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 | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 58 | if (unlikely(f2fs_cp_error(sbi))) { |
| 59 | err = -EIO; |
| 60 | goto err; |
| 61 | } |
| 62 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 63 | sb_start_pagefault(inode->i_sb); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 64 | |
| 65 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); |
Jaegeuk Kim | b067ba1 | 2014-08-07 16:32:25 -0700 | [diff] [blame] | 66 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 67 | /* block allocation */ |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 68 | f2fs_lock_op(sbi); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 69 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | 9ba69cf | 2014-10-17 20:33:55 -0700 | [diff] [blame] | 70 | err = f2fs_reserve_block(&dn, page->index); |
| 71 | if (err) { |
| 72 | f2fs_unlock_op(sbi); |
| 73 | goto out; |
| 74 | } |
| 75 | f2fs_put_dnode(&dn); |
| 76 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 77 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 78 | f2fs_balance_fs(sbi, dn.node_changed); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 79 | |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 80 | file_update_time(vma->vm_file); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 81 | down_read(&F2FS_I(inode)->i_mmap_sem); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 82 | lock_page(page); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 83 | if (unlikely(page->mapping != inode->i_mapping || |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 84 | page_offset(page) > i_size_read(inode) || |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 85 | !PageUptodate(page))) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 86 | unlock_page(page); |
| 87 | err = -EFAULT; |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 88 | goto out_sem; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | /* |
| 92 | * check to see if the page is mapped already (no holes) |
| 93 | */ |
| 94 | if (PageMappedToDisk(page)) |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 95 | goto mapped; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 96 | |
| 97 | /* page is wholly or partially inside EOF */ |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 98 | if (((loff_t)(page->index + 1) << PAGE_SHIFT) > |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 99 | i_size_read(inode)) { |
youngjun yoo | ee62ea2 | 2018-05-30 04:21:14 +0900 | [diff] [blame] | 100 | loff_t offset; |
youngjun yoo | 9ef1031 | 2018-05-30 04:33:07 +0900 | [diff] [blame] | 101 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 102 | offset = i_size_read(inode) & ~PAGE_MASK; |
| 103 | zero_user_segment(page, offset, PAGE_SIZE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 104 | } |
| 105 | set_page_dirty(page); |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 106 | if (!PageUptodate(page)) |
| 107 | SetPageUptodate(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 108 | |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 109 | f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE); |
| 110 | |
Jaegeuk Kim | e943a10 | 2013-10-25 14:26:31 +0900 | [diff] [blame] | 111 | trace_f2fs_vm_page_mkwrite(page, DATA); |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 112 | mapped: |
| 113 | /* fill the page */ |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 114 | f2fs_wait_on_page_writeback(page, DATA, false); |
Chao Yu | 08b39fb | 2015-10-08 13:27:34 +0800 | [diff] [blame] | 115 | |
Eric Biggers | f69e814 | 2018-04-18 11:09:48 -0700 | [diff] [blame] | 116 | /* wait for GCed page writeback via META_MAPPING */ |
| 117 | if (f2fs_post_read_required(inode)) |
Jaegeuk Kim | fb605d0 | 2017-09-05 17:04:35 -0700 | [diff] [blame] | 118 | f2fs_wait_on_block_writeback(sbi, dn.data_blkaddr); |
Chao Yu | 08b39fb | 2015-10-08 13:27:34 +0800 | [diff] [blame] | 119 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 120 | out_sem: |
| 121 | up_read(&F2FS_I(inode)->i_mmap_sem); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 122 | out: |
| 123 | sb_end_pagefault(inode->i_sb); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 124 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 125 | err: |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 126 | return block_page_mkwrite_return(err); |
| 127 | } |
| 128 | |
| 129 | static const struct vm_operations_struct f2fs_file_vm_ops = { |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 130 | .fault = f2fs_filemap_fault, |
Kirill A. Shutemov | f182036 | 2014-04-07 15:37:19 -0700 | [diff] [blame] | 131 | .map_pages = filemap_map_pages, |
Jaegeuk Kim | 692bb55 | 2013-01-17 18:37:41 +0900 | [diff] [blame] | 132 | .page_mkwrite = f2fs_vm_page_mkwrite, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 133 | }; |
| 134 | |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 135 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
| 136 | { |
| 137 | struct dentry *dentry; |
| 138 | |
| 139 | inode = igrab(inode); |
| 140 | dentry = d_find_any_alias(inode); |
| 141 | iput(inode); |
| 142 | if (!dentry) |
| 143 | return 0; |
| 144 | |
Jaegeuk Kim | f0947e5 | 2013-07-22 22:12:56 +0900 | [diff] [blame] | 145 | *pino = parent_ino(dentry); |
| 146 | dput(dentry); |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 147 | return 1; |
| 148 | } |
| 149 | |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 150 | static inline enum cp_reason_type need_do_checkpoint(struct inode *inode) |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 151 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 152 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 153 | enum cp_reason_type cp_reason = CP_NO_NEEDED; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 154 | |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 155 | if (!S_ISREG(inode->i_mode)) |
| 156 | cp_reason = CP_NON_REGULAR; |
| 157 | else if (inode->i_nlink != 1) |
| 158 | cp_reason = CP_HARDLINK; |
Jaegeuk Kim | bbf156f | 2016-08-29 18:23:45 -0700 | [diff] [blame] | 159 | else if (is_sbi_flag_set(sbi, SBI_NEED_CP)) |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 160 | cp_reason = CP_SB_NEED_CP; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 161 | else if (file_wrong_pino(inode)) |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 162 | cp_reason = CP_WRONG_PINO; |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 163 | else if (!f2fs_space_for_roll_forward(sbi)) |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 164 | cp_reason = CP_NO_SPC_ROLL; |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 165 | else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 166 | cp_reason = CP_NODE_NEED_CP; |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 167 | else if (test_opt(sbi, FASTBOOT)) |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 168 | cp_reason = CP_FASTBOOT_MODE; |
Chao Yu | e9a50e6 | 2018-03-08 14:22:56 +0800 | [diff] [blame] | 169 | else if (F2FS_OPTION(sbi).active_logs == 2) |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 170 | cp_reason = CP_SPEC_LOG_NUM; |
Chao Yu | e9a50e6 | 2018-03-08 14:22:56 +0800 | [diff] [blame] | 171 | else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT && |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 172 | f2fs_need_dentry_mark(sbi, inode->i_ino) && |
| 173 | f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino, |
| 174 | TRANS_DIR_INO)) |
Jaegeuk Kim | 211cb7b | 2017-12-28 08:09:44 -0800 | [diff] [blame] | 175 | cp_reason = CP_RECOVER_DIR; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 176 | |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 177 | return cp_reason; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 178 | } |
| 179 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 180 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
| 181 | { |
| 182 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); |
| 183 | bool ret = false; |
| 184 | /* But we need to avoid that there are some inode updates */ |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 185 | if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino)) |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 186 | ret = true; |
| 187 | f2fs_put_page(i, 0); |
| 188 | return ret; |
| 189 | } |
| 190 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 191 | static void try_to_fix_pino(struct inode *inode) |
| 192 | { |
| 193 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 194 | nid_t pino; |
| 195 | |
| 196 | down_write(&fi->i_sem); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 197 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
| 198 | get_parent_ino(inode, &pino)) { |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 199 | f2fs_i_pino_write(inode, pino); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 200 | file_got_pino(inode); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 201 | } |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 202 | up_write(&fi->i_sem); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 203 | } |
| 204 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 205 | static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, |
| 206 | int datasync, bool atomic) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 207 | { |
| 208 | struct inode *inode = file->f_mapping->host; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 209 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 210 | nid_t ino = inode->i_ino; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 211 | int ret = 0; |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 212 | enum cp_reason_type cp_reason = 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 213 | struct writeback_control wbc = { |
Jaegeuk Kim | c81bf1c | 2014-03-03 11:28:40 +0900 | [diff] [blame] | 214 | .sync_mode = WB_SYNC_ALL, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 215 | .nr_to_write = LONG_MAX, |
| 216 | .for_reclaim = 0, |
| 217 | }; |
| 218 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 219 | if (unlikely(f2fs_readonly(inode->i_sb))) |
Namjae Jeon | 1fa95b0 | 2012-12-01 10:56:01 +0900 | [diff] [blame] | 220 | return 0; |
| 221 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 222 | trace_f2fs_sync_file_enter(inode); |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 223 | |
| 224 | /* if fdatasync is triggered, let's do in-place-update */ |
Jaegeuk Kim | c46a155 | 2015-12-31 13:49:17 -0800 | [diff] [blame] | 225 | if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 226 | set_inode_flag(inode, FI_NEED_IPU); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 227 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 228 | clear_inode_flag(inode, FI_NEED_IPU); |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 229 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 230 | if (ret) { |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 231 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 232 | return ret; |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 233 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 234 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 235 | /* if the inode is dirty, let's recover all the time */ |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 236 | if (!f2fs_skip_inode_update(inode, datasync)) { |
Jaegeuk Kim | 2286c02 | 2015-08-15 21:51:05 -0700 | [diff] [blame] | 237 | f2fs_write_inode(inode, NULL); |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 238 | goto go_write; |
| 239 | } |
| 240 | |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 241 | /* |
| 242 | * if there is no written data, don't waste time to write recovery info. |
| 243 | */ |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 244 | if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 245 | !f2fs_exist_written_data(sbi, ino, APPEND_INO)) { |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 246 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 247 | /* it may call write_inode just prior to fsync */ |
| 248 | if (need_inode_page_update(sbi, ino)) |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 249 | goto go_write; |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 250 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 251 | if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 252 | f2fs_exist_written_data(sbi, ino, UPDATE_INO)) |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 253 | goto flush_out; |
| 254 | goto out; |
| 255 | } |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 256 | go_write: |
Jaegeuk Kim | e5d2385 | 2013-07-03 10:55:52 +0900 | [diff] [blame] | 257 | /* |
| 258 | * Both of fdatasync() and fsync() are able to be recovered from |
| 259 | * sudden-power-off. |
| 260 | */ |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 261 | down_read(&F2FS_I(inode)->i_sem); |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 262 | cp_reason = need_do_checkpoint(inode); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 263 | up_read(&F2FS_I(inode)->i_sem); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 264 | |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 265 | if (cp_reason) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 266 | /* all the dirty node pages should be flushed for POR */ |
| 267 | ret = f2fs_sync_fs(inode->i_sb, 1); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 268 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 269 | /* |
| 270 | * We've secured consistency through sync_fs. Following pino |
| 271 | * will be used only for fsynced inodes after checkpoint. |
| 272 | */ |
| 273 | try_to_fix_pino(inode); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 274 | clear_inode_flag(inode, FI_APPEND_WRITE); |
| 275 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 276 | goto out; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 277 | } |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 278 | sync_nodes: |
Chao Yu | deb78d4 | 2018-06-04 23:20:36 +0800 | [diff] [blame^] | 279 | atomic_inc(&sbi->wb_sync_req[NODE]); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 280 | ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic); |
Chao Yu | deb78d4 | 2018-06-04 23:20:36 +0800 | [diff] [blame^] | 281 | atomic_dec(&sbi->wb_sync_req[NODE]); |
Jaegeuk Kim | c267ec1 | 2016-04-15 09:25:04 -0700 | [diff] [blame] | 282 | if (ret) |
| 283 | goto out; |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 284 | |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 285 | /* if cp_error was enabled, we should avoid infinite loop */ |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 286 | if (unlikely(f2fs_cp_error(sbi))) { |
| 287 | ret = -EIO; |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 288 | goto out; |
Chao Yu | 6d5a149 | 2015-12-24 18:04:56 +0800 | [diff] [blame] | 289 | } |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 290 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 291 | if (f2fs_need_inode_block_update(sbi, ino)) { |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 292 | f2fs_mark_inode_dirty_sync(inode, true); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 293 | f2fs_write_inode(inode, NULL); |
| 294 | goto sync_nodes; |
| 295 | } |
| 296 | |
Jaegeuk Kim | 48f95d2 | 2017-07-28 02:29:12 -0700 | [diff] [blame] | 297 | /* |
| 298 | * If it's atomic_write, it's just fine to keep write ordering. So |
| 299 | * here we don't need to wait for node write completion, since we use |
| 300 | * node chain which serializes node blocks. If one of node writes are |
| 301 | * reordered, we can see simply broken chain, resulting in stopping |
| 302 | * roll-forward recovery. It means we'll recover all or none node blocks |
| 303 | * given fsync mark. |
| 304 | */ |
| 305 | if (!atomic) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 306 | ret = f2fs_wait_on_node_pages_writeback(sbi, ino); |
Jaegeuk Kim | 48f95d2 | 2017-07-28 02:29:12 -0700 | [diff] [blame] | 307 | if (ret) |
| 308 | goto out; |
| 309 | } |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 310 | |
| 311 | /* once recovery info is written, don't need to tack this */ |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 312 | f2fs_remove_ino_entry(sbi, ino, APPEND_INO); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 313 | clear_inode_flag(inode, FI_APPEND_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 314 | flush_out: |
Jaegeuk Kim | 3a38cf1 | 2018-05-25 18:02:58 -0700 | [diff] [blame] | 315 | if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) |
Chao Yu | f014be8 | 2017-09-29 13:59:38 +0800 | [diff] [blame] | 316 | ret = f2fs_issue_flush(sbi, inode->i_ino); |
Chao Yu | cacc1ed | 2017-09-29 13:59:36 +0800 | [diff] [blame] | 317 | if (!ret) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 318 | f2fs_remove_ino_entry(sbi, ino, UPDATE_INO); |
Chao Yu | cacc1ed | 2017-09-29 13:59:36 +0800 | [diff] [blame] | 319 | clear_inode_flag(inode, FI_UPDATE_WRITE); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 320 | f2fs_remove_ino_entry(sbi, ino, FLUSH_INO); |
Chao Yu | cacc1ed | 2017-09-29 13:59:36 +0800 | [diff] [blame] | 321 | } |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 322 | f2fs_update_time(sbi, REQ_TIME); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 323 | out: |
Chao Yu | d75eb8d | 2017-11-06 22:51:45 +0800 | [diff] [blame] | 324 | trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 325 | f2fs_trace_ios(NULL, 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 326 | return ret; |
| 327 | } |
| 328 | |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 329 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
| 330 | { |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 331 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file))))) |
| 332 | return -EIO; |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 333 | return f2fs_do_sync_file(file, start, end, datasync, false); |
| 334 | } |
| 335 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 336 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
| 337 | pgoff_t pgofs, int whence) |
| 338 | { |
Jan Kara | c446430 | 2017-11-15 17:34:55 -0800 | [diff] [blame] | 339 | struct page *page; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 340 | int nr_pages; |
| 341 | |
| 342 | if (whence != SEEK_DATA) |
| 343 | return 0; |
| 344 | |
| 345 | /* find first dirty page index */ |
Jan Kara | c446430 | 2017-11-15 17:34:55 -0800 | [diff] [blame] | 346 | nr_pages = find_get_pages_tag(mapping, &pgofs, PAGECACHE_TAG_DIRTY, |
| 347 | 1, &page); |
| 348 | if (!nr_pages) |
| 349 | return ULONG_MAX; |
| 350 | pgofs = page->index; |
| 351 | put_page(page); |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 352 | return pgofs; |
| 353 | } |
| 354 | |
| 355 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, |
| 356 | int whence) |
| 357 | { |
| 358 | switch (whence) { |
| 359 | case SEEK_DATA: |
| 360 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || |
Chao Yu | 158d9bb | 2018-05-23 22:25:08 +0800 | [diff] [blame] | 361 | is_valid_blkaddr(blkaddr)) |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 362 | return true; |
| 363 | break; |
| 364 | case SEEK_HOLE: |
| 365 | if (blkaddr == NULL_ADDR) |
| 366 | return true; |
| 367 | break; |
| 368 | } |
| 369 | return false; |
| 370 | } |
| 371 | |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 372 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
| 373 | { |
| 374 | struct inode *inode = file->f_mapping->host; |
| 375 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 376 | struct dnode_of_data dn; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 377 | pgoff_t pgofs, end_offset, dirty; |
| 378 | loff_t data_ofs = offset; |
| 379 | loff_t isize; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 380 | int err = 0; |
| 381 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 382 | inode_lock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 383 | |
| 384 | isize = i_size_read(inode); |
| 385 | if (offset >= isize) |
| 386 | goto fail; |
| 387 | |
| 388 | /* handle inline data case */ |
Chao Yu | 622f28a | 2014-09-24 18:19:10 +0800 | [diff] [blame] | 389 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 390 | if (whence == SEEK_HOLE) |
| 391 | data_ofs = isize; |
| 392 | goto found; |
| 393 | } |
| 394 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 395 | pgofs = (pgoff_t)(offset >> PAGE_SHIFT); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 396 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 397 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
| 398 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 399 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 400 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 401 | err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 402 | if (err && err != -ENOENT) { |
| 403 | goto fail; |
| 404 | } else if (err == -ENOENT) { |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 405 | /* direct node does not exists */ |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 406 | if (whence == SEEK_DATA) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 407 | pgofs = f2fs_get_next_page_offset(&dn, pgofs); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 408 | continue; |
| 409 | } else { |
| 410 | goto found; |
| 411 | } |
| 412 | } |
| 413 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 414 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 415 | |
| 416 | /* find data/hole in dnode block */ |
| 417 | for (; dn.ofs_in_node < end_offset; |
| 418 | dn.ofs_in_node++, pgofs++, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 419 | data_ofs = (loff_t)pgofs << PAGE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 420 | block_t blkaddr; |
youngjun yoo | 9ef1031 | 2018-05-30 04:33:07 +0900 | [diff] [blame] | 421 | |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 422 | blkaddr = datablock_addr(dn.inode, |
| 423 | dn.node_page, dn.ofs_in_node); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 424 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 425 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 426 | f2fs_put_dnode(&dn); |
| 427 | goto found; |
| 428 | } |
| 429 | } |
| 430 | f2fs_put_dnode(&dn); |
| 431 | } |
| 432 | |
| 433 | if (whence == SEEK_DATA) |
| 434 | goto fail; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 435 | found: |
Jaegeuk Kim | fe369bc | 2014-04-28 17:02:48 +0900 | [diff] [blame] | 436 | if (whence == SEEK_HOLE && data_ofs > isize) |
| 437 | data_ofs = isize; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 438 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 439 | return vfs_setpos(file, data_ofs, maxbytes); |
| 440 | fail: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 441 | inode_unlock(inode); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 442 | return -ENXIO; |
| 443 | } |
| 444 | |
| 445 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) |
| 446 | { |
| 447 | struct inode *inode = file->f_mapping->host; |
| 448 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 449 | |
| 450 | switch (whence) { |
| 451 | case SEEK_SET: |
| 452 | case SEEK_CUR: |
| 453 | case SEEK_END: |
| 454 | return generic_file_llseek_size(file, offset, whence, |
| 455 | maxbytes, i_size_read(inode)); |
| 456 | case SEEK_DATA: |
| 457 | case SEEK_HOLE: |
Jaegeuk Kim | 0b4c5afde | 2014-09-08 10:59:43 -0700 | [diff] [blame] | 458 | if (offset < 0) |
| 459 | return -ENXIO; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 460 | return f2fs_seek_block(file, offset, whence); |
| 461 | } |
| 462 | |
| 463 | return -EINVAL; |
| 464 | } |
| 465 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 466 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
| 467 | { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 468 | struct inode *inode = file_inode(file); |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 469 | int err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 470 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 471 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
| 472 | return -EIO; |
| 473 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 474 | /* we don't need to use inline_data strictly */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 475 | err = f2fs_convert_inline_inode(inode); |
| 476 | if (err) |
| 477 | return err; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 478 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 479 | file_accessed(file); |
| 480 | vma->vm_ops = &f2fs_file_vm_ops; |
| 481 | return 0; |
| 482 | } |
| 483 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 484 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
| 485 | { |
Eric Biggers | 3ccc177 | 2017-11-29 12:35:28 -0800 | [diff] [blame] | 486 | int err = fscrypt_file_open(inode, filp); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 487 | |
Eric Biggers | 3ccc177 | 2017-11-29 12:35:28 -0800 | [diff] [blame] | 488 | if (err) |
| 489 | return err; |
Hyunchul Lee | 355d234 | 2018-03-08 19:34:38 +0900 | [diff] [blame] | 490 | |
| 491 | filp->f_mode |= FMODE_NOWAIT; |
| 492 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 493 | return dquot_file_open(inode, filp); |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 494 | } |
| 495 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 496 | void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 497 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 498 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 499 | struct f2fs_node *raw_node; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 500 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 501 | __le32 *addr; |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 502 | int base = 0; |
| 503 | |
| 504 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) |
| 505 | base = get_extra_isize(dn->inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 506 | |
Gu Zheng | 4559071 | 2013-07-15 17:57:38 +0800 | [diff] [blame] | 507 | raw_node = F2FS_NODE(dn->node_page); |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 508 | addr = blkaddr_in_node(raw_node) + base + ofs; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 509 | |
Chris Fries | 6c311ec | 2014-01-17 14:44:39 -0600 | [diff] [blame] | 510 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 511 | block_t blkaddr = le32_to_cpu(*addr); |
youngjun yoo | 9ef1031 | 2018-05-30 04:33:07 +0900 | [diff] [blame] | 512 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 513 | if (blkaddr == NULL_ADDR) |
| 514 | continue; |
| 515 | |
Jaegeuk Kim | e1509cf | 2014-12-30 22:57:55 -0800 | [diff] [blame] | 516 | dn->data_blkaddr = NULL_ADDR; |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 517 | f2fs_set_data_blkaddr(dn); |
| 518 | f2fs_invalidate_blocks(sbi, blkaddr); |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 519 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 520 | clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 521 | nr_free++; |
| 522 | } |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 523 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 524 | if (nr_free) { |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 525 | pgoff_t fofs; |
| 526 | /* |
| 527 | * once we invalidate valid blkaddr in range [ofs, ofs + count], |
| 528 | * we will invalidate all blkaddr in the whole range. |
| 529 | */ |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 530 | fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 531 | dn->inode) + ofs; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 532 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
Namjae Jeon | d7cc950 | 2013-06-08 21:25:40 +0900 | [diff] [blame] | 533 | dec_valid_block_count(sbi, dn->inode, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 534 | } |
| 535 | dn->ofs_in_node = ofs; |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 536 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 537 | f2fs_update_time(sbi, REQ_TIME); |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 538 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
| 539 | dn->ofs_in_node, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 540 | } |
| 541 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 542 | void f2fs_truncate_data_blocks(struct dnode_of_data *dn) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 543 | { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 544 | f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 545 | } |
| 546 | |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 547 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 548 | bool cache_only) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 549 | { |
youngjun yoo | ee62ea2 | 2018-05-30 04:21:14 +0900 | [diff] [blame] | 550 | loff_t offset = from & (PAGE_SIZE - 1); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 551 | pgoff_t index = from >> PAGE_SHIFT; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 552 | struct address_space *mapping = inode->i_mapping; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 553 | struct page *page; |
| 554 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 555 | if (!offset && !cache_only) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 556 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 557 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 558 | if (cache_only) { |
Jaegeuk Kim | 34b5d5c | 2016-09-06 15:55:54 -0700 | [diff] [blame] | 559 | page = find_lock_page(mapping, index); |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 560 | if (page && PageUptodate(page)) |
| 561 | goto truncate_out; |
| 562 | f2fs_put_page(page, 1); |
| 563 | return 0; |
| 564 | } |
| 565 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 566 | page = f2fs_get_lock_data_page(inode, index, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 567 | if (IS_ERR(page)) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 568 | return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page); |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 569 | truncate_out: |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 570 | f2fs_wait_on_page_writeback(page, DATA, true); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 571 | zero_user(page, offset, PAGE_SIZE - offset); |
Jaegeuk Kim | 231cb87 | 2017-06-14 08:05:32 -0700 | [diff] [blame] | 572 | |
| 573 | /* An encrypted inode should have a key and truncate the last page. */ |
| 574 | f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode)); |
| 575 | if (!cache_only) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 576 | set_page_dirty(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 577 | f2fs_put_page(page, 1); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 578 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 579 | } |
| 580 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 581 | int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 582 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 583 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 584 | struct dnode_of_data dn; |
| 585 | pgoff_t free_from; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 586 | int count = 0, err = 0; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 587 | struct page *ipage; |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 588 | bool truncate_page = false; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 589 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 590 | trace_f2fs_truncate_blocks_enter(inode, from); |
| 591 | |
Chao Yu | a33ce03 | 2018-03-20 23:08:29 +0800 | [diff] [blame] | 592 | free_from = (pgoff_t)F2FS_BLK_ALIGN(from); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 593 | |
Chao Yu | 09210c9 | 2016-05-05 19:13:03 +0800 | [diff] [blame] | 594 | if (free_from >= sbi->max_file_blocks) |
| 595 | goto free_partial; |
| 596 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 597 | if (lock) |
| 598 | f2fs_lock_op(sbi); |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 599 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 600 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 601 | if (IS_ERR(ipage)) { |
| 602 | err = PTR_ERR(ipage); |
| 603 | goto out; |
| 604 | } |
| 605 | |
| 606 | if (f2fs_has_inline_data(inode)) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 607 | f2fs_truncate_inline_inode(inode, ipage, from); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 608 | f2fs_put_page(ipage, 1); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 609 | truncate_page = true; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 610 | goto out; |
| 611 | } |
| 612 | |
| 613 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 614 | err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 615 | if (err) { |
| 616 | if (err == -ENOENT) |
| 617 | goto free_next; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 618 | goto out; |
Jaegeuk Kim | 1ce86bf | 2014-10-15 10:24:34 -0700 | [diff] [blame] | 619 | } |
| 620 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 621 | count = ADDRS_PER_PAGE(dn.node_page, inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 622 | |
| 623 | count -= dn.ofs_in_node; |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 624 | f2fs_bug_on(sbi, count < 0); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 625 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 626 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 627 | f2fs_truncate_data_blocks_range(&dn, count); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 628 | free_from += count; |
| 629 | } |
| 630 | |
| 631 | f2fs_put_dnode(&dn); |
| 632 | free_next: |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 633 | err = f2fs_truncate_inode_blocks(inode, free_from); |
Jaegeuk Kim | 764d2c8 | 2014-11-11 11:01:01 -0800 | [diff] [blame] | 634 | out: |
| 635 | if (lock) |
| 636 | f2fs_unlock_op(sbi); |
Chao Yu | 09210c9 | 2016-05-05 19:13:03 +0800 | [diff] [blame] | 637 | free_partial: |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 638 | /* lastly zero out the first data page */ |
| 639 | if (!err) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 640 | err = truncate_partial_data_page(inode, from, truncate_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 641 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 642 | trace_f2fs_truncate_blocks_exit(inode, err); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 643 | return err; |
| 644 | } |
| 645 | |
Jaegeuk Kim | 9a449e9 | 2016-06-02 13:49:38 -0700 | [diff] [blame] | 646 | int f2fs_truncate(struct inode *inode) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 647 | { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 648 | int err; |
| 649 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 650 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
| 651 | return -EIO; |
| 652 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 653 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 654 | S_ISLNK(inode->i_mode))) |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 655 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 656 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 657 | trace_f2fs_truncate(inode); |
| 658 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 659 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 660 | if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) { |
| 661 | f2fs_show_injection_info(FAULT_TRUNCATE); |
| 662 | return -EIO; |
| 663 | } |
| 664 | #endif |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 665 | /* we should check inline_data size */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 666 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 667 | err = f2fs_convert_inline_inode(inode); |
| 668 | if (err) |
| 669 | return err; |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 670 | } |
| 671 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 672 | err = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 673 | if (err) |
| 674 | return err; |
| 675 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 676 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 677 | f2fs_mark_inode_dirty_sync(inode, false); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 678 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 679 | } |
| 680 | |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 681 | int f2fs_getattr(struct vfsmount *mnt, |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 682 | struct dentry *dentry, struct kstat *stat) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 683 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 684 | struct inode *inode = d_inode(dentry); |
Chao Yu | 71f8f04 | 2018-01-25 14:54:42 +0800 | [diff] [blame] | 685 | #if 0 |
| 686 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 687 | struct f2fs_inode *ri; |
| 688 | unsigned int flags; |
| 689 | |
| 690 | if (f2fs_has_extra_attr(inode) && |
| 691 | f2fs_sb_has_inode_crtime(inode->i_sb) && |
| 692 | F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { |
| 693 | stat->result_mask |= STATX_BTIME; |
| 694 | stat->btime.tv_sec = fi->i_crtime.tv_sec; |
| 695 | stat->btime.tv_nsec = fi->i_crtime.tv_nsec; |
| 696 | } |
| 697 | |
Chao Yu | a0bbb36 | 2018-04-08 11:25:53 +0800 | [diff] [blame] | 698 | flags = fi->i_flags & F2FS_FL_USER_VISIBLE; |
Chao Yu | 9bafde6 | 2018-04-03 15:08:17 +0800 | [diff] [blame] | 699 | if (flags & F2FS_APPEND_FL) |
Chao Yu | 71f8f04 | 2018-01-25 14:54:42 +0800 | [diff] [blame] | 700 | stat->attributes |= STATX_ATTR_APPEND; |
Chao Yu | 9bafde6 | 2018-04-03 15:08:17 +0800 | [diff] [blame] | 701 | if (flags & F2FS_COMPR_FL) |
Chao Yu | 71f8f04 | 2018-01-25 14:54:42 +0800 | [diff] [blame] | 702 | stat->attributes |= STATX_ATTR_COMPRESSED; |
| 703 | if (f2fs_encrypted_inode(inode)) |
| 704 | stat->attributes |= STATX_ATTR_ENCRYPTED; |
Chao Yu | 9bafde6 | 2018-04-03 15:08:17 +0800 | [diff] [blame] | 705 | if (flags & F2FS_IMMUTABLE_FL) |
Chao Yu | 71f8f04 | 2018-01-25 14:54:42 +0800 | [diff] [blame] | 706 | stat->attributes |= STATX_ATTR_IMMUTABLE; |
Chao Yu | 9bafde6 | 2018-04-03 15:08:17 +0800 | [diff] [blame] | 707 | if (flags & F2FS_NODUMP_FL) |
Chao Yu | 71f8f04 | 2018-01-25 14:54:42 +0800 | [diff] [blame] | 708 | stat->attributes |= STATX_ATTR_NODUMP; |
| 709 | |
| 710 | stat->attributes_mask |= (STATX_ATTR_APPEND | |
| 711 | STATX_ATTR_COMPRESSED | |
| 712 | STATX_ATTR_ENCRYPTED | |
| 713 | STATX_ATTR_IMMUTABLE | |
| 714 | STATX_ATTR_NODUMP); |
| 715 | #endif |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 716 | generic_fillattr(inode, stat); |
Jaegeuk Kim | ac5d4b42 | 2017-10-13 10:27:45 -0700 | [diff] [blame] | 717 | |
| 718 | /* we need to show initial sectors used for inline_data/dentries */ |
| 719 | if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || |
| 720 | f2fs_has_inline_dentry(inode)) |
| 721 | stat->blocks += (stat->size + 511) >> 9; |
| 722 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 723 | return 0; |
| 724 | } |
| 725 | |
| 726 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 727 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) |
| 728 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 729 | unsigned int ia_valid = attr->ia_valid; |
| 730 | |
| 731 | if (ia_valid & ATTR_UID) |
| 732 | inode->i_uid = attr->ia_uid; |
| 733 | if (ia_valid & ATTR_GID) |
| 734 | inode->i_gid = attr->ia_gid; |
| 735 | if (ia_valid & ATTR_ATIME) |
| 736 | inode->i_atime = timespec_trunc(attr->ia_atime, |
| 737 | inode->i_sb->s_time_gran); |
| 738 | if (ia_valid & ATTR_MTIME) |
| 739 | inode->i_mtime = timespec_trunc(attr->ia_mtime, |
| 740 | inode->i_sb->s_time_gran); |
| 741 | if (ia_valid & ATTR_CTIME) |
| 742 | inode->i_ctime = timespec_trunc(attr->ia_ctime, |
| 743 | inode->i_sb->s_time_gran); |
| 744 | if (ia_valid & ATTR_MODE) { |
| 745 | umode_t mode = attr->ia_mode; |
| 746 | |
| 747 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) |
| 748 | mode &= ~S_ISGID; |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 749 | set_acl_inode(inode, mode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 750 | } |
| 751 | } |
| 752 | #else |
| 753 | #define __setattr_copy setattr_copy |
| 754 | #endif |
| 755 | |
| 756 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) |
| 757 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 758 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 759 | int err; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 760 | bool size_changed = false; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 761 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 762 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
| 763 | return -EIO; |
| 764 | |
Jan Kara | 31051c8 | 2016-05-26 16:55:18 +0200 | [diff] [blame] | 765 | err = setattr_prepare(dentry, attr); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 766 | if (err) |
| 767 | return err; |
| 768 | |
Eric Biggers | 955e7f5 | 2017-11-29 12:35:32 -0800 | [diff] [blame] | 769 | err = fscrypt_prepare_setattr(dentry, attr); |
| 770 | if (err) |
| 771 | return err; |
| 772 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 773 | if (is_quota_modification(inode, attr)) { |
| 774 | err = dquot_initialize(inode); |
| 775 | if (err) |
| 776 | return err; |
| 777 | } |
| 778 | if ((attr->ia_valid & ATTR_UID && |
| 779 | !uid_eq(attr->ia_uid, inode->i_uid)) || |
| 780 | (attr->ia_valid & ATTR_GID && |
| 781 | !gid_eq(attr->ia_gid, inode->i_gid))) { |
| 782 | err = dquot_transfer(inode, attr); |
| 783 | if (err) |
| 784 | return err; |
| 785 | } |
| 786 | |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 787 | if (attr->ia_valid & ATTR_SIZE) { |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 788 | if (attr->ia_size <= i_size_read(inode)) { |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 789 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 790 | truncate_setsize(inode, attr->ia_size); |
Jaegeuk Kim | 9a449e9 | 2016-06-02 13:49:38 -0700 | [diff] [blame] | 791 | err = f2fs_truncate(inode); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 792 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 793 | if (err) |
| 794 | return err; |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 795 | } else { |
| 796 | /* |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 797 | * do not trim all blocks after i_size if target size is |
| 798 | * larger than i_size. |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 799 | */ |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 800 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 801 | truncate_setsize(inode, attr->ia_size); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 802 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 803 | |
| 804 | /* should convert inline inode here */ |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 805 | if (!f2fs_may_inline_data(inode)) { |
Chao Yu | 0cab80e | 2015-12-01 11:36:16 +0800 | [diff] [blame] | 806 | err = f2fs_convert_inline_inode(inode); |
| 807 | if (err) |
| 808 | return err; |
| 809 | } |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 810 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 811 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 812 | |
Chao Yu | 33fdebb | 2017-10-09 17:55:19 +0800 | [diff] [blame] | 813 | down_write(&F2FS_I(inode)->i_sem); |
| 814 | F2FS_I(inode)->last_disk_size = i_size_read(inode); |
| 815 | up_write(&F2FS_I(inode)->i_sem); |
| 816 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 817 | size_changed = true; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 818 | } |
| 819 | |
| 820 | __setattr_copy(inode, attr); |
| 821 | |
| 822 | if (attr->ia_valid & ATTR_MODE) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 823 | err = posix_acl_chmod(inode, f2fs_get_inode_mode(inode)); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 824 | if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { |
| 825 | inode->i_mode = F2FS_I(inode)->i_acl_mode; |
| 826 | clear_inode_flag(inode, FI_ACL_MODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 827 | } |
| 828 | } |
| 829 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 830 | /* file size may changed here */ |
| 831 | f2fs_mark_inode_dirty_sync(inode, size_changed); |
| 832 | |
| 833 | /* inode change will produce dirty node pages flushed by checkpoint */ |
| 834 | f2fs_balance_fs(F2FS_I_SB(inode), true); |
| 835 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 836 | return err; |
| 837 | } |
| 838 | |
| 839 | const struct inode_operations f2fs_file_inode_operations = { |
| 840 | .getattr = f2fs_getattr, |
| 841 | .setattr = f2fs_setattr, |
| 842 | .get_acl = f2fs_get_acl, |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 843 | .set_acl = f2fs_set_acl, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 844 | #ifdef CONFIG_F2FS_FS_XATTR |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 845 | .listxattr = f2fs_listxattr, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 846 | #endif |
Jaegeuk Kim | 9ab7013 | 2014-06-08 04:30:14 +0900 | [diff] [blame] | 847 | .fiemap = f2fs_fiemap, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 848 | }; |
| 849 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 850 | static int fill_zero(struct inode *inode, pgoff_t index, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 851 | loff_t start, loff_t len) |
| 852 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 853 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 854 | struct page *page; |
| 855 | |
| 856 | if (!len) |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 857 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 858 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 859 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | bd43df0 | 2013-01-25 18:33:41 +0900 | [diff] [blame] | 860 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 861 | f2fs_lock_op(sbi); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 862 | page = f2fs_get_new_data_page(inode, NULL, index, false); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 863 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 864 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 865 | if (IS_ERR(page)) |
| 866 | return PTR_ERR(page); |
| 867 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 868 | f2fs_wait_on_page_writeback(page, DATA, true); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 869 | zero_user(page, start, len); |
| 870 | set_page_dirty(page); |
| 871 | f2fs_put_page(page, 1); |
| 872 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 873 | } |
| 874 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 875 | int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 876 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 877 | int err; |
| 878 | |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 879 | while (pg_start < pg_end) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 880 | struct dnode_of_data dn; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 881 | pgoff_t end_offset, count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 882 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 883 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 884 | err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 885 | if (err) { |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 886 | if (err == -ENOENT) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 887 | pg_start = f2fs_get_next_page_offset(&dn, |
| 888 | pg_start); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 889 | continue; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 890 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 891 | return err; |
| 892 | } |
| 893 | |
Chao Yu | 81ca735 | 2016-01-26 15:39:35 +0800 | [diff] [blame] | 894 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 895 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
| 896 | |
| 897 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); |
| 898 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 899 | f2fs_truncate_data_blocks_range(&dn, count); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 900 | f2fs_put_dnode(&dn); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 901 | |
| 902 | pg_start += count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 903 | } |
| 904 | return 0; |
| 905 | } |
| 906 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 907 | 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] | 908 | { |
| 909 | pgoff_t pg_start, pg_end; |
| 910 | loff_t off_start, off_end; |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 911 | int ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 912 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 913 | ret = f2fs_convert_inline_inode(inode); |
| 914 | if (ret) |
| 915 | return ret; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 916 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 917 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 918 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 919 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 920 | off_start = offset & (PAGE_SIZE - 1); |
| 921 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 922 | |
| 923 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 924 | ret = fill_zero(inode, pg_start, off_start, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 925 | off_end - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 926 | if (ret) |
| 927 | return ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 928 | } else { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 929 | if (off_start) { |
| 930 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 931 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 932 | if (ret) |
| 933 | return ret; |
| 934 | } |
| 935 | if (off_end) { |
| 936 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 937 | if (ret) |
| 938 | return ret; |
| 939 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 940 | |
| 941 | if (pg_start < pg_end) { |
| 942 | struct address_space *mapping = inode->i_mapping; |
| 943 | loff_t blk_start, blk_end; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 944 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jason Hrycay | 1127a3d | 2013-04-08 20:16:44 -0500 | [diff] [blame] | 945 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 946 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 947 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 948 | blk_start = (loff_t)pg_start << PAGE_SHIFT; |
| 949 | blk_end = (loff_t)pg_end << PAGE_SHIFT; |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 950 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 951 | truncate_inode_pages_range(mapping, blk_start, |
| 952 | blk_end - 1); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 953 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 954 | f2fs_lock_op(sbi); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 955 | ret = f2fs_truncate_hole(inode, pg_start, pg_end); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 956 | f2fs_unlock_op(sbi); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 957 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 958 | } |
| 959 | } |
| 960 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 961 | return ret; |
| 962 | } |
| 963 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 964 | static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, |
| 965 | int *do_replace, pgoff_t off, pgoff_t len) |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 966 | { |
| 967 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 968 | struct dnode_of_data dn; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 969 | int ret, done, i; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 970 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 971 | next_dnode: |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 972 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 973 | ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 974 | if (ret && ret != -ENOENT) { |
| 975 | return ret; |
| 976 | } else if (ret == -ENOENT) { |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 977 | if (dn.max_level == 0) |
| 978 | return -ENOENT; |
| 979 | done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); |
| 980 | blkaddr += done; |
| 981 | do_replace += done; |
| 982 | goto next; |
| 983 | } |
| 984 | |
| 985 | done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - |
| 986 | dn.ofs_in_node, len); |
| 987 | 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] | 988 | *blkaddr = datablock_addr(dn.inode, |
| 989 | dn.node_page, dn.ofs_in_node); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 990 | if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) { |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 991 | |
| 992 | if (test_opt(sbi, LFS)) { |
| 993 | f2fs_put_dnode(&dn); |
| 994 | return -ENOTSUPP; |
| 995 | } |
| 996 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 997 | /* do not invalidate this block address */ |
Chao Yu | f28b343 | 2016-02-24 17:16:47 +0800 | [diff] [blame] | 998 | f2fs_update_data_blkaddr(&dn, NULL_ADDR); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 999 | *do_replace = 1; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1000 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1001 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1002 | f2fs_put_dnode(&dn); |
| 1003 | next: |
| 1004 | len -= done; |
| 1005 | off += done; |
| 1006 | if (len) |
| 1007 | goto next_dnode; |
| 1008 | return 0; |
| 1009 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1010 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1011 | static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, |
| 1012 | int *do_replace, pgoff_t off, int len) |
| 1013 | { |
| 1014 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1015 | struct dnode_of_data dn; |
| 1016 | int ret, i; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1017 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1018 | for (i = 0; i < len; i++, do_replace++, blkaddr++) { |
| 1019 | if (*do_replace == 0) |
| 1020 | continue; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1021 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1022 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1023 | ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1024 | if (ret) { |
| 1025 | dec_valid_block_count(sbi, inode, 1); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1026 | f2fs_invalidate_blocks(sbi, *blkaddr); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1027 | } else { |
| 1028 | f2fs_update_data_blkaddr(&dn, *blkaddr); |
Jaegeuk Kim | 36abef4 | 2016-06-03 19:29:38 -0700 | [diff] [blame] | 1029 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1030 | f2fs_put_dnode(&dn); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1031 | } |
| 1032 | return 0; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1033 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1034 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1035 | static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, |
| 1036 | block_t *blkaddr, int *do_replace, |
| 1037 | pgoff_t src, pgoff_t dst, pgoff_t len, bool full) |
| 1038 | { |
| 1039 | struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); |
| 1040 | pgoff_t i = 0; |
| 1041 | int ret; |
| 1042 | |
| 1043 | while (i < len) { |
| 1044 | if (blkaddr[i] == NULL_ADDR && !full) { |
| 1045 | i++; |
| 1046 | continue; |
| 1047 | } |
| 1048 | |
| 1049 | if (do_replace[i] || blkaddr[i] == NULL_ADDR) { |
| 1050 | struct dnode_of_data dn; |
| 1051 | struct node_info ni; |
| 1052 | size_t new_size; |
| 1053 | pgoff_t ilen; |
| 1054 | |
| 1055 | set_new_dnode(&dn, dst_inode, NULL, NULL, 0); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1056 | ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1057 | if (ret) |
| 1058 | return ret; |
| 1059 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1060 | f2fs_get_node_info(sbi, dn.nid, &ni); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1061 | ilen = min((pgoff_t) |
| 1062 | ADDRS_PER_PAGE(dn.node_page, dst_inode) - |
| 1063 | dn.ofs_in_node, len - i); |
| 1064 | do { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 1065 | dn.data_blkaddr = datablock_addr(dn.inode, |
| 1066 | dn.node_page, dn.ofs_in_node); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1067 | f2fs_truncate_data_blocks_range(&dn, 1); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1068 | |
| 1069 | if (do_replace[i]) { |
| 1070 | f2fs_i_blocks_write(src_inode, |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1071 | 1, false, false); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1072 | f2fs_i_blocks_write(dst_inode, |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1073 | 1, true, false); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1074 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, |
| 1075 | blkaddr[i], ni.version, true, false); |
| 1076 | |
| 1077 | do_replace[i] = 0; |
| 1078 | } |
| 1079 | dn.ofs_in_node++; |
| 1080 | i++; |
| 1081 | new_size = (dst + i) << PAGE_SHIFT; |
| 1082 | if (dst_inode->i_size < new_size) |
| 1083 | f2fs_i_size_write(dst_inode, new_size); |
Jaegeuk Kim | 027611e | 2016-11-23 10:51:17 -0800 | [diff] [blame] | 1084 | } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR)); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1085 | |
| 1086 | f2fs_put_dnode(&dn); |
| 1087 | } else { |
| 1088 | struct page *psrc, *pdst; |
| 1089 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1090 | psrc = f2fs_get_lock_data_page(src_inode, |
| 1091 | src + i, true); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1092 | if (IS_ERR(psrc)) |
| 1093 | return PTR_ERR(psrc); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1094 | pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i, |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1095 | true); |
| 1096 | if (IS_ERR(pdst)) { |
| 1097 | f2fs_put_page(psrc, 1); |
| 1098 | return PTR_ERR(pdst); |
| 1099 | } |
| 1100 | f2fs_copy_page(psrc, pdst); |
| 1101 | set_page_dirty(pdst); |
| 1102 | f2fs_put_page(pdst, 1); |
| 1103 | f2fs_put_page(psrc, 1); |
| 1104 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1105 | ret = f2fs_truncate_hole(src_inode, |
| 1106 | src + i, src + i + 1); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1107 | if (ret) |
| 1108 | return ret; |
| 1109 | i++; |
| 1110 | } |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1111 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1112 | return 0; |
| 1113 | } |
| 1114 | |
| 1115 | static int __exchange_data_block(struct inode *src_inode, |
| 1116 | struct inode *dst_inode, pgoff_t src, pgoff_t dst, |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1117 | pgoff_t len, bool full) |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1118 | { |
| 1119 | block_t *src_blkaddr; |
| 1120 | int *do_replace; |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1121 | pgoff_t olen; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1122 | int ret; |
| 1123 | |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1124 | while (len) { |
| 1125 | olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1126 | |
Chao Yu | ead5259 | 2017-11-30 19:28:18 +0800 | [diff] [blame] | 1127 | src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
| 1128 | sizeof(block_t) * olen, GFP_KERNEL); |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1129 | if (!src_blkaddr) |
| 1130 | return -ENOMEM; |
| 1131 | |
Chao Yu | ead5259 | 2017-11-30 19:28:18 +0800 | [diff] [blame] | 1132 | do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode), |
| 1133 | sizeof(int) * olen, GFP_KERNEL); |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1134 | if (!do_replace) { |
| 1135 | kvfree(src_blkaddr); |
| 1136 | return -ENOMEM; |
| 1137 | } |
| 1138 | |
| 1139 | ret = __read_out_blkaddrs(src_inode, src_blkaddr, |
| 1140 | do_replace, src, olen); |
| 1141 | if (ret) |
| 1142 | goto roll_back; |
| 1143 | |
| 1144 | ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, |
| 1145 | do_replace, src, dst, olen, full); |
| 1146 | if (ret) |
| 1147 | goto roll_back; |
| 1148 | |
| 1149 | src += olen; |
| 1150 | dst += olen; |
| 1151 | len -= olen; |
| 1152 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1153 | kvfree(src_blkaddr); |
Jaegeuk Kim | 363cad7 | 2016-07-16 21:59:22 -0700 | [diff] [blame] | 1154 | kvfree(do_replace); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1155 | } |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1156 | return 0; |
| 1157 | |
| 1158 | roll_back: |
Chao Yu | 48fa534 | 2018-05-28 23:47:19 +0800 | [diff] [blame] | 1159 | __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1160 | kvfree(src_blkaddr); |
| 1161 | kvfree(do_replace); |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1162 | return ret; |
| 1163 | } |
| 1164 | |
| 1165 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
| 1166 | { |
| 1167 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1168 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1169 | int ret; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1170 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1171 | f2fs_balance_fs(sbi, true); |
| 1172 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 5f281fa | 2016-07-12 11:07:52 -0700 | [diff] [blame] | 1173 | |
| 1174 | f2fs_drop_extent_tree(inode); |
| 1175 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1176 | ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); |
| 1177 | f2fs_unlock_op(sbi); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1178 | return ret; |
| 1179 | } |
| 1180 | |
| 1181 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) |
| 1182 | { |
| 1183 | pgoff_t pg_start, pg_end; |
| 1184 | loff_t new_size; |
| 1185 | int ret; |
| 1186 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1187 | if (offset + len >= i_size_read(inode)) |
| 1188 | return -EINVAL; |
| 1189 | |
| 1190 | /* collapse range should be aligned to block size of f2fs. */ |
| 1191 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 1192 | return -EINVAL; |
| 1193 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1194 | ret = f2fs_convert_inline_inode(inode); |
| 1195 | if (ret) |
| 1196 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 1197 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1198 | pg_start = offset >> PAGE_SHIFT; |
| 1199 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1200 | |
Chao Yu | 46accc9 | 2017-11-23 23:26:52 +0800 | [diff] [blame] | 1201 | /* avoid gc operation during block exchange */ |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 1202 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
Chao Yu | 46accc9 | 2017-11-23 23:26:52 +0800 | [diff] [blame] | 1203 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1204 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1205 | /* write out all dirty pages from offset */ |
| 1206 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1207 | if (ret) |
Chao Yu | 46accc9 | 2017-11-23 23:26:52 +0800 | [diff] [blame] | 1208 | goto out_unlock; |
Chao Yu | 5f3fdd2 | 2017-11-03 10:21:05 +0800 | [diff] [blame] | 1209 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1210 | truncate_pagecache(inode, offset); |
| 1211 | |
| 1212 | ret = f2fs_do_collapse(inode, pg_start, pg_end); |
| 1213 | if (ret) |
Chao Yu | 5f3fdd2 | 2017-11-03 10:21:05 +0800 | [diff] [blame] | 1214 | goto out_unlock; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1215 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1216 | /* write out all moved pages, if possible */ |
| 1217 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1218 | truncate_pagecache(inode, offset); |
| 1219 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1220 | new_size = i_size_read(inode) - len; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1221 | truncate_pagecache(inode, new_size); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1222 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1223 | ret = f2fs_truncate_blocks(inode, new_size, true); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1224 | if (!ret) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1225 | f2fs_i_size_write(inode, new_size); |
Chao Yu | 5f3fdd2 | 2017-11-03 10:21:05 +0800 | [diff] [blame] | 1226 | out_unlock: |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1227 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 1228 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1229 | return ret; |
| 1230 | } |
| 1231 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1232 | static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start, |
| 1233 | pgoff_t end) |
| 1234 | { |
| 1235 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
| 1236 | pgoff_t index = start; |
| 1237 | unsigned int ofs_in_node = dn->ofs_in_node; |
| 1238 | blkcnt_t count = 0; |
| 1239 | int ret; |
| 1240 | |
| 1241 | for (; index < end; index++, dn->ofs_in_node++) { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 1242 | if (datablock_addr(dn->inode, dn->node_page, |
| 1243 | dn->ofs_in_node) == NULL_ADDR) |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1244 | count++; |
| 1245 | } |
| 1246 | |
| 1247 | dn->ofs_in_node = ofs_in_node; |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1248 | ret = f2fs_reserve_new_blocks(dn, count); |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1249 | if (ret) |
| 1250 | return ret; |
| 1251 | |
| 1252 | dn->ofs_in_node = ofs_in_node; |
| 1253 | for (index = start; index < end; index++, dn->ofs_in_node++) { |
Chao Yu | fbcf931 | 2017-07-19 00:19:06 +0800 | [diff] [blame] | 1254 | dn->data_blkaddr = datablock_addr(dn->inode, |
| 1255 | dn->node_page, dn->ofs_in_node); |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1256 | /* |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1257 | * f2fs_reserve_new_blocks will not guarantee entire block |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1258 | * allocation. |
| 1259 | */ |
| 1260 | if (dn->data_blkaddr == NULL_ADDR) { |
| 1261 | ret = -ENOSPC; |
| 1262 | break; |
| 1263 | } |
| 1264 | if (dn->data_blkaddr != NEW_ADDR) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1265 | f2fs_invalidate_blocks(sbi, dn->data_blkaddr); |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1266 | dn->data_blkaddr = NEW_ADDR; |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1267 | f2fs_set_data_blkaddr(dn); |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1268 | } |
| 1269 | } |
| 1270 | |
| 1271 | f2fs_update_extent_cache_range(dn, start, 0, index - start); |
| 1272 | |
| 1273 | return ret; |
| 1274 | } |
| 1275 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1276 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
| 1277 | int mode) |
| 1278 | { |
| 1279 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1280 | struct address_space *mapping = inode->i_mapping; |
| 1281 | pgoff_t index, pg_start, pg_end; |
| 1282 | loff_t new_size = i_size_read(inode); |
| 1283 | loff_t off_start, off_end; |
| 1284 | int ret = 0; |
| 1285 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1286 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1287 | if (ret) |
| 1288 | return ret; |
| 1289 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1290 | ret = f2fs_convert_inline_inode(inode); |
| 1291 | if (ret) |
| 1292 | return ret; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1293 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1294 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1295 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
| 1296 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1297 | goto out_sem; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1298 | |
| 1299 | truncate_pagecache_range(inode, offset, offset + len - 1); |
| 1300 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1301 | pg_start = ((unsigned long long) offset) >> PAGE_SHIFT; |
| 1302 | pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1303 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1304 | off_start = offset & (PAGE_SIZE - 1); |
| 1305 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1306 | |
| 1307 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1308 | ret = fill_zero(inode, pg_start, off_start, |
| 1309 | off_end - off_start); |
| 1310 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1311 | goto out_sem; |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1312 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1313 | new_size = max_t(loff_t, new_size, offset + len); |
| 1314 | } else { |
| 1315 | if (off_start) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1316 | ret = fill_zero(inode, pg_start++, off_start, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1317 | PAGE_SIZE - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1318 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1319 | goto out_sem; |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1320 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1321 | new_size = max_t(loff_t, new_size, |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1322 | (loff_t)pg_start << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1323 | } |
| 1324 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1325 | for (index = pg_start; index < pg_end;) { |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1326 | struct dnode_of_data dn; |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1327 | unsigned int end_offset; |
| 1328 | pgoff_t end; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1329 | |
| 1330 | f2fs_lock_op(sbi); |
| 1331 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1332 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1333 | ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1334 | if (ret) { |
| 1335 | f2fs_unlock_op(sbi); |
| 1336 | goto out; |
| 1337 | } |
| 1338 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1339 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
| 1340 | end = min(pg_end, end_offset - dn.ofs_in_node + index); |
| 1341 | |
| 1342 | ret = f2fs_do_zero_range(&dn, index, end); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1343 | f2fs_put_dnode(&dn); |
| 1344 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1345 | |
| 1346 | f2fs_balance_fs(sbi, dn.node_changed); |
| 1347 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1348 | if (ret) |
| 1349 | goto out; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1350 | |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1351 | index = end; |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1352 | new_size = max_t(loff_t, new_size, |
Chao Yu | 6e96194 | 2016-05-09 19:56:31 +0800 | [diff] [blame] | 1353 | (loff_t)index << PAGE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1354 | } |
| 1355 | |
| 1356 | if (off_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1357 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 1358 | if (ret) |
| 1359 | goto out; |
| 1360 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1361 | new_size = max_t(loff_t, new_size, offset + len); |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | out: |
Chao Yu | 061839d | 2018-02-25 23:38:21 +0800 | [diff] [blame] | 1366 | if (new_size > i_size_read(inode)) { |
| 1367 | if (mode & FALLOC_FL_KEEP_SIZE) |
| 1368 | file_set_keep_isize(inode); |
| 1369 | else |
| 1370 | f2fs_i_size_write(inode, new_size); |
| 1371 | } |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1372 | out_sem: |
| 1373 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1374 | |
| 1375 | return ret; |
| 1376 | } |
| 1377 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1378 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
| 1379 | { |
| 1380 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1381 | pgoff_t nr, pg_start, pg_end, delta, idx; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1382 | loff_t new_size; |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1383 | int ret = 0; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1384 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1385 | new_size = i_size_read(inode) + len; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1386 | ret = inode_newsize_ok(inode, new_size); |
| 1387 | if (ret) |
| 1388 | return ret; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1389 | |
| 1390 | if (offset >= i_size_read(inode)) |
| 1391 | return -EINVAL; |
| 1392 | |
| 1393 | /* insert range should be aligned to block size of f2fs. */ |
| 1394 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 1395 | return -EINVAL; |
| 1396 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 1397 | ret = f2fs_convert_inline_inode(inode); |
| 1398 | if (ret) |
| 1399 | return ret; |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 1400 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1401 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1402 | |
Chao Yu | 46accc9 | 2017-11-23 23:26:52 +0800 | [diff] [blame] | 1403 | /* avoid gc operation during block exchange */ |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 1404 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
Chao Yu | 46accc9 | 2017-11-23 23:26:52 +0800 | [diff] [blame] | 1405 | |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1406 | down_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1407 | ret = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1408 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1409 | goto out; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1410 | |
| 1411 | /* write out all dirty pages from offset */ |
| 1412 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1413 | if (ret) |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1414 | goto out; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1415 | |
| 1416 | truncate_pagecache(inode, offset); |
| 1417 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1418 | pg_start = offset >> PAGE_SHIFT; |
| 1419 | pg_end = (offset + len) >> PAGE_SHIFT; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1420 | delta = pg_end - pg_start; |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1421 | idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1422 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1423 | while (!ret && idx > pg_start) { |
| 1424 | nr = idx - pg_start; |
| 1425 | if (nr > delta) |
| 1426 | nr = delta; |
| 1427 | idx -= nr; |
| 1428 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1429 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 5f281fa | 2016-07-12 11:07:52 -0700 | [diff] [blame] | 1430 | f2fs_drop_extent_tree(inode); |
| 1431 | |
Jaegeuk Kim | 0a2aa8f | 2016-07-08 17:42:21 -0700 | [diff] [blame] | 1432 | ret = __exchange_data_block(inode, inode, idx, |
| 1433 | idx + delta, nr, false); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1434 | f2fs_unlock_op(sbi); |
| 1435 | } |
| 1436 | |
Jaegeuk Kim | 6e2c64a | 2015-10-07 12:28:41 -0700 | [diff] [blame] | 1437 | /* write out all moved pages, if possible */ |
| 1438 | filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1439 | truncate_pagecache(inode, offset); |
| 1440 | |
| 1441 | if (!ret) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 1442 | f2fs_i_size_write(inode, new_size); |
Qiuyang Sun | 7b23ea1 | 2017-05-18 11:06:45 +0800 | [diff] [blame] | 1443 | out: |
| 1444 | up_write(&F2FS_I(inode)->i_mmap_sem); |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 1445 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1446 | return ret; |
| 1447 | } |
| 1448 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1449 | static int expand_inode_data(struct inode *inode, loff_t offset, |
| 1450 | loff_t len, int mode) |
| 1451 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1452 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Hyunchul Lee | 1a9d6a9 | 2017-11-28 09:23:00 +0900 | [diff] [blame] | 1453 | struct f2fs_map_blocks map = { .m_next_pgofs = NULL, |
Chao Yu | 6bce963 | 2018-01-11 14:42:30 +0800 | [diff] [blame] | 1454 | .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE }; |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1455 | pgoff_t pg_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1456 | loff_t new_size = i_size_read(inode); |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1457 | loff_t off_end; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1458 | int err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1459 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1460 | err = inode_newsize_ok(inode, (len + offset)); |
| 1461 | if (err) |
| 1462 | return err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1463 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1464 | err = f2fs_convert_inline_inode(inode); |
| 1465 | if (err) |
| 1466 | return err; |
Jaegeuk Kim | 9e09fc8 | 2013-12-27 12:28:59 +0900 | [diff] [blame] | 1467 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 1468 | f2fs_balance_fs(sbi, true); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 1469 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1470 | pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT; |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 1471 | off_end = (offset + len) & (PAGE_SIZE - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1472 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1473 | map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT; |
| 1474 | map.m_len = pg_end - map.m_lblk; |
| 1475 | if (off_end) |
| 1476 | map.m_len++; |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1477 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1478 | err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO); |
| 1479 | if (err) { |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1480 | pgoff_t last_off; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1481 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1482 | if (!map.m_len) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1483 | return err; |
Jaegeuk Kim | 98397ff | 2014-06-13 13:07:31 +0900 | [diff] [blame] | 1484 | |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1485 | last_off = map.m_lblk + map.m_len - 1; |
| 1486 | |
| 1487 | /* update new size to the failed position */ |
youngjun yoo | 6285d97 | 2018-05-30 04:34:58 +0900 | [diff] [blame] | 1488 | new_size = (last_off == pg_end) ? offset + len : |
Jaegeuk Kim | e12dd7b | 2016-05-06 15:30:38 -0700 | [diff] [blame] | 1489 | (loff_t)(last_off + 1) << PAGE_SHIFT; |
| 1490 | } else { |
| 1491 | new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1492 | } |
| 1493 | |
Chao Yu | bed6cff | 2017-11-05 21:53:30 +0800 | [diff] [blame] | 1494 | if (new_size > i_size_read(inode)) { |
| 1495 | if (mode & FALLOC_FL_KEEP_SIZE) |
| 1496 | file_set_keep_isize(inode); |
| 1497 | else |
| 1498 | f2fs_i_size_write(inode, new_size); |
| 1499 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1500 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1501 | return err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1502 | } |
| 1503 | |
| 1504 | static long f2fs_fallocate(struct file *file, int mode, |
| 1505 | loff_t offset, loff_t len) |
| 1506 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1507 | struct inode *inode = file_inode(file); |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1508 | long ret = 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1509 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 1510 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
| 1511 | return -EIO; |
| 1512 | |
Chao Yu | c998012 | 2015-09-11 14:39:02 +0800 | [diff] [blame] | 1513 | /* f2fs only support ->fallocate for regular file */ |
| 1514 | if (!S_ISREG(inode->i_mode)) |
| 1515 | return -EINVAL; |
| 1516 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1517 | if (f2fs_encrypted_inode(inode) && |
| 1518 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1519 | return -EOPNOTSUPP; |
| 1520 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1521 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1522 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
| 1523 | FALLOC_FL_INSERT_RANGE)) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1524 | return -EOPNOTSUPP; |
| 1525 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1526 | inode_lock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1527 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1528 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
| 1529 | if (offset >= inode->i_size) |
| 1530 | goto out; |
| 1531 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 1532 | ret = punch_hole(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1533 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
| 1534 | ret = f2fs_collapse_range(inode, offset, len); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1535 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
| 1536 | ret = f2fs_zero_range(inode, offset, len, mode); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1537 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
| 1538 | ret = f2fs_insert_range(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1539 | } else { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1540 | ret = expand_inode_data(inode, offset, len, mode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1541 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1542 | |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1543 | if (!ret) { |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 1544 | inode->i_mtime = inode->i_ctime = current_time(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1545 | f2fs_mark_inode_dirty_sync(inode, false); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1546 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1547 | } |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1548 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1549 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1550 | inode_unlock(inode); |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1551 | |
Namjae Jeon | c01e285 | 2013-04-23 17:00:52 +0900 | [diff] [blame] | 1552 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1553 | return ret; |
| 1554 | } |
| 1555 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1556 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
| 1557 | { |
Jaegeuk Kim | de5307e | 2016-04-11 11:51:51 -0700 | [diff] [blame] | 1558 | /* |
| 1559 | * f2fs_relase_file is called at every close calls. So we should |
| 1560 | * not drop any inmemory pages by close called by other process. |
| 1561 | */ |
| 1562 | if (!(filp->f_mode & FMODE_WRITE) || |
| 1563 | atomic_read(&inode->i_writecount) != 1) |
| 1564 | return 0; |
| 1565 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1566 | /* some remained atomic pages should discarded */ |
| 1567 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1568 | f2fs_drop_inmem_pages(inode); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1569 | if (f2fs_is_volatile_file(inode)) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1570 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1571 | stat_dec_volatile_write(inode); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1572 | set_inode_flag(inode, FI_DROP_CACHE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1573 | filemap_fdatawrite(inode->i_mapping); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1574 | clear_inode_flag(inode, FI_DROP_CACHE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1575 | } |
| 1576 | return 0; |
| 1577 | } |
| 1578 | |
Jaegeuk Kim | a778c4c | 2017-07-24 19:46:29 -0700 | [diff] [blame] | 1579 | static int f2fs_file_flush(struct file *file, fl_owner_t id) |
| 1580 | { |
| 1581 | struct inode *inode = file_inode(file); |
| 1582 | |
| 1583 | /* |
| 1584 | * If the process doing a transaction is crashed, we should do |
| 1585 | * roll-back. Otherwise, other reader/write can see corrupted database |
| 1586 | * until all the writers close its file. Since this should be done |
| 1587 | * before dropping file lock, it needs to do in ->flush. |
| 1588 | */ |
| 1589 | if (f2fs_is_atomic_file(inode) && |
| 1590 | F2FS_I(inode)->inmem_task == current) |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1591 | f2fs_drop_inmem_pages(inode); |
Jaegeuk Kim | a778c4c | 2017-07-24 19:46:29 -0700 | [diff] [blame] | 1592 | return 0; |
| 1593 | } |
| 1594 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1595 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1596 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1597 | struct inode *inode = file_inode(filp); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1598 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Chao Yu | 03a2243 | 2018-04-08 11:27:14 +0800 | [diff] [blame] | 1599 | unsigned int flags = fi->i_flags; |
| 1600 | |
| 1601 | if (file_is_encrypt(inode)) |
| 1602 | flags |= F2FS_ENCRYPT_FL; |
| 1603 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) |
| 1604 | flags |= F2FS_INLINE_DATA_FL; |
| 1605 | |
| 1606 | flags &= F2FS_FL_USER_VISIBLE; |
| 1607 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1608 | return put_user(flags, (int __user *)arg); |
| 1609 | } |
| 1610 | |
| 1611 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
| 1612 | { |
| 1613 | struct inode *inode = file_inode(filp); |
| 1614 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Sheng Yong | 6949422 | 2016-08-23 20:10:47 +0800 | [diff] [blame] | 1615 | unsigned int flags; |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1616 | unsigned int oldflags; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1617 | int ret; |
| 1618 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1619 | if (!inode_owner_or_capable(inode)) |
| 1620 | return -EACCES; |
| 1621 | |
| 1622 | if (get_user(flags, (int __user *)arg)) |
| 1623 | return -EFAULT; |
| 1624 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1625 | ret = mnt_want_write_file(filp); |
| 1626 | if (ret) |
| 1627 | return ret; |
| 1628 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1629 | inode_lock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1630 | |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1631 | /* Is it quota file? Do not allow user to mess with it */ |
| 1632 | if (IS_NOQUOTA(inode)) { |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1633 | ret = -EPERM; |
| 1634 | goto unlock_out; |
| 1635 | } |
| 1636 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1637 | flags = f2fs_mask_flags(inode->i_mode, flags); |
| 1638 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1639 | oldflags = fi->i_flags; |
| 1640 | |
Chao Yu | 9bafde6 | 2018-04-03 15:08:17 +0800 | [diff] [blame] | 1641 | if ((flags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) { |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1642 | if (!capable(CAP_LINUX_IMMUTABLE)) { |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1643 | ret = -EPERM; |
Luis Henriques | 1a3bf340 | 2017-07-11 17:30:33 +0100 | [diff] [blame] | 1644 | goto unlock_out; |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1645 | } |
| 1646 | } |
| 1647 | |
Chao Yu | a0bbb36 | 2018-04-08 11:25:53 +0800 | [diff] [blame] | 1648 | flags = flags & (F2FS_FL_USER_MODIFIABLE); |
| 1649 | flags |= oldflags & ~(F2FS_FL_USER_MODIFIABLE); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1650 | fi->i_flags = flags; |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1651 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 1652 | inode->i_ctime = current_time(inode); |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 1653 | f2fs_set_inode_flags(inode); |
Jaegeuk Kim | f31e1ae | 2017-05-16 13:20:16 -0700 | [diff] [blame] | 1654 | f2fs_mark_inode_dirty_sync(inode, false); |
Chao Yu | 09c3a72 | 2017-07-09 00:13:07 +0800 | [diff] [blame] | 1655 | unlock_out: |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1656 | inode_unlock(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1657 | mnt_drop_write_file(filp); |
| 1658 | return ret; |
| 1659 | } |
| 1660 | |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1661 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
| 1662 | { |
| 1663 | struct inode *inode = file_inode(filp); |
| 1664 | |
| 1665 | return put_user(inode->i_generation, (int __user *)arg); |
| 1666 | } |
| 1667 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1668 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
| 1669 | { |
| 1670 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1671 | int ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1672 | |
| 1673 | if (!inode_owner_or_capable(inode)) |
| 1674 | return -EACCES; |
| 1675 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1676 | if (!S_ISREG(inode->i_mode)) |
| 1677 | return -EINVAL; |
| 1678 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1679 | ret = mnt_want_write_file(filp); |
| 1680 | if (ret) |
| 1681 | return ret; |
| 1682 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1683 | inode_lock(inode); |
| 1684 | |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 1685 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
Chao Yu | 72823f4 | 2018-04-17 17:51:28 +0800 | [diff] [blame] | 1686 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1687 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1688 | goto out; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1689 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1690 | ret = f2fs_convert_inline_inode(inode); |
| 1691 | if (ret) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1692 | goto out; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1693 | |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1694 | if (!get_dirty_pages(inode)) |
Yunlei He | 5bdfc7e | 2018-04-18 11:06:39 +0800 | [diff] [blame] | 1695 | goto skip_flush; |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1696 | |
| 1697 | f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING, |
Jaegeuk Kim | a43e1c4 | 2016-12-02 15:11:32 -0800 | [diff] [blame] | 1698 | "Unexpected flush for atomic writes: ino=%lu, npages=%u", |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1699 | inode->i_ino, get_dirty_pages(inode)); |
| 1700 | ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); |
Yunlei He | 5bdfc7e | 2018-04-18 11:06:39 +0800 | [diff] [blame] | 1701 | if (ret) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1702 | goto out; |
Yunlei He | 5bdfc7e | 2018-04-18 11:06:39 +0800 | [diff] [blame] | 1703 | skip_flush: |
Yunlei He | 5bdfc7e | 2018-04-18 11:06:39 +0800 | [diff] [blame] | 1704 | set_inode_flag(inode, FI_ATOMIC_FILE); |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 1705 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
Yunlei He | 5bdfc7e | 2018-04-18 11:06:39 +0800 | [diff] [blame] | 1706 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1707 | |
Jaegeuk Kim | a778c4c | 2017-07-24 19:46:29 -0700 | [diff] [blame] | 1708 | F2FS_I(inode)->inmem_task = current; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1709 | stat_inc_atomic_write(inode); |
| 1710 | stat_update_max_atomic_write(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1711 | out: |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 1712 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1713 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1714 | mnt_drop_write_file(filp); |
Jaegeuk Kim | c27753d | 2016-04-12 14:36:11 -0700 | [diff] [blame] | 1715 | return ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1716 | } |
| 1717 | |
| 1718 | static int f2fs_ioc_commit_atomic_write(struct file *filp) |
| 1719 | { |
| 1720 | struct inode *inode = file_inode(filp); |
| 1721 | int ret; |
| 1722 | |
| 1723 | if (!inode_owner_or_capable(inode)) |
| 1724 | return -EACCES; |
| 1725 | |
| 1726 | ret = mnt_want_write_file(filp); |
| 1727 | if (ret) |
| 1728 | return ret; |
| 1729 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1730 | inode_lock(inode); |
| 1731 | |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 1732 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
Chao Yu | f4f1022 | 2018-02-27 22:45:24 +0800 | [diff] [blame] | 1733 | |
Chao Yu | 2f903ef | 2018-04-18 17:45:02 +0800 | [diff] [blame] | 1734 | if (f2fs_is_volatile_file(inode)) { |
| 1735 | ret = -EINVAL; |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1736 | goto err_out; |
Chao Yu | 2f903ef | 2018-04-18 17:45:02 +0800 | [diff] [blame] | 1737 | } |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1738 | |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1739 | if (f2fs_is_atomic_file(inode)) { |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1740 | ret = f2fs_commit_inmem_pages(inode); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1741 | if (ret) |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1742 | goto err_out; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1743 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1744 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
| 1745 | if (!ret) { |
| 1746 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 1747 | F2FS_I(inode)->i_gc_failures[GC_FAILURE_ATOMIC] = 0; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1748 | stat_dec_atomic_write(inode); |
| 1749 | } |
| 1750 | } else { |
Chao Yu | 70d7be5 | 2017-08-23 18:23:25 +0800 | [diff] [blame] | 1751 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1752 | } |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1753 | err_out: |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 1754 | if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { |
| 1755 | clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
| 1756 | ret = -EINVAL; |
| 1757 | } |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 1758 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1759 | inode_unlock(inode); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1760 | mnt_drop_write_file(filp); |
| 1761 | return ret; |
| 1762 | } |
| 1763 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1764 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
| 1765 | { |
| 1766 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1767 | int ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1768 | |
| 1769 | if (!inode_owner_or_capable(inode)) |
| 1770 | return -EACCES; |
| 1771 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1772 | if (!S_ISREG(inode->i_mode)) |
| 1773 | return -EINVAL; |
| 1774 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1775 | ret = mnt_want_write_file(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1776 | if (ret) |
| 1777 | return ret; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 1778 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1779 | inode_lock(inode); |
| 1780 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1781 | if (f2fs_is_volatile_file(inode)) |
| 1782 | goto out; |
| 1783 | |
| 1784 | ret = f2fs_convert_inline_inode(inode); |
| 1785 | if (ret) |
| 1786 | goto out; |
| 1787 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1788 | stat_inc_volatile_write(inode); |
| 1789 | stat_update_max_volatile_write(inode); |
| 1790 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1791 | set_inode_flag(inode, FI_VOLATILE_FILE); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1792 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1793 | out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1794 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1795 | mnt_drop_write_file(filp); |
| 1796 | return ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1797 | } |
| 1798 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1799 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
| 1800 | { |
| 1801 | struct inode *inode = file_inode(filp); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1802 | int ret; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1803 | |
| 1804 | if (!inode_owner_or_capable(inode)) |
| 1805 | return -EACCES; |
| 1806 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1807 | ret = mnt_want_write_file(filp); |
| 1808 | if (ret) |
| 1809 | return ret; |
| 1810 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1811 | inode_lock(inode); |
| 1812 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1813 | if (!f2fs_is_volatile_file(inode)) |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1814 | goto out; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1815 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1816 | if (!f2fs_is_first_block_written(inode)) { |
| 1817 | ret = truncate_partial_data_page(inode, 0, true); |
| 1818 | goto out; |
| 1819 | } |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 1820 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1821 | ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
| 1822 | out: |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1823 | inode_unlock(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1824 | mnt_drop_write_file(filp); |
| 1825 | return ret; |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1826 | } |
| 1827 | |
| 1828 | static int f2fs_ioc_abort_volatile_write(struct file *filp) |
| 1829 | { |
| 1830 | struct inode *inode = file_inode(filp); |
| 1831 | int ret; |
| 1832 | |
| 1833 | if (!inode_owner_or_capable(inode)) |
| 1834 | return -EACCES; |
| 1835 | |
| 1836 | ret = mnt_want_write_file(filp); |
| 1837 | if (ret) |
| 1838 | return ret; |
| 1839 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1840 | inode_lock(inode); |
| 1841 | |
Jaegeuk Kim | 26dc3d4 | 2016-04-11 13:15:10 -0700 | [diff] [blame] | 1842 | if (f2fs_is_atomic_file(inode)) |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1843 | f2fs_drop_inmem_pages(inode); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1844 | if (f2fs_is_volatile_file(inode)) { |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 1845 | clear_inode_flag(inode, FI_VOLATILE_FILE); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1846 | stat_dec_volatile_write(inode); |
Jaegeuk Kim | 608514d | 2016-04-15 09:43:17 -0700 | [diff] [blame] | 1847 | ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
Jaegeuk Kim | 732d564 | 2015-12-29 15:46:33 -0800 | [diff] [blame] | 1848 | } |
Jaegeuk Kim | de6a8ec | 2015-06-08 17:51:10 -0700 | [diff] [blame] | 1849 | |
Chao Yu | 0fac558 | 2016-05-09 19:56:33 +0800 | [diff] [blame] | 1850 | inode_unlock(inode); |
| 1851 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1852 | mnt_drop_write_file(filp); |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1853 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1854 | return ret; |
| 1855 | } |
| 1856 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1857 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
| 1858 | { |
| 1859 | struct inode *inode = file_inode(filp); |
| 1860 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1861 | struct super_block *sb = sbi->sb; |
| 1862 | __u32 in; |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1863 | int ret; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1864 | |
| 1865 | if (!capable(CAP_SYS_ADMIN)) |
| 1866 | return -EPERM; |
| 1867 | |
| 1868 | if (get_user(in, (__u32 __user *)arg)) |
| 1869 | return -EFAULT; |
| 1870 | |
Sahitya Tummala | 664de59 | 2018-05-18 11:51:52 +0530 | [diff] [blame] | 1871 | if (in != F2FS_GOING_DOWN_FULLSYNC) { |
| 1872 | ret = mnt_want_write_file(filp); |
| 1873 | if (ret) |
| 1874 | return ret; |
| 1875 | } |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1876 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1877 | switch (in) { |
| 1878 | case F2FS_GOING_DOWN_FULLSYNC: |
| 1879 | sb = freeze_bdev(sb->s_bdev); |
Chao Yu | 62a91a5 | 2018-01-17 22:28:52 +0800 | [diff] [blame] | 1880 | if (IS_ERR(sb)) { |
| 1881 | ret = PTR_ERR(sb); |
| 1882 | goto out; |
| 1883 | } |
| 1884 | if (sb) { |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1885 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1886 | thaw_bdev(sb->s_bdev, sb); |
| 1887 | } |
| 1888 | break; |
| 1889 | case F2FS_GOING_DOWN_METASYNC: |
| 1890 | /* do checkpoint only */ |
Chao Yu | 62a91a5 | 2018-01-17 22:28:52 +0800 | [diff] [blame] | 1891 | ret = f2fs_sync_fs(sb, 1); |
| 1892 | if (ret) |
| 1893 | goto out; |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1894 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1895 | break; |
| 1896 | case F2FS_GOING_DOWN_NOSYNC: |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1897 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1898 | break; |
Jaegeuk Kim | c912a82 | 2015-10-07 09:46:37 -0700 | [diff] [blame] | 1899 | case F2FS_GOING_DOWN_METAFLUSH: |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1900 | f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO); |
Jaegeuk Kim | 38f91ca | 2016-05-18 14:07:56 -0700 | [diff] [blame] | 1901 | f2fs_stop_checkpoint(sbi, false); |
Jaegeuk Kim | c912a82 | 2015-10-07 09:46:37 -0700 | [diff] [blame] | 1902 | break; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1903 | default: |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1904 | ret = -EINVAL; |
| 1905 | goto out; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1906 | } |
Chao Yu | 1a3b004 | 2018-01-18 17:23:29 +0800 | [diff] [blame] | 1907 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1908 | f2fs_stop_gc_thread(sbi); |
| 1909 | f2fs_stop_discard_thread(sbi); |
Chao Yu | 1a3b004 | 2018-01-18 17:23:29 +0800 | [diff] [blame] | 1910 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 1911 | f2fs_drop_discard_cmd(sbi); |
Chao Yu | 1a3b004 | 2018-01-18 17:23:29 +0800 | [diff] [blame] | 1912 | clear_opt(sbi, DISCARD); |
| 1913 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1914 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1915 | out: |
Sahitya Tummala | 664de59 | 2018-05-18 11:51:52 +0530 | [diff] [blame] | 1916 | if (in != F2FS_GOING_DOWN_FULLSYNC) |
| 1917 | mnt_drop_write_file(filp); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1918 | return ret; |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1919 | } |
| 1920 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1921 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
| 1922 | { |
| 1923 | struct inode *inode = file_inode(filp); |
| 1924 | struct super_block *sb = inode->i_sb; |
| 1925 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
| 1926 | struct fstrim_range range; |
| 1927 | int ret; |
| 1928 | |
| 1929 | if (!capable(CAP_SYS_ADMIN)) |
| 1930 | return -EPERM; |
| 1931 | |
| 1932 | if (!blk_queue_discard(q)) |
| 1933 | return -EOPNOTSUPP; |
| 1934 | |
| 1935 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
| 1936 | sizeof(range))) |
| 1937 | return -EFAULT; |
| 1938 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1939 | ret = mnt_want_write_file(filp); |
| 1940 | if (ret) |
| 1941 | return ret; |
| 1942 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1943 | range.minlen = max((unsigned int)range.minlen, |
| 1944 | q->limits.discard_granularity); |
| 1945 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1946 | mnt_drop_write_file(filp); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1947 | if (ret < 0) |
| 1948 | return ret; |
| 1949 | |
| 1950 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
| 1951 | sizeof(range))) |
| 1952 | return -EFAULT; |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1953 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1954 | return 0; |
| 1955 | } |
| 1956 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1957 | static bool uuid_is_nonzero(__u8 u[16]) |
| 1958 | { |
| 1959 | int i; |
| 1960 | |
| 1961 | for (i = 0; i < 16; i++) |
| 1962 | if (u[i]) |
| 1963 | return true; |
| 1964 | return false; |
| 1965 | } |
| 1966 | |
| 1967 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) |
| 1968 | { |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1969 | struct inode *inode = file_inode(filp); |
| 1970 | |
Sheng Yong | 770611e | 2018-02-06 12:31:17 +0800 | [diff] [blame] | 1971 | if (!f2fs_sb_has_encrypt(inode->i_sb)) |
Chao Yu | 5b2b7f7 | 2017-11-14 19:28:42 +0800 | [diff] [blame] | 1972 | return -EOPNOTSUPP; |
| 1973 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 1974 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 1975 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1976 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1977 | } |
| 1978 | |
| 1979 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) |
| 1980 | { |
Sheng Yong | 770611e | 2018-02-06 12:31:17 +0800 | [diff] [blame] | 1981 | if (!f2fs_sb_has_encrypt(file_inode(filp)->i_sb)) |
Chao Yu | 5b2b7f7 | 2017-11-14 19:28:42 +0800 | [diff] [blame] | 1982 | return -EOPNOTSUPP; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 1983 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1984 | } |
| 1985 | |
| 1986 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) |
| 1987 | { |
| 1988 | struct inode *inode = file_inode(filp); |
| 1989 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1990 | int err; |
| 1991 | |
Sheng Yong | 770611e | 2018-02-06 12:31:17 +0800 | [diff] [blame] | 1992 | if (!f2fs_sb_has_encrypt(inode->i_sb)) |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1993 | return -EOPNOTSUPP; |
| 1994 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1995 | err = mnt_want_write_file(filp); |
| 1996 | if (err) |
| 1997 | return err; |
| 1998 | |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 1999 | down_write(&sbi->sb_lock); |
Chao Yu | 4951ebc | 2018-02-11 22:53:20 +0800 | [diff] [blame] | 2000 | |
| 2001 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) |
| 2002 | goto got_it; |
| 2003 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 2004 | /* update superblock with uuid */ |
| 2005 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); |
| 2006 | |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 2007 | err = f2fs_commit_super(sbi, false); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 2008 | if (err) { |
| 2009 | /* undo new data */ |
| 2010 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); |
Chao Yu | 4951ebc | 2018-02-11 22:53:20 +0800 | [diff] [blame] | 2011 | goto out_err; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 2012 | } |
| 2013 | got_it: |
| 2014 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, |
| 2015 | 16)) |
Chao Yu | 4951ebc | 2018-02-11 22:53:20 +0800 | [diff] [blame] | 2016 | err = -EFAULT; |
| 2017 | out_err: |
Chao Yu | 1e72cb2 | 2018-02-26 22:04:13 +0800 | [diff] [blame] | 2018 | up_write(&sbi->sb_lock); |
Chao Yu | 4951ebc | 2018-02-11 22:53:20 +0800 | [diff] [blame] | 2019 | mnt_drop_write_file(filp); |
| 2020 | return err; |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 2021 | } |
| 2022 | |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2023 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
| 2024 | { |
| 2025 | struct inode *inode = file_inode(filp); |
| 2026 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 2027 | __u32 sync; |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 2028 | int ret; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2029 | |
| 2030 | if (!capable(CAP_SYS_ADMIN)) |
| 2031 | return -EPERM; |
| 2032 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 2033 | if (get_user(sync, (__u32 __user *)arg)) |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2034 | return -EFAULT; |
| 2035 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 2036 | if (f2fs_readonly(sbi->sb)) |
| 2037 | return -EROFS; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2038 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 2039 | ret = mnt_want_write_file(filp); |
| 2040 | if (ret) |
| 2041 | return ret; |
| 2042 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 2043 | if (!sync) { |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 2044 | if (!mutex_trylock(&sbi->gc_mutex)) { |
| 2045 | ret = -EBUSY; |
| 2046 | goto out; |
| 2047 | } |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 2048 | } else { |
| 2049 | mutex_lock(&sbi->gc_mutex); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2050 | } |
| 2051 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2052 | ret = f2fs_gc(sbi, sync, true, NULL_SEGNO); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 2053 | out: |
| 2054 | mnt_drop_write_file(filp); |
| 2055 | return ret; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2056 | } |
| 2057 | |
Jaegeuk Kim | 0bb5306 | 2017-06-15 16:44:42 -0700 | [diff] [blame] | 2058 | static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg) |
| 2059 | { |
| 2060 | struct inode *inode = file_inode(filp); |
| 2061 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 2062 | struct f2fs_gc_range range; |
| 2063 | u64 end; |
| 2064 | int ret; |
| 2065 | |
| 2066 | if (!capable(CAP_SYS_ADMIN)) |
| 2067 | return -EPERM; |
| 2068 | |
| 2069 | if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg, |
| 2070 | sizeof(range))) |
| 2071 | return -EFAULT; |
| 2072 | |
| 2073 | if (f2fs_readonly(sbi->sb)) |
| 2074 | return -EROFS; |
| 2075 | |
Yunlei He | 48698e4 | 2018-04-24 11:40:30 +0800 | [diff] [blame] | 2076 | end = range.start + range.len; |
| 2077 | if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi)) { |
| 2078 | return -EINVAL; |
| 2079 | } |
| 2080 | |
Jaegeuk Kim | 0bb5306 | 2017-06-15 16:44:42 -0700 | [diff] [blame] | 2081 | ret = mnt_want_write_file(filp); |
| 2082 | if (ret) |
| 2083 | return ret; |
| 2084 | |
Jaegeuk Kim | 0bb5306 | 2017-06-15 16:44:42 -0700 | [diff] [blame] | 2085 | do_more: |
| 2086 | if (!range.sync) { |
| 2087 | if (!mutex_trylock(&sbi->gc_mutex)) { |
| 2088 | ret = -EBUSY; |
| 2089 | goto out; |
| 2090 | } |
| 2091 | } else { |
| 2092 | mutex_lock(&sbi->gc_mutex); |
| 2093 | } |
| 2094 | |
| 2095 | ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start)); |
| 2096 | range.start += sbi->blocks_per_seg; |
| 2097 | if (range.start <= end) |
| 2098 | goto do_more; |
| 2099 | out: |
| 2100 | mnt_drop_write_file(filp); |
| 2101 | return ret; |
| 2102 | } |
| 2103 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 2104 | static int f2fs_ioc_f2fs_write_checkpoint(struct file *filp, unsigned long arg) |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 2105 | { |
| 2106 | struct inode *inode = file_inode(filp); |
| 2107 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 2108 | int ret; |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 2109 | |
| 2110 | if (!capable(CAP_SYS_ADMIN)) |
| 2111 | return -EPERM; |
| 2112 | |
| 2113 | if (f2fs_readonly(sbi->sb)) |
| 2114 | return -EROFS; |
| 2115 | |
Chao Yu | 7fb17fe | 2016-05-09 19:56:32 +0800 | [diff] [blame] | 2116 | ret = mnt_want_write_file(filp); |
| 2117 | if (ret) |
| 2118 | return ret; |
| 2119 | |
| 2120 | ret = f2fs_sync_fs(sbi->sb, 1); |
| 2121 | |
| 2122 | mnt_drop_write_file(filp); |
| 2123 | return ret; |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 2124 | } |
| 2125 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2126 | static int f2fs_defragment_range(struct f2fs_sb_info *sbi, |
| 2127 | struct file *filp, |
| 2128 | struct f2fs_defragment *range) |
| 2129 | { |
| 2130 | struct inode *inode = file_inode(filp); |
Chao Yu | fd21442 | 2018-01-10 18:18:52 +0800 | [diff] [blame] | 2131 | struct f2fs_map_blocks map = { .m_next_extent = NULL, |
| 2132 | .m_seg_type = NO_CHECK_TYPE }; |
youngjun yoo | 6285d97 | 2018-05-30 04:34:58 +0900 | [diff] [blame] | 2133 | struct extent_info ei = {0, 0, 0}; |
Chao Yu | fd21442 | 2018-01-10 18:18:52 +0800 | [diff] [blame] | 2134 | pgoff_t pg_start, pg_end, next_pgofs; |
Chao Yu | 3519e3f | 2015-12-01 11:56:52 +0800 | [diff] [blame] | 2135 | unsigned int blk_per_seg = sbi->blocks_per_seg; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2136 | unsigned int total = 0, sec_num; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2137 | block_t blk_end = 0; |
| 2138 | bool fragmented = false; |
| 2139 | int err; |
| 2140 | |
| 2141 | /* if in-place-update policy is enabled, don't waste time here */ |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 2142 | if (f2fs_should_update_inplace(inode, NULL)) |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2143 | return -EINVAL; |
| 2144 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 2145 | pg_start = range->start >> PAGE_SHIFT; |
| 2146 | pg_end = (range->start + range->len) >> PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2147 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 2148 | f2fs_balance_fs(sbi, true); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2149 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 2150 | inode_lock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2151 | |
| 2152 | /* writeback all dirty pages in the range */ |
| 2153 | err = filemap_write_and_wait_range(inode->i_mapping, range->start, |
Fan Li | d8fe4f0 | 2015-12-14 13:34:00 +0800 | [diff] [blame] | 2154 | range->start + range->len - 1); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2155 | if (err) |
| 2156 | goto out; |
| 2157 | |
| 2158 | /* |
| 2159 | * lookup mapping info in extent cache, skip defragmenting if physical |
| 2160 | * block addresses are continuous. |
| 2161 | */ |
| 2162 | if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) { |
| 2163 | if (ei.fofs + ei.len >= pg_end) |
| 2164 | goto out; |
| 2165 | } |
| 2166 | |
| 2167 | map.m_lblk = pg_start; |
Chao Yu | fd21442 | 2018-01-10 18:18:52 +0800 | [diff] [blame] | 2168 | map.m_next_pgofs = &next_pgofs; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2169 | |
| 2170 | /* |
| 2171 | * lookup mapping info in dnode page cache, skip defragmenting if all |
| 2172 | * physical block addresses are continuous even if there are hole(s) |
| 2173 | * in logical blocks. |
| 2174 | */ |
| 2175 | while (map.m_lblk < pg_end) { |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 2176 | map.m_len = pg_end - map.m_lblk; |
Qiuyang Sun | 9afa159 | 2017-08-09 17:27:30 +0800 | [diff] [blame] | 2177 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2178 | if (err) |
| 2179 | goto out; |
| 2180 | |
| 2181 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
Chao Yu | fd21442 | 2018-01-10 18:18:52 +0800 | [diff] [blame] | 2182 | map.m_lblk = next_pgofs; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2183 | continue; |
| 2184 | } |
| 2185 | |
Chao Yu | 4992a3c | 2018-01-10 18:18:51 +0800 | [diff] [blame] | 2186 | if (blk_end && blk_end != map.m_pblk) |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2187 | fragmented = true; |
Chao Yu | 4992a3c | 2018-01-10 18:18:51 +0800 | [diff] [blame] | 2188 | |
| 2189 | /* record total count of block that we're going to move */ |
| 2190 | total += map.m_len; |
| 2191 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2192 | blk_end = map.m_pblk + map.m_len; |
| 2193 | |
| 2194 | map.m_lblk += map.m_len; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2195 | } |
| 2196 | |
| 2197 | if (!fragmented) |
| 2198 | goto out; |
| 2199 | |
Chao Yu | 4992a3c | 2018-01-10 18:18:51 +0800 | [diff] [blame] | 2200 | sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2201 | |
| 2202 | /* |
| 2203 | * make sure there are enough free section for LFS allocation, this can |
| 2204 | * avoid defragment running in SSR mode when free section are allocated |
| 2205 | * intensively |
| 2206 | */ |
Jaegeuk Kim | 7f3037a | 2016-09-01 12:02:51 -0700 | [diff] [blame] | 2207 | if (has_not_enough_free_secs(sbi, 0, sec_num)) { |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2208 | err = -EAGAIN; |
| 2209 | goto out; |
| 2210 | } |
| 2211 | |
Chao Yu | 4992a3c | 2018-01-10 18:18:51 +0800 | [diff] [blame] | 2212 | map.m_lblk = pg_start; |
| 2213 | map.m_len = pg_end - pg_start; |
| 2214 | total = 0; |
| 2215 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2216 | while (map.m_lblk < pg_end) { |
| 2217 | pgoff_t idx; |
| 2218 | int cnt = 0; |
| 2219 | |
| 2220 | do_map: |
Fan Li | a1c1e9b | 2015-12-15 17:02:41 +0800 | [diff] [blame] | 2221 | map.m_len = pg_end - map.m_lblk; |
Qiuyang Sun | 9afa159 | 2017-08-09 17:27:30 +0800 | [diff] [blame] | 2222 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2223 | if (err) |
| 2224 | goto clear_out; |
| 2225 | |
| 2226 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
Chao Yu | fd21442 | 2018-01-10 18:18:52 +0800 | [diff] [blame] | 2227 | map.m_lblk = next_pgofs; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2228 | continue; |
| 2229 | } |
| 2230 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2231 | set_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2232 | |
| 2233 | idx = map.m_lblk; |
| 2234 | while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { |
| 2235 | struct page *page; |
| 2236 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 2237 | page = f2fs_get_lock_data_page(inode, idx, true); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2238 | if (IS_ERR(page)) { |
| 2239 | err = PTR_ERR(page); |
| 2240 | goto clear_out; |
| 2241 | } |
| 2242 | |
| 2243 | set_page_dirty(page); |
| 2244 | f2fs_put_page(page, 1); |
| 2245 | |
| 2246 | idx++; |
| 2247 | cnt++; |
| 2248 | total++; |
| 2249 | } |
| 2250 | |
| 2251 | map.m_lblk = idx; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2252 | |
| 2253 | if (idx < pg_end && cnt < blk_per_seg) |
| 2254 | goto do_map; |
| 2255 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2256 | clear_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2257 | |
| 2258 | err = filemap_fdatawrite(inode->i_mapping); |
| 2259 | if (err) |
| 2260 | goto out; |
| 2261 | } |
| 2262 | clear_out: |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 2263 | clear_inode_flag(inode, FI_DO_DEFRAG); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2264 | out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 2265 | inode_unlock(inode); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2266 | if (!err) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 2267 | range->len = (u64)total << PAGE_SHIFT; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2268 | return err; |
| 2269 | } |
| 2270 | |
| 2271 | static int f2fs_ioc_defragment(struct file *filp, unsigned long arg) |
| 2272 | { |
| 2273 | struct inode *inode = file_inode(filp); |
| 2274 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 2275 | struct f2fs_defragment range; |
| 2276 | int err; |
| 2277 | |
| 2278 | if (!capable(CAP_SYS_ADMIN)) |
| 2279 | return -EPERM; |
| 2280 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2281 | if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode)) |
| 2282 | return -EINVAL; |
| 2283 | |
| 2284 | if (f2fs_readonly(sbi->sb)) |
| 2285 | return -EROFS; |
| 2286 | |
| 2287 | if (copy_from_user(&range, (struct f2fs_defragment __user *)arg, |
| 2288 | sizeof(range))) |
| 2289 | return -EFAULT; |
| 2290 | |
| 2291 | /* verify alignment of offset & size */ |
| 2292 | if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1)) |
| 2293 | return -EINVAL; |
| 2294 | |
| 2295 | if (unlikely((range.start + range.len) >> PAGE_SHIFT > |
| 2296 | sbi->max_file_blocks)) |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2297 | return -EINVAL; |
| 2298 | |
| 2299 | err = mnt_want_write_file(filp); |
| 2300 | if (err) |
| 2301 | return err; |
| 2302 | |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2303 | err = f2fs_defragment_range(sbi, filp, &range); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2304 | mnt_drop_write_file(filp); |
| 2305 | |
Jaegeuk Kim | d0239e1 | 2016-01-08 16:57:48 -0800 | [diff] [blame] | 2306 | f2fs_update_time(sbi, REQ_TIME); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2307 | if (err < 0) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2308 | return err; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2309 | |
| 2310 | if (copy_to_user((struct f2fs_defragment __user *)arg, &range, |
| 2311 | sizeof(range))) |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2312 | return -EFAULT; |
| 2313 | |
| 2314 | return 0; |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2315 | } |
| 2316 | |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2317 | static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, |
| 2318 | struct file *file_out, loff_t pos_out, size_t len) |
| 2319 | { |
| 2320 | struct inode *src = file_inode(file_in); |
| 2321 | struct inode *dst = file_inode(file_out); |
| 2322 | struct f2fs_sb_info *sbi = F2FS_I_SB(src); |
| 2323 | size_t olen = len, dst_max_i_size = 0; |
| 2324 | size_t dst_osize; |
| 2325 | int ret; |
| 2326 | |
| 2327 | if (file_in->f_path.mnt != file_out->f_path.mnt || |
| 2328 | src->i_sb != dst->i_sb) |
| 2329 | return -EXDEV; |
| 2330 | |
| 2331 | if (unlikely(f2fs_readonly(src->i_sb))) |
| 2332 | return -EROFS; |
| 2333 | |
Chao Yu | fe8494b | 2016-08-04 20:13:02 +0800 | [diff] [blame] | 2334 | if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode)) |
| 2335 | return -EINVAL; |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2336 | |
| 2337 | if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) |
| 2338 | return -EOPNOTSUPP; |
| 2339 | |
Fan Li | d95fd91 | 2016-09-13 11:35:42 +0800 | [diff] [blame] | 2340 | if (src == dst) { |
| 2341 | if (pos_in == pos_out) |
| 2342 | return 0; |
| 2343 | if (pos_out > pos_in && pos_out < pos_in + len) |
| 2344 | return -EINVAL; |
| 2345 | } |
| 2346 | |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2347 | inode_lock(src); |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 2348 | down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); |
Chao Yu | 20a3d61 | 2016-08-04 20:13:03 +0800 | [diff] [blame] | 2349 | if (src != dst) { |
Chao Yu | 5f3fdd2 | 2017-11-03 10:21:05 +0800 | [diff] [blame] | 2350 | ret = -EBUSY; |
| 2351 | if (!inode_trylock(dst)) |
| 2352 | goto out; |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 2353 | if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) { |
Chao Yu | 5f3fdd2 | 2017-11-03 10:21:05 +0800 | [diff] [blame] | 2354 | inode_unlock(dst); |
Chao Yu | 20a3d61 | 2016-08-04 20:13:03 +0800 | [diff] [blame] | 2355 | goto out; |
| 2356 | } |
| 2357 | } |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2358 | |
| 2359 | ret = -EINVAL; |
| 2360 | if (pos_in + len > src->i_size || pos_in + len < pos_in) |
| 2361 | goto out_unlock; |
| 2362 | if (len == 0) |
| 2363 | olen = len = src->i_size - pos_in; |
| 2364 | if (pos_in + len == src->i_size) |
| 2365 | len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; |
| 2366 | if (len == 0) { |
| 2367 | ret = 0; |
| 2368 | goto out_unlock; |
| 2369 | } |
| 2370 | |
| 2371 | dst_osize = dst->i_size; |
| 2372 | if (pos_out + olen > dst->i_size) |
| 2373 | dst_max_i_size = pos_out + olen; |
| 2374 | |
| 2375 | /* verify the end result is block aligned */ |
| 2376 | if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || |
| 2377 | !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || |
| 2378 | !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) |
| 2379 | goto out_unlock; |
| 2380 | |
| 2381 | ret = f2fs_convert_inline_inode(src); |
| 2382 | if (ret) |
| 2383 | goto out_unlock; |
| 2384 | |
| 2385 | ret = f2fs_convert_inline_inode(dst); |
| 2386 | if (ret) |
| 2387 | goto out_unlock; |
| 2388 | |
| 2389 | /* write out all dirty pages from offset */ |
| 2390 | ret = filemap_write_and_wait_range(src->i_mapping, |
| 2391 | pos_in, pos_in + len); |
| 2392 | if (ret) |
| 2393 | goto out_unlock; |
| 2394 | |
| 2395 | ret = filemap_write_and_wait_range(dst->i_mapping, |
| 2396 | pos_out, pos_out + len); |
| 2397 | if (ret) |
| 2398 | goto out_unlock; |
| 2399 | |
| 2400 | f2fs_balance_fs(sbi, true); |
| 2401 | f2fs_lock_op(sbi); |
Fan Li | 61e4da1 | 2016-09-10 11:19:37 +0800 | [diff] [blame] | 2402 | ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS, |
| 2403 | pos_out >> F2FS_BLKSIZE_BITS, |
| 2404 | len >> F2FS_BLKSIZE_BITS, false); |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2405 | |
| 2406 | if (!ret) { |
| 2407 | if (dst_max_i_size) |
| 2408 | f2fs_i_size_write(dst, dst_max_i_size); |
| 2409 | else if (dst_osize != dst->i_size) |
| 2410 | f2fs_i_size_write(dst, dst_osize); |
| 2411 | } |
| 2412 | f2fs_unlock_op(sbi); |
| 2413 | out_unlock: |
Chao Yu | 5f3fdd2 | 2017-11-03 10:21:05 +0800 | [diff] [blame] | 2414 | if (src != dst) { |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 2415 | up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]); |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2416 | inode_unlock(dst); |
Chao Yu | 5f3fdd2 | 2017-11-03 10:21:05 +0800 | [diff] [blame] | 2417 | } |
Chao Yu | 20a3d61 | 2016-08-04 20:13:03 +0800 | [diff] [blame] | 2418 | out: |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 2419 | up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2420 | inode_unlock(src); |
| 2421 | return ret; |
| 2422 | } |
| 2423 | |
| 2424 | static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) |
| 2425 | { |
| 2426 | struct f2fs_move_range range; |
| 2427 | struct fd dst; |
| 2428 | int err; |
| 2429 | |
| 2430 | if (!(filp->f_mode & FMODE_READ) || |
| 2431 | !(filp->f_mode & FMODE_WRITE)) |
| 2432 | return -EBADF; |
| 2433 | |
| 2434 | if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, |
| 2435 | sizeof(range))) |
| 2436 | return -EFAULT; |
| 2437 | |
| 2438 | dst = fdget(range.dst_fd); |
| 2439 | if (!dst.file) |
| 2440 | return -EBADF; |
| 2441 | |
| 2442 | if (!(dst.file->f_mode & FMODE_WRITE)) { |
| 2443 | err = -EBADF; |
| 2444 | goto err_out; |
| 2445 | } |
| 2446 | |
| 2447 | err = mnt_want_write_file(filp); |
| 2448 | if (err) |
| 2449 | goto err_out; |
| 2450 | |
| 2451 | err = f2fs_move_file_range(filp, range.pos_in, dst.file, |
| 2452 | range.pos_out, range.len); |
| 2453 | |
| 2454 | mnt_drop_write_file(filp); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2455 | if (err) |
| 2456 | goto err_out; |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2457 | |
| 2458 | if (copy_to_user((struct f2fs_move_range __user *)arg, |
| 2459 | &range, sizeof(range))) |
| 2460 | err = -EFAULT; |
| 2461 | err_out: |
| 2462 | fdput(dst); |
| 2463 | return err; |
| 2464 | } |
| 2465 | |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2466 | static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) |
| 2467 | { |
| 2468 | struct inode *inode = file_inode(filp); |
| 2469 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 2470 | struct sit_info *sm = SIT_I(sbi); |
| 2471 | unsigned int start_segno = 0, end_segno = 0; |
| 2472 | unsigned int dev_start_segno = 0, dev_end_segno = 0; |
| 2473 | struct f2fs_flush_device range; |
| 2474 | int ret; |
| 2475 | |
| 2476 | if (!capable(CAP_SYS_ADMIN)) |
| 2477 | return -EPERM; |
| 2478 | |
| 2479 | if (f2fs_readonly(sbi->sb)) |
| 2480 | return -EROFS; |
| 2481 | |
| 2482 | if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg, |
| 2483 | sizeof(range))) |
| 2484 | return -EFAULT; |
| 2485 | |
| 2486 | if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num || |
| 2487 | sbi->segs_per_sec != 1) { |
| 2488 | f2fs_msg(sbi->sb, KERN_WARNING, |
| 2489 | "Can't flush %u in %d for segs_per_sec %u != 1\n", |
| 2490 | range.dev_num, sbi->s_ndevs, |
| 2491 | sbi->segs_per_sec); |
| 2492 | return -EINVAL; |
| 2493 | } |
| 2494 | |
| 2495 | ret = mnt_want_write_file(filp); |
| 2496 | if (ret) |
| 2497 | return ret; |
| 2498 | |
| 2499 | if (range.dev_num != 0) |
| 2500 | dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk); |
| 2501 | dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk); |
| 2502 | |
| 2503 | start_segno = sm->last_victim[FLUSH_DEVICE]; |
| 2504 | if (start_segno < dev_start_segno || start_segno >= dev_end_segno) |
| 2505 | start_segno = dev_start_segno; |
| 2506 | end_segno = min(start_segno + range.segments, dev_end_segno); |
| 2507 | |
| 2508 | while (start_segno < end_segno) { |
| 2509 | if (!mutex_trylock(&sbi->gc_mutex)) { |
| 2510 | ret = -EBUSY; |
| 2511 | goto out; |
| 2512 | } |
| 2513 | sm->last_victim[GC_CB] = end_segno + 1; |
| 2514 | sm->last_victim[GC_GREEDY] = end_segno + 1; |
| 2515 | sm->last_victim[ALLOC_NEXT] = end_segno + 1; |
| 2516 | ret = f2fs_gc(sbi, true, true, start_segno); |
| 2517 | if (ret == -EAGAIN) |
| 2518 | ret = 0; |
| 2519 | else if (ret < 0) |
| 2520 | break; |
| 2521 | start_segno++; |
| 2522 | } |
| 2523 | out: |
| 2524 | mnt_drop_write_file(filp); |
| 2525 | return ret; |
| 2526 | } |
| 2527 | |
Jaegeuk Kim | 82925bb | 2017-07-21 12:58:59 -0700 | [diff] [blame] | 2528 | static int f2fs_ioc_get_features(struct file *filp, unsigned long arg) |
| 2529 | { |
| 2530 | struct inode *inode = file_inode(filp); |
| 2531 | u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature); |
| 2532 | |
| 2533 | /* Must validate to set it with SQLite behavior in Android. */ |
| 2534 | sb_feature |= F2FS_FEATURE_ATOMIC_WRITE; |
| 2535 | |
| 2536 | return put_user(sb_feature, (u32 __user *)arg); |
| 2537 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2538 | |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2539 | int f2fs_pin_file_control(struct inode *inode, bool inc) |
| 2540 | { |
| 2541 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 2542 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 2543 | |
| 2544 | /* Use i_gc_failures for normal file as a risk signal. */ |
| 2545 | if (inc) |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 2546 | f2fs_i_gc_failures_write(inode, |
| 2547 | fi->i_gc_failures[GC_FAILURE_PIN] + 1); |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2548 | |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 2549 | if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) { |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2550 | f2fs_msg(sbi->sb, KERN_WARNING, |
| 2551 | "%s: Enable GC = ino %lx after %x GC trials\n", |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 2552 | __func__, inode->i_ino, |
| 2553 | fi->i_gc_failures[GC_FAILURE_PIN]); |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2554 | clear_inode_flag(inode, FI_PIN_FILE); |
| 2555 | return -EAGAIN; |
| 2556 | } |
| 2557 | return 0; |
| 2558 | } |
| 2559 | |
| 2560 | static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg) |
| 2561 | { |
| 2562 | struct inode *inode = file_inode(filp); |
| 2563 | __u32 pin; |
| 2564 | int ret = 0; |
| 2565 | |
| 2566 | if (!inode_owner_or_capable(inode)) |
| 2567 | return -EACCES; |
| 2568 | |
| 2569 | if (get_user(pin, (__u32 __user *)arg)) |
| 2570 | return -EFAULT; |
| 2571 | |
| 2572 | if (!S_ISREG(inode->i_mode)) |
| 2573 | return -EINVAL; |
| 2574 | |
| 2575 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) |
| 2576 | return -EROFS; |
| 2577 | |
| 2578 | ret = mnt_want_write_file(filp); |
| 2579 | if (ret) |
| 2580 | return ret; |
| 2581 | |
| 2582 | inode_lock(inode); |
| 2583 | |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 2584 | if (f2fs_should_update_outplace(inode, NULL)) { |
Chao Yu | 66356ee | 2018-01-17 16:31:38 +0800 | [diff] [blame] | 2585 | ret = -EINVAL; |
| 2586 | goto out; |
| 2587 | } |
| 2588 | |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2589 | if (!pin) { |
| 2590 | clear_inode_flag(inode, FI_PIN_FILE); |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 2591 | F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = 1; |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2592 | goto done; |
| 2593 | } |
| 2594 | |
| 2595 | if (f2fs_pin_file_control(inode, false)) { |
| 2596 | ret = -EAGAIN; |
| 2597 | goto out; |
| 2598 | } |
| 2599 | ret = f2fs_convert_inline_inode(inode); |
| 2600 | if (ret) |
| 2601 | goto out; |
| 2602 | |
| 2603 | set_inode_flag(inode, FI_PIN_FILE); |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 2604 | ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2605 | done: |
| 2606 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
| 2607 | out: |
| 2608 | inode_unlock(inode); |
| 2609 | mnt_drop_write_file(filp); |
| 2610 | return ret; |
| 2611 | } |
| 2612 | |
| 2613 | static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg) |
| 2614 | { |
| 2615 | struct inode *inode = file_inode(filp); |
| 2616 | __u32 pin = 0; |
| 2617 | |
| 2618 | if (is_inode_flag_set(inode, FI_PIN_FILE)) |
Chao Yu | caf10c6 | 2018-05-07 20:28:54 +0800 | [diff] [blame] | 2619 | pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]; |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2620 | return put_user(pin, (u32 __user *)arg); |
| 2621 | } |
| 2622 | |
Chao Yu | 6bce963 | 2018-01-11 14:42:30 +0800 | [diff] [blame] | 2623 | int f2fs_precache_extents(struct inode *inode) |
| 2624 | { |
| 2625 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 2626 | struct f2fs_map_blocks map; |
| 2627 | pgoff_t m_next_extent; |
| 2628 | loff_t end; |
| 2629 | int err; |
| 2630 | |
| 2631 | if (is_inode_flag_set(inode, FI_NO_EXTENT)) |
| 2632 | return -EOPNOTSUPP; |
| 2633 | |
| 2634 | map.m_lblk = 0; |
| 2635 | map.m_next_pgofs = NULL; |
| 2636 | map.m_next_extent = &m_next_extent; |
| 2637 | map.m_seg_type = NO_CHECK_TYPE; |
| 2638 | end = F2FS_I_SB(inode)->max_file_blocks; |
| 2639 | |
| 2640 | while (map.m_lblk < end) { |
| 2641 | map.m_len = end - map.m_lblk; |
| 2642 | |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 2643 | down_write(&fi->i_gc_rwsem[WRITE]); |
Chao Yu | 6bce963 | 2018-01-11 14:42:30 +0800 | [diff] [blame] | 2644 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); |
Chao Yu | f6bd7d4 | 2018-04-24 10:55:28 +0800 | [diff] [blame] | 2645 | up_write(&fi->i_gc_rwsem[WRITE]); |
Chao Yu | 6bce963 | 2018-01-11 14:42:30 +0800 | [diff] [blame] | 2646 | if (err) |
| 2647 | return err; |
| 2648 | |
| 2649 | map.m_lblk = m_next_extent; |
| 2650 | } |
| 2651 | |
| 2652 | return err; |
| 2653 | } |
| 2654 | |
| 2655 | static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg) |
| 2656 | { |
| 2657 | return f2fs_precache_extents(file_inode(filp)); |
| 2658 | } |
| 2659 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2660 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
| 2661 | { |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 2662 | if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp))))) |
| 2663 | return -EIO; |
| 2664 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2665 | switch (cmd) { |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 2666 | case F2FS_IOC_GETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2667 | return f2fs_ioc_getflags(filp, arg); |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 2668 | case F2FS_IOC_SETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2669 | return f2fs_ioc_setflags(filp, arg); |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 2670 | case F2FS_IOC_GETVERSION: |
| 2671 | return f2fs_ioc_getversion(filp, arg); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 2672 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 2673 | return f2fs_ioc_start_atomic_write(filp); |
| 2674 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 2675 | return f2fs_ioc_commit_atomic_write(filp); |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 2676 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 2677 | return f2fs_ioc_start_volatile_write(filp); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 2678 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 2679 | return f2fs_ioc_release_volatile_write(filp); |
| 2680 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 2681 | return f2fs_ioc_abort_volatile_write(filp); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 2682 | case F2FS_IOC_SHUTDOWN: |
| 2683 | return f2fs_ioc_shutdown(filp, arg); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 2684 | case FITRIM: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 2685 | return f2fs_ioc_fitrim(filp, arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 2686 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 2687 | return f2fs_ioc_set_encryption_policy(filp, arg); |
| 2688 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 2689 | return f2fs_ioc_get_encryption_policy(filp, arg); |
| 2690 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 2691 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 2692 | case F2FS_IOC_GARBAGE_COLLECT: |
| 2693 | return f2fs_ioc_gc(filp, arg); |
Jaegeuk Kim | 0bb5306 | 2017-06-15 16:44:42 -0700 | [diff] [blame] | 2694 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
| 2695 | return f2fs_ioc_gc_range(filp, arg); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame] | 2696 | case F2FS_IOC_WRITE_CHECKPOINT: |
Chao Yu | 6b4d6a8 | 2018-05-30 00:20:41 +0800 | [diff] [blame] | 2697 | return f2fs_ioc_f2fs_write_checkpoint(filp, arg); |
Chao Yu | d323d00 | 2015-10-27 09:53:45 +0800 | [diff] [blame] | 2698 | case F2FS_IOC_DEFRAGMENT: |
| 2699 | return f2fs_ioc_defragment(filp, arg); |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2700 | case F2FS_IOC_MOVE_RANGE: |
| 2701 | return f2fs_ioc_move_range(filp, arg); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2702 | case F2FS_IOC_FLUSH_DEVICE: |
| 2703 | return f2fs_ioc_flush_device(filp, arg); |
Jaegeuk Kim | 82925bb | 2017-07-21 12:58:59 -0700 | [diff] [blame] | 2704 | case F2FS_IOC_GET_FEATURES: |
| 2705 | return f2fs_ioc_get_features(filp, arg); |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2706 | case F2FS_IOC_GET_PIN_FILE: |
| 2707 | return f2fs_ioc_get_pin_file(filp, arg); |
| 2708 | case F2FS_IOC_SET_PIN_FILE: |
| 2709 | return f2fs_ioc_set_pin_file(filp, arg); |
Chao Yu | 6bce963 | 2018-01-11 14:42:30 +0800 | [diff] [blame] | 2710 | case F2FS_IOC_PRECACHE_EXTENTS: |
| 2711 | return f2fs_ioc_precache_extents(filp, arg); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2712 | default: |
| 2713 | return -ENOTTY; |
| 2714 | } |
| 2715 | } |
| 2716 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2717 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
| 2718 | { |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2719 | struct file *file = iocb->ki_filp; |
| 2720 | struct inode *inode = file_inode(file); |
| 2721 | ssize_t ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2722 | |
Jaegeuk Kim | 6663422 | 2017-10-23 23:48:49 +0200 | [diff] [blame] | 2723 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) |
| 2724 | return -EIO; |
| 2725 | |
Hyunchul Lee | 355d234 | 2018-03-08 19:34:38 +0900 | [diff] [blame] | 2726 | if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT)) |
| 2727 | return -EINVAL; |
| 2728 | |
| 2729 | if (!inode_trylock(inode)) { |
| 2730 | if (iocb->ki_flags & IOCB_NOWAIT) |
| 2731 | return -EAGAIN; |
| 2732 | inode_lock(inode); |
| 2733 | } |
| 2734 | |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2735 | ret = generic_write_checks(iocb, from); |
| 2736 | if (ret > 0) { |
Jaegeuk Kim | a4fa11c | 2018-03-30 17:58:13 -0700 | [diff] [blame] | 2737 | bool preallocated = false; |
| 2738 | size_t target_size = 0; |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2739 | int err; |
| 2740 | |
| 2741 | if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
| 2742 | set_inode_flag(inode, FI_NO_PREALLOC); |
| 2743 | |
Hyunchul Lee | 355d234 | 2018-03-08 19:34:38 +0900 | [diff] [blame] | 2744 | if ((iocb->ki_flags & IOCB_NOWAIT) && |
| 2745 | (iocb->ki_flags & IOCB_DIRECT)) { |
| 2746 | if (!f2fs_overwrite_io(inode, iocb->ki_pos, |
| 2747 | iov_iter_count(from)) || |
| 2748 | f2fs_has_inline_data(inode) || |
| 2749 | f2fs_force_buffered_io(inode, WRITE)) { |
Yunlei He | 707f7ae | 2018-04-24 11:40:19 +0800 | [diff] [blame] | 2750 | clear_inode_flag(inode, |
| 2751 | FI_NO_PREALLOC); |
Hyunchul Lee | 355d234 | 2018-03-08 19:34:38 +0900 | [diff] [blame] | 2752 | inode_unlock(inode); |
| 2753 | return -EAGAIN; |
| 2754 | } |
| 2755 | |
| 2756 | } else { |
Jaegeuk Kim | a4fa11c | 2018-03-30 17:58:13 -0700 | [diff] [blame] | 2757 | preallocated = true; |
| 2758 | target_size = iocb->ki_pos + iov_iter_count(from); |
| 2759 | |
Hyunchul Lee | 355d234 | 2018-03-08 19:34:38 +0900 | [diff] [blame] | 2760 | err = f2fs_preallocate_blocks(iocb, from); |
| 2761 | if (err) { |
| 2762 | clear_inode_flag(inode, FI_NO_PREALLOC); |
| 2763 | inode_unlock(inode); |
| 2764 | return err; |
| 2765 | } |
Jaegeuk Kim | 9dfa1ba | 2016-07-13 19:33:19 -0700 | [diff] [blame] | 2766 | } |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2767 | ret = __generic_file_write_iter(iocb, from); |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2768 | clear_inode_flag(inode, FI_NO_PREALLOC); |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 2769 | |
Jaegeuk Kim | a4fa11c | 2018-03-30 17:58:13 -0700 | [diff] [blame] | 2770 | /* if we couldn't write data, we should deallocate blocks. */ |
| 2771 | if (preallocated && i_size_read(inode) < target_size) |
| 2772 | f2fs_truncate(inode); |
| 2773 | |
Chao Yu | c0fe488 | 2017-08-02 23:21:48 +0800 | [diff] [blame] | 2774 | if (ret > 0) |
| 2775 | f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2776 | } |
| 2777 | inode_unlock(inode); |
| 2778 | |
Christoph Hellwig | e259221 | 2016-04-07 08:52:01 -0700 | [diff] [blame] | 2779 | if (ret > 0) |
| 2780 | ret = generic_write_sync(iocb, ret); |
Jaegeuk Kim | b439b10 | 2016-02-03 13:09:09 -0800 | [diff] [blame] | 2781 | return ret; |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2782 | } |
| 2783 | |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2784 | #ifdef CONFIG_COMPAT |
| 2785 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 2786 | { |
| 2787 | switch (cmd) { |
| 2788 | case F2FS_IOC32_GETFLAGS: |
| 2789 | cmd = F2FS_IOC_GETFLAGS; |
| 2790 | break; |
| 2791 | case F2FS_IOC32_SETFLAGS: |
| 2792 | cmd = F2FS_IOC_SETFLAGS; |
| 2793 | break; |
Chao Yu | 04ef4b6 | 2015-11-10 18:44:20 +0800 | [diff] [blame] | 2794 | case F2FS_IOC32_GETVERSION: |
| 2795 | cmd = F2FS_IOC_GETVERSION; |
| 2796 | break; |
| 2797 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 2798 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 2799 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 2800 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 2801 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 2802 | case F2FS_IOC_SHUTDOWN: |
| 2803 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 2804 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 2805 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 2806 | case F2FS_IOC_GARBAGE_COLLECT: |
Jaegeuk Kim | 0bb5306 | 2017-06-15 16:44:42 -0700 | [diff] [blame] | 2807 | case F2FS_IOC_GARBAGE_COLLECT_RANGE: |
Chao Yu | 04ef4b6 | 2015-11-10 18:44:20 +0800 | [diff] [blame] | 2808 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 2809 | case F2FS_IOC_DEFRAGMENT: |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2810 | case F2FS_IOC_MOVE_RANGE: |
Jaegeuk Kim | e6b120d | 2017-07-10 12:55:09 -0700 | [diff] [blame] | 2811 | case F2FS_IOC_FLUSH_DEVICE: |
Jaegeuk Kim | 82925bb | 2017-07-21 12:58:59 -0700 | [diff] [blame] | 2812 | case F2FS_IOC_GET_FEATURES: |
Jaegeuk Kim | 9ce3d6b | 2017-12-07 16:25:39 -0800 | [diff] [blame] | 2813 | case F2FS_IOC_GET_PIN_FILE: |
| 2814 | case F2FS_IOC_SET_PIN_FILE: |
Chao Yu | 6bce963 | 2018-01-11 14:42:30 +0800 | [diff] [blame] | 2815 | case F2FS_IOC_PRECACHE_EXTENTS: |
Jaegeuk Kim | 4dd6f97 | 2016-07-08 15:16:47 -0700 | [diff] [blame] | 2816 | break; |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2817 | default: |
| 2818 | return -ENOIOCTLCMD; |
| 2819 | } |
| 2820 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
| 2821 | } |
| 2822 | #endif |
| 2823 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2824 | const struct file_operations f2fs_file_operations = { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 2825 | .llseek = f2fs_llseek, |
Al Viro | aad4f8b | 2014-04-02 14:33:16 -0400 | [diff] [blame] | 2826 | .read_iter = generic_file_read_iter, |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 2827 | .write_iter = f2fs_file_write_iter, |
| 2828 | .open = f2fs_file_open, |
Jaegeuk Kim | 1266223 | 2014-12-05 14:37:37 -0800 | [diff] [blame] | 2829 | .release = f2fs_release_file, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2830 | .mmap = f2fs_file_mmap, |
Jaegeuk Kim | a778c4c | 2017-07-24 19:46:29 -0700 | [diff] [blame] | 2831 | .flush = f2fs_file_flush, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2832 | .fsync = f2fs_sync_file, |
| 2833 | .fallocate = f2fs_fallocate, |
| 2834 | .unlocked_ioctl = f2fs_ioctl, |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 2835 | #ifdef CONFIG_COMPAT |
| 2836 | .compat_ioctl = f2fs_compat_ioctl, |
| 2837 | #endif |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2838 | .splice_read = generic_file_splice_read, |
Al Viro | 8d02076 | 2014-04-05 04:27:08 -0400 | [diff] [blame] | 2839 | .splice_write = iter_file_splice_write, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2840 | }; |