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 | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 185 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
| 186 | int datasync, bool atomic) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 187 | { |
| 188 | struct inode *inode = file->f_mapping->host; |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 189 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 190 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 191 | nid_t ino = inode->i_ino; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 192 | int ret = 0; |
| 193 | bool need_cp = false; |
| 194 | struct writeback_control wbc = { |
Jaegeuk Kim | c81bf1c | 2014-03-03 11:28:40 +0900 | [diff] [blame] | 195 | .sync_mode = WB_SYNC_ALL, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 196 | .nr_to_write = LONG_MAX, |
| 197 | .for_reclaim = 0, |
| 198 | }; |
| 199 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 200 | if (unlikely(f2fs_readonly(inode->i_sb))) |
Namjae Jeon | 1fa95b0 | 2012-12-01 10:56:01 +0900 | [diff] [blame] | 201 | return 0; |
| 202 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 203 | trace_f2fs_sync_file_enter(inode); |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 204 | |
| 205 | /* if fdatasync is triggered, let's do in-place-update */ |
Jaegeuk Kim | c46a155 | 2015-12-31 13:49:17 -0800 | [diff] [blame] | 206 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 207 | set_inode_flag(fi, FI_NEED_IPU); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 208 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 209 | clear_inode_flag(fi, FI_NEED_IPU); |
| 210 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 211 | if (ret) { |
| 212 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 213 | return ret; |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 214 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 215 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 216 | /* if the inode is dirty, let's recover all the time */ |
Jaegeuk Kim | 2286c02 | 2015-08-15 21:51:05 -0700 | [diff] [blame] | 217 | if (!datasync) { |
| 218 | f2fs_write_inode(inode, NULL); |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 219 | goto go_write; |
| 220 | } |
| 221 | |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 222 | /* |
| 223 | * if there is no written data, don't waste time to write recovery info. |
| 224 | */ |
| 225 | if (!is_inode_flag_set(fi, FI_APPEND_WRITE) && |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 226 | !exist_written_data(sbi, ino, APPEND_INO)) { |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 227 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 228 | /* it may call write_inode just prior to fsync */ |
| 229 | if (need_inode_page_update(sbi, ino)) |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 230 | goto go_write; |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 231 | |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 232 | if (is_inode_flag_set(fi, FI_UPDATE_WRITE) || |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 233 | exist_written_data(sbi, ino, UPDATE_INO)) |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 234 | goto flush_out; |
| 235 | goto out; |
| 236 | } |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 237 | go_write: |
Jaegeuk Kim | e5d2385 | 2013-07-03 10:55:52 +0900 | [diff] [blame] | 238 | /* |
| 239 | * Both of fdatasync() and fsync() are able to be recovered from |
| 240 | * sudden-power-off. |
| 241 | */ |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 242 | down_read(&fi->i_sem); |
| 243 | need_cp = need_do_checkpoint(inode); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 244 | up_read(&fi->i_sem); |
| 245 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 246 | if (need_cp) { |
| 247 | /* all the dirty node pages should be flushed for POR */ |
| 248 | ret = f2fs_sync_fs(inode->i_sb, 1); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 249 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 250 | /* |
| 251 | * We've secured consistency through sync_fs. Following pino |
| 252 | * will be used only for fsynced inodes after checkpoint. |
| 253 | */ |
| 254 | try_to_fix_pino(inode); |
Jaegeuk Kim | cff2852 | 2015-03-02 10:48:56 -0800 | [diff] [blame] | 255 | clear_inode_flag(fi, FI_APPEND_WRITE); |
| 256 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 257 | goto out; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 258 | } |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 259 | sync_nodes: |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 260 | ret = fsync_node_pages(sbi, ino, &wbc, atomic); |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 261 | if (ret) |
| 262 | goto out; |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 263 | |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 264 | /* if cp_error was enabled, we should avoid infinite loop */ |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 265 | if (unlikely(f2fs_cp_error(sbi))) { |
| 266 | ret = -EIO; |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 267 | goto out; |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 268 | } |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 269 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 270 | if (need_inode_block_update(sbi, ino)) { |
| 271 | mark_inode_dirty_sync(inode); |
| 272 | f2fs_write_inode(inode, NULL); |
| 273 | goto sync_nodes; |
| 274 | } |
| 275 | |
| 276 | ret = wait_on_node_pages_writeback(sbi, ino); |
| 277 | if (ret) |
| 278 | goto out; |
| 279 | |
| 280 | /* once recovery info is written, don't need to tack this */ |
Chao Yu | a49324f | 2015-12-15 13:29:47 +0800 | [diff] [blame] | 281 | remove_ino_entry(sbi, ino, APPEND_INO); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 282 | clear_inode_flag(fi, FI_APPEND_WRITE); |
| 283 | flush_out: |
Chao Yu | a49324f | 2015-12-15 13:29:47 +0800 | [diff] [blame] | 284 | remove_ino_entry(sbi, ino, UPDATE_INO); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 285 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
| 286 | ret = f2fs_issue_flush(sbi); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 287 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 288 | out: |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 289 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 290 | f2fs_trace_ios(NULL, 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 291 | return ret; |
| 292 | } |
| 293 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 294 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
| 295 | { |
| 296 | return f2fs_do_sync_file(file, start, end, datasync, false); |
| 297 | } |
| 298 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 299 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
| 300 | pgoff_t pgofs, int whence) |
| 301 | { |
| 302 | struct pagevec pvec; |
| 303 | int nr_pages; |
| 304 | |
| 305 | if (whence != SEEK_DATA) |
| 306 | return 0; |
| 307 | |
| 308 | /* find first dirty page index */ |
| 309 | pagevec_init(&pvec, 0); |
Jaegeuk Kim | 65b85cc | 2014-07-30 17:25:54 -0700 | [diff] [blame] | 310 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
| 311 | PAGECACHE_TAG_DIRTY, 1); |
Chao Yu | 80dd9c0 | 2016-02-24 17:20:44 +0800 | [diff] [blame] | 312 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 313 | pagevec_release(&pvec); |
| 314 | return pgofs; |
| 315 | } |
| 316 | |
| 317 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, |
| 318 | int whence) |
| 319 | { |
| 320 | switch (whence) { |
| 321 | case SEEK_DATA: |
| 322 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || |
| 323 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) |
| 324 | return true; |
| 325 | break; |
| 326 | case SEEK_HOLE: |
| 327 | if (blkaddr == NULL_ADDR) |
| 328 | return true; |
| 329 | break; |
| 330 | } |
| 331 | return false; |
| 332 | } |
| 333 | |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 334 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
| 335 | { |
| 336 | struct inode *inode = file->f_mapping->host; |
| 337 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 338 | struct dnode_of_data dn; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 339 | pgoff_t pgofs, end_offset, dirty; |
| 340 | loff_t data_ofs = offset; |
| 341 | loff_t isize; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 342 | int err = 0; |
| 343 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 344 | inode_lock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 345 | |
| 346 | isize = i_size_read(inode); |
| 347 | if (offset >= isize) |
| 348 | goto fail; |
| 349 | |
| 350 | /* handle inline data case */ |
Chao Yu | 622f28a | 2014-09-24 18:19:10 +0800 | [diff] [blame] | 351 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 352 | if (whence == SEEK_HOLE) |
| 353 | data_ofs = isize; |
| 354 | goto found; |
| 355 | } |
| 356 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 357 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 358 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 359 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
| 360 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 361 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 362 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 363 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); |
| 364 | if (err && err != -ENOENT) { |
| 365 | goto fail; |
| 366 | } else if (err == -ENOENT) { |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 367 | /* direct node does not exists */ |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 368 | if (whence == SEEK_DATA) { |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 369 | pgofs = get_next_page_offset(&dn, pgofs); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 370 | continue; |
| 371 | } else { |
| 372 | goto found; |
| 373 | } |
| 374 | } |
| 375 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 376 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 377 | |
| 378 | /* find data/hole in dnode block */ |
| 379 | for (; dn.ofs_in_node < end_offset; |
| 380 | dn.ofs_in_node++, pgofs++, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 381 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 382 | block_t blkaddr; |
| 383 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); |
| 384 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 385 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 386 | f2fs_put_dnode(&dn); |
| 387 | goto found; |
| 388 | } |
| 389 | } |
| 390 | f2fs_put_dnode(&dn); |
| 391 | } |
| 392 | |
| 393 | if (whence == SEEK_DATA) |
| 394 | goto fail; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 395 | found: |
Jaegeuk Kim | fe369bc | 2014-04-28 17:02:48 +0900 | [diff] [blame] | 396 | if (whence == SEEK_HOLE && data_ofs > isize) |
| 397 | data_ofs = isize; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 398 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 399 | return vfs_setpos(file, data_ofs, maxbytes); |
| 400 | fail: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 401 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 402 | return -ENXIO; |
| 403 | } |
| 404 | |
| 405 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) |
| 406 | { |
| 407 | struct inode *inode = file->f_mapping->host; |
| 408 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 409 | |
| 410 | switch (whence) { |
| 411 | case SEEK_SET: |
| 412 | case SEEK_CUR: |
| 413 | case SEEK_END: |
| 414 | return generic_file_llseek_size(file, offset, whence, |
| 415 | maxbytes, i_size_read(inode)); |
| 416 | case SEEK_DATA: |
| 417 | case SEEK_HOLE: |
Jaegeuk Kim | 0b4c5afde | 2014-09-08 10:59:43 -0700 | [diff] [blame] | 418 | if (offset < 0) |
| 419 | return -ENXIO; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 420 | return f2fs_seek_block(file, offset, whence); |
| 421 | } |
| 422 | |
| 423 | return -EINVAL; |
| 424 | } |
| 425 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 426 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
| 427 | { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 428 | struct inode *inode = file_inode(file); |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 429 | int err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 430 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 431 | if (f2fs_encrypted_inode(inode)) { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 432 | err = fscrypt_get_encryption_info(inode); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 433 | if (err) |
| 434 | return 0; |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 435 | if (!f2fs_encrypted_inode(inode)) |
| 436 | return -ENOKEY; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 437 | } |
| 438 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 439 | /* we don't need to use inline_data strictly */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 440 | err = f2fs_convert_inline_inode(inode); |
| 441 | if (err) |
| 442 | return err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 443 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 444 | file_accessed(file); |
| 445 | vma->vm_ops = &f2fs_file_vm_ops; |
| 446 | return 0; |
| 447 | } |
| 448 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 449 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
| 450 | { |
| 451 | int ret = generic_file_open(inode, filp); |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 452 | struct dentry *dir; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 453 | |
| 454 | if (!ret && f2fs_encrypted_inode(inode)) { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 455 | ret = fscrypt_get_encryption_info(inode); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 456 | if (ret) |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 457 | return -EACCES; |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 458 | if (!fscrypt_has_encryption_key(inode)) |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 459 | return -ENOKEY; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 460 | } |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 461 | dir = dget_parent(file_dentry(filp)); |
| 462 | if (f2fs_encrypted_inode(d_inode(dir)) && |
| 463 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { |
| 464 | dput(dir); |
Jaegeuk Kim | 8074bb5 | 2016-02-23 09:21:37 -0800 | [diff] [blame] | 465 | return -EPERM; |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 466 | } |
| 467 | dput(dir); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 468 | return ret; |
| 469 | } |
| 470 | |
Jaegeuk Kim | b292dcab | 2013-05-22 08:02:02 +0900 | [diff] [blame] | 471 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 472 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 473 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 474 | struct f2fs_node *raw_node; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 475 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 476 | __le32 *addr; |
| 477 | |
Gu Zheng | 4559071 | 2013-07-15 17:57:38 +0800 | [diff] [blame] | 478 | raw_node = F2FS_NODE(dn->node_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 479 | addr = blkaddr_in_node(raw_node) + ofs; |
| 480 | |
Chris Fries | 6c311ec | 2014-01-17 14:44:39 -0600 | [diff] [blame] | 481 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 482 | block_t blkaddr = le32_to_cpu(*addr); |
| 483 | if (blkaddr == NULL_ADDR) |
| 484 | continue; |
| 485 | |
Jaegeuk Kim | e1509cf | 2014-12-30 22:57:55 -0800 | [diff] [blame] | 486 | dn->data_blkaddr = NULL_ADDR; |
Chao Yu | 216a620 | 2015-03-19 19:23:32 +0800 | [diff] [blame] | 487 | set_data_blkaddr(dn); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 488 | invalidate_blocks(sbi, blkaddr); |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 489 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
| 490 | clear_inode_flag(F2FS_I(dn->inode), |
| 491 | FI_FIRST_BLOCK_WRITTEN); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 492 | nr_free++; |
| 493 | } |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 494 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 495 | if (nr_free) { |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 496 | pgoff_t fofs; |
| 497 | /* |
| 498 | * once we invalidate valid blkaddr in range [ofs, ofs + count], |
| 499 | * we will invalidate all blkaddr in the whole range. |
| 500 | */ |
| 501 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 502 | dn->inode) + ofs; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 503 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
Namjae Jeon | d7cc950 | 2013-06-08 21:25:40 +0900 | [diff] [blame] | 504 | dec_valid_block_count(sbi, dn->inode, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 505 | sync_inode_page(dn); |
| 506 | } |
| 507 | dn->ofs_in_node = ofs; |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 508 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 509 | f2fs_update_time(sbi, REQ_TIME); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 510 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
| 511 | dn->ofs_in_node, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 512 | return nr_free; |
| 513 | } |
| 514 | |
| 515 | void truncate_data_blocks(struct dnode_of_data *dn) |
| 516 | { |
| 517 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
| 518 | } |
| 519 | |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 520 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 521 | bool cache_only) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 522 | { |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 523 | unsigned offset = from & (PAGE_SIZE - 1); |
| 524 | pgoff_t index = from >> PAGE_SHIFT; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 525 | struct address_space *mapping = inode->i_mapping; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 526 | struct page *page; |
| 527 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 528 | if (!offset && !cache_only) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 529 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 530 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 531 | if (cache_only) { |
Jaegeuk Kim | a56c7c6 | 2015-10-09 15:11:38 -0700 | [diff] [blame] | 532 | page = f2fs_grab_cache_page(mapping, index, false); |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 533 | if (page && PageUptodate(page)) |
| 534 | goto truncate_out; |
| 535 | f2fs_put_page(page, 1); |
| 536 | return 0; |
| 537 | } |
| 538 | |
Jaegeuk Kim | a56c7c6 | 2015-10-09 15:11:38 -0700 | [diff] [blame] | 539 | page = get_lock_data_page(inode, index, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 540 | if (IS_ERR(page)) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 541 | return 0; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 542 | truncate_out: |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 543 | f2fs_wait_on_page_writeback(page, DATA, true); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 544 | zero_user(page, offset, PAGE_SIZE - offset); |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 545 | if (!cache_only || !f2fs_encrypted_inode(inode) || |
| 546 | !S_ISREG(inode->i_mode)) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 547 | set_page_dirty(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 548 | f2fs_put_page(page, 1); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 549 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 550 | } |
| 551 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 552 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 553 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 554 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 555 | unsigned int blocksize = inode->i_sb->s_blocksize; |
| 556 | struct dnode_of_data dn; |
| 557 | pgoff_t free_from; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 558 | int count = 0, err = 0; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 559 | struct page *ipage; |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 560 | bool truncate_page = false; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 561 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 562 | trace_f2fs_truncate_blocks_enter(inode, from); |
| 563 | |
Jaegeuk Kim | f7ef9b8 | 2015-02-09 12:02:44 -0800 | [diff] [blame] | 564 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 565 | |
Chao Yu | 09210c9 | 2016-05-05 19:13:03 +0800 | [diff] [blame] | 566 | if (free_from >= sbi->max_file_blocks) |
| 567 | goto free_partial; |
| 568 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 569 | if (lock) |
| 570 | f2fs_lock_op(sbi); |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 571 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 572 | ipage = get_node_page(sbi, inode->i_ino); |
| 573 | if (IS_ERR(ipage)) { |
| 574 | err = PTR_ERR(ipage); |
| 575 | goto out; |
| 576 | } |
| 577 | |
| 578 | if (f2fs_has_inline_data(inode)) { |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 579 | if (truncate_inline_inode(ipage, from)) |
| 580 | set_page_dirty(ipage); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 581 | f2fs_put_page(ipage, 1); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 582 | truncate_page = true; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 583 | goto out; |
| 584 | } |
| 585 | |
| 586 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame^] | 587 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 588 | if (err) { |
| 589 | if (err == -ENOENT) |
| 590 | goto free_next; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 591 | goto out; |
Jaegeuk Kim | 1ce86bf | 2014-10-15 10:24:34 -0700 | [diff] [blame] | 592 | } |
| 593 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 594 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 595 | |
| 596 | count -= dn.ofs_in_node; |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 597 | f2fs_bug_on(sbi, count < 0); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 598 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 599 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
| 600 | truncate_data_blocks_range(&dn, count); |
| 601 | free_from += count; |
| 602 | } |
| 603 | |
| 604 | f2fs_put_dnode(&dn); |
| 605 | free_next: |
| 606 | err = truncate_inode_blocks(inode, free_from); |
Jaegeuk Kim | 764d2c8 | 2014-11-11 11:01:01 -0800 | [diff] [blame] | 607 | out: |
| 608 | if (lock) |
| 609 | f2fs_unlock_op(sbi); |
Chao Yu | 09210c9 | 2016-05-05 19:13:03 +0800 | [diff] [blame] | 610 | free_partial: |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 611 | /* lastly zero out the first data page */ |
| 612 | if (!err) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 613 | err = truncate_partial_data_page(inode, from, truncate_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 614 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 615 | trace_f2fs_truncate_blocks_exit(inode, err); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 616 | return err; |
| 617 | } |
| 618 | |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 619 | int f2fs_truncate(struct inode *inode, bool lock) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 620 | { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 621 | int err; |
| 622 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 623 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 624 | S_ISLNK(inode->i_mode))) |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 625 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 626 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 627 | trace_f2fs_truncate(inode); |
| 628 | |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 629 | /* we should check inline_data size */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 630 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 631 | err = f2fs_convert_inline_inode(inode); |
| 632 | if (err) |
| 633 | return err; |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 634 | } |
| 635 | |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 636 | err = truncate_blocks(inode, i_size_read(inode), lock); |
| 637 | if (err) |
| 638 | return err; |
| 639 | |
| 640 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
| 641 | mark_inode_dirty(inode); |
| 642 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 643 | } |
| 644 | |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 645 | int f2fs_getattr(struct vfsmount *mnt, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 646 | struct dentry *dentry, struct kstat *stat) |
| 647 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 648 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 649 | generic_fillattr(inode, stat); |
| 650 | stat->blocks <<= 3; |
| 651 | return 0; |
| 652 | } |
| 653 | |
| 654 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 655 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) |
| 656 | { |
| 657 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 658 | unsigned int ia_valid = attr->ia_valid; |
| 659 | |
| 660 | if (ia_valid & ATTR_UID) |
| 661 | inode->i_uid = attr->ia_uid; |
| 662 | if (ia_valid & ATTR_GID) |
| 663 | inode->i_gid = attr->ia_gid; |
| 664 | if (ia_valid & ATTR_ATIME) |
| 665 | inode->i_atime = timespec_trunc(attr->ia_atime, |
| 666 | inode->i_sb->s_time_gran); |
| 667 | if (ia_valid & ATTR_MTIME) |
| 668 | inode->i_mtime = timespec_trunc(attr->ia_mtime, |
| 669 | inode->i_sb->s_time_gran); |
| 670 | if (ia_valid & ATTR_CTIME) |
| 671 | inode->i_ctime = timespec_trunc(attr->ia_ctime, |
| 672 | inode->i_sb->s_time_gran); |
| 673 | if (ia_valid & ATTR_MODE) { |
| 674 | umode_t mode = attr->ia_mode; |
| 675 | |
| 676 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) |
| 677 | mode &= ~S_ISGID; |
| 678 | set_acl_inode(fi, mode); |
| 679 | } |
| 680 | } |
| 681 | #else |
| 682 | #define __setattr_copy setattr_copy |
| 683 | #endif |
| 684 | |
| 685 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) |
| 686 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 687 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 688 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 689 | int err; |
| 690 | |
| 691 | err = inode_change_ok(inode, attr); |
| 692 | if (err) |
| 693 | return err; |
| 694 | |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 695 | if (attr->ia_valid & ATTR_SIZE) { |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 696 | if (f2fs_encrypted_inode(inode) && |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 697 | fscrypt_get_encryption_info(inode)) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 698 | return -EACCES; |
| 699 | |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 700 | if (attr->ia_size <= i_size_read(inode)) { |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 701 | truncate_setsize(inode, attr->ia_size); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 702 | err = f2fs_truncate(inode, true); |
| 703 | if (err) |
| 704 | return err; |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 705 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 706 | } else { |
| 707 | /* |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 708 | * do not trim all blocks after i_size if target size is |
| 709 | * larger than i_size. |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 710 | */ |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 711 | truncate_setsize(inode, attr->ia_size); |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 712 | |
| 713 | /* should convert inline inode here */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 714 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 715 | err = f2fs_convert_inline_inode(inode); |
| 716 | if (err) |
| 717 | return err; |
| 718 | } |
Chao Yu | 345a6b2 | 2015-09-28 17:46:01 +0800 | [diff] [blame] | 719 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 720 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | __setattr_copy(inode, attr); |
| 724 | |
| 725 | if (attr->ia_valid & ATTR_MODE) { |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 726 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 727 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
| 728 | inode->i_mode = fi->i_acl_mode; |
| 729 | clear_inode_flag(fi, FI_ACL_MODE); |
| 730 | } |
| 731 | } |
| 732 | |
| 733 | mark_inode_dirty(inode); |
| 734 | return err; |
| 735 | } |
| 736 | |
| 737 | const struct inode_operations f2fs_file_inode_operations = { |
| 738 | .getattr = f2fs_getattr, |
| 739 | .setattr = f2fs_setattr, |
| 740 | .get_acl = f2fs_get_acl, |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 741 | .set_acl = f2fs_set_acl, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 742 | #ifdef CONFIG_F2FS_FS_XATTR |
| 743 | .setxattr = generic_setxattr, |
| 744 | .getxattr = generic_getxattr, |
| 745 | .listxattr = f2fs_listxattr, |
| 746 | .removexattr = generic_removexattr, |
| 747 | #endif |
Jaegeuk Kim | 9ab7013 | 2014-06-08 04:30:14 +0900 | [diff] [blame] | 748 | .fiemap = f2fs_fiemap, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 749 | }; |
| 750 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 751 | static int fill_zero(struct inode *inode, pgoff_t index, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 752 | loff_t start, loff_t len) |
| 753 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 754 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 755 | struct page *page; |
| 756 | |
| 757 | if (!len) |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 758 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 759 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 760 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | bd43df0 | 2013-01-25 18:33:41 +0900 | [diff] [blame] | 761 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 762 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 64aa7ed | 2013-05-20 09:55:50 +0900 | [diff] [blame] | 763 | page = get_new_data_page(inode, NULL, index, false); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 764 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 765 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 766 | if (IS_ERR(page)) |
| 767 | return PTR_ERR(page); |
| 768 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 769 | f2fs_wait_on_page_writeback(page, DATA, true); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 770 | zero_user(page, start, len); |
| 771 | set_page_dirty(page); |
| 772 | f2fs_put_page(page, 1); |
| 773 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 774 | } |
| 775 | |
| 776 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
| 777 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 778 | int err; |
| 779 | |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 780 | while (pg_start < pg_end) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 781 | struct dnode_of_data dn; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 782 | pgoff_t end_offset, count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 783 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 784 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 785 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 786 | if (err) { |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 787 | if (err == -ENOENT) { |
| 788 | pg_start++; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 789 | continue; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 790 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 791 | return err; |
| 792 | } |
| 793 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 794 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 795 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
| 796 | |
| 797 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); |
| 798 | |
| 799 | truncate_data_blocks_range(&dn, count); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 800 | f2fs_put_dnode(&dn); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 801 | |
| 802 | pg_start += count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 803 | } |
| 804 | return 0; |
| 805 | } |
| 806 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 807 | 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] | 808 | { |
| 809 | pgoff_t pg_start, pg_end; |
| 810 | loff_t off_start, off_end; |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 811 | int ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 812 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 813 | ret = f2fs_convert_inline_inode(inode); |
| 814 | if (ret) |
| 815 | return ret; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 816 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 817 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 818 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 819 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 820 | off_start = offset & (PAGE_SIZE - 1); |
| 821 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 822 | |
| 823 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 824 | ret = fill_zero(inode, pg_start, off_start, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 825 | off_end - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 826 | if (ret) |
| 827 | return ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 828 | } else { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 829 | if (off_start) { |
| 830 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 831 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 832 | if (ret) |
| 833 | return ret; |
| 834 | } |
| 835 | if (off_end) { |
| 836 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 837 | if (ret) |
| 838 | return ret; |
| 839 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 840 | |
| 841 | if (pg_start < pg_end) { |
| 842 | struct address_space *mapping = inode->i_mapping; |
| 843 | loff_t blk_start, blk_end; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 844 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jason Hrycay | 1127a3d | 2013-04-08 20:16:44 -0500 | [diff] [blame] | 845 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 846 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 847 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 848 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
| 849 | blk_end = (loff_t)pg_end << PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 850 | truncate_inode_pages_range(mapping, blk_start, |
| 851 | blk_end - 1); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 852 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 853 | f2fs_lock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 854 | ret = truncate_hole(inode, pg_start, pg_end); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 855 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 856 | } |
| 857 | } |
| 858 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 859 | return ret; |
| 860 | } |
| 861 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 862 | static int __exchange_data_block(struct inode *inode, pgoff_t src, |
| 863 | pgoff_t dst, bool full) |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 864 | { |
| 865 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 866 | struct dnode_of_data dn; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 867 | block_t new_addr; |
| 868 | bool do_replace = false; |
| 869 | int ret; |
| 870 | |
| 871 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 872 | ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA); |
| 873 | if (ret && ret != -ENOENT) { |
| 874 | return ret; |
| 875 | } else if (ret == -ENOENT) { |
| 876 | new_addr = NULL_ADDR; |
| 877 | } else { |
| 878 | new_addr = dn.data_blkaddr; |
| 879 | if (!is_checkpointed_data(sbi, new_addr)) { |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 880 | /* do not invalidate this block address */ |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 881 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 882 | do_replace = true; |
| 883 | } |
| 884 | f2fs_put_dnode(&dn); |
| 885 | } |
| 886 | |
| 887 | if (new_addr == NULL_ADDR) |
| 888 | return full ? truncate_hole(inode, dst, dst + 1) : 0; |
| 889 | |
| 890 | if (do_replace) { |
| 891 | struct page *ipage = get_node_page(sbi, inode->i_ino); |
| 892 | struct node_info ni; |
| 893 | |
| 894 | if (IS_ERR(ipage)) { |
| 895 | ret = PTR_ERR(ipage); |
| 896 | goto err_out; |
| 897 | } |
| 898 | |
| 899 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
| 900 | ret = f2fs_reserve_block(&dn, dst); |
| 901 | if (ret) |
| 902 | goto err_out; |
| 903 | |
| 904 | truncate_data_blocks_range(&dn, 1); |
| 905 | |
| 906 | get_node_info(sbi, dn.nid, &ni); |
| 907 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr, |
Chao Yu | 28bc106 | 2016-02-06 14:40:34 +0800 | [diff] [blame] | 908 | ni.version, true, false); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 909 | f2fs_put_dnode(&dn); |
| 910 | } else { |
| 911 | struct page *psrc, *pdst; |
| 912 | |
Jaegeuk Kim | a56c7c6 | 2015-10-09 15:11:38 -0700 | [diff] [blame] | 913 | psrc = get_lock_data_page(inode, src, true); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 914 | if (IS_ERR(psrc)) |
| 915 | return PTR_ERR(psrc); |
Jaegeuk Kim | 8ef2af45 | 2016-02-08 14:17:38 -0800 | [diff] [blame] | 916 | pdst = get_new_data_page(inode, NULL, dst, true); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 917 | if (IS_ERR(pdst)) { |
| 918 | f2fs_put_page(psrc, 1); |
| 919 | return PTR_ERR(pdst); |
| 920 | } |
| 921 | f2fs_copy_page(psrc, pdst); |
| 922 | set_page_dirty(pdst); |
| 923 | f2fs_put_page(pdst, 1); |
| 924 | f2fs_put_page(psrc, 1); |
| 925 | |
| 926 | return truncate_hole(inode, src, src + 1); |
| 927 | } |
| 928 | return 0; |
| 929 | |
| 930 | err_out: |
| 931 | if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) { |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 932 | f2fs_update_data_blkaddr(&dn, new_addr); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 933 | f2fs_put_dnode(&dn); |
| 934 | } |
| 935 | return ret; |
| 936 | } |
| 937 | |
| 938 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
| 939 | { |
| 940 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 941 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
| 942 | int ret = 0; |
| 943 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 944 | for (; end < nrpages; start++, end++) { |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 945 | f2fs_balance_fs(sbi, true); |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 946 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 947 | ret = __exchange_data_block(inode, end, start, true); |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 948 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 949 | if (ret) |
| 950 | break; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 951 | } |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 952 | return ret; |
| 953 | } |
| 954 | |
| 955 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) |
| 956 | { |
| 957 | pgoff_t pg_start, pg_end; |
| 958 | loff_t new_size; |
| 959 | int ret; |
| 960 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 961 | if (offset + len >= i_size_read(inode)) |
| 962 | return -EINVAL; |
| 963 | |
| 964 | /* collapse range should be aligned to block size of f2fs. */ |
| 965 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 966 | return -EINVAL; |
| 967 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 968 | ret = f2fs_convert_inline_inode(inode); |
| 969 | if (ret) |
| 970 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 971 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 972 | pg_start = offset >> PAGE_SHIFT; |
| 973 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 974 | |
| 975 | /* write out all dirty pages from offset */ |
| 976 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 977 | if (ret) |
| 978 | return ret; |
| 979 | |
| 980 | truncate_pagecache(inode, offset); |
| 981 | |
| 982 | ret = f2fs_do_collapse(inode, pg_start, pg_end); |
| 983 | if (ret) |
| 984 | return ret; |
| 985 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 986 | /* write out all moved pages, if possible */ |
| 987 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 988 | truncate_pagecache(inode, offset); |
| 989 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 990 | new_size = i_size_read(inode) - len; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 991 | truncate_pagecache(inode, new_size); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 992 | |
| 993 | ret = truncate_blocks(inode, new_size, true); |
| 994 | if (!ret) |
| 995 | i_size_write(inode, new_size); |
| 996 | |
| 997 | return ret; |
| 998 | } |
| 999 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1000 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
| 1001 | int mode) |
| 1002 | { |
| 1003 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1004 | struct address_space *mapping = inode->i_mapping; |
| 1005 | pgoff_t index, pg_start, pg_end; |
| 1006 | loff_t new_size = i_size_read(inode); |
| 1007 | loff_t off_start, off_end; |
| 1008 | int ret = 0; |
| 1009 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1010 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1011 | if (ret) |
| 1012 | return ret; |
| 1013 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1014 | ret = f2fs_convert_inline_inode(inode); |
| 1015 | if (ret) |
| 1016 | return ret; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1017 | |
| 1018 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
| 1019 | if (ret) |
| 1020 | return ret; |
| 1021 | |
| 1022 | truncate_pagecache_range(inode, offset, offset + len - 1); |
| 1023 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1024 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 1025 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1026 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1027 | off_start = offset & (PAGE_SIZE - 1); |
| 1028 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1029 | |
| 1030 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1031 | ret = fill_zero(inode, pg_start, off_start, |
| 1032 | off_end - off_start); |
| 1033 | if (ret) |
| 1034 | return ret; |
| 1035 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1036 | if (offset + len > new_size) |
| 1037 | new_size = offset + len; |
| 1038 | new_size = max_t(loff_t, new_size, offset + len); |
| 1039 | } else { |
| 1040 | if (off_start) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1041 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1042 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1043 | if (ret) |
| 1044 | return ret; |
| 1045 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1046 | new_size = max_t(loff_t, new_size, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1047 | (loff_t)pg_start << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1048 | } |
| 1049 | |
| 1050 | for (index = pg_start; index < pg_end; index++) { |
| 1051 | struct dnode_of_data dn; |
| 1052 | struct page *ipage; |
| 1053 | |
| 1054 | f2fs_lock_op(sbi); |
| 1055 | |
| 1056 | ipage = get_node_page(sbi, inode->i_ino); |
| 1057 | if (IS_ERR(ipage)) { |
| 1058 | ret = PTR_ERR(ipage); |
| 1059 | f2fs_unlock_op(sbi); |
| 1060 | goto out; |
| 1061 | } |
| 1062 | |
| 1063 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
| 1064 | ret = f2fs_reserve_block(&dn, index); |
| 1065 | if (ret) { |
| 1066 | f2fs_unlock_op(sbi); |
| 1067 | goto out; |
| 1068 | } |
| 1069 | |
| 1070 | if (dn.data_blkaddr != NEW_ADDR) { |
| 1071 | invalidate_blocks(sbi, dn.data_blkaddr); |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 1072 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1073 | } |
| 1074 | f2fs_put_dnode(&dn); |
| 1075 | f2fs_unlock_op(sbi); |
| 1076 | |
| 1077 | new_size = max_t(loff_t, new_size, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1078 | (loff_t)(index + 1) << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1079 | } |
| 1080 | |
| 1081 | if (off_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1082 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 1083 | if (ret) |
| 1084 | goto out; |
| 1085 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1086 | new_size = max_t(loff_t, new_size, offset + len); |
| 1087 | } |
| 1088 | } |
| 1089 | |
| 1090 | out: |
| 1091 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { |
| 1092 | i_size_write(inode, new_size); |
| 1093 | mark_inode_dirty(inode); |
| 1094 | update_inode_page(inode); |
| 1095 | } |
| 1096 | |
| 1097 | return ret; |
| 1098 | } |
| 1099 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1100 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
| 1101 | { |
| 1102 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1103 | pgoff_t pg_start, pg_end, delta, nrpages, idx; |
| 1104 | loff_t new_size; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1105 | int ret = 0; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1106 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1107 | new_size = i_size_read(inode) + len; |
| 1108 | if (new_size > inode->i_sb->s_maxbytes) |
| 1109 | return -EFBIG; |
| 1110 | |
| 1111 | if (offset >= i_size_read(inode)) |
| 1112 | return -EINVAL; |
| 1113 | |
| 1114 | /* insert range should be aligned to block size of f2fs. */ |
| 1115 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 1116 | return -EINVAL; |
| 1117 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1118 | ret = f2fs_convert_inline_inode(inode); |
| 1119 | if (ret) |
| 1120 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 1121 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1122 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1123 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1124 | ret = truncate_blocks(inode, i_size_read(inode), true); |
| 1125 | if (ret) |
| 1126 | return ret; |
| 1127 | |
| 1128 | /* write out all dirty pages from offset */ |
| 1129 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1130 | if (ret) |
| 1131 | return ret; |
| 1132 | |
| 1133 | truncate_pagecache(inode, offset); |
| 1134 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1135 | pg_start = offset >> PAGE_SHIFT; |
| 1136 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1137 | delta = pg_end - pg_start; |
| 1138 | nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
| 1139 | |
| 1140 | for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) { |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1141 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1142 | ret = __exchange_data_block(inode, idx, idx + delta, false); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1143 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1144 | if (ret) |
| 1145 | break; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1146 | } |
| 1147 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1148 | /* write out all moved pages, if possible */ |
| 1149 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1150 | truncate_pagecache(inode, offset); |
| 1151 | |
| 1152 | if (!ret) |
| 1153 | i_size_write(inode, new_size); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1154 | return ret; |
| 1155 | } |
| 1156 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1157 | static int expand_inode_data(struct inode *inode, loff_t offset, |
| 1158 | loff_t len, int mode) |
| 1159 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1160 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1161 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
| 1162 | pgoff_t pg_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1163 | loff_t new_size = i_size_read(inode); |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1164 | loff_t off_end; |
| 1165 | int ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1166 | |
| 1167 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1168 | if (ret) |
| 1169 | return ret; |
| 1170 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1171 | ret = f2fs_convert_inline_inode(inode); |
| 1172 | if (ret) |
| 1173 | return ret; |
Jaegeuk Kim | 9e09fc8 | 2013-12-27 12:28:59 +0900 | [diff] [blame] | 1174 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1175 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1176 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1177 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1178 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1179 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1180 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
| 1181 | map.m_len = pg_end - map.m_lblk; |
| 1182 | if (off_end) |
| 1183 | map.m_len++; |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1184 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1185 | ret = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
| 1186 | if (ret) { |
| 1187 | pgoff_t last_off; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1188 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1189 | if (!map.m_len) |
| 1190 | return ret; |
Jaegeuk Kim | 98397ff | 2014-06-13 13:07:31 +0900 | [diff] [blame] | 1191 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1192 | last_off = map.m_lblk + map.m_len - 1; |
| 1193 | |
| 1194 | /* update new size to the failed position */ |
| 1195 | new_size = (last_off == pg_end) ? offset + len: |
| 1196 | (loff_t)(last_off + 1) << PAGE_SHIFT; |
| 1197 | } else { |
| 1198 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1199 | } |
| 1200 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1201 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1202 | i_size_write(inode, new_size); |
| 1203 | mark_inode_dirty(inode); |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1204 | update_inode_page(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1205 | } |
| 1206 | |
| 1207 | return ret; |
| 1208 | } |
| 1209 | |
| 1210 | static long f2fs_fallocate(struct file *file, int mode, |
| 1211 | loff_t offset, loff_t len) |
| 1212 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1213 | struct inode *inode = file_inode(file); |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1214 | long ret = 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1215 | |
Chao Yu | c998012 | 2015-09-11 14:39:02 +0800 | [diff] [blame] | 1216 | /* f2fs only support ->fallocate for regular file */ |
| 1217 | if (!S_ISREG(inode->i_mode)) |
| 1218 | return -EINVAL; |
| 1219 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1220 | if (f2fs_encrypted_inode(inode) && |
| 1221 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1222 | return -EOPNOTSUPP; |
| 1223 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1224 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1225 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
| 1226 | FALLOC_FL_INSERT_RANGE)) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1227 | return -EOPNOTSUPP; |
| 1228 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1229 | inode_lock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1230 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1231 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
| 1232 | if (offset >= inode->i_size) |
| 1233 | goto out; |
| 1234 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 1235 | ret = punch_hole(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1236 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
| 1237 | ret = f2fs_collapse_range(inode, offset, len); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1238 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
| 1239 | ret = f2fs_zero_range(inode, offset, len, mode); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1240 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
| 1241 | ret = f2fs_insert_range(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1242 | } else { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1243 | ret = expand_inode_data(inode, offset, len, mode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1244 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1245 | |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1246 | if (!ret) { |
| 1247 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
| 1248 | mark_inode_dirty(inode); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1249 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1250 | } |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1251 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1252 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1253 | inode_unlock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1254 | |
Namjae Jeon | c01e285 | 2013-04-23 17:00:52 +0900 | [diff] [blame] | 1255 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1256 | return ret; |
| 1257 | } |
| 1258 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1259 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
| 1260 | { |
Jaegeuk Kim | de5307e | 2016-04-11 11:51:51 -0700 | [diff] [blame] | 1261 | /* |
| 1262 | * f2fs_relase_file is called at every close calls. So we should |
| 1263 | * not drop any inmemory pages by close called by other process. |
| 1264 | */ |
| 1265 | if (!(filp->f_mode & FMODE_WRITE) || |
| 1266 | atomic_read(&inode->i_writecount) != 1) |
| 1267 | return 0; |
| 1268 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1269 | /* some remained atomic pages should discarded */ |
| 1270 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1271 | drop_inmem_pages(inode); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1272 | if (f2fs_is_volatile_file(inode)) { |
Jaegeuk Kim | 26dc3d4 | 2016-04-11 13:15:10 -0700 | [diff] [blame] | 1273 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1274 | set_inode_flag(F2FS_I(inode), FI_DROP_CACHE); |
| 1275 | filemap_fdatawrite(inode->i_mapping); |
| 1276 | clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE); |
| 1277 | } |
| 1278 | return 0; |
| 1279 | } |
| 1280 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1281 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
| 1282 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) |
| 1283 | |
| 1284 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) |
| 1285 | { |
| 1286 | if (S_ISDIR(mode)) |
| 1287 | return flags; |
| 1288 | else if (S_ISREG(mode)) |
| 1289 | return flags & F2FS_REG_FLMASK; |
| 1290 | else |
| 1291 | return flags & F2FS_OTHER_FLMASK; |
| 1292 | } |
| 1293 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1294 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1295 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1296 | struct inode *inode = file_inode(filp); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1297 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1298 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
| 1299 | return put_user(flags, (int __user *)arg); |
| 1300 | } |
| 1301 | |
| 1302 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
| 1303 | { |
| 1304 | struct inode *inode = file_inode(filp); |
| 1305 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 1306 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
| 1307 | unsigned int oldflags; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1308 | int ret; |
| 1309 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1310 | ret = mnt_want_write_file(filp); |
| 1311 | if (ret) |
| 1312 | return ret; |
| 1313 | |
| 1314 | if (!inode_owner_or_capable(inode)) { |
| 1315 | ret = -EACCES; |
| 1316 | goto out; |
| 1317 | } |
| 1318 | |
| 1319 | if (get_user(flags, (int __user *)arg)) { |
| 1320 | ret = -EFAULT; |
| 1321 | goto out; |
| 1322 | } |
| 1323 | |
| 1324 | flags = f2fs_mask_flags(inode->i_mode, flags); |
| 1325 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1326 | inode_lock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1327 | |
| 1328 | oldflags = fi->i_flags; |
| 1329 | |
| 1330 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
| 1331 | if (!capable(CAP_LINUX_IMMUTABLE)) { |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1332 | inode_unlock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1333 | ret = -EPERM; |
| 1334 | goto out; |
| 1335 | } |
| 1336 | } |
| 1337 | |
| 1338 | flags = flags & FS_FL_USER_MODIFIABLE; |
| 1339 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; |
| 1340 | fi->i_flags = flags; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1341 | inode_unlock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1342 | |
| 1343 | f2fs_set_inode_flags(inode); |
| 1344 | inode->i_ctime = CURRENT_TIME; |
| 1345 | mark_inode_dirty(inode); |
| 1346 | out: |
| 1347 | mnt_drop_write_file(filp); |
| 1348 | return ret; |
| 1349 | } |
| 1350 | |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1351 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
| 1352 | { |
| 1353 | struct inode *inode = file_inode(filp); |
| 1354 | |
| 1355 | return put_user(inode->i_generation, (int __user *)arg); |
| 1356 | } |
| 1357 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1358 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
| 1359 | { |
| 1360 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1361 | int ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1362 | |
| 1363 | if (!inode_owner_or_capable(inode)) |
| 1364 | return -EACCES; |
| 1365 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1366 | if (f2fs_is_atomic_file(inode)) |
| 1367 | return 0; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1368 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1369 | ret = f2fs_convert_inline_inode(inode); |
| 1370 | if (ret) |
| 1371 | return ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1372 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1373 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1374 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
| 1375 | |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1376 | if (!get_dirty_pages(inode)) |
| 1377 | return 0; |
| 1378 | |
| 1379 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, |
| 1380 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
| 1381 | inode->i_ino, get_dirty_pages(inode)); |
| 1382 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); |
| 1383 | if (ret) |
| 1384 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
| 1385 | return ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1386 | } |
| 1387 | |
| 1388 | static int f2fs_ioc_commit_atomic_write(struct file *filp) |
| 1389 | { |
| 1390 | struct inode *inode = file_inode(filp); |
| 1391 | int ret; |
| 1392 | |
| 1393 | if (!inode_owner_or_capable(inode)) |
| 1394 | return -EACCES; |
| 1395 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1396 | if (f2fs_is_volatile_file(inode)) |
| 1397 | return 0; |
| 1398 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1399 | ret = mnt_want_write_file(filp); |
| 1400 | if (ret) |
| 1401 | return ret; |
| 1402 | |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1403 | if (f2fs_is_atomic_file(inode)) { |
| 1404 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1405 | ret = commit_inmem_pages(inode); |
Jaegeuk Kim | 447135a | 2016-01-09 17:08:38 -0800 | [diff] [blame] | 1406 | if (ret) { |
| 1407 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1408 | goto err_out; |
Jaegeuk Kim | 447135a | 2016-01-09 17:08:38 -0800 | [diff] [blame] | 1409 | } |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1410 | } |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1411 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1412 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1413 | err_out: |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1414 | mnt_drop_write_file(filp); |
| 1415 | return ret; |
| 1416 | } |
| 1417 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1418 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
| 1419 | { |
| 1420 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1421 | int ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1422 | |
| 1423 | if (!inode_owner_or_capable(inode)) |
| 1424 | return -EACCES; |
| 1425 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1426 | if (f2fs_is_volatile_file(inode)) |
| 1427 | return 0; |
| 1428 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1429 | ret = f2fs_convert_inline_inode(inode); |
| 1430 | if (ret) |
| 1431 | return ret; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 1432 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1433 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1434 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1435 | return 0; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1436 | } |
| 1437 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1438 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
| 1439 | { |
| 1440 | struct inode *inode = file_inode(filp); |
| 1441 | |
| 1442 | if (!inode_owner_or_capable(inode)) |
| 1443 | return -EACCES; |
| 1444 | |
| 1445 | if (!f2fs_is_volatile_file(inode)) |
| 1446 | return 0; |
| 1447 | |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 1448 | if (!f2fs_is_first_block_written(inode)) |
| 1449 | return truncate_partial_data_page(inode, 0, true); |
| 1450 | |
Nicholas Krause | 538e17e | 2015-09-06 08:28:46 -0400 | [diff] [blame] | 1451 | return punch_hole(inode, 0, F2FS_BLKSIZE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1452 | } |
| 1453 | |
| 1454 | static int f2fs_ioc_abort_volatile_write(struct file *filp) |
| 1455 | { |
| 1456 | struct inode *inode = file_inode(filp); |
| 1457 | int ret; |
| 1458 | |
| 1459 | if (!inode_owner_or_capable(inode)) |
| 1460 | return -EACCES; |
| 1461 | |
| 1462 | ret = mnt_want_write_file(filp); |
| 1463 | if (ret) |
| 1464 | return ret; |
| 1465 | |
Jaegeuk Kim | 26dc3d4 | 2016-04-11 13:15:10 -0700 | [diff] [blame] | 1466 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1467 | drop_inmem_pages(inode); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1468 | if (f2fs_is_volatile_file(inode)) { |
| 1469 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1470 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1471 | } |
Jaegeuk Kim | de6a8ec | 2015-06-08 17:51:10 -0700 | [diff] [blame] | 1472 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1473 | mnt_drop_write_file(filp); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1474 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1475 | return ret; |
| 1476 | } |
| 1477 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1478 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
| 1479 | { |
| 1480 | struct inode *inode = file_inode(filp); |
| 1481 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1482 | struct super_block *sb = sbi->sb; |
| 1483 | __u32 in; |
| 1484 | |
| 1485 | if (!capable(CAP_SYS_ADMIN)) |
| 1486 | return -EPERM; |
| 1487 | |
| 1488 | if (get_user(in, (__u32 __user *)arg)) |
| 1489 | return -EFAULT; |
| 1490 | |
| 1491 | switch (in) { |
| 1492 | case F2FS_GOING_DOWN_FULLSYNC: |
| 1493 | sb = freeze_bdev(sb->s_bdev); |
| 1494 | if (sb && !IS_ERR(sb)) { |
| 1495 | f2fs_stop_checkpoint(sbi); |
| 1496 | thaw_bdev(sb->s_bdev, sb); |
| 1497 | } |
| 1498 | break; |
| 1499 | case F2FS_GOING_DOWN_METASYNC: |
| 1500 | /* do checkpoint only */ |
| 1501 | f2fs_sync_fs(sb, 1); |
| 1502 | f2fs_stop_checkpoint(sbi); |
| 1503 | break; |
| 1504 | case F2FS_GOING_DOWN_NOSYNC: |
| 1505 | f2fs_stop_checkpoint(sbi); |
| 1506 | break; |
Jaegeuk Kim | c912a82 | 2015-10-07 09:46:37 -0700 | [diff] [blame] | 1507 | case F2FS_GOING_DOWN_METAFLUSH: |
| 1508 | sync_meta_pages(sbi, META, LONG_MAX); |
| 1509 | f2fs_stop_checkpoint(sbi); |
| 1510 | break; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1511 | default: |
| 1512 | return -EINVAL; |
| 1513 | } |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1514 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1515 | return 0; |
| 1516 | } |
| 1517 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1518 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
| 1519 | { |
| 1520 | struct inode *inode = file_inode(filp); |
| 1521 | struct super_block *sb = inode->i_sb; |
| 1522 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
| 1523 | struct fstrim_range range; |
| 1524 | int ret; |
| 1525 | |
| 1526 | if (!capable(CAP_SYS_ADMIN)) |
| 1527 | return -EPERM; |
| 1528 | |
| 1529 | if (!blk_queue_discard(q)) |
| 1530 | return -EOPNOTSUPP; |
| 1531 | |
| 1532 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
| 1533 | sizeof(range))) |
| 1534 | return -EFAULT; |
| 1535 | |
| 1536 | range.minlen = max((unsigned int)range.minlen, |
| 1537 | q->limits.discard_granularity); |
| 1538 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); |
| 1539 | if (ret < 0) |
| 1540 | return ret; |
| 1541 | |
| 1542 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
| 1543 | sizeof(range))) |
| 1544 | return -EFAULT; |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1545 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1546 | return 0; |
| 1547 | } |
| 1548 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1549 | static bool uuid_is_nonzero(__u8 u[16]) |
| 1550 | { |
| 1551 | int i; |
| 1552 | |
| 1553 | for (i = 0; i < 16; i++) |
| 1554 | if (u[i]) |
| 1555 | return true; |
| 1556 | return false; |
| 1557 | } |
| 1558 | |
| 1559 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) |
| 1560 | { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1561 | struct fscrypt_policy policy; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1562 | struct inode *inode = file_inode(filp); |
| 1563 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1564 | if (copy_from_user(&policy, (struct fscrypt_policy __user *)arg, |
| 1565 | sizeof(policy))) |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1566 | return -EFAULT; |
| 1567 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1568 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1569 | return fscrypt_process_policy(inode, &policy); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1570 | } |
| 1571 | |
| 1572 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) |
| 1573 | { |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1574 | struct fscrypt_policy policy; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1575 | struct inode *inode = file_inode(filp); |
| 1576 | int err; |
| 1577 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1578 | err = fscrypt_get_policy(inode, &policy); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1579 | if (err) |
| 1580 | return err; |
| 1581 | |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1582 | if (copy_to_user((struct fscrypt_policy __user *)arg, &policy, sizeof(policy))) |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1583 | return -EFAULT; |
| 1584 | return 0; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1585 | } |
| 1586 | |
| 1587 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) |
| 1588 | { |
| 1589 | struct inode *inode = file_inode(filp); |
| 1590 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1591 | int err; |
| 1592 | |
| 1593 | if (!f2fs_sb_has_crypto(inode->i_sb)) |
| 1594 | return -EOPNOTSUPP; |
| 1595 | |
| 1596 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) |
| 1597 | goto got_it; |
| 1598 | |
| 1599 | err = mnt_want_write_file(filp); |
| 1600 | if (err) |
| 1601 | return err; |
| 1602 | |
| 1603 | /* update superblock with uuid */ |
| 1604 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); |
| 1605 | |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 1606 | err = f2fs_commit_super(sbi, false); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1607 | if (err) { |
| 1608 | /* undo new data */ |
| 1609 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); |
Chao Yu | e8240f6 | 2015-12-15 17:19:26 +0800 | [diff] [blame] | 1610 | mnt_drop_write_file(filp); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1611 | return err; |
| 1612 | } |
Chao Yu | e8240f6 | 2015-12-15 17:19:26 +0800 | [diff] [blame] | 1613 | mnt_drop_write_file(filp); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1614 | got_it: |
| 1615 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, |
| 1616 | 16)) |
| 1617 | return -EFAULT; |
| 1618 | return 0; |
| 1619 | } |
| 1620 | |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1621 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
| 1622 | { |
| 1623 | struct inode *inode = file_inode(filp); |
| 1624 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1625 | __u32 sync; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1626 | |
| 1627 | if (!capable(CAP_SYS_ADMIN)) |
| 1628 | return -EPERM; |
| 1629 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1630 | if (get_user(sync, (__u32 __user *)arg)) |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1631 | return -EFAULT; |
| 1632 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1633 | if (f2fs_readonly(sbi->sb)) |
| 1634 | return -EROFS; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1635 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1636 | if (!sync) { |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1637 | if (!mutex_trylock(&sbi->gc_mutex)) |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1638 | return -EBUSY; |
| 1639 | } else { |
| 1640 | mutex_lock(&sbi->gc_mutex); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1641 | } |
| 1642 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1643 | return f2fs_gc(sbi, sync); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1644 | } |
| 1645 | |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1646 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
| 1647 | { |
| 1648 | struct inode *inode = file_inode(filp); |
| 1649 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1650 | |
| 1651 | if (!capable(CAP_SYS_ADMIN)) |
| 1652 | return -EPERM; |
| 1653 | |
| 1654 | if (f2fs_readonly(sbi->sb)) |
| 1655 | return -EROFS; |
| 1656 | |
Chao Yu | e96248b | 2015-12-24 18:11:32 +0800 | [diff] [blame] | 1657 | return f2fs_sync_fs(sbi->sb, 1); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1658 | } |
| 1659 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1660 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
| 1661 | struct file *filp, |
| 1662 | struct f2fs_defragment *range) |
| 1663 | { |
| 1664 | struct inode *inode = file_inode(filp); |
Chao Yu | da85985 | 2016-01-26 15:42:58 +0800 | [diff] [blame] | 1665 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1666 | struct extent_info ei; |
| 1667 | pgoff_t pg_start, pg_end; |
Chao Yu | 3519e3f | 2015-12-01 11:56:52 +0800 | [diff] [blame] | 1668 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1669 | unsigned int total = 0, sec_num; |
Chao Yu | 3519e3f | 2015-12-01 11:56:52 +0800 | [diff] [blame] | 1670 | unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1671 | block_t blk_end = 0; |
| 1672 | bool fragmented = false; |
| 1673 | int err; |
| 1674 | |
| 1675 | /* if in-place-update policy is enabled, don't waste time here */ |
| 1676 | if (need_inplace_update(inode)) |
| 1677 | return -EINVAL; |
| 1678 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1679 | pg_start = range->start >> PAGE_SHIFT; |
| 1680 | pg_end = (range->start + range->len) >> PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1681 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1682 | f2fs_balance_fs(sbi, true); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1683 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1684 | inode_lock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1685 | |
| 1686 | /* writeback all dirty pages in the range */ |
| 1687 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, |
Fan Li | d8fe4f0 | 2015-12-14 13:34:00 +0800 | [diff] [blame] | 1688 | range->start + range->len - 1); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1689 | if (err) |
| 1690 | goto out; |
| 1691 | |
| 1692 | /* |
| 1693 | * lookup mapping info in extent cache, skip defragmenting if physical |
| 1694 | * block addresses are continuous. |
| 1695 | */ |
| 1696 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { |
| 1697 | if (ei.fofs + ei.len >= pg_end) |
| 1698 | goto out; |
| 1699 | } |
| 1700 | |
| 1701 | map.m_lblk = pg_start; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1702 | |
| 1703 | /* |
| 1704 | * lookup mapping info in dnode page cache, skip defragmenting if all |
| 1705 | * physical block addresses are continuous even if there are hole(s) |
| 1706 | * in logical blocks. |
| 1707 | */ |
| 1708 | while (map.m_lblk < pg_end) { |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 1709 | map.m_len = pg_end - map.m_lblk; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1710 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
| 1711 | if (err) |
| 1712 | goto out; |
| 1713 | |
| 1714 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
| 1715 | map.m_lblk++; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1716 | continue; |
| 1717 | } |
| 1718 | |
| 1719 | if (blk_end && blk_end != map.m_pblk) { |
| 1720 | fragmented = true; |
| 1721 | break; |
| 1722 | } |
| 1723 | blk_end = map.m_pblk + map.m_len; |
| 1724 | |
| 1725 | map.m_lblk += map.m_len; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1726 | } |
| 1727 | |
| 1728 | if (!fragmented) |
| 1729 | goto out; |
| 1730 | |
| 1731 | map.m_lblk = pg_start; |
| 1732 | map.m_len = pg_end - pg_start; |
| 1733 | |
| 1734 | sec_num = (map.m_len + pages_per_sec - 1) / pages_per_sec; |
| 1735 | |
| 1736 | /* |
| 1737 | * make sure there are enough free section for LFS allocation, this can |
| 1738 | * avoid defragment running in SSR mode when free section are allocated |
| 1739 | * intensively |
| 1740 | */ |
| 1741 | if (has_not_enough_free_secs(sbi, sec_num)) { |
| 1742 | err = -EAGAIN; |
| 1743 | goto out; |
| 1744 | } |
| 1745 | |
| 1746 | while (map.m_lblk < pg_end) { |
| 1747 | pgoff_t idx; |
| 1748 | int cnt = 0; |
| 1749 | |
| 1750 | do_map: |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 1751 | map.m_len = pg_end - map.m_lblk; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1752 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
| 1753 | if (err) |
| 1754 | goto clear_out; |
| 1755 | |
| 1756 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
| 1757 | map.m_lblk++; |
| 1758 | continue; |
| 1759 | } |
| 1760 | |
| 1761 | set_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); |
| 1762 | |
| 1763 | idx = map.m_lblk; |
| 1764 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { |
| 1765 | struct page *page; |
| 1766 | |
| 1767 | page = get_lock_data_page(inode, idx, true); |
| 1768 | if (IS_ERR(page)) { |
| 1769 | err = PTR_ERR(page); |
| 1770 | goto clear_out; |
| 1771 | } |
| 1772 | |
| 1773 | set_page_dirty(page); |
| 1774 | f2fs_put_page(page, 1); |
| 1775 | |
| 1776 | idx++; |
| 1777 | cnt++; |
| 1778 | total++; |
| 1779 | } |
| 1780 | |
| 1781 | map.m_lblk = idx; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1782 | |
| 1783 | if (idx < pg_end && cnt < blk_per_seg) |
| 1784 | goto do_map; |
| 1785 | |
| 1786 | clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); |
| 1787 | |
| 1788 | err = filemap_fdatawrite(inode->i_mapping); |
| 1789 | if (err) |
| 1790 | goto out; |
| 1791 | } |
| 1792 | clear_out: |
| 1793 | clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); |
| 1794 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1795 | inode_unlock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1796 | if (!err) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1797 | range->len = (u64)total << PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1798 | return err; |
| 1799 | } |
| 1800 | |
| 1801 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) |
| 1802 | { |
| 1803 | struct inode *inode = file_inode(filp); |
| 1804 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1805 | struct f2fs_defragment range; |
| 1806 | int err; |
| 1807 | |
| 1808 | if (!capable(CAP_SYS_ADMIN)) |
| 1809 | return -EPERM; |
| 1810 | |
| 1811 | if (!S_ISREG(inode->i_mode)) |
| 1812 | return -EINVAL; |
| 1813 | |
| 1814 | err = mnt_want_write_file(filp); |
| 1815 | if (err) |
| 1816 | return err; |
| 1817 | |
| 1818 | if (f2fs_readonly(sbi->sb)) { |
| 1819 | err = -EROFS; |
| 1820 | goto out; |
| 1821 | } |
| 1822 | |
| 1823 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, |
| 1824 | sizeof(range))) { |
| 1825 | err = -EFAULT; |
| 1826 | goto out; |
| 1827 | } |
| 1828 | |
| 1829 | /* verify alignment of offset & size */ |
| 1830 | if (range.start & (F2FS_BLKSIZE - 1) || |
| 1831 | range.len & (F2FS_BLKSIZE - 1)) { |
| 1832 | err = -EINVAL; |
| 1833 | goto out; |
| 1834 | } |
| 1835 | |
| 1836 | err = f2fs_defragment_range(sbi, filp, &range); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1837 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1838 | if (err < 0) |
| 1839 | goto out; |
| 1840 | |
| 1841 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, |
| 1842 | sizeof(range))) |
| 1843 | err = -EFAULT; |
| 1844 | out: |
| 1845 | mnt_drop_write_file(filp); |
| 1846 | return err; |
| 1847 | } |
| 1848 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1849 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
| 1850 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1851 | switch (cmd) { |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 1852 | case F2FS_IOC_GETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1853 | return f2fs_ioc_getflags(filp, arg); |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 1854 | case F2FS_IOC_SETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1855 | return f2fs_ioc_setflags(filp, arg); |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1856 | case F2FS_IOC_GETVERSION: |
| 1857 | return f2fs_ioc_getversion(filp, arg); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1858 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 1859 | return f2fs_ioc_start_atomic_write(filp); |
| 1860 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 1861 | return f2fs_ioc_commit_atomic_write(filp); |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1862 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 1863 | return f2fs_ioc_start_volatile_write(filp); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1864 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 1865 | return f2fs_ioc_release_volatile_write(filp); |
| 1866 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 1867 | return f2fs_ioc_abort_volatile_write(filp); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1868 | case F2FS_IOC_SHUTDOWN: |
| 1869 | return f2fs_ioc_shutdown(filp, arg); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1870 | case FITRIM: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1871 | return f2fs_ioc_fitrim(filp, arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1872 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 1873 | return f2fs_ioc_set_encryption_policy(filp, arg); |
| 1874 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 1875 | return f2fs_ioc_get_encryption_policy(filp, arg); |
| 1876 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 1877 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1878 | case F2FS_IOC_GARBAGE_COLLECT: |
| 1879 | return f2fs_ioc_gc(filp, arg); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1880 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 1881 | return f2fs_ioc_write_checkpoint(filp, arg); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 1882 | case F2FS_IOC_DEFRAGMENT: |
| 1883 | return f2fs_ioc_defragment(filp, arg); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1884 | default: |
| 1885 | return -ENOTTY; |
| 1886 | } |
| 1887 | } |
| 1888 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1889 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
| 1890 | { |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 1891 | struct file *file = iocb->ki_filp; |
| 1892 | struct inode *inode = file_inode(file); |
| 1893 | ssize_t ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1894 | |
| 1895 | if (f2fs_encrypted_inode(inode) && |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 1896 | !fscrypt_has_encryption_key(inode) && |
| 1897 | fscrypt_get_encryption_info(inode)) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1898 | return -EACCES; |
| 1899 | |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 1900 | inode_lock(inode); |
| 1901 | ret = generic_write_checks(iocb, from); |
| 1902 | if (ret > 0) { |
| 1903 | ret = f2fs_preallocate_blocks(iocb, from); |
| 1904 | if (!ret) |
| 1905 | ret = __generic_file_write_iter(iocb, from); |
| 1906 | } |
| 1907 | inode_unlock(inode); |
| 1908 | |
| 1909 | if (ret > 0) { |
| 1910 | ssize_t err; |
| 1911 | |
| 1912 | err = generic_write_sync(file, iocb->ki_pos - ret, ret); |
| 1913 | if (err < 0) |
| 1914 | ret = err; |
| 1915 | } |
| 1916 | return ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1917 | } |
| 1918 | |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 1919 | #ifdef CONFIG_COMPAT |
| 1920 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 1921 | { |
| 1922 | switch (cmd) { |
| 1923 | case F2FS_IOC32_GETFLAGS: |
| 1924 | cmd = F2FS_IOC_GETFLAGS; |
| 1925 | break; |
| 1926 | case F2FS_IOC32_SETFLAGS: |
| 1927 | cmd = F2FS_IOC_SETFLAGS; |
| 1928 | break; |
Chao Yu | 04ef4b6 | 2015-11-10 18:44:20 +0800 | [diff] [blame] | 1929 | case F2FS_IOC32_GETVERSION: |
| 1930 | cmd = F2FS_IOC_GETVERSION; |
| 1931 | break; |
| 1932 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 1933 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 1934 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 1935 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 1936 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 1937 | case F2FS_IOC_SHUTDOWN: |
| 1938 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 1939 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 1940 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 1941 | case F2FS_IOC_GARBAGE_COLLECT: |
| 1942 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 1943 | case F2FS_IOC_DEFRAGMENT: |
| 1944 | break; |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 1945 | default: |
| 1946 | return -ENOIOCTLCMD; |
| 1947 | } |
| 1948 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
| 1949 | } |
| 1950 | #endif |
| 1951 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1952 | const struct file_operations f2fs_file_operations = { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 1953 | .llseek = f2fs_llseek, |
Al Viro | aad4f8b | 2014-04-02 14:33:16 -0400 | [diff] [blame] | 1954 | .read_iter = generic_file_read_iter, |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1955 | .write_iter = f2fs_file_write_iter, |
| 1956 | .open = f2fs_file_open, |
Jaegeuk Kim | 1266223 | 2014-12-05 14:37:37 -0800 | [diff] [blame] | 1957 | .release = f2fs_release_file, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1958 | .mmap = f2fs_file_mmap, |
| 1959 | .fsync = f2fs_sync_file, |
| 1960 | .fallocate = f2fs_fallocate, |
| 1961 | .unlocked_ioctl = f2fs_ioctl, |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 1962 | #ifdef CONFIG_COMPAT |
| 1963 | .compat_ioctl = f2fs_compat_ioctl, |
| 1964 | #endif |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1965 | .splice_read = generic_file_splice_read, |
Al Viro | 8d02076 | 2014-04-05 04:27:08 -0400 | [diff] [blame] | 1966 | .splice_write = iter_file_splice_write, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1967 | }; |