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 | 25cc70f | 2016-12-14 16:39:51 -0800 | [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 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 26 | if (i_size_read(inode) > MAX_INLINE_DATA(inode)) |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 27 | return false; |
| 28 | |
Eric Biggers | c629974 | 2018-04-18 11:09:48 -0700 | [diff] [blame] | 29 | if (f2fs_post_read_required(inode)) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 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 | { |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 48 | struct inode *inode = page->mapping->host; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 49 | void *src_addr, *dst_addr; |
| 50 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 51 | if (PageUptodate(page)) |
| 52 | return; |
Chao Yu | 04a17fb | 2013-12-30 18:36:23 +0800 | [diff] [blame] | 53 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 54 | f2fs_bug_on(F2FS_P_SB(page), page->index); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 55 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 56 | zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 57 | |
| 58 | /* Copy the whole inline data block */ |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 59 | src_addr = inline_data_addr(inode, ipage); |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 60 | dst_addr = kmap_atomic(page); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 61 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); |
Jaegeuk Kim | 427a45c | 2014-10-26 22:59:27 -0700 | [diff] [blame] | 62 | flush_dcache_page(page); |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 63 | kunmap_atomic(dst_addr); |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 64 | if (!PageUptodate(page)) |
| 65 | SetPageUptodate(page); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 66 | } |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 67 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 68 | void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from) |
Chao Yu | feeb0de | 2015-01-26 20:22:55 +0800 | [diff] [blame] | 69 | { |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 70 | void *addr; |
| 71 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 72 | if (from >= MAX_INLINE_DATA(inode)) |
| 73 | return; |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 74 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 75 | addr = inline_data_addr(inode, ipage); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 76 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 77 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 78 | memset(addr + from, 0, MAX_INLINE_DATA(inode) - from); |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 79 | set_page_dirty(ipage); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 80 | |
| 81 | if (from == 0) |
| 82 | clear_inode_flag(inode, FI_DATA_EXIST); |
Chao Yu | feeb0de | 2015-01-26 20:22:55 +0800 | [diff] [blame] | 83 | } |
| 84 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 85 | int f2fs_read_inline_data(struct inode *inode, struct page *page) |
| 86 | { |
| 87 | struct page *ipage; |
| 88 | |
Mohan Srinivasan | 009e608 | 2017-02-10 14:26:23 -0800 | [diff] [blame] | 89 | if (trace_android_fs_dataread_start_enabled()) { |
| 90 | char *path, pathbuf[MAX_TRACE_PATHBUF_LEN]; |
| 91 | |
| 92 | path = android_fstrace_get_pathname(pathbuf, |
| 93 | MAX_TRACE_PATHBUF_LEN, |
| 94 | inode); |
| 95 | trace_android_fs_dataread_start(inode, page_offset(page), |
| 96 | PAGE_SIZE, current->pid, |
| 97 | path, current->comm); |
| 98 | } |
Mohan Srinivasan | 25cc70f | 2016-12-14 16:39:51 -0800 | [diff] [blame] | 99 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 100 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
| 101 | if (IS_ERR(ipage)) { |
Mohan Srinivasan | 25cc70f | 2016-12-14 16:39:51 -0800 | [diff] [blame] | 102 | trace_android_fs_dataread_end(inode, page_offset(page), |
| 103 | PAGE_SIZE); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 104 | unlock_page(page); |
| 105 | return PTR_ERR(ipage); |
| 106 | } |
| 107 | |
| 108 | if (!f2fs_has_inline_data(inode)) { |
| 109 | f2fs_put_page(ipage, 1); |
Mohan Srinivasan | 25cc70f | 2016-12-14 16:39:51 -0800 | [diff] [blame] | 110 | trace_android_fs_dataread_end(inode, page_offset(page), |
| 111 | PAGE_SIZE); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 112 | return -EAGAIN; |
| 113 | } |
| 114 | |
| 115 | if (page->index) |
Kirill A. Shutemov | 09cbfea | 2016-04-01 15:29:47 +0300 | [diff] [blame] | 116 | zero_user_segment(page, 0, PAGE_SIZE); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 117 | else |
| 118 | read_inline_data(page, ipage); |
| 119 | |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 120 | if (!PageUptodate(page)) |
| 121 | SetPageUptodate(page); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 122 | f2fs_put_page(ipage, 1); |
Mohan Srinivasan | 25cc70f | 2016-12-14 16:39:51 -0800 | [diff] [blame] | 123 | trace_android_fs_dataread_end(inode, page_offset(page), |
| 124 | PAGE_SIZE); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 125 | unlock_page(page); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 126 | return 0; |
| 127 | } |
| 128 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 129 | 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] | 130 | { |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 131 | struct f2fs_io_info fio = { |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 132 | .sbi = F2FS_I_SB(dn->inode), |
Jaegeuk Kim | 8ae26d1 | 2017-09-23 17:02:18 +0800 | [diff] [blame] | 133 | .ino = dn->inode->i_ino, |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 134 | .type = DATA, |
Mike Christie | 04d328d | 2016-06-05 14:31:55 -0500 | [diff] [blame] | 135 | .op = REQ_OP_WRITE, |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 136 | .op_flags = REQ_SYNC | REQ_PRIO, |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 137 | .page = page, |
Jaegeuk Kim | 4375a33 | 2015-04-23 12:04:33 -0700 | [diff] [blame] | 138 | .encrypted_page = NULL, |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 139 | .io_type = FS_DATA_IO, |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 140 | }; |
Jaegeuk Kim | 158c194 | 2014-11-25 11:34:02 -0800 | [diff] [blame] | 141 | int dirty, err; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 142 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 143 | if (!f2fs_exist_data(dn->inode)) |
| 144 | goto clear_out; |
Jaegeuk Kim | ec4e7af | 2014-08-18 14:41:11 -0700 | [diff] [blame] | 145 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 146 | err = f2fs_reserve_block(dn, 0); |
Jaegeuk Kim | 15c6e3a | 2014-04-16 14:22:50 +0900 | [diff] [blame] | 147 | if (err) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 148 | return err; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 149 | |
Yunlei He | 85ead81 | 2016-02-03 10:26:13 +0800 | [diff] [blame] | 150 | f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page)); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 151 | |
Shawn Lin | 8060656 | 2016-02-19 16:02:51 +0800 | [diff] [blame] | 152 | read_inline_data(page, dn->inode_page); |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 153 | set_page_dirty(page); |
| 154 | |
Jaegeuk Kim | 158c194 | 2014-11-25 11:34:02 -0800 | [diff] [blame] | 155 | /* clear dirty state */ |
| 156 | dirty = clear_page_dirty_for_io(page); |
| 157 | |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 158 | /* write data page to try to make data consistent */ |
| 159 | set_page_writeback(page); |
Jaegeuk Kim | 9731a2d | 2018-04-11 23:09:04 -0700 | [diff] [blame] | 160 | ClearPageError(page); |
Chao Yu | 7a9d754 | 2016-02-22 18:36:38 +0800 | [diff] [blame] | 161 | fio.old_blkaddr = dn->data_blkaddr; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 162 | set_inode_flag(dn->inode, FI_HOT_DATA); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 163 | write_data_page(dn, &fio); |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 164 | f2fs_wait_on_page_writeback(page, DATA, true); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 165 | if (dirty) { |
Jaegeuk Kim | 158c194 | 2014-11-25 11:34:02 -0800 | [diff] [blame] | 166 | inode_dec_dirty_pages(dn->inode); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 167 | remove_dirty_inode(dn->inode); |
| 168 | } |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 169 | |
Jaegeuk Kim | 95f5b0f | 2014-11-25 17:27:38 -0800 | [diff] [blame] | 170 | /* this converted inline_data should be recovered. */ |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 171 | set_inode_flag(dn->inode, FI_APPEND_WRITE); |
Jaegeuk Kim | 95f5b0f | 2014-11-25 17:27:38 -0800 | [diff] [blame] | 172 | |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 173 | /* clear inline data and flag after data writeback */ |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 174 | truncate_inline_inode(dn->inode, dn->inode_page, 0); |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 175 | clear_inline_node(dn->inode_page); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 176 | clear_out: |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 177 | stat_dec_inline_inode(dn->inode); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 178 | clear_inode_flag(dn->inode, FI_INLINE_DATA); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 179 | f2fs_put_dnode(dn); |
| 180 | return 0; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 181 | } |
| 182 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 183 | int f2fs_convert_inline_inode(struct inode *inode) |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 184 | { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 185 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 186 | struct dnode_of_data dn; |
| 187 | struct page *ipage, *page; |
| 188 | int err = 0; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 189 | |
Jaegeuk Kim | b9d777b | 2015-12-22 11:09:35 -0800 | [diff] [blame] | 190 | if (!f2fs_has_inline_data(inode)) |
| 191 | return 0; |
| 192 | |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 193 | page = f2fs_grab_cache_page(inode->i_mapping, 0, false); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 194 | if (!page) |
| 195 | return -ENOMEM; |
Jaegeuk Kim | 9e09fc8 | 2013-12-27 12:28:59 +0900 | [diff] [blame] | 196 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 197 | f2fs_lock_op(sbi); |
| 198 | |
| 199 | ipage = get_node_page(sbi, inode->i_ino); |
| 200 | if (IS_ERR(ipage)) { |
Jaegeuk Kim | 6d20aff | 2014-11-17 16:06:55 -0800 | [diff] [blame] | 201 | err = PTR_ERR(ipage); |
| 202 | goto out; |
Jaegeuk Kim | b067ba1 | 2014-08-07 16:32:25 -0700 | [diff] [blame] | 203 | } |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 204 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 205 | set_new_dnode(&dn, inode, ipage, ipage, 0); |
| 206 | |
| 207 | if (f2fs_has_inline_data(inode)) |
| 208 | err = f2fs_convert_inline_page(&dn, page); |
| 209 | |
| 210 | f2fs_put_dnode(&dn); |
Jaegeuk Kim | 6d20aff | 2014-11-17 16:06:55 -0800 | [diff] [blame] | 211 | out: |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 212 | f2fs_unlock_op(sbi); |
| 213 | |
| 214 | f2fs_put_page(page, 1); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 215 | |
Jaegeuk Kim | 2c4db1a | 2016-01-07 14:15:04 -0800 | [diff] [blame] | 216 | f2fs_balance_fs(sbi, dn.node_changed); |
Jaegeuk Kim | 2a34076 | 2015-12-22 13:23:35 -0800 | [diff] [blame] | 217 | |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 218 | return err; |
| 219 | } |
| 220 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 221 | int f2fs_write_inline_data(struct inode *inode, struct page *page) |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 222 | { |
| 223 | void *src_addr, *dst_addr; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 224 | struct dnode_of_data dn; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 225 | struct address_space *mapping = page_mapping(page); |
| 226 | unsigned long flags; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 227 | int err; |
| 228 | |
| 229 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 230 | err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
| 231 | if (err) |
| 232 | return err; |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 233 | |
Jaegeuk Kim | c08a690 | 2014-10-15 10:16:54 -0700 | [diff] [blame] | 234 | if (!f2fs_has_inline_data(inode)) { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 235 | f2fs_put_dnode(&dn); |
| 236 | return -EAGAIN; |
Jaegeuk Kim | c08a690 | 2014-10-15 10:16:54 -0700 | [diff] [blame] | 237 | } |
| 238 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 239 | f2fs_bug_on(F2FS_I_SB(inode), page->index); |
| 240 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 241 | f2fs_wait_on_page_writeback(dn.inode_page, NODE, true); |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 242 | src_addr = kmap_atomic(page); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 243 | dst_addr = inline_data_addr(inode, dn.inode_page); |
| 244 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); |
Jaegeuk Kim | f1e33a0 | 2014-10-18 23:41:38 -0700 | [diff] [blame] | 245 | kunmap_atomic(src_addr); |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 246 | set_page_dirty(dn.inode_page); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 247 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 248 | spin_lock_irqsave(&mapping->tree_lock, flags); |
| 249 | radix_tree_tag_clear(&mapping->page_tree, page_index(page), |
| 250 | PAGECACHE_TAG_DIRTY); |
| 251 | spin_unlock_irqrestore(&mapping->tree_lock, flags); |
| 252 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 253 | set_inode_flag(inode, FI_APPEND_WRITE); |
| 254 | set_inode_flag(inode, FI_DATA_EXIST); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 255 | |
Jaegeuk Kim | 2049d4f | 2016-01-25 05:57:05 -0800 | [diff] [blame] | 256 | clear_inline_node(dn.inode_page); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 257 | f2fs_put_dnode(&dn); |
Huajun Li | e18c65b | 2013-11-10 23:13:19 +0800 | [diff] [blame] | 258 | return 0; |
| 259 | } |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 260 | |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 261 | bool recover_inline_data(struct inode *inode, struct page *npage) |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 262 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 263 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 264 | struct f2fs_inode *ri = NULL; |
| 265 | void *src_addr, *dst_addr; |
| 266 | struct page *ipage; |
| 267 | |
| 268 | /* |
| 269 | * The inline_data recovery policy is as follows. |
| 270 | * [prev.] [next] of inline_data flag |
| 271 | * o o -> recover inline_data |
| 272 | * o x -> remove inline_data, and then recover data blocks |
| 273 | * x o -> remove inline_data, and then recover inline_data |
| 274 | * x x -> recover data blocks |
| 275 | */ |
| 276 | if (IS_INODE(npage)) |
| 277 | ri = F2FS_INODE(npage); |
| 278 | |
| 279 | if (f2fs_has_inline_data(inode) && |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 280 | ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 281 | process_inline: |
| 282 | ipage = get_node_page(sbi, inode->i_ino); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 283 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 284 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 285 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
Jaegeuk Kim | 54b591d | 2014-04-29 17:28:32 +0900 | [diff] [blame] | 286 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 287 | src_addr = inline_data_addr(inode, npage); |
| 288 | dst_addr = inline_data_addr(inode, ipage); |
| 289 | memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 290 | |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 291 | set_inode_flag(inode, FI_INLINE_DATA); |
| 292 | set_inode_flag(inode, FI_DATA_EXIST); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 293 | |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 294 | set_page_dirty(ipage); |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 295 | f2fs_put_page(ipage, 1); |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 296 | return true; |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | if (f2fs_has_inline_data(inode)) { |
| 300 | ipage = get_node_page(sbi, inode->i_ino); |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 301 | f2fs_bug_on(sbi, IS_ERR(ipage)); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 302 | truncate_inline_inode(inode, ipage, 0); |
| 303 | clear_inode_flag(inode, FI_INLINE_DATA); |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 304 | f2fs_put_page(ipage, 1); |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 305 | } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { |
Nicholas Krause | 545fe42 | 2015-09-21 18:55:49 -0400 | [diff] [blame] | 306 | if (truncate_blocks(inode, 0, false)) |
| 307 | return false; |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 308 | goto process_inline; |
| 309 | } |
Jaegeuk Kim | 0342fd3 | 2014-08-07 16:57:17 -0700 | [diff] [blame] | 310 | return false; |
Jaegeuk Kim | 1e1bb4b | 2013-12-26 12:49:48 +0900 | [diff] [blame] | 311 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 312 | |
| 313 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 314 | struct fscrypt_name *fname, struct page **res_page) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 315 | { |
| 316 | struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); |
Jaegeuk Kim | 6e22c69 | 2015-04-27 17:12:39 -0700 | [diff] [blame] | 317 | struct qstr name = FSTR_TO_QSTR(&fname->disk_name); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 318 | struct f2fs_dir_entry *de; |
Jaegeuk Kim | 7b3cd7d | 2014-10-18 22:52:52 -0700 | [diff] [blame] | 319 | struct f2fs_dentry_ptr d; |
Jaegeuk Kim | 4e6ebf6 | 2014-10-13 17:26:14 -0700 | [diff] [blame] | 320 | struct page *ipage; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 321 | void *inline_dentry; |
Jaegeuk Kim | 6e22c69 | 2015-04-27 17:12:39 -0700 | [diff] [blame] | 322 | f2fs_hash_t namehash; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 323 | |
| 324 | ipage = get_node_page(sbi, dir->i_ino); |
Jaegeuk Kim | 42d9640 | 2016-05-25 14:29:11 -0700 | [diff] [blame] | 325 | if (IS_ERR(ipage)) { |
| 326 | *res_page = ipage; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 327 | return NULL; |
Jaegeuk Kim | 42d9640 | 2016-05-25 14:29:11 -0700 | [diff] [blame] | 328 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 329 | |
Jaegeuk Kim | 8daed21 | 2017-04-24 10:00:08 -0700 | [diff] [blame] | 330 | namehash = f2fs_dentry_hash(&name, fname); |
Jaegeuk Kim | 6e22c69 | 2015-04-27 17:12:39 -0700 | [diff] [blame] | 331 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 332 | inline_dentry = inline_data_addr(dir, ipage); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 333 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 334 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
Jaegeuk Kim | 6e22c69 | 2015-04-27 17:12:39 -0700 | [diff] [blame] | 335 | de = find_target_dentry(fname, namehash, NULL, &d); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 336 | unlock_page(ipage); |
Jaegeuk Kim | 4e6ebf6 | 2014-10-13 17:26:14 -0700 | [diff] [blame] | 337 | if (de) |
| 338 | *res_page = ipage; |
| 339 | else |
| 340 | f2fs_put_page(ipage, 0); |
| 341 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 342 | return de; |
| 343 | } |
| 344 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 345 | int make_empty_inline_dir(struct inode *inode, struct inode *parent, |
| 346 | struct page *ipage) |
| 347 | { |
Jaegeuk Kim | 062a3e7 | 2014-10-18 23:06:41 -0700 | [diff] [blame] | 348 | struct f2fs_dentry_ptr d; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 349 | void *inline_dentry; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 350 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 351 | inline_dentry = inline_data_addr(inode, ipage); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 352 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 353 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
Jaegeuk Kim | 062a3e7 | 2014-10-18 23:06:41 -0700 | [diff] [blame] | 354 | do_make_empty_dir(inode, parent, &d); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 355 | |
| 356 | set_page_dirty(ipage); |
| 357 | |
| 358 | /* update i_size to MAX_INLINE_DATA */ |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 359 | if (i_size_read(inode) < MAX_INLINE_DATA(inode)) |
| 360 | f2fs_i_size_write(inode, MAX_INLINE_DATA(inode)); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 361 | return 0; |
| 362 | } |
| 363 | |
Chao Yu | 470f00e | 2015-07-14 18:14:06 +0800 | [diff] [blame] | 364 | /* |
| 365 | * NOTE: ipage is grabbed by caller, but if any error occurs, we should |
| 366 | * release ipage in this function. |
| 367 | */ |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 368 | static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 369 | void *inline_dentry) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 370 | { |
| 371 | struct page *page; |
| 372 | struct dnode_of_data dn; |
| 373 | struct f2fs_dentry_block *dentry_blk; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 374 | struct f2fs_dentry_ptr src, dst; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 375 | int err; |
| 376 | |
Jaegeuk Kim | 300e129 | 2016-04-29 16:11:53 -0700 | [diff] [blame] | 377 | page = f2fs_grab_cache_page(dir->i_mapping, 0, false); |
Chao Yu | 470f00e | 2015-07-14 18:14:06 +0800 | [diff] [blame] | 378 | if (!page) { |
| 379 | f2fs_put_page(ipage, 1); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 380 | return -ENOMEM; |
Chao Yu | 470f00e | 2015-07-14 18:14:06 +0800 | [diff] [blame] | 381 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 382 | |
| 383 | set_new_dnode(&dn, dir, ipage, NULL, 0); |
| 384 | err = f2fs_reserve_block(&dn, 0); |
| 385 | if (err) |
| 386 | goto out; |
| 387 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 388 | f2fs_wait_on_page_writeback(page, DATA, true); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 389 | zero_user_segment(page, MAX_INLINE_DATA(dir), PAGE_SIZE); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 390 | |
Yunlong Song | 97d7f1c | 2018-02-28 20:31:52 +0800 | [diff] [blame] | 391 | dentry_blk = page_address(page); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 392 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 393 | make_dentry_ptr_inline(dir, &src, inline_dentry); |
| 394 | make_dentry_ptr_block(dir, &dst, dentry_blk); |
| 395 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 396 | /* copy data from inline dentry block to new dentry block */ |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 397 | memcpy(dst.bitmap, src.bitmap, src.nr_bitmap); |
| 398 | memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap); |
Chao Yu | 4ec17d6 | 2015-08-24 17:36:25 +0800 | [diff] [blame] | 399 | /* |
| 400 | * we do not need to zero out remainder part of dentry and filename |
| 401 | * field, since we have used bitmap for marking the usage status of |
| 402 | * them, besides, we can also ignore copying/zeroing reserved space |
| 403 | * of dentry block, because them haven't been used so far. |
| 404 | */ |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 405 | memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max); |
| 406 | memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 407 | |
Jaegeuk Kim | 237c079 | 2016-06-30 18:49:15 -0700 | [diff] [blame] | 408 | if (!PageUptodate(page)) |
| 409 | SetPageUptodate(page); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 410 | set_page_dirty(page); |
| 411 | |
| 412 | /* clear inline dir and flag after data writeback */ |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 413 | truncate_inline_inode(dir, ipage, 0); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 414 | |
Jaegeuk Kim | 3289c06 | 2014-10-13 20:00:16 -0700 | [diff] [blame] | 415 | stat_dec_inline_dir(dir); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 416 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 417 | |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 418 | f2fs_i_depth_write(dir, 1); |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 419 | if (i_size_read(dir) < PAGE_SIZE) |
Jaegeuk Kim | fc9581c | 2016-05-20 09:22:03 -0700 | [diff] [blame] | 420 | f2fs_i_size_write(dir, PAGE_SIZE); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 421 | out: |
| 422 | f2fs_put_page(page, 1); |
| 423 | return err; |
| 424 | } |
| 425 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 426 | static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry) |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 427 | { |
| 428 | struct f2fs_dentry_ptr d; |
| 429 | unsigned long bit_pos = 0; |
| 430 | int err = 0; |
| 431 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 432 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 433 | |
| 434 | while (bit_pos < d.max) { |
| 435 | struct f2fs_dir_entry *de; |
| 436 | struct qstr new_name; |
| 437 | nid_t ino; |
| 438 | umode_t fake_mode; |
| 439 | |
| 440 | if (!test_bit_le(bit_pos, d.bitmap)) { |
| 441 | bit_pos++; |
| 442 | continue; |
| 443 | } |
| 444 | |
| 445 | de = &d.dentry[bit_pos]; |
Chao Yu | a4a13f5 | 2016-04-27 22:22:20 +0800 | [diff] [blame] | 446 | |
| 447 | if (unlikely(!de->name_len)) { |
| 448 | bit_pos++; |
| 449 | continue; |
| 450 | } |
| 451 | |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 452 | new_name.name = d.filename[bit_pos]; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 453 | new_name.len = le16_to_cpu(de->name_len); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 454 | |
| 455 | ino = le32_to_cpu(de->ino); |
| 456 | fake_mode = get_de_type(de) << S_SHIFT; |
| 457 | |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 458 | err = f2fs_add_regular_entry(dir, &new_name, NULL, NULL, |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 459 | ino, fake_mode); |
| 460 | if (err) |
| 461 | goto punch_dentry_pages; |
| 462 | |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 463 | bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); |
| 464 | } |
| 465 | return 0; |
| 466 | punch_dentry_pages: |
| 467 | truncate_inode_pages(&dir->i_data, 0); |
| 468 | truncate_blocks(dir, 0, false); |
| 469 | remove_dirty_inode(dir); |
| 470 | return err; |
| 471 | } |
| 472 | |
| 473 | static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 474 | void *inline_dentry) |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 475 | { |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 476 | void *backup_dentry; |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 477 | int err; |
| 478 | |
Chao Yu | 1ecc0c5 | 2016-09-23 21:30:09 +0800 | [diff] [blame] | 479 | backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 480 | MAX_INLINE_DATA(dir), GFP_F2FS_ZERO); |
Chao Yu | 8975bdf | 2016-05-14 19:03:53 +0800 | [diff] [blame] | 481 | if (!backup_dentry) { |
| 482 | f2fs_put_page(ipage, 1); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 483 | return -ENOMEM; |
Chao Yu | 8975bdf | 2016-05-14 19:03:53 +0800 | [diff] [blame] | 484 | } |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 485 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 486 | memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir)); |
| 487 | truncate_inline_inode(dir, ipage, 0); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 488 | |
| 489 | unlock_page(ipage); |
| 490 | |
| 491 | err = f2fs_add_inline_entries(dir, backup_dentry); |
| 492 | if (err) |
| 493 | goto recover; |
| 494 | |
| 495 | lock_page(ipage); |
| 496 | |
| 497 | stat_dec_inline_dir(dir); |
Jaegeuk Kim | 9194232 | 2016-05-20 10:13:22 -0700 | [diff] [blame] | 498 | clear_inode_flag(dir, FI_INLINE_DENTRY); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 499 | kfree(backup_dentry); |
| 500 | return 0; |
| 501 | recover: |
| 502 | lock_page(ipage); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 503 | memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir)); |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 504 | f2fs_i_depth_write(dir, 0); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 505 | f2fs_i_size_write(dir, MAX_INLINE_DATA(dir)); |
Jaegeuk Kim | ee6d182 | 2016-05-20 16:32:49 -0700 | [diff] [blame] | 506 | set_page_dirty(ipage); |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 507 | f2fs_put_page(ipage, 1); |
| 508 | |
| 509 | kfree(backup_dentry); |
| 510 | return err; |
| 511 | } |
| 512 | |
| 513 | static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage, |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 514 | void *inline_dentry) |
Chao Yu | 675f10b | 2016-02-22 18:29:18 +0800 | [diff] [blame] | 515 | { |
| 516 | if (!F2FS_I(dir)->i_dir_level) |
| 517 | return f2fs_move_inline_dirents(dir, ipage, inline_dentry); |
| 518 | else |
| 519 | return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry); |
| 520 | } |
| 521 | |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 522 | int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name, |
| 523 | const struct qstr *orig_name, |
| 524 | struct inode *inode, nid_t ino, umode_t mode) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 525 | { |
| 526 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
| 527 | struct page *ipage; |
| 528 | unsigned int bit_pos; |
| 529 | f2fs_hash_t name_hash; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 530 | void *inline_dentry = NULL; |
Chao Yu | 3b4d732 | 2015-02-16 16:17:20 +0800 | [diff] [blame] | 531 | struct f2fs_dentry_ptr d; |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 532 | int slots = GET_DENTRY_SLOTS(new_name->len); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 533 | struct page *page = NULL; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 534 | int err = 0; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 535 | |
| 536 | ipage = get_node_page(sbi, dir->i_ino); |
| 537 | if (IS_ERR(ipage)) |
| 538 | return PTR_ERR(ipage); |
| 539 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 540 | inline_dentry = inline_data_addr(dir, ipage); |
| 541 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
| 542 | |
| 543 | bit_pos = room_for_filename(d.bitmap, slots, d.max); |
| 544 | if (bit_pos >= d.max) { |
| 545 | err = f2fs_convert_inline_dir(dir, ipage, inline_dentry); |
Chao Yu | 470f00e | 2015-07-14 18:14:06 +0800 | [diff] [blame] | 546 | if (err) |
| 547 | return err; |
| 548 | err = -EAGAIN; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 549 | goto out; |
| 550 | } |
| 551 | |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 552 | if (inode) { |
| 553 | down_write(&F2FS_I(inode)->i_sem); |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 554 | page = init_inode_metadata(inode, dir, new_name, |
| 555 | orig_name, ipage); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 556 | if (IS_ERR(page)) { |
| 557 | err = PTR_ERR(page); |
| 558 | goto fail; |
| 559 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 560 | } |
Jaegeuk Kim | bce8d11 | 2014-10-13 19:42:53 -0700 | [diff] [blame] | 561 | |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 562 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
Chao Yu | 3b4d732 | 2015-02-16 16:17:20 +0800 | [diff] [blame] | 563 | |
Jaegeuk Kim | 8daed21 | 2017-04-24 10:00:08 -0700 | [diff] [blame] | 564 | name_hash = f2fs_dentry_hash(new_name, NULL); |
Chao Yu | 9421d57 | 2016-08-28 18:57:55 +0800 | [diff] [blame] | 565 | f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos); |
Chao Yu | 3b4d732 | 2015-02-16 16:17:20 +0800 | [diff] [blame] | 566 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 567 | set_page_dirty(ipage); |
| 568 | |
| 569 | /* we don't need to mark_inode_dirty now */ |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 570 | if (inode) { |
Jaegeuk Kim | 205b982 | 2016-05-20 09:52:20 -0700 | [diff] [blame] | 571 | f2fs_i_pino_write(inode, dir->i_ino); |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 572 | f2fs_put_page(page, 1); |
| 573 | } |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 574 | |
| 575 | update_parent_metadata(dir, inode, 0); |
| 576 | fail: |
Jaegeuk Kim | 510022a | 2015-03-30 15:07:16 -0700 | [diff] [blame] | 577 | if (inode) |
| 578 | up_write(&F2FS_I(inode)->i_sem); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 579 | out: |
| 580 | f2fs_put_page(ipage, 1); |
| 581 | return err; |
| 582 | } |
| 583 | |
| 584 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, |
| 585 | struct inode *dir, struct inode *inode) |
| 586 | { |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 587 | struct f2fs_dentry_ptr d; |
| 588 | void *inline_dentry; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 589 | int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); |
| 590 | unsigned int bit_pos; |
| 591 | int i; |
| 592 | |
| 593 | lock_page(page); |
Jaegeuk Kim | fec1d65 | 2016-01-20 23:43:51 +0800 | [diff] [blame] | 594 | f2fs_wait_on_page_writeback(page, NODE, true); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 595 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 596 | inline_dentry = inline_data_addr(dir, page); |
| 597 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
| 598 | |
| 599 | bit_pos = dentry - d.dentry; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 600 | for (i = 0; i < slots; i++) |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 601 | __clear_bit_le(bit_pos + i, d.bitmap); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 602 | |
| 603 | set_page_dirty(page); |
Jaegeuk Kim | 9f7c45c | 2016-06-01 21:18:25 -0700 | [diff] [blame] | 604 | f2fs_put_page(page, 1); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 605 | |
Deepa Dinamani | 078cd82 | 2016-09-14 07:48:04 -0700 | [diff] [blame] | 606 | dir->i_ctime = dir->i_mtime = current_time(dir); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 607 | f2fs_mark_inode_dirty_sync(dir, false); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 608 | |
| 609 | if (inode) |
Jaegeuk Kim | 9f7c45c | 2016-06-01 21:18:25 -0700 | [diff] [blame] | 610 | f2fs_drop_nlink(dir, inode); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | bool f2fs_empty_inline_dir(struct inode *dir) |
| 614 | { |
| 615 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
| 616 | struct page *ipage; |
| 617 | unsigned int bit_pos = 2; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 618 | void *inline_dentry; |
| 619 | struct f2fs_dentry_ptr d; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 620 | |
| 621 | ipage = get_node_page(sbi, dir->i_ino); |
| 622 | if (IS_ERR(ipage)) |
| 623 | return false; |
| 624 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 625 | inline_dentry = inline_data_addr(dir, ipage); |
| 626 | make_dentry_ptr_inline(dir, &d, inline_dentry); |
| 627 | |
| 628 | bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 629 | |
| 630 | f2fs_put_page(ipage, 1); |
| 631 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 632 | if (bit_pos < d.max) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 633 | return false; |
| 634 | |
| 635 | return true; |
| 636 | } |
| 637 | |
Jaegeuk Kim | d8c6822 | 2015-04-27 16:26:24 -0700 | [diff] [blame] | 638 | int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, |
Jaegeuk Kim | 0b81d07 | 2015-05-15 16:26:10 -0700 | [diff] [blame] | 639 | struct fscrypt_str *fstr) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 640 | { |
| 641 | struct inode *inode = file_inode(file); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 642 | struct page *ipage = NULL; |
Jaegeuk Kim | 7b3cd7d | 2014-10-18 22:52:52 -0700 | [diff] [blame] | 643 | struct f2fs_dentry_ptr d; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 644 | void *inline_dentry = NULL; |
| 645 | int err; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 646 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 647 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
| 648 | |
| 649 | if (ctx->pos == d.max) |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 650 | return 0; |
| 651 | |
Jaegeuk Kim | 38594de | 2014-10-15 21:29:51 -0700 | [diff] [blame] | 652 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 653 | if (IS_ERR(ipage)) |
| 654 | return PTR_ERR(ipage); |
| 655 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 656 | inline_dentry = inline_data_addr(inode, ipage); |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 657 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 658 | make_dentry_ptr_inline(inode, &d, inline_dentry); |
Jaegeuk Kim | 7b3cd7d | 2014-10-18 22:52:52 -0700 | [diff] [blame] | 659 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 660 | err = f2fs_fill_dentries(ctx, &d, 0, fstr); |
| 661 | if (!err) |
| 662 | ctx->pos = d.max; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 663 | |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 664 | f2fs_put_page(ipage, 1); |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 665 | return err < 0 ? err : 0; |
Chao Yu | 201a05b | 2014-09-24 18:17:53 +0800 | [diff] [blame] | 666 | } |
Jaegeuk Kim | 67f8cf3c | 2015-10-15 11:34:49 -0700 | [diff] [blame] | 667 | |
| 668 | int f2fs_inline_data_fiemap(struct inode *inode, |
| 669 | struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) |
| 670 | { |
| 671 | __u64 byteaddr, ilen; |
| 672 | __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | |
| 673 | FIEMAP_EXTENT_LAST; |
| 674 | struct node_info ni; |
| 675 | struct page *ipage; |
| 676 | int err = 0; |
| 677 | |
| 678 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
| 679 | if (IS_ERR(ipage)) |
| 680 | return PTR_ERR(ipage); |
| 681 | |
| 682 | if (!f2fs_has_inline_data(inode)) { |
| 683 | err = -EAGAIN; |
| 684 | goto out; |
| 685 | } |
| 686 | |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 687 | ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode)); |
Jaegeuk Kim | 67f8cf3c | 2015-10-15 11:34:49 -0700 | [diff] [blame] | 688 | if (start >= ilen) |
| 689 | goto out; |
| 690 | if (start + len < ilen) |
| 691 | ilen = start + len; |
| 692 | ilen -= start; |
| 693 | |
| 694 | get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); |
| 695 | byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; |
Hyojun Kim | 63da420 | 2017-10-06 17:10:08 -0700 | [diff] [blame] | 696 | byteaddr += (char *)inline_data_addr(inode, ipage) - |
| 697 | (char *)F2FS_INODE(ipage); |
Jaegeuk Kim | 67f8cf3c | 2015-10-15 11:34:49 -0700 | [diff] [blame] | 698 | err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); |
| 699 | out: |
| 700 | f2fs_put_page(ipage, 1); |
| 701 | return err; |
| 702 | } |