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 | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 23 | #include <linux/uio.h> |
Andy Shevchenko | 8da4b8c | 2016-05-20 17:01:00 -0700 | [diff] [blame] | 24 | #include <linux/uuid.h> |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 25 | #include <linux/file.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 26 | |
| 27 | #include "f2fs.h" |
| 28 | #include "node.h" |
| 29 | #include "segment.h" |
| 30 | #include "xattr.h" |
| 31 | #include "acl.h" |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 32 | #include "gc.h" |
Jaegeuk Kim | db9f7c1 | 2014-12-17 20:04:08 -0800 | [diff] [blame] | 33 | #include "trace.h" |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 34 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 35 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 36 | static int f2fs_filemap_fault(struct vm_area_struct *vma, |
| 37 | struct vm_fault *vmf) |
| 38 | { |
| 39 | struct inode *inode = file_inode(vma->vm_file); |
| 40 | int err; |
| 41 | |
| 42 | down_read(&F2FS_I(inode)->i_mmap_sem); |
| 43 | err = filemap_fault(vma, vmf); |
| 44 | up_read(&F2FS_I(inode)->i_mmap_sem); |
| 45 | |
| 46 | return err; |
| 47 | } |
| 48 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 49 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, |
| 50 | struct vm_fault *vmf) |
| 51 | { |
| 52 | struct page *page = vmf->page; |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 53 | struct inode *inode = file_inode(vma->vm_file); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 54 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 55 | struct dnode_of_data dn; |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 56 | int err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 57 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 58 | sb_start_pagefault(inode->i_sb); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 59 | |
| 60 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); |
Jaegeuk Kim | b067ba1 | 2014-08-07 16:32:25 -0700 | [diff] [blame] | 61 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 62 | /* block allocation */ |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 63 | f2fs_lock_op(sbi); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 64 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | 9ba69cf | 2014-10-17 20:33:55 -0700 | [diff] [blame] | 65 | err = f2fs_reserve_block(&dn, page->index); |
| 66 | if (err) { |
| 67 | f2fs_unlock_op(sbi); |
| 68 | goto out; |
| 69 | } |
| 70 | f2fs_put_dnode(&dn); |
| 71 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 72 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 73 | f2fs_balance_fs(sbi, dn.node_changed); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 74 | |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 75 | file_update_time(vma->vm_file); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 76 | down_read(&F2FS_I(inode)->i_mmap_sem); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 77 | lock_page(page); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 78 | if (unlikely(page->mapping != inode->i_mapping || |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 79 | page_offset(page) > i_size_read(inode) || |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 80 | !PageUptodate(page))) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 81 | unlock_page(page); |
| 82 | err = -EFAULT; |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 83 | goto out_sem; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | /* |
| 87 | * check to see if the page is mapped already (no holes) |
| 88 | */ |
| 89 | if (PageMappedToDisk(page)) |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 90 | goto mapped; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 91 | |
| 92 | /* page is wholly or partially inside EOF */ |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 93 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 94 | i_size_read(inode)) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 95 | unsigned offset; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 96 | offset = i_size_read(inode) & ~PAGE_MASK; |
| 97 | zero_user_segment(page, offset, PAGE_SIZE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 98 | } |
| 99 | set_page_dirty(page); |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 100 | if (!PageUptodate(page)) |
| 101 | SetPageUptodate(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 102 | |
Jaegeuk Kim | e943a10 | 2013-10-25 14:26:31 +0900 | [diff] [blame] | 103 | trace_f2fs_vm_page_mkwrite(page, DATA); |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 104 | mapped: |
| 105 | /* fill the page */ |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 106 | f2fs_wait_on_page_writeback(page, DATA, false); |
Chao Yu | 08b39fb | 2015-10-08 13:27:34 +0800 | [diff] [blame] | 107 | |
| 108 | /* wait for GCed encrypted page writeback */ |
| 109 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) |
| 110 | f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr); |
| 111 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 112 | out_sem: |
| 113 | up_read(&F2FS_I(inode)->i_mmap_sem); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 114 | out: |
| 115 | sb_end_pagefault(inode->i_sb); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 116 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 117 | return block_page_mkwrite_return(err); |
| 118 | } |
| 119 | |
| 120 | static const struct vm_operations_struct f2fs_file_vm_ops = { |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 121 | .fault = f2fs_filemap_fault, |
Kirill A. Shutemov | f182036 | 2014-04-07 15:37:19 -0700 | [diff] [blame] | 122 | .map_pages = filemap_map_pages, |
Jaegeuk Kim | 692bb55 | 2013-01-17 18:37:41 +0900 | [diff] [blame] | 123 | .page_mkwrite = f2fs_vm_page_mkwrite, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 124 | }; |
| 125 | |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 126 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
| 127 | { |
| 128 | struct dentry *dentry; |
| 129 | |
| 130 | inode = igrab(inode); |
| 131 | dentry = d_find_any_alias(inode); |
| 132 | iput(inode); |
| 133 | if (!dentry) |
| 134 | return 0; |
| 135 | |
Jaegeuk Kim | f0947e5 | 2013-07-22 22:12:56 +0900 | [diff] [blame] | 136 | *pino = parent_ino(dentry); |
| 137 | dput(dentry); |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 138 | return 1; |
| 139 | } |
| 140 | |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 141 | static inline bool need_do_checkpoint(struct inode *inode) |
| 142 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 143 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 144 | bool need_cp = false; |
| 145 | |
| 146 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) |
| 147 | need_cp = true; |
Jaegeuk Kim | bbf156f | 2016-08-29 18:23:45 -0700 | [diff] [blame] | 148 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
Jaegeuk Kim | e7d5545 | 2015-04-29 17:02:18 -0700 | [diff] [blame] | 149 | need_cp = true; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 150 | else if (file_wrong_pino(inode)) |
| 151 | need_cp = true; |
| 152 | else if (!space_for_roll_forward(sbi)) |
| 153 | need_cp = true; |
| 154 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
| 155 | need_cp = true; |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 156 | else if (test_opt(sbi, FASTBOOT)) |
| 157 | need_cp = true; |
Jaegeuk Kim | a344b9f | 2014-11-05 20:05:53 -0800 | [diff] [blame] | 158 | else if (sbi->active_logs == 2) |
| 159 | need_cp = true; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 160 | |
| 161 | return need_cp; |
| 162 | } |
| 163 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 164 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
| 165 | { |
| 166 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); |
| 167 | bool ret = false; |
| 168 | /* But we need to avoid that there are some inode updates */ |
| 169 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) |
| 170 | ret = true; |
| 171 | f2fs_put_page(i, 0); |
| 172 | return ret; |
| 173 | } |
| 174 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 175 | static void try_to_fix_pino(struct inode *inode) |
| 176 | { |
| 177 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 178 | nid_t pino; |
| 179 | |
| 180 | down_write(&fi->i_sem); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 181 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
| 182 | get_parent_ino(inode, &pino)) { |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 183 | f2fs_i_pino_write(inode, pino); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 184 | file_got_pino(inode); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 185 | } |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 186 | up_write(&fi->i_sem); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 187 | } |
| 188 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 189 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
| 190 | int datasync, bool atomic) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 191 | { |
| 192 | struct inode *inode = file->f_mapping->host; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 193 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 194 | nid_t ino = inode->i_ino; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 195 | int ret = 0; |
| 196 | bool need_cp = false; |
| 197 | struct writeback_control wbc = { |
Jaegeuk Kim | c81bf1c | 2014-03-03 11:28:40 +0900 | [diff] [blame] | 198 | .sync_mode = WB_SYNC_ALL, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 199 | .nr_to_write = LONG_MAX, |
| 200 | .for_reclaim = 0, |
| 201 | }; |
| 202 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 203 | if (unlikely(f2fs_readonly(inode->i_sb))) |
Namjae Jeon | 1fa95b0 | 2012-12-01 10:56:01 +0900 | [diff] [blame] | 204 | return 0; |
| 205 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 206 | trace_f2fs_sync_file_enter(inode); |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 207 | |
| 208 | /* if fdatasync is triggered, let's do in-place-update */ |
Jaegeuk Kim | c46a155 | 2015-12-31 13:49:17 -0800 | [diff] [blame] | 209 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 210 | set_inode_flag(inode, FI_NEED_IPU); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 211 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 212 | clear_inode_flag(inode, FI_NEED_IPU); |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 213 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 214 | if (ret) { |
| 215 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 216 | return ret; |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 217 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 218 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 219 | /* if the inode is dirty, let's recover all the time */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 220 | if (!f2fs_skip_inode_update(inode, datasync)) { |
Jaegeuk Kim | 2286c02 | 2015-08-15 21:51:05 -0700 | [diff] [blame] | 221 | f2fs_write_inode(inode, NULL); |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 222 | goto go_write; |
| 223 | } |
| 224 | |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 225 | /* |
| 226 | * if there is no written data, don't waste time to write recovery info. |
| 227 | */ |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 228 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 229 | !exist_written_data(sbi, ino, APPEND_INO)) { |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 230 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 231 | /* it may call write_inode just prior to fsync */ |
| 232 | if (need_inode_page_update(sbi, ino)) |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 233 | goto go_write; |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 234 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 235 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 236 | exist_written_data(sbi, ino, UPDATE_INO)) |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 237 | goto flush_out; |
| 238 | goto out; |
| 239 | } |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 240 | go_write: |
Jaegeuk Kim | e5d2385 | 2013-07-03 10:55:52 +0900 | [diff] [blame] | 241 | /* |
| 242 | * Both of fdatasync() and fsync() are able to be recovered from |
| 243 | * sudden-power-off. |
| 244 | */ |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 245 | down_read(&F2FS_I(inode)->i_sem); |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 246 | need_cp = need_do_checkpoint(inode); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 247 | up_read(&F2FS_I(inode)->i_sem); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 248 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 249 | if (need_cp) { |
| 250 | /* all the dirty node pages should be flushed for POR */ |
| 251 | ret = f2fs_sync_fs(inode->i_sb, 1); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 252 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 253 | /* |
| 254 | * We've secured consistency through sync_fs. Following pino |
| 255 | * will be used only for fsynced inodes after checkpoint. |
| 256 | */ |
| 257 | try_to_fix_pino(inode); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 258 | clear_inode_flag(inode, FI_APPEND_WRITE); |
| 259 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 260 | goto out; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 261 | } |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 262 | sync_nodes: |
Jaegeuk Kim | 26de9b1 | 2016-05-20 20:42:37 -0700 | [diff] [blame] | 263 | ret = fsync_node_pages(sbi, inode, &wbc, atomic); |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 264 | if (ret) |
| 265 | goto out; |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 266 | |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 267 | /* if cp_error was enabled, we should avoid infinite loop */ |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 268 | if (unlikely(f2fs_cp_error(sbi))) { |
| 269 | ret = -EIO; |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 270 | goto out; |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 271 | } |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 272 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 273 | if (need_inode_block_update(sbi, ino)) { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 274 | f2fs_mark_inode_dirty_sync(inode, true); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 275 | f2fs_write_inode(inode, NULL); |
| 276 | goto sync_nodes; |
| 277 | } |
| 278 | |
| 279 | ret = wait_on_node_pages_writeback(sbi, ino); |
| 280 | if (ret) |
| 281 | goto out; |
| 282 | |
| 283 | /* once recovery info is written, don't need to tack this */ |
Chao Yu | a49324f | 2015-12-15 13:29:47 +0800 | [diff] [blame] | 284 | remove_ino_entry(sbi, ino, APPEND_INO); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 285 | clear_inode_flag(inode, FI_APPEND_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 286 | flush_out: |
Chao Yu | a49324f | 2015-12-15 13:29:47 +0800 | [diff] [blame] | 287 | remove_ino_entry(sbi, ino, UPDATE_INO); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 288 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 289 | if (!atomic) |
| 290 | ret = f2fs_issue_flush(sbi); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 291 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 292 | out: |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 293 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 294 | f2fs_trace_ios(NULL, 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 295 | return ret; |
| 296 | } |
| 297 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 298 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
| 299 | { |
| 300 | return f2fs_do_sync_file(file, start, end, datasync, false); |
| 301 | } |
| 302 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 303 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
| 304 | pgoff_t pgofs, int whence) |
| 305 | { |
| 306 | struct pagevec pvec; |
| 307 | int nr_pages; |
| 308 | |
| 309 | if (whence != SEEK_DATA) |
| 310 | return 0; |
| 311 | |
| 312 | /* find first dirty page index */ |
| 313 | pagevec_init(&pvec, 0); |
Jaegeuk Kim | 65b85cc | 2014-07-30 17:25:54 -0700 | [diff] [blame] | 314 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
| 315 | PAGECACHE_TAG_DIRTY, 1); |
Chao Yu | 80dd9c0 | 2016-02-24 17:20:44 +0800 | [diff] [blame] | 316 | pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 317 | pagevec_release(&pvec); |
| 318 | return pgofs; |
| 319 | } |
| 320 | |
| 321 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, |
| 322 | int whence) |
| 323 | { |
| 324 | switch (whence) { |
| 325 | case SEEK_DATA: |
| 326 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || |
| 327 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) |
| 328 | return true; |
| 329 | break; |
| 330 | case SEEK_HOLE: |
| 331 | if (blkaddr == NULL_ADDR) |
| 332 | return true; |
| 333 | break; |
| 334 | } |
| 335 | return false; |
| 336 | } |
| 337 | |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 338 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
| 339 | { |
| 340 | struct inode *inode = file->f_mapping->host; |
| 341 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 342 | struct dnode_of_data dn; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 343 | pgoff_t pgofs, end_offset, dirty; |
| 344 | loff_t data_ofs = offset; |
| 345 | loff_t isize; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 346 | int err = 0; |
| 347 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 348 | inode_lock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 349 | |
| 350 | isize = i_size_read(inode); |
| 351 | if (offset >= isize) |
| 352 | goto fail; |
| 353 | |
| 354 | /* handle inline data case */ |
Chao Yu | 622f28a | 2014-09-24 18:19:10 +0800 | [diff] [blame] | 355 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 356 | if (whence == SEEK_HOLE) |
| 357 | data_ofs = isize; |
| 358 | goto found; |
| 359 | } |
| 360 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 361 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 362 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 363 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
| 364 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 365 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 366 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | ac6f199 | 2016-06-16 17:03:23 -0700 | [diff] [blame] | 367 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 368 | if (err && err != -ENOENT) { |
| 369 | goto fail; |
| 370 | } else if (err == -ENOENT) { |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 371 | /* direct node does not exists */ |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 372 | if (whence == SEEK_DATA) { |
Chao Yu | 3cf4574 | 2016-01-26 15:40:44 +0800 | [diff] [blame] | 373 | pgofs = get_next_page_offset(&dn, pgofs); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 374 | continue; |
| 375 | } else { |
| 376 | goto found; |
| 377 | } |
| 378 | } |
| 379 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 380 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 381 | |
| 382 | /* find data/hole in dnode block */ |
| 383 | for (; dn.ofs_in_node < end_offset; |
| 384 | dn.ofs_in_node++, pgofs++, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 385 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 386 | block_t blkaddr; |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame^] | 387 | blkaddr = datablock_addr(dn.inode, |
| 388 | dn.node_page, dn.ofs_in_node); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 389 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 390 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 391 | f2fs_put_dnode(&dn); |
| 392 | goto found; |
| 393 | } |
| 394 | } |
| 395 | f2fs_put_dnode(&dn); |
| 396 | } |
| 397 | |
| 398 | if (whence == SEEK_DATA) |
| 399 | goto fail; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 400 | found: |
Jaegeuk Kim | fe369bc | 2014-04-28 17:02:48 +0900 | [diff] [blame] | 401 | if (whence == SEEK_HOLE && data_ofs > isize) |
| 402 | data_ofs = isize; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 403 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 404 | return vfs_setpos(file, data_ofs, maxbytes); |
| 405 | fail: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 406 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 407 | return -ENXIO; |
| 408 | } |
| 409 | |
| 410 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) |
| 411 | { |
| 412 | struct inode *inode = file->f_mapping->host; |
| 413 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 414 | |
| 415 | switch (whence) { |
| 416 | case SEEK_SET: |
| 417 | case SEEK_CUR: |
| 418 | case SEEK_END: |
| 419 | return generic_file_llseek_size(file, offset, whence, |
| 420 | maxbytes, i_size_read(inode)); |
| 421 | case SEEK_DATA: |
| 422 | case SEEK_HOLE: |
Jaegeuk Kim | 0b4c5afde | 2014-09-08 10:59:43 -0700 | [diff] [blame] | 423 | if (offset < 0) |
| 424 | return -ENXIO; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 425 | return f2fs_seek_block(file, offset, whence); |
| 426 | } |
| 427 | |
| 428 | return -EINVAL; |
| 429 | } |
| 430 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 431 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
| 432 | { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 433 | struct inode *inode = file_inode(file); |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 434 | int err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 435 | |
| 436 | /* we don't need to use inline_data strictly */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 437 | err = f2fs_convert_inline_inode(inode); |
| 438 | if (err) |
| 439 | return err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 440 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 441 | file_accessed(file); |
| 442 | vma->vm_ops = &f2fs_file_vm_ops; |
| 443 | return 0; |
| 444 | } |
| 445 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 446 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
| 447 | { |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 448 | struct dentry *dir; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 449 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 450 | if (f2fs_encrypted_inode(inode)) { |
| 451 | int ret = fscrypt_get_encryption_info(inode); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 452 | if (ret) |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 453 | return -EACCES; |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 454 | if (!fscrypt_has_encryption_key(inode)) |
Chao Yu | ae10866 | 2016-02-14 18:58:35 +0800 | [diff] [blame] | 455 | return -ENOKEY; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 456 | } |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 457 | dir = dget_parent(file_dentry(filp)); |
| 458 | if (f2fs_encrypted_inode(d_inode(dir)) && |
| 459 | !fscrypt_has_permitted_context(d_inode(dir), inode)) { |
| 460 | dput(dir); |
Jaegeuk Kim | 8074bb5 | 2016-02-23 09:21:37 -0800 | [diff] [blame] | 461 | return -EPERM; |
Jaegeuk Kim | 33b1395 | 2016-04-11 15:15:38 -0700 | [diff] [blame] | 462 | } |
| 463 | dput(dir); |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 464 | return dquot_file_open(inode, filp); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 465 | } |
| 466 | |
Jaegeuk Kim | b292dcab | 2013-05-22 08:02:02 +0900 | [diff] [blame] | 467 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 468 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 469 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 470 | struct f2fs_node *raw_node; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 471 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 472 | __le32 *addr; |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame^] | 473 | int base = 0; |
| 474 | |
| 475 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) |
| 476 | base = get_extra_isize(dn->inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 477 | |
Gu Zheng | 4559071 | 2013-07-15 17:57:38 +0800 | [diff] [blame] | 478 | raw_node = F2FS_NODE(dn->node_page); |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame^] | 479 | addr = blkaddr_in_node(raw_node) + base + ofs; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 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)) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 490 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 491 | nr_free++; |
| 492 | } |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 493 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 494 | if (nr_free) { |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 495 | pgoff_t fofs; |
| 496 | /* |
| 497 | * once we invalidate valid blkaddr in range [ofs, ofs + count], |
| 498 | * we will invalidate all blkaddr in the whole range. |
| 499 | */ |
| 500 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 501 | dn->inode) + ofs; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 502 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
Namjae Jeon | d7cc950 | 2013-06-08 21:25:40 +0900 | [diff] [blame] | 503 | dec_valid_block_count(sbi, dn->inode, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 504 | } |
| 505 | dn->ofs_in_node = ofs; |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 506 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 507 | f2fs_update_time(sbi, REQ_TIME); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 508 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
| 509 | dn->ofs_in_node, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 510 | return nr_free; |
| 511 | } |
| 512 | |
| 513 | void truncate_data_blocks(struct dnode_of_data *dn) |
| 514 | { |
| 515 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
| 516 | } |
| 517 | |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 518 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 519 | bool cache_only) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 520 | { |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 521 | unsigned offset = from & (PAGE_SIZE - 1); |
| 522 | pgoff_t index = from >> PAGE_SHIFT; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 523 | struct address_space *mapping = inode->i_mapping; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 524 | struct page *page; |
| 525 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 526 | if (!offset && !cache_only) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 527 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 528 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 529 | if (cache_only) { |
Jaegeuk Kim | 34b5d5c | 2016-09-06 15:55:54 -0700 | [diff] [blame] | 530 | page = find_lock_page(mapping, index); |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 531 | if (page && PageUptodate(page)) |
| 532 | goto truncate_out; |
| 533 | f2fs_put_page(page, 1); |
| 534 | return 0; |
| 535 | } |
| 536 | |
Jaegeuk Kim | a56c7c6 | 2015-10-09 15:11:38 -0700 | [diff] [blame] | 537 | page = get_lock_data_page(inode, index, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 538 | if (IS_ERR(page)) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 539 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 540 | truncate_out: |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 541 | f2fs_wait_on_page_writeback(page, DATA, true); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 542 | zero_user(page, offset, PAGE_SIZE - offset); |
Jaegeuk Kim | 231cb87 | 2017-06-14 08:05:32 -0700 | [diff] [blame] | 543 | |
| 544 | /* An encrypted inode should have a key and truncate the last page. */ |
| 545 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); |
| 546 | if (!cache_only) |
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)) { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 579 | truncate_inline_inode(inode, ipage, from); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 580 | f2fs_put_page(ipage, 1); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 581 | truncate_page = true; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 582 | goto out; |
| 583 | } |
| 584 | |
| 585 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
Jaegeuk Kim | 79344ef | 2016-05-06 16:19:43 -0700 | [diff] [blame] | 586 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 587 | if (err) { |
| 588 | if (err == -ENOENT) |
| 589 | goto free_next; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 590 | goto out; |
Jaegeuk Kim | 1ce86bf | 2014-10-15 10:24:34 -0700 | [diff] [blame] | 591 | } |
| 592 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 593 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 594 | |
| 595 | count -= dn.ofs_in_node; |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 596 | f2fs_bug_on(sbi, count < 0); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 597 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 598 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
| 599 | truncate_data_blocks_range(&dn, count); |
| 600 | free_from += count; |
| 601 | } |
| 602 | |
| 603 | f2fs_put_dnode(&dn); |
| 604 | free_next: |
| 605 | err = truncate_inode_blocks(inode, free_from); |
Jaegeuk Kim | 764d2c8 | 2014-11-11 11:01:01 -0800 | [diff] [blame] | 606 | out: |
| 607 | if (lock) |
| 608 | f2fs_unlock_op(sbi); |
Chao Yu | 09210c9 | 2016-05-05 19:13:03 +0800 | [diff] [blame] | 609 | free_partial: |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 610 | /* lastly zero out the first data page */ |
| 611 | if (!err) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 612 | err = truncate_partial_data_page(inode, from, truncate_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 613 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 614 | trace_f2fs_truncate_blocks_exit(inode, err); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 615 | return err; |
| 616 | } |
| 617 | |
Jaegeuk Kim | 9a449e9 | 2016-06-02 13:49:38 -0700 | [diff] [blame] | 618 | int f2fs_truncate(struct inode *inode) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 619 | { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 620 | int err; |
| 621 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 622 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 623 | S_ISLNK(inode->i_mode))) |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 624 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 625 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 626 | trace_f2fs_truncate(inode); |
| 627 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 628 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 629 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { |
| 630 | f2fs_show_injection_info(FAULT_TRUNCATE); |
| 631 | return -EIO; |
| 632 | } |
| 633 | #endif |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 634 | /* we should check inline_data size */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 635 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 636 | err = f2fs_convert_inline_inode(inode); |
| 637 | if (err) |
| 638 | return err; |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 639 | } |
| 640 | |
Jaegeuk Kim | 9a449e9 | 2016-06-02 13:49:38 -0700 | [diff] [blame] | 641 | err = truncate_blocks(inode, i_size_read(inode), true); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 642 | if (err) |
| 643 | return err; |
| 644 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 645 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 646 | f2fs_mark_inode_dirty_sync(inode, false); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 647 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 648 | } |
| 649 | |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 650 | int f2fs_getattr(struct vfsmount *mnt, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 651 | struct dentry *dentry, struct kstat *stat) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 652 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 653 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 654 | generic_fillattr(inode, stat); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 655 | return 0; |
| 656 | } |
| 657 | |
| 658 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 659 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) |
| 660 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 661 | unsigned int ia_valid = attr->ia_valid; |
| 662 | |
| 663 | if (ia_valid & ATTR_UID) |
| 664 | inode->i_uid = attr->ia_uid; |
| 665 | if (ia_valid & ATTR_GID) |
| 666 | inode->i_gid = attr->ia_gid; |
| 667 | if (ia_valid & ATTR_ATIME) |
| 668 | inode->i_atime = timespec_trunc(attr->ia_atime, |
| 669 | inode->i_sb->s_time_gran); |
| 670 | if (ia_valid & ATTR_MTIME) |
| 671 | inode->i_mtime = timespec_trunc(attr->ia_mtime, |
| 672 | inode->i_sb->s_time_gran); |
| 673 | if (ia_valid & ATTR_CTIME) |
| 674 | inode->i_ctime = timespec_trunc(attr->ia_ctime, |
| 675 | inode->i_sb->s_time_gran); |
| 676 | if (ia_valid & ATTR_MODE) { |
| 677 | umode_t mode = attr->ia_mode; |
| 678 | |
| 679 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) |
| 680 | mode &= ~S_ISGID; |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 681 | set_acl_inode(inode, mode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 682 | } |
| 683 | } |
| 684 | #else |
| 685 | #define __setattr_copy setattr_copy |
| 686 | #endif |
| 687 | |
| 688 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) |
| 689 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 690 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 691 | int err; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 692 | bool size_changed = false; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 693 | |
Jan Kara | 31051c8 | 2016-05-26 16:55:18 +0200 | [diff] [blame] | 694 | err = setattr_prepare(dentry, attr); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 695 | if (err) |
| 696 | return err; |
| 697 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 698 | if (is_quota_modification(inode, attr)) { |
| 699 | err = dquot_initialize(inode); |
| 700 | if (err) |
| 701 | return err; |
| 702 | } |
| 703 | if ((attr->ia_valid & ATTR_UID && |
| 704 | !uid_eq(attr->ia_uid, inode->i_uid)) || |
| 705 | (attr->ia_valid & ATTR_GID && |
| 706 | !gid_eq(attr->ia_gid, inode->i_gid))) { |
| 707 | err = dquot_transfer(inode, attr); |
| 708 | if (err) |
| 709 | return err; |
| 710 | } |
| 711 | |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 712 | if (attr->ia_valid & ATTR_SIZE) { |
Eric Biggers | d0a17d2 | 2017-06-13 16:47:54 -0700 | [diff] [blame] | 713 | if (f2fs_encrypted_inode(inode)) { |
| 714 | err = fscrypt_get_encryption_info(inode); |
| 715 | if (err) |
| 716 | return err; |
| 717 | if (!fscrypt_has_encryption_key(inode)) |
| 718 | return -ENOKEY; |
| 719 | } |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 720 | |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 721 | if (attr->ia_size <= i_size_read(inode)) { |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 722 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 723 | truncate_setsize(inode, attr->ia_size); |
Jaegeuk Kim | 9a449e9 | 2016-06-02 13:49:38 -0700 | [diff] [blame] | 724 | err = f2fs_truncate(inode); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 725 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 726 | if (err) |
| 727 | return err; |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 728 | } else { |
| 729 | /* |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 730 | * do not trim all blocks after i_size if target size is |
| 731 | * larger than i_size. |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 732 | */ |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 733 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 734 | truncate_setsize(inode, attr->ia_size); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 735 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 736 | |
| 737 | /* should convert inline inode here */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 738 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 739 | err = f2fs_convert_inline_inode(inode); |
| 740 | if (err) |
| 741 | return err; |
| 742 | } |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 743 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 744 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 745 | |
| 746 | size_changed = true; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 747 | } |
| 748 | |
| 749 | __setattr_copy(inode, attr); |
| 750 | |
| 751 | if (attr->ia_valid & ATTR_MODE) { |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 752 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 753 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
| 754 | inode->i_mode = F2FS_I(inode)->i_acl_mode; |
| 755 | clear_inode_flag(inode, FI_ACL_MODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 756 | } |
| 757 | } |
| 758 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 759 | /* file size may changed here */ |
| 760 | f2fs_mark_inode_dirty_sync(inode, size_changed); |
| 761 | |
| 762 | /* inode change will produce dirty node pages flushed by checkpoint */ |
| 763 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
| 764 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 765 | return err; |
| 766 | } |
| 767 | |
| 768 | const struct inode_operations f2fs_file_inode_operations = { |
| 769 | .getattr = f2fs_getattr, |
| 770 | .setattr = f2fs_setattr, |
| 771 | .get_acl = f2fs_get_acl, |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 772 | .set_acl = f2fs_set_acl, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 773 | #ifdef CONFIG_F2FS_FS_XATTR |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 774 | .listxattr = f2fs_listxattr, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 775 | #endif |
Jaegeuk Kim | 9ab7013 | 2014-06-08 04:30:14 +0900 | [diff] [blame] | 776 | .fiemap = f2fs_fiemap, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 777 | }; |
| 778 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 779 | static int fill_zero(struct inode *inode, pgoff_t index, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 780 | loff_t start, loff_t len) |
| 781 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 782 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 783 | struct page *page; |
| 784 | |
| 785 | if (!len) |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 786 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 787 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 788 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | bd43df0 | 2013-01-25 18:33:41 +0900 | [diff] [blame] | 789 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 790 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 64aa7ed | 2013-05-20 09:55:50 +0900 | [diff] [blame] | 791 | page = get_new_data_page(inode, NULL, index, false); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 792 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 793 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 794 | if (IS_ERR(page)) |
| 795 | return PTR_ERR(page); |
| 796 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 797 | f2fs_wait_on_page_writeback(page, DATA, true); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 798 | zero_user(page, start, len); |
| 799 | set_page_dirty(page); |
| 800 | f2fs_put_page(page, 1); |
| 801 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
| 805 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 806 | int err; |
| 807 | |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 808 | while (pg_start < pg_end) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 809 | struct dnode_of_data dn; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 810 | pgoff_t end_offset, count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 811 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 812 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 813 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 814 | if (err) { |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 815 | if (err == -ENOENT) { |
| 816 | pg_start++; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 817 | continue; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 818 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 819 | return err; |
| 820 | } |
| 821 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 822 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 823 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
| 824 | |
| 825 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); |
| 826 | |
| 827 | truncate_data_blocks_range(&dn, count); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 828 | f2fs_put_dnode(&dn); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 829 | |
| 830 | pg_start += count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 831 | } |
| 832 | return 0; |
| 833 | } |
| 834 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 835 | 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] | 836 | { |
| 837 | pgoff_t pg_start, pg_end; |
| 838 | loff_t off_start, off_end; |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 839 | int ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 840 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 841 | ret = f2fs_convert_inline_inode(inode); |
| 842 | if (ret) |
| 843 | return ret; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 844 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 845 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 846 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
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 | off_start = offset & (PAGE_SIZE - 1); |
| 849 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 850 | |
| 851 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 852 | ret = fill_zero(inode, pg_start, off_start, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 853 | off_end - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 854 | if (ret) |
| 855 | return ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 856 | } else { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 857 | if (off_start) { |
| 858 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 859 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 860 | if (ret) |
| 861 | return ret; |
| 862 | } |
| 863 | if (off_end) { |
| 864 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 865 | if (ret) |
| 866 | return ret; |
| 867 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 868 | |
| 869 | if (pg_start < pg_end) { |
| 870 | struct address_space *mapping = inode->i_mapping; |
| 871 | loff_t blk_start, blk_end; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 872 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jason Hrycay | 1127a3d | 2013-04-08 20:16:44 -0500 | [diff] [blame] | 873 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 874 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 875 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 876 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
| 877 | blk_end = (loff_t)pg_end << PAGE_SHIFT; |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 878 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 879 | truncate_inode_pages_range(mapping, blk_start, |
| 880 | blk_end - 1); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 881 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 882 | f2fs_lock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 883 | ret = truncate_hole(inode, pg_start, pg_end); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 884 | f2fs_unlock_op(sbi); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 885 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 886 | } |
| 887 | } |
| 888 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 889 | return ret; |
| 890 | } |
| 891 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 892 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
| 893 | int *do_replace, pgoff_t off, pgoff_t len) |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 894 | { |
| 895 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 896 | struct dnode_of_data dn; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 897 | int ret, done, i; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 898 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 899 | next_dnode: |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 900 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 901 | ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 902 | if (ret && ret != -ENOENT) { |
| 903 | return ret; |
| 904 | } else if (ret == -ENOENT) { |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 905 | if (dn.max_level == 0) |
| 906 | return -ENOENT; |
| 907 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); |
| 908 | blkaddr += done; |
| 909 | do_replace += done; |
| 910 | goto next; |
| 911 | } |
| 912 | |
| 913 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - |
| 914 | dn.ofs_in_node, len); |
| 915 | for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame^] | 916 | *blkaddr = datablock_addr(dn.inode, |
| 917 | dn.node_page, dn.ofs_in_node); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 918 | if (!is_checkpointed_data(sbi, *blkaddr)) { |
| 919 | |
| 920 | if (test_opt(sbi, LFS)) { |
| 921 | f2fs_put_dnode(&dn); |
| 922 | return -ENOTSUPP; |
| 923 | } |
| 924 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 925 | /* do not invalidate this block address */ |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 926 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 927 | *do_replace = 1; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 928 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 929 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 930 | f2fs_put_dnode(&dn); |
| 931 | next: |
| 932 | len -= done; |
| 933 | off += done; |
| 934 | if (len) |
| 935 | goto next_dnode; |
| 936 | return 0; |
| 937 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 938 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 939 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
| 940 | int *do_replace, pgoff_t off, int len) |
| 941 | { |
| 942 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 943 | struct dnode_of_data dn; |
| 944 | int ret, i; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 945 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 946 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
| 947 | if (*do_replace == 0) |
| 948 | continue; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 949 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 950 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 951 | ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); |
| 952 | if (ret) { |
| 953 | dec_valid_block_count(sbi, inode, 1); |
| 954 | invalidate_blocks(sbi, *blkaddr); |
| 955 | } else { |
| 956 | f2fs_update_data_blkaddr(&dn, *blkaddr); |
Jaegeuk Kim | 36abef4 | 2016-06-03 19:29:38 -0700 | [diff] [blame] | 957 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 958 | f2fs_put_dnode(&dn); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 959 | } |
| 960 | return 0; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 961 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 962 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 963 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, |
| 964 | block_t *blkaddr, int *do_replace, |
| 965 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) |
| 966 | { |
| 967 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); |
| 968 | pgoff_t i = 0; |
| 969 | int ret; |
| 970 | |
| 971 | while (i < len) { |
| 972 | if (blkaddr[i] == NULL_ADDR && !full) { |
| 973 | i++; |
| 974 | continue; |
| 975 | } |
| 976 | |
| 977 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
| 978 | struct dnode_of_data dn; |
| 979 | struct node_info ni; |
| 980 | size_t new_size; |
| 981 | pgoff_t ilen; |
| 982 | |
| 983 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
| 984 | ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); |
| 985 | if (ret) |
| 986 | return ret; |
| 987 | |
| 988 | get_node_info(sbi, dn.nid, &ni); |
| 989 | ilen = min((pgoff_t) |
| 990 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - |
| 991 | dn.ofs_in_node, len - i); |
| 992 | do { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame^] | 993 | dn.data_blkaddr = datablock_addr(dn.inode, |
| 994 | dn.node_page, dn.ofs_in_node); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 995 | truncate_data_blocks_range(&dn, 1); |
| 996 | |
| 997 | if (do_replace[i]) { |
| 998 | f2fs_i_blocks_write(src_inode, |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 999 | 1, false, false); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1000 | f2fs_i_blocks_write(dst_inode, |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1001 | 1, true, false); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1002 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
| 1003 | blkaddr[i], ni.version, true, false); |
| 1004 | |
| 1005 | do_replace[i] = 0; |
| 1006 | } |
| 1007 | dn.ofs_in_node++; |
| 1008 | i++; |
| 1009 | new_size = (dst + i) << PAGE_SHIFT; |
| 1010 | if (dst_inode->i_size < new_size) |
| 1011 | f2fs_i_size_write(dst_inode, new_size); |
Jaegeuk Kim | 027611e | 2016-11-23 10:51:17 -0800 | [diff] [blame] | 1012 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1013 | |
| 1014 | f2fs_put_dnode(&dn); |
| 1015 | } else { |
| 1016 | struct page *psrc, *pdst; |
| 1017 | |
| 1018 | psrc = get_lock_data_page(src_inode, src + i, true); |
| 1019 | if (IS_ERR(psrc)) |
| 1020 | return PTR_ERR(psrc); |
| 1021 | pdst = get_new_data_page(dst_inode, NULL, dst + i, |
| 1022 | true); |
| 1023 | if (IS_ERR(pdst)) { |
| 1024 | f2fs_put_page(psrc, 1); |
| 1025 | return PTR_ERR(pdst); |
| 1026 | } |
| 1027 | f2fs_copy_page(psrc, pdst); |
| 1028 | set_page_dirty(pdst); |
| 1029 | f2fs_put_page(pdst, 1); |
| 1030 | f2fs_put_page(psrc, 1); |
| 1031 | |
| 1032 | ret = truncate_hole(src_inode, src + i, src + i + 1); |
| 1033 | if (ret) |
| 1034 | return ret; |
| 1035 | i++; |
| 1036 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1037 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1038 | return 0; |
| 1039 | } |
| 1040 | |
| 1041 | static int __exchange_data_block(struct inode *src_inode, |
| 1042 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1043 | pgoff_t len, bool full) |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1044 | { |
| 1045 | block_t *src_blkaddr; |
| 1046 | int *do_replace; |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1047 | pgoff_t olen; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1048 | int ret; |
| 1049 | |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1050 | while (len) { |
| 1051 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1052 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1053 | src_blkaddr = kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1054 | if (!src_blkaddr) |
| 1055 | return -ENOMEM; |
| 1056 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1057 | do_replace = kvzalloc(sizeof(int) * olen, GFP_KERNEL); |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1058 | if (!do_replace) { |
| 1059 | kvfree(src_blkaddr); |
| 1060 | return -ENOMEM; |
| 1061 | } |
| 1062 | |
| 1063 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
| 1064 | do_replace, src, olen); |
| 1065 | if (ret) |
| 1066 | goto roll_back; |
| 1067 | |
| 1068 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
| 1069 | do_replace, src, dst, olen, full); |
| 1070 | if (ret) |
| 1071 | goto roll_back; |
| 1072 | |
| 1073 | src += olen; |
| 1074 | dst += olen; |
| 1075 | len -= olen; |
| 1076 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1077 | kvfree(src_blkaddr); |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1078 | kvfree(do_replace); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1079 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1080 | return 0; |
| 1081 | |
| 1082 | roll_back: |
| 1083 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); |
| 1084 | kvfree(src_blkaddr); |
| 1085 | kvfree(do_replace); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1086 | return ret; |
| 1087 | } |
| 1088 | |
| 1089 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
| 1090 | { |
| 1091 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1092 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1093 | int ret; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1094 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1095 | f2fs_balance_fs(sbi, true); |
| 1096 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 5f281fa | 2016-07-12 11:07:52 -0700 | [diff] [blame] | 1097 | |
| 1098 | f2fs_drop_extent_tree(inode); |
| 1099 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1100 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
| 1101 | f2fs_unlock_op(sbi); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1102 | return ret; |
| 1103 | } |
| 1104 | |
| 1105 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) |
| 1106 | { |
| 1107 | pgoff_t pg_start, pg_end; |
| 1108 | loff_t new_size; |
| 1109 | int ret; |
| 1110 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1111 | if (offset + len >= i_size_read(inode)) |
| 1112 | return -EINVAL; |
| 1113 | |
| 1114 | /* collapse 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 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1122 | pg_start = offset >> PAGE_SHIFT; |
| 1123 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1124 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1125 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1126 | /* write out all dirty pages from offset */ |
| 1127 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1128 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1129 | goto out; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1130 | |
| 1131 | truncate_pagecache(inode, offset); |
| 1132 | |
| 1133 | ret = f2fs_do_collapse(inode, pg_start, pg_end); |
| 1134 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1135 | goto out; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1136 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1137 | /* write out all moved pages, if possible */ |
| 1138 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1139 | truncate_pagecache(inode, offset); |
| 1140 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1141 | new_size = i_size_read(inode) - len; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1142 | truncate_pagecache(inode, new_size); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1143 | |
| 1144 | ret = truncate_blocks(inode, new_size, true); |
| 1145 | if (!ret) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1146 | f2fs_i_size_write(inode, new_size); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1147 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1148 | out: |
| 1149 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1150 | return ret; |
| 1151 | } |
| 1152 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1153 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
| 1154 | pgoff_t end) |
| 1155 | { |
| 1156 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
| 1157 | pgoff_t index = start; |
| 1158 | unsigned int ofs_in_node = dn->ofs_in_node; |
| 1159 | blkcnt_t count = 0; |
| 1160 | int ret; |
| 1161 | |
| 1162 | for (; index < end; index++, dn->ofs_in_node++) { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame^] | 1163 | if (datablock_addr(dn->inode, dn->node_page, |
| 1164 | dn->ofs_in_node) == NULL_ADDR) |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1165 | count++; |
| 1166 | } |
| 1167 | |
| 1168 | dn->ofs_in_node = ofs_in_node; |
| 1169 | ret = reserve_new_blocks(dn, count); |
| 1170 | if (ret) |
| 1171 | return ret; |
| 1172 | |
| 1173 | dn->ofs_in_node = ofs_in_node; |
| 1174 | for (index = start; index < end; index++, dn->ofs_in_node++) { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame^] | 1175 | dn->data_blkaddr = datablock_addr(dn->inode, |
| 1176 | dn->node_page, dn->ofs_in_node); |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1177 | /* |
| 1178 | * reserve_new_blocks will not guarantee entire block |
| 1179 | * allocation. |
| 1180 | */ |
| 1181 | if (dn->data_blkaddr == NULL_ADDR) { |
| 1182 | ret = -ENOSPC; |
| 1183 | break; |
| 1184 | } |
| 1185 | if (dn->data_blkaddr != NEW_ADDR) { |
| 1186 | invalidate_blocks(sbi, dn->data_blkaddr); |
| 1187 | dn->data_blkaddr = NEW_ADDR; |
| 1188 | set_data_blkaddr(dn); |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | f2fs_update_extent_cache_range(dn, start, 0, index - start); |
| 1193 | |
| 1194 | return ret; |
| 1195 | } |
| 1196 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1197 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
| 1198 | int mode) |
| 1199 | { |
| 1200 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1201 | struct address_space *mapping = inode->i_mapping; |
| 1202 | pgoff_t index, pg_start, pg_end; |
| 1203 | loff_t new_size = i_size_read(inode); |
| 1204 | loff_t off_start, off_end; |
| 1205 | int ret = 0; |
| 1206 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1207 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1208 | if (ret) |
| 1209 | return ret; |
| 1210 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1211 | ret = f2fs_convert_inline_inode(inode); |
| 1212 | if (ret) |
| 1213 | return ret; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1214 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1215 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1216 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
| 1217 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1218 | goto out_sem; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1219 | |
| 1220 | truncate_pagecache_range(inode, offset, offset + len - 1); |
| 1221 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1222 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 1223 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1224 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1225 | off_start = offset & (PAGE_SIZE - 1); |
| 1226 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1227 | |
| 1228 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1229 | ret = fill_zero(inode, pg_start, off_start, |
| 1230 | off_end - off_start); |
| 1231 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1232 | goto out_sem; |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1233 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1234 | new_size = max_t(loff_t, new_size, offset + len); |
| 1235 | } else { |
| 1236 | if (off_start) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1237 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1238 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1239 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1240 | goto out_sem; |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1241 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1242 | new_size = max_t(loff_t, new_size, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1243 | (loff_t)pg_start << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1244 | } |
| 1245 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1246 | for (index = pg_start; index < pg_end;) { |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1247 | struct dnode_of_data dn; |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1248 | unsigned int end_offset; |
| 1249 | pgoff_t end; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1250 | |
| 1251 | f2fs_lock_op(sbi); |
| 1252 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1253 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 1254 | ret = get_dnode_of_data(&dn, index, ALLOC_NODE); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1255 | if (ret) { |
| 1256 | f2fs_unlock_op(sbi); |
| 1257 | goto out; |
| 1258 | } |
| 1259 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1260 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
| 1261 | end = min(pg_end, end_offset - dn.ofs_in_node + index); |
| 1262 | |
| 1263 | ret = f2fs_do_zero_range(&dn, index, end); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1264 | f2fs_put_dnode(&dn); |
| 1265 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1266 | |
| 1267 | f2fs_balance_fs(sbi, dn.node_changed); |
| 1268 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1269 | if (ret) |
| 1270 | goto out; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1271 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1272 | index = end; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1273 | new_size = max_t(loff_t, new_size, |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1274 | (loff_t)index << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1275 | } |
| 1276 | |
| 1277 | if (off_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1278 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 1279 | if (ret) |
| 1280 | goto out; |
| 1281 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1282 | new_size = max_t(loff_t, new_size, offset + len); |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | out: |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 1287 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1288 | f2fs_i_size_write(inode, new_size); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1289 | out_sem: |
| 1290 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1291 | |
| 1292 | return ret; |
| 1293 | } |
| 1294 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1295 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
| 1296 | { |
| 1297 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1298 | pgoff_t nr, pg_start, pg_end, delta, idx; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1299 | loff_t new_size; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1300 | int ret = 0; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1301 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1302 | new_size = i_size_read(inode) + len; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1303 | ret = inode_newsize_ok(inode, new_size); |
| 1304 | if (ret) |
| 1305 | return ret; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1306 | |
| 1307 | if (offset >= i_size_read(inode)) |
| 1308 | return -EINVAL; |
| 1309 | |
| 1310 | /* insert range should be aligned to block size of f2fs. */ |
| 1311 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 1312 | return -EINVAL; |
| 1313 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1314 | ret = f2fs_convert_inline_inode(inode); |
| 1315 | if (ret) |
| 1316 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 1317 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1318 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1319 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1320 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1321 | ret = truncate_blocks(inode, i_size_read(inode), true); |
| 1322 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1323 | goto out; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1324 | |
| 1325 | /* write out all dirty pages from offset */ |
| 1326 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1327 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1328 | goto out; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1329 | |
| 1330 | truncate_pagecache(inode, offset); |
| 1331 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1332 | pg_start = offset >> PAGE_SHIFT; |
| 1333 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1334 | delta = pg_end - pg_start; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1335 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1336 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1337 | while (!ret && idx > pg_start) { |
| 1338 | nr = idx - pg_start; |
| 1339 | if (nr > delta) |
| 1340 | nr = delta; |
| 1341 | idx -= nr; |
| 1342 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1343 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 5f281fa | 2016-07-12 11:07:52 -0700 | [diff] [blame] | 1344 | f2fs_drop_extent_tree(inode); |
| 1345 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1346 | ret = __exchange_data_block(inode, inode, idx, |
| 1347 | idx + delta, nr, false); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1348 | f2fs_unlock_op(sbi); |
| 1349 | } |
| 1350 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1351 | /* write out all moved pages, if possible */ |
| 1352 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1353 | truncate_pagecache(inode, offset); |
| 1354 | |
| 1355 | if (!ret) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1356 | f2fs_i_size_write(inode, new_size); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1357 | out: |
| 1358 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1359 | return ret; |
| 1360 | } |
| 1361 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1362 | static int expand_inode_data(struct inode *inode, loff_t offset, |
| 1363 | loff_t len, int mode) |
| 1364 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1365 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1366 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
| 1367 | pgoff_t pg_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1368 | loff_t new_size = i_size_read(inode); |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1369 | loff_t off_end; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1370 | int err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1371 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1372 | err = inode_newsize_ok(inode, (len + offset)); |
| 1373 | if (err) |
| 1374 | return err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1375 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1376 | err = f2fs_convert_inline_inode(inode); |
| 1377 | if (err) |
| 1378 | return err; |
Jaegeuk Kim | 9e09fc8 | 2013-12-27 12:28:59 +0900 | [diff] [blame] | 1379 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1380 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1381 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1382 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1383 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1384 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1385 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
| 1386 | map.m_len = pg_end - map.m_lblk; |
| 1387 | if (off_end) |
| 1388 | map.m_len++; |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1389 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1390 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
| 1391 | if (err) { |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1392 | pgoff_t last_off; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1393 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1394 | if (!map.m_len) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1395 | return err; |
Jaegeuk Kim | 98397ff | 2014-06-13 13:07:31 +0900 | [diff] [blame] | 1396 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1397 | last_off = map.m_lblk + map.m_len - 1; |
| 1398 | |
| 1399 | /* update new size to the failed position */ |
| 1400 | new_size = (last_off == pg_end) ? offset + len: |
| 1401 | (loff_t)(last_off + 1) << PAGE_SHIFT; |
| 1402 | } else { |
| 1403 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1404 | } |
| 1405 | |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 1406 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1407 | f2fs_i_size_write(inode, new_size); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1408 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1409 | return err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1410 | } |
| 1411 | |
| 1412 | static long f2fs_fallocate(struct file *file, int mode, |
| 1413 | loff_t offset, loff_t len) |
| 1414 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1415 | struct inode *inode = file_inode(file); |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1416 | long ret = 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1417 | |
Chao Yu | c998012 | 2015-09-11 14:39:02 +0800 | [diff] [blame] | 1418 | /* f2fs only support ->fallocate for regular file */ |
| 1419 | if (!S_ISREG(inode->i_mode)) |
| 1420 | return -EINVAL; |
| 1421 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1422 | if (f2fs_encrypted_inode(inode) && |
| 1423 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1424 | return -EOPNOTSUPP; |
| 1425 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1426 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1427 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
| 1428 | FALLOC_FL_INSERT_RANGE)) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1429 | return -EOPNOTSUPP; |
| 1430 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1431 | inode_lock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1432 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1433 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
| 1434 | if (offset >= inode->i_size) |
| 1435 | goto out; |
| 1436 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 1437 | ret = punch_hole(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1438 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
| 1439 | ret = f2fs_collapse_range(inode, offset, len); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1440 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
| 1441 | ret = f2fs_zero_range(inode, offset, len, mode); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1442 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
| 1443 | ret = f2fs_insert_range(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1444 | } else { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1445 | ret = expand_inode_data(inode, offset, len, mode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1446 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1447 | |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1448 | if (!ret) { |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 1449 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1450 | f2fs_mark_inode_dirty_sync(inode, false); |
| 1451 | if (mode & FALLOC_FL_KEEP_SIZE) |
| 1452 | file_set_keep_isize(inode); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1453 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1454 | } |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1455 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1456 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1457 | inode_unlock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1458 | |
Namjae Jeon | c01e285 | 2013-04-23 17:00:52 +0900 | [diff] [blame] | 1459 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1460 | return ret; |
| 1461 | } |
| 1462 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1463 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
| 1464 | { |
Jaegeuk Kim | de5307e | 2016-04-11 11:51:51 -0700 | [diff] [blame] | 1465 | /* |
| 1466 | * f2fs_relase_file is called at every close calls. So we should |
| 1467 | * not drop any inmemory pages by close called by other process. |
| 1468 | */ |
| 1469 | if (!(filp->f_mode & FMODE_WRITE) || |
| 1470 | atomic_read(&inode->i_writecount) != 1) |
| 1471 | return 0; |
| 1472 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1473 | /* some remained atomic pages should discarded */ |
| 1474 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1475 | drop_inmem_pages(inode); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1476 | if (f2fs_is_volatile_file(inode)) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1477 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1478 | stat_dec_volatile_write(inode); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1479 | set_inode_flag(inode, FI_DROP_CACHE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1480 | filemap_fdatawrite(inode->i_mapping); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1481 | clear_inode_flag(inode, FI_DROP_CACHE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1482 | } |
| 1483 | return 0; |
| 1484 | } |
| 1485 | |
Jaegeuk Kim | a778c4c | 2017-07-24 19:46:29 -0700 | [diff] [blame] | 1486 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
| 1487 | { |
| 1488 | struct inode *inode = file_inode(file); |
| 1489 | |
| 1490 | /* |
| 1491 | * If the process doing a transaction is crashed, we should do |
| 1492 | * roll-back. Otherwise, other reader/write can see corrupted database |
| 1493 | * until all the writers close its file. Since this should be done |
| 1494 | * before dropping file lock, it needs to do in ->flush. |
| 1495 | */ |
| 1496 | if (f2fs_is_atomic_file(inode) && |
| 1497 | F2FS_I(inode)->inmem_task == current) |
| 1498 | drop_inmem_pages(inode); |
| 1499 | return 0; |
| 1500 | } |
| 1501 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1502 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
| 1503 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) |
| 1504 | |
| 1505 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) |
| 1506 | { |
| 1507 | if (S_ISDIR(mode)) |
| 1508 | return flags; |
| 1509 | else if (S_ISREG(mode)) |
| 1510 | return flags & F2FS_REG_FLMASK; |
| 1511 | else |
| 1512 | return flags & F2FS_OTHER_FLMASK; |
| 1513 | } |
| 1514 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1515 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1516 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1517 | struct inode *inode = file_inode(filp); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1518 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1519 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
| 1520 | return put_user(flags, (int __user *)arg); |
| 1521 | } |
| 1522 | |
| 1523 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
| 1524 | { |
| 1525 | struct inode *inode = file_inode(filp); |
| 1526 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Sheng Yong | 6949422 | 2016-08-23 20:10:47 +0800 | [diff] [blame] | 1527 | unsigned int flags; |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1528 | unsigned int oldflags; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1529 | int ret; |
| 1530 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1531 | if (!inode_owner_or_capable(inode)) |
| 1532 | return -EACCES; |
| 1533 | |
| 1534 | if (get_user(flags, (int __user *)arg)) |
| 1535 | return -EFAULT; |
| 1536 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1537 | ret = mnt_want_write_file(filp); |
| 1538 | if (ret) |
| 1539 | return ret; |
| 1540 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1541 | inode_lock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1542 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1543 | /* Is it quota file? Do not allow user to mess with it */ |
| 1544 | if (IS_NOQUOTA(inode)) { |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1545 | ret = -EPERM; |
| 1546 | goto unlock_out; |
| 1547 | } |
| 1548 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1549 | flags = f2fs_mask_flags(inode->i_mode, flags); |
| 1550 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1551 | oldflags = fi->i_flags; |
| 1552 | |
| 1553 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
| 1554 | if (!capable(CAP_LINUX_IMMUTABLE)) { |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1555 | ret = -EPERM; |
Luis Henriques | 1a3bf340 | 2017-07-11 17:30:33 +0100 | [diff] [blame] | 1556 | goto unlock_out; |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1557 | } |
| 1558 | } |
| 1559 | |
| 1560 | flags = flags & FS_FL_USER_MODIFIABLE; |
| 1561 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; |
| 1562 | fi->i_flags = flags; |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1563 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 1564 | inode->i_ctime = current_time(inode); |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 1565 | f2fs_set_inode_flags(inode); |
Jaegeuk Kim | f31e1ae | 2017-05-16 13:20:16 -0700 | [diff] [blame] | 1566 | f2fs_mark_inode_dirty_sync(inode, false); |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1567 | unlock_out: |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1568 | inode_unlock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1569 | mnt_drop_write_file(filp); |
| 1570 | return ret; |
| 1571 | } |
| 1572 | |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1573 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
| 1574 | { |
| 1575 | struct inode *inode = file_inode(filp); |
| 1576 | |
| 1577 | return put_user(inode->i_generation, (int __user *)arg); |
| 1578 | } |
| 1579 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1580 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
| 1581 | { |
| 1582 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1583 | int ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1584 | |
| 1585 | if (!inode_owner_or_capable(inode)) |
| 1586 | return -EACCES; |
| 1587 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1588 | if (!S_ISREG(inode->i_mode)) |
| 1589 | return -EINVAL; |
| 1590 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1591 | ret = mnt_want_write_file(filp); |
| 1592 | if (ret) |
| 1593 | return ret; |
| 1594 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1595 | inode_lock(inode); |
| 1596 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1597 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1598 | goto out; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1599 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1600 | ret = f2fs_convert_inline_inode(inode); |
| 1601 | if (ret) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1602 | goto out; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1603 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1604 | set_inode_flag(inode, FI_ATOMIC_FILE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1605 | set_inode_flag(inode, FI_HOT_DATA); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1606 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
| 1607 | |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1608 | if (!get_dirty_pages(inode)) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1609 | goto inc_stat; |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1610 | |
| 1611 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, |
Jaegeuk Kim | a43e1c4 | 2016-12-02 15:11:32 -0800 | [diff] [blame] | 1612 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1613 | inode->i_ino, get_dirty_pages(inode)); |
| 1614 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1615 | if (ret) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1616 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1617 | goto out; |
| 1618 | } |
| 1619 | |
| 1620 | inc_stat: |
Jaegeuk Kim | a778c4c | 2017-07-24 19:46:29 -0700 | [diff] [blame] | 1621 | F2FS_I(inode)->inmem_task = current; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1622 | stat_inc_atomic_write(inode); |
| 1623 | stat_update_max_atomic_write(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1624 | out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1625 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1626 | mnt_drop_write_file(filp); |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1627 | return ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1628 | } |
| 1629 | |
| 1630 | static int f2fs_ioc_commit_atomic_write(struct file *filp) |
| 1631 | { |
| 1632 | struct inode *inode = file_inode(filp); |
| 1633 | int ret; |
| 1634 | |
| 1635 | if (!inode_owner_or_capable(inode)) |
| 1636 | return -EACCES; |
| 1637 | |
| 1638 | ret = mnt_want_write_file(filp); |
| 1639 | if (ret) |
| 1640 | return ret; |
| 1641 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1642 | inode_lock(inode); |
| 1643 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1644 | if (f2fs_is_volatile_file(inode)) |
| 1645 | goto err_out; |
| 1646 | |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1647 | if (f2fs_is_atomic_file(inode)) { |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1648 | ret = commit_inmem_pages(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1649 | if (ret) |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1650 | goto err_out; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1651 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1652 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
| 1653 | if (!ret) { |
| 1654 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
| 1655 | stat_dec_atomic_write(inode); |
| 1656 | } |
| 1657 | } else { |
| 1658 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
| 1659 | } |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1660 | err_out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1661 | inode_unlock(inode); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1662 | mnt_drop_write_file(filp); |
| 1663 | return ret; |
| 1664 | } |
| 1665 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1666 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
| 1667 | { |
| 1668 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1669 | int ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1670 | |
| 1671 | if (!inode_owner_or_capable(inode)) |
| 1672 | return -EACCES; |
| 1673 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1674 | if (!S_ISREG(inode->i_mode)) |
| 1675 | return -EINVAL; |
| 1676 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1677 | ret = mnt_want_write_file(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1678 | if (ret) |
| 1679 | return ret; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 1680 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1681 | inode_lock(inode); |
| 1682 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1683 | if (f2fs_is_volatile_file(inode)) |
| 1684 | goto out; |
| 1685 | |
| 1686 | ret = f2fs_convert_inline_inode(inode); |
| 1687 | if (ret) |
| 1688 | goto out; |
| 1689 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1690 | stat_inc_volatile_write(inode); |
| 1691 | stat_update_max_volatile_write(inode); |
| 1692 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1693 | set_inode_flag(inode, FI_VOLATILE_FILE); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1694 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1695 | out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1696 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1697 | mnt_drop_write_file(filp); |
| 1698 | return ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1699 | } |
| 1700 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1701 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
| 1702 | { |
| 1703 | struct inode *inode = file_inode(filp); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1704 | int ret; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1705 | |
| 1706 | if (!inode_owner_or_capable(inode)) |
| 1707 | return -EACCES; |
| 1708 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1709 | ret = mnt_want_write_file(filp); |
| 1710 | if (ret) |
| 1711 | return ret; |
| 1712 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1713 | inode_lock(inode); |
| 1714 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1715 | if (!f2fs_is_volatile_file(inode)) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1716 | goto out; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1717 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1718 | if (!f2fs_is_first_block_written(inode)) { |
| 1719 | ret = truncate_partial_data_page(inode, 0, true); |
| 1720 | goto out; |
| 1721 | } |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 1722 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1723 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
| 1724 | out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1725 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1726 | mnt_drop_write_file(filp); |
| 1727 | return ret; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1728 | } |
| 1729 | |
| 1730 | static int f2fs_ioc_abort_volatile_write(struct file *filp) |
| 1731 | { |
| 1732 | struct inode *inode = file_inode(filp); |
| 1733 | int ret; |
| 1734 | |
| 1735 | if (!inode_owner_or_capable(inode)) |
| 1736 | return -EACCES; |
| 1737 | |
| 1738 | ret = mnt_want_write_file(filp); |
| 1739 | if (ret) |
| 1740 | return ret; |
| 1741 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1742 | inode_lock(inode); |
| 1743 | |
Jaegeuk Kim | 26dc3d4 | 2016-04-11 13:15:10 -0700 | [diff] [blame] | 1744 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 29b96b5 | 2016-02-06 14:38:29 +0800 | [diff] [blame] | 1745 | drop_inmem_pages(inode); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1746 | if (f2fs_is_volatile_file(inode)) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1747 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1748 | stat_dec_volatile_write(inode); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1749 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1750 | } |
Jaegeuk Kim | de6a8ec | 2015-06-08 17:51:10 -0700 | [diff] [blame] | 1751 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1752 | inode_unlock(inode); |
| 1753 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1754 | mnt_drop_write_file(filp); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1755 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1756 | return ret; |
| 1757 | } |
| 1758 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1759 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
| 1760 | { |
| 1761 | struct inode *inode = file_inode(filp); |
| 1762 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1763 | struct super_block *sb = sbi->sb; |
| 1764 | __u32 in; |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1765 | int ret; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1766 | |
| 1767 | if (!capable(CAP_SYS_ADMIN)) |
| 1768 | return -EPERM; |
| 1769 | |
| 1770 | if (get_user(in, (__u32 __user *)arg)) |
| 1771 | return -EFAULT; |
| 1772 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1773 | ret = mnt_want_write_file(filp); |
| 1774 | if (ret) |
| 1775 | return ret; |
| 1776 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1777 | switch (in) { |
| 1778 | case F2FS_GOING_DOWN_FULLSYNC: |
| 1779 | sb = freeze_bdev(sb->s_bdev); |
| 1780 | if (sb && !IS_ERR(sb)) { |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1781 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1782 | thaw_bdev(sb->s_bdev, sb); |
| 1783 | } |
| 1784 | break; |
| 1785 | case F2FS_GOING_DOWN_METASYNC: |
| 1786 | /* do checkpoint only */ |
| 1787 | f2fs_sync_fs(sb, 1); |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1788 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1789 | break; |
| 1790 | case F2FS_GOING_DOWN_NOSYNC: |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1791 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1792 | break; |
Jaegeuk Kim | c912a82 | 2015-10-07 09:46:37 -0700 | [diff] [blame] | 1793 | case F2FS_GOING_DOWN_METAFLUSH: |
| 1794 | sync_meta_pages(sbi, META, LONG_MAX); |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1795 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | c912a82 | 2015-10-07 09:46:37 -0700 | [diff] [blame] | 1796 | break; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1797 | default: |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1798 | ret = -EINVAL; |
| 1799 | goto out; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1800 | } |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1801 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1802 | out: |
| 1803 | mnt_drop_write_file(filp); |
| 1804 | return ret; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1805 | } |
| 1806 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1807 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
| 1808 | { |
| 1809 | struct inode *inode = file_inode(filp); |
| 1810 | struct super_block *sb = inode->i_sb; |
| 1811 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
| 1812 | struct fstrim_range range; |
| 1813 | int ret; |
| 1814 | |
| 1815 | if (!capable(CAP_SYS_ADMIN)) |
| 1816 | return -EPERM; |
| 1817 | |
| 1818 | if (!blk_queue_discard(q)) |
| 1819 | return -EOPNOTSUPP; |
| 1820 | |
| 1821 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
| 1822 | sizeof(range))) |
| 1823 | return -EFAULT; |
| 1824 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1825 | ret = mnt_want_write_file(filp); |
| 1826 | if (ret) |
| 1827 | return ret; |
| 1828 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1829 | range.minlen = max((unsigned int)range.minlen, |
| 1830 | q->limits.discard_granularity); |
| 1831 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1832 | mnt_drop_write_file(filp); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1833 | if (ret < 0) |
| 1834 | return ret; |
| 1835 | |
| 1836 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
| 1837 | sizeof(range))) |
| 1838 | return -EFAULT; |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1839 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1840 | return 0; |
| 1841 | } |
| 1842 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1843 | static bool uuid_is_nonzero(__u8 u[16]) |
| 1844 | { |
| 1845 | int i; |
| 1846 | |
| 1847 | for (i = 0; i < 16; i++) |
| 1848 | if (u[i]) |
| 1849 | return true; |
| 1850 | return false; |
| 1851 | } |
| 1852 | |
| 1853 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) |
| 1854 | { |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1855 | struct inode *inode = file_inode(filp); |
| 1856 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1857 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1858 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1859 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1860 | } |
| 1861 | |
| 1862 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) |
| 1863 | { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1864 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1865 | } |
| 1866 | |
| 1867 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) |
| 1868 | { |
| 1869 | struct inode *inode = file_inode(filp); |
| 1870 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1871 | int err; |
| 1872 | |
| 1873 | if (!f2fs_sb_has_crypto(inode->i_sb)) |
| 1874 | return -EOPNOTSUPP; |
| 1875 | |
| 1876 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) |
| 1877 | goto got_it; |
| 1878 | |
| 1879 | err = mnt_want_write_file(filp); |
| 1880 | if (err) |
| 1881 | return err; |
| 1882 | |
| 1883 | /* update superblock with uuid */ |
| 1884 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); |
| 1885 | |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 1886 | err = f2fs_commit_super(sbi, false); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1887 | if (err) { |
| 1888 | /* undo new data */ |
| 1889 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); |
Chao Yu | e8240f6 | 2015-12-15 17:19:26 +0800 | [diff] [blame] | 1890 | mnt_drop_write_file(filp); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1891 | return err; |
| 1892 | } |
Chao Yu | e8240f6 | 2015-12-15 17:19:26 +0800 | [diff] [blame] | 1893 | mnt_drop_write_file(filp); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1894 | got_it: |
| 1895 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, |
| 1896 | 16)) |
| 1897 | return -EFAULT; |
| 1898 | return 0; |
| 1899 | } |
| 1900 | |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1901 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
| 1902 | { |
| 1903 | struct inode *inode = file_inode(filp); |
| 1904 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1905 | __u32 sync; |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1906 | int ret; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1907 | |
| 1908 | if (!capable(CAP_SYS_ADMIN)) |
| 1909 | return -EPERM; |
| 1910 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1911 | if (get_user(sync, (__u32 __user *)arg)) |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1912 | return -EFAULT; |
| 1913 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1914 | if (f2fs_readonly(sbi->sb)) |
| 1915 | return -EROFS; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1916 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1917 | ret = mnt_want_write_file(filp); |
| 1918 | if (ret) |
| 1919 | return ret; |
| 1920 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1921 | if (!sync) { |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1922 | if (!mutex_trylock(&sbi->gc_mutex)) { |
| 1923 | ret = -EBUSY; |
| 1924 | goto out; |
| 1925 | } |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1926 | } else { |
| 1927 | mutex_lock(&sbi->gc_mutex); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1928 | } |
| 1929 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1930 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1931 | out: |
| 1932 | mnt_drop_write_file(filp); |
| 1933 | return ret; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1934 | } |
| 1935 | |
Jaegeuk Kim | 0bb5306 | 2017-06-15 16:44:42 -0700 | [diff] [blame] | 1936 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
| 1937 | { |
| 1938 | struct inode *inode = file_inode(filp); |
| 1939 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1940 | struct f2fs_gc_range range; |
| 1941 | u64 end; |
| 1942 | int ret; |
| 1943 | |
| 1944 | if (!capable(CAP_SYS_ADMIN)) |
| 1945 | return -EPERM; |
| 1946 | |
| 1947 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, |
| 1948 | sizeof(range))) |
| 1949 | return -EFAULT; |
| 1950 | |
| 1951 | if (f2fs_readonly(sbi->sb)) |
| 1952 | return -EROFS; |
| 1953 | |
| 1954 | ret = mnt_want_write_file(filp); |
| 1955 | if (ret) |
| 1956 | return ret; |
| 1957 | |
| 1958 | end = range.start + range.len; |
| 1959 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) |
| 1960 | return -EINVAL; |
| 1961 | do_more: |
| 1962 | if (!range.sync) { |
| 1963 | if (!mutex_trylock(&sbi->gc_mutex)) { |
| 1964 | ret = -EBUSY; |
| 1965 | goto out; |
| 1966 | } |
| 1967 | } else { |
| 1968 | mutex_lock(&sbi->gc_mutex); |
| 1969 | } |
| 1970 | |
| 1971 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); |
| 1972 | range.start += sbi->blocks_per_seg; |
| 1973 | if (range.start <= end) |
| 1974 | goto do_more; |
| 1975 | out: |
| 1976 | mnt_drop_write_file(filp); |
| 1977 | return ret; |
| 1978 | } |
| 1979 | |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1980 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
| 1981 | { |
| 1982 | struct inode *inode = file_inode(filp); |
| 1983 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1984 | int ret; |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 1985 | |
| 1986 | if (!capable(CAP_SYS_ADMIN)) |
| 1987 | return -EPERM; |
| 1988 | |
| 1989 | if (f2fs_readonly(sbi->sb)) |
| 1990 | return -EROFS; |
| 1991 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1992 | ret = mnt_want_write_file(filp); |
| 1993 | if (ret) |
| 1994 | return ret; |
| 1995 | |
| 1996 | ret = f2fs_sync_fs(sbi->sb, 1); |
| 1997 | |
| 1998 | mnt_drop_write_file(filp); |
| 1999 | return ret; |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 2000 | } |
| 2001 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2002 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
| 2003 | struct file *filp, |
| 2004 | struct f2fs_defragment *range) |
| 2005 | { |
| 2006 | struct inode *inode = file_inode(filp); |
Chao Yu | da85985 | 2016-01-26 15:42:58 +0800 | [diff] [blame] | 2007 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL }; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2008 | struct extent_info ei = {0,0,0}; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2009 | pgoff_t pg_start, pg_end; |
Chao Yu | 3519e3f | 2015-12-01 11:56:52 +0800 | [diff] [blame] | 2010 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2011 | unsigned int total = 0, sec_num; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2012 | block_t blk_end = 0; |
| 2013 | bool fragmented = false; |
| 2014 | int err; |
| 2015 | |
| 2016 | /* if in-place-update policy is enabled, don't waste time here */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2017 | if (need_inplace_update_policy(inode, NULL)) |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2018 | return -EINVAL; |
| 2019 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 2020 | pg_start = range->start >> PAGE_SHIFT; |
| 2021 | pg_end = (range->start + range->len) >> PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2022 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 2023 | f2fs_balance_fs(sbi, true); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2024 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 2025 | inode_lock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2026 | |
| 2027 | /* writeback all dirty pages in the range */ |
| 2028 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, |
Fan Li | d8fe4f0 | 2015-12-14 13:34:00 +0800 | [diff] [blame] | 2029 | range->start + range->len - 1); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2030 | if (err) |
| 2031 | goto out; |
| 2032 | |
| 2033 | /* |
| 2034 | * lookup mapping info in extent cache, skip defragmenting if physical |
| 2035 | * block addresses are continuous. |
| 2036 | */ |
| 2037 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { |
| 2038 | if (ei.fofs + ei.len >= pg_end) |
| 2039 | goto out; |
| 2040 | } |
| 2041 | |
| 2042 | map.m_lblk = pg_start; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2043 | |
| 2044 | /* |
| 2045 | * lookup mapping info in dnode page cache, skip defragmenting if all |
| 2046 | * physical block addresses are continuous even if there are hole(s) |
| 2047 | * in logical blocks. |
| 2048 | */ |
| 2049 | while (map.m_lblk < pg_end) { |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 2050 | map.m_len = pg_end - map.m_lblk; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2051 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
| 2052 | if (err) |
| 2053 | goto out; |
| 2054 | |
| 2055 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
| 2056 | map.m_lblk++; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2057 | continue; |
| 2058 | } |
| 2059 | |
| 2060 | if (blk_end && blk_end != map.m_pblk) { |
| 2061 | fragmented = true; |
| 2062 | break; |
| 2063 | } |
| 2064 | blk_end = map.m_pblk + map.m_len; |
| 2065 | |
| 2066 | map.m_lblk += map.m_len; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2067 | } |
| 2068 | |
| 2069 | if (!fragmented) |
| 2070 | goto out; |
| 2071 | |
| 2072 | map.m_lblk = pg_start; |
| 2073 | map.m_len = pg_end - pg_start; |
| 2074 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2075 | sec_num = (map.m_len + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2076 | |
| 2077 | /* |
| 2078 | * make sure there are enough free section for LFS allocation, this can |
| 2079 | * avoid defragment running in SSR mode when free section are allocated |
| 2080 | * intensively |
| 2081 | */ |
Jaegeuk Kim | 7f3037a | 2016-09-01 12:02:51 -0700 | [diff] [blame] | 2082 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2083 | err = -EAGAIN; |
| 2084 | goto out; |
| 2085 | } |
| 2086 | |
| 2087 | while (map.m_lblk < pg_end) { |
| 2088 | pgoff_t idx; |
| 2089 | int cnt = 0; |
| 2090 | |
| 2091 | do_map: |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 2092 | map.m_len = pg_end - map.m_lblk; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2093 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ); |
| 2094 | if (err) |
| 2095 | goto clear_out; |
| 2096 | |
| 2097 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
| 2098 | map.m_lblk++; |
| 2099 | continue; |
| 2100 | } |
| 2101 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2102 | set_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2103 | |
| 2104 | idx = map.m_lblk; |
| 2105 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { |
| 2106 | struct page *page; |
| 2107 | |
| 2108 | page = get_lock_data_page(inode, idx, true); |
| 2109 | if (IS_ERR(page)) { |
| 2110 | err = PTR_ERR(page); |
| 2111 | goto clear_out; |
| 2112 | } |
| 2113 | |
| 2114 | set_page_dirty(page); |
| 2115 | f2fs_put_page(page, 1); |
| 2116 | |
| 2117 | idx++; |
| 2118 | cnt++; |
| 2119 | total++; |
| 2120 | } |
| 2121 | |
| 2122 | map.m_lblk = idx; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2123 | |
| 2124 | if (idx < pg_end && cnt < blk_per_seg) |
| 2125 | goto do_map; |
| 2126 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2127 | clear_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2128 | |
| 2129 | err = filemap_fdatawrite(inode->i_mapping); |
| 2130 | if (err) |
| 2131 | goto out; |
| 2132 | } |
| 2133 | clear_out: |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2134 | clear_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2135 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 2136 | inode_unlock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2137 | if (!err) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 2138 | range->len = (u64)total << PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2139 | return err; |
| 2140 | } |
| 2141 | |
| 2142 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) |
| 2143 | { |
| 2144 | struct inode *inode = file_inode(filp); |
| 2145 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 2146 | struct f2fs_defragment range; |
| 2147 | int err; |
| 2148 | |
| 2149 | if (!capable(CAP_SYS_ADMIN)) |
| 2150 | return -EPERM; |
| 2151 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2152 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
| 2153 | return -EINVAL; |
| 2154 | |
| 2155 | if (f2fs_readonly(sbi->sb)) |
| 2156 | return -EROFS; |
| 2157 | |
| 2158 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, |
| 2159 | sizeof(range))) |
| 2160 | return -EFAULT; |
| 2161 | |
| 2162 | /* verify alignment of offset & size */ |
| 2163 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
| 2164 | return -EINVAL; |
| 2165 | |
| 2166 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
| 2167 | sbi->max_file_blocks)) |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2168 | return -EINVAL; |
| 2169 | |
| 2170 | err = mnt_want_write_file(filp); |
| 2171 | if (err) |
| 2172 | return err; |
| 2173 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2174 | err = f2fs_defragment_range(sbi, filp, &range); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2175 | mnt_drop_write_file(filp); |
| 2176 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 2177 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2178 | if (err < 0) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2179 | return err; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2180 | |
| 2181 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, |
| 2182 | sizeof(range))) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2183 | return -EFAULT; |
| 2184 | |
| 2185 | return 0; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2186 | } |
| 2187 | |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2188 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
| 2189 | struct file *file_out, loff_t pos_out, size_t len) |
| 2190 | { |
| 2191 | struct inode *src = file_inode(file_in); |
| 2192 | struct inode *dst = file_inode(file_out); |
| 2193 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); |
| 2194 | size_t olen = len, dst_max_i_size = 0; |
| 2195 | size_t dst_osize; |
| 2196 | int ret; |
| 2197 | |
| 2198 | if (file_in->f_path.mnt != file_out->f_path.mnt || |
| 2199 | src->i_sb != dst->i_sb) |
| 2200 | return -EXDEV; |
| 2201 | |
| 2202 | if (unlikely(f2fs_readonly(src->i_sb))) |
| 2203 | return -EROFS; |
| 2204 | |
Chao Yu | fe8494b | 2016-08-04 20:13:02 +0800 | [diff] [blame] | 2205 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
| 2206 | return -EINVAL; |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2207 | |
| 2208 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) |
| 2209 | return -EOPNOTSUPP; |
| 2210 | |
Fan Li | d95fd91 | 2016-09-13 11:35:42 +0800 | [diff] [blame] | 2211 | if (src == dst) { |
| 2212 | if (pos_in == pos_out) |
| 2213 | return 0; |
| 2214 | if (pos_out > pos_in && pos_out < pos_in + len) |
| 2215 | return -EINVAL; |
| 2216 | } |
| 2217 | |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2218 | inode_lock(src); |
Chao Yu | 20a3d61 | 2016-08-04 20:13:03 +0800 | [diff] [blame] | 2219 | if (src != dst) { |
| 2220 | if (!inode_trylock(dst)) { |
| 2221 | ret = -EBUSY; |
| 2222 | goto out; |
| 2223 | } |
| 2224 | } |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2225 | |
| 2226 | ret = -EINVAL; |
| 2227 | if (pos_in + len > src->i_size || pos_in + len < pos_in) |
| 2228 | goto out_unlock; |
| 2229 | if (len == 0) |
| 2230 | olen = len = src->i_size - pos_in; |
| 2231 | if (pos_in + len == src->i_size) |
| 2232 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; |
| 2233 | if (len == 0) { |
| 2234 | ret = 0; |
| 2235 | goto out_unlock; |
| 2236 | } |
| 2237 | |
| 2238 | dst_osize = dst->i_size; |
| 2239 | if (pos_out + olen > dst->i_size) |
| 2240 | dst_max_i_size = pos_out + olen; |
| 2241 | |
| 2242 | /* verify the end result is block aligned */ |
| 2243 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || |
| 2244 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || |
| 2245 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) |
| 2246 | goto out_unlock; |
| 2247 | |
| 2248 | ret = f2fs_convert_inline_inode(src); |
| 2249 | if (ret) |
| 2250 | goto out_unlock; |
| 2251 | |
| 2252 | ret = f2fs_convert_inline_inode(dst); |
| 2253 | if (ret) |
| 2254 | goto out_unlock; |
| 2255 | |
| 2256 | /* write out all dirty pages from offset */ |
| 2257 | ret = filemap_write_and_wait_range(src->i_mapping, |
| 2258 | pos_in, pos_in + len); |
| 2259 | if (ret) |
| 2260 | goto out_unlock; |
| 2261 | |
| 2262 | ret = filemap_write_and_wait_range(dst->i_mapping, |
| 2263 | pos_out, pos_out + len); |
| 2264 | if (ret) |
| 2265 | goto out_unlock; |
| 2266 | |
| 2267 | f2fs_balance_fs(sbi, true); |
| 2268 | f2fs_lock_op(sbi); |
Fan Li | 61e4da1 | 2016-09-10 11:19:37 +0800 | [diff] [blame] | 2269 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
| 2270 | pos_out >> F2FS_BLKSIZE_BITS, |
| 2271 | len >> F2FS_BLKSIZE_BITS, false); |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2272 | |
| 2273 | if (!ret) { |
| 2274 | if (dst_max_i_size) |
| 2275 | f2fs_i_size_write(dst, dst_max_i_size); |
| 2276 | else if (dst_osize != dst->i_size) |
| 2277 | f2fs_i_size_write(dst, dst_osize); |
| 2278 | } |
| 2279 | f2fs_unlock_op(sbi); |
| 2280 | out_unlock: |
| 2281 | if (src != dst) |
| 2282 | inode_unlock(dst); |
Chao Yu | 20a3d61 | 2016-08-04 20:13:03 +0800 | [diff] [blame] | 2283 | out: |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2284 | inode_unlock(src); |
| 2285 | return ret; |
| 2286 | } |
| 2287 | |
| 2288 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) |
| 2289 | { |
| 2290 | struct f2fs_move_range range; |
| 2291 | struct fd dst; |
| 2292 | int err; |
| 2293 | |
| 2294 | if (!(filp->f_mode & FMODE_READ) || |
| 2295 | !(filp->f_mode & FMODE_WRITE)) |
| 2296 | return -EBADF; |
| 2297 | |
| 2298 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, |
| 2299 | sizeof(range))) |
| 2300 | return -EFAULT; |
| 2301 | |
| 2302 | dst = fdget(range.dst_fd); |
| 2303 | if (!dst.file) |
| 2304 | return -EBADF; |
| 2305 | |
| 2306 | if (!(dst.file->f_mode & FMODE_WRITE)) { |
| 2307 | err = -EBADF; |
| 2308 | goto err_out; |
| 2309 | } |
| 2310 | |
| 2311 | err = mnt_want_write_file(filp); |
| 2312 | if (err) |
| 2313 | goto err_out; |
| 2314 | |
| 2315 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, |
| 2316 | range.pos_out, range.len); |
| 2317 | |
| 2318 | mnt_drop_write_file(filp); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2319 | if (err) |
| 2320 | goto err_out; |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2321 | |
| 2322 | if (copy_to_user((struct f2fs_move_range __user *)arg, |
| 2323 | &range, sizeof(range))) |
| 2324 | err = -EFAULT; |
| 2325 | err_out: |
| 2326 | fdput(dst); |
| 2327 | return err; |
| 2328 | } |
| 2329 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2330 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
| 2331 | { |
| 2332 | struct inode *inode = file_inode(filp); |
| 2333 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 2334 | struct sit_info *sm = SIT_I(sbi); |
| 2335 | unsigned int start_segno = 0, end_segno = 0; |
| 2336 | unsigned int dev_start_segno = 0, dev_end_segno = 0; |
| 2337 | struct f2fs_flush_device range; |
| 2338 | int ret; |
| 2339 | |
| 2340 | if (!capable(CAP_SYS_ADMIN)) |
| 2341 | return -EPERM; |
| 2342 | |
| 2343 | if (f2fs_readonly(sbi->sb)) |
| 2344 | return -EROFS; |
| 2345 | |
| 2346 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, |
| 2347 | sizeof(range))) |
| 2348 | return -EFAULT; |
| 2349 | |
| 2350 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || |
| 2351 | sbi->segs_per_sec != 1) { |
| 2352 | f2fs_msg(sbi->sb, KERN_WARNING, |
| 2353 | "Can't flush %u in %d for segs_per_sec %u != 1\n", |
| 2354 | range.dev_num, sbi->s_ndevs, |
| 2355 | sbi->segs_per_sec); |
| 2356 | return -EINVAL; |
| 2357 | } |
| 2358 | |
| 2359 | ret = mnt_want_write_file(filp); |
| 2360 | if (ret) |
| 2361 | return ret; |
| 2362 | |
| 2363 | if (range.dev_num != 0) |
| 2364 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); |
| 2365 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); |
| 2366 | |
| 2367 | start_segno = sm->last_victim[FLUSH_DEVICE]; |
| 2368 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) |
| 2369 | start_segno = dev_start_segno; |
| 2370 | end_segno = min(start_segno + range.segments, dev_end_segno); |
| 2371 | |
| 2372 | while (start_segno < end_segno) { |
| 2373 | if (!mutex_trylock(&sbi->gc_mutex)) { |
| 2374 | ret = -EBUSY; |
| 2375 | goto out; |
| 2376 | } |
| 2377 | sm->last_victim[GC_CB] = end_segno + 1; |
| 2378 | sm->last_victim[GC_GREEDY] = end_segno + 1; |
| 2379 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; |
| 2380 | ret = f2fs_gc(sbi, true, true, start_segno); |
| 2381 | if (ret == -EAGAIN) |
| 2382 | ret = 0; |
| 2383 | else if (ret < 0) |
| 2384 | break; |
| 2385 | start_segno++; |
| 2386 | } |
| 2387 | out: |
| 2388 | mnt_drop_write_file(filp); |
| 2389 | return ret; |
| 2390 | } |
| 2391 | |
Jaegeuk Kim | 82925bb | 2017-07-21 12:58:59 -0700 | [diff] [blame] | 2392 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
| 2393 | { |
| 2394 | struct inode *inode = file_inode(filp); |
| 2395 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); |
| 2396 | |
| 2397 | /* Must validate to set it with SQLite behavior in Android. */ |
| 2398 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; |
| 2399 | |
| 2400 | return put_user(sb_feature, (u32 __user *)arg); |
| 2401 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2402 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2403 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
| 2404 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2405 | switch (cmd) { |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 2406 | case F2FS_IOC_GETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2407 | return f2fs_ioc_getflags(filp, arg); |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 2408 | case F2FS_IOC_SETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2409 | return f2fs_ioc_setflags(filp, arg); |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 2410 | case F2FS_IOC_GETVERSION: |
| 2411 | return f2fs_ioc_getversion(filp, arg); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 2412 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 2413 | return f2fs_ioc_start_atomic_write(filp); |
| 2414 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 2415 | return f2fs_ioc_commit_atomic_write(filp); |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 2416 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 2417 | return f2fs_ioc_start_volatile_write(filp); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 2418 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 2419 | return f2fs_ioc_release_volatile_write(filp); |
| 2420 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 2421 | return f2fs_ioc_abort_volatile_write(filp); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 2422 | case F2FS_IOC_SHUTDOWN: |
| 2423 | return f2fs_ioc_shutdown(filp, arg); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 2424 | case FITRIM: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2425 | return f2fs_ioc_fitrim(filp, arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 2426 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 2427 | return f2fs_ioc_set_encryption_policy(filp, arg); |
| 2428 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 2429 | return f2fs_ioc_get_encryption_policy(filp, arg); |
| 2430 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 2431 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2432 | case F2FS_IOC_GARBAGE_COLLECT: |
| 2433 | return f2fs_ioc_gc(filp, arg); |
Jaegeuk Kim | 0bb5306 | 2017-06-15 16:44:42 -0700 | [diff] [blame] | 2434 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
| 2435 | return f2fs_ioc_gc_range(filp, arg); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 2436 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 2437 | return f2fs_ioc_write_checkpoint(filp, arg); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2438 | case F2FS_IOC_DEFRAGMENT: |
| 2439 | return f2fs_ioc_defragment(filp, arg); |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2440 | case F2FS_IOC_MOVE_RANGE: |
| 2441 | return f2fs_ioc_move_range(filp, arg); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2442 | case F2FS_IOC_FLUSH_DEVICE: |
| 2443 | return f2fs_ioc_flush_device(filp, arg); |
Jaegeuk Kim | 82925bb | 2017-07-21 12:58:59 -0700 | [diff] [blame] | 2444 | case F2FS_IOC_GET_FEATURES: |
| 2445 | return f2fs_ioc_get_features(filp, arg); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2446 | default: |
| 2447 | return -ENOTTY; |
| 2448 | } |
| 2449 | } |
| 2450 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2451 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
| 2452 | { |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2453 | struct file *file = iocb->ki_filp; |
| 2454 | struct inode *inode = file_inode(file); |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 2455 | struct blk_plug plug; |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2456 | ssize_t ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2457 | |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2458 | inode_lock(inode); |
| 2459 | ret = generic_write_checks(iocb, from); |
| 2460 | if (ret > 0) { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2461 | int err; |
| 2462 | |
| 2463 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
| 2464 | set_inode_flag(inode, FI_NO_PREALLOC); |
| 2465 | |
| 2466 | err = f2fs_preallocate_blocks(iocb, from); |
| 2467 | if (err) { |
| 2468 | inode_unlock(inode); |
| 2469 | return err; |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 2470 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2471 | blk_start_plug(&plug); |
| 2472 | ret = __generic_file_write_iter(iocb, from); |
| 2473 | blk_finish_plug(&plug); |
| 2474 | clear_inode_flag(inode, FI_NO_PREALLOC); |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2475 | } |
| 2476 | inode_unlock(inode); |
| 2477 | |
Christoph Hellwig | e259221 | 2016-04-07 08:52:01 -0700 | [diff] [blame] | 2478 | if (ret > 0) |
| 2479 | ret = generic_write_sync(iocb, ret); |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2480 | return ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2481 | } |
| 2482 | |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2483 | #ifdef CONFIG_COMPAT |
| 2484 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 2485 | { |
| 2486 | switch (cmd) { |
| 2487 | case F2FS_IOC32_GETFLAGS: |
| 2488 | cmd = F2FS_IOC_GETFLAGS; |
| 2489 | break; |
| 2490 | case F2FS_IOC32_SETFLAGS: |
| 2491 | cmd = F2FS_IOC_SETFLAGS; |
| 2492 | break; |
Chao Yu | 04ef4b6 | 2015-11-10 18:44:20 +0800 | [diff] [blame] | 2493 | case F2FS_IOC32_GETVERSION: |
| 2494 | cmd = F2FS_IOC_GETVERSION; |
| 2495 | break; |
| 2496 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 2497 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 2498 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 2499 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 2500 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 2501 | case F2FS_IOC_SHUTDOWN: |
| 2502 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 2503 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 2504 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 2505 | case F2FS_IOC_GARBAGE_COLLECT: |
Jaegeuk Kim | 0bb5306 | 2017-06-15 16:44:42 -0700 | [diff] [blame] | 2506 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
Chao Yu | 04ef4b6 | 2015-11-10 18:44:20 +0800 | [diff] [blame] | 2507 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 2508 | case F2FS_IOC_DEFRAGMENT: |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2509 | case F2FS_IOC_MOVE_RANGE: |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2510 | case F2FS_IOC_FLUSH_DEVICE: |
Jaegeuk Kim | 82925bb | 2017-07-21 12:58:59 -0700 | [diff] [blame] | 2511 | case F2FS_IOC_GET_FEATURES: |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2512 | break; |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2513 | default: |
| 2514 | return -ENOIOCTLCMD; |
| 2515 | } |
| 2516 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
| 2517 | } |
| 2518 | #endif |
| 2519 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2520 | const struct file_operations f2fs_file_operations = { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 2521 | .llseek = f2fs_llseek, |
Al Viro | aad4f8b | 2014-04-02 14:33:16 -0400 | [diff] [blame] | 2522 | .read_iter = generic_file_read_iter, |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2523 | .write_iter = f2fs_file_write_iter, |
| 2524 | .open = f2fs_file_open, |
Jaegeuk Kim | 1266223 | 2014-12-05 14:37:37 -0800 | [diff] [blame] | 2525 | .release = f2fs_release_file, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2526 | .mmap = f2fs_file_mmap, |
Jaegeuk Kim | a778c4c | 2017-07-24 19:46:29 -0700 | [diff] [blame] | 2527 | .flush = f2fs_file_flush, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2528 | .fsync = f2fs_sync_file, |
| 2529 | .fallocate = f2fs_fallocate, |
| 2530 | .unlocked_ioctl = f2fs_ioctl, |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2531 | #ifdef CONFIG_COMPAT |
| 2532 | .compat_ioctl = f2fs_compat_ioctl, |
| 2533 | #endif |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2534 | .splice_read = generic_file_splice_read, |
Al Viro | 8d02076 | 2014-04-05 04:27:08 -0400 | [diff] [blame] | 2535 | .splice_write = iter_file_splice_write, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2536 | }; |