Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 1 | /* |
| 2 | * fs/f2fs/inline.c |
| 3 | * Copyright (c) 2013, Intel Corporation |
| 4 | * Authors: Huajun Li <huajun.li@intel.com> |
| 5 | * Haicheng Li <haicheng.li@intel.com> |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/f2fs_fs.h> |
| 13 | |
| 14 | #include "f2fs.h" |
Jaegeuk Kim | 67f8cf3c | 2015-10-15 11:34:49 -0700 | [diff] [blame] | 15 | #include "node.h" |
Mohan Srinivasan | dd85f78 | 2016-09-19 17:33:50 -0700 | [diff] [blame] | 16 | #include <trace/events/android_fs.h> |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 17 | |
Jaegeuk Kim | 01b960e | 2015-04-23 10:27:21 -0700 | [diff] [blame] | 18 | bool f2fs_may_inline_data(struct inode *inode) |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 19 | { |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 20 | if (f2fs_is_atomic_file(inode)) |
| 21 | return false; |
| 22 | |
Wanpeng Li | 368a0e4 | 2015-03-19 13:23:48 +0800 | [diff] [blame] | 23 | if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode)) |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 24 | return false; |
| 25 | |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 26 | if (i_size_read(inode) > MAX_INLINE_DATA) |
| 27 | return false; |
| 28 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 29 | if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) |
| 30 | return false; |
| 31 | |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 32 | return true; |
| 33 | } |
| 34 | |
Jaegeuk Kim | 01b960e | 2015-04-23 10:27:21 -0700 | [diff] [blame] | 35 | bool f2fs_may_inline_dentry(struct inode *inode) |
| 36 | { |
| 37 | if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY)) |
| 38 | return false; |
| 39 | |
| 40 | if (!S_ISDIR(inode->i_mode)) |
| 41 | return false; |
| 42 | |
| 43 | return true; |
| 44 | } |
| 45 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 46 | void read_inline_data(struct page *page, struct page *ipage) |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 47 | { |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 48 | void *src_addr, *dst_addr; |
| 49 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 50 | if (PageUptodate(page)) |
| 51 | return; |
Chao Yu | 04a17fb | 2013-12-30 18:36:23 +0800 | [diff] [blame] | 52 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 53 | f2fs_bug_on(F2FS_P_SB(page), page->index); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 54 | |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 55 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_SIZE); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 56 | |
| 57 | /* Copy the whole inline data block */ |
| 58 | src_addr = inline_data_addr(ipage); |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 59 | dst_addr = kmap_atomic(page); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 60 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); |
Jaegeuk Kim | 427a45c | 2014-10-26 22:59:27 -0700 | [diff] [blame] | 61 | flush_dcache_page(page); |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 62 | kunmap_atomic(dst_addr); |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 63 | if (!PageUptodate(page)) |
| 64 | SetPageUptodate(page); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 65 | } |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 66 | |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 67 | bool truncate_inline_inode(struct page *ipage, u64 from) |
Chao Yu | feeb0de | 2015-01-26 20:22:55 +0800 | [diff] [blame] | 68 | { |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 69 | void *addr; |
| 70 | |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 71 | if (from >= MAX_INLINE_DATA) |
| 72 | return false; |
| 73 | |
| 74 | addr = inline_data_addr(ipage); |
| 75 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 76 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 77 | memset(addr + from, 0, MAX_INLINE_DATA - from); |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 78 | set_page_dirty(ipage); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 79 | return true; |
Chao Yu | feeb0de | 2015-01-26 20:22:55 +0800 | [diff] [blame] | 80 | } |
| 81 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 82 | int f2fs_read_inline_data(struct inode *inode, struct page *page) |
| 83 | { |
| 84 | struct page *ipage; |
| 85 | |
Mohan Srinivasan | dd85f78 | 2016-09-19 17:33:50 -0700 | [diff] [blame] | 86 | trace_android_fs_dataread_start(inode, page_offset(page), |
| 87 | PAGE_SIZE, current->pid, |
| 88 | current->comm); |
| 89 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 90 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
| 91 | if (IS_ERR(ipage)) { |
Mohan Srinivasan | dd85f78 | 2016-09-19 17:33:50 -0700 | [diff] [blame] | 92 | trace_android_fs_dataread_end(inode, page_offset(page), |
| 93 | PAGE_SIZE); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 94 | unlock_page(page); |
| 95 | return PTR_ERR(ipage); |
| 96 | } |
| 97 | |
| 98 | if (!f2fs_has_inline_data(inode)) { |
| 99 | f2fs_put_page(ipage, 1); |
Mohan Srinivasan | dd85f78 | 2016-09-19 17:33:50 -0700 | [diff] [blame] | 100 | trace_android_fs_dataread_end(inode, page_offset(page), |
| 101 | PAGE_SIZE); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 102 | return -EAGAIN; |
| 103 | } |
| 104 | |
| 105 | if (page->index) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 106 | zero_user_segment(page, 0, PAGE_SIZE); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 107 | else |
| 108 | read_inline_data(page, ipage); |
| 109 | |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 110 | if (!PageUptodate(page)) |
| 111 | SetPageUptodate(page); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 112 | f2fs_put_page(ipage, 1); |
Mohan Srinivasan | dd85f78 | 2016-09-19 17:33:50 -0700 | [diff] [blame] | 113 | trace_android_fs_dataread_end(inode, page_offset(page), |
| 114 | PAGE_SIZE); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 115 | unlock_page(page); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 116 | return 0; |
| 117 | } |
| 118 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 119 | int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 120 | { |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 121 | struct f2fs_io_info fio = { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 122 | .sbi = F2FS_I_SB(dn->inode), |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 123 | .type = DATA, |
Mike Christie | 04d328d | 2016-06-05 14:31:55 -0500 | [diff] [blame] | 124 | .op = REQ_OP_WRITE, |
| 125 | .op_flags = WRITE_SYNC | REQ_PRIO, |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 126 | .page = page, |
Jaegeuk Kim | 4375a33 | 2015-04-23 12:04:33 -0700 | [diff] [blame] | 127 | .encrypted_page = NULL, |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 128 | }; |
Jaegeuk Kim | 158c194 | 2014-11-25 11:34:02 -0800 | [diff] [blame] | 129 | int dirty, err; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 130 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 131 | if (!f2fs_exist_data(dn->inode)) |
| 132 | goto clear_out; |
Jaegeuk Kim | ec4e7af | 2014-08-18 14:41:11 -0700 | [diff] [blame] | 133 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 134 | err = f2fs_reserve_block(dn, 0); |
Jaegeuk Kim | 15c6e3a | 2014-04-16 14:22:50 +0900 | [diff] [blame] | 135 | if (err) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 136 | return err; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 137 | |
Yunlei He | 85ead81 | 2016-02-03 10:26:13 +0800 | [diff] [blame] | 138 | f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page)); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 139 | |
Shawn Lin | 8060656 | 2016-02-19 16:02:51 +0800 | [diff] [blame] | 140 | read_inline_data(page, dn->inode_page); |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 141 | set_page_dirty(page); |
| 142 | |
Jaegeuk Kim | 158c194 | 2014-11-25 11:34:02 -0800 | [diff] [blame] | 143 | /* clear dirty state */ |
| 144 | dirty = clear_page_dirty_for_io(page); |
| 145 | |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 146 | /* write data page to try to make data consistent */ |
| 147 | set_page_writeback(page); |
Chao Yu | 7a9d754 | 2016-02-22 18:36:38 +0800 | [diff] [blame] | 148 | fio.old_blkaddr = dn->data_blkaddr; |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 149 | write_data_page(dn, &fio); |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 150 | f2fs_wait_on_page_writeback(page, DATA, true); |
Jaegeuk Kim | 158c194 | 2014-11-25 11:34:02 -0800 | [diff] [blame] | 151 | if (dirty) |
| 152 | inode_dec_dirty_pages(dn->inode); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 153 | |
Jaegeuk Kim | 95f5b0f | 2014-11-25 17:27:38 -0800 | [diff] [blame] | 154 | /* this converted inline_data should be recovered. */ |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 155 | set_inode_flag(dn->inode, FI_APPEND_WRITE); |
Jaegeuk Kim | 95f5b0f | 2014-11-25 17:27:38 -0800 | [diff] [blame] | 156 | |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 157 | /* clear inline data and flag after data writeback */ |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 158 | truncate_inline_inode(dn->inode_page, 0); |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 159 | clear_inline_node(dn->inode_page); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 160 | clear_out: |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 161 | stat_dec_inline_inode(dn->inode); |
Jaegeuk Kim | 57e2a2c | 2014-11-10 16:29:14 -0800 | [diff] [blame] | 162 | f2fs_clear_inline_inode(dn->inode); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 163 | f2fs_put_dnode(dn); |
| 164 | return 0; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 165 | } |
| 166 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 167 | int f2fs_convert_inline_inode(struct inode *inode) |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 168 | { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 169 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 170 | struct dnode_of_data dn; |
| 171 | struct page *ipage, *page; |
| 172 | int err = 0; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 173 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 174 | if (!f2fs_has_inline_data(inode)) |
| 175 | return 0; |
| 176 | |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 177 | page = f2fs_grab_cache_page(inode->i_mapping, 0, false); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 178 | if (!page) |
| 179 | return -ENOMEM; |
Jaegeuk Kim | 9e09fc8 | 2013-12-27 12:28:59 +0900 | [diff] [blame] | 180 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 181 | f2fs_lock_op(sbi); |
| 182 | |
| 183 | ipage = get_node_page(sbi, inode->i_ino); |
| 184 | if (IS_ERR(ipage)) { |
Jaegeuk Kim | 6d20aff | 2014-11-17 16:06:55 -0800 | [diff] [blame] | 185 | err = PTR_ERR(ipage); |
| 186 | goto out; |
Jaegeuk Kim | b067ba1 | 2014-08-07 16:32:25 -0700 | [diff] [blame] | 187 | } |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 188 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 189 | set_new_dnode(&dn, inode, ipage, ipage, 0); |
| 190 | |
| 191 | if (f2fs_has_inline_data(inode)) |
| 192 | err = f2fs_convert_inline_page(&dn, page); |
| 193 | |
| 194 | f2fs_put_dnode(&dn); |
Jaegeuk Kim | 6d20aff | 2014-11-17 16:06:55 -0800 | [diff] [blame] | 195 | out: |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 196 | f2fs_unlock_op(sbi); |
| 197 | |
| 198 | f2fs_put_page(page, 1); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 199 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 200 | f2fs_balance_fs(sbi, dn.node_changed); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 201 | |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 202 | return err; |
| 203 | } |
| 204 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 205 | int f2fs_write_inline_data(struct inode *inode, struct page *page) |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 206 | { |
| 207 | void *src_addr, *dst_addr; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 208 | struct dnode_of_data dn; |
| 209 | int err; |
| 210 | |
| 211 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 212 | err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
| 213 | if (err) |
| 214 | return err; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 215 | |
Jaegeuk Kim | c08a690 | 2014-10-15 10:16:54 -0700 | [diff] [blame] | 216 | if (!f2fs_has_inline_data(inode)) { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 217 | f2fs_put_dnode(&dn); |
| 218 | return -EAGAIN; |
Jaegeuk Kim | c08a690 | 2014-10-15 10:16:54 -0700 | [diff] [blame] | 219 | } |
| 220 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 221 | f2fs_bug_on(F2FS_I_SB(inode), page->index); |
| 222 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 223 | f2fs_wait_on_page_writeback(dn.inode_page, NODE, true); |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 224 | src_addr = kmap_atomic(page); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 225 | dst_addr = inline_data_addr(dn.inode_page); |
| 226 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 227 | kunmap_atomic(src_addr); |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 228 | set_page_dirty(dn.inode_page); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 229 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 230 | set_inode_flag(inode, FI_APPEND_WRITE); |
| 231 | set_inode_flag(inode, FI_DATA_EXIST); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 232 | |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 233 | clear_inline_node(dn.inode_page); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 234 | f2fs_put_dnode(&dn); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 235 | return 0; |
| 236 | } |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 237 | |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 238 | bool recover_inline_data(struct inode *inode, struct page *npage) |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 239 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 240 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 241 | struct f2fs_inode *ri = NULL; |
| 242 | void *src_addr, *dst_addr; |
| 243 | struct page *ipage; |
| 244 | |
| 245 | /* |
| 246 | * The inline_data recovery policy is as follows. |
| 247 | * [prev.] [next] of inline_data flag |
| 248 | * o o -> recover inline_data |
| 249 | * o x -> remove inline_data, and then recover data blocks |
| 250 | * x o -> remove inline_data, and then recover inline_data |
| 251 | * x x -> recover data blocks |
| 252 | */ |
| 253 | if (IS_INODE(npage)) |
| 254 | ri = F2FS_INODE(npage); |
| 255 | |
| 256 | if (f2fs_has_inline_data(inode) && |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 257 | ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 258 | process_inline: |
| 259 | ipage = get_node_page(sbi, inode->i_ino); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 260 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 261 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 262 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
Jaegeuk Kim | 54b591d | 2014-04-29 17:28:32 +0900 | [diff] [blame] | 263 | |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 264 | src_addr = inline_data_addr(npage); |
| 265 | dst_addr = inline_data_addr(ipage); |
| 266 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 267 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 268 | set_inode_flag(inode, FI_INLINE_DATA); |
| 269 | set_inode_flag(inode, FI_DATA_EXIST); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 270 | |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 271 | set_page_dirty(ipage); |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 272 | f2fs_put_page(ipage, 1); |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 273 | return true; |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 274 | } |
| 275 | |
| 276 | if (f2fs_has_inline_data(inode)) { |
| 277 | ipage = get_node_page(sbi, inode->i_ino); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 278 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
Nicholas Krause | 545fe42 | 2015-09-21 18:55:49 -0400 | [diff] [blame] | 279 | if (!truncate_inline_inode(ipage, 0)) |
| 280 | return false; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 281 | f2fs_clear_inline_inode(inode); |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 282 | f2fs_put_page(ipage, 1); |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 283 | } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
Nicholas Krause | 545fe42 | 2015-09-21 18:55:49 -0400 | [diff] [blame] | 284 | if (truncate_blocks(inode, 0, false)) |
| 285 | return false; |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 286 | goto process_inline; |
| 287 | } |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 288 | return false; |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 289 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 290 | |
| 291 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 292 | struct fscrypt_name *fname, struct page **res_page) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 293 | { |
| 294 | struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); |
Jaegeuk Kim | 4e6ebf6 | 2014-10-13 17:26:14 -0700 | [diff] [blame] | 295 | struct f2fs_inline_dentry *inline_dentry; |
Jaegeuk Kim | 6e22c69 | 2015-04-27 17:12:39 -0700 | [diff] [blame] | 296 | struct qstr name = FSTR_TO_QSTR(&fname->disk_name); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 297 | struct f2fs_dir_entry *de; |
Jaegeuk Kim | 7b3cd7d | 2014-10-18 22:52:52 -0700 | [diff] [blame] | 298 | struct f2fs_dentry_ptr d; |
Jaegeuk Kim | 4e6ebf6 | 2014-10-13 17:26:14 -0700 | [diff] [blame] | 299 | struct page *ipage; |
Jaegeuk Kim | 6e22c69 | 2015-04-27 17:12:39 -0700 | [diff] [blame] | 300 | f2fs_hash_t namehash; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 301 | |
| 302 | ipage = get_node_page(sbi, dir->i_ino); |
Jaegeuk Kim | 42d9640 | 2016-05-25 14:29:11 -0700 | [diff] [blame] | 303 | if (IS_ERR(ipage)) { |
| 304 | *res_page = ipage; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 305 | return NULL; |
Jaegeuk Kim | 42d9640 | 2016-05-25 14:29:11 -0700 | [diff] [blame] | 306 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 307 | |
Jaegeuk Kim | 6e22c69 | 2015-04-27 17:12:39 -0700 | [diff] [blame] | 308 | namehash = f2fs_dentry_hash(&name); |
| 309 | |
Jaegeuk Kim | 4e6ebf6 | 2014-10-13 17:26:14 -0700 | [diff] [blame] | 310 | inline_dentry = inline_data_addr(ipage); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 311 | |
Jaegeuk Kim | d8c6822 | 2015-04-27 16:26:24 -0700 | [diff] [blame] | 312 | make_dentry_ptr(NULL, &d, (void *)inline_dentry, 2); |
Jaegeuk Kim | 6e22c69 | 2015-04-27 17:12:39 -0700 | [diff] [blame] | 313 | de = find_target_dentry(fname, namehash, NULL, &d); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 314 | unlock_page(ipage); |
Jaegeuk Kim | 4e6ebf6 | 2014-10-13 17:26:14 -0700 | [diff] [blame] | 315 | if (de) |
| 316 | *res_page = ipage; |
| 317 | else |
| 318 | f2fs_put_page(ipage, 0); |
| 319 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 320 | return de; |
| 321 | } |
| 322 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 323 | int make_empty_inline_dir(struct inode *inode, struct inode *parent, |
| 324 | struct page *ipage) |
| 325 | { |
| 326 | struct f2fs_inline_dentry *dentry_blk; |
Jaegeuk Kim | 062a3e7 | 2014-10-18 23:06:41 -0700 | [diff] [blame] | 327 | struct f2fs_dentry_ptr d; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 328 | |
| 329 | dentry_blk = inline_data_addr(ipage); |
| 330 | |
Jaegeuk Kim | d8c6822 | 2015-04-27 16:26:24 -0700 | [diff] [blame] | 331 | make_dentry_ptr(NULL, &d, (void *)dentry_blk, 2); |
Jaegeuk Kim | 062a3e7 | 2014-10-18 23:06:41 -0700 | [diff] [blame] | 332 | do_make_empty_dir(inode, parent, &d); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 333 | |
| 334 | set_page_dirty(ipage); |
| 335 | |
| 336 | /* update i_size to MAX_INLINE_DATA */ |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 337 | if (i_size_read(inode) < MAX_INLINE_DATA) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 338 | f2fs_i_size_write(inode, MAX_INLINE_DATA); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 339 | return 0; |
| 340 | } |
| 341 | |
Chao Yu | 470f00e | 2015-07-14 18:14:06 +0800 | [diff] [blame] | 342 | /* |
| 343 | * NOTE: ipage is grabbed by caller, but if any error occurs, we should |
| 344 | * release ipage in this function. |
| 345 | */ |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 346 | static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 347 | struct f2fs_inline_dentry *inline_dentry) |
| 348 | { |
| 349 | struct page *page; |
| 350 | struct dnode_of_data dn; |
| 351 | struct f2fs_dentry_block *dentry_blk; |
| 352 | int err; |
| 353 | |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 354 | page = f2fs_grab_cache_page(dir->i_mapping, 0, false); |
Chao Yu | 470f00e | 2015-07-14 18:14:06 +0800 | [diff] [blame] | 355 | if (!page) { |
| 356 | f2fs_put_page(ipage, 1); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 357 | return -ENOMEM; |
Chao Yu | 470f00e | 2015-07-14 18:14:06 +0800 | [diff] [blame] | 358 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 359 | |
| 360 | set_new_dnode(&dn, dir, ipage, NULL, 0); |
| 361 | err = f2fs_reserve_block(&dn, 0); |
| 362 | if (err) |
| 363 | goto out; |
| 364 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 365 | f2fs_wait_on_page_writeback(page, DATA, true); |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 366 | zero_user_segment(page, MAX_INLINE_DATA, PAGE_SIZE); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 367 | |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 368 | dentry_blk = kmap_atomic(page); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 369 | |
| 370 | /* copy data from inline dentry block to new dentry block */ |
| 371 | memcpy(dentry_blk->dentry_bitmap, inline_dentry->dentry_bitmap, |
| 372 | INLINE_DENTRY_BITMAP_SIZE); |
Chao Yu | 4ec17d6 | 2015-08-24 17:36:25 +0800 | [diff] [blame] | 373 | memset(dentry_blk->dentry_bitmap + INLINE_DENTRY_BITMAP_SIZE, 0, |
| 374 | SIZE_OF_DENTRY_BITMAP - INLINE_DENTRY_BITMAP_SIZE); |
| 375 | /* |
| 376 | * we do not need to zero out remainder part of dentry and filename |
| 377 | * field, since we have used bitmap for marking the usage status of |
| 378 | * them, besides, we can also ignore copying/zeroing reserved space |
| 379 | * of dentry block, because them haven't been used so far. |
| 380 | */ |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 381 | memcpy(dentry_blk->dentry, inline_dentry->dentry, |
| 382 | sizeof(struct f2fs_dir_entry) * NR_INLINE_DENTRY); |
| 383 | memcpy(dentry_blk->filename, inline_dentry->filename, |
| 384 | NR_INLINE_DENTRY * F2FS_SLOT_LEN); |
| 385 | |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 386 | kunmap_atomic(dentry_blk); |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 387 | if (!PageUptodate(page)) |
| 388 | SetPageUptodate(page); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 389 | set_page_dirty(page); |
| 390 | |
| 391 | /* clear inline dir and flag after data writeback */ |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 392 | truncate_inline_inode(ipage, 0); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 393 | |
Jaegeuk Kim | 3289c06 | 2014-10-13 20:00:16 -0700 | [diff] [blame] | 394 | stat_dec_inline_dir(dir); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 395 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 396 | |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 397 | f2fs_i_depth_write(dir, 1); |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 398 | if (i_size_read(dir) < PAGE_SIZE) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 399 | f2fs_i_size_write(dir, PAGE_SIZE); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 400 | out: |
| 401 | f2fs_put_page(page, 1); |
| 402 | return err; |
| 403 | } |
| 404 | |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 405 | static int f2fs_add_inline_entries(struct inode *dir, |
| 406 | struct f2fs_inline_dentry *inline_dentry) |
| 407 | { |
| 408 | struct f2fs_dentry_ptr d; |
| 409 | unsigned long bit_pos = 0; |
| 410 | int err = 0; |
| 411 | |
| 412 | make_dentry_ptr(NULL, &d, (void *)inline_dentry, 2); |
| 413 | |
| 414 | while (bit_pos < d.max) { |
| 415 | struct f2fs_dir_entry *de; |
| 416 | struct qstr new_name; |
| 417 | nid_t ino; |
| 418 | umode_t fake_mode; |
| 419 | |
| 420 | if (!test_bit_le(bit_pos, d.bitmap)) { |
| 421 | bit_pos++; |
| 422 | continue; |
| 423 | } |
| 424 | |
| 425 | de = &d.dentry[bit_pos]; |
Chao Yu | a4a13f5 | 2016-04-27 22:22:20 +0800 | [diff] [blame] | 426 | |
| 427 | if (unlikely(!de->name_len)) { |
| 428 | bit_pos++; |
| 429 | continue; |
| 430 | } |
| 431 | |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 432 | new_name.name = d.filename[bit_pos]; |
| 433 | new_name.len = de->name_len; |
| 434 | |
| 435 | ino = le32_to_cpu(de->ino); |
| 436 | fake_mode = get_de_type(de) << S_SHIFT; |
| 437 | |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 438 | err = f2fs_add_regular_entry(dir, &new_name, NULL, NULL, |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 439 | ino, fake_mode); |
| 440 | if (err) |
| 441 | goto punch_dentry_pages; |
| 442 | |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 443 | bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); |
| 444 | } |
| 445 | return 0; |
| 446 | punch_dentry_pages: |
| 447 | truncate_inode_pages(&dir->i_data, 0); |
| 448 | truncate_blocks(dir, 0, false); |
| 449 | remove_dirty_inode(dir); |
| 450 | return err; |
| 451 | } |
| 452 | |
| 453 | static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, |
| 454 | struct f2fs_inline_dentry *inline_dentry) |
| 455 | { |
| 456 | struct f2fs_inline_dentry *backup_dentry; |
| 457 | int err; |
| 458 | |
Chao Yu | 1ecc0c5 | 2016-09-23 21:30:09 +0800 | [diff] [blame] | 459 | backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), |
| 460 | sizeof(struct f2fs_inline_dentry), GFP_F2FS_ZERO); |
Chao Yu | 8975bdf | 2016-05-14 19:03:53 +0800 | [diff] [blame] | 461 | if (!backup_dentry) { |
| 462 | f2fs_put_page(ipage, 1); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 463 | return -ENOMEM; |
Chao Yu | 8975bdf | 2016-05-14 19:03:53 +0800 | [diff] [blame] | 464 | } |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 465 | |
| 466 | memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA); |
| 467 | truncate_inline_inode(ipage, 0); |
| 468 | |
| 469 | unlock_page(ipage); |
| 470 | |
| 471 | err = f2fs_add_inline_entries(dir, backup_dentry); |
| 472 | if (err) |
| 473 | goto recover; |
| 474 | |
| 475 | lock_page(ipage); |
| 476 | |
| 477 | stat_dec_inline_dir(dir); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 478 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 479 | kfree(backup_dentry); |
| 480 | return 0; |
| 481 | recover: |
| 482 | lock_page(ipage); |
| 483 | memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA); |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 484 | f2fs_i_depth_write(dir, 0); |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 485 | f2fs_i_size_write(dir, MAX_INLINE_DATA); |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 486 | set_page_dirty(ipage); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 487 | f2fs_put_page(ipage, 1); |
| 488 | |
| 489 | kfree(backup_dentry); |
| 490 | return err; |
| 491 | } |
| 492 | |
| 493 | static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage, |
| 494 | struct f2fs_inline_dentry *inline_dentry) |
| 495 | { |
| 496 | if (!F2FS_I(dir)->i_dir_level) |
| 497 | return f2fs_move_inline_dirents(dir, ipage, inline_dentry); |
| 498 | else |
| 499 | return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry); |
| 500 | } |
| 501 | |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 502 | int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name, |
| 503 | const struct qstr *orig_name, |
| 504 | struct inode *inode, nid_t ino, umode_t mode) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 505 | { |
| 506 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
| 507 | struct page *ipage; |
| 508 | unsigned int bit_pos; |
| 509 | f2fs_hash_t name_hash; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 510 | struct f2fs_inline_dentry *dentry_blk = NULL; |
Chao Yu | 3b4d732 | 2015-02-16 16:17:20 +0800 | [diff] [blame] | 511 | struct f2fs_dentry_ptr d; |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 512 | int slots = GET_DENTRY_SLOTS(new_name->len); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 513 | struct page *page = NULL; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 514 | int err = 0; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 515 | |
| 516 | ipage = get_node_page(sbi, dir->i_ino); |
| 517 | if (IS_ERR(ipage)) |
| 518 | return PTR_ERR(ipage); |
| 519 | |
| 520 | dentry_blk = inline_data_addr(ipage); |
Jaegeuk Kim | a82afa2 | 2014-10-13 16:28:13 -0700 | [diff] [blame] | 521 | bit_pos = room_for_filename(&dentry_blk->dentry_bitmap, |
| 522 | slots, NR_INLINE_DENTRY); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 523 | if (bit_pos >= NR_INLINE_DENTRY) { |
| 524 | err = f2fs_convert_inline_dir(dir, ipage, dentry_blk); |
Chao Yu | 470f00e | 2015-07-14 18:14:06 +0800 | [diff] [blame] | 525 | if (err) |
| 526 | return err; |
| 527 | err = -EAGAIN; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 528 | goto out; |
| 529 | } |
| 530 | |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 531 | if (inode) { |
| 532 | down_write(&F2FS_I(inode)->i_sem); |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 533 | page = init_inode_metadata(inode, dir, new_name, |
| 534 | orig_name, ipage); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 535 | if (IS_ERR(page)) { |
| 536 | err = PTR_ERR(page); |
| 537 | goto fail; |
| 538 | } |
Shuoran Liu | 167451e | 2016-08-29 11:27:55 +0800 | [diff] [blame] | 539 | if (f2fs_encrypted_inode(dir)) |
| 540 | file_set_enc_name(inode); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 541 | } |
Jaegeuk Kim | bce8d11 | 2014-10-13 19:42:53 -0700 | [diff] [blame] | 542 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 543 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
Chao Yu | 3b4d732 | 2015-02-16 16:17:20 +0800 | [diff] [blame] | 544 | |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 545 | name_hash = f2fs_dentry_hash(new_name); |
Jaegeuk Kim | d8c6822 | 2015-04-27 16:26:24 -0700 | [diff] [blame] | 546 | make_dentry_ptr(NULL, &d, (void *)dentry_blk, 2); |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 547 | f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos); |
Chao Yu | 3b4d732 | 2015-02-16 16:17:20 +0800 | [diff] [blame] | 548 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 549 | set_page_dirty(ipage); |
| 550 | |
| 551 | /* we don't need to mark_inode_dirty now */ |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 552 | if (inode) { |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 553 | f2fs_i_pino_write(inode, dir->i_ino); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 554 | f2fs_put_page(page, 1); |
| 555 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 556 | |
| 557 | update_parent_metadata(dir, inode, 0); |
| 558 | fail: |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 559 | if (inode) |
| 560 | up_write(&F2FS_I(inode)->i_sem); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 561 | out: |
| 562 | f2fs_put_page(ipage, 1); |
| 563 | return err; |
| 564 | } |
| 565 | |
| 566 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, |
| 567 | struct inode *dir, struct inode *inode) |
| 568 | { |
| 569 | struct f2fs_inline_dentry *inline_dentry; |
| 570 | int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); |
| 571 | unsigned int bit_pos; |
| 572 | int i; |
| 573 | |
| 574 | lock_page(page); |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 575 | f2fs_wait_on_page_writeback(page, NODE, true); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 576 | |
| 577 | inline_dentry = inline_data_addr(page); |
| 578 | bit_pos = dentry - inline_dentry->dentry; |
| 579 | for (i = 0; i < slots; i++) |
Jaegeuk Kim | 6bf6b26 | 2016-08-31 16:20:37 -0700 | [diff] [blame] | 580 | __clear_bit_le(bit_pos + i, |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 581 | &inline_dentry->dentry_bitmap); |
| 582 | |
| 583 | set_page_dirty(page); |
Jaegeuk Kim | 9f7c45c | 2016-06-01 21:18:25 -0700 | [diff] [blame] | 584 | f2fs_put_page(page, 1); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 585 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 586 | dir->i_ctime = dir->i_mtime = current_time(dir); |
Jaegeuk Kim | b56ab83 | 2016-06-30 19:09:37 -0700 | [diff] [blame] | 587 | f2fs_mark_inode_dirty_sync(dir); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 588 | |
| 589 | if (inode) |
Jaegeuk Kim | 9f7c45c | 2016-06-01 21:18:25 -0700 | [diff] [blame] | 590 | f2fs_drop_nlink(dir, inode); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | bool f2fs_empty_inline_dir(struct inode *dir) |
| 594 | { |
| 595 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
| 596 | struct page *ipage; |
| 597 | unsigned int bit_pos = 2; |
| 598 | struct f2fs_inline_dentry *dentry_blk; |
| 599 | |
| 600 | ipage = get_node_page(sbi, dir->i_ino); |
| 601 | if (IS_ERR(ipage)) |
| 602 | return false; |
| 603 | |
| 604 | dentry_blk = inline_data_addr(ipage); |
| 605 | bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap, |
| 606 | NR_INLINE_DENTRY, |
| 607 | bit_pos); |
| 608 | |
| 609 | f2fs_put_page(ipage, 1); |
| 610 | |
| 611 | if (bit_pos < NR_INLINE_DENTRY) |
| 612 | return false; |
| 613 | |
| 614 | return true; |
| 615 | } |
| 616 | |
Jaegeuk Kim | d8c6822 | 2015-04-27 16:26:24 -0700 | [diff] [blame] | 617 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 618 | struct fscrypt_str *fstr) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 619 | { |
| 620 | struct inode *inode = file_inode(file); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 621 | struct f2fs_inline_dentry *inline_dentry = NULL; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 622 | struct page *ipage = NULL; |
Jaegeuk Kim | 7b3cd7d | 2014-10-18 22:52:52 -0700 | [diff] [blame] | 623 | struct f2fs_dentry_ptr d; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 624 | |
| 625 | if (ctx->pos == NR_INLINE_DENTRY) |
| 626 | return 0; |
| 627 | |
Jaegeuk Kim | 38594de | 2014-10-15 21:29:51 -0700 | [diff] [blame] | 628 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 629 | if (IS_ERR(ipage)) |
| 630 | return PTR_ERR(ipage); |
| 631 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 632 | inline_dentry = inline_data_addr(ipage); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 633 | |
Jaegeuk Kim | d8c6822 | 2015-04-27 16:26:24 -0700 | [diff] [blame] | 634 | make_dentry_ptr(inode, &d, (void *)inline_dentry, 2); |
Jaegeuk Kim | 7b3cd7d | 2014-10-18 22:52:52 -0700 | [diff] [blame] | 635 | |
Jaegeuk Kim | d8c6822 | 2015-04-27 16:26:24 -0700 | [diff] [blame] | 636 | if (!f2fs_fill_dentries(ctx, &d, 0, fstr)) |
Jaegeuk Kim | 38594de | 2014-10-15 21:29:51 -0700 | [diff] [blame] | 637 | ctx->pos = NR_INLINE_DENTRY; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 638 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 639 | f2fs_put_page(ipage, 1); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 640 | return 0; |
| 641 | } |
Jaegeuk Kim | 67f8cf3c | 2015-10-15 11:34:49 -0700 | [diff] [blame] | 642 | |
| 643 | int f2fs_inline_data_fiemap(struct inode *inode, |
| 644 | struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) |
| 645 | { |
| 646 | __u64 byteaddr, ilen; |
| 647 | __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | |
| 648 | FIEMAP_EXTENT_LAST; |
| 649 | struct node_info ni; |
| 650 | struct page *ipage; |
| 651 | int err = 0; |
| 652 | |
| 653 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
| 654 | if (IS_ERR(ipage)) |
| 655 | return PTR_ERR(ipage); |
| 656 | |
| 657 | if (!f2fs_has_inline_data(inode)) { |
| 658 | err = -EAGAIN; |
| 659 | goto out; |
| 660 | } |
| 661 | |
| 662 | ilen = min_t(size_t, MAX_INLINE_DATA, i_size_read(inode)); |
| 663 | if (start >= ilen) |
| 664 | goto out; |
| 665 | if (start + len < ilen) |
| 666 | ilen = start + len; |
| 667 | ilen -= start; |
| 668 | |
| 669 | get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); |
| 670 | byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; |
| 671 | byteaddr += (char *)inline_data_addr(ipage) - (char *)F2FS_INODE(ipage); |
| 672 | err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); |
| 673 | out: |
| 674 | f2fs_put_page(ipage, 1); |
| 675 | return err; |
| 676 | } |