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> |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 23 | #include <linux/random.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 24 | |
| 25 | #include "f2fs.h" |
| 26 | #include "node.h" |
| 27 | #include "segment.h" |
| 28 | #include "xattr.h" |
| 29 | #include "acl.h" |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 30 | #include "gc.h" |
Jaegeuk Kim | db9f7c1 | 2014-12-17 20:04:08 -0800 | [diff] [blame] | 31 | #include "trace.h" |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 32 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 33 | |
| 34 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, |
| 35 | struct vm_fault *vmf) |
| 36 | { |
| 37 | struct page *page = vmf->page; |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 38 | struct inode *inode = file_inode(vma->vm_file); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 39 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 40 | struct dnode_of_data dn; |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 41 | int err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 42 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 43 | sb_start_pagefault(inode->i_sb); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 44 | |
| 45 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); |
Jaegeuk Kim | b067ba1 | 2014-08-07 16:32:25 -0700 | [diff] [blame] | 46 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 47 | /* block allocation */ |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 48 | f2fs_lock_op(sbi); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 49 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | 9ba69cf | 2014-10-17 20:33:55 -0700 | [diff] [blame] | 50 | err = f2fs_reserve_block(&dn, page->index); |
| 51 | if (err) { |
| 52 | f2fs_unlock_op(sbi); |
| 53 | goto out; |
| 54 | } |
| 55 | f2fs_put_dnode(&dn); |
| 56 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 57 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 58 | f2fs_balance_fs(sbi, dn.node_changed); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 59 | |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 60 | file_update_time(vma->vm_file); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 61 | lock_page(page); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 62 | if (unlikely(page->mapping != inode->i_mapping || |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 63 | page_offset(page) > i_size_read(inode) || |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 64 | !PageUptodate(page))) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 65 | unlock_page(page); |
| 66 | err = -EFAULT; |
| 67 | goto out; |
| 68 | } |
| 69 | |
| 70 | /* |
| 71 | * check to see if the page is mapped already (no holes) |
| 72 | */ |
| 73 | if (PageMappedToDisk(page)) |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 74 | goto mapped; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 75 | |
| 76 | /* page is wholly or partially inside EOF */ |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 77 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 78 | i_size_read(inode)) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 79 | unsigned offset; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 80 | offset = i_size_read(inode) & ~PAGE_MASK; |
| 81 | zero_user_segment(page, offset, PAGE_SIZE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 82 | } |
| 83 | set_page_dirty(page); |
| 84 | SetPageUptodate(page); |
| 85 | |
Jaegeuk Kim | e943a10 | 2013-10-25 14:26:31 +0900 | [diff] [blame] | 86 | trace_f2fs_vm_page_mkwrite(page, DATA); |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 87 | mapped: |
| 88 | /* fill the page */ |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 89 | f2fs_wait_on_page_writeback(page, DATA, false); |
Chao Yu | 08b39fb | 2015-10-08 13:27:34 +0800 | [diff] [blame] | 90 | |
| 91 | /* wait for GCed encrypted page writeback */ |
| 92 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) |
| 93 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); |
| 94 | |
Chao Yu | 5b33912 | 2015-07-13 17:43:19 +0800 | [diff] [blame] | 95 | /* if gced page is attached, don't write to cold segment */ |
| 96 | clear_cold_data(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 97 | out: |
| 98 | sb_end_pagefault(inode->i_sb); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 99 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 100 | return block_page_mkwrite_return(err); |
| 101 | } |
| 102 | |
| 103 | static const struct vm_operations_struct f2fs_file_vm_ops = { |
Jaegeuk Kim | 692bb55 | 2013-01-17 18:37:41 +0900 | [diff] [blame] | 104 | .fault = filemap_fault, |
Kirill A. Shutemov | f182036 | 2014-04-07 15:37:19 -0700 | [diff] [blame] | 105 | .map_pages = filemap_map_pages, |
Jaegeuk Kim | 692bb55 | 2013-01-17 18:37:41 +0900 | [diff] [blame] | 106 | .page_mkwrite = f2fs_vm_page_mkwrite, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 107 | }; |
| 108 | |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 109 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
| 110 | { |
| 111 | struct dentry *dentry; |
| 112 | |
| 113 | inode = igrab(inode); |
| 114 | dentry = d_find_any_alias(inode); |
| 115 | iput(inode); |
| 116 | if (!dentry) |
| 117 | return 0; |
| 118 | |
Jaegeuk Kim | e7d5545 | 2015-04-29 17:02:18 -0700 | [diff] [blame] | 119 | if (update_dent_inode(inode, inode, &dentry->d_name)) { |
Jaegeuk Kim | f0947e5 | 2013-07-22 22:12:56 +0900 | [diff] [blame] | 120 | dput(dentry); |
| 121 | return 0; |
| 122 | } |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 123 | |
Jaegeuk Kim | f0947e5 | 2013-07-22 22:12:56 +0900 | [diff] [blame] | 124 | *pino = parent_ino(dentry); |
| 125 | dput(dentry); |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 126 | return 1; |
| 127 | } |
| 128 | |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 129 | static inline bool need_do_checkpoint(struct inode *inode) |
| 130 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 131 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 132 | bool need_cp = false; |
| 133 | |
| 134 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) |
| 135 | need_cp = true; |
Jaegeuk Kim | e7d5545 | 2015-04-29 17:02:18 -0700 | [diff] [blame] | 136 | else if (file_enc_name(inode) && need_dentry_mark(sbi, inode->i_ino)) |
| 137 | need_cp = true; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 138 | else if (file_wrong_pino(inode)) |
| 139 | need_cp = true; |
| 140 | else if (!space_for_roll_forward(sbi)) |
| 141 | need_cp = true; |
| 142 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
| 143 | need_cp = true; |
| 144 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) |
| 145 | need_cp = true; |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 146 | else if (test_opt(sbi, FASTBOOT)) |
| 147 | need_cp = true; |
Jaegeuk Kim | a344b9f | 2014-11-05 20:05:53 -0800 | [diff] [blame] | 148 | else if (sbi->active_logs == 2) |
| 149 | need_cp = true; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 150 | |
| 151 | return need_cp; |
| 152 | } |
| 153 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 154 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
| 155 | { |
| 156 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); |
| 157 | bool ret = false; |
| 158 | /* But we need to avoid that there are some inode updates */ |
| 159 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) |
| 160 | ret = true; |
| 161 | f2fs_put_page(i, 0); |
| 162 | return ret; |
| 163 | } |
| 164 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 165 | static void try_to_fix_pino(struct inode *inode) |
| 166 | { |
| 167 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 168 | nid_t pino; |
| 169 | |
| 170 | down_write(&fi->i_sem); |
| 171 | fi->xattr_ver = 0; |
| 172 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
| 173 | get_parent_ino(inode, &pino)) { |
| 174 | fi->i_pino = pino; |
| 175 | file_got_pino(inode); |
| 176 | up_write(&fi->i_sem); |
| 177 | |
| 178 | mark_inode_dirty_sync(inode); |
| 179 | f2fs_write_inode(inode, NULL); |
| 180 | } else { |
| 181 | up_write(&fi->i_sem); |
| 182 | } |
| 183 | } |
| 184 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 185 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
| 186 | { |
| 187 | struct inode *inode = file->f_mapping->host; |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 188 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 189 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 190 | nid_t ino = inode->i_ino; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 191 | int ret = 0; |
| 192 | bool need_cp = false; |
| 193 | struct writeback_control wbc = { |
Jaegeuk Kim | c81bf1c | 2014-03-03 11:28:40 +0900 | [diff] [blame] | 194 | .sync_mode = WB_SYNC_ALL, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 195 | .nr_to_write = LONG_MAX, |
| 196 | .for_reclaim = 0, |
| 197 | }; |
| 198 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 199 | if (unlikely(f2fs_readonly(inode->i_sb))) |
Namjae Jeon | 1fa95b0 | 2012-12-01 10:56:01 +0900 | [diff] [blame] | 200 | return 0; |
| 201 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 202 | trace_f2fs_sync_file_enter(inode); |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 203 | |
| 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 | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 206 | set_inode_flag(fi, 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 | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 208 | clear_inode_flag(fi, FI_NEED_IPU); |
| 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 | 2286c02 | 2015-08-15 21:51:05 -0700 | [diff] [blame] | 216 | if (!datasync) { |
| 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 | */ |
| 224 | if (!is_inode_flag_set(fi, 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 | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 231 | if (is_inode_flag_set(fi, 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 | */ |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 241 | down_read(&fi->i_sem); |
| 242 | need_cp = need_do_checkpoint(inode); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 243 | up_read(&fi->i_sem); |
| 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 | cff2852 | 2015-03-02 10:48:56 -0800 | [diff] [blame] | 254 | clear_inode_flag(fi, FI_APPEND_WRITE); |
| 255 | clear_inode_flag(fi, 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: |
| 259 | sync_node_pages(sbi, ino, &wbc); |
| 260 | |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 261 | /* if cp_error was enabled, we should avoid infinite loop */ |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 262 | if (unlikely(f2fs_cp_error(sbi))) { |
| 263 | ret = -EIO; |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 264 | goto out; |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 265 | } |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 266 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 267 | if (need_inode_block_update(sbi, ino)) { |
| 268 | mark_inode_dirty_sync(inode); |
| 269 | f2fs_write_inode(inode, NULL); |
| 270 | goto sync_nodes; |
| 271 | } |
| 272 | |
| 273 | ret = wait_on_node_pages_writeback(sbi, ino); |
| 274 | if (ret) |
| 275 | goto out; |
| 276 | |
| 277 | /* once recovery info is written, don't need to tack this */ |
Chao Yu | a49324f | 2015-12-15 13:29:47 +0800 | [diff] [blame] | 278 | remove_ino_entry(sbi, ino, APPEND_INO); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 279 | clear_inode_flag(fi, FI_APPEND_WRITE); |
| 280 | flush_out: |
Chao Yu | a49324f | 2015-12-15 13:29:47 +0800 | [diff] [blame] | 281 | remove_ino_entry(sbi, ino, UPDATE_INO); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 282 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
| 283 | ret = f2fs_issue_flush(sbi); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 284 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 285 | out: |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 286 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 287 | f2fs_trace_ios(NULL, 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 288 | return ret; |
| 289 | } |
| 290 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 291 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
| 292 | pgoff_t pgofs, int whence) |
| 293 | { |
| 294 | struct pagevec pvec; |
| 295 | int nr_pages; |
| 296 | |
| 297 | if (whence != SEEK_DATA) |
| 298 | return 0; |
| 299 | |
| 300 | /* find first dirty page index */ |
| 301 | pagevec_init(&pvec, 0); |
Jaegeuk Kim | 65b85cc | 2014-07-30 17:25:54 -0700 | [diff] [blame] | 302 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
| 303 | PAGECACHE_TAG_DIRTY, 1); |
Chao Yu | 80dd9c0 | 2016-02-24 17:20:44 +0800 | [diff] [blame] | 304 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 305 | pagevec_release(&pvec); |
| 306 | return pgofs; |
| 307 | } |
| 308 | |
| 309 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, |
| 310 | int whence) |
| 311 | { |
| 312 | switch (whence) { |
| 313 | case SEEK_DATA: |
| 314 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || |
| 315 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) |
| 316 | return true; |
| 317 | break; |
| 318 | case SEEK_HOLE: |
| 319 | if (blkaddr == NULL_ADDR) |
| 320 | return true; |
| 321 | break; |
| 322 | } |
| 323 | return false; |
| 324 | } |
| 325 | |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 326 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
| 327 | { |
| 328 | struct inode *inode = file->f_mapping->host; |
| 329 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 330 | struct dnode_of_data dn; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 331 | pgoff_t pgofs, end_offset, dirty; |
| 332 | loff_t data_ofs = offset; |
| 333 | loff_t isize; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 334 | int err = 0; |
| 335 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 336 | inode_lock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 337 | |
| 338 | isize = i_size_read(inode); |
| 339 | if (offset >= isize) |
| 340 | goto fail; |
| 341 | |
| 342 | /* handle inline data case */ |
Chao Yu | 622f28a | 2014-09-24 18:19:10 +0800 | [diff] [blame] | 343 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 344 | if (whence == SEEK_HOLE) |
| 345 | data_ofs = isize; |
| 346 | goto found; |
| 347 | } |
| 348 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 349 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 350 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 351 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
| 352 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 353 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 354 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 355 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); |
| 356 | if (err && err != -ENOENT) { |
| 357 | goto fail; |
| 358 | } else if (err == -ENOENT) { |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 359 | /* direct node does not exists */ |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 360 | if (whence == SEEK_DATA) { |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 361 | pgofs = get_next_page_offset(&dn, pgofs); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 362 | continue; |
| 363 | } else { |
| 364 | goto found; |
| 365 | } |
| 366 | } |
| 367 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 368 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 369 | |
| 370 | /* find data/hole in dnode block */ |
| 371 | for (; dn.ofs_in_node < end_offset; |
| 372 | dn.ofs_in_node++, pgofs++, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 373 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 374 | block_t blkaddr; |
| 375 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); |
| 376 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 377 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 378 | f2fs_put_dnode(&dn); |
| 379 | goto found; |
| 380 | } |
| 381 | } |
| 382 | f2fs_put_dnode(&dn); |
| 383 | } |
| 384 | |
| 385 | if (whence == SEEK_DATA) |
| 386 | goto fail; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 387 | found: |
Jaegeuk Kim | fe369bc | 2014-04-28 17:02:48 +0900 | [diff] [blame] | 388 | if (whence == SEEK_HOLE && data_ofs > isize) |
| 389 | data_ofs = isize; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 390 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 391 | return vfs_setpos(file, data_ofs, maxbytes); |
| 392 | fail: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 393 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 394 | return -ENXIO; |
| 395 | } |
| 396 | |
| 397 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) |
| 398 | { |
| 399 | struct inode *inode = file->f_mapping->host; |
| 400 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 401 | |
| 402 | switch (whence) { |
| 403 | case SEEK_SET: |
| 404 | case SEEK_CUR: |
| 405 | case SEEK_END: |
| 406 | return generic_file_llseek_size(file, offset, whence, |
| 407 | maxbytes, i_size_read(inode)); |
| 408 | case SEEK_DATA: |
| 409 | case SEEK_HOLE: |
Jaegeuk Kim | 0b4c5afde | 2014-09-08 10:59:43 -0700 | [diff] [blame] | 410 | if (offset < 0) |
| 411 | return -ENXIO; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 412 | return f2fs_seek_block(file, offset, whence); |
| 413 | } |
| 414 | |
| 415 | return -EINVAL; |
| 416 | } |
| 417 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 418 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
| 419 | { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 420 | struct inode *inode = file_inode(file); |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 421 | int err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 422 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 423 | if (f2fs_encrypted_inode(inode)) { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 424 | err = fscrypt_get_encryption_info(inode); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 425 | if (err) |
| 426 | return 0; |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 427 | if (!f2fs_encrypted_inode(inode)) |
| 428 | return -ENOKEY; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 429 | } |
| 430 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 431 | /* we don't need to use inline_data strictly */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 432 | err = f2fs_convert_inline_inode(inode); |
| 433 | if (err) |
| 434 | return err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 435 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 436 | file_accessed(file); |
| 437 | vma->vm_ops = &f2fs_file_vm_ops; |
| 438 | return 0; |
| 439 | } |
| 440 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 441 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
| 442 | { |
| 443 | int ret = generic_file_open(inode, filp); |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 444 | struct dentry *dir; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 445 | |
| 446 | if (!ret && f2fs_encrypted_inode(inode)) { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 447 | ret = fscrypt_get_encryption_info(inode); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 448 | if (ret) |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 449 | return -EACCES; |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 450 | if (!fscrypt_has_encryption_key(inode)) |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 451 | return -ENOKEY; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 452 | } |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 453 | dir = dget_parent(file_dentry(filp)); |
| 454 | if (f2fs_encrypted_inode(d_inode(dir)) && |
| 455 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { |
| 456 | dput(dir); |
Jaegeuk Kim | 8074bb5 | 2016-02-23 09:21:37 -0800 | [diff] [blame] | 457 | return -EPERM; |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 458 | } |
| 459 | dput(dir); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 460 | return ret; |
| 461 | } |
| 462 | |
Jaegeuk Kim | b292dcab | 2013-05-22 08:02:02 +0900 | [diff] [blame] | 463 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 464 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 465 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 466 | struct f2fs_node *raw_node; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 467 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 468 | __le32 *addr; |
| 469 | |
Gu Zheng | 4559071 | 2013-07-15 17:57:38 +0800 | [diff] [blame] | 470 | raw_node = F2FS_NODE(dn->node_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 471 | addr = blkaddr_in_node(raw_node) + ofs; |
| 472 | |
Chris Fries | 6c311ec | 2014-01-17 14:44:39 -0600 | [diff] [blame] | 473 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 474 | block_t blkaddr = le32_to_cpu(*addr); |
| 475 | if (blkaddr == NULL_ADDR) |
| 476 | continue; |
| 477 | |
Jaegeuk Kim | e1509cf | 2014-12-30 22:57:55 -0800 | [diff] [blame] | 478 | dn->data_blkaddr = NULL_ADDR; |
Chao Yu | 216a620 | 2015-03-19 19:23:32 +0800 | [diff] [blame] | 479 | set_data_blkaddr(dn); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 480 | invalidate_blocks(sbi, blkaddr); |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 481 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
| 482 | clear_inode_flag(F2FS_I(dn->inode), |
| 483 | FI_FIRST_BLOCK_WRITTEN); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 484 | nr_free++; |
| 485 | } |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 486 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 487 | if (nr_free) { |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 488 | pgoff_t fofs; |
| 489 | /* |
| 490 | * once we invalidate valid blkaddr in range [ofs, ofs + count], |
| 491 | * we will invalidate all blkaddr in the whole range. |
| 492 | */ |
| 493 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 494 | dn->inode) + ofs; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 495 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
Namjae Jeon | d7cc950 | 2013-06-08 21:25:40 +0900 | [diff] [blame] | 496 | dec_valid_block_count(sbi, dn->inode, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 497 | sync_inode_page(dn); |
| 498 | } |
| 499 | dn->ofs_in_node = ofs; |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 500 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 501 | f2fs_update_time(sbi, REQ_TIME); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 502 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
| 503 | dn->ofs_in_node, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 504 | return nr_free; |
| 505 | } |
| 506 | |
| 507 | void truncate_data_blocks(struct dnode_of_data *dn) |
| 508 | { |
| 509 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
| 510 | } |
| 511 | |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 512 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 513 | bool cache_only) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 514 | { |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 515 | unsigned offset = from & (PAGE_SIZE - 1); |
| 516 | pgoff_t index = from >> PAGE_SHIFT; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 517 | struct address_space *mapping = inode->i_mapping; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 518 | struct page *page; |
| 519 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 520 | if (!offset && !cache_only) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 521 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 522 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 523 | if (cache_only) { |
Jaegeuk Kim | a56c7c6 | 2015-10-09 15:11:38 -0700 | [diff] [blame] | 524 | page = f2fs_grab_cache_page(mapping, index, false); |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 525 | if (page && PageUptodate(page)) |
| 526 | goto truncate_out; |
| 527 | f2fs_put_page(page, 1); |
| 528 | return 0; |
| 529 | } |
| 530 | |
Jaegeuk Kim | a56c7c6 | 2015-10-09 15:11:38 -0700 | [diff] [blame] | 531 | page = get_lock_data_page(inode, index, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 532 | if (IS_ERR(page)) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 533 | return 0; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 534 | truncate_out: |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 535 | f2fs_wait_on_page_writeback(page, DATA, true); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 536 | zero_user(page, offset, PAGE_SIZE - offset); |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 537 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
| 538 | !S_ISREG(inode->i_mode)) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 539 | set_page_dirty(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 540 | f2fs_put_page(page, 1); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 541 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 542 | } |
| 543 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 544 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 545 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 546 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 547 | unsigned int blocksize = inode->i_sb->s_blocksize; |
| 548 | struct dnode_of_data dn; |
| 549 | pgoff_t free_from; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 550 | int count = 0, err = 0; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 551 | struct page *ipage; |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 552 | bool truncate_page = false; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 553 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 554 | trace_f2fs_truncate_blocks_enter(inode, from); |
| 555 | |
Jaegeuk Kim | f7ef9b8 | 2015-02-09 12:02:44 -0800 | [diff] [blame] | 556 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 557 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 558 | if (lock) |
| 559 | f2fs_lock_op(sbi); |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 560 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 561 | ipage = get_node_page(sbi, inode->i_ino); |
| 562 | if (IS_ERR(ipage)) { |
| 563 | err = PTR_ERR(ipage); |
| 564 | goto out; |
| 565 | } |
| 566 | |
| 567 | if (f2fs_has_inline_data(inode)) { |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 568 | if (truncate_inline_inode(ipage, from)) |
| 569 | set_page_dirty(ipage); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 570 | f2fs_put_page(ipage, 1); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 571 | truncate_page = true; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 572 | goto out; |
| 573 | } |
| 574 | |
| 575 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
Jaegeuk Kim | 266e97a | 2013-02-26 13:10:46 +0900 | [diff] [blame] | 576 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 577 | if (err) { |
| 578 | if (err == -ENOENT) |
| 579 | goto free_next; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 580 | goto out; |
Jaegeuk Kim | 1ce86bf | 2014-10-15 10:24:34 -0700 | [diff] [blame] | 581 | } |
| 582 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 583 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 584 | |
| 585 | count -= dn.ofs_in_node; |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 586 | f2fs_bug_on(sbi, count < 0); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 587 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 588 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
| 589 | truncate_data_blocks_range(&dn, count); |
| 590 | free_from += count; |
| 591 | } |
| 592 | |
| 593 | f2fs_put_dnode(&dn); |
| 594 | free_next: |
| 595 | err = truncate_inode_blocks(inode, free_from); |
Jaegeuk Kim | 764d2c8 | 2014-11-11 11:01:01 -0800 | [diff] [blame] | 596 | out: |
| 597 | if (lock) |
| 598 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 599 | |
| 600 | /* lastly zero out the first data page */ |
| 601 | if (!err) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 602 | err = truncate_partial_data_page(inode, from, truncate_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 603 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 604 | trace_f2fs_truncate_blocks_exit(inode, err); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 605 | return err; |
| 606 | } |
| 607 | |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 608 | int f2fs_truncate(struct inode *inode, bool lock) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 609 | { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 610 | int err; |
| 611 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 612 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 613 | S_ISLNK(inode->i_mode))) |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 614 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 615 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 616 | trace_f2fs_truncate(inode); |
| 617 | |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 618 | /* we should check inline_data size */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 619 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 620 | err = f2fs_convert_inline_inode(inode); |
| 621 | if (err) |
| 622 | return err; |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 623 | } |
| 624 | |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 625 | err = truncate_blocks(inode, i_size_read(inode), lock); |
| 626 | if (err) |
| 627 | return err; |
| 628 | |
| 629 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
| 630 | mark_inode_dirty(inode); |
| 631 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 632 | } |
| 633 | |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 634 | int f2fs_getattr(struct vfsmount *mnt, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 635 | struct dentry *dentry, struct kstat *stat) |
| 636 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 637 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 638 | generic_fillattr(inode, stat); |
| 639 | stat->blocks <<= 3; |
| 640 | return 0; |
| 641 | } |
| 642 | |
| 643 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 644 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) |
| 645 | { |
| 646 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 647 | unsigned int ia_valid = attr->ia_valid; |
| 648 | |
| 649 | if (ia_valid & ATTR_UID) |
| 650 | inode->i_uid = attr->ia_uid; |
| 651 | if (ia_valid & ATTR_GID) |
| 652 | inode->i_gid = attr->ia_gid; |
| 653 | if (ia_valid & ATTR_ATIME) |
| 654 | inode->i_atime = timespec_trunc(attr->ia_atime, |
| 655 | inode->i_sb->s_time_gran); |
| 656 | if (ia_valid & ATTR_MTIME) |
| 657 | inode->i_mtime = timespec_trunc(attr->ia_mtime, |
| 658 | inode->i_sb->s_time_gran); |
| 659 | if (ia_valid & ATTR_CTIME) |
| 660 | inode->i_ctime = timespec_trunc(attr->ia_ctime, |
| 661 | inode->i_sb->s_time_gran); |
| 662 | if (ia_valid & ATTR_MODE) { |
| 663 | umode_t mode = attr->ia_mode; |
| 664 | |
| 665 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) |
| 666 | mode &= ~S_ISGID; |
| 667 | set_acl_inode(fi, mode); |
| 668 | } |
| 669 | } |
| 670 | #else |
| 671 | #define __setattr_copy setattr_copy |
| 672 | #endif |
| 673 | |
| 674 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) |
| 675 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 676 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 677 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 678 | int err; |
| 679 | |
| 680 | err = inode_change_ok(inode, attr); |
| 681 | if (err) |
| 682 | return err; |
| 683 | |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 684 | if (attr->ia_valid & ATTR_SIZE) { |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 685 | if (f2fs_encrypted_inode(inode) && |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 686 | fscrypt_get_encryption_info(inode)) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 687 | return -EACCES; |
| 688 | |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 689 | if (attr->ia_size <= i_size_read(inode)) { |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 690 | truncate_setsize(inode, attr->ia_size); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 691 | err = f2fs_truncate(inode, true); |
| 692 | if (err) |
| 693 | return err; |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 694 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 695 | } else { |
| 696 | /* |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 697 | * do not trim all blocks after i_size if target size is |
| 698 | * larger than i_size. |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 699 | */ |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 700 | truncate_setsize(inode, attr->ia_size); |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 701 | |
| 702 | /* should convert inline inode here */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 703 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 704 | err = f2fs_convert_inline_inode(inode); |
| 705 | if (err) |
| 706 | return err; |
| 707 | } |
Chao Yu | 345a6b2 | 2015-09-28 17:46:01 +0800 | [diff] [blame] | 708 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 709 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 710 | } |
| 711 | |
| 712 | __setattr_copy(inode, attr); |
| 713 | |
| 714 | if (attr->ia_valid & ATTR_MODE) { |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 715 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 716 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
| 717 | inode->i_mode = fi->i_acl_mode; |
| 718 | clear_inode_flag(fi, FI_ACL_MODE); |
| 719 | } |
| 720 | } |
| 721 | |
| 722 | mark_inode_dirty(inode); |
| 723 | return err; |
| 724 | } |
| 725 | |
| 726 | const struct inode_operations f2fs_file_inode_operations = { |
| 727 | .getattr = f2fs_getattr, |
| 728 | .setattr = f2fs_setattr, |
| 729 | .get_acl = f2fs_get_acl, |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 730 | .set_acl = f2fs_set_acl, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 731 | #ifdef CONFIG_F2FS_FS_XATTR |
| 732 | .setxattr = generic_setxattr, |
| 733 | .getxattr = generic_getxattr, |
| 734 | .listxattr = f2fs_listxattr, |
| 735 | .removexattr = generic_removexattr, |
| 736 | #endif |
Jaegeuk Kim | 9ab7013 | 2014-06-08 04:30:14 +0900 | [diff] [blame] | 737 | .fiemap = f2fs_fiemap, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 738 | }; |
| 739 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 740 | static int fill_zero(struct inode *inode, pgoff_t index, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 741 | loff_t start, loff_t len) |
| 742 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 743 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 744 | struct page *page; |
| 745 | |
| 746 | if (!len) |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 747 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 748 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 749 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | bd43df0 | 2013-01-25 18:33:41 +0900 | [diff] [blame] | 750 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 751 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 64aa7ed | 2013-05-20 09:55:50 +0900 | [diff] [blame] | 752 | page = get_new_data_page(inode, NULL, index, false); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 753 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 754 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 755 | if (IS_ERR(page)) |
| 756 | return PTR_ERR(page); |
| 757 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 758 | f2fs_wait_on_page_writeback(page, DATA, true); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 759 | zero_user(page, start, len); |
| 760 | set_page_dirty(page); |
| 761 | f2fs_put_page(page, 1); |
| 762 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 763 | } |
| 764 | |
| 765 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
| 766 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 767 | int err; |
| 768 | |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 769 | while (pg_start < pg_end) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 770 | struct dnode_of_data dn; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 771 | pgoff_t end_offset, count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 772 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 773 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 774 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 775 | if (err) { |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 776 | if (err == -ENOENT) { |
| 777 | pg_start++; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 778 | continue; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 779 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 780 | return err; |
| 781 | } |
| 782 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 783 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 784 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
| 785 | |
| 786 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); |
| 787 | |
| 788 | truncate_data_blocks_range(&dn, count); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 789 | f2fs_put_dnode(&dn); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 790 | |
| 791 | pg_start += count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 792 | } |
| 793 | return 0; |
| 794 | } |
| 795 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 796 | 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] | 797 | { |
| 798 | pgoff_t pg_start, pg_end; |
| 799 | loff_t off_start, off_end; |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 800 | int ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 801 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 802 | ret = f2fs_convert_inline_inode(inode); |
| 803 | if (ret) |
| 804 | return ret; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 805 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 806 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 807 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 808 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 809 | off_start = offset & (PAGE_SIZE - 1); |
| 810 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 811 | |
| 812 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 813 | ret = fill_zero(inode, pg_start, off_start, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 814 | off_end - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 815 | if (ret) |
| 816 | return ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 817 | } else { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 818 | if (off_start) { |
| 819 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 820 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 821 | if (ret) |
| 822 | return ret; |
| 823 | } |
| 824 | if (off_end) { |
| 825 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 826 | if (ret) |
| 827 | return ret; |
| 828 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 829 | |
| 830 | if (pg_start < pg_end) { |
| 831 | struct address_space *mapping = inode->i_mapping; |
| 832 | loff_t blk_start, blk_end; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 833 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jason Hrycay | 1127a3d | 2013-04-08 20:16:44 -0500 | [diff] [blame] | 834 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 835 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 836 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 837 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
| 838 | blk_end = (loff_t)pg_end << PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 839 | truncate_inode_pages_range(mapping, blk_start, |
| 840 | blk_end - 1); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 841 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 842 | f2fs_lock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 843 | ret = truncate_hole(inode, pg_start, pg_end); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 844 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 845 | } |
| 846 | } |
| 847 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 848 | return ret; |
| 849 | } |
| 850 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 851 | static int __exchange_data_block(struct inode *inode, pgoff_t src, |
| 852 | pgoff_t dst, bool full) |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 853 | { |
| 854 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 855 | struct dnode_of_data dn; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 856 | block_t new_addr; |
| 857 | bool do_replace = false; |
| 858 | int ret; |
| 859 | |
| 860 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 861 | ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA); |
| 862 | if (ret && ret != -ENOENT) { |
| 863 | return ret; |
| 864 | } else if (ret == -ENOENT) { |
| 865 | new_addr = NULL_ADDR; |
| 866 | } else { |
| 867 | new_addr = dn.data_blkaddr; |
| 868 | if (!is_checkpointed_data(sbi, new_addr)) { |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 869 | /* do not invalidate this block address */ |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 870 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 871 | do_replace = true; |
| 872 | } |
| 873 | f2fs_put_dnode(&dn); |
| 874 | } |
| 875 | |
| 876 | if (new_addr == NULL_ADDR) |
| 877 | return full ? truncate_hole(inode, dst, dst + 1) : 0; |
| 878 | |
| 879 | if (do_replace) { |
| 880 | struct page *ipage = get_node_page(sbi, inode->i_ino); |
| 881 | struct node_info ni; |
| 882 | |
| 883 | if (IS_ERR(ipage)) { |
| 884 | ret = PTR_ERR(ipage); |
| 885 | goto err_out; |
| 886 | } |
| 887 | |
| 888 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
| 889 | ret = f2fs_reserve_block(&dn, dst); |
| 890 | if (ret) |
| 891 | goto err_out; |
| 892 | |
| 893 | truncate_data_blocks_range(&dn, 1); |
| 894 | |
| 895 | get_node_info(sbi, dn.nid, &ni); |
| 896 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr, |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 897 | ni.version, true, false); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 898 | f2fs_put_dnode(&dn); |
| 899 | } else { |
| 900 | struct page *psrc, *pdst; |
| 901 | |
Jaegeuk Kim | a56c7c6 | 2015-10-09 15:11:38 -0700 | [diff] [blame] | 902 | psrc = get_lock_data_page(inode, src, true); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 903 | if (IS_ERR(psrc)) |
| 904 | return PTR_ERR(psrc); |
Jaegeuk Kim | 8ef2af45 | 2016-02-08 14:17:38 -0800 | [diff] [blame] | 905 | pdst = get_new_data_page(inode, NULL, dst, true); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 906 | if (IS_ERR(pdst)) { |
| 907 | f2fs_put_page(psrc, 1); |
| 908 | return PTR_ERR(pdst); |
| 909 | } |
| 910 | f2fs_copy_page(psrc, pdst); |
| 911 | set_page_dirty(pdst); |
| 912 | f2fs_put_page(pdst, 1); |
| 913 | f2fs_put_page(psrc, 1); |
| 914 | |
| 915 | return truncate_hole(inode, src, src + 1); |
| 916 | } |
| 917 | return 0; |
| 918 | |
| 919 | err_out: |
| 920 | if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) { |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 921 | f2fs_update_data_blkaddr(&dn, new_addr); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 922 | f2fs_put_dnode(&dn); |
| 923 | } |
| 924 | return ret; |
| 925 | } |
| 926 | |
| 927 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
| 928 | { |
| 929 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 930 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
| 931 | int ret = 0; |
| 932 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 933 | for (; end < nrpages; start++, end++) { |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 934 | f2fs_balance_fs(sbi, true); |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 935 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 936 | ret = __exchange_data_block(inode, end, start, true); |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 937 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 938 | if (ret) |
| 939 | break; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 940 | } |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 941 | return ret; |
| 942 | } |
| 943 | |
| 944 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) |
| 945 | { |
| 946 | pgoff_t pg_start, pg_end; |
| 947 | loff_t new_size; |
| 948 | int ret; |
| 949 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 950 | if (offset + len >= i_size_read(inode)) |
| 951 | return -EINVAL; |
| 952 | |
| 953 | /* collapse range should be aligned to block size of f2fs. */ |
| 954 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 955 | return -EINVAL; |
| 956 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 957 | ret = f2fs_convert_inline_inode(inode); |
| 958 | if (ret) |
| 959 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 960 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 961 | pg_start = offset >> PAGE_SHIFT; |
| 962 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 963 | |
| 964 | /* write out all dirty pages from offset */ |
| 965 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 966 | if (ret) |
| 967 | return ret; |
| 968 | |
| 969 | truncate_pagecache(inode, offset); |
| 970 | |
| 971 | ret = f2fs_do_collapse(inode, pg_start, pg_end); |
| 972 | if (ret) |
| 973 | return ret; |
| 974 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 975 | /* write out all moved pages, if possible */ |
| 976 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 977 | truncate_pagecache(inode, offset); |
| 978 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 979 | new_size = i_size_read(inode) - len; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 980 | truncate_pagecache(inode, new_size); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 981 | |
| 982 | ret = truncate_blocks(inode, new_size, true); |
| 983 | if (!ret) |
| 984 | i_size_write(inode, new_size); |
| 985 | |
| 986 | return ret; |
| 987 | } |
| 988 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 989 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
| 990 | int mode) |
| 991 | { |
| 992 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 993 | struct address_space *mapping = inode->i_mapping; |
| 994 | pgoff_t index, pg_start, pg_end; |
| 995 | loff_t new_size = i_size_read(inode); |
| 996 | loff_t off_start, off_end; |
| 997 | int ret = 0; |
| 998 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 999 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1000 | if (ret) |
| 1001 | return ret; |
| 1002 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1003 | ret = f2fs_convert_inline_inode(inode); |
| 1004 | if (ret) |
| 1005 | return ret; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1006 | |
| 1007 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
| 1008 | if (ret) |
| 1009 | return ret; |
| 1010 | |
| 1011 | truncate_pagecache_range(inode, offset, offset + len - 1); |
| 1012 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1013 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 1014 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1015 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1016 | off_start = offset & (PAGE_SIZE - 1); |
| 1017 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1018 | |
| 1019 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1020 | ret = fill_zero(inode, pg_start, off_start, |
| 1021 | off_end - off_start); |
| 1022 | if (ret) |
| 1023 | return ret; |
| 1024 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1025 | if (offset + len > new_size) |
| 1026 | new_size = offset + len; |
| 1027 | new_size = max_t(loff_t, new_size, offset + len); |
| 1028 | } else { |
| 1029 | if (off_start) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1030 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1031 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1032 | if (ret) |
| 1033 | return ret; |
| 1034 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1035 | new_size = max_t(loff_t, new_size, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1036 | (loff_t)pg_start << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1037 | } |
| 1038 | |
| 1039 | for (index = pg_start; index < pg_end; index++) { |
| 1040 | struct dnode_of_data dn; |
| 1041 | struct page *ipage; |
| 1042 | |
| 1043 | f2fs_lock_op(sbi); |
| 1044 | |
| 1045 | ipage = get_node_page(sbi, inode->i_ino); |
| 1046 | if (IS_ERR(ipage)) { |
| 1047 | ret = PTR_ERR(ipage); |
| 1048 | f2fs_unlock_op(sbi); |
| 1049 | goto out; |
| 1050 | } |
| 1051 | |
| 1052 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
| 1053 | ret = f2fs_reserve_block(&dn, index); |
| 1054 | if (ret) { |
| 1055 | f2fs_unlock_op(sbi); |
| 1056 | goto out; |
| 1057 | } |
| 1058 | |
| 1059 | if (dn.data_blkaddr != NEW_ADDR) { |
| 1060 | invalidate_blocks(sbi, dn.data_blkaddr); |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 1061 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1062 | } |
| 1063 | f2fs_put_dnode(&dn); |
| 1064 | f2fs_unlock_op(sbi); |
| 1065 | |
| 1066 | new_size = max_t(loff_t, new_size, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1067 | (loff_t)(index + 1) << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1068 | } |
| 1069 | |
| 1070 | if (off_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1071 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 1072 | if (ret) |
| 1073 | goto out; |
| 1074 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1075 | new_size = max_t(loff_t, new_size, offset + len); |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | out: |
| 1080 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { |
| 1081 | i_size_write(inode, new_size); |
| 1082 | mark_inode_dirty(inode); |
| 1083 | update_inode_page(inode); |
| 1084 | } |
| 1085 | |
| 1086 | return ret; |
| 1087 | } |
| 1088 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1089 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
| 1090 | { |
| 1091 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1092 | pgoff_t pg_start, pg_end, delta, nrpages, idx; |
| 1093 | loff_t new_size; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1094 | int ret = 0; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1095 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1096 | new_size = i_size_read(inode) + len; |
| 1097 | if (new_size > inode->i_sb->s_maxbytes) |
| 1098 | return -EFBIG; |
| 1099 | |
| 1100 | if (offset >= i_size_read(inode)) |
| 1101 | return -EINVAL; |
| 1102 | |
| 1103 | /* insert range should be aligned to block size of f2fs. */ |
| 1104 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 1105 | return -EINVAL; |
| 1106 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1107 | ret = f2fs_convert_inline_inode(inode); |
| 1108 | if (ret) |
| 1109 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 1110 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1111 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1112 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1113 | ret = truncate_blocks(inode, i_size_read(inode), true); |
| 1114 | if (ret) |
| 1115 | return ret; |
| 1116 | |
| 1117 | /* write out all dirty pages from offset */ |
| 1118 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1119 | if (ret) |
| 1120 | return ret; |
| 1121 | |
| 1122 | truncate_pagecache(inode, offset); |
| 1123 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1124 | pg_start = offset >> PAGE_SHIFT; |
| 1125 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1126 | delta = pg_end - pg_start; |
| 1127 | nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
| 1128 | |
| 1129 | for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) { |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1130 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1131 | ret = __exchange_data_block(inode, idx, idx + delta, false); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1132 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1133 | if (ret) |
| 1134 | break; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1135 | } |
| 1136 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1137 | /* write out all moved pages, if possible */ |
| 1138 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1139 | truncate_pagecache(inode, offset); |
| 1140 | |
| 1141 | if (!ret) |
| 1142 | i_size_write(inode, new_size); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1143 | return ret; |
| 1144 | } |
| 1145 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1146 | static int expand_inode_data(struct inode *inode, loff_t offset, |
| 1147 | loff_t len, int mode) |
| 1148 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1149 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1150 | pgoff_t index, pg_start, pg_end; |
| 1151 | loff_t new_size = i_size_read(inode); |
| 1152 | loff_t off_start, off_end; |
| 1153 | int ret = 0; |
| 1154 | |
| 1155 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1156 | if (ret) |
| 1157 | return ret; |
| 1158 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1159 | ret = f2fs_convert_inline_inode(inode); |
| 1160 | if (ret) |
| 1161 | return ret; |
Jaegeuk Kim | 9e09fc8 | 2013-12-27 12:28:59 +0900 | [diff] [blame] | 1162 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1163 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1164 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1165 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 1166 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1167 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1168 | off_start = offset & (PAGE_SIZE - 1); |
| 1169 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1170 | |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1171 | f2fs_lock_op(sbi); |
| 1172 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1173 | for (index = pg_start; index <= pg_end; index++) { |
| 1174 | struct dnode_of_data dn; |
| 1175 | |
Jaegeuk Kim | 98397ff | 2014-06-13 13:07:31 +0900 | [diff] [blame] | 1176 | if (index == pg_end && !off_end) |
| 1177 | goto noalloc; |
| 1178 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1179 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Huajun Li | b600965 | 2013-11-10 23:13:18 +0800 | [diff] [blame] | 1180 | ret = f2fs_reserve_block(&dn, index); |
Huajun Li | b600965 | 2013-11-10 23:13:18 +0800 | [diff] [blame] | 1181 | if (ret) |
| 1182 | break; |
Jaegeuk Kim | 98397ff | 2014-06-13 13:07:31 +0900 | [diff] [blame] | 1183 | noalloc: |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1184 | if (pg_start == pg_end) |
| 1185 | new_size = offset + len; |
| 1186 | else if (index == pg_start && off_start) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1187 | new_size = (loff_t)(index + 1) << PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1188 | else if (index == pg_end) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1189 | new_size = ((loff_t)index << PAGE_SHIFT) + |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 1190 | off_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1191 | else |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1192 | new_size += PAGE_SIZE; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1193 | } |
| 1194 | |
| 1195 | if (!(mode & FALLOC_FL_KEEP_SIZE) && |
| 1196 | i_size_read(inode) < new_size) { |
| 1197 | i_size_write(inode, new_size); |
| 1198 | mark_inode_dirty(inode); |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1199 | update_inode_page(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1200 | } |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1201 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1202 | |
| 1203 | return ret; |
| 1204 | } |
| 1205 | |
| 1206 | static long f2fs_fallocate(struct file *file, int mode, |
| 1207 | loff_t offset, loff_t len) |
| 1208 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1209 | struct inode *inode = file_inode(file); |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1210 | long ret = 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1211 | |
Chao Yu | c998012 | 2015-09-11 14:39:02 +0800 | [diff] [blame] | 1212 | /* f2fs only support ->fallocate for regular file */ |
| 1213 | if (!S_ISREG(inode->i_mode)) |
| 1214 | return -EINVAL; |
| 1215 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1216 | if (f2fs_encrypted_inode(inode) && |
| 1217 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1218 | return -EOPNOTSUPP; |
| 1219 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1220 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1221 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
| 1222 | FALLOC_FL_INSERT_RANGE)) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1223 | return -EOPNOTSUPP; |
| 1224 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1225 | inode_lock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1226 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1227 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
| 1228 | if (offset >= inode->i_size) |
| 1229 | goto out; |
| 1230 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 1231 | ret = punch_hole(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1232 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
| 1233 | ret = f2fs_collapse_range(inode, offset, len); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1234 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
| 1235 | ret = f2fs_zero_range(inode, offset, len, mode); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1236 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
| 1237 | ret = f2fs_insert_range(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1238 | } else { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1239 | ret = expand_inode_data(inode, offset, len, mode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1240 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1241 | |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1242 | if (!ret) { |
| 1243 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
| 1244 | mark_inode_dirty(inode); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1245 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1246 | } |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1247 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1248 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1249 | inode_unlock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1250 | |
Namjae Jeon | c01e285 | 2013-04-23 17:00:52 +0900 | [diff] [blame] | 1251 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1252 | return ret; |
| 1253 | } |
| 1254 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1255 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
| 1256 | { |
Jaegeuk Kim | de5307e | 2016-04-11 11:51:51 -0700 | [diff] [blame^] | 1257 | /* |
| 1258 | * f2fs_relase_file is called at every close calls. So we should |
| 1259 | * not drop any inmemory pages by close called by other process. |
| 1260 | */ |
| 1261 | if (!(filp->f_mode & FMODE_WRITE) || |
| 1262 | atomic_read(&inode->i_writecount) != 1) |
| 1263 | return 0; |
| 1264 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1265 | /* some remained atomic pages should discarded */ |
| 1266 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1267 | drop_inmem_pages(inode); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1268 | if (f2fs_is_volatile_file(inode)) { |
| 1269 | set_inode_flag(F2FS_I(inode), FI_DROP_CACHE); |
| 1270 | filemap_fdatawrite(inode->i_mapping); |
| 1271 | clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE); |
| 1272 | } |
| 1273 | return 0; |
| 1274 | } |
| 1275 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1276 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
| 1277 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) |
| 1278 | |
| 1279 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) |
| 1280 | { |
| 1281 | if (S_ISDIR(mode)) |
| 1282 | return flags; |
| 1283 | else if (S_ISREG(mode)) |
| 1284 | return flags & F2FS_REG_FLMASK; |
| 1285 | else |
| 1286 | return flags & F2FS_OTHER_FLMASK; |
| 1287 | } |
| 1288 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1289 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1290 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1291 | struct inode *inode = file_inode(filp); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1292 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1293 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
| 1294 | return put_user(flags, (int __user *)arg); |
| 1295 | } |
| 1296 | |
| 1297 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
| 1298 | { |
| 1299 | struct inode *inode = file_inode(filp); |
| 1300 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 1301 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
| 1302 | unsigned int oldflags; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1303 | int ret; |
| 1304 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1305 | ret = mnt_want_write_file(filp); |
| 1306 | if (ret) |
| 1307 | return ret; |
| 1308 | |
| 1309 | if (!inode_owner_or_capable(inode)) { |
| 1310 | ret = -EACCES; |
| 1311 | goto out; |
| 1312 | } |
| 1313 | |
| 1314 | if (get_user(flags, (int __user *)arg)) { |
| 1315 | ret = -EFAULT; |
| 1316 | goto out; |
| 1317 | } |
| 1318 | |
| 1319 | flags = f2fs_mask_flags(inode->i_mode, flags); |
| 1320 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1321 | inode_lock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1322 | |
| 1323 | oldflags = fi->i_flags; |
| 1324 | |
| 1325 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
| 1326 | if (!capable(CAP_LINUX_IMMUTABLE)) { |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1327 | inode_unlock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1328 | ret = -EPERM; |
| 1329 | goto out; |
| 1330 | } |
| 1331 | } |
| 1332 | |
| 1333 | flags = flags & FS_FL_USER_MODIFIABLE; |
| 1334 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; |
| 1335 | fi->i_flags = flags; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1336 | inode_unlock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1337 | |
| 1338 | f2fs_set_inode_flags(inode); |
| 1339 | inode->i_ctime = CURRENT_TIME; |
| 1340 | mark_inode_dirty(inode); |
| 1341 | out: |
| 1342 | mnt_drop_write_file(filp); |
| 1343 | return ret; |
| 1344 | } |
| 1345 | |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1346 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
| 1347 | { |
| 1348 | struct inode *inode = file_inode(filp); |
| 1349 | |
| 1350 | return put_user(inode->i_generation, (int __user *)arg); |
| 1351 | } |
| 1352 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1353 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
| 1354 | { |
| 1355 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1356 | int ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1357 | |
| 1358 | if (!inode_owner_or_capable(inode)) |
| 1359 | return -EACCES; |
| 1360 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1361 | if (f2fs_is_atomic_file(inode)) |
| 1362 | return 0; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1363 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1364 | ret = f2fs_convert_inline_inode(inode); |
| 1365 | if (ret) |
| 1366 | return ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1367 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1368 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1369 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
| 1370 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1371 | return 0; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | static int f2fs_ioc_commit_atomic_write(struct file *filp) |
| 1375 | { |
| 1376 | struct inode *inode = file_inode(filp); |
| 1377 | int ret; |
| 1378 | |
| 1379 | if (!inode_owner_or_capable(inode)) |
| 1380 | return -EACCES; |
| 1381 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1382 | if (f2fs_is_volatile_file(inode)) |
| 1383 | return 0; |
| 1384 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1385 | ret = mnt_want_write_file(filp); |
| 1386 | if (ret) |
| 1387 | return ret; |
| 1388 | |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1389 | if (f2fs_is_atomic_file(inode)) { |
| 1390 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1391 | ret = commit_inmem_pages(inode); |
Jaegeuk Kim | 447135a | 2016-01-09 17:08:38 -0800 | [diff] [blame] | 1392 | if (ret) { |
| 1393 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1394 | goto err_out; |
Jaegeuk Kim | 447135a | 2016-01-09 17:08:38 -0800 | [diff] [blame] | 1395 | } |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1396 | } |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1397 | |
Chao Yu | a5f64b6 | 2015-07-17 18:05:21 +0800 | [diff] [blame] | 1398 | ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1399 | err_out: |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1400 | mnt_drop_write_file(filp); |
| 1401 | return ret; |
| 1402 | } |
| 1403 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1404 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
| 1405 | { |
| 1406 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1407 | int ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1408 | |
| 1409 | if (!inode_owner_or_capable(inode)) |
| 1410 | return -EACCES; |
| 1411 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1412 | if (f2fs_is_volatile_file(inode)) |
| 1413 | return 0; |
| 1414 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1415 | ret = f2fs_convert_inline_inode(inode); |
| 1416 | if (ret) |
| 1417 | return ret; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 1418 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1419 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1420 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1421 | return 0; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1422 | } |
| 1423 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1424 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
| 1425 | { |
| 1426 | struct inode *inode = file_inode(filp); |
| 1427 | |
| 1428 | if (!inode_owner_or_capable(inode)) |
| 1429 | return -EACCES; |
| 1430 | |
| 1431 | if (!f2fs_is_volatile_file(inode)) |
| 1432 | return 0; |
| 1433 | |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 1434 | if (!f2fs_is_first_block_written(inode)) |
| 1435 | return truncate_partial_data_page(inode, 0, true); |
| 1436 | |
Nicholas Krause | 538e17e | 2015-09-06 08:28:46 -0400 | [diff] [blame] | 1437 | return punch_hole(inode, 0, F2FS_BLKSIZE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1438 | } |
| 1439 | |
| 1440 | static int f2fs_ioc_abort_volatile_write(struct file *filp) |
| 1441 | { |
| 1442 | struct inode *inode = file_inode(filp); |
| 1443 | int ret; |
| 1444 | |
| 1445 | if (!inode_owner_or_capable(inode)) |
| 1446 | return -EACCES; |
| 1447 | |
| 1448 | ret = mnt_want_write_file(filp); |
| 1449 | if (ret) |
| 1450 | return ret; |
| 1451 | |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1452 | if (f2fs_is_atomic_file(inode)) { |
| 1453 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1454 | drop_inmem_pages(inode); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1455 | } |
| 1456 | if (f2fs_is_volatile_file(inode)) { |
| 1457 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
| 1458 | ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0); |
| 1459 | } |
Jaegeuk Kim | de6a8ec | 2015-06-08 17:51:10 -0700 | [diff] [blame] | 1460 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1461 | mnt_drop_write_file(filp); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1462 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1463 | return ret; |
| 1464 | } |
| 1465 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1466 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
| 1467 | { |
| 1468 | struct inode *inode = file_inode(filp); |
| 1469 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1470 | struct super_block *sb = sbi->sb; |
| 1471 | __u32 in; |
| 1472 | |
| 1473 | if (!capable(CAP_SYS_ADMIN)) |
| 1474 | return -EPERM; |
| 1475 | |
| 1476 | if (get_user(in, (__u32 __user *)arg)) |
| 1477 | return -EFAULT; |
| 1478 | |
| 1479 | switch (in) { |
| 1480 | case F2FS_GOING_DOWN_FULLSYNC: |
| 1481 | sb = freeze_bdev(sb->s_bdev); |
| 1482 | if (sb && !IS_ERR(sb)) { |
| 1483 | f2fs_stop_checkpoint(sbi); |
| 1484 | thaw_bdev(sb->s_bdev, sb); |
| 1485 | } |
| 1486 | break; |
| 1487 | case F2FS_GOING_DOWN_METASYNC: |
| 1488 | /* do checkpoint only */ |
| 1489 | f2fs_sync_fs(sb, 1); |
| 1490 | f2fs_stop_checkpoint(sbi); |
| 1491 | break; |
| 1492 | case F2FS_GOING_DOWN_NOSYNC: |
| 1493 | f2fs_stop_checkpoint(sbi); |
| 1494 | break; |
Jaegeuk Kim | c912a82 | 2015-10-07 09:46:37 -0700 | [diff] [blame] | 1495 | case F2FS_GOING_DOWN_METAFLUSH: |
| 1496 | sync_meta_pages(sbi, META, LONG_MAX); |
| 1497 | f2fs_stop_checkpoint(sbi); |
| 1498 | break; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1499 | default: |
| 1500 | return -EINVAL; |
| 1501 | } |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1502 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1503 | return 0; |
| 1504 | } |
| 1505 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1506 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
| 1507 | { |
| 1508 | struct inode *inode = file_inode(filp); |
| 1509 | struct super_block *sb = inode->i_sb; |
| 1510 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
| 1511 | struct fstrim_range range; |
| 1512 | int ret; |
| 1513 | |
| 1514 | if (!capable(CAP_SYS_ADMIN)) |
| 1515 | return -EPERM; |
| 1516 | |
| 1517 | if (!blk_queue_discard(q)) |
| 1518 | return -EOPNOTSUPP; |
| 1519 | |
| 1520 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
| 1521 | sizeof(range))) |
| 1522 | return -EFAULT; |
| 1523 | |
| 1524 | range.minlen = max((unsigned int)range.minlen, |
| 1525 | q->limits.discard_granularity); |
| 1526 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); |
| 1527 | if (ret < 0) |
| 1528 | return ret; |
| 1529 | |
| 1530 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
| 1531 | sizeof(range))) |
| 1532 | return -EFAULT; |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1533 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1534 | return 0; |
| 1535 | } |
| 1536 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1537 | static bool uuid_is_nonzero(__u8 u[16]) |
| 1538 | { |
| 1539 | int i; |
| 1540 | |
| 1541 | for (i = 0; i < 16; i++) |
| 1542 | if (u[i]) |
| 1543 | return true; |
| 1544 | return false; |
| 1545 | } |
| 1546 | |
| 1547 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) |
| 1548 | { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1549 | struct fscrypt_policy policy; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1550 | struct inode *inode = file_inode(filp); |
| 1551 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1552 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
| 1553 | sizeof(policy))) |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1554 | return -EFAULT; |
| 1555 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1556 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1557 | return fscrypt_process_policy(inode, &policy); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1558 | } |
| 1559 | |
| 1560 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) |
| 1561 | { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1562 | struct fscrypt_policy policy; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1563 | struct inode *inode = file_inode(filp); |
| 1564 | int err; |
| 1565 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1566 | err = fscrypt_get_policy(inode, &policy); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1567 | if (err) |
| 1568 | return err; |
| 1569 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1570 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1571 | return -EFAULT; |
| 1572 | return 0; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1573 | } |
| 1574 | |
| 1575 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) |
| 1576 | { |
| 1577 | struct inode *inode = file_inode(filp); |
| 1578 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1579 | int err; |
| 1580 | |
| 1581 | if (!f2fs_sb_has_crypto(inode->i_sb)) |
| 1582 | return -EOPNOTSUPP; |
| 1583 | |
| 1584 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) |
| 1585 | goto got_it; |
| 1586 | |
| 1587 | err = mnt_want_write_file(filp); |
| 1588 | if (err) |
| 1589 | return err; |
| 1590 | |
| 1591 | /* update superblock with uuid */ |
| 1592 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); |
| 1593 | |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 1594 | err = f2fs_commit_super(sbi, false); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1595 | if (err) { |
| 1596 | /* undo new data */ |
| 1597 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); |
Chao Yu | e8240f6 | 2015-12-15 17:19:26 +0800 | [diff] [blame] | 1598 | mnt_drop_write_file(filp); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1599 | return err; |
| 1600 | } |
Chao Yu | e8240f6 | 2015-12-15 17:19:26 +0800 | [diff] [blame] | 1601 | mnt_drop_write_file(filp); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1602 | got_it: |
| 1603 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, |
| 1604 | 16)) |
| 1605 | return -EFAULT; |
| 1606 | return 0; |
| 1607 | } |
| 1608 | |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1609 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
| 1610 | { |
| 1611 | struct inode *inode = file_inode(filp); |
| 1612 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1613 | __u32 sync; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1614 | |
| 1615 | if (!capable(CAP_SYS_ADMIN)) |
| 1616 | return -EPERM; |
| 1617 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1618 | if (get_user(sync, (__u32 __user *)arg)) |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1619 | return -EFAULT; |
| 1620 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1621 | if (f2fs_readonly(sbi->sb)) |
| 1622 | return -EROFS; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1623 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1624 | if (!sync) { |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1625 | if (!mutex_trylock(&sbi->gc_mutex)) |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1626 | return -EBUSY; |
| 1627 | } else { |
| 1628 | mutex_lock(&sbi->gc_mutex); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1629 | } |
| 1630 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1631 | return f2fs_gc(sbi, sync); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1632 | } |
| 1633 | |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1634 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
| 1635 | { |
| 1636 | struct inode *inode = file_inode(filp); |
| 1637 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1638 | |
| 1639 | if (!capable(CAP_SYS_ADMIN)) |
| 1640 | return -EPERM; |
| 1641 | |
| 1642 | if (f2fs_readonly(sbi->sb)) |
| 1643 | return -EROFS; |
| 1644 | |
Chao Yu | e96248b | 2015-12-24 18:11:32 +0800 | [diff] [blame] | 1645 | return f2fs_sync_fs(sbi->sb, 1); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1646 | } |
| 1647 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1648 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
| 1649 | struct file *filp, |
| 1650 | struct f2fs_defragment *range) |
| 1651 | { |
| 1652 | struct inode *inode = file_inode(filp); |
Chao Yu | da85985 | 2016-01-26 15:42:58 +0800 | [diff] [blame] | 1653 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1654 | struct extent_info ei; |
| 1655 | pgoff_t pg_start, pg_end; |
Chao Yu | 3519e3f | 2015-12-01 11:56:52 +0800 | [diff] [blame] | 1656 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1657 | unsigned int total = 0, sec_num; |
Chao Yu | 3519e3f | 2015-12-01 11:56:52 +0800 | [diff] [blame] | 1658 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1659 | block_t blk_end = 0; |
| 1660 | bool fragmented = false; |
| 1661 | int err; |
| 1662 | |
| 1663 | /* if in-place-update policy is enabled, don't waste time here */ |
| 1664 | if (need_inplace_update(inode)) |
| 1665 | return -EINVAL; |
| 1666 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1667 | pg_start = range->start >> PAGE_SHIFT; |
| 1668 | pg_end = (range->start + range->len) >> PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1669 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1670 | f2fs_balance_fs(sbi, true); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1671 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1672 | inode_lock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1673 | |
| 1674 | /* writeback all dirty pages in the range */ |
| 1675 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, |
Fan Li | d8fe4f0 | 2015-12-14 13:34:00 +0800 | [diff] [blame] | 1676 | range->start + range->len - 1); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1677 | if (err) |
| 1678 | goto out; |
| 1679 | |
| 1680 | /* |
| 1681 | * lookup mapping info in extent cache, skip defragmenting if physical |
| 1682 | * block addresses are continuous. |
| 1683 | */ |
| 1684 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { |
| 1685 | if (ei.fofs + ei.len >= pg_end) |
| 1686 | goto out; |
| 1687 | } |
| 1688 | |
| 1689 | map.m_lblk = pg_start; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1690 | |
| 1691 | /* |
| 1692 | * lookup mapping info in dnode page cache, skip defragmenting if all |
| 1693 | * physical block addresses are continuous even if there are hole(s) |
| 1694 | * in logical blocks. |
| 1695 | */ |
| 1696 | while (map.m_lblk < pg_end) { |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 1697 | map.m_len = pg_end - map.m_lblk; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1698 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
| 1699 | if (err) |
| 1700 | goto out; |
| 1701 | |
| 1702 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
| 1703 | map.m_lblk++; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1704 | continue; |
| 1705 | } |
| 1706 | |
| 1707 | if (blk_end && blk_end != map.m_pblk) { |
| 1708 | fragmented = true; |
| 1709 | break; |
| 1710 | } |
| 1711 | blk_end = map.m_pblk + map.m_len; |
| 1712 | |
| 1713 | map.m_lblk += map.m_len; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | if (!fragmented) |
| 1717 | goto out; |
| 1718 | |
| 1719 | map.m_lblk = pg_start; |
| 1720 | map.m_len = pg_end - pg_start; |
| 1721 | |
| 1722 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; |
| 1723 | |
| 1724 | /* |
| 1725 | * make sure there are enough free section for LFS allocation, this can |
| 1726 | * avoid defragment running in SSR mode when free section are allocated |
| 1727 | * intensively |
| 1728 | */ |
| 1729 | if (has_not_enough_free_secs(sbi, sec_num)) { |
| 1730 | err = -EAGAIN; |
| 1731 | goto out; |
| 1732 | } |
| 1733 | |
| 1734 | while (map.m_lblk < pg_end) { |
| 1735 | pgoff_t idx; |
| 1736 | int cnt = 0; |
| 1737 | |
| 1738 | do_map: |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 1739 | map.m_len = pg_end - map.m_lblk; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1740 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
| 1741 | if (err) |
| 1742 | goto clear_out; |
| 1743 | |
| 1744 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
| 1745 | map.m_lblk++; |
| 1746 | continue; |
| 1747 | } |
| 1748 | |
| 1749 | set_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); |
| 1750 | |
| 1751 | idx = map.m_lblk; |
| 1752 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { |
| 1753 | struct page *page; |
| 1754 | |
| 1755 | page = get_lock_data_page(inode, idx, true); |
| 1756 | if (IS_ERR(page)) { |
| 1757 | err = PTR_ERR(page); |
| 1758 | goto clear_out; |
| 1759 | } |
| 1760 | |
| 1761 | set_page_dirty(page); |
| 1762 | f2fs_put_page(page, 1); |
| 1763 | |
| 1764 | idx++; |
| 1765 | cnt++; |
| 1766 | total++; |
| 1767 | } |
| 1768 | |
| 1769 | map.m_lblk = idx; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1770 | |
| 1771 | if (idx < pg_end && cnt < blk_per_seg) |
| 1772 | goto do_map; |
| 1773 | |
| 1774 | clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); |
| 1775 | |
| 1776 | err = filemap_fdatawrite(inode->i_mapping); |
| 1777 | if (err) |
| 1778 | goto out; |
| 1779 | } |
| 1780 | clear_out: |
| 1781 | clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); |
| 1782 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1783 | inode_unlock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1784 | if (!err) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1785 | range->len = (u64)total << PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1786 | return err; |
| 1787 | } |
| 1788 | |
| 1789 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) |
| 1790 | { |
| 1791 | struct inode *inode = file_inode(filp); |
| 1792 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1793 | struct f2fs_defragment range; |
| 1794 | int err; |
| 1795 | |
| 1796 | if (!capable(CAP_SYS_ADMIN)) |
| 1797 | return -EPERM; |
| 1798 | |
| 1799 | if (!S_ISREG(inode->i_mode)) |
| 1800 | return -EINVAL; |
| 1801 | |
| 1802 | err = mnt_want_write_file(filp); |
| 1803 | if (err) |
| 1804 | return err; |
| 1805 | |
| 1806 | if (f2fs_readonly(sbi->sb)) { |
| 1807 | err = -EROFS; |
| 1808 | goto out; |
| 1809 | } |
| 1810 | |
| 1811 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, |
| 1812 | sizeof(range))) { |
| 1813 | err = -EFAULT; |
| 1814 | goto out; |
| 1815 | } |
| 1816 | |
| 1817 | /* verify alignment of offset & size */ |
| 1818 | if (range.start & (F2FS_BLKSIZE - 1) || |
| 1819 | range.len & (F2FS_BLKSIZE - 1)) { |
| 1820 | err = -EINVAL; |
| 1821 | goto out; |
| 1822 | } |
| 1823 | |
| 1824 | err = f2fs_defragment_range(sbi, filp, &range); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1825 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1826 | if (err < 0) |
| 1827 | goto out; |
| 1828 | |
| 1829 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, |
| 1830 | sizeof(range))) |
| 1831 | err = -EFAULT; |
| 1832 | out: |
| 1833 | mnt_drop_write_file(filp); |
| 1834 | return err; |
| 1835 | } |
| 1836 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1837 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
| 1838 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1839 | switch (cmd) { |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 1840 | case F2FS_IOC_GETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1841 | return f2fs_ioc_getflags(filp, arg); |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 1842 | case F2FS_IOC_SETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1843 | return f2fs_ioc_setflags(filp, arg); |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1844 | case F2FS_IOC_GETVERSION: |
| 1845 | return f2fs_ioc_getversion(filp, arg); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1846 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 1847 | return f2fs_ioc_start_atomic_write(filp); |
| 1848 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 1849 | return f2fs_ioc_commit_atomic_write(filp); |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1850 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 1851 | return f2fs_ioc_start_volatile_write(filp); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1852 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 1853 | return f2fs_ioc_release_volatile_write(filp); |
| 1854 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 1855 | return f2fs_ioc_abort_volatile_write(filp); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1856 | case F2FS_IOC_SHUTDOWN: |
| 1857 | return f2fs_ioc_shutdown(filp, arg); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1858 | case FITRIM: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1859 | return f2fs_ioc_fitrim(filp, arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1860 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 1861 | return f2fs_ioc_set_encryption_policy(filp, arg); |
| 1862 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 1863 | return f2fs_ioc_get_encryption_policy(filp, arg); |
| 1864 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 1865 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1866 | case F2FS_IOC_GARBAGE_COLLECT: |
| 1867 | return f2fs_ioc_gc(filp, arg); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1868 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 1869 | return f2fs_ioc_write_checkpoint(filp, arg); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1870 | case F2FS_IOC_DEFRAGMENT: |
| 1871 | return f2fs_ioc_defragment(filp, arg); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1872 | default: |
| 1873 | return -ENOTTY; |
| 1874 | } |
| 1875 | } |
| 1876 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1877 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
| 1878 | { |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 1879 | struct file *file = iocb->ki_filp; |
| 1880 | struct inode *inode = file_inode(file); |
| 1881 | ssize_t ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1882 | |
| 1883 | if (f2fs_encrypted_inode(inode) && |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1884 | !fscrypt_has_encryption_key(inode) && |
| 1885 | fscrypt_get_encryption_info(inode)) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1886 | return -EACCES; |
| 1887 | |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 1888 | inode_lock(inode); |
| 1889 | ret = generic_write_checks(iocb, from); |
| 1890 | if (ret > 0) { |
| 1891 | ret = f2fs_preallocate_blocks(iocb, from); |
| 1892 | if (!ret) |
| 1893 | ret = __generic_file_write_iter(iocb, from); |
| 1894 | } |
| 1895 | inode_unlock(inode); |
| 1896 | |
| 1897 | if (ret > 0) { |
| 1898 | ssize_t err; |
| 1899 | |
| 1900 | err = generic_write_sync(file, iocb->ki_pos - ret, ret); |
| 1901 | if (err < 0) |
| 1902 | ret = err; |
| 1903 | } |
| 1904 | return ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1905 | } |
| 1906 | |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 1907 | #ifdef CONFIG_COMPAT |
| 1908 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 1909 | { |
| 1910 | switch (cmd) { |
| 1911 | case F2FS_IOC32_GETFLAGS: |
| 1912 | cmd = F2FS_IOC_GETFLAGS; |
| 1913 | break; |
| 1914 | case F2FS_IOC32_SETFLAGS: |
| 1915 | cmd = F2FS_IOC_SETFLAGS; |
| 1916 | break; |
Chao Yu | 04ef4b6 | 2015-11-10 18:44:20 +0800 | [diff] [blame] | 1917 | case F2FS_IOC32_GETVERSION: |
| 1918 | cmd = F2FS_IOC_GETVERSION; |
| 1919 | break; |
| 1920 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 1921 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 1922 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 1923 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 1924 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 1925 | case F2FS_IOC_SHUTDOWN: |
| 1926 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 1927 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 1928 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 1929 | case F2FS_IOC_GARBAGE_COLLECT: |
| 1930 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 1931 | case F2FS_IOC_DEFRAGMENT: |
| 1932 | break; |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 1933 | default: |
| 1934 | return -ENOIOCTLCMD; |
| 1935 | } |
| 1936 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
| 1937 | } |
| 1938 | #endif |
| 1939 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1940 | const struct file_operations f2fs_file_operations = { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 1941 | .llseek = f2fs_llseek, |
Al Viro | aad4f8b | 2014-04-02 14:33:16 -0400 | [diff] [blame] | 1942 | .read_iter = generic_file_read_iter, |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1943 | .write_iter = f2fs_file_write_iter, |
| 1944 | .open = f2fs_file_open, |
Jaegeuk Kim | 1266223 | 2014-12-05 14:37:37 -0800 | [diff] [blame] | 1945 | .release = f2fs_release_file, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1946 | .mmap = f2fs_file_mmap, |
| 1947 | .fsync = f2fs_sync_file, |
| 1948 | .fallocate = f2fs_fallocate, |
| 1949 | .unlocked_ioctl = f2fs_ioctl, |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 1950 | #ifdef CONFIG_COMPAT |
| 1951 | .compat_ioctl = f2fs_compat_ioctl, |
| 1952 | #endif |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1953 | .splice_read = generic_file_splice_read, |
Al Viro | 8d02076 | 2014-04-05 04:27:08 -0400 | [diff] [blame] | 1954 | .splice_write = iter_file_splice_write, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1955 | }; |