Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1 | /* |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2 | * fs/f2fs/file.c |
| 3 | * |
| 4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 5 | * http://www.samsung.com/ |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/f2fs_fs.h> |
| 13 | #include <linux/stat.h> |
| 14 | #include <linux/buffer_head.h> |
| 15 | #include <linux/writeback.h> |
Jaegeuk Kim | ae51fb3 | 2013-03-16 11:13:04 +0900 | [diff] [blame] | 16 | #include <linux/blkdev.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 17 | #include <linux/falloc.h> |
| 18 | #include <linux/types.h> |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 19 | #include <linux/compat.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 20 | #include <linux/uaccess.h> |
| 21 | #include <linux/mount.h> |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 22 | #include <linux/pagevec.h> |
Andy Shevchenko | 8da4b8c | 2016-05-20 17:01:00 -0700 | [diff] [blame] | 23 | #include <linux/uuid.h> |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 24 | #include <linux/file.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 25 | |
| 26 | #include "f2fs.h" |
| 27 | #include "node.h" |
| 28 | #include "segment.h" |
| 29 | #include "xattr.h" |
| 30 | #include "acl.h" |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 31 | #include "gc.h" |
Jaegeuk Kim | db9f7c1 | 2014-12-17 20:04:08 -0800 | [diff] [blame] | 32 | #include "trace.h" |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 33 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 34 | |
| 35 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, |
| 36 | struct vm_fault *vmf) |
| 37 | { |
| 38 | struct page *page = vmf->page; |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 39 | struct inode *inode = file_inode(vma->vm_file); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 40 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 41 | struct dnode_of_data dn; |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 42 | int err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 43 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 44 | sb_start_pagefault(inode->i_sb); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 45 | |
| 46 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); |
Jaegeuk Kim | b067ba1 | 2014-08-07 16:32:25 -0700 | [diff] [blame] | 47 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 48 | /* block allocation */ |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 49 | f2fs_lock_op(sbi); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 50 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | 9ba69cf | 2014-10-17 20:33:55 -0700 | [diff] [blame] | 51 | err = f2fs_reserve_block(&dn, page->index); |
| 52 | if (err) { |
| 53 | f2fs_unlock_op(sbi); |
| 54 | goto out; |
| 55 | } |
| 56 | f2fs_put_dnode(&dn); |
| 57 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 58 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 59 | f2fs_balance_fs(sbi, dn.node_changed); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 60 | |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 61 | file_update_time(vma->vm_file); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 62 | lock_page(page); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 63 | if (unlikely(page->mapping != inode->i_mapping || |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 64 | page_offset(page) > i_size_read(inode) || |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 65 | !PageUptodate(page))) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 66 | unlock_page(page); |
| 67 | err = -EFAULT; |
| 68 | goto out; |
| 69 | } |
| 70 | |
| 71 | /* |
| 72 | * check to see if the page is mapped already (no holes) |
| 73 | */ |
| 74 | if (PageMappedToDisk(page)) |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 75 | goto mapped; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 76 | |
| 77 | /* page is wholly or partially inside EOF */ |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 78 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 79 | i_size_read(inode)) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 80 | unsigned offset; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 81 | offset = i_size_read(inode) & ~PAGE_MASK; |
| 82 | zero_user_segment(page, offset, PAGE_SIZE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 83 | } |
| 84 | set_page_dirty(page); |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 85 | if (!PageUptodate(page)) |
| 86 | SetPageUptodate(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 87 | |
Jaegeuk Kim | e943a10 | 2013-10-25 14:26:31 +0900 | [diff] [blame] | 88 | trace_f2fs_vm_page_mkwrite(page, DATA); |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 89 | mapped: |
| 90 | /* fill the page */ |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 91 | f2fs_wait_on_page_writeback(page, DATA, false); |
Chao Yu | 08b39fb | 2015-10-08 13:27:34 +0800 | [diff] [blame] | 92 | |
| 93 | /* wait for GCed encrypted page writeback */ |
| 94 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) |
| 95 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); |
| 96 | |
Chao Yu | 5b33912 | 2015-07-13 17:43:19 +0800 | [diff] [blame] | 97 | /* if gced page is attached, don't write to cold segment */ |
| 98 | clear_cold_data(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 99 | out: |
| 100 | sb_end_pagefault(inode->i_sb); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 101 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 102 | return block_page_mkwrite_return(err); |
| 103 | } |
| 104 | |
| 105 | static const struct vm_operations_struct f2fs_file_vm_ops = { |
Jaegeuk Kim | 692bb55 | 2013-01-17 18:37:41 +0900 | [diff] [blame] | 106 | .fault = filemap_fault, |
Kirill A. Shutemov | f182036 | 2014-04-07 15:37:19 -0700 | [diff] [blame] | 107 | .map_pages = filemap_map_pages, |
Jaegeuk Kim | 692bb55 | 2013-01-17 18:37:41 +0900 | [diff] [blame] | 108 | .page_mkwrite = f2fs_vm_page_mkwrite, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 109 | }; |
| 110 | |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 111 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
| 112 | { |
| 113 | struct dentry *dentry; |
| 114 | |
| 115 | inode = igrab(inode); |
| 116 | dentry = d_find_any_alias(inode); |
| 117 | iput(inode); |
| 118 | if (!dentry) |
| 119 | return 0; |
| 120 | |
Jaegeuk Kim | e7d5545 | 2015-04-29 17:02:18 -0700 | [diff] [blame] | 121 | if (update_dent_inode(inode, inode, &dentry->d_name)) { |
Jaegeuk Kim | f0947e5 | 2013-07-22 22:12:56 +0900 | [diff] [blame] | 122 | dput(dentry); |
| 123 | return 0; |
| 124 | } |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 125 | |
Jaegeuk Kim | f0947e5 | 2013-07-22 22:12:56 +0900 | [diff] [blame] | 126 | *pino = parent_ino(dentry); |
| 127 | dput(dentry); |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 128 | return 1; |
| 129 | } |
| 130 | |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 131 | static inline bool need_do_checkpoint(struct inode *inode) |
| 132 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 133 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 134 | bool need_cp = false; |
| 135 | |
| 136 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) |
| 137 | need_cp = true; |
Jaegeuk Kim | bbf156f | 2016-08-29 18:23:45 -0700 | [diff] [blame] | 138 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
Jaegeuk Kim | e7d5545 | 2015-04-29 17:02:18 -0700 | [diff] [blame] | 139 | need_cp = true; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 140 | else if (file_wrong_pino(inode)) |
| 141 | need_cp = true; |
| 142 | else if (!space_for_roll_forward(sbi)) |
| 143 | need_cp = true; |
| 144 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
| 145 | need_cp = true; |
| 146 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) |
| 147 | need_cp = true; |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 148 | else if (test_opt(sbi, FASTBOOT)) |
| 149 | need_cp = true; |
Jaegeuk Kim | a344b9f | 2014-11-05 20:05:53 -0800 | [diff] [blame] | 150 | else if (sbi->active_logs == 2) |
| 151 | need_cp = true; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 152 | |
| 153 | return need_cp; |
| 154 | } |
| 155 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 156 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
| 157 | { |
| 158 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); |
| 159 | bool ret = false; |
| 160 | /* But we need to avoid that there are some inode updates */ |
| 161 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) |
| 162 | ret = true; |
| 163 | f2fs_put_page(i, 0); |
| 164 | return ret; |
| 165 | } |
| 166 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 167 | static void try_to_fix_pino(struct inode *inode) |
| 168 | { |
| 169 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 170 | nid_t pino; |
| 171 | |
| 172 | down_write(&fi->i_sem); |
| 173 | fi->xattr_ver = 0; |
| 174 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
| 175 | get_parent_ino(inode, &pino)) { |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 176 | f2fs_i_pino_write(inode, pino); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 177 | file_got_pino(inode); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 178 | } |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 179 | up_write(&fi->i_sem); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 180 | } |
| 181 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 182 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
| 183 | int datasync, bool atomic) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 184 | { |
| 185 | struct inode *inode = file->f_mapping->host; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 186 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 187 | nid_t ino = inode->i_ino; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 188 | int ret = 0; |
| 189 | bool need_cp = false; |
| 190 | struct writeback_control wbc = { |
Jaegeuk Kim | c81bf1c | 2014-03-03 11:28:40 +0900 | [diff] [blame] | 191 | .sync_mode = WB_SYNC_ALL, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 192 | .nr_to_write = LONG_MAX, |
| 193 | .for_reclaim = 0, |
| 194 | }; |
| 195 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 196 | if (unlikely(f2fs_readonly(inode->i_sb))) |
Namjae Jeon | 1fa95b0 | 2012-12-01 10:56:01 +0900 | [diff] [blame] | 197 | return 0; |
| 198 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 199 | trace_f2fs_sync_file_enter(inode); |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 200 | |
Yunlei He | 6b4eec8 | 2018-11-06 10:25:29 +0800 | [diff] [blame] | 201 | if (S_ISDIR(inode->i_mode)) |
| 202 | goto go_write; |
| 203 | |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 204 | /* if fdatasync is triggered, let's do in-place-update */ |
Jaegeuk Kim | c46a155 | 2015-12-31 13:49:17 -0800 | [diff] [blame] | 205 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 206 | set_inode_flag(inode, FI_NEED_IPU); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 207 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 208 | clear_inode_flag(inode, FI_NEED_IPU); |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 209 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 210 | if (ret) { |
| 211 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 212 | return ret; |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 213 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 214 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 215 | /* if the inode is dirty, let's recover all the time */ |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 216 | if (!datasync && !f2fs_skip_inode_update(inode)) { |
Jaegeuk Kim | 2286c02 | 2015-08-15 21:51:05 -0700 | [diff] [blame] | 217 | f2fs_write_inode(inode, NULL); |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 218 | goto go_write; |
| 219 | } |
| 220 | |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 221 | /* |
| 222 | * if there is no written data, don't waste time to write recovery info. |
| 223 | */ |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 224 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 225 | !exist_written_data(sbi, ino, APPEND_INO)) { |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 226 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 227 | /* it may call write_inode just prior to fsync */ |
| 228 | if (need_inode_page_update(sbi, ino)) |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 229 | goto go_write; |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 230 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 231 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 232 | exist_written_data(sbi, ino, UPDATE_INO)) |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 233 | goto flush_out; |
| 234 | goto out; |
| 235 | } |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 236 | go_write: |
Jaegeuk Kim | e5d2385 | 2013-07-03 10:55:52 +0900 | [diff] [blame] | 237 | /* |
| 238 | * Both of fdatasync() and fsync() are able to be recovered from |
| 239 | * sudden-power-off. |
| 240 | */ |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 241 | down_read(&F2FS_I(inode)->i_sem); |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 242 | need_cp = need_do_checkpoint(inode); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 243 | up_read(&F2FS_I(inode)->i_sem); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 244 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 245 | if (need_cp) { |
| 246 | /* all the dirty node pages should be flushed for POR */ |
| 247 | ret = f2fs_sync_fs(inode->i_sb, 1); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 248 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 249 | /* |
| 250 | * We've secured consistency through sync_fs. Following pino |
| 251 | * will be used only for fsynced inodes after checkpoint. |
| 252 | */ |
| 253 | try_to_fix_pino(inode); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 254 | clear_inode_flag(inode, FI_APPEND_WRITE); |
| 255 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 256 | goto out; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 257 | } |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 258 | sync_nodes: |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 259 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 260 | if (ret) |
| 261 | goto out; |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 262 | |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 263 | /* if cp_error was enabled, we should avoid infinite loop */ |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 264 | if (unlikely(f2fs_cp_error(sbi))) { |
| 265 | ret = -EIO; |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 266 | goto out; |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 267 | } |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 268 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 269 | if (need_inode_block_update(sbi, ino)) { |
Jaegeuk Kim | b56ab83 | 2016-06-30 19:09:37 -0700 | [diff] [blame] | 270 | f2fs_mark_inode_dirty_sync(inode); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 271 | f2fs_write_inode(inode, NULL); |
| 272 | goto sync_nodes; |
| 273 | } |
| 274 | |
| 275 | ret = wait_on_node_pages_writeback(sbi, ino); |
| 276 | if (ret) |
| 277 | goto out; |
| 278 | |
| 279 | /* once recovery info is written, don't need to tack this */ |
Chao Yu | a49324f | 2015-12-15 13:29:47 +0800 | [diff] [blame] | 280 | remove_ino_entry(sbi, ino, APPEND_INO); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 281 | clear_inode_flag(inode, FI_APPEND_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 282 | flush_out: |
Chao Yu | a49324f | 2015-12-15 13:29:47 +0800 | [diff] [blame] | 283 | remove_ino_entry(sbi, ino, UPDATE_INO); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 284 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 285 | ret = f2fs_issue_flush(sbi); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 286 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 287 | out: |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 288 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 289 | f2fs_trace_ios(NULL, 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 290 | return ret; |
| 291 | } |
| 292 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 293 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
| 294 | { |
| 295 | return f2fs_do_sync_file(file, start, end, datasync, false); |
| 296 | } |
| 297 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 298 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
| 299 | pgoff_t pgofs, int whence) |
| 300 | { |
| 301 | struct pagevec pvec; |
| 302 | int nr_pages; |
| 303 | |
| 304 | if (whence != SEEK_DATA) |
| 305 | return 0; |
| 306 | |
| 307 | /* find first dirty page index */ |
| 308 | pagevec_init(&pvec, 0); |
Jaegeuk Kim | 65b85cc | 2014-07-30 17:25:54 -0700 | [diff] [blame] | 309 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
| 310 | PAGECACHE_TAG_DIRTY, 1); |
Chao Yu | 80dd9c0 | 2016-02-24 17:20:44 +0800 | [diff] [blame] | 311 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 312 | pagevec_release(&pvec); |
| 313 | return pgofs; |
| 314 | } |
| 315 | |
Chao Yu | d451188 | 2018-06-05 17:44:11 +0800 | [diff] [blame] | 316 | static bool __found_offset(struct f2fs_sb_info *sbi, block_t blkaddr, |
| 317 | pgoff_t dirty, pgoff_t pgofs, int whence) |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 318 | { |
| 319 | switch (whence) { |
| 320 | case SEEK_DATA: |
| 321 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || |
Chao Yu | d451188 | 2018-06-05 17:44:11 +0800 | [diff] [blame] | 322 | is_valid_data_blkaddr(sbi, blkaddr)) |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 323 | return true; |
| 324 | break; |
| 325 | case SEEK_HOLE: |
| 326 | if (blkaddr == NULL_ADDR) |
| 327 | return true; |
| 328 | break; |
| 329 | } |
| 330 | return false; |
| 331 | } |
| 332 | |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 333 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
| 334 | { |
| 335 | struct inode *inode = file->f_mapping->host; |
| 336 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 337 | struct dnode_of_data dn; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 338 | pgoff_t pgofs, end_offset, dirty; |
| 339 | loff_t data_ofs = offset; |
| 340 | loff_t isize; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 341 | int err = 0; |
| 342 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 343 | inode_lock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 344 | |
| 345 | isize = i_size_read(inode); |
| 346 | if (offset >= isize) |
| 347 | goto fail; |
| 348 | |
| 349 | /* handle inline data case */ |
Chao Yu | 622f28a | 2014-09-24 18:19:10 +0800 | [diff] [blame] | 350 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 351 | if (whence == SEEK_HOLE) |
| 352 | data_ofs = isize; |
| 353 | goto found; |
| 354 | } |
| 355 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 356 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 357 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 358 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
| 359 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 360 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 361 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | ac6f199 | 2016-06-16 17:03:23 -0700 | [diff] [blame] | 362 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 363 | if (err && err != -ENOENT) { |
| 364 | goto fail; |
| 365 | } else if (err == -ENOENT) { |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 366 | /* direct node does not exists */ |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 367 | if (whence == SEEK_DATA) { |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 368 | pgofs = get_next_page_offset(&dn, pgofs); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 369 | continue; |
| 370 | } else { |
| 371 | goto found; |
| 372 | } |
| 373 | } |
| 374 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 375 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 376 | |
| 377 | /* find data/hole in dnode block */ |
| 378 | for (; dn.ofs_in_node < end_offset; |
| 379 | dn.ofs_in_node++, pgofs++, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 380 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 381 | block_t blkaddr; |
| 382 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); |
| 383 | |
Chao Yu | aafb371 | 2018-08-01 19:13:44 +0800 | [diff] [blame] | 384 | if (__is_valid_data_blkaddr(blkaddr) && |
| 385 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), |
| 386 | blkaddr, DATA_GENERIC)) { |
| 387 | f2fs_put_dnode(&dn); |
| 388 | goto fail; |
| 389 | } |
| 390 | |
Chao Yu | d451188 | 2018-06-05 17:44:11 +0800 | [diff] [blame] | 391 | if (__found_offset(F2FS_I_SB(inode), blkaddr, dirty, |
| 392 | pgofs, whence)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 393 | f2fs_put_dnode(&dn); |
| 394 | goto found; |
| 395 | } |
| 396 | } |
| 397 | f2fs_put_dnode(&dn); |
| 398 | } |
| 399 | |
| 400 | if (whence == SEEK_DATA) |
| 401 | goto fail; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 402 | found: |
Jaegeuk Kim | fe369bc | 2014-04-28 17:02:48 +0900 | [diff] [blame] | 403 | if (whence == SEEK_HOLE && data_ofs > isize) |
| 404 | data_ofs = isize; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 405 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 406 | return vfs_setpos(file, data_ofs, maxbytes); |
| 407 | fail: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 408 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 409 | return -ENXIO; |
| 410 | } |
| 411 | |
| 412 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) |
| 413 | { |
| 414 | struct inode *inode = file->f_mapping->host; |
| 415 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 416 | |
| 417 | switch (whence) { |
| 418 | case SEEK_SET: |
| 419 | case SEEK_CUR: |
| 420 | case SEEK_END: |
| 421 | return generic_file_llseek_size(file, offset, whence, |
| 422 | maxbytes, i_size_read(inode)); |
| 423 | case SEEK_DATA: |
| 424 | case SEEK_HOLE: |
Jaegeuk Kim | 0b4c5afde | 2014-09-08 10:59:43 -0700 | [diff] [blame] | 425 | if (offset < 0) |
| 426 | return -ENXIO; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 427 | return f2fs_seek_block(file, offset, whence); |
| 428 | } |
| 429 | |
| 430 | return -EINVAL; |
| 431 | } |
| 432 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 433 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
| 434 | { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 435 | struct inode *inode = file_inode(file); |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 436 | int err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 437 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 438 | if (f2fs_encrypted_inode(inode)) { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 439 | err = fscrypt_get_encryption_info(inode); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 440 | if (err) |
| 441 | return 0; |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 442 | if (!f2fs_encrypted_inode(inode)) |
| 443 | return -ENOKEY; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 444 | } |
| 445 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 446 | /* we don't need to use inline_data strictly */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 447 | err = f2fs_convert_inline_inode(inode); |
| 448 | if (err) |
| 449 | return err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 450 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 451 | file_accessed(file); |
| 452 | vma->vm_ops = &f2fs_file_vm_ops; |
| 453 | return 0; |
| 454 | } |
| 455 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 456 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
| 457 | { |
| 458 | int ret = generic_file_open(inode, filp); |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 459 | struct dentry *dir; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 460 | |
| 461 | if (!ret && f2fs_encrypted_inode(inode)) { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 462 | ret = fscrypt_get_encryption_info(inode); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 463 | if (ret) |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 464 | return -EACCES; |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 465 | if (!fscrypt_has_encryption_key(inode)) |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 466 | return -ENOKEY; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 467 | } |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 468 | dir = dget_parent(file_dentry(filp)); |
| 469 | if (f2fs_encrypted_inode(d_inode(dir)) && |
| 470 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { |
| 471 | dput(dir); |
Jaegeuk Kim | 8074bb5 | 2016-02-23 09:21:37 -0800 | [diff] [blame] | 472 | return -EPERM; |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 473 | } |
| 474 | dput(dir); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 475 | return ret; |
| 476 | } |
| 477 | |
Jaegeuk Kim | b292dcab | 2013-05-22 08:02:02 +0900 | [diff] [blame] | 478 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 479 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 480 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 481 | struct f2fs_node *raw_node; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 482 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 483 | __le32 *addr; |
| 484 | |
Gu Zheng | 4559071 | 2013-07-15 17:57:38 +0800 | [diff] [blame] | 485 | raw_node = F2FS_NODE(dn->node_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 486 | addr = blkaddr_in_node(raw_node) + ofs; |
| 487 | |
Chris Fries | 6c311ec | 2014-01-17 14:44:39 -0600 | [diff] [blame] | 488 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 489 | block_t blkaddr = le32_to_cpu(*addr); |
| 490 | if (blkaddr == NULL_ADDR) |
| 491 | continue; |
| 492 | |
Jaegeuk Kim | e1509cf | 2014-12-30 22:57:55 -0800 | [diff] [blame] | 493 | dn->data_blkaddr = NULL_ADDR; |
Chao Yu | 216a620 | 2015-03-19 19:23:32 +0800 | [diff] [blame] | 494 | set_data_blkaddr(dn); |
Chao Yu | aafb371 | 2018-08-01 19:13:44 +0800 | [diff] [blame] | 495 | |
| 496 | if (__is_valid_data_blkaddr(blkaddr) && |
| 497 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) |
| 498 | continue; |
| 499 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 500 | invalidate_blocks(sbi, blkaddr); |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 501 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 502 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 503 | nr_free++; |
| 504 | } |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 505 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 506 | if (nr_free) { |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 507 | pgoff_t fofs; |
| 508 | /* |
| 509 | * once we invalidate valid blkaddr in range [ofs, ofs + count], |
| 510 | * we will invalidate all blkaddr in the whole range. |
| 511 | */ |
| 512 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 513 | dn->inode) + ofs; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 514 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
Namjae Jeon | d7cc950 | 2013-06-08 21:25:40 +0900 | [diff] [blame] | 515 | dec_valid_block_count(sbi, dn->inode, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 516 | } |
| 517 | dn->ofs_in_node = ofs; |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 518 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 519 | f2fs_update_time(sbi, REQ_TIME); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 520 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
| 521 | dn->ofs_in_node, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 522 | return nr_free; |
| 523 | } |
| 524 | |
| 525 | void truncate_data_blocks(struct dnode_of_data *dn) |
| 526 | { |
| 527 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
| 528 | } |
| 529 | |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 530 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 531 | bool cache_only) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 532 | { |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 533 | unsigned offset = from & (PAGE_SIZE - 1); |
| 534 | pgoff_t index = from >> PAGE_SHIFT; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 535 | struct address_space *mapping = inode->i_mapping; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 536 | struct page *page; |
| 537 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 538 | if (!offset && !cache_only) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 539 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 540 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 541 | if (cache_only) { |
Jaegeuk Kim | 34b5d5c | 2016-09-06 15:55:54 -0700 | [diff] [blame] | 542 | page = find_lock_page(mapping, index); |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 543 | if (page && PageUptodate(page)) |
| 544 | goto truncate_out; |
| 545 | f2fs_put_page(page, 1); |
| 546 | return 0; |
| 547 | } |
| 548 | |
Jaegeuk Kim | a56c7c6 | 2015-10-09 15:11:38 -0700 | [diff] [blame] | 549 | page = get_lock_data_page(inode, index, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 550 | if (IS_ERR(page)) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 551 | return 0; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 552 | truncate_out: |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 553 | f2fs_wait_on_page_writeback(page, DATA, true); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 554 | zero_user(page, offset, PAGE_SIZE - offset); |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 555 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
| 556 | !S_ISREG(inode->i_mode)) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 557 | set_page_dirty(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 558 | f2fs_put_page(page, 1); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 559 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 560 | } |
| 561 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 562 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 563 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 564 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 565 | unsigned int blocksize = inode->i_sb->s_blocksize; |
| 566 | struct dnode_of_data dn; |
| 567 | pgoff_t free_from; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 568 | int count = 0, err = 0; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 569 | struct page *ipage; |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 570 | bool truncate_page = false; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 571 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 572 | trace_f2fs_truncate_blocks_enter(inode, from); |
| 573 | |
Jaegeuk Kim | f7ef9b8 | 2015-02-09 12:02:44 -0800 | [diff] [blame] | 574 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 575 | |
Chao Yu | 09210c9 | 2016-05-05 19:13:03 +0800 | [diff] [blame] | 576 | if (free_from >= sbi->max_file_blocks) |
| 577 | goto free_partial; |
| 578 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 579 | if (lock) |
| 580 | f2fs_lock_op(sbi); |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 581 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 582 | ipage = get_node_page(sbi, inode->i_ino); |
| 583 | if (IS_ERR(ipage)) { |
| 584 | err = PTR_ERR(ipage); |
| 585 | goto out; |
| 586 | } |
| 587 | |
| 588 | if (f2fs_has_inline_data(inode)) { |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 589 | if (truncate_inline_inode(ipage, from)) |
| 590 | set_page_dirty(ipage); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 591 | f2fs_put_page(ipage, 1); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 592 | truncate_page = true; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 593 | goto out; |
| 594 | } |
| 595 | |
| 596 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 597 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 598 | if (err) { |
| 599 | if (err == -ENOENT) |
| 600 | goto free_next; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 601 | goto out; |
Jaegeuk Kim | 1ce86bf | 2014-10-15 10:24:34 -0700 | [diff] [blame] | 602 | } |
| 603 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 604 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 605 | |
| 606 | count -= dn.ofs_in_node; |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 607 | f2fs_bug_on(sbi, count < 0); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 608 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 609 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
| 610 | truncate_data_blocks_range(&dn, count); |
| 611 | free_from += count; |
| 612 | } |
| 613 | |
| 614 | f2fs_put_dnode(&dn); |
| 615 | free_next: |
| 616 | err = truncate_inode_blocks(inode, free_from); |
Jaegeuk Kim | 764d2c8 | 2014-11-11 11:01:01 -0800 | [diff] [blame] | 617 | out: |
| 618 | if (lock) |
| 619 | f2fs_unlock_op(sbi); |
Chao Yu | 09210c9 | 2016-05-05 19:13:03 +0800 | [diff] [blame] | 620 | free_partial: |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 621 | /* lastly zero out the first data page */ |
| 622 | if (!err) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 623 | err = truncate_partial_data_page(inode, from, truncate_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 624 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 625 | trace_f2fs_truncate_blocks_exit(inode, err); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 626 | return err; |
| 627 | } |
| 628 | |
Jaegeuk Kim | 9a449e9 | 2016-06-02 13:49:38 -0700 | [diff] [blame] | 629 | int f2fs_truncate(struct inode *inode) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 630 | { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 631 | int err; |
| 632 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 633 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 634 | S_ISLNK(inode->i_mode))) |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 635 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 636 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 637 | trace_f2fs_truncate(inode); |
| 638 | |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 639 | /* we should check inline_data size */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 640 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 641 | err = f2fs_convert_inline_inode(inode); |
| 642 | if (err) |
| 643 | return err; |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 644 | } |
| 645 | |
Jaegeuk Kim | 9a449e9 | 2016-06-02 13:49:38 -0700 | [diff] [blame] | 646 | err = truncate_blocks(inode, i_size_read(inode), true); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 647 | if (err) |
| 648 | return err; |
| 649 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 650 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Jaegeuk Kim | b56ab83 | 2016-06-30 19:09:37 -0700 | [diff] [blame] | 651 | f2fs_mark_inode_dirty_sync(inode); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 652 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 653 | } |
| 654 | |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 655 | int f2fs_getattr(struct vfsmount *mnt, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 656 | struct dentry *dentry, struct kstat *stat) |
| 657 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 658 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 659 | generic_fillattr(inode, stat); |
| 660 | stat->blocks <<= 3; |
| 661 | return 0; |
| 662 | } |
| 663 | |
| 664 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 665 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) |
| 666 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 667 | unsigned int ia_valid = attr->ia_valid; |
| 668 | |
| 669 | if (ia_valid & ATTR_UID) |
| 670 | inode->i_uid = attr->ia_uid; |
| 671 | if (ia_valid & ATTR_GID) |
| 672 | inode->i_gid = attr->ia_gid; |
| 673 | if (ia_valid & ATTR_ATIME) |
| 674 | inode->i_atime = timespec_trunc(attr->ia_atime, |
| 675 | inode->i_sb->s_time_gran); |
| 676 | if (ia_valid & ATTR_MTIME) |
| 677 | inode->i_mtime = timespec_trunc(attr->ia_mtime, |
| 678 | inode->i_sb->s_time_gran); |
| 679 | if (ia_valid & ATTR_CTIME) |
| 680 | inode->i_ctime = timespec_trunc(attr->ia_ctime, |
| 681 | inode->i_sb->s_time_gran); |
| 682 | if (ia_valid & ATTR_MODE) { |
| 683 | umode_t mode = attr->ia_mode; |
| 684 | |
| 685 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) |
| 686 | mode &= ~S_ISGID; |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 687 | set_acl_inode(inode, mode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 688 | } |
| 689 | } |
| 690 | #else |
| 691 | #define __setattr_copy setattr_copy |
| 692 | #endif |
| 693 | |
| 694 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) |
| 695 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 696 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 697 | int err; |
| 698 | |
Jan Kara | 31051c8 | 2016-05-26 16:55:18 +0200 | [diff] [blame] | 699 | err = setattr_prepare(dentry, attr); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 700 | if (err) |
| 701 | return err; |
| 702 | |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 703 | if (attr->ia_valid & ATTR_SIZE) { |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 704 | if (f2fs_encrypted_inode(inode) && |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 705 | fscrypt_get_encryption_info(inode)) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 706 | return -EACCES; |
| 707 | |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 708 | if (attr->ia_size <= i_size_read(inode)) { |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 709 | truncate_setsize(inode, attr->ia_size); |
Jaegeuk Kim | 9a449e9 | 2016-06-02 13:49:38 -0700 | [diff] [blame] | 710 | err = f2fs_truncate(inode); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 711 | if (err) |
| 712 | return err; |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 713 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 714 | } else { |
| 715 | /* |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 716 | * do not trim all blocks after i_size if target size is |
| 717 | * larger than i_size. |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 718 | */ |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 719 | truncate_setsize(inode, attr->ia_size); |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 720 | |
| 721 | /* should convert inline inode here */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 722 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 723 | err = f2fs_convert_inline_inode(inode); |
| 724 | if (err) |
| 725 | return err; |
| 726 | } |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 727 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 728 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 729 | } |
| 730 | |
| 731 | __setattr_copy(inode, attr); |
| 732 | |
| 733 | if (attr->ia_valid & ATTR_MODE) { |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 734 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 735 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
| 736 | inode->i_mode = F2FS_I(inode)->i_acl_mode; |
| 737 | clear_inode_flag(inode, FI_ACL_MODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 738 | } |
| 739 | } |
| 740 | |
Jaegeuk Kim | b56ab83 | 2016-06-30 19:09:37 -0700 | [diff] [blame] | 741 | f2fs_mark_inode_dirty_sync(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 742 | return err; |
| 743 | } |
| 744 | |
| 745 | const struct inode_operations f2fs_file_inode_operations = { |
| 746 | .getattr = f2fs_getattr, |
| 747 | .setattr = f2fs_setattr, |
| 748 | .get_acl = f2fs_get_acl, |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 749 | .set_acl = f2fs_set_acl, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 750 | #ifdef CONFIG_F2FS_FS_XATTR |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 751 | .listxattr = f2fs_listxattr, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 752 | #endif |
Jaegeuk Kim | 9ab7013 | 2014-06-08 04:30:14 +0900 | [diff] [blame] | 753 | .fiemap = f2fs_fiemap, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 754 | }; |
| 755 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 756 | static int fill_zero(struct inode *inode, pgoff_t index, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 757 | loff_t start, loff_t len) |
| 758 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 759 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 760 | struct page *page; |
| 761 | |
| 762 | if (!len) |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 763 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 764 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 765 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | bd43df0 | 2013-01-25 18:33:41 +0900 | [diff] [blame] | 766 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 767 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 64aa7ed | 2013-05-20 09:55:50 +0900 | [diff] [blame] | 768 | page = get_new_data_page(inode, NULL, index, false); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 769 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 770 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 771 | if (IS_ERR(page)) |
| 772 | return PTR_ERR(page); |
| 773 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 774 | f2fs_wait_on_page_writeback(page, DATA, true); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 775 | zero_user(page, start, len); |
| 776 | set_page_dirty(page); |
| 777 | f2fs_put_page(page, 1); |
| 778 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 779 | } |
| 780 | |
| 781 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
| 782 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 783 | int err; |
| 784 | |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 785 | while (pg_start < pg_end) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 786 | struct dnode_of_data dn; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 787 | pgoff_t end_offset, count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 788 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 789 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 790 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 791 | if (err) { |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 792 | if (err == -ENOENT) { |
| 793 | pg_start++; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 794 | continue; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 795 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 796 | return err; |
| 797 | } |
| 798 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 799 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 800 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
| 801 | |
| 802 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); |
| 803 | |
| 804 | truncate_data_blocks_range(&dn, count); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 805 | f2fs_put_dnode(&dn); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 806 | |
| 807 | pg_start += count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 808 | } |
| 809 | return 0; |
| 810 | } |
| 811 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 812 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 813 | { |
| 814 | pgoff_t pg_start, pg_end; |
| 815 | loff_t off_start, off_end; |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 816 | int ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 817 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 818 | ret = f2fs_convert_inline_inode(inode); |
| 819 | if (ret) |
| 820 | return ret; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 821 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 822 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 823 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 824 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 825 | off_start = offset & (PAGE_SIZE - 1); |
| 826 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 827 | |
| 828 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 829 | ret = fill_zero(inode, pg_start, off_start, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 830 | off_end - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 831 | if (ret) |
| 832 | return ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 833 | } else { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 834 | if (off_start) { |
| 835 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 836 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 837 | if (ret) |
| 838 | return ret; |
| 839 | } |
| 840 | if (off_end) { |
| 841 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 842 | if (ret) |
| 843 | return ret; |
| 844 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 845 | |
| 846 | if (pg_start < pg_end) { |
| 847 | struct address_space *mapping = inode->i_mapping; |
| 848 | loff_t blk_start, blk_end; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 849 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jason Hrycay | 1127a3d | 2013-04-08 20:16:44 -0500 | [diff] [blame] | 850 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 851 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 852 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 853 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
| 854 | blk_end = (loff_t)pg_end << PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 855 | truncate_inode_pages_range(mapping, blk_start, |
| 856 | blk_end - 1); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 857 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 858 | f2fs_lock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 859 | ret = truncate_hole(inode, pg_start, pg_end); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 860 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 861 | } |
| 862 | } |
| 863 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 864 | return ret; |
| 865 | } |
| 866 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 867 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
| 868 | int *do_replace, pgoff_t off, pgoff_t len) |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 869 | { |
| 870 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 871 | struct dnode_of_data dn; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 872 | int ret, done, i; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 873 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 874 | next_dnode: |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 875 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 876 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 877 | if (ret && ret != -ENOENT) { |
| 878 | return ret; |
| 879 | } else if (ret == -ENOENT) { |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 880 | if (dn.max_level == 0) |
| 881 | return -ENOENT; |
| 882 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); |
| 883 | blkaddr += done; |
| 884 | do_replace += done; |
| 885 | goto next; |
| 886 | } |
| 887 | |
| 888 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - |
| 889 | dn.ofs_in_node, len); |
| 890 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { |
| 891 | *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); |
| 892 | if (!is_checkpointed_data(sbi, *blkaddr)) { |
| 893 | |
| 894 | if (test_opt(sbi, LFS)) { |
| 895 | f2fs_put_dnode(&dn); |
| 896 | return -ENOTSUPP; |
| 897 | } |
| 898 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 899 | /* do not invalidate this block address */ |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 900 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 901 | *do_replace = 1; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 902 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 903 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 904 | f2fs_put_dnode(&dn); |
| 905 | next: |
| 906 | len -= done; |
| 907 | off += done; |
| 908 | if (len) |
| 909 | goto next_dnode; |
| 910 | return 0; |
| 911 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 912 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 913 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
| 914 | int *do_replace, pgoff_t off, int len) |
| 915 | { |
| 916 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 917 | struct dnode_of_data dn; |
| 918 | int ret, i; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 919 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 920 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
| 921 | if (*do_replace == 0) |
| 922 | continue; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 923 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 924 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 925 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); |
| 926 | if (ret) { |
| 927 | dec_valid_block_count(sbi, inode, 1); |
| 928 | invalidate_blocks(sbi, *blkaddr); |
| 929 | } else { |
| 930 | f2fs_update_data_blkaddr(&dn, *blkaddr); |
Jaegeuk Kim | 36abef4 | 2016-06-03 19:29:38 -0700 | [diff] [blame] | 931 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 932 | f2fs_put_dnode(&dn); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 933 | } |
| 934 | return 0; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 935 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 936 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 937 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, |
| 938 | block_t *blkaddr, int *do_replace, |
| 939 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) |
| 940 | { |
| 941 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); |
| 942 | pgoff_t i = 0; |
| 943 | int ret; |
| 944 | |
| 945 | while (i < len) { |
| 946 | if (blkaddr[i] == NULL_ADDR && !full) { |
| 947 | i++; |
| 948 | continue; |
| 949 | } |
| 950 | |
| 951 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
| 952 | struct dnode_of_data dn; |
| 953 | struct node_info ni; |
| 954 | size_t new_size; |
| 955 | pgoff_t ilen; |
| 956 | |
| 957 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
| 958 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); |
| 959 | if (ret) |
| 960 | return ret; |
| 961 | |
| 962 | get_node_info(sbi, dn.nid, &ni); |
| 963 | ilen = min((pgoff_t) |
| 964 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - |
| 965 | dn.ofs_in_node, len - i); |
| 966 | do { |
| 967 | dn.data_blkaddr = datablock_addr(dn.node_page, |
| 968 | dn.ofs_in_node); |
| 969 | truncate_data_blocks_range(&dn, 1); |
| 970 | |
| 971 | if (do_replace[i]) { |
| 972 | f2fs_i_blocks_write(src_inode, |
| 973 | 1, false); |
| 974 | f2fs_i_blocks_write(dst_inode, |
| 975 | 1, true); |
| 976 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
| 977 | blkaddr[i], ni.version, true, false); |
| 978 | |
| 979 | do_replace[i] = 0; |
| 980 | } |
| 981 | dn.ofs_in_node++; |
| 982 | i++; |
| 983 | new_size = (dst + i) << PAGE_SHIFT; |
| 984 | if (dst_inode->i_size < new_size) |
| 985 | f2fs_i_size_write(dst_inode, new_size); |
Jaegeuk Kim | 027611e | 2016-11-23 10:51:17 -0800 | [diff] [blame] | 986 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 987 | |
| 988 | f2fs_put_dnode(&dn); |
| 989 | } else { |
| 990 | struct page *psrc, *pdst; |
| 991 | |
| 992 | psrc = get_lock_data_page(src_inode, src + i, true); |
| 993 | if (IS_ERR(psrc)) |
| 994 | return PTR_ERR(psrc); |
| 995 | pdst = get_new_data_page(dst_inode, NULL, dst + i, |
| 996 | true); |
| 997 | if (IS_ERR(pdst)) { |
| 998 | f2fs_put_page(psrc, 1); |
| 999 | return PTR_ERR(pdst); |
| 1000 | } |
| 1001 | f2fs_copy_page(psrc, pdst); |
| 1002 | set_page_dirty(pdst); |
| 1003 | f2fs_put_page(pdst, 1); |
| 1004 | f2fs_put_page(psrc, 1); |
| 1005 | |
| 1006 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
| 1007 | if (ret) |
| 1008 | return ret; |
| 1009 | i++; |
| 1010 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1011 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1012 | return 0; |
| 1013 | } |
| 1014 | |
| 1015 | static int __exchange_data_block(struct inode *src_inode, |
| 1016 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1017 | pgoff_t len, bool full) |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1018 | { |
| 1019 | block_t *src_blkaddr; |
| 1020 | int *do_replace; |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1021 | pgoff_t olen; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1022 | int ret; |
| 1023 | |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1024 | while (len) { |
| 1025 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1026 | |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1027 | src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
| 1028 | if (!src_blkaddr) |
| 1029 | return -ENOMEM; |
| 1030 | |
| 1031 | do_replace = f2fs_kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
| 1032 | if (!do_replace) { |
| 1033 | kvfree(src_blkaddr); |
| 1034 | return -ENOMEM; |
| 1035 | } |
| 1036 | |
| 1037 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
| 1038 | do_replace, src, olen); |
| 1039 | if (ret) |
| 1040 | goto roll_back; |
| 1041 | |
| 1042 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
| 1043 | do_replace, src, dst, olen, full); |
| 1044 | if (ret) |
| 1045 | goto roll_back; |
| 1046 | |
| 1047 | src += olen; |
| 1048 | dst += olen; |
| 1049 | len -= olen; |
| 1050 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1051 | kvfree(src_blkaddr); |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1052 | kvfree(do_replace); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1053 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1054 | return 0; |
| 1055 | |
| 1056 | roll_back: |
| 1057 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); |
| 1058 | kvfree(src_blkaddr); |
| 1059 | kvfree(do_replace); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1060 | return ret; |
| 1061 | } |
| 1062 | |
| 1063 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
| 1064 | { |
| 1065 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1066 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1067 | int ret; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1068 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1069 | f2fs_balance_fs(sbi, true); |
| 1070 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 5f281fa | 2016-07-12 11:07:52 -0700 | [diff] [blame] | 1071 | |
| 1072 | f2fs_drop_extent_tree(inode); |
| 1073 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1074 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
| 1075 | f2fs_unlock_op(sbi); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1076 | return ret; |
| 1077 | } |
| 1078 | |
| 1079 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) |
| 1080 | { |
| 1081 | pgoff_t pg_start, pg_end; |
| 1082 | loff_t new_size; |
| 1083 | int ret; |
| 1084 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1085 | if (offset + len >= i_size_read(inode)) |
| 1086 | return -EINVAL; |
| 1087 | |
| 1088 | /* collapse range should be aligned to block size of f2fs. */ |
| 1089 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 1090 | return -EINVAL; |
| 1091 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1092 | ret = f2fs_convert_inline_inode(inode); |
| 1093 | if (ret) |
| 1094 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 1095 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1096 | pg_start = offset >> PAGE_SHIFT; |
| 1097 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1098 | |
| 1099 | /* write out all dirty pages from offset */ |
| 1100 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1101 | if (ret) |
| 1102 | return ret; |
| 1103 | |
| 1104 | truncate_pagecache(inode, offset); |
| 1105 | |
| 1106 | ret = f2fs_do_collapse(inode, pg_start, pg_end); |
| 1107 | if (ret) |
| 1108 | return ret; |
| 1109 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1110 | /* write out all moved pages, if possible */ |
| 1111 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1112 | truncate_pagecache(inode, offset); |
| 1113 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1114 | new_size = i_size_read(inode) - len; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1115 | truncate_pagecache(inode, new_size); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1116 | |
| 1117 | ret = truncate_blocks(inode, new_size, true); |
| 1118 | if (!ret) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1119 | f2fs_i_size_write(inode, new_size); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1120 | |
| 1121 | return ret; |
| 1122 | } |
| 1123 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1124 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
| 1125 | pgoff_t end) |
| 1126 | { |
| 1127 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
| 1128 | pgoff_t index = start; |
| 1129 | unsigned int ofs_in_node = dn->ofs_in_node; |
| 1130 | blkcnt_t count = 0; |
| 1131 | int ret; |
| 1132 | |
| 1133 | for (; index < end; index++, dn->ofs_in_node++) { |
| 1134 | if (datablock_addr(dn->node_page, dn->ofs_in_node) == NULL_ADDR) |
| 1135 | count++; |
| 1136 | } |
| 1137 | |
| 1138 | dn->ofs_in_node = ofs_in_node; |
| 1139 | ret = reserve_new_blocks(dn, count); |
| 1140 | if (ret) |
| 1141 | return ret; |
| 1142 | |
| 1143 | dn->ofs_in_node = ofs_in_node; |
| 1144 | for (index = start; index < end; index++, dn->ofs_in_node++) { |
| 1145 | dn->data_blkaddr = |
| 1146 | datablock_addr(dn->node_page, dn->ofs_in_node); |
| 1147 | /* |
| 1148 | * reserve_new_blocks will not guarantee entire block |
| 1149 | * allocation. |
| 1150 | */ |
| 1151 | if (dn->data_blkaddr == NULL_ADDR) { |
| 1152 | ret = -ENOSPC; |
| 1153 | break; |
| 1154 | } |
| 1155 | if (dn->data_blkaddr != NEW_ADDR) { |
| 1156 | invalidate_blocks(sbi, dn->data_blkaddr); |
| 1157 | dn->data_blkaddr = NEW_ADDR; |
| 1158 | set_data_blkaddr(dn); |
| 1159 | } |
| 1160 | } |
| 1161 | |
| 1162 | f2fs_update_extent_cache_range(dn, start, 0, index - start); |
| 1163 | |
| 1164 | return ret; |
| 1165 | } |
| 1166 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1167 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
| 1168 | int mode) |
| 1169 | { |
| 1170 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1171 | struct address_space *mapping = inode->i_mapping; |
| 1172 | pgoff_t index, pg_start, pg_end; |
| 1173 | loff_t new_size = i_size_read(inode); |
| 1174 | loff_t off_start, off_end; |
| 1175 | int ret = 0; |
| 1176 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1177 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1178 | if (ret) |
| 1179 | return ret; |
| 1180 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1181 | ret = f2fs_convert_inline_inode(inode); |
| 1182 | if (ret) |
| 1183 | return ret; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1184 | |
| 1185 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
| 1186 | if (ret) |
| 1187 | return ret; |
| 1188 | |
| 1189 | truncate_pagecache_range(inode, offset, offset + len - 1); |
| 1190 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1191 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 1192 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1193 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1194 | off_start = offset & (PAGE_SIZE - 1); |
| 1195 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1196 | |
| 1197 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1198 | ret = fill_zero(inode, pg_start, off_start, |
| 1199 | off_end - off_start); |
| 1200 | if (ret) |
| 1201 | return ret; |
| 1202 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1203 | if (offset + len > new_size) |
| 1204 | new_size = offset + len; |
| 1205 | new_size = max_t(loff_t, new_size, offset + len); |
| 1206 | } else { |
| 1207 | if (off_start) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1208 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1209 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1210 | if (ret) |
| 1211 | return ret; |
| 1212 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1213 | new_size = max_t(loff_t, new_size, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1214 | (loff_t)pg_start << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1215 | } |
| 1216 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1217 | for (index = pg_start; index < pg_end;) { |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1218 | struct dnode_of_data dn; |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1219 | unsigned int end_offset; |
| 1220 | pgoff_t end; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1221 | |
| 1222 | f2fs_lock_op(sbi); |
| 1223 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1224 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 1225 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1226 | if (ret) { |
| 1227 | f2fs_unlock_op(sbi); |
| 1228 | goto out; |
| 1229 | } |
| 1230 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1231 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
| 1232 | end = min(pg_end, end_offset - dn.ofs_in_node + index); |
| 1233 | |
| 1234 | ret = f2fs_do_zero_range(&dn, index, end); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1235 | f2fs_put_dnode(&dn); |
| 1236 | f2fs_unlock_op(sbi); |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1237 | if (ret) |
| 1238 | goto out; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1239 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1240 | index = end; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1241 | new_size = max_t(loff_t, new_size, |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1242 | (loff_t)index << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1243 | } |
| 1244 | |
| 1245 | if (off_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1246 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 1247 | if (ret) |
| 1248 | goto out; |
| 1249 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1250 | new_size = max_t(loff_t, new_size, offset + len); |
| 1251 | } |
| 1252 | } |
| 1253 | |
| 1254 | out: |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 1255 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1256 | f2fs_i_size_write(inode, new_size); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1257 | |
| 1258 | return ret; |
| 1259 | } |
| 1260 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1261 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
| 1262 | { |
| 1263 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1264 | pgoff_t nr, pg_start, pg_end, delta, idx; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1265 | loff_t new_size; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1266 | int ret = 0; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1267 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1268 | new_size = i_size_read(inode) + len; |
| 1269 | if (new_size > inode->i_sb->s_maxbytes) |
| 1270 | return -EFBIG; |
| 1271 | |
| 1272 | if (offset >= i_size_read(inode)) |
| 1273 | return -EINVAL; |
| 1274 | |
| 1275 | /* insert range should be aligned to block size of f2fs. */ |
| 1276 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 1277 | return -EINVAL; |
| 1278 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1279 | ret = f2fs_convert_inline_inode(inode); |
| 1280 | if (ret) |
| 1281 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 1282 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1283 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1284 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1285 | ret = truncate_blocks(inode, i_size_read(inode), true); |
| 1286 | if (ret) |
| 1287 | return ret; |
| 1288 | |
| 1289 | /* write out all dirty pages from offset */ |
| 1290 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1291 | if (ret) |
| 1292 | return ret; |
| 1293 | |
| 1294 | truncate_pagecache(inode, offset); |
| 1295 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1296 | pg_start = offset >> PAGE_SHIFT; |
| 1297 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1298 | delta = pg_end - pg_start; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1299 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1300 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1301 | while (!ret && idx > pg_start) { |
| 1302 | nr = idx - pg_start; |
| 1303 | if (nr > delta) |
| 1304 | nr = delta; |
| 1305 | idx -= nr; |
| 1306 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1307 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 5f281fa | 2016-07-12 11:07:52 -0700 | [diff] [blame] | 1308 | f2fs_drop_extent_tree(inode); |
| 1309 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1310 | ret = __exchange_data_block(inode, inode, idx, |
| 1311 | idx + delta, nr, false); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1312 | f2fs_unlock_op(sbi); |
| 1313 | } |
| 1314 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1315 | /* write out all moved pages, if possible */ |
| 1316 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1317 | truncate_pagecache(inode, offset); |
| 1318 | |
| 1319 | if (!ret) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1320 | f2fs_i_size_write(inode, new_size); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1321 | return ret; |
| 1322 | } |
| 1323 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1324 | static int expand_inode_data(struct inode *inode, loff_t offset, |
| 1325 | loff_t len, int mode) |
| 1326 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1327 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1328 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
| 1329 | pgoff_t pg_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1330 | loff_t new_size = i_size_read(inode); |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1331 | loff_t off_end; |
| 1332 | int ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1333 | |
| 1334 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1335 | if (ret) |
| 1336 | return ret; |
| 1337 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1338 | ret = f2fs_convert_inline_inode(inode); |
| 1339 | if (ret) |
| 1340 | return ret; |
Jaegeuk Kim | 9e09fc8 | 2013-12-27 12:28:59 +0900 | [diff] [blame] | 1341 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1342 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1343 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1344 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1345 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1346 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1347 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
| 1348 | map.m_len = pg_end - map.m_lblk; |
| 1349 | if (off_end) |
| 1350 | map.m_len++; |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1351 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1352 | ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
| 1353 | if (ret) { |
| 1354 | pgoff_t last_off; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1355 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1356 | if (!map.m_len) |
| 1357 | return ret; |
Jaegeuk Kim | 98397ff | 2014-06-13 13:07:31 +0900 | [diff] [blame] | 1358 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1359 | last_off = map.m_lblk + map.m_len - 1; |
| 1360 | |
| 1361 | /* update new size to the failed position */ |
| 1362 | new_size = (last_off == pg_end) ? offset + len: |
| 1363 | (loff_t)(last_off + 1) << PAGE_SHIFT; |
| 1364 | } else { |
| 1365 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1366 | } |
| 1367 | |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 1368 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1369 | f2fs_i_size_write(inode, new_size); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1370 | |
| 1371 | return ret; |
| 1372 | } |
| 1373 | |
| 1374 | static long f2fs_fallocate(struct file *file, int mode, |
| 1375 | loff_t offset, loff_t len) |
| 1376 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1377 | struct inode *inode = file_inode(file); |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1378 | long ret = 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1379 | |
Chao Yu | c998012 | 2015-09-11 14:39:02 +0800 | [diff] [blame] | 1380 | /* f2fs only support ->fallocate for regular file */ |
| 1381 | if (!S_ISREG(inode->i_mode)) |
| 1382 | return -EINVAL; |
| 1383 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1384 | if (f2fs_encrypted_inode(inode) && |
| 1385 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1386 | return -EOPNOTSUPP; |
| 1387 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1388 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1389 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
| 1390 | FALLOC_FL_INSERT_RANGE)) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1391 | return -EOPNOTSUPP; |
| 1392 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1393 | inode_lock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1394 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1395 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
| 1396 | if (offset >= inode->i_size) |
| 1397 | goto out; |
| 1398 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 1399 | ret = punch_hole(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1400 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
| 1401 | ret = f2fs_collapse_range(inode, offset, len); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1402 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
| 1403 | ret = f2fs_zero_range(inode, offset, len, mode); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1404 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
| 1405 | ret = f2fs_insert_range(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1406 | } else { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1407 | ret = expand_inode_data(inode, offset, len, mode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1408 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1409 | |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1410 | if (!ret) { |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 1411 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Jaegeuk Kim | b56ab83 | 2016-06-30 19:09:37 -0700 | [diff] [blame] | 1412 | f2fs_mark_inode_dirty_sync(inode); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1413 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1414 | } |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1415 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1416 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1417 | inode_unlock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1418 | |
Namjae Jeon | c01e285 | 2013-04-23 17:00:52 +0900 | [diff] [blame] | 1419 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1420 | return ret; |
| 1421 | } |
| 1422 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1423 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
| 1424 | { |
Jaegeuk Kim | de5307e | 2016-04-11 11:51:51 -0700 | [diff] [blame] | 1425 | /* |
| 1426 | * f2fs_relase_file is called at every close calls. So we should |
| 1427 | * not drop any inmemory pages by close called by other process. |
| 1428 | */ |
| 1429 | if (!(filp->f_mode & FMODE_WRITE) || |
| 1430 | atomic_read(&inode->i_writecount) != 1) |
| 1431 | return 0; |
| 1432 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1433 | /* some remained atomic pages should discarded */ |
| 1434 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1435 | drop_inmem_pages(inode); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1436 | if (f2fs_is_volatile_file(inode)) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1437 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
| 1438 | set_inode_flag(inode, FI_DROP_CACHE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1439 | filemap_fdatawrite(inode->i_mapping); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1440 | clear_inode_flag(inode, FI_DROP_CACHE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1441 | } |
| 1442 | return 0; |
| 1443 | } |
| 1444 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1445 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
| 1446 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) |
| 1447 | |
| 1448 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) |
| 1449 | { |
| 1450 | if (S_ISDIR(mode)) |
| 1451 | return flags; |
| 1452 | else if (S_ISREG(mode)) |
| 1453 | return flags & F2FS_REG_FLMASK; |
| 1454 | else |
| 1455 | return flags & F2FS_OTHER_FLMASK; |
| 1456 | } |
| 1457 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1458 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1459 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1460 | struct inode *inode = file_inode(filp); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1461 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1462 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
| 1463 | return put_user(flags, (int __user *)arg); |
| 1464 | } |
| 1465 | |
| 1466 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
| 1467 | { |
| 1468 | struct inode *inode = file_inode(filp); |
| 1469 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Sheng Yong | 6949422 | 2016-08-23 20:10:47 +0800 | [diff] [blame] | 1470 | unsigned int flags; |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1471 | unsigned int oldflags; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1472 | int ret; |
| 1473 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1474 | if (!inode_owner_or_capable(inode)) |
| 1475 | return -EACCES; |
| 1476 | |
| 1477 | if (get_user(flags, (int __user *)arg)) |
| 1478 | return -EFAULT; |
| 1479 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1480 | ret = mnt_want_write_file(filp); |
| 1481 | if (ret) |
| 1482 | return ret; |
| 1483 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1484 | flags = f2fs_mask_flags(inode->i_mode, flags); |
| 1485 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1486 | inode_lock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1487 | |
| 1488 | oldflags = fi->i_flags; |
| 1489 | |
| 1490 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
| 1491 | if (!capable(CAP_LINUX_IMMUTABLE)) { |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1492 | inode_unlock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1493 | ret = -EPERM; |
| 1494 | goto out; |
| 1495 | } |
| 1496 | } |
| 1497 | |
| 1498 | flags = flags & FS_FL_USER_MODIFIABLE; |
| 1499 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; |
| 1500 | fi->i_flags = flags; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1501 | inode_unlock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1502 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 1503 | inode->i_ctime = current_time(inode); |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 1504 | f2fs_set_inode_flags(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1505 | out: |
| 1506 | mnt_drop_write_file(filp); |
| 1507 | return ret; |
| 1508 | } |
| 1509 | |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1510 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
| 1511 | { |
| 1512 | struct inode *inode = file_inode(filp); |
| 1513 | |
| 1514 | return put_user(inode->i_generation, (int __user *)arg); |
| 1515 | } |
| 1516 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1517 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
| 1518 | { |
| 1519 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1520 | int ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1521 | |
| 1522 | if (!inode_owner_or_capable(inode)) |
| 1523 | return -EACCES; |
| 1524 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1525 | ret = mnt_want_write_file(filp); |
| 1526 | if (ret) |
| 1527 | return ret; |
| 1528 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1529 | inode_lock(inode); |
| 1530 | |
Chao Yu | 9e222d7 | 2018-04-17 17:51:28 +0800 | [diff] [blame] | 1531 | down_write(&F2FS_I(inode)->dio_rwsem[WRITE]); |
| 1532 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1533 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1534 | goto out; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1535 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1536 | ret = f2fs_convert_inline_inode(inode); |
| 1537 | if (ret) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1538 | goto out; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1539 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1540 | set_inode_flag(inode, FI_ATOMIC_FILE); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1541 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
| 1542 | |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1543 | if (!get_dirty_pages(inode)) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1544 | goto out; |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1545 | |
| 1546 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, |
Jaegeuk Kim | a43e1c4 | 2016-12-02 15:11:32 -0800 | [diff] [blame] | 1547 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1548 | inode->i_ino, get_dirty_pages(inode)); |
| 1549 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); |
| 1550 | if (ret) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1551 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1552 | out: |
Chao Yu | 9e222d7 | 2018-04-17 17:51:28 +0800 | [diff] [blame] | 1553 | up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1554 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1555 | mnt_drop_write_file(filp); |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1556 | return ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1557 | } |
| 1558 | |
| 1559 | static int f2fs_ioc_commit_atomic_write(struct file *filp) |
| 1560 | { |
| 1561 | struct inode *inode = file_inode(filp); |
| 1562 | int ret; |
| 1563 | |
| 1564 | if (!inode_owner_or_capable(inode)) |
| 1565 | return -EACCES; |
| 1566 | |
| 1567 | ret = mnt_want_write_file(filp); |
| 1568 | if (ret) |
| 1569 | return ret; |
| 1570 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1571 | inode_lock(inode); |
| 1572 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1573 | if (f2fs_is_volatile_file(inode)) |
| 1574 | goto err_out; |
| 1575 | |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1576 | if (f2fs_is_atomic_file(inode)) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1577 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1578 | ret = commit_inmem_pages(inode); |
Jaegeuk Kim | 447135a | 2016-01-09 17:08:38 -0800 | [diff] [blame] | 1579 | if (ret) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1580 | set_inode_flag(inode, FI_ATOMIC_FILE); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1581 | goto err_out; |
Jaegeuk Kim | 447135a | 2016-01-09 17:08:38 -0800 | [diff] [blame] | 1582 | } |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1583 | } |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1584 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1585 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1586 | err_out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1587 | inode_unlock(inode); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1588 | mnt_drop_write_file(filp); |
| 1589 | return ret; |
| 1590 | } |
| 1591 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1592 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
| 1593 | { |
| 1594 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1595 | int ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1596 | |
| 1597 | if (!inode_owner_or_capable(inode)) |
| 1598 | return -EACCES; |
| 1599 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1600 | ret = mnt_want_write_file(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1601 | if (ret) |
| 1602 | return ret; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 1603 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1604 | inode_lock(inode); |
| 1605 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1606 | if (f2fs_is_volatile_file(inode)) |
| 1607 | goto out; |
| 1608 | |
| 1609 | ret = f2fs_convert_inline_inode(inode); |
| 1610 | if (ret) |
| 1611 | goto out; |
| 1612 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1613 | set_inode_flag(inode, FI_VOLATILE_FILE); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1614 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1615 | out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1616 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1617 | mnt_drop_write_file(filp); |
| 1618 | return ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1619 | } |
| 1620 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1621 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
| 1622 | { |
| 1623 | struct inode *inode = file_inode(filp); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1624 | int ret; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1625 | |
| 1626 | if (!inode_owner_or_capable(inode)) |
| 1627 | return -EACCES; |
| 1628 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1629 | ret = mnt_want_write_file(filp); |
| 1630 | if (ret) |
| 1631 | return ret; |
| 1632 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1633 | inode_lock(inode); |
| 1634 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1635 | if (!f2fs_is_volatile_file(inode)) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1636 | goto out; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1637 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1638 | if (!f2fs_is_first_block_written(inode)) { |
| 1639 | ret = truncate_partial_data_page(inode, 0, true); |
| 1640 | goto out; |
| 1641 | } |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 1642 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1643 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
| 1644 | out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1645 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1646 | mnt_drop_write_file(filp); |
| 1647 | return ret; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1648 | } |
| 1649 | |
| 1650 | static int f2fs_ioc_abort_volatile_write(struct file *filp) |
| 1651 | { |
| 1652 | struct inode *inode = file_inode(filp); |
| 1653 | int ret; |
| 1654 | |
| 1655 | if (!inode_owner_or_capable(inode)) |
| 1656 | return -EACCES; |
| 1657 | |
| 1658 | ret = mnt_want_write_file(filp); |
| 1659 | if (ret) |
| 1660 | return ret; |
| 1661 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1662 | inode_lock(inode); |
| 1663 | |
Jaegeuk Kim | 26dc3d4 | 2016-04-11 13:15:10 -0700 | [diff] [blame] | 1664 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1665 | drop_inmem_pages(inode); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1666 | if (f2fs_is_volatile_file(inode)) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1667 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1668 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1669 | } |
Jaegeuk Kim | de6a8ec | 2015-06-08 17:51:10 -0700 | [diff] [blame] | 1670 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1671 | inode_unlock(inode); |
| 1672 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1673 | mnt_drop_write_file(filp); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1674 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1675 | return ret; |
| 1676 | } |
| 1677 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1678 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
| 1679 | { |
| 1680 | struct inode *inode = file_inode(filp); |
| 1681 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1682 | struct super_block *sb = sbi->sb; |
| 1683 | __u32 in; |
Dan Carpenter | 363bb03 | 2018-06-20 13:39:53 +0300 | [diff] [blame] | 1684 | int ret = 0; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1685 | |
| 1686 | if (!capable(CAP_SYS_ADMIN)) |
| 1687 | return -EPERM; |
| 1688 | |
| 1689 | if (get_user(in, (__u32 __user *)arg)) |
| 1690 | return -EFAULT; |
| 1691 | |
Sahitya Tummala | bce7f72 | 2018-05-18 11:51:52 +0530 | [diff] [blame] | 1692 | if (in != F2FS_GOING_DOWN_FULLSYNC) { |
| 1693 | ret = mnt_want_write_file(filp); |
| 1694 | if (ret) |
| 1695 | return ret; |
| 1696 | } |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1697 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1698 | switch (in) { |
| 1699 | case F2FS_GOING_DOWN_FULLSYNC: |
| 1700 | sb = freeze_bdev(sb->s_bdev); |
| 1701 | if (sb && !IS_ERR(sb)) { |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1702 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1703 | thaw_bdev(sb->s_bdev, sb); |
| 1704 | } |
| 1705 | break; |
| 1706 | case F2FS_GOING_DOWN_METASYNC: |
| 1707 | /* do checkpoint only */ |
| 1708 | f2fs_sync_fs(sb, 1); |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1709 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1710 | break; |
| 1711 | case F2FS_GOING_DOWN_NOSYNC: |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1712 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1713 | break; |
Jaegeuk Kim | c912a82 | 2015-10-07 09:46:37 -0700 | [diff] [blame] | 1714 | case F2FS_GOING_DOWN_METAFLUSH: |
| 1715 | sync_meta_pages(sbi, META, LONG_MAX); |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1716 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | c912a82 | 2015-10-07 09:46:37 -0700 | [diff] [blame] | 1717 | break; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1718 | default: |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1719 | ret = -EINVAL; |
| 1720 | goto out; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1721 | } |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1722 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1723 | out: |
Sahitya Tummala | bce7f72 | 2018-05-18 11:51:52 +0530 | [diff] [blame] | 1724 | if (in != F2FS_GOING_DOWN_FULLSYNC) |
| 1725 | mnt_drop_write_file(filp); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1726 | return ret; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1727 | } |
| 1728 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1729 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
| 1730 | { |
| 1731 | struct inode *inode = file_inode(filp); |
| 1732 | struct super_block *sb = inode->i_sb; |
| 1733 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
| 1734 | struct fstrim_range range; |
| 1735 | int ret; |
| 1736 | |
| 1737 | if (!capable(CAP_SYS_ADMIN)) |
| 1738 | return -EPERM; |
| 1739 | |
| 1740 | if (!blk_queue_discard(q)) |
| 1741 | return -EOPNOTSUPP; |
| 1742 | |
| 1743 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
| 1744 | sizeof(range))) |
| 1745 | return -EFAULT; |
| 1746 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1747 | ret = mnt_want_write_file(filp); |
| 1748 | if (ret) |
| 1749 | return ret; |
| 1750 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1751 | range.minlen = max((unsigned int)range.minlen, |
| 1752 | q->limits.discard_granularity); |
| 1753 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1754 | mnt_drop_write_file(filp); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1755 | if (ret < 0) |
| 1756 | return ret; |
| 1757 | |
| 1758 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
| 1759 | sizeof(range))) |
| 1760 | return -EFAULT; |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1761 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1762 | return 0; |
| 1763 | } |
| 1764 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1765 | static bool uuid_is_nonzero(__u8 u[16]) |
| 1766 | { |
| 1767 | int i; |
| 1768 | |
| 1769 | for (i = 0; i < 16; i++) |
| 1770 | if (u[i]) |
| 1771 | return true; |
| 1772 | return false; |
| 1773 | } |
| 1774 | |
| 1775 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) |
| 1776 | { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1777 | struct fscrypt_policy policy; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1778 | struct inode *inode = file_inode(filp); |
| 1779 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1780 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
| 1781 | sizeof(policy))) |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1782 | return -EFAULT; |
| 1783 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1784 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1785 | |
Eric Biggers | ba63f23 | 2016-09-08 14:20:38 -0700 | [diff] [blame] | 1786 | return fscrypt_process_policy(filp, &policy); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1787 | } |
| 1788 | |
| 1789 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) |
| 1790 | { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1791 | struct fscrypt_policy policy; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1792 | struct inode *inode = file_inode(filp); |
| 1793 | int err; |
| 1794 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1795 | err = fscrypt_get_policy(inode, &policy); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1796 | if (err) |
| 1797 | return err; |
| 1798 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1799 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1800 | return -EFAULT; |
| 1801 | return 0; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1802 | } |
| 1803 | |
| 1804 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) |
| 1805 | { |
| 1806 | struct inode *inode = file_inode(filp); |
| 1807 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1808 | int err; |
| 1809 | |
| 1810 | if (!f2fs_sb_has_crypto(inode->i_sb)) |
| 1811 | return -EOPNOTSUPP; |
| 1812 | |
| 1813 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) |
| 1814 | goto got_it; |
| 1815 | |
| 1816 | err = mnt_want_write_file(filp); |
| 1817 | if (err) |
| 1818 | return err; |
| 1819 | |
| 1820 | /* update superblock with uuid */ |
| 1821 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); |
| 1822 | |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 1823 | err = f2fs_commit_super(sbi, false); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1824 | if (err) { |
| 1825 | /* undo new data */ |
| 1826 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); |
Chao Yu | e8240f6 | 2015-12-15 17:19:26 +0800 | [diff] [blame] | 1827 | mnt_drop_write_file(filp); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1828 | return err; |
| 1829 | } |
Chao Yu | e8240f6 | 2015-12-15 17:19:26 +0800 | [diff] [blame] | 1830 | mnt_drop_write_file(filp); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1831 | got_it: |
| 1832 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, |
| 1833 | 16)) |
| 1834 | return -EFAULT; |
| 1835 | return 0; |
| 1836 | } |
| 1837 | |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1838 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
| 1839 | { |
| 1840 | struct inode *inode = file_inode(filp); |
| 1841 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1842 | __u32 sync; |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1843 | int ret; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1844 | |
| 1845 | if (!capable(CAP_SYS_ADMIN)) |
| 1846 | return -EPERM; |
| 1847 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1848 | if (get_user(sync, (__u32 __user *)arg)) |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1849 | return -EFAULT; |
| 1850 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1851 | if (f2fs_readonly(sbi->sb)) |
| 1852 | return -EROFS; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1853 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1854 | ret = mnt_want_write_file(filp); |
| 1855 | if (ret) |
| 1856 | return ret; |
| 1857 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1858 | if (!sync) { |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1859 | if (!mutex_trylock(&sbi->gc_mutex)) { |
| 1860 | ret = -EBUSY; |
| 1861 | goto out; |
| 1862 | } |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1863 | } else { |
| 1864 | mutex_lock(&sbi->gc_mutex); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1865 | } |
| 1866 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1867 | ret = f2fs_gc(sbi, sync); |
| 1868 | out: |
| 1869 | mnt_drop_write_file(filp); |
| 1870 | return ret; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1871 | } |
| 1872 | |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1873 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
| 1874 | { |
| 1875 | struct inode *inode = file_inode(filp); |
| 1876 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1877 | int ret; |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1878 | |
| 1879 | if (!capable(CAP_SYS_ADMIN)) |
| 1880 | return -EPERM; |
| 1881 | |
| 1882 | if (f2fs_readonly(sbi->sb)) |
| 1883 | return -EROFS; |
| 1884 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1885 | ret = mnt_want_write_file(filp); |
| 1886 | if (ret) |
| 1887 | return ret; |
| 1888 | |
| 1889 | ret = f2fs_sync_fs(sbi->sb, 1); |
| 1890 | |
| 1891 | mnt_drop_write_file(filp); |
| 1892 | return ret; |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1893 | } |
| 1894 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1895 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
| 1896 | struct file *filp, |
| 1897 | struct f2fs_defragment *range) |
| 1898 | { |
| 1899 | struct inode *inode = file_inode(filp); |
Chao Yu | da85985 | 2016-01-26 15:42:58 +0800 | [diff] [blame] | 1900 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1901 | struct extent_info ei; |
| 1902 | pgoff_t pg_start, pg_end; |
Chao Yu | 3519e3f | 2015-12-01 11:56:52 +0800 | [diff] [blame] | 1903 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1904 | unsigned int total = 0, sec_num; |
Chao Yu | 3519e3f | 2015-12-01 11:56:52 +0800 | [diff] [blame] | 1905 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1906 | block_t blk_end = 0; |
| 1907 | bool fragmented = false; |
| 1908 | int err; |
| 1909 | |
| 1910 | /* if in-place-update policy is enabled, don't waste time here */ |
| 1911 | if (need_inplace_update(inode)) |
| 1912 | return -EINVAL; |
| 1913 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1914 | pg_start = range->start >> PAGE_SHIFT; |
| 1915 | pg_end = (range->start + range->len) >> PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1916 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1917 | f2fs_balance_fs(sbi, true); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1918 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1919 | inode_lock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1920 | |
| 1921 | /* writeback all dirty pages in the range */ |
| 1922 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, |
Fan Li | d8fe4f0 | 2015-12-14 13:34:00 +0800 | [diff] [blame] | 1923 | range->start + range->len - 1); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1924 | if (err) |
| 1925 | goto out; |
| 1926 | |
| 1927 | /* |
| 1928 | * lookup mapping info in extent cache, skip defragmenting if physical |
| 1929 | * block addresses are continuous. |
| 1930 | */ |
| 1931 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { |
| 1932 | if (ei.fofs + ei.len >= pg_end) |
| 1933 | goto out; |
| 1934 | } |
| 1935 | |
| 1936 | map.m_lblk = pg_start; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1937 | |
| 1938 | /* |
| 1939 | * lookup mapping info in dnode page cache, skip defragmenting if all |
| 1940 | * physical block addresses are continuous even if there are hole(s) |
| 1941 | * in logical blocks. |
| 1942 | */ |
| 1943 | while (map.m_lblk < pg_end) { |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 1944 | map.m_len = pg_end - map.m_lblk; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1945 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
| 1946 | if (err) |
| 1947 | goto out; |
| 1948 | |
| 1949 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
| 1950 | map.m_lblk++; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1951 | continue; |
| 1952 | } |
| 1953 | |
| 1954 | if (blk_end && blk_end != map.m_pblk) { |
| 1955 | fragmented = true; |
| 1956 | break; |
| 1957 | } |
| 1958 | blk_end = map.m_pblk + map.m_len; |
| 1959 | |
| 1960 | map.m_lblk += map.m_len; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1961 | } |
| 1962 | |
| 1963 | if (!fragmented) |
| 1964 | goto out; |
| 1965 | |
| 1966 | map.m_lblk = pg_start; |
| 1967 | map.m_len = pg_end - pg_start; |
| 1968 | |
| 1969 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; |
| 1970 | |
| 1971 | /* |
| 1972 | * make sure there are enough free section for LFS allocation, this can |
| 1973 | * avoid defragment running in SSR mode when free section are allocated |
| 1974 | * intensively |
| 1975 | */ |
Jaegeuk Kim | 7f3037a | 2016-09-01 12:02:51 -0700 | [diff] [blame] | 1976 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1977 | err = -EAGAIN; |
| 1978 | goto out; |
| 1979 | } |
| 1980 | |
| 1981 | while (map.m_lblk < pg_end) { |
| 1982 | pgoff_t idx; |
| 1983 | int cnt = 0; |
| 1984 | |
| 1985 | do_map: |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 1986 | map.m_len = pg_end - map.m_lblk; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1987 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
| 1988 | if (err) |
| 1989 | goto clear_out; |
| 1990 | |
| 1991 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
| 1992 | map.m_lblk++; |
| 1993 | continue; |
| 1994 | } |
| 1995 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1996 | set_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1997 | |
| 1998 | idx = map.m_lblk; |
| 1999 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { |
| 2000 | struct page *page; |
| 2001 | |
| 2002 | page = get_lock_data_page(inode, idx, true); |
| 2003 | if (IS_ERR(page)) { |
| 2004 | err = PTR_ERR(page); |
| 2005 | goto clear_out; |
| 2006 | } |
| 2007 | |
| 2008 | set_page_dirty(page); |
| 2009 | f2fs_put_page(page, 1); |
| 2010 | |
| 2011 | idx++; |
| 2012 | cnt++; |
| 2013 | total++; |
| 2014 | } |
| 2015 | |
| 2016 | map.m_lblk = idx; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2017 | |
| 2018 | if (idx < pg_end && cnt < blk_per_seg) |
| 2019 | goto do_map; |
| 2020 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2021 | clear_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2022 | |
| 2023 | err = filemap_fdatawrite(inode->i_mapping); |
| 2024 | if (err) |
| 2025 | goto out; |
| 2026 | } |
| 2027 | clear_out: |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2028 | clear_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2029 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 2030 | inode_unlock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2031 | if (!err) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 2032 | range->len = (u64)total << PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2033 | return err; |
| 2034 | } |
| 2035 | |
| 2036 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) |
| 2037 | { |
| 2038 | struct inode *inode = file_inode(filp); |
| 2039 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 2040 | struct f2fs_defragment range; |
| 2041 | int err; |
| 2042 | |
| 2043 | if (!capable(CAP_SYS_ADMIN)) |
| 2044 | return -EPERM; |
| 2045 | |
| 2046 | if (!S_ISREG(inode->i_mode)) |
| 2047 | return -EINVAL; |
| 2048 | |
| 2049 | err = mnt_want_write_file(filp); |
| 2050 | if (err) |
| 2051 | return err; |
| 2052 | |
| 2053 | if (f2fs_readonly(sbi->sb)) { |
| 2054 | err = -EROFS; |
| 2055 | goto out; |
| 2056 | } |
| 2057 | |
| 2058 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, |
| 2059 | sizeof(range))) { |
| 2060 | err = -EFAULT; |
| 2061 | goto out; |
| 2062 | } |
| 2063 | |
| 2064 | /* verify alignment of offset & size */ |
| 2065 | if (range.start & (F2FS_BLKSIZE - 1) || |
| 2066 | range.len & (F2FS_BLKSIZE - 1)) { |
| 2067 | err = -EINVAL; |
| 2068 | goto out; |
| 2069 | } |
| 2070 | |
| 2071 | err = f2fs_defragment_range(sbi, filp, &range); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 2072 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2073 | if (err < 0) |
| 2074 | goto out; |
| 2075 | |
| 2076 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, |
| 2077 | sizeof(range))) |
| 2078 | err = -EFAULT; |
| 2079 | out: |
| 2080 | mnt_drop_write_file(filp); |
| 2081 | return err; |
| 2082 | } |
| 2083 | |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2084 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
| 2085 | struct file *file_out, loff_t pos_out, size_t len) |
| 2086 | { |
| 2087 | struct inode *src = file_inode(file_in); |
| 2088 | struct inode *dst = file_inode(file_out); |
| 2089 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); |
| 2090 | size_t olen = len, dst_max_i_size = 0; |
| 2091 | size_t dst_osize; |
| 2092 | int ret; |
| 2093 | |
| 2094 | if (file_in->f_path.mnt != file_out->f_path.mnt || |
| 2095 | src->i_sb != dst->i_sb) |
| 2096 | return -EXDEV; |
| 2097 | |
| 2098 | if (unlikely(f2fs_readonly(src->i_sb))) |
| 2099 | return -EROFS; |
| 2100 | |
Chao Yu | fe8494b | 2016-08-04 20:13:02 +0800 | [diff] [blame] | 2101 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
| 2102 | return -EINVAL; |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2103 | |
| 2104 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) |
| 2105 | return -EOPNOTSUPP; |
| 2106 | |
Fan Li | d95fd91 | 2016-09-13 11:35:42 +0800 | [diff] [blame] | 2107 | if (src == dst) { |
| 2108 | if (pos_in == pos_out) |
| 2109 | return 0; |
| 2110 | if (pos_out > pos_in && pos_out < pos_in + len) |
| 2111 | return -EINVAL; |
| 2112 | } |
| 2113 | |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2114 | inode_lock(src); |
Chao Yu | 20a3d61 | 2016-08-04 20:13:03 +0800 | [diff] [blame] | 2115 | if (src != dst) { |
| 2116 | if (!inode_trylock(dst)) { |
| 2117 | ret = -EBUSY; |
| 2118 | goto out; |
| 2119 | } |
| 2120 | } |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2121 | |
| 2122 | ret = -EINVAL; |
| 2123 | if (pos_in + len > src->i_size || pos_in + len < pos_in) |
| 2124 | goto out_unlock; |
| 2125 | if (len == 0) |
| 2126 | olen = len = src->i_size - pos_in; |
| 2127 | if (pos_in + len == src->i_size) |
| 2128 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; |
| 2129 | if (len == 0) { |
| 2130 | ret = 0; |
| 2131 | goto out_unlock; |
| 2132 | } |
| 2133 | |
| 2134 | dst_osize = dst->i_size; |
| 2135 | if (pos_out + olen > dst->i_size) |
| 2136 | dst_max_i_size = pos_out + olen; |
| 2137 | |
| 2138 | /* verify the end result is block aligned */ |
| 2139 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || |
| 2140 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || |
| 2141 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) |
| 2142 | goto out_unlock; |
| 2143 | |
| 2144 | ret = f2fs_convert_inline_inode(src); |
| 2145 | if (ret) |
| 2146 | goto out_unlock; |
| 2147 | |
| 2148 | ret = f2fs_convert_inline_inode(dst); |
| 2149 | if (ret) |
| 2150 | goto out_unlock; |
| 2151 | |
| 2152 | /* write out all dirty pages from offset */ |
| 2153 | ret = filemap_write_and_wait_range(src->i_mapping, |
| 2154 | pos_in, pos_in + len); |
| 2155 | if (ret) |
| 2156 | goto out_unlock; |
| 2157 | |
| 2158 | ret = filemap_write_and_wait_range(dst->i_mapping, |
| 2159 | pos_out, pos_out + len); |
| 2160 | if (ret) |
| 2161 | goto out_unlock; |
| 2162 | |
| 2163 | f2fs_balance_fs(sbi, true); |
| 2164 | f2fs_lock_op(sbi); |
Fan Li | 61e4da1 | 2016-09-10 11:19:37 +0800 | [diff] [blame] | 2165 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
| 2166 | pos_out >> F2FS_BLKSIZE_BITS, |
| 2167 | len >> F2FS_BLKSIZE_BITS, false); |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2168 | |
| 2169 | if (!ret) { |
| 2170 | if (dst_max_i_size) |
| 2171 | f2fs_i_size_write(dst, dst_max_i_size); |
| 2172 | else if (dst_osize != dst->i_size) |
| 2173 | f2fs_i_size_write(dst, dst_osize); |
| 2174 | } |
| 2175 | f2fs_unlock_op(sbi); |
| 2176 | out_unlock: |
| 2177 | if (src != dst) |
| 2178 | inode_unlock(dst); |
Chao Yu | 20a3d61 | 2016-08-04 20:13:03 +0800 | [diff] [blame] | 2179 | out: |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2180 | inode_unlock(src); |
| 2181 | return ret; |
| 2182 | } |
| 2183 | |
| 2184 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) |
| 2185 | { |
| 2186 | struct f2fs_move_range range; |
| 2187 | struct fd dst; |
| 2188 | int err; |
| 2189 | |
| 2190 | if (!(filp->f_mode & FMODE_READ) || |
| 2191 | !(filp->f_mode & FMODE_WRITE)) |
| 2192 | return -EBADF; |
| 2193 | |
| 2194 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, |
| 2195 | sizeof(range))) |
| 2196 | return -EFAULT; |
| 2197 | |
| 2198 | dst = fdget(range.dst_fd); |
| 2199 | if (!dst.file) |
| 2200 | return -EBADF; |
| 2201 | |
| 2202 | if (!(dst.file->f_mode & FMODE_WRITE)) { |
| 2203 | err = -EBADF; |
| 2204 | goto err_out; |
| 2205 | } |
| 2206 | |
| 2207 | err = mnt_want_write_file(filp); |
| 2208 | if (err) |
| 2209 | goto err_out; |
| 2210 | |
| 2211 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, |
| 2212 | range.pos_out, range.len); |
| 2213 | |
| 2214 | mnt_drop_write_file(filp); |
| 2215 | |
| 2216 | if (copy_to_user((struct f2fs_move_range __user *)arg, |
| 2217 | &range, sizeof(range))) |
| 2218 | err = -EFAULT; |
| 2219 | err_out: |
| 2220 | fdput(dst); |
| 2221 | return err; |
| 2222 | } |
| 2223 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2224 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
| 2225 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2226 | switch (cmd) { |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 2227 | case F2FS_IOC_GETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2228 | return f2fs_ioc_getflags(filp, arg); |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 2229 | case F2FS_IOC_SETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2230 | return f2fs_ioc_setflags(filp, arg); |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 2231 | case F2FS_IOC_GETVERSION: |
| 2232 | return f2fs_ioc_getversion(filp, arg); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 2233 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 2234 | return f2fs_ioc_start_atomic_write(filp); |
| 2235 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 2236 | return f2fs_ioc_commit_atomic_write(filp); |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 2237 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 2238 | return f2fs_ioc_start_volatile_write(filp); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 2239 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 2240 | return f2fs_ioc_release_volatile_write(filp); |
| 2241 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 2242 | return f2fs_ioc_abort_volatile_write(filp); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 2243 | case F2FS_IOC_SHUTDOWN: |
| 2244 | return f2fs_ioc_shutdown(filp, arg); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 2245 | case FITRIM: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2246 | return f2fs_ioc_fitrim(filp, arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 2247 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 2248 | return f2fs_ioc_set_encryption_policy(filp, arg); |
| 2249 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 2250 | return f2fs_ioc_get_encryption_policy(filp, arg); |
| 2251 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 2252 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2253 | case F2FS_IOC_GARBAGE_COLLECT: |
| 2254 | return f2fs_ioc_gc(filp, arg); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 2255 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 2256 | return f2fs_ioc_write_checkpoint(filp, arg); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2257 | case F2FS_IOC_DEFRAGMENT: |
| 2258 | return f2fs_ioc_defragment(filp, arg); |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2259 | case F2FS_IOC_MOVE_RANGE: |
| 2260 | return f2fs_ioc_move_range(filp, arg); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2261 | default: |
| 2262 | return -ENOTTY; |
| 2263 | } |
| 2264 | } |
| 2265 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2266 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
| 2267 | { |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2268 | struct file *file = iocb->ki_filp; |
| 2269 | struct inode *inode = file_inode(file); |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 2270 | struct blk_plug plug; |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2271 | ssize_t ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2272 | |
| 2273 | if (f2fs_encrypted_inode(inode) && |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 2274 | !fscrypt_has_encryption_key(inode) && |
| 2275 | fscrypt_get_encryption_info(inode)) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2276 | return -EACCES; |
| 2277 | |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2278 | inode_lock(inode); |
| 2279 | ret = generic_write_checks(iocb, from); |
| 2280 | if (ret > 0) { |
| 2281 | ret = f2fs_preallocate_blocks(iocb, from); |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 2282 | if (!ret) { |
| 2283 | blk_start_plug(&plug); |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2284 | ret = __generic_file_write_iter(iocb, from); |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 2285 | blk_finish_plug(&plug); |
| 2286 | } |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2287 | } |
| 2288 | inode_unlock(inode); |
| 2289 | |
Christoph Hellwig | e259221 | 2016-04-07 08:52:01 -0700 | [diff] [blame] | 2290 | if (ret > 0) |
| 2291 | ret = generic_write_sync(iocb, ret); |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2292 | return ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2293 | } |
| 2294 | |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2295 | #ifdef CONFIG_COMPAT |
| 2296 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 2297 | { |
| 2298 | switch (cmd) { |
| 2299 | case F2FS_IOC32_GETFLAGS: |
| 2300 | cmd = F2FS_IOC_GETFLAGS; |
| 2301 | break; |
| 2302 | case F2FS_IOC32_SETFLAGS: |
| 2303 | cmd = F2FS_IOC_SETFLAGS; |
| 2304 | break; |
Chao Yu | 04ef4b6 | 2015-11-10 18:44:20 +0800 | [diff] [blame] | 2305 | case F2FS_IOC32_GETVERSION: |
| 2306 | cmd = F2FS_IOC_GETVERSION; |
| 2307 | break; |
| 2308 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 2309 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 2310 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 2311 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 2312 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 2313 | case F2FS_IOC_SHUTDOWN: |
| 2314 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 2315 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 2316 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 2317 | case F2FS_IOC_GARBAGE_COLLECT: |
| 2318 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 2319 | case F2FS_IOC_DEFRAGMENT: |
| 2320 | break; |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2321 | case F2FS_IOC_MOVE_RANGE: |
| 2322 | break; |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2323 | default: |
| 2324 | return -ENOIOCTLCMD; |
| 2325 | } |
| 2326 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
| 2327 | } |
| 2328 | #endif |
| 2329 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2330 | const struct file_operations f2fs_file_operations = { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 2331 | .llseek = f2fs_llseek, |
Al Viro | aad4f8b | 2014-04-02 14:33:16 -0400 | [diff] [blame] | 2332 | .read_iter = generic_file_read_iter, |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2333 | .write_iter = f2fs_file_write_iter, |
| 2334 | .open = f2fs_file_open, |
Jaegeuk Kim | 1266223 | 2014-12-05 14:37:37 -0800 | [diff] [blame] | 2335 | .release = f2fs_release_file, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2336 | .mmap = f2fs_file_mmap, |
| 2337 | .fsync = f2fs_sync_file, |
| 2338 | .fallocate = f2fs_fallocate, |
| 2339 | .unlocked_ioctl = f2fs_ioctl, |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2340 | #ifdef CONFIG_COMPAT |
| 2341 | .compat_ioctl = f2fs_compat_ioctl, |
| 2342 | #endif |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2343 | .splice_read = generic_file_splice_read, |
Al Viro | 8d02076 | 2014-04-05 04:27:08 -0400 | [diff] [blame] | 2344 | .splice_write = iter_file_splice_write, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2345 | }; |