRYPTED(inode))
725 stat->attributes |= STATX_ATTR_ENCRYPTED;
726 if (flags & F2FS_IMMUTABLE_FL)
727 stat->attributes |= STATX_ATTR_IMMUTABLE;
728 if (flags & F2FS_NODUMP_FL)
729 stat->attributes |= STATX_ATTR_NODUMP;
730 if (IS_VERITY(inode))
731 stat->attributes |= STATX_ATTR_VERITY;
733 stat->attributes_mask |= (STATX_ATTR_APPEND |
734 STATX_ATTR_ENCRYPTED |
735 STATX_ATTR_IMMUTABLE |
739 generic_fillattr(inode, stat);
741 /* we need to show initial sectors used for inline_data/dentries */
742 if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
743 f2fs_has_inline_dentry(inode))
744 stat->blocks += (stat->size + 511) >> 9;
749 #ifdef CONFIG_F2FS_FS_POSIX_ACL
750 static void __setattr_copy(struct inode *inode, const struct iattr *attr)
752 unsigned int ia_valid = attr->ia_valid;
754 if (ia_valid & ATTR_UID)
755 inode->i_uid = attr->ia_uid;
756 if (ia_valid & ATTR_GID)
757 inode->i_gid = attr->ia_gid;
758 if (ia_valid & ATTR_ATIME) {
759 inode->i_atime = timestamp_truncate(attr->ia_atime,
762 if (ia_valid & ATTR_MTIME) {
763 inode->i_mtime = timestamp_truncate(attr->ia_mtime,
766 if (ia_valid & ATTR_CTIME) {
767 inode->i_ctime = timestamp_truncate(attr->ia_ctime,
770 if (ia_valid & ATTR_MODE) {
771 umode_t mode = attr->ia_mode;
773 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
775 set_acl_inode(inode, mode);
779 #define __setattr_copy setattr_copy
782 int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
784 struct inode *inode = d_inode(dentry);
787 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
790 err = setattr_prepare(dentry, attr);
794 err = fscrypt_prepare_setattr(dentry, attr);
798 err = fsverity_prepare_setattr(dentry, attr);
802 if (is_quota_modification(inode, attr)) {
803 err = dquot_initialize(inode);
807 if ((attr->ia_valid & ATTR_UID &&
808 !uid_eq(attr->ia_uid, inode->i_uid)) ||
809 (attr->ia_valid & ATTR_GID &&
810 !gid_eq(attr->ia_gid, inode->i_gid))) {
811 f2fs_lock_op(F2FS_I_SB(inode));
812 err = dquot_transfer(inode, attr);
814 set_sbi_flag(F2FS_I_SB(inode),
815 SBI_QUOTA_NEED_REPAIR);
816 f2fs_unlock_op(F2FS_I_SB(inode));
820 * update uid/gid under lock_op(), so that dquot and inode can
821 * be updated atomically.
823 if (attr->ia_valid & ATTR_UID)
824 inode->i_uid = attr->ia_uid;
825 if (attr->ia_valid & ATTR_GID)
826 inode->i_gid = attr->ia_gid;
827 f2fs_mark_inode_dirty_sync(inode, true);
828 f2fs_unlock_op(F2FS_I_SB(inode));
831 if (attr->ia_valid & ATTR_SIZE) {
832 loff_t old_size = i_size_read(inode);
834 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
836 * should convert inline inode before i_size_write to
837 * keep smaller than inline_data size with inline flag.
839 err = f2fs_convert_inline_inode(inode);
844 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
845 down_write(&F2FS_I(inode)->i_mmap_sem);
847 truncate_setsize(inode, attr->ia_size);
849 if (attr->ia_size <= old_size)
850 err = f2fs_truncate(inode);
852 * do not trim all blocks after i_size if target size is
853 * larger than i_size.
855 up_write(&F2FS_I(inode)->i_mmap_sem);
856 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
860 down_write(&F2FS_I(inode)->i_sem);
861 inode->i_mtime = inode->i_ctime = current_time(inode);
862 F2FS_I(inode)->last_disk_size = i_size_read(inode);
863 up_write(&F2FS_I(inode)->i_sem);
866 __setattr_copy(inode, attr);
868 if (attr->ia_valid & ATTR_MODE) {
869 err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode));
870 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
871 inode->i_mode = F2FS_I(inode)->i_acl_mode;
872 clear_inode_flag(inode, FI_ACL_MODE);
876 /* file size may changed here */
877 f2fs_mark_inode_dirty_sync(inode, true);
879 /* inode change will produce dirty node pages flushed by checkpoint */
880 f2fs_balance_fs(F2FS_I_SB(inode), true);
885 const struct inode_operations f2fs_file_inode_operations = {
886 .getattr = f2fs_getattr,
887 .setattr = f2fs_setattr,
888 .get_acl = f2fs_get_acl,
889 .set_acl = f2fs_set_acl,
890 #ifdef CONFIG_F2FS_FS_XATTR
891 .listxattr = f2fs_listxattr,
893 .fiemap = f2fs_fiemap,
896 static int fill_zero(struct inode *inode, pgoff_t index,
897 loff_t start, loff_t len)
899 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
905 f2fs_balance_fs(sbi, true);
908 page = f2fs_get_new_data_page(inode, NULL, index, false);
912 return PTR_ERR(page);
914 f2fs_wait_on_page_writeback(page, DATA, true, true);
915 zero_user(page, start, len);
916 set_page_dirty(page);
917 f2fs_put_page(page, 1);
921 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
925 while (pg_start < pg_end) {
926 struct dnode_of_data dn;
927 pgoff_t end_offset, count;
929 set_new_dnode(&dn, inode, NULL, NULL, 0);
930 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
932 if (err == -ENOENT) {
933 pg_start = f2fs_get_next_page_offset(&dn,
940 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
941 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
943 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
945 f2fs_truncate_data_blocks_range(&dn, count);
953 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
955 pgoff_t pg_start, pg_end;
956 loff_t off_start, off_end;
959 ret = f2fs_convert_inline_inode(inode);
963 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
964 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
966 off_start = offset & (PAGE_SIZE - 1);
967 off_end = (offset + len) & (PAGE_SIZE - 1);
969 if (pg_start == pg_end) {
970 ret = fill_zero(inode, pg_start, off_start,
971 off_end - off_start);
976 ret = fill_zero(inode, pg_start++, off_start,
977 PAGE_SIZE - off_start);
982 ret = fill_zero(inode, pg_end, 0, off_end);
987 if (pg_start < pg_end) {
988 struct address_space *mapping = inode->i_mapping;
989 loff_t blk_start, blk_end;
990 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
992 f2fs_balance_fs(sbi, true);
994 blk_start = (loff_t)pg_start << PAGE_SHIFT;
995 blk_end = (loff_t)pg_end << PAGE_SHIFT;
997 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
998 down_write(&F2FS_I(inode)->i_mmap_sem);
1000 truncate_inode_pages_range(mapping, blk_start,
1004 ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1005 f2fs_unlock_op(sbi);
1007 up_write(&F2FS_I(inode)->i_mmap_sem);
1008 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1015 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1016 int *do_replace, pgoff_t off, pgoff_t len)
1018 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1019 struct dnode_of_data dn;
1023 set_new_dnode(&dn, inode, NULL, NULL, 0);
1024 ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1025 if (ret && ret != -ENOENT) {
1027 } else if (ret == -ENOENT) {
1028 if (dn.max_level == 0)
1030 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) - dn.ofs_in_node,
1037 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1038 dn.ofs_in_node, len);
1039 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1040 *blkaddr = datablock_addr(dn.inode,
1041 dn.node_page, dn.ofs_in_node);
1043 if (__is_valid_data_blkaddr(*blkaddr) &&
1044 !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1045 DATA_GENERIC_ENHANCE)) {
1046 f2fs_put_dnode(&dn);
1047 return -EFSCORRUPTED;
1050 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1052 if (test_opt(sbi, LFS)) {
1053 f2fs_put_dnode(&dn);
1057 /* do not invalidate this block address */
1058 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1062 f2fs_put_dnode(&dn);
1071 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1072 int *do_replace, pgoff_t off, int len)
1074 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1075 struct dnode_of_data dn;
1078 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1079 if (*do_replace == 0)
1082 set_new_dnode(&dn, inode, NULL, NULL, 0);
1083 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1085 dec_valid_block_count(sbi, inode, 1);
1086 f2fs_invalidate_blocks(sbi, *blkaddr);
1088 f2fs_update_data_blkaddr(&dn, *blkaddr);
1090 f2fs_put_dnode(&dn);
1095 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1096 block_t *blkaddr, int *do_replace,
1097 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1099 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1104 if (blkaddr[i] == NULL_ADDR && !full) {
1109 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1110 struct dnode_of_data dn;
1111 struct node_info ni;
1115 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1116 ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1120 ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1122 f2fs_put_dnode(&dn);
1126 ilen = min((pgoff_t)
1127 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1128 dn.ofs_in_node, len - i);
1130 dn.data_blkaddr = datablock_addr(dn.inode,
1131 dn.node_page, dn.ofs_in_node);
1132 f2fs_truncate_data_blocks_range(&dn, 1);
1134 if (do_replace[i]) {
1135 f2fs_i_blocks_write(src_inode,
1137 f2fs_i_blocks_write(dst_inode,
1139 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1140 blkaddr[i], ni.version, true, false);
1146 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1147 if (dst_inode->i_size < new_size)
1148 f2fs_i_size_write(dst_inode, new_size);
1149 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1151 f2fs_put_dnode(&dn);
1153 struct page *psrc, *pdst;
1155 psrc = f2fs_get_lock_data_page(src_inode,
1158 return PTR_ERR(psrc);
1159 pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1162 f2fs_put_page(psrc, 1);
1163 return PTR_ERR(pdst);
1165 f2fs_copy_page(psrc, pdst);
1166 set_page_dirty(pdst);
1167 f2fs_put_page(pdst, 1);
1168 f2fs_put_page(psrc, 1);
1170 ret = f2fs_truncate_hole(src_inode,
1171 src + i, src + i + 1);
1180 static int __exchange_data_block(struct inode *src_inode,
1181 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1182 pgoff_t len, bool full)
1184 block_t *src_blkaddr;
1190 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1192 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1193 array_size(olen, sizeof(block_t)),
1198 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1199 array_size(olen, sizeof(int)),
1202 kvfree(src_blkaddr);
1206 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1207 do_replace, src, olen);
1211 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1212 do_replace, src, dst, olen, full);
1220 kvfree(src_blkaddr);
1226 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1227 kvfree(src_blkaddr);
1232 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1234 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1235 pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1236 pgoff_t start = offset >> PAGE_SHIFT;
1237 pgoff_t end = (offset + len) >> PAGE_SHIFT;
1240 f2fs_balance_fs(sbi, true);
1242 /* avoid gc operation during block exchange */
1243 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1244 down_write(&F2FS_I(inode)->i_mmap_sem);
1247 f2fs_drop_extent_tree(inode);
1248 truncate_pagecache(inode, offset);
1249 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1250 f2fs_unlock_op(sbi);
1252 up_write(&F2FS_I(inode)->i_mmap_sem);
1253 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1257 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1262 if (offset + len >= i_size_read(inode))
1265 /* collapse range should be aligned to block size of f2fs. */
1266 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1269 ret = f2fs_convert_inline_inode(inode);
1273 /* write out all dirty pages from offset */
1274 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1278 ret = f2fs_do_collapse(inode, offset, len);
1282 /* write out all moved pages, if possible */
1283 down_write(&F2FS_I(inode)->i_mmap_sem);
1284 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1285 truncate_pagecache(inode, offset);
1287 new_size = i_size_read(inode) - len;
1288 truncate_pagecache(inode, new_size);
1290 ret = f2fs_truncate_blocks(inode, new_size, true);
1291 up_write(&F2FS_I(inode)->i_mmap_sem);
1293 f2fs_i_size_write(inode, new_size);
1297 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1300 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1301 pgoff_t index = start;
1302 unsigned int ofs_in_node = dn->ofs_in_node;
1306 for (; index < end; index++, dn->ofs_in_node++) {
1307 if (datablock_addr(dn->inode, dn->node_page,
1308 dn->ofs_in_node) == NULL_ADDR)
1312 dn->ofs_in_node = ofs_in_node;
1313 ret = f2fs_reserve_new_blocks(dn, count);
1317 dn->ofs_in_node = ofs_in_node;
1318 for (index = start; index < end; index++, dn->ofs_in_node++) {
1319 dn->data_blkaddr = datablock_addr(dn->inode,
1320 dn->node_page, dn->ofs_in_node);
1322 * f2fs_reserve_new_blocks will not guarantee entire block
1325 if (dn->data_blkaddr == NULL_ADDR) {
1329 if (dn->data_blkaddr != NEW_ADDR) {
1330 f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1331 dn->data_blkaddr = NEW_ADDR;
1332 f2fs_set_data_blkaddr(dn);
1336 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1341 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1344 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1345 struct address_space *mapping = inode->i_mapping;
1346 pgoff_t index, pg_start, pg_end;
1347 loff_t new_size = i_size_read(inode);
1348 loff_t off_start, off_end;
1351 ret = inode_newsize_ok(inode, (len + offset));
1355 ret = f2fs_convert_inline_inode(inode);
1359 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1363 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1364 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1366 off_start = offset & (PAGE_SIZE - 1);
1367 off_end = (offset + len) & (PAGE_SIZE - 1);
1369 if (pg_start == pg_end) {
1370 ret = fill_zero(inode, pg_start, off_start,
1371 off_end - off_start);
1375 new_size = max_t(loff_t, new_size, offset + len);
1378 ret = fill_zero(inode, pg_start++, off_start,
1379 PAGE_SIZE - off_start);
1383 new_size = max_t(loff_t, new_size,
1384 (loff_t)pg_start << PAGE_SHIFT);
1387 for (index = pg_start; index < pg_end;) {
1388 struct dnode_of_data dn;
1389 unsigned int end_offset;
1392 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1393 down_write(&F2FS_I(inode)->i_mmap_sem);
1395 truncate_pagecache_range(inode,
1396 (loff_t)index << PAGE_SHIFT,
1397 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1401 set_new_dnode(&dn, inode, NULL, NULL, 0);
1402 ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1404 f2fs_unlock_op(sbi);
1405 up_write(&F2FS_I(inode)->i_mmap_sem);
1406 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1410 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1411 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1413 ret = f2fs_do_zero_range(&dn, index, end);
1414 f2fs_put_dnode(&dn);
1416 f2fs_unlock_op(sbi);
1417 up_write(&F2FS_I(inode)->i_mmap_sem);
1418 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1420 f2fs_balance_fs(sbi, dn.node_changed);
1426 new_size = max_t(loff_t, new_size,
1427 (loff_t)index << PAGE_SHIFT);
1431 ret = fill_zero(inode, pg_end, 0, off_end);
1435 new_size = max_t(loff_t, new_size, offset + len);
1440 if (new_size > i_size_read(inode)) {
1441 if (mode & FALLOC_FL_KEEP_SIZE)
1442 file_set_keep_isize(inode);
1444 f2fs_i_size_write(inode, new_size);
1449 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1451 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1452 pgoff_t nr, pg_start, pg_end, delta, idx;
1456 new_size = i_size_read(inode) + len;
1457 ret = inode_newsize_ok(inode, new_size);
1461 if (offset >= i_size_read(inode))
1464 /* insert range should be aligned to block size of f2fs. */
1465 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1468 ret = f2fs_convert_inline_inode(inode);
1472 f2fs_balance_fs(sbi, true);
1474 down_write(&F2FS_I(inode)->i_mmap_sem);
1475 ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1476 up_write(&F2FS_I(inode)->i_mmap_sem);
1480 /* write out all dirty pages from offset */
1481 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1485 pg_start = offset >> PAGE_SHIFT;
1486 pg_end = (offset + len) >> PAGE_SHIFT;
1487 delta = pg_end - pg_start;
1488 idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1490 /* avoid gc operation during block exchange */
1491 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1492 down_write(&F2FS_I(inode)->i_mmap_sem);
1493 truncate_pagecache(inode, offset);
1495 while (!ret && idx > pg_start) {
1496 nr = idx - pg_start;
1502 f2fs_drop_extent_tree(inode);
1504 ret = __exchange_data_block(inode, inode, idx,
1505 idx + delta, nr, false);
1506 f2fs_unlock_op(sbi);
1508 up_write(&F2FS_I(inode)->i_mmap_sem);
1509 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1511 /* write out all moved pages, if possible */
1512 down_write(&F2FS_I(inode)->i_mmap_sem);
1513 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1514 truncate_pagecache(inode, offset);
1515 up_write(&F2FS_I(inode)->i_mmap_sem);
1518 f2fs_i_size_write(inode, new_size);
1522 static int expand_inode_data(struct inode *inode, loff_t offset,
1523 loff_t len, int mode)
1525 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1526 struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1527 .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1528 .m_may_create = true };
1530 loff_t new_size = i_size_read(inode);
1534 err = inode_newsize_ok(inode, (len + offset));
1538 err = f2fs_convert_inline_inode(inode);
1542 f2fs_balance_fs(sbi, true);
1544 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1545 off_end = (offset + len) & (PAGE_SIZE - 1);
1547 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1548 map.m_len = pg_end - map.m_lblk;
1555 if (f2fs_is_pinned_file(inode)) {
1556 block_t len = (map.m_len >> sbi->log_blocks_per_seg) <<
1557 sbi->log_blocks_per_seg;
1560 if (map.m_len % sbi->blocks_per_seg)
1561 len += sbi->blocks_per_seg;
1563 map.m_len = sbi->blocks_per_seg;
1565 if (has_not_enough_free_secs(sbi, 0,
1566 GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1567 mutex_lock(&sbi->gc_mutex);
1568 err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1569 if (err && err != -ENODATA && err != -EAGAIN)
1573 down_write(&sbi->pin_sem);
1574 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1575 f2fs_allocate_new_segments(sbi, CURSEG_COLD_DATA);
1576 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1577 up_write(&sbi->pin_sem);
1581 map.m_lblk += map.m_len;
1587 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1596 last_off = map.m_lblk + map.m_len - 1;
1598 /* update new size to the failed position */
1599 new_size = (last_off == pg_end) ? offset + len :
1600 (loff_t)(last_off + 1) << PAGE_SHIFT;
1602 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1605 if (new_size > i_size_read(inode)) {
1606 if (mode & FALLOC_FL_KEEP_SIZE)
1607 file_set_keep_isize(inode);
1609 f2fs_i_size_write(inode, new_size);
1615 static long f2fs_fallocate(struct file *file, int mode,
1616 loff_t offset, loff_t len)
1618 struct inode *inode = file_inode(file);
1621 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1623 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1626 /* f2fs only support ->fallocate for regular file */
1627 if (!S_ISREG(inode->i_mode))
1630 if (IS_ENCRYPTED(inode) &&
1631 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1634 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1635 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1636 FALLOC_FL_INSERT_RANGE))
1641 if (mode & FALLOC_FL_PUNCH_HOLE) {
1642 if (offset >= inode->i_size)
1645 ret = punch_hole(inode, offset, len);
1646 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1647 ret = f2fs_collapse_range(inode, offset, len);
1648 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1649 ret = f2fs_zero_range(inode, offset, len, mode);
1650 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1651 ret = f2fs_insert_range(inode, offset, len);
1653 ret = expand_inode_data(inode, offset, len, mode);
1657 inode->i_mtime = inode->i_ctime = current_time(inode);
1658 f2fs_mark_inode_dirty_sync(inode, false);
1659 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1663 inode_unlock(inode);
1665 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1669 static int f2fs_release_file(struct inode *inode, struct file *filp)
1672 * f2fs_relase_file is called at every close calls. So we should
1673 * not drop any inmemory pages by close called by other process.
1675 if (!(filp->f_mode & FMODE_WRITE) ||
1676 atomic_read(&inode->i_writecount) != 1)
1679 /* some remained atomic pages should discarded */
1680 if (f2fs_is_atomic_file(inode))
1681 f2fs_drop_inmem_pages(inode);
1682 if (f2fs_is_volatile_file(inode)) {
1683 set_inode_flag(inode, FI_DROP_CACHE);
1684 filemap_fdatawrite(inode->i_mapping);
1685 clear_inode_flag(inode, FI_DROP_CACHE);
1686 clear_inode_flag(inode, FI_VOLATILE_FILE);
1687 stat_dec_volatile_write(inode);
1692 static int f2fs_file_flush(struct file *file, fl_owner_t id)
1694 struct inode *inode = file_inode(file);
1697 * If the process doing a transaction is crashed, we should do
1698 * roll-back. Otherwise, other reader/write can see corrupted database
1699 * until all the writers close its file. Since this should be done
1700 * before dropping file lock, it needs to do in ->flush.
1702 if (f2fs_is_atomic_file(inode) &&
1703 F2FS_I(inode)->inmem_task == current)
1704 f2fs_drop_inmem_pages(inode);
1708 static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1710 struct f2fs_inode_info *fi = F2FS_I(inode);
1712 /* Is it quota file? Do not allow user to mess with it */
1713 if (IS_NOQUOTA(inode))
1716 if ((iflags ^ fi->i_flags) & F2FS_CASEFOLD_FL) {
1717 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1719 if (!f2fs_empty_dir(inode))
1723 fi->i_flags = iflags | (fi->i_flags & ~mask);
1725 if (fi->i_flags & F2FS_PROJINHERIT_FL)
1726 set_inode_flag(inode, FI_PROJ_INHERIT);
1728 clear_inode_flag(inode, FI_PROJ_INHERIT);
1730 inode->i_ctime = current_time(inode);
1731 f2fs_set_inode_flags(inode);
1732 f2fs_mark_inode_dirty_sync(inode, true);
1736 /* FS_IOC_GETFLAGS and FS_IOC_SETFLAGS support */
1739 * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1740 * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1741 * F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
1742 * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1745 static const struct {
1748 } f2fs_fsflags_map[] = {
1749 { F2FS_SYNC_FL, FS_SYNC_FL },
1750 { F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
1751 { F2FS_APPEND_FL, FS_APPEND_FL },
1752 { F2FS_NODUMP_FL, FS_NODUMP_FL },
1753 { F2FS_NOATIME_FL, FS_NOATIME_FL },
1754 { F2FS_INDEX_FL, FS_INDEX_FL },
1755 { F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
1756 { F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
1757 { F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
1760 #define F2FS_GETTABLE_FS_FL ( \
1768 FS_PROJINHERIT_FL | \
1770 FS_INLINE_DATA_FL | \
1775 #define F2FS_SETTABLE_FS_FL ( \
1782 FS_PROJINHERIT_FL | \
1785 /* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1786 static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1791 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1792 if (iflags & f2fs_fsflags_map[i].iflag)
1793 fsflags |= f2fs_fsflags_map[i].fsflag;
1798 /* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1799 static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1804 for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1805 if (fsflags & f2fs_fsflags_map[i].fsflag)
1806 iflags |= f2fs_fsflags_map[i].iflag;
1811 static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1813 struct inode *inode = file_inode(filp);
1814 struct f2fs_inode_info *fi = F2FS_I(inode);
1815 u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1817 if (IS_ENCRYPTED(inode))
1818 fsflags |= FS_ENCRYPT_FL;
1819 if (IS_VERITY(inode))
1820 fsflags |= FS_VERITY_FL;
1821 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
1822 fsflags |= FS_INLINE_DATA_FL;
1823 if (is_inode_flag_set(inode, FI_PIN_FILE))
1824 fsflags |= FS_NOCOW_FL;
1826 fsflags &= F2FS_GETTABLE_FS_FL;
1828 return put_user(fsflags, (int __user *)arg);
1831 static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1833 struct inode *inode = file_inode(filp);
1834 struct f2fs_inode_info *fi = F2FS_I(inode);
1835 u32 fsflags, old_fsflags;
1839 if (!inode_owner_or_capable(inode))
1842 if (get_user(fsflags, (int __user *)arg))
1845 if (fsflags & ~F2FS_GETTABLE_FS_FL)
1847 fsflags &= F2FS_SETTABLE_FS_FL;
1849 iflags = f2fs_fsflags_to_iflags(fsflags);
1850 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
1853 ret = mnt_want_write_file(filp);
1859 old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
1860 ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
1864 ret = f2fs_setflags_common(inode, iflags,
1865 f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
1867 inode_unlock(inode);
1868 mnt_drop_write_file(filp);
1872 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1874 struct inode *inode = file_inode(filp);
1876 return put_user(inode->i_generation, (int __user *)arg);
1879 static int f2fs_ioc_start_atomic_write(struct file *filp)
1881 struct inode *inode = file_inode(filp);
1882 struct f2fs_inode_info *fi = F2FS_I(inode);
1883 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1886 if (!inode_owner_or_capable(inode))
1889 if (!S_ISREG(inode->i_mode))
1892 if (filp->f_flags & O_DIRECT)
1895 ret = mnt_want_write_file(filp);
1901 if (f2fs_is_atomic_file(inode)) {
1902 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1907 ret = f2fs_convert_inline_inode(inode);
1911 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1914 * Should wait end_io to count F2FS_WB_CP_DATA correctly by
1915 * f2fs_is_atomic_file.
1917 if (get_dirty_pages(inode))
1918 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
1919 inode->i_ino, get_dirty_pages(inode));
1920 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
1922 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1926 spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
1927 if (list_empty(&fi->inmem_ilist))
1928 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
1929 sbi->atomic_files++;
1930 spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
1932 /* add inode in inmem_list first and set atomic_file */
1933 set_inode_flag(inode, FI_ATOMIC_FILE);
1934 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1935 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1937 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1938 F2FS_I(inode)->inmem_task = current;
1939 stat_update_max_atomic_write(inode);
1941 inode_unlock(inode);
1942 mnt_drop_write_file(filp);
1946 static int f2fs_ioc_commit_atomic_write(struct file *filp)
1948 struct inode *inode = file_inode(filp);
1951 if (!inode_owner_or_capable(inode))
1954 ret = mnt_want_write_file(filp);
1958 f2fs_balance_fs(F2FS_I_SB(inode), true);
1962 if (f2fs_is_volatile_file(inode)) {
1967 if (f2fs_is_atomic_file(inode)) {
1968 ret = f2fs_commit_inmem_pages(inode);
1972 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
1974 f2fs_drop_inmem_pages(inode);
1976 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
1979 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
1980 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
1983 inode_unlock(inode);
1984 mnt_drop_write_file(filp);
1988 static int f2fs_ioc_start_volatile_write(struct file *filp)
1990 struct inode *inode = file_inode(filp);
1993 if (!inode_owner_or_capable(inode))
1996 if (!S_ISREG(inode->i_mode))
1999 ret = mnt_want_write_file(filp);
2005 if (f2fs_is_volatile_file(inode))
2008 ret = f2fs_convert_inline_inode(inode);
2012 stat_inc_volatile_write(inode);
2013 stat_update_max_volatile_write(inode);
2015 set_inode_flag(inode, FI_VOLATILE_FILE);
2016 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2018 inode_unlock(inode);
2019 mnt_drop_write_file(filp);
2023 static int f2fs_ioc_release_volatile_write(struct file *filp)
2025 struct inode *inode = file_inode(filp);
2028 if (!inode_owner_or_capable(inode))
2031 ret = mnt_want_write_file(filp);
2037 if (!f2fs_is_volatile_file(inode))
2040 if (!f2fs_is_first_block_written(inode)) {
2041 ret = truncate_partial_data_page(inode, 0, true);
2045 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2047 inode_unlock(inode);
2048 mnt_drop_write_file(filp);
2052 static int f2fs_ioc_abort_volatile_write(struct file *filp)
2054 struct inode *inode = file_inode(filp);
2057 if (!inode_owner_or_capable(inode))
2060 ret = mnt_want_write_file(filp);
2066 if (f2fs_is_atomic_file(inode))
2067 f2fs_drop_inmem_pages(inode);
2068 if (f2fs_is_volatile_file(inode)) {
2069 clear_inode_flag(inode, FI_VOLATILE_FILE);
2070 stat_dec_volatile_write(inode);
2071 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2074 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2076 inode_unlock(inode);
2078 mnt_drop_write_file(filp);
2079 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2083 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2085 struct inode *inode = file_inode(filp);
2086 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2087 struct super_block *sb = sbi->sb;
2091 if (!capable(CAP_SYS_ADMIN))
2094 if (get_user(in, (__u32 __user *)arg))
2097 if (in != F2FS_GOING_DOWN_FULLSYNC) {
2098 ret = mnt_want_write_file(filp);
2104 case F2FS_GOING_DOWN_FULLSYNC:
2105 sb = freeze_bdev(sb->s_bdev);
2111 f2fs_stop_checkpoint(sbi, false);
2112 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2113 thaw_bdev(sb->s_bdev, sb);
2116 case F2FS_GOING_DOWN_METASYNC:
2117 /* do checkpoint only */
2118 ret = f2fs_sync_fs(sb, 1);
2121 f2fs_stop_checkpoint(sbi, false);
2122 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2124 case F2FS_GOING_DOWN_NOSYNC:
2125 f2fs_stop_checkpoint(sbi, false);
2126 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2128 case F2FS_GOING_DOWN_METAFLUSH:
2129 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2130 f2fs_stop_checkpoint(sbi, false);
2131 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2133 case F2FS_GOING_DOWN_NEED_FSCK:
2134 set_sbi_flag(sbi, SBI_NEED_FSCK);
2135 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2136 set_sbi_flag(sbi, SBI_IS_DIRTY);
2137 /* do checkpoint only */
2138 ret = f2fs_sync_fs(sb, 1);
2145 f2fs_stop_gc_thread(sbi);
2146 f2fs_stop_discard_thread(sbi);
2148 f2fs_drop_discard_cmd(sbi);
2149 clear_opt(sbi, DISCARD);
2151 f2fs_update_time(sbi, REQ_TIME);
2153 if (in != F2FS_GOING_DOWN_FULLSYNC)
2154 mnt_drop_write_file(filp);
2156 trace_f2fs_shutdown(sbi, in, ret);
2161 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2163 struct inode *inode = file_inode(filp);
2164 struct super_block *sb = inode->i_sb;
2165 struct request_queue *q = bdev_get_queue(sb->s_bdev);
2166 struct fstrim_range range;
2169 if (!capable(CAP_SYS_ADMIN))
2172 if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2175 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2179 ret = mnt_want_write_file(filp);
2183 range.minlen = max((unsigned int)range.minlen,
2184 q->limits.discard_granularity);
2185 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2186 mnt_drop_write_file(filp);
2190 if (copy_to_user((struct fstrim_range __user *)arg, &range,
2193 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2197 static bool uuid_is_nonzero(__u8 u[16])
2201 for (i = 0; i < 16; i++)
2207 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2209 struct inode *inode = file_inode(filp);
2211 if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2214 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2216 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2219 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2221 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2223 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2226 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2228 struct inode *inode = file_inode(filp);
2229 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2232 if (!f2fs_sb_has_encrypt(sbi))
2235 err = mnt_want_write_file(filp);
2239 down_write(&sbi->sb_lock);
2241 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2244 /* update superblock with uuid */
2245 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2247 err = f2fs_commit_super(sbi, false);
2250 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2254 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2258 up_write(&sbi->sb_lock);
2259 mnt_drop_write_file(filp);
2263 static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2266 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2269 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2272 static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2274 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2277 return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2280 static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2282 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2285 return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2288 static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2291 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2294 return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2297 static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2300 if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2303 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2306 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2308 struct inode *inode = file_inode(filp);
2309 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2313 if (!capable(CAP_SYS_ADMIN))
2316 if (get_user(sync, (__u32 __user *)arg))
2319 if (f2fs_readonly(sbi->sb))
2322 ret = mnt_want_write_file(filp);
2327 if (!mutex_trylock(&sbi->gc_mutex)) {
2332 mutex_lock(&sbi->gc_mutex);
2335 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
2337 mnt_drop_write_file(filp);
2341 static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2343 struct inode *inode = file_inode(filp);
2344 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2345 struct f2fs_gc_range range;
2349 if (!capable(CAP_SYS_ADMIN))
2352 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2356 if (f2fs_readonly(sbi->sb))
2359 end = range.start + range.len;
2360 if (end < range.start || range.start < MAIN_BLKADDR(sbi) ||
2361 end >= MAX_BLKADDR(sbi))
2364 ret = mnt_want_write_file(filp);
2370 if (!mutex_trylock(&sbi->gc_mutex)) {
2375 mutex_lock(&sbi->gc_mutex);
2378 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
2379 range.start += BLKS_PER_SEC(sbi);
2380 if (range.start <= end)
2383 mnt_drop_write_file(filp);
2387 static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2389 struct inode *inode = file_inode(filp);
2390 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2393 if (!capable(CAP_SYS_ADMIN))
2396 if (f2fs_readonly(sbi->sb))
2399 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2400 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2404 ret = mnt_want_write_file(filp);
2408 ret = f2fs_sync_fs(sbi->sb, 1);
2410 mnt_drop_write_file(filp);
2414 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2416 struct f2fs_defragment *range)
2418 struct inode *inode = file_inode(filp);
2419 struct f2fs_map_blocks map = { .m_next_extent = NULL,
2420 .m_seg_type = NO_CHECK_TYPE ,
2421 .m_may_create = false };
2422 struct extent_info ei = {0, 0, 0};
2423 pgoff_t pg_start, pg_end, next_pgofs;
2424 unsigned int blk_per_seg = sbi->blocks_per_seg;
2425 unsigned int total = 0, sec_num;
2426 block_t blk_end = 0;
2427 bool fragmented = false;
2430 /* if in-place-update policy is enabled, don't waste time here */
2431 if (f2fs_should_update_inplace(inode, NULL))
2434 pg_start = range->start >> PAGE_SHIFT;
2435 pg_end = (range->start + range->len) >> PAGE_SHIFT;
2437 f2fs_balance_fs(sbi, true);
2441 /* writeback all dirty pages in the range */
2442 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2443 range->start + range->len - 1);
2448 * lookup mapping info in extent cache, skip defragmenting if physical
2449 * block addresses are continuous.
2451 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2452 if (ei.fofs + ei.len >= pg_end)
2456 map.m_lblk = pg_start;
2457 map.m_next_pgofs = &next_pgofs;
2460 * lookup mapping info in dnode page cache, skip defragmenting if all
2461 * physical block addresses are continuous even if there are hole(s)
2462 * in logical blocks.
2464 while (map.m_lblk < pg_end) {
2465 map.m_len = pg_end - map.m_lblk;
2466 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2470 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2471 map.m_lblk = next_pgofs;
2475 if (blk_end && blk_end != map.m_pblk)
2478 /* record total count of block that we're going to move */
2481 blk_end = map.m_pblk + map.m_len;
2483 map.m_lblk += map.m_len;
2491 sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
2494 * make sure there are enough free section for LFS allocation, this can
2495 * avoid defragment running in SSR mode when free section are allocated
2498 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2503 map.m_lblk = pg_start;
2504 map.m_len = pg_end - pg_start;
2507 while (map.m_lblk < pg_end) {
2512 map.m_len = pg_end - map.m_lblk;
2513 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2517 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2518 map.m_lblk = next_pgofs;
2522 set_inode_flag(inode, FI_DO_DEFRAG);
2525 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2528 page = f2fs_get_lock_data_page(inode, idx, true);
2530 err = PTR_ERR(page);
2534 set_page_dirty(page);
2535 f2fs_put_page(page, 1);
2544 if (map.m_lblk < pg_end && cnt < blk_per_seg)
2547 clear_inode_flag(inode, FI_DO_DEFRAG);
2549 err = filemap_fdatawrite(inode->i_mapping);
2554 clear_inode_flag(inode, FI_DO_DEFRAG);
2556 inode_unlock(inode);
2558 range->len = (u64)total << PAGE_SHIFT;
2562 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2564 struct inode *inode = file_inode(filp);
2565 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2566 struct f2fs_defragment range;
2569 if (!capable(CAP_SYS_ADMIN))
2572 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2575 if (f2fs_readonly(sbi->sb))
2578 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2582 /* verify alignment of offset & size */
2583 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2586 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2587 sbi->max_file_blocks))
2590 err = mnt_want_write_file(filp);
2594 err = f2fs_defragment_range(sbi, filp, &range);
2595 mnt_drop_write_file(filp);
2597 f2fs_update_time(sbi, REQ_TIME);
2601 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2608 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2609 struct file *file_out, loff_t pos_out, size_t len)
2611 struct inode *src = file_inode(file_in);
2612 struct inode *dst = file_inode(file_out);
2613 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2614 size_t olen = len, dst_max_i_size = 0;
2618 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2619 src->i_sb != dst->i_sb)
2622 if (unlikely(f2fs_readonly(src->i_sb)))
2625 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2628 if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2632 if (pos_in == pos_out)
2634 if (pos_out > pos_in && pos_out < pos_in + len)
2641 if (!inode_trylock(dst))
2646 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2649 olen = len = src->i_size - pos_in;
2650 if (pos_in + len == src->i_size)
2651 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2657 dst_osize = dst->i_size;
2658 if (pos_out + olen > dst->i_size)
2659 dst_max_i_size = pos_out + olen;
2661 /* verify the end result is block aligned */
2662 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2663 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2664 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2667 ret = f2fs_convert_inline_inode(src);
2671 ret = f2fs_convert_inline_inode(dst);
2675 /* write out all dirty pages from offset */
2676 ret = filemap_write_and_wait_range(src->i_mapping,
2677 pos_in, pos_in + len);
2681 ret = filemap_write_and_wait_range(dst->i_mapping,
2682 pos_out, pos_out + len);
2686 f2fs_balance_fs(sbi, true);
2688 down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2691 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2696 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2697 pos_out >> F2FS_BLKSIZE_BITS,
2698 len >> F2FS_BLKSIZE_BITS, false);
2702 f2fs_i_size_write(dst, dst_max_i_size);
2703 else if (dst_osize != dst->i_size)
2704 f2fs_i_size_write(dst, dst_osize);
2706 f2fs_unlock_op(sbi);
2709 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2711 up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2720 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2722 struct f2fs_move_range range;
2726 if (!(filp->f_mode & FMODE_READ) ||
2727 !(filp->f_mode & FMODE_WRITE))
2730 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2734 dst = fdget(range.dst_fd);
2738 if (!(dst.file->f_mode & FMODE_WRITE)) {
2743 err = mnt_want_write_file(filp);
2747 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2748 range.pos_out, range.len);
2750 mnt_drop_write_file(filp);
2754 if (copy_to_user((struct f2fs_move_range __user *)arg,
2755 &range, sizeof(range)))
2762 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2764 struct inode *inode = file_inode(filp);
2765 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2766 struct sit_info *sm = SIT_I(sbi);
2767 unsigned int start_segno = 0, end_segno = 0;
2768 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2769 struct f2fs_flush_device range;
2772 if (!capable(CAP_SYS_ADMIN))
2775 if (f2fs_readonly(sbi->sb))
2778 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2781 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2785 if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2786 __is_large_section(sbi)) {
2787 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2788 range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
2792 ret = mnt_want_write_file(filp);
2796 if (range.dev_num != 0)
2797 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2798 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2800 start_segno = sm->last_victim[FLUSH_DEVICE];
2801 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2802 start_segno = dev_start_segno;
2803 end_segno = min(start_segno + range.segments, dev_end_segno);
2805 while (start_segno < end_segno) {
2806 if (!mutex_trylock(&sbi->gc_mutex)) {
2810 sm->last_victim[GC_CB] = end_segno + 1;
2811 sm->last_victim[GC_GREEDY] = end_segno + 1;
2812 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2813 ret = f2fs_gc(sbi, true, true, start_segno);
2821 mnt_drop_write_file(filp);
2825 static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2827 struct inode *inode = file_inode(filp);
2828 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2830 /* Must validate to set it with SQLite behavior in Android. */
2831 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2833 return put_user(sb_feature, (u32 __user *)arg);
2837 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2839 struct dquot *transfer_to[MAXQUOTAS] = {};
2840 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2841 struct super_block *sb = sbi->sb;
2844 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2845 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2846 err = __dquot_transfer(inode, transfer_to);
2848 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2849 dqput(transfer_to[PRJQUOTA]);
2854 static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2856 struct inode *inode = file_inode(filp);
2857 struct f2fs_inode_info *fi = F2FS_I(inode);
2858 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2863 if (!f2fs_sb_has_project_quota(sbi)) {
2864 if (projid != F2FS_DEF_PROJID)
2870 if (!f2fs_has_extra_attr(inode))
2873 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2875 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2879 /* Is it quota file? Do not allow user to mess with it */
2880 if (IS_NOQUOTA(inode))
2883 ipage = f2fs_get_node_page(sbi, inode->i_ino);
2885 return PTR_ERR(ipage);
2887 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2890 f2fs_put_page(ipage, 1);
2893 f2fs_put_page(ipage, 1);
2895 err = dquot_initialize(inode);
2900 err = f2fs_transfer_project_quota(inode, kprojid);
2904 F2FS_I(inode)->i_projid = kprojid;
2905 inode->i_ctime = current_time(inode);
2906 f2fs_mark_inode_dirty_sync(inode, true);
2908 f2fs_unlock_op(sbi);
2912 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2917 static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2919 if (projid != F2FS_DEF_PROJID)
2925 /* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
2928 * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
2929 * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
2930 * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
2933 static const struct {
2936 } f2fs_xflags_map[] = {
2937 { F2FS_SYNC_FL, FS_XFLAG_SYNC },
2938 { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
2939 { F2FS_APPEND_FL, FS_XFLAG_APPEND },
2940 { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
2941 { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
2942 { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
2945 #define F2FS_SUPPORTED_XFLAGS ( \
2947 FS_XFLAG_IMMUTABLE | \
2950 FS_XFLAG_NOATIME | \
2951 FS_XFLAG_PROJINHERIT)
2953 /* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
2954 static inline u32 f2fs_iflags_to_xflags(u32 iflags)
2959 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
2960 if (iflags & f2fs_xflags_map[i].iflag)
2961 xflags |= f2fs_xflags_map[i].xflag;
2966 /* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
2967 static inline u32 f2fs_xflags_to_iflags(u32 xflags)
2972 for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
2973 if (xflags & f2fs_xflags_map[i].xflag)
2974 iflags |= f2fs_xflags_map[i].iflag;
2979 static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
2981 struct f2fs_inode_info *fi = F2FS_I(inode);
2983 simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
2985 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
2986 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
2989 static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
2991 struct inode *inode = file_inode(filp);
2994 f2fs_fill_fsxattr(inode, &fa);
2996 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
3001 static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
3003 struct inode *inode = file_inode(filp);
3004 struct fsxattr fa, old_fa;
3008 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
3011 /* Make sure caller has proper permission */
3012 if (!inode_owner_or_capable(inode))
3015 if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
3018 iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
3019 if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3022 err = mnt_want_write_file(filp);
3028 f2fs_fill_fsxattr(inode, &old_fa);
3029 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
3033 err = f2fs_setflags_common(inode, iflags,
3034 f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
3038 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
3040 inode_unlock(inode);
3041 mnt_drop_write_file(filp);
3045 int f2fs_pin_file_control(struct inode *inode, bool inc)
3047 struct f2fs_inode_info *fi = F2FS_I(inode);
3048 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3050 /* Use i_gc_failures for normal file as a risk signal. */
3052 f2fs_i_gc_failures_write(inode,
3053 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3055 if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3056 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3057 __func__, inode->i_ino,
3058 fi->i_gc_failures[GC_FAILURE_PIN]);
3059 clear_inode_flag(inode, FI_PIN_FILE);
3065 static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3067 struct inode *inode = file_inode(filp);
3071 if (get_user(pin, (__u32 __user *)arg))
3074 if (!S_ISREG(inode->i_mode))
3077 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3080 ret = mnt_want_write_file(filp);
3086 if (f2fs_should_update_outplace(inode, NULL)) {
3092 clear_inode_flag(inode, FI_PIN_FILE);
3093 f2fs_i_gc_failures_write(inode, 0);
3097 if (f2fs_pin_file_control(inode, false)) {
3101 ret = f2fs_convert_inline_inode(inode);
3105 set_inode_flag(inode, FI_PIN_FILE);
3106 ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3108 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3110 inode_unlock(inode);
3111 mnt_drop_write_file(filp);
3115 static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3117 struct inode *inode = file_inode(filp);
3120 if (is_inode_flag_set(inode, FI_PIN_FILE))
3121 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3122 return put_user(pin, (u32 __user *)arg);
3125 int f2fs_precache_extents(struct inode *inode)
3127 struct f2fs_inode_info *fi = F2FS_I(inode);
3128 struct f2fs_map_blocks map;
3129 pgoff_t m_next_extent;
3133 if (is_inode_flag_set(inode, FI_NO_EXTENT))
3137 map.m_next_pgofs = NULL;
3138 map.m_next_extent = &m_next_extent;
3139 map.m_seg_type = NO_CHECK_TYPE;
3140 map.m_may_create = false;
3141 end = F2FS_I_SB(inode)->max_file_blocks;
3143 while (map.m_lblk < end) {
3144 map.m_len = end - map.m_lblk;
3146 down_write(&fi->i_gc_rwsem[WRITE]);
3147 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
3148 up_write(&fi->i_gc_rwsem[WRITE]);
3152 map.m_lblk = m_next_extent;
3158 static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3160 return f2fs_precache_extents(file_inode(filp));
3163 static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3165 struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3169 if (!capable(CAP_SYS_ADMIN))
3172 if (f2fs_readonly(sbi->sb))
3175 if (copy_from_user(&block_count, (void __user *)arg,
3176 sizeof(block_count)))
3179 ret = f2fs_resize_fs(sbi, block_count);
3184 static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3186 struct inode *inode = file_inode(filp);
3188 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3190 if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3191 f2fs_warn(F2FS_I_SB(inode),
3192 "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3197 return fsverity_ioctl_enable(filp, (const void __user *)arg);
3200 static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3202 if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3205 return fsverity_ioctl_measure(filp, (void __user *)arg);
3208 static int f2fs_get_volume_name(struct file *filp, unsigned long arg)
3210 struct inode *inode = file_inode(filp);
3211 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3216 vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3220 down_read(&sbi->sb_lock);
3221 count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3222 ARRAY_SIZE(sbi->raw_super->volume_name),
3223 UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3224 up_read(&sbi->sb_lock);
3226 if (copy_to_user((char __user *)arg, vbuf,
3227 min(FSLABEL_MAX, count)))
3234 static int f2fs_set_volume_name(struct file *filp, unsigned long arg)
3236 struct inode *inode = file_inode(filp);
3237 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3241 if (!capable(CAP_SYS_ADMIN))
3244 vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3246 return PTR_ERR(vbuf);
3248 err = mnt_want_write_file(filp);
3252 down_write(&sbi->sb_lock);
3254 memset(sbi->raw_super->volume_name, 0,
3255 sizeof(sbi->raw_super->volume_name));
3256 utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3257 sbi->raw_super->volume_name,
3258 ARRAY_SIZE(sbi->raw_super->volume_name));
3260 err = f2fs_commit_super(sbi, false);
3262 up_write(&sbi->sb_lock);
3264 mnt_drop_write_file(filp);
3270 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
3272 if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
3274 if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
3278 case F2FS_IOC_GETFLAGS:
3279 return f2fs_ioc_getflags(filp, arg);
3280 case F2FS_IOC_SETFLAGS:
3281 return f2fs_ioc_setflags(filp, arg);
3282 case F2FS_IOC_GETVERSION:
3283 return f2fs_ioc_getversion(filp, arg);
3284 case F2FS_IOC_START_ATOMIC_WRITE:
3285 return f2fs_ioc_start_atomic_write(filp);
3286 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3287 return f2fs_ioc_commit_atomic_write(filp);
3288 case F2FS_IOC_START_VOLATILE_WRITE:
3289 return f2fs_ioc_start_volatile_write(filp);
3290 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3291 return f2fs_ioc_release_volatile_write(filp);
3292 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3293 return f2fs_ioc_abort_volatile_write(filp);
3294 case F2FS_IOC_SHUTDOWN:
3295 return f2fs_ioc_shutdown(filp, arg);
3297 return f2fs_ioc_fitrim(filp, arg);
3298 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3299 return f2fs_ioc_set_encryption_policy(filp, arg);
3300 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3301 return f2fs_ioc_get_encryption_policy(filp, arg);
3302 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3303 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
3304 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3305 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
3306 case FS_IOC_ADD_ENCRYPTION_KEY:
3307 return f2fs_ioc_add_encryption_key(filp, arg);
3308 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3309 return f2fs_ioc_remove_encryption_key(filp, arg);
3310 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3311 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
3312 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3313 return f2fs_ioc_get_encryption_key_status(filp, arg);
3314 case F2FS_IOC_GARBAGE_COLLECT:
3315 return f2fs_ioc_gc(filp, arg);
3316 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3317 return f2fs_ioc_gc_range(filp, arg);
3318 case F2FS_IOC_WRITE_CHECKPOINT:
3319 return f2fs_ioc_write_checkpoint(filp, arg);
3320 case F2FS_IOC_DEFRAGMENT:
3321 return f2fs_ioc_defragment(filp, arg);
3322 case F2FS_IOC_MOVE_RANGE:
3323 return f2fs_ioc_move_range(filp, arg);
3324 case F2FS_IOC_FLUSH_DEVICE:
3325 return f2fs_ioc_flush_device(filp, arg);
3326 case F2FS_IOC_GET_FEATURES:
3327 return f2fs_ioc_get_features(filp, arg);
3328 case F2FS_IOC_FSGETXATTR:
3329 return f2fs_ioc_fsgetxattr(filp, arg);
3330 case F2FS_IOC_FSSETXATTR:
3331 return f2fs_ioc_fssetxattr(filp, arg);
3332 case F2FS_IOC_GET_PIN_FILE:
3333 return f2fs_ioc_get_pin_file(filp, arg);
3334 case F2FS_IOC_SET_PIN_FILE:
3335 return f2fs_ioc_set_pin_file(filp, arg);
3336 case F2FS_IOC_PRECACHE_EXTENTS:
3337 return f2fs_ioc_precache_extents(filp, arg);
3338 case F2FS_IOC_RESIZE_FS:
3339 return f2fs_ioc_resize_fs(filp, arg);
3340 case FS_IOC_ENABLE_VERITY:
3341 return f2fs_ioc_enable_verity(filp, arg);
3342 case FS_IOC_MEASURE_VERITY:
3343 return f2fs_ioc_measure_verity(filp, arg);
3344 case F2FS_IOC_GET_VOLUME_NAME:
3345 return f2fs_get_volume_name(filp, arg);
3346 case F2FS_IOC_SET_VOLUME_NAME:
3347 return f2fs_set_volume_name(filp, arg);
3353 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
3355 struct file *file = iocb->ki_filp;
3356 struct inode *inode = file_inode(file);
3359 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
3364 if (iocb->ki_flags & IOCB_NOWAIT) {
3365 if (!inode_trylock(inode)) {
3373 ret = generic_write_checks(iocb, from);
3375 bool preallocated = false;
3376 size_t target_size = 0;
3379 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
3380 set_inode_flag(inode, FI_NO_PREALLOC);
3382 if ((iocb->ki_flags & IOCB_NOWAIT)) {
3383 if (!f2fs_overwrite_io(inode, iocb->ki_pos,
3384 iov_iter_count(from)) ||
3385 f2fs_has_inline_data(inode) ||
3386 f2fs_force_buffered_io(inode, iocb, from)) {
3387 clear_inode_flag(inode, FI_NO_PREALLOC);
3388 inode_unlock(inode);
3395 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
3398 if (iocb->ki_flags & IOCB_DIRECT) {
3400 * Convert inline data for Direct I/O before entering
3403 err = f2fs_convert_inline_inode(inode);
3407 * If force_buffere_io() is true, we have to allocate
3408 * blocks all the time, since f2fs_direct_IO will fall
3409 * back to buffered IO.
3411 if (!f2fs_force_buffered_io(inode, iocb, from) &&
3412 allow_outplace_dio(inode, iocb, from))
3415 preallocated = true;
3416 target_size = iocb->ki_pos + iov_iter_count(from);
3418 err = f2fs_preallocate_blocks(iocb, from);
3421 clear_inode_flag(inode, FI_NO_PREALLOC);
3422 inode_unlock(inode);
3427 ret = __generic_file_write_iter(iocb, from);
3428 clear_inode_flag(inode, FI_NO_PREALLOC);
3430 /* if we couldn't write data, we should deallocate blocks. */
3431 if (preallocated && i_size_read(inode) < target_size)
3432 f2fs_truncate(inode);
3435 f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
3437 inode_unlock(inode);
3439 trace_f2fs_file_write_iter(inode, iocb->ki_pos,
3440 iov_iter_count(from), ret);
3442 ret = generic_write_sync(iocb, ret);
3446 #ifdef CONFIG_COMPAT
3447 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
3450 case F2FS_IOC32_GETFLAGS:
3451 cmd = F2FS_IOC_GETFLAGS;
3453 case F2FS_IOC32_SETFLAGS:
3454 cmd = F2FS_IOC_SETFLAGS;
3456 case F2FS_IOC32_GETVERSION:
3457 cmd = F2FS_IOC_GETVERSION;
3459 case F2FS_IOC_START_ATOMIC_WRITE:
3460 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
3461 case F2FS_IOC_START_VOLATILE_WRITE:
3462 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
3463 case F2FS_IOC_ABORT_VOLATILE_WRITE:
3464 case F2FS_IOC_SHUTDOWN:
3466 case F2FS_IOC_SET_ENCRYPTION_POLICY:
3467 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
3468 case F2FS_IOC_GET_ENCRYPTION_POLICY:
3469 case FS_IOC_GET_ENCRYPTION_POLICY_EX:
3470 case FS_IOC_ADD_ENCRYPTION_KEY:
3471 case FS_IOC_REMOVE_ENCRYPTION_KEY:
3472 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
3473 case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
3474 case F2FS_IOC_GARBAGE_COLLECT:
3475 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
3476 case F2FS_IOC_WRITE_CHECKPOINT:
3477 case F2FS_IOC_DEFRAGMENT:
3478 case F2FS_IOC_MOVE_RANGE:
3479 case F2FS_IOC_FLUSH_DEVICE:
3480 case F2FS_IOC_GET_FEATURES:
3481 case F2FS_IOC_FSGETXATTR:
3482 case F2FS_IOC_FSSETXATTR:
3483 case F2FS_IOC_GET_PIN_FILE:
3484 case F2FS_IOC_SET_PIN_FILE:
3485 case F2FS_IOC_PRECACHE_EXTENTS:
3486 case F2FS_IOC_RESIZE_FS:
3487 case FS_IOC_ENABLE_VERITY:
3488 case FS_IOC_MEASURE_VERITY:
3489 case F2FS_IOC_GET_VOLUME_NAME:
3490 case F2FS_IOC_SET_VOLUME_NAME:
3493 return -ENOIOCTLCMD;
3495 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
3499 const struct file_operations f2fs_file_operations = {
3500 .llseek = f2fs_llseek,
3501 .read_iter = generic_file_read_iter,
3502 .write_iter = f2fs_file_write_iter,
3503 .open = f2fs_file_open,
3504 .release = f2fs_release_file,
3505 .mmap = f2fs_file_mmap,
3506 .flush = f2fs_file_flush,
3507 .fsync = f2fs_sync_file,
3508 .fallocate = f2fs_fallocate,
3509 .unlocked_ioctl = f2fs_ioctl,
3510 #ifdef CONFIG_COMPAT
3511 .compat_ioctl = f2fs_compat_ioctl,
3513 .splice_read = generic_file_splice_read,
3514 .splice_write = iter_file_splice_write,